anotherim/anotherim-desktop
2
0
Fork 0
Code Issues Pull requests Actions Packages Projects Releases Wiki Activity

Fall back to IBB if S5B does not work out

Browse source 
This mostly happens if connectivity to the candidates cannot be
established.
This commit is contained in:
hrxi 2019-08-05 20:54:45 +02:00
parent 2327dc783c
commit 9a1e9864d6
2 changed files with 189 additions and 40 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

205
xmpp-vala/src/module/xep/0166_jingle.vala
View file

@ -139,12 +139,15 @@ public class Module : XmppStreamModule, Iq.Handler {
} }
return transports[ns_uri]; return transports[ns_uri];
} }
public Transport? select_transport(XmppStream stream, TransportType type, Jid receiver_full_jid) { public Transport? select_transport(XmppStream stream, TransportType type, Jid receiver_full_jid, Set<string> blacklist) {
Transport? result = null; Transport? result = null;
foreach (Transport transport in transports.values) { foreach (Transport transport in transports.values) {
if (transport.transport_type() != type) { if (transport.transport_type() != type) {
continue; continue;
} }
if (transport.transport_ns_uri() in blacklist) {
continue;
}
if (transport.is_transport_available(stream, receiver_full_jid)) { if (transport.is_transport_available(stream, receiver_full_jid)) {
if (result != null) { if (result != null) {
if (result.transport_priority() >= transport.transport_priority()) { if (result.transport_priority() >= transport.transport_priority()) {
@ -163,14 +166,14 @@ public class Module : XmppStreamModule, Iq.Handler {
} }
public bool is_available(XmppStream stream, TransportType type, Jid full_jid) { 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; return is_jingle_available(stream, full_jid) && select_transport(stream, type, full_jid, Set.empty()) != null;
} }
public Session create_session(XmppStream stream, TransportType type, Jid receiver_full_jid, Senders senders, string content_name, StanzaNode description) throws Error { 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)) { if (!is_jingle_available(stream, receiver_full_jid)) {
throw new Error.NO_SHARED_PROTOCOLS("No Jingle support"); throw new Error.NO_SHARED_PROTOCOLS("No Jingle support");
} }
Transport? transport = select_transport(stream, type, receiver_full_jid); Transport? transport = select_transport(stream, type, receiver_full_jid, Set.empty());
if (transport == null) { if (transport == null) {
throw new Error.NO_SHARED_PROTOCOLS("No suitable transports"); throw new Error.NO_SHARED_PROTOCOLS("No suitable transports");
} }
@ -369,11 +372,13 @@ public interface ContentParameters : Object {
public class Session { public class Session {
// INITIATE_SENT -> CONNECTING -> ACTIVE -> ENDED // INITIATE_SENT -> CONNECTING -> [REPLACING_TRANSPORT -> CONNECTING ->]... ACTIVE -> ENDED
// INITIATE_RECEIVED -> CONNECTING -> ACTIVE -> ENDED // INITIATE_RECEIVED -> CONNECTING -> [WAITING_FOR_TRANSPORT_REPLACE -> CONNECTING ->].. ACTIVE -> ENDED
public enum State { public enum State {
INITIATE_SENT, INITIATE_SENT,
REPLACING_TRANSPORT,
INITIATE_RECEIVED, INITIATE_RECEIVED,
WAITING_FOR_TRANSPORT_REPLACE,
CONNECTING, CONNECTING,
ACTIVE, ACTIVE,
ENDED, ENDED,
@ -381,8 +386,9 @@ public class Session {
public State state { get; private set; } public State state { get; private set; }
public Role role { get; private set; }
public string sid { get; private set; } public string sid { get; private set; }
public Type type_ { get; private set; } public TransportType type_ { get; private set; }
public Jid local_full_jid { get; private set; } public Jid local_full_jid { get; private set; }
public Jid peer_full_jid { get; private set; } public Jid peer_full_jid { get; private set; }
public Role content_creator { get; private set; } public Role content_creator { get; private set; }
@ -392,25 +398,30 @@ public class Session {
public IOStream conn { get { return connection; } } public IOStream conn { get { return connection; } }
// INITIATE_SENT | INITIATE_RECEIVED | CONNECTING // INITIATE_SENT | INITIATE_RECEIVED | CONNECTING
