453 lines
20 KiB
Vala
453 lines
20 KiB
Vala
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using Dino.Entities;
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using Gee;
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using Xmpp;
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public class Dino.PeerState : Object {
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public signal void counterpart_sends_video_updated(bool mute);
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public signal void info_received(Xep.JingleRtp.CallSessionInfo session_info);
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public signal void connection_ready();
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public signal void session_terminated(bool we_terminated, string? reason_name, string? reason_text);
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public signal void encryption_updated(Xep.Jingle.ContentEncryption? audio_encryption, Xep.Jingle.ContentEncryption? video_encryption, bool same);
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public StreamInteractor stream_interactor;
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public Calls calls;
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public Call call;
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public Jid jid;
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public Xep.Jingle.Session session;
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public string sid;
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public string internal_id = Xmpp.random_uuid();
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public Xep.JingleRtp.Parameters? audio_content_parameter = null;
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public Xep.JingleRtp.Parameters? video_content_parameter = null;
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public Xep.Jingle.Content? audio_content = null;
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public Xep.Jingle.Content? video_content = null;
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public Xep.Jingle.ContentEncryption? video_encryption = null;
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public Xep.Jingle.ContentEncryption? audio_encryption = null;
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public bool encryption_keys_same = false;
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public HashMap<string, Xep.Jingle.ContentEncryption>? video_encryptions = null;
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public HashMap<string, Xep.Jingle.ContentEncryption>? audio_encryptions = null;
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public bool first_peer = false;
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public bool accepted_jmi = false;
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public bool waiting_for_inbound_muji_connection = false;
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public Xep.Muji.GroupCall? group_call { get; set; }
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public bool counterpart_sends_video = false;
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public bool we_should_send_audio { get; set; default=false; }
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public bool we_should_send_video { get; set; default=false; }
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public PeerState(Jid jid, Call call, StreamInteractor stream_interactor) {
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this.jid = jid;
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this.call = call;
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this.stream_interactor = stream_interactor;
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this.calls = stream_interactor.get_module(Calls.IDENTITY);
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var session_info_type = stream_interactor.module_manager.get_module(call.account, Xep.JingleRtp.Module.IDENTITY).session_info_type;
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session_info_type.mute_update_received.connect((session,mute, name) => {
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if (this.sid != session.sid) return;
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foreach (Xep.Jingle.Content content in session.contents) {
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if (name == null || content.content_name == name) {
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Xep.JingleRtp.Parameters? rtp_content_parameter = content.content_params as Xep.JingleRtp.Parameters;
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if (rtp_content_parameter != null) {
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on_counterpart_mute_update(mute, rtp_content_parameter.media);
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}
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}
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}
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});
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session_info_type.info_received.connect((session, session_info) => {
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if (this.sid != session.sid) return;
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info_received(session_info);
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});
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}
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public async void initiate_call(Jid counterpart) {
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Gee.List<Jid> call_resources = yield calls.get_call_resources(call.account, counterpart);
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bool do_jmi = false;
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Jid? jid_for_direct = null;
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if (yield calls.contains_jmi_resources(call.account, call_resources)) {
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do_jmi = true;
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} else if (!call_resources.is_empty) {
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jid_for_direct = call_resources[0];
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} else if (calls.has_jmi_resources(jid)) {
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do_jmi = true;
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}
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sid = Xmpp.random_uuid();
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if (do_jmi) {
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XmppStream? stream = stream_interactor.get_stream(call.account);
