using Gee; using Xmpp; using Dino.Entities; namespace Dino { public class Calls : StreamInteractionModule, Object { public signal void call_incoming(Call call, CallState state, Conversation conversation, bool video); public signal void call_outgoing(Call call, CallState state, Conversation conversation); public signal void call_terminated(Call call, string? reason_name, string? reason_text); public signal void conference_info_received(Call call, Xep.Coin.ConferenceInfo conference_info); public static ModuleIdentity IDENTITY = new ModuleIdentity("calls"); public string id { get { return IDENTITY.id; } } private StreamInteractor stream_interactor; private Database db; public HashMap current_jmi_request_call = new HashMap(Account.hash_func, Account.equals_func); public HashMap current_jmi_request_peer = new HashMap(Account.hash_func, Account.equals_func); public HashMap call_states = new HashMap(Call.hash_func, Call.equals_func); public static void start(StreamInteractor stream_interactor, Database db) { Calls m = new Calls(stream_interactor, db); stream_interactor.add_module(m); } private Calls(StreamInteractor stream_interactor, Database db) { this.stream_interactor = stream_interactor; this.db = db; stream_interactor.account_added.connect(on_account_added); } public async CallState? initiate_call(Conversation conversation, bool video) { Call call = new Call(); call.direction = Call.DIRECTION_OUTGOING; call.account = conversation.account; call.counterpart = conversation.counterpart; call.ourpart = stream_interactor.get_module(MucManager.IDENTITY).get_own_jid(conversation.counterpart, conversation.account) ?? conversation.account.full_jid; call.time = call.local_time = call.end_time = new DateTime.now_utc(); call.encryption = Encryption.UNKNOWN; call.state = Call.State.RINGING; stream_interactor.get_module(CallStore.IDENTITY).add_call(call, conversation); var call_state = new CallState(call, stream_interactor); call_state.we_should_send_video = video; call_state.we_should_send_audio = true; connect_call_state_signals(call_state); if (conversation.type_ == Conversation.Type.CHAT) { call.add_peer(conversation.counterpart); PeerState peer_state = call_state.set_first_peer(conversation.counterpart); yield peer_state.initiate_call(conversation.counterpart); } else { call_state.initiate_groupchat_call.begin(conversation.counterpart); } conversation.last_active = call.time; call_outgoing(call, call_state, conversation); return call_state; } public async bool can_do_audio_calls_async(Conversation conversation) { if (!can_do_audio_calls()) return false; if (conversation.type_ == Conversation.Type.CHAT) { return (yield get_call_resources(conversation.account, conversation.counterpart)).size > 0 || has_jmi_resources(conversation.counterpart); } else { return stream_interactor.get_module(MucManager.IDENTITY).is_private_room(conversation.account, conversation.counterpart); } } private bool can_do_audio_calls() { Plugins.VideoCallPlugin? plugin = Application.get_default().plugin_registry.video_call_plugin; if (plugin == null) return false; return plugin.supports("audio"); } public async bool can_do_video_calls_async(Conversation conversation) { if (!can_do_video_calls()) return false; if (conversation.type_ == Conversation.Type.CHAT) { return (yield get_call_resources(conversation.account, conversation.counterpart)).size > 0 || has_jmi_resources(conversation.counterpart); } else { return stream_interactor.get_module(MucManager.IDENTITY).is_private_room(conversation.account, conversation.counterpart); } } private bool can_do_video_calls() { Plugins.VideoCallPlugin? plugin = Application.get_default().plugin_registry.video_call_plugin; if (plugin == null) return false; return plugin.supports("video"); } public async Gee.List get_call_resources(Account account, Jid counterpart) { ArrayList ret = new ArrayList(); XmppStream? stream = stream_interactor.get_stream(account); if (stream == null) return ret; Gee.List? full_jids = stream.get_flag(Presence.Flag.IDENTITY).get_resources(counterpart); if (full_jids == null) return ret; foreach (Jid full_jid in full_jids) { bool supports_rtc = yield stream.get_module(Xep.JingleRtp.Module.IDENTITY).is_available(stream, full_jid); if (!supports_rtc) continue; ret.add(full_jid); } return ret; } public async bool contains_jmi_resources(Account account, Gee.List full_jids) { XmppStream? stream = stream_interactor.get_stream(account); if (stream == null) return false; foreach (Jid full_jid in full_jids) { bool does_jmi = yield