feat: Apply modernize-use-nullptr

src/antlr/ASTFactory.cpp

@@ -71,7 +71,7 @@ void ASTFactory::registerFactory( int type, const char* ast_name, factory_type f
 	// check validity of arguments...
 	if( type < Token::MIN_USER_TYPE )
 		throw ANTLRException("Internal parser error invalid type passed to RegisterFactory");
-	if( factory == 0 )
+	if( factory == nullptr )
 		throw ANTLRException("Internal parser error 0 factory passed to RegisterFactory");
 
 	// resize up to and including 'type' and initalize any gaps to default
@@ -243,12 +243,12 @@ RefAST ASTFactory::make(ANTLR_USE_NAMESPACE(std)vector<RefAST>& nodes)
 	// link in children;
 	for( unsigned int i = 1; i < nodes.size(); i++ )
 	{
-		if ( nodes[i] == 0 )		// ignore null nodes
+		if ( nodes[i] == nullptr )		// ignore null nodes
 			continue;
 
-		if ( root == 0 )			// Set the root and set it up for a flat list
+		if ( root == nullptr )			// Set the root and set it up for a flat list
 			root = tail = nodes[i];
-		else if ( tail == 0 )
+		else if ( tail == nullptr )
 		{
 			root->setFirstChild(nodes[i]);
 			tail = root->getFirstChild();

src/antlr/ASTRefCount.cpp

@@ -32,7 +32,7 @@ ASTRef* ASTRef::getRef(const AST* p)
 		else
 			return new ASTRef(pp);
 	} else
-		return 0;
+		return nullptr;
 }
 
 #ifdef ANTLR_CXX_SUPPORTS_NAMESPACE

src/antlr/BaseAST.cpp

@@ -273,7 +273,7 @@ ANTLR_API RefAST nullAST;
 #if defined(_MSC_VER) && !defined(__ICL) // Microsoft Visual C++
 extern ANTLR_API AST* const nullASTptr = 0;
 #else
-ANTLR_API AST* const nullASTptr = 0;
+ANTLR_API AST* const nullASTptr = nullptr;
 #endif
 
 #ifdef ANTLR_CXX_SUPPORTS_NAMESPACE

src/antlr/LLkParser.cpp

@@ -83,7 +83,7 @@ void LLkParser::traceOut(const char* rname)
 RefToken LLkParser::LT(unsigned int i)
 {
     //assert(this!=NULL); //clang error: 'this' pointer cannot be null in well-defined C++ code;
-    assert(inputState!=NULL);
+    assert(inputState!=nullptr);
     TokenBuffer &tb = inputState->getInput();
     //assert(&tb!=NULL); //clang error: reference cannot be bound to dereferenced null pointer in well-defined C++ code;
     return tb.LT(i);

src/antlr/MismatchedTokenException.cpp

@@ -14,9 +14,9 @@ namespace antlr {
 
 MismatchedTokenException::MismatchedTokenException()
   : RecognitionException("Mismatched Token: expecting any AST node","<AST>",-1,-1)
-  , token(0)
+  , token(nullptr)
   , node(nullASTptr)
-  , tokenNames(0)
+  , tokenNames(nullptr)
   , numTokens(0)
 {
 }
@@ -30,7 +30,7 @@ MismatchedTokenException::MismatchedTokenException(
 	int upper_,
 	bool matchNot
 ) : RecognitionException("Mismatched Token","<AST>",-1,-1)
-  , token(0)
+  , token(nullptr)
   , node(node_)
   , tokenText( (node_ ? node_->toString(): ANTLR_USE_NAMESPACE(std)string("<empty tree>")) )
   , mismatchType(matchNot ? NOT_RANGE : RANGE)
@@ -49,7 +49,7 @@ MismatchedTokenException::MismatchedTokenException(
 	int expecting_,
 	bool matchNot
 ) : RecognitionException("Mismatched Token","<AST>",-1,-1)
-  , token(0)
+  , token(nullptr)
   , node(node_)
   , tokenText( (node_ ? node_->toString(): ANTLR_USE_NAMESPACE(std)string("<empty tree>")) )
   , mismatchType(matchNot ? NOT_TOKEN : TOKEN)
@@ -67,7 +67,7 @@ MismatchedTokenException::MismatchedTokenException(
 	BitSet set_,
 	bool matchNot
 ) : RecognitionException("Mismatched Token","<AST>",-1,-1)
-  , token(0)
+  , token(nullptr)
   , node(node_)
   , tokenText( (node_ ? node_->toString(): ANTLR_USE_NAMESPACE(std)string("<empty tree>")) )
   , mismatchType(matchNot ? NOT_SET : SET)

src/antlr/NoViableAltException.cpp

@@ -16,7 +16,7 @@ ANTLR_USING_NAMESPACE(std)
 
 NoViableAltException::NoViableAltException(RefAST t)
   : RecognitionException("NoViableAlt","<AST>",-1,-1),
-    token(0), node(t)
+    token(nullptr), node(t)
 {
 }
 

src/antlr/TokenRefCount.cpp

@@ -32,7 +32,7 @@ TokenRef* TokenRef::getRef(const Token* p)
 		else
 			return new TokenRef(pp);
 	} else
-		return 0;
+		return nullptr;
 }
 
 #ifdef ANTLR_CXX_SUPPORTS_NAMESPACE

src/antlr/TokenStreamSelector.cpp

@@ -20,7 +20,7 @@ namespace antlr {
  */
 
 TokenStreamSelector::TokenStreamSelector()
-: input(0)
+: input(nullptr)
 {
 }
 

src/cisco_lib/Helper.cpp

@@ -54,7 +54,7 @@ using namespace std;
 
 static unsigned long calculateDimension(FWObject* obj)
 {
-    if (Group::cast(obj)!=NULL)
+    if (Group::cast(obj)!=nullptr)
     {
         unsigned long res=0;
 	for (FWObject::iterator i1=obj->begin(); i1!=obj->end(); ++i1) 
@@ -68,7 +68,7 @@ static unsigned long calculateDimension(FWObject* obj)
     } else
     {
         Address *a=Address::cast(obj);
-        if (a!=NULL) 
+        if (a!=nullptr) 
         {
             if (a->isAny()) return LONG_MAX;
             return a->dimension();
@@ -79,12 +79,12 @@ static unsigned long calculateDimension(FWObject* obj)
 
 void Helper::expand_group_recursive(FWObject *o,list<FWObject*> &ol)
 {
-    if (Group::cast( o )!=NULL)
+    if (Group::cast( o )!=nullptr)
     {
         for (FWObject::iterator i2=o->begin(); i2!=o->end(); ++i2) 
         {
             FWObject *o1= *i2;
-            if (FWReference::cast(o1)!=NULL) o1=FWReference::cast(o1)->getPointer();
+            if (FWReference::cast(o1)!=nullptr) o1=FWReference::cast(o1)->getPointer();
             assert(o1);
 
             expand_group_recursive(o1,ol);
@@ -112,7 +112,7 @@ int  Helper::findInterfaceByAddress(Address *obj)
 int  Helper::findInterfaceByAddress(const InetAddr *addr,
                                     const InetAddr *nm)
 {
-    if (addr==NULL) return -1;
+    if (addr==nullptr) return -1;
 
 #if DEBUG_NETZONE_OPS
     cerr << "Helper::findInterfaceByAddress";
@@ -150,7 +150,7 @@ int  Helper::findInterfaceByAddress(const InetAddr *addr,
             cerr << endl;
 #endif
 
-            if (nm != NULL)
+            if (nm != nullptr)
             {
                 InetAddrMask interface_subnet(*(i_addr->getAddressPtr()),
                                               *(i_addr->getNetmaskPtr()));
@@ -254,7 +254,7 @@ int  Helper::findInterfaceByNetzone(const InetAddr *addr, const InetAddr *nm)
             {
                 Address *netzone_addr = Address::cast(*j);
                 
-                if (netzone_addr == NULL) continue;
+                if (netzone_addr == nullptr) continue;
 
 #if DEBUG_NETZONE_OPS
                 cerr << "Helper::findInterfaceByNetzone";
@@ -265,7 +265,7 @@ int  Helper::findInterfaceByNetzone(const InetAddr *addr, const InetAddr *nm)
 
                 // if addr==NULL, return id of the interfacce that has
                 // net_zone=="any"
-                if (addr==NULL)
+                if (addr==nullptr)
                 {
                     if (netzone_addr->getId()==FWObjectDatabase::ANY_ADDRESS_ID)
                         return iface->getId(); // id of the interface
@@ -278,7 +278,7 @@ int  Helper::findInterfaceByNetzone(const InetAddr *addr, const InetAddr *nm)
 
                     const InetAddr *nz_addr = netzone_addr->getAddressPtr();
                     const InetAddr *nz_netm = netzone_addr->getNetmaskPtr();
-                    if (nm != NULL && nz_netm != NULL)
+                    if (nm != nullptr && nz_netm != nullptr)
                     {
                         InetAddrMask nz_subnet(*nz_addr, *nz_netm);
                         InetAddrMask other_subnet(*addr, *nm);
@@ -408,9 +408,9 @@ list<int> Helper::findInterfaceByNetzoneOrAll(RuleElement *re)
     } else
     {
         FWObject *fo = re->front();
-        if (FWReference::cast(fo)!=NULL) fo=FWReference::cast(fo)->getPointer();
+        if (FWReference::cast(fo)!=nullptr) fo=FWReference::cast(fo)->getPointer();
         Address  *a = Address::cast(fo);
-        if (a==NULL)
+        if (a==nullptr)
         {
             Rule *rule = Rule::cast(re->getParent());
             Q_UNUSED(rule);

src/cisco_lib/NamedObject.cpp

@@ -206,7 +206,7 @@ const char* rw[] = {
     "icmp-traceroute",
     "icmp-conversion-error",
     "icmp-mobile-redirect",
-    NULL
+    nullptr
     };
 
 QSet<QString> NamedObject::reserved_words;
@@ -220,7 +220,7 @@ NamedObject::NamedObject(const FWObject *_obj, const QString &_platform)
     if (reserved_words.empty())
     {
         const char** cptr = rw;
-        while (*cptr!=NULL)
+        while (*cptr!=nullptr)
         {
             reserved_words.insert(QString(*cptr));
             cptr++;
@@ -231,10 +231,10 @@ NamedObject::NamedObject(const FWObject *_obj, const QString &_platform)
 
 QString NamedObject::getCommandWord()
 {
-    if (Address::constcast(obj)!=NULL && Address::constcast(obj)->isAny())
+    if (Address::constcast(obj)!=nullptr && Address::constcast(obj)->isAny())
         return "any";
 
-    if (Service::constcast(obj)!=NULL && Service::constcast(obj)->isAny())
+    if (Service::constcast(obj)!=nullptr && Service::constcast(obj)->isAny())
         return "any";
 
     if (Interface::constcast(obj))
@@ -262,7 +262,7 @@ QString NamedObject::sanitizeObjectName(const QString &name)
 
 QString NamedObject::createNetworkObjectCommand(const Address *addr_obj)
 {
-    if (addr_obj == NULL) return "";
+    if (addr_obj == nullptr) return "";
     if (addr_obj->isAny()) return "";
     if (Interface::constcast(obj)) return "";
 
@@ -323,7 +323,7 @@ QString NamedObject::printPorts(int rs, int re)
 
 QString NamedObject::createServiceObjectCommand(const Service *serv_obj)
 {
-    if (serv_obj == NULL) return "";
+    if (serv_obj == nullptr) return "";
     if (serv_obj->isAny()) return "";
 
     QStringList res;
@@ -377,10 +377,10 @@ QString NamedObject::createServiceObjectCommand(const Service *serv_obj)
 
 QString NamedObject::getCommand()
 {
-    if (Address::constcast(obj)!=NULL)
+    if (Address::constcast(obj)!=nullptr)
         return createNetworkObjectCommand(Address::constcast(obj));
 
-    if (Service::constcast(obj)!=NULL)
+    if (Service::constcast(obj)!=nullptr)
         return createServiceObjectCommand(Service::constcast(obj));
 
     return "";
@@ -388,8 +388,8 @@ QString NamedObject::getCommand()
 
 QString NamedObject::getCommandWhenObjectGroupMember()
 {
-    if (Address::constcast(obj)!=NULL) return "network-object object " + name;
+    if (Address::constcast(obj)!=nullptr) return "network-object object " + name;
-    if (Service::constcast(obj)!=NULL) return "service-object object " + name;
+    if (Service::constcast(obj)!=nullptr) return "service-object object " + name;
     return "";
 }
 

src/cisco_lib/PIXObjectGroup.cpp

@@ -51,10 +51,10 @@ QString PIXObjectGroup::groupMemberToString(FWObject *obj,
     if (this->getObjectGroupType() == NETWORK)
     {
         Address *a = Address::cast(obj);
-        assert(a!=NULL);
+        assert(a!=nullptr);
         const InetAddr *addr = a->getAddressPtr();
         ostr << "network-object ";
-        if (Network::cast(obj)!=NULL)
+        if (Network::cast(obj)!=nullptr)
         {
             const InetAddr *mask = a->getNetmaskPtr();
             ostr << addr->toString() << " ";
@@ -72,7 +72,7 @@ QString PIXObjectGroup::groupMemberToString(FWObject *obj,
         {
             ostr << "protocol-object ";
             Service *s=Service::cast(obj);
-            assert(s!=NULL);
+            assert(s!=nullptr);
             ostr << s->getProtocolName();
             return ostr.str().c_str();
         }
@@ -81,7 +81,7 @@ QString PIXObjectGroup::groupMemberToString(FWObject *obj,
         {
             ostr << "icmp-object ";
             ICMPService *s=ICMPService::cast(obj);
-            assert(s!=NULL);
+            assert(s!=nullptr);
             if ( s->getInt("type")== -1)
                 ostr << "any";
             else
@@ -93,7 +93,7 @@ QString PIXObjectGroup::groupMemberToString(FWObject *obj,
         {
             ostr << "port-object ";
             Service *s=Service::cast(obj);
-            assert(s!=NULL);
+            assert(s!=nullptr);
 
             int rs=TCPUDPService::cast(s)->getDstRangeStart();
             int re=TCPUDPService::cast(s)->getDstRangeEnd();

src/common/init.cpp

@@ -57,7 +57,7 @@ void init(char * const*)
     userDataDir = string(getenv("HOME"));
 
     char *lname = getenv("LOGNAME");
-    if (lname!=NULL)
+    if (lname!=nullptr)
         user_name = QString(lname);
     else
     {

src/compiler_lib/CompilerDriver_generators.cpp

@@ -92,7 +92,7 @@ void CompilerDriver::assembleFwScriptInternal(Cluster *cluster,
     time_t tm;
     struct tm *stm;
 
-    tm = time(NULL);
+    tm = time(nullptr);
     stm = localtime(&tm);
     timestr = strdup(ctime(&tm));
     timestr[strlen(timestr)-1] = '\0';

src/fwbedit/fwbedit.cpp

@@ -103,9 +103,9 @@ using namespace libfwbuilder;
 using namespace std;
 
 
-FWWindow *mw = NULL; 
+FWWindow *mw = nullptr; 
-FWBSettings *st = NULL; 
+FWBSettings *st = nullptr; 
-FWBApplication *app = NULL; 
+FWBApplication *app = nullptr; 
 
 string cmd_str = "";
 command cmd = NONE;
@@ -117,7 +117,7 @@ int conflict_res = 1;
 
 vector<string> platforms;
 
-FWObjectDatabase *objdb = NULL;
+FWObjectDatabase *objdb = nullptr;
 
 int fwbdebug = 0;
 
@@ -493,7 +493,7 @@ int main(int argc, char * const *argv)
             case 'a':
                 int num=0;
                 Q_UNUSED(num);
-                if (optarg!=NULL)
+                if (optarg!=nullptr)
                 {
                     string str = optarg;
                     num = splitStr(',', str, &ops);
@@ -544,7 +544,7 @@ int main(int argc, char * const *argv)
             case 'a':
                 int num=0;
                 Q_UNUSED(num);
-                if (optarg!=NULL)
+                if (optarg!=nullptr)
                 {
                     string str = optarg;
                     num = splitStr(',', str, &ops);
@@ -738,8 +738,8 @@ int main(int argc, char * const *argv)
                 .split("/", QString::SkipEmptyParts);
             string fw_name = components.last().toUtf8().constData();
             
-            Library *library = NULL;
+            Library *library = nullptr;
-            while (library == NULL)
+            while (library == nullptr)
             {
                 components.pop_back();
                 string library_path = components.join("/").toUtf8().constData();

src/fwbedit/import.cpp

@@ -59,7 +59,7 @@ void importConfig(const string &import_config,
     std::istringstream instream(buffer);
     QueueLogger *logger = new QueueLogger();
     logger->copyToStderr();
-    Importer* imp = NULL;
+    Importer* imp = nullptr;
 
     QStringList sl_buf = QString::fromUtf8(buffer.c_str()).split("\n");
     PreImport pi(&sl_buf);

src/fwbedit/list_object.cpp

@@ -147,7 +147,7 @@ string getAttributeValue(FWObject *obj, const string &attr_name)
         return DNSName::cast(obj)->getSourceName();
     }
 
-    if (TCPUDPService::cast(obj)!=NULL)
+    if (TCPUDPService::cast(obj)!=nullptr)
     {
         ostringstream str;
         if (attr_name=="src_range_start") 
@@ -161,7 +161,7 @@ string getAttributeValue(FWObject *obj, const string &attr_name)
         if (str.tellp()>0) return str.str();
     }
 
-    if (ICMPService::cast(obj)!=NULL)
+    if (ICMPService::cast(obj)!=nullptr)
     {
         if (attr_name=="icmp_type") return obj->getStr("type");
         if (attr_name=="icmp_code") return obj->getStr("code");

src/fwbedit/new_object.cpp

@@ -248,7 +248,7 @@ bool testPlatform(const string &pl, const string &os)
 FWObject* createObject(FWObjectDatabase *objdb,
                        const string &type, const string &parent)
 {
-    FWObject* obj = NULL;
+    FWObject* obj = nullptr;
     string path;
 
     obj = objdb->create(type);

src/import/IOSImporter.cpp

@@ -182,8 +182,8 @@ FWObject* IOSImporter::createTCPUDPNeqObject(const QString &proto,
     if ( ! name.isEmpty()) sig.object_name = name;
 
     QString group_name;
-    FWObject *srv1 = NULL;
+    FWObject *srv1 = nullptr;
-    FWObject *srv2 = NULL;
+    FWObject *srv2 = nullptr;
 
     if (src_port_op == "neq")
     {
@@ -221,7 +221,7 @@ FWObject* IOSImporter::createTCPUDPNeqObject(const QString &proto,
         srv2 = service_maker->createObject(sig);
     }
 
-    assert(srv1 != NULL && srv2 != NULL);
+    assert(srv1 != nullptr && srv2 != nullptr);
 
     ObjectMaker maker(Library::cast(library), error_tracker);
     FWObject *grp = 
@@ -250,8 +250,8 @@ void IOSImporter::ignoreCurrentInterface()
 
 void IOSImporter::pushRule()
 {
-    assert(current_ruleset!=NULL);
+    assert(current_ruleset!=nullptr);
-    assert(current_rule!=NULL);
+    assert(current_rule!=nullptr);
     // populate all elements of the rule
 
     addMessageToLog(
@@ -270,7 +270,7 @@ void IOSImporter::MergeRules::move(FWObject* r)
     // classes PolicyRule and RuleSetOptions. If r does not cast to
     // PolicyRule, then it must be RuleSetOptions and we should just
     // skip it.
-    if (rule==NULL)
+    if (rule==nullptr)
     {
         r->getParent()->remove(r);
         return;
@@ -310,7 +310,7 @@ Firewall* IOSImporter::finalize()
         fw->getManagementObject(); // creates management obj
 
         FWObject *policy = getFirewallObject()->getFirstByType(Policy::TYPENAME);
-        assert( policy!=NULL );
+        assert( policy!=nullptr );
 
         if (all_rulesets.size()!=0)
         {
@@ -401,7 +401,7 @@ Firewall* IOSImporter::finalize()
                         if (_dir=="out") direction = PolicyRule::Outbound;
 
                         // not all access lists are associated with interfaces
-                        if (intf!=NULL)
+                        if (intf!=nullptr)
                         {
                             if (fwbdebug)
                                 qDebug() << "    interface=" 
@@ -434,6 +434,6 @@ Firewall* IOSImporter::finalize()
     }
     else
     {
-        return NULL;
+        return nullptr;
     }
 }

src/import/IPTImporter.cpp

@@ -75,9 +75,9 @@ IPTImporter::IPTImporter(FWObject *lib,
     current_table = "";
     current_chain = "";
     current_state = "";
-    current_ruleset = NULL;
+    current_ruleset = nullptr;
-    current_rule = NULL;
+    current_rule = nullptr;
-    last_mark_rule = NULL;
+    last_mark_rule = nullptr;
 
     clear();
 
@@ -397,13 +397,13 @@ void IPTImporter::processModuleMatches()
 {
     PolicyRule *rule = PolicyRule::cast(current_rule);
     RuleElementSrv* srv = rule->getSrv();
-    assert(srv!=NULL);
+    assert(srv!=nullptr);
 
     FWOptions  *fwopt = getFirewallObject()->getOptionsObject();
-    assert(fwopt!=NULL);
+    assert(fwopt!=nullptr);
 
     FWOptions  *ropt = current_rule->getOptionsObject();
-    assert(ropt!=NULL);
+    assert(ropt!=nullptr);
 
     addAllModuleMatches(rule);
 
@@ -459,7 +459,7 @@ void IPTImporter::addAllModuleMatches(PolicyRule *rule)
 void IPTImporter::addMarkMatch(PolicyRule *rule)
 {
     RuleElementSrv* srv = rule->getSrv();
-    assert(srv!=NULL);
+    assert(srv!=nullptr);
     if (rule->getSrv()->isAny() && !match_mark.empty())
     {
         ObjectSignature sig(error_tracker);
@@ -474,7 +474,7 @@ void IPTImporter::addMarkMatch(PolicyRule *rule)
 void IPTImporter::addLengthMatch(PolicyRule *rule)
 {
     RuleElementSrv* srv = rule->getSrv();
-    assert(srv!=NULL);
+    assert(srv!=nullptr);
     if (rule->getSrv()->isAny() && !length_spec.empty())
     {
         // create custom service with module "length"
@@ -491,7 +491,7 @@ void IPTImporter::addLengthMatch(PolicyRule *rule)
 void IPTImporter::addPktTypeMatch(PolicyRule *rule)
 {
     RuleElementSrv* srv = rule->getSrv();
-    assert(srv!=NULL);
+    assert(srv!=nullptr);
     if (rule->getSrv()->isAny() && !pkt_type_spec.empty())
     {
         // create custom service with module "pkttype"
@@ -508,7 +508,7 @@ void IPTImporter::addPktTypeMatch(PolicyRule *rule)
 void IPTImporter::addLimitMatch(PolicyRule *rule)
 {
     FWOptions  *ropt = rule->getOptionsObject();
-    assert(ropt!=NULL);
+    assert(ropt!=nullptr);
     if (target!="LOG" && !limit_val.empty())
     {
         // TODO: this is where we should add support for hashlimit
@@ -523,7 +523,7 @@ void IPTImporter::addLimitMatch(PolicyRule *rule)
 void IPTImporter::addRecentMatch(PolicyRule *rule)
 {
     RuleElementSrv* srv = rule->getSrv();
-    assert(srv!=NULL);
+    assert(srv!=nullptr);
     if (rule->getSrv()->isAny() && !recent_match.empty())
     {
         // create custom service with module "recent"
@@ -541,7 +541,7 @@ void IPTImporter::addRecentMatch(PolicyRule *rule)
 void IPTImporter::addStateMatch(libfwbuilder::PolicyRule *rule, const string &state)
 {
     RuleElementSrv* srv = rule->getSrv();
-    assert(srv!=NULL);
+    assert(srv!=nullptr);
     if (rule->getSrv()->isAny() && !state.empty())
     {
         // create custom service with module "state"
@@ -569,7 +569,7 @@ PolicyRule* IPTImporter::createPolicyBranch(
     bool clear_rule_elements, bool make_stateless)
 {
     UnidirectionalRuleSet *rs = branch_rulesets[branch_ruleset_name];
-    if (rs==NULL)
+    if (rs==nullptr)
         rs = getUnidirRuleSet(branch_ruleset_name, Policy::TYPENAME);
     branch_rulesets[branch_ruleset_name] = rs;
     rs->ruleset->setName(branch_ruleset_name);
@@ -584,10 +584,10 @@ PolicyRule* IPTImporter::createPolicyBranch(
     rule->setBranch(rs->ruleset);
 
     FWOptions  *ropt = rule->getOptionsObject();
-    assert(ropt!=NULL);
+    assert(ropt!=nullptr);
     ropt->setBool("stateless", true);
 
-    if (rule->getParent() != NULL)
+    if (rule->getParent() != nullptr)
     {
         ostringstream str1;
         str1 << "Called from ruleset " << rule->getParent()->getName()
@@ -607,7 +607,7 @@ PolicyRule* IPTImporter::createPolicyBranch(
     if (make_stateless)
     {
         FWOptions  *ropt = new_rule->getOptionsObject();
-        assert(ropt!=NULL);
+        assert(ropt!=nullptr);
         ropt->setBool("stateless", true);
     }
 
@@ -622,7 +622,7 @@ NATRule* IPTImporter::createNATBranch(
     bool clear_rule_elements)
 {
     UnidirectionalRuleSet *rs = branch_rulesets[branch_ruleset_name];
-    if (rs==NULL)
+    if (rs==nullptr)
         rs = getUnidirRuleSet(branch_ruleset_name, NAT::TYPENAME);
     branch_rulesets[branch_ruleset_name] = rs;
     rs->ruleset->setName(branch_ruleset_name);
@@ -636,7 +636,7 @@ NATRule* IPTImporter::createNATBranch(
     rule->setRuleType(NATRule::NATBranch);
     rule->setBranch(rs->ruleset);
 
-    if (rule->getParent() != NULL)
+    if (rule->getParent() != nullptr)
     {
         ostringstream str1;
         str1 << "Called from ruleset " << rule->getParent()->getName()
@@ -670,7 +670,7 @@ NATRule* IPTImporter::createNATBranch(
 void IPTImporter::pushRule()
 {
 //    assert(current_ruleset!=NULL);
-    if (current_rule==NULL) return;
+    if (current_rule==nullptr) return;
 
     if (current_table=="nat")  pushNATRule();
     else                       pushPolicyRule();
@@ -684,10 +684,10 @@ void IPTImporter::pushPolicyRule()
     rule->setLogging(false);
 
     FWOptions  *fwopt = getFirewallObject()->getOptionsObject();
-    assert(fwopt!=NULL);
+    assert(fwopt!=nullptr);
 
     FWOptions  *ropt = current_rule->getOptionsObject();
-    assert(ropt!=NULL);
+    assert(ropt!=nullptr);
 
     bool skip_rule = false;
 
@@ -879,7 +879,7 @@ void IPTImporter::pushPolicyRule()
         std::string branch_ruleset_name = target;
         action = PolicyRule::Branch;
         UnidirectionalRuleSet *rs = branch_rulesets[branch_ruleset_name];
-        if (rs==NULL)
+        if (rs==nullptr)
             rs = getUnidirRuleSet(branch_ruleset_name, Policy::TYPENAME);
 
         branch_rulesets[branch_ruleset_name] = rs;
@@ -917,12 +917,12 @@ void IPTImporter::pushPolicyRule()
     {
         RuleElementSrv *srv = rule->getSrv();
         std::string protocol = "";
-        FWObject *estab = NULL;
+        FWObject *estab = nullptr;
 
         FWObjectDatabase *dbroot = getFirewallObject()->getRoot();
         FWObject *std_obj = dbroot->findInIndex(FWObjectDatabase::STANDARD_LIB_ID);
         estab = std_obj->findObjectByName(CustomService::TYPENAME, "ESTABLISHED");
-        if (estab == NULL)
+        if (estab == nullptr)
         {
             ObjectSignature sig(error_tracker);
             sig.type_name = CustomService::TYPENAME;
@@ -1034,11 +1034,11 @@ void IPTImporter::pushPolicyRule()
 
 
     if (target=="CONNMARK" &&
-        last_mark_rule != NULL &&
+        last_mark_rule != nullptr &&
         !action_params["connmark_save_mark"].empty())
     {
         FWOptions  *lmr_ropt = last_mark_rule->getOptionsObject();
-        assert(lmr_ropt!=NULL);
+        assert(lmr_ropt!=nullptr);
         lmr_ropt->setBool("ipt_mark_connections", true);
         skip_rule = true;
         addMessageToLog(
@@ -1097,7 +1097,7 @@ void IPTImporter::pushPolicyRule()
         }
 
         //  add rule to the right ruleset
-        RuleSet *ruleset = NULL;
+        RuleSet *ruleset = nullptr;
         std::string ruleset_name = "";
 
         // if (isStandardChain(current_chain))
@@ -1115,7 +1115,7 @@ void IPTImporter::pushPolicyRule()
 
         UnidirectionalRuleSet *rs = getUnidirRuleSet(current_chain,
                                                      Policy::TYPENAME);
-        assert(rs!=NULL);
+        assert(rs!=nullptr);
         ruleset = rs->ruleset;
 
         ruleset->add(current_rule);
@@ -1238,7 +1238,7 @@ void IPTImporter::pushPolicyRule()
         markCurrentRuleBad();
     }
 
-    current_rule = NULL;
+    current_rule = nullptr;
     rule_comment = "";
 
     clear();
@@ -1251,10 +1251,10 @@ void IPTImporter::pushNATRule()
     NATRule *rule = NATRule::cast(current_rule);
 
     FWOptions  *fwopt = getFirewallObject()->getOptionsObject();
-    assert(fwopt!=NULL);
+    assert(fwopt!=nullptr);
 
     FWOptions  *ropt = current_rule->getOptionsObject();
-    assert(ropt!=NULL);
+    assert(ropt!=nullptr);
 
     addOSrc();
     addODst();
@@ -1276,7 +1276,7 @@ void IPTImporter::pushNATRule()
         rule_type = NATRule::Masq;
 
         RuleElementTSrc *re = rule->getTSrc();
-        assert(re!=NULL);
+        assert(re!=nullptr);
         if ( !o_intf.empty() )
         {
             newInterface(o_intf);
@@ -1292,7 +1292,7 @@ void IPTImporter::pushNATRule()
     {
         rule_type = NATRule::SNAT;
 
-        FWObject *tsrc = NULL;
+        FWObject *tsrc = nullptr;
         if (nat_addr1!=nat_addr2)
         {
             ObjectSignature sig(error_tracker);
@@ -1310,7 +1310,7 @@ void IPTImporter::pushNATRule()
         }
 
         RuleElementTSrc *re = rule->getTSrc();
-        assert(re!=NULL);
+        assert(re!=nullptr);
         re->addRef(tsrc);
 
         if (!nat_port_range_start.empty())
@@ -1319,14 +1319,14 @@ void IPTImporter::pushNATRule()
             str_tuple nat_port_range(nat_port_range_start, nat_port_range_end);
             FWObject *s = createTCPUDPService(nat_port_range, empty_range, protocol);
             RuleElementTSrv *re = rule->getTSrv();
-            assert(re!=NULL);
+            assert(re!=nullptr);
             re->addRef(s);
         }
 
         if (!o_intf.empty())
         {
             RuleElement *itf_o_re = rule->getItfOutb();
-            assert(itf_o_re!=NULL);
+            assert(itf_o_re!=nullptr);
             newInterface(o_intf);
             Interface *intf = all_interfaces[o_intf];
             itf_o_re->addRef(intf);
@@ -1342,11 +1342,11 @@ void IPTImporter::pushNATRule()
         if (current_chain == "OUTPUT")
         {
             RuleElementOSrc *re = rule->getOSrc();
-            assert(re!=NULL);
+            assert(re!=nullptr);
             re->addRef(getFirewallObject());
         }
 
-        FWObject *tdst = NULL;
+        FWObject *tdst = nullptr;
         if (nat_addr1!=nat_addr2)
         {
             ObjectSignature sig(error_tracker);
@@ -1364,7 +1364,7 @@ void IPTImporter::pushNATRule()
         }
 
         RuleElementTDst *re = rule->getTDst();
-        assert(re!=NULL);
+        assert(re!=nullptr);
         re->addRef(tdst);
 
         if (!nat_port_range_start.empty())
@@ -1373,14 +1373,14 @@ void IPTImporter::pushNATRule()
             str_tuple nat_port_range(nat_port_range_start, nat_port_range_end);
             FWObject *s = createTCPUDPService(empty_range, nat_port_range, protocol);
             RuleElementTSrv *re = rule->getTSrv();
-            assert(re!=NULL);
+            assert(re!=nullptr);
             re->addRef(s);
         }
 
         if (!i_intf.empty())
         {
             RuleElement *itf_i_re = rule->getItfInb();
-            assert(itf_i_re!=NULL);
+            assert(itf_i_re!=nullptr);
             newInterface(i_intf);
             Interface *intf = all_interfaces[i_intf];
             itf_i_re->addRef(intf);
@@ -1392,7 +1392,7 @@ void IPTImporter::pushNATRule()
         rule_type = NATRule::Redirect;
 
         RuleElementTDst *re = rule->getTDst();
-        assert(re!=NULL);
+        assert(re!=nullptr);
         re->addRef(getFirewallObject());
 
         if (!nat_port_range_start.empty())
@@ -1401,14 +1401,14 @@ void IPTImporter::pushNATRule()
             str_tuple nat_port_range(nat_port_range_start, nat_port_range_end);
             FWObject *s = createTCPUDPService(empty_range, nat_port_range, protocol);
             RuleElementTSrv *re = rule->getTSrv();
-            assert(re!=NULL);
+            assert(re!=nullptr);
             re->addRef(s);
         }
 
         if ( ! o_intf.empty())
         {
             RuleElement *itf_o_re = rule->getItfOutb();
-            assert(itf_o_re!=NULL);
+            assert(itf_o_re!=nullptr);
             newInterface(o_intf);
             Interface *intf = all_interfaces[o_intf];
             itf_o_re->addRef(intf);
@@ -1417,14 +1417,14 @@ void IPTImporter::pushNATRule()
 
     if (target=="NETMAP")
     {
-        FWObject *o = NULL;
+        FWObject *o = nullptr;
 
         if (!src_a.empty())
         {
             rule_type = NATRule::SNetnat;
 
             RuleElementTSrc *tsrc = rule->getTSrc();
-            assert(tsrc!=NULL);
+            assert(tsrc!=nullptr);
 
             ObjectSignature sig(error_tracker);
             sig.type_name = Address::TYPENAME;
@@ -1439,7 +1439,7 @@ void IPTImporter::pushNATRule()
             rule_type = NATRule::DNetnat;
 
             RuleElementTDst *tdst = rule->getTDst();
-            assert(tdst!=NULL);
+            assert(tdst!=nullptr);
 
             ObjectSignature sig(error_tracker);
             sig.type_name = Address::TYPENAME;
@@ -1463,7 +1463,7 @@ void IPTImporter::pushNATRule()
         rule->setAction(NATRule::Branch);
 
         UnidirectionalRuleSet *rs = branch_rulesets[branch_ruleset_name];
-        if (rs==NULL)
+        if (rs==nullptr)
         {
             rs = getUnidirRuleSet(branch_ruleset_name, NAT::TYPENAME);
             branch_rulesets[branch_ruleset_name] = rs;
@@ -1477,18 +1477,18 @@ void IPTImporter::pushNATRule()
     rule->setRuleType(rule_type);
 
     //  add rule to the right ruleset
-    RuleSet *ruleset = NULL;
+    RuleSet *ruleset = nullptr;
     std::string ruleset_name = "";
     if (isStandardChain(current_chain))
     {
         ruleset = RuleSet::cast(
             getFirewallObject()->getFirstByType(NAT::TYPENAME));
-        assert(ruleset!=NULL);
+        assert(ruleset!=nullptr);
         ruleset->add(current_rule);
     } else
     {
         UnidirectionalRuleSet *rs = getUnidirRuleSet(current_chain, NAT::TYPENAME);
-        assert(rs!=NULL);
+        assert(rs!=nullptr);
         rs->ruleset->add(current_rule);
         ruleset = rs->ruleset;
     }
@@ -1505,7 +1505,7 @@ void IPTImporter::pushNATRule()
     // assert( nat!=NULL );
     // nat->add(current_rule);
 
-    current_rule = NULL;
+    current_rule = nullptr;
     rule_comment = "";
 
     clear();
@@ -1540,7 +1540,7 @@ Firewall* IPTImporter::finalize()
         fw->getManagementObject(); // creates management obj
 
         FWOptions  *fwopt = fw->getOptionsObject();
-        assert(fwopt!=NULL);
+        assert(fwopt!=nullptr);
 
         fwopt->setBool("firewall_is_part_of_any_and_networks", false);
 
@@ -1562,7 +1562,7 @@ Firewall* IPTImporter::finalize()
 
                 // check if all child objects were populated properly
                 FWOptions  *ropt = rule->getOptionsObject();
-                assert(ropt != NULL);
+                assert(ropt != nullptr);
                 ropt->setBool("stateless", true);
 
                 rule->setAction(PolicyRule::Accept);
@@ -1597,7 +1597,7 @@ Firewall* IPTImporter::finalize()
                 if (rs->name == "INPUT")
                 {
                     RuleElementDst* dst = rule->getDst();
-                    assert(dst!=NULL);
+                    assert(dst!=nullptr);
                     dst->addRef(fw);
                     rule->setDirection(PolicyRule::Inbound);
 
@@ -1622,7 +1622,7 @@ Firewall* IPTImporter::finalize()
                 if (rs->name == "OUTPUT")
                 {
                     RuleElementSrc* src = rule->getSrc();
-                    assert(src!=NULL);
+                    assert(src!=nullptr);
                     src->addRef(fw);
                     rule->setDirection(PolicyRule::Outbound);
                 }
@@ -1665,7 +1665,7 @@ Firewall* IPTImporter::finalize()
     }
     else
     {
-        return NULL;
+        return nullptr;
     }
 }
 
@@ -1681,9 +1681,9 @@ UnidirectionalRuleSet* IPTImporter::getUnidirRuleSet(
 {
     string all_rulesets_index = current_table + "/" + ruleset_name;
     UnidirectionalRuleSet *rs = all_rulesets[all_rulesets_index];
-    if (rs == NULL)
+    if (rs == nullptr)
     {
-        RuleSet *ruleset = NULL;
+        RuleSet *ruleset = nullptr;
         FWObjectDatabase *dbroot = getFirewallObject()->getRoot();
 
         if (isStandardChain(ruleset_name))
@@ -1709,7 +1709,7 @@ UnidirectionalRuleSet* IPTImporter::getUnidirRuleSet(
                             break;
                         }
                     }
-                    if (ruleset == NULL)
+                    if (ruleset == nullptr)
                     {
                         ruleset = RuleSet::cast(dbroot->create(Policy::TYPENAME));
                         FWOptions *rulesetopt = ruleset->getOptionsObject();
@@ -1733,7 +1733,7 @@ UnidirectionalRuleSet* IPTImporter::getUnidirRuleSet(
                             break;
                         }
                     }
-                    if (ruleset == NULL)
+                    if (ruleset == nullptr)
                     {
                         ruleset = RuleSet::cast(dbroot->create(Policy::TYPENAME));
                         FWOptions *rulesetopt = ruleset->getOptionsObject();

src/import/PFImporter.cpp

@@ -487,7 +487,7 @@ void PFImporter::convertTcpFlags(QList<int> &flags_list,
 
 FWObject* PFImporter::makeAddressObj(AddressSpec &as)
 {
-    if (as.at == AddressSpec::ANY) return NULL;
+    if (as.at == AddressSpec::ANY) return nullptr;
 
     if (as.at == AddressSpec::INTERFACE_OR_HOST_NAME)
     {
@@ -497,7 +497,7 @@ FWObject* PFImporter::makeAddressObj(AddressSpec &as)
         if (int_prop->looksLikeInterface(as.address.c_str()))
         {
             Interface *intf = getInterfaceByName(as.address);
-            if (intf == NULL)
+            if (intf == nullptr)
             {
                 // this interface was never used in "on <intf>" clause before
                 newInterface(as.address);
@@ -532,7 +532,7 @@ FWObject* PFImporter::makeAddressObj(AddressSpec &as)
     if (as.at == AddressSpec::INTERFACE_NETWORK)
     {
         Interface *intf = getInterfaceByName(as.address);
-        if (intf == NULL)
+        if (intf == nullptr)
         {
             // this interface was never used in "on <intf>" clause before
             newInterface(as.address);
@@ -540,7 +540,7 @@ FWObject* PFImporter::makeAddressObj(AddressSpec &as)
         }
 
         FWObject *o = intf->getFirstByType(AttachedNetworks::TYPENAME);
-        if ( o != NULL )
+        if ( o != nullptr )
         {
             return o;
         } else {
@@ -560,7 +560,7 @@ FWObject* PFImporter::makeAddressObj(AddressSpec &as)
     {
         error_tracker->registerError(
             QObject::tr("import of 'interface:broadcast' is not supported."));
-        return NULL;
+        return nullptr;
     }
 
     if (as.at == AddressSpec::HOST_ADDRESS)
@@ -580,7 +580,7 @@ FWObject* PFImporter::makeAddressObj(AddressSpec &as)
             error_tracker->registerError(
                 QObject::tr("Warning: matching '%1' is not supported")
                 .arg(as.address.c_str()));
-            return NULL;
+            return nullptr;
         }
     }
 
@@ -594,7 +594,7 @@ FWObject* PFImporter::makeAddressObj(AddressSpec &as)
         return at;
     }
 
-    return NULL;
+    return nullptr;
 }
 
 void PFImporter::addLogging()
@@ -667,7 +667,7 @@ void PFImporter::pushRule()
     else
         pushNATRule();
 
-    assert(current_rule!=NULL);
+    assert(current_rule!=nullptr);
 
     if (error_tracker->hasWarnings())
     {
@@ -692,7 +692,7 @@ void PFImporter::pushRule()
         markCurrentRuleBad();
     }
 
-    current_rule = NULL;
+    current_rule = nullptr;
     rule_comment = "";
 
     clear();
@@ -708,7 +708,7 @@ void PFImporter::pushPolicyRule()
     // base class uses dictionary all_rulesets to do some checks (e.g.
     // countRules()) so we'll create one dummy UnidirectionalRuleSet object
     string ruleset_name = ruleset->getName();
-    if (checkUnidirRuleSet(ruleset_name) == NULL)
+    if (checkUnidirRuleSet(ruleset_name) == nullptr)
     {
         UnidirectionalRuleSet *rs = new UnidirectionalRuleSet();
         rs->name = ruleset_name;
@@ -716,7 +716,7 @@ void PFImporter::pushPolicyRule()
         all_rulesets[ruleset_name] = rs;
     }
 
-    assert(current_rule!=NULL);
+    assert(current_rule!=nullptr);
     // populate all elements of the rule
 
     // Note that standard function
@@ -734,7 +734,7 @@ void PFImporter::pushPolicyRule()
     PolicyRule *rule = PolicyRule::cast(current_rule);
 
     FWOptions  *ropt = current_rule->getOptionsObject();
-    assert(ropt!=NULL);
+    assert(ropt!=nullptr);
 
     if (action=="pass")
     {
@@ -811,7 +811,7 @@ void PFImporter::pushPolicyRule()
     for (it=iface_group.begin(); it!=iface_group.end(); ++it)
     {
         Interface *intf = getInterfaceByName(it->name);
-        assert(intf!=NULL);
+        assert(intf!=nullptr);
         RuleElement *re =rule->getItf();
         re->addRef(intf);
         if (it->neg) re->setNeg(true);
@@ -853,7 +853,7 @@ void PFImporter::pushPolicyRule()
         sig.type_name = TagService::TYPENAME;
         sig.tag = tag.c_str();
         FWObject *tobj = commitObject(service_maker->createObject(sig));
-        rule->setTagging(tobj != NULL);
+        rule->setTagging(tobj != nullptr);
         rule->setTagObject(tobj);
     }
 
@@ -911,7 +911,7 @@ void PFImporter::pushPolicyRule()
             RouteSpec &rs = *it;
 
             Interface *intf = getInterfaceByName(rs.iface);
-            if (intf == NULL)
+            if (intf == nullptr)
             {
                 // this interface was never used in "on <intf>" clause before
                 intf = newInterface(rs.iface);
@@ -990,7 +990,7 @@ void PFImporter::pushNATRule()
     // base class uses dictionary all_rulesets to do some checks (e.g.
     // countRules()) so we'll create one dummy UnidirectionalRuleSet object
     string ruleset_name = ruleset->getName();
-    if (checkUnidirRuleSet(ruleset_name) == NULL)
+    if (checkUnidirRuleSet(ruleset_name) == nullptr)
     {
         UnidirectionalRuleSet *rs = new UnidirectionalRuleSet();
         rs->name = ruleset_name;
@@ -998,7 +998,7 @@ void PFImporter::pushNATRule()
         all_rulesets[ruleset_name] = rs;
     }
 
-    assert(current_rule!=NULL);
+    assert(current_rule!=nullptr);
 
     QString message_str = 
         QString("nat rule: action %1; interfaces: %2");
@@ -1006,7 +1006,7 @@ void PFImporter::pushNATRule()
     NATRule *rule = NATRule::cast(current_rule);
 
     FWOptions  *ropt = current_rule->getOptionsObject();
-    assert(ropt!=NULL);
+    assert(ropt!=nullptr);
 
     if (action=="nat")   rule->setRuleType(NATRule::SNAT);
     if (action=="rdr")   rule->setRuleType(NATRule::DNAT);
@@ -1021,7 +1021,7 @@ void PFImporter::pushNATRule()
     for (it=iface_group.begin(); it!=iface_group.end(); ++it)
     {
         Interface *intf = getInterfaceByName(it->name);
-        assert(intf!=NULL);
+        assert(intf!=nullptr);
         RuleElement *re =rule->getItfOutb();
         re->addRef(intf);
         if (it->neg) re->setNeg(true);
@@ -1300,7 +1300,7 @@ Firewall* PFImporter::finalize()
                 if (int_prop->looksLikeInterface(skip_interface_name.c_str()))
                 {
                     Interface *intf = getInterfaceByName(skip_interface_name);
-                    if (intf == NULL)
+                    if (intf == nullptr)
                     {
                         // this interface was never used in "on
                         // <intf>" clause before
@@ -1377,7 +1377,7 @@ Firewall* PFImporter::finalize()
     }
     else
     {
-        return NULL;
+        return nullptr;
     }
 }
 
@@ -1392,7 +1392,7 @@ Interface* PFImporter::getInterfaceByName(const string &name)
             return intf;
         }
     }
-    return NULL;
+    return nullptr;
 }
     
 void PFImporter::newAddressTableObject(const string &name, const string &file)
@@ -1437,7 +1437,7 @@ void PFImporter::newAddressTableObject(const string &name,
     ObjectMaker maker(Library::cast(library), error_tracker);
     FWObject *og =
         commitObject(maker.createObject(ObjectGroup::TYPENAME, name.c_str()));
-    assert(og!=NULL);
+    assert(og!=nullptr);
     address_table_registry[name.c_str()] = og;
 
     if (has_negations)

src/import/PIXImporter.cpp

@@ -91,11 +91,11 @@ void PIXImporter::clear()
 {
     Importer::clear();
 
-    current_named_object = NULL;
+    current_named_object = nullptr;
     named_object_name = "";
     named_object_comment = "";
 
-    current_object_group = NULL;
+    current_object_group = nullptr;
     object_group_name = "";
     object_group_comment = "";
     object_group_service_protocol = "";
@@ -142,7 +142,7 @@ Interface* PIXImporter::getInterfaceByLabel(const string &label)
             return intf;
         }
     }
-    return NULL;
+    return nullptr;
 }
     
 
@@ -251,8 +251,8 @@ void PIXImporter::fixServiceObjectUsedForBothSrcAndDstPorts()
         // named object/object group)
         if (src_port_spec.empty() || dst_port_spec.empty()) return;
 
-        FWObject *src_port_obj = NULL;
+        FWObject *src_port_obj = nullptr;
-        FWObject *dst_port_obj = NULL;
+        FWObject *dst_port_obj = nullptr;
         
         if (!src_port_spec.empty() &&
             named_objects_registry.count(src_port_spec.c_str()) > 0)
@@ -265,11 +265,11 @@ void PIXImporter::fixServiceObjectUsedForBothSrcAndDstPorts()
         // if both src_port_obj and dst_port_obj are NULL, this means
         // both port operations are in-line port matches that will be
         // taken are of in the base class functions
-        if (src_port_obj == NULL && dst_port_obj == NULL) return;
+        if (src_port_obj == nullptr && dst_port_obj == nullptr) return;
 
         // If only one of the two is NULL, use base class functions to
         // fill it in from its port_op and port_spec variables
-        if (dst_port_obj == NULL)
+        if (dst_port_obj == nullptr)
         {
             src_port_spec = "";
             src_port_op = "";
@@ -278,7 +278,7 @@ void PIXImporter::fixServiceObjectUsedForBothSrcAndDstPorts()
             else dst_port_obj = createUDPService();
         }
 
-        if (src_port_obj == NULL)
+        if (src_port_obj == nullptr)
         {
             dst_port_spec = "";
             dst_port_op = "";
@@ -307,7 +307,7 @@ void PIXImporter::mixServiceObjects(FWObject *src_ports,
                                     FWObject *dst_ports,
                                     FWObject *service_group)
 {
-    if (Group::cast(src_ports)!=NULL)
+    if (Group::cast(src_ports)!=nullptr)
     {
         for (FWObject::iterator i1=src_ports->begin(); i1!=src_ports->end(); ++i1)
         {
@@ -317,7 +317,7 @@ void PIXImporter::mixServiceObjects(FWObject *src_ports,
         return;
     }
 
-    if (Group::cast(dst_ports)!=NULL)
+    if (Group::cast(dst_ports)!=nullptr)
     {
         for (FWObject::iterator i1=dst_ports->begin(); i1!=dst_ports->end(); ++i1)
         {
@@ -354,10 +354,10 @@ void PIXImporter::mixServiceObjects(FWObject *src_ports,
 
 FWObject* PIXImporter::mirrorServiceObjectRecursively(FWObject *obj)
 {
-    FWObject *res = NULL;
+    FWObject *res = nullptr;
     string new_name = obj->getName() + "-mirror";
 
-    if (Service::cast(obj) != NULL)
+    if (Service::cast(obj) != nullptr)
     {
         FWObject *new_obj = service_maker->getMirroredServiceObject(obj);
         if (new_obj)
@@ -477,7 +477,7 @@ void PIXImporter::pushRule()
     else
         pushNATRule();
 
-    assert(current_rule!=NULL);
+    assert(current_rule!=nullptr);
 
     if (error_tracker->hasWarnings())
     {
@@ -502,7 +502,7 @@ void PIXImporter::pushRule()
         markCurrentRuleBad();
     }
 
-    current_rule = NULL;
+    current_rule = nullptr;
     rule_comment = "";
 
     clear();
@@ -511,8 +511,8 @@ void PIXImporter::pushRule()
 
 void PIXImporter::pushPolicyRule()
 {
-    assert(current_ruleset!=NULL);
+    assert(current_ruleset!=nullptr);
-    assert(current_rule!=NULL);
+    assert(current_rule!=nullptr);
     // populate all elements of the rule
 
     addMessageToLog(
@@ -523,7 +523,7 @@ void PIXImporter::pushPolicyRule()
     PolicyRule *rule = PolicyRule::cast(current_rule);
 
     FWOptions  *ropt = current_rule->getOptionsObject();
-    assert(ropt!=NULL);
+    assert(ropt!=nullptr);
 
     if (action=="permit")
     {
@@ -678,10 +678,10 @@ Firewall* PIXImporter::finalize()
         rearrangeVlanInterfaces();
 
         FWObject *policy = getFirewallObject()->getFirstByType(Policy::TYPENAME);
-        assert( policy!=NULL );
+        assert( policy!=nullptr );
 
         FWObject *nat = getFirewallObject()->getFirstByType(NAT::TYPENAME);
-        assert( nat!=NULL );
+        assert( nat!=nullptr );
 
         if (all_rulesets.size()!=0)
         {
@@ -816,7 +816,7 @@ Firewall* PIXImporter::finalize()
                                      << "dir: " << _dir.c_str();
 
                         // not all access lists are associated with interfaces
-                        if (intf != NULL)
+                        if (intf != nullptr)
                         {
                             if (fwbdebug)
                                 qDebug() << "    interface: " 
@@ -867,7 +867,7 @@ Firewall* PIXImporter::finalize()
     }
     else
     {
-        return NULL;
+        return nullptr;
     }
 }
 
@@ -1001,7 +1001,7 @@ void PIXImporter::setNamedObjectDescription(const std::string &txt)
 {
     named_object_comment = QString::fromUtf8(txt.c_str());
 
-    if (current_named_object != NULL && ! named_object_name.isEmpty())
+    if (current_named_object != nullptr && ! named_object_name.isEmpty())
     {
         current_named_object->setBool(".import-commited", false);
         current_named_object->setComment("");
@@ -1089,7 +1089,7 @@ void PIXImporter::newObjectGroupICMP(const string &name)
 void PIXImporter::setObjectGroupDescription(const std::string &descr)
 {
     object_group_comment = QString::fromUtf8(descr.c_str());
-    if (current_object_group != NULL && ! object_group_name.isEmpty())
+    if (current_object_group != nullptr && ! object_group_name.isEmpty())
     {
         current_object_group->setBool(".import-commited", false);
         current_object_group->setComment("");
@@ -1132,7 +1132,7 @@ void PIXImporter::addIPServiceToObjectGroup()
 
 void PIXImporter::addTCPUDPServiceToObjectGroup()
 {
-    FWObject *new_obj = NULL;
+    FWObject *new_obj = nullptr;
     if (protocol.empty() && ! object_group_service_protocol.isEmpty())
         protocol = object_group_service_protocol.toStdString();
 

src/import/getProtoByName.cpp

@@ -118,7 +118,7 @@ int GetProtoByName::getProtocolByName(const QString &name)
     if (protocols.contains(name)) return protocols[name];
     struct protoent *pe = getprotobyname(name.toLatin1().constData());
 
-    if (pe!=NULL)
+    if (pe!=nullptr)
         return pe->p_proto;
 
     return -1;

src/import/getServByName.cpp

@@ -684,7 +684,7 @@ int GetServByName::getPortByName(const QString &name, const QString &proto)
     struct servent *se = getservbyname(name.toLatin1().constData(),
                                        proto.toLatin1().constData());
 
-    if (se!=NULL)
+    if (se!=nullptr)
     {
         int port = ntohs(se->s_port);
         //free(se);

src/import/objectMaker.cpp

@@ -79,7 +79,7 @@ void ObjectMakerErrorTracker::registerWarning(const string &msg)
 
 void ObjectMaker::clear()
 {
-    last_created = NULL;
+    last_created = nullptr;
     named_object_registry.clear(); 
     anon_object_registry.clear(); 
 }
@@ -93,13 +93,13 @@ FWObject* ObjectMaker::findMatchingObject(const ObjectSignature &sig)
         if (named_object_registry.count(sig_str) > 0)
             return library->getRoot()->findInIndex(
                 named_object_registry[sig_str]);
-        return NULL;
+        return nullptr;
     }
 
     if (anon_object_registry.count(sig_str) > 0)
         return library->getRoot()->findInIndex(anon_object_registry[sig_str]);
 
-    return NULL;
+    return nullptr;
 }
 
 void ObjectMaker::registerNamedObject(const ObjectSignature &sig,
@@ -110,7 +110,7 @@ void ObjectMaker::registerNamedObject(const ObjectSignature &sig,
     QString as = anon_sig.toString();
     if (anon_object_registry.count(as) > 0) anon_object_registry.remove(as);
 
-    named_object_registry[sig.toString()] = (obj!=NULL) ? obj->getId() : -1;
+    named_object_registry[sig.toString()] = (obj!=nullptr) ? obj->getId() : -1;
 }
 
 void ObjectMaker::registerAnonymousObject(const ObjectSignature &sig,
@@ -118,7 +118,7 @@ void ObjectMaker::registerAnonymousObject(const ObjectSignature &sig,
 {
     ObjectSignature anon_sig = sig;
     anon_sig.object_name = "";
-    anon_object_registry[anon_sig.toString()] = (obj!=NULL) ? obj->getId() : -1;
+    anon_object_registry[anon_sig.toString()] = (obj!=nullptr) ? obj->getId() : -1;
 }
 
 /*
@@ -140,14 +140,14 @@ FWObject* ObjectMaker::promoteToNamedObject(FWObject *obj,
         new_obj->duplicate(obj);
         new_obj->setName(objName);
         ObjectSignature sig(error_tracker);
-        new_obj->dispatch(&sig, (void*)(NULL));
+        new_obj->dispatch(&sig, (void*)nullptr);
         registerNamedObject(sig, new_obj);
         return new_obj;
     } else
     {
         obj->setName(objName);
         ObjectSignature sig(error_tracker);
-        obj->dispatch(&sig, (void*)(NULL));
+        obj->dispatch(&sig, (void*)nullptr);
         registerNamedObject(sig, obj);
         return obj;
     }
@@ -158,7 +158,7 @@ FWObject* ObjectMaker::promoteToNamedObject(FWObject *obj,
 FWObject* ObjectMaker::createObject(const std::string &objType,
                                     const std::string &objName)
 {
-    assert(library!=NULL);
+    assert(library!=nullptr);
     FWBTree tree ;
     FWObject *slot = tree.getStandardSlotForObject(library,objType.c_str());
     return createObject(slot, objType, objName);
@@ -168,9 +168,9 @@ FWObject* ObjectMaker::createObject(FWObject *parent,
                                     const std::string &objType,
                                     const std::string &objName)
 {
-    assert(library!=NULL);
+    assert(library!=nullptr);
     FWObject*  o = library->getRoot()->create(objType);
-    if (parent != NULL)
+    if (parent != nullptr)
     {
         if (parent->isReadOnly())
         {     
@@ -201,7 +201,7 @@ FWObject* ObjectMaker::createObject(FWObject *parent,
 
 FWObject* ObjectMaker::createObject(ObjectSignature &)
 {
-    return NULL;
+    return nullptr;
 }
 
 //****************************************************************
@@ -230,7 +230,7 @@ void ObjectMaker::prepareForDeduplication(FWObject *root)
     {
         ObjectSignature sig(error_tracker);
 
-        root->dispatch(&sig, (void*)(NULL));
+        root->dispatch(&sig, (void*)nullptr);
 
         registerNamedObject(sig, root);
         registerAnonymousObject(sig, root); // this erases sig.object_name

src/iosacl/iosacl.cpp

@@ -65,7 +65,7 @@ using namespace libfwbuilder;
 using namespace fwcompiler;
 
 
-FWObjectDatabase       *objdb = NULL;
+FWObjectDatabase       *objdb = nullptr;
 
 class UpgradePredicate: public XMLTools::UpgradePredicate
 {

src/iptlib/ipt_utils.cpp

@@ -117,7 +117,7 @@ void expand_interface_with_phys_address(Compiler *compiler,
 
     std::list<FWObject*> lipaddr;
     std::list<FWObject*> lother;
-    physAddress *pa = NULL;
+    physAddress *pa = nullptr;
 
     for (std::list<FWObject*>::iterator j=ol1.begin(); j!=ol1.end(); j++)
     {
@@ -126,7 +126,7 @@ void expand_interface_with_phys_address(Compiler *compiler,
             lipaddr.push_back(*j);
             continue;
         }
-        if (physAddress::cast(*j)!=NULL)
+        if (physAddress::cast(*j)!=nullptr)
         {
             pa = physAddress::cast(*j);
             continue;
@@ -137,7 +137,7 @@ void expand_interface_with_phys_address(Compiler *compiler,
 /* 
  * if pa==NULL then this is trivial case: there is no physical address
  */
-    if (pa==NULL)
+    if (pa==nullptr)
     {
         list_result.insert(list_result.end(), ol1.begin(), ol1.end());
         return;
@@ -163,10 +163,10 @@ void expand_interface_with_phys_address(Compiler *compiler,
  */
     FWObject *p = Host::getParentHost(iface);
     //FWObject *p = iface->getParentHost();
-    assert(p!=NULL);
+    assert(p!=nullptr);
 