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calls.current_jmi_request_call[call.account] = calls.call_states[call];
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calls.current_jmi_request_peer[call.account] = this;
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var descriptions = new ArrayList<StanzaNode>();
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descriptions.add(new StanzaNode.build("description", Xep.JingleRtp.NS_URI).add_self_xmlns().put_attribute("media", "audio"));
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if (we_should_send_video) {
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descriptions.add(new StanzaNode.build("description", Xep.JingleRtp.NS_URI).add_self_xmlns().put_attribute("media", "video"));
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}
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stream.get_module(Xmpp.Xep.JingleMessageInitiation.Module.IDENTITY).send_session_propose_to_peer(stream, jid, sid, descriptions);
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} else if (jid_for_direct != null) {
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yield call_resource(jid_for_direct);
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}
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}
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public async void call_resource(Jid full_jid) {
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XmppStream? stream = stream_interactor.get_stream(call.account);
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if (stream == null) return;
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if (sid == null) sid = Xmpp.random_uuid();
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Xep.Jingle.Session session = yield stream.get_module(Xep.JingleRtp.Module.IDENTITY).start_call(stream, full_jid, we_should_send_video, sid, group_call != null ? group_call.muc_jid : null);
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set_session(session);
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}
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public void accept() {
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if (session != null) {
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foreach (Xep.Jingle.Content content in session.contents) {
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content.accept();
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}
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} else {
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// Only a JMI so far
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XmppStream stream = stream_interactor.get_stream(call.account);
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if (stream == null) return;
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accepted_jmi = true;
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calls.current_jmi_request_call[call.account] = calls.call_states[call];
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calls.current_jmi_request_peer[call.account] = this;
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stream.get_module(Xep.JingleMessageInitiation.Module.IDENTITY).send_session_accept_to_self(stream, sid);
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stream.get_module(Xep.JingleMessageInitiation.Module.IDENTITY).send_session_proceed_to_peer(stream, jid, sid);
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}
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}
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public void reject() {
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call.state = Call.State.DECLINED;
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if (session != null) {
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foreach (Xep.Jingle.Content content in session.contents) {
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content.reject();
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}
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} else {
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// Only a JMI so far
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XmppStream stream = stream_interactor.get_stream(call.account);
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if (stream == null) return;
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stream.get_module(Xep.JingleMessageInitiation.Module.IDENTITY).send_session_reject_to_peer(stream, jid, sid);
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stream.get_module(Xep.JingleMessageInitiation.Module.IDENTITY).send_session_reject_to_self(stream, sid);
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}
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}
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public void end(string terminate_reason, string? reason_text = null) {
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switch (terminate_reason) {
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case Xep.Jingle.ReasonElement.SUCCESS:
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if (session != null) {
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session.terminate(terminate_reason, reason_text, "success");
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}
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break;
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case Xep.Jingle.ReasonElement.CANCEL:
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if (session != null) {
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session.terminate(terminate_reason, reason_text, "cancel");
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} else if (group_call != null) {
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// We don't have to do anything (?)
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} else {
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// Only a JMI so far
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XmppStream? stream = stream_interactor.get_stream(call.account);
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if (stream == null) return;
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stream.get_module(Xep.JingleMessageInitiation.Module.IDENTITY).send_session_retract_to_peer(stream, jid, sid);
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}
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break;
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}
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}
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internal void mute_own_audio(bool mute) {
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// Call isn't fully established yet. Audio will be muted once the stream is created.
