diff options
Diffstat (limited to 'contrib/vertobot/bot.pl')
| -rw-r--r-- | contrib/vertobot/bot.pl | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/contrib/vertobot/bot.pl b/contrib/vertobot/bot.pl new file mode 100644 index 0000000000..30cde41ce7 --- /dev/null +++ b/contrib/vertobot/bot.pl @@ -0,0 +1,288 @@ +#!/usr/bin/env perl + +use strict; +use warnings; +use 5.010; # // +use IO::Socket::SSL qw(SSL_VERIFY_NONE); +use IO::Async::Loop; +use Net::Async::WebSocket::Client; +use Net::Async::Matrix 0.11; +use JSON; +use YAML; +use Data::UUID; +use Getopt::Long; +use Digest::SHA qw( hmac_sha1_base64 ); +use Data::Dumper; + +binmode STDOUT, ":encoding(UTF-8)"; +binmode STDERR, ":encoding(UTF-8)"; + +my $loop = IO::Async::Loop->new; +# Net::Async::HTTP + SSL + IO::Poll doesn't play well. See +# https://rt.cpan.org/Ticket/Display.html?id=93107 +ref $loop eq "IO::Async::Loop::Poll" and + warn "Using SSL with IO::Poll causes known memory-leaks!!\n"; + +GetOptions( + 'C|config=s' => \my $CONFIG, + 'eval-from=s' => \my $EVAL_FROM, +) or exit 1; + +if( defined $EVAL_FROM ) { + # An emergency 'eval() this file' hack + $SIG{HUP} = sub { + my $code = do { + open my $fh, "<", $EVAL_FROM or warn( "Cannot read - $!" ), return; + local $/; <$fh> + }; + + eval $code or warn "Cannot eval() - $@"; + }; +} + +defined $CONFIG or die "Must supply --config\n"; + +my %CONFIG = %{ YAML::LoadFile( $CONFIG ) }; + +my %MATRIX_CONFIG = %{ $CONFIG{matrix} }; +# No harm in always applying this +$MATRIX_CONFIG{SSL_verify_mode} = SSL_VERIFY_NONE; + +# Track every Room object, so we can ->leave them all on shutdown +my %bot_matrix_rooms; + +my $bridgestate = {}; +my $roomid_by_callid = {}; + +my $bot_verto = Net::Async::WebSocket::Client->new( + on_frame => sub { + my ( $self, $frame ) = @_; + warn "[Verto] receiving $frame"; + on_verto_json($frame); + }, +); +$loop->add( $bot_verto ); + +my $bot_matrix = Net::Async::Matrix->new( + %MATRIX_CONFIG, + on_log => sub { warn "log: @_\n" }, + on_invite => sub { + my ($matrix, $invite) = @_; + warn "[Matrix] invited to: " . $invite->{room_id} . " by " . $invite->{inviter} . "\n"; + + $matrix->join_room( $invite->{room_id} )->get; + }, + on_room_new => sub { + my ($matrix, $room) = @_; + + warn "[Matrix] have a room ID: " . $room->room_id . "\n"; + + $bot_matrix_rooms{$room->room_id} = $room; + + # log in to verto on behalf of this room + my $sessid = lc new Data::UUID->create_str(); + $bridgestate->{$room->room_id}->{sessid} = $sessid; + + $room->configure( + on_message => \&on_room_message, + ); + + Future->wait_all( + send_verto_json_request("login", { + 'login' => $CONFIG{'verto-dialog-params'}{'login'}, + 'passwd' => $CONFIG{'verto-config'}{'passwd'}, + 'sessid' => $sessid, + }), + )->get; + + # we deliberately don't paginate the room, as we only care about + # new calls + }, + on_unknown_event => \&on_unknown_event, + on_error => sub { + print STDERR "Matrix failure: @_\n"; + }, +); +$loop->add( $bot_matrix ); + +sub on_unknown_event +{ + my ($matrix, $event) = @_; + print Dumper($event); + + my $room_id = $event->{room_id}; + my %dp = %{$CONFIG{'verto-dialog-params'}}; + $dp{callID} = $bridgestate->{$room_id}->{callid}; + + if ($event->{type} eq 'm.call.invite') { + $bridgestate->{$room_id}->{matrix_callid} = $event->{content}->{call_id}; + $bridgestate->{$room_id}->{callid} = lc new Data::UUID->create_str(); + $bridgestate->{$room_id}->{offer} = $event->{content}->{offer}->{sdp}; + $bridgestate->{$room_id}->{gathered_candidates} = 0; + $roomid_by_callid->{ $bridgestate->{$room_id}->{callid} } = $room_id; + # no trickle ICE in verto apparently + } + elsif ($event->{type} eq 'm.call.candidates') { + # XXX: compare call IDs + if (!