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using Gee;
using Xmpp;
using Xmpp.Xep;
namespace Xmpp.Xep.JingleRtp {
public const string NS_URI = "urn:xmpp:jingle:apps:rtp:1";
public const string NS_URI_AUDIO = "urn:xmpp:jingle:apps:rtp:audio";
public const string NS_URI_VIDEO = "urn:xmpp:jingle:apps:rtp:video";
public abstract class Module : XmppStreamModule {
public static Xmpp.ModuleIdentity<Module> IDENTITY = new Xmpp.ModuleIdentity<Module>(NS_URI, "0167_jingle_rtp");
private ContentType content_type;
public SessionInfoType session_info_type = new SessionInfoType();
protected Module() {
content_type = new ContentType(this);
}
public abstract async Gee.List<PayloadType> get_supported_payloads(string media);
public abstract async PayloadType? pick_payload_type(string media, Gee.List<PayloadType> payloads);
public abstract Stream create_stream(Jingle.Content content);
public abstract void close_stream(Stream stream);
public async Jingle.Session start_call(XmppStream stream, Jid receiver_full_jid, bool video) throws Jingle.Error {
Jingle.Module jingle_module = stream.get_module(Jingle.Module.IDENTITY);
Jid? my_jid = stream.get_flag(Bind.Flag.IDENTITY).my_jid;
if (my_jid == null) {
throw new Jingle.Error.GENERAL("Couldn't determine own JID");
}
ArrayList<Jingle.Content> contents = new ArrayList<Jingle.Content>();
// Create audio content
Parameters audio_content_parameters = new Parameters(this, "audio", yield get_supported_payloads("audio"));
Jingle.Transport? audio_transport = yield jingle_module.select_transport(stream, content_type.required_transport_type, content_type.required_components, receiver_full_jid, Set.empty());
if (audio_transport == null) {
throw new Jingle.Error.NO_SHARED_PROTOCOLS("No suitable audio transports");
}
Jingle.TransportParameters audio_transport_params = audio_transport.create_transport_parameters(stream, content_type.required_components, my_jid, receiver_full_jid);
Jingle.Content audio_content = new Jingle.Content.initiate_sent("voice", Jingle.Senders.BOTH,
content_type, audio_content_parameters,
audio_transport, audio_transport_params,
null, null,
my_jid, receiver_full_jid);
contents.add(audio_content);
Jingle.Content? video_content = null;
if (video) {
// Create video content
Parameters video_content_parameters = new Parameters(this, "video", yield get_supported_payloads("video"));
Jingle.Transport? video_transport = yield stream.get_module(Jingle.Module.IDENTITY).select_transport(stream, content_type.required_transport_type, content_type.required_components, receiver_full_jid, Set.empty());
if (video_transport == null) {
throw new Jingle.Error.NO_SHARED_PROTOCOLS("No suitable video transports");
}
Jingle.TransportParameters video_transport_params = video_transport.create_transport_parameters(stream, content_type.required_components, my_jid, receiver_full_jid);
video_content = new Jingle.Content.initiate_sent("webcam", Jingle.Senders.BOTH,
content_type, video_content_parameters,
video_transport, video_transport_params,
null, null,
my_jid, receiver_full_jid);
contents.add(video_content);
}
// Create session
try {
Jingle.Session session = yield jingle_module.create_session(stream, contents, receiver_full_jid);
return session;
} catch (Jingle.Error e) {
throw new Jingle.Error.GENERAL(@"Couldn't create Jingle session: $(e.message)");
}
}
public async Jingle.Content add_outgoing_video_content(XmppStream stream, Jingle.Session session) {
Jid my_jid = session.local_full_jid;
Jid receiver_full_jid = session.peer_full_jid;
Jingle.Content? content = null;
foreach (Jingle.Content c in session.contents.values) {
Parameters? parameters = c.content_params as Parameters;
if (parameters == null) continue;