Set<string> tried_transport_methods = new HashSet<string>();
TransportParameters? transport = null; TransportParameters? transport = null;
SessionTerminate session_terminate_handler; SessionTerminate session_terminate_handler;
public Session.initiate_sent(string sid, Type type, TransportParameters transport, Jid local_full_jid, Jid peer_full_jid, string content_name, owned SessionTerminate session_terminate_handler) { public Session.initiate_sent(string sid, TransportType type, TransportParameters transport, Jid local_full_jid, Jid peer_full_jid, string content_name, owned SessionTerminate session_terminate_handler) {
this.state = State.INITIATE_SENT; this.state = State.INITIATE_SENT;
this.role = Role.INITIATOR;
this.sid = sid; this.sid = sid;
this.type_ = type; this.type_ = type;
this.local_full_jid = local_full_jid; this.local_full_jid = local_full_jid;
this.peer_full_jid = peer_full_jid; this.peer_full_jid = peer_full_jid;
this.content_creator = Role.INITIATOR; this.content_creator = Role.INITIATOR;
this.content_name = content_name; this.content_name = content_name;
this.tried_transport_methods = new HashSet<string>();
this.tried_transport_methods.add(transport.transport_ns_uri());
this.transport = transport; this.transport = transport;
this.connection = new Connection(this); this.connection = new Connection(this);
this.session_terminate_handler = (owned)session_terminate_handler; this.session_terminate_handler = (owned)session_terminate_handler;
} }
public Session.initiate_received(string sid, Type type, TransportParameters? transport, Jid local_full_jid, Jid peer_full_jid, string content_name, owned SessionTerminate session_terminate_handler) { public Session.initiate_received(string sid, TransportType type, TransportParameters? transport, Jid local_full_jid, Jid peer_full_jid, string content_name, owned SessionTerminate session_terminate_handler) {
this.state = State.INITIATE_RECEIVED; this.state = State.INITIATE_RECEIVED;
this.role = Role.RESPONDER;
this.sid = sid; this.sid = sid;
this.type_ = type; this.type_ = type;
this.local_full_jid = local_full_jid; this.local_full_jid = local_full_jid;
@ -418,39 +429,87 @@ public class Session {
this.content_creator = Role.INITIATOR; this.content_creator = Role.INITIATOR;
this.content_name = content_name; this.content_name = content_name;
this.transport = transport; this.transport = transport;
this.tried_transport_methods = new HashSet<string>();
if (transport != null) {
this.tried_transport_methods.add(transport.transport_ns_uri());
}
this.connection = new Connection(this); this.connection = new Connection(this);
this.session_terminate_handler = (owned)session_terminate_handler; this.session_terminate_handler = (owned)session_terminate_handler;
} }
public void handle_iq_set(XmppStream stream, string action, StanzaNode jingle, Iq.Stanza iq) throws IqError { public void handle_iq_set(XmppStream stream, string action, StanzaNode jingle, Iq.Stanza iq) throws IqError {
// Validate action.
switch (action) { switch (action) {
case "session-accept": case "session-accept":
if (state != 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": case "session-terminate":
handle_session_terminate(stream, jingle, iq); case "transport-accept":
break; case "transport-reject":
case "transport-replace":
case "transport-info": case "transport-info":
handle_transport_info(stream, jingle, iq); break;
return;
case "content-accept": case "content-accept":
case "content-add": case "content-add":
case "content-modify": case "content-modify":
case "content-reject": case "content-reject":
case "content-remove": case "content-remove":
case "security-info": case "security-info":
case "transport-accept":
case "transport-reject":
case "transport-replace":
throw new IqError.NOT_IMPLEMENTED(@"$(action) is not implemented");
default: default:
throw new IqError.BAD_REQUEST("invalid action"); throw new IqError.BAD_REQUEST("invalid action");
} }
ContentNode? content = null;
StanzaNode? transport = null;
// Do some pre-processing.