stream_interactor.get_module(EntityInfo.IDENTITY).has_feature(account, full_jid, Xep.JingleMessageInitiation.NS_URI); if (does_jmi) return true; } return false; } public bool has_jmi_resources(Jid counterpart) { int64 jmi_resources = db.entity.select() .with(db.entity.jid_id, "=", db.get_jid_id(counterpart)) .join_with(db.entity_feature, db.entity.caps_hash, db.entity_feature.entity) .with(db.entity_feature.feature, "=", Xep.JingleMessageInitiation.NS_URI) .count(); return jmi_resources > 0; } public bool is_call_in_progress() { foreach (Call call in call_states.keys) { if (call.state == Call.State.IN_PROGRESS || call.state == Call.State.RINGING || call.state == Call.State.ESTABLISHING) { return true; } } return false; } private void on_incoming_call(Account account, Xep.Jingle.Session session) { if (!can_do_audio_calls()) { warning("Incoming call but no call support detected. Ignoring."); return; } Jid? muji_muc = null; bool counterpart_wants_video = false; foreach (Xep.Jingle.Content content in session.contents) { Xep.JingleRtp.Parameters? rtp_content_parameter = content.content_params as Xep.JingleRtp.Parameters; if (rtp_content_parameter == null) continue; muji_muc = rtp_content_parameter.muji_muc; if (rtp_content_parameter.media == "video" && session.senders_include_us(content.senders)) { counterpart_wants_video = true; } } // Check if this comes from a MUJI MUC => accept if (muji_muc != null) { debug("[%s] Incoming call from %s from MUJI muc %s", account.bare_jid.to_string(), session.peer_full_jid.to_string(), muji_muc.to_string()); foreach (CallState call_state in call_states.values) { if (call_state.group_call != null && call_state.group_call.muc_jid.equals(muji_muc)) { if (call_state.peers.keys.contains(session.peer_full_jid)) { PeerState peer_state = call_state.peers[session.peer_full_jid]; debug("[%s] Incoming call, we know the peer. Expected %s", account.bare_jid.to_string(), peer_state.waiting_for_inbound_muji_connection.to_string()); if (!peer_state.waiting_for_inbound_muji_connection) return; peer_state.set_session(session); debug(@"[%s] Accepting incoming MUJI call from %s", account.bare_jid.to_string(), session.peer_full_jid.to_string()); peer_state.accept(); } else { debug(@"[%s] Incoming call, but didn't see peer in MUC yet", account.bare_jid.to_string()); PeerState peer_state = new PeerState(session.peer_full_jid, call_state.call, stream_interactor); peer_state.set_session(session); call_state.add_peer(peer_state); } return; } } return; } debug(@"[%s] Incoming call from %s", account.bare_jid.to_string(), session.peer_full_jid.to_string()); // Check if we already accepted this call via Jingle Message Initiation => accept if (current_jmi_request_call.has_key(account) && current_jmi_request_peer[account].sid == session.sid && current_jmi_request_peer[account].we_should_send_video == counterpart_wants_video && current_jmi_request_peer[account].accepted_jmi) { current_jmi_request_peer[account].set_session(session); current_jmi_request_call[account].accept(); current_jmi_request_peer.unset(account); current_jmi_request_call.unset(account); return; } // This is a direct call without prior JMI. Ask user. PeerState peer_state = create_received_call(account, session.peer_full_jid, account.full_jid, counterpart_wants_video); peer_state.set_session(session); stream_interactor.module_manager.get_module(account, Xep.JingleRtp.Module.IDENTITY).session_info_type.send_ringing(session); } private PeerState create_received_call(Account account, Jid from, Jid to, bool video_requested) { Call call = new Call(); if (from.equals_bare(account.bare_jid)) { // Call requested by another of our devices call.direction = Call.DIRECTION_OUTGOING; call.ourpart = from; call.state = Call.State.OTHER_DEVICE; call.counterpart = to; } else { call.direction = Call.DIRECTION_INCOMING; call.ourpart = account.full_jid; call.state = Call.State.RINGING; call.counterpart = from; } call.add_peer(call.counterpart); call.account = account; call.time = call.local_time = call.end_time = new DateTime.now_utc(); call.encryption = Encryption.UNKNOWN; Conversation conversation = stream_interactor.get_module(ConversationManager.IDENTITY).create_conversation(call.counterpart.bare_jid, account, Conversation.Type.CHAT); stream_interactor.get_module(CallStore.IDENTITY).add_call(call, conversation); conversation.last_active = call.time; var call_state = new CallState(call, stream_interactor); connect_call_state_signals(call_state); PeerState peer_state = call_state.set_first_peer(call.counterpart); call_state.we_should_send_video = video_requested; call_state.we_should_send_audio = true; if (call.direction == Call.DIRECTION_INCOMING) { call_incoming(call, call_state, conversation, video_requested); } else { call_outgoing(call, call_state, conversation); } return peer_state; } private CallState? get_call_state_for_groupcall(Account account, Jid muc_jid) { foreach (CallState call_state in call_states.values) { if (!call_state.call.account.equals(account)) continue; if (call_state.group_call != null && call_state.group_call.muc_jid.equals(muc_jid)) return call_state; if (call_state.invited_to_group_call != null && call_state.invited_to_group_call.equals(muc_jid)) return call_state; } return null; } private async void on_muji_call_received(Account account, Jid inviter_jid, Jid muc_jid, Gee.List descriptions, string message_type) { debug("[%s] Muji call received from %s for MUC %s, type %s", account.bare_jid.to_string(), inviter_jid.to_string(), muc_jid.to_string(), message_type); foreach (Call call in call_states.keys) { if (!call.account.equals(account)) return; // We already know the call; this is a reflection of our own invite if (call_states[call].parent_muc.equals_bare(inviter_jid)) return; if (call.counterparts.contains(inviter_jid) && call_states[call].accepted) { // A call is converted into a group call. yield call_states[call].join_group_call(muc_jid); return; } } bool audio_requested = descriptions.any_match((description) => description.ns_uri == Xep.JingleRtp.NS_URI && description.get_attribute("media") == "audio"); bool video_requested = descriptions.any_match((description) => description.ns_uri == Xep.JingleRtp.NS_URI && description.get_attribute("media") == "video"); Call call = new Call(); call.direction = Call.DIRECTION_INCOMING; call.ourpart = account.full_jid; call.counterpart = inviter_jid; call.account = account; call.time = call.local_time = call.end_time = new DateTime.now_utc(); call.encryption = Encryption.UNKNOWN; call.state = Call.State.RINGING; Conversation? conversation = stream_interactor.get_module(ConversationManager.IDENTITY).get_conversation(inviter_jid.bare_jid, account); stream_interactor.get_module(CallStore.IDENTITY).add_call(call, conversation); conversation.last_active = call.time; CallState call_state = new CallState(call, stream_interactor); connect_call_state_signals(call_state); call_state.we_should_send_audio = true; call_state.we_should_send_video = video_requested; call_state.invited_to_group_call = muc_jid; call_state.group_call_inviter = inviter_jid; debug("[%s] on_muji_call_received accepting", account.bare_jid.to_string()); call_incoming(call_state.call, call_state, conversation, video_requested); } private void remove_call_from_datastructures(Call call) { if (current_jmi_request_call.has_key(call.account) && current_jmi_request_call[call.account].call.equals(call)) { current_jmi_request_call.unset(call.account); current_jmi_request_peer.unset(call.account); } call_states.unset(call); } private void connect_call_state_signals(CallState call_state) { call_states[call_state.call] = call_state; ulong terminated_handler_id = -1; terminated_handler_id = call_state.terminated.connect((who_terminated, reason_name, reason_text) => { remove_call_from_datastructures(call_state.call); call_terminated(call_state.call, reason_name, reason_text); call_state.disconnect(terminated_handler_id); }); } private void on_account_added(Account account) { Xep.Jingle.Module jingle_module = stream_interactor.module_manager.get_module(account, Xep.Jingle.Module.IDENTITY); jingle_module.session_initiate_received.connect((stream, session) => { foreach (Xep.Jingle.Content content in session.contents) { Xep.JingleRtp.Parameters? rtp_content_parameter = content.content_params as Xep.JingleRtp.Parameters; if (rtp_content_parameter != null) { on_incoming_call(account, session); break; } } }); Xep.JingleMessageInitiation.Module mi_module = stream_interactor.module_manager.get_module(account, Xep.JingleMessageInitiation.Module.IDENTITY); mi_module.session_proposed.connect((from, to, sid, descriptions) => { if (!can_do_audio_calls()) { warning("Incoming call but no call support detected. Ignoring."); return; } bool audio_requested = descriptions.any_match((description) => description.ns_uri == Xep.JingleRtp.NS_URI && description.get_attribute("media") == "audio"); bool video_requested = descriptions.any_match((description) => description.ns_uri == Xep.JingleRtp.NS_URI && description.get_attribute("media") == "video"); if (!audio_requested && !video_requested) return; PeerState peer_state = create_received_call(account, from, to, video_requested); peer_state.sid = sid; peer_state.we_should_send_audio = true; peer_state.we_should_send_video = video_requested; current_jmi_request_peer[account] = peer_state; current_jmi_request_call[account] = call_states[peer_state.call]; }); mi_module.session_accepted.connect((from, to, sid) => { if (!current_jmi_request_peer.has_key(account) || current_jmi_request_peer[account].sid != sid) return; if (from.equals_bare(account.bare_jid)) { // Carboned message from our account // Ignore carbon from ourselves if (from.equals(account.full_jid)) return; Call call = current_jmi_request_peer[account].call; call.ourpart = from; call.state = Call.State.OTHER_DEVICE; remove_call_from_datastructures(call); } else if (from.equals_bare(current_jmi_request_peer[account].jid) && to.equals(account.full_jid)) { // Message from our peer // We proposed the call // We know the full jid of our peer now current_jmi_request_call[account].rename_peer(current_jmi_request_peer[account].jid, from); current_jmi_request_peer[account].call_resource.begin(from); } }); mi_module.session_rejected.connect((from, to, sid) => { if (!current_jmi_request_peer.has_key(account) || current_jmi_request_peer[account].sid != sid) return; Call call = current_jmi_request_peer[account].call; bool outgoing_reject = call.direction == Call.DIRECTION_OUTGOING && from.equals_bare(call.counterparts[0]); bool incoming_reject = call.direction == Call.DIRECTION_INCOMING && from.equals_bare(account.bare_jid); if (!outgoing_reject && !incoming_reject) return; // We don't care if a single person in a group call rejected the call if (incoming_reject && call_states[call].group_call != null) return; call.state = Call.State.DECLINED; call_states[call].terminated(from, Xep.Jingle.ReasonElement.DECLINE, "JMI reject"); remove_call_from_datastructures(call); }); mi_module.session_retracted.connect((from, to, sid) => { if (!current_jmi_request_peer.has_key(account) || current_jmi_request_peer[account].sid != sid) return; Call call = current_jmi_request_peer[account].call; bool outgoing_retract = call.direction == Call.DIRECTION_OUTGOING && from.equals_bare(account.bare_jid); bool incoming_retract = call.direction == Call.DIRECTION_INCOMING && from.equals_bare(call.counterpart); if (!(outgoing_retract || incoming_retract)) return; call.state = Call.State.MISSED; call_states[call].terminated(from, Xep.Jingle.ReasonElement.CANCEL, "JMI retract"); remove_call_from_datastructures(call); }); Xep.MujiMeta.Module muji_meta_module = stream_interactor.module_manager.get_module(account, Xep.MujiMeta.Module.IDENTITY); muji_meta_module.call_proposed.connect((inviter_jid, to, muc_jid, descriptions, message_type) => { if (inviter_jid.equals_bare(account.bare_jid)) return; on_muji_call_received.begin(account, inviter_jid, muc_jid, descriptions, message_type); }); muji_meta_module.call_accepted.connect((from_jid, muc_jid, message_type) => { if (!from_jid.equals_bare(account.bare_jid)) return; // We accepted the call from another device CallState? call_state = get_call_state_for_groupcall(account, muc_jid); if (call_state == null) return; call_state.call.state = Call.State.OTHER_DEVICE; remove_call_from_datastructures(call_state.call); }); muji_meta_module.call_retracted.connect((from_jid, to_jid, muc_jid, message_type) => { if (from_jid.equals_bare(account.bare_jid)) return; // The call was retracted by the counterpart CallState? call_state = get_call_state_for_groupcall(account, muc_jid); if (call_state == null) return; if (call_state.call.state != Call.State.RINGING) { debug("%s tried to retract a call that's in state %s. Ignoring.", from_jid.to_string(), call_state.call.state.to_string()); return; } // TODO prevent other MUC occupants from retracting a call call_state.call.state = Call.State.MISSED; remove_call_from_datastructures(call_state.call); }); muji_meta_module.call_rejected.connect((from_jid, to_jid, muc_jid, message_type) => { if (from_jid.equals_bare(account.bare_jid)) return; debug(@"[%s] %s rejected our MUJI invite to %s", account.bare_jid.to_string(), from_jid.to_string(), muc_jid.to_string()); }); stream_interactor.module_manager.get_module(account, Xep.Coin.Module.IDENTITY).coin_info_received.connect((jid, info) => { foreach (Call call in call_states.keys) { if (call.counterparts[0].equals_bare(jid)) { conference_info_received(call, info); return; } } }); } } }