76 lines
2.9 KiB
Vala
76 lines
2.9 KiB
Vala
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using Xmpp;
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using Xmpp.Xep;
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namespace Xmpp.Xep.JingleInBandBytestreams {
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private const string NS_URI = "urn:xmpp:jingle:transports:ibb:1";
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private const int DEFAULT_BLOCKSIZE = 4096;
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public class Module : Jingle.Transport, XmppStreamModule {
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public static Xmpp.ModuleIdentity<Module> IDENTITY = new Xmpp.ModuleIdentity<Module>(NS_URI, "0261_jingle_in_band_bytestreams");
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public override void attach(XmppStream stream) {
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stream.get_module(Jingle.Module.IDENTITY).add_transport(stream, this);
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stream.get_module(ServiceDiscovery.Module.IDENTITY).add_feature(stream, NS_URI);
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}
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public override void detach(XmppStream stream) { }
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public override string get_ns() { return NS_URI; }
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public override string get_id() { return IDENTITY.id; }
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public bool is_transport_available(XmppStream stream, Jid full_jid) {
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bool? result = stream.get_flag(ServiceDiscovery.Flag.IDENTITY).has_entity_feature(full_jid, NS_URI);
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return result != null && result;
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}
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public Jingle.TransportType transport_type() {
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return Jingle.TransportType.STREAMING;
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}
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public StanzaNode to_transport_stanza_node() {
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return new StanzaNode.build("transport", NS_URI)
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.add_self_xmlns()
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.put_attribute("block-size", DEFAULT_BLOCKSIZE.to_string())
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.put_attribute("sid", random_uuid());
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}
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public Jingle.Connection? create_transport_connection(XmppStream stream, Jid peer_full_jid, StanzaNode content) throws Jingle.CreateConnectionError {
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StanzaNode? transport = content.get_subnode("transport", NS_URI);
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if (transport == null) {
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return null;
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}
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string? sid = transport.get_attribute("sid");
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int block_size = transport.get_attribute_int("block-size");
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if (sid == null || block_size <= 0) {
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throw new Jingle.CreateConnectionError.BAD_REQUEST("Invalid IBB parameters");
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}
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if (block_size > DEFAULT_BLOCKSIZE) {
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throw new Jingle.CreateConnectionError.NOT_ACCEPTABLE("Invalid IBB parameters: peer increased block size");
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}
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return new Connection(peer_full_jid, new InBandBytestreams.Connection(peer_full_jid, sid, block_size));
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}
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}
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public class Connection : Jingle.Connection {
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InBandBytestreams.Connection inner;
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public Connection(Jid full_jid, InBandBytestreams.Connection inner) {
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base(full_jid);
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inner.on_error.connect((stream, error) => on_error(stream, new Jingle.Error.TRANSPORT_ERROR(error)));
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inner.on_data.connect((stream, data) => on_data(stream, data));
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inner.on_ready.connect((stream) => on_ready(stream));
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this.inner = inner;
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}
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public override void connect(XmppStream stream) {
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inner.connect(stream);
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}
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public override void send(XmppStream stream, uint8[] data) {
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inner.send(stream, data);
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}
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public override void close(XmppStream stream) {
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inner.close(stream);
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}
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}
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}
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