     FWOptions *hopt = Host::cast(p)->getOptionsObject();
-    bool use_mac = (hopt!=NULL && hopt->getBool("use_mac_addr_filter") );
+    bool use_mac = (hopt!=nullptr && hopt->getBool("use_mac_addr_filter") );
 
     if (lipaddr.empty())    list_result.push_back(pa);
     else

src/libfwbuilder/src/fwbuilder/Address.cpp

@@ -78,14 +78,14 @@ bool Address::isAny() const
 
 const Address* Address::getAddressObject() const
 {
-    return NULL;
+    return nullptr;
 }
 
 const InetAddrMask* Address::getInetAddrMaskObjectPtr() const
 {
     const Address *addr_obj = getAddressObject();
     if (addr_obj) return addr_obj->inet_addr_mask;
-    return NULL;
+    return nullptr;
 }
 
 bool Address::hasInetAddress() const
@@ -102,28 +102,28 @@ const InetAddr* Address::getAddressPtr() const
 {
     const InetAddrMask *inet_addr_mask = getInetAddrMaskObjectPtr();
     if (inet_addr_mask) return inet_addr_mask->getAddressPtr();
-    return NULL;
+    return nullptr;
 }
 
 const InetAddr* Address::getNetmaskPtr() const
 {
     const InetAddrMask *inet_addr_mask = getInetAddrMaskObjectPtr();
     if (inet_addr_mask) return inet_addr_mask->getNetmaskPtr();
-    return NULL;
+    return nullptr;
 }
 
 const InetAddr* Address::getNetworkAddressPtr() const
 {
     const InetAddrMask *inet_addr_mask = getInetAddrMaskObjectPtr();
     if (inet_addr_mask) return inet_addr_mask->getNetworkAddressPtr();
-    return NULL;
+    return nullptr;
 }
 
 const InetAddr* Address::getBroadcastAddressPtr() const
 {
     const InetAddrMask *inet_addr_mask = getInetAddrMaskObjectPtr();
     if (inet_addr_mask) return inet_addr_mask->getBroadcastAddressPtr();
-    return NULL;
+    return nullptr;
 }
 
 void Address::setAddress(const InetAddr& a)
@@ -147,20 +147,20 @@ void Address::setAddressNetmask(const std::string&)
 unsigned int Address::dimension()  const
 {
     const InetAddrMask *addr_obj = getInetAddrMaskObjectPtr();
-    if (addr_obj!=NULL) return addr_obj->dimension();
+    if (addr_obj!=nullptr) return addr_obj->dimension();
     return 1;
 }
 
 bool Address::belongs(const InetAddr &other) const
 {
     const InetAddrMask *addr_obj = getInetAddrMaskObjectPtr();
-    if (addr_obj!=NULL) return addr_obj->belongs(other);
+    if (addr_obj!=nullptr) return addr_obj->belongs(other);
     return false;
 }
 
 bool Address::cmp(const FWObject *obj, bool recursive)
 {
-    if (Address::constcast(obj)==NULL) return false;
+    if (Address::constcast(obj)==nullptr) return false;
     if (!FWObject::cmp(obj, recursive)) return false;
     if (hasInetAddress()!=Address::constcast(obj)->hasInetAddress()) return false;
     if (!hasInetAddress()) return true;

src/libfwbuilder/src/fwbuilder/AddressRange.cpp

@@ -75,7 +75,7 @@ void AddressRange::setNetmask(const InetAddr& ) {}
 FWObject& AddressRange::shallowDuplicate(const FWObject *o, bool preserve_id)
 {
     const AddressRange *n = dynamic_cast<const AddressRange *>(o);
-    if (n==NULL) {
+    if (n==nullptr) {
 
         std::ostringstream s;
         s << "Attempt to copy incompatible object to AddressRange: objectID=";
@@ -91,7 +91,7 @@ FWObject& AddressRange::shallowDuplicate(const FWObject *o, bool preserve_id)
 
 bool AddressRange::cmp(const FWObject *obj, bool recursive)
 {
-    if (AddressRange::constcast(obj)==NULL) return false;
+    if (AddressRange::constcast(obj)==nullptr) return false;
     if (!FWObject::cmp(obj, recursive)) return false;
 
     InetAddr o1b;
@@ -113,12 +113,12 @@ void AddressRange::fromXML(xmlNodePtr root)
     FWObject::fromXML(root);
     
     const char *n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("start_address")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
     start_address = InetAddr(AF_UNSPEC, n);
     FREEXMLBUFF(n);
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("end_address")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
     end_address = InetAddr(AF_UNSPEC, n);
     FREEXMLBUFF(n);
 

src/libfwbuilder/src/fwbuilder/AddressTable.cpp

@@ -68,12 +68,12 @@ void AddressTable::fromXML(xmlNodePtr root)
     const char *n;
     
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("filename")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
     setStr("filename", n);
     FREEXMLBUFF(n);
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("run_time")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
     setStr("run_time", n);
     FREEXMLBUFF(n);
 }
@@ -156,7 +156,7 @@ void AddressTable::loadFromSource(bool ipv6, FWOptions *options,
             }
             if (!buf.empty())
             {
-                new_addr = NULL;
+                new_addr = nullptr;
                 if (ipv6 && buf.find(":")!=string::npos)
                 {
                     try

src/libfwbuilder/src/fwbuilder/BackgroundOp.cpp

@@ -46,7 +46,7 @@ using namespace libfwbuilder;
 
 BackgroundOp::BackgroundOp():running(false),connected(true)
 {
-    error        = NULL;
+    error        = nullptr;
     stop_program = new SyncFlag(false);
     iamdead      = new SyncFlag(false);
     pthread_attr_init(&tattr);
@@ -167,7 +167,7 @@ void *background_thread(void *args)
             delete logger;
             delete isdead; 
             delete void_pair;
-            return(NULL); 
+            return(nullptr); 
         }
         *logger << "Exception: " << ex.toString().c_str() << '\n';
         bop->error=new FWException(ex);
@@ -183,7 +183,7 @@ void *background_thread(void *args)
         delete logger;
         delete isdead; 
         delete void_pair;
-        return(NULL); 
+        return(nullptr); 
     }
 
 /* operation completed - clear "running" flag */
@@ -213,7 +213,7 @@ void *background_thread(void *args)
     delete logger;
     delete void_pair;
 
-    return(NULL);
+    return(nullptr);
 }
 
 }

src/libfwbuilder/src/fwbuilder/Cluster.cpp

@@ -60,7 +60,7 @@ void Cluster::init(FWObjectDatabase *root)
     Firewall::init(root);
     // create one conntrack member group
     FWObject *state_sync_members = getFirstByType(StateSyncClusterGroup::TYPENAME);
-    if (state_sync_members == NULL)
+    if (state_sync_members == nullptr)
     {
         state_sync_members = root->create(StateSyncClusterGroup::TYPENAME);
         state_sync_members->setName("State Sync Group");
@@ -115,7 +115,7 @@ ClusterGroup* Cluster::getStateSyncGroupObject()
     StateSyncClusterGroup *group = StateSyncClusterGroup::cast(
         getFirstByType(StateSyncClusterGroup::TYPENAME));
 
-    if (group == NULL)
+    if (group == nullptr)
     {
         // create a new ClusterGroup object
         group = StateSyncClusterGroup::cast(getRoot()->create(
@@ -159,12 +159,12 @@ FWObject& Cluster::duplicate(const FWObject *obj,
 
 void Cluster::updateLastInstalledTimestamp()
 {
-    setInt("lastInstalled", time(NULL));
+    setInt("lastInstalled", time(nullptr));
 }
 
 void Cluster::updateLastModifiedTimestamp()
 {
-    setInt("lastModified", time(NULL));
+    setInt("lastModified", time(nullptr));
 }
 
 bool Cluster::needsInstall()
@@ -199,7 +199,7 @@ time_t Cluster::getLastCompiled()
 
 void Cluster::updateLastCompiledTimestamp()
 {
-    setInt("lastCompiled", time(NULL));
+    setInt("lastCompiled", time(nullptr));
 }
 
 bool Cluster::getInactive()
@@ -250,7 +250,7 @@ void Cluster::getMembersList(list<libfwbuilder::Firewall*> &members)
         {
             FWObject *member = FWReference::getObject(*j);
             if (ClusterGroupOptions::isA(member)) continue;
-            Firewall *fw = NULL;
+            Firewall *fw = nullptr;
             // as of 05/04 members of StateSyncClusterGroup are interfaces. See
             // tickets #10 and #11
             if (Interface::cast(member))
@@ -284,7 +284,7 @@ bool Cluster::hasMember(Firewall *fw)
         {
             FWObject *member = FWReference::getObject(*j);
             if (ClusterGroupOptions::isA(member)) continue;
-            Firewall *member_fw = NULL;
+            Firewall *member_fw = nullptr;
             // as of 05/04/2009 members of StateSyncClusterGroup are
             // interfaces. See tickets #10 and #11
             if (Interface::cast(member))

src/libfwbuilder/src/fwbuilder/ClusterGroup.cpp

@@ -35,7 +35,7 @@ ClusterGroup::ClusterGroup() : ObjectGroup()
 void ClusterGroup::init(FWObjectDatabase *root)
 {
     FWObject *gopt = getFirstByType(ClusterGroupOptions::TYPENAME);
-    if (gopt == NULL)
+    if (gopt == nullptr)
     {
         gopt = root->create(ClusterGroupOptions::TYPENAME);
         add(gopt);
@@ -76,13 +76,13 @@ void ClusterGroup::fromXML(xmlNodePtr parent)
 
     const char *n;
     n = FROMXMLCAST(xmlGetProp(parent, TOXMLCAST("type")));
-    if (n != NULL)
+    if (n != nullptr)
     {
         setStr("type", n);
         FREEXMLBUFF(n);
     }
     n = FROMXMLCAST(xmlGetProp(parent, TOXMLCAST("master_iface")));
-    if (n != NULL)
+    if (n != nullptr)
     {
         setStr("master_iface", n);
         FREEXMLBUFF(n);
@@ -116,7 +116,7 @@ ClusterGroupOptions* ClusterGroup::getOptionsObject()
     ClusterGroupOptions *gopt = ClusterGroupOptions::cast(
         getFirstByType(ClusterGroupOptions::TYPENAME));
 
-    if (gopt == NULL)
+    if (gopt == nullptr)
     {
         gopt = ClusterGroupOptions::cast(
             getRoot()->create(ClusterGroupOptions::TYPENAME));
@@ -127,7 +127,7 @@ ClusterGroupOptions* ClusterGroup::getOptionsObject()
 
 FWObject& ClusterGroup::duplicateForUndo(const FWObject *obj)
 {
-    if (ClusterGroup::constcast(obj)==NULL) return *this;
+    if (ClusterGroup::constcast(obj)==nullptr) return *this;
 
     setRO(false);
 
@@ -152,7 +152,7 @@ FWObject& ClusterGroup::duplicateForUndo(const FWObject *obj)
         }
     }
     if (their_opts && mine_opts) mine_opts->duplicate(their_opts);
-    if (their_opts && mine_opts==NULL) addCopyOf(their_opts);
+    if (their_opts && mine_opts==nullptr) addCopyOf(their_opts);
 
     shallowDuplicate(obj);
     return *this;
@@ -182,6 +182,6 @@ Interface* ClusterGroup::getInterfaceForMemberFirewall(Firewall *fw)
 
         if (other_iface->isChildOf(fw)) return other_iface;
     }
-    return NULL;
+    return nullptr;
 }
 

src/libfwbuilder/src/fwbuilder/CustomService.cpp

@@ -106,7 +106,7 @@ void CustomService::fromXML(xmlNodePtr root)
         if (cur && !xmlIsBlankNode(cur))
         {
     	    n = FROMXMLCAST(xmlGetProp(cur,TOXMLCAST("platform")));
-            assert(n!=NULL);
+            assert(n!=nullptr);
             cont = FROMXMLCAST( xmlNodeGetContent(cur) );
             if (cont)
             {
@@ -138,8 +138,8 @@ xmlNodePtr CustomService::toXML(xmlNodePtr parent)
     {
         const string &platform  = (*i).first;
         const string &code      = (*i).second;
-        xmlChar *codebuf = xmlEncodeSpecialChars(NULL, STRTOXMLCAST(code) );
+        xmlChar *codebuf = xmlEncodeSpecialChars(nullptr, STRTOXMLCAST(code) );
-        opt=xmlNewChild(me,NULL,TOXMLCAST("CustomServiceCommand"), codebuf);
+        opt=xmlNewChild(me,nullptr,TOXMLCAST("CustomServiceCommand"), codebuf);
         FREEXMLBUFF(codebuf);
 
         xmlNewProp(opt, TOXMLCAST("platform") , STRTOXMLCAST(platform));
@@ -149,7 +149,7 @@ xmlNodePtr CustomService::toXML(xmlNodePtr parent)
 
 bool CustomService::cmp(const FWObject *obj, bool recursive)
 {
-    if (CustomService::constcast(obj)==NULL) return false;
+    if (CustomService::constcast(obj)==nullptr) return false;
     if (!FWObject::cmp(obj, recursive)) return false;
     
     const CustomService *o2 = CustomService::constcast(obj);

src/libfwbuilder/src/fwbuilder/DNSName.cpp

@@ -76,12 +76,12 @@ void DNSName::fromXML(xmlNodePtr root)
     const char *n;
     
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("dnsrec")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
     setStr("dnsrec", n);
     FREEXMLBUFF(n);
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("dnsrectype")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("dnsrectype", n);
         FREEXMLBUFF(n);
@@ -91,7 +91,7 @@ void DNSName::fromXML(xmlNodePtr root)
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("run_time")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
     setStr("run_time", n);
     FREEXMLBUFF(n);
 }
@@ -132,7 +132,7 @@ void DNSName::loadFromSource(bool ipv6, FWOptions *options,
             //Address *a = Address::cast(
             //    getRoot()->create((ipv6)?IPv6::TYPENAME:IPv4::TYPENAME));
             int af = AF_INET;
-            Address *a = NULL;
+            Address *a = nullptr;
             if (ipv6) { a = getRoot()->createIPv6(); af = AF_INET6; }
             else a = getRoot()->createIPv4();
             getRoot()->add(a);
@@ -161,7 +161,7 @@ void DNSName::loadFromSource(bool ipv6, FWOptions *options,
         {
             err << " Using dummy address in test mode";
             int af = AF_INET;
-            Address *a = NULL;
+            Address *a = nullptr;
             if (ipv6)
             {
                 a = getRoot()->createIPv6();

src/libfwbuilder/src/fwbuilder/DynamicGroup.cpp

@@ -45,7 +45,7 @@ DynamicGroup::~DynamicGroup() {}
 
 bool DynamicGroup::validateChild(FWObject *o)
 { 
-    if (FWObjectReference::cast(o)!=NULL) return true;
+    if (FWObjectReference::cast(o)!=nullptr) return true;
 
     return FWObject::validateChild(o);
 }
@@ -55,7 +55,7 @@ void DynamicGroup::fromXML(xmlNodePtr root)
     FWObject::fromXML(root);
 
     for (xmlNodePtr child = root->xmlChildrenNode;
-         child != 0; child = child->next) {
+         child != nullptr; child = child->next) {
         if (child->type != XML_ELEMENT_NODE) continue;
         assert(strcmp(FROMXMLCAST(child->name), "SelectionCriteria") == 0);
 
@@ -87,8 +87,8 @@ xmlNodePtr DynamicGroup::toXML(xmlNodePtr parent)
         if (!splitFilter(*iter, type, keyword)) continue;
         if (!makeFilter(filter, type, keyword)) continue;
 
-        xmlNodePtr item = xmlNewChild(me, NULL,
+        xmlNodePtr item = xmlNewChild(me, nullptr,
-                                      TOXMLCAST("SelectionCriteria"), NULL);
+                                      TOXMLCAST("SelectionCriteria"), nullptr);
         xmlNewProp(item, TOXMLCAST("type"), STRTOXMLCAST(type));
         xmlNewProp(item, TOXMLCAST("keyword"), STRTOXMLCAST(keyword));
     }
@@ -164,22 +164,22 @@ void DynamicGroup::loadFromSource(bool ipv6, FWOptions *options, bool test_mode)
 static bool isInDeletedObjs(FWObject *obj)
 {
     FWObject *lib = obj->getLibrary();
-    return lib == 0 || lib->getId() == FWObjectDatabase::DELETED_OBJECTS_ID;
+    return lib == nullptr || lib->getId() == FWObjectDatabase::DELETED_OBJECTS_ID;
 }
 
 
 bool DynamicGroup::isMemberOfGroup(FWObject *obj)
 {
     if (obj == this) return false;
-    if (ObjectGroup::cast(obj) == 0 && Address::cast(obj) == 0) return false;
+    if (ObjectGroup::cast(obj) == nullptr && Address::cast(obj) == nullptr) return false;
-    if (RuleElement::cast(obj) != 0) return false;
+    if (RuleElement::cast(obj) != nullptr) return false;
     if (isInDeletedObjs(obj)) return false;
 
     /* There's no way to figure out what are the "standard" object
        groups (like "address tables") from within the fwbuilder
        library, so we rely on counting how deep we are in the tree
        instead. */
-    if (ObjectGroup::cast(obj) != 0 &&
+    if (ObjectGroup::cast(obj) != nullptr &&
         obj->getDistanceFromRoot() <= 3) return false;
 
     const set<string> &keywords = obj->getKeywords();

src/libfwbuilder/src/fwbuilder/FWObject.cpp

@@ -67,7 +67,7 @@ string FWObject::dataDir;
 
 void FWObject::fromXML(xmlNodePtr root)
 {
-    assert(root!=NULL);
+    assert(root!=nullptr);
     const char *n;
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("name")));
@@ -92,20 +92,20 @@ void FWObject::fromXML(xmlNodePtr root)
     }
 
     n = FROMXMLCAST(xmlGetProp(root, TOXMLCAST("keywords")));
-    if (n != 0) {
+    if (n != nullptr) {
         keywords = stringToSet(n);
         dbroot->keywords.insert(keywords.begin(), keywords.end());
         FREEXMLBUFF(n);
     }
 
     n = FROMXMLCAST(xmlGetProp(root, TOXMLCAST("subfolders")));
-    if (n != 0) {
+    if (n != nullptr) {
         setStr("subfolders", n);
         FREEXMLBUFF(n);
     }
 
     n = FROMXMLCAST(xmlGetProp(root, TOXMLCAST("folder")));
-    if (n != 0) {
+    if (n != nullptr) {
         setStr("folder", n);
         FREEXMLBUFF(n);
     }
@@ -125,7 +125,7 @@ void FWObject::fromXML(xmlNodePtr root)
         if (cur && !xmlIsBlankNode(cur))
         {
             FWObject *o = dbr->createFromXML(cur);
-            if (o!=NULL) 
+            if (o!=nullptr) 
             {
                 /* Add w/o validation. Trust XML to do that */
 		add(o, false);
@@ -157,9 +157,9 @@ xmlNodePtr FWObject::toXML(xmlNodePtr parent, bool process_children)
 
     xmlNodePtr me = xmlNewChild(
         parent,
-        NULL,
+        nullptr,
         xml_name.empty() ? STRTOXMLCAST(getTypeName()) : STRTOXMLCAST(xml_name),
-        NULL);
+        nullptr);
 
     if (id!=-1)
     {
@@ -199,8 +199,8 @@ FWObject::FWObject()
 {
     busy = false;
     ref_counter = 0;
-    parent = NULL;
+    parent = nullptr;
-    dbroot = NULL;
+    dbroot = nullptr;
     name = "";
     comment = "";
     id = -1;
@@ -217,8 +217,8 @@ FWObject::FWObject(bool new_id)
 {
     busy = false;
     ref_counter = 0;
-    parent = NULL;
+    parent = nullptr;
-    dbroot = NULL;
+    dbroot = nullptr;
     name = "";
     comment = "";
     id = -1;
@@ -261,7 +261,7 @@ void* FWObject::getPrivateData(const string &key) const
 {
     map<string, void*>::const_iterator it = private_data.find(key);
     if(it == private_data.end())
-        return NULL;
+        return nullptr;
     else
         return it->second;
 }
@@ -323,7 +323,7 @@ FWObject* FWObject::findObjectByName(const string &type,
         if(o) return o;
     }
 
-    return NULL; // not found
+    return nullptr; // not found
 }
 
 FWObject* FWObject::findObjectByAttribute(const std::string &attr,
@@ -340,7 +340,7 @@ FWObject* FWObject::findObjectByAttribute(const std::string &attr,
         if(o) return o;
     }
 
-    return NULL; // not found
+    return nullptr; // not found
 }
 
 
@@ -425,10 +425,10 @@ FWObject& FWObject::duplicate(const FWObject *x, bool preserve_id)
 
 FWObject* FWObject::addCopyOf(const FWObject *x, bool preserve_id)
 {
-    if (x==NULL) return NULL;
+    if (x==nullptr) return nullptr;
     FWObject *o1;
     FWObjectDatabase *root = getRoot();
-    if (root==NULL) root = x->getRoot();
+    if (root==nullptr) root = x->getRoot();
     // do not prepopulte children for objects that do that automatically
     // in their constructor
     o1 = root->create(x->getTypeName(), -1);
@@ -485,8 +485,8 @@ FWObject& FWObject::shallowDuplicate(const FWObject *x, bool preserve_id)
             setId(old_id);
     }
 
-    if (dbroot==NULL) setRoot(x->getRoot());
+    if (dbroot==nullptr) setRoot(x->getRoot());
-    if (dbroot!=NULL) dbroot->addToIndex(this);
+    if (dbroot!=nullptr) dbroot->addToIndex(this);
 
     setReadOnly(x->ro);
     setDirty(true);
@@ -499,7 +499,7 @@ class InheritsFWOptions: public std::unary_function<FWObject*, bool>
     InheritsFWOptions() {}
     bool operator()(const FWObject *o) const 
     {
-        return FWOptions::constcast(o)!=NULL;
+        return FWOptions::constcast(o)!=nullptr;
     }
 };
 
@@ -540,7 +540,7 @@ const string& FWObject::getLibraryName() const
 FWObject*  FWObject::getLibrary() const
 {
     const FWObject *p=this;
-    while (p!=NULL && !Library::isA(p) ) p=p->getParent();
+    while (p!=nullptr && !Library::isA(p) ) p=p->getParent();
     return (FWObject*)p;
 }
 
@@ -552,7 +552,7 @@ FWObjectDatabase* FWObject::getRoot() const
 int FWObject::getDistanceFromRoot() const
 {
     int count = 0;
-    for (FWObject *obj = getParent(); obj != 0; obj = obj->getParent()) {
+    for (FWObject *obj = getParent(); obj != nullptr; obj = obj->getParent()) {
         count++;
     }
     return count;
@@ -572,9 +572,9 @@ string FWObject::getPath(bool relative, bool detailed) const
     list<string> res;
     const FWObject *p = this;
 
-    if (p == NULL) res.push_front("(0x0)");
+    if (p == nullptr) res.push_front("(0x0)");
 
-    while (p!=NULL)
+    while (p!=nullptr)
     {
         if (relative && Library::isA(p)) break;
         ostringstream s;
@@ -620,7 +620,7 @@ void FWObject::setId(int c)
     {
         id = c;
         setDirty(true);
-        if (dbroot!=NULL) dbroot->addToIndex(this);
+        if (dbroot!=nullptr) dbroot->addToIndex(this);
     }
 }
 
@@ -749,7 +749,7 @@ void FWObject::dump(std::ostream &f,bool recursive,bool brief,int offset) const
         {
 	    list<FWObject*>::const_iterator m;
 	    for (m=begin(); m!=end(); ++m) {
-		if (  (o=(*m))!=NULL)  o->dump(f,recursive,brief,offset+2);
+		if (  (o=(*m))!=nullptr)  o->dump(f,recursive,brief,offset+2);
 	    }
 	}
     } else
@@ -764,7 +764,7 @@ void FWObject::dump(std::ostream &f,bool recursive,bool brief,int offset) const
 	f << string(offset,' ') << "Type:   " << getTypeName() << endl;
 	f << string(offset,' ') << "Library:" << getLibrary() << endl;
 //    f << string(offset,' ') << "Path:   " << getPath() << endl;
-	n=(getParent()!=NULL)?getParent()->getName():"";
+	n=(getParent()!=nullptr)?getParent()->getName():"";
 	f << string(offset,' ') << "Parent: " << getParent()
 	  << "  name=" << n << endl;
 	f << string(offset,' ') << "Root:   " << getRoot() << endl;
@@ -780,7 +780,7 @@ void FWObject::dump(std::ostream &f,bool recursive,bool brief,int offset) const
 	    list<FWObject*>::const_iterator m;
 	    for (m=begin(); m!=end(); ++m)
             {
-		if (  (o=(*m))!=NULL)  o->dump(f,recursive,brief,offset+2);
+		if (  (o=(*m))!=nullptr)  o->dump(f,recursive,brief,offset+2);
 	    }
 	}
     }
@@ -807,7 +807,7 @@ void FWObject::_adopt(FWObject *obj)
 void FWObject::addAt(int where_id, FWObject *obj)
 {
     FWObject *p = getRoot()->findInIndex( where_id );
-    assert (p!=NULL);
+    assert (p!=nullptr);
     p->add(obj);
 }
 
@@ -816,7 +816,7 @@ void FWObject::add(FWObject *obj, bool validate)
     checkReadOnly();
 
     FWObject *old_parent = obj->getParent();
-    if (old_parent != NULL)
+    if (old_parent != nullptr)
     {
         cerr << "WARNING: object " << obj << " "
              << "(name: " << obj->getName()
@@ -829,7 +829,7 @@ void FWObject::add(FWObject *obj, bool validate)
              << " type: " << getTypeName() << ") "
              << endl;
 
-        assert(old_parent == NULL);
+        assert(old_parent == nullptr);
     }
 
     // do not allow to add the same object twice
@@ -858,7 +858,7 @@ void FWObject::add(FWObject *obj, bool validate)
 void FWObject::reparent(FWObject *obj, bool validate)
 {
     FWObject *old_parent = obj->getParent();
-    if (old_parent != NULL && old_parent != this)
+    if (old_parent != nullptr && old_parent != this)
     {
         old_parent->remove(obj, false);
         add(obj, validate);
@@ -896,8 +896,8 @@ void FWObject::insert_before(FWObject *o1, FWObject *obj)
 {
     checkReadOnly();
 
-    if (obj == NULL) return;
+    if (obj == nullptr) return;
-    if (o1 == NULL)
+    if (o1 == nullptr)
     {
         insert(begin(), obj);
         _adopt(obj);
@@ -918,7 +918,7 @@ void FWObject::insert_after(FWObject *o1, FWObject *obj)
 {
     checkReadOnly();
 
-    if (obj == NULL) return;
+    if (obj == nullptr) return;
 
     list<FWObject*>::iterator m = find(begin(), end(), o1);
     if (m != end())
@@ -964,7 +964,7 @@ void FWObject::remove(FWObject *obj, bool delete_if_last)
             delete obj;
         }
 
-        obj->parent = NULL;
+        obj->parent = nullptr;
     }
 }
 
@@ -1130,7 +1130,7 @@ bool FWObject::verifyTree()
         FWObject *o_parent = o->getParent();
         if (o_parent != this)
         {
-            if (o_parent != NULL)
+            if (o_parent != nullptr)
             {
                 cerr << "WARNING: Object " << o << " (name: '" << o->getName()
                      << "' type: " << o->getTypeName() << ")"
@@ -1264,7 +1264,7 @@ bool FWObject::isChildOf(FWObject *obj)
     cerr << endl;
 #endif
     FWObject *p=this;
-    while (p!=NULL && p!=obj) p=p->getParent();
+    while (p!=nullptr && p!=obj) p=p->getParent();
     return (p==obj);
 }
 
@@ -1289,9 +1289,9 @@ FWObject* FWObject::getById  (int id, bool recursive)
         int oid = o->getId();
         if(id==oid) return o;
 
-        if(recursive && (o=o->getById(id, true))!=NULL ) return o;
+        if(recursive && (o=o->getById(id, true))!=nullptr ) return o;
     }
-    return NULL; // not found
+    return nullptr; // not found
 }
 
 FWObject* FWObject::getFirstByType(const string &type_name) const
@@ -1335,7 +1335,7 @@ FWObjectTypedChildIterator FWObject::findByType(const std::string &type_name) co
 void  FWObject::setDirty(bool f)
 {
     FWObjectDatabase *dbr = getRoot();
-    if (dbr==NULL) return;
+    if (dbr==nullptr) return;
     if (dbr==this) dirty = f;
     else dbr->dirty = f;
 }
@@ -1343,7 +1343,7 @@ void  FWObject::setDirty(bool f)
 bool FWObject::isDirty()
 {
     FWObjectDatabase *dbr = getRoot();
-    if (dbr==NULL) return false;
+    if (dbr==nullptr) return false;
     return (dbr->dirty);
 }
 
@@ -1376,7 +1376,7 @@ void FWObject::setReadOnly(bool f)
 bool FWObject::isReadOnly()
 {
     FWObjectDatabase *dbr = getRoot();
-    if (dbr==NULL || dbr->busy) return false;
+    if (dbr==nullptr || dbr->busy) return false;
     FWObject *p=this;
     while (p)
     {
@@ -1504,7 +1504,7 @@ FWObject::tree_iterator& FWObject::tree_iterator::operator++()
     }
 
     FWObject *p = node;
-    while (node->getParent()!=NULL)
+    while (node->getParent()!=nullptr)
     {
         p = node->getParent();
 
@@ -1591,7 +1591,7 @@ void FWObject::replaceReferenceInternal(int old_id, int new_id, int &counter)
     if (old_id == new_id) return;
 
     FWReference *ref = FWReference::cast(this);
-    if (ref==NULL)
+    if (ref==nullptr)
     {
         for (FWObject::iterator j1=begin(); j1!=end(); ++j1)
             (*j1)->replaceReferenceInternal(old_id, new_id, counter);
@@ -1607,7 +1607,7 @@ void FWObject::replaceReferenceInternal(int old_id, int new_id, int &counter)
 
 void FWObject::findDependencies(list<FWObject*> &deps)
 {
-    int loop_id = time(NULL);
+    int loop_id = time(nullptr);
     _findDependencies_internal(this, deps, loop_id);
 }
 
@@ -1615,9 +1615,9 @@ void FWObject::_findDependencies_internal(FWObject *obj,
                                           list<FWObject*> &deps,
                                           int anti_loop_id)
 {
-    if (obj==NULL) return;
+    if (obj==nullptr) return;
     if (FWOptions::cast(obj)) return;
-    if (FWReference::cast(obj)!=NULL)
+    if (FWReference::cast(obj)!=nullptr)
     {
         _findDependencies_internal(FWReference::cast(obj)->getPointer(),
                                    deps, anti_loop_id);

src/libfwbuilder/src/fwbuilder/FWOptions.cpp

@@ -55,7 +55,7 @@ void FWOptions::fromXML(xmlNodePtr root)
         if (cur && !xmlIsBlankNode(cur))    
         {
             n = FROMXMLCAST(xmlGetProp(cur,TOXMLCAST("name")));
-            assert(n!=NULL);
+            assert(n!=nullptr);
             cont = FROMXMLCAST( xmlNodeGetContent(cur) );
             if (cont)
             {
@@ -72,9 +72,9 @@ xmlNodePtr FWOptions::toXML(xmlNodePtr root)
     xmlNodePtr opt;
 
     xmlNodePtr me = xmlNewChild(
-        root, NULL, 
+        root, nullptr, 
         xml_name.empty() ? STRTOXMLCAST(getTypeName()) : STRTOXMLCAST(xml_name),
-        NULL);
+        nullptr);
 
     for(map<string, string>::const_iterator i=data.begin(); i!=data.end(); ++i)
     {
@@ -87,7 +87,7 @@ xmlNodePtr FWOptions::toXML(xmlNodePtr root)
                                                 STRTOXMLCAST(value) );
 //        xmlChar *valbuf = xmlEncodeEntitiesReentrant(root->doc,
 //                                                     STRTOXMLCAST(value) );
-        opt = xmlNewChild(me, NULL, TOXMLCAST("Option"), valbuf);
+        opt = xmlNewChild(me, nullptr, TOXMLCAST("Option"), valbuf);
         FREEXMLBUFF(valbuf);
 
         xmlNewProp(opt, TOXMLCAST("name") , STRTOXMLCAST(name));

src/libfwbuilder/src/fwbuilder/FWReference.cpp

@@ -48,7 +48,7 @@ FWReference::FWReference(FWObject *p)
 
 FWReference::FWReference()
 {
-    setPointer(NULL);
+    setPointer(nullptr);
 }
 
 FWReference::~FWReference()  {}
@@ -56,11 +56,11 @@ FWReference::~FWReference()  {}
 
 void FWReference::fromXML(xmlNodePtr root)
 {
-    assert(root!=NULL);
+    assert(root!=nullptr);
     FWObject::fromXML(root);
 
     const char *n = FROMXMLCAST(xmlGetProp(root, TOXMLCAST("ref")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
     str_ref = n;
     //setInt("ref", n);
     // if object with id str_ref has not been loaded yet, 
@@ -75,9 +75,9 @@ xmlNodePtr FWReference::toXML(xmlNodePtr parent)
 {
     xmlNodePtr me = xmlNewChild(
         parent,
-        NULL,
+        nullptr,
         xml_name.empty() ? STRTOXMLCAST(getTypeName()) : STRTOXMLCAST(xml_name),
-        NULL);
+        nullptr);
 
     if (int_ref == -1 && !str_ref.empty())
         int_ref = FWObjectDatabase::getIntId(str_ref);
@@ -102,7 +102,7 @@ FWObject& FWReference::shallowDuplicate(const FWObject *_other,
 bool FWReference::cmp(const FWObject *obj, bool /* UNUSED recursive */)
 {
     const FWReference *rx = FWReference::constcast(obj);
-    if (rx == NULL) return false;
+    if (rx == nullptr) return false;
     if (int_ref != rx->int_ref || str_ref != rx->str_ref) return false;
     return true;
 }
@@ -167,7 +167,7 @@ void FWReference::dump(std::ostream &f, bool recursive, bool brief, int offset)
 
 FWObject* FWReference::getObject(FWObject* o)
 {
-    if (o==NULL) return NULL;
+    if (o==nullptr) return nullptr;
-    if (FWReference::cast(o)!=NULL) return FWReference::cast(o)->getPointer();
+    if (FWReference::cast(o)!=nullptr) return FWReference::cast(o)->getPointer();
     return o;
 }

src/libfwbuilder/src/fwbuilder/Firewall.cpp

@@ -66,7 +66,7 @@ Firewall::Firewall()
 void Firewall::init(FWObjectDatabase *root)
 {
     FWObject *opt = getFirstByType(FirewallOptions::TYPENAME);
-    if (opt == NULL)
+    if (opt == nullptr)
     {
         add( root->createFirewallOptions() );
         RuleSet *p;
@@ -87,45 +87,45 @@ Firewall::~Firewall()  {}
 void Firewall::fromXML(xmlNodePtr root)
 {
     const char *n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("platform")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
     setStr("platform", n);
     FREEXMLBUFF(n);
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("version")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("version", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("host_OS")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("host_OS", n);
         FREEXMLBUFF(n);
     }
     
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("lastModified")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         setStr("lastModified", n);
         FREEXMLBUFF(n);
     }
     
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("lastInstalled")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         setStr("lastInstalled", n);
         FREEXMLBUFF(n);
     }
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("lastCompiled")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         setStr("lastCompiled", n);
         FREEXMLBUFF(n);
     }
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("inactive")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         setStr("inactive", n);
         FREEXMLBUFF(n);
@@ -344,12 +344,12 @@ FWObject& Firewall::duplicateForUndo(const FWObject *obj)
 
 void  Firewall::updateLastInstalledTimestamp()
 {
-    setInt("lastInstalled",time(NULL));
+    setInt("lastInstalled",time(nullptr));
 }
 
 void Firewall::updateLastModifiedTimestamp()
 {
-    setInt("lastModified",time(NULL));
+    setInt("lastModified",time(nullptr));
 }
 
 bool Firewall::needsInstall()
@@ -382,7 +382,7 @@ time_t Firewall::getLastCompiled()
 }
 void   Firewall::updateLastCompiledTimestamp()
 {
-    setInt("lastCompiled",time(NULL));
+    setInt("lastCompiled",time(nullptr));
 }
 
 bool   Firewall::getInactive()

src/libfwbuilder/src/fwbuilder/Group.cpp

@@ -96,8 +96,8 @@ bool Group::hasMember(FWObject *o)
 FWObject& Group::duplicateForUndo(const FWObject *obj)
 {
     setRO(false);
-    if ((obj->size() && FWReference::cast(obj->front())!=NULL) ||
+    if ((obj->size() && FWReference::cast(obj->front())!=nullptr) ||
-        (this->size() && FWReference::cast(this->front())!=NULL))
+        (this->size() && FWReference::cast(this->front())!=nullptr))
     {
         destroyChildren();
         for(list<FWObject*>::const_iterator m=obj->begin(); m!=obj->end(); ++m)

src/libfwbuilder/src/fwbuilder/Host.cpp

@@ -48,7 +48,7 @@ Host::Host()
 void Host::init(FWObjectDatabase *root)
 {
     FWObject *opt = getFirstByType(HostOptions::TYPENAME);
-    if (opt == NULL)
+    if (opt == nullptr)
         add( root->createHostOptions() );
 }
 
@@ -69,7 +69,7 @@ xmlNodePtr Host::toXML(xmlNodePtr parent)
     FWObject *o;
 
     for(FWObjectTypedChildIterator j=findByType(Interface::TYPENAME); j!=j.end(); ++j)
- 	if((o=(*j))!=NULL )
+ 	if((o=(*j))!=nullptr )
  	    o->toXML(me);
     
     o=getFirstByType( Management::TYPENAME );
@@ -146,13 +146,13 @@ const InetAddr* Host::getManagementAddress()
 
         }
     }    
-    return NULL;
+    return nullptr;
 }
 
 const Address* Host::getAddressObject() const
 {
     FWObjectTypedChildIterator j = findByType(Interface::TYPENAME);
-    if (j == j.end()) return NULL;
+    if (j == j.end()) return nullptr;
     return Interface::cast(*j)->getAddressObject();
 }
 
@@ -176,7 +176,7 @@ int Host::countInetAddresses(bool skip_loopback) const
 FWObject* Host::getParentHost(FWObject *obj)
 {
     FWObject *parent_h = obj;
-    while (parent_h != NULL && Host::cast(parent_h) == NULL)
+    while (parent_h != nullptr && Host::cast(parent_h) == nullptr)
         parent_h = parent_h->getParent();
     return parent_h;
 }

src/libfwbuilder/src/fwbuilder/ICMPService.cpp

@@ -52,12 +52,12 @@ void ICMPService::fromXML(xmlNodePtr root)
     FWObject::fromXML(root);
 
     const char *n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("type")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
     setStr("type", n);
     FREEXMLBUFF(n);
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("code")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         setStr("code", n);
         FREEXMLBUFF(n);

src/libfwbuilder/src/fwbuilder/IPService.cpp

@@ -94,82 +94,82 @@ void IPService::fromXML(xmlNodePtr root)
     FWObject::fromXML(root);
 
     const char *n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("protocol_num")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
     setStr("protocol_num", n);
     FREEXMLBUFF(n);
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("fragm")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         setStr("fragm", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("short_fragm")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         setStr("short_fragm", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("any_opt")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         setStr("any_opt", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("lsrr")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         setStr("lsrr", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("ssrr")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         setStr("ssrr", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("rr")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         setStr("rr", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("ts")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         setStr("ts", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("tos")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         setStr("tos", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("dscp")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         setStr("dscp", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("rtralt")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         setStr("rtralt", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("rtralt_value")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         setStr("rtralt_value", n);
         FREEXMLBUFF(n);

src/libfwbuilder/src/fwbuilder/IPv4.cpp

@@ -66,7 +66,7 @@ void IPv4::fromXML(xmlNodePtr root)
     FWObject::fromXML(root);
 
     const char* n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("address")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
 
     // strip whitespace and other non-numeric characters at the beginng and end
     string addr(n);
@@ -83,7 +83,7 @@ void IPv4::fromXML(xmlNodePtr root)
     FREEXMLBUFF(n);
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("netmask")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
 
     string netm(n);
     first = netm.find_first_of("0123456789");

src/libfwbuilder/src/fwbuilder/IPv6.cpp

@@ -81,12 +81,12 @@ void IPv6::fromXML(xmlNodePtr root)
     FWObject::fromXML(root);
 
     const char* n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("address")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
     setAddress(InetAddr(AF_INET6, n));
     FREEXMLBUFF(n);
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("netmask")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
     if (strlen(n))
     {
         if (string(n).find(":")!=string::npos)

src/libfwbuilder/src/fwbuilder/InetAddrMask.cpp

@@ -69,11 +69,11 @@ InetAddrMask::InetAddrMask(bool)
     // variables. This constructor should only be used by classes that
     // inherit InetAddrMask and create address, netmask themselves,
     // such as Inet6AddrMask
-    address = NULL;
+    address = nullptr;
-    netmask = NULL;
+    netmask = nullptr;
-    broadcast_address = NULL;
+    broadcast_address = nullptr;
-    network_address = NULL;
+    network_address = nullptr;
-    last_host = NULL;
+    last_host = nullptr;
 }
 
 InetAddrMask::InetAddrMask()
@@ -146,11 +146,11 @@ InetAddrMask::InetAddrMask(const string &s)
 
 InetAddrMask::~InetAddrMask()
 {
-    if (address!=NULL) delete address;
+    if (address!=nullptr) delete address;
-    if (netmask!=NULL) delete netmask;
+    if (netmask!=nullptr) delete netmask;
-    if (network_address!=NULL) delete network_address;
+    if (network_address!=nullptr) delete network_address;
-    if (broadcast_address!=NULL) delete broadcast_address;
+    if (broadcast_address!=nullptr) delete broadcast_address;
-    if (last_host!=NULL) delete last_host;
+    if (last_host!=nullptr) delete last_host;
 }
 
 bool InetAddrMask::isAny()

src/libfwbuilder/src/fwbuilder/Interface.cpp

@@ -105,7 +105,7 @@ FWObject& Interface::duplicate(const FWObject *x, bool preserve_id)
     FWObject::duplicate(x, preserve_id);
 
     const Interface *rx = Interface::constcast(x);
-    if (rx!=NULL)
+    if (rx!=nullptr)
     {
         bcast_bits = rx->bcast_bits;
         ostatus    = rx->ostatus;
@@ -130,7 +130,7 @@ void Interface::duplicateWithIdMapping(const FWObject *src,
     {
         FWObject *src_obj = *m;
         FWObject *dst_obj_copy = addCopyOf(src_obj, preserve_id);
-        if (src_obj!=NULL && dst_obj_copy!=NULL)
+        if (src_obj!=nullptr && dst_obj_copy!=nullptr)
             id_mapping[src_obj->getId()] = dst_obj_copy->getId();
     }
 
@@ -140,7 +140,7 @@ void Interface::duplicateWithIdMapping(const FWObject *src,
 bool Interface::cmp(const FWObject *obj, bool recursive)
 {
     const Interface *rx = Interface::constcast(obj);
-    if (rx == NULL) return false;
+    if (rx == nullptr) return false;
     if (bcast_bits != rx->bcast_bits ||
         ostatus != rx->ostatus ||
         snmp_type != rx->snmp_type) return false;
@@ -154,56 +154,56 @@ void Interface::fromXML(xmlNodePtr root)
     const char *n;
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("security_level")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("security_level",n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("dyn")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("dyn",n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("unnum")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("unnum",n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("unprotected")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("unprotected",n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("dedicated_failover")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("dedicated_failover",n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("mgmt")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("mgmt",n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("label")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("label",n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("network_zone")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("network_zone", n);
         FREEXMLBUFF(n);
@@ -230,19 +230,19 @@ xmlNodePtr Interface::toXML(xmlNodePtr parent)
     for(FWObjectTypedChildIterator j1=findByType(IPv4::TYPENAME);
         j1!=j1.end(); ++j1)
     {
-        if ((o=(*j1))!=NULL )
+        if ((o=(*j1))!=nullptr )
             o->toXML(me);
     }
     for(FWObjectTypedChildIterator j1=findByType(IPv6::TYPENAME);
         j1!=j1.end(); ++j1)
     {
-        if ((o=(*j1))!=NULL )
+        if ((o=(*j1))!=nullptr )
             o->toXML(me);
     }
     for(FWObjectTypedChildIterator j2=findByType(physAddress::TYPENAME);
         j2!=j2.end(); ++j2)
     {
-        if ((o=(*j2))!=NULL )
+        if ((o=(*j2))!=nullptr )
             o->toXML(me);
     }
 
@@ -256,7 +256,7 @@ xmlNodePtr Interface::toXML(xmlNodePtr parent)
     for(FWObjectTypedChildIterator j1=findByType(Interface::TYPENAME);
         j1!=j1.end(); ++j1)
     {
-        if((o=(*j1))!=NULL)
+        if((o=(*j1))!=nullptr)
             o->toXML(me);
     }
 
@@ -276,14 +276,14 @@ FWOptions* Interface::getOptionsObject()
 {
     FWOptions *iface_opt = FWOptions::cast(getFirstByType(InterfaceOptions::TYPENAME));
 
-    if (iface_opt == NULL)
+    if (iface_opt == nullptr)
     {
         iface_opt = FWOptions::cast(getRoot()->create(InterfaceOptions::TYPENAME));
         add(iface_opt);
 
         // set default interface options
         const FWObject *parent_host = Host::getParentHost(this);
-        if (parent_host != NULL)
+        if (parent_host != nullptr)
         {
             const string host_OS = parent_host->getStr("host_OS");
             try
@@ -303,7 +303,7 @@ FWOptions* Interface::getOptionsObject()
 FWOptions* Interface::getOptionsObjectConst() const
 {
     FWOptions *iface_opt = FWOptions::cast(getFirstByType(InterfaceOptions::TYPENAME));
-    if (iface_opt == NULL)
+    if (iface_opt == nullptr)
         cerr << "Interface "
              << getName()
              << " ("
@@ -437,7 +437,7 @@ physAddress*  Interface::getPhysicalAddress () const
 void  Interface::setPhysicalAddress(const std::string &paddr)
 {
     physAddress *pa=getPhysicalAddress();
-    if (pa!=NULL) 
+    if (pa!=nullptr) 
     {
         pa->setPhysAddress(paddr);
     } else
@@ -461,7 +461,7 @@ void Interface::setLabel(const string& n)
 const Address* Interface::getAddressObject() const
 {
     Address *res = Address::cast(getFirstByType(IPv4::TYPENAME));
-    if (res==NULL)
+    if (res==nullptr)
         res = Address::cast(getFirstByType(IPv6::TYPENAME));
     return res;
 }
@@ -493,7 +493,7 @@ int Interface::countInetAddresses(bool skip_loopback) const
 
 bool Interface::isFailoverInterface() const
 {
-    return getFirstByType(FailoverClusterGroup::TYPENAME) != NULL;
+    return getFirstByType(FailoverClusterGroup::TYPENAME) != nullptr;
 }
 
 void Interface::replaceReferenceInternal(int old_id, int new_id, int &counter)

src/libfwbuilder/src/fwbuilder/InterfaceData.cpp

@@ -63,7 +63,7 @@ InterfaceData::InterfaceData(const InterfaceData& other) : addr_mask()
             InetAddrMask *am;
             const InetAddr *ad = (*i)->getAddressPtr();
             const InetAddr *nm = (*i)->getNetmaskPtr();
-            if (ad==NULL) continue;
+            if (ad==nullptr) continue;
             if (ad->isV6())
             {
                 am = new Inet6AddrMask();
@@ -109,7 +109,7 @@ InterfaceData::InterfaceData(const Interface &iface)  : addr_mask()
     isUnnumbered = iface.isUnnumbered();
     isBridgePort = iface.isBridgePort();
     libfwbuilder::physAddress *pa = iface.getPhysicalAddress();
-    if (pa!=NULL)
+    if (pa!=nullptr)
         mac_addr = pa->getPhysAddress();
     label = iface.getLabel();
     networkZone = iface.getStr("network_zone");

src/libfwbuilder/src/fwbuilder/Interval.cpp

@@ -184,42 +184,42 @@ void Interval::fromXML(xmlNodePtr root)
     const char *n;
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("from_minute")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("from_minute", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("from_hour")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("from_hour", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("from_day")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("from_day", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("from_month")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("from_month", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("from_year")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("from_year", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("from_weekday")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("from_weekday", n);
         FREEXMLBUFF(n);
@@ -227,49 +227,49 @@ void Interval::fromXML(xmlNodePtr root)
 
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("to_minute")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("to_minute", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("to_hour")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("to_hour", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("to_day")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("to_day", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("to_month")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("to_month", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("to_year")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("to_year", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("to_weekday")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("to_weekday", n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("days_of_week")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         setStr("days_of_week", n);
         FREEXMLBUFF(n);

src/libfwbuilder/src/fwbuilder/IntervalGroup.cpp

@@ -43,7 +43,7 @@ IntervalGroup::~IntervalGroup() {}
 bool  IntervalGroup::validateChild(FWObject *o)
 { 
     FWObject *oo = o;
-    if (FWObjectReference::cast(o)!=NULL) 
+    if (FWObjectReference::cast(o)!=nullptr) 
         oo = FWObjectReference::cast(o)->getPointer();
 
     string otype = oo->getTypeName();

src/libfwbuilder/src/fwbuilder/Library.cpp

@@ -49,7 +49,7 @@ bool  Library::validateChild(FWObject*)
 void Library::fromXML(xmlNodePtr root)
 {
     const char *n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("color")));
-    if(n!=NULL)  // color is not a mandatory attribute
+    if(n!=nullptr)  // color is not a mandatory attribute
     {
         setStr("color", n);
         FREEXMLBUFF(n);

src/libfwbuilder/src/fwbuilder/Management.cpp

@@ -105,7 +105,7 @@ xmlNodePtr Management::toXML(xmlNodePtr parent)
 
 bool Management::cmp(const FWObject *obj, bool recursive)
 {
-    if (Management::constcast(obj)==NULL) return false;
+    if (Management::constcast(obj)==nullptr) return false;
     if (!FWObject::cmp(obj, recursive)) return false;
 
     const Management *o2=Management::constcast(obj);
@@ -242,7 +242,7 @@ xmlNodePtr PolicyInstallScript::toXML(xmlNodePtr parent)
 
 bool PolicyInstallScript::cmp(const FWObject *obj, bool recursive)
 {
-    if (PolicyInstallScript::constcast(obj)==NULL) return false;
+    if (PolicyInstallScript::constcast(obj)==nullptr) return false;
     if (!FWObject::cmp(obj, recursive)) return false;
 
     const PolicyInstallScript *o2=PolicyInstallScript::constcast(obj);
@@ -348,7 +348,7 @@ xmlNodePtr SNMPManagement::toXML(xmlNodePtr parent)
 
 bool SNMPManagement::cmp(const FWObject *obj, bool recursive)
 {
-    if (SNMPManagement::constcast(obj)==NULL) return false;
+    if (SNMPManagement::constcast(obj)==nullptr) return false;
     if (!FWObject::cmp(obj, recursive)) return false;
 
     const SNMPManagement *o2=SNMPManagement::constcast(obj);
@@ -424,12 +424,12 @@ void FWBDManagement::setEnabled(bool v)
 void FWBDManagement::fromXML(xmlNodePtr parent)
 {
     const char *n=FROMXMLCAST(xmlGetProp(parent,TOXMLCAST("identity")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
     identity_id = n;
     FREEXMLBUFF(n);
     
     n=FROMXMLCAST(xmlGetProp(parent,TOXMLCAST("port")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
     port = atoi(n);
     FREEXMLBUFF(n);
 
@@ -456,7 +456,7 @@ xmlNodePtr FWBDManagement::toXML(xmlNodePtr parent)
 
 bool FWBDManagement::cmp(const FWObject *obj, bool recursive)
 {
-    if (FWBDManagement::constcast(obj)==NULL) return false;
+    if (FWBDManagement::constcast(obj)==nullptr) return false;
     if (!FWObject::cmp(obj, recursive)) return false;
 
     const FWBDManagement *o2=FWBDManagement::constcast(obj);

src/libfwbuilder/src/fwbuilder/NAT.cpp

@@ -47,7 +47,7 @@ NAT::~NAT()  {}
 Rule* NAT::createRule()
 {
     FWObjectDatabase* db=getRoot();
-    assert(db!=NULL);
+    assert(db!=nullptr);
     return db->createNATRule();
 }
 

src/libfwbuilder/src/fwbuilder/Network.cpp

@@ -64,12 +64,12 @@ void Network::fromXML(xmlNodePtr root)
     FWObject::fromXML(root);
     
     const char *n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("address")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
     setAddress(InetAddr(n));
     FREEXMLBUFF(n);
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("netmask")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
     setNetmask(InetAddr(n));
     FREEXMLBUFF(n);
 }
@@ -120,12 +120,12 @@ const InetAddr* Network::getFirstHostPtr() const
 {
     const InetAddrMask *inet_addr_mask = getInetAddrMaskObjectPtr();
     if (inet_addr_mask) return inet_addr_mask->getFirstHostPtr();
-    return NULL;
+    return nullptr;
 }
 
 const InetAddr* Network::getLastHostPtr() const
 {
     const InetAddrMask *inet_addr_mask = getInetAddrMaskObjectPtr();
     if (inet_addr_mask) return inet_addr_mask->getLastHostPtr();
-    return NULL;
+    return nullptr;
 }

src/libfwbuilder/src/fwbuilder/NetworkIPv6.cpp

@@ -78,12 +78,12 @@ void NetworkIPv6::fromXML(xmlNodePtr root)
     FWObject::fromXML(root);
     
     const char *n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("address")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
     setAddress(InetAddr(AF_INET6, n));
     FREEXMLBUFF(n);
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("netmask")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
     if (strlen(n))
     {
         if (string(n).find(":")!=string::npos)

src/libfwbuilder/src/fwbuilder/ObjectGroup.cpp

@@ -58,14 +58,14 @@ ObjectGroup::~ObjectGroup() {}
 
 bool ObjectGroup::validateChild(FWObject *o)
 { 
-    if (FWObjectReference::cast(o)!=NULL) return true;
+    if (FWObjectReference::cast(o)!=nullptr) return true;
 
     return (FWObject::validateChild(o) && 
-            Service::cast(o)==NULL &&
+            Service::cast(o)==nullptr &&
-            ServiceGroup::cast(o)==NULL &&
+            ServiceGroup::cast(o)==nullptr &&
-            Interval::cast(o)==NULL &&
+            Interval::cast(o)==nullptr &&
-            FWServiceReference::cast(o)==NULL &&
+            FWServiceReference::cast(o)==nullptr &&
-            RuleSet::cast(o)==NULL);
+            RuleSet::cast(o)==nullptr);
 }
 
 xmlNodePtr ObjectGroup::toXML(xmlNodePtr parent)

src/libfwbuilder/src/fwbuilder/ObjectMatcher.cpp

@@ -94,7 +94,7 @@ bool ObjectMatcher::complexMatch(Address *obj1, Address *obj2)
     }
 
     void* res = obj1->dispatch(this, obj2);
-    return (res != NULL);
+    return (res != nullptr);
 }
 
 /**
@@ -279,11 +279,11 @@ void* ObjectMatcher::dispatch(Interface* obj1, void* _obj2)
 
     if (obj1->getParent()->getId() == obj2->getId()) return obj1;
 
-    if (!obj1->isRegular()) return NULL;
+    if (!obj1->isRegular()) return nullptr;
-    if ((obj1->getByType(IPv4::TYPENAME)).size()>1) return NULL;
+    if ((obj1->getByType(IPv4::TYPENAME)).size()>1) return nullptr;
-    if ((obj1->getByType(IPv6::TYPENAME)).size()>1) return NULL;
+    if ((obj1->getByType(IPv6::TYPENAME)).size()>1) return nullptr;
 
-    return (checkComplexMatchForSingleAddress(obj1, obj2)) ? obj1 : NULL;
+    return (checkComplexMatchForSingleAddress(obj1, obj2)) ? obj1 : nullptr;
 }
 
 void* ObjectMatcher::dispatch(Network *obj1, void *_obj2)
@@ -306,10 +306,10 @@ void* ObjectMatcher::dispatch(Network *obj1, void *_obj2)
          * ranges, and some often used ranges trigger that (like
          * "255.255.255.255-255.255.255.255" or "0.0.0.0-0.0.0.0")
          */
-        if (!obj1->getNetmaskPtr()->isHostMask()) return NULL;
+        if (!obj1->getNetmaskPtr()->isHostMask()) return nullptr;
     } else
-        return NULL;
+        return nullptr;
-    return checkComplexMatchForSingleAddress(obj1, obj2) ? obj1 : NULL;
+    return checkComplexMatchForSingleAddress(obj1, obj2) ? obj1 : nullptr;
 }
 
 void* ObjectMatcher::dispatch(NetworkIPv6 *obj1, void *_obj2)
@@ -320,23 +320,23 @@ void* ObjectMatcher::dispatch(NetworkIPv6 *obj1, void *_obj2)
     {
         if (recognize_multicasts && inet_addr->isMulticast() &&
             Firewall::isA(obj2)) return obj1;
-        if (!obj1->getNetmaskPtr()->isHostMask()) return NULL;
+        if (!obj1->getNetmaskPtr()->isHostMask()) return nullptr;
     } else
-        return NULL;
+        return nullptr;
 
-    return checkComplexMatchForSingleAddress(obj1, obj2) ? obj1 : NULL;
+    return checkComplexMatchForSingleAddress(obj1, obj2) ? obj1 : nullptr;
 }
 
 void* ObjectMatcher::dispatch(IPv4 *obj1, void *_obj2)
 {
     FWObject *obj2 = (FWObject*)(_obj2);
-    return checkComplexMatchForSingleAddress(obj1, obj2) ? obj1 : NULL;
+    return checkComplexMatchForSingleAddress(obj1, obj2) ? obj1 : nullptr;
 }
 
 void* ObjectMatcher::dispatch(IPv6 *obj1, void *_obj2)
 {
     FWObject *obj2 = (FWObject*)(_obj2);
-    return checkComplexMatchForSingleAddress(obj1, obj2) ? obj1 : NULL;
+    return checkComplexMatchForSingleAddress(obj1, obj2) ? obj1 : nullptr;
 }
 
 void* ObjectMatcher::dispatch(physAddress *obj1, void *_obj2)
@@ -348,7 +348,7 @@ void* ObjectMatcher::dispatch(physAddress *obj1, void *_obj2)
         physAddress *iface_pa = physAddress::cast(*i);
         if (obj1->getPhysAddress() == iface_pa->getPhysAddress()) return obj1;
     }
-    return NULL;
+    return nullptr;
 }
 
 void* ObjectMatcher::dispatch(AddressRange *obj1, void *_obj2)
@@ -425,14 +425,14 @@ void* ObjectMatcher::dispatch(AddressRange *obj1, void *_obj2)
             if (f_b <= 0  && f_e >= 0) return obj1;
         }
     }
-    return NULL;
+    return nullptr;
 
     bool f_b = checkComplexMatchForSingleAddress(&range_start, obj2);
     bool f_e = checkComplexMatchForSingleAddress(&range_end, obj2);
 
     if (address_range_match_mode == EXACT && f_b && f_e) return obj1;
     if (address_range_match_mode == PARTIAL && (f_b || f_e)) return obj1;
-    return NULL;
+    return nullptr;
 }
 
 /*
@@ -447,7 +447,7 @@ void* ObjectMatcher::dispatch(MultiAddressRunTime *obj1, void *_obj2)
         obj1->getSourceName() == "self" && Firewall::isA(obj2))
         return obj1;
 
-    return NULL;  // never matches in this implementation
+    return nullptr;  // never matches in this implementation
 }
 
 void* ObjectMatcher::dispatch(Host *obj1, void *_obj2)
@@ -464,7 +464,7 @@ void* ObjectMatcher::dispatch(Host *obj1, void *_obj2)
     {
         res &= checkComplexMatchForSingleAddress(Interface::cast(*it), obj2);
     }
-    return res ? obj1 : NULL;
+    return res ? obj1 : nullptr;
 }
 
 void* ObjectMatcher::dispatch(Firewall *obj1, void *_obj2)
@@ -499,7 +499,7 @@ void* ObjectMatcher::dispatch(Cluster *obj1, void *_obj2)
     list<Firewall*>::iterator it;
     for (it=members.begin(); it!=members.end(); ++it)
     {
-        if (dispatch(*it, obj2) != NULL) return obj1;
+        if (dispatch(*it, obj2) != nullptr) return obj1;
     }
 /*
  *  match only if all interfaces of obj1 match obj2

src/libfwbuilder/src/fwbuilder/ObjectMirror.cpp

@@ -48,7 +48,7 @@ using namespace std;
 
