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#!rsc by RouterOS
# RouterOS script: mod/notification-matrix
# Copyright (c) 2013-2024 Michael Gisbers <michael@gisbers.de>
# Christian Hesse <mail@eworm.de>
# https://git.eworm.de/cgit/routeros-scripts/about/COPYING.md
#
# requires RouterOS, version=7.13
#
# send notifications via Matrix
# https://git.eworm.de/cgit/routeros-scripts/about/doc/mod/notification-matrix.md
:global FlushMatrixQueue;
:global NotificationFunctions;
:global PurgeMatrixQueue;
:global SendMatrix;
:global SendMatrix2;
:global SetupMatrixAuthenticate;
:global SetupMatrixJoinRoom;
# flush Matrix queue
:set FlushMatrixQueue do={
:global MatrixQueue;
:global IsFullyConnected;
:global LogPrint;
:if ([ $IsFullyConnected ] = false) do={
$LogPrint debug $0 ("System is not fully connected, not flushing.");
:return false;
}
:local AllDone true;
:local QueueLen [ :len $MatrixQueue ];
:if ([ :len [ /system/scheduler/find where name="_FlushMatrixQueue" ] ] > 0 && $QueueLen = 0) do={
$LogPrint warning $0 ("Flushing Matrix messages from scheduler, but queue is empty.");
}
:foreach Id,Message in=$MatrixQueue do={
:if ([ :typeof $Message ] = "array" ) do={
:do {
/tool/fetch check-certificate=yes-without-crl output=none \
http-header-field=($Message->"headers") http-method=post \
http-data=[ :serialize to=json { "msgtype"="m.text"; "body"=($Message->"plain");
"format"="org.matrix.custom.html"; "formatted_body"=($Message->"formatted") } ] \
("https://" . $Message->"homeserver" . "/_matrix/client/r0/rooms/" . $Message->"room" . \
"/send/m.room.message?access_token=" . $Message->"accesstoken") as-value;
:set ($MatrixQueue->$Id);
} on-error={
$LogPrint debug $0 ("Sending queued Matrix message failed.");
:set AllDone false;
}
}
}
:if ($AllDone = true && $QueueLen = [ :len $MatrixQueue ]) do={
/system/scheduler/remove [ find where name="_FlushMatrixQueue" ];
:set MatrixQueue;
}
}
# send notification via Matrix - expects one array argument
:set ($NotificationFunctions->"matrix") do={
:local Notification $1;
:global Identity;
:global IdentityExtra;
:global MatrixAccessToken;
:global MatrixAccessTokenOverride;
:global MatrixHomeServer;
:global MatrixHomeServerOverride;
:global MatrixQueue;
:global MatrixRoom;
:global MatrixRoomOverride;
:global EitherOr;
:global FetchUserAgentStr;
:global LogPrint;
:global ProtocolStrip;
:global SymbolForNotification;
:local PrepareText do={
:local Input [ :tostr $1 ];
:if ([ :len $Input ] = 0) do={
:return "";
}
:local Return "";
:local Chars { "\""; "\n"; "&"; "<"; ">" };
:local Subs { """; "<br/>"; "&"; "<"; ">" };
:for I from=0 to=([ :len $Input ] - 1) do={
:local Char [ :pick $Input $I ];
:local Replace [ :find $Chars $Char ];
:if ([ :typeof $Replace ] = "num") do={
:set Char ($Subs->$Replace);
}
:set Return ($Return . $Char);
}
:return $Return;
}
:local AccessToken [ $EitherOr ($MatrixAccessTokenOverride->($Notification->"origin")) $MatrixAccessToken ];
:local HomeServer [ $EitherOr ($MatrixHomeServerOverride->($Notification->"origin")) $MatrixHomeServer ];
:local Room [ $EitherOr ($MatrixRoomOverride->($Notification->"origin")) $MatrixRoom ];
:if ([ :len $AccessToken ] = 0 || [ :len $HomeServer ] = 0 || [ :len $Room ] = 0) do={
:return false;
}
:local Headers ({ [ $FetchUserAgentStr ($Notification->"origin") ] });
:local Plain ("## [" . $IdentityExtra . $Identity . "] " . \
($Notification->"subject") . "\n```\n" . ($Notification->"message") . "\n```");
:local Formatted ("<h2>" . [ $PrepareText ("[" . $IdentityExtra . $Identity . "] " . \
($Notification->"subject")) ] . "</h2>" . "<pre><code>" . \
[ $PrepareText ($Notification->"message") ] . "</code></pre>");
:if ([ :len ($Notification->"link") ] > 0) do={
:local Label [ $ProtocolStrip ($Notification->"link") ];
:set Plain ($Plain . "\n" . [ $SymbolForNotification "link" ] . \
"[" . $Label . "](" . $Notification->"link" . ")");
:set Formatted ($Formatted . "<br/>" . [ $SymbolForNotification "link" ] . \
"<a href=\"" . [ $PrepareText ($Notification->"link") ] . "\">" . \
[ $PrepareText $Label ] . "</a>");
}
:do {
/tool/fetch check-certificate=yes-without-crl output=none \
http-header-field=$Headers http-method=post \
http-data=[ :serialize to=json { "msgtype"="m.text"; "body"=$Plain;
"format"="org.matrix.custom.html"; "formatted_body"=$Formatted } ] \
("https://" . $HomeServer . "/_matrix/client/r0/rooms/" . $Room . \
"/send/m.room.message?access_token=" . $AccessToken) as-value;
} on-error={