if (parameters.media == "video") {
content = c;
break;
}
}
if (content == null) {
// Content for video does not yet exist -> create it
Parameters video_content_parameters = new Parameters(this, "video", yield get_supported_payloads("video"));
Jingle.Transport? video_transport = yield stream.get_module(Jingle.Module.IDENTITY).select_transport(stream, content_type.required_transport_type, content_type.required_components, receiver_full_jid, Set.empty());
if (video_transport == null) {
throw new Jingle.Error.NO_SHARED_PROTOCOLS("No suitable video transports");
}
Jingle.TransportParameters video_transport_params = video_transport.create_transport_parameters(stream, content_type.required_components, my_jid, receiver_full_jid);
content = new Jingle.Content.initiate_sent("webcam",
session.we_initiated ? Jingle.Senders.INITIATOR : Jingle.Senders.RESPONDER,
content_type, video_content_parameters,
video_transport, video_transport_params,
null, null,
my_jid, receiver_full_jid);
session.add_content.begin(content);
} else {
// Content for video already exists -> modify senders
bool we_initiated = session.we_initiated;
Jingle.Senders want_sender = we_initiated ? Jingle.Senders.INITIATOR : Jingle.Senders.RESPONDER;
if (content.senders == Jingle.Senders.BOTH || content.senders == want_sender) {
warning("want to add video but senders is already both/target");
} else if (content.senders == Jingle.Senders.NONE) {
content.modify(want_sender);
} else {
content.modify(Jingle.Senders.BOTH);
}
}
return content;
}
public override void attach(XmppStream stream) {
stream.get_module(ServiceDiscovery.Module.IDENTITY).add_feature(stream, NS_URI);
stream.get_module(ServiceDiscovery.Module.IDENTITY).add_feature(stream, NS_URI_AUDIO);
stream.get_module(ServiceDiscovery.Module.IDENTITY).add_feature(stream, NS_URI_VIDEO);
stream.get_module(Jingle.Module.IDENTITY).register_content_type(content_type);
stream.get_module(Jingle.Module.IDENTITY).register_session_info_type(session_info_type);
}
public override void detach(XmppStream stream) {
stream.get_module(ServiceDiscovery.Module.IDENTITY).remove_feature(stream, NS_URI);
stream.get_module(ServiceDiscovery.Module.IDENTITY).remove_feature(stream, NS_URI_AUDIO);
stream.get_module(ServiceDiscovery.Module.IDENTITY).remove_feature(stream, NS_URI_VIDEO);
}
public async bool is_available(XmppStream stream, Jid full_jid) {
bool? has_feature = yield stream.get_module(ServiceDiscovery.Module.IDENTITY).has_entity_feature(stream, full_jid, NS_URI);
if (has_feature == null || !(!)has_feature) {
return false;
}
return yield stream.get_module(Jingle.Module.IDENTITY).is_available(stream, content_type.required_transport_type, content_type.required_components, full_jid);
}
public override string get_ns() { return NS_URI; }
public override string get_id() { return IDENTITY.id; }
}
public class Crypto {
public string cryptoSuite { get; private set; }
public string keyParams { get; private set; }
public string? sessionParams { get; private set; }
public string? tag { get; private set; }
public static Crypto parse(StanzaNode node) {
Crypto crypto = new Crypto();
crypto.cryptoSuite = node.get_attribute("crypto-suite");
crypto.keyParams = node.get_attribute("key-params");
crypto.sessionParams = node.get_attribute("session-params");
crypto.tag = node.get_attribute("tag");
return crypto;
}
public StanzaNode to_xml() {
StanzaNode node = new StanzaNode.build("crypto", NS_URI)
.put_attribute("crypto-suite", cryptoSuite)
.put_attribute("key-params", keyParams);
if (sessionParams != null) node.put_attribute("session-params", sessionParams);
if (tag != null) node.put_attribute("tag", tag);
return node;
}
}
}
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