 Service* ObjectMirror::getMirroredService(Service *obj)
 {
-    void* res = obj->dispatch(this, (void*)NULL);
+    void* res = obj->dispatch(this, (void*)nullptr);
     return Service::cast((FWObject*)(res));
 }
 

src/libfwbuilder/src/fwbuilder/Policy.cpp

@@ -50,7 +50,7 @@ Policy::~Policy() {}
 Rule* Policy::createRule()
 {
     FWObjectDatabase* db=getRoot();
-    assert(db!=NULL);
+    assert(db!=nullptr);
     return db->createPolicyRule();
 }
 

src/libfwbuilder/src/fwbuilder/Resources.cpp

@@ -59,22 +59,22 @@ using namespace std;
 const string Resources::PLATFORM_RES_DIR_NAME = "platform";
 const string Resources::OS_RES_DIR_NAME = "os";
 
-Resources*  Resources::global_res = NULL;
+Resources*  Resources::global_res = nullptr;
 map<string,Resources*>  Resources::platform_res;
 map<string,Resources*>  Resources::os_res;
 
 
 Resources::Resources()
 {
-    doc=NULL;
+    doc=nullptr;
 }
 
 Resources::Resources(const string &_resF)
 {
-    doc = NULL;
+    doc = nullptr;
     resfile = _resF;
 
-    if (global_res==NULL) 
+    if (global_res==nullptr) 
     {
         global_res = this;
         loadRes(_resF);
@@ -109,7 +109,7 @@ string Resources::getXmlNodeContent(xmlNodePtr node)
 {
     string res;
     char* cptr= (char*)( xmlNodeGetContent(node) );
-    if (cptr!=NULL) 
+    if (cptr!=nullptr) 
     {
         res=cptr;
         FREEXMLBUFF(cptr);
@@ -121,7 +121,7 @@ string Resources::getXmlNodeProp(xmlNodePtr node,string prop)
 {
     string res;
     char* cptr=(char*)( xmlGetProp(node,TOXMLCAST(prop.c_str())));
-    if (cptr!=NULL) 
+    if (cptr!=nullptr) 
     {
         res=cptr;
         FREEXMLBUFF(cptr);
@@ -394,7 +394,7 @@ string Resources::getRuleElementResourceStr(const string &rel,
 
     xmlNodePtr  dptr=Resources::global_res->getXmlNode("FWBuilderResources/RuleElements");
 
-    assert (dptr!=NULL);
+    assert (dptr!=nullptr);
 
     for(c=dptr->xmlChildrenNode; c; c=c->next) 
     {
@@ -463,7 +463,7 @@ string  Resources::getTreeIconFileName(const FWObject *o)
 void    Resources::setDefaultOption(FWObject *o,const string &xml_node)
 {
     xmlNodePtr pn = XMLTools::getXmlNodeByPath(root,xml_node.c_str());
-    if (pn==NULL) return;
+    if (pn==nullptr) return;
 
     string optname=FROMXMLCAST(pn->name);
     string optval =getXmlNodeContent(pn);
@@ -473,7 +473,7 @@ void    Resources::setDefaultOption(FWObject *o,const string &xml_node)
 void    Resources::setDefaultOptionsAll(FWObject *o,const string &xml_node)
 {
     xmlNodePtr pn = XMLTools::getXmlNodeByPath(root , xml_node.c_str() );
-    if (pn==NULL) return;
+    if (pn==nullptr) return;
 
     xmlNodePtr opt;
 
@@ -488,11 +488,11 @@ void    Resources::setDefaultOptionsAll(FWObject *o,const string &xml_node)
 void    Resources::setDefaultTargetOptions(const string &target,Firewall *fw)
 {
     FWOptions *opt=fw->getOptionsObject();
-    Resources *r=NULL;
+    Resources *r=nullptr;
 
     if (platform_res.count(target)!=0)      r=platform_res[target];
-    if (r==NULL && os_res.count(target)!=0) r=os_res[target];
+    if (r==nullptr && os_res.count(target)!=0) r=os_res[target];
-    if (r==NULL)
+    if (r==nullptr)
         throw FWException("Support module for target '"+target+"' is not available");
 
     r->setDefaultOptionsAll(opt,"/FWBuilderResources/Target/options/default");
@@ -502,16 +502,16 @@ void    Resources::setDefaultIfaceOptions(const string &target,Interface *iface)
 {
     FWOptions *opt=iface->getOptionsObject();
     /* if InterfaceOptions object does not yet exist -> create one */
-    if (opt == NULL) {
+    if (opt == nullptr) {
         iface->add(iface->getRoot()->create(InterfaceOptions::TYPENAME));
         opt = iface->getOptionsObject();
     }
 
-    Resources *r=NULL;
+    Resources *r=nullptr;
 
     if (platform_res.count(target)!=0)      r=platform_res[target];
-    if (r==NULL && os_res.count(target)!=0) r=os_res[target];
+    if (r==nullptr && os_res.count(target)!=0) r=os_res[target];
-    if (r==NULL)
+    if (r==nullptr)
         throw FWException("Support module for target '"+target+"' is not available");
 
     r->setDefaultOptionsAll(opt,"/FWBuilderResources/Target/options/interface");
@@ -534,11 +534,11 @@ void    Resources::setDefaultProperties(FWObject *obj)
 string Resources::getTargetCapabilityStr(const string &target,
                                          const string &cap_name)
 {
-    Resources *r=NULL;
+    Resources *r=nullptr;
 
     if (platform_res.count(target)!=0)      r=platform_res[target];
-    if (r==NULL && os_res.count(target)!=0) r=os_res[target];
+    if (r==nullptr && os_res.count(target)!=0) r=os_res[target];
-    if (r==NULL)
+    if (r==nullptr)
         throw FWException("Support module for target '"+target+"' is not available");
 
     return r->getResourceStr("/FWBuilderResources/Target/capabilities/"+cap_name);
@@ -574,11 +574,11 @@ string Resources::getActionEditor(const string &target, const string &action)
 string Resources::getTargetOptionStr(const string &target,
                                      const string &opt_name)
 {
-    Resources *r=NULL;
+    Resources *r=nullptr;
 
     if (platform_res.count(target)!=0)      r=platform_res[target];
-    if (r==NULL && os_res.count(target)!=0) r=os_res[target];
+    if (r==nullptr && os_res.count(target)!=0) r=os_res[target];
-    if (r==NULL)
+    if (r==nullptr)
         throw FWException("Support module for target '"+target+"' is not available");
 
     return r->getResourceStr("/FWBuilderResources/Target/options/"+opt_name);

src/libfwbuilder/src/fwbuilder/Routing.cpp

@@ -50,7 +50,7 @@ Routing::~Routing()  {}
 Rule* Routing::createRule()
 {
     FWObjectDatabase* db=getRoot();
-    assert(db!=NULL);
+    assert(db!=nullptr);
     return db->createRoutingRule();
 }
 

src/libfwbuilder/src/fwbuilder/Rule.cpp

@@ -63,8 +63,8 @@ void Rule::init(FWObjectDatabase*)
 {
 }
 
-FWOptions* Rule::getOptionsObject() const { return NULL; }
+FWOptions* Rule::getOptionsObject() const { return nullptr; }
-RuleSet* Rule::getBranch() { return NULL; }
+RuleSet* Rule::getBranch() { return nullptr; }
 void Rule::setPosition(int n)  { setInt("position", n); }
 int Rule::getPosition() const { return getInt("position"); }
 void Rule::disable() { setBool("disabled",true); }
@@ -117,33 +117,33 @@ PolicyRule::PolicyRule()
 //    setStr("action","Deny");
     setAction(PolicyRule::Deny);
 
-    src_re = NULL;
+    src_re = nullptr;
-    dst_re = NULL;
+    dst_re = nullptr;
-    srv_re = NULL;
+    srv_re = nullptr;
-    itf_re = NULL;
+    itf_re = nullptr;
-    when_re = NULL;
+    when_re = nullptr;
 }
 
 void PolicyRule::init(FWObjectDatabase *root)
 {
     FWObject *re = getFirstByType(RuleElementSrc::TYPENAME);
 
-    if (re == NULL)
+    if (re == nullptr)
     {
 // <!ELEMENT PolicyRule (Src,Dst,Srv?,Itf?,When?,PolicyRuleOptions?)>
-        re = root->createRuleElementSrc();  assert(re!=NULL);
+        re = root->createRuleElementSrc();  assert(re!=nullptr);
         add(re); src_re = RuleElementSrc::cast(re);
 
-        re = root->createRuleElementDst();  assert(re!=NULL);
+        re = root->createRuleElementDst();  assert(re!=nullptr);
         add(re); dst_re = RuleElementDst::cast(re);
 
-        re = root->createRuleElementSrv();  assert(re!=NULL);
+        re = root->createRuleElementSrv();  assert(re!=nullptr);
         add(re); srv_re = RuleElementSrv::cast(re);
 
-        re = root->createRuleElementItf();  assert(re!=NULL);
+        re = root->createRuleElementItf();  assert(re!=nullptr);
         add(re); itf_re = RuleElementItf::cast(re);
 
-        re = root->createRuleElementInterval(); assert(re!=NULL);
+        re = root->createRuleElementInterval(); assert(re!=nullptr);
         add(re); when_re = RuleElementInterval::cast(re);
 
         add( root->createPolicyRuleOptions() );
@@ -158,11 +158,11 @@ FWObject& PolicyRule::shallowDuplicate(const FWObject *x,
     setAction(rx->getAction());
     setLogging(rx->getLogging());
 
-    src_re = NULL;
+    src_re = nullptr;
-    dst_re = NULL;
+    dst_re = nullptr;
-    srv_re = NULL;
+    srv_re = nullptr;
-    itf_re = NULL;
+    itf_re = nullptr;
-    when_re = NULL;
+    when_re = nullptr;
 
     return  Rule::shallowDuplicate(x, preserve_id);
 }
@@ -170,7 +170,7 @@ FWObject& PolicyRule::shallowDuplicate(const FWObject *x,
 bool PolicyRule::cmp(const FWObject *x, bool recursive)
 {
     const PolicyRule *rx = PolicyRule::constcast(x);
-    if (rx == NULL) return false;
+    if (rx == nullptr) return false;
     if (getDirection() != rx->getDirection() ||
         getAction() != rx->getAction() ||
         getLogging() != rx->getLogging()) return false;
@@ -436,26 +436,26 @@ xmlNodePtr PolicyRule::toXML(xmlNodePtr parent)
      *
      <!ELEMENT PolicyRule (Src,Dst,Srv?,Itf?,When?,PolicyRuleOptions?)>
      */
-    if ( (o=getFirstByType( RuleElementSrc::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( RuleElementSrc::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
-    if ( (o=getFirstByType( RuleElementDst::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( RuleElementDst::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
-    if ( (o=getFirstByType( RuleElementSrv::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( RuleElementSrv::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
-    if ( (o=getFirstByType( RuleElementItf::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( RuleElementItf::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
-    if ( (o=getFirstByType( RuleElementInterval::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( RuleElementInterval::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
-    if ( (o=getFirstByType( PolicyRuleOptions::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( PolicyRuleOptions::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
     // there should be no children Policy objects in v3
-    if ( (o=getFirstByType( Policy::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( Policy::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
     return me;
@@ -487,10 +487,10 @@ void PolicyRule::updateNonStandardObjectReferences()
 
 RuleSet* PolicyRule::getBranch()
 {
-    if (getAction() != PolicyRule::Branch) return NULL;
+    if (getAction() != PolicyRule::Branch) return nullptr;
     FWObject *fw = this;
-    while (fw && Firewall::cast(fw) == NULL) fw = fw->getParent();
+    while (fw && Firewall::cast(fw) == nullptr) fw = fw->getParent();
-    assert(fw!=NULL);
+    assert(fw!=nullptr);
     string branch_id = getOptionsObject()->getStr("branch_id");
     if (!branch_id.empty())
     {
@@ -504,7 +504,7 @@ RuleSet* PolicyRule::getBranch()
             return RuleSet::cast(
                 fw->findObjectByName(Policy::TYPENAME, branch_name));
         } else
-            return NULL;
+            return nullptr;
     }
 }
 
@@ -565,7 +565,7 @@ FWObject* PolicyRule::getTagObject()
                 FWObjectDatabase::getIntId(tagobj_id));
         }
     }
-    return NULL;
+    return nullptr;
 }
 
 string PolicyRule::getTagValue()
@@ -654,44 +654,44 @@ NATRule::NATRule() : Rule()
     rule_type = Unknown;
     setAction(NATRule::Translate);
 
-    osrc_re = NULL;
+    osrc_re = nullptr;
-    odst_re = NULL;
+    odst_re = nullptr;
-    osrv_re = NULL;
+    osrv_re = nullptr;
-    tsrc_re = NULL;
+    tsrc_re = nullptr;
-    tdst_re = NULL;
+    tdst_re = nullptr;
-    tsrv_re = NULL;
+    tsrv_re = nullptr;
-    itf_inb_re = NULL;
+    itf_inb_re = nullptr;
-    itf_outb_re = NULL;
+    itf_outb_re = nullptr;
-    when_re = NULL;
+    when_re = nullptr;
 }
 
 void NATRule::init(FWObjectDatabase *root)
 {
     FWObject *re = getFirstByType(RuleElementOSrc::TYPENAME);
-    if (re == NULL)
+    if (re == nullptr)
     {
-        re = root->createRuleElementOSrc();  assert(re!=NULL);
+        re = root->createRuleElementOSrc();  assert(re!=nullptr);
         add(re); osrc_re = RuleElementOSrc::cast(re);
 
-        re = root->createRuleElementODst();  assert(re!=NULL);
+        re = root->createRuleElementODst();  assert(re!=nullptr);
         add(re); odst_re = RuleElementODst::cast(re);
 
-        re = root->createRuleElementOSrv();  assert(re!=NULL);
+        re = root->createRuleElementOSrv();  assert(re!=nullptr);
         add(re); osrv_re = RuleElementOSrv::cast(re);
     
-        re = root->createRuleElementTSrc();  assert(re!=NULL);
+        re = root->createRuleElementTSrc();  assert(re!=nullptr);
         add(re); tsrc_re = RuleElementTSrc::cast(re);
 
-        re = root->createRuleElementTDst();  assert(re!=NULL);
+        re = root->createRuleElementTDst();  assert(re!=nullptr);
         add(re); tdst_re = RuleElementTDst::cast(re);
 
-        re = root->createRuleElementTSrv();  assert(re!=NULL);
+        re = root->createRuleElementTSrv();  assert(re!=nullptr);
         add(re); tsrv_re = RuleElementTSrv::cast(re);
 
-        re = root->createRuleElementItfInb();  assert(re!=NULL);
+        re = root->createRuleElementItfInb();  assert(re!=nullptr);
         add(re); itf_inb_re = RuleElementItfInb::cast(re);
 
-        re = root->createRuleElementItfOutb();  assert(re!=NULL);
+        re = root->createRuleElementItfOutb();  assert(re!=nullptr);
         add(re); itf_outb_re = RuleElementItfOutb::cast(re);
 
         add( root->createNATRuleOptions() );
@@ -876,37 +876,37 @@ xmlNodePtr NATRule::toXML(xmlNodePtr parent)
 
     FWObject *o;
 
-    if ( (o=getFirstByType( RuleElementOSrc::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( RuleElementOSrc::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
-    if ( (o=getFirstByType( RuleElementODst::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( RuleElementODst::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
-    if ( (o=getFirstByType( RuleElementOSrv::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( RuleElementOSrv::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
-    if ( (o=getFirstByType( RuleElementTSrc::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( RuleElementTSrc::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
-    if ( (o=getFirstByType( RuleElementTDst::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( RuleElementTDst::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
-    if ( (o=getFirstByType( RuleElementTSrv::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( RuleElementTSrv::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
-    if ( (o=getFirstByType( RuleElementItfInb::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( RuleElementItfInb::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
-    if ( (o=getFirstByType( RuleElementItfOutb::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( RuleElementItfOutb::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
-    if ( (o=getFirstByType( RuleElementInterval::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( RuleElementInterval::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
-    if ( (o=getFirstByType( NATRuleOptions::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( NATRuleOptions::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
-    if ( (o=getFirstByType( NAT::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( NAT::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
     return me;
@@ -919,9 +919,9 @@ FWOptions* NATRule::getOptionsObject() const
 
 RuleSet* NATRule::getBranch()
 {
-    if (getAction() != NATRule::Branch) return NULL;
+    if (getAction() != NATRule::Branch) return nullptr;
     FWObject *fw = getParent()->getParent();
-    assert(fw!=NULL);
+    assert(fw!=nullptr);
     string branch_id = getOptionsObject()->getStr("branch_id");
     if (!branch_id.empty())
     {
@@ -934,7 +934,7 @@ RuleSet* NATRule::getBranch()
             return RuleSet::cast(fw->findObjectByName(NAT::TYPENAME,
                                                   branch_name));
         else
-            return NULL;
+            return nullptr;
     }
 }
 
@@ -979,18 +979,18 @@ FWObject& NATRule::shallowDuplicate(const FWObject *x,
                                     bool preserve_id)
 {
     const NATRule *rx = NATRule::constcast(x);
-    if (rx!=NULL) rule_type = rx->rule_type;
+    if (rx!=nullptr) rule_type = rx->rule_type;
     setAction(rx->getAction());
 
-    osrc_re = NULL;
+    osrc_re = nullptr;
-    odst_re = NULL;
+    odst_re = nullptr;
-    osrv_re = NULL;
+    osrv_re = nullptr;
-    tsrc_re = NULL;
+    tsrc_re = nullptr;
-    tdst_re = NULL;
+    tdst_re = nullptr;
-    tsrv_re = NULL;
+    tsrv_re = nullptr;
-    itf_inb_re = NULL;
+    itf_inb_re = nullptr;
-    itf_outb_re = NULL;
+    itf_outb_re = nullptr;
-    when_re = NULL;
+    when_re = nullptr;
 
     return  Rule::shallowDuplicate(x, preserve_id);
 }
@@ -998,7 +998,7 @@ FWObject& NATRule::shallowDuplicate(const FWObject *x,
 bool NATRule::cmp(const FWObject *x, bool recursive)
 {
     const NATRule *rx = NATRule::constcast(x);
-    if (rx == NULL) return false;
+    if (rx == nullptr) return false;
     if (getAction() != rx->getAction()) return false;
     return  Rule::cmp(x, recursive);
 }
@@ -1017,11 +1017,11 @@ RoutingRule::RoutingRule() : Rule()
 void RoutingRule::init(FWObjectDatabase *root)
 {
     FWObject *re = getFirstByType(RuleElementRDst::TYPENAME);
-    if (re == NULL)
+    if (re == nullptr)
     {
-        re = root->createRuleElementRDst();  assert(re!=NULL); add(re);
+        re = root->createRuleElementRDst();  assert(re!=nullptr); add(re);
-        re = root->createRuleElementRGtw();  assert(re!=NULL); add(re);
+        re = root->createRuleElementRGtw();  assert(re!=nullptr); add(re);
-        re = root->createRuleElementRItf();  assert(re!=NULL); add(re);
+        re = root->createRuleElementRItf();  assert(re!=nullptr); add(re);
         add( root->createRoutingRuleOptions() );
     }
 }
@@ -1117,19 +1117,19 @@ xmlNodePtr RoutingRule::toXML(xmlNodePtr parent)
 
     FWObject *o;
 
-    if ( (o=getFirstByType( RuleElementRDst::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( RuleElementRDst::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
-    if ( (o=getFirstByType( RuleElementRGtw::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( RuleElementRGtw::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
-    if ( (o=getFirstByType( RuleElementRItf::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( RuleElementRItf::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
-    if ( (o=getFirstByType( RoutingRuleOptions::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( RoutingRuleOptions::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
-    if ( (o=getFirstByType( Routing::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( Routing::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
     return me;
@@ -1143,7 +1143,7 @@ FWOptions* RoutingRule::getOptionsObject() const
 RuleSet*   RoutingRule::getBranch()
 {
     FWObject *fw = getParent()->getParent();
-    assert(fw!=NULL);
+    assert(fw!=nullptr);
     string branch_id = getOptionsObject()->getStr("branch_id");
     if (!branch_id.empty())
     {
@@ -1156,7 +1156,7 @@ RuleSet*   RoutingRule::getBranch()
             return RuleSet::cast(fw->findObjectByName(Routing::TYPENAME,
                                                       branch_name));
         else
-            return NULL;
+            return nullptr;
     }
 }
 
@@ -1185,7 +1185,7 @@ FWObject& RoutingRule::duplicate(const FWObject *x,
 {
     Rule::duplicate(x,preserve_id);
     const RoutingRule *rx = RoutingRule::constcast(x);
-    if (rx!=NULL)
+    if (rx!=nullptr)
     {
         rule_type = rx->rule_type;
         sorted_dst_ids = rx->sorted_dst_ids;

src/libfwbuilder/src/fwbuilder/RuleElement.cpp

@@ -73,7 +73,7 @@ void RuleElement::init(FWObjectDatabase *root)
 */
     int any_id = getAnyElementId();
     FWObject *any_obj = getById(any_id);
-    if (any_obj == NULL)
+    if (any_obj == nullptr)
     {
         any_obj = root->checkIndex( any_id );
         if (any_obj) FWObject::addRef( any_obj );
@@ -117,14 +117,14 @@ FWObject& RuleElement::shallowDuplicate(const FWObject *other,
 
 void RuleElement::addRef(FWObject *obj)
 {
-    FWObject *o=NULL;
+    FWObject *o=nullptr;
     if (isAny())
     {
 	o=(*(begin()));
 	o=(FWReference::cast(o))->getPointer();
     }
     FWObject::addRef(obj);
-    if (o!=NULL) removeRef(o);
+    if (o!=nullptr) removeRef(o);
 }
 
 void RuleElement::removeRef(FWObject *obj)
@@ -185,7 +185,7 @@ xmlNodePtr RuleElementSrc::toXML(xmlNodePtr parent)
 
 bool RuleElementSrc::validateChild(FWObject *o)
 {
-    if (FWObjectReference::cast(o)!=NULL) return true;
+    if (FWObjectReference::cast(o)!=nullptr) return true;
     if ( o->getId() == getAnyElementId()) return true;
     return ObjectGroup::validateChild(o);
 }
@@ -228,7 +228,7 @@ xmlNodePtr RuleElementDst::toXML(xmlNodePtr parent)
 
 bool RuleElementDst::validateChild(FWObject *o)
 {
-    if (FWObjectReference::cast(o)!=NULL) return true;
+    if (FWObjectReference::cast(o)!=nullptr) return true;
     if ( o->getId() == getAnyElementId()) return true;
     return ObjectGroup::validateChild(o);
 }
@@ -271,7 +271,7 @@ xmlNodePtr RuleElementSrv::toXML(xmlNodePtr parent)
 
 bool RuleElementSrv::validateChild(FWObject *o)
 {
-    if (FWServiceReference::cast(o)!=NULL) return true;
+    if (FWServiceReference::cast(o)!=nullptr) return true;
     if ( o->getId() == getAnyElementId()) return true;
     return ServiceGroup::validateChild(o);
 }
@@ -314,13 +314,13 @@ xmlNodePtr RuleElementItf::toXML(xmlNodePtr parent)
 
 bool RuleElementItf::validateChild(FWObject *o)
 {
-    if (FWObjectReference::cast(o)!=NULL) return true;
+    if (FWObjectReference::cast(o)!=nullptr) return true;
 
     if (o->getId() == getAnyElementId()) return true;
 
-    if (Interface::cast(o)!=NULL) return true;
+    if (Interface::cast(o)!=nullptr) return true;
 
-    if (ObjectGroup::cast(o)!=NULL && o->size() > 0)
+    if (ObjectGroup::cast(o)!=nullptr && o->size() > 0)
     {
         bool all_intf = true;
         for (FWObject::iterator i=o->begin(); i!=o->end(); ++i)
@@ -376,7 +376,7 @@ bool RuleElementItf::isDummy() const
  */
 bool RuleElementItf::checkItfChildOfThisFw(FWObject *o)
 {
-    if (Group::cast(o) != NULL)
+    if (Group::cast(o) != nullptr)
     {
         for (FWObject::iterator i=o->begin(); i!=o->end(); ++i)
         {
@@ -390,11 +390,11 @@ bool RuleElementItf::checkItfChildOfThisFw(FWObject *o)
     FWObject* o_tmp2 = getRoot()->findInIndex(this->getId());
 
     FWObject *fw1 = o_tmp;
-    while (fw1 && Firewall::cast(fw1) == NULL) fw1 = fw1->getParent();
+    while (fw1 && Firewall::cast(fw1) == nullptr) fw1 = fw1->getParent();
     FWObject *fw2 = o_tmp2;
-    while (fw2 && Firewall::cast(fw2) == NULL) fw2 = fw2->getParent();
+    while (fw2 && Firewall::cast(fw2) == nullptr) fw2 = fw2->getParent();
 
-    return (fw1 != NULL && fw1 == fw2);
+    return (fw1 != nullptr && fw1 == fw2);
 }
 
 const char *RuleElementItfInb::TYPENAME={"ItfInb"};
@@ -425,7 +425,7 @@ xmlNodePtr RuleElementOSrc::toXML(xmlNodePtr parent)
 
 bool RuleElementOSrc::validateChild(FWObject *o)
 {
-    if (FWObjectReference::cast(o)!=NULL) return true;
+    if (FWObjectReference::cast(o)!=nullptr) return true;
     if ( o->getId() == getAnyElementId()) return true;
     return ObjectGroup::validateChild(o);
 }
@@ -452,7 +452,7 @@ xmlNodePtr RuleElementODst::toXML(xmlNodePtr parent)
 
 bool RuleElementODst::validateChild(FWObject *o)
 {
-    if (FWObjectReference::cast(o)!=NULL) return true;
+    if (FWObjectReference::cast(o)!=nullptr) return true;
     if ( o->getId() == getAnyElementId()) return true;
     return ObjectGroup::validateChild(o);
 }
@@ -479,7 +479,7 @@ xmlNodePtr RuleElementOSrv::toXML(xmlNodePtr parent)
 
 bool RuleElementOSrv::validateChild(FWObject *o)
 {
-    if (FWServiceReference::cast(o)!=NULL) return true;
+    if (FWServiceReference::cast(o)!=nullptr) return true;
     if ( o->getId() == getAnyElementId()) return true;
     return ServiceGroup::validateChild(o);
 }
@@ -508,7 +508,7 @@ xmlNodePtr RuleElementTSrc::toXML(xmlNodePtr parent)
 
 bool RuleElementTSrc::validateChild(FWObject *o)
 {
-    if (FWObjectReference::cast(o)!=NULL) return true;
+    if (FWObjectReference::cast(o)!=nullptr) return true;
     if ( o->getId() == getAnyElementId()) return true;
     return ObjectGroup::validateChild(o);
 }
@@ -535,7 +535,7 @@ xmlNodePtr RuleElementTDst::toXML(xmlNodePtr parent)
 
 bool RuleElementTDst::validateChild(FWObject *o)
 {
-    if (FWObjectReference::cast(o)!=NULL) return true;
+    if (FWObjectReference::cast(o)!=nullptr) return true;
     if ( o->getId() == getAnyElementId()) return true;
     return ObjectGroup::validateChild(o);
 }
@@ -562,13 +562,13 @@ xmlNodePtr RuleElementTSrv::toXML(xmlNodePtr parent)
 
 bool RuleElementTSrv::validateChild(FWObject *o)
 {
-    if (FWServiceReference::cast(o)!=NULL) return true;
+    if (FWServiceReference::cast(o)!=nullptr) return true;
 
     if ( o->getId() == getAnyElementId()) return true;
 
     // TagService is not allowed in translated service
     if (TagService::isA(o)) return false;
-    if (ServiceGroup::cast(o)!=NULL)
+    if (ServiceGroup::cast(o)!=nullptr)
     {
         for (FWObject::iterator i=o->begin(); i!=o->end(); ++i)
         {
@@ -603,9 +603,9 @@ xmlNodePtr RuleElementInterval::toXML(xmlNodePtr parent)
 
 bool RuleElementInterval::validateChild(FWObject *o)
 {
-    if (FWIntervalReference::cast(o)!=NULL)  return true;
+    if (FWIntervalReference::cast(o)!=nullptr)  return true;
     if ( o->getId() == getAnyElementId()) return true;
-    return (Interval::cast(o)!=NULL || IntervalGroup::cast(o)!=NULL);
+    return (Interval::cast(o)!=nullptr || IntervalGroup::cast(o)!=nullptr);
 }
 
 
@@ -630,7 +630,7 @@ xmlNodePtr RuleElementRDst::toXML(xmlNodePtr parent)
 
 bool RuleElementRDst::validateChild(FWObject *o)
 {
-    if (FWObjectReference::cast(o)!=NULL) return true;
+    if (FWObjectReference::cast(o)!=nullptr) return true;
     if ( o->getId() == getAnyElementId()) return true;
     return ObjectGroup::validateChild(o);
 }
@@ -657,7 +657,7 @@ xmlNodePtr RuleElementRGtw::toXML(xmlNodePtr parent)
 
 bool RuleElementRGtw::validateChild(FWObject *o)
 {
-    if (FWObjectReference::cast(o)!=NULL) return true;
+    if (FWObjectReference::cast(o)!=nullptr) return true;
     if( getChildrenCount() > 0 && !isAny()) return false;
     return checkSingleIPAdress(o);
 }
@@ -665,7 +665,7 @@ bool RuleElementRGtw::validateChild(FWObject *o)
 // check if the gateway has only one interface with only one ipv4 adress
 bool RuleElementRGtw::checkSingleIPAdress(FWObject *o)
 {
-    if( Host::cast(o) != NULL)
+    if( Host::cast(o) != nullptr)
     {
         list<FWObject*> obj_list = o->getByType("Interface");
         if( obj_list.size() == 1)
@@ -676,7 +676,7 @@ bool RuleElementRGtw::checkSingleIPAdress(FWObject *o)
                 return true;
             } else return false;
         } else return false;
-    } else if( Interface::cast(o) != NULL)
+    } else if( Interface::cast(o) != nullptr)
     {
         list<FWObject*> obj_list = o->getByType("IPv4");
         if( obj_list.size() == 1)
@@ -686,7 +686,7 @@ bool RuleElementRGtw::checkSingleIPAdress(FWObject *o)
     }
     return ( o->getId() == getAnyElementId() ||
             (FWObject::validateChild(o) && 
-            (IPv4::cast(o)!=NULL || FWObjectReference::cast(o)!=NULL)));
+            (IPv4::cast(o)!=nullptr || FWObjectReference::cast(o)!=nullptr)));
 }
 
 const char *RuleElementRItf::TYPENAME={"RItf"};
@@ -694,12 +694,12 @@ RuleElementRItf::RuleElementRItf()  {}
 
 bool RuleElementRItf::validateChild(FWObject *o)
 {
-    if (FWObjectReference::cast(o)!=NULL) return true;
+    if (FWObjectReference::cast(o)!=nullptr) return true;
 
     if (getChildrenCount() > 0 && !isAny()) return false;
 
     if ( o->getId() == getAnyElementId()) return true;
 
-    return (Interface::cast(o)!=NULL);
+    return (Interface::cast(o)!=nullptr);
 }
 

src/libfwbuilder/src/fwbuilder/RuleSet.cpp

@@ -50,7 +50,7 @@ RuleSet::RuleSet()
 void RuleSet::init(FWObjectDatabase *root)
 {
     FWObject *opt = getFirstByType(RuleSetOptions::TYPENAME);
-    if (opt == NULL) add(root->createRuleSetOptions());
+    if (opt == nullptr) add(root->createRuleSetOptions());
 }
 
 RuleSet::~RuleSet() {}
@@ -67,21 +67,21 @@ void RuleSet::fromXML(xmlNodePtr root)
     // avoid having to increment DTD version number)
 
     n=FROMXMLCAST(xmlGetProp(root, TOXMLCAST("ipv4_rule_set")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         ipv4 = (string(n)=="True" || string(n)=="true");
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root, TOXMLCAST("ipv6_rule_set")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         ipv6 = (string(n)=="True" || string(n)=="true");
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("top_rule_set")));
-    if (n!=NULL)
+    if (n!=nullptr)
     {
         top = (string(n)=="True" || string(n)=="true");
         FREEXMLBUFF(n);
@@ -106,11 +106,11 @@ xmlNodePtr RuleSet::toXML(xmlNodePtr parent)
     // First all rules, skip options
     for(list<FWObject*>::const_iterator j=begin(); j!=end(); ++j)
     {
-        if (FWOptions::cast(*j) == NULL) (*j)->toXML(me);
+        if (FWOptions::cast(*j) == nullptr) (*j)->toXML(me);
     }
 
     FWObject *o;
-    if ( (o=getFirstByType( RuleSetOptions::TYPENAME ))!=NULL )
+    if ( (o=getFirstByType( RuleSetOptions::TYPENAME ))!=nullptr )
 	o->toXML(me);
 
     return me;
@@ -137,7 +137,7 @@ FWObject& RuleSet::shallowDuplicate(const FWObject *o, bool preserve_id)
 bool RuleSet::cmp(const FWObject *obj, bool recursive)
 {
     const RuleSet *other = RuleSet::constcast(obj);
-    if (other == NULL) return false;
+    if (other == nullptr) return false;
     if (ipv4 != other->ipv4 || ipv6 != other->ipv6 || top != other->top)
         return false;
     return FWObject::cmp(obj, recursive);
@@ -171,7 +171,7 @@ Rule* RuleSet::insertRuleBefore(int rule_n)
 {
     Rule *old_rule = getRuleByNum(rule_n);
     Rule *r = createRule();
-    if (old_rule==NULL) add(r);
+    if (old_rule==nullptr) add(r);
     else insert_before(old_rule, r);
     renumberRules();
     return(r);
@@ -183,7 +183,7 @@ Rule* RuleSet::appendRuleAtBottom(bool hidden_rule)
     r->setHidden(hidden_rule);
     int last_rule_position;
     Rule *last_rule = Rule::cast(back());
-    if (last_rule != NULL)
+    if (last_rule != nullptr)
     {
         last_rule_position = last_rule->getPosition() + 1000;
     } else
@@ -198,7 +198,7 @@ Rule* RuleSet::appendRuleAfter(int rule_n)
 {
     Rule *old_rule = getRuleByNum(rule_n);
     Rule *r = createRule();
-    if (old_rule==NULL) add(r);
+    if (old_rule==nullptr) add(r);
     else insert_after(old_rule,r);
     renumberRules();
     return(r);
@@ -211,7 +211,7 @@ bool RuleSet::deleteRule(int rule_n)
 
 bool RuleSet::deleteRule(Rule *r) 
 {
-    if (r!=NULL)
+    if (r!=nullptr)
     {
 	remove(r, true); // and delete the rule if ref counter == 0
 	renumberRules();
@@ -284,12 +284,12 @@ bool RuleSet::moveRule(int src_rule_n, int dst_rule_n)
       FWObject* src =getRuleByNum( src_rule_n );
       FWObject* dst =getRuleByNum( dst_rule_n );
 
-      if (src!=NULL &&  dst!=NULL && src!=dst ) {
+      if (src!=nullptr &&  dst!=nullptr && src!=dst ) {
 
   	FWObject *o;
   	list<FWObject*>::iterator m, m1, m2;
   	for (m=begin(); m!=end(); ++m) {
-  	    if ( (o=(*m))!=NULL ) {
+  	    if ( (o=(*m))!=nullptr ) {
   		if ( o==src ) m1=m;
   		if ( o==dst ) m2=m;
   	    }
@@ -354,14 +354,14 @@ Rule* RuleSet::getRuleByNum(int n)
     for(list<FWObject*>::iterator m=begin(); m!=end(); ++m) 
     {
         FWObject *o;
-	if ( (o=(*m))!=NULL ) 
+	if ( (o=(*m))!=nullptr ) 
         {
 	    Rule *r = Rule::cast(o);
 	    if (r && r->getPosition()==n) 
                 return r;
 	}
     }
-    return NULL;
+    return nullptr;
 }
 
 int RuleSet::getRuleSetSize()
@@ -374,7 +374,7 @@ void RuleSet::assignUniqueRuleIds()
     for (FWObject::iterator it=begin(); it!=end(); ++it)
     {
         Rule *r = Rule::cast(*it);
-        if (r != NULL && r->getUniqueId().empty())
+        if (r != nullptr && r->getUniqueId().empty())
             r->setUniqueId(FWObjectDatabase::getStringId((*it)->getId()) );
 
     }

src/libfwbuilder/src/fwbuilder/ServiceGroup.cpp

@@ -59,14 +59,14 @@ ServiceGroup::~ServiceGroup() {}
 
 bool  ServiceGroup::validateChild(FWObject *o)
 { 
-    if (FWServiceReference::cast(o)!=NULL) return true;
+    if (FWServiceReference::cast(o)!=nullptr) return true;
 
     return (FWObject::validateChild(o) && 
-            Address::cast(o)==NULL &&
+            Address::cast(o)==nullptr &&
-            ObjectGroup::cast(o)==NULL &&
+            ObjectGroup::cast(o)==nullptr &&
-            Interval::cast(o)==NULL &&
+            Interval::cast(o)==nullptr &&
-            FWObjectReference::cast(o)==NULL &&
+            FWObjectReference::cast(o)==nullptr &&
-            RuleSet::cast(o)==NULL);
+            RuleSet::cast(o)==nullptr);
 }
 
 FWReference* ServiceGroup::createRef()

src/libfwbuilder/src/fwbuilder/TCPService.cpp

@@ -81,7 +81,7 @@ void TCPService::fromXML(xmlNodePtr root)
     const char *n;
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("established")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         setStr("established", n);
         FREEXMLBUFF(n);
@@ -91,7 +91,7 @@ void TCPService::fromXML(xmlNodePtr root)
     for (i=flags.begin(); i!=flags.end(); ++i)
     {
         n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST( (i->second).c_str() )));
-        if(n!=NULL)
+        if(n!=nullptr)
         {
             setStr( i->second , n);
             FREEXMLBUFF(n);
@@ -101,7 +101,7 @@ void TCPService::fromXML(xmlNodePtr root)
     for (i=flags_masks.begin(); i!=flags_masks.end(); ++i)
     {
         n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST( (i->second).c_str() )));
-        if(n!=NULL)
+        if(n!=nullptr)
         {
             setStr( i->second , n);
             FREEXMLBUFF(n);

src/libfwbuilder/src/fwbuilder/TCPUDPService.cpp

@@ -56,28 +56,28 @@ void TCPUDPService::fromXML(xmlNodePtr root)
     const char *n;
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("src_range_start")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         src_range_start = atol(n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("src_range_end")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         src_range_end = atol(n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("dst_range_start")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         dst_range_start = atol(n);
         FREEXMLBUFF(n);
     }
 
     n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("dst_range_end")));
-    if(n!=NULL)
+    if(n!=nullptr)
     {
         dst_range_end = atol(n);
         FREEXMLBUFF(n);
@@ -121,7 +121,7 @@ FWObject& TCPUDPService::shallowDuplicate(const FWObject *obj,
 bool TCPUDPService::cmp(const FWObject *obj, bool recursive)
 {
     const TCPUDPService *other = TCPUDPService::constcast(obj);
-    if (other == NULL) return false;
+    if (other == nullptr) return false;
     if (src_range_start != other->src_range_start ||
         src_range_end != other->src_range_end ||
         dst_range_start != other->dst_range_start ||

src/libfwbuilder/src/fwbuilder/TagService.cpp

@@ -62,7 +62,7 @@ void TagService::fromXML(xmlNodePtr root)
     FWObject::fromXML(root);
 
     const char *n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("tagcode")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
     setStr("tagcode", n);
     FREEXMLBUFF(n);
     

src/libfwbuilder/src/fwbuilder/ThreadTools.cpp

@@ -68,7 +68,7 @@ void Mutex::unlock() const
 
 Cond::Cond()
 {
-    pthread_cond_init( &cond, NULL );
+    pthread_cond_init( &cond, nullptr );
 }
 
 Cond::~Cond()

src/libfwbuilder/src/fwbuilder/Tools.cpp

@@ -68,7 +68,7 @@ char *cxx_strdup(const string &x)
 char *cxx_strdup(const char *x)
 {
     if(!x)
-        return (char*)NULL;
+        return (char*)nullptr;
 
     char *res=new char[strlen(x)+1];
     strcpy(res,x);
@@ -130,10 +130,10 @@ list<string> getDirList(const std::string &dir,
 
 #ifndef _WIN32
     DIR *d=opendir(dir.c_str());
-    if (d!=NULL)
+    if (d!=nullptr)
     {
         struct dirent *de;
-        while ( (de=readdir(d))!=NULL ) 
+        while ( (de=readdir(d))!=nullptr ) 
         {
             if (strcmp(de->d_name,".")==SAME || strcmp(de->d_name,"..")==SAME)
                 continue;

src/libfwbuilder/src/fwbuilder/UserService.cpp

@@ -76,7 +76,7 @@ xmlNodePtr UserService::toXML(xmlNodePtr parent)
 
 bool UserService::cmp(const FWObject *obj, bool recursive)
 {
-    if (UserService::constcast(obj)==NULL) return false;
+    if (UserService::constcast(obj)==nullptr) return false;
     if (!FWObject::cmp(obj, recursive)) return false;
     
     const UserService *user_serv = UserService::constcast(obj);

src/libfwbuilder/src/fwbuilder/XMLTools.cpp

@@ -98,7 +98,7 @@ static void xslt_error_handler(void *ctx, const char *msg, ...)
     char buf[4096];
     va_list args;
 
-    assert(ctx!=NULL);
+    assert(ctx!=nullptr);
     va_start(args, msg);
 
 #ifdef _WIN32
@@ -125,7 +125,7 @@ xmlNodePtr XMLTools::getXmlChildNode(xmlNodePtr r,const char *child_name)
 	if (strcmp(child_name,FROMXMLCAST(cur->name))==SAME)
 	    return cur;
     }
-    return NULL;
+    return nullptr;
 }
 
 
@@ -140,7 +140,7 @@ xmlNodePtr XMLTools::getXmlNodeByPath(xmlNodePtr r, const char *path)
     char *path_copy;
     xmlNodePtr  cur, res;
 
-    res=NULL;
+    res=nullptr;
     
     path_copy= cxx_strdup( path );
 
@@ -155,7 +155,7 @@ xmlNodePtr XMLTools::getXmlNodeByPath(xmlNodePtr r, const char *path)
     }
 
     cptr=strchr(s1,'/');
-    if (cptr!=NULL) {
+    if (cptr!=nullptr) {
 	*cptr='\0';
 	cptr++;
     }
@@ -177,14 +177,14 @@ xmlNodePtr XMLTools::getXmlNodeByPath(xmlNodePtr r, const char *path)
 }
 
 
-xmlExternalEntityLoader XMLTools::defaultLoader = NULL;
+xmlExternalEntityLoader XMLTools::defaultLoader = nullptr;
 
 /** 
  * This is global variable used in 'fwbExternalEntityLoader'
  * parser callback. It is protected by 'xml_parser_mutex'.
  */
 
-static char* current_template_dir=NULL;
+static char* current_template_dir=nullptr;
 
 xmlParserInputPtr fwbExternalEntityLoader(const char *URL, 
                                           const char *ID,
@@ -213,7 +213,7 @@ xmlParserInputPtr fwbExternalEntityLoader(const char *URL,
     else if(XMLTools::defaultLoader)
         return XMLTools::defaultLoader(URL, ID, ctxt);
     else
-        return NULL;
+        return nullptr;
 }
 
 void XMLTools::initXMLTools()
@@ -249,7 +249,7 @@ string XMLTools::readFile(const std::string &rfile)
     }
 
     gzFile gzf = gzopen(rfile.c_str(), "rb9");
-    if (gzf == NULL) throw FWException("Could not read file "+rfile);
+    if (gzf == nullptr) throw FWException("Could not read file "+rfile);
 
     int chunk_size = 65536;
     char *chunk = (char*)malloc(chunk_size);
@@ -284,7 +284,7 @@ xmlDocPtr XMLTools::parseFile(const string &file_name,
 {
     xml_parser_mutex.lock();
 
-    if (current_template_dir!=NULL) delete[] current_template_dir;
+    if (current_template_dir!=nullptr) delete[] current_template_dir;
     current_template_dir = cxx_strdup(template_dir.c_str());
     
     xmlDoValidityCheckingDefaultValue = use_dtd ? 1 : 0;
@@ -296,7 +296,7 @@ xmlDocPtr XMLTools::parseFile(const string &file_name,
 
     xmlDocPtr doc = xmlParseMemory(buffer.c_str(), buffer.length());
 
-    xmlSetGenericErrorFunc(NULL, NULL);
+    xmlSetGenericErrorFunc(nullptr, nullptr);
 
     xml_parser_mutex.unlock();
     if (!doc || errors.length())
@@ -422,7 +422,7 @@ in the same directory with extension '.bak'. Are you sure you want to open it?";
                 throw;
         }
     } 
-    assert(doc!=NULL);
+    assert(doc!=nullptr);
     xmlFreeDoc(doc);
     //xmlCleanupParser();
 
@@ -443,7 +443,7 @@ void XMLTools::setDTD(xmlDocPtr doc,
   
 
     xmlCreateIntSubset(doc, STRTOXMLCAST(type_name), 
-                       NULL, 
+                       nullptr, 
                        STRTOXMLCAST(dtd_file)
     );
     
@@ -477,12 +477,12 @@ void XMLTools::setDTD(xmlDocPtr doc,
         if(xmlValidateDocument(&vctxt, doc)!=1)
             throw FWException(string("DTD validation stage 2 failed with following errors:\n")+errors);
 */
-        xmlSetGenericErrorFunc (NULL, NULL);
+        xmlSetGenericErrorFunc (nullptr, nullptr);
         xml_parser_mutex.unlock();    
 
     } catch(...)
     {
-        xmlSetGenericErrorFunc (NULL, NULL);
+        xmlSetGenericErrorFunc (nullptr, nullptr);
         xml_parser_mutex.unlock();    
         throw;
     }
@@ -527,7 +527,7 @@ void XMLTools::transformFileToFile(const string &src_file,
 				   const string &dst_file)
 {
     string xslt_errors;
-    xsltStylesheetPtr ss = NULL;
+    xsltStylesheetPtr ss = nullptr;
     xmlDocPtr doc, res;
 
 
@@ -547,12 +547,12 @@ void XMLTools::transformFileToFile(const string &src_file,
 
     if(!ss)
     {
-        xsltSetGenericErrorFunc(NULL, NULL);
+        xsltSetGenericErrorFunc(nullptr, nullptr);
-        xmlSetGenericErrorFunc (NULL, NULL);
+        xmlSetGenericErrorFunc (nullptr, nullptr);
 
         // Following line is workaround for bug #73088 in Gnome
         // bugzilla. To be removed than it will be fixed.
-        xsltSetGenericDebugFunc (NULL, NULL);
+        xsltSetGenericDebugFunc (nullptr, nullptr);
         xml_parser_mutex.unlock();    
         xslt_processor_mutex.unlock();
         throw FWException("File conversion error: Error loading stylesheet: " + 
@@ -568,12 +568,12 @@ void XMLTools::transformFileToFile(const string &src_file,
     res = xsltApplyStylesheet(ss, doc, params);
     xsltSaveResultToFilename(dst_file.c_str(), res, ss, 0);
 
-    xsltSetGenericErrorFunc(NULL, NULL);
+    xsltSetGenericErrorFunc(nullptr, nullptr);
-    xmlSetGenericErrorFunc (NULL, NULL);
+    xmlSetGenericErrorFunc (nullptr, nullptr);
 
     // Following line is workaround for bug #73088 in Gnome
     // bugzilla. To be removed than it will be fixed.
-    xsltSetGenericDebugFunc (NULL, NULL);
+    xsltSetGenericDebugFunc (nullptr, nullptr);
 
     xml_parser_mutex.unlock();    
     xslt_processor_mutex.unlock();    
@@ -628,12 +628,12 @@ void XMLTools::transformDocumentToFile(xmlDocPtr doc,
 
     if (!ss)
     {
-        xsltSetGenericErrorFunc(NULL, NULL);
+        xsltSetGenericErrorFunc(nullptr, nullptr);
-        xmlSetGenericErrorFunc (NULL, NULL);
+        xmlSetGenericErrorFunc (nullptr, nullptr);
 
         // Following line is workaround for bug #73088 in Gnome
         // bugzilla. To be removed than it will be fixed.
-        xsltSetGenericDebugFunc (NULL, NULL);
+        xsltSetGenericDebugFunc (nullptr, nullptr);
         xml_parser_mutex.unlock();    
         xslt_processor_mutex.unlock();    
         throw FWException("File conversion error: Error loading stylesheet: " + 
@@ -645,12 +645,12 @@ void XMLTools::transformDocumentToFile(xmlDocPtr doc,
     
     xmlDocPtr res = xsltApplyStylesheet(ss, doc, params);
 
-    xsltSetGenericErrorFunc(NULL, NULL);
+    xsltSetGenericErrorFunc(nullptr, nullptr);
-    xmlSetGenericErrorFunc (NULL, NULL);
+    xmlSetGenericErrorFunc (nullptr, nullptr);
 
     // Following line is workaround for bug #73088 in Gnome
     // bugzilla. To be removed than it will be fixed.
-    xsltSetGenericDebugFunc (NULL, NULL);
+    xsltSetGenericDebugFunc (nullptr, nullptr);
 
     xml_parser_mutex.unlock();    
     xslt_processor_mutex.unlock();    
@@ -700,11 +700,11 @@ xmlDocPtr XMLTools::transformDocument(xmlDocPtr doc,
 
     if (!ss)
     {
-        xsltSetGenericErrorFunc(NULL, NULL);
+        xsltSetGenericErrorFunc(nullptr, nullptr);
-        xmlSetGenericErrorFunc (NULL, NULL);
+        xmlSetGenericErrorFunc (nullptr, nullptr);
         // Following line is workaround for bug #73088 in Gnome
         // bugzilla. To be removed than it will be fixed.
-        xsltSetGenericDebugFunc (NULL, NULL);
+        xsltSetGenericDebugFunc (nullptr, nullptr);
     
         xml_parser_mutex.unlock();    
         xslt_processor_mutex.unlock();    
@@ -716,11 +716,11 @@ xmlDocPtr XMLTools::transformDocument(xmlDocPtr doc,
     xmlDocPtr res = xsltApplyStylesheet(ss, doc, params);
 
     xsltFreeStylesheet(ss);
-    xsltSetGenericErrorFunc(NULL, NULL);
+    xsltSetGenericErrorFunc(nullptr, nullptr);
-    xmlSetGenericErrorFunc (NULL, NULL);
+    xmlSetGenericErrorFunc (nullptr, nullptr);
     // Following line is workaround for bug #73088 in Gnome
     // bugzilla. To be removed than it will be fixed.
-    xsltSetGenericDebugFunc (NULL, NULL);
+    xsltSetGenericDebugFunc (nullptr, nullptr);
     
     xml_parser_mutex.unlock();    
     xslt_processor_mutex.unlock();    
@@ -741,7 +741,7 @@ xmlDocPtr XMLTools::convert(xmlDocPtr doc,
                             const string &template_dir,
                             const string &current_version)
 {
-    xmlDocPtr  res = NULL;
+    xmlDocPtr  res = nullptr;
     
     xmlNodePtr root = xmlDocGetRootElement(doc);
     if (!root || !root->name || type_name!=FROMXMLCAST(root->name))
@@ -753,7 +753,7 @@ xmlDocPtr XMLTools::convert(xmlDocPtr doc,
 
     string vers;
     const char *v = FROMXMLCAST(xmlGetProp(root,TOXMLCAST("version")));
-    if (v==NULL)
+    if (v==nullptr)
     {
         // no version.
         v="0.8.7"; // at this version attribute has been introduced
@@ -817,7 +817,7 @@ xmlDocPtr XMLTools::convert(xmlDocPtr doc,
         
         try
         {
-            res = transformDocument(doc, fname, NULL);
+            res = transformDocument(doc, fname, nullptr);
         } catch(FWException &ex)
         {
             ex.getProperties()["failed_transformation"]=fname;
@@ -839,7 +839,7 @@ xmlDocPtr XMLTools::convert(xmlDocPtr doc,
         }
 
         v = FROMXMLCAST(xmlGetProp(root, TOXMLCAST("version")));
-        if (v==NULL)
+        if (v==nullptr)
         {
             xmlFreeDoc(doc);
             //xmlCleanupParser();

src/libfwbuilder/src/fwbuilder/dns.cpp

@@ -58,14 +58,14 @@ using namespace libfwbuilder;
 
 #undef DEBUG_DNS
 
-Mutex *DNS::gethostbyname_mutex = NULL;
+Mutex *DNS::gethostbyname_mutex = nullptr;
-Mutex *DNS::gethostbyaddr_mutex = NULL;
+Mutex *DNS::gethostbyaddr_mutex = nullptr;
 
 // use this function for delayed initialization
 void DNS::init()
 {
-    if (gethostbyname_mutex==NULL) gethostbyname_mutex = new Mutex();
+    if (gethostbyname_mutex==nullptr) gethostbyname_mutex = new Mutex();
-    if (gethostbyaddr_mutex==NULL) gethostbyaddr_mutex = new Mutex();
+    if (gethostbyaddr_mutex==nullptr) gethostbyaddr_mutex = new Mutex();
 }
 
 /*
@@ -94,7 +94,7 @@ HostEnt DNS::getHostByAddr(const InetAddr &addr, int type)
                            type);
     }
 
-    if(hp==NULL)
+    if(hp==nullptr)
     {
         gethostbyaddr_mutex->unlock();
         free(tmphstbuf);
@@ -118,14 +118,14 @@ list<InetAddr> DNS::getHostByName(const string &name, int type)
 
     list<InetAddr> v;
     
-    struct addrinfo *aiList = NULL;
+    struct addrinfo *aiList = nullptr;
     int retVal;
 
 #ifdef DEBUG_DNS
     cerr << "DNS::getHostByName " << name << "  type=" << type << endl;
 #endif
 
-    if ((retVal = getaddrinfo(name.c_str(), NULL, NULL, &aiList)) != 0)
+    if ((retVal = getaddrinfo(name.c_str(), nullptr, nullptr, &aiList)) != 0)
     {
         std::ostringstream strerr;
         strerr << "Host or network '" + name + "' not found; last error: ";
@@ -140,7 +140,7 @@ list<InetAddr> DNS::getHostByName(const string &name, int type)
     struct addrinfo *ai;
     try
     {
-        for (ai=aiList; ai!=NULL; ai=ai->ai_next)
+        for (ai=aiList; ai!=nullptr; ai=ai->ai_next)
         {
 #ifdef DEBUG_DNS
             cerr << "DNS::getHostByName " << name

src/libfwbuilder/src/fwbuilder/physAddress.cpp

@@ -50,7 +50,7 @@ void physAddress::fromXML(xmlNodePtr root)
     FWObject::fromXML(root);
 
     const char* n=FROMXMLCAST(xmlGetProp(root,TOXMLCAST("address")));
-    assert(n!=NULL);
+    assert(n!=nullptr);
     setStr("address", n);
     FREEXMLBUFF(n);
 }

src/libfwbuilder/src/fwcompiler/Compiler.cpp

@@ -82,7 +82,7 @@ void Compiler::epilog()
 
 void Compiler::abort(const string &errstr)
 {
-    BaseCompiler::abort(fw, source_ruleset, NULL, errstr);
+    BaseCompiler::abort(fw, source_ruleset, nullptr, errstr);
 }
 
 void Compiler::abort(FWObject *rule, const string &errstr)
@@ -92,7 +92,7 @@ void Compiler::abort(FWObject *rule, const string &errstr)
 
 void Compiler::error(const string &errstr)
 {
-    BaseCompiler::error(fw, source_ruleset, NULL, errstr);
+    BaseCompiler::error(fw, source_ruleset, nullptr, errstr);
 }
 
 void Compiler::error(FWObject *rule, const string &errstr)
@@ -102,7 +102,7 @@ void Compiler::error(FWObject *rule, const string &errstr)
 
 void Compiler::warning(const string &errstr)
 {
-    BaseCompiler::warning(fw, source_ruleset, NULL, errstr);
+    BaseCompiler::warning(fw, source_ruleset, nullptr, errstr);
 }
 
 void Compiler::warning(FWObject *rule, const string &errstr)
@@ -136,9 +136,9 @@ void Compiler::_init(FWObjectDatabase *_db, Firewall *_fw)
 { 
     initialized = false;
     _cntr_ = 1; 
-    group_registry = NULL;
+    group_registry = nullptr;
 
-    temp_ruleset = NULL; 
+    temp_ruleset = nullptr; 
 
     debug = 0;
     debug_rule = -1;
@@ -148,13 +148,13 @@ void Compiler::_init(FWObjectDatabase *_db, Firewall *_fw)
     single_rule_ruleset_name = "";
     single_rule_position = -1;
 
-    dbcopy = NULL;
+    dbcopy = nullptr;
-    persistent_objects = NULL;
+    persistent_objects = nullptr;
-    fw = NULL;
+    fw = nullptr;
-    fwopt = NULL;
+    fwopt = nullptr;
     fw_id = -1;
 
-    if (_db != NULL && _fw != NULL)
+    if (_db != nullptr && _fw != nullptr)
     {
         assert(_fw->getRoot() == _db);
 
@@ -174,40 +174,40 @@ void Compiler::_init(FWObjectDatabase *_db, Firewall *_fw)
 
 Compiler::Compiler(FWObjectDatabase *_db, Firewall *fw, bool ipv6_policy)
 {
-    source_ruleset = NULL;
+    source_ruleset = nullptr;
     ruleSetName = "";
-    osconfigurator = NULL;
+    osconfigurator = nullptr;
     countIPv6Rules = 0;
     ipv6 = ipv6_policy;
-    persistent_objects = NULL;
+    persistent_objects = nullptr;
     _init(_db, fw);
 }
 
 Compiler::Compiler(FWObjectDatabase *_db, Firewall *fw, bool ipv6_policy,
 		   OSConfigurator *_oscnf)
 {
-    source_ruleset = NULL;
+    source_ruleset = nullptr;
     ruleSetName = "";
     osconfigurator = _oscnf;
     countIPv6Rules = 0;
     ipv6 = ipv6_policy;
-    persistent_objects = NULL;
+    persistent_objects = nullptr;
     _init(_db, fw);
 }
 
 // this constructor is used by class Preprocessor, it does not call _init
 Compiler::Compiler(FWObjectDatabase*, bool ipv6_policy)
 {
-    source_ruleset = NULL;
+    source_ruleset = nullptr;
     ruleSetName = "";
-    osconfigurator = NULL;
+    osconfigurator = nullptr;
     countIPv6Rules = 0;
     ipv6 = ipv6_policy;
     initialized = false;
     _cntr_ = 1; 
-    persistent_objects = NULL;
+    persistent_objects = nullptr;
-    fw = NULL; 
+    fw = nullptr; 
-    temp_ruleset = NULL; 
+    temp_ruleset = nullptr; 
     debug = 0;
     debug_rule = -1;
     rule_debug_on = false;
@@ -218,7 +218,7 @@ Compiler::Compiler(FWObjectDatabase*, bool ipv6_policy)
 Compiler::~Compiler()
 {
     deleteRuleProcessors();
-    dbcopy = NULL;
+    dbcopy = nullptr;
 }
 
 void Compiler::setPersistentObjects(Library* po)
@@ -291,8 +291,8 @@ void Compiler::_expand_group_recursive(FWObject *o, list<FWObject*> &ol)
  */
     MultiAddress *adt = MultiAddress::cast(o);
 
-    if ((Group::cast(o)!=NULL && adt==NULL) ||
+    if ((Group::cast(o)!=nullptr && adt==nullptr) ||
-        (adt!=NULL && adt->isCompileTime()))
+        (adt!=nullptr && adt->isCompileTime()))
     {
 	for (FWObject::iterator i2=o->begin(); i2!=o->end(); ++i2)
         {
@@ -406,7 +406,7 @@ void Compiler::_expand_addr_recursive(Rule *rule, FWObject *s,
         }
 
         if (o->getId() == FWObjectDatabase::ANY_ADDRESS_ID ||
-            MultiAddress::cast(o)!=NULL ||
+            MultiAddress::cast(o)!=nullptr ||
             Interface::cast(o) ||
             physAddress::cast(o))
         {
@@ -417,7 +417,7 @@ void Compiler::_expand_addr_recursive(Rule *rule, FWObject *s,
  
     if (addrlist.empty())
     {
-        if (RuleElement::cast(s)==NULL) ol.push_back(s);
+        if (RuleElement::cast(s)==nullptr) ol.push_back(s);
     }
     else
     {
@@ -480,15 +480,15 @@ void Compiler::_expand_interface(Rule *rule,
     FWObject *p = Host::getParentHost(iface);
     //FWObject *p = iface->getParentHost();
     Host *hp = Host::cast(p);
-    if (hp==NULL) return;  // something is very broken
+    if (hp==nullptr) return;  // something is very broken
     FWOptions *hopt = hp->getOptionsObject();
-    bool use_mac = (hopt!=NULL && hopt->getBool("use_mac_addr_filter")); 
+    bool use_mac = (hopt!=nullptr && hopt->getBool("use_mac_addr_filter")); 
 
     for (FWObject::iterator i1=iface->begin(); i1!=iface->end(); ++i1) 
     {
 	FWObject *o= *i1;
 