if (action != "session-terminate") {
content = get_single_content_node(jingle);
verify_content(content);
switch (action) {
case "transport-accept":
case "transport-reject":
case "transport-replace":
case "transport-info":
switch (state) {
case State.INITIATE_SENT:
case State.REPLACING_TRANSPORT:
case State.INITIATE_RECEIVED:
case State.WAITING_FOR_TRANSPORT_REPLACE:
case State.CONNECTING:
break;
default:
throw new IqError.OUT_OF_ORDER("transport-* unsupported after connection setup");
} }
void handle_session_accept(XmppStream stream, StanzaNode jingle, Iq.Stanza iq) throws IqError { // TODO(hrxi): What to do with description nodes?
if (content.transport == null) {
throw new IqError.BAD_REQUEST("missing transport node");
}
transport = content.transport;
break;
}
}
switch (action) {
case "session-accept":
if (state != State.INITIATE_SENT) {
throw new IqError.OUT_OF_ORDER("got session-accept while not waiting for one");
}
handle_session_accept(stream, content, jingle, iq);
break;
case "session-terminate":
handle_session_terminate(stream, jingle, iq);
break;
case "transport-accept":
handle_transport_accept(stream, transport, jingle, iq);
break;
case "transport-reject":
handle_transport_reject(stream, jingle, iq);
break;
case "transport-replace":
handle_transport_replace(stream, transport, jingle, iq);
break;
case "transport-info":
handle_transport_info(stream, transport, jingle, iq);
break;
}
}
void handle_session_accept(XmppStream stream, ContentNode content, StanzaNode jingle, Iq.Stanza iq) throws IqError {
string? responder_str = jingle.get_attribute("responder"); string? responder_str = jingle.get_attribute("responder");
Jid responder; Jid responder;
if (responder_str != null) { if (responder_str != null) {
@ -462,8 +521,6 @@ public class Session {
if (!responder.is_full()) { if (!responder.is_full()) {
throw new IqError.BAD_REQUEST("invalid responder JID"); throw new IqError.BAD_REQUEST("invalid responder JID");
} }
ContentNode content = get_single_content_node(jingle);
verify_content(content);
if (content.description == null || content.transport == null) { if (content.description == null || content.transport == null) {
throw new IqError.BAD_REQUEST("missing description or transport node"); throw new IqError.BAD_REQUEST("missing description or transport node");
} }
@ -472,8 +529,9 @@ public class Session {
} }
transport.on_transport_accept(content.transport); transport.on_transport_accept(content.transport);
StanzaNode description = content.description; // TODO(hrxi): handle this :P StanzaNode description = content.description; // TODO(hrxi): handle this :P
state = State.CONNECTING;
stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.result(iq)); stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.result(iq));
state = State.CONNECTING;
transport.create_transport_connection(stream, this); transport.create_transport_connection(stream, this);
} }
void connection_created(XmppStream stream, IOStream? conn) { void connection_created(XmppStream stream, IOStream? conn) {
@ -483,12 +541,14 @@ public class Session {
if (conn != null) { if (conn != null) {
state = State.ACTIVE; state = State.ACTIVE;
transport = null; transport = null;
tried_transport_methods.clear();
connection.set_inner(conn); connection.set_inner(conn);
} else { } else {
// TODO(hrxi): try negotiating other transports… if (role == Role.INITIATOR) {
StanzaNode reason = new StanzaNode.build("reason", NS_URI) select_new_transport(stream);
.put_node(new StanzaNode.build("failed-transport", NS_URI)); } else {
terminate(reason, "failed transport"); state = State.WAITING_FOR_TRANSPORT_REPLACE;
}
} }
} }
void handle_session_terminate(XmppStream stream, StanzaNode jingle, Iq.Stanza iq) throws IqError { void handle_session_terminate(XmppStream stream, StanzaNode jingle, Iq.Stanza iq) throws IqError {