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if (session == null || audio_content_parameter == null || audio_content_parameter.stream == null) return;
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Xep.JingleRtp.Stream stream = audio_content_parameter.stream;
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// Inform our counterpart that we (un)muted our audio
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stream_interactor.module_manager.get_module(call.account, Xep.JingleRtp.Module.IDENTITY).session_info_type.send_mute(session, mute, "audio");
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// Start/Stop sending audio data
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Application.get_default().plugin_registry.video_call_plugin.set_pause(stream, mute);
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}
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internal void mute_own_video(bool mute) {
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if (session == null) {
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// Call hasn't been established yet
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return;
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}
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Xep.JingleRtp.Module rtp_module = stream_interactor.module_manager.get_module(call.account, Xep.JingleRtp.Module.IDENTITY);
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if (video_content_parameter != null &&
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video_content_parameter.stream != null &&
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session.senders_include_us(video_content.senders)) {
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// A video content already exists
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// Start/Stop sending video data
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Xep.JingleRtp.Stream stream = video_content_parameter.stream;
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if (stream != null) {
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Application.get_default().plugin_registry.video_call_plugin.set_pause(stream, mute);
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}
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// Inform our counterpart that we started/stopped our video
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rtp_module.session_info_type.send_mute(session, mute, "video");
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} else if (!mute) {
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// Add a new video content
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XmppStream stream = stream_interactor.get_stream(call.account);
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rtp_module.add_outgoing_video_content.begin(stream, session, group_call != null ? group_call.muc_jid : null, (_, res) => {
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if (video_content_parameter == null) {
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Xep.Jingle.Content content = rtp_module.add_outgoing_video_content.end(res);
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Xep.JingleRtp.Parameters? rtp_content_parameter = content.content_params as Xep.JingleRtp.Parameters;
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if (rtp_content_parameter != null) {
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connect_content_signals(content, rtp_content_parameter);
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}
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}
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});
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}
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// If video_content_parameter == null && !mute we're trying to mute a non-existant feed. It will be muted as soon as it is created.
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}
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public Xep.JingleRtp.Stream? get_video_stream(Call call) {
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if (video_content_parameter != null) {
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return video_content_parameter.stream;
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}
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return null;
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}
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public Xep.JingleRtp.Stream? get_audio_stream(Call call) {
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if (audio_content_parameter != null) {
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return audio_content_parameter.stream;
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}
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return null;
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}
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internal void set_session(Xep.Jingle.Session session) {
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this.session = session;
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this.sid = session.sid;
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session.terminated.connect((stream, we_terminated, reason_name, reason_text) =>
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session_terminated(we_terminated, reason_name, reason_text)
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);
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session.additional_content_add_incoming.connect((session,stream, content) =>
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on_incoming_content_add(stream, session, content)
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);
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foreach (Xep.Jingle.Content content in session.contents) {
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Xep.JingleRtp.Parameters? rtp_content_parameter = content.content_params as Xep.JingleRtp.Parameters;
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if (rtp_content_parameter == null) continue;
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connect_content_signals(content, rtp_content_parameter);
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}
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}
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public PeerInfo get_info() {
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var ret = new PeerInfo();
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if (audio_content_parameter != null) {
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ret.audio_rtcp_ready = audio_content_parameter.rtcp_ready;
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ret.audio_rtp_ready = audio_content_parameter.rtp_ready;
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if (audio_content_parameter.agreed_payload_type != null) {
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ret.audio_codec = audio_content_parameter.agreed_payload_type.name;
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ret.audio_clockrate = audio_content_parameter.agreed_payload_type.clockrate;
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}
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}
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if (audio_content != null) {
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Xmpp.Xep.Jingle.ComponentConnection? component0 = audio_content.get_transport_connection(1);
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if (component0 != null) {
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ret.audio_bytes_received = component0.bytes_received;
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ret.audio_bytes_sent = component0.bytes_sent;
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}
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}
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if (video_content_parameter != null) {
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ret.video_content_exists = true;
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ret.video_rtcp_ready = video_content_parameter.rtcp_ready;
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ret.video_rtp_ready = video_content_parameter.rtp_ready;
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if (video_content_parameter.agreed_payload_type != null) {
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ret.video_codec = video_content_parameter.agreed_payload_type.name;
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}
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}
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if (video_content != null) {
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Xmpp.Xep.Jingle.ComponentConnection? component0 = video_content.get_transport_connection(1);
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if (component0 != null) {
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ret.video_bytes_received = component0.bytes_received;
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ret.video_bytes_sent = component0.bytes_sent;
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}
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}
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return ret;
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}
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private void connect_content_signals(Xep.Jingle.Content content, Xep.JingleRtp.Parameters rtp_content_parameter) {
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if (rtp_content_parameter.media == "audio") {
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audio_content = content;
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audio_content_parameter = rtp_content_parameter;
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} else if (rtp_content_parameter.media == "video") {
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video_content = content;
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video_content_parameter = rtp_content_parameter;
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}
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debug(@"[%s] %s connecting content signals %s", call.account.bare_jid.to_string(), jid.to_string(), rtp_content_parameter.media);
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rtp_content_parameter.stream_created.connect((stream) => on_stream_created(rtp_content_parameter.media, stream));
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rtp_content_parameter.connection_ready.connect((status) => on_connection_ready(content, rtp_content_parameter.media));
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content.senders_modify_incoming.connect((content, proposed_senders) => {
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if (content.session.senders_include_us(content.senders) != content.session.senders_include_us(proposed_senders)) {
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warning("counterpart set us to (not)sending %s. ignoring", content.content_name);
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return;
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}
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if (!content.session.senders_include_counterpart(content.senders) && content.session.senders_include_counterpart(proposed_senders)) {
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// Counterpart wants to start sending. Ok.
