aboutsummaryrefslogtreecommitdiff
path: root/xmpp-vala/src/module
diff options
context:
space:
mode:
Diffstat (limited to 'xmpp-vala/src/module')
-rw-r--r--xmpp-vala/src/module/message/stanza.vala4
-rw-r--r--xmpp-vala/src/module/stanza_error.vala7
-rw-r--r--xmpp-vala/src/module/xep/0047_in_band_bytestreams.vala468
-rw-r--r--xmpp-vala/src/module/xep/0048_bookmarks/conference.vala4
-rw-r--r--xmpp-vala/src/module/xep/0166_jingle.vala494
-rw-r--r--xmpp-vala/src/module/xep/0234_jingle_file_transfer.vala130
-rw-r--r--xmpp-vala/src/module/xep/0261_jingle_in_band_bytestreams.vala77
7 files changed, 1178 insertions, 6 deletions
diff --git a/xmpp-vala/src/module/message/stanza.vala b/xmpp-vala/src/module/message/stanza.vala
index 640f2796..053c44dd 100644
--- a/xmpp-vala/src/module/message/stanza.vala
+++ b/xmpp-vala/src/module/message/stanza.vala
@@ -18,7 +18,7 @@ public class MessageStanza : Xmpp.Stanza {
public string body {
get {
StanzaNode? body_node = stanza.get_subnode(NODE_BODY);
- return body_node == null? null : body_node.get_string_content();
+ return body_node == null ? null : body_node.get_string_content();
}
set {
StanzaNode? body_node = stanza.get_subnode(NODE_BODY);
@@ -65,4 +65,4 @@ public abstract class MessageFlag : Object {
public abstract string get_id();
}
-} \ No newline at end of file
+}
diff --git a/xmpp-vala/src/module/stanza_error.vala b/xmpp-vala/src/module/stanza_error.vala
index 651e8d2b..c108b02a 100644
--- a/xmpp-vala/src/module/stanza_error.vala
+++ b/xmpp-vala/src/module/stanza_error.vala
@@ -82,8 +82,8 @@ namespace Xmpp {
public ErrorStanza.bad_request(string? human_readable = null) {
this.build(TYPE_MODIFY, CONDITION_BAD_REQUEST, human_readable, null);
}
- public ErrorStanza.feature_not_implemented(StanzaNode? application_condition = null) {
- this.build(TYPE_MODIFY, CONDITION_FEATURE_NOT_IMPLEMENTED, null, application_condition);
+ public ErrorStanza.feature_not_implemented(string? human_readable = null) {
+ this.build(TYPE_MODIFY, CONDITION_FEATURE_NOT_IMPLEMENTED, human_readable, null);
}
public ErrorStanza.item_not_found(StanzaNode? application_condition = null) {
this.build(TYPE_CANCEL, CONDITION_ITEM_NOT_FOUND, null, application_condition);
@@ -91,6 +91,9 @@ namespace Xmpp {
public ErrorStanza.not_acceptable(string? human_readable = null) {
this.build(TYPE_MODIFY, CONDITION_NOT_ACCEPTABLE, human_readable, null);
}
+ public ErrorStanza.not_allowed(string? human_readable = null) {
+ this.build(TYPE_CANCEL, CONDITION_NOT_ALLOWED, human_readable, null);
+ }
public ErrorStanza.service_unavailable() {
this.build(TYPE_CANCEL, CONDITION_SERVICE_UNAVAILABLE, null, null);
}
diff --git a/xmpp-vala/src/module/xep/0047_in_band_bytestreams.vala b/xmpp-vala/src/module/xep/0047_in_band_bytestreams.vala
new file mode 100644
index 00000000..89247780
--- /dev/null
+++ b/xmpp-vala/src/module/xep/0047_in_band_bytestreams.vala
@@ -0,0 +1,468 @@
+using Gee;
+using Xmpp;
+using Xmpp.Xep;
+
+namespace Xmpp.Xep.InBandBytestreams {
+
+private const string NS_URI = "http://jabber.org/protocol/ibb";
+private const int SEQ_MODULUS = 65536;
+
+public class Module : XmppStreamModule, Iq.Handler {
+ public static Xmpp.ModuleIdentity<Module> IDENTITY = new Xmpp.ModuleIdentity<Module>(NS_URI, "0047_in_band_bytestreams");
+
+ public override void attach(XmppStream stream) {
+ stream.add_flag(new Flag());
+ stream.get_module(Iq.Module.IDENTITY).register_for_namespace(NS_URI, this);
+ }
+ public override void detach(XmppStream stream) { }
+
+ public void on_iq_set(XmppStream stream, Iq.Stanza iq) {
+ // the iq module ensures that there's only one child node
+ StanzaNode? node = null;
+ node = (node != null) ? node : iq.stanza.get_subnode("open", NS_URI);
+ node = (node != null) ? node : iq.stanza.get_subnode("data", NS_URI);
+ node = (node != null) ? node : iq.stanza.get_subnode("close", NS_URI);
+ if (node == null) {
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.error(iq, new ErrorStanza.bad_request("unknown IBB action")));
+ return;
+ }
+ string? sid = node.get_attribute("sid");
+ if (sid == null) {
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.error(iq, new ErrorStanza.bad_request("missing sid")));
+ return;
+ }
+ Connection? conn = stream.get_flag(Flag.IDENTITY).get_connection(sid);
+ if (node.name == "open") {
+ if (conn == null) {
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.error(iq, new ErrorStanza.not_acceptable("unexpected IBB connection")));
+ return;
+ }
+ if (conn.state != WAITING_FOR_CONNECT) {
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.error(iq, new ErrorStanza.bad_request("IBB open for already open connection")));
+ return;
+ }
+ conn.handle_open(stream, node, iq);
+ } else {
+ if (conn == null || conn.state != Connection.State.CONNECTED) {
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.error(iq, new ErrorStanza.item_not_found()));
+ return;
+ }
+ if (node.name == "close") {
+ conn.handle_close(stream, node, iq);
+ } else {
+ conn.handle_data(stream, node, iq);
+ }
+ }
+ }
+
+ public override string get_ns() { return NS_URI; }
+ public override string get_id() { return IDENTITY.id; }
+}
+
+public class Connection : IOStream {
+ // TODO(hrxi): Fix reference cycle
+ public class Input : InputStream {
+ private Connection connection;
+ public Input(Connection connection) {
+ this.connection = connection;
+ }
+ public override ssize_t read(uint8[] buffer, Cancellable? cancellable = null) throws IOError {
+ throw new IOError.NOT_SUPPORTED("can't do non-async reads on in-band bytestreams");
+ }