-        if (physAddress::cast(o)!=NULL)
+        if (physAddress::cast(o)!=nullptr)
         {
             if (use_mac) ol.push_back(o);
             continue;
@@ -504,7 +504,7 @@ void Compiler::_expand_interface(Rule *rule,
         }
 
         if ( ! iface->isUnnumbered() &&
-             Address::cast(o)!=NULL &&
+             Address::cast(o)!=nullptr &&
              MatchesAddressFamily(o)) ol.push_back(o);
     }
 
@@ -540,7 +540,7 @@ bool compare_addresses(FWObject *o1, FWObject *o2)
 {
     Address *a1 = Address::cast(o1);
     Address *a2 = Address::cast(o2);
-    if (a1 == NULL || a2 == NULL)
+    if (a1 == nullptr || a2 == nullptr)
     {
         // one or both could be MultiAddress objects (e.g. DNSName)
         return o1->getName() < o2->getName();
@@ -548,8 +548,8 @@ bool compare_addresses(FWObject *o1, FWObject *o2)
 
     const InetAddr *addr1 = a1->getAddressPtr();
     const InetAddr *addr2 = a2->getAddressPtr();
-    if (addr1 == NULL) return true;
+    if (addr1 == nullptr) return true;
-    if (addr2 == NULL) return false;
+    if (addr2 == nullptr) return false;
     return *addr1 < *addr2;
 }
 
@@ -594,7 +594,7 @@ void Compiler::_expandAddressRanges(Rule *rule, FWObject *re)
     for (FWObject::iterator i1=re->begin(); i1!=re->end(); ++i1) 
     {
         FWObject *o = FWReference::getObject(*i1);
-	assert(o!=NULL);
+	assert(o!=nullptr);
 
         // if this is address range, check if it matches current address
         // family. If it is not address range, put it back into the rule element
@@ -628,7 +628,7 @@ void Compiler::_expandAddressRanges(Rule *rule, FWObject *re)
                     cl.push_back(h);
 
                     // see GroupRegistry::registerGroupObject()
-                    if (group_registry != NULL)
+                    if (group_registry != nullptr)
                     {
                         group_registry->setGroupRegistryKey(
                             h, group_registry->getGroupRegistryKey(aro));
@@ -659,7 +659,7 @@ void Compiler::debugRule()
          i!=source_ruleset->end(); i++)
     {
 	Rule *rule = Rule::cast( *i );
-        if (rule == NULL) continue;
+        if (rule == nullptr) continue;
         if (rule_debug_on && rule->getPosition()==debug_rule )
         {
             info(debugPrintRule(rule));
@@ -687,7 +687,7 @@ string Compiler::debugPrintRule(libfwbuilder::Rule *rule)
 void Compiler::add(BasicRuleProcessor* rp) 
 { 
     rule_processors.push_back(rp); 
-    if (rule_debug_on && dynamic_cast<simplePrintProgress*>(rp)==NULL) 
+    if (rule_debug_on && dynamic_cast<simplePrintProgress*>(rp)==nullptr) 
         rule_processors.push_back(new Debug());
 }
 
@@ -728,14 +728,14 @@ Compiler::Begin::Begin(const std::string &n) : BasicRuleProcessor(n)
 
 bool Compiler::Begin::processNext()
 {
-    assert(compiler!=NULL);
+    assert(compiler!=nullptr);
     if (!init)
     {
         for (FWObject::iterator i=compiler->source_ruleset->begin();
              i!=compiler->source_ruleset->end(); ++i)
         {
             Rule *rule = Rule::cast(*i);
-            if (rule == NULL) continue;
+            if (rule == nullptr) continue;
             if (rule->isDisabled()) continue;
             if (rule->isDummyRule()) {
                 compiler->warning(rule, "Rule contains dummy object and is not parsed.");
@@ -759,8 +759,8 @@ bool Compiler::Begin::processNext()
 
 bool Compiler::printTotalNumberOfRules::processNext()
 {
-    assert(compiler!=NULL);
+    assert(compiler!=nullptr);
-    assert(prev_processor!=NULL);
+    assert(prev_processor!=nullptr);
 
     slurp();
     if (tmp_queue.size()==0) return false;
@@ -775,8 +775,8 @@ bool Compiler::printTotalNumberOfRules::processNext()
 
 bool Compiler::createNewCompilerPass::processNext()
 {
-    assert(compiler!=NULL);
+    assert(compiler!=nullptr);
-    assert(prev_processor!=NULL);
+    assert(prev_processor!=nullptr);
 
     slurp();
     if (tmp_queue.size()==0) return false;
@@ -786,8 +786,8 @@ bool Compiler::createNewCompilerPass::processNext()
 
 bool Compiler::Debug::processNext()
 {
-    assert(compiler!=NULL);
+    assert(compiler!=nullptr);
-    assert(prev_processor!=NULL);
+    assert(prev_processor!=nullptr);
 
     slurp();
     if (tmp_queue.size()==0) return false;
@@ -813,10 +813,10 @@ bool Compiler::Debug::processNext()
 
 bool Compiler::singleRuleFilter::processNext()
 {
-    assert(compiler!=NULL);
+    assert(compiler!=nullptr);
-    assert(prev_processor!=NULL);
+    assert(prev_processor!=nullptr);
 
-    Rule *rule = prev_processor->getNextRule(); if (rule==NULL) return false;
+    Rule *rule = prev_processor->getNextRule(); if (rule==nullptr) return false;
 
     if (!compiler->single_rule_mode)
     {
@@ -833,7 +833,7 @@ bool Compiler::singleRuleFilter::processNext()
 
 bool Compiler::simplePrintProgress::processNext()
 {
-    Rule *rule=prev_processor->getNextRule(); if (rule==NULL) return false;
+    Rule *rule=prev_processor->getNextRule(); if (rule==nullptr) return false;
 
     std::string rl=rule->getLabel();
     if (rl!=current_rule_label) {
@@ -856,7 +856,7 @@ bool Compiler::simplePrintProgress::processNext()
  */
 bool Compiler::splitIfRuleElementMatchesFW::processNext()
 {
-    Rule *rule=prev_processor->getNextRule(); if (rule==NULL) return false;
+    Rule *rule=prev_processor->getNextRule(); if (rule==nullptr) return false;
 
     RuleElement *re = RuleElement::cast(rule->getFirstByType(re_type));
     int nre = re->size();
@@ -867,7 +867,7 @@ bool Compiler::splitIfRuleElementMatchesFW::processNext()
     {
         FWObject *obj = FWReference::getObject(*i1);
         Address *a = Address::cast(obj);
-        assert(a!=NULL);
+        assert(a!=nullptr);
 
         if (a->getId() == compiler->fw->getId() ||
             a->getInt("parent_cluster_id") == compiler->fw->getId() ||
@@ -911,7 +911,7 @@ bool Compiler::splitIfRuleElementMatchesFW::processNext()
 bool Compiler::ReplaceFirewallObjectWithSelfInRE::processNext()
 {
     Rule *rule = prev_processor->getNextRule();
-    if (rule==NULL) return false;
+    if (rule==nullptr) return false;
     RuleElement *re = RuleElement::cast(rule->getFirstByType(re_type));
 
     for (list<FWObject*>::iterator i1=re->begin(); i1!=re->end(); ++i1)
@@ -922,7 +922,7 @@ bool Compiler::ReplaceFirewallObjectWithSelfInRE::processNext()
             DNSName *self = DNSName::cast(
                 compiler->persistent_objects->findObjectByName(
                     DNSName::TYPENAME, "self"));
-            if (self == NULL)
+            if (self == nullptr)
             {
                 self = compiler->dbcopy->createDNSName();
                 self->setName("self");
@@ -944,16 +944,16 @@ bool Compiler::ReplaceFirewallObjectWithSelfInRE::processNext()
 bool Compiler::RegisterGroupsAndTablesInRE::processNext()
 {
     Rule *rule = prev_processor->getNextRule();
-    if (rule==NULL) return false;
+    if (rule==nullptr) return false;
 
-    if (compiler->group_registry != NULL)
+    if (compiler->group_registry != nullptr)
     {
         RuleElement *re = RuleElement::cast(rule->getFirstByType(re_type));
 
         for (FWObject::iterator i=re->begin(); i!=re->end(); i++)
         {
             FWObject *obj = FWReference::getObject(*i);
-            if (ObjectGroup::cast(obj)!=NULL && obj->size() > 0)
+            if (ObjectGroup::cast(obj)!=nullptr && obj->size() > 0)
             {
                 compiler->registerGroupObject(re, ObjectGroup::cast(obj));
             }
@@ -966,7 +966,7 @@ bool Compiler::RegisterGroupsAndTablesInRE::processNext()
 
 void Compiler::registerGroupObject(RuleElement *re, ObjectGroup *grp)
 {
-    assert(group_registry!=NULL);
+    assert(group_registry!=nullptr);
     list<FWObject*> objects;
     expandGroup(grp, objects);
     group_registry->registerGroup(grp, objects);
@@ -980,7 +980,7 @@ bool Compiler::equalObj::operator()(FWObject *o)
 
 bool Compiler::singleObjectNegation::processNext()
 {
-    Rule *rule = prev_processor->getNextRule(); if (rule==NULL) return false;
+    Rule *rule = prev_processor->getNextRule(); if (rule==nullptr) return false;
 
     RuleElement *rel = RuleElement::cast(rule->getFirstByType(re_type));
     assert(rel);
@@ -996,7 +996,7 @@ bool Compiler::singleObjectNegation::processNext()
         } else
         {
             FWObject *o = rel->front();
-            if (FWReference::cast(o)!=NULL) o=FWReference::cast(o)->getPointer();
+            if (FWReference::cast(o)!=nullptr) o=FWReference::cast(o)->getPointer();
             Address *reladdr = Address::cast(o);
             if ( reladdr && reladdr->countInetAddresses(true)==1 &&
                  !compiler->complexMatch(reladdr, compiler->fw)) 
@@ -1031,10 +1031,10 @@ bool Compiler::singleObjectNegation::processNext()
  */
 bool Compiler::fullInterfaceNegationInRE::processNext()
 {
-    Rule *rule = prev_processor->getNextRule(); if (rule==NULL) return false;
+    Rule *rule = prev_processor->getNextRule(); if (rule==nullptr) return false;
     RuleElement *itfre = RuleElement::cast(rule->getFirstByType(re_type));
 
-    if (itfre==NULL)
+    if (itfre==nullptr)
         compiler->abort(rule, "Missing interface rule element");
 
     FWOptions *fwopt = compiler->getCachedFwOpt();
@@ -1051,7 +1051,7 @@ bool Compiler::fullInterfaceNegationInRE::processNext()
         for (FWObject::iterator i=all_interfaces.begin(); i!=all_interfaces.end(); ++i)
         {
             Interface *intf = Interface::cast(*i);
-            if (intf == NULL) continue;
+            if (intf == nullptr) continue;
             if (intf->isUnprotected()) continue;
             if (intf->isLoopback()) continue;
 
@@ -1066,7 +1066,7 @@ bool Compiler::fullInterfaceNegationInRE::processNext()
         {
             // Only interface objects are allowed in the "Interface" rule element
             Interface *rule_iface = Interface::cast(FWReference::getObject(*i));
-            if (rule_iface == NULL) continue;
+            if (rule_iface == nullptr) continue;
             // If this interface belongs to a cluster (which can only happen
             // if the rule set belongs to  a cluster), then replace it with
             // corresponding interface of the member
@@ -1097,21 +1097,21 @@ bool Compiler::fullInterfaceNegationInRE::processNext()
  */
 bool Compiler::replaceClusterInterfaceInItfRE::processNext()
 {
-    Rule *rule = prev_processor->getNextRule(); if (rule==NULL) return false;
+    Rule *rule = prev_processor->getNextRule(); if (rule==nullptr) return false;
     RuleElement *itfre = RuleElement::cast(rule->getFirstByType(re_type));
-    if (itfre==NULL)
+    if (itfre==nullptr)
         compiler->abort(rule, "Missing interface rule element");
 
     map<FWObject*, FWObject*> interface_replacement;
 
     for (FWObject::iterator i=itfre->begin(); i!=itfre->end(); ++i)
     {
-        Interface *member_iface = NULL;
+        Interface *member_iface = nullptr;
 
         // Only interface objects are allowed in the "Interface" rule element
         FWObject *o = FWReference::getObject(*i);
         Interface *rule_iface = Interface::cast(o);
-        if (rule_iface == NULL) continue;
+        if (rule_iface == nullptr) continue;
         // If this interface belongs to a cluster (which can only happen
         // if the rule set belongs to  a cluster), then replace it with
         // corresponding interface of the member
@@ -1143,9 +1143,9 @@ bool Compiler::replaceClusterInterfaceInItfRE::processNext()
 
 bool Compiler::eliminateDuplicatesInRE::processNext()
 {
-    Rule *rule=prev_processor->getNextRule(); if (rule==NULL) return false;
+    Rule *rule=prev_processor->getNextRule(); if (rule==nullptr) return false;
     
-    if (comparator==NULL) comparator = new equalObj();
+    if (comparator==nullptr) comparator = new equalObj();
 
     RuleElement *re = RuleElement::cast(rule->getFirstByType(re_type));
 
@@ -1154,7 +1154,7 @@ bool Compiler::eliminateDuplicatesInRE::processNext()
     for(list<FWObject*>::iterator i=re->begin(); i!=re->end(); ++i)
     {
         FWObject *obj = FWReference::getObject(*i);
-        if (obj == NULL) continue;
+        if (obj == nullptr) continue;
 
         comparator->set(obj);
 
@@ -1183,7 +1183,7 @@ void  Compiler::recursiveGroupsInRE::isRecursiveGroup(int grid, FWObject *obj)
     for (FWObject::iterator i=obj->begin(); i!=obj->end(); i++) 
     {
         FWObject *o = FWReference::getObject(*i);
-        if (Group::cast(o)!=NULL)
+        if (Group::cast(o)!=nullptr)
         {
             if (o->getId()==grid || obj->getId()==o->getId())
             {
@@ -1199,10 +1199,10 @@ void  Compiler::recursiveGroupsInRE::isRecursiveGroup(int grid, FWObject *obj)
 
 bool Compiler::recursiveGroupsInRE::processNext()
 {
-    Rule *rule=prev_processor->getNextRule(); if (rule==NULL) return false;
+    Rule *rule=prev_processor->getNextRule(); if (rule==nullptr) return false;
     RuleElement *re = RuleElement::cast(rule->getFirstByType(re_type));
 
-    if (re == NULL || re->isAny())
+    if (re == nullptr || re->isAny())
     {
         tmp_queue.push_back(rule);
         return true;
@@ -1212,7 +1212,7 @@ bool Compiler::recursiveGroupsInRE::processNext()
     for (FWObject::iterator i=re->begin(); i!=re->end(); i++) 
     {
         FWObject *o = FWReference::getObject(*i);
-        if (Group::cast(o)!=NULL)  isRecursiveGroup(o->getId(),o);
+        if (Group::cast(o)!=nullptr)  isRecursiveGroup(o->getId(),o);
     }
 
     tmp_queue.push_back(rule);
@@ -1240,11 +1240,11 @@ int  Compiler::emptyGroupsInRE::countChildren(FWObject *obj)
         // have some addresses at run time. So we just count it as a
         // regular object.
 
-        if (MultiAddress::cast(o)!=NULL && MultiAddress::cast(o)->isRunTime())
+        if (MultiAddress::cast(o)!=nullptr && MultiAddress::cast(o)->isRunTime())
             n++;
         else
         {
-            if (Group::cast(o)!=NULL)  n += countChildren(o);
+            if (Group::cast(o)!=nullptr)  n += countChildren(o);
             else n++;   // but if it is not a group, then we count it.
         }
     }
@@ -1253,10 +1253,10 @@ int  Compiler::emptyGroupsInRE::countChildren(FWObject *obj)
 
 bool Compiler::emptyGroupsInRE::processNext()
 {
-    Rule *rule=prev_processor->getNextRule(); if (rule==NULL) return false;
+    Rule *rule=prev_processor->getNextRule(); if (rule==nullptr) return false;
     RuleElement *re = RuleElement::cast(rule->getFirstByType(re_type));
 
-    if (re == NULL || re->isAny())
+    if (re == nullptr || re->isAny())
     {
         tmp_queue.push_back(rule);
         return true;
@@ -1267,10 +1267,10 @@ bool Compiler::emptyGroupsInRE::processNext()
     {
         FWObject *o = FWReference::getObject(*i);
  
-        if ( MultiAddress::cast(o)!=NULL && MultiAddress::cast(o)->isRunTime())
+        if ( MultiAddress::cast(o)!=nullptr && MultiAddress::cast(o)->isRunTime())
             continue;
 
-        if (Group::cast(o)!=NULL && countChildren(o)==0)
+        if (Group::cast(o)!=nullptr && countChildren(o)==0)
             cl.push_back(o);
     }
 
@@ -1335,10 +1335,10 @@ bool Compiler::emptyGroupsInRE::processNext()
  */
 bool Compiler::swapMultiAddressObjectsInRE::processNext()
 {
-    Rule *rule=prev_processor->getNextRule(); if (rule==NULL) return false;
+    Rule *rule=prev_processor->getNextRule(); if (rule==nullptr) return false;
 
     RuleElement *re=RuleElement::cast( rule->getFirstByType(re_type) );
-    if (re == NULL || re->isAny())
+    if (re == nullptr || re->isAny())
     {
         tmp_queue.push_back(rule);
         return true;
@@ -1348,7 +1348,7 @@ bool Compiler::swapMultiAddressObjectsInRE::processNext()
     for (FWObject::iterator i=re->begin(); i!=re->end(); i++)
     {
         FWObject *o = FWReference::getObject(*i);
-        if (MultiAddress::cast(o)!=NULL && MultiAddress::cast(o)->isRunTime())
+        if (MultiAddress::cast(o)!=nullptr && MultiAddress::cast(o)->isRunTime())
             cl.push_back(MultiAddress::cast(o));
     }
 
@@ -1369,7 +1369,7 @@ bool Compiler::swapMultiAddressObjectsInRE::processNext()
             int mart_id = FWObjectDatabase::registerStringId(mart_id_str);
             MultiAddressRunTime *mart = MultiAddressRunTime::cast(
                 compiler->dbcopy->findInIndex(mart_id));
-            if (mart==NULL)
+            if (mart==nullptr)
             {
                 mart = new MultiAddressRunTime(ma);
 
@@ -1396,7 +1396,7 @@ bool Compiler::swapMultiAddressObjectsInRE::processNext()
 
 bool Compiler::expandMultipleAddressesInRE::processNext()
 {
-    Rule *rule = prev_processor->getNextRule(); if (rule==NULL) return false;
+    Rule *rule = prev_processor->getNextRule(); if (rule==nullptr) return false;
     RuleElement *re = RuleElement::cast( rule->getFirstByType(re_type) );
     if (re) compiler->_expand_addr(rule, re, true);
     tmp_queue.push_back(rule);
@@ -1406,12 +1406,12 @@ bool Compiler::expandMultipleAddressesInRE::processNext()
 
 bool Compiler::checkForObjectsWithErrors::processNext()
 {
-    Rule *rule = prev_processor->getNextRule(); if (rule==NULL) return false;
+    Rule *rule = prev_processor->getNextRule(); if (rule==nullptr) return false;
     
     for (FWObject::iterator it1=rule->begin(); it1!=rule->end(); it1++)
     {
         RuleElement *re = RuleElement::cast(*it1);
-        if (re == NULL || re->isAny()) continue;
+        if (re == nullptr || re->isAny()) continue;
         for (FWObject::iterator it2=re->begin(); it2!=re->end(); it2++)
         {
             FWObject *obj = FWReference::getObject(*it2);
@@ -1435,10 +1435,10 @@ bool Compiler::checkForObjectsWithErrors::processNext()
 
 bool Compiler::replaceFailoverInterfaceInRE::processNext()
 {
-    Rule *rule = prev_processor->getNextRule(); if (rule==NULL) return false;
+    Rule *rule = prev_processor->getNextRule(); if (rule==nullptr) return false;
     RuleElement *re = RuleElement::cast( rule->getFirstByType(re_type) );
 
-    if (re == NULL || re->isAny())
+    if (re == nullptr || re->isAny())
     {
         tmp_queue.push_back(rule);
         return true;
@@ -1449,7 +1449,7 @@ bool Compiler::replaceFailoverInterfaceInRE::processNext()
     for (FWObject::iterator i=re->begin(); i!=re->end(); i++)
     {
         Interface *intf = Interface::cast(FWReference::getObject(*i));
-        if (intf==NULL) continue;
+        if (intf==nullptr) continue;
 
         if (intf->isFailoverInterface()) cl.push_back(intf);
         else
@@ -1500,7 +1500,7 @@ bool Compiler::replaceFailoverInterfaceInRE::processNext()
 bool Compiler::FindAddressFamilyInRE(FWObject *parent, bool ipv6)
 {
     Address *addr = Address::cast(parent);
-    if (addr!=NULL)
+    if (addr!=nullptr)
     {
         const  InetAddr *inet_addr = addr->getAddressPtr();
         if (ipv6)
@@ -1559,7 +1559,7 @@ bool Compiler::dropRuleWithEmptyRE::isREEmpty(Rule *rule,
  */
 bool Compiler::dropRuleWithEmptyRE::processNext()
 {
-    Rule *rule = prev_processor->getNextRule(); if (rule==NULL) return false;
+    Rule *rule = prev_processor->getNextRule(); if (rule==nullptr) return false;
 
     if (PolicyRule::cast(rule) &&
         (isREEmpty(rule, RuleElementSrc::TYPENAME) ||
@@ -1607,7 +1607,7 @@ void Compiler::DropByServiceTypeInRE(RuleElement *rel, bool drop_ipv6)
 
         Service *svc = Service::cast(o);
 
-        if (svc == NULL)
+        if (svc == nullptr)
         {
             cerr << endl;
             cerr << "Rule " << Rule::cast(rel->getParent())->getLabel()
@@ -1641,7 +1641,7 @@ bool Compiler::catchUnnumberedIfaceInRE(RuleElement *re)
     for (FWObject::iterator i=re->begin(); i!=re->end(); i++) 
     {
         FWObject *o = FWReference::getObject(*i);
-        if (o==NULL)
+        if (o==nullptr)
         {
             //Rule *rule = Rule::cast(re->getParent());
             FWReference *refo = FWReference::cast(*i);
@@ -1651,7 +1651,7 @@ bool Compiler::catchUnnumberedIfaceInRE(RuleElement *re)
                 FWObjectDatabase::getStringId(refo->getPointerId());
             abort(re->getParent(), errmsg);
         }
-        err |= ((iface=Interface::cast(o))!=NULL &&
+        err |= ((iface=Interface::cast(o))!=nullptr &&
                 (iface->isUnnumbered() || iface->isBridgePort())
         );
     }
@@ -1682,7 +1682,7 @@ Service* Compiler::getFirstSrv(PolicyRule *rule)
 Interval* Compiler::getFirstWhen(PolicyRule *rule)
 {
     RuleElementInterval *when = rule->getWhen();
-    if (when==NULL) return NULL;  // when is optional element
+    if (when==nullptr) return nullptr;  // when is optional element
     FWObject *o = FWReference::getObject(when->front());
     return Interval::cast(o);
 }
@@ -1690,7 +1690,7 @@ Interval* Compiler::getFirstWhen(PolicyRule *rule)
 Interface* Compiler::getFirstItf(PolicyRule *rule)
 {
     RuleElementItf *itf = rule->getItf();
-    if (itf==NULL || itf->size()==0) return NULL;  // itf is optional element
+    if (itf==nullptr || itf->size()==0) return nullptr;  // itf is optional element
     FWObject *o = FWReference::getObject(itf->front());
     return Interface::cast(o);
 }
@@ -1698,7 +1698,7 @@ Interface* Compiler::getFirstItf(PolicyRule *rule)
 Address* Compiler::getFirstOSrc(NATRule *rule)
 {
     RuleElementOSrc *osrc = rule->getOSrc();
-    assert(osrc!=NULL);
+    assert(osrc!=nullptr);
     FWObject *o = FWReference::getObject(osrc->front());
     return Address::cast(o);
 }
@@ -1706,7 +1706,7 @@ Address* Compiler::getFirstOSrc(NATRule *rule)
 Address* Compiler::getFirstODst(NATRule *rule)
 {
     RuleElementODst *odst = rule->getODst();
-    assert(odst!=NULL);
+    assert(odst!=nullptr);
     FWObject *o = FWReference::getObject(odst->front());
     return Address::cast(o);
 }
@@ -1714,7 +1714,7 @@ Address* Compiler::getFirstODst(NATRule *rule)
 Service* Compiler::getFirstOSrv(NATRule *rule)
 {
     RuleElementOSrv *osrv = rule->getOSrv();
-    assert(osrv!=NULL);
+    assert(osrv!=nullptr);
     FWObject *o = FWReference::getObject(osrv->front());
     return Service::cast(o);
 }
@@ -1722,7 +1722,7 @@ Service* Compiler::getFirstOSrv(NATRule *rule)
 Address* Compiler::getFirstTSrc(NATRule *rule)
 {
     RuleElementTSrc *tsrc = rule->getTSrc();
-    assert(tsrc!=NULL);
+    assert(tsrc!=nullptr);
     FWObject *o = FWReference::getObject(tsrc->front());
     return Address::cast(o);
 }
@@ -1730,7 +1730,7 @@ Address* Compiler::getFirstTSrc(NATRule *rule)
 Address* Compiler::getFirstTDst(NATRule *rule)
 {
     RuleElementTDst *tdst = rule->getTDst();
-    assert(tdst!=NULL);
+    assert(tdst!=nullptr);
     FWObject *o = FWReference::getObject(tdst->front());
     return Address::cast(o);
 }
@@ -1738,7 +1738,7 @@ Address* Compiler::getFirstTDst(NATRule *rule)
 Service* Compiler::getFirstTSrv(NATRule *rule)
 {
     RuleElementTSrv *tsrv = rule->getTSrv();
-    assert(tsrv!=NULL);
+    assert(tsrv!=nullptr);
     FWObject *o = FWReference::getObject(tsrv->front());
     return Service::cast(o);
 }
@@ -1842,21 +1842,21 @@ Address* Compiler::correctForCluster(Address *addr)
  */
 bool Compiler::DropRulesByAddressFamilyAndServiceType::processNext()
 {
-    Rule *rule = prev_processor->getNextRule(); if (rule==NULL) return false;
+    Rule *rule = prev_processor->getNextRule(); if (rule==nullptr) return false;
 
     for(FWObject::iterator it=rule->begin(); it!=rule->end(); ++it)
     {
         RuleElement *re = RuleElement::cast(*it);
-        if (re == NULL) continue;  // probably RuleOptions object
+        if (re == nullptr) continue;  // probably RuleOptions object
 
         bool orig_any = re->isAny();
         if (orig_any) continue;
 
         FWObject *first_object = FWReference::getObject(re->front());
-        if (Address::cast(first_object) != NULL)
+        if (Address::cast(first_object) != nullptr)
             compiler->DropAddressFamilyInRE(re, drop_ipv6);
 
-        if (Service::cast(first_object) != NULL)
+        if (Service::cast(first_object) != nullptr)
             compiler->DropByServiceTypeInRE(re, drop_ipv6);
 
         if (!orig_any && re->isAny())

src/libgui/AddressRangeDialog.cpp

@@ -56,7 +56,7 @@ AddressRangeDialog::AddressRangeDialog(QWidget *parent):
 {
     m_dialog = new Ui::AddressRangeDialog_q;
     m_dialog->setupUi(this);
-    obj=NULL;
+    obj=nullptr;
 
     connectSignalsOfAllWidgetsToSlotChange();
 }
@@ -70,7 +70,7 @@ void AddressRangeDialog::loadFWObject(FWObject *o)
 {
     obj=o;
     AddressRange *s = dynamic_cast<AddressRange*>(obj);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
     init=true;
 
@@ -99,7 +99,7 @@ void AddressRangeDialog::validate(bool *res)
     if (!validateName(this,obj,m_dialog->obj_name->text())) { *res=false; return; }
 
     AddressRange *s = dynamic_cast<AddressRange*>(obj);
-    assert(s!=NULL);
+    assert(s!=nullptr);
     try
     {
         InetAddr range_start(AF_UNSPEC, m_dialog->rangeStart->text().toLatin1().constData());
@@ -118,13 +118,13 @@ void AddressRangeDialog::validate(bool *res)
     {
         *res = false;
         // show warning dialog only if app has focus
-        if (QApplication::focusWidget() != NULL)
+        if (QApplication::focusWidget() != nullptr)
         {
             blockSignals(true);
             QMessageBox::critical(
                 this, "Firewall Builder",
                 QString::fromUtf8(ex.toString().c_str()),
-                tr("&Continue"), 0, 0,
+                tr("&Continue"), nullptr, nullptr,
                 0 );
             blockSignals(false);
         }
@@ -138,7 +138,7 @@ void AddressRangeDialog::applyChanges()
     FWObject* new_state = cmd->getNewState();
 
     AddressRange *s = dynamic_cast<AddressRange*>(new_state);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
     string oldname = obj->getName();
     new_state->setName( string(m_dialog->obj_name->text().toUtf8().constData()) );

src/libgui/AddressTableDialog.cpp

@@ -66,7 +66,7 @@ AddressTableDialog::AddressTableDialog(QWidget *parent) : BaseObjectDialog(paren
 {
     m_dialog = new Ui::AddressTableDialog_q;
     m_dialog->setupUi(this);
-    obj=NULL;
+    obj=nullptr;
 
     connectSignalsOfAllWidgetsToSlotChange();
 }
@@ -80,7 +80,7 @@ void AddressTableDialog::loadFWObject(FWObject *o)
 {
     obj=o;
     AddressTable *s = dynamic_cast<AddressTable*>(obj);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
 
     init = true;
@@ -116,7 +116,7 @@ void AddressTableDialog::validate(bool *res)
 {
     *res=true;
     AddressTable *s = dynamic_cast<AddressTable*>(obj);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
     if (!validateName(this,obj,m_dialog->obj_name->text())) { *res=false; return; }
 }
@@ -127,7 +127,7 @@ void AddressTableDialog::applyChanges()
     FWObject* new_state = cmd->getNewState();
 
     AddressTable *s = dynamic_cast<AddressTable*>(new_state);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
     string oldname = obj->getName();
     new_state->setName( string(m_dialog->obj_name->text().toUtf8().constData()) );

src/libgui/AskLibForCopyDialog.cpp

@@ -41,7 +41,7 @@ FWObject *AskLibForCopyDialog::askLibForCopyDialog( QWidget *parent,
     AskLibForCopyDialog dlg(parent, db, curr);
     if ( dlg.exec() == QDialog::Accepted )
         return dlg.getChoosenLib();
-    return 0;
+    return nullptr;
 }
 
 AskLibForCopyDialog::~AskLibForCopyDialog()
@@ -110,5 +110,5 @@ FWObject *AskLibForCopyDialog::getChoosenLib()
     int ind = m_dialog->libs->currentIndex();
     if (0 <= ind)
         return idxToLibs[ind];
-    return 0;
+    return nullptr;
 }

src/libgui/AttachedNetworksDialog.cpp

@@ -59,7 +59,7 @@ AttachedNetworksDialog::AttachedNetworksDialog(QWidget *parent) : BaseObjectDial
 {
     m_dialog = new Ui::AttachedNetworksDialog_q;
     m_dialog->setupUi(this);
-    obj=NULL;
+    obj=nullptr;
 
     connectSignalsOfAllWidgetsToSlotChange();
 }
@@ -70,7 +70,7 @@ void AttachedNetworksDialog::loadFWObject(FWObject *o)
 {
     obj=o;
     AttachedNetworks *s = dynamic_cast<AttachedNetworks*>(obj);
-    assert(s!=NULL);
+    assert(s!=nullptr);
     
     init=true;
 
@@ -129,7 +129,7 @@ void AttachedNetworksDialog::validate(bool *result)
 
     *result = true;
     AttachedNetworks *s = dynamic_cast<AttachedNetworks*>(obj);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
     if (!validateName(this, obj, m_dialog->obj_name->text()))
     {
@@ -144,7 +144,7 @@ void AttachedNetworksDialog::applyChanges()
     FWObject* new_state = cmd->getNewState();
 
     AttachedNetworks *s = dynamic_cast<AttachedNetworks*>(new_state);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
     string oldname = obj->getName();
     new_state->setName(string(m_dialog->obj_name->text().toUtf8().constData()));

src/libgui/ClusterGroupDialog.cpp

@@ -58,7 +58,7 @@ ClusterGroupDialog::ClusterGroupDialog(QWidget *parent)
 {
     m_dialog = new Ui::ClusterGroupDialog_q;
     m_dialog->setupUi(this);
-    obj = NULL;
+    obj = nullptr;
     reload = false;
 
     connectSignalsOfAllWidgetsToSlotChange();
@@ -68,7 +68,7 @@ void ClusterGroupDialog::loadFWObject(FWObject *o)
 {
     obj = o;
     ClusterGroup *g = dynamic_cast<ClusterGroup*>(obj);
-    assert(g != NULL);
+    assert(g != nullptr);
 
     init = true;
 
@@ -76,7 +76,7 @@ void ClusterGroupDialog::loadFWObject(FWObject *o)
     // Parent is either 'Cluster' or 'Interface', call getParent() approprietly
     FWObject *parent = obj;
     while (parent && !Cluster::isA(parent)) parent = parent->getParent();
-    if (parent == NULL)
+    if (parent == nullptr)
     {
         throw FWException("ClusterGroupDialog: parent is NULL!");
     }
@@ -199,7 +199,7 @@ void ClusterGroupDialog::saveGroupType(FWObject *group)
 void ClusterGroupDialog::addIcon(FWObject *o, bool master)
 {
     FWObject *iface = o;
-    assert(Interface::cast(iface)!=NULL);
+    assert(Interface::cast(iface)!=nullptr);
     FWObject *fw = Host::getParentHost(iface);
 //    FWObject *fw = Interface::cast(iface)->getParentHost(); // because iface can be subinterface
     bool valid = cluster->validateMember(Firewall::cast(fw));
@@ -280,7 +280,7 @@ void ClusterGroupDialog::applyChanges()
     FWObject* new_state = cmd->getNewState();
 
     ClusterGroup *g = dynamic_cast<ClusterGroup*>(new_state);
-    assert(g != NULL);
+    assert(g != nullptr);
 
     QString oldname = obj->getName().c_str();
     new_state->setName(string(m_dialog->obj_name->text().toUtf8().constData()));
@@ -304,12 +304,12 @@ void ClusterGroupDialog::openClusterConfDialog()
     try
     {
         QWidget *w = DialogFactory::createClusterConfDialog(this, obj);
-        if (w == NULL)
+        if (w == nullptr)
         {
             return;   // some dialogs may not be implemented yet
         }
         QDialog *d = dynamic_cast<QDialog*>(w);
-        assert(d != NULL);
+        assert(d != nullptr);
 
         // connect obj changed signal
         //connect(d, SIGNAL(membersChanged()), this, SLOT(objectChanged()));
@@ -343,10 +343,10 @@ void ClusterGroupDialog::openClusterConfDialog()
 void ClusterGroupDialog::openObject(QTreeWidgetItem *item)
 {
     ObjectListViewItem *otvi = dynamic_cast<ObjectListViewItem*>(item);
-    assert(otvi != NULL);
+    assert(otvi != nullptr);
 
     FWObject *o = otvi->getFWObject();
-    if (o != NULL)
+    if (o != nullptr)
     {
         QCoreApplication::postEvent(
             mw, new showObjectInTreeEvent(o->getRoot()->getFileName().c_str(),

src/libgui/ClusterInterfaceWidget.cpp

@@ -145,7 +145,7 @@ bool ClusterInterfaceWidget::setCurrentInterface(const QString& name)
         foreach(QTreeWidgetItem *item, list.list->findItems(name, Qt::MatchCaseSensitive | Qt::MatchExactly | Qt::MatchRecursive))
         {
             Interface *iface = item->data(0, Qt::UserRole).value<Interface*>();
-            if (iface == NULL) continue;
+            if (iface == nullptr) continue;
             if ( item == roots[list.list] ) continue; // skip firewall object
             if ( interfaceSelectable(iface) ) // interface is good for use in cluster
             {
@@ -195,7 +195,7 @@ bool ClusterInterfaceWidget::interfaceSelectable(Interface* iface)
 
     Resources* os_res = Resources::os_res[os.toStdString()];
     string os_family = os.toStdString();
-    if (os_res!=NULL)
+    if (os_res!=nullptr)
         os_family = os_res->getResourceStr("/FWBuilderResources/Target/family");
 
     unique_ptr<interfaceProperties> int_prop(

src/libgui/CommentEditorPanel.cpp

@@ -55,7 +55,7 @@ CommentEditorPanel::CommentEditorPanel(QWidget *p) : BaseObjectDialog(p)
 {
     m_widget = new Ui::CommentEditorPanel_q;
     m_widget->setupUi(this);
-    rule=NULL;
+    rule=nullptr;
 }
 
 QString CommentEditorPanel::text()

src/libgui/CompilerDriverFactory.cpp

@@ -60,6 +60,6 @@ CompilerDriver* CompilerDriverFactory::createCompilerDriver(Firewall *fw)
         return new CompilerDriver_pix(fw->getRoot());
     if (platform == "procurve_acl")
         return new CompilerDriver_procurve_acl(fw->getRoot());
-    return NULL;
+    return nullptr;
 }
 

src/libgui/CompilerOutputPanel.cpp

@@ -132,7 +132,7 @@ void CompilerOutputPanel::loadFWObject(FWObject *obj)
 
     //m_widget->compiler_output_panel->clear();
 
-    if (dr == NULL)
+    if (dr == nullptr)
     {
         // we have no compiler for this platform or unknown platform
         format = error_format;

src/libgui/ConfirmDeleteObjectDialog.cpp

@@ -107,7 +107,7 @@ void ConfirmDeleteObjectDialog::findForObject(FWObject *obj)
     foreach(FWObject *o, simplified_holders)
     {
         QTreeWidgetItem *item = FindWhereUsedWidget::createQTWidgetItem(obj, o);
-        if (item==NULL) continue;
+        if (item==nullptr) continue;
         m_dialog->objectsView->addTopLevelItem(item);
         itemCounter++;
     }

src/libgui/CustomServiceDialog.cpp

@@ -57,7 +57,7 @@ CustomServiceDialog::CustomServiceDialog(QWidget *parent) : BaseObjectDialog(par
 {
     m_dialog = new Ui::CustomServiceDialog_q;
     m_dialog->setupUi(this);
-    obj=NULL;
+    obj=nullptr;
 
     connectSignalsOfAllWidgetsToSlotChange();
 }
@@ -71,7 +71,7 @@ void CustomServiceDialog::loadFWObject(FWObject *o)
 {
     obj=o;
     CustomService *s = dynamic_cast<CustomService*>(obj);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
     init=true;
 
@@ -202,7 +202,7 @@ void CustomServiceDialog::applyChanges()
     FWObject* new_state = cmd->getNewState();
 
     CustomService *s = dynamic_cast<CustomService*>(new_state);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
     string oldname = obj->getName();
     new_state->setName( string(m_dialog->obj_name->text().toUtf8().constData()) );

src/libgui/DynamicGroupDialog.cpp

@@ -349,7 +349,7 @@ void DynamicGroupDialog::gotItemDoubleClicked(QTreeWidgetItem *item, int)
 {
     int objId = item->data(0, Qt::UserRole).toInt();
     FWObject *o = m_project->db()->findInIndex(objId);
-    if (o == 0) return;
+    if (o == nullptr) return;
 
     QCoreApplication::postEvent(m_project, new showObjectInTreeEvent(o->getRoot()->getFileName().c_str(), objId));
     QCoreApplication::postEvent(mw, new openObjectInEditorEvent(o->getRoot()->getFileName().c_str(), objId));

src/libgui/FWCmdAddObject.cpp

@@ -118,7 +118,7 @@ void FWCmdAddObject::prepareStatesForRedo()
     // remove it but increment reference counter.
     FWObject* grp = getObject();
     FWObject *new_grp = getNewState();
-    if (member == NULL)
+    if (member == nullptr)
     {
         // Find new object among children of newState.  member can be
         // NULL if FWCmdAddObject object is created before the new
@@ -272,7 +272,7 @@ FWCmdAddLibrary::FWCmdAddLibrary(ProjectPanel *project,
                                  QUndoCommand* macro):
     FWCmdAddObject(project, root, lib, text, macro)
 {
-    assert(FWObjectDatabase::cast(root)!=NULL);
+    assert(FWObjectDatabase::cast(root)!=nullptr);
 
     if (text.isEmpty())
     {

src/libgui/FWCmdMoveObject.cpp

@@ -75,7 +75,7 @@ FWCmdMoveObject::FWCmdMoveObject(
 {
     old_parent = old_p;
     new_parent = new_p;
-    current_parent = NULL;
+    current_parent = nullptr;
     obj = o;
 
     if (text.isEmpty())
@@ -258,7 +258,7 @@ void FWCmdMoveObject::notify()
     QCoreApplication::postEvent(
         mw, new dataModifiedEvent(filename, new_parent->getId()));
 
-    FWObject *new_obj = NULL;
+    FWObject *new_obj = nullptr;
     if (current_parent->getId()==FWObjectDatabase::DELETED_OBJECTS_ID)
     {
         if (Library::isA(obj))
@@ -277,13 +277,13 @@ void FWCmdMoveObject::notify()
             {
 //                new_obj = old_parent;  // this does not work!
                 new_obj = project->m_panel->om->getNextUserLib(obj);
-                if (new_obj == NULL)
+                if (new_obj == nullptr)
                 {
                     // no user libraries left, show "Standard"
                     new_obj = old_parent->getRoot()->findInIndex(
                         FWObjectDatabase::getIntId("syslib000"));
                 }
-                if (new_obj == NULL)
+                if (new_obj == nullptr)
                     new_obj = old_parent->getRoot()->front();
                 if (fwbdebug) qDebug() << "FWCmdMoveObject::notify() new_obj="
                                        << new_obj;

src/libgui/FWObjectClipboard.cpp

@@ -37,18 +37,18 @@
 using namespace std;
 using namespace libfwbuilder;
 
-FWObjectClipboard* FWObjectClipboard::obj_clipboard=NULL;
+FWObjectClipboard* FWObjectClipboard::obj_clipboard=nullptr;
 
 FWObjectClipboard::FWObjectClipboard()
 {
-    assert(obj_clipboard==NULL);
+    assert(obj_clipboard==nullptr);
     obj_clipboard=this;
 }
 
 FWObjectClipboard::~FWObjectClipboard()
 {
     clear();
-    obj_clipboard=NULL;
+    obj_clipboard=nullptr;
 }
 
 void FWObjectClipboard::clear()
@@ -115,7 +115,7 @@ FWObject* FWObjectClipboard::getObject()
         pair<int,ProjectPanel*> p = ids.back();
         return p.second->db()->findInIndex( p.first );
     } else
-        return NULL;
+        return nullptr;
 }
 
 FWObject* FWObjectClipboard::getObjectByIdx (int idx)
@@ -125,6 +125,6 @@ FWObject* FWObjectClipboard::getObjectByIdx (int idx)
         pair<int,ProjectPanel*> p = ids[idx];
         return p.second->db()->findInIndex( p.first );
     } else
-        return NULL;
+        return nullptr;
 }
 

src/libgui/FWObjectDropArea.cpp

@@ -69,7 +69,7 @@ FWObjectDropArea::FWObjectDropArea(QWidget*p, const char * n, Qt::WindowFlags f)
     setWindowFlags( f );
     m_objectDropArea = new Ui::FWObjectDropArea_q;
     m_objectDropArea->setupUi(this);
-    object=NULL;
+    object=nullptr;
     helperText = tr("Drop object here.");
 
 }
@@ -93,7 +93,7 @@ void FWObjectDropArea::paintEvent(QPaintEvent *)
     tp.drawLine(0,h-1,0,0);
     tp.fillRect(1, 1, w-2, h-2, Qt::white);
 
-    if (object!=NULL)
+    if (object!=nullptr)
     {
 
         QPixmap pm;
@@ -147,7 +147,7 @@ void FWObjectDropArea::insertObject(libfwbuilder::FWObject *o)
 
 void FWObjectDropArea::deleteObject()
 {
-    object=NULL;
+    object=nullptr;
     update();
     emit objectDeleted();
 }
@@ -166,9 +166,9 @@ void FWObjectDropArea::contextMenuEvent (QContextMenuEvent * e)
     popup->addSeparator();
     QAction *dlAct = popup->addAction( tr("Delete") ,   this , SLOT( deleteObject( )) );
 
-    sitAct->setEnabled(object!=NULL);
+    sitAct->setEnabled(object!=nullptr);
-    editAct->setEnabled(object!=NULL);
+    editAct->setEnabled(object!=nullptr);
-    dlAct->setEnabled(object!=NULL);
+    dlAct->setEnabled(object!=nullptr);
     psAct->setEnabled(FWObjectClipboard::obj_clipboard->size()>0);
 
     popup->exec(e->globalPos ());
@@ -239,7 +239,7 @@ void FWObjectDropArea::pasteObject()
 void FWObjectDropArea::showInTreeObject()
 {
     ProjectPanel * pp = mw->activeProject();
-    if (pp!=NULL)
+    if (pp!=nullptr)
     {
         QCoreApplication::postEvent(
             pp, new showObjectInTreeEvent(pp->getFileName(), object->getId()));
@@ -249,9 +249,9 @@ void FWObjectDropArea::showInTreeObject()
 void FWObjectDropArea::editObject()
 {
     ProjectPanel * pp = mw->activeProject();
-    if (pp!=NULL)
+    if (pp!=nullptr)
     {
-        if (RuleSet::cast(object)!=NULL)
+        if (RuleSet::cast(object)!=nullptr)
             QCoreApplication::postEvent(
                 pp, new openRulesetEvent(pp->getFileName(), object->getId()));
 
@@ -264,5 +264,5 @@ void FWObjectDropArea::editObject()
 
 void FWObjectDropArea::mouseDoubleClickEvent(QMouseEvent *)
 {
-    if (object!=NULL) editObject();
+    if (object!=nullptr) editObject();
 }

src/libgui/FWObjectPropertiesFactory.cpp

@@ -159,11 +159,11 @@ QString FWObjectPropertiesFactory::getObjectPropertiesBrief(FWObject *obj)
             str << "/";
             str << QString("%1").arg(n->getNetmaskPtr()->getLength());
 
-        } else if (ClusterGroup::cast(obj)!=NULL)
+        } else if (ClusterGroup::cast(obj)!=nullptr)
         {
             ClusterGroup *g = ClusterGroup::cast(obj);
             str << QObject::tr("type: ") << g->getStr("type").c_str();
-        } else if (Group::cast(obj)!=NULL)   // just any group
+        } else if (Group::cast(obj)!=nullptr)   // just any group
         {
             Group *g=Group::cast(obj);
             str << g->size() << " " << QObject::tr(" objects");
@@ -255,7 +255,7 @@ QString FWObjectPropertiesFactory::getObjectPropertiesBrief(FWObject *obj)
         {
             const UserService* user_srv = UserService::constcast(obj);
             str << "User id: \"" << user_srv->getUserId().c_str() << "\"" ;
-        } else if (RuleSet::cast(obj) != NULL)
+        } else if (RuleSet::cast(obj) != nullptr)
         {
             QStringList attrs;
             RuleSet *rs = RuleSet::cast(obj);
@@ -356,10 +356,10 @@ QString FWObjectPropertiesFactory::getObjectProperties(FWObject *obj)
                 str << "(no ip address)";
 
             FWObject *co=obj->getFirstByType("Interface");
-            if (co!=NULL) 
+            if (co!=nullptr) 
             {
                 physAddress *paddr=(Interface::cast(co))->getPhysicalAddress();
-                if (paddr!=NULL) 
+                if (paddr!=nullptr) 
                     str << "    " <<  paddr->getPhysAddress().c_str();
             }
 
@@ -377,7 +377,7 @@ QString FWObjectPropertiesFactory::getObjectProperties(FWObject *obj)
                 .arg(n->getAddressPtr()->toString().c_str())
                 .arg(n->getNetmaskPtr()->getLength());
 
-        } else if (ClusterGroup::cast(obj)!=NULL)
+        } else if (ClusterGroup::cast(obj)!=nullptr)
         {
             ClusterGroup *g = ClusterGroup::cast(obj);
             str << QObject::tr("Type: ") << g->getStr("type").c_str() << " ";
@@ -399,10 +399,10 @@ QString FWObjectPropertiesFactory::getObjectProperties(FWObject *obj)
                 members.push_front(QObject::tr("Members:"));
                 str << members.join(" ");
             }
-        } else if (DynamicGroup::cast(obj) != 0) {
+        } else if (DynamicGroup::cast(obj) != nullptr) {
             DynamicGroup *objGroup = DynamicGroup::cast(obj);
             str << QObject::tr("%1 filters").arg(objGroup->getFilter().size());
-        } else if (Group::cast(obj)!=NULL)   // just any group
+        } else if (Group::cast(obj)!=nullptr)   // just any group
         {
             Group *g=Group::cast(obj);
             str << QObject::tr("%1 objects").arg(g->size());
@@ -696,7 +696,7 @@ QString FWObjectPropertiesFactory::getObjectPropertiesDetailed(FWObject *obj,
             str += n->getAddressPtr()->toString().c_str();
             str += "/";
             str += QString("%1").arg(n->getNetmaskPtr()->getLength());
-        } else if (ClusterGroup::cast(obj)!=NULL)
+        } else if (ClusterGroup::cast(obj)!=nullptr)
         {
             if (showPath && !tooltip) str += "<b>Path: </b>" + path + "<br>\n";
             ClusterGroup *g = ClusterGroup::cast(obj);
@@ -712,10 +712,10 @@ QString FWObjectPropertiesFactory::getObjectPropertiesDetailed(FWObject *obj,
                         arg(fw->getName().c_str()).arg(obj->getName().c_str());
                 }
             }
-        } else if (DynamicGroup::cast(obj) != 0) {
+        } else if (DynamicGroup::cast(obj) != nullptr) {
             DynamicGroup *objGroup = DynamicGroup::cast(obj);
             str += QObject::tr("%1 filters<br>\n").arg(objGroup->getFilter().size());
-        } else if (Group::cast(obj)!=NULL)   // just any group
+        } else if (Group::cast(obj)!=nullptr)   // just any group
         {
             if (showPath && !tooltip) str += "<b>Path: </b>" + path + "<br>\n";
             Group *g = Group::cast(obj);
@@ -733,7 +733,7 @@ QString FWObjectPropertiesFactory::getObjectPropertiesDetailed(FWObject *obj,
                 } else 
                 {
                     FWObject *o1=*i;
-                    if (FWReference::cast(o1)!=NULL)
+                    if (FWReference::cast(o1)!=nullptr)
                         o1=FWReference::cast(o1)->getPointer();
                     str += QString(o1->getTypeName().c_str())
                         + "  <b>" + QString::fromUtf8(o1->getName().c_str()) + "</b><br>\n";
@@ -791,10 +791,10 @@ QString FWObjectPropertiesFactory::getObjectPropertiesDetailed(FWObject *obj,
             do
             {
                 parent_host = parent_host->getParent();
-                if (parent_host == NULL) break;
+                if (parent_host == nullptr) break;
                 short_path.push_front(QString::fromUtf8(parent_host->getName().c_str()));
             }
-            while (Host::cast(parent_host) == NULL);
+            while (Host::cast(parent_host) == nullptr);
 
             str += QString("<b>Parent: </b>%1<br>\n").arg(short_path.join("/"));
 
@@ -824,7 +824,7 @@ QString FWObjectPropertiesFactory::getObjectPropertiesDetailed(FWObject *obj,
             }
 
             physAddress *paddr = intf->getPhysicalAddress();
-            if (paddr!=NULL) 
+            if (paddr!=nullptr) 
             {
                 str += "MAC: ";
                 str +=  paddr->getPhysAddress().c_str() ;
@@ -837,8 +837,8 @@ QString FWObjectPropertiesFactory::getObjectPropertiesDetailed(FWObject *obj,
             if (intf->isBridgePort()) q=" bridge port";
             
             FWObject *p=obj;
-            while (p!=NULL && !Firewall::cast(p)) p=p->getParent();
+            while (p!=nullptr && !Firewall::cast(p)) p=p->getParent();
-            if (p!=NULL && (p->getStr("platform")=="pix" || p->getStr("platform")=="fwsm"))
+            if (p!=nullptr && (p->getStr("platform")=="pix" || p->getStr("platform")=="fwsm"))
             {
                 int sl = intf->getSecurityLevel();
                 q=q+QString("sec.level %1").arg(sl);
@@ -932,13 +932,13 @@ QString FWObjectPropertiesFactory::getRuleActionProperties(Rule *rule)
 {
     QString par = "";
 
-    if (rule!=NULL)
+    if (rule!=nullptr)
     {
         QString act = getRuleAction(rule);
         
         FWObject *o = rule;
-        while (o!=NULL && Firewall::cast(o)==NULL) o=o->getParent();
+        while (o!=nullptr && Firewall::cast(o)==nullptr) o=o->getParent();
-        if (o==NULL) return "";
+        if (o==nullptr) return "";
 
         Firewall *f=Firewall::cast(o);
         string platform=f->getStr("platform");
@@ -1003,8 +1003,8 @@ QString FWObjectPropertiesFactory::getRuleActionProperties(Rule *rule)
 QString FWObjectPropertiesFactory::getRuleActionPropertiesRich(Rule *rule)
 {
     FWObject *p=rule;
-    while (p!=NULL && !Firewall::cast(p)) p=p->getParent();
+    while (p!=nullptr && !Firewall::cast(p)) p=p->getParent();
-    if (p==NULL)
+    if (p==nullptr)
     {
         qDebug() << "FWObjectPropertiesFactory::getRuleActionPropertiesRich(): "
                  << "Can not locate parent firewall for the rule:";
@@ -1025,14 +1025,14 @@ QString FWObjectPropertiesFactory::getRuleActionPropertiesRich(Rule *rule)
 
 QString FWObjectPropertiesFactory::getPolicyRuleOptions(Rule *rule)
 {
-    if (rule == NULL) return "";
+    if (rule == nullptr) return "";
 
     QList<QPair<QString,QString> > options;
 
     PolicyRule *prule = PolicyRule::cast(rule);
     FWObject *o = rule;
-    while (o!=NULL && Firewall::cast(o)==NULL) o = o->getParent();
+    while (o!=nullptr && Firewall::cast(o)==nullptr) o = o->getParent();
-    assert(o!=NULL);
+    assert(o!=nullptr);
     Firewall *f = Firewall::cast(o);
     string platform = f->getStr("platform");
     FWOptions *ropt = rule->getOptionsObject();
@@ -1317,12 +1317,12 @@ QString FWObjectPropertiesFactory::getNATRuleOptions(Rule *rule)
 {
     QString res;
     
-    if (rule!=NULL)
+    if (rule!=nullptr)
     {
         res="";
         FWObject *o = rule;
-        while (o!=NULL && Firewall::cast(o)==NULL) o=o->getParent();
+        while (o!=nullptr && Firewall::cast(o)==nullptr) o=o->getParent();
-        assert(o!=NULL);
+        assert(o!=nullptr);
         Firewall *f=Firewall::cast(o);
         string platform=f->getStr("platform");
         FWOptions *ropt = rule->getOptionsObject();
@@ -1357,7 +1357,7 @@ QString FWObjectPropertiesFactory::getNATRuleOptions(Rule *rule)
 QString FWObjectPropertiesFactory::getInterfaceNameExamplesForHostOS(const QString &host_os)
 {
     Resources *os_resources = Resources::os_res[host_os.toStdString()];
-    if (os_resources == NULL) return "";
+    if (os_resources == nullptr) return "";
     string os_family = os_resources-> getResourceStr("/FWBuilderResources/Target/family");
 
     if (os_family == "linux24" ||

src/libgui/FWObjectSelectionModel.cpp

@@ -30,8 +30,8 @@ using namespace libfwbuilder;
 
 FWObjectSelectionModel::FWObjectSelectionModel()
 {
-    selectedObject = 0;
+    selectedObject = nullptr;
-    selectedObjectOld = 0;
+    selectedObjectOld = nullptr;
 }
 
 void FWObjectSelectionModel::setSelected(FWObject * so, const QModelIndex &index)
@@ -56,5 +56,5 @@ void FWObjectSelectionModel::restore()
 void FWObjectSelectionModel::reset()
 {
     QModelIndex index;
-    setSelected(NULL, index);
+    setSelected(nullptr, index);
 }

src/libgui/FWWindow_editor.cpp

@@ -63,7 +63,7 @@ using namespace libfwbuilder;
  */
 bool FWWindow::isEditorVisible()
 {
-    return oe != NULL && m_mainWindow->editorDockWidget->isVisible() &&
+    return oe != nullptr && m_mainWindow->editorDockWidget->isVisible() &&
         m_mainWindow->editorPanelTabWidget->currentIndex() == EDITOR_PANEL_EDITOR_TAB;
 }
 
@@ -109,7 +109,7 @@ void FWWindow::clearEditorAndSearchPanels()
 {
     findWhereUsedWidget->clear();
     findObjectWidget->clear();
-    if (oe != NULL) oe->blank();
+    if (oe != nullptr) oe->blank();
 }
 
 void FWWindow::openEditorPanel()
@@ -146,7 +146,7 @@ void FWWindow::openEditor(FWObject *obj)
          current_focus_widget &&
          m_mainWindow->editorDockWidget->isAncestorOf(current_focus_widget));
     QLineEdit *line_edit = dynamic_cast<QLineEdit*>(current_focus_widget);
-    bool restore_line_edit_selection = line_edit != NULL && line_edit->hasSelectedText();
+    bool restore_line_edit_selection = line_edit != nullptr && line_edit->hasSelectedText();
 
     if (fwbdebug)
     {
@@ -184,13 +184,13 @@ void FWWindow::openEditor(FWObject *obj)
         qDebug() << "parent firewall:" << parent_fw
                  << QString((parent_fw)? parent_fw->getName().c_str() : "");
 
-    if (parent_fw != NULL)  // this includes Cluster
+    if (parent_fw != nullptr)  // this includes Cluster
     {
         RuleSetView* rsv = activeProject()->getCurrentRuleSetView();
         if (rsv)
         {
-            RuleSet* current_ruleset = NULL;
+            RuleSet* current_ruleset = nullptr;
-            RuleSetModel* md = NULL;
+            RuleSetModel* md = nullptr;
             if (rsv)
             {
                 md = (RuleSetModel*)rsv->model();
@@ -202,10 +202,10 @@ void FWWindow::openEditor(FWObject *obj)
                     activeProject()->m_panel->om->findRuleSetInHistoryByParentFw(
                         parent_fw);
 
-                if (old_rs == NULL)
+                if (old_rs == nullptr)
                     old_rs = parent_fw->getFirstByType(Policy::TYPENAME);
 
-                if (old_rs != NULL)
+                if (old_rs != nullptr)
                     QCoreApplication::postEvent(
                         activeProject(), new openRulesetImmediatelyEvent(
                             activeProject()->getFileName(), old_rs->getId()));
@@ -273,8 +273,8 @@ void FWWindow::buildEditorTitleAndIcon(libfwbuilder::FWObject *obj,
 
     QStringList editor_title;
     FWObject *o = obj;
-    Rule *rule = NULL;
+    Rule *rule = nullptr;
-    FWObject *ruleset = NULL;
+    FWObject *ruleset = nullptr;
     while (o)
     {
         if (Rule::cast(o))

src/libgui/FWWindow_wrappers.cpp

@@ -417,7 +417,7 @@ QString FWWindow::getCurrentFileName()
 RCS * FWWindow::getRCS()
 {
     if (activeProject()) return activeProject()->getRCS();
-    return 0;
+    return nullptr;
 }
 
 /*
@@ -433,14 +433,14 @@ FWObject* FWWindow::getCurrentLib()
 {
     if (activeProject())
         return activeProject()->getCurrentLib();
-    return 0;
+    return nullptr;
 }
 