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content.accept_content_modify(proposed_senders);
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on_counterpart_mute_update(false, "video");
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}
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});
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}
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private void on_incoming_content_add(XmppStream stream, Xep.Jingle.Session session, Xep.Jingle.Content content) {
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Xep.JingleRtp.Parameters? rtp_content_parameter = content.content_params as Xep.JingleRtp.Parameters;
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if (rtp_content_parameter == null) {
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content.reject();
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return;
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}
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// Our peer shouldn't tell us to start sending, that's for us to initiate
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if (session.senders_include_us(content.senders)) {
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if (session.senders_include_counterpart(content.senders)) {
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// If our peer wants to send, let them
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content.modify(session.we_initiated ? Xep.Jingle.Senders.RESPONDER : Xep.Jingle.Senders.INITIATOR);
|
||
|
|
} else {
|
||
|
|
// If only we're supposed to send, reject
|
||
|
|
content.reject();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
connect_content_signals(content, rtp_content_parameter);
|
||
|
|
content.accept();
|
||
|
|
}
|
||
|
|
|
||
|
|
private void on_stream_created(string media, Xep.JingleRtp.Stream stream) {
|
||
|
|
if (media == "video" && stream.receiving) {
|
||
|
|
counterpart_sends_video = true;
|
||
|
|
video_content_parameter.connection_ready.connect((status) => {
|
||
|
|
counterpart_sends_video_updated(false);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
// Outgoing audio/video might have been muted in the meanwhile.
|
||
|
|
if (media == "video" && !we_should_send_video) {
|
||
|
|
mute_own_video(true);
|
||
|
|
} else if (media == "audio" && !we_should_send_audio) {
|
||
|
|
mute_own_audio(true);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private void on_counterpart_mute_update(bool mute, string? media) {
|
||
|
|
if (!call.equals(call)) return;
|
||
|
|
|
||
|
|
if (media == "video") {
|
||
|
|
counterpart_sends_video = !mute;
|
||
|
|
debug(@"[%s] %s video muted %s", call.account.bare_jid.to_string(), jid.to_string(), mute.to_string());
|
||
|
|
counterpart_sends_video_updated(mute);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
private void on_connection_ready(Xep.Jingle.Content content, string media) {
|
||
|
|
debug("[%s] %s on_connection_ready", call.account.bare_jid.to_string(), jid.to_string());
|
||
|
|
connection_ready();
|
||
|
|
|
||
|
|
if (call.state == Call.State.RINGING || call.state == Call.State.ESTABLISHING) {
|
||
|
|
call.state = Call.State.IN_PROGRESS;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (media == "audio") {
|
||
|
|
audio_encryptions = content.encryptions;
|
||
|
|
} else if (media == "video") {
|
||
|
|