+ public override async ssize_t read_async(uint8[]? buffer, int io_priority = GLib.Priority.DEFAULT, Cancellable? cancellable = null) throws IOError {
+ return yield connection.read_async(buffer, io_priority, cancellable);
+ }
+ public override bool close(Cancellable? cancellable = null) throws IOError {
+ return connection.close_read(cancellable);
+ }
+ public override async bool close_async(int io_priority = GLib.Priority.DEFAULT, Cancellable? cancellable = null) throws IOError {
+ return yield connection.close_read_async(io_priority, cancellable);
+ }
+ }
+ public class Output : OutputStream {
+ private Connection connection;
+ public Output(Connection connection) {
+ this.connection = connection;
+ }
+ public override ssize_t write(uint8[] buffer, Cancellable? cancellable = null) throws IOError {
+ throw new IOError.NOT_SUPPORTED("can't do non-async writes on in-band bytestreams");
+ }
+ public override async ssize_t write_async(uint8[]? buffer, int io_priority = GLib.Priority.DEFAULT, Cancellable? cancellable = null) throws IOError {
+ return yield connection.write_async(buffer, io_priority, cancellable);
+ }
+ public override bool close(Cancellable? cancellable = null) throws IOError {
+ return connection.close_write(cancellable);
+ }
+ public override async bool close_async(int io_priority = GLib.Priority.DEFAULT, Cancellable? cancellable = null) throws IOError {
+ return yield connection.close_write_async(io_priority, cancellable);
+ }
+ }
+
+ private Input input;
+ private Output output;
+ public override InputStream input_stream { get { return input; } }
+ public override OutputStream output_stream { get { return output; } }
+
+ public enum State {
+ WAITING_FOR_CONNECT,
+ CONNECTING,
+ CONNECTED,
+ DISCONNECTING,
+ DISCONNECTED,
+ ERROR,
+ }
+ public State state { get; private set; }
+ Jid receiver_full_jid;
+ public string sid { get; private set; }
+ int block_size;
+ int local_seq = 0;
+ int remote_ack = 0;
+ internal int remote_seq = 0;
+
+ bool input_closed = false;
+ bool output_closed = false;
+
+ // ERROR
+ string? error = null;
+
+ XmppStream stream;
+
+ int read_callback_priority;
+ Cancellable? read_callback_cancellable = null;
+ ulong read_callback_cancellable_id;
+ SourceFunc? read_callback = null;
+ int write_callback_priority;
+ SourceFunc? write_callback = null;
+ ulong write_callback_cancellable_id;
+ Cancellable? write_callback_cancellable = null;
+ // Need `Bytes` instead of `uint8[]` because the latter doesn't work in
+ // parameter position of `LinkedList`.
+ LinkedList<Bytes> received = new LinkedList<Bytes>();
+
+ private Connection(XmppStream stream, Jid receiver_full_jid, string sid, int block_size, bool initiate) {
+ this.stream = stream;
+ this.receiver_full_jid = receiver_full_jid;
+ this.sid = sid;
+ this.block_size = block_size;
+ this.state = initiate ? State.CONNECTING : State.WAITING_FOR_CONNECT;
+
+ input = new Input(this);
+ output = new Output(this);
+ }
+
+ public void set_read_callback(SourceFunc callback, Cancellable? cancellable, int io_priority) throws IOError {
+ if (read_callback != null) {
+ throw new IOError.PENDING("only one async read is permitted at a time on an in-band bytestream");
+ }
+ if (cancellable != null) {
+ read_callback_cancellable_id = cancellable.connect(trigger_read_callback);
+ }
+ read_callback = callback;
+ read_callback_cancellable = cancellable;
+ read_callback_priority = io_priority;
+ }
+ public void set_write_callback(SourceFunc callback, Cancellable? cancellable, int io_priority) throws IOError {
+ if (write_callback != null) {
+ throw new IOError.PENDING("only one async write is permitted at a time on an in-band bytestream");
+ }
+ if (cancellable != null) {
+ write_callback_cancellable_id = cancellable.connect(trigger_write_callback);
+ }
+ write_callback = callback;
+ write_callback_cancellable = cancellable;
+ write_callback_priority = io_priority;
+ }
+ public void trigger_read_callback() {
+ if (read_callback != null) {
+ Idle.add((owned) read_callback, read_callback_priority);
+ read_callback = null;
+ if (read_callback_cancellable != null) {
+ read_callback_cancellable.disconnect(read_callback_cancellable_id);
+ }
+ read_callback_cancellable = null;
+ }
+ }
+ public void trigger_write_callback() {
+ if (write_callback != null) {
+ Idle.add((owned) write_callback, write_callback_priority);
+ write_callback = null;
+ if (write_callback_cancellable != null) {
+ write_callback_cancellable.disconnect(write_callback_cancellable_id);
+ }
+ write_callback_cancellable = null;
+ }
+ }
+
+ public async ssize_t read_async(uint8[]? buffer, int io_priority = GLib.Priority.DEFAULT, Cancellable? cancellable = null) throws IOError {
+ while (true) {
+ if (cancellable != null) {
+ cancellable.set_error_if_cancelled();
+ }
+ if (input_closed) {
+ return 0;
+ }
+ Bytes? chunk = received.poll();
+ if (chunk != null) {
+ int read = int.min(buffer.length, chunk.length);
+ for (int i = 0; i < read; i++) {
+ buffer[i] = chunk[i];
+ }
+ if (buffer.length < chunk.length) {
+ received.offer_head(chunk[buffer.length:chunk.length]);
+ }
+ return read;
+ }
+ if (state == DISCONNECTED) {
+ return 0;
+ }
+ set_read_callback(read_async.callback, cancellable, io_priority);
+ yield;
+ }
+ }
+
+ public async ssize_t write_async(uint8[]? buffer, int io_priority = GLib.Priority.DEFAULT, Cancellable? cancellable = null) throws IOError {
+ while (state == WAITING_FOR_CONNECT || state == CONNECTING) {
+ if (cancellable != null) {
+ cancellable.set_error_if_cancelled();
+ }
+ set_write_callback(write_async.callback, cancellable, io_priority);
+ yield;
+ }
+ throw_if_closed();
+ assert(state == CONNECTED);
+ // TODO(hrxi): merging?