 FWObject* FWWindow::createObject(const QString &objType,
                                                const QString &objName,
                                                FWObject *copyFrom)
 {
-    FWObject *res = NULL;
+    FWObject *res = nullptr;
     if (activeProject())
     {
         res = activeProject()->createObject(objType, objName, copyFrom);
@@ -453,7 +453,7 @@ FWObject* FWWindow::createObject(FWObject *parent,
                                                const QString &objName,
                                                FWObject *copyFrom)
 {
-    FWObject *res = NULL;
+    FWObject *res = nullptr;
     if (activeProject())
     {
         res =  activeProject()->createObject(parent, objType,
@@ -481,7 +481,7 @@ void FWWindow::moveObject(const QString &targetLibName, FWObject *obj)
 ObjectTreeView* FWWindow::getCurrentObjectTree()
 {
     if (activeProject()) return activeProject()->getCurrentObjectTree();
-    return 0;
+    return nullptr;
 }
 
 void FWWindow::findAllFirewalls (std::list<Firewall *> &fws)
@@ -508,7 +508,7 @@ void FWWindow::unselect()
 FWObjectDatabase* FWWindow::db() 
 { 
     if (activeProject()) return activeProject()->db(); 
-    return NULL;
+    return nullptr;
 }
 
 QString FWWindow::printHeader()

src/libgui/FindObjectWidget.cpp

@@ -140,7 +140,7 @@ void FindObjectWidget::disableAll()
 void FindObjectWidget::objectInserted()
 {
     FWObject *o = m_widget->findDropArea->getObject();
-    if (o == NULL) return;
+    if (o == nullptr) return;
 
 //    disableAll();  // see #1757
 
@@ -160,7 +160,7 @@ void FindObjectWidget::objectInserted()
 
 void FindObjectWidget::reset()
 {
-    lastFound = NULL;
+    lastFound = nullptr;
     lastAttrSearch = "";
     found_objects.clear();
 }
@@ -169,7 +169,7 @@ void FindObjectWidget::clear()
 {
     m_widget->findDropArea->deleteObject();
     m_widget->replaceDropArea->deleteObject();
-    lastFound = NULL;
+    lastFound = nullptr;
     lastAttrSearch = "";
     found_objects.clear();
 }
@@ -283,7 +283,7 @@ bool FindObjectWidget::matchAttr(FWObject *obj)
         }
 
         Address *a = Address::cast(obj);
-        if (a!=NULL)
+        if (a!=nullptr)
         {
             const InetAddr *inet_addr = a->getAddressPtr();
             if (inet_addr)
@@ -301,7 +301,7 @@ bool FindObjectWidget::matchAttr(FWObject *obj)
     }
 
     case 2:   // port
-        if (TCPService::cast(obj)!=NULL || UDPService::cast(obj)!=NULL)
+        if (TCPService::cast(obj)!=nullptr || UDPService::cast(obj)!=nullptr)
         {
             if (m_widget->useRegexp->isChecked())
             {
@@ -332,7 +332,7 @@ bool FindObjectWidget::matchAttr(FWObject *obj)
         break;
 
     case 3:   // protocol num.
-        if (IPService::cast(obj)!=NULL)
+        if (IPService::cast(obj)!=nullptr)
         {
             if (m_widget->useRegexp->isChecked())
             {
@@ -350,7 +350,7 @@ bool FindObjectWidget::matchAttr(FWObject *obj)
         break;
 
     case 4:   // icmp type
-        if (ICMPService::cast(obj)!=NULL)
+        if (ICMPService::cast(obj)!=nullptr)
         {
             if (m_widget->useRegexp->isChecked())
             {
@@ -381,7 +381,7 @@ void FindObjectWidget::_findAll()
     {
         FWObject *o = *treeSeeker;
 
-        if( RuleElement::cast(o->getParent())!=NULL)
+        if( RuleElement::cast(o->getParent())!=nullptr)
         {
             if (m_widget->srScope->currentIndex()==3) // scope == selected firewalls
             {
@@ -398,7 +398,7 @@ void FindObjectWidget::_findAll()
         }
 
         FWObject *obj = o;
-        if (FWReference::cast(o)!=NULL)
+        if (FWReference::cast(o)!=nullptr)
         {
             FWReference *r = FWReference::cast(o);
             obj = r->getPointer();
@@ -435,7 +435,7 @@ void FindObjectWidget::findNext()
     if (m_widget->findAttr->count()>MAX_SEARCH_ITEMS_COUNT)
         m_widget->findAttr->removeItem(0);
 
-    FWObject *o = NULL;
+    FWObject *o = nullptr;
 
     // if scope is "policies of opened firewall" then we need to get 
     // pointer to the currently opened firewall object
@@ -443,7 +443,7 @@ void FindObjectWidget::findNext()
     if (current_rule_set)
         selectedFirewall = Firewall::cast(current_rule_set->getParent());
     else
-        selectedFirewall = NULL;
+        selectedFirewall = nullptr;
 
     if (fwbdebug) qDebug() << "selectedFirewall: " << selectedFirewall;
 
@@ -485,7 +485,7 @@ loop:
     o = *found_objects_iter;
     ++found_objects_iter;
 
-    assert(o!=NULL);
+    assert(o!=nullptr);
     lastFound = o;
 
     if (fwbdebug)
@@ -526,19 +526,19 @@ bool FindObjectWidget::validateReplaceObject()
     }
 
     bool obj_1_address = 
-        Address::cast(findObj)!=NULL ||
+        Address::cast(findObj)!=nullptr ||
-        MultiAddress::cast(findObj)!=NULL ||
+        MultiAddress::cast(findObj)!=nullptr ||
-        ObjectGroup::cast(findObj)!=NULL;
+        ObjectGroup::cast(findObj)!=nullptr;
 
     bool obj_2_address =
-        Address::cast(replObj)!=NULL ||
+        Address::cast(replObj)!=nullptr ||
-        MultiAddress::cast(replObj)!=NULL ||
+        MultiAddress::cast(replObj)!=nullptr ||
-        ObjectGroup::cast(replObj)!=NULL;
+        ObjectGroup::cast(replObj)!=nullptr;
 
     bool obj_1_service =
-        Service::cast(findObj)!=NULL || ServiceGroup::cast(findObj);
+        Service::cast(findObj)!=nullptr || ServiceGroup::cast(findObj);
     bool obj_2_service =
-        Service::cast(replObj)!=NULL || ServiceGroup::cast(replObj);
+        Service::cast(replObj)!=nullptr || ServiceGroup::cast(replObj);
 
     if ((obj_1_address && obj_2_address) || (obj_1_service && obj_2_service))
         return true;
@@ -554,7 +554,7 @@ void FindObjectWidget::replace()
 {
     if (!validateReplaceObject()) return;
 
-    if (lastFound==NULL)
+    if (lastFound==nullptr)
     {
         find();
         return;
@@ -587,9 +587,9 @@ void FindObjectWidget::replaceAll()
         if (current_rule_set)
             selectedFirewall = Firewall::cast(current_rule_set->getParent());
         else
-            selectedFirewall = NULL;
+            selectedFirewall = nullptr;
 
-        if (selectedFirewall == NULL)
+        if (selectedFirewall == nullptr)
         {
             QMessageBox::critical(this,
                                   "Firewall Builder",
@@ -633,8 +633,8 @@ void FindObjectWidget::_replaceCurrent()
     FWObject *o = lastFound;
     FWObject *p = lastFound->getParent();
 
-    if (p==NULL || o==NULL) return;
+    if (p==nullptr || o==nullptr) return;
-    if (FWReference::cast(o)==NULL) return;
+    if (FWReference::cast(o)==nullptr) return;
 
     if (p->isReadOnly())
     {
@@ -679,7 +679,7 @@ void FindObjectWidget::_replaceCurrent()
 
     // check for duplicates --------
 
-    if (RuleElement::cast(new_state)==NULL ||
+    if (RuleElement::cast(new_state)==nullptr ||
         !RuleElement::cast(new_state)->isAny())
     {
         // avoid duplicates
@@ -692,7 +692,7 @@ void FindObjectWidget::_replaceCurrent()
         {
             oo = *j;
             if (cp_id==oo->getId() ||
-                ((ref=FWReference::cast(oo))!=NULL &&
+                ((ref=FWReference::cast(oo))!=nullptr &&
                  cp_id==ref->getPointerId()))
             {
                 // replacement object is already a member of this
@@ -718,8 +718,8 @@ void FindObjectWidget::_replaceCurrent()
 bool FindObjectWidget::inSelectedFirewall( RuleElement* r)
 {
     FWObject *f=r;
-    while (f!=NULL && Firewall::cast(f)==NULL) f=f->getParent();
+    while (f!=nullptr && Firewall::cast(f)==nullptr) f=f->getParent();
-    if (f==NULL) return false;
+    if (f==nullptr) return false;
 
     return selectedFirewall==(Firewall::cast(f));
 }
@@ -750,7 +750,7 @@ void FindObjectWidget::showObject(FWObject* o)
                o->getName().c_str(), o->getParent()->getName().c_str());
 
     FWReference* ref = FWReference::cast(o);
-    if (ref!=NULL && RuleElement::cast(o->getParent())!=NULL)
+    if (ref!=nullptr && RuleElement::cast(o->getParent())!=nullptr)
     {
         // found object in rules
         QCoreApplication::sendEvent(
@@ -760,7 +760,7 @@ void FindObjectWidget::showObject(FWObject* o)
     }
 
     if (!FWBTree().isStandardFolder(o) &&
-        Group::cast(o->getParent())!=NULL &&
+        Group::cast(o->getParent())!=nullptr &&
         !FWBTree().isStandardFolder(o->getParent()))
     {
         QCoreApplication::sendEvent(
@@ -781,7 +781,7 @@ void FindObjectWidget::init()
 
 void FindObjectWidget::firewallOpened(Firewall *f)
 {
-    if (f==NULL) return;
+    if (f==nullptr) return;
     selectedFirewall = f;
     m_widget->srScope->setItemText(
         3, tr("Policy of firewall '")+f->getName().c_str()+"'" );

src/libgui/FindWhereUsedWidget.cpp

@@ -123,7 +123,7 @@ void FindWhereUsedWidget::itemActivated(QTreeWidgetItem* item, int)
 {
     FWObject *container = (FWObject*)(item->data(1, Qt::UserRole).value<void*>());
 
-    if (flShowObject && container!=NULL)
+    if (flShowObject && container!=nullptr)
     {
         showObject(container);
     }
@@ -140,7 +140,7 @@ void FindWhereUsedWidget::itemActivated(QTreeWidgetItem* item, int)
 void FindWhereUsedWidget::itemClicked(QTreeWidgetItem* item, int)
 {
     FWObject *container = (FWObject*)(item->data(1, Qt::UserRole).value<void*>());
-    if (flShowObject && container!=NULL)
+    if (flShowObject && container!=nullptr)
     {
         showObject(container);
     }
@@ -171,7 +171,7 @@ void FindWhereUsedWidget::_find(FWObject *obj)
                  << "  project_panel "
                  << project_panel;
 
-    if (project_panel==NULL) return;
+    if (project_panel==nullptr) return;
 
     FWObjectDatabase *db = obj->getRoot();
     map<int, set<FWObject*> > reference_holders;
@@ -190,7 +190,7 @@ void FindWhereUsedWidget::_find(FWObject *obj)
         foreach(FWObject *container, it->second)
         {
             QTreeWidgetItem *item = createQTWidgetItem(c_obj, container);
-            if (item==NULL) continue;
+            if (item==nullptr) continue;
             QStringList item_str;
             item_str << item->text(0) << item->text(1) << item->text(2);
             widget_items[item_str.join("/")] = item;
@@ -214,7 +214,7 @@ void FindWhereUsedWidget::_find(FWObject *obj)
 
 void FindWhereUsedWidget::init()
 {
-    object = NULL;
+    object = nullptr;
     m_widget->resListView->clear();
     resset.clear();
 }
@@ -234,9 +234,9 @@ void FindWhereUsedWidget::showObject(FWObject* o)
     if (fwbdebug) qDebug("FindWhereUsedWidget::showObject  o=%s (%s)",
                          o->getName().c_str(), o->getTypeName().c_str());
 
-    if (object==NULL || o==NULL) return;
+    if (object==nullptr || o==nullptr) return;
 
-    if (RuleElement::cast(o)!=NULL || RuleElement::cast(o->getParent())!=NULL)
+    if (RuleElement::cast(o)!=nullptr || RuleElement::cast(o->getParent())!=nullptr)
     {
         QCoreApplication::postEvent(
             project_panel,
@@ -244,7 +244,7 @@ void FindWhereUsedWidget::showObject(FWObject* o)
         return;
     }
 
-    if (Rule::cast(o)!=NULL)
+    if (Rule::cast(o)!=nullptr)
     {
         QCoreApplication::postEvent(
             project_panel,
@@ -259,7 +259,7 @@ void FindWhereUsedWidget::showObject(FWObject* o)
 
     project_panel->unselectRules();
 
-    if (Group::cast(o)!=NULL)
+    if (Group::cast(o)!=nullptr)
     {
         QCoreApplication::postEvent(
             project_panel,
@@ -283,26 +283,26 @@ QTreeWidgetItem* FindWhereUsedWidget::createQTWidgetItem(FWObject *o,
                  << "(" << container->getTypeName().c_str() << ")";
 
     QString c1, c2;
-    FWObject *fw = NULL;
+    FWObject *fw = nullptr;
-    Rule *r = NULL;
+    Rule *r = nullptr;
-    RuleSet *rs = NULL;
+    RuleSet *rs = nullptr;
     QPixmap object_icon;
     QPixmap parent_icon;
     FWBTree tree_format;
 
-    if (tree_format.isSystem(container) || Library::cast(container)) return NULL;
+    if (tree_format.isSystem(container) || Library::cast(container)) return nullptr;
 
     // container can be a Rule if user searched for an object used in action
-    if (RuleElement::cast(container)!=NULL || Rule::cast(container)!=NULL)
+    if (RuleElement::cast(container)!=nullptr || Rule::cast(container)!=nullptr)
     {
         fw = container;
-        while (fw!=NULL && Firewall::cast(fw)==NULL) // Firewall::cast matches also Cluster
+        while (fw!=nullptr && Firewall::cast(fw)==nullptr) // Firewall::cast matches also Cluster
         {
             if (Rule::cast(fw)) r = Rule::cast(fw);
             if (RuleSet::cast(fw)) rs = RuleSet::cast(fw);
             fw = fw->getParent();
         }
-        if (fw==NULL || r==NULL || rs==NULL) return NULL;
+        if (fw==nullptr || r==nullptr || rs==nullptr) return nullptr;
 
         c1 = QString::fromUtf8(fw->getName().c_str());
         QString ruleset_kind;
@@ -323,12 +323,12 @@ QTreeWidgetItem* FindWhereUsedWidget::createQTWidgetItem(FWObject *o,
 
         QString rule_element_name;
 
-        if (RuleElement::cast(container)!=NULL)
+        if (RuleElement::cast(container)!=nullptr)
             rule_element_name =
                 getReadableRuleElementName(
                     fw->getStr("platform"), container->getParent()->getTypeName());
 
-        if (Rule::cast(container)!=NULL)
+        if (Rule::cast(container)!=nullptr)
             rule_element_name = "Action";
 
         c2 += tr("%1 \"%2\" / Rule %3 / %4").

src/libgui/FirewallDialog.cpp

@@ -78,7 +78,7 @@ FirewallDialog::FirewallDialog(QWidget *parent) :
 {
     m_dialog = new Ui::FirewallDialog_q;
     m_dialog->setupUi(this);
-    obj=NULL;
+    obj=nullptr;
 
     connectSignalsOfAllWidgetsToSlotChange();
 }
@@ -89,7 +89,7 @@ void FirewallDialog::loadFWObject(FWObject *o)
     {
         obj = o;
         Firewall *s = dynamic_cast<Firewall*>(obj);
-        assert(s!=NULL);
+        assert(s!=nullptr);
 
         init = true;
 
@@ -106,7 +106,7 @@ void FirewallDialog::loadFWObject(FWObject *o)
         updateTimeStamps();
 
         Management *mgmt=s->getManagementObject();
-        assert(mgmt!=NULL);
+        assert(mgmt!=nullptr);
 
 //    FWOptions  *opt =s->getOptionsObject();
 
@@ -239,7 +239,7 @@ void FirewallDialog::validate(bool *res)
     if (m_dialog->obj_name->text().contains("/"))
     {
         *res = false;
-        if (QApplication::focusWidget() != NULL)
+        if (QApplication::focusWidget() != nullptr)
         {
             blockSignals(true);
             QMessageBox::critical(
@@ -309,7 +309,7 @@ void FirewallDialog::applyChanges()
 
     Firewall *s = dynamic_cast<Firewall*>(new_state);
     Management *mgmt = s->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     string old_name = obj->getName();
     string new_name = string(m_dialog->obj_name->text().toUtf8().constData());
@@ -363,7 +363,7 @@ void FirewallDialog::applyChanges()
         QMessageBox::critical(
             this, "Firewall Builder",
             tr("Platform setting can not be empty"),
-            tr("&Continue"), 0, 0,
+            tr("&Continue"), nullptr, nullptr,
             0 );
         return;
     }
@@ -373,7 +373,7 @@ void FirewallDialog::applyChanges()
         QMessageBox::critical(
             this, "Firewall Builder",
             tr("Host OS setting can not be empty"),
-            tr("&Continue"), 0, 0,
+            tr("&Continue"), nullptr, nullptr,
             0 );
         return;
     }
@@ -401,9 +401,9 @@ void FirewallDialog::openFWDialog()
     try
     {
         QWidget *w = DialogFactory::createFWDialog(mw, obj);
-        if (w==NULL)   return;   // some dialogs may not be implemented yet
+        if (w==nullptr)   return;   // some dialogs may not be implemented yet
         QDialog *d=dynamic_cast<QDialog*>(w);
-        assert(d!=NULL);
+        assert(d!=nullptr);
         d->setWindowModality(Qt::WindowModal);
 //        d->open();
         d->exec();
@@ -426,9 +426,9 @@ void FirewallDialog::openOSDialog()
     try
     {
         QWidget *w = DialogFactory::createOSDialog(mw, obj);
-        if (w==NULL)   return;   // some dialogs may not be implemented yet
+        if (w==nullptr)   return;   // some dialogs may not be implemented yet
         QDialog *d=dynamic_cast<QDialog*>(w);
-        assert(d!=NULL);
+        assert(d!=nullptr);
         d->exec();
         delete d;
     }

src/libgui/FirewallInstaller.cpp

@@ -850,7 +850,7 @@ QString FirewallInstaller::getGeneratedFileName(Firewall *fw)
  
 void FirewallInstaller::terminate()
 {
-    if (session != NULL)
+    if (session != nullptr)
     {
         session->terminate();
     }

src/libgui/FirewallInstallerCisco.cpp

@@ -71,7 +71,7 @@ bool FirewallInstallerCisco::packInstallJobsList(Firewall*)
     job_list.clear();
 
     Management *mgmt = cnf->fwobj->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
     PolicyInstallScript *pis = mgmt->getPolicyInstallScript();
     if (pis->getCommand()!="")
     {
@@ -163,7 +163,7 @@ void FirewallInstallerCisco::activatePolicy(const QString&, const QString&)
     packSSHArgs(args);
     if (cnf->verbose) inst_dlg->displayCommand(args);
 
-    SSHCisco *ssh_object = NULL;
+    SSHCisco *ssh_object = nullptr;
     if (cnf->fwobj->getStr("platform")=="pix" ||
         cnf->fwobj->getStr("platform")=="fwsm")
     {

src/libgui/FirewallInstallerJuniper.cpp

@@ -69,7 +69,7 @@ bool FirewallInstallerJuniper::packInstallJobsList(Firewall*)
     job_list.clear();
 
     Management *mgmt = cnf->fwobj->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
     PolicyInstallScript *pis = mgmt->getPolicyInstallScript();
     if (pis->getCommand()!="")
     {

src/libgui/FirewallInstallerProcurve.cpp

@@ -67,7 +67,7 @@ bool FirewallInstallerProcurve::packInstallJobsList(Firewall*)
     job_list.clear();
 
     Management *mgmt = cnf->fwobj->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
     PolicyInstallScript *pis = mgmt->getPolicyInstallScript();
     if (pis->getCommand()!="")
     {
@@ -146,7 +146,7 @@ void FirewallInstallerProcurve::activatePolicy(const QString&, const QString&)
     packSSHArgs(args);
     if (cnf->verbose) inst_dlg->displayCommand(args);
 
-    SSHProcurve *ssh_object = NULL;
+    SSHProcurve *ssh_object = nullptr;
     ssh_object = new SSHProcurve(inst_dlg,
                                  cnf->fwobj->getName().c_str(),
                                  args,

src/libgui/FirewallInstallerUnx.cpp

@@ -76,7 +76,7 @@ bool FirewallInstallerUnx::packInstallJobsList(Firewall* fw)
     inst_dlg->addToLog(QString("Installation plan:\n"));
 
     Management *mgmt = cnf->fwobj->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
     PolicyInstallScript *pis = mgmt->getPolicyInstallScript();
     if (pis->getCommand()!="")
     {

src/libgui/GroupObjectDialog.cpp

@@ -177,9 +177,9 @@ GroupObjectDialog::GroupObjectDialog(QWidget *parent) :
     m_dialog = new Ui::GroupObjectDialog_q;
     m_dialog->setupUi(this);
 
-    obj = NULL;
+    obj = nullptr;
-    selectedObject = NULL;
+    selectedObject = nullptr;
-    new_object_menu = NULL;
+    new_object_menu = nullptr;
 
     listView = new ObjectListView( m_dialog->objectViewsStack, "listView" );
     QStringList sl;
@@ -307,9 +307,9 @@ void GroupObjectDialog::listViewSelectionChanged()
 
 void GroupObjectDialog::iconViewCurrentChanged(QListWidgetItem *itm)
 {
-    if (itm==NULL)
+    if (itm==nullptr)
     {
-        selectedObject=NULL;
+        selectedObject=nullptr;
         return;
     }
     int obj_id = itm->data(Qt::UserRole).toInt();
@@ -320,9 +320,9 @@ void GroupObjectDialog::iconViewCurrentChanged(QListWidgetItem *itm)
 
 void GroupObjectDialog::listViewCurrentChanged(QTreeWidgetItem *itm)
 {
-    if (itm==NULL)
+    if (itm==nullptr)
     {
-        selectedObject=NULL;
+        selectedObject=nullptr;
         return;
     }
     int obj_id = itm->data(0, Qt::UserRole).toInt();
@@ -335,9 +335,9 @@ void GroupObjectDialog::listViewCurrentChanged(QTreeWidgetItem *itm)
  */
 void GroupObjectDialog::insertObject(FWObject *o)
 {
-    assert(o!=NULL);
+    assert(o!=nullptr);
     Group *g = dynamic_cast<Group*>(obj);
-    assert(g!=NULL);
+    assert(g!=nullptr);
 
     if ( ! g->validateChild(o) || g->isReadOnly() ) return;
     // see #1976 do not allow pasting object that has been deleted
@@ -368,7 +368,7 @@ void GroupObjectDialog::addIcon(FWObject *fwo)
 {
     FWObject *o=fwo;
     bool      ref=false;
-    if (FWReference::cast(o)!=NULL)
+    if (FWReference::cast(o)!=nullptr)
     {
         o=FWReference::cast(o)->getPointer();
         ref=true;
@@ -412,7 +412,7 @@ void GroupObjectDialog::loadFWObject(FWObject *o)
 {
     obj = o;
     Group *g = Group::cast(obj);
-    assert(g!=NULL);
+    assert(g!=nullptr);
 
     init=true;
 
@@ -472,7 +472,7 @@ void GroupObjectDialog::loadFWObject(FWObject *o)
     if (new_object_menu)
     {
         new_object_menu->clear();
-        m_dialog->newButton->setMenu(NULL);
+        m_dialog->newButton->setMenu(nullptr);
         delete new_object_menu;
     }
 
@@ -540,7 +540,7 @@ void GroupObjectDialog::applyChanges()
     for (FWObject::iterator j=obj->begin(); j!=obj->end(); ++j)
     {
         FWObject *o = *j;
-        if (FWReference::cast(o)!=NULL) o=FWReference::cast(o)->getPointer();
+        if (FWReference::cast(o)!=nullptr) o=FWReference::cast(o)->getPointer();
         oldobj.insert(o->getId());
     }
 
@@ -622,7 +622,7 @@ void GroupObjectDialog::switchToListView()
 // This method is attached to the context menu item "Edit"
 void GroupObjectDialog::openObject()
 {
-    if (selectedObject!=NULL)
+    if (selectedObject!=nullptr)
     {
         QCoreApplication::postEvent(
             m_project, new showObjectInTreeEvent(selectedObject->getRoot()->getFileName().c_str(),
@@ -657,7 +657,7 @@ void GroupObjectDialog::dropped(QDropEvent *ev)
 
 void GroupObjectDialog::iconContextMenu(const QPoint & pos)
 {
-    FWObject *o = NULL;
+    FWObject *o = nullptr;
     QListWidgetItem *itm = iconView->itemAt(pos);
     if (itm)
     {
@@ -671,7 +671,7 @@ void GroupObjectDialog::iconContextMenu(const QPoint & pos)
 
 void GroupObjectDialog::listContextMenu(const QPoint & pos)
 {
-    FWObject *o=NULL;
+    FWObject *o=nullptr;
     QTreeWidgetItem *itm = listView->itemAt(pos);
     if (itm)
     {
@@ -686,7 +686,7 @@ void GroupObjectDialog::setupPopupMenu(const QPoint &pos)
 {
     QMenu *popup = new QMenu(this);
 
-    if (selectedObject!=NULL)
+    if (selectedObject!=nullptr)
     {
         if (selectedObject->isReadOnly() )
             popup->addAction(tr("Open"), this, SLOT(openObject()));
@@ -699,9 +699,9 @@ void GroupObjectDialog::setupPopupMenu(const QPoint &pos)
     QAction *pasteID = popup->addAction(tr("Paste"), this, SLOT(pasteObj()));
     QAction *delID = popup->addAction(tr("Delete"),this, SLOT(deleteObj()));
 
-    copyID->setEnabled(selectedObject!=NULL &&
+    copyID->setEnabled(selectedObject!=nullptr &&
                           ! FWBTree().isSystem(selectedObject) );
-    cutID->setEnabled(selectedObject!=NULL &&
+    cutID->setEnabled(selectedObject!=nullptr &&
                           ! FWBTree().isSystem(obj) &&
                           ! obj->isReadOnly() );
 
@@ -714,7 +714,7 @@ void GroupObjectDialog::setupPopupMenu(const QPoint &pos)
     pasteID->setEnabled(! FWBTree().isSystem(obj) &&
                         ! obj->isReadOnly() && ! obj_deleted);
 
-    delID->setEnabled(selectedObject!=NULL &&
+    delID->setEnabled(selectedObject!=nullptr &&
                           ! FWBTree().isSystem(obj) &&
                           ! obj->isReadOnly() );
 
@@ -729,7 +729,7 @@ void GroupObjectDialog::copyObj()
     {
         FWObject* selectedObject = m_project->db()->findInIndex(*it);
 
-        if (selectedObject!=NULL && ! FWBTree().isSystem(selectedObject) )
+        if (selectedObject!=nullptr && ! FWBTree().isSystem(selectedObject) )
         {
             FWObjectClipboard::obj_clipboard->add(selectedObject,
                                                   this->m_project );

src/libgui/ICMPServiceDialog.cpp

@@ -57,7 +57,7 @@ ICMPServiceDialog::ICMPServiceDialog(QWidget *parent) :
 {
     m_dialog = new Ui::ICMPServiceDialog_q;
     m_dialog->setupUi(this);
-    obj=NULL;
+    obj=nullptr;
 
     connectSignalsOfAllWidgetsToSlotChange();
 }
@@ -71,7 +71,7 @@ void ICMPServiceDialog::loadFWObject(FWObject *o)
 {
     obj=o;
     ICMPService *s = dynamic_cast<ICMPService*>(obj);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
     // if (ICMP6Service::isA(o))
     // {

src/libgui/IPServiceDialog.cpp

@@ -56,7 +56,7 @@ IPServiceDialog::IPServiceDialog(QWidget *parent) : BaseObjectDialog(parent)
 {
     m_dialog = new Ui::IPServiceDialog_q;
     m_dialog->setupUi(this);
-    obj=NULL;
+    obj=nullptr;
 
     connectSignalsOfAllWidgetsToSlotChange();
 }
@@ -84,7 +84,7 @@ void IPServiceDialog::loadFWObject(FWObject *o)
 {
     obj=o;
     IPService *s = dynamic_cast<IPService*>(obj);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
     init = true;
 

src/libgui/InterfaceDialog.cpp

@@ -81,7 +81,7 @@ InterfaceDialog::InterfaceDialog(QWidget *parent) :
     seclevel->hide();    seclevelLabel->hide();
     netzone->hide();     netzoneLabel->hide();
 */
-    obj=NULL;
+    obj=nullptr;
 
     connectSignalsOfAllWidgetsToSlotChange();
 }
@@ -96,7 +96,7 @@ void InterfaceDialog::loadFWObject(FWObject *o)
 {
     obj=o;
     Interface *s = dynamic_cast<Interface*>(obj);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
     init = true;
 
@@ -345,7 +345,7 @@ void InterfaceDialog::validate(bool *res)
              Interface::cast(obj), obj_name, err))
     {
         *res = false;
-        if (QApplication::focusWidget() != NULL)
+        if (QApplication::focusWidget() != nullptr)
         {
             blockSignals(true);
             QMessageBox::critical(
@@ -379,7 +379,7 @@ void InterfaceDialog::validate(bool *res)
          */
         *res = false;
         // show warning dialog only if app has focus
-        if (QApplication::focusWidget() != NULL)
+        if (QApplication::focusWidget() != nullptr)
         {
             blockSignals(true);
             QMessageBox::critical(
@@ -435,7 +435,7 @@ void InterfaceDialog::applyChanges()
     FWObject* new_state = cmd->getNewState();
 
     Interface *intf = Interface::cast(new_state);
-    assert(intf!=NULL);
+    assert(intf!=nullptr);
 
     string oldname = obj->getName();
     string oldlabel = intf->getLabel();
@@ -526,9 +526,9 @@ void InterfaceDialog::openIfaceDialog()
     try
     {
         QWidget *w = DialogFactory::createIfaceDialog(this, obj);
-        if (w==NULL)   return;   // some dialogs may not be implemented yet
+        if (w==nullptr)   return;   // some dialogs may not be implemented yet
         QDialog *d=dynamic_cast<QDialog*>(w);
-        assert(d!=NULL);
+        assert(d!=nullptr);
         d->exec();
         delete w;
     }

src/libgui/InterfaceEditorWidget.cpp

@@ -43,7 +43,7 @@ InterfaceEditorWidget::InterfaceEditorWidget(QWidget *parent) :
     m_ui(new Ui::InterfaceEditorWidget)
 {
     tabw = dynamic_cast<QTabWidget*>(parent);
-    this->interfacep = NULL;
+    this->interfacep = nullptr;
     m_ui->setupUi(this);
     setClusterMode(false);
     this->m_ui->name->setText(""); // blank interface name
@@ -101,7 +101,7 @@ InterfaceEditorWidget::InterfaceEditorWidget(QWidget *parent,
     clusterMode = true;
     tabw = dynamic_cast<QTabWidget*>(parent);
     m_ui->setupUi(this);
-    this->interfacep = NULL;
+    this->interfacep = nullptr;
     this->m_ui->name->setText(data.name);
     this->m_ui->label->setText(data.label);
 

src/libgui/InterfacesTabWidget.cpp

@@ -72,11 +72,11 @@ QMap<Interface*, EditedInterfaceData> InterfacesTabWidget::getData()
     {
         InterfaceEditorWidget *w = dynamic_cast<InterfaceEditorWidget*>(
             this->widget(i));
-        if (w == NULL || w->getInterface() == NULL)
+        if (w == nullptr || w->getInterface() == nullptr)
             continue;
         InterfaceEditorWidget *intEditor = dynamic_cast<InterfaceEditorWidget*>(
             this->widget(i));
-        if (intEditor != NULL)
+        if (intEditor != nullptr)
             res[intEditor->getInterface()] = intEditor->getInterfaceData();
     }
     return res;
@@ -89,7 +89,7 @@ QList<EditedInterfaceData> InterfacesTabWidget::getNewData()
     {
         InterfaceEditorWidget *w = dynamic_cast<InterfaceEditorWidget*>(
             this->widget(i));
-        if ( w != NULL && w->getInterface() == NULL)
+        if ( w != nullptr && w->getInterface() == nullptr)
             res.append(w->getInterfaceData());
     }
     return res;
@@ -145,7 +145,7 @@ void InterfacesTabWidget::closeTab()
     int idx = this->currentIndex();
     QWidget *w = this->widget(idx);
     Interface *iface = dynamic_cast<InterfaceEditorWidget*>(w)->getInterface() ;
-    if ( iface != NULL ) deleted.append( iface );
+    if ( iface != nullptr ) deleted.append( iface );
     this->removeTab(idx);
     delete w;
     if (this->count() == 0)
@@ -169,7 +169,7 @@ bool InterfacesTabWidget::isValid()
     {
         InterfaceEditorWidget* w = dynamic_cast<InterfaceEditorWidget*>(
             this->widget(i));
-        if (w == NULL) continue;
+        if (w == nullptr) continue;
         if (!w->isValid())
         {
             this->setCurrentWidget(w);
@@ -195,8 +195,8 @@ void InterfacesTabWidget::addInterfaceFromData(InterfaceData* idata)
 
 void InterfacesTabWidget::addTab(QWidget* widget, const QString& title)
 {
-    if ( dynamic_cast<InterfaceEditorWidget*>(widget) != NULL ||
+    if ( dynamic_cast<InterfaceEditorWidget*>(widget) != nullptr ||
-         (noTabs && dynamic_cast<QLabel*>(widget) != NULL))
+         (noTabs && dynamic_cast<QLabel*>(widget) != nullptr))
     {
         widget->setObjectName(title+"_widget");
         if (!noTabs)
@@ -212,7 +212,7 @@ void InterfacesTabWidget::setClusterMode(bool st)
     {
         InterfaceEditorWidget *w = dynamic_cast<InterfaceEditorWidget*>(
             this->widget(i));
-        if (w!=NULL) w->setClusterMode(st);
+        if (w!=nullptr) w->setClusterMode(st);
     }
     newInterface.setVisible(!st);
     delInterface.setVisible(!st);
@@ -232,7 +232,7 @@ void InterfacesTabWidget::setExplanation(const QString& text)
     {
         InterfaceEditorWidget* w = dynamic_cast<InterfaceEditorWidget*>(
             this->widget(i));
-        if (w!=NULL) w->setExplanation(text);
+        if (w!=nullptr) w->setExplanation(text);
     }
 }
 
@@ -243,6 +243,6 @@ void InterfacesTabWidget::setHostOS(const QString &s)
     {
         InterfaceEditorWidget *w = dynamic_cast<InterfaceEditorWidget*>(
             this->widget(i));
-        if (w != NULL) w->setHostOS(host_OS);
+        if (w != nullptr) w->setHostOS(host_OS);
     }
 }

src/libgui/MetricEditorPanel.cpp

@@ -80,12 +80,12 @@ void MetricEditorPanel::applyChanges()
 void MetricEditorPanel::loadFWObject(libfwbuilder::FWObject *obj)
 {
     RoutingRule *r=RoutingRule::cast(obj);
-    if (r==NULL) return;
+    if (r==nullptr) return;
     rule=r;
 
     FWObject *o = r;
-    while (o!=NULL && Firewall::cast(o)==NULL) o=o->getParent();
+    while (o!=nullptr && Firewall::cast(o)==nullptr) o=o->getParent();
-    assert(o!=NULL);
+    assert(o!=nullptr);
 
     m_widget->spin_box->setMinimum( 0);
     m_widget->spin_box->setMaximum( 255);

src/libgui/NetworkDialogIPv6.cpp

@@ -59,7 +59,7 @@ NetworkDialogIPv6::NetworkDialogIPv6(QWidget *parent) : BaseObjectDialog(parent)
 {
     m_dialog = new Ui::NetworkDialogIPv6_q;
     m_dialog->setupUi(this);
-    obj=NULL;
+    obj=nullptr;
 
     connectSignalsOfAllWidgetsToSlotChange();
 }
@@ -70,7 +70,7 @@ void NetworkDialogIPv6::loadFWObject(FWObject *o)
 {
     obj=o;
     NetworkIPv6 *s = dynamic_cast<NetworkIPv6*>(obj);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
     init=true;
 
@@ -111,20 +111,20 @@ void NetworkDialogIPv6::validate(bool *res)
     }
 
     NetworkIPv6 *s = dynamic_cast<NetworkIPv6*>(obj);
-    assert(s != NULL);
+    assert(s != nullptr);
     try
     {
         InetAddr(AF_INET6, m_dialog->address->text().toStdString() );
     } catch (FWException &ex)
     {
         *res = false;
-        if (QApplication::focusWidget() != NULL)
+        if (QApplication::focusWidget() != nullptr)
         {
             blockSignals(true);
             QMessageBox::critical(this, "Firewall Builder",
                                   tr("Illegal IPv6 address '%1'").arg(
                                       m_dialog->address->text()),
-                                  tr("&Continue"), 0, 0,
+                                  tr("&Continue"), nullptr, nullptr,
                                   0 );
             blockSignals(false);
         }
@@ -140,13 +140,13 @@ void NetworkDialogIPv6::validate(bool *res)
     else
     {
         *res = false;
-        if (QApplication::focusWidget() != NULL)
+        if (QApplication::focusWidget() != nullptr)
         {
             blockSignals(true);
             QMessageBox::critical(this, "Firewall Builder",
                                   tr("Illegal netmask '%1'").arg(
                                       m_dialog->netmask->text() ),
-                                  tr("&Continue"), 0, 0,
+                                  tr("&Continue"), nullptr, nullptr,
                                   0 );
             blockSignals(false);
         }
@@ -161,7 +161,7 @@ void NetworkDialogIPv6::applyChanges()
     FWObject* new_state = cmd->getNewState();
 
     NetworkIPv6 *s = dynamic_cast<NetworkIPv6*>(new_state);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
     string oldname=obj->getName();
     new_state->setName( string(m_dialog->obj_name->text().toUtf8().constData()) );

src/libgui/ObjConflictResolutionDialog.cpp

@@ -143,7 +143,7 @@ int ObjConflictResolutionDialog::run(FWObject *o1, FWObject *o2)
     FWObject *delObjLib2 = o2->getRoot()->getById(
         FWObjectDatabase::DELETED_OBJECTS_ID );
 
-    if (delObjLib1!=NULL && o1->isChildOf(delObjLib1))
+    if (delObjLib1!=nullptr && o1->isChildOf(delObjLib1))
     {
         /* This is the case when an object present in the file we are
          * trying to load has been deleted in the tree. We can not
@@ -162,7 +162,7 @@ int ObjConflictResolutionDialog::run(FWObject *o1, FWObject *o2)
                                                                    false,
                                                                    false);
 
-    if (delObjLib2!=NULL && o2->isChildOf(delObjLib2))
+    if (delObjLib2!=nullptr && o2->isChildOf(delObjLib2))
     {
         /* This is the case where object o2 has been deleted in the
          * file we are trying to load but is present in the tree.  One

src/libgui/ObjectEditorDockWidget.cpp

@@ -36,7 +36,7 @@ ObjectEditorDockWidget::ObjectEditorDockWidget(const QString &title,
                                                Qt::WindowFlags flags) :
     QDockWidget(title, parent, flags)
 {
-    editor = NULL;
+    editor = nullptr;
     connect(this, SIGNAL(topLevelChanged(bool)),
             this, SLOT(topLevelChanged(bool)));
 }
@@ -45,7 +45,7 @@ ObjectEditorDockWidget::ObjectEditorDockWidget(QWidget *parent,
                                                Qt::WindowFlags flags) :
     QDockWidget(parent, flags)
 {
-    editor = NULL;
+    editor = nullptr;
     connect(this, SIGNAL(topLevelChanged(bool)),
             this, SLOT(topLevelChanged(bool)));
 }

src/libgui/ObjectIconView.cpp

@@ -57,7 +57,7 @@ using namespace libfwbuilder;
 ObjectIconView::ObjectIconView(QWidget* parent, const char*, Qt::WindowFlags) :
     QListWidget(parent)
 {
-    db = NULL;
+    db = nullptr;
 
     //setWindowFlags(f);
 
@@ -82,16 +82,16 @@ bool ObjectIconView::event(QEvent *event)
 
             //viewportToContents(pos.x(),pos.y(),cx,cy);
 
-            FWObject *obj = NULL;
+            FWObject *obj = nullptr;
             QRect cr;
 
             QListWidgetItem *itm = itemAt( QPoint(cx,cy) );
             QModelIndex ind = indexAt( QPoint(cx,cy) );
-            if (itm==NULL) return false;
+            if (itm==nullptr) return false;
 
             int obj_id = itm->data(Qt::UserRole).toInt();
             obj = db->findInIndex(obj_id);
-            if (obj==NULL) return false;
+            if (obj==nullptr) return false;
 
             cr = rectForIndex(ind);
             cr = QRect(
@@ -119,7 +119,7 @@ QDrag* ObjectIconView::dragObject()
 {
     QListWidgetItem *ivi = currentItem();
     // currentItem returns NULL if the list is empty
-    if (ivi==NULL) return NULL;
+    if (ivi==nullptr) return nullptr;
     int obj_id = ivi->data(Qt::UserRole).toInt();
     FWObject *obj = db->findInIndex(obj_id);
     QString icn =
@@ -170,7 +170,7 @@ void ObjectIconView::dragEnterEvent( QDragEnterEvent *ev)
     for (list<FWObject*>::iterator i=dragol.begin();i!=dragol.end(); ++i)
     {
         FWObject *dragobj = *i;
-        assert(dragobj!=NULL);
+        assert(dragobj!=nullptr);
 
         if (FWBTree().isSystem(dragobj))
         {

src/libgui/ObjectListView.cpp

@@ -58,7 +58,7 @@ using namespace libfwbuilder;
 ObjectListView::ObjectListView(QWidget* parent, const char*, Qt::WindowFlags f) :
     QTreeWidget(parent)
 {
-    db = NULL;
+    db = nullptr;
     setWindowFlags(f);
     /*setColumnWidthMode(0, QTreeWidget::Maximum);
     setColumnWidthMode(1, QTreeWidget::Maximum);
@@ -86,14 +86,14 @@ bool ObjectListView::event(QEvent *event)
 
             //viewportToContents(pos.x(),pos.y(),cx,cy);
 
-            FWObject  *obj=NULL;
+            FWObject  *obj=nullptr;
             QRect      cr;
 
             QTreeWidgetItem *itm = itemAt(QPoint(cx,cy - header()->height()));
-            if (itm==NULL) return false;
+            if (itm==nullptr) return false;
             int obj_id = itm->data(0, Qt::UserRole).toInt();
             obj = db->findInIndex(obj_id);
-            if (obj==NULL) return false;
+            if (obj==nullptr) return false;
 
             cr = visualItemRect(itm);
 
@@ -122,7 +122,7 @@ QDrag* ObjectListView::dragObject()
 {
     QTreeWidgetItem *ovi = currentItem();
     // currentItem returns NULL if the list is empty
-    if (ovi==NULL) return NULL;
+    if (ovi==nullptr) return nullptr;
 
     int obj_id = ovi->data(0, Qt::UserRole).toInt();
     FWObject *obj = db->findInIndex(obj_id);
@@ -183,7 +183,7 @@ void ObjectListView::dragEnterEvent( QDragEnterEvent *ev)
     for (list<FWObject*>::iterator i=dragol.begin();i!=dragol.end(); ++i)
     {
         FWObject *dragobj = *i;
-        assert(dragobj!=NULL);
+        assert(dragobj!=nullptr);
 
         if (FWBTree().isSystem(dragobj))
         {

src/libgui/ObjectListViewItem.cpp

@@ -38,7 +38,7 @@ using namespace libfwbuilder;
 bool ObjectListViewItem::operator< ( const QTreeWidgetItem & other ) const
 {
     QTreeWidget * widget = treeWidget() ;
-    if (widget==NULL) return false;
+    if (widget==nullptr) return false;
 
     int col = widget->sortColumn ();
     if (col==1)
@@ -53,7 +53,7 @@ bool ObjectListViewItem::operator< ( const QTreeWidgetItem & other ) const
 
         ICMPService * ricmp = ICMPService::cast(right);
         ICMPService * licmp = ICMPService::cast(left);
-        if (rtcpudp != NULL && ltcpudp != NULL)
+        if (rtcpudp != nullptr && ltcpudp != nullptr)
         {
             int ls = ltcpudp->getDstRangeStart();
             int rs = rtcpudp->getDstRangeStart();
@@ -73,13 +73,13 @@ bool ObjectListViewItem::operator< ( const QTreeWidgetItem & other ) const
                 return false ;
             }
         }
-        if (rip != NULL && lip != NULL)
+        if (rip != nullptr && lip != nullptr)
         {
             int lpn = lip->getProtocolNumber();
             int rpn = rip->getProtocolNumber();
             return (lpn < rpn);
         }
-        if (ricmp != NULL && licmp != NULL)
+        if (ricmp != nullptr && licmp != nullptr)
         {
             int lpn = licmp->getInt("code");
             int rpn = ricmp->getInt("code");

src/libgui/ObjectManipulator.cpp

@@ -111,7 +111,7 @@ ObjectManipulator::~ObjectManipulator()
 }
 
 ObjectManipulator::ObjectManipulator(QWidget *parent):
-    QWidget(parent), current_tree_view(0)
+    QWidget(parent), current_tree_view(nullptr)
 {
     m_objectManipulator = new Ui::ObjectManipulator_q;
     m_objectManipulator->setupUi(this);
@@ -120,18 +120,18 @@ ObjectManipulator::ObjectManipulator(QWidget *parent):
     libs_model = new ListOfLibrariesModel();
     m_objectManipulator->libs->setModel(libs_model);
 
-    m_project = NULL;
+    m_project = nullptr;
 
     treeWidth    = -1;
     treeHeight   = -1;
     active       = false;
-    current_tree_view=NULL;
+    current_tree_view=nullptr;
     previous_lib_index = -1;
 
     // used in duplicateWithDependencies()
-    dedup_marker_global_counter = time(NULL);
+    dedup_marker_global_counter = time(nullptr);
 
-    popup_menu = NULL;
+    popup_menu = nullptr;
 
 //    buildNewObjectMenu();
 
@@ -148,7 +148,7 @@ vector<QTreeWidget*> ObjectManipulator::getTreeWidgets()
     for (int i=0; i<libs_model->rowCount(); ++i)
     {
         QTreeWidget *objTreeView = libs_model->getTreeWidget(i);
-        if (objTreeView == NULL) continue;
+        if (objTreeView == nullptr) continue;
         res.push_back(objTreeView);
     }
     return res;
@@ -165,7 +165,7 @@ void ObjectManipulator::showDeletedObjects(bool f)
             qDebug("ObjectManipulator::showDeletedObjects f=%d  dobj=%p",
                    f, dobj);
 
-        if (dobj==NULL)
+        if (dobj==nullptr)
         {
             dobj = m_project->db()->create(Library::TYPENAME);
             dobj->setId(FWObjectDatabase::DELETED_OBJECTS_ID);
@@ -193,7 +193,7 @@ void ObjectManipulator::showDeletedObjects(bool f)
             if (fwbdebug)
                 qDebug("ObjectManipulator::showDeletedObjects otv=%p", otv);
 
-            assert(otv!=NULL);
+            assert(otv!=nullptr);
             m_objectManipulator->widgetStack->removeWidget( otv );
             removeLib(idx.row());
         }
@@ -212,7 +212,7 @@ QString ObjectManipulator::getStandardName(FWObject *parent,
 {
     QStringList names;
     FWObject *po = parent;
-    while (po!=NULL)
+    while (po!=nullptr)
     {
         names.push_front(QString::fromUtf8(po->getName().c_str()));
         if (Host::cast(po)) break;
@@ -236,7 +236,7 @@ void ObjectManipulator::switchingTrees(QWidget* w)
     if (!new_otv)
         return;//assert(new_otv)
 
-    if (current_tree_view!=NULL) current_tree_view->becomingHidden();
+    if (current_tree_view!=nullptr) current_tree_view->becomingHidden();
     new_otv->becomingVisible();
     current_tree_view = new_otv;
 }
@@ -404,9 +404,9 @@ static void addKeywordsMenu(ObjectManipulator *om, QMenu *menu)
 
 void ObjectManipulator::addSubfolderActions(QList<QAction*> &AddObjectActions, FWObject *currentObj, ObjectTreeViewItem *item, bool &addSubfolder)
 {
-    addSubfolder = item != 0;
+    addSubfolder = item != nullptr;
     string path;
-    if (currentObj == NULL) {
+    if (currentObj == nullptr) {
         path = item->getUserFolderParent()->getPath(true);
     }
     else {
@@ -414,7 +414,7 @@ void ObjectManipulator::addSubfolderActions(QList<QAction*> &AddObjectActions, F
     }
 
     //Do not allow to create subfolders on real objects
-    if(item==0 && (currentObj!=NULL
+    if(item==nullptr && (currentObj!=nullptr
                       &&!Firewall::isA(currentObj)
                       &&!Cluster::isA(currentObj)
                       &&!IPv4::isA(currentObj)
@@ -555,7 +555,7 @@ void ObjectManipulator::contextMenuRequested(const QPoint &pos)
     QList<QAction*>::iterator iter;
     QList<QAction*> AddObjectActions;
     bool addSubfolder = false;
-    if (popup_menu == NULL)
+    if (popup_menu == nullptr)
     {
         popup_menu = new QMenu(this);
         popup_menu->setObjectName("objectTreeContextMenu");
@@ -565,7 +565,7 @@ void ObjectManipulator::contextMenuRequested(const QPoint &pos)
 /* in extended selection mode there may be several selected items */
 
     ObjectTreeView *objTreeView = getCurrentObjectTree();
-    if (objTreeView == NULL) return;
+    if (objTreeView == nullptr) return;
 
     QTreeWidgetItem *item = objTreeView->itemAt(pos);//clicked item
 
@@ -574,13 +574,13 @@ void ObjectManipulator::contextMenuRequested(const QPoint &pos)
                getCurrentObjectTree()->getNumSelected());
 
     ObjectTreeViewItem *otvi=dynamic_cast<ObjectTreeViewItem*>(item);
-    if (otvi==NULL)  return;  // happens when user clicks outside an item
+    if (otvi==nullptr)  return;  // happens when user clicks outside an item
 
     lastClickedItem = otvi;
 
     FWObject *obj = otvi->getFWObject();
-    if (obj == 0) {
+    if (obj == nullptr) {
-        assert(otvi->getUserFolderParent() != 0);
+        assert(otvi->getUserFolderParent() != nullptr);
         QAction *action =
             popup_menu->addAction(tr("Delete"), this, SLOT(removeUserFolder()));
         /* The user-defined folder doesn't get counted as a selected obj */
@@ -588,7 +588,7 @@ void ObjectManipulator::contextMenuRequested(const QPoint &pos)
             action->setEnabled(false);
         }
 
-        addSubfolderActions(AddObjectActions, NULL, otvi, addSubfolder);
+        addSubfolderActions(AddObjectActions, nullptr, otvi, addSubfolder);
 
         for (iter=AddObjectActions.begin(); iter!=AddObjectActions.end(); iter++)
             (*iter)->setEnabled(true);
@@ -626,14 +626,14 @@ void ObjectManipulator::contextMenuRequested(const QPoint &pos)
     if (RuleSet::cast(currentObj))
         popup_menu->addAction(tr("Open"), this, SLOT( openSelectedRuleSet()));
 
-    QMenu *duptargets  = NULL;
+    QMenu *duptargets  = nullptr;
-    QAction *dupID = NULL;
+    QAction *dupID = nullptr;
-    QMenu *movetargets = NULL;
+    QMenu *movetargets = nullptr;
     int moveTargetsCounter = 0;
 
     if (!Interface::isA(currentObj) &&
         !physAddress::isA(currentObj) && 
-        RuleSet::cast(currentObj)==NULL &&
+        RuleSet::cast(currentObj)==nullptr &&
         !Library::isA(currentObj) &&
         !FWBTree().isStandardFolder(currentObj))
     {
@@ -662,7 +662,7 @@ void ObjectManipulator::contextMenuRequested(const QPoint &pos)
         {
             QModelIndex idx = libs_model->index(row, 0);
             FWObject *lib = libs_model->getLibrary(idx);
-            if (lib == NULL) continue;
+            if (lib == nullptr) continue;
             if ( lib->getId()==FWObjectDatabase::STANDARD_LIB_ID ||
                  lib->getId()==FWObjectDatabase::DELETED_OBJECTS_ID  ||
                  lib->isReadOnly())
@@ -779,16 +779,16 @@ void ObjectManipulator::contextMenuRequested(const QPoint &pos)
              * object to an interface.
              */
             FWObject *att = currentObj->getFirstByType(AttachedNetworks::TYPENAME);
-            if (att == NULL)
+            if (att == nullptr)
                 addNewObjectMenuItem(popup_menu, AttachedNetworks::TYPENAME);
 
 
             // Check if we should add menu item that creates failover
             // group. if parent is a cluster, allow one vrrp type
             // FailoverClusterGroup per Interface only
-            FWObject *parent = NULL;
+            FWObject *parent = nullptr;
             parent = currentObj->getParent();
-            if (parent != NULL && Cluster::isA(parent))
+            if (parent != nullptr && Cluster::isA(parent))
             {
                 QAction *failover_menu_id = addNewObjectMenuItem(
                     popup_menu, FailoverClusterGroup::TYPENAME);
@@ -797,7 +797,7 @@ void ObjectManipulator::contextMenuRequested(const QPoint &pos)
                 //     SLOT( newFailoverClusterGroup() ) );
                 failover_menu_id->setEnabled(
                     currentObj->getFirstByType(
-                        FailoverClusterGroup::TYPENAME) == NULL);
+                        FailoverClusterGroup::TYPENAME) == nullptr);
             }
         }
 
@@ -816,7 +816,7 @@ void ObjectManipulator::contextMenuRequested(const QPoint &pos)
         }
 
 
-        addSubfolderActions(AddObjectActions, currentObj, NULL, addSubfolder);
+        addSubfolderActions(AddObjectActions, currentObj, nullptr, addSubfolder);
 
         if (addSubfolder) {
             QAction *action =
@@ -846,8 +846,8 @@ void ObjectManipulator::contextMenuRequested(const QPoint &pos)
 
     addKeywordsMenu(this, popup_menu);
 
-    if (Firewall::cast(currentObj)!=NULL ||
+    if (Firewall::cast(currentObj)!=nullptr ||
-        (ObjectGroup::cast(currentObj)!=NULL &&
+        (ObjectGroup::cast(currentObj)!=nullptr &&
          currentObj->getName()=="Firewalls"))
     {
         bool canCreateCluster = true;
@@ -870,11 +870,11 @@ void ObjectManipulator::contextMenuRequested(const QPoint &pos)
         popup_menu->addAction( tr("Inspect"), this, SLOT( inspect()));
     }
 
-    if (Interface::cast(currentObj)!=NULL)
+    if (Interface::cast(currentObj)!=nullptr)
     {
         popup_menu->addSeparator();
         FWObject *h = Host::getParentHost(currentObj);
-        if (h != NULL) {
+        if (h != nullptr) {
             list<FWObject*> top_level_interfaces = h->getByType(Interface::TYPENAME);
             top_level_interfaces.sort(FWObjectNameCmpPredicate());
             addSubinterfaceSubmenu(popup_menu, top_level_interfaces);
@@ -1006,7 +1006,7 @@ bool ObjectManipulator::getDeleteMenuState(FWObject *obj)
         Firewall *fw = Firewall::cast(obj->getParent());
         // fw can be NULL if this ruleset is in the Deleted objects
         // library
-        if (fw==NULL) return del_menu_item_state;
+        if (fw==nullptr) return del_menu_item_state;
         list<FWObject*> child_objects = fw->getByType(obj->getTypeName());
         if (child_objects.size()==1) del_menu_item_state = false;
     }
@@ -1024,7 +1024,7 @@ void ObjectManipulator::getMenuState(bool haveMoveTargets,
 {
     inDeletedObjects = false;
 
-    if (m_project->db() == NULL)
+    if (m_project->db() == nullptr)
     {
         dupMenuItem = false;
         moveMenuItem = false;
@@ -1047,13 +1047,13 @@ void ObjectManipulator::getMenuState(bool haveMoveTargets,
 
     FWObject *current_library = getCurrentLib();
 
-    if (getCurrentObjectTree()==NULL) return;
+    if (getCurrentObjectTree()==nullptr) return;
 
     // delete, cut and copy menu items will be enabled only if all
     // selected objects have the same parent (so user can not select
     // an interface and one but not all of its addresses for deletion,
     // see #1676)
-    FWObject *parent = NULL;
+    FWObject *parent = nullptr;
     vector<FWObject*> so = getCurrentObjectTree()->getSelectedObjects();
     for (vector<FWObject*>::iterator i=so.begin();  i!=so.end(); ++i)
     {
@@ -1061,7 +1061,7 @@ void ObjectManipulator::getMenuState(bool haveMoveTargets,
 
         QString object_path = obj->getPath(true).c_str();
 
-        if (parent == NULL) parent = obj->getParent();
+        if (parent == nullptr) parent = obj->getParent();
         else
         {
             if (parent != obj->getParent())
@@ -1087,7 +1087,7 @@ void ObjectManipulator::getMenuState(bool haveMoveTargets,
             FWObjectClipboard::obj_clipboard &&
             (FWObjectClipboard::obj_clipboard->size()!=0);
         delMenuItem = delMenuItem && getDeleteMenuState(obj);
-        delMenuItem = delMenuItem && current_library != NULL &&
+        delMenuItem = delMenuItem && current_library != nullptr &&
             current_library->getId() != FWObjectDatabase::STANDARD_LIB_ID;
 
 #if DISABLE_PASTE_MENU_ITEM_IF_PASTE_IS_ILLEGAL
@@ -1122,7 +1122,7 @@ void ObjectManipulator::getMenuState(bool haveMoveTargets,
         dupMenuItem=
             (dupMenuItem && ! FWBTree().isStandardFolder(obj) && ! Library::isA(obj) );
 
-        inDeletedObjects = (del_obj_library!=NULL && obj->isChildOf(del_obj_library));
+        inDeletedObjects = (del_obj_library!=nullptr && obj->isChildOf(del_obj_library));
         dupMenuItem = dupMenuItem && !inDeletedObjects;
 
 // can't move system objects or libraries
@@ -1184,7 +1184,7 @@ void ObjectManipulator::filterFirewallsFromSelection(vector<FWObject*> &so,
     for (vector<FWObject*>::iterator i=so.begin();  i!=so.end(); ++i)
     {
         cl = Cluster::cast(*i);
-        if (cl != NULL)
+        if (cl != nullptr)
         {
             list<Firewall*> members;
             cl->getMembersList(members);
@@ -1201,13 +1201,13 @@ void ObjectManipulator::filterFirewallsFromSelection(vector<FWObject*> &so,
             continue;
         }
         fw = Firewall::cast(*i);
-        if (fw!=NULL)
+        if (fw!=nullptr)
         {
             fo.insert(fw);
             continue;
         }
         gr = ObjectGroup::cast(*i);
-        if (gr!=NULL)
+        if (gr!=nullptr)
         {
             extractFirewallsFromGroup(gr,fo);
         }
@@ -1247,7 +1247,7 @@ FWObject* ObjectManipulator::prepareForInsertion(FWObject *target, FWObject *obj
             "&Continue", QString::null, QString::null,
             0, 1 );
 
-        return NULL;
+        return nullptr;
     }
     return ta;
 }
@@ -1257,16 +1257,16 @@ void ObjectManipulator::editSelectedObject()
     if (fwbdebug) qDebug("ObjectManipulator::editSelectedObject");
 
     ObjectTreeView *objTreeView = getCurrentObjectTree();
-    if (objTreeView == NULL) return;
+    if (objTreeView == nullptr) return;
     if (objTreeView->getNumSelected()==0) return;
 
     FWObject *obj = getCurrentObjectTree()->getSelectedObjects().front();
-    if (obj==NULL) return;
+    if (obj==nullptr) return;
 
     // do not edit system folders (#1729)
     if (FWBTree().isSystem(obj)) return;
 
