#!rsc by RouterOS # RouterOS script: telegram-chat # Copyright (c) 2023 Christian Hesse <mail@eworm.de> # https://git.eworm.de/cgit/routeros-scripts/about/COPYING.md # # use Telegram to chat with your Router and send commands # https://git.eworm.de/cgit/routeros-scripts/about/doc/telegram-chat.md :local 0 "telegram-chat"; :global GlobalFunctionsReady; :while ($GlobalFunctionsReady != true) do={ :delay 500ms; } :global Identity; :global TelegramChatActive; :global TelegramChatGroups; :global TelegramChatId; :global TelegramChatIdsTrusted; :global TelegramChatOffset; :global TelegramChatRunTime; :global TelegramTokenId; :global CertificateAvailable; :global EitherOr; :global EscapeForRegEx; :global GetRandom20CharAlNum; :global IfThenElse; :global LogPrintExit2; :global MkDir; :global ScriptLock; :global SendTelegram2; :global SymbolForNotification; :global ValidateSyntax; :global WaitForFile; :global WaitFullyConnected; $ScriptLock $0; $WaitFullyConnected; :if ([ :typeof $TelegramChatOffset ] != "array") do={ :set TelegramChatOffset { 0; 0; 0 }; } :if ([ $CertificateAvailable "Go Daddy Secure Certificate Authority - G2" ] = false) do={ $LogPrintExit2 warning $0 ("Downloading required certificate failed.") true; } :local JsonGetKey do={ :local Array [ :toarray $1 ]; :local Key [ :tostr $2 ]; :for I from=0 to=([ :len $Array ] - 1) do={ :if (($Array->$I) = $Key) do={ :if ($Array->($I + 1) = ":") do={ :return ($Array->($I + 2)); } :return [ :pick ($Array->($I + 1)) 1 [ :len ($Array->($I + 1)) ] ]; } } :return false; } :local Data; :do { :set Data ([ /tool/fetch check-certificate=yes-without-crl output=user \ ("https://api.telegram.org/bot" . $TelegramTokenId . "/getUpdates?offset=" . \ $TelegramChatOffset->0 . "&allowed_updates=%5B%22message%22%5D") as-value ]->"data"); :set Data [ :pick $Data ([ :find $Data "[" ] + 1) ([ :len $Data ] - 2) ]; } on-error={ $LogPrintExit2 debug $0 ("Failed getting updates from Telegram.") true; } :local UpdateID 0; :foreach Update in=[ :toarray $Data ] do={ :set UpdateID [ $JsonGetKey $Update "update_id" ]; :if ($UpdateID >= $TelegramChatOffset->2) do={ :local Trusted false; :local Message [ $JsonGetKey $Update "message" ]; :local From [ $JsonGetKey $Message "from" ]; :local FromID [ $JsonGetKey $From "id" ]; :local FromUserName [ $JsonGetKey $From "username" ]; :local ChatID [ $JsonGetKey [ $JsonGetKey $Message "chat" ] "id" ]; :local Text [ $JsonGetKey $Message "text" ]; :foreach IdsTrusted in=($TelegramChatId, $TelegramChatIdsTrusted) do={ :if ($FromID = $IdsTrusted || $FromUserName = $IdsTrusted) do={ :set Trusted true; } } :if ($Trusted = true) do={ :if ([ :pick $Text 0 1 ] = "!") do={ :if ($Text ~ ("^! *(" . [ $EscapeForRegEx $Identity ] . "|@" . $TelegramChatGroups . ")\$")) do={ :set TelegramChatActive true; } else={ :set TelegramChatActive false; } $LogPrintExit2 info $0 ("Now " . [ $IfThenElse $TelegramChatActive "active" "passive" ] . \ " from update " . $UpdateID . "!") false; } else={ :if ($TelegramChatActive = true && $Text != false && [ :len $Text ] > 0) do={ :if ([ $ValidateSyntax $Text ] = true) do={ :local State ""; :local File ("tmpfs/telegram-chat/" . [ $GetRandom20CharAlNum 6 ]); $MkDir "tmpfs/telegram-chat"; $LogPrintExit2 info $0 ("Running command from update " . $UpdateID . ": " . $Text) false; :exec script=(":do {\n" . $Text . "\n} on-error={ :execute script=\"/\" file=" . $File . ".failed };" . \ ":execute script=\"/\" file=" . $File . ".done") file=$File; :if ([ $WaitForFile ($File . ".done.txt") [ $EitherOr $TelegramChatRunTime 20s ] ] = false) do={ :set State "The command did not finish, still running in background.\n\n"; } :if ([ :len [ /file/find where name=($File . ".failed.txt") ] ] > 0) do={ :set State "The command failed with an error!\n\n"; } :local Content [ /file/get ($File . ".txt") contents ]; $SendTelegram2 ({ origin=$0; chatid=$ChatID; silent=false; \ subject=([ $SymbolForNotification "speech-balloon" ] . "Telegram Chat"); \ message=("Command:\n" . $Text . "\n\n" . $State . [ $IfThenElse ([ :len $Content ] > 0) \ ("Output:\n" . $Content) [ $IfThenElse ([ /file/get ($File . ".txt") size ] > 0) \ ("Output exceeds file read size.") ("No output.") ] ]) }); /file/remove "tmpfs/telegram-chat"; } else={ $LogPrintExit2 info $0 ("The command from update " . $UpdateID . " failed syntax validation!") false; $SendTelegram2 ({ origin=$0; chatid=$ChatID; silent=false; \ subject=([ $SymbolForNotification "speech-balloon" ] . "Telegram Chat"); \ message=("Command:\n" . $Text . "\n\nThe command failed syntax validation!") }); } } } } else={ :local Message ("Received a message from untrusted contact " . \ [ $IfThenElse ($FromUserName = false) "without username" ("'" . $FromUserName . "'") ] . \ " (ID " . $FromID . ") in update " . $UpdateID . "!"); :if ($Text ~ ("^! *" . [ $EscapeForRegEx $Identity ] . "\$")) do={ $LogPrintExit2 warning $0 $Message false; $SendTelegram2 ({ origin=$0; chatid=$ChatID; silent=false; \ subject=([ $SymbolForNotification "speech-balloon" ] . "Telegram Chat"); \ message=("You are not trusted.") }); } else={ $LogPrintExit2 info $0 $Message false; } } } else={ $LogPrintExit2 debug $0 ("Already handled update " . $UpdateID . ".") false; } } :set TelegramChatOffset ([ :pick $TelegramChatOffset 1 3 ], \ [ $IfThenElse ($UpdateID >= $TelegramChatOffset->2) ($UpdateID + 1) ($TelegramChatOffset->2) ]);