+ int seq = local_seq;
+ local_seq = (local_seq + 1) % SEQ_MODULUS;
+ if (buffer.length > block_size) {
+ buffer = buffer[0:block_size];
+ }
+ StanzaNode data = new StanzaNode.build("data", NS_URI)
+ .add_self_xmlns()
+ .put_attribute("sid", sid)
+ .put_attribute("seq", seq.to_string())
+ .put_node(new StanzaNode.text(Base64.encode(buffer)));
+ Iq.Stanza iq = new Iq.Stanza.set(data) { to=receiver_full_jid };
+ set_write_callback(write_async.callback, cancellable, io_priority);
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, iq, (stream, iq) => {
+ if (iq.is_error()) {
+ set_error("sending failed");
+ } else if (remote_ack != seq) {
+ set_error("out of order acks");
+ } else {
+ remote_ack = (remote_ack + 1) % SEQ_MODULUS;
+ if (local_seq == remote_ack) {
+ trigger_write_callback();
+ }
+ }
+ });
+ yield;
+ if (cancellable != null) {
+ cancellable.set_error_if_cancelled();
+ }
+ throw_if_error();
+ return buffer.length;
+ }
+
+ public bool close_read(Cancellable? cancellable = null) {
+ input_closed = true;
+ if (!output_closed) {
+ return true;
+ }
+ return close_impl(cancellable);
+ }
+ public async bool close_read_async(int io_priority = GLib.Priority.DEFAULT, Cancellable? cancellable = null) throws IOError {
+ input_closed = true;
+ if (!output_closed) {
+ return true;
+ }
+ return yield close_async_impl(io_priority, cancellable);
+ }
+ public bool close_write(Cancellable? cancellable = null) {
+ output_closed = true;
+ if (!input_closed) {
+ return true;
+ }
+ return close_impl(cancellable);
+ }
+ public async bool close_write_async(int io_priority = GLib.Priority.DEFAULT, Cancellable? cancellable = null) throws IOError {
+ output_closed = true;
+ if (!input_closed) {
+ return true;
+ }
+ return yield close_async_impl(io_priority, cancellable);
+ }
+ delegate void OnClose(bool success);
+ private bool close_impl(Cancellable? cancellable = null, OnClose? on_close = null) {
+ if (state == DISCONNECTING || state == DISCONNECTED || state == ERROR) {
+ on_close(true);
+ return true;
+ }
+ if (state == WAITING_FOR_CONNECT) {
+ state = DISCONNECTED;
+ stream.get_flag(Flag.IDENTITY).remove_connection(this);
+ trigger_read_callback();
+ on_close(true);
+ return true;
+ }
+ state = DISCONNECTING;
+ StanzaNode close = new StanzaNode.build("close", NS_URI)
+ .add_self_xmlns()
+ .put_attribute("sid", sid);
+ Iq.Stanza iq = new Iq.Stanza.set(close) { to=receiver_full_jid };
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, iq, (stream, iq) => {
+ assert(state == DISCONNECTING);
+ if (iq.is_error()) {
+ set_error("disconnecting failed");
+ } else {
+ state = DISCONNECTED;
+ }
+ stream.get_flag(Flag.IDENTITY).remove_connection(this);
+ trigger_read_callback();
+ on_close(!iq.is_error());
+ });
+ return true;
+ }
+ private async bool close_async_impl(int io_priority = GLib.Priority.DEFAULT, Cancellable? cancellable = null) throws IOError {
+ SourceFunc callback = close_async_impl.callback;
+ close_impl(cancellable, () => { Idle.add((owned) callback); });
+ yield;
+ throw_if_error();
+ return true;
+ }
+
+ public static Connection create(XmppStream stream, Jid receiver_full_jid, string sid, int block_size, bool initiate) {
+ Connection conn = new Connection(stream, receiver_full_jid, sid, block_size, initiate);
+ if (initiate) {
+ StanzaNode open = new StanzaNode.build("open", NS_URI)
+ .add_self_xmlns()
+ .put_attribute("block-size", block_size.to_string())
+ .put_attribute("sid", sid);
+
+ Iq.Stanza iq = new Iq.Stanza.set(open) { to=receiver_full_jid };
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, iq, (stream, iq) => {
+ if (conn.state != CONNECTING) {
+ assert(conn.state != CONNECTED);
+ return;
+ }
+ if (!iq.is_error()) {
+ conn.state = CONNECTED;
+ stream.get_flag(Flag.IDENTITY).add_connection(conn);
+ conn.trigger_write_callback();
+ } else {
+ conn.set_error("connection failed");
+ }
+ });
+ } else {
+ stream.get_flag(Flag.IDENTITY).add_connection(conn);
+ }
+ return conn;
+ }
+
+ void throw_if_error() throws IOError {
+ if (state == ERROR) {
+ throw new IOError.FAILED(error);
+ }
+ }
+
+ void throw_if_closed() throws IOError {
+ throw_if_error();
+ if (state == DISCONNECTING || state == DISCONNECTED) {
+ throw new IOError.CLOSED("can't read/write on a closed connection");
+ }
+ }
+
+ void set_error(string error) {
+ if (state != WAITING_FOR_CONNECT && state != DISCONNECTING && state != DISCONNECTED && state != ERROR) {
+ close_async.begin();
+ }
+ state = ERROR;
+ this.error = error;
+ stream.get_flag(Flag.IDENTITY).remove_connection(this);
+ }
+
+ public void handle_open(XmppStream stream, StanzaNode open, Iq.Stanza iq) {
+ assert(state == WAITING_FOR_CONNECT);
+ int block_size = open.get_attribute_int("block-size");
+ string? stanza = open.get_attribute("stanza");
+ if (block_size < 0 || (stanza != null && stanza != "iq" && stanza != "message")) {
+ set_error("invalid open");
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.error(iq, new ErrorStanza.bad_request("missing block_size or invalid stanza")));
+ return;
+ }
+ if (stanza != null && stanza != "iq") {
+ set_error("invalid open");
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.error(iq, new ErrorStanza.feature_not_implemented("cannot use message stanzas for IBB")));
+ return;
+ }
+ if (block_size > this.block_size) {
+ set_error("invalid open");
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.error(iq, new ErrorStanza.build(ErrorStanza.TYPE_CANCEL, ErrorStanza.CONDITION_RESOURCE_CONSTRAINT, "opening a connection with a greater than negotiated/acceptable block size", null)));
+ return;
+ }
+ this.block_size = block_size;
+ state = CONNECTED;
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.result(iq));