video_encryptions = content.encryptions;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ((audio_encryptions != null && audio_encryptions.is_empty) || (video_encryptions != null && video_encryptions.is_empty)) {
|
||
|
|
call.encryption = Encryption.NONE;
|
||
|
|
encryption_updated(null, null, true);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
HashMap<string, Xep.Jingle.ContentEncryption> encryptions = audio_encryptions ?? video_encryptions;
|
||
|
|
|
||
|
|
Xep.Jingle.ContentEncryption? omemo_encryption = null, dtls_encryption = null, srtp_encryption = null;
|
||
|
|
foreach (string encr_name in encryptions.keys) {
|
||
|
|
if (video_encryptions != null && !video_encryptions.has_key(encr_name)) continue;
|
||
|
|
|
||
|
|
var encryption = encryptions[encr_name];
|
||
|
|
if (encryption.encryption_ns == "http://gultsch.de/xmpp/drafts/omemo/dlts-srtp-verification") {
|
||
|
|
omemo_encryption = encryption;
|
||
|
|
} else if (encryption.encryption_ns == Xep.JingleIceUdp.DTLS_NS_URI) {
|
||
|
|
dtls_encryption = encryption;
|
||
|
|
} else if (encryption.encryption_name == "SRTP") {
|
||
|
|
srtp_encryption = encryption;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (omemo_encryption != null && dtls_encryption != null) {
|
||
|
|
call.encryption = Encryption.OMEMO;
|
||
|
|
omemo_encryption.peer_key = dtls_encryption.peer_key;
|
||
|
|
omemo_encryption.our_key = dtls_encryption.our_key;
|
||
|
|
audio_encryption = omemo_encryption;
|
||
|
|
encryption_keys_same = true;
|
||
|
|
video_encryption = video_encryptions != null ? video_encryptions["http://gultsch.de/xmpp/drafts/omemo/dlts-srtp-verification"] : null;
|
||
|
|
} else if (dtls_encryption != null) {
|
||
|
|
call.encryption = Encryption.DTLS_SRTP;
|
||
|
|
audio_encryption = dtls_encryption;
|
||
|
|
video_encryption = video_encryptions != null ? video_encryptions[Xep.JingleIceUdp.DTLS_NS_URI] : null;
|
||
|
|
encryption_keys_same = true;
|
||
|
|
if (video_encryption != null && dtls_encryption.peer_key.length == video_encryption.peer_key.length) {
|
||
|
|
for (int i = 0; i < dtls_encryption.peer_key.length; i++) {
|
||
|
|
if (dtls_encryption.peer_key[i] != video_encryption.peer_key[i]) {
|
||
|
|
encryption_keys_same = false;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else if (srtp_encryption != null) {
|
||
|
|
call.encryption = Encryption.SRTP;
|
||
|
|
audio_encryption = srtp_encryption;
|
||
|
|
video_encryption = video_encryptions != null ? video_encryptions["SRTP"] : null;
|
||
|
|
encryption_keys_same = false;
|
||
|
|
} else {
|
||
|
|
call.encryption = Encryption.NONE;
|
||
|
|
encryption_keys_same = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
encryption_updated(audio_encryption, video_encryption, encryption_keys_same);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public class Dino.PeerInfo {
|
||
|
|
public bool audio_rtp_ready { get; set; }
|
||
|
|
public bool audio_rtcp_ready { get; set; }
|
||
|
|
public ulong? audio_bytes_sent { get; set; default=0; }
|
||
|
|
public ulong? audio_bytes_received { get; set; default=0; }
|
||
|
|
public string? audio_codec { get; set; }
|
||
|
|
public uint32 audio_clockrate { get; set; }
|
||
|
|
|
||
|
|
public bool video_content_exists { get; set; }
|
||
|
|
public bool video_rtp_ready { get; set; }
|
||
|
|
public bool video_rtcp_ready { get; set; }
|
||
|
|
public ulong? video_bytes_sent { get; set; default=0; }
|
||
|
|
public ulong? video_bytes_received { get; set; default=0; }
|
||
|
|
public string? video_codec { get; set; }
|
||
|
|
}
|