using Dino.Entities; using Gee; using Xmpp; public class Dino.CallState : Object { public signal void terminated(Jid who_terminated, string? reason_name, string? reason_text); public signal void peer_joined(Jid jid, PeerState peer_state); public signal void peer_left(Jid jid, PeerState peer_state, string? reason_name, string? reason_text); public StreamInteractor stream_interactor; public Plugins.VideoCallPlugin call_plugin = Dino.Application.get_default().plugin_registry.video_call_plugin; public Call call; public Jid? parent_muc { get; set; } public Jid? invited_to_group_call = null; public bool accepted { get; private set; default=false; } public bool use_cim = false; public string? cim_call_id = null; public Jid? cim_counterpart = null; public string cim_message_type { get; set; default=Xmpp.MessageStanza.TYPE_CHAT; } public Xep.Muji.GroupCall? group_call { get; set; } public bool we_should_send_audio { get; set; default=false; } public bool we_should_send_video { get; set; default=false; } public HashMap peers = new HashMap(Jid.hash_func, Jid.equals_func); private Plugins.MediaDevice selected_microphone_device; private Plugins.MediaDevice selected_speaker_device; private Plugins.MediaDevice selected_video_device; public CallState(Call call, StreamInteractor stream_interactor) { this.call = call; this.stream_interactor = stream_interactor; if (call.direction == Call.DIRECTION_OUTGOING) { accepted = true; Timeout.add_seconds(30, () => { if (this == null) return false; // TODO enough? if (call.state == Call.State.ESTABLISHING) { call.state = Call.State.MISSED; terminated(call.account.bare_jid, null, null); } return false; }); } } internal async void initiate_groupchat_call(Jid muc) { parent_muc = muc; cim_message_type = MessageStanza.TYPE_GROUPCHAT; if (this.group_call == null) yield convert_into_group_call(); if (this.group_call == null) return; // The user might have retracted the call in the meanwhile if (this.call.state != Call.State.RINGING) return; XmppStream stream = stream_interactor.get_stream(call.account); if (stream == null) return; Gee.List occupants = stream_interactor.get_module(MucManager.IDENTITY).get_other_occupants(muc, call.account); foreach (Jid occupant in occupants) { Jid? real_jid = stream_interactor.get_module(MucManager.IDENTITY).get_real_jid(occupant, call.account); if (real_jid == null) continue; debug(@"Adding MUC member as MUJI MUC owner %s", real_jid.bare_jid.to_string()); yield stream.get_module(Xep.Muc.Module.IDENTITY).change_affiliation(stream, group_call.muc_jid, real_jid.bare_jid, null, "owner"); } stream.get_module(Xep.CallInvites.Module.IDENTITY).send_muji_propose(stream, cim_call_id, muc, group_call.muc_jid, we_should_send_video, cim_message_type); } internal PeerState set_first_peer(Jid peer) { var peer_state = new PeerState(peer, call, this, stream_interactor); peer_state.first_peer = true; add_peer(peer_state); return peer_state; } internal void add_peer(PeerState peer) { call.add_peer(peer.jid.bare_jid); connect_peer_signals(peer); peer_joined(peer.jid, peer); } internal void on_peer_stream_created(PeerState peer, string media) { if (media == "audio") { call_plugin.set_device(peer.get_audio_stream(), get_microphone_device()); call_plugin.set_device(peer.get_audio_stream(), get_speaker_device()); } else if (media == "video") { call_plugin.set_device(peer.get_video_stream(), get_video_device()); } } public void accept() { accepted = true; call.state = Call.State.ESTABLISHING; if (use_cim) { XmppStream stream = stream_interactor.get_stream(call.account); if (stream == null) return; StanzaNode? inner_node = null; if (group_call != null) { inner_node = new StanzaNode.build("muji", Xep.Muji.NS_URI).add_self_xmlns() .put_attribute("room", group_call.muc_jid.to_string()); } else if (peers.size == 1) { foreach (PeerState peer in peers.values) { inner_node = new StanzaNode.build("jingle", Xep.CallInvites.NS_URI) .put_attribute("sid", peer.sid); } } stream.get_module(Xep.CallInvites.Module.IDENTITY).send_accept(stream, cim_counterpart, cim_call_id, inner_node, cim_message_type); } else { foreach (PeerState