+ trigger_write_callback();
+ }
+ public void handle_data(XmppStream stream, StanzaNode data, Iq.Stanza iq) {
+ assert(state == CONNECTED);
+ if (input_closed) {
+ set_error("unexpected data");
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.error(iq, new ErrorStanza.not_allowed("unexpected data")));
+ return;
+ }
+ int seq = data.get_attribute_int("seq");
+ // TODO(hrxi): return an error on malformed base64 (need to do this
+ // according to the xep)
+ uint8[] content = Base64.decode(data.get_string_content());
+ if (content.length > block_size) {
+ set_error("data longer than negotiated block size");
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.error(iq, new ErrorStanza.bad_request("data longer than negotiated block size")));
+ return;
+ }
+ if (seq < 0 || seq != remote_seq) {
+ set_error("out of order data packets");
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.error(iq, new ErrorStanza.build(ErrorStanza.TYPE_CANCEL, ErrorStanza.CONDITION_UNEXPECTED_REQUEST, "out of order data packets", null)));
+ return;
+ }
+ remote_seq = (remote_seq + 1) % SEQ_MODULUS;
+
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.result(iq));
+ if (content.length != 0) {
+ received.offer(new Bytes.take(content));
+ trigger_read_callback();
+ }
+ }
+ public void handle_close(XmppStream stream, StanzaNode close, Iq.Stanza iq) {
+ assert(state == CONNECTED);
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.result(iq));
+ stream.get_flag(Flag.IDENTITY).remove_connection(this);
+ input_closed = true;
+ output_closed = true;
+ state = DISCONNECTED;
+
+ trigger_read_callback();
+ }
+}
+
+
+public class Flag : XmppStreamFlag {
+ public static FlagIdentity<Flag> IDENTITY = new FlagIdentity<Flag>(NS_URI, "in_band_bytestreams");
+
+ private HashMap<string, Connection> active = new HashMap<string, Connection>();
+
+ public void add_connection(Connection conn) {
+ active[conn.sid] = conn;
+ }
+ public Connection? get_connection(string sid) {
+ return active.has_key(sid) ? active[sid] : null;
+ }
+ public void remove_connection(Connection conn) {
+ active.unset(conn.sid);
+ }
+
+ public override string get_ns() { return NS_URI; }
+ public override string get_id() { return IDENTITY.id; }
+}
+
+}
diff --git a/xmpp-vala/src/module/xep/0048_bookmarks/conference.vala b/xmpp-vala/src/module/xep/0048_bookmarks/conference.vala
index c00d8f86..7f80490b 100644
--- a/xmpp-vala/src/module/xep/0048_bookmarks/conference.vala
+++ b/xmpp-vala/src/module/xep/0048_bookmarks/conference.vala
@@ -36,7 +36,7 @@ public class Conference : Object {
public string? nick {
get {
StanzaNode? nick_node = stanza_node.get_subnode(NODE_NICK);
- return nick_node == null? null : nick_node.get_string_content();
+ return nick_node == null ? null : nick_node.get_string_content();
}
set {
StanzaNode? nick_node = stanza_node.get_subnode(NODE_NICK);
@@ -56,7 +56,7 @@ public class Conference : Object {
public string? password {
get {
StanzaNode? password_node = stanza_node.get_subnode(NODE_PASSWORD);
- return password_node == null? null : password_node.get_string_content();
+ return password_node == null ? null : password_node.get_string_content();
}
set {
StanzaNode? password_node = stanza_node.get_subnode(NODE_PASSWORD);
diff --git a/xmpp-vala/src/module/xep/0166_jingle.vala b/xmpp-vala/src/module/xep/0166_jingle.vala
new file mode 100644
index 00000000..7413ff4f
--- /dev/null
+++ b/xmpp-vala/src/module/xep/0166_jingle.vala
@@ -0,0 +1,494 @@
+using Gee;
+using Xmpp.Xep;
+using Xmpp;
+
+namespace Xmpp.Xep.Jingle {
+
+private const string NS_URI = "urn:xmpp:jingle:1";
+private const string ERROR_NS_URI = "urn:xmpp:jingle:errors:1";
+
+public errordomain IqError {
+ BAD_REQUEST,
+ NOT_ACCEPTABLE,
+ NOT_IMPLEMENTED,
+ OUT_OF_ORDER,
+}
+
+void send_iq_error(IqError iq_error, XmppStream stream, Iq.Stanza iq) {
+ ErrorStanza error;
+ if (iq_error is IqError.BAD_REQUEST) {
+ error = new ErrorStanza.bad_request(iq_error.message);
+ } else if (iq_error is IqError.NOT_ACCEPTABLE) {
+ error = new ErrorStanza.not_acceptable(iq_error.message);
+ } else if (iq_error is IqError.NOT_IMPLEMENTED) {
+ error = new ErrorStanza.feature_not_implemented(iq_error.message);
+ } else if (iq_error is IqError.OUT_OF_ORDER) {
+ StanzaNode out_of_order = new StanzaNode.build("out-of-order", ERROR_NS_URI).add_self_xmlns();
+ error = new ErrorStanza.build(ErrorStanza.TYPE_MODIFY, ErrorStanza.CONDITION_UNEXPECTED_REQUEST, iq_error.message, out_of_order);
+ } else {
+ assert_not_reached();
+ }
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.error(iq, error));
+}
+
+public errordomain Error {
+ GENERAL,
+ BAD_REQUEST,
+ INVALID_PARAMETERS,
+ UNSUPPORTED_TRANSPORT,
+ NO_SHARED_PROTOCOLS,
+ TRANSPORT_ERROR,
+}
+
+StanzaNode get_single_node_anyns(StanzaNode parent, string node_name) throws IqError {
+ StanzaNode? result = null;
+ foreach (StanzaNode child in parent.get_all_subnodes()) {
+ if (child.name == node_name) {
+ if (result != null) {
+ throw new IqError.BAD_REQUEST(@"multiple $(node_name) nodes");
+ }
+ result = child;
+ }
+ }
+ if (result == null) {
+ throw new IqError.BAD_REQUEST(@"missing $(node_name) node");
+ }
+ return result;
+}
+
+public class Module : XmppStreamModule, Iq.Handler {
+ public static Xmpp.ModuleIdentity<Module> IDENTITY = new Xmpp.ModuleIdentity<Module>(NS_URI, "0166_jingle");
+
+ private HashMap<string, ContentType> content_types = new HashMap<string, ContentType>();
+ private HashMap<string, Transport> transports = new HashMap<string, Transport>();
+
+ public override void attach(XmppStream stream) {
+ stream.add_flag(new Flag());
+ stream.get_module(ServiceDiscovery.Module.IDENTITY).add_feature(stream, NS_URI);
