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-rw-r--r--libdino/src/service/call_peer_state.vala457
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diff --git a/libdino/src/service/call_peer_state.vala b/libdino/src/service/call_peer_state.vala
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+++ b/libdino/src/service/call_peer_state.vala
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+using Dino.Entities;
+using Gee;
+using Xmpp;
+
+public class Dino.PeerState : Object {
+ public signal void counterpart_sends_video_updated(bool mute);
+ public signal void info_received(Xep.JingleRtp.CallSessionInfo session_info);
+
+ public signal void connection_ready();
+ public signal void session_terminated(bool we_terminated, string? reason_name, string? reason_text);
+ public signal void encryption_updated(Xep.Jingle.ContentEncryption? audio_encryption, Xep.Jingle.ContentEncryption? video_encryption, bool same);
+
+ public StreamInteractor stream_interactor;
+ public Calls calls;
+ public Call call;
+ public Jid jid;
+ public Xep.Jingle.Session session;
+ public string sid;
+ public string internal_id = Xmpp.random_uuid();
+
+ public Xep.JingleRtp.Parameters? audio_content_parameter = null;
+ public Xep.JingleRtp.Parameters? video_content_parameter = null;
+ public Xep.Jingle.Content? audio_content = null;
+ public Xep.Jingle.Content? video_content = null;
+ public Xep.Jingle.ContentEncryption? video_encryption = null;
+ public Xep.Jingle.ContentEncryption? audio_encryption = null;
+ public bool encryption_keys_same = false;
+ public HashMap<string, Xep.Jingle.ContentEncryption>? video_encryptions = null;
+ public HashMap<string, Xep.Jingle.ContentEncryption>? audio_encryptions = null;
+
+ public bool first_peer = false;
+ public bool accepted_jmi = false;
+ public bool waiting_for_inbound_muji_connection = false;
+ public Xep.Muji.GroupCall? group_call { get; set; }
+
+ public bool counterpart_sends_video = false;
+ public bool we_should_send_audio { get; set; default=false; }
+ public bool we_should_send_video { get; set; default=false; }
+
+ public PeerState(Jid jid, Call call, StreamInteractor stream_interactor) {
+ this.jid = jid;
+ this.call = call;
+ this.stream_interactor = stream_interactor;
+ this.calls = stream_interactor.get_module(Calls.IDENTITY);
+
+ var session_info_type = stream_interactor.module_manager.get_module(call.account, Xep.JingleRtp.Module.IDENTITY).session_info_type;
+ session_info_type.mute_update_received.connect((session,mute, name) => {
+ if (this.sid != session.sid) return;
+
+ foreach (Xep.Jingle.Content content in session.contents) {
+ if (name == null || content.content_name == name) {
+ Xep.JingleRtp.Parameters? rtp_content_parameter = content.content_params as Xep.JingleRtp.Parameters;
+ if (rtp_content_parameter != null) {
+ on_counterpart_mute_update(mute, rtp_content_parameter.media);
+ }
+ }
+ }
+ });
+ session_info_type.info_received.connect((session, session_info) => {
+ if (this.sid != session.sid) return;
+
+ info_received(session_info);
+ });
+ }
+
+ public async void initiate_call(Jid counterpart) {
+ Gee.List<Jid> call_resources = yield calls.get_call_resources(call.account, counterpart);
+
+ bool do_jmi = false;
+ Jid? jid_for_direct = null;
+ if (yield calls.contains_jmi_resources(call.account, call_resources)) {
+ do_jmi = true;
+ } else if (!call_resources.is_empty) {
+ jid_for_direct = call_resources[0];
+ } else if (calls.has_jmi_resources(jid)) {
+ do_jmi = true;
+ }
+
+ sid = Xmpp.random_uuid();
+
+ if (do_jmi) {
+ XmppStream? stream = stream_interactor.get_stream(call.account);
+
+ calls.current_jmi_request_call[call.account] = calls.call_states[call];
+ calls.current_jmi_request_peer[call.account] = this;
+
+ var descriptions = new ArrayList<StanzaNode>();
+ descriptions.add(new StanzaNode.build("description", Xep.JingleRtp.NS_URI).add_self_xmlns().put_attribute("media", "audio"));
+ if (we_should_send_video) {
+ descriptions.add(new StanzaNode.build("description", Xep.JingleRtp.NS_URI).add_self_xmlns().put_attribute("media", "video"));
+ }
+
+ stream.get_module(Xmpp.Xep.JingleMessageInitiation.Module.IDENTITY).send_session_propose_to_peer(stream, jid, sid, descriptions);
+ } else if (jid_for_direct != null) {
