diff options
Diffstat (limited to 'global-functions.d')
| -rw-r--r-- | global-functions.d/notification-telegram | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/global-functions.d/notification-telegram b/global-functions.d/notification-telegram new file mode 100644 index 0000000..1509a2e --- /dev/null +++ b/global-functions.d/notification-telegram @@ -0,0 +1,162 @@ +#!rsc by RouterOS +# RouterOS script: global-functions.d/notification-telegram +# Copyright (c) 2013-2021 Christian Hesse <mail@eworm.de> +# https://git.eworm.de/cgit/routeros-scripts/about/COPYING.md + +:global FlushTelegramQueue; +:global NotificationFunctions; +:global SendTelegram; +:global SendTelegram2; + +# flush telegram queue +:set FlushTelegramQueue do={ + :global TelegramQueue; + + :global LogPrintExit2; + + :local AllDone true; + :local QueueLen [ :len $TelegramQueue ]; + + :if ([ :len [ / system scheduler find where name="FlushTelegramQueue" ] ] > 0 && $QueueLen = 0) do={ + $LogPrintExit2 warning $0 ("Flushing Telegram messages from scheduler, but queue is empty.") false; + } + + :foreach Id,Message in=$TelegramQueue do={ + :if ([ :typeof $Message ] = "array" ) do={ + :do { + / tool fetch check-certificate=yes-without-crl output=none http-method=post \ + ("https://api.telegram.org/bot" . ($Message->"tokenid") . "/sendMessage") \ + http-data=("chat_id=" . ($Message->"chatid") . \ + "&disable_notification=" . ($Message->"silent") . \ + "&disable_web_page_preview=true&parse_mode=" . ($Message->"parsemode") . \ + "&text=" . ($Message->"text")) as-value; + :set ($TelegramQueue->$Id); + } on-error={ + $LogPrintExit2 debug $0 ("Sending queued Telegram message failed.") false; + :set AllDone false; + } + } + } + + :if ($AllDone = true && $QueueLen = [ :len $TelegramQueue ]) do={ + / system scheduler remove [ find where name="FlushTelegramQueue" ]; + :set TelegramQueue; + } +} + +# send notification via telegram - expects one array argument +:set ($NotificationFunctions->"telegram") do={ + :local Notification $1; + + :global Identity; + :global TelegramChatId; + :global TelegramChatIdOverride; + :global TelegramFixedWidthFont; + :global TelegramQueue; + :global TelegramTokenId; + :global TelegramTokenIdOverride; + + :global CertificateAvailable; + :global CharacterReplace; + :global EitherOr; + :global IfThenElse; + :global LogPrintExit2; + :global SymbolForNotification; + :global UrlEncode; + + :local EscapeMD do={ + :global TelegramFixedWidthFont; + + :global CharacterReplace; + :global IfThenElse; + + :if ($TelegramFixedWidthFont != true) do={ + :return ($1 . [ $IfThenElse ($2 = "body") "\n" "" ]); + } + + :local Return $1; + :local Chars { + "body"={ "\\"; "`" }; + "hint"={ "_"; "*"; "["; "]"; "("; ")"; "~"; "`"; ">"; + "#"; "+"; "-"; "="; "|"; "{"; "}"; "."; "!" }; + } + :foreach Char in=($Chars->$2) do={ + :set Return [ $CharacterReplace $Return $Char ("\\" . $Char) ]; + } + + :if ($2 = "body") do={ + :return ("```\n" . $Return . "\n```"); + } + + :return $Return; + } + + :local ChatId [ $EitherOr ($TelegramChatIdOverride->($Notification->"origin")) $TelegramChatId ]; + :local TokenId [ $EitherOr ($TelegramTokenIdOverride->($Notification->"origin")) $TelegramTokenId ]; + + :if ([ :len $TokenId ] = 0 || [ :len $ChatId ] = 0) do={ + :return false; + } + + :local Truncated false; + :local LenLink [ :len ($Notification->"link") ]; + :local Text ("[" . $Identity . "] " . ($Notification->"subject") . "\n\n" . ($Notification->"message")); + :local LenText [ :len $Text ]; + :if ($LenText > (3968 - $LenLink)) do={ + :set Text [ $EscapeMD ([ :pick $Text 0 (3840 - $LenLink) ] . "...") "body" ]; + :set Truncated true; + } else={ + :set Text [ $EscapeMD $Text "body" ]; + } + :if ($LenLink > 0) do={ + :set Text ($Text . "\n" . [ $SymbolForNotification "link" ] . [ $EscapeMD ($Notification->"link") "hint" ]); + } + :if ($Truncated = true) do={ + :set Text ($Text . "\n" . [ $SymbolForNotification "scissors" ] . \ + [ $EscapeMD ("The Telegram message was too long and has been truncated, cut off " . \ + (($LenText - [ :len $Text ]) * 100 / $LenText) . "%!") "hint" ]); + } + :set Text [ $UrlEncode $Text ]; + :local ParseMode [ $IfThenElse ($TelegramFixedWidthFont = true) "MarkdownV2" "" ]; + + :do { + :if ([ $CertificateAvailable "Go Daddy Secure Certificate Authority - G2" ] = false) do={ + $LogPrintExit2 warning $0 ("Downloading required certificate failed.") true; + } + / tool fetch check-certificate=yes-without-crl output=none http-method=post \ + ("https://api.telegram.org/bot" . $TokenId . "/sendMessage") \ + http-data=("chat_id=" . $ChatId . "&disable_notification=" . ($Notification->"silent") . \ + "&disable_web_page_preview=true&parse_mode=" . $ParseMode . "&text=" . $Text) as-value; + } on-error={ + $LogPrintExit2 info $0 ("Failed sending telegram notification! Queuing...") false; + + :if ([ :typeof $TelegramQueue ] = "nothing") do={ + :set TelegramQueue [ :toarray "" ]; + } + :set Text ($Text . [ $UrlEncode ("\n" . [ $SymbolForNotification "alarm-clock" ] . \ + [ $EscapeMD ("This message was queued since " . [ / system clock get date ] . \ + " " . [ / system clock get time ] . " and may be obsolete.") "hint" ]) ]); + :set ($TelegramQueue->[ :len $TelegramQueue ]) { chatid=$ChatId; tokenid=$TokenId; + parsemode=$ParseMode; text=$Text; silent=($Notification->"silent") }; + :if ([ :len [ / system scheduler find where name="FlushTelegramQueue" ] ] = 0) do={ + / system scheduler add name=FlushTelegramQueue interval=1m start-time=startup \ + on-event=":global FlushTelegramQueue; \$FlushTelegramQueue;"; + } + } +} + +# send notification via telegram - expects at lease two string arguments +:set SendTelegram do={ + :global SendTelegram2; + + $SendTelegram2 ({ subject=$1; message=$2; link=$3; silent=$4 }); +} + +# send notification via telegram - expects one array argument +:set SendTelegram2 do={ + :local Notification $1; + + :global NotificationFunctions; + + ($NotificationFunctions->"telegram") ("\$NotificationFunctions->\"telegram\"") $Notification; +} |