+ stream.get_module(Iq.Module.IDENTITY).register_for_namespace(NS_URI, this);
+ }
+ public override void detach(XmppStream stream) { }
+
+ public void register_content_type(ContentType content_type) {
+ content_types[content_type.content_type_ns_uri()] = content_type;
+ }
+ public ContentType? get_content_type(string ns_uri) {
+ if (!content_types.has_key(ns_uri)) {
+ return null;
+ }
+ return content_types[ns_uri];
+ }
+ public void register_transport(Transport transport) {
+ transports[transport.transport_ns_uri()] = transport;
+ }
+ public Transport? get_transport(string ns_uri) {
+ if (!transports.has_key(ns_uri)) {
+ return null;
+ }
+ return transports[ns_uri];
+ }
+ public Transport? select_transport(XmppStream stream, TransportType type, Jid receiver_full_jid) {
+ foreach (Transport transport in transports.values) {
+ if (transport.transport_type() != type) {
+ continue;
+ }
+ // TODO(hrxi): prioritization
+ if (transport.is_transport_available(stream, receiver_full_jid)) {
+ return transport;
+ }
+ }
+ return null;
+ }
+
+ private bool is_jingle_available(XmppStream stream, Jid full_jid) {
+ bool? has_jingle = stream.get_flag(ServiceDiscovery.Flag.IDENTITY).has_entity_feature(full_jid, NS_URI);
+ return has_jingle != null && has_jingle;
+ }
+
+ public bool is_available(XmppStream stream, TransportType type, Jid full_jid) {
+ return is_jingle_available(stream, full_jid) && select_transport(stream, type, full_jid) != null;
+ }
+
+ public Session create_session(XmppStream stream, TransportType type, Jid receiver_full_jid, Senders senders, string content_name, StanzaNode description) throws Error {
+ if (!is_jingle_available(stream, receiver_full_jid)) {
+ throw new Error.NO_SHARED_PROTOCOLS("No Jingle support");
+ }
+ Transport? transport = select_transport(stream, type, receiver_full_jid);
+ if (transport == null) {
+ throw new Error.NO_SHARED_PROTOCOLS("No suitable transports");
+ }
+ Jid? my_jid = stream.get_flag(Bind.Flag.IDENTITY).my_jid;
+ if (my_jid == null) {
+ throw new Error.GENERAL("Couldn't determine own JID");
+ }
+ TransportParameters transport_params = transport.create_transport_parameters();
+ Session session = new Session.initiate_sent(random_uuid(), type, transport_params, receiver_full_jid, content_name);
+ StanzaNode content = new StanzaNode.build("content", NS_URI)
+ .put_attribute("creator", "initiator")
+ .put_attribute("name", content_name)
+ .put_attribute("senders", senders.to_string())
+ .put_node(description)
+ .put_node(transport_params.to_transport_stanza_node());
+ StanzaNode jingle = new StanzaNode.build("jingle", NS_URI)
+ .add_self_xmlns()
+ .put_attribute("action", "session-initiate")
+ .put_attribute("initiator", my_jid.to_string())
+ .put_attribute("sid", session.sid)
+ .put_node(content);
+ Iq.Stanza iq = new Iq.Stanza.set(jingle) { to=receiver_full_jid };
+
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, iq, (stream, iq) => {
+ // TODO(hrxi): handle errors
+ stream.get_flag(Flag.IDENTITY).add_session(session);
+ });
+
+ return session;
+ }
+
+ public void handle_session_initiate(XmppStream stream, string sid, StanzaNode jingle, Iq.Stanza iq) throws IqError {
+ Gee.List<StanzaNode> contents = jingle.get_subnodes("content");
+ if (contents.size == 0) {
+ throw new IqError.BAD_REQUEST("missing content node");
+ }
+ if (contents.size > 1) {
+ throw new IqError.NOT_IMPLEMENTED("can't process multiple content nodes");
+ }
+ StanzaNode content = contents[0];
+ string? name = content.get_attribute("name");
+ StanzaNode description = get_single_node_anyns(content, "description");
+ StanzaNode transport_node = get_single_node_anyns(content, "transport");
+ if (name == null) {
+ throw new IqError.BAD_REQUEST("missing name");
+ }
+
+ Transport? transport = get_transport(transport_node.ns_uri);
+ TransportParameters? transport_params = null;
+ if (transport != null) {
+ transport_params = transport.parse_transport_parameters(transport_node);
+ } else {
+ // terminate the session below
+ }
+
+ ContentType? content_type = get_content_type(description.ns_uri);
+ if (content_type == null) {
+ // TODO(hrxi): how do we signal an unknown content type?
+ throw new IqError.NOT_IMPLEMENTED("unknown content type");
+ }
+ ContentParameters content_params = content_type.parse_content_parameters(description);
+
+ TransportType type = content_type.content_type_transport_type();
+ Session session = new Session.initiate_received(sid, type, transport_params, iq.from, name);
+ stream.get_flag(Flag.IDENTITY).add_session(session);
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.result(iq));
+
+ if (transport == null || transport.transport_type() != type) {
+ StanzaNode reason = new StanzaNode.build("reason", NS_URI)
+ .put_node(new StanzaNode.build("unsupported-transports", NS_URI));
+ session.terminate(stream, reason);
+ return;
+ }
+
+ content_params.on_session_initiate(stream, session);
+ }
+
+ public void on_iq_set(XmppStream stream, Iq.Stanza iq) {
+ try {
+ handle_iq_set(stream, iq);
+ } catch (IqError e) {
+ send_iq_error(e, stream, iq);
+ }
+ }
+
+ public void handle_iq_set(XmppStream stream, Iq.Stanza iq) throws IqError {
+ StanzaNode? jingle = iq.stanza.get_subnode("jingle", NS_URI);
+ string? sid = jingle != null ? jingle.get_attribute("sid") : null;
+ string? action = jingle != null ? jingle.get_attribute("action") : null;
+ if (jingle == null || sid == null || action == null) {
+ throw new IqError.BAD_REQUEST("missing jingle node, sid or action");
+ }
+ Session? session = stream.get_flag(Flag.IDENTITY).get_session(sid);
+ if (action == "session-initiate") {
+ if (session != null) {
+ // TODO(hrxi): Info leak if other clients use predictable session IDs?