+ yield call_resource(jid_for_direct);
+ }
+ }
+
+ public async void call_resource(Jid full_jid) {
+ XmppStream? stream = stream_interactor.get_stream(call.account);
+ if (stream == null) return;
+
+ if (sid == null) sid = Xmpp.random_uuid();
+
+ 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);
+ set_session(session);
+ }
+
+ public void accept() {
+ if (session != null) {
+ foreach (Xep.Jingle.Content content in session.contents) {
+ content.accept();
+ }
+ } else {
+ // Only a JMI so far
+ XmppStream stream = stream_interactor.get_stream(call.account);
+ if (stream == null) return;
+
+ accepted_jmi = true;
+
+ calls.current_jmi_request_call[call.account] = calls.call_states[call];
+ calls.current_jmi_request_peer[call.account] = this;
+
+ stream.get_module(Xep.JingleMessageInitiation.Module.IDENTITY).send_session_accept_to_self(stream, sid);
+ stream.get_module(Xep.JingleMessageInitiation.Module.IDENTITY).send_session_proceed_to_peer(stream, jid, sid);
+ }
+ }
+
+ public void reject() {
+ if (session != null) {
+ foreach (Xep.Jingle.Content content in session.contents) {
+ content.reject();
+ }
+ } else {
+ // Only a JMI so far
+ XmppStream stream = stream_interactor.get_stream(call.account);
+ if (stream == null) return;
+
+ stream.get_module(Xep.JingleMessageInitiation.Module.IDENTITY).send_session_reject_to_peer(stream, jid, sid);
+ stream.get_module(Xep.JingleMessageInitiation.Module.IDENTITY).send_session_reject_to_self(stream, sid);
+ }
+ }
+
+ public void end(string terminate_reason, string? reason_text = null) {
+ switch (terminate_reason) {
+ case Xep.Jingle.ReasonElement.SUCCESS:
+ if (session != null) {
+ session.terminate(terminate_reason, reason_text, "success");
+ }
+ break;
+ case Xep.Jingle.ReasonElement.CANCEL:
+ if (session != null) {
+ session.terminate(terminate_reason, reason_text, "cancel");
+ } else if (group_call != null) {
+ // We don't have to do anything (?)
+ } else {
+ // Only a JMI so far
+ XmppStream? stream = stream_interactor.get_stream(call.account);
+ if (stream == null) return;
+ stream.get_module(Xep.JingleMessageInitiation.Module.IDENTITY).send_session_retract_to_peer(stream, jid, sid);
+ }
+ break;
+ }
+ }
+
+ internal void mute_own_audio(bool mute) {
+ // Call isn't fully established yet. Audio will be muted once the stream is created.
+ if (session == null || audio_content_parameter == null || audio_content_parameter.stream == null) return;
+
+ Xep.JingleRtp.Stream stream = audio_content_parameter.stream;
+
+ // Inform our counterpart that we (un)muted our audio
+ stream_interactor.module_manager.get_module(call.account, Xep.JingleRtp.Module.IDENTITY).session_info_type.send_mute(session, mute, "audio");
+
+ // Start/Stop sending audio data
+ Application.get_default().plugin_registry.video_call_plugin.set_pause(stream, mute);
+ }
+
+ internal void mute_own_video(bool mute) {
+
+ if (session == null) {
+ // Call hasn't been established yet
+ return;
+ }
+
+ Xep.JingleRtp.Module rtp_module = stream_interactor.module_manager.get_module(call.account, Xep.JingleRtp.Module.IDENTITY);
+
+ if (video_content_parameter != null &&
+ video_content_parameter.stream != null &&
+ session.senders_include_us(video_content.senders)) {
+ // A video content already exists
+
+ // Start/Stop sending video data
+ Xep.JingleRtp.Stream stream = video_content_parameter.stream;
+ if (stream != null) {
+ Application.get_default().plugin_registry.video_call_plugin.set_pause(stream, mute);
+ }
+
+ // Inform our counterpart that we started/stopped our video
+ rtp_module.session_info_type.send_mute(session, mute, "video");
+ } else if (!mute) {
+ // Add a new video content
+ XmppStream stream = stream_interactor.get_stream(call.account);
+ rtp_module.add_outgoing_video_content.begin(stream, session, group_call != null ? group_call.muc_jid : null, (_, res) => {
+ if (video_content_parameter == null) {
+ Xep.Jingle.Content content = rtp_module.add_outgoing_video_content.end(res);
+ Xep.JingleRtp.Parameters? rtp_content_parameter = content.content_params as Xep.JingleRtp.Parameters;
+ if (rtp_content_parameter != null) {
+ connect_content_signals(content, rtp_content_parameter);
+ }
+ }
+ });
+ }
+ // 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.
