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-rw-r--r--dhcp-to-dns78
1 files changed, 0 insertions, 78 deletions
diff --git a/dhcp-to-dns b/dhcp-to-dns
deleted file mode 100644
index dfb438f..0000000
--- a/dhcp-to-dns
+++ /dev/null
@@ -1,78 +0,0 @@
-#!rsc by RouterOS
-# RouterOS script: dhcp-to-dns
-# Copyright (c) 2013-2021 Christian Hesse <mail@eworm.de>
-# https://git.eworm.de/cgit/routeros-scripts/about/COPYING.md
-#
-# check DHCP leases and add/remove/update DNS entries
-# https://git.eworm.de/cgit/routeros-scripts/about/doc/dhcp-to-dns.md
-
-:local 0 "dhcp-to-dns";
-:global GlobalFunctionsReady;
-:while ($GlobalFunctionsReady != true) do={ :delay 500ms; }
-
-:global Domain;
-:global HostNameInZone;
-:global Identity;
-:global PrefixInZone;
-:global ServerNameInZone;
-
-:global CharacterReplace;
-:global IfThenElse;
-:global LogPrintExit2;
-
-:local Zone \
- ([ $IfThenElse ($PrefixInZone = true) "dhcp." ] . \
- [ $IfThenElse ($HostNameInZone = true) ($Identity . ".") ] . $Domain);
-:local Ttl 5m;
-:local CommentPrefix "managed by dhcp-to-dns for ";
-
-:if ([ :len [ / ip dns static find where comment="--- dhcp-to-dns above ---" name=- type=NXDOMAIN disabled ] ] = 0) do={
- / ip dns static add comment="--- dhcp-to-dns above ---" name=- type=NXDOMAIN disabled=yes;
- $LogPrintExit2 warning $0 ("Added disabled static dns record with comment '--- dhcp-to-dns above ---'.") false;
-}
-:local PlaceBefore ([ / ip dns static find where comment="--- dhcp-to-dns above ---" name=- type=NXDOMAIN disabled ]->0);
-
-:foreach DnsRecord in=[ / ip dns static find where comment ~ $CommentPrefix ] do={
- :local DnsRecordVal [ / ip dns static get $DnsRecord ];
- :local MacAddress [ $CharacterReplace ($DnsRecordVal->"comment") $CommentPrefix "" ];
- :if ([ :len [ / ip dhcp-server lease find where mac-address=$MacAddress address=($DnsRecordVal->"address") status=bound ] ] > 0) do={
- $LogPrintExit2 debug $0 ("Lease for " . $MacAddress . " (" . $DnsRecordVal->"name" . ") still exists. Not deleting DNS entry.") false;
- } else={
- :local Found false;
- $LogPrintExit2 info $0 ("Lease expired for " . $MacAddress . " (" . $DnsRecordVal->"name" . "), deleting DNS entry.") false;
- / ip dns static remove $DnsRecord;
- }
-}
-
-:foreach Lease in=[ / ip dhcp-server lease find where status=bound ] do={
- :local LeaseVal [ / ip dhcp-server lease get $Lease ];
- :local Comment ($CommentPrefix . $LeaseVal->"mac-address");
- :local HostName [ $IfThenElse ([ :len ($LeaseVal->"host-name") ] = 0) \
- [ $CharacterReplace ($LeaseVal->"mac-address") ":" "-" ] \
- [ $CharacterReplace ($LeaseVal->"host-name") " " "" ] ];
-
- :local Fqdn ($HostName . "." . [ $IfThenElse ($ServerNameInZone = true) ($LeaseVal->"server" . ".") ] . $Zone);
- :local DnsRecord [ / ip dns static find where name=$Fqdn ];
- :if ([ :len $DnsRecord ] > 0) do={
- :local DnsIp [ / ip dns static get $DnsRecord address ];
-
- :local DupMacLeases [ / ip dhcp-server lease find where mac-address=($LeaseVal->"mac-address") status=bound ];
- :if ([ :len $DupMacLeases ] > 1) do={
- :set ($LeaseVal->"address") [ / ip dhcp-server lease get ($DupMacLeases->([ :len $DupMacLeases ] - 1)) address ];
- }
-
- :if ([ :len ($LeaseVal->"host-name") ] > 0) do={
- :set ($LeaseVal->"address") [ / ip dhcp-server lease get ([ find where host-name=($LeaseVal->"host-name") status=bound ]->0) address ];
- }
-
- :if ($DnsIp = $LeaseVal->"address") do={
- $LogPrintExit2 debug $0 ("DNS entry for " . $Fqdn . " does not need updating.") false;
- } else={
- $LogPrintExit2 info $0 ("Replacing DNS entry for " . $Fqdn . ", new address is " . $LeaseVal->"address" . ".") false;
- / ip dns static set name=$Fqdn address=($LeaseVal->"address") ttl=$Ttl comment=$Comment $DnsRecord;
- }
- } else={
- $LogPrintExit2 info $0 ("Adding new DNS entry for " . $Fqdn . ", address is " . $LeaseVal->"address" . ".") false;
- / ip dns static add name=$Fqdn address=($LeaseVal->"address") ttl=$Ttl comment=$Comment place-before=$PlaceBefore;
- }
-}