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#!rsc by RouterOS
# RouterOS script: mod/notification-email
# Copyright (c) 2013-2023 Christian Hesse <mail@eworm.de>
# https://git.eworm.de/cgit/routeros-scripts/about/COPYING.md
:global FlushEmailQueue;
:global LogForwardFilterLogForwarding;
:global NotificationFunctions;
:global SendEMail;
:global SendEMail2;
# flush e-mail queue
:set FlushEmailQueue do={
:global EmailQueue;
:global EitherOr;
:global IsDNSResolving;
:global IsTimeSync;
:global LogPrintExit2;
:local AllDone true;
:local QueueLen [ :len $EmailQueue ];
:local Scheduler [ /system/scheduler/find where name=$0 ];
:if ([ :len $Scheduler ] > 0 && [ /system/scheduler/get $Scheduler interval ] < 1m) do={
/system/scheduler/set interval=1m comment="Doing initial checks..." $Scheduler;
}
:if ([ /tool/e-mail/get last-status ] = "in-progress") do={
$LogPrintExit2 debug $0 ("Sending mail is currently in progress, not flushing.") false;
:return false;
}
:if ([ $IsTimeSync ] = false) do={
$LogPrintExit2 debug $0 ("Time is not synced, not flushing.") false;
:return false;
}
:if ([ :typeof [ :toip [ /tool/e-mail/get address ] ] ] != "ip" && [ $IsDNSResolving ] = false) do={
$LogPrintExit2 debug $0 ("Server address is a DNS name and resolving fails, not flushing.") false;
:return false;
}
:if ([ :len $Scheduler ] > 0 && $QueueLen = 0) do={
$LogPrintExit2 warning $0 ("Flushing E-Mail messages from scheduler, but queue is empty.") false;
}
/system/scheduler/set interval=([ $EitherOr $QueueLen 1 ] . "m") comment="Sending..." $Scheduler;
:foreach Id,Message in=$EmailQueue do={
:if ([ :typeof $Message ] = "array" ) do={
:local Attach ({});
:while ([ /tool/e-mail/get last-status ] = "in-progress") do={ :delay 1s; }
:foreach File in=[ :toarray [ $EitherOr ($Message->"attach") "" ] ] do={
:if ([ :len [ /file/find where name=$File ] ] = 1) do={
:set Attach ($Attach, $File);
} else={
$LogPrintExit2 warning $0 ("File '" . $File . "' does not exist, can not attach.") false;
}
}
/tool/e-mail/send to=($Message->"to") cc=($Message->"cc") subject=($Message->"subject") \
body=($Message->"body") file=$Attach;
:local Wait true;
:do {
:delay 1s;
:local Status [ /tool/e-mail/get last-status ];
:if ($Status = "succeeded") do={
:set ($EmailQueue->$Id);
:set Wait false;
:if (($Message->"remove-attach") = true) do={
:foreach File in=$Attach do={
/file/remove $File;
}
}
}
:if ($Status = "failed") do={
:set AllDone false;
:set Wait false;
}
} while=($Wait = true);
}
}
:if ($AllDone = true && $QueueLen = [ :len $EmailQueue ]) do={
/system/scheduler/remove $Scheduler;
:set EmailQueue;
} else={
/system/scheduler/set interval=1m comment="Waiting for retry..." $Scheduler;
}
}
# generate filter for log-forward
:set LogForwardFilterLogForwarding do={
:global Identity;
:global EscapeForRegEx;
:global QuotedPrintable;
:global SymbolForNotification;
:return ("^Error sending e-mail <(" . \
[ $EscapeForRegEx [ $QuotedPrintable ("[" . $Identity . "] " . \
[ $SymbolForNotification "memo" ] . "Log Forwarding") ] ] . "|" . \
[ $EscapeForRegEx [ $QuotedPrintable ("[" . $Identity . "] " . \
[ $SymbolForNotification "warning-sign" ] . "Log Forwarding") ] ] . ")>:");
}
# send notification via e-mail - expects one array argument
:set ($NotificationFunctions->"email") do={
:local Notification $1;
:global Identity;
:global EmailGeneralTo;
:global EmailGeneralToOverride;
:global EmailGeneralCc;
:global EmailGeneralCcOverride;
:global EmailQueue;
:global EitherOr;
:global IfThenElse;
:global QuotedPrintable;
:local To [ $EitherOr ($EmailGeneralToOverride->($Notification->"origin")) $EmailGeneralTo ];
:local Cc [ $EitherOr ($EmailGeneralCcOverride->($Notification->"origin")) $EmailGeneralCc ];
:local EMailSettings [ /tool/e-mail/get ];
:if ([ :len $To ] = 0 || ($EMailSettings->"address") = "0.0.0.0" || ($EMailSettings->"from") = "<>") do={
:return false;
}
:if ([ :typeof $EmailQueue ] = "nothing") do={
:set EmailQueue ({});
}
:local Signature [ /system/note/get note ];
:set ($EmailQueue->[ :len $EmailQueue ]) {
to=$To; cc=$Cc;
subject=[ $QuotedPrintable ("[" . $Identity . "] " . ($Notification->"subject")) ];
body=(($Notification->"message") . \
[ $IfThenElse ([ :len ($Notification->"link") ] > 0) ("\n\n" . ($Notification->"link")) "" ] . \
[ $IfThenElse ([ :len $Signature ] > 0) ("\n-- \n" . $Signature) "" ]); \
attach=($Notification->"attach"); remove-attach=($Notification->"remove-attach") };
:if ([ :len [ /system/scheduler/find where name="\$FlushEmailQueue" ] ] = 0) do={
/system/scheduler/add name="\$FlushEmailQueue" interval=1s start-time=startup \
comment="Queuing new mail..." on-event=(":global FlushEmailQueue; \$FlushEmailQueue;");
}
}
# send notification via e-mail - expects at least two string arguments
:set SendEMail do={
:global SendEMail2;
$SendEMail2 ({ subject=$1; message=$2; link=$3 });
}
# send notification via e-mail - expects one array argument
:set SendEMail2 do={
:local Notification $1;
:global NotificationFunctions;
($NotificationFunctions->"email") ("\$NotificationFunctions->\"email\"") $Notification;
}
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