$LogPrint info $0 ("Failed sending Matrix notification! Queuing...");
:if ([ :typeof $MatrixQueue ] = "nothing") do={
:set MatrixQueue ({});
}
:local Text ([ $SymbolForNotification "alarm-clock" ] . \
"This message was queued since " . [ /system/clock/get date ] . \
" " . [ /system/clock/get time ] . " and may be obsolete.");
:set Plain ($Plain . "\n" . $Text);
:set Formatted ($Formatted . "<br/>" . $Text);
:set ($MatrixQueue->[ :len $MatrixQueue ]) { headers=$Headers; \
accesstoken=$AccessToken; homeserver=$HomeServer; room=$Room; \
plain=$Plain; formatted=$Formatted };
:if ([ :len [ /system/scheduler/find where name="_FlushMatrixQueue" ] ] = 0) do={
/system/scheduler/add name="_FlushMatrixQueue" interval=1m start-time=startup \
on-event=(":global FlushMatrixQueue; \$FlushMatrixQueue;");
}
}
}
# purge the Matrix queue
:set PurgeMatrixQueue do={
:global MatrixQueue;
/system/scheduler/remove [ find where name="_FlushMatrixQueue" ];
:set MatrixQueue;
}
# send notification via Matrix - expects at least two string arguments
:set SendMatrix do={
:global SendMatrix2;
$SendMatrix2 ({ origin=$0; subject=$1; message=$2; link=$3 });
}
# send notification via Matrix - expects one array argument
:set SendMatrix2 do={
:local Notification $1;
:global NotificationFunctions;
($NotificationFunctions->"matrix") ("\$NotificationFunctions->\"matrix\"") $Notification;
}
# setup - get home server and access token
:set SetupMatrixAuthenticate do={
:local User [ :tostr $1 ];
:local Pass [ :tostr $2 ];
:global FetchUserAgentStr;
:global LogPrint;
:global MatrixAccessToken;
:global MatrixHomeServer;
:local Domain [ :pick $User ([ :find $User ":" ] + 1) [ :len $User] ];
:do {
:local Data ([ /tool/fetch check-certificate=yes-without-crl output=user \
http-header-field=({ [ $FetchUserAgentStr $0 ] }) \
("https://" . $Domain . "/.well-known/matrix/client") as-value ]->"data");
:set MatrixHomeServer ([ :deserialize from=json value=$Data ]->"m.homeserver"->"base_url");
$LogPrint debug $0 ("Home server is: " . $MatrixHomeServer);
} on-error={
$LogPrint error $0 ("Failed getting home server!");
:return false;
}
:if ([ :pick $MatrixHomeServer 0 8 ] = "https://") do={
:set MatrixHomeServer [ :pick $MatrixHomeServer 8 [ :len $MatrixHomeServer ] ];
}
:do {
:local Data ([ /tool/fetch check-certificate=yes-without-crl output=user \
http-header-field=({ [ $FetchUserAgentStr $0 ] }) http-method=post \
http-data=[ :serialize to=json { "type"="m.login.password"; "user"=$User; "password"=$Pass } ] \
("https://" . $MatrixHomeServer . "/_matrix/client/r0/login") as-value ]->"data");
:set MatrixAccessToken ([ :deserialize from=json value=$Data ]->"access_token");
$LogPrint debug $0 ("Access token is: " . $MatrixAccessToken);
} on-error={
$LogPrint error $0 ("Failed logging in (and getting access token)!");
:return false;
}
:do {
/system/script/remove [ find where name="global-config-overlay.d/mod/notification-matrix" ];
/system/script/add name="global-config-overlay.d/mod/notification-matrix" source=( \
"# configuration snippet: mod/notification-matrix\n\n" . \
":global MatrixHomeServer \"" . $MatrixHomeServer . "\";\n" . \
":global MatrixAccessToken \"" . $MatrixAccessToken . "\";\n");
$LogPrint info $0 ("Added configuration snippet. Now create and join a room, please!");
} on-error={
$LogPrint error $0 ("Failed adding configuration snippet!");
:return false;
}
}
# setup - join a room
:set SetupMatrixJoinRoom do={
:global MatrixRoom [ :tostr $1 ];
:global FetchUserAgentStr;
:global LogPrint;
:global UrlEncode;
:global MatrixAccessToken;
:global MatrixHomeServer;
:global MatrixRoom;
:do {
/tool/fetch check-certificate=yes-without-crl output=none \
http-header-field=({ [ $FetchUserAgentStr $0 ] }) http-method=post http-data="" \
("https://" . $MatrixHomeServer . "/_matrix/client/r0/rooms/" . [ $UrlEncode $MatrixRoom ] . \
"/join?access_token=" . [ $UrlEncode $MatrixAccessToken ]) as-value;
$LogPrint debug $0 ("Joined the room.");
} on-error={
$LogPrint error $0 ("Failed joining the room!");
:return false;
}
:do {
:local Snippet [ /system/script/find where name="global-config-overlay.d/mod/notification-matrix" ];
/system/script/set $Snippet source=([ get $Snippet source ] . \
":global MatrixRoom \"" . $MatrixRoom . "\";\n");
$LogPrint info $0 ("Appended configuration to configuration snippet. Please review!");
} on-error={
$LogPrint error $0 ("Failed appending configuration to snippet!");
:return false;
}
}
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