diff options
Diffstat (limited to 'dhcp-to-dns')
| -rw-r--r-- | dhcp-to-dns | 95 | 
1 files changed, 0 insertions, 95 deletions
diff --git a/dhcp-to-dns b/dhcp-to-dns deleted file mode 100644 index 44fd673..0000000 --- a/dhcp-to-dns +++ /dev/null @@ -1,95 +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 -# -# provides: lease-script, assign, deassign, order=20 -# -# 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 ($GlobalFunctionsReady != true) do={ :delay 500ms; } - -:global Domain; -:global HostNameInZone; -:global Identity; -:global PrefixInZone; -:global ServerNameInZone; - -:global CharacterReplace; -:global IfThenElse; -:global LogPrintExit2; -:global ScriptLock; - -$ScriptLock $0 false 10; - -:local Zone \ -  ([ $IfThenElse ($PrefixInZone = true) "dhcp." ] . \ -   [ $IfThenElse ($HostNameInZone = true) ($Identity . ".") ] . $Domain); -:local Ttl 5m; -:local CommentPrefix ("managed by " . $0 . " for "); -:local CommentString ("--- " . $0 . " above ---"); - -:if ([ :len [ / ip dns static find where comment=$CommentString name=- type=NXDOMAIN disabled ] ] = 0) do={ -  / ip dns static add comment=$CommentString name=- type=NXDOMAIN disabled=yes; -  $LogPrintExit2 warning $0 ("Added disabled static dns record with comment '" . $CommentString . "'.") false; -} -:local PlaceBefore ([ / ip dns static find where comment=$CommentString 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; -  :do { -    :set LeaseVal [ / ip dhcp-server lease get $Lease ]; -  } on-error={ -    $LogPrintExit2 debug $0 ("A lease just vanished, ignoring.") false; -  } - -  :if ([ :typeof $LeaseVal ] = "array") do={ -    :local Comment ($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={ -        :local HostNameLeases [ / ip dhcp-server lease find where host-name=($LeaseVal->"host-name") status=bound ]; -        :if ([ :len $HostNameLeases ] > 1) do={ -          :set ($LeaseVal->"address") [ / ip dhcp-server lease get ($HostNameLeases->0) address ]; -        } -      } - -      :if ($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; -    } -  } -}  |