+ }
+
+ public Xep.JingleRtp.Stream? get_video_stream(Call call) {
+ if (video_content_parameter != null) {
+ return video_content_parameter.stream;
+ }
+ return null;
+ }
+
+ public Xep.JingleRtp.Stream? get_audio_stream(Call call) {
+ if (audio_content_parameter != null) {
+ return audio_content_parameter.stream;
+ }
+ return null;
+ }
+
+ internal void set_session(Xep.Jingle.Session session) {
+ this.session = session;
+ this.sid = session.sid;
+
+ session.terminated.connect((stream, we_terminated, reason_name, reason_text) =>
+ session_terminated(we_terminated, reason_name, reason_text)
+ );
+ session.additional_content_add_incoming.connect((session,stream, content) =>
+ on_incoming_content_add(stream, session, content)
+ );
+
+ 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;
+
+ connect_content_signals(content, rtp_content_parameter);
+ }
+ }
+
+ public PeerInfo get_info() {
+ var ret = new PeerInfo();
+ if (audio_content != null || audio_content_parameter != null) {
+ ret.audio = get_content_info(audio_content, audio_content_parameter);
+ }
+ if (video_content != null || video_content_parameter != null) {
+ ret.video = get_content_info(video_content, video_content_parameter);
+ }
+ return ret;
+ }
+
+ private PeerContentInfo get_content_info(Xep.Jingle.Content? content, Xep.JingleRtp.Parameters? parameter) {
+ PeerContentInfo ret = new PeerContentInfo();
+ if (parameter != null) {
+ ret.rtcp_ready = parameter.rtcp_ready;
+ ret.rtp_ready = parameter.rtp_ready;
+
+ if (parameter.agreed_payload_type != null) {
+ ret.codec = parameter.agreed_payload_type.name;
+ ret.clockrate = parameter.agreed_payload_type.clockrate;
+ }
+ if (parameter.stream != null && parameter.stream.remb_enabled) {
+ ret.target_receive_bytes = parameter.stream.target_receive_bitrate;
+ ret.target_send_bytes = parameter.stream.target_send_bitrate;
+ }
+ }
+
+ if (content != null) {
+ Xmpp.Xep.Jingle.ComponentConnection? component0 = content.get_transport_connection(1);
+ if (component0 != null) {
+ ret.bytes_received = component0.bytes_received;
+ ret.bytes_sent = component0.bytes_sent;
+ }
+ }
+ return ret;
+ }
+
+
+
+ private void connect_content_signals(Xep.Jingle.Content content, Xep.JingleRtp.Parameters rtp_content_parameter) {
+ if (rtp_content_parameter.media == "audio") {
+ audio_content = content;
+ audio_content_parameter = rtp_content_parameter;
+ } else if (rtp_content_parameter.media == "video") {
+ video_content = content;
+ video_content_parameter = rtp_content_parameter;
+ }
+
+ debug(@"[%s] %s connecting content signals %s", call.account.bare_jid.to_string(), jid.to_string(), rtp_content_parameter.media);
+ rtp_content_parameter.stream_created.connect((stream) => on_stream_created(rtp_content_parameter.media, stream));
+ rtp_content_parameter.connection_ready.connect((status) => {
+ Idle.add(() => {
+ on_connection_ready(content, rtp_content_parameter.media);
+ return false;
+ });
+ });
+
+ content.senders_modify_incoming.connect((content, proposed_senders) => {
+ if (content.session.senders_include_us(content.senders) != content.session.senders_include_us(proposed_senders)) {
+ warning("counterpart set us to (not)sending %s. ignoring", content.content_name);
+ return;
+ }
+
+ if (!content.session.senders_include_counterpart(content.senders) && content.session.senders_include_counterpart(proposed_senders)) {
+ // Counterpart wants to start sending. Ok.
+ content.accept_content_modify(proposed_senders);
+ on_counterpart_mute_update(false, "video");
+ }
+ });
+ }
+
+ private void on_incoming_content_add(XmppStream stream, Xep.Jingle.Session session, Xep.Jingle.Content content) {
+ Xep.JingleRtp.Parameters? rtp_content_parameter = content.content_params as Xep.JingleRtp.Parameters;
+
+ if (rtp_content_parameter == null) {
+ content.reject();
+ return;
+ }
+
+ // Our peer shouldn't tell us to start sending, that's for us to initiate
+ if (session.senders_include_us(content.senders)) {
+ if (session.senders_include_counterpart(content.senders)) {
+ // If our peer wants to send, let them
+ 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) => {
+ Idle.add(() => {
+ counterpart_sends_video_updated(false);
+ return 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.PeerContentInfo {
+ public bool rtp_ready { get; set; }
+ public bool rtcp_ready { get; set; }
+ public ulong? bytes_sent { get; set; default=0; }
+ public ulong? bytes_received { get; set; default=0; }
+ public string? codec { get; set; }
+ public uint32 clockrate { get; set; }
+ public uint target_receive_bytes { get; set; default=-1; }
+ public uint target_send_bytes { get; set; default=-1; }
+}
+
+public class Dino.PeerInfo {
+ public PeerContentInfo? audio = null;
+ public PeerContentInfo? video = null;
+} \ No newline at end of file