69 lines
3.0 KiB
Plaintext
69 lines
3.0 KiB
Plaintext
#!rsc by RouterOS
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# RouterOS script: ipsec-to-dns
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# Copyright (c) 2021 Christian Hesse <mail@eworm.de>
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# https://git.eworm.de/cgit/routeros-scripts/about/COPYING.md
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#
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# and add/remove/update DNS entries from IPSec mode-config
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# https://git.eworm.de/cgit/routeros-scripts/about/doc/ipsec-to-dns.md
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:local 0 "ipsec-to-dns";
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:global GlobalFunctionsReady;
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:while ($GlobalFunctionsReady != true) do={ :delay 500ms; }
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:global Domain;
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:global HostNameInZone;
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:global Identity;
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:global PrefixInZone;
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:global CharacterReplace;
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:global LogPrintExit2;
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:global IfThenElse;
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:local Zone \
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([ $IfThenElse ($PrefixInZone = true) "ipsec." ] . \
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[ $IfThenElse ($HostNameInZone = true) ($Identity . ".") ] . $Domain);
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:local Ttl 5m;
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:local CommentPrefix ("managed by " . $0 . " for ");
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:local CommentString ("--- " . $0 . " above ---");
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:if ([ :len [ / ip dns static find where comment=$CommentString name=- type=NXDOMAIN disabled ] ] = 0) do={
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/ ip dns static add comment=$CommentString name=- type=NXDOMAIN disabled=yes;
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$LogPrintExit2 warning $0 ("Added disabled static dns record with comment '" . $CommentString . "'.") false;
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}
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:local PlaceBefore ([ / ip dns static find where comment=$CommentString name=- type=NXDOMAIN disabled ]->0);
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:foreach DnsRecord in=[ / ip dns static find where comment ~ $CommentPrefix ] do={
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:local DnsRecordVal [ / ip dns static get $DnsRecord ];
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:local PeerId [ $CharacterReplace ($DnsRecordVal->"comment") $CommentPrefix "" ];
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:if ([ :len [ / ip ipsec active-peers find where id=$PeerId dynamic-address=($DnsRecordVal->"address") ] ] > 0) do={
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$LogPrintExit2 debug $0 ("Peer " . $PeerId . " (" . $DnsRecordVal->"name" . ") still exists. Not deleting DNS entry.") false;
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} else={
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:local Found false;
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$LogPrintExit2 info $0 ("Peer " . $PeerId . " (" . $DnsRecordVal->"name" . ") has gone, deleting DNS entry.") false;
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/ ip dns static remove $DnsRecord;
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}
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}
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:foreach Peer in=[ / ip ipsec active-peers find where !(dynamic-address=[]) ] do={
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:local PeerVal [ / ip ipsec active-peers get $Peer ];
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:local Comment ($CommentPrefix . $PeerVal->"id");
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:put ($PeerVal->"id");
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:local HostName [ :pick ($PeerVal->"id") 0 [ :find ($PeerVal->"id" . ".") "." ] ];
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:put $HostName;
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:local Fqdn ($HostName . "." . $Zone);
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:local DnsRecord [ / ip dns static find where name=$Fqdn ];
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:if ([ :len $DnsRecord ] > 0) do={
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:local DnsIp [ / ip dns static get $DnsRecord address ];
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:if ($DnsIp = $PeerVal->"dynamic-address") do={
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$LogPrintExit2 debug $0 ("DNS entry for " . $Fqdn . " does not need updating.") false;
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} else={
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$LogPrintExit2 info $0 ("Replacing DNS entry for " . $Fqdn . ", new address is " . $PeerVal->"dynamic-address" . ".") false;
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/ ip dns static set name=$Fqdn address=($PeerVal->"dynamic-address") ttl=$Ttl comment=$Comment $DnsRecord;
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}
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} else={
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$LogPrintExit2 info $0 ("Adding new DNS entry for " . $Fqdn . ", address is " . $PeerVal->"dynamic-address" . ".") false;
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/ ip dns static add name=$Fqdn address=($PeerVal->"dynamic-address") ttl=$Ttl comment=$Comment place-before=$PlaceBefore;
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}
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}
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