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.error(iq, new ErrorStanza.build(ErrorStanza.TYPE_MODIFY, ErrorStanza.CONDITION_CONFLICT, "session ID already in use", null)));
+ return;
+ }
+ handle_session_initiate(stream, sid, jingle, iq);
+ return;
+ }
+ if (session == null) {
+ StanzaNode unknown_session = new StanzaNode.build("unknown-session", ERROR_NS_URI).add_self_xmlns();
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.error(iq, new ErrorStanza.item_not_found(unknown_session)));
+ return;
+ }
+ session.handle_iq_set(stream, action, jingle, iq);
+ }
+
+ public override string get_ns() { return NS_URI; }
+ public override string get_id() { return IDENTITY.id; }
+}
+
+public enum TransportType {
+ DATAGRAM,
+ STREAMING,
+}
+
+public enum Senders {
+ BOTH,
+ INITIATOR,
+ NONE,
+ RESPONDER;
+
+ public string to_string() {
+ switch (this) {
+ case BOTH: return "both";
+ case INITIATOR: return "initiator";
+ case NONE: return "none";
+ case RESPONDER: return "responder";
+ }
+ assert_not_reached();
+ }
+}
+
+public interface Transport : Object {
+ public abstract string transport_ns_uri();
+ public abstract bool is_transport_available(XmppStream stream, Jid full_jid);
+ public abstract TransportType transport_type();
+ public abstract TransportParameters create_transport_parameters();
+ public abstract TransportParameters parse_transport_parameters(StanzaNode transport) throws IqError;
+}
+
+public interface TransportParameters : Object {
+ public abstract string transport_ns_uri();
+ public abstract StanzaNode to_transport_stanza_node();
+ public abstract void update_transport(StanzaNode transport) throws IqError;
+ public abstract IOStream create_transport_connection(XmppStream stream, Jid peer_full_jid, Role role);
+}
+
+public enum Role {
+ INITIATOR,
+ RESPONDER;
+
+ public string to_string() {
+ switch (this) {
+ case INITIATOR: return "initiator";
+ case RESPONDER: return "responder";
+ }
+ assert_not_reached();
+ }
+}
+
+public interface ContentType : Object {
+ public abstract string content_type_ns_uri();
+ public abstract TransportType content_type_transport_type();
+ public abstract ContentParameters parse_content_parameters(StanzaNode description) throws IqError;
+}
+
+public interface ContentParameters : Object {
+ public abstract void on_session_initiate(XmppStream stream, Session session);
+}
+
+
+public class Session {
+ // INITIATE_SENT -> ACTIVE -> ENDED
+ // INITIATE_RECEIVED -> ACTIVE -> ENDED
+ public enum State {
+ INITIATE_SENT,
+ INITIATE_RECEIVED,
+ ACTIVE,
+ ENDED,
+ }
+
+ public State state { get; private set; }
+
+ public string sid { get; private set; }
+ public Type type_ { get; private set; }
+ public Jid peer_full_jid { get; private set; }
+ public string content_name { get; private set; }
+
+ // INITIATE_SENT | INITIATE_RECEIVED
+ TransportParameters? transport = null;
+
+ // ACTIVE
+ public IOStream? conn { get; private set; }
+
+ // Only interesting in INITIATE_SENT.
+ // Signals that the session has been accepted by the peer.
+ public signal void accepted(XmppStream stream);
+
+ public Session.initiate_sent(string sid, Type type, TransportParameters transport, Jid peer_full_jid, string content_name) {
+ this.state = INITIATE_SENT;
+ this.sid = sid;
+ this.type_ = type;
+ this.peer_full_jid = peer_full_jid;
+ this.content_name = content_name;
+ this.transport = transport;
+ this.conn = null;
+ }
+
+ public Session.initiate_received(string sid, Type type, TransportParameters? transport, Jid peer_full_jid, string content_name) {
+ this.state = INITIATE_RECEIVED;
+ this.sid = sid;
+ this.type_ = type;
+ this.peer_full_jid = peer_full_jid;
+ this.content_name = content_name;
+ this.transport = transport;
+ this.conn = null;
+ }
+
+ public void handle_iq_set(XmppStream stream, string action, StanzaNode jingle, Iq.Stanza iq) throws IqError {
+ switch (action) {
+ case "session-accept":
+ if (state != INITIATE_SENT) {
+ throw new IqError.OUT_OF_ORDER("got session-accept while not waiting for one");
+ }
+ handle_session_accept(stream, jingle, iq);
+ break;
+ case "session-terminate":
+ handle_session_terminate(stream, jingle, iq);
+ break;
+ case "content-accept":
+ case "content-add":
+ case "content-modify":
+ case "content-reject":
+ case "content-remove":
+ case "security-info":
+ case "transport-accept":
+ case "transport-info":
+ case "transport-reject":
+ case "transport-replace":
+ throw new IqError.NOT_IMPLEMENTED(@"$(action) is not implemented");
+ default:
+ throw new IqError.BAD_REQUEST("invalid action");
+ }
+ }
+ void handle_session_accept(XmppStream stream, StanzaNode jingle, Iq.Stanza iq) throws IqError {
+ string? responder_str = jingle.get_attribute("responder");
+ Jid responder;
+ if (responder_str != null) {
+ responder = Jid.parse(responder_str) ?? iq.from;
+ } else {
+ responder = iq.from; // TODO(hrxi): and above, can we assume iq.from != null
+ // TODO(hrxi): more sanity checking, perhaps replace who we're talking to
+ }
+ if (!responder.is_full()) {
+ throw new IqError.BAD_REQUEST("invalid responder JID");
+ }
+ Gee.List<StanzaNode> contents = jingle.get_subnodes("content");
+ if (contents.size == 0) {
+ // TODO(hrxi): here and below, should we terminate the session?
+ throw new IqError.BAD_REQUEST("missing content node");
+ }
+ if (contents.size > 1) {
+ throw new IqError.NOT_IMPLEMENTED("can't process multiple content nodes");
+ }
+ StanzaNode content = contents[0];
+ StanzaNode description = get_single_node_anyns(content, "description");
+ StanzaNode transport_node = get_single_node_anyns(content, "transport");
+ if (transport_node.ns_uri != transport.transport_ns_uri()) {
+ throw new IqError.BAD_REQUEST("session-accept with unnegotiated transport method");
+ }
+ transport.update_transport(transport_node);
+ conn = transport.create_transport_connection(stream, peer_full_jid, Role.INITIATOR);
+ transport = null;
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.result(iq));
+ state = ACTIVE;
+ accepted(stream);
+ }
+ void handle_session_terminate(XmppStream stream, StanzaNode jingle, Iq.Stanza iq) throws IqError {
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.result(iq));
+ // TODO(hrxi): also handle presence type=unavailable
+ }
+
+ public void accept(XmppStream stream, StanzaNode description) {
+ if (state != INITIATE_RECEIVED) {
+ return; // TODO(hrxi): what to do?