-    if (RuleSet::cast(obj)!=NULL)
+    if (RuleSet::cast(obj)!=nullptr)
     {
         // Open rule set object in the editor if it is already opened
         // in RuleSetView. If we just opened it in RuleSetView, check
@@ -1300,9 +1300,9 @@ void ObjectManipulator::openSelectedRuleSet()
     if (getCurrentObjectTree()->getNumSelected()==0) return;
 
     FWObject *obj = getCurrentObjectTree()->getSelectedObjects().front();
-    if (obj==NULL) return;
+    if (obj==nullptr) return;
 
-    if (RuleSet::cast(obj)!=NULL && m_project->getCurrentRuleSet()!=obj)
+    if (RuleSet::cast(obj)!=nullptr && m_project->getCurrentRuleSet()!=obj)
         QCoreApplication::postEvent(
             m_project, new openRulesetEvent(m_project->getFileName(), obj->getId()));
 }
@@ -1326,7 +1326,7 @@ bool ObjectManipulator::switchObjectInEditor(FWObject *obj)
             qDebug("in editor: %s", edt_obj->getName().c_str());
     }
 
-    if (RuleSet::cast(obj)!=NULL)
+    if (RuleSet::cast(obj)!=nullptr)
     {
         if (obj!=m_project->getCurrentRuleSet())
         {
@@ -1364,14 +1364,14 @@ void ObjectManipulator::selectionChanged(QTreeWidgetItem *cur)
         qDebug("ObjectManipulator::selectionChanged");
 
     QTreeWidget *qlv = getCurrentObjectTree();
-    if (qlv==NULL) return;
+    if (qlv==nullptr) return;
 
     ObjectTreeViewItem* otvi = dynamic_cast<ObjectTreeViewItem*>(cur);
 
-    if (otvi==NULL) return;
+    if (otvi==nullptr) return;
 
     FWObject *obj = otvi->getFWObject();
-    if (obj==NULL) return;
+    if (obj==nullptr) return;
 
     if (fwbdebug) qDebug("ObjectManipulator::selectionChanged obj=%s",
                          obj->getName().c_str());
@@ -1426,13 +1426,13 @@ void ObjectManipulator::openObjectInTree(FWObject *obj, bool /*register_in_histo
                  << "obj:" << ((obj)?obj->getName().c_str():"NULL")
                  << "id:" << ((obj)?obj->getId():0);
 
-    if (obj==NULL) return;
+    if (obj==nullptr) return;
 
     openLibForObject(obj);
 
     //raise();
     FWObject *o=obj;
-    if (FWReference::cast(o)!=NULL) o=FWReference::cast(o)->getPointer();
+    if (FWReference::cast(o)!=nullptr) o=FWReference::cast(o)->getPointer();
 
     ObjectTreeViewItem *otvi = allItems[o];
     // this changes selection and thus calls slot slectionChanged
@@ -1477,7 +1477,7 @@ void ObjectManipulator::showObjectInTree(ObjectTreeViewItem *otvi)
 {
     if (fwbdebug)
         qDebug("ObjectManipulator::showObjectInTree");
-    if (otvi==NULL) return;
+    if (otvi==nullptr) return;
 
     ObjectTreeView* otv = otvi->getTree();
 
@@ -1502,7 +1502,7 @@ void ObjectManipulator::libChangedById(int obj_id)
     {
         QModelIndex idx = libs_model->index(i, 0);
         FWObject *l = libs_model->getLibrary(idx);
-        if (l == NULL) continue;
+        if (l == nullptr) continue;
         if (l->getId() == obj_id)
         {
             libChanged(i);
@@ -1517,21 +1517,21 @@ FWObject* ObjectManipulator::getNextUserLib(FWObject *after_this)
     QString sid2 = "syslib000";
     QString sid3 = "syslib001";
 
-    FWObject *lib = NULL;
+    FWObject *lib = nullptr;
-    if (after_this != NULL) lib = after_this->getLibrary();
+    if (after_this != nullptr) lib = after_this->getLibrary();
 
     for (int i=0; i<libs_model->rowCount(); ++i)
     {
         QModelIndex idx = libs_model->index(i, 0);
         FWObject *l = libs_model->getLibrary(idx);
-        if (l == NULL) continue;
+        if (l == nullptr) continue;
         if (l == lib) continue;
         QString sid1 = FWObjectDatabase::getStringId(l->getId()).c_str();
         if ( sid1 == sid2 || sid1 == sid3) continue;
 
         return l;
     }
-    return NULL;
+    return nullptr;
 }
 
 void ObjectManipulator::libChanged(int list_row)
@@ -1541,7 +1541,7 @@ void ObjectManipulator::libChanged(int list_row)
     previous_lib_index = list_row;
 
     QTreeWidget *objTreeView = libs_model->getTreeWidget(list_row);
-    if (objTreeView == NULL)
+    if (objTreeView == nullptr)
     {
         if (fwbdebug)
         {
@@ -1562,7 +1562,7 @@ void ObjectManipulator::libChanged(int list_row)
     }
 
     ObjectTreeViewItem *otvi = dynamic_cast<ObjectTreeViewItem*>(objTreeView->currentItem());
-    if (otvi == NULL)
+    if (otvi == nullptr)
     {
         if (objTreeView->invisibleRootItem()->childCount() > 0)
             otvi = dynamic_cast<ObjectTreeViewItem*>(
@@ -1579,7 +1579,7 @@ void ObjectManipulator::libChanged(int list_row)
 void ObjectManipulator::updateCreateObjectMenu(FWObject* lib)
 {
     bool f = (
-        lib == NULL ||
+        lib == nullptr ||
         lib->getId()==FWObjectDatabase::TEMPLATE_LIB_ID ||
         lib->getId()==FWObjectDatabase::DELETED_OBJECTS_ID  ||
         lib->isReadOnly()
@@ -1594,7 +1594,7 @@ void ObjectManipulator::updateCreateObjectMenu(FWObject* lib)
 FWObject* ObjectManipulator::getCurrentLib()
 {
     int idx = m_objectManipulator->libs->currentIndex();
-    if (idx == -1 ) return NULL;
+    if (idx == -1 ) return nullptr;
 
     FWObject *lib = libs_model->getLibrary(idx);
 
@@ -1628,7 +1628,7 @@ void ObjectManipulator::select()
                  << "currentObj=" << currentObj
                  << ((currentObj)?currentObj->getName().c_str():" [unknown] ");
 
-    if (currentObj==NULL) return;
+    if (currentObj==nullptr) return;
 
     m_objectManipulator->libs->setCurrentIndex(
         libs_model->getIdxForLib(currentObj->getLibrary()).row());
@@ -1646,12 +1646,12 @@ void ObjectManipulator::select()
 void ObjectManipulator::unselect()
 {
     FWObject *currentObj = getSelectedObject();
-    if (currentObj==NULL) return;
+    if (currentObj==nullptr) return;
 
     for (int i=0; i<libs_model->rowCount(); ++i)
     {
         QTreeWidget *otv = libs_model->getTreeWidget(i);
-        if (otv == NULL) continue;
+        if (otv == nullptr) continue;
 
         otv->clearSelection();
     }
@@ -1705,7 +1705,7 @@ void ObjectManipulator::simulateInstall()
     for (vector<FWObject*>::iterator i=so.begin();  i!=so.end(); ++i)
     {
         fw= Firewall::cast( *i );
-        if (fw!=NULL)
+        if (fw!=nullptr)
         {
             fw->updateLastCompiledTimestamp();
             fw->updateLastInstalledTimestamp();
@@ -1721,7 +1721,7 @@ FWObject* ObjectManipulator::getSelectedObject()
         ObjectTreeViewItem* otvi = dynamic_cast<ObjectTreeViewItem*>(cur);
         return otvi->getFWObject();
     }
-    return NULL;
+    return nullptr;
 }
 
 void ObjectManipulator::reopenCurrentItemParent()
@@ -1741,7 +1741,7 @@ void ObjectManipulator::loadSectionSizes()
     {
         QTreeWidget *objTreeView = libs_model->getTreeWidget(i);
         FWObject *lib = libs_model->getLibrary(i);
-        if (lib == NULL || objTreeView == NULL) continue;
+        if (lib == nullptr || objTreeView == nullptr) continue;
 
         objTreeView->header()->resizeSection(
             0,
@@ -1760,7 +1760,7 @@ void ObjectManipulator::saveSectionSizes()
     {
         QTreeWidget *objTreeView = libs_model->getTreeWidget(i);
         FWObject *lib = libs_model->getLibrary(i);
-        if (lib == NULL || objTreeView == NULL) continue;
+        if (lib == nullptr || objTreeView == nullptr) continue;
 
         st->setTreeSectionSize(
             m_project->getFileName(), lib->getName().c_str(), 0,
@@ -1781,7 +1781,7 @@ void ObjectManipulator::loadExpandedTreeItems()
 
         ObjectTreeView *objTreeView = libs_model->getTreeWidget(i);
         FWObject *lib = libs_model->getLibrary(i);
-        if (lib == NULL || objTreeView == NULL) continue;
+        if (lib == nullptr || objTreeView == nullptr) continue;
 
         set<int> expanded_objects;
         st->getExpandedObjectIds(m_project->getFileName(),
@@ -1800,7 +1800,7 @@ void ObjectManipulator::saveExpandedTreeItems()
     {
         ObjectTreeView *objTreeView = libs_model->getTreeWidget(i);
         FWObject *lib = libs_model->getLibrary(i);
-        if (lib == NULL || objTreeView == NULL) continue;
+        if (lib == nullptr || objTreeView == nullptr) continue;
 
         st->setExpandedObjectIds(m_project->getFileName(),
                                  lib->getName().c_str(),
@@ -1813,7 +1813,7 @@ void ObjectManipulator::setAttributesColumnEnabled(bool)
     for (int i=0; i<libs_model->rowCount(); ++i)
     {
         ObjectTreeView *objTreeView = libs_model->getTreeWidget(i);
-        if (objTreeView == NULL) continue;
+        if (objTreeView == nullptr) continue;
         objTreeView->showOrHideAttributesColumn();
     }
 }

src/libgui/ObjectManipulator_create_new.cpp

@@ -140,7 +140,7 @@ QAction* ObjectManipulator::addNewObjectMenuItem(QMenu *menu,
 void ObjectManipulator::createNewObject()
 {
     const QAction *action = dynamic_cast<const QAction*>(sender());
-    assert(action!=NULL);
+    assert(action!=nullptr);
     QVariant v = action->data();
     if (!v.isValid()) return;
 
@@ -156,13 +156,13 @@ void ObjectManipulator::createNewObject()
         qDebug() << "ObjectManipulator::createNewObject()"
                  << "type:" << type_name
                  << "add_to_group_id:" << add_to_group_id;
-    FWObject *new_obj = NULL;
+    FWObject *new_obj = nullptr;
 
     if (!isObjectAllowed(type_name)) return;
 
     QString descr = FWBTree().getTranslatableObjectTypeName(type_name);
     // FWCmdMacro should be used for commands grouping
-    FWCmdMacro* macro = 0;
+    FWCmdMacro* macro = nullptr;
     if (add_to_group_id == -1)
         macro = new FWCmdMacro(
             FWBTree().getTranslatableNewObjectMenuText(type_name));
@@ -179,7 +179,7 @@ void ObjectManipulator::createNewObject()
         if (type_name ==  Firewall::TYPENAME) new_obj = newFirewall(macro);
         if (type_name ==  Cluster::TYPENAME) new_obj = newCluster(macro);
         if (type_name ==  Host::TYPENAME) new_obj = newHost(macro);
-        if (new_obj == NULL)
+        if (new_obj == nullptr)
         {
             delete macro;
             return;
@@ -198,9 +198,9 @@ void ObjectManipulator::createNewObject()
     //if (type_name ==  Routing::TYPENAME) new_obj = newRoutingRuleSet();
     if (type_name ==  AttachedNetworks::TYPENAME) new_obj = newAttachedNetworks(macro);
 
-    if (new_obj == NULL) new_obj = createObject(type_name, descr, NULL, macro);
+    if (new_obj == nullptr) new_obj = createObject(type_name, descr, nullptr, macro);
 
-    if (new_obj == NULL)
+    if (new_obj == nullptr)
     {
         delete macro;
         return;
@@ -236,7 +236,7 @@ void ObjectManipulator::createNewObject()
         m_project, new expandObjectInTreeEvent(
             m_project->getFileName(), new_obj->getId()));
 
-    if (Firewall::cast(new_obj)!=NULL)  // Cluster too
+    if (Firewall::cast(new_obj)!=nullptr)  // Cluster too
     {
         FWObject *ruleset = new_obj->getFirstByType(Policy::TYPENAME);
         if (ruleset)
@@ -249,7 +249,7 @@ void ObjectManipulator::createNewObject()
     list<FWObject*> newObjs;
     newObjs.push_back(new_obj);
     moveItems(lastClickedItem, newObjs);
-    lastClickedItem = NULL;
+    lastClickedItem = nullptr;
 
     m_project->undoStack->push(macro);
 }
@@ -258,13 +258,13 @@ void ObjectManipulator::newFirewallSlot()
 {
     QString descr = FWBTree().getTranslatableObjectTypeName(Firewall::TYPENAME);
     // FWCmdMacro should be used for commands grouping
-    FWCmdMacro* macro = 0;
+    FWCmdMacro* macro = nullptr;
     macro = new FWCmdMacro(
         FWBTree().getTranslatableNewObjectMenuText(Firewall::TYPENAME));
 
     FWObject *new_obj = newFirewall(macro);
 
-    if (new_obj == NULL)
+    if (new_obj == nullptr)
     {
         delete macro;
         return;
@@ -332,7 +332,7 @@ FWObject* ObjectManipulator::createObject(const QString &objType,
 
     FWObject *parent = FWBTree().getStandardSlotForObject(lib, objType);
 
-    if (parent==NULL)
+    if (parent==nullptr)
     {
       QMessageBox::warning(this,"Firewall Builder",
                            QObject::tr(
@@ -342,7 +342,7 @@ FWObject* ObjectManipulator::createObject(const QString &objType,
                            .arg(objType),
                            "&Continue", QString::null, QString::null,
                            0, 1 );
-      return NULL;
+      return nullptr;
     }
 
     return actuallyCreateObject(parent, objType, objName, copyFrom, macro);
@@ -357,7 +357,7 @@ FWObject* ObjectManipulator::createObject(FWObject *parent,
     FWObject *lib  = getCurrentLib();
     int       i = 0;
 
-    assert(parent!=NULL);
+    assert(parent!=nullptr);
 
     if (fwbdebug)
     {
@@ -385,7 +385,7 @@ FWObject* ObjectManipulator::createObject(FWObject *parent,
         i++;
     }
 
-    if (parent==NULL) parent=lib;
+    if (parent==nullptr) parent=lib;
 
     return actuallyCreateObject(parent, objType, objName, copyFrom, macro);
 }
@@ -396,11 +396,11 @@ FWObject* ObjectManipulator::actuallyCreateObject(FWObject *parent,
                                                   FWObject *copyFrom,
                                                   QUndoCommand* macro)
 {
-    FWObject *nobj=NULL;
+    FWObject *nobj=nullptr;
-    if (!isTreeReadWrite(this, parent)) return NULL;
+    if (!isTreeReadWrite(this, parent)) return nullptr;
     nobj = m_project->db()->create(objType.toLatin1().constData());
-    assert(nobj!=NULL);
+    assert(nobj!=nullptr);
-    if (copyFrom!=NULL) nobj->duplicate(copyFrom, true);
+    if (copyFrom!=nullptr) nobj->duplicate(copyFrom, true);
     if (nobj->isReadOnly()) nobj->setReadOnly(false);
 
     QString new_name = makeNameUnique(parent, objName, objType);
@@ -448,7 +448,7 @@ FWObject* ObjectManipulator::newLibrary(QUndoCommand* macro)
     // At this point new library is already inserted into the object tree
     // but it has not been added to the QTreeWidget yet.
     FWCmdAddLibrary *cmd = new FWCmdAddLibrary(
-        m_project, m_project->db(), NULL, QObject::tr("Create library"), macro);
+        m_project, m_project->db(), nullptr, QObject::tr("Create library"), macro);
     FWObject *new_state = cmd->getNewState();
     m_project->db()->remove(nlib, false);
     new_state->add(nlib);
@@ -463,10 +463,10 @@ FWObject* ObjectManipulator::newLibrary(QUndoCommand* macro)
 FWObject* ObjectManipulator::newPolicyRuleSet(QUndoCommand* macro)
 {
     FWObject *currentObj = getSelectedObject();
-    if ( currentObj->isReadOnly() ) return NULL;
+    if ( currentObj->isReadOnly() ) return nullptr;
     QString name = "Policy";
     Firewall * fw = Firewall::cast(currentObj);
-    if (fw!=NULL)
+    if (fw!=nullptr)
     {
         int count = 0;
         for (FWObjectTypedChildIterator it = fw->findByType(Policy::TYPENAME);it != it.end(); ++it)
@@ -477,7 +477,7 @@ FWObject* ObjectManipulator::newPolicyRuleSet(QUndoCommand* macro)
             name+=QString().setNum(count);
         }
     }
-    FWObject *o = createObject(currentObj, Policy::TYPENAME, name, NULL, macro);
+    FWObject *o = createObject(currentObj, Policy::TYPENAME, name, nullptr, macro);
     this->getCurrentObjectTree()->sortItems(0, Qt::AscendingOrder);
     return o;
 }
@@ -485,10 +485,10 @@ FWObject* ObjectManipulator::newPolicyRuleSet(QUndoCommand* macro)
 FWObject* ObjectManipulator::newNATRuleSet(QUndoCommand* macro)
 {
     FWObject *currentObj = getSelectedObject();
-    if ( currentObj->isReadOnly() ) return NULL;
+    if ( currentObj->isReadOnly() ) return nullptr;
     QString name = "NAT";
     Firewall * fw = Firewall::cast(currentObj);
-    if (fw!=NULL)
+    if (fw!=nullptr)
     {
         int count = 0;
         for (FWObjectTypedChildIterator it = fw->findByType(NAT::TYPENAME);
@@ -500,7 +500,7 @@ FWObject* ObjectManipulator::newNATRuleSet(QUndoCommand* macro)
             name += QString().setNum(count);
         }
     }
-    FWObject *o = createObject(currentObj, NAT::TYPENAME, name, NULL, macro);
+    FWObject *o = createObject(currentObj, NAT::TYPENAME, name, nullptr, macro);
     this->getCurrentObjectTree()->sortItems(0, Qt::AscendingOrder);
     return o;
 }
@@ -521,10 +521,10 @@ FWObject* ObjectManipulator::newFirewall(QUndoCommand* macro)
     FWObject *nfw = nfd->getNewFirewall();
     delete nfd;
 
-    if (nfw!=NULL)
+    if (nfw!=nullptr)
     {
         FWCmdAddObject *cmd = new FWCmdAddObject(
-            m_project, parent, NULL, QObject::tr("Create new Firewall"), macro);
+            m_project, parent, nullptr, QObject::tr("Create new Firewall"), macro);
         FWObject *new_state = cmd->getNewState();
 
         parent->remove(nfw, false);
@@ -559,7 +559,7 @@ FWObject* ObjectManipulator::newCluster(QUndoCommand* macro, bool fromSelected)
             fwvector.push_back(FWObject::cast(fw));
         ncd->setFirewallList(fwvector);
     }
-    if ( ncd->exec() != QDialog::Accepted) return NULL;
+    if ( ncd->exec() != QDialog::Accepted) return nullptr;
 
     FWObject *ncl = ncd->getNewCluster();
     delete ncd;
@@ -570,7 +570,7 @@ FWObject* ObjectManipulator::newCluster(QUndoCommand* macro, bool fromSelected)
             qDebug() << "ObjectManipulator::newCluster checkpoint 1";
 
         FWCmdAddObject *cmd = new FWCmdAddObject(
-            m_project, parent, NULL, QObject::tr("Create new Cluster"), macro);
+            m_project, parent, nullptr, QObject::tr("Create new Cluster"), macro);
         // newCluster dialog may create backup copies of member firewalls,
         // to see them in the tree need to reload it.
         cmd->setNeedTreeReload(true);
@@ -591,7 +591,7 @@ void ObjectManipulator::newClusterFromSelected()
     FWCmdMacro* macro = new FWCmdMacro(
         FWBTree().getTranslatableNewObjectMenuText(Cluster::TYPENAME));
     FWObject *ncl = newCluster(macro, true);
-    if (ncl == NULL)
+    if (ncl == nullptr)
     {
         delete macro;
         return;
@@ -602,11 +602,11 @@ void ObjectManipulator::newClusterFromSelected()
 FWObject* ObjectManipulator::newClusterIface(QUndoCommand* macro)
 {
     FWObject *currentObj = getSelectedObject();
-    if ( currentObj->isReadOnly() ) return NULL;
+    if ( currentObj->isReadOnly() ) return nullptr;
     QString new_name = makeNameUnique(currentObj,
                                       findNewestInterfaceName(currentObj),
                                       Interface::TYPENAME);
-    return createObject(currentObj, Interface::TYPENAME, new_name, NULL, macro);
+    return createObject(currentObj, Interface::TYPENAME, new_name, nullptr, macro);
 }
 
 /*
@@ -617,13 +617,13 @@ FWObject* ObjectManipulator::newClusterIface(QUndoCommand* macro)
 FWObject* ObjectManipulator::newStateSyncClusterGroup(QUndoCommand* macro)
 {
     FWObject *currentObj = getSelectedObject();
-    if ( currentObj->isReadOnly() ) return NULL;
+    if ( currentObj->isReadOnly() ) return nullptr;
 
-    FWObject *o = NULL;
+    FWObject *o = nullptr;
 
     FWObject *cluster = currentObj;
     while (cluster && !Cluster::isA(cluster)) cluster = cluster->getParent();
-    assert(cluster != NULL);
+    assert(cluster != nullptr);
     QString host_os = cluster->getStr("host_OS").c_str();
 
     list<QStringPair> lst;
@@ -635,13 +635,13 @@ FWObject* ObjectManipulator::newStateSyncClusterGroup(QUndoCommand* macro)
             this,"Firewall Builder",
             tr("Cluster host OS %1 does not support state synchronization").arg(host_os),
             "&Continue", QString::null, QString::null, 0, 1 );
-        return NULL;
+        return nullptr;
     }
 
     QString group_type = lst.front().first;
 
     o = createObject(currentObj, StateSyncClusterGroup::TYPENAME,
-                     tr("State Sync Group"), NULL, macro);
+                     tr("State Sync Group"), nullptr, macro);
     o->setStr("type", group_type.toStdString());
     return o;
 }
@@ -654,9 +654,9 @@ FWObject* ObjectManipulator::newStateSyncClusterGroup(QUndoCommand* macro)
 FWObject* ObjectManipulator::newFailoverClusterGroup(QUndoCommand* macro)
 {
     FWObject *currentObj = getSelectedObject();
-    if ( currentObj->isReadOnly() ) return NULL;
+    if ( currentObj->isReadOnly() ) return nullptr;
 
-    FWObject *o = NULL;
+    FWObject *o = nullptr;
 
     QString group_type;
     if (Interface::isA(currentObj))
@@ -665,11 +665,11 @@ FWObject* ObjectManipulator::newFailoverClusterGroup(QUndoCommand* macro)
     } else
     {
         qWarning("newClusterGroup: invalid currentObj");
-        return NULL;
+        return nullptr;
     }
 
     o = createObject(currentObj, FailoverClusterGroup::TYPENAME,
-                     tr("Failover group"), NULL, macro);
+                     tr("Failover group"), nullptr, macro);
     o->setStr("type", group_type.toStdString());
     return o;
 }
@@ -681,12 +681,12 @@ FWObject* ObjectManipulator::newFailoverClusterGroup(QUndoCommand* macro)
 FWObject* ObjectManipulator::newAttachedNetworks(QUndoCommand* macro)
 {
     FWObject *currentObj = getSelectedObject();
-    if ( currentObj->isReadOnly() ) return NULL;
+    if ( currentObj->isReadOnly() ) return nullptr;
 
     if (Interface::isA(currentObj))
     {
         FWObject *no = createObject(currentObj, AttachedNetworks::TYPENAME,
-                                    tr("Attached Networks"), NULL, macro);
+                                    tr("Attached Networks"), nullptr, macro);
         FWObject *parent_host = Host::getParentHost(currentObj);
         string name = parent_host->getName() +
             ":" + currentObj->getName() + ":attached";
@@ -695,7 +695,7 @@ FWObject* ObjectManipulator::newAttachedNetworks(QUndoCommand* macro)
     } else
     {
         qWarning("newAttachedNetworks: invalid currentObj");
-        return NULL;
+        return nullptr;
     }
 }
 
@@ -710,10 +710,10 @@ FWObject* ObjectManipulator::newHost(QUndoCommand* macro)
     FWObject *o = nhd->getNewHost();
     delete nhd;
 
-    if (o!=NULL)
+    if (o!=nullptr)
     {
         FWCmdAddObject *cmd = new FWCmdAddObject(
-            m_project, parent, NULL, QObject::tr("Create new Host"), macro);
+            m_project, parent, nullptr, QObject::tr("Create new Host"), macro);
         FWObject *new_state = cmd->getNewState();
         parent->remove(o, false);
         new_state->add(o);
@@ -743,10 +743,10 @@ QString ObjectManipulator::findNewestInterfaceName(FWObject *parent)
 FWObject* ObjectManipulator::newInterface(QUndoCommand* macro)
 {
     FWObject *currentObj = getSelectedObject();
-    if ( currentObj->isReadOnly() ) return NULL;
+    if ( currentObj->isReadOnly() ) return nullptr;
 
-    Interface *new_interface = NULL;
+    Interface *new_interface = nullptr;
-    FWObject *parent = NULL;
+    FWObject *parent = nullptr;
 
     // Note that Firewall::cast matches Firewall and Cluster
     if (Host::isA(currentObj) || Firewall::cast(currentObj))
@@ -769,19 +769,19 @@ FWObject* ObjectManipulator::newInterface(QUndoCommand* macro)
         }
     }
 
-    if (parent == NULL)
+    if (parent == nullptr)
     {
         // since we can;t find quitable parent for the new interface,
         // we can't create it.
-        return NULL;
+        return nullptr;
     }
 
     QString new_name = makeNameUnique(parent, findNewestInterfaceName(parent),
                                       Interface::TYPENAME);
     new_interface = Interface::cast(
-        createObject(parent, Interface::TYPENAME, new_name, NULL, macro));
+        createObject(parent, Interface::TYPENAME, new_name, nullptr, macro));
 
-    if (new_interface == NULL) return NULL;
+    if (new_interface == nullptr) return nullptr;
 
     if (Interface::isA(parent))
     {
@@ -801,49 +801,49 @@ FWObject* ObjectManipulator::newInterface(QUndoCommand* macro)
 FWObject* ObjectManipulator::newInterfaceAddress(QUndoCommand* macro)
 {
     FWObject *currentObj = getSelectedObject();
-    if ( currentObj->isReadOnly() ) return NULL;
+    if ( currentObj->isReadOnly() ) return nullptr;
 
     if (Interface::isA(currentObj))
     {
         Interface *intf = Interface::cast(currentObj);
         if (intf &&
             (intf->isDyn() || intf->isUnnumbered() || intf->isBridgePort())
-        ) return NULL;
+        ) return nullptr;
         QString iname = getStandardName(currentObj, IPv4::TYPENAME, "ip");
         iname = makeNameUnique(currentObj, iname, IPv4::TYPENAME);
-        return createObject(currentObj, IPv4::TYPENAME, iname, NULL, macro);
+        return createObject(currentObj, IPv4::TYPENAME, iname, nullptr, macro);
     }
     // if current object is not interface, create address in the standard folder
     return createObject(IPv4::TYPENAME,
                         FWBTree().getTranslatableObjectTypeName(IPv4::TYPENAME),
-                        NULL, macro);
+                        nullptr, macro);
 }
 
 FWObject* ObjectManipulator::newInterfaceAddressIPv6(QUndoCommand* macro)
 {
     FWObject *currentObj = getSelectedObject();
-    if ( currentObj->isReadOnly() ) return NULL;
+    if ( currentObj->isReadOnly() ) return nullptr;
 
     if (Interface::isA(currentObj))
     {
         Interface *intf = Interface::cast(currentObj);
         if (intf &&
             (intf->isDyn() || intf->isUnnumbered() || intf->isBridgePort())
-        ) return NULL;
+        ) return nullptr;
         QString iname = getStandardName(currentObj, IPv4::TYPENAME, "ipv6");
         iname = makeNameUnique(currentObj, iname, IPv4::TYPENAME);
-        return createObject(currentObj, IPv6::TYPENAME, iname, NULL, macro);
+        return createObject(currentObj, IPv6::TYPENAME, iname, nullptr, macro);
     }
     // if current object is not interface, create address in the standard folder
     return createObject(IPv6::TYPENAME,
                         FWBTree().getTranslatableObjectTypeName(IPv6::TYPENAME),
-                        NULL, macro);
+                        nullptr, macro);
 }
 
 FWObject* ObjectManipulator::newPhysicalAddress(QUndoCommand* macro)
 {
     FWObject *currentObj = getSelectedObject();
-    if ( currentObj->isReadOnly() ) return NULL;
+    if ( currentObj->isReadOnly() ) return nullptr;
 
     if (Interface::isA(currentObj))
     {
@@ -854,10 +854,10 @@ FWObject* ObjectManipulator::newPhysicalAddress(QUndoCommand* macro)
                 .arg(QString::fromUtf8(currentObj->getParent()->getName().c_str()))
                 .arg(QString::fromUtf8(currentObj->getName().c_str()));
             return createObject(currentObj, physAddress::TYPENAME, iname,
-                                NULL, macro);
+                                nullptr, macro);
         }
     }
-    return NULL;
+    return nullptr;
 }
 
 void ObjectManipulator::reminderAboutStandardLib()

src/libgui/ObjectManipulator_ops.cpp

@@ -91,10 +91,10 @@ void ObjectManipulator::autoRenameChildren(FWObject *obj,
     if (oldName == QString::fromUtf8(obj->getName().c_str())) return;
     
     QTreeWidgetItem *itm = allItems[obj];
-    assert(itm!=NULL);
+    assert(itm!=nullptr);
     
     if ((QString::fromUtf8(obj->getName().c_str())!=oldName) &&
-        (Host::isA(obj) || Firewall::cast(obj)!=NULL || Interface::isA(obj)))
+        (Host::isA(obj) || Firewall::cast(obj)!=nullptr || Interface::isA(obj)))
     {
         autorename(obj);
     }
@@ -105,7 +105,7 @@ void ObjectManipulator::autorename(FWObject *obj)
     if (fwbdebug)
         qDebug() << "ObjectManipulator::autorename  obj=" << obj->getName().c_str();
 
-    if (Host::isA(obj) || Firewall::cast(obj)!=NULL || Cluster::isA(obj))
+    if (Host::isA(obj) || Firewall::cast(obj)!=nullptr || Cluster::isA(obj))
     {
         list<FWObject*> il = obj->getByType(Interface::TYPENAME);
         for (list<FWObject*>::iterator i=il.begin(); i!=il.end(); ++i)
@@ -179,7 +179,7 @@ void ObjectManipulator::autorenameVlans(list<FWObject*> &obj_list)
         FWObject *obj = *j;
         FWObject *parent = obj->getParent();
         FWObject *fw = parent;
-        while (fw && Firewall::cast(fw)==NULL) fw = fw->getParent();
+        while (fw && Firewall::cast(fw)==nullptr) fw = fw->getParent();
         assert(fw);
         QString obj_name = QString::fromUtf8(obj->getName().c_str());
 
@@ -216,24 +216,24 @@ void ObjectManipulator::autorenameVlans(list<FWObject*> &obj_list)
 
 FWObject* ObjectManipulator::duplicateObject(FWObject *targetLib, FWObject *obj)
 {
-    if (!isTreeReadWrite(this, targetLib)) return NULL;
+    if (!isTreeReadWrite(this, targetLib)) return nullptr;
 
     // we disable copy/cut/paste/duplicate menu items for objects that
     // can't be copied or duplicated in
     // ObjectManipulator::getMenuState() but will check here just in
     // case
-    if (AttachedNetworks::isA(obj)) return NULL;
+    if (AttachedNetworks::isA(obj)) return nullptr;
 
     openLib(targetLib);
     FWObject *new_parent = FWBTree().getStandardSlotForObject(
         targetLib, obj->getTypeName().c_str());
-    if (new_parent == NULL) new_parent = obj->getParent();
+    if (new_parent == nullptr) new_parent = obj->getParent();
     QString newName =
         makeNameUnique(new_parent,
                        QString::fromUtf8(obj->getName().c_str()),
                        obj->getTypeName().c_str());
 
-    if (!isObjectAllowed(new_parent, obj)) return NULL;
+    if (!isObjectAllowed(new_parent, obj)) return nullptr;
 
     return createObject(obj->getTypeName().c_str(), newName, obj);
 }
@@ -243,7 +243,7 @@ void ObjectManipulator::moveObject(FWObject *targetLib, FWObject *obj)
     FWObject *cl=getCurrentLib();
     if (cl==targetLib) return;
 
-    FWObject *grp = NULL;
+    FWObject *grp = nullptr;
 
     if (FWObjectDatabase::isA(targetLib)) grp = targetLib;
     else
@@ -251,7 +251,7 @@ void ObjectManipulator::moveObject(FWObject *targetLib, FWObject *obj)
         grp = FWBTree().getStandardSlotForObject(
             targetLib, obj->getTypeName().c_str());
     }
-    if (grp==NULL) grp=targetLib;
+    if (grp==nullptr) grp=targetLib;
 
     if (!grp->isReadOnly())
     {
@@ -301,15 +301,15 @@ FWObject* ObjectManipulator::actuallyPasteTo(FWObject *target,
     //FWObject *res = NULL;
 
     FWObject *ta = prepareForInsertion(target, obj);
-    if (ta == NULL) return NULL;
+    if (ta == nullptr) return nullptr;
 
-    if (!isObjectAllowed(ta, obj)) return NULL;
+    if (!isObjectAllowed(ta, obj)) return nullptr;
 
     // we disable copy/cut/paste/duplicate menu items for objects that
     // can't be copied or duplicated in
     // ObjectManipulator::getMenuState() but will check here just in
     // case
-    if (AttachedNetworks::isA(obj)) return NULL;
+    if (AttachedNetworks::isA(obj)) return nullptr;
 
     if (fwbdebug)
         qDebug() << "ObjectManipulator::actuallyPasteTo"
@@ -326,7 +326,7 @@ FWObject* ObjectManipulator::actuallyPasteTo(FWObject *target,
         {
             if (fwbdebug) qDebug("Copy object %s (%d) to a different object tree",
                                  obj->getName().c_str(), obj->getId());
-            FWCmdAddObject *cmd = new FWCmdAddObject(m_project, target, NULL,
+            FWCmdAddObject *cmd = new FWCmdAddObject(m_project, target, nullptr,
                                                      QObject::tr("Paste object"));
             FWObject *new_state = cmd->getNewState();
             cmd->setNeedTreeReload(true);
@@ -343,7 +343,7 @@ FWObject* ObjectManipulator::actuallyPasteTo(FWObject *target,
         }
 
         Group *grp = Group::cast(ta);
-        if (grp!=NULL && !FWBTree().isSystem(ta))
+        if (grp!=nullptr && !FWBTree().isSystem(ta))
         {
             if (fwbdebug) qDebug("Copy object %s (%d) to a regular group",
                                  obj->getName().c_str(), obj->getId());
@@ -356,7 +356,7 @@ FWObject* ObjectManipulator::actuallyPasteTo(FWObject *target,
                 if(cp_id==o1->getId()) return o1;
 
                 FWReference *ref;
-                if( (ref=FWReference::cast(o1))!=NULL &&
+                if( (ref=FWReference::cast(o1))!=nullptr &&
                     cp_id==ref->getPointerId()) return o1;
             }
             FWCmdChange *cmd = new FWCmdChange(
@@ -379,7 +379,7 @@ FWObject* ObjectManipulator::actuallyPasteTo(FWObject *target,
                        obj->getName().c_str(), obj->getId());
 
             FWObject *nobj = m_project->db()->create(obj->getTypeName());
-            assert(nobj!=NULL);
+            assert(nobj!=nullptr);
             //nobj->ref();
             nobj->duplicate(obj, true);
             if (new_name != nobj->getName().c_str())
@@ -417,7 +417,7 @@ FWObject* ObjectManipulator::actuallyPasteTo(FWObject *target,
             0, 1 );
     }
 
-    return NULL;
+    return nullptr;
 }
 
 void ObjectManipulator::lockObject()
@@ -510,7 +510,7 @@ void ObjectManipulator::deleteObject(FWObject *obj, QUndoCommand* macro)
     FWObject *deleted_objects_lib = m_project->db()->findInIndex(
         FWObjectDatabase::DELETED_OBJECTS_ID );
 
-    if (deleted_objects_lib == NULL)
+    if (deleted_objects_lib == nullptr)
     {
         FWObject *dobj = m_project->db()->createLibrary();
         dobj->setId(FWObjectDatabase::DELETED_OBJECTS_ID);
@@ -529,8 +529,8 @@ void ObjectManipulator::deleteObject(FWObject *obj, QUndoCommand* macro)
         obj->getId() == FWObjectDatabase::DELETED_OBJECTS_ID) return;
     
     bool is_library = Library::isA(obj);
-    bool is_firewall = Firewall::cast(obj) != NULL; // includes Cluster too
+    bool is_firewall = Firewall::cast(obj) != nullptr; // includes Cluster too
-    bool is_deleted_object = (deleted_objects_lib!=NULL && obj->isChildOf(deleted_objects_lib));
+    bool is_deleted_object = (deleted_objects_lib!=nullptr && obj->isChildOf(deleted_objects_lib));
 
     // ruleset_visible == true if 1) we delete firewall object and one of its
     // rulesets is visible in the project panel, or 2) we delete ruleset object
@@ -568,7 +568,7 @@ void ObjectManipulator::deleteObject(FWObject *obj, QUndoCommand* macro)
                 obj,
                 QString("Delete object"),
                 macro);
-            if (macro==0)
+            if (macro==nullptr)
                 m_project->undoStack->push(cmd);
             return;
         }
@@ -622,7 +622,7 @@ void ObjectManipulator::actuallyDeleteObject(FWObject *obj, QUndoCommand* macro)
         QString("Delete object"),
         macro);
 
-    if (macro == 0)
+    if (macro == nullptr)
         m_project->undoStack->push(cmd);
 }
 
@@ -645,11 +645,11 @@ void ObjectManipulator::groupObjects()
         QString libName = ngd.m_dialog->libs->currentText();
 
         QString type = ObjectGroup::TYPENAME;
-        if (Service::cast(co)!=NULL)  type=ServiceGroup::TYPENAME;
+        if (Service::cast(co)!=nullptr)  type=ServiceGroup::TYPENAME;
-        if (Interval::cast(co)!=NULL) type=IntervalGroup::TYPENAME;
+        if (Interval::cast(co)!=nullptr) type=IntervalGroup::TYPENAME;
 
-        FWObject *parent = NULL;
+        FWObject *parent = nullptr;
-        FWObject *newgrp = NULL;
+        FWObject *newgrp = nullptr;
 
         list<FWObject*> ll = m_project->db()->getByType( Library::TYPENAME );
         for (FWObject::iterator i=ll.begin(); i!=ll.end(); i++)
@@ -663,7 +663,7 @@ void ObjectManipulator::groupObjects()
  */
                 if (lib->isReadOnly()) return;
                 parent = FWBTree().getStandardSlotForObject(lib,type);
-                if (parent==NULL)
+                if (parent==nullptr)
                 {
                     if (fwbdebug)
                         qDebug("ObjectManipulator::groupObjects(): could not find standard slot for object of type %s in library %s",
@@ -676,7 +676,7 @@ void ObjectManipulator::groupObjects()
                 break;
             }
         }
-        if (newgrp==NULL) return;
+        if (newgrp==nullptr) return;
 
         FWCmdAddObject *cmd = new FWCmdAddObject(
             m_project, parent, newgrp, QObject::tr("Create new group"));
@@ -718,14 +718,14 @@ static void doKeyword(vector<FWObject *> objs, bool doAdd,
 
 void ObjectManipulator::addNewKeywordSlot()
 {
-    QString keyword = QInputDialog::getText(0, tr("Add New Keyword"),
+    QString keyword = QInputDialog::getText(nullptr, tr("Add New Keyword"),
                           tr("Enter new keyword to add to selected objects"));
     keyword = keyword.simplified();
     if (fwbdebug) {
         qDebug() << "ObjectManipulator::addNewKeyword: " << keyword;
     }
 
-    if (!KeywordsDialog::validateKeyword(0, keyword)) return;
+    if (!KeywordsDialog::validateKeyword(nullptr, keyword)) return;
 
     doKeyword(getCurrentObjectTree()->getSelectedObjects(), true, 
               keyword.toUtf8().constData(), m_project);
@@ -735,7 +735,7 @@ void ObjectManipulator::addNewKeywordSlot()
 void ObjectManipulator::processKeywordSlot()
 {
     const QObject *qObj = sender();
-    if (qObj == 0) return;
+    if (qObj == nullptr) return;
     const QAction *qAct = dynamic_cast<const QAction *>(qObj);
     QStringList list = qAct->data().toStringList();
     if (list.size() != 2) return;
@@ -752,12 +752,12 @@ void ObjectManipulator::processKeywordSlot()
 void ObjectManipulator::addSubfolderSlot()
 {
     const QAction *qAct = dynamic_cast<const QAction *>(sender());
-    if (qAct == 0) return;
+    if (qAct == nullptr) return;
 
     FWObject *obj = getCurrentObjectTree()->getCurrentObject();
     assert(obj->getId() == qAct->data().toInt());
 
-    QString folder = QInputDialog::getText(0, tr("Add Subfolder"),
+    QString folder = QInputDialog::getText(nullptr, tr("Add Subfolder"),
                                            tr("Enter new subfolder name"));
     folder = folder.simplified();
     if (folder.isEmpty()) return;
@@ -791,10 +791,10 @@ void ObjectManipulator::removeUserFolder()
 {
     ObjectTreeViewItem *item = dynamic_cast<ObjectTreeViewItem *>
         (getCurrentObjectTree()->currentItem());
-    if (item == 0 || item->getUserFolderParent() == 0) return;
+    if (item == nullptr || item->getUserFolderParent() == nullptr) return;
     ObjectTreeViewItem *parent = dynamic_cast<ObjectTreeViewItem *>
         (item->parent());
-    assert(parent != 0);
+    assert(parent != nullptr);
 
     vector<FWObject *> objs;
     for (int ii = 0; ii < item->childCount(); ii++) {
@@ -826,7 +826,7 @@ void ObjectManipulator::removeUserFolder()
     while (!children.isEmpty()) {
         ObjectTreeViewItem *child = dynamic_cast<ObjectTreeViewItem *>
             (children.takeFirst());
-        assert(child != 0);
+        assert(child != nullptr);
 
         FWObject *obj = child->getFWObject();
         if (mw->isEditorVisible() && mw->getOpenedEditor() == obj) {

src/libgui/ObjectManipulator_slots.cpp

@@ -73,7 +73,7 @@ void ObjectManipulator::undeleteLibrary()
     if (getCurrentObjectTree()->getNumSelected()==0) return;
 
     FWObject *obj = getCurrentObjectTree()->getSelectedObjects().front();
-    if (obj==NULL) return;
+    if (obj==nullptr) return;
 
     // check that obj is in Deleted objects library. We do not show menu item
     // "Undelete" if it isnt, but will double check anyway
@@ -88,7 +88,7 @@ void ObjectManipulator::undeleteLibrary()
             obj,
             reference_holders,
             QString("Undelete library object"),
-            0);
+            nullptr);
         m_project->undoStack->push(cmd);
     }
 }
@@ -185,11 +185,11 @@ void ObjectManipulator::pasteObj()
 {
     if (getCurrentObjectTree()->getNumSelected()==0) return;
     FWObject *target_object = getCurrentObjectTree()->getSelectedObjects().front();
-    if (target_object==NULL) return;
+    if (target_object==nullptr) return;
 
     vector<std::pair<int,ProjectPanel*> >::iterator i;
     int idx = 0;
-    FWObject *last_object = NULL;
+    FWObject *last_object = nullptr;
     Q_UNUSED(last_object);
     map<int,int> map_ids;
     if (fwbdebug)
@@ -254,7 +254,7 @@ void ObjectManipulator::duplicateObj(QAction *action)
     ObjectTreeView* ot=getCurrentObjectTree();
     ot->freezeSelection(true);
     FWObject *obj;
-    FWObject *nobj = NULL;
+    FWObject *nobj = nullptr;
     vector<FWObject*> so = getCurrentObjectTree()->getSimplifiedSelection();
     for (vector<FWObject*>::iterator i=so.begin();  i!=so.end(); ++i)
     {
@@ -356,7 +356,7 @@ void ObjectManipulator::dumpObj()
     if (getCurrentObjectTree()->getNumSelected()==0) return;
 
     FWObject *obj=getCurrentObjectTree()->getSelectedObjects().front();
-    if (obj==NULL) return;
+    if (obj==nullptr) return;
     obj->dump(true,false);
 }
 
@@ -416,7 +416,7 @@ void ObjectManipulator::find()
     if (getCurrentObjectTree()->getNumSelected()==0) return;
 
     FWObject *obj=getCurrentObjectTree()->getSelectedObjects().front();
-    if (obj==NULL) return;
+    if (obj==nullptr) return;
     m_project->setFDObject(obj);
 }
 
@@ -425,7 +425,7 @@ void ObjectManipulator::findObject()
     if (getCurrentObjectTree()->getNumSelected()==0) return;
 
     FWObject *obj=getCurrentObjectTree()->getSelectedObjects().front();
-    if (obj==NULL) return;
+    if (obj==nullptr) return;
     mw->findObject( obj );
 }
 
@@ -434,7 +434,7 @@ void ObjectManipulator::findWhereUsedSlot()
     if (getCurrentObjectTree()->getNumSelected()==0) return;
 
     FWObject *obj = getCurrentObjectTree()->getSelectedObjects().front();
-    if (obj==NULL) return;
+    if (obj==nullptr) return;
     mw->findWhereUsed(obj, m_project);
 
 }
@@ -443,7 +443,7 @@ void ObjectManipulator::makeSubinterface(QAction *act)
 {
     int intf_id = act->data().toInt();
     FWObject *new_parent_interface = m_project->db()->findInIndex(intf_id);
-    assert(new_parent_interface!=NULL);
+    assert(new_parent_interface!=nullptr);
 
     if (getCurrentObjectTree()->getNumSelected()==0) return;
 
@@ -474,7 +474,7 @@ void ObjectManipulator::makeSubinterface(QAction *act)
             obj,
             reference_holders,
             QString("Make an interface a subinterface"),
-            0);
+            nullptr);
         m_project->undoStack->push(cmd);
     }
 

src/libgui/ObjectManipulator_tree_ops.cpp

@@ -183,7 +183,7 @@ void ObjectManipulator::expandObjectInTree(FWObject *obj)
     //if (FWReference::cast(o)!=NULL) o = FWReference::cast(o)->getPointer();
 
     QTreeWidgetItem *it = allItems[o];
-    if (it==NULL)
+    if (it==nullptr)
     {
         if (fwbdebug) qDebug() << "####  Tree node not found";
         return;
@@ -196,7 +196,7 @@ void ObjectManipulator::expandOrCollapseCurrentTreeNode(QTreeWidgetItem *item,
                                                         bool expand)
 {
     QTreeWidgetItem *parent = item->parent();
-    if (expand && parent != NULL && ! parent->isExpanded())
+    if (expand && parent != nullptr && ! parent->isExpanded())
         parent->setExpanded(true);
 
     item->setExpanded(expand);
@@ -224,14 +224,14 @@ static ObjectTreeViewItem *findUserFolder(ObjectTreeViewItem *parent,
 {
     if (folder.isEmpty()) return parent;
 
-    ObjectTreeViewItem *otvi = 0;
+    ObjectTreeViewItem *otvi = nullptr;
 
     int childNo = 0;
-    while(parent->child(childNo) != NULL && otvi == 0) {
+    while(parent->child(childNo) != nullptr && otvi == nullptr) {
         ObjectTreeViewItem *sub =
             dynamic_cast<ObjectTreeViewItem *>(parent->child(childNo));
-        if (sub != 0 &&
+        if (sub != nullptr &&
-            sub->getUserFolderParent() != 0 &&
+            sub->getUserFolderParent() != nullptr &&
             sub->getUserFolderName() == folder) {
             otvi = sub;
             return otvi;
@@ -263,12 +263,12 @@ static ObjectTreeViewItem *findUserFolder(ObjectTreeViewItem *parent,
 ObjectTreeViewItem* ObjectManipulator::insertObject(ObjectTreeViewItem *itm,
                                                     FWObject *obj)
 {
-    if (FWReference::cast(obj)!=NULL) return NULL;
+    if (FWReference::cast(obj)!=nullptr) return nullptr;
-    if (Resources::global_res->getObjResourceBool(obj,"hidden") ) return NULL;
+    if (Resources::global_res->getObjResourceBool(obj,"hidden") ) return nullptr;
 
     if (Resources::global_res->getResourceBool(
             string("/FWBuilderResources/Type/") +
-            obj->getTypeName() + "/hidden")) return NULL;
+            obj->getTypeName() + "/hidden")) return nullptr;
 
     ObjectTreeViewItem *item = itm;
      if (!obj->getStr("folder").empty()) {
@@ -276,7 +276,7 @@ ObjectTreeViewItem* ObjectManipulator::insertObject(ObjectTreeViewItem *itm,
 
         /* If we can't find the user folder, put it under the system
            folder and get rid of the folder attribute */
-        if (item == 0) {
+        if (item == nullptr) {
             item = itm;
             obj->setStr("folder", "");
         }
@@ -316,15 +316,15 @@ void ObjectManipulator::insertSubtree(FWObject *parent, FWObject *obj)
     ObjectTreeViewItem* parent_item = allItems[parent];
     insertSubtree(parent_item, obj);
     QTreeWidgetItem *itm = allItems[parent];
-    if (itm==NULL) return;
+    if (itm==nullptr) return;
-    refreshSubtree(itm, NULL);
+    refreshSubtree(itm, nullptr);
 }
 
 void ObjectManipulator::insertSubtree(ObjectTreeViewItem *itm, FWObject *obj)
 {
     this->m_objectManipulator->filter->clear();
     ObjectTreeViewItem *nitm = insertObject(itm, obj);
-    if (nitm==NULL) return;
+    if (nitm==nullptr) return;
 
     if (FWBTree().isStandardFolder(obj)) nitm->setExpanded( st->getExpandTree());
 
@@ -387,7 +387,7 @@ void ObjectManipulator::insertSubtree(ObjectTreeViewItem *itm, FWObject *obj)
     for (list<FWObject*>::iterator m=obj->begin(); m!=obj->end(); m++)
     {
         FWObject *o1=*m;
-        if (FWReference::cast(o1)!=NULL) continue;
+        if (FWReference::cast(o1)!=nullptr) continue;
 
         insertSubtree(nitm, o1);
     }
@@ -404,7 +404,7 @@ void ObjectManipulator::removeObjectFromTreeView(FWObject *obj)
     objTreeView->clearLastSelected();
 
     ObjectTreeViewItem *itm = allItems[obj];
-    allItems[obj] = NULL;
+    allItems[obj] = nullptr;
     if (itm && itm->parent())
     {
         itm->parent()->takeChild(itm->parent()->indexOfChild(itm));
@@ -431,11 +431,11 @@ FWObject* ObjectManipulator::findRuleSetInHistoryByParentFw(FWObject* parent)
         if (RuleSet::cast(obj))
         {
             FWObject *parent_fw = Host::getParentHost(obj);
-            if (parent_fw != NULL && parent_fw == parent) return obj;
+            if (parent_fw != nullptr && parent_fw == parent) return obj;
         }
     }
 
-    return NULL;
+    return nullptr;
 }
 
 void ObjectManipulator::removeObjectFromHistory(FWObject *obj)
@@ -509,7 +509,7 @@ void ObjectManipulator::updateObjectInTree(FWObject *obj, bool subtree)
                  << "subtree=" << subtree;
 
     QTreeWidgetItem *itm = allItems[obj];
-    if (itm==NULL) return;
+    if (itm==nullptr) return;
 
     // first, update tree item that represents @obj. Its name or label
     // (second column) might have changed
@@ -528,7 +528,7 @@ void ObjectManipulator::updateObjectInTree(FWObject *obj, bool subtree)
 
     // now if we need to update subtree, call refreshSubtree()
     if (subtree)
-        refreshSubtree(itm, NULL);
+        refreshSubtree(itm, nullptr);
 }
 
 void ObjectManipulator::clearObjects()
@@ -543,7 +543,7 @@ void ObjectManipulator::clearObjects()
     {
 
         QTreeWidget *objTreeView = libs_model->getTreeWidget(i);
-        if (objTreeView == NULL) continue;
+        if (objTreeView == nullptr) continue;
         m_objectManipulator->widgetStack->removeWidget(objTreeView);
        // delete otv;
 
@@ -554,7 +554,7 @@ void ObjectManipulator::clearObjects()
 
     libs_model->addStaticItems();
     
-    current_tree_view = NULL;
+    current_tree_view = nullptr;
 
     if (fwbdebug) qDebug("ObjectManipulator::clearObjects done");
 }
@@ -580,7 +580,7 @@ void ObjectManipulator::loadObjects()
 
     clearObjects();
 
-    FWObject *firstUserLib = NULL;
+    FWObject *firstUserLib = nullptr;
     list<FWObject*> ll = m_project->db()->getByType( Library::TYPENAME );
 
     for (FWObject::iterator i=ll.begin(); i!=ll.end(); i++)
@@ -599,7 +599,7 @@ void ObjectManipulator::loadObjects()
 
         if ( lib->getId()!=FWObjectDatabase::STANDARD_LIB_ID &&
              lib->getId()!=FWObjectDatabase::TEMPLATE_LIB_ID &&
-             firstUserLib==NULL) firstUserLib = *i;
+             firstUserLib==nullptr) firstUserLib = *i;
 
         addLib( lib );
 
@@ -609,7 +609,7 @@ void ObjectManipulator::loadObjects()
 
     }
 
-    if (firstUserLib==NULL) firstUserLib = ll.front();
+    if (firstUserLib==nullptr) firstUserLib = ll.front();
     openLib( firstUserLib );
 
     if (fwbdebug)
@@ -774,9 +774,9 @@ void ObjectManipulator::moveItems(ObjectTreeViewItem *dest,
 {
     string folder;
 
-    if(dest != NULL)
+    if(dest != nullptr)
     {
-        if (dest->getUserFolderParent() != 0) {
+        if (dest->getUserFolderParent() != nullptr) {
             folder = dest->getUserFolderName().toUtf8().constData();
         } else {
             folder = dest->getFWObject()->getStr("folder");
@@ -807,7 +807,7 @@ void ObjectManipulator::addUserFolderToTree(FWObject *obj,
 
     ObjectTreeViewItem *item = allItems[obj];
 
-    if (item == 0) return;
+    if (item == nullptr) return;
 
     ObjectTreeViewItem *sub = new ObjectTreeViewItem(item);
 
@@ -834,7 +834,7 @@ std::string ObjectManipulator::getFolderNameString(libfwbuilder::FWObject *obj)
     FWObject *parent = obj->getParent();
 
 
-    while(parent != NULL) {
+    while(parent != nullptr) {
         result = parent->getName() + "/" + result;
         parent = parent->getParent();
     }
@@ -848,16 +848,16 @@ void ObjectManipulator::removeUserFolderFromTree(FWObject *obj,
                                                  const QString &folder)
 {
     ObjectTreeViewItem *item = allItems[obj];
-    if (item == 0) return;
+    if (item == nullptr) return;
 
     ObjectTreeViewItem *sub = findUserFolder(item, folder);
-    if (sub == 0) return;
+    if (sub == nullptr) return;
 
     QList<QTreeWidgetItem *> children = sub->takeChildren();
     while (!children.isEmpty()) {
         ObjectTreeViewItem *child = dynamic_cast<ObjectTreeViewItem *>
             (children.takeFirst());
-        assert(child != 0);
+        assert(child != nullptr);
 
         FWObject *obj = child->getFWObject();
         if (mw->isEditorVisible() && mw->getOpenedEditor() == obj) {
@@ -870,7 +870,7 @@ void ObjectManipulator::removeUserFolderFromTree(FWObject *obj,
     item->removeChild(sub);
     delete sub;
 
-    refreshSubtree(item, 0);
+    refreshSubtree(item, nullptr);
 }
 
 
@@ -881,7 +881,7 @@ void ObjectManipulator::moveToFromUserFolderInTree(FWObject *obj,
 {
     ObjectTreeViewItem *parent = allItems[obj];
     ObjectTreeViewItem *toMove = allItems[objToMove];
-    if (parent == 0 || toMove == 0) return;
+    if (parent == nullptr || toMove == nullptr) return;
 
     ObjectTreeViewItem *oldItem = findUserFolder(parent, oldFolder);
     ObjectTreeViewItem *newItem = findUserFolder(parent, newFolder);
@@ -889,7 +889,7 @@ void ObjectManipulator::moveToFromUserFolderInTree(FWObject *obj,
     oldItem->removeChild(toMove);
     newItem->addChild(toMove);
 
-    refreshSubtree(newItem, 0);
+    refreshSubtree(newItem, nullptr);
 }
 
                                                    

src/libgui/ObjectSelectorWidget.cpp

@@ -63,7 +63,7 @@ void ObjectSelectorWidget::updateObjectsToUse()
 {
     objects_to_use.clear();
     QListWidgetItem* item = m_dialog->objectList->item(0);
-    while (item != NULL)
+    while (item != nullptr)
     {
         QString name = item->text().split(" ")[0];
         QString addr = item->data(Qt::UserRole).toString();
@@ -154,7 +154,7 @@ void ObjectSelectorWidget::removeObject()
     QListWidgetItem* item1 = m_dialog->objectList->item(0);
     QListWidgetItem* item2;
 
-    while (item1!=0)
+    while (item1!=nullptr)
     {
         item2 = m_dialog->objectList->item(m_dialog->objectList->row(item1)+1);
         if (item1->isSelected())

src/libgui/ObjectTreeView.cpp

@@ -106,8 +106,8 @@ ObjectTreeView::ObjectTreeView(ProjectPanel* project,
     setExpandsOnDoubleClick(false);
 
     setDragEnabled(true);
-    item_before_drag_started=NULL;
+    item_before_drag_started=nullptr;
-    lastSelected = NULL;
+    lastSelected = nullptr;
     second_click = false;
     selectionFrozen = false;
     expandOrCollapse = false;
@@ -216,16 +216,16 @@ bool ObjectTreeView::event( QEvent *event )
         {
             int cx = pos.x(), cy = pos.y();
 
-            FWObject  *obj=NULL;
+            FWObject  *obj=nullptr;
             QRect      cr;
 
             QTreeWidgetItem *itm = itemAt(QPoint(cx, cy - header()->height()));
-            if (itm==NULL) return false;
+            if (itm==nullptr) return false;
             ObjectTreeViewItem *oivi  = dynamic_cast<ObjectTreeViewItem*>(itm);
-            assert(oivi!=NULL);
+            assert(oivi!=nullptr);
             obj = oivi->getFWObject();
 
-            if (obj==NULL) return false;
+            if (obj==nullptr) return false;
 
             if (obj->getId() == FWObjectDatabase::ANY_ADDRESS_ID  ||
                 obj->getId() == FWObjectDatabase::ANY_SERVICE_ID  ||
@@ -268,7 +268,7 @@ void ObjectTreeView::itemCollapsed(QTreeWidgetItem* itm)
     expandOrCollapse = true;
 
     ObjectTreeViewItem *otvi = dynamic_cast<ObjectTreeViewItem*>(itm);
-    assert(otvi!=NULL);
+    assert(otvi!=nullptr);
     FWObject *o = otvi->getFWObject();
     if (o)
     {
@@ -282,7 +282,7 @@ void ObjectTreeView::itemExpanded(QTreeWidgetItem* itm)
     expandOrCollapse = true;
 
     ObjectTreeViewItem *otvi=dynamic_cast<ObjectTreeViewItem*>(itm);
-    assert(otvi!=NULL);
+    assert(otvi!=nullptr);
     FWObject *o = otvi->getFWObject();
     if (o)
     {
@@ -319,7 +319,7 @@ FWObject* ObjectTreeView::getCurrentObject()
 {
     QTreeWidgetItem *ovi = currentItem();
     ObjectTreeViewItem *otvi=dynamic_cast<ObjectTreeViewItem*>(ovi);
-    if (otvi==NULL) return NULL;
+    if (otvi==nullptr) return nullptr;
     return otvi->getFWObject();
 }
 
