routeros-scripts/lease-script.rsc

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#!rsc by RouterOS
# RouterOS script: lease-script
# Copyright (c) 2013-2023 Christian Hesse <mail@eworm.de>
# https://git.eworm.de/cgit/routeros-scripts/about/COPYING.md
#
# run scripts on DHCP lease
# https://git.eworm.de/cgit/routeros-scripts/about/doc/lease-script.md
:local 0 "lease-script";
:global GlobalFunctionsReady;
:while ($GlobalFunctionsReady != true) do={ :delay 500ms; }
:global Grep;
:global IfThenElse;
:global LogPrintExit2;
:global ParseKeyValueStore;
:global ScriptLock;
:if ([ :typeof $leaseActIP ] = "nothing" || \
[ :typeof $leaseActMAC ] = "nothing" || \
[ :typeof $leaseServerName ] = "nothing" || \
[ :typeof $leaseBound ] = "nothing") do={
$LogPrintExit2 error $0 ("This script is supposed to run from ip dhcp-server.") true;
}
$LogPrintExit2 debug $0 ("DHCP Server " . $leaseServerName . " " . [ $IfThenElse ($leaseBound = 0) \
"de" "" ] . "assigned lease " . $leaseActIP . " to " . $leaseActMAC) false;
$ScriptLock $0 false 10;
:if ([ :len [ /system/script/job/find where script=$0 ] ] > 1) do={
$LogPrintExit2 debug $0 ("More invocations are waiting, exiting early.") true;
}
:local RunOrder ({});
:foreach Script in=[ /system/script/find where source~("\n# provides: lease-script, ") ] do={
:local ScriptVal [ /system/script/get $Script ];
:local Store [ $ParseKeyValueStore [ $Grep ($ScriptVal->"source") ("\23 provides: lease-script, ") ] ];
:set ($RunOrder->($Store->"order" . "-" . $ScriptVal->"name")) ($ScriptVal->"name");
}
:foreach Order,Script in=$RunOrder do={
:do {
$LogPrintExit2 debug $0 ("Running script with order " . $Order . ": " . $Script) false;
/system/script/run $Script;
} on-error={
$LogPrintExit2 warning $0 ("Running script '" . $Script . "' failed!") false;
}
}