+ }
+ StanzaNode jingle = new StanzaNode.build("jingle", NS_URI)
+ .add_self_xmlns()
+ .put_attribute("action", "session-accept")
+ .put_attribute("sid", sid)
+ .put_node(new StanzaNode.build("content", NS_URI)
+ .put_attribute("creator", "initiator")
+ .put_attribute("name", content_name)
+ .put_node(description)
+ .put_node(transport.to_transport_stanza_node())
+ );
+ Iq.Stanza iq = new Iq.Stanza.set(jingle) { to=peer_full_jid };
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, iq);
+
+ conn = transport.create_transport_connection(stream, peer_full_jid, Role.RESPONDER);
+ transport = null;
+
+ state = ACTIVE;
+ }
+
+ public void reject(XmppStream stream) {
+ if (state != INITIATE_RECEIVED) {
+ return; // TODO(hrxi): what to do?
+ }
+ StanzaNode reason = new StanzaNode.build("reason", NS_URI)
+ .put_node(new StanzaNode.build("decline", NS_URI));
+ terminate(stream, reason);
+ }
+
+ public void set_application_error(XmppStream stream, StanzaNode? application_reason = null) {
+ StanzaNode reason = new StanzaNode.build("reason", NS_URI)
+ .put_node(new StanzaNode.build("failed-application", NS_URI));
+ if (application_reason != null) {
+ reason.put_node(application_reason);
+ }
+ terminate(stream, reason);
+ }
+
+ public void close_connection(XmppStream stream) {
+ if (state != ACTIVE) {
+ return; // TODO(hrxi): what to do?
+ }
+ conn.close();
+ }
+
+ public void terminate(XmppStream stream, StanzaNode reason) {
+ if (state != INITIATE_SENT && state != INITIATE_RECEIVED && state != ACTIVE) {
+ // TODO(hrxi): what to do?
+ return;
+ }
+ if (state == ACTIVE) {
+ conn.close();
+ }
+
+ StanzaNode jingle = new StanzaNode.build("jingle", NS_URI)
+ .add_self_xmlns()
+ .put_attribute("action", "session-terminate")
+ .put_attribute("sid", sid)
+ .put_node(reason);
+ Iq.Stanza iq = new Iq.Stanza.set(jingle) { to=peer_full_jid };
+ stream.get_module(Iq.Module.IDENTITY).send_iq(stream, iq);
+
+ state = ENDED;
+ // Immediately remove the session from the open sessions as per the
+ // XEP, don't wait for confirmation.
+ stream.get_flag(Flag.IDENTITY).remove_session(sid);
+ }
+}
+
+public class Flag : XmppStreamFlag {
+ public static FlagIdentity<Flag> IDENTITY = new FlagIdentity<Flag>(NS_URI, "jingle");
+
+ private HashMap<string, Session> sessions = new HashMap<string, Session>();
+
+ public void add_session(Session session) {
+ sessions[session.sid] = session;
+ }
+ public Session? get_session(string sid) {
+ return sessions.has_key(sid) ? sessions[sid] : null;
+ }
+ public void remove_session(string sid) {
+ sessions.unset(sid);
+ }
+
+ public override string get_ns() { return NS_URI; }
+ public override string get_id() { return IDENTITY.id; }
+}
+
+}
diff --git a/xmpp-vala/src/module/xep/0234_jingle_file_transfer.vala b/xmpp-vala/src/module/xep/0234_jingle_file_transfer.vala
new file mode 100644
index 00000000..57222bae
--- /dev/null
+++ b/xmpp-vala/src/module/xep/0234_jingle_file_transfer.vala
@@ -0,0 +1,130 @@
+using Gee;
+using Xmpp;
+using Xmpp.Xep;
+
+namespace Xmpp.Xep.JingleFileTransfer {
+
+private const string NS_URI = "urn:xmpp:jingle:apps:file-transfer:5";
+
+public class Module : Jingle.ContentType, XmppStreamModule {
+ public static Xmpp.ModuleIdentity<Module> IDENTITY = new Xmpp.ModuleIdentity<Module>(NS_URI, "0234_jingle_file_transfer");
+
+ public override void attach(XmppStream stream) {
+ stream.get_module(ServiceDiscovery.Module.IDENTITY).add_feature(stream, NS_URI);
+ stream.get_module(Jingle.Module.IDENTITY).register_content_type(this);
+ }
+ public override void detach(XmppStream stream) { }
+
+ public string content_type_ns_uri() {
+ return NS_URI;
+ }
+ public Jingle.TransportType content_type_transport_type() {
+ return Jingle.TransportType.STREAMING;
+ }
+ public Jingle.ContentParameters parse_content_parameters(StanzaNode description) throws Jingle.IqError {
+ return Parameters.parse(this, description);
+ }
+
+ public signal void file_incoming(XmppStream stream, FileTransfer file_transfer);
+
+ public bool is_available(XmppStream stream, Jid full_jid) {
+ bool? has_feature = stream.get_flag(ServiceDiscovery.Flag.IDENTITY).has_entity_feature(full_jid, NS_URI);
+ if (has_feature == null || !(!)has_feature) {
+ return false;
+ }
+ return stream.get_module(Jingle.Module.IDENTITY).is_available(stream, Jingle.TransportType.STREAMING, full_jid);
+ }
+
+ public async void offer_file_stream(XmppStream stream, Jid receiver_full_jid, InputStream input_stream, string basename, int64 size) throws IOError {
+ StanzaNode description = new StanzaNode.build("description", NS_URI)
+ .add_self_xmlns()
+ .put_node(new StanzaNode.build("file", NS_URI)
+ .put_node(new StanzaNode.build("name", NS_URI).put_node(new StanzaNode.text(basename)))
+ .put_node(new StanzaNode.build("size", NS_URI).put_node(new StanzaNode.text(size.to_string()))));
+ // TODO(hrxi): Add the mandatory hash field
+
+ Jingle.Session session = stream.get_module(Jingle.Module.IDENTITY)
+ .create_session(stream, Jingle.TransportType.STREAMING, receiver_full_jid, Jingle.Senders.INITIATOR, "a-file-offer", description); // TODO(hrxi): Why "a-file-offer"?