@@ -347,7 +347,7 @@ void ObjectTreeView::updateTreeIcons()
         FWObject *obj = otvi->getFWObject();
 
         /* We can have obj==0 if it's a user-create subfolder */
-        if (obj == 0) continue;
+        if (obj == nullptr) continue;
 
         QPixmap pm_obj;
         IconSetter::setObjectIcon(obj, &pm_obj, 0);
@@ -359,12 +359,12 @@ void ObjectTreeView::updateTreeIcons()
 void ObjectTreeView::startDrag(Qt::DropActions supportedActions)
 {
     QTreeWidgetItem *ovi = currentItem();
-    if (ovi==NULL) return;
+    if (ovi==nullptr) return;
 
     FWObject *current_obj = getCurrentObject();
 
     /* User-defined folders can't be dragged */
-    if (current_obj == 0) return;
+    if (current_obj == nullptr) return;
 
     if (fwbdebug) qDebug("ObjectTreeView::startDrag: this: %p current_obj: %s",
                          this, current_obj->getName().c_str());
@@ -481,22 +481,22 @@ void ObjectTreeView::dragEnterEvent( QDragEnterEvent *ev)
 static bool isValidDropTarget(QTreeWidgetItem *item, list<FWObject *> &objs)
 {
     ObjectTreeViewItem *dest = dynamic_cast<ObjectTreeViewItem *>(item);
-    if (dest == 0) return false;
+    if (dest == nullptr) return false;
 
     bool dragIsNoop = true;
     list<FWObject *>::const_iterator iter;
     for (iter = objs.begin(); iter != objs.end(); ++iter) {
         FWObject *dragobj = *iter;
-        assert(dragobj != 0);
+        assert(dragobj != nullptr);
 
-        if (Interface::cast(dragobj) != 0 ||
+        if (Interface::cast(dragobj) != nullptr ||
-            Interface::cast(dragobj->getParent()) != 0 ||
+            Interface::cast(dragobj->getParent()) != nullptr ||
-            Policy::cast(dragobj) != 0 ||
+            Policy::cast(dragobj) != nullptr ||
-            NAT::cast(dragobj) != 0 ||
+            NAT::cast(dragobj) != nullptr ||
-            Routing::cast(dragobj) != 0) return false;
+            Routing::cast(dragobj) != nullptr) return false;
 
         /* See if destination is a user folder */
-        if (dest->getUserFolderParent() != 0) {
+        if (dest->getUserFolderParent() != nullptr) {
             /* Dragged object has to match parent of user folder */
             if (dest->getUserFolderParent() != dragobj->getParent()) {
                 return false;
@@ -548,11 +548,11 @@ void ObjectTreeView::dragMoveEvent(QDragMoveEvent *ev)
 void ObjectTreeView::dropEvent(QDropEvent *ev)
 {
     // only accept drops from the same instance of fwbuilder
-    if (ev->source() == NULL) return;
+    if (ev->source() == nullptr) return;
 
     ObjectTreeViewItem *dest =
         dynamic_cast<ObjectTreeViewItem *>(itemAt(ev->pos()));
-    if (dest == 0) {
+    if (dest == nullptr) {
     notWanted:
         ev->setAccepted(false);
         return;
@@ -581,7 +581,7 @@ void ObjectTreeView::mouseMoveEvent( QMouseEvent * e )
        clicks and tries to drag something non-draggable. */
     if (state() == DragSelectingState) return;
     QTreeWidget::mouseMoveEvent(e);
-    if (e==NULL)  return;
+    if (e==nullptr)  return;
 }
 
 void ObjectTreeView::mousePressEvent( QMouseEvent *e )
@@ -659,7 +659,7 @@ void ObjectTreeView::mouseReleaseEvent( QMouseEvent *e )
         qDebug("ObjectTreeView::mouseReleaseEvent 2 selectedObjects.size()=%d getCurrentObject()=%p current object %s",
                int(selectedObjects.size()),
                getCurrentObject(),
-               (getCurrentObject()!=NULL)?getCurrentObject()->getName().c_str():"nil");
+               (getCurrentObject()!=nullptr)?getCurrentObject()->getName().c_str():"nil");
 
     if (expandOrCollapse) return;  // user expanded or collapsed subtree,
                                    // no need to change object in the editor
@@ -742,7 +742,7 @@ void ObjectTreeView::itemOpened ()
 
 void ObjectTreeView::clearLastSelected()
 {
-    lastSelected = NULL;
+    lastSelected = nullptr;
 }
 
 
@@ -779,7 +779,7 @@ void ObjectTreeView::itemSelectionChanged()
         ObjectTreeViewItem *otvi = dynamic_cast<ObjectTreeViewItem*>(itm);
 
         FWObject *obj = otvi->getFWObject();
-        if (obj == 0) continue;
+        if (obj == nullptr) continue;
 
         selectedObjects.push_back(otvi->getFWObject());
 
@@ -824,7 +824,7 @@ void ObjectTreeView::ExpandTreeItems(const set<int> &ids)
         QTreeWidgetItem *itm = *it;
         ObjectTreeViewItem *otvi=dynamic_cast<ObjectTreeViewItem*>(itm);
         FWObject *obj = otvi->getFWObject();
-        if (obj == 0) continue;
+        if (obj == nullptr) continue;
         if (ids.count(obj->getId()))
             itm->setExpanded(true);
     }
@@ -852,7 +852,7 @@ QSet<QTreeWidgetItem*> ObjectTreeView::resolveParents(QTreeWidgetItem *child)
 {
     QSet<QTreeWidgetItem*> parents;
     parents.insert(child);
-    if (child->parent() == NULL) return parents;
+    if (child->parent() == nullptr) return parents;
     parents.unite(resolveParents(child->parent()));
     return parents;
 }
@@ -1013,7 +1013,7 @@ static bool filterMatches(const QString &text,
     // Support for port and ip search
     if (filterMatchesCommand(text, item)) return true;
 
-    if (item->getUserFolderParent() != 0) return false;
+    if (item->getUserFolderParent() != nullptr) return false;
     FWObject *obj = item->getFWObject();
 
     QByteArray utf8 = text.toUtf8();
@@ -1079,12 +1079,12 @@ void ObjectTreeView::setFilter(QString text)
         if (filterMatches(text, otvi)) {
             (*wit)->setHidden(false);
 
-            if (Firewall::cast(otvi->getFWObject()) != 0) {
+            if (Firewall::cast(otvi->getFWObject()) != nullptr) {
                 expand.push_back(otvi);
             }
 
             QTreeWidgetItem *parent = (*wit)->parent();
-            while (parent != 0) {
+            while (parent != nullptr) {
                 parent->setHidden(false);
                 parent = parent->parent();
             }

src/libgui/ObjectTreeViewItem.cpp

@@ -58,16 +58,16 @@ QVariant ObjectTreeViewItem::data(int column, int role) const
         QFont item_font = QTreeWidgetItem::data(column, role).value<QFont>();
 
         FWObject *obj = getFWObject();
-        Firewall *o = NULL;
+        Firewall *o = nullptr;
 
-        if (obj!=NULL && (
+        if (obj!=nullptr && (
                 getProperty("type")==Firewall::TYPENAME ||
                 getProperty("type")==Cluster::TYPENAME))
         {
             o = Firewall::cast( obj );
         }
 
-        if (o!=NULL)
+        if (o!=nullptr)
         {
             bool mf = !o->getInactive() && (o->needsCompile()) ;
             item_font.setBold (mf);
@@ -84,12 +84,12 @@ QVariant ObjectTreeViewItem::data(int column, int role) const
 static int getRank(FWObject *obj)
 {
     /* User-defined folders are first */
-    if (obj == 0) return 0;
+    if (obj == nullptr) return 0;
     
-    if (Interface::cast(obj) != 0) return 5;
+    if (Interface::cast(obj) != nullptr) return 5;
-    if (Policy::cast(obj) != 0) return 2;
+    if (Policy::cast(obj) != nullptr) return 2;
-    if (NAT::cast(obj) != 0) return 3;
+    if (NAT::cast(obj) != nullptr) return 3;
-    if (Routing::cast(obj) != 0) return 4;
+    if (Routing::cast(obj) != nullptr) return 4;
 
     return 1;
 }

src/libgui/PhysicalAddressDialog.cpp

@@ -57,7 +57,7 @@ PhysicalAddressDialog::PhysicalAddressDialog(QWidget *parent) : BaseObjectDialog
 {
     m_dialog = new Ui::PhysAddressDialog_q;
     m_dialog->setupUi(this);
-    obj=NULL;
+    obj=nullptr;
 
     connectSignalsOfAllWidgetsToSlotChange();
 }
@@ -71,7 +71,7 @@ void PhysicalAddressDialog::loadFWObject(FWObject *o)
 {
     obj=o;
     physAddress *s = dynamic_cast<physAddress*>(obj);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
     init=true;
 
@@ -105,7 +105,7 @@ void PhysicalAddressDialog::applyChanges()
     FWObject* new_state = cmd->getNewState();
 
     physAddress *s = dynamic_cast<physAddress*>(new_state);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
     string oldname=obj->getName();
     new_state->setName( string(m_dialog->obj_name->text().toUtf8().constData()) );

src/libgui/PrintingController.cpp

@@ -115,28 +115,28 @@ list<FWObject*> PrintingController::findAllUsedByType(list<FWObject*> &result,
                                                       FWObject *obj,
                                                       const string &type_name)
 {
-    if (RuleElement::cast(obj)!=NULL)
+    if (RuleElement::cast(obj)!=nullptr)
     {
         for (list<FWObject*>::iterator m=obj->begin(); m!=obj->end(); m++)
         {
             FWObject *o=*m;
-            if (FWReference::cast(o)!=NULL)
+            if (FWReference::cast(o)!=nullptr)
                 o=FWReference::cast(o)->getPointer();
             if (o->getTypeName()==type_name)
                 result.push_back(o);
         }
     }
 
-    if (RuleSet::cast(obj)!=NULL)
+    if (RuleSet::cast(obj)!=nullptr)
     {
         for (list<FWObject*>::iterator m=obj->begin(); m!=obj->end(); m++)
         {
-            if (Rule::cast(*m)!=NULL)
+            if (Rule::cast(*m)!=nullptr)
             {
                 for (list<FWObject*>::iterator n=(*m)->begin();
                      n!=(*m)->end(); n++)
                 {
-                    if (RuleElement::cast(*n)!=NULL)
+                    if (RuleElement::cast(*n)!=nullptr)
                     {
                         findAllUsedByType(result,*n,type_name);
                     }
@@ -149,7 +149,7 @@ list<FWObject*> PrintingController::findAllUsedByType(list<FWObject*> &result,
     {
         FWObject *ruleSet;
         const char* const child_types[] =
-            {Policy::TYPENAME, NAT::TYPENAME, Routing::TYPENAME, NULL};
+            {Policy::TYPENAME, NAT::TYPENAME, Routing::TYPENAME, nullptr};
         for (const char* const *cptr = child_types; *cptr; ++cptr)
         {
             for (FWObjectTypedChildIterator it = obj->findByType(*cptr);
@@ -179,9 +179,9 @@ int PrintingController::addObjectsToTable(list<FWObject*> &objects,
 
     for (list<FWObject*>::iterator i=objects.begin(); i!=objects.end(); ++i)
     {
-        if (Address::cast(*i)!=NULL && Address::cast(*i)->isAny()) continue;
+        if (Address::cast(*i)!=nullptr && Address::cast(*i)->isAny()) continue;
-        if (Service::cast(*i)!=NULL && Service::cast(*i)->isAny()) continue;
+        if (Service::cast(*i)!=nullptr && Service::cast(*i)->isAny()) continue;
-        if (Interval::cast(*i)!=NULL && Interval::cast(*i)->isAny()) continue;
+        if (Interval::cast(*i)!=nullptr && Interval::cast(*i)->isAny()) continue;
 
         if (col>=tbl->columnCount())
         {
@@ -261,8 +261,8 @@ void PrintingController::findAllGroups(list<FWObject*> &objects,
     {
         if (fwbdebug) qDebug("   %s",(*obj)->getName().c_str());
         FWObject *o = *obj;
-        if (FWReference::cast(o)!=NULL) o=FWReference::cast(o)->getPointer();
+        if (FWReference::cast(o)!=nullptr) o=FWReference::cast(o)->getPointer();
-        if (Group::cast(o)!=NULL &&
+        if (Group::cast(o)!=nullptr &&
             std::find(groups.begin(),groups.end(),o)==groups.end())
         {
             groups.push_back(o);
@@ -287,7 +287,7 @@ void PrintingController::printRuleSet(FWObject *fw,
         pr->printText(name);
 
         RuleSetView *ruleView = RuleSetView::getRuleSetViewByType(
-            project, ruleset, NULL);
+            project, ruleset, nullptr);
         ruleView->setSizePolicy( QSizePolicy( (QSizePolicy::Policy)7,
                                               (QSizePolicy::Policy)7) );
         ruleView->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
@@ -311,7 +311,7 @@ void PrintingController::printRuleSet(FWObject *fw,
 
 void PrintingController::printFirewall(FWObject *fw, ProjectPanel *project)
 {
-    if (Firewall::cast(fw)==NULL) return ;
+    if (Firewall::cast(fw)==nullptr) return ;
 
     string platform = fw->getStr("platform");
     string version  = fw->getStr("version");
@@ -328,7 +328,7 @@ void PrintingController::printFirewall(FWObject *fw, ProjectPanel *project)
     pr->printText(QObject::tr("Host OS: ")  + hostOS.c_str());
 
     const char* const child_types[] =
-        {Policy::TYPENAME, NAT::TYPENAME, Routing::TYPENAME, NULL};
+        {Policy::TYPENAME, NAT::TYPENAME, Routing::TYPENAME, nullptr};
 
     for (const char* const *cptr = child_types; *cptr; ++cptr)
     {
@@ -543,7 +543,7 @@ void PrintingController::printObjects(FWObject *firewall_to_print,
                  j!=(*obj)->end(); ++j)
             {
                 FWObject *o = *j;
-                if (FWReference::cast(o)!=NULL)
+                if (FWReference::cast(o)!=nullptr)
                     o=FWReference::cast(o)->getPointer();
                 groupMembers.push_back(o);
             }

src/libgui/ProjectPanel_events.cpp

@@ -70,17 +70,17 @@ bool ProjectPanel::event(QEvent *event)
                      << "rcs:"
                      << rcs
                      << "rcs->getFileName():"
-                     << QString((rcs!=NULL) ? rcs->getFileName() : "")
+                     << QString((rcs!=nullptr) ? rcs->getFileName() : "")
                      << "file:"
                      << data_file
                      << "event:"
                      << ev->getEventName()
                      << "object:"
-                     << ((obj!=NULL) ? QString::fromUtf8(obj->getName().c_str()) : "")
+                     << ((obj!=nullptr) ? QString::fromUtf8(obj->getName().c_str()) : "")
-                     << "(" << ((obj!=NULL) ? obj->getTypeName().c_str() : "") << ")"
+                     << "(" << ((obj!=nullptr) ? obj->getTypeName().c_str() : "") << ")"
-                     << "id=" << ((obj!=NULL) ? obj->getId() : -1);
+                     << "id=" << ((obj!=nullptr) ? obj->getId() : -1);
 
-        if (event_code == UPDATE_GUI_STATE_EVENT && mdiWindow != NULL)
+        if (event_code == UPDATE_GUI_STATE_EVENT && mdiWindow != nullptr)
         {
             m_panel->om->updateCreateObjectMenu(getCurrentLib());
             ev->accept();
@@ -126,7 +126,7 @@ bool ProjectPanel::event(QEvent *event)
                 return true;
             }
 
-            if (obj == NULL) return false;
+            if (obj == nullptr) return false;
 
             switch (event_code)
             {
@@ -136,7 +136,7 @@ bool ProjectPanel::event(QEvent *event)
                 // this purely data structure update event. 
 
                 FWObject *p = obj;
-                while (p && Firewall::cast(p)==NULL) p = p->getParent();
+                while (p && Firewall::cast(p)==nullptr) p = p->getParent();
                 Firewall *f = Firewall::cast(p);
                 // when user locks firewall object, this code tries to
                 // update last_modified timestamp in it because it
@@ -157,10 +157,10 @@ bool ProjectPanel::event(QEvent *event)
 
             case UPDATE_OBJECT_EVERYWHERE_EVENT:
             {
-                Rule *rule = NULL;
+                Rule *rule = nullptr;
-                RuleSet* current_ruleset = NULL;
+                RuleSet* current_ruleset = nullptr;
                 RuleSetView* rsv = getCurrentRuleSetView();
-                RuleSetModel* md = NULL;
+                RuleSetModel* md = nullptr;
                 if (rsv)
                 {
                     md = (RuleSetModel*)rsv->model();
@@ -250,7 +250,7 @@ bool ProjectPanel::event(QEvent *event)
             // update events below will only be processed if MDI
             // window exists.
 
-            if (mdiWindow == NULL) return false;
+            if (mdiWindow == nullptr) return false;
 
             switch (event->type() - QEvent::User)
             {
@@ -326,9 +326,9 @@ bool ProjectPanel::event(QEvent *event)
                 FWReference *ref = FWReference::cast(obj);
                 if (ref)
                 {
-                    RuleSet* current_ruleset = NULL;
+                    RuleSet* current_ruleset = nullptr;
                     RuleSetView* rsv = getCurrentRuleSetView();
-                    RuleSetModel* md = NULL;
+                    RuleSetModel* md = nullptr;
                     if (rsv)
                     {
                         md = (RuleSetModel*)rsv->model();
@@ -343,7 +343,7 @@ bool ProjectPanel::event(QEvent *event)
                     } else
                     {
                         FWObject *rs = obj;
-                        while (rs && RuleSet::cast(rs)==NULL) rs = rs->getParent();
+                        while (rs && RuleSet::cast(rs)==nullptr) rs = rs->getParent();
                         if (rs)
                         {
                             // reopen rule set right now, before we post event
@@ -371,9 +371,9 @@ bool ProjectPanel::event(QEvent *event)
                 Rule *rule = Rule::cast(obj);
                 if (rule)
                 {
-                    RuleSet* current_ruleset = NULL;
+                    RuleSet* current_ruleset = nullptr;
                     RuleSetView* rsv = getCurrentRuleSetView();
-                    RuleSetModel* md = NULL;
+                    RuleSetModel* md = nullptr;
                     if (rsv)
                     {
                         md = (RuleSetModel*)rsv->model();

src/libgui/ProjectPanel_file_ops.cpp

@@ -116,7 +116,7 @@ bool ProjectPanel::saveIfModified(bool include_discard_button)
             switch (QMessageBox::information(this, "Firewall Builder",
                                              message,
                                              tr("&Save"),tr("&Cancel"),
-                                             0,      // Enter = button 0
+                                             nullptr,      // Enter = button 0
                                              1 ) )   // Escape == button 1
             {
             case 0:
@@ -175,7 +175,7 @@ QString ProjectPanel::chooseNewFileName(const QString &fname,
 
 void ProjectPanel::fileProp()
 {
-    if (rcs!=NULL)
+    if (rcs!=nullptr)
     {
         filePropDialog fpd(this,rcs);
         fpd.setPrinter(mainW->getPrinter());
@@ -193,12 +193,12 @@ bool ProjectPanel::fileNew()
     if ( !nfn.isEmpty() )
     {
         //if (!saveIfModified() || !checkin(true)) return;
-        if (!systemFile && rcs!=NULL) 
+        if (!systemFile && rcs!=nullptr) 
             fileClose();       // fileClose calls load(this)
         else  
             loadStandardObjects();
 
-        visibleFirewall = NULL;
+        visibleFirewall = nullptr;
         setFileName(nfn);
         save();
         setupAutoSave();
@@ -210,10 +210,10 @@ bool ProjectPanel::fileNew()
 
     if (fwbdebug)
         qDebug("ProjectPanel::fileNew()  rcs=%p  rcs->getFileName()='%s'",
-               rcs, rcs == 0 ? "<null>" :
+               rcs, rcs == nullptr ? "<null>" :
                rcs->getFileName().toLatin1().constData());
 
-    return (rcs!=NULL);
+    return (rcs!=nullptr);
 }
 
 bool ProjectPanel::loadFile(const QString &fileName, bool load_rcs_head)
@@ -241,7 +241,7 @@ bool ProjectPanel::loadFile(const QString &fileName, bool load_rcs_head)
 
     if (!saveIfModified() || !checkin(true)) return false;
 
-    if (!systemFile && rcs!=NULL)
+    if (!systemFile && rcs!=nullptr)
     {
         if (mw->isEditorVisible()) mw->hideEditor();
         reset();
@@ -252,8 +252,8 @@ bool ProjectPanel::loadFile(const QString &fileName, bool load_rcs_head)
 
     //if preview cannot give RCS,
     //get a new RCS from file dialog
-    if (new_rcs==NULL) new_rcs = new RCS(fileName);
+    if (new_rcs==nullptr) new_rcs = new RCS(fileName);
-    if (new_rcs==NULL) return false;
+    if (new_rcs==nullptr) return false;
 
     try
     {
@@ -334,7 +334,7 @@ void ProjectPanel::fileSaveAs()
     {
         db()->setDirty(false);  // so it wont ask if user wants to save
         rcs->abandon();
-        if (rcs!=NULL) delete rcs;
+        if (rcs!=nullptr) delete rcs;
         rcs = new RCS("");
         setFileName(newFileName);
         save();
@@ -381,13 +381,13 @@ void ProjectPanel::fileDiscard()
         if (mw->isEditorVisible()) mw->hideEditor();
 
         if (rcs) delete rcs;
-        rcs=NULL;
+        rcs=nullptr;
 
         FWObjectClipboard::obj_clipboard->clear();
 
         firewalls.clear();
-        visibleFirewall = NULL;
+        visibleFirewall = nullptr;
-        visibleRuleSet = NULL;
+        visibleRuleSet = nullptr;
         clearFirewallTabs();
         clearObjects();
 
@@ -715,20 +715,20 @@ bool ProjectPanel::exportLibraryTest(list<FWObject*> &selectedLibs)
 
             if (std::find(selectedLibs.begin(),selectedLibs.end(),tgtlib)!=selectedLibs.end()) continue;
 
-            if (RuleElement::cast(pp)!=NULL)
+            if (RuleElement::cast(pp)!=nullptr)
             {
                 FWObject *fw       = pp;
                 FWObject *rule     = pp;
                 FWObject *ruleset  = pp;
                 FWObject *iface    = pp;
 
-                while (rule!=NULL && Rule::cast(rule)==NULL)
+                while (rule!=nullptr && Rule::cast(rule)==nullptr)
                     rule=rule->getParent();
-                while (ruleset!=NULL && RuleSet::cast(ruleset)==NULL)
+                while (ruleset!=nullptr && RuleSet::cast(ruleset)==nullptr)
                     ruleset=ruleset->getParent();
-                while (iface!=NULL && Interface::cast(iface)==NULL)
+                while (iface!=nullptr && Interface::cast(iface)==nullptr)
                     iface=iface->getParent();
-                while (fw!=NULL && Firewall::cast(fw)==NULL)
+                while (fw!=nullptr && Firewall::cast(fw)==nullptr)
                     fw=fw->getParent();
 
                 s = QObject::tr("Library %1: Firewall '%2' (%3 rule #%4) uses "
@@ -814,7 +814,7 @@ void ProjectPanel::exportLibraryTo(QString fname,list<FWObject*> &selectedLibs,
 void ProjectPanel::setupAutoSave()
 {
     if ( st->getBool("Environment/autoSaveFile") &&
-         rcs!=NULL && rcs->getFileName()!="")
+         rcs!=nullptr && rcs->getFileName()!="")
     {
         int p = st->getInt("Environment/autoSaveFilePeriod");
         autosaveTimer->start( p*1000*60 );
@@ -828,7 +828,7 @@ void ProjectPanel::findExternalRefs(FWObject *lib,
                                        list<FWReference*> &extRefs)
 {
     FWReference *ref=FWReference::cast(root);
-    if (ref!=NULL)
+    if (ref!=nullptr)
     {
         FWObject *plib = ref->getPointer()->getLibrary();
         if ( plib->getId()!=FWObjectDatabase::STANDARD_LIB_ID &&
@@ -851,7 +851,7 @@ void ProjectPanel::findExternalRefs(FWObject *lib,
 FWObject* ProjectPanel::loadLibrary(const string &libfpath)
 {
     MessageBoxUpgradePredicate upgrade_predicate(mainW);
-    FWObject *last_new_lib = NULL;
+    FWObject *last_new_lib = nullptr;
 
     try
     {
@@ -869,7 +869,7 @@ FWObject* ProjectPanel::loadLibrary(const string &libfpath)
              ++it)
         {
             FWObject *obj = ndb->findInIndex(*it);
-            assert(obj!=NULL);
+            assert(obj!=nullptr);
             int new_id = FWObjectDatabase::generateUniqueId();
             obj->setId(new_id);
             id_mapping[*it] = new_id;
@@ -1007,7 +1007,7 @@ bool ProjectPanel::loadFromRCS(RCS *_rcs)
 
     MessageBoxUpgradePredicate upgrade_predicate(mainW);
 
-    assert(_rcs!=NULL);
+    assert(_rcs!=nullptr);
 
     rcs = _rcs;
     try
@@ -1106,7 +1106,7 @@ bool ProjectPanel::loadFromRCS(RCS *_rcs)
          * read-only.
          */
         FWObject *slib = objdb->findInIndex(FWObjectDatabase::STANDARD_LIB_ID);
-        if (slib!=NULL )
+        if (slib!=nullptr )
         {
             if (fwbdebug)
                 qDebug("standard library read-only status: %d, "
@@ -1310,7 +1310,7 @@ bool ProjectPanel::checkin(bool unlock)
 /* doing checkin only if we did checkout so rcs!=NULL */
     QString rlog="";
 
-    if (systemFile || rcs==NULL || !rcs->isCheckedOut() || rcs->isTemp())
+    if (systemFile || rcs==nullptr || !rcs->isCheckedOut() || rcs->isTemp())
         return true;
 
     if (rcs->isDiff())

src/libgui/ProjectPanel_state_ops.cpp

@@ -50,7 +50,7 @@ using namespace std;
 void ProjectPanel::saveState()
 {
     QString file_name ;
-    if (rcs!=NULL) file_name = rcs->getFileName();
+    if (rcs!=nullptr) file_name = rcs->getFileName();
     if (fwbdebug)
         qDebug( ) << "ProjectPanel::saveState " << this 
                   << "title " << mdiWindow->windowTitle()
@@ -83,7 +83,7 @@ void ProjectPanel::saveState()
 
 void ProjectPanel::loadState(bool)
 {
-    if (rcs==NULL) return;
+    if (rcs==nullptr) return;
     QString filename = rcs->getFileName();
 
     // This function can end up being called recursively because some
@@ -106,7 +106,7 @@ void ProjectPanel::loadState(bool)
     if (!mdiWindow->isMaximized() && mdiWindow)
     {
         if (fwbdebug) qDebug("ProjectPanel::loadState  show normal");
-        setWindowState(0);
+        setWindowState(nullptr);
         int x = st->getInt("Window/"+filename+"/x");
         int y = st->getInt("Window/"+filename+"/y");
         int width = st->getInt("Window/"+filename+"/width");
@@ -144,7 +144,7 @@ void ProjectPanel::loadState(bool)
 void ProjectPanel::saveMainSplitter()
 {
     QString fileName ;
-    if (rcs!=NULL) fileName = rcs->getFileName();
+    if (rcs!=nullptr) fileName = rcs->getFileName();
 
 #ifdef TREE_IS_DOCKABLE
     // Save position of splitters regardless of the window state
@@ -182,7 +182,7 @@ void ProjectPanel::saveMainSplitter()
 void ProjectPanel::loadMainSplitter()
 {
     QString fileName ;
-    if (rcs!=NULL) fileName = rcs->getFileName();
+    if (rcs!=nullptr) fileName = rcs->getFileName();
 
     if (fwbdebug)
         qDebug() << QString("ProjectPanel::loadMainSplitter() filename=%1")
@@ -242,10 +242,10 @@ void ProjectPanel::collapseRules()
 
 void ProjectPanel::loadOpenedRuleSet()
 {
-    if (rcs==NULL) return;
+    if (rcs==nullptr) return;
     QString filename = rcs->getFileName();
 
-    if (m_panel->om->getCurrentLib() == NULL) return;
+    if (m_panel->om->getCurrentLib() == nullptr) return;
 
     int id = st->getVisibleRuleSetId(
         filename, m_panel->om->getCurrentLib()->getName().c_str());
@@ -276,10 +276,10 @@ void ProjectPanel::loadOpenedRuleSet()
 
 void ProjectPanel::saveOpenedRuleSet()
 {
-    if (rcs==NULL) return;
+    if (rcs==nullptr) return;
     QString filename = rcs->getFileName();
 
-    if (visibleRuleSet!=NULL)
+    if (visibleRuleSet!=nullptr)
     {
         st->setVisibleRuleSet(filename,
                               visibleRuleSet->getLibrary()->getName().c_str(),
@@ -291,10 +291,10 @@ void ProjectPanel::saveOpenedRuleSet()
 void ProjectPanel::saveLastOpenedLib()
 {
     QString filename = "";
-    if (rcs!=NULL) filename = rcs->getFileName();
+    if (rcs!=nullptr) filename = rcs->getFileName();
 
     FWObject*  obj = m_panel->om->getCurrentLib();
-    if (obj!=NULL)
+    if (obj!=nullptr)
     {
         std::string sid = FWObjectDatabase::getStringId(obj->getId());
         st->setStr("Window/" + filename + "/LastLib", sid.c_str() );
@@ -307,7 +307,7 @@ void ProjectPanel::loadLastOpenedLib()
     if (fwbdebug) qDebug("ProjectPanel::loadLastOpenedLib()");
 
     QString filename = "";
-    if (rcs!=NULL) filename = rcs->getFileName();
+    if (rcs!=nullptr) filename = rcs->getFileName();
     QString sid = st->getStr("Window/" + filename + "/LastLib");
     if (filename!="" && sid!="")
     {
@@ -334,7 +334,7 @@ void ProjectPanel::loadLastOpenedLib()
 void ProjectPanel::loadFirstNonStandardLib()
 {
     list<FWObject*> all_libs = db()->getByType(Library::TYPENAME);
-    FWObject *first_non_system_lib = NULL;
+    FWObject *first_non_system_lib = nullptr;
     for (list<FWObject*>::iterator i=all_libs.begin(); i!=all_libs.end(); ++i)
     {
         int lib_id = (*i)->getId();
@@ -342,7 +342,7 @@ void ProjectPanel::loadFirstNonStandardLib()
         if (lib_id == FWObjectDatabase::STANDARD_LIB_ID) continue;
         if (lib_id == FWObjectDatabase::TEMPLATE_LIB_ID) continue;
 
-        if (first_non_system_lib==NULL) first_non_system_lib = (*i);
+        if (first_non_system_lib==nullptr) first_non_system_lib = (*i);
         if ((*i)->getName()=="User")
         {
             first_non_system_lib = *i;

src/libgui/RCSFilePreview.cpp

@@ -83,7 +83,7 @@ RCSFilePreview::RCSFilePreview(QWidget *parent): QDialog(parent)
 
     if (fwbdebug) qDebug("RCSFilePreview: constructor done");
 
-    rcs = NULL;
+    rcs = nullptr;
     RO = false;
 }
 
@@ -96,7 +96,7 @@ RCSFilePreview::~RCSFilePreview()
 
 void RCSFilePreview::openReadOnly()
 {
-    if (rcs!=NULL) rcs->setRO(true);
+    if (rcs!=nullptr) rcs->setRO(true);
     RO = true;
     accept();
 }
@@ -111,7 +111,7 @@ void RCSFilePreview::selectedRevision(QTreeWidgetItem *itm)
     if (itm == m_widget->RCSTreeView->topLevelItem(0)) return;
 
     QString rev = itm->text(0);
-    assert(rcs!=NULL);
+    assert(rcs!=nullptr);
     rcs->setSelectedRev(rev);
     m_widget->comment->setText( rcsComments[rev] );
     if (fwbdebug)
@@ -131,7 +131,7 @@ bool RCSFilePreview::showFileRLog( const QString &filename )
 
     m_widget->RCSTreeView->clear();
 
-    if (rcs!=NULL) delete rcs;
+    if (rcs!=nullptr) delete rcs;
     rcs = new RCS(filename);
 
     if (rcs->revisions.size()==0)
@@ -155,8 +155,8 @@ bool RCSFilePreview::showFileRLog( const QString &filename )
     QList<Revision>::iterator i;
     QList<RCSViewItem*> itemList;
     QList<RCSViewItem*>::iterator ili;
-    RCSViewItem* latest_revision_item = NULL;
+    RCSViewItem* latest_revision_item = nullptr;
-    RCSViewItem* latest_date_item = NULL;
+    RCSViewItem* latest_date_item = nullptr;
     string latest_revision = "1.0";
     QString latest_date = "";
 
@@ -164,7 +164,7 @@ bool RCSFilePreview::showFileRLog( const QString &filename )
     {
         rcsComments[(*i).rev] = (*i).log;
 
-        RCSViewItem *itm = NULL;
+        RCSViewItem *itm = nullptr;
         if (st->getRCSFilePreviewStyle()==1)
         {
             // List style
@@ -187,7 +187,7 @@ bool RCSFilePreview::showFileRLog( const QString &filename )
                     if ((*ili)->text(0) == branch_root)
                     {
                         QTreeWidgetItem *br = *ili;
-                        if (br!=NULL)  itm = addRevision((*i), br);
+                        if (br!=nullptr)  itm = addRevision((*i), br);
                     }
                 }
             }
@@ -222,7 +222,7 @@ bool RCSFilePreview::showFileRLog( const QString &filename )
              SIGNAL(currentItemChanged(QTreeWidgetItem*, QTreeWidgetItem*)),
              this, SLOT(selectedRevision(QTreeWidgetItem*)));
 
-    RCSViewItem* show_item = NULL;
+    RCSViewItem* show_item = nullptr;
 
     if (m_widget->RCSTreeView->sortColumn()==0 && latest_revision_item)
         show_item = latest_revision_item;

src/libgui/RuleOptionsDialog.cpp

@@ -81,7 +81,7 @@ RuleOptionsDialog::RuleOptionsDialog(QWidget *parent) :
 
     connectSignalsOfAllWidgetsToSlotChange();
 
-    firewall = NULL;
+    firewall = nullptr;
     init=false;
 }
 
@@ -425,7 +425,7 @@ void RuleOptionsDialog::applyChanges()
         {
             FWObject *tag_object = m_dialog->iptTagDropArea->getObject();
             // if tag_object==NULL, setTagObject clears setting in the rule
-            policy_rule->setTagging(tag_object != NULL);
+            policy_rule->setTagging(tag_object != nullptr);
             policy_rule->setTagObject(tag_object);
 
             policy_rule->setClassification(
@@ -440,7 +440,7 @@ void RuleOptionsDialog::applyChanges()
         {
             FWObject *tag_object = m_dialog->pfTagDropArea->getObject();
             // if tag_object==NULL, setTagObject clears setting in the rule
-            policy_rule->setTagging(tag_object != NULL);
+            policy_rule->setTagging(tag_object != nullptr);
             policy_rule->setTagObject(tag_object);
 
             policy_rule->setClassification(

src/libgui/RuleSetDiffDialog.cpp

@@ -91,7 +91,7 @@ RuleSetDiffDialog::RuleSetDiffDialog(ProjectPanel *project, QWidget *parent) :
 
 Library* RuleSetDiffDialog::findUserLibrary(FWObjectDatabase *db)
 {
-    Library *lib = NULL;
+    Library *lib = nullptr;
     foreach (FWObject *obj, db->getByType(Library::TYPENAME))
     {
         if (obj->getName() == "User")

src/libgui/RuleSetViewDelegate.cpp

@@ -209,7 +209,7 @@ void RuleSetViewDelegate::paintRule(QPainter *painter,
     QVariant v = index.data(Qt::DisplayRole);
     if (!v.isValid()) return;
 
-    if (node != 0)
+    if (node != nullptr)
     {
         QString color = getRuleColor(node);
         if (!color.isEmpty())
@@ -352,7 +352,7 @@ void RuleSetViewDelegate::paintObject(
     //if (fwbdebug) qDebug() << "RuleSetViewDelegate::paintObject";
     RuleElement *re = (RuleElement *)v.value<void *>();
 
-    if (re==NULL) return;
+    if (re==nullptr) return;
 
     DrawingContext ctx = initContext(option.rect, true);
 
@@ -361,7 +361,7 @@ void RuleSetViewDelegate::paintObject(
     for (FWObject::iterator i=re->begin(); i!=re->end(); i++)
     {
         FWObject *o1 = FWReference::getObject(*i);
-        if (o1==NULL) continue ;
+        if (o1==nullptr) continue ;
 
         QRect itemRect = QRect(ctx.objectRect.left(), y, ctx.objectRect.width(), ctx.itemHeight);
 
@@ -578,7 +578,7 @@ QSize RuleSetViewDelegate::calculateCellSizeForComment(const QModelIndex & index
 QSize RuleSetViewDelegate::calculateCellSizeForObject(const QModelIndex & index) const
 {
     RuleElement *re = (RuleElement *)index.data(Qt::DisplayRole).value<void *>();
-    if (re == 0) return QSize(0,0);
+    if (re == nullptr) return QSize(0,0);
 
     int itemHeight = getItemHeight();
     QSize iconSize = getIconSize();
@@ -591,12 +591,12 @@ QSize RuleSetViewDelegate::calculateCellSizeForObject(const QModelIndex & index)
         FWObject *o1= *j;
         FWObject *o2 = o1;
         string o1ref = "";
-        if (FWReference::cast(o1)!=NULL)
+        if (FWReference::cast(o1)!=nullptr)
         {
             o1ref = FWReference::cast(o1)->getPointerId();
             o2=FWReference::cast(o1)->getPointer();
         }
-        if (o2!=NULL)
+        if (o2!=nullptr)
         {
             QString ot = objectText(re,o2);
 

src/libgui/StartTipDialog.cpp

@@ -73,7 +73,7 @@ StartTipDialog::StartTipDialog(QWidget *parent): QDialog(parent)
     
     // we use separate Help() object for the tip of the day becayse it should
     // have different size and should not be persistent
-    Help *h = new Help(NULL, "");
+    Help *h = new Help(nullptr, "");
     int tip_no = 1;
     while (true)
     {

src/libgui/TCPServiceDialog.cpp

@@ -56,7 +56,7 @@ TCPServiceDialog::TCPServiceDialog(QWidget *parent) : BaseObjectDialog(parent)
     m_dialog = new Ui::TCPServiceDialog_q;
     m_dialog->setupUi(this);
 
-    obj=NULL;
+    obj=nullptr;
 
     connectSignalsOfAllWidgetsToSlotChange();
 }
@@ -70,7 +70,7 @@ void TCPServiceDialog::loadFWObject(FWObject *o)
 {
     obj=o;
     TCPService *s = dynamic_cast<TCPService*>(obj);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
     init=true;
 

src/libgui/TagServiceDialog.cpp

@@ -64,7 +64,7 @@ TagServiceDialog::TagServiceDialog(QWidget *parent) : BaseObjectDialog(parent)
 {
     m_dialog = new Ui::TagServiceDialog_q;
     m_dialog->setupUi(this);
-    obj=NULL;
+    obj=nullptr;
 
     connectSignalsOfAllWidgetsToSlotChange();
 }
@@ -73,7 +73,7 @@ void TagServiceDialog::loadFWObject(FWObject *o)
 {
     obj=o;
     TagService *s = dynamic_cast<TagService*>(obj);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
 
     init=true;
@@ -98,7 +98,7 @@ void TagServiceDialog::validate(bool *res)
 {
     *res=true;
     TagService *s = dynamic_cast<TagService*>(obj);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
     if (!validateName(this,obj,m_dialog->obj_name->text())) { *res=false; return; }
 }
@@ -111,7 +111,7 @@ void TagServiceDialog::applyChanges()
     FWObject* new_state = cmd->getNewState();
 
     TagService *s = dynamic_cast<TagService*>(new_state);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
     string oldname = obj->getName();
     new_state->setName( string(m_dialog->obj_name->text().toUtf8().constData()) );

src/libgui/TutorialDialog.cpp

@@ -32,10 +32,10 @@
 #include <QFile>
 #include "FWBApplication.h"
 
-TutorialDialog * TutorialDialog::dialog = NULL;
+TutorialDialog * TutorialDialog::dialog = nullptr;
 
 TutorialDialog::TutorialDialog(QString tutorial, QWidget *parent) :
-    QDialog(NULL),
+    QDialog(nullptr),
     ui(new Ui::TutorialDialog_q)
 {
     Q_UNUSED(parent)
@@ -50,7 +50,7 @@ TutorialDialog::TutorialDialog(QString tutorial, QWidget *parent) :
 
 void TutorialDialog::showTutorial(QString tutorial)
 {
-    if (dialog != NULL)
+    if (dialog != nullptr)
     {
         dialog->initializeTutorial(tutorial);
         dialog->showNormal();

src/libgui/UDPServiceDialog.cpp

@@ -55,7 +55,7 @@ UDPServiceDialog::UDPServiceDialog(QWidget *parent) : BaseObjectDialog(parent)
     m_dialog = new Ui::UDPServiceDialog_q;
     m_dialog->setupUi(this);
 
-    obj=NULL;
+    obj=nullptr;
 
     connectSignalsOfAllWidgetsToSlotChange();
 }
@@ -69,7 +69,7 @@ void UDPServiceDialog::loadFWObject(FWObject *o)
 {
     obj=o;
     UDPService *s = dynamic_cast<UDPService*>(obj);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
     init=true;
 

src/libgui/UserDialog.cpp

@@ -56,7 +56,7 @@ UserDialog::UserDialog(QWidget *parent) : BaseObjectDialog(parent)
 {
     m_dialog = new Ui::UserDialog_q;
     m_dialog->setupUi(this);
-    obj=NULL;
+    obj=nullptr;
 
     connectSignalsOfAllWidgetsToSlotChange();
 }
@@ -67,7 +67,7 @@ void UserDialog::loadFWObject(FWObject *o)
 {
     obj=o;
     UserService *s = dynamic_cast<UserService*>(obj);
-    assert(s!=NULL);
+    assert(s!=nullptr);
     
     init=true;
 
@@ -94,7 +94,7 @@ void UserDialog::validate(bool *res)
     if (!validateName(this,obj,m_dialog->obj_name->text())) { *res=false; return; }
 
     UserService *s = dynamic_cast<UserService*>(obj);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 }
 
 
@@ -105,7 +105,7 @@ void UserDialog::applyChanges()
     FWObject* new_state = cmd->getNewState();
 
     UserService *s = dynamic_cast<UserService*>(new_state);
-    assert(s!=NULL);
+    assert(s!=nullptr);
 
     string oldname = obj->getName();
     s->setName( string(m_dialog->obj_name->text().toUtf8().constData()) );

src/libgui/bsdIfaceOptsDialog.cpp

@@ -52,7 +52,7 @@ bsdIfaceOptsDialog::bsdIfaceOptsDialog(QWidget *parent, FWObject *o)
     obj = o;
 
     FWOptions *ifopt = (Interface::cast(obj))->getOptionsObject();
-    cluster_interface = (Cluster::cast(obj->getParent()) != NULL);
+    cluster_interface = (Cluster::cast(obj->getParent()) != nullptr);
 
     setInterfaceTypes(m_dialog->iface_type, Interface::cast(obj),
                       ifopt->getStr("type").c_str());
@@ -108,7 +108,7 @@ void bsdIfaceOptsDialog::accept()
     // new_state  is a copy of the interface object
     FWObject* new_state = cmd->getNewState();
     FWOptions* ifopt = Interface::cast(new_state)->getOptionsObject();
-    assert(ifopt!=NULL);
+    assert(ifopt!=nullptr);
 
     if (cluster_interface)
     {

src/libgui/carpOptionsDialog.cpp

@@ -52,7 +52,7 @@ carpOptionsDialog::carpOptionsDialog(QWidget *parent, FWObject *o)
     obj = o;
 
     FWOptions *gropt = FWOptions::cast(obj);
-    assert(gropt != NULL);
+    assert(gropt != nullptr);
     
     data.registerOption(m_dialog->carp_password,
                         gropt,

src/libgui/clusterMembersDialog.cpp

@@ -60,14 +60,14 @@ clusterMembersDialog::clusterMembersDialog(QWidget *parent, FWObject *o)
     // if empty, retry with parent of parent (interface level)
     if (host_os.isEmpty())
     {
-        FWObject *parent = NULL;
+        FWObject *parent = nullptr;
         parent = obj->getParent();
-        if (parent == NULL)
+        if (parent == nullptr)
         {
             throw FWException("clusterMembersDialog: parent is NULL!");
         }
         parent = parent->getParent();
-        if (parent == NULL)
+        if (parent == nullptr)
         {
             throw FWException("clusterMembersDialog: parent is NULL!");
         }
@@ -120,9 +120,9 @@ void clusterMembersDialog::getSelectedMembers()
     {
 
         // get fw and interface pointer from interface reference
-        Interface *iface = NULL;
+        Interface *iface = nullptr;
         iface = Interface::cast(FWReference::cast((*it))->getPointer());
-        assert(iface != NULL);
+        assert(iface != nullptr);
         Firewall *fw = Firewall::cast(Host::getParentHost(iface));
         //Firewall *fw = Firewall::cast(iface->getParentHost());
 
@@ -135,7 +135,7 @@ void clusterMembersDialog::getSelectedMembers()
         }
         // create ClusterMember object
         ClusterMember *new_member = createMember(fw, iface, master);
-        if (new_member == NULL)
+        if (new_member == nullptr)
         {
             qWarning() << "clusterMembersDialog: could not create new "
                 "cluster member";
@@ -183,7 +183,7 @@ void clusterMembersDialog::getPossibleMembers()
 
             // valid member, add to member list
             ClusterMember *new_member = createMember(fw);
-            if (new_member == NULL)
+            if (new_member == nullptr)
             {
                 qWarning() << "clusterMembersDialog: could not create new "
                     "cluster member";
@@ -200,7 +200,7 @@ void clusterMembersDialog::updateSelectedTable()
     table_update = true;
     m_dialog->fwSelectedTable->setRowCount(selected.size());
 
-    QTableWidgetItem *item = NULL;
+    QTableWidgetItem *item = nullptr;
     int row = 0;
     for (t_memberList::const_iterator it = selected.begin();
             it != selected.end(); it++)
@@ -211,7 +211,7 @@ void clusterMembersDialog::updateSelectedTable()
 
         item = m_dialog->fwSelectedTable->item(row, 0);
         const char *new_text = (*it)->fwobj->getName().c_str();
-        if (item == NULL)
+        if (item == nullptr)
         {
             item = new QTableWidgetItem;
             item->setText(new_text);
@@ -226,7 +226,7 @@ void clusterMembersDialog::updateSelectedTable()
         // Column "Interface"
         item = m_dialog->fwSelectedTable->item(row, 1);
         new_text = (*it)->iface_cluster->getName().c_str();
-        if (item == NULL)
+        if (item == nullptr)
         {
             item = new QTableWidgetItem;
             item->setText(new_text);
@@ -241,7 +241,7 @@ void clusterMembersDialog::updateSelectedTable()
         // Column "Master"
         item = m_dialog->fwSelectedTable->item(row, 2);
         Qt::CheckState state = (*it)->is_master ? Qt::Checked : Qt::Unchecked;
-        if (item == NULL)
+        if (item == nullptr)
         {
             item = new QTableWidgetItem;
             item->setCheckState(state);
@@ -305,15 +305,15 @@ ClusterMember*
 clusterMembersDialog::createMember(Firewall *fw,
                                    Interface *cluster_iface, bool master)
 {
-    if (fw == NULL)
+    if (fw == nullptr)
     {
-        return NULL;
+        return nullptr;
     }
 
     ClusterMember *new_member = new ClusterMember;
     new_member->fwobj = fw;
     new_member->is_master = master;
-    if (cluster_iface != NULL)
+    if (cluster_iface != nullptr)
     {
         new_member->iface_cluster = cluster_iface;
     }

src/libgui/conntrackOptionsDialog.cpp

@@ -50,13 +50,13 @@ conntrackOptionsDialog::conntrackOptionsDialog(QWidget *parent, FWObject *o)
     obj = o;
 
     FWOptions *gropt = FWOptions::cast(obj);
-    assert(gropt != NULL);
+    assert(gropt != nullptr);
     FWObject *p = obj;
-    while (p && Cluster::cast(p)==NULL) p = p->getParent();
+    while (p && Cluster::cast(p)==nullptr) p = p->getParent();
-    assert(p != NULL);
+    assert(p != nullptr);
     Cluster *cluster = Cluster::cast(p);
     Resources *os_res = Resources::os_res[cluster->getStr("host_OS")];
-    assert(os_res != NULL);
+    assert(os_res != nullptr);
 
     string default_address =
         os_res->getResourceStr("/FWBuilderResources/Target/protocols/conntrack/default_address");
@@ -125,7 +125,7 @@ bool conntrackOptionsDialog::validate()
             QMessageBox::critical(
                 this, "Firewall Builder",
                 tr("Invalid IP address '%1'").arg(m_dialog->conntrack_address->text()),
-                tr("&Continue"), 0, 0,
+                tr("&Continue"), nullptr, nullptr,
                 0 );
             return false;
         }

src/libgui/freebsdAdvancedDialog.cpp

@@ -60,10 +60,10 @@ freebsdAdvancedDialog::freebsdAdvancedDialog(QWidget *parent,FWObject *o)
     obj=o;
 
     FWOptions *fwopt=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwopt!=NULL);
+    assert(fwopt!=nullptr);
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     QStringList threeStateMapping;
 
@@ -117,7 +117,7 @@ void freebsdAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions *fwopt=(Firewall::cast(new_state))->getOptionsObject();
-    assert(fwopt!=NULL);
+    assert(fwopt!=nullptr);
 
     data.saveAll(fwopt);
 

src/libgui/heartbeatOptionsDialog.cpp

@@ -50,13 +50,13 @@ heartbeatOptionsDialog::heartbeatOptionsDialog(QWidget *parent, FWObject *o)
     obj = o;
 
     FWOptions *gropt = FWOptions::cast(obj);
-    assert(gropt != NULL);
+    assert(gropt != nullptr);
     FWObject *p = obj;
-    while (p && Cluster::cast(p)==NULL) p = p->getParent();
+    while (p && Cluster::cast(p)==nullptr) p = p->getParent();
-    assert(p != NULL);
+    assert(p != nullptr);
     Cluster *cluster = Cluster::cast(p);
     Resources *os_res = Resources::os_res[cluster->getStr("host_OS")];
-    assert(os_res != NULL);
+    assert(os_res != nullptr);
 
     string default_address =
         os_res->getResourceStr(
@@ -126,7 +126,7 @@ bool heartbeatOptionsDialog::validate()
             QMessageBox::critical(
                 this, "Firewall Builder",
                 tr("Invalid IP address '%1'").arg(m_dialog->heartbeat_address->text()),
-                tr("&Continue"), 0, 0,
+                tr("&Continue"), nullptr, nullptr,
                 0 );
             return false;
         }

src/libgui/importAddressListWizard/ChooseObjectsPage.cpp

@@ -71,7 +71,7 @@ void ChooseObjectsPage::initializePage()
 
     } catch (FWException &ex)
     {
-        QMessageBox::critical( NULL , "Firewall Builder",
+        QMessageBox::critical( nullptr , "Firewall Builder",
                                ex.toString().c_str(),
                                QString::null,QString::null);
     }

src/libgui/importAddressListWizard/CreateObjectsPage.cpp

@@ -63,7 +63,7 @@ void CreateObjectsPage::initializePage()
     m_dialog->progressBar->setFormat("%v / %m");
     m_dialog->progressBar->setMaximum(objects.size() / 2);
 
-    FWObject *last_object = NULL;
+    FWObject *last_object = nullptr;
     QString name;
     QString addr;
     int counter = 1;
@@ -95,7 +95,7 @@ void CreateObjectsPage::initializePage()
         if (! type.isEmpty())
         {
             Address *obj = Address::cast(mw->createObject(type, name));
-            assert(obj!=NULL);
+            assert(obj!=nullptr);
             obj->setName(name.toUtf8().constData());
             obj->setAddress(InetAddr(addr.toStdString()));
             obj->setNetmask(InetAddr(InetAddr::getAllOnes()));

src/libgui/importFirewallConfigurationWizard/IC_FileNamePage.cpp

@@ -63,7 +63,7 @@ bool IC_FileNamePage::validatePage()
 
     if ( ! f.exists())
     {
-        QMessageBox::critical( NULL , "Firewall Builder",
+        QMessageBox::critical( nullptr , "Firewall Builder",
                                tr("File %1 does not exist").arg(file_name),
                                QString::null,QString::null);
         return false;
@@ -71,7 +71,7 @@ bool IC_FileNamePage::validatePage()
 
     if ( ! f.isReadable())
     {
-        QMessageBox::critical( NULL , "Firewall Builder",
+        QMessageBox::critical( nullptr , "Firewall Builder",
                                tr("Can not read file %1").arg(file_name),
                                QString::null,QString::null);
         return false;

src/libgui/importFirewallConfigurationWizard/IC_NetworkZonesPage.cpp

@@ -111,7 +111,7 @@ void IC_NetworkZonesPage::setNetworkZones()
     Firewall *fw = 
         dynamic_cast<ImportFirewallConfigurationWizard*>(wizard())->getFirewall();
 
-    if (fw == NULL) return;
+    if (fw == nullptr) return;
 
     // read and configure network zones
     list<FWObject*> all_interfaces = fw->getByTypeDeep(Interface::TYPENAME);
@@ -128,11 +128,11 @@ void IC_NetworkZonesPage::setNetworkZones()
         if ( ! ltwi.empty())
         {
             QTableWidgetItem *itm2 = ltwi[0];
-            assert(itm2!=NULL);
+            assert(itm2!=nullptr);
             int row = itm2->row();
             QComboBox *cb = dynamic_cast<QComboBox*>(
                 m_dialog->iface_nz_list->cellWidget(row, 3));
-            assert(cb!=NULL);
+            assert(cb!=nullptr);
             int network_zone_int_id =
                 cb->itemData(cb->currentIndex(), Qt::UserRole).toInt();
             if (network_zone_int_id != 0)

src/libgui/importFirewallConfigurationWizard/IC_ProgressPage.cpp

@@ -48,7 +48,7 @@ IC_ProgressPage::IC_ProgressPage(QWidget *parent) : QWizardPage(parent)
 {
     m_dialog = new Ui::IC_ProgressPage_q;
     m_dialog->setupUi(this);
-    importer = NULL;
+    importer = nullptr;
 
     errors_count = 0;
     warnings_count = 0;
@@ -76,7 +76,7 @@ IC_ProgressPage::~IC_ProgressPage()
 {
     disconnect(this, SLOT(logLine(QString)));
     disconnect(this, SLOT(importerFinished()));
-    if (importer != NULL && importer->isRunning()) importer->stop();
+    if (importer != nullptr && importer->isRunning()) importer->stop();
 }
 
 int IC_ProgressPage::nextId() const
@@ -103,20 +103,20 @@ bool IC_ProgressPage::validatePage()
                  << "importer=" << importer
                  << "isRunning=" << ((importer) ? importer->isRunning() : 0);
 
-    if (importer != NULL && importer->isRunning()) return false;
+    if (importer != nullptr && importer->isRunning()) return false;
     return true;
 }
 
 bool IC_ProgressPage::isComplete() const
 {
-    if (importer != NULL && importer->isRunning()) return false;
+    if (importer != nullptr && importer->isRunning()) return false;
     return true;
 }
 
 void IC_ProgressPage::importerDestroyed(QObject *obj)
 {
     if (fwbdebug_ic) qDebug() << "IC_ProgressPage::importerDestroyed() obj=" << obj;
-    if (obj == importer) importer = NULL;
+    if (obj == importer) importer = nullptr;
 }
 
 void IC_ProgressPage::initializePage()
@@ -124,7 +124,7 @@ void IC_ProgressPage::initializePage()
     if (fwbdebug_ic)
         qDebug() << "IC_ProgressPage::initializePage()";
 
-    if (importer != NULL && importer->isRunning())
+    if (importer != nullptr && importer->isRunning())
     {
         if (fwbdebug_ic) qDebug() << "importer is still runnig; stopping";
         importer->stop();
@@ -178,7 +178,7 @@ void IC_ProgressPage::cleanupPage()
     if (fwbdebug_ic) qDebug() << "IC_ProgressPage::cleanupPage()";
     disconnect(this, SLOT(logLine(QString)));
     disconnect(this, SLOT(importerFinished()));
-    if (importer != NULL && importer->isRunning()) importer->stop();
+    if (importer != nullptr && importer->isRunning()) importer->stop();
 //    if (importer != NULL && importer->isRunning()) importer->wait();
 }
 

src/libgui/importFirewallConfigurationWizard/ImportFirewallConfigurationWizard.cpp

@@ -53,7 +53,7 @@ using namespace libfwbuilder;
 ImportFirewallConfigurationWizard::ImportFirewallConfigurationWizard(
     QWidget *parent, FWObjectDatabase *_db) : QWizard(parent)
 {
-    fw = NULL;
+    fw = nullptr;
     db_orig = _db;
     db_copy = new FWObjectDatabase();
     db_copy->duplicate(_db, false);
@@ -104,7 +104,7 @@ void ImportFirewallConfigurationWizard::accept()
     if (fwbdebug) qDebug() << "ImportFirewallConfigurationWizard::accept()"
                            << "fw=" << fw;
 
-    if (fw != NULL && (platform == "pix" || platform == "fwsm"))
+    if (fw != nullptr && (platform == "pix" || platform == "fwsm"))
         dynamic_cast<IC_NetworkZonesPage*>(
             page(Page_NetworkZones))->setNetworkZones();
 

src/libgui/importFirewallConfigurationWizard/ImporterThread.cpp

@@ -64,7 +64,7 @@ ImporterThread::ImporterThread(QWidget *ui,
     this->firewallName = firewallName;
     this->fileName = fileName;
     this->deduplicate = deduplicate;
-    importer = NULL;
+    importer = nullptr;
     stopFlag = false;
     addStandardComments = false;
 }
@@ -98,7 +98,7 @@ void ImporterThread::run()
 
     std::istringstream instream(buffer.join("\n").toStdString());
 
-    importer = NULL;
+    importer = nullptr;
 
     if (platform == "iosacl") importer = new IOSImporter(
         lib, instream, logger, firewallName.toUtf8().constData());

src/libgui/instDialog_compile.cpp

@@ -81,7 +81,7 @@ bool instDialog::runCompiler(Firewall *fw)
     currentProgressBar->setFormat("%v/%m");
 
     QTreeWidgetItem* item = opListMapping[fw->getId()];
-    assert(item!=NULL);
+    assert(item!=nullptr);
 
     currentFWLabel->setText(QString::fromUtf8(fw->getName().c_str()));
     m_dialog->fwWorkList->scrollToItem(item);

src/libgui/instDialog_installer.cpp

@@ -98,7 +98,7 @@ bool instDialog::runInstaller(Firewall *fw, bool installing_many_firewalls)
         currentProgressBar->setFormat("%v/%m");
 
         QTreeWidgetItem* item = opListMapping[fw->getId()];
-        assert(item!=NULL);
+        assert(item!=nullptr);
 
         currentFWLabel->setText(QString::fromUtf8(fw->getName().c_str()));
         m_dialog->fwWorkList->scrollToItem(item);
@@ -113,7 +113,7 @@ bool instDialog::runInstaller(Firewall *fw, bool installing_many_firewalls)
         if (fwbdebug)
             qDebug() << "instDialog::runInstaller:" << " cnf.user=" << cnf.user;
 
-        if (installer!=NULL)
+        if (installer!=nullptr)
             delete installer;
 
         if (isCiscoFamily())
@@ -161,13 +161,13 @@ void instDialog::stopInstall()
     proc.terminate(); // try to close proc.
     QTimer::singleShot(1000, &proc, SLOT(kill())); //if it doesn't respond, kill it
 
-    if (installer != NULL)
+    if (installer != nullptr)
     {
         if (fwbdebug)
             qDebug() << "instDialog::stopInstall  killing installer";
         installer->terminate();
         delete installer;
-        installer = NULL;
+        installer = nullptr;
     }
 
     // to terminate whole install sequence rather than just current

src/libgui/instDialog_ui_ops.cpp

@@ -143,7 +143,7 @@ QTreeWidgetItem* instDialog::createTreeItem(QTreeWidgetItem* parent,
 
