#!rsc # RouterOS script: global-functions # Copyright (c) 2013-2019 Christian Hesse # # global functions # expected configuration version :global ExpectedConfigVersion 6; # global variables not to be changed by user :global SentConfigChangesNotification "-"; :global SentRouterosUpdateNotification "-"; :global SentLteFirmwareUpgradeNotification "-"; :global Identity [ / system identity get name ]; # url encoding :global UrlEncode do={ :local Input [ :tostr $1 ]; :local Return ""; :if ([ :len $Input ] > 0) do={ :local Chars " !\"#\$%&'()*+,-./:;<=>\?@[\\]^_`{|}~"; :local Subs { "%20"; "%21"; "%22"; "%23"; "%24"; "%25"; "%26"; "%27"; "%28"; "%29"; "%2A"; "%2B"; "%2C"; "%2D"; "%2E"; "%2F"; "%3A"; "%3B"; "%3C"; "%3D"; "%3E"; "%3F"; "%40"; "%5B"; "%5C"; "%5D"; "%5E"; "%5F"; "%60"; "%7B"; "%7C"; "%7D"; "%7E" }; :for I from=0 to=([ :len $Input ] - 1) do={ :local Char [ :pick $Input $I ]; :local Replace [ :find $Chars $Char ]; :if ([ :len $Replace ] > 0) do={ :set Char ($Subs->$Replace); } :set Return ($Return . $Char); } } :return $Return; } # character replace :global CharacterReplace do={ :local String [ :tostr $1 ]; :local ReplaceFrom [ :tostr $2 ]; :local ReplaceWith [ :tostr $3 ]; :local Len [ :len $ReplaceFrom ]; :local Return ""; :if ($ReplaceFrom = "") do={ :return $String; } :while ([ :typeof [ :find $String $ReplaceFrom ] ] != "nil") do={ :local Pos [ :find $String $ReplaceFrom ]; :set Return ($Return . [ :pick $String 0 $Pos ] . $ReplaceWith); :set String [ :pick $String ($Pos + $Len) 999 ]; } :return ($Return . $String); } # check and import required certificates :global CertificateAvailable do={ :local CommonName [ :tostr $1 ]; :global ScriptUpdatesBaseUrl; :global ScriptUpdatesUrlSuffix; :global UrlEncode; :global WaitForFile; :if ([ / certificate print count-only where common-name=$CommonName ] = 0) do={ :log info ("Certificate with CommonName " . $CommonName . \ " not available, downloading and importing."); :do { :local LocalFileName ($CommonName . ".pem"); :local UrlFileName ([ $UrlEncode $CommonName ] . ".pem"); / tool fetch check-certificate=yes-without-crl \ ($ScriptUpdatesBaseUrl . "certs/" . \ $UrlFileName . $ScriptUpdatesUrlSuffix) \ dst-path=$LocalFileName; $WaitForFile $LocalFileName; / certificate import file-name=$LocalFileName passphrase=""; / file remove $LocalFileName; } on-error={ :log warning "Failed imprting certificate!"; } } } # send notification via e-mail :global SendEMail do={ :local Subject [ :tostr $1 ]; :local Message [ :tostr $2 ]; :local Attach [ :tostr $3 ]; :global Identity; :global EmailGeneralTo; :global EmailGeneralCc; :if ([ :len $EmailGeneralTo ] > 0) do={ :do { :local Signature [ / system note get note ]; :if ([ :len $Signature ] > 0) do={ :set Signature ("\n-- \n" . $Signature); } / tool e-mail send to=$EmailGeneralTo cc=$EmailGeneralCc \ subject=("[" . $Identity . "] " . $Subject) \ body=($Message . $Signature) file=$Attach; } on-error={ :log warning "Failed sending notification mail!"; } } } # send notification via telegram :global SendTelegram do={ :local Subject [ :tostr $1 ]; :local Message [ :tostr $2 ]; :local Silent [ :tostr $3 ]; :global Identity; :global TelegramTokenId; :global TelegramChatId; :global UrlEncode; :global CertificateAvailable; :if ([ :len $TelegramTokenId ] > 0 && [ :len $TelegramChatId ] > 0) do={ $CertificateAvailable "Go Daddy Secure Certificate Authority - G2"; :do { / tool fetch check-certificate=yes-without-crl keep-result=no http-method=post \ ("https://api.telegram.org/bot" . $TelegramTokenId . "/sendMessage") \ http-data=("chat_id=" . $TelegramChatId . "&disable_notification=" . $Silent . \ "&text=" . [ $UrlEncode ("[" . $Identity . "] " . $Subject . "\n\n" . $Message) ]); } on-error={ :log warning "Failed sending telegram notification!"; } } } # send notification via e-mail and telegram # Note that attachment is ignored for telegram, silent is ignored for e-mail! :global SendNotification do={ :local Subject [ :tostr $1 ]; :local Message [ :tostr $2 ]; :local Attach [ :tostr $3 ]; :local Silent [ :tostr $4 ]; :global SendEMail; :global SendTelegram; $SendEMail $Subject $Message $Attach; $SendTelegram $Subject $Message $Silent; } # get MAC vendor :global GetMacVendor do={ :local Mac [ :tostr $1 ]; :global CertificateAvailable; :do { :local Vendor; $CertificateAvailable "Let's Encrypt Authority X3"; :set Vendor ([ / tool fetch check-certificate=yes-without-crl \ ("https://api.macvendors.com/" . [ :pick $Mac 0 8 ]) output=user as-value ]->"data"); :return $Vendor; } on-error={ :return "unknown vendor"; } } # clean file path :global CleanFilePath do={ :local Path [ :tostr $1 ]; :global CharacterReplace; :while ($Path ~ "//") do={ :set $Path [ $CharacterReplace $Path "//" "/" ]; } :if ([ :pick $Path 0 ] = "/") do={ :set Path [ :pick $Path 1 [ :len $Path ] ]; } :if ([ :pick $Path ([ :len $Path ] - 1) ] = "/") do={ :set Path [ :pick $Path 0 ([ :len $Path ] - 1) ]; } :return $Path; } # download package from upgrade server :global DownloadPackage do={ :local PkgName [ :tostr $1 ]; :local PkgVer [ :tostr $2 ]; :local PkgArch [ :tostr $3 ]; :local PkgDir [ :tostr $4 ]; :global CertificateAvailable; :global CleanFilePath; :global WaitForFile; :if ([ :len $PkgName ] = 0) do={ return false; } :if ([ :len $PkgVer ] = 0) do={ :set PkgVer [ / system package update get installed-version ]; } :if ([ :len $PkgArch ] = 0) do={ :set PkgArch [ / system resource get architecture-name ]; } :local PkgFile ($PkgName . "-" . $PkgVer . "-" . $PkgArch . ".npk"); :if ($PkgArch = "x86_64") do={ :set PkgFile ($PkgName . "-" . $PkgVer . ".npk"); } :local PkgDest [ $CleanFilePath ($PkgDir . "/" . $PkgFile) ]; $CertificateAvailable "Let's Encrypt Authority X3"; :do { / tool fetch check-certificate=yes-without-crl \ ("https://upgrade.mikrotik.com/routeros/" . $PkgVer . "/" . $PkgFile) \ dst-path=$PkgDest; $WaitForFile $PkgDest; } on-error={ / file remove [ find where name=$PkgDest ]; :return false; } :if ([ / file get [ find where name=$PkgDest ] type ] != "package") do={ / file remove [ find where name=$PkgDest ]; :return false; } :return true; } # lock script against multiple invocation :global ScriptLock do={ :local Script [ :tostr $1 ]; :if ([ / system script job print count-only where script=$Script ] > 1) do={ :log debug ("Script " . $Script . " started more than once... Aborting."); :error "Locked." } } # wait for file to be available :global WaitForFile do={ :global CleanFilePath; :local FileName [ $CleanFilePath [ :tostr $1 ] ]; :local I 0; :while ([ file print count-only where name=$FileName ] = 0) do={ :if ($I > 20) do={ :return false; } :delay 100ms; :set I ($I + 1); } :return true; } # parse key value store :global ParseKeyValueStore do={ :global CharacterReplace; :local Source $1; :if ([ :typeof $Source ] != "array") do={ :set Source [ :tostr $1 ]; } :local Result [ :toarray "" ]; :foreach KeyValue in=[ :toarray $Source ] do={ :set KeyValue [ :toarray [ $CharacterReplace $KeyValue "=" "," ] ]; :set ($Result->($KeyValue->0)) ($KeyValue->1); } :return $Result; } # generate random number # Warning: This is a *very* weak algorithm and in *no way* # useful for cryptography or similar! :global GetRandom do={ :local Max ([ :tonum $1 ] + 1); :local Sum 0; :foreach Interface in=[ /interface find ] do={ :set Sum ($Sum + [ /interface get $Interface tx-byte ]); } :return ($Sum % $Max); } # delay a random amount of seconds :global RandomDelay do={ :global GetRandom; :delay ([ $GetRandom $1 ] . "s"); }