peer in peers.values) { peer.accept(); } } if (invited_to_group_call != null) { join_group_call.begin(invited_to_group_call); } } public void reject() { call.state = Call.State.DECLINED; if (use_cim) { XmppStream stream = stream_interactor.get_stream(call.account); if (stream == null) return; stream.get_module(Xep.CallInvites.Module.IDENTITY).send_reject(stream, cim_counterpart, cim_call_id, cim_message_type); } var peers_cpy = new ArrayList(); peers_cpy.add_all(peers.values); foreach (PeerState peer in peers_cpy) { peer.reject(); } terminated(call.account.bare_jid, null, null); } public void end(string? reason_text = null) { var peers_cpy = new ArrayList(); peers_cpy.add_all(peers.values); if (group_call != null) { XmppStream stream = stream_interactor.get_stream(call.account); if (stream != null) { stream.get_module(Xep.Muc.Module.IDENTITY).exit(stream, group_call.muc_jid); } } if (call.state == Call.State.IN_PROGRESS || call.state == Call.State.ESTABLISHING) { foreach (PeerState peer in peers_cpy) { peer.end(Xep.Jingle.ReasonElement.SUCCESS, reason_text); } if (use_cim) { XmppStream stream = stream_interactor.get_stream(call.account); if (stream == null) return; stream.get_module(Xep.CallInvites.Module.IDENTITY).send_finish(stream, cim_counterpart, cim_call_id, cim_message_type); } call.state = Call.State.ENDED; } else if (call.state == Call.State.RINGING) { foreach (PeerState peer in peers_cpy) { peer.end(Xep.Jingle.ReasonElement.CANCEL, reason_text); } if (call.direction == Call.DIRECTION_OUTGOING && use_cim) { XmppStream stream = stream_interactor.get_stream(call.account); if (stream == null) return; stream.get_module(Xep.CallInvites.Module.IDENTITY).send_retract(stream, cim_counterpart, cim_call_id, cim_message_type); } call.state = Call.State.MISSED; } else { return; } call.end_time = new DateTime.now_utc(); terminated(call.account.bare_jid, null, reason_text); } public void mute_own_audio(bool mute) { we_should_send_audio = !mute; foreach (PeerState peer in peers.values) { peer.mute_own_audio(mute); } } public void mute_own_video(bool mute) { we_should_send_video = !mute; foreach (PeerState peer in peers.values) { peer.mute_own_video(mute); } } public bool should_we_send_video() { return we_should_send_video; } public async void invite_to_call(Jid invitee) { if (this.group_call == null) yield convert_into_group_call(); if (this.group_call == null) return; XmppStream stream = stream_interactor.get_stream(call.account); if (stream == null) return; debug("[%s] Inviting to muji call %s", call.account.bare_jid.to_string(), invitee.to_string()); yield stream.get_module(Xep.Muc.Module.IDENTITY).change_affiliation(stream, group_call.muc_jid, invitee, null, "owner"); stream.get_module(Xep.CallInvites.Module.IDENTITY).send_muji_propose(stream, cim_call_id, invitee, group_call.muc_jid, we_should_send_video, "chat"); // If the peer hasn't accepted within a minute, retract the invite // TODO this should be unset when we retract the invite. otherwise a second invite attempt might break due to this Timeout.add_seconds(60, () => { if (this == null) return false; bool contains_peer = false; foreach (Jid peer in peers.keys) { if (peer.equals_bare(invitee)) { contains_peer = true; } } if (!contains_peer) { debug("[%s] Retracting invite to %s from %s", call.account.bare_jid.to_string(), group_call.muc_jid.to_string(), invitee.to_string()); // stream.get_module(Xep.CallInvites.Module.IDENTITY).send_retract(stream, invitee, invite_id); // stream.get_module(Xep.Muc.Module.IDENTITY).change_affiliation.begin(stream, group_call.muc_jid, invitee, null, "none"); } return false; }); } public Plugins.MediaDevice? get_microphone_device() { if (selected_microphone_device == null) { if (!peers.is_empty) { var audio_stream = peers.values.to_array()[0].get_audio_stream(); selected_microphone_device = call_plugin.get_device(audio_stream, false); } if (selected_microphone_device == null) { selected_microphone_device = call_plugin.get_preferred_device("audio", false); } } return selected_microphone_device; } public Plugins.MediaDevice? get_speaker_device() { if (selected_speaker_device == null) { if (!peers.is_empty) { var audio_stream = peers.values.to_array()[0].get_audio_stream(); selected_speaker_device = call_plugin.get_device(audio_stream, true); } if (selected_speaker_device == null) { selected_speaker_device = call_plugin.get_preferred_device("audio", true); } } return selected_speaker_device; } public Plugins.MediaDevice? get_video_device() { if (selected_video_device == null) { if (!peers.is_empty) { var video_stream = peers.values.to_array()[0].get_video_stream(); selected_video_device = call_plugin.get_device(video_stream, false); } if (selected_video_device == null) { selected_video_device = call_plugin.get_preferred_device("video", false); } } return selected_video_device; } public void set_audio_device(Plugins.MediaDevice? device) { if (device.incoming) { selected_speaker_device = device; } else { selected_microphone_device = device; } foreach (PeerState peer_state in peers.values) { call_plugin.set_device(peer_state.get_audio_stream(), device); } } public void set_video_device(Plugins.MediaDevice? device) { selected_video_device = device; foreach (PeerState peer_state in peers.values) { call_plugin.set_device(peer_state.get_video_stream(), device); } } internal void rename_peer(Jid from_jid, Jid to_jid) { debug("[%s] Renaming %s to %s exists %s", call.account.bare_jid.to_string(), from_jid.to_string(), to_jid.to_string(), peers.has_key(from_jid).to_string()); PeerState? peer_state = peers[from_jid]; if (peer_state == null) return; // Adjust the internal mapping of this `PeerState` object peers.unset(from_jid); peers[to_jid] = peer_state; peer_state.jid = to_jid; } private void on_call_terminated(Jid who_terminated, bool we_terminated, string? reason_name, string? reason_text) { if (call.state == Call.State.RINGING || call.state == Call.State.IN_PROGRESS || call.state == Call.State.ESTABLISHING) { call.end_time = new DateTime.now_utc(); } if (call.state == Call.State.IN_PROGRESS) { call.state = Call.State.ENDED; } else if (call.state == Call.State.RINGING || call.state == Call.State.ESTABLISHING) { if (reason_name == Xep.Jingle.ReasonElement.DECLINE) { call.state = Call.State.DECLINED; } else { call.state = Call.State.FAILED; } } terminated(who_terminated, reason_name, reason_text); } private void connect_peer_signals(PeerState peer_state) { peers[peer_state.jid] = peer_state; this.bind_property("we-should-send-audio", peer_state, "we-should-send-audio", BindingFlags.SYNC_CREATE | BindingFlags.BIDIRECTIONAL); this.bind_property("we-should-send-video", peer_state, "we-should-send-video", BindingFlags.SYNC_CREATE | BindingFlags.BIDIRECTIONAL); this.bind_property("group-call", peer_state, "group-call", BindingFlags.SYNC_CREATE | BindingFlags.BIDIRECTIONAL); peer_state.stream_created.connect((peer, media) => { on_peer_stream_created(peer, media); }); peer_state.session_terminated.connect((we_terminated, reason_name, reason_text) => { debug("[%s] Peer left %s: %s %s (%i peers remaining)", call.account.bare_jid.to_string(), reason_text ?? "", reason_name ?? "", peer_state.jid.to_string(), peers.size); handle_peer_left(peer_state, we_terminated, reason_name, reason_text); }); } public async bool can_convert_into_groupcall() { if (peers.size == 0) return false; Jid peer = peers.keys.to_array()[0]; bool peer_has_feature = yield stream_interactor.get_module(EntityInfo.IDENTITY).has_feature(call.account, peer, Xep.Muji.NS_URI); bool can_initiate = stream_interactor.get_module(Calls.IDENTITY).can_initiate_groupcall(call.account); return peer_has_feature && can_initiate; } public async void convert_into_group_call() { XmppStream stream = stream_interactor.get_stream(call.account); if (stream == null) return; Jid? muc_jid = stream_interactor.get_module(MucManager.IDENTITY).default_muc_server[call.account]; if (muc_jid == null) { warning("Failed to initiate group call: MUC server not known."); return; } if (cim_call_id == null) cim_call_id = Xmpp.random_uuid(); muc_jid = new Jid("%08x@".printf(Random.next_int()) + muc_jid.to_string()); // TODO longer? debug("[%s] Converting call to groupcall %s", call.account.bare_jid.to_string(), muc_jid.to_string()); yield join_group_call(muc_jid); Xep.DataForms.DataForm? data_form = yield stream_interactor.get_module(MucManager.IDENTITY).get_config_form(call.account, muc_jid); if (data_form == null) return; foreach (Xep.DataForms.DataForm.Field field in data_form.fields) { switch (field.var) { case "muc#roomconfig_allowinvites": if (field.type_ == Xep.DataForms.DataForm.Type.BOOLEAN) { ((Xep.DataForms.DataForm.BooleanField) field).value = true; } break; case "muc#roomconfig_persistentroom": if (field.type_ == Xep.DataForms.DataForm.Type.BOOLEAN) { ((Xep.DataForms.DataForm.BooleanField) field).value = false; } break; case "muc#roomconfig_membersonly": if (field.type_ == Xep.DataForms.DataForm.Type.BOOLEAN) { ((Xep.DataForms.DataForm.BooleanField) field).value = true; } break; case "muc#roomconfig_whois": if (field.type_ == Xep.DataForms.DataForm.Type.LIST_SINGLE) { ((Xep.DataForms.DataForm.ListSingleField) field).value = "anyone"; } break; } } yield stream_interactor.get_module(MucManager.IDENTITY).set_config_form(call.account, muc_jid, data_form); foreach (Jid peer_jid in peers.keys) { debug("[%s] Group call inviting %s", call.account.bare_jid.to_string(), peer_jid.to_string()); yield invite_to_call(peer_jid); } } public async void join_group_call(Jid muc_jid) { debug("[%s] Joining group call %s", call.account.bare_jid.to_string(), muc_jid.to_string()); XmppStream stream = stream_interactor.get_stream(call.account); if (stream == null) return; this.group_call = yield stream.get_module(Xep.Muji.Module.IDENTITY).join_call(stream, muc_jid, we_should_send_video); if (this.group_call == null) { warning("[%s] Couldn't join MUJI MUC", call.account.bare_jid.to_string()); return; } this.group_call.peer_joined.connect((jid) => { debug("[%s] Group call peer joined: %s", call.account.bare_jid.to_string(), jid.to_string()); // Newly joined peers have to call us, not the other way round // Maybe they called us already. Accept the call. // (Except for the first peer, we already have a connection to that one.) if (peers.has_key(jid)) { if (!peers[jid].first_peer) { peers[jid].accept(); } // else: Connection to first peer already active } else { var peer_state = new PeerState(jid, call, this, stream_interactor); peer_state.waiting_for_inbound_muji_connection = true; debug("[%s] Waiting for call from %s", call.account.bare_jid.to_string(), jid.to_string()); add_peer(peer_state); } }); this.group_call.peer_left.connect((jid) => { debug("[%s] Group call peer left: %s", call.account.bare_jid.to_string(), jid.to_string()); PeerState? peer_state = peers[jid]; if (peer_state == null) return; peer_state.end(Xep.Jingle.ReasonElement.CANCEL, "Peer left the MUJI MUC"); handle_peer_left(peer_state, false, Xep.Jingle.ReasonElement.CANCEL, "Peer left the MUJI MUC"); }); if (group_call.peers_to_connect_to.size > 4) { end("Call too full - P2p calls don't work well with many participants"); return; } // Call all peers that are in the room already foreach (Jid peer_jid in group_call.peers_to_connect_to) { // Don't establish connection if we have one already (the person that invited us to the call) if (peers.has_key(peer_jid)) continue; debug("[%s] Calling %s because they were in the MUC already", call.account.bare_jid.to_string(), peer_jid.to_string()); PeerState peer_state = new PeerState(peer_jid, call, this, stream_interactor); add_peer(peer_state); peer_state.call_resource.begin(peer_jid); } debug("[%s] Finished joining MUJI muc %s", call.account.bare_jid.to_string(), muc_jid.to_string()); } private void handle_peer_left(PeerState peer_state, bool we_terminated, string? reason_name, string? reason_text) { if (!peers.has_key(peer_state.jid)) return; peers.unset(peer_state.jid); if (peers.is_empty) { if (group_call != null) { group_call.leave(stream_interactor.get_stream(call.account)); on_call_terminated(peer_state.jid, we_terminated, null, "All participants have left the call"); } else { on_call_terminated(peer_state.jid, we_terminated, reason_name, reason_text); } } else { peer_left(peer_state.jid, peer_state, reason_name, reason_text); } } }