     // Mark cluster members
     // If parent!=NULL, new tree item corresponds to the cluster member
-    item->setData(1, Qt::UserRole, QVariant(parent!=NULL));
+    item->setData(1, Qt::UserRole, QVariant(parent!=nullptr));
 
     // it is useful to know how many members does this cluster have. If this is
     // not a cluster, store 0
@@ -196,8 +196,8 @@ void instDialog::setFlags(QTreeWidgetItem* item)
     bool install_only_on_primary_member = Resources::getTargetCapabilityBool(
         platform, "install_only_on_primary");
 
-    Cluster *cluster = NULL;
+    Cluster *cluster = nullptr;
-    FWObject *master_interface = NULL;
+    FWObject *master_interface = nullptr;
 
     if (parent)
     {
@@ -250,7 +250,7 @@ void instDialog::setFlags(QTreeWidgetItem* item)
 
             // If this platform requires installation only on
             // the master, disable and uncheck checkbox for the standby.
-            if (install_only_on_primary_member && master_interface != NULL)
+            if (install_only_on_primary_member && master_interface != nullptr)
             {
                 QString txt = item->text(0);
                 if (master_interface->isChildOf(fw))
@@ -262,12 +262,12 @@ void instDialog::setFlags(QTreeWidgetItem* item)
                     // Standby
                     item->setText(0, QString("%1 (standby)").arg(txt));
                     item->setCheckState(INSTALL_CHECKBOX_COLUMN, Qt::Unchecked);
-                    item->setFlags(0);
+                    item->setFlags(nullptr);
                 }
             }
         }
 
-        if (cluster==NULL)
+        if (cluster==nullptr)
         {
             // we are adding firewall that is not cluster member, it
             // needs "compile" checkbox
@@ -572,7 +572,7 @@ void instDialog::fillCompileSelectList()
     {
         cl = *i;
 
-        QTreeWidgetItem* cluster_item = createTreeItem(NULL, cl);
+        QTreeWidgetItem* cluster_item = createTreeItem(nullptr, cl);
         m_dialog->selectTable->addTopLevelItem(cluster_item);
 
         list<Firewall*> members;
@@ -591,7 +591,7 @@ void instDialog::fillCompileSelectList()
          i!=working_list_of_firewalls.end(); ++i)
     {
         fw = *i;
-        QTreeWidgetItem* fw_item = createTreeItem(NULL, fw);
+        QTreeWidgetItem* fw_item = createTreeItem(nullptr, fw);
         m_dialog->selectTable->addTopLevelItem(fw_item);
     }
 
@@ -706,13 +706,13 @@ void instDialog::cancelClicked()
         proc.kill();
     }
 
-    if (installer != NULL)
+    if (installer != nullptr)
     {
         if (fwbdebug)
             qDebug() << "instDialog::cancelClicked  killing installer";
         installer->terminate();
         delete installer;
-        installer = NULL;
+        installer = nullptr;
     }
 
     QDialog::reject();
@@ -906,14 +906,14 @@ void instDialog::selectAllFirewalls()
     if (fwbdebug) qDebug("instDialog::selectAllFirewalls");
     setSelectStateAll(INSTALL_CHECKBOX_COLUMN, Qt::Checked);
     setSelectStateAll(COMPILE_CHECKBOX_COLUMN, Qt::Checked);
-    tableItemChanged(NULL, 0);
+    tableItemChanged(nullptr, 0);
 }
 
 void instDialog::deselectAllFirewalls()
 {
     setSelectStateAll(INSTALL_CHECKBOX_COLUMN, Qt::Unchecked);
     setSelectStateAll(COMPILE_CHECKBOX_COLUMN, Qt::Unchecked);
-    tableItemChanged(NULL, 0);
+    tableItemChanged(nullptr, 0);
 }
 
 void instDialog::setSelectStateAll(int column, Qt::CheckState select)
@@ -975,7 +975,7 @@ void instDialog::fillCompileUIList()
     {
         f = (*i);
         item = new InstallFirewallViewItem(
-            NULL,//m_dialog->fwWorkList,
+            nullptr,//m_dialog->fwWorkList,
             QString::fromUtf8(f->getName().c_str()),
             false);
 
@@ -1023,7 +1023,7 @@ void instDialog::fillInstallUIList()
     {
         f = (*i);
         item = new InstallFirewallViewItem(
-            NULL,
+            nullptr,
             QString::fromUtf8(f->getName().c_str()),
             false);
 
@@ -1106,14 +1106,14 @@ bool instDialog::getInstOptions(Firewall *fw, bool installing_many_firewalls)
         {
             canceledAll = true;
             delete inst_opt_dlg;
-            inst_opt_dlg = NULL;
+            inst_opt_dlg = nullptr;
             return false;
         }
 
         if (resultCode == QDialog::Rejected)
         {
             delete inst_opt_dlg;
-            inst_opt_dlg = NULL;
+            inst_opt_dlg = nullptr;
             return false;
         }
 
@@ -1156,7 +1156,7 @@ void instDialog::readInstallerOptionsFromFirewallObject(Firewall *fw)
                  << "fw=" << fw
                  << QString( (fw) ? QString::fromUtf8(fw->getName().c_str()) : "");
 
-    FWOptions *fwopt = NULL;
+    FWOptions *fwopt = nullptr;
     if (fw)
     {
         fwopt = fw->getOptionsObject();
@@ -1300,7 +1300,7 @@ void instDialog::readInstallerOptionsFromDialog(Firewall *fw,
 
     QString adm_user;
 
-    FWOptions *fwopt = NULL;
+    FWOptions *fwopt = nullptr;
     if (fw)
     {
         fwopt = cnf.fwobj->getOptionsObject();
@@ -1440,12 +1440,12 @@ void instDialog::closeEvent(QCloseEvent *)
             qDebug() << "instDialog::closeEvent  killing process";
         proc.kill();
     }
-    if (installer != NULL)
+    if (installer != nullptr)
     {
         if (fwbdebug)
             qDebug() << "instDialog::closeEvent  killing installer";
         installer->terminate();
         delete installer;
-        installer = NULL;
+        installer = nullptr;
     }
 }

src/libgui/iosAdvancedDialog.cpp

@@ -62,10 +62,10 @@ iosAdvancedDialog::iosAdvancedDialog(QWidget *parent,FWObject *o)
     obj=o;
 
     FWOptions *fwoptions=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
 /* Page "General" */
     data.registerOption( m_dialog->ios_set_host_name  , fwoptions,  "ios_set_host_name" );
@@ -87,7 +87,7 @@ void iosAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* fwoptions = Firewall::cast(new_state)->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     data.saveAll(fwoptions);
 

src/libgui/iosaclAdvancedDialog.cpp

@@ -79,7 +79,7 @@ iosaclAdvancedDialog::iosaclAdvancedDialog(QWidget *parent,FWObject *o)
     obj=o;
 
     FWOptions *fwoptions=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     string vers="version_"+obj->getStr("version");
     string platform = obj->getStr("platform");   // should be 'iosacl'
@@ -193,7 +193,7 @@ iosaclAdvancedDialog::iosaclAdvancedDialog(QWidget *parent,FWObject *o)
     }
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     data.registerOption(m_dialog->ipv4before_2,    fwoptions,
                         "ipv4_6_order",
@@ -324,10 +324,10 @@ void iosaclAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* options = Firewall::cast(new_state)->getOptionsObject();
-    assert(options!=NULL);
+    assert(options!=nullptr);
 
     Management *mgmt = (Firewall::cast(new_state))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     data.saveAll(options);
 

src/libgui/ipcopAdvancedDialog.cpp

@@ -74,10 +74,10 @@ ipcopAdvancedDialog::ipcopAdvancedDialog(QWidget *parent,FWObject *o)
     setWindowTitle(QObject::tr("%1 advanced settings").arg(description.c_str()));
 
     FWOptions *fwoptions=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     /*
     fwoptions->setStr("firewall_dir", "/etc/rc.d/");
@@ -182,10 +182,10 @@ void ipcopAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* fwoptions = Firewall::cast(new_state)->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     Management *mgmt=(Firewall::cast(new_state))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     data.saveAll(fwoptions);
 

src/libgui/ipcoposAdvancedDialog.cpp

@@ -67,10 +67,10 @@ ipcoposAdvancedDialog::ipcoposAdvancedDialog(QWidget *parent,FWObject *o)
     setWindowTitle(QObject::tr("%1 advanced settings").arg(description.c_str()));
 
     FWOptions *fwopt=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwopt!=NULL);
+    assert(fwopt!=nullptr);
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     QStringList threeStateMapping;
 
@@ -190,7 +190,7 @@ void ipcoposAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* fwoptions = Firewall::cast(new_state)->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     data.saveAll(fwoptions);
 

src/libgui/ipfAdvancedDialog.cpp

@@ -65,10 +65,10 @@ ipfAdvancedDialog::ipfAdvancedDialog(QWidget *parent,FWObject *o)
     QStringList slm;
 
     FWOptions *fwopt=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwopt!=NULL);
+    assert(fwopt!=nullptr);
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     if (fwbdebug)
         qDebug("%s",Resources::getTargetOptionStr(
@@ -164,10 +164,10 @@ void ipfAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* fwoptions = Firewall::cast(new_state)->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     Management *mgmt = (Firewall::cast(new_state))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     data.saveAll(fwoptions);
 

src/libgui/ipfwAdvancedDialog.cpp

@@ -64,10 +64,10 @@ ipfwAdvancedDialog::ipfwAdvancedDialog(QWidget *parent,FWObject *o)
     obj=o;
 
     FWOptions *fwopt=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwopt!=NULL);
+    assert(fwopt!=nullptr);
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     if (fwbdebug)
         qDebug("%s",Resources::getTargetOptionStr(
@@ -144,10 +144,10 @@ void ipfwAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* fwoptions = Firewall::cast(new_state)->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     Management *mgmt = (Firewall::cast(new_state))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     data.saveAll(fwoptions);
 

src/libgui/iptAdvancedDialog.cpp

@@ -70,10 +70,10 @@ iptAdvancedDialog::iptAdvancedDialog(QWidget *parent,FWObject *o)
     setWindowTitle(QObject::tr("%1 advanced settings").arg(description.c_str()));
 
     FWOptions *fwoptions=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     if (fwbdebug)
         qDebug("%s",Resources::getTargetOptionStr(
@@ -246,10 +246,10 @@ void iptAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* fwoptions = Firewall::cast(new_state)->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     Management *mgmt = (Firewall::cast(new_state))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     data.saveAll(fwoptions);
 

src/libgui/junosAdvancedDialog.cpp

@@ -62,10 +62,10 @@ junosAdvancedDialog::junosAdvancedDialog(QWidget *parent,FWObject *o)
     obj=o;
 
     FWOptions *fwoptions=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
 /* Page "General" */
     data.registerOption( m_dialog->junos_set_host_name  , fwoptions,  "junos_set_host_name" );
@@ -87,7 +87,7 @@ void junosAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* fwoptions = Firewall::cast(new_state)->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     data.saveAll(fwoptions);
 

src/libgui/junosaclAdvancedDialog.cpp

@@ -79,7 +79,7 @@ junosaclAdvancedDialog::junosaclAdvancedDialog(QWidget *parent,FWObject *o)
     obj=o;
 
     FWOptions *fwoptions=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     string vers="version_"+obj->getStr("version");
     string platform = obj->getStr("platform");   // should be 'junosacl'
@@ -193,7 +193,7 @@ junosaclAdvancedDialog::junosaclAdvancedDialog(QWidget *parent,FWObject *o)
     }
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     data.registerOption(m_dialog->ipv4before_2,    fwoptions,
                         "ipv4_6_order",
@@ -315,10 +315,10 @@ void junosaclAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* options = Firewall::cast(new_state)->getOptionsObject();
-    assert(options!=NULL);
+    assert(options!=nullptr);
 
     Management *mgmt = (Firewall::cast(new_state))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     data.saveAll(options);
 

src/libgui/linksysAdvancedDialog.cpp

@@ -61,10 +61,10 @@ linksysAdvancedDialog::linksysAdvancedDialog(QWidget *parent,FWObject *o)
     obj=o;
 
     FWOptions *fwopt=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwopt!=NULL);
+    assert(fwopt!=nullptr);
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 /*
  * since v2.0.3 we do not need to know shell prompt on linksys. Will
  * remove the page completely when code becomes stable.
@@ -139,7 +139,7 @@ void linksysAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* fwoptions = Firewall::cast(new_state)->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     data.saveAll(fwoptions);
 
@@ -157,7 +157,7 @@ void linksysAdvancedDialog::reject()
 void linksysAdvancedDialog::setDefaultPrompts()
 {
     FWOptions *fwopt=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwopt!=NULL);
+    assert(fwopt!=nullptr);
     m_dialog->linksys_prompt1->setText(
         Resources::getTargetOptionStr("sveasoft","default/prompt1").c_str() );
     m_dialog->linksys_prompt2->setText(

src/libgui/linux24AdvancedDialog.cpp

@@ -68,10 +68,10 @@ linux24AdvancedDialog::linux24AdvancedDialog(QWidget *parent,FWObject *o)
     setWindowTitle(QObject::tr("%1 advanced settings").arg(description.c_str()));
 
     FWOptions *fwopt=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwopt!=NULL);
+    assert(fwopt!=nullptr);
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     QStringList threeStateMapping;
 
@@ -205,10 +205,10 @@ void linux24AdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* fwoptions = Firewall::cast(new_state)->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     Management *mgmt = (Firewall::cast(new_state))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     data.saveAll(fwoptions);
 

src/libgui/linux24IfaceOptsDialog.cpp

@@ -54,7 +54,7 @@ linux24IfaceOptsDialog::linux24IfaceOptsDialog(QWidget *parent, FWObject *o)
     obj = o;
 
     FWOptions *ifopt = (Interface::cast(obj))->getOptionsObject();
-    cluster_interface = (Cluster::cast(obj->getParent()) != NULL);
+    cluster_interface = (Cluster::cast(obj->getParent()) != nullptr);
 
     setInterfaceTypes(m_dialog->iface_type, Interface::cast(obj),
                       ifopt->getStr("type").c_str());
@@ -105,7 +105,7 @@ void linux24IfaceOptsDialog::accept()
     // new_state  is a copy of the interface object
     FWObject* new_state = cmd->getNewState();
     FWOptions* ifopt = Interface::cast(new_state)->getOptionsObject();
-    assert(ifopt!=NULL);
+    assert(ifopt!=nullptr);
 
     if (cluster_interface)
     {
@@ -182,7 +182,7 @@ bool linux24IfaceOptsDialog::validate()
     QString combobox = m_dialog->iface_type->currentText();
     QString type = m_dialog->iface_type->itemData(
         m_dialog->iface_type->currentIndex()).toString();
-    QWidget *focus = NULL;
+    QWidget *focus = nullptr;
     QString message;
 
     if (type == "vrrp")

src/libgui/listOfLibrariesModel.cpp

@@ -59,17 +59,17 @@ void ListOfLibrariesModel::addStaticItems()
 Qt::ItemFlags ListOfLibrariesModel::flags(const QModelIndex &index) const
 {
     int row = index.row();
-    if (row < 0 || row >= items.size()) return 0;
+    if (row < 0 || row >= items.size()) return nullptr;
     
     FWObject *lib = items.at(index.row()).lib;
-    if (lib == NULL) return Qt::ItemIsEnabled;
+    if (lib == nullptr) return Qt::ItemIsEnabled;
     else return QStringListModel::flags(index);
 }
 
 bool ListOfLibrariesModel::insertRows(int row, int count, const QModelIndex & parent)
 {
     for (int c=0; c < count; ++c)
-        items.insert(row, _item_data("", NULL, NULL));
+        items.insert(row, _item_data("", nullptr, nullptr));
     return QStringListModel::insertRows(row, count, parent);
 }
 
@@ -103,7 +103,7 @@ void ListOfLibrariesModel::sort(int column, Qt::SortOrder order)
     for (int i=0; i<rowCount(); ++i)
     {
         FWObject *l = getLibrary(i);
-        if (l==NULL) continue;
+        if (l==nullptr) continue;
         list.append(items.at(i));
     }
 
@@ -115,7 +115,7 @@ void ListOfLibrariesModel::sort(int column, Qt::SortOrder order)
     int pos = 0;
     foreach(QString itm, top_static_items)
     {
-        list.insert(pos, _item_data(itm, NULL, NULL));
+        list.insert(pos, _item_data(itm, nullptr, nullptr));
         pos++;
     }
 
@@ -127,7 +127,7 @@ void ListOfLibrariesModel::sort(int column, Qt::SortOrder order)
         QString text = list.at(i).name;
         insertRows(i, 1);
         QModelIndex idx = index(i, 0);
-        QStringListModel::setData(idx, indentLibName(text, list.at(i).lib!=NULL), Qt::DisplayRole);
+        QStringListModel::setData(idx, indentLibName(text, list.at(i).lib!=nullptr), Qt::DisplayRole);
         items[i] = list[i];
     }
 }
@@ -157,7 +157,7 @@ FWObject* ListOfLibrariesModel::getLibrary(QModelIndex idx)
 
 FWObject* ListOfLibrariesModel::getLibrary(int row)
 {
-    if (row < 0 || row >= items.size()) return NULL;
+    if (row < 0 || row >= items.size()) return nullptr;
     return items[row].lib;
 }
 
@@ -168,7 +168,7 @@ ObjectTreeView* ListOfLibrariesModel::getTreeWidget(QModelIndex idx)
 
 ObjectTreeView* ListOfLibrariesModel::getTreeWidget(int row)
 {
-    if (row < 0 || row >= items.size()) return NULL;
+    if (row < 0 || row >= items.size()) return nullptr;
     return items[row].tree;
 }
 
@@ -177,7 +177,7 @@ void ListOfLibrariesModel::setData(QModelIndex idx, const QString &name, FWObjec
     int row = idx.row();
     if (row < 0 || row >= items.size()) return ;
     items[row] = _item_data(name, lib, otv);
-    QStringListModel::setData(idx, indentLibName(name, lib!=NULL), Qt::DisplayRole);
+    QStringListModel::setData(idx, indentLibName(name, lib!=nullptr), Qt::DisplayRole);
 }
 
 void ListOfLibrariesModel::setName(QModelIndex idx, const QString &name)
@@ -185,7 +185,7 @@ void ListOfLibrariesModel::setName(QModelIndex idx, const QString &name)
     int row = idx.row();
     if (row < 0 || row >= items.size()) return ;
     items[row].name = name;
-    QStringListModel::setData(idx, indentLibName(name, items.at(row).lib!=NULL), Qt::DisplayRole);
+    QStringListModel::setData(idx, indentLibName(name, items.at(row).lib!=nullptr), Qt::DisplayRole);
 }
 
 QString ListOfLibrariesModel::indentLibName(const QString &name, bool indent)

src/libgui/macosxAdvancedDialog.cpp

@@ -60,10 +60,10 @@ macosxAdvancedDialog::macosxAdvancedDialog(QWidget *parent,FWObject *o)
     obj=o;
 
     FWOptions *fwopt=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwopt!=NULL);
+    assert(fwopt!=nullptr);
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     QStringList threeStateMapping;
 
@@ -107,7 +107,7 @@ void macosxAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* fwoptions = Firewall::cast(new_state)->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     data.saveAll(fwoptions);
 

src/libgui/networkZoneManager.cpp

@@ -74,10 +74,10 @@ void NetworkZoneManager::load(FWObjectDatabase *_db)
         if ( library->getId()==FWObjectDatabase::DELETED_OBJECTS_ID ) continue;
 
         o1 = library->findObjectByName(ObjectGroup::TYPENAME, "Objects");
-        assert(o1!=NULL);
+        assert(o1!=nullptr);
 
         o2 = o1->findObjectByName(ObjectGroup::TYPENAME, "Groups");
-        if (o2==NULL)
+        if (o2==nullptr)
         {
             if (fwbdebug)
                 qDebug() << "NetworkZoneManager::NetworkZoneManager():"
@@ -96,7 +96,7 @@ void NetworkZoneManager::load(FWObjectDatabase *_db)
         }
 
         o2=o1->findObjectByName(ObjectGroup::TYPENAME,"Networks");
-        if (o2==NULL)
+        if (o2==nullptr)
         {
             if (fwbdebug)
                 qDebug() << "NetworkZoneManager::NetworkZoneManager():"

src/libgui/newClusterDialog.cpp

@@ -55,7 +55,7 @@ using namespace std;
 
 
 newClusterDialog::newClusterDialog(QWidget *parentw, FWObject *_p)
-    : QDialog(parentw), ncl(NULL), fwlist(NULL), tmpldb(NULL)
+    : QDialog(parentw), ncl(nullptr), fwlist(nullptr), tmpldb(nullptr)
 {
     parent = _p;
     db = parent->getRoot();
@@ -307,7 +307,7 @@ void newClusterDialog::finishClicked()
     if (unloadTemplatesLib)
     {
         delete tmpldb;
-        tmpldb = NULL;
+        tmpldb = nullptr;
 
         unloadTemplatesLib = false;
     }

src/libgui/newClusterDialog_create.cpp

@@ -60,7 +60,7 @@ void newClusterDialog::createNewCluster()
         this->m_dialog->interfaceSelector->getInterfaces();
     
     typedef QPair<Firewall*, bool> fwpair;
-    Firewall *master = NULL;
+    Firewall *master = nullptr;
     QList<QPair<Firewall*, bool> > member_firewalls = 
         this->m_dialog->firewallSelector->getSelectedFirewalls();
     foreach(fwpair member, member_firewalls)
@@ -71,7 +71,7 @@ void newClusterDialog::createNewCluster()
     FWObject *o;
     o = db->create(Cluster::TYPENAME);
 
-    if (o == NULL)
+    if (o == nullptr)
     {
         QDialog::accept();
         return;
@@ -196,7 +196,7 @@ void newClusterDialog::createNewCluster()
 
             failover_grp->addRef(member_intf);
 
-            if (master!=NULL && member_fw == master)
+            if (master!=nullptr && member_fw == master)
             {
                 std::string masteriface_id =
                     FWObjectDatabase::getStringId(member_intf->getId());
@@ -220,7 +220,7 @@ void newClusterDialog::createNewCluster()
         StateSyncClusterGroup::cast(state_sync_members));
 
     // Copy rule sets if requested
-    Firewall *source = NULL;
+    Firewall *source = nullptr;
     foreach (QRadioButton* btn, copy_rules_from_buttons.keys())
     {
         if (btn->isChecked() && btn != noPolicy)
@@ -236,7 +236,7 @@ void newClusterDialog::createNewCluster()
     QString filename = pp->getFileName();
 
 
-    if (source == NULL)
+    if (source == nullptr)
     {
         if (fwbdebug)
             qDebug() << "newClusterDialog::createNewCluster() checkpoint 5";
@@ -256,9 +256,9 @@ void newClusterDialog::createNewCluster()
     // <source>, need to close it because we are about to delete that
     // rule set object
 
-    RuleSet* current_ruleset = NULL;
+    RuleSet* current_ruleset = nullptr;
     RuleSetView* rsv = pp->getCurrentRuleSetView();
-    RuleSetModel* md = NULL;
+    RuleSetModel* md = nullptr;
     if (rsv)
     {
         md = (RuleSetModel*)rsv->model();
@@ -283,7 +283,7 @@ void newClusterDialog::createNewCluster()
 
         string name_bak = fw->getName() + "-bak";
         FWCmdAddObject *cmd = new FWCmdAddObject(
-            mw->activeProject(), fwgroup, NULL,
+            mw->activeProject(), fwgroup, nullptr,
             QString("Create new Firewall %1")
             .arg(QString::fromUtf8(name_bak.c_str())));
         cmd->setNeedTreeReload(true);

src/libgui/newFirewallDialog_from_template.cpp

@@ -75,7 +75,7 @@ void newFirewallDialog::createFirewallFromTemplate()
 {
     QListWidgetItem *itm = m_dialog->templateList->currentItem();
     FWObject *template_fw = templates[itm];
-    assert (template_fw!=NULL);
+    assert (template_fw!=nullptr);
 
     string platform = readPlatform(m_dialog->platform).toLatin1().constData();
     string host_os = readHostOS(m_dialog->hostOS).toLatin1().constData();

src/libgui/nxosAdvancedDialog.cpp

@@ -62,10 +62,10 @@ nxosAdvancedDialog::nxosAdvancedDialog(QWidget *parent,FWObject *o)
     obj=o;
 
     FWOptions *fwoptions=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
 /* Page "General" */
     data.registerOption( m_dialog->nxos_set_host_name  , fwoptions,  "nxos_set_host_name" );
@@ -87,7 +87,7 @@ void nxosAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* fwoptions = Firewall::cast(new_state)->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     data.saveAll(fwoptions);
 

src/libgui/nxosaclAdvancedDialog.cpp

@@ -79,7 +79,7 @@ nxosaclAdvancedDialog::nxosaclAdvancedDialog(QWidget *parent,FWObject *o)
     obj=o;
 
     FWOptions *fwoptions=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     string vers="version_"+obj->getStr("version");
     string platform = obj->getStr("platform");   // should be 'nxosacl'
@@ -193,7 +193,7 @@ nxosaclAdvancedDialog::nxosaclAdvancedDialog(QWidget *parent,FWObject *o)
     }
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     data.registerOption(m_dialog->ipv4before_2,    fwoptions,
                         "ipv4_6_order",
@@ -327,10 +327,10 @@ void nxosaclAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* options = Firewall::cast(new_state)->getOptionsObject();
-    assert(options!=NULL);
+    assert(options!=nullptr);
 
     Management *mgmt = (Firewall::cast(new_state))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     data.saveAll(options);
 

src/libgui/openaisOptionsDialog.cpp

@@ -51,13 +51,13 @@ openaisOptionsDialog::openaisOptionsDialog(QWidget *parent, FWObject *o)
     obj = o;
 
     FWOptions *gropt = FWOptions::cast(obj);
-    assert(gropt != NULL);
+    assert(gropt != nullptr);
     FWObject *p = obj;
-    while (p && Cluster::cast(p)==NULL) p = p->getParent();
+    while (p && Cluster::cast(p)==nullptr) p = p->getParent();
-    assert(p != NULL);
+    assert(p != nullptr);
     Cluster *cluster = Cluster::cast(p);
     Resources *os_res = Resources::os_res[cluster->getStr("host_OS")];
-    assert(os_res != NULL);
+    assert(os_res != nullptr);
 
     string default_address =
         os_res->getResourceStr(
@@ -123,7 +123,7 @@ bool openaisOptionsDialog::validate()
             QMessageBox::critical(
                 this, "Firewall Builder",
                 tr("Invalid IP address '%1'").arg(m_dialog->openais_address->text()),
-                tr("&Continue"), 0, 0,
+                tr("&Continue"), nullptr, nullptr,
                 0 );
             return false;
         }

src/libgui/openbsdAdvancedDialog.cpp

@@ -61,10 +61,10 @@ openbsdAdvancedDialog::openbsdAdvancedDialog(QWidget *parent,FWObject *o)
     obj=o;
 
     FWOptions *fwopt=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwopt!=NULL);
+    assert(fwopt!=nullptr);
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     QStringList threeStateMapping;
 
@@ -117,10 +117,10 @@ void openbsdAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* fwoptions = Firewall::cast(new_state)->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     Management *mgmt = (Firewall::cast(new_state))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     data.saveAll(fwoptions);
 

src/libgui/pfAdvancedDialog.cpp

@@ -67,10 +67,10 @@ pfAdvancedDialog::pfAdvancedDialog(QWidget *parent,FWObject *o)
     string version = obj->getStr("version");
 
     FWOptions *fwopt=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwopt!=NULL);
+    assert(fwopt!=nullptr);
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     if (fwbdebug)
         qDebug("%s", Resources::getTargetOptionStr(
@@ -460,10 +460,10 @@ void pfAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* fwoptions = Firewall::cast(new_state)->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     Management *mgmt = (Firewall::cast(new_state))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     data.saveAll(fwoptions);
 

src/libgui/pfsyncOptionsDialog.cpp

@@ -49,7 +49,7 @@ pfsyncOptionsDialog::pfsyncOptionsDialog(QWidget *parent, FWObject *o)
     obj = o;
 
     FWOptions *gropt = FWOptions::cast(obj);
-    assert(gropt != NULL);
+    assert(gropt != nullptr);
     
     data.registerOption(m_dialog->syncpeer,
                         gropt,

src/libgui/pixAdvancedDialog.cpp

@@ -170,7 +170,7 @@ pixAdvancedDialog::pixAdvancedDialog(QWidget*parent, FWObject *o)
     syslogFacilityMapping.push_back("23");
 
     FWOptions *fwoptions = (Firewall::cast(obj))->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
 /* Page Script */
 
@@ -193,7 +193,7 @@ pixAdvancedDialog::pixAdvancedDialog(QWidget*parent, FWObject *o)
     }
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     data.registerOption( m_dialog->short_script, fwoptions, "short_script");
 
@@ -371,137 +371,137 @@ pixAdvancedDialog::pixAdvancedDialog(QWidget*parent, FWObject *o)
     allFixups.push_back(fixupControl(
                             m_dialog->pix_ctiqbe_switch,
                             m_dialog->pix_ctiqbe_port,
-                            NULL,
+                            nullptr,
-                            NULL,
+                            nullptr,
                             "ctiqbe_fixup", "ctiqbe", 0));
     allFixups.push_back(fixupControl(
                             m_dialog->pix_dns_switch, 
                             m_dialog->pix_dns_max_length, 
-                            NULL, 
+                            nullptr, 
-                            NULL, 
+                            nullptr, 
                             "dns_fixup", "dns", 1));
     allFixups.push_back(fixupControl(
                             m_dialog->pix_espike_switch, 
-                            NULL, 
+                            nullptr, 
-                            NULL, 
+                            nullptr, 
-                            NULL, 
+                            nullptr, 
                             "espike_fixup", "esp-ike", 2));
     allFixups.push_back(fixupControl(
                             m_dialog->pix_ftp_switch, 
                             m_dialog->pix_ftp_port, 
-                            NULL, 
+                            nullptr, 
                             m_dialog->pix_ftp_strict, 
                             "ftp_fixup", "ftp", 3));
     allFixups.push_back(fixupControl(
                             m_dialog->pix_h323h225_switch, 
                             m_dialog->pix_h323h225_port1, 
                             m_dialog->pix_h323h225_port2, 
-                            NULL, 
+                            nullptr, 
                             "h323_h225_fixup", "h323 h225", 4));
     allFixups.push_back(fixupControl(
                             m_dialog->pix_h323ras_switch, 
                             m_dialog->pix_h323ras_port1, 
                             m_dialog->pix_h323ras_port2, 
-                            NULL, 
+                            nullptr, 
                             "h323_ras_fixup", "h323 ras", 5));
     allFixups.push_back(fixupControl(
                             m_dialog->pix_http_switch, 
                             m_dialog->pix_http_port1, 
                             m_dialog->pix_http_port2, 
-                            NULL, 
+                            nullptr, 
                             "http_fixup", "http", 6));
     allFixups.push_back(fixupControl(
                             m_dialog->pix_icmperror_switch, 
-                            NULL, 
+                            nullptr, 
-                            NULL, 
+                            nullptr, 
-                            NULL, 
+                            nullptr, 
                             "icmp_error_fixup", "icmp error", 7));
     allFixups.push_back(fixupControl(
                             m_dialog->pix_ils_switch, 
                             m_dialog->pix_ils_port1, 
                             m_dialog->pix_ils_port2, 
-                            NULL, 
+                            nullptr, 
                             "ils_fixup", "ils", 8));
     allFixups.push_back(fixupControl(
                             m_dialog->pix_mgcp_switch, 
                             m_dialog->pix_mgcp_gateway_port, 
                             m_dialog->pix_mgcp_call_agent_port, 
-                            NULL, 
+                            nullptr, 
                             "mgcp_fixup", "mgcp", 9));
     allFixups.push_back(fixupControl(
                             m_dialog->pix_pptp_switch, 
                             m_dialog->pix_pptp_port, 
-                            NULL, 
+                            nullptr, 
-                            NULL, 
+                            nullptr, 
                             "pptp_fixup", "pptp", 10));
     allFixups.push_back(fixupControl(
                             m_dialog->pix_rsh_switch, 
                             m_dialog->pix_rsh_port1, 
-                            NULL, 
+                            nullptr, 
-                            NULL, 
+                            nullptr, 
                             "rsh_fixup", "rsh", 11));
     allFixups.push_back(fixupControl(
                             m_dialog->pix_rtsp_switch, 
                             m_dialog->pix_rtsp_port, 
-                            NULL, 
+                            nullptr, 
-                            NULL, 
+                            nullptr, 
                             "rtsp_fixup", "rtsp", 12));
     allFixups.push_back(fixupControl(
                             m_dialog->pix_sip_switch, 
                             m_dialog->pix_sip_port1, 
                             m_dialog->pix_sip_port2, 
-                            NULL, 
+                            nullptr, 
                             "sip_fixup", "sip", 13));
     allFixups.push_back(fixupControl(
                             m_dialog->pix_sipudp_switch, 
                             m_dialog->pix_sip_udp_port1, 
-                            NULL, 
+                            nullptr, 
-                            NULL, 
+                            nullptr, 
                             "sip_udp_fixup", "sip udp", 14));
     allFixups.push_back(fixupControl(
                             m_dialog->pix_skinny_switch, 
                             m_dialog->pix_skinny_port1, 
                             m_dialog->pix_skinny_port2, 
-                            NULL, 
+                            nullptr, 
                             "skinny_fixup", "skinny", 15));
     allFixups.push_back(fixupControl(
                             m_dialog->pix_smtp_switch, 
                             m_dialog->pix_smtp_port1, 
                             m_dialog->pix_smtp_port2, 
-                            NULL, 
+                            nullptr, 
                             "smtp_fixup", "smtp", 16));
     allFixups.push_back(fixupControl(
                             m_dialog->pix_sqlnet_switch, 
                             m_dialog->pix_sqlnet_port1, 
                             m_dialog->pix_sqlnet_port2, 
-                            NULL, 
+                            nullptr, 
                             "sqlnet_fixup", "sqlnet", 17));
     allFixups.push_back(fixupControl(
                             m_dialog->pix_tftp_switch, 
                             m_dialog->pix_tftp_port, 
-                            NULL, 
+                            nullptr, 
-                            NULL, 
+                            nullptr, 
                             "tftp_fixup", "tftp", 18));
 
     allFixups.push_back(fixupControl(
                             m_dialog->pix_ip_options_eool_switch, 
-                            NULL,
+                            nullptr,
-                            NULL, 
+                            nullptr, 
-                            NULL, 
+                            nullptr, 
                             "ip_options_eool_fixup", "IP options", 19));
 
     allFixups.push_back(fixupControl(
                             m_dialog->pix_ip_options_nop_switch, 
-                            NULL,
+                            nullptr,
-                            NULL, 
+                            nullptr, 
-                            NULL, 
+                            nullptr, 
                             "ip_options_nop_fixup", "IP options", 20));
 
     allFixups.push_back(fixupControl(
                             m_dialog->pix_ip_options_rtralt_switch, 
-                            NULL,
+                            nullptr,
-                            NULL, 
+                            nullptr, 
-                            NULL, 
+                            nullptr, 
                             "ip_options_rtralt_fixup", "IP options", 21));
 
     QStringList allowed_fixups = 
@@ -521,17 +521,17 @@ pixAdvancedDialog::pixAdvancedDialog(QWidget*parent, FWObject *o)
             qDebug() << "pixAdvancedDialog::pixAdvancedDialog fwopt:"
                      << fi->fwoption;
 
-        if (fi->switch_widget!=NULL)
+        if (fi->switch_widget!=nullptr)
             connect( fi->switch_widget, SIGNAL(activated(int)),
                      this, SLOT(fixupCmdChanged()));
 
-        if (fi->arg1!=NULL) connect( fi->arg1, SIGNAL(valueChanged(int)),
+        if (fi->arg1!=nullptr) connect( fi->arg1, SIGNAL(valueChanged(int)),
                                      this, SLOT(fixupCmdChanged()));
 
-        if (fi->arg2!=NULL) connect( fi->arg2, SIGNAL(valueChanged(int)),
+        if (fi->arg2!=nullptr) connect( fi->arg2, SIGNAL(valueChanged(int)),
                                      this, SLOT(fixupCmdChanged()));
 
-        if (fi->arg3!=NULL) connect( fi->arg3, SIGNAL(clicked()),
+        if (fi->arg3!=nullptr) connect( fi->arg3, SIGNAL(clicked()),
                                      this, SLOT(fixupCmdChanged()));
 
         bool active = allowed_fixups.contains(fi->fwoption);
@@ -718,7 +718,7 @@ void pixAdvancedDialog::changeAllFixups(int state)
 void pixAdvancedDialog::loadFixups()
 {
     FWOptions *options=(Firewall::cast(obj))->getOptionsObject();
-    assert(options!=NULL);
+    assert(options!=nullptr);
 
     for (list<fixupControl>::iterator fi=allFixups.begin(); fi!=allFixups.end(); fi++)
     {
@@ -801,7 +801,7 @@ void pixAdvancedDialog::displayCommands()
  * object back
  */
     FWOptions *options = (Firewall::cast(obj))->getOptionsObject();
-    assert(options!=NULL);
+    assert(options!=nullptr);
 
     FWOptions *backup_options = new FWOptions();
     backup_options->duplicate(options, false);
@@ -838,10 +838,10 @@ void pixAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* fwoptions = Firewall::cast(new_state)->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     Management *mgmt = (Firewall::cast(new_state))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     data.saveAll(fwoptions);
 
@@ -910,7 +910,7 @@ void pixAdvancedDialog::setDefaultTimeoutValue(const QString &option)
 {
     string platform = obj->getStr("platform");   // could be 'pix' or 'fwsm'
     FWOptions *fwoptions=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     string vers="version_"+obj->getStr("version");
 
@@ -927,7 +927,7 @@ void pixAdvancedDialog::setDefaultTimeoutValue(const QString &option)
 void pixAdvancedDialog::defaultTimeouts()
 {
     FWOptions *fwoptions=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     string vers="version_"+obj->getStr("version");
 

src/libgui/pixFailoverOptionsDialog.cpp

@@ -50,7 +50,7 @@ pixFailoverOptionsDialog::pixFailoverOptionsDialog(QWidget *parent, FWObject *o)
     obj = o;
 
     FWOptions *gropt = FWOptions::cast(obj);
-    assert(gropt != NULL);
+    assert(gropt != nullptr);
     
     data.registerOption(m_dialog->pix_failover_key,
                         gropt,
@@ -90,7 +90,7 @@ void pixFailoverOptionsDialog::reject()
 bool pixFailoverOptionsDialog::validate()
 {
     bool valid = true;
-    QWidget *focus = NULL;
+    QWidget *focus = nullptr;
     QString message;
 
     // key must be set

src/libgui/pixosAdvancedDialog.cpp

@@ -63,10 +63,10 @@ pixosAdvancedDialog::pixosAdvancedDialog(QWidget *parent,FWObject *o)
     obj=o;
 
     FWOptions *fwoptions=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
 /* Page "General" */
     data.registerOption(
@@ -130,7 +130,7 @@ void pixosAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* fwoptions = Firewall::cast(new_state)->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     data.saveAll(fwoptions);
 

src/libgui/pixosIfaceOptsDialog.cpp

@@ -52,7 +52,7 @@ pixosIfaceOptsDialog::pixosIfaceOptsDialog(QWidget *parent, FWObject *o)
     obj = o;
 
     FWOptions *ifopt = (Interface::cast(obj))->getOptionsObject();
-    cluster_interface = (Cluster::cast(obj->getParent()) != NULL);
+    cluster_interface = (Cluster::cast(obj->getParent()) != nullptr);
 
     setInterfaceTypes(m_dialog->iface_type, Interface::cast(obj),
                       ifopt->getStr("type").c_str());
@@ -97,7 +97,7 @@ void pixosIfaceOptsDialog::accept()
     // new_state  is a copy of the interface object
     FWObject* new_state = cmd->getNewState();
     FWOptions* ifopt = Interface::cast(new_state)->getOptionsObject();
-    assert(ifopt!=NULL);
+    assert(ifopt!=nullptr);
 
     if (cluster_interface)
     {
@@ -156,7 +156,7 @@ bool pixosIfaceOptsDialog::validate()
     QString combobox = m_dialog->iface_type->currentText();
     QString type = m_dialog->iface_type->itemData(
         m_dialog->iface_type->currentIndex()).toString();
-    QWidget *focus = NULL;
+    QWidget *focus = nullptr;
     QString message;
 
     if (type == "8021q")

src/libgui/platforms.cpp

@@ -196,15 +196,15 @@ bool isDefaultPolicyRuleOptions(FWOptions *opt)
 {
     bool res = true;
     FWObject *p;
-    PolicyRule *rule = NULL;
+    PolicyRule *rule = nullptr;
 
     p = opt;
     do {
         p = p->getParent();
-        if (PolicyRule::cast(p)!=NULL) rule = PolicyRule::cast(p);
+        if (PolicyRule::cast(p)!=nullptr) rule = PolicyRule::cast(p);
-    } while ( p!=NULL && Firewall::cast(p)==NULL );
+    } while ( p!=nullptr && Firewall::cast(p)==nullptr );
 
-    if (p==NULL)
+    if (p==nullptr)
     {
         qDebug() << "isDefaultPolicyRuleOptions()"
                  << "Can not locate parent Firewall object for the options object";
@@ -315,7 +315,7 @@ bool isDefaultPolicyRuleOptions(FWOptions *opt)
             res = true;
 	}
 
-        if (rule!=NULL)
+        if (rule!=nullptr)
         {
             PolicyRule::Action act = rule->getAction();
 
@@ -348,9 +348,9 @@ bool isDefaultNATRuleOptions(FWOptions *opt)
 
     p=opt;
     do {  p=p->getParent();
-    } while ( p!=NULL && Firewall::cast(p)==NULL );
+    } while ( p!=nullptr && Firewall::cast(p)==nullptr );
 
-    assert(p!=NULL);
+    assert(p!=nullptr);
 
     QString platform = p->getStr("platform").c_str();
 
@@ -496,7 +496,7 @@ void getVersionsForPlatform(const QString &platform, std::list<QStringPair> &res
 void getStateSyncTypesForOS(const QString &host_os, std::list<QStringPair> &res)
 {
     Resources* os_res = Resources::os_res[host_os.toStdString()];
-    if (os_res==NULL) return;
+    if (os_res==nullptr) return;
     list<string> protocols;
     os_res->getResourceStrList("/FWBuilderResources/Target/protocols/state_sync",
                                protocols);
@@ -506,7 +506,7 @@ void getStateSyncTypesForOS(const QString &host_os, std::list<QStringPair> &res)
 void getFailoverTypesForOS(const QString &host_os, std::list<QStringPair> &res)
 {
     Resources* os_res = Resources::os_res[host_os.toStdString()];
-    if (os_res==NULL) return;
+    if (os_res==nullptr) return;
     list<string> protocols;
     os_res->getResourceStrList("/FWBuilderResources/Target/protocols/failover",
                                protocols);
@@ -518,7 +518,7 @@ void getInterfaceTypes(Interface *iface, list<QStringPair> &res)
     FWObject *fw = iface->getParent();
     string host_os = fw->getStr("host_OS");
     Resources* os_res = Resources::os_res[host_os];
-    if (os_res==NULL) return;
+    if (os_res==nullptr) return;
     list<string> interface_types;
 
     if (Cluster::isA(fw))
@@ -546,11 +546,11 @@ void getSubInterfaceTypes(Interface *iface, list<QStringPair> &res)
 {
     FWObject *p = Host::getParentHost(iface);
     //FWObject *p = iface->getParentHost();
-    assert(p!=NULL);
+    assert(p!=nullptr);
 
     QString host_os = p->getStr("host_OS").c_str();
     Resources* os_res = Resources::os_res[host_os.toStdString()];
-    if (os_res==NULL) return;
+    if (os_res==nullptr) return;
 
     FWOptions *ifopt;
     ifopt = Interface::cast(iface)->getOptionsObject();
@@ -589,13 +589,13 @@ void setInterfaceTypes(QComboBox *iface_type,
         // it could be one.
         FWObject *p = Host::getParentHost(iface);
         //FWObject *p = iface->getParentHost();
-        assert(p!=NULL);
+        assert(p!=nullptr);
         QString host_os = p->getStr("host_OS").c_str();
         QString obj_name = iface->getName().c_str();
 
         Resources* os_res = Resources::os_res[p->getStr("host_OS")];
         string os_family = p->getStr("host_OS");
-        if (os_res!=NULL)
+        if (os_res!=nullptr)
             os_family = os_res->getResourceStr("/FWBuilderResources/Target/family");
 
         std::unique_ptr<interfaceProperties> int_prop(
@@ -746,7 +746,7 @@ QString getRuleAction(Rule *rule)
 
 QString getActionNameForPlatform(Firewall *fw, Rule *rule)
 {
-    if (fw==NULL) return "";
+    if (fw==nullptr) return "";
     PolicyRule *policy_rule = PolicyRule::cast(rule);
     NATRule *nat_rule = NATRule::cast(rule);
     string act;
@@ -757,7 +757,7 @@ QString getActionNameForPlatform(Firewall *fw, Rule *rule)
 
 QString getActionNameForPlatform(Firewall *fw, const std::string &action)
 {
-    if (fw==NULL) return "";
+    if (fw==nullptr) return "";
     string platform = fw->getStr("platform");
     string name;
     try  
@@ -1052,11 +1052,11 @@ void _repackStringList(list<string> &list1, list<QStringPair> &list2)
 void setDefaultStateSyncGroupAttributes(StateSyncClusterGroup *grp)
 {
     FWObject *p = grp;
-    while (p && Cluster::cast(p)==NULL) p = p->getParent();
+    while (p && Cluster::cast(p)==nullptr) p = p->getParent();
-    assert(p != NULL);
+    assert(p != nullptr);
     Cluster *cluster = Cluster::cast(p);
     Resources *os_res = Resources::os_res[cluster->getStr("host_OS")];
-    assert(os_res != NULL);
+    assert(os_res != nullptr);
 
     list<string> protocols;
     os_res->getResourceStrList("/FWBuilderResources/Target/protocols/state_sync",
@@ -1071,14 +1071,14 @@ void setDefaultStateSyncGroupAttributes(StateSyncClusterGroup *grp)
 void setDefaultFailoverGroupAttributes(FailoverClusterGroup *grp)
 {
     FWObject *p = grp;
-    while (p && Cluster::cast(p)==NULL) p = p->getParent();
+    while (p && Cluster::cast(p)==nullptr) p = p->getParent();
-    assert(p != NULL);
+    assert(p != nullptr);
     Cluster *cluster = Cluster::cast(p);
     Resources *os_res = Resources::os_res[cluster->getStr("host_OS")];
-    assert(os_res != NULL);
+    assert(os_res != nullptr);
 
     FWOptions *gropt = grp-> getOptionsObject();
-    assert(gropt != NULL);
+    assert(gropt != nullptr);
     
     string failover_protocol = grp->getStr("type");
 

src/libgui/procurveaclAdvancedDialog.cpp

@@ -79,7 +79,7 @@ procurveaclAdvancedDialog::procurveaclAdvancedDialog(QWidget *parent,FWObject *o
     obj=o;
 
     FWOptions *fwoptions=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     // As of 4.1.0 we do not support scp install method for Procurve
     // I could not figure out how to copy configuration to the switch
@@ -201,7 +201,7 @@ procurveaclAdvancedDialog::procurveaclAdvancedDialog(QWidget *parent,FWObject *o
     }
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     data.registerOption(m_dialog->ipv4before_2,    fwoptions,
                         "ipv4_6_order",
@@ -326,10 +326,10 @@ void procurveaclAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* options = Firewall::cast(new_state)->getOptionsObject();
-    assert(options!=NULL);
+    assert(options!=nullptr);
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     data.saveAll(options);
 

src/libgui/secuwallAdvancedDialog.cpp

@@ -62,10 +62,10 @@ secuwallAdvancedDialog::secuwallAdvancedDialog(QWidget *parent, FWObject *o)
     setWindowTitle(QObject::tr("%1 advanced settings").arg(description.c_str()));
 
     FWOptions *fwoptions=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     data.registerOption(m_dialog->logTCPseq, fwoptions, "log_tcp_seq");
     data.registerOption(m_dialog->logTCPopt, fwoptions, "log_tcp_opt");
@@ -198,10 +198,10 @@ void secuwallAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* fwoptions = Firewall::cast(new_state)->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     Management *mgmt = (Firewall::cast(new_state))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     data.saveAll(fwoptions);
 

src/libgui/secuwallIfaceOptsDialog.cpp

@@ -41,7 +41,7 @@ secuwallIfaceOptsDialog::secuwallIfaceOptsDialog(QWidget *parent, FWObject *o)
     obj = o;
 
     FWOptions *ifopt = (Interface::cast(obj))->getOptionsObject();
-    cluster_interface = (Cluster::cast(obj->getParent()) != NULL);
+    cluster_interface = (Cluster::cast(obj->getParent()) != nullptr);
 
     setInterfaceTypes(m_dialog->iface_type, Interface::cast(obj),
                       ifopt->getStr("type").c_str());
@@ -100,7 +100,7 @@ void secuwallIfaceOptsDialog::accept()
     // new_state  is a copy of the interface object
     FWObject* new_state = cmd->getNewState();
     FWOptions* ifopt = Interface::cast(new_state)->getOptionsObject();
-    assert(ifopt!=NULL);
+    assert(ifopt!=nullptr);
 
     if (cluster_interface)
     {

src/libgui/secuwallosAdvancedDialog.cpp

@@ -55,7 +55,7 @@ secuwallosAdvancedDialog::secuwallosAdvancedDialog(QWidget *parent, FWObject *o)
     obj = o;
 
     FWOptions *fwopt = (Firewall::cast(obj))->getOptionsObject();
-    assert(fwopt != NULL);
+    assert(fwopt != nullptr);
 
     // mappings from value to QComboBox index
     QStringList threeStateMapping;
@@ -235,7 +235,7 @@ void secuwallosAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* fwoptions = Firewall::cast(new_state)->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     data.saveAll(fwoptions);
 
@@ -328,7 +328,7 @@ void secuwallosAdvancedDialog::buttonOpenURLClicked()
 bool secuwallosAdvancedDialog::validate()
 {
     bool valid = true;
-    QWidget *focus = NULL;
+    QWidget *focus = nullptr;
     QString message;
 
     // widgets to verify

src/libgui/snmpNetworkDiscoveryWizard/ND_ChooseObjectTypePage.cpp

@@ -100,7 +100,7 @@ void ND_ChooseObjectTypePage::changeTargetObject(const QString &buf)
 {
     QTreeWidgetItem* item = m_dialog->typeChangingList->topLevelItem(0);
 
-    while (item!=0)
+    while (item!=nullptr)
     {
         if (item->isSelected())
         {

src/libgui/snmpNetworkDiscoveryWizard/ND_CreateObjectsPage.cpp

@@ -77,7 +77,7 @@ void ND_CreateObjectsPage::initializePage()
 
     m_dialog->progressBar->setFormat("%v / %m");
     m_dialog->progressBar->setMaximum(objectsToUse->size() / 2 + networks->size());
-    FWObject *last_object = NULL;
+    FWObject *last_object = nullptr;
     string type, name, a;
     int counter = 0;
 
@@ -90,7 +90,7 @@ void ND_CreateObjectsPage::initializePage()
         Address *net = Address::cast(
             mw->createObject(type.c_str(), name.c_str()));
 
-        assert(net!=NULL);
+        assert(net!=nullptr);
 
         net->setName(name);
         net->setAddress(od.addr);
@@ -123,7 +123,7 @@ void ND_CreateObjectsPage::initializePage()
 
             if (type==Host::TYPENAME || type==Firewall::TYPENAME)
             {
-                FWObject *o=NULL;
+                FWObject *o=nullptr;
 
                 o = mw->createObject(type.c_str(), name.c_str());
                 o->setName(name);
@@ -239,7 +239,7 @@ void ND_CreateObjectsPage::initializePage()
 "important to review and fix generated objects if you "
 "use MAC address spoofing."
 ),
-                            tr("&Continue"), 0, 0,
+                            tr("&Continue"), nullptr, nullptr,
                             0 );
 
 
@@ -254,7 +254,7 @@ void ND_CreateObjectsPage::initializePage()
 
                         FWObject *intf = addInterface(
                             o, in, in->subinterfaces.size()!=0);
-                        if (intf == NULL) continue;
+                        if (intf == nullptr) continue;
 
                         list<InterfaceData*>::iterator sit;
                         for (sit=in->subinterfaces.begin();
@@ -281,7 +281,7 @@ void ND_CreateObjectsPage::initializePage()
                 Network *net=dynamic_cast<Network*>(
                     mw->createObject(type.c_str(),name.c_str())
                 );
-                assert(net!=NULL);
+                assert(net!=nullptr);
                 net->setName(name);
                 net->setAddress(InetAddr(a));
                 net->setNetmask(InetAddr(InetAddr(a)));
@@ -291,7 +291,7 @@ void ND_CreateObjectsPage::initializePage()
                 IPv4 *obj=dynamic_cast<IPv4*>(
                     mw->createObject(type.c_str(),name.c_str())
                 );
-                assert(obj!=NULL);
+                assert(obj!=nullptr);
                 obj->setName(name);
                 obj->setAddress(InetAddr(a));
                 obj->setNetmask(InetAddr(InetAddr::getAllOnes()));
@@ -322,13 +322,13 @@ FWObject* ND_CreateObjectsPage::addInterface(FWObject *parent, InterfaceData *in
 
     if ( ! includeUnnumbered && ! skip_ip_address_check)
     {
-        if (in->addr_mask.size()==0) return NULL;
+        if (in->addr_mask.size()==0) return nullptr;
         if (in->addr_mask.front()->getAddressPtr()->isAny())
-            return NULL;
+            return nullptr;
     }
 
     QString obj_name = in->name.c_str();
-    Interface *itf = NULL;
+    Interface *itf = nullptr;
     itf = Interface::cast(
         mw->createObject(parent,
                          QString(Interface::TYPENAME), obj_name));

src/libgui/solarisAdvancedDialog.cpp

@@ -60,10 +60,10 @@ solarisAdvancedDialog::solarisAdvancedDialog(QWidget *parent,FWObject *o)
     obj=o;
 
     FWOptions *fwopt=(Firewall::cast(obj))->getOptionsObject();
-    assert(fwopt!=NULL);
+    assert(fwopt!=nullptr);
 
     Management *mgmt=(Firewall::cast(obj))->getManagementObject();
-    assert(mgmt!=NULL);
+    assert(mgmt!=nullptr);
 
     QStringList threeStateMapping;
 
@@ -119,7 +119,7 @@ void solarisAdvancedDialog::accept()
     // new_state  is a copy of the fw object
     FWObject* new_state = cmd->getNewState();
     FWOptions* fwoptions = Firewall::cast(new_state)->getOptionsObject();
-    assert(fwoptions!=NULL);
+    assert(fwoptions!=nullptr);
 
     data.saveAll(fwoptions);
 

src/libgui/vlanOnlyIfaceOptsDialog.cpp

@@ -52,7 +52,7 @@ vlanOnlyIfaceOptsDialog::vlanOnlyIfaceOptsDialog(QWidget *parent, FWObject *o)
     obj = o;
 
     FWOptions *ifopt = (Interface::cast(obj))->getOptionsObject();
-    cluster_interface = (Cluster::cast(obj->getParent()) != NULL);
+    cluster_interface = (Cluster::cast(obj->getParent()) != nullptr);
 
     setInterfaceTypes(m_dialog->iface_type, Interface::cast(obj),
                       ifopt->getStr("type").c_str());
@@ -95,7 +95,7 @@ void vlanOnlyIfaceOptsDialog::accept()
     // new_state  is a copy of the interface object
     FWObject* new_state = cmd->getNewState();
     FWOptions* ifopt = Interface::cast(new_state)->getOptionsObject();
-    assert(ifopt!=NULL);
+    assert(ifopt!=nullptr);
 
     if (cluster_interface)
     {
@@ -150,7 +150,7 @@ bool vlanOnlyIfaceOptsDialog::validate()
     QString combobox = m_dialog->iface_type->currentText();
     QString type = m_dialog->iface_type->itemData(
         m_dialog->iface_type->currentIndex()).toString();
-    QWidget *focus = NULL;
+    QWidget *focus = nullptr;
     QString message;
 
     if (type == "vrrp")

src/libgui/vrrpOptionsDialog.cpp

@@ -50,7 +50,7 @@ vrrpOptionsDialog::vrrpOptionsDialog(QWidget *parent, FWObject *o)
     obj = o;
 
     FWOptions *gropt = FWOptions::cast(obj);
-    assert(gropt != NULL);
+    assert(gropt != nullptr);
 
     data.registerOption(m_dialog->vrrp_secret,
                         gropt,
@@ -99,7 +99,7 @@ void vrrpOptionsDialog::reject()
 bool vrrpOptionsDialog::validate()
 {
     bool valid = true;
-    QWidget *focus = NULL;
+    QWidget *focus = nullptr;
     QString message;
 
     // vrrp secret must be set

src/nxosacl/nxosacl.cpp

@@ -65,7 +65,7 @@ using namespace libfwbuilder;
 using namespace fwcompiler;
 
 
-FWObjectDatabase       *objdb = NULL;
+FWObjectDatabase       *objdb = nullptr;
 
 class UpgradePredicate: public XMLTools::UpgradePredicate
 {

src/pflib/TableFactory.cpp

@@ -61,7 +61,7 @@ TableFactory::TableFactory(BaseCompiler *comp, Firewall *fwall,
     firewall = fwall;
     ruleSetName = "";
     group_registry = _group_registry;
-    dbroot = NULL;
+    dbroot = nullptr;
     persistent_tables = new ObjectGroup();
     persistent_tables->setName("PF Tables");
     persistent_objects->add(persistent_tables);
@@ -93,7 +93,7 @@ string TableFactory::generateTblID(RuleElement *re)
     for (FWObject::iterator i=re->begin(); i!=re->end(); i++)
     {
         FWObject *o   = *i;
-        if (FWReference::cast(o)!=NULL) o=FWReference::cast(o)->getPointer();
+        if (FWReference::cast(o)!=nullptr) o=FWReference::cast(o)->getPointer();
         lids.push_back(FWObjectDatabase::getStringId(o->getId()));
     }
     lids.sort();
@@ -165,7 +165,7 @@ void TableFactory::createTablesForRE(RuleElement *re, Rule *rule)
 
     string tblID = generateTblID(re);
 
-    FWObject *tblgrp = NULL;
+    FWObject *tblgrp = nullptr;
 
     list<FWObject*> objects_in_groups;
     list<FWObject*> objects;
@@ -309,7 +309,7 @@ string TableFactory::PrintTables()
         output << "table ";
         output << "<" << grp->getName() << "> ";
         MultiAddressRunTime *atrt = MultiAddressRunTime::cast(grp);
-        if (atrt!=NULL &&
+        if (atrt!=nullptr &&
             atrt->getSubstitutionTypeName()==AddressTable::TYPENAME)
         {
             output << "persist";
@@ -332,10 +332,10 @@ string TableFactory::PrintTables()
         {
             if (i!=grp->begin())  output << ", ";
             FWObject *o = FWReference::getObject(*i);
-            if (o==NULL) compiler->abort("broken table object ");
+            if (o==nullptr) compiler->abort("broken table object ");
 
             MultiAddressRunTime *atrt = MultiAddressRunTime::cast(o);
-            if (atrt!=NULL)
+            if (atrt!=nullptr)
             {
                 if (atrt->getSubstitutionTypeName()==DNSName::TYPENAME)
                 {
@@ -353,7 +353,7 @@ string TableFactory::PrintTables()
                 } else
                 {
                     Address *A=Address::cast( o );
-                    if (A==NULL)
+                    if (A==nullptr)
                         compiler->abort("table object must be an address: '" +
                                           o->getTypeName()+"'");
 

src/pix/pix.cpp

@@ -65,7 +65,7 @@ using namespace libfwbuilder;
 using namespace fwcompiler;
 
 
-FWObjectDatabase *objdb = NULL;
+FWObjectDatabase *objdb = nullptr;
 
 
 class UpgradePredicate: public XMLTools::UpgradePredicate

src/procurve_acl/procurve_acl.cpp

@@ -65,7 +65,7 @@ using namespace libfwbuilder;
 using namespace fwcompiler;
 
 
-FWObjectDatabase       *objdb = NULL;
+FWObjectDatabase       *objdb = nullptr;
 
 class UpgradePredicate: public XMLTools::UpgradePredicate
 {