+
+ SourceFunc callback = offer_file_stream.callback;
+ session.accepted.connect((stream) => {
+ session.conn.input_stream.close();
+ Idle.add((owned) callback);
+ });
+ yield;
+
+ // TODO(hrxi): catch errors
+ yield session.conn.output_stream.splice_async(input_stream, OutputStreamSpliceFlags.CLOSE_SOURCE|OutputStreamSpliceFlags.CLOSE_TARGET);
+ }
+
+ public override string get_ns() { return NS_URI; }
+ public override string get_id() { return IDENTITY.id; }
+}
+
+public class Parameters : Jingle.ContentParameters, Object {
+ Module parent;
+ string? media_type;
+ public string? name { get; private set; }
+ public int64 size { get; private set; }
+ public StanzaNode original_description { get; private set; }
+ public Parameters(Module parent, StanzaNode original_description, string? media_type, string? name, int64? size) {
+ this.parent = parent;
+ this.original_description = original_description;
+ this.media_type = media_type;
+ this.name = name;
+ this.size = size;
+ }
+ public static Parameters parse(Module parent, StanzaNode description) throws Jingle.IqError {
+ Gee.List<StanzaNode> files = description.get_subnodes("file", NS_URI);
+ if (files.size != 1) {
+ throw new Jingle.IqError.BAD_REQUEST("there needs to be exactly one file node");
+ }
+ StanzaNode file = files[0];
+ StanzaNode? media_type_node = file.get_subnode("media-type", NS_URI);
+ StanzaNode? name_node = file.get_subnode("name", NS_URI);
+ StanzaNode? size_node = file.get_subnode("size", NS_URI);
+ string? media_type = media_type_node != null ? media_type_node.get_string_content() : null;
+ string? name = name_node != null ? name_node.get_string_content() : null;
+ string? size_raw = size_node != null ? size_node.get_string_content() : null;
+ // TODO(hrxi): For some reason, the ?:-expression does not work due to a type error.
+ //int64? size = size_raw != null ? int64.parse(size_raw) : null; // TODO(hrxi): this has no error handling
+ int64 size = -1;
+ if (size_raw != null) {
+ size = int64.parse(size_raw);
+ if (size < 0) {
+ throw new Jingle.IqError.BAD_REQUEST("negative file size is invalid");
+ }
+ }
+
+ return new Parameters(parent, description, media_type, name, size);
+ }
+ void on_session_initiate(XmppStream stream, Jingle.Session session) {
+ parent.file_incoming(stream, new FileTransfer(session, this));
+ }
+}
+
+public class FileTransfer : Object {
+ Jingle.Session session;
+ Parameters parameters;
+
+ public Jid peer { get { return session.peer_full_jid; } }
+ public string? file_name { get { return parameters.name; } }
+ public int64 size { get { return parameters.size; } }
+
+ public InputStream? stream { get { return session.conn != null ? session.conn.input_stream : null; } }
+
+ public FileTransfer(Jingle.Session session, Parameters parameters) {
+ this.session = session;
+ this.parameters = parameters;
+ }
+
+ public void accept(XmppStream stream) {
+ session.accept(stream, parameters.original_description);
+ session.conn.output_stream.close();
+ }
+ public void reject(XmppStream stream) {
+ session.reject(stream);
+ }
+}
+
+}
diff --git a/xmpp-vala/src/module/xep/0261_jingle_in_band_bytestreams.vala b/xmpp-vala/src/module/xep/0261_jingle_in_band_bytestreams.vala
new file mode 100644
index 00000000..dc2e8d7c
--- /dev/null
+++ b/xmpp-vala/src/module/xep/0261_jingle_in_band_bytestreams.vala
@@ -0,0 +1,77 @@
+using Xmpp;
+using Xmpp.Xep;
+
+namespace Xmpp.Xep.JingleInBandBytestreams {
+
+private const string NS_URI = "urn:xmpp:jingle:transports:ibb:1";
+private const int DEFAULT_BLOCKSIZE = 4096;
+private const int MAX_BLOCKSIZE = 65535;
+
+public class Module : Jingle.Transport, XmppStreamModule {
+ public static Xmpp.ModuleIdentity<Module> IDENTITY = new Xmpp.ModuleIdentity<Module>(NS_URI, "0261_jingle_in_band_bytestreams");
+
+ public override void attach(XmppStream stream) {
+ stream.get_module(Jingle.Module.IDENTITY).register_transport(this);
+ stream.get_module(ServiceDiscovery.Module.IDENTITY).add_feature(stream, NS_URI);
+ }
+ public override void detach(XmppStream stream) { }
+
+ public override string get_ns() { return NS_URI; }
+ public override string get_id() { return IDENTITY.id; }
+
+ public bool is_transport_available(XmppStream stream, Jid full_jid) {
+ bool? result = stream.get_flag(ServiceDiscovery.Flag.IDENTITY).has_entity_feature(full_jid, NS_URI);
+ return result != null && result;
+ }
+
+ public string transport_ns_uri() {
+ return NS_URI;
+ }
+ public Jingle.TransportType transport_type() {
+ return Jingle.TransportType.STREAMING;
+ }
+ public Jingle.TransportParameters create_transport_parameters() {
+ return new Parameters(random_uuid(), DEFAULT_BLOCKSIZE);
+ }
+ public Jingle.TransportParameters parse_transport_parameters(StanzaNode transport) throws Jingle.IqError {
+ return Parameters.parse(transport);
+ }
+}
+
+class Parameters : Jingle.TransportParameters, Object {
+ public string sid { get; private set; }
+ public int block_size { get; private set; }
+ public Parameters(string sid, int block_size) {
+ this.sid = sid;
+ this.block_size = block_size;
+ }
+ public static Parameters parse(StanzaNode transport) throws Jingle.IqError {
+ string? sid = transport.get_attribute("sid");
+ int block_size = transport.get_attribute_int("block-size");
+ if (sid == null || block_size <= 0 || block_size > MAX_BLOCKSIZE) {
+ throw new Jingle.IqError.BAD_REQUEST("missing or invalid sid or blocksize");
+ }
+ return new Parameters(sid, block_size);
+ }
+ public string transport_ns_uri() {
+ return NS_URI;
+ }
+ public StanzaNode to_transport_stanza_node() {
+ return new StanzaNode.build("transport", NS_URI)
+ .add_self_xmlns()
+ .put_attribute("block-size", block_size.to_string())
+ .put_attribute("sid", sid);
+ }
+ public void update_transport(StanzaNode transport) throws Jingle.IqError {
+ Parameters other = Parameters.parse(transport);
+ if (other.sid != sid || other.block_size > block_size) {
+ throw new Jingle.IqError.NOT_ACCEPTABLE("invalid IBB sid or block_size");
+ }
+ block_size = other.block_size;
+ }
+ public IOStream create_transport_connection(XmppStream stream, Jid peer_full_jid, Jingle.Role role) {
+ return InBandBytestreams.Connection.create(stream, peer_full_jid, sid, block_size, role == Jingle.Role.INITIATOR);
+ }
+}
+
+}