$bridgestate->{$room_id}->{gathered_candidates}) { + $bridgestate->{$room_id}->{gathered_candidates} = 1; + my $offer = $bridgestate->{$room_id}->{offer}; + my $candidate_block = ""; + foreach (@{$event->{content}->{candidates}}) { + $candidate_block .= "a=" . $_->{candidate} . "\r\n"; + } + # XXX: collate using the right m= line - for now assume audio call + $offer =~ s/(a=rtcp.*[\r\n]+)/$1$candidate_block/; + + send_verto_json_request("verto.invite", { + "sdp" => $offer, + "dialogParams" => \%dp, + "sessid" => $bridgestate->{$room_id}->{sessid}, + })->get; + } + else { + # ignore them, as no trickle ICE, although we might as well + # batch them up + # foreach (@{$event->{content}->{candidates}}) { + # push @{$bridgestate->{$room_id}->{candidates}}, $_; + # } + } + } + elsif ($event->{type} eq 'm.call.hangup') { + send_verto_json_request("verto.bye", { + "dialogParams" => \%dp, + "sessid" => $bridgestate->{$room_id}->{sessid}, + })->get; + } + else { + warn "Unhandled event: $event->{type}"; + } +} + +sub on_room_message +{ + my ($room, $from, $content) = @_; + my $room_id = $room->room_id; + warn "[Matrix] in $room_id: $from: " . $content->{body} . "\n"; +} + +my $verto_connecting = $loop->new_future; +$bot_verto->connect( + %{ $CONFIG{"verto-bot"} }, + on_connected => sub { + warn("[Verto] connected to websocket"); + $verto_connecting->done($bot_verto) if not $verto_connecting->is_done; + }, + on_connect_error => sub { die "Cannot connect to verto - $_[-1]" }, + on_resolve_error => sub { die "Cannot resolve to verto - $_[-1]" }, +); + +Future->needs_all( + $bot_matrix->login( %{ $CONFIG{"matrix-bot"} } )->then( sub { + $bot_matrix->start; + }), + + $verto_connecting, +)->get; + +$loop->attach_signal( + PIPE => sub { warn "pipe\n" } +); +$loop->attach_signal( + INT => sub { $loop->stop }, +); +$loop->attach_signal( + TERM => sub { $loop->stop }, +); + +eval { + $loop->run; +} or my $e = $@; + +# When the bot gets shut down, have it leave the rooms so it's clear to observers +# that it is no longer running. +# if( $CONFIG{"leave-on-shutdown"} // 1 ) { +# print STDERR "Removing bot from Matrix rooms...\n"; +# Future->wait_all( map { $_->leave->else_done() } values %bot_matrix_rooms )->get; +# } +# else { +# print STDERR "Leaving bot users in Matrix rooms.\n"; +# } + +die $e if $e; + +exit 0; + +{ + my $json_id; + my $requests; + + sub send_verto_json_request + { + $json_id ||= 1; + + my ($method, $params) = @_; + my $json = { + jsonrpc => "2.0", + method => $method, + params => $params, + id => $json_id, + }; + my $text = JSON->new->encode( $json ); + warn "[Verto] sending $text"; + $bot_verto->send_frame ( $text ); + my $request = $loop->new_future; + $requests->{$json_id} = $request; + $json_id++; + return $request; + } + + sub send_verto_json_response + { + my ($result, $id) = @_; + my $json = { + jsonrpc => "2.0", + result => $result, + id => $id, + }; + my $text = JSON->new->encode( $json ); + warn "[Verto] sending $text"; + $bot_verto->send_frame ( $text ); + } + + sub on_verto_json + { + my $json = JSON->new->decode( $_[0] ); + if ($json->{method}) { + if ($json->{method} eq 'verto.answer') { + + my $room_id = $roomid_by_callid->{$json->{params}->{callID}}; + my $room = $bot_matrix_rooms{$room_id}; + + # HACK HACK HACK HACK + $room->_do_POST_json( "/send/m.call.answer", { + call_id => $bridgestate->{$room_id}->{matrix_callid}, + version => 0, + answer => { + sdp => $json->{params}->{sdp}, + type => "answer", + }, + })->then( sub { + send_verto_json_response( { + method => "verto.answer", + }, $json->{id}); + })->get; + } + else { + warn ("[Verto] unhandled method: " . $json->{method}); + } + } + elsif ($json->{result}) { + $requests->{$json->{id}}->done($json->{result}); + } + elsif ($json->{error}) { + $requests->{$json->{id}}->fail($json->{error}->{message}, $json->{error}); + } + } +} + |