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#!rsc by RouterOS
# RouterOS script: mod/notification-ntfy
# Copyright (c) 2013-2023 Christian Hesse <mail@eworm.de>
# https://git.eworm.de/cgit/routeros-scripts/about/COPYING.md
#
# send notifications via Ntfy (ntfy.sh)
# https://git.eworm.de/cgit/routeros-scripts/about/doc/mod/notification-ntfy.md
:global FlushNtfyQueue;
:global NotificationFunctions;
:global PurgeNtfyQueue;
:global SendNtfy;
:global SendNtfy2;
# flush ntfy queue
:set FlushNtfyQueue do={
:global NtfyQueue;
:global NtfyMessageIDs;
:global IsFullyConnected;
:global LogPrintExit2;
:if ([ $IsFullyConnected ] = false) do={
$LogPrintExit2 debug $0 ("System is not fully connected, not flushing.") false;
:return false;
}
:local AllDone true;
:local QueueLen [ :len $NtfyQueue ];
:if ([ :len [ /system/scheduler/find where name="_FlushNtfyQueue" ] ] > 0 && $QueueLen = 0) do={
$LogPrintExit2 warning $0 ("Flushing Ntfy messages from scheduler, but queue is empty.") false;
}
:foreach Id,Message in=$NtfyQueue do={
:if ([ :typeof $Message ] = "array" ) do={
:do {
/tool/fetch check-certificate=yes-without-crl output=none http-method=post \
($Message->"url") http-header-field=($Message->"headers") http-data=($Message->"text") as-value;
:set ($NtfyQueue->$Id);
} on-error={
$LogPrintExit2 debug $0 ("Sending queued Ntfy message failed.") false;
:set AllDone false;
}
}
}
:if ($AllDone = true && $QueueLen = [ :len $NtfyQueue ]) do={
/system/scheduler/remove [ find where name="_FlushNtfyQueue" ];
:set NtfyQueue;
}
}
# send notification via ntfy - expects one array argument
:set ($NotificationFunctions->"ntfy") do={
:local Notification $1;
:global Identity;
:global IdentityExtra;
:global NtfyQueue;
:global NtfyServer;
:global NtfyServerOverride;
:global NtfyTopic;
:global NtfyTopicOverride;
:global CertificateAvailable;
:global EitherOr;
:global IfThenElse;
:global LogPrintExit2;
:global SymbolForNotification;
:global UrlEncode;
:local Server [ $EitherOr ($NtfyServerOverride->($Notification->"origin")) $NtfyServer ];
:local Topic [ $EitherOr ($NtfyTopicOverride->($Notification->"origin")) $NtfyTopic ];
:if ([ :len $Topic ] = 0) do={
:return false;
}
:local Url ("https://" . $NtfyServer . "/" . [ $UrlEncode $NtfyTopic ]);
:local Headers ({ ("Priority: " . [ $IfThenElse ($Notification->"silent") "low" "default" ]); \
("Title: " . "[" . $IdentityExtra . $Identity . "] " . ($Notification->"subject")) });
:local Text (($Notification->"message") . "\n");
:if ([ :len ($Notification->"link") ] > 0) do={
:set Text ($Text . "\n" . [ $SymbolForNotification "link" ] . ($Notification->"link"));
}
:do {
:if ($NtfyServer = "ntfy.sh") do={
:if ([ $CertificateAvailable "R3" ] = false) do={
$LogPrintExit2 warning $0 ("Downloading required certificate failed.") true;
}
}
/tool/fetch check-certificate=yes-without-crl output=none http-method=post \
$Url http-header-field=$Headers http-data=$Text as-value;
} on-error={
$LogPrintExit2 info $0 ("Failed sending ntfy notification! Queuing...") false;
:if ([ :typeof $NtfyQueue ] = "nothing") do={
:set NtfyQueue ({});
}
:set Text ($Text . "\n" . [ $SymbolForNotification "alarm-clock" ] . \
"This message was queued since " . [ /system/clock/get date ] . " " . \
[ /system/clock/get time ] . " and may be obsolete.");
:set ($NtfyQueue->[ :len $NtfyQueue ]) { url=$Url; headers=$Headers; text=$Text };
:if ([ :len [ /system/scheduler/find where name="_FlushNtfyQueue" ] ] = 0) do={
/system/scheduler/add name="_FlushNtfyQueue" interval=1m start-time=startup \
on-event=(":global FlushNtfyQueue; \$FlushNtfyQueue;");
}
}
}
# purge the Ntfy queue
:set PurgeNtfyQueue do={
:global NtfyQueue;
/system/scheduler/remove [ find where name="_FlushNtfyQueue" ];
:set NtfyQueue;
}
# send notification via ntfy - expects at least two string arguments
:set SendNtfy do={
:global SendNtfy2;
$SendNtfy2 ({ subject=$1; message=$2; link=$3; silent=$4 });
}
# send notification via ntfy - expects one array argument
:set SendNtfy2 do={
:local Notification $1;
:global NotificationFunctions;
($NotificationFunctions->"ntfy") ("\$NotificationFunctions->\"ntfy\"") $Notification;
}
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