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-rw-r--r--dhcp-to-dns68
1 files changed, 0 insertions, 68 deletions
diff --git a/dhcp-to-dns b/dhcp-to-dns
deleted file mode 100644
index f88599c..0000000
--- a/dhcp-to-dns
+++ /dev/null
@@ -1,68 +0,0 @@
-#!rsc
-# RouterOS script: dhcp-to-dns
-# Copyright (c) 2013-2020 Christian Hesse <mail@eworm.de>
-#
-# check DHCP leases and add/remove/update DNS entries
-# https://git.eworm.de/cgit/routeros-scripts/about/doc/dhcp-to-dns.md
-
-:global Domain;
-:global HostNameInZone;
-:global Identity;
-
-:global CharacterReplace;
-:global LogPrintExit;
-
-:local Zone;
-:if ($HostNameInZone = true) do={
- :set Zone ("dhcp." . $Identity . "." . $Domain);
-} else={
- :set Zone ("dhcp." . $Domain);
-}
-:local Ttl 5m;
-:local CommentPrefix "managed by dhcp-to-dns for ";
-
-:foreach DnsRecord in=[ / ip dns static find where comment ~ $CommentPrefix ] do={
- :local DnsRecordVal [ / ip dns static get $DnsRecord ];
- :local MacAddress [ $CharacterReplace ($DnsRecordVal->"comment") $CommentPrefix "" ];
- :if ([ / ip dhcp-server lease print count-only where mac-address=$MacAddress address=($DnsRecordVal->"address") dynamic=yes status=bound ] > 0) do={
- $LogPrintExit debug ("Lease for " . $MacAddress . " (" . $DnsRecordVal->"name" . ") still exists. Not deleting DNS entry.") false;
- } else={
- :local Found false;
- $LogPrintExit info ("Lease expired for " . $MacAddress . " (" . $DnsRecordVal->"name" . "), deleting DNS entry.") false;
- / ip dns static remove $DnsRecord;
- }
-}
-
-:foreach Lease in=[ / ip dhcp-server lease find where dynamic=yes status=bound ] do={
- :local LeaseVal [ / ip dhcp-server lease get $Lease ];
- :local Comment ($CommentPrefix . $LeaseVal->"mac-address");
- :local HostName [ $CharacterReplace ($LeaseVal->"host-name") " " "" ];
- :if ($HostName = "") do={
- :set HostName [ $CharacterReplace ($LeaseVal->"mac-address") ":" "-" ];
- }
-
- :local Fqdn ($HostName . "." . $Zone);
- :local DnsRecord [ / ip dns static find where name=$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") dynamic=yes 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") dynamic=yes status=bound ]->0) address ];
- }
-
- :if ($DnsIp = $LeaseVal->"address") do={
- $LogPrintExit debug ("DNS entry for " . $Fqdn . " does not need updating.") false;
- } else={
- $LogPrintExit info ("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={
- $LogPrintExit info ("Adding new DNS entry for " . $Fqdn . ", address is " . $LeaseVal->"address" . ".") false;
- / ip dns static add name=$Fqdn address=($LeaseVal->"address") ttl=$Ttl comment=$Comment;
- }
-}