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synapse/contrib/vertobot/bot.pl
2015-08-06 18:18:16 +01:00

309 lines
9.3 KiB
Perl
Executable file

#!/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_002;
use JSON;
use YAML;
use Data::UUID;
use Getopt::Long;
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 $sessid = lc new Data::UUID->create_str();
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
$bridgestate->{$room->room_id}->{sessid} = $sessid;
$room->configure(
on_message => \&on_room_message,
);
my $f = send_verto_json_request("login", {
'login' => $CONFIG{'verto-dialog-params'}{'login'},
'passwd' => $CONFIG{'verto-config'}{'passwd'},
'sessid' => $sessid,
});
$matrix->adopt_future($f);
# 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 $candidate_block = {
audio => '',
video => '',
};
foreach (@{$event->{content}->{candidates}}) {
if ($_->{sdpMid}) {
$candidate_block->{$_->{sdpMid}} .= "a=" . $_->{candidate} . "\r\n";
}
else {
$candidate_block->{audio} .= "a=" . $_->{candidate} . "\r\n";
$candidate_block->{video} .= "a=" . $_->{candidate} . "\r\n";
}
}
# XXX: assumes audio comes first
#$offer =~ s/(a=rtcp-mux[\r\n]+)/$1$candidate_block->{audio}/;
#$offer =~ s/(a=rtcp-mux[\r\n]+)/$1$candidate_block->{video}/;
$offer =~ s/(m=video)/$candidate_block->{audio}$1/;
$offer =~ s/(.$)/$1\n$candidate_block->{video}$1/;
my $f = send_verto_json_request("verto.invite", {
"sdp" => $offer,
"dialogParams" => \%dp,
"sessid" => $bridgestate->{$room_id}->{sessid},
});
$matrix->adopt_future($f);
}
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') {
if ($bridgestate->{$room_id}->{matrix_callid} eq $event->{content}->{call_id}) {
my $f = send_verto_json_request("verto.bye", {
"dialogParams" => \%dp,
"sessid" => $bridgestate->{$room_id}->{sessid},
});
$matrix->adopt_future($f);
}
else {
warn "Ignoring unrecognised callid: ".$event->{content}->{call_id};
}
}
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";
}
Future->needs_all(
$bot_matrix->login( %{ $CONFIG{"matrix-bot"} } )->then( sub {
$bot_matrix->start;
}),
$bot_verto->connect(
%{ $CONFIG{"verto-bot"} },
on_connect_error => sub { die "Cannot connect to verto - $_[-1]" },
on_resolve_error => sub { die "Cannot resolve to verto - $_[-1]" },
)->on_done( sub {
warn("[Verto] connected to websocket");
}),
)->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' && $json->{params}->{sdp}) ||
$json->{method} eq 'verto.media') {
my $room_id = $roomid_by_callid->{$json->{params}->{callID}};
my $room = $bot_matrix_rooms{$room_id};
if ($json->{params}->{sdp}) {
# 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 => $json->{method},
}, $json->{id});
})->get;
}
}
else {
warn ("[Verto] unhandled method: " . $json->{method});
send_verto_json_response( {
method => $json->{method},
}, $json->{id});
}
}
elsif ($json->{result}) {
$requests->{$json->{id}}->done($json->{result});
}
elsif ($json->{error}) {
$requests->{$json->{id}}->fail($json->{error}->{message}, $json->{error});
}
}
}