Crash_Override/routeros-scripts
1
0
Fork 0
mirror of https://github.com/eworm-de/routeros-scripts synced 2024-05-14 08:04:19 +00:00
Code Issues Projects Releases Packages Wiki Activity

dhcp-to-dns: properly handle vanished lease

Browse source
This commit is contained in:
Christian Hesse 2021-06-29 15:24:23 +02:00
parent 9c9fb46e4a
commit 23daea2354
1 changed files with 31 additions and 23 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

54
dhcp-to-dns
View file

@ -52,34 +52,42 @@ $ScriptLock $0 false 10;
}
: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 LeaseVal;
:do {
:set LeaseVal [ / ip dhcp-server lease get $Lease ];
} on-error={
$LogPrintExit2 debug $0 ("A lease just vanished, ignoring.") false;
}
:local Fqdn ($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 ];
: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 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 $DupMacLeases ] - 1)) address ];
}
:local Fqdn ($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 $DnsRecord address ];
:if ([ :len ($LeaseVal->"host-name") ] > 0) do={
:set ($LeaseVal->"address") [ / ip dhcp-server lease get ([ find where host-name=($LeaseVal->"host-name") status=bound ]->0) address ];
}
: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 $DupMacLeases ] - 1)) address ];
}
:if ($DnsIp = $LeaseVal->"address") do={
$LogPrintExit2 debug $0 ("DNS entry for " . $Fqdn . " does not need updating.") false;
:if ([ :len ($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 ("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;
$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;
}
} 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;
}
}