@ -499,17 +559,88 @@ public class Session {
stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.result(iq)); stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.result(iq));
// TODO(hrxi): also handle presence type=unavailable // TODO(hrxi): also handle presence type=unavailable
} }
void handle_transport_info(XmppStream stream, StanzaNode jingle, Iq.Stanza iq) throws IqError { void select_new_transport(XmppStream stream) {
if (state != State.INITIATE_RECEIVED && state != State.INITIATE_SENT && state != State.CONNECTING) { Transport? new_transport = stream.get_module(Module.IDENTITY).select_transport(stream, type_, peer_full_jid, tried_transport_methods);
if (new_transport == null) {
StanzaNode reason = new StanzaNode.build("reason", NS_URI)
.put_node(new StanzaNode.build("failed-transport", NS_URI));
terminate(reason, "failed transport");
return;
}
tried_transport_methods.add(new_transport.transport_ns_uri());
transport = new_transport.create_transport_parameters(stream, local_full_jid, peer_full_jid);
StanzaNode jingle = new StanzaNode.build("jingle", NS_URI)
.add_self_xmlns()
.put_attribute("action", "transport-replace")
.put_attribute("sid", sid)
.put_node(new StanzaNode.build("content", NS_URI)
.put_attribute("creator", "initiator")
.put_attribute("name", content_name)
.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);
state = State.REPLACING_TRANSPORT;
}
void handle_transport_accept(XmppStream stream, StanzaNode transport_node, StanzaNode jingle, Iq.Stanza iq) throws IqError {
if (state != State.REPLACING_TRANSPORT) {
throw new IqError.OUT_OF_ORDER("no outstanding transport-replace request");
}
if (transport_node.ns_uri != transport.transport_ns_uri()) {
throw new IqError.BAD_REQUEST("transport-accept with unnegotiated transport method");
}
transport.on_transport_accept(transport_node);
state = State.CONNECTING;
stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.result(iq)); stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.result(iq));
throw new IqError.UNSUPPORTED_INFO("transport-info unsupported after connection setup"); transport.create_transport_connection(stream, this);
} }
ContentNode content = get_single_content_node(jingle); void handle_transport_reject(XmppStream stream, StanzaNode jingle, Iq.Stanza iq) throws IqError {
verify_content(content); if (state != State.REPLACING_TRANSPORT) {
if (content.description != null || content.transport == null) { throw new IqError.OUT_OF_ORDER("no outstanding transport-replace request");
throw new IqError.BAD_REQUEST("unexpected description node or missing transport node");
} }
transport.on_transport_info(content.transport); stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.result(iq));
select_new_transport(stream);
}
void handle_transport_replace(XmppStream stream, StanzaNode transport_node, StanzaNode jingle, Iq.Stanza iq) throws IqError {
Transport? transport = stream.get_module(Module.IDENTITY).get_transport(transport_node.ns_uri);
TransportParameters? parameters = null;
if (transport != null) {
// Just parse the transport info for the errors.
parameters = transport.parse_transport_parameters(stream, local_full_jid, peer_full_jid, transport_node);
}
stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.result(iq));
if (state != State.WAITING_FOR_TRANSPORT_REPLACE || transport == null) {
StanzaNode jingle_response = new StanzaNode.build("jingle", NS_URI)
.add_self_xmlns()
.put_attribute("action", "transport-reject")
.put_attribute("sid", sid)
.put_node(new StanzaNode.build("content", NS_URI)
.put_attribute("creator", "initiator")
.put_attribute("name", content_name)
.put_node(transport_node)
);
Iq.Stanza iq_response = new Iq.Stanza.set(jingle_response) { to=peer_full_jid };
stream.get_module(Iq.Module.IDENTITY).send_iq(stream, iq_response);
return;
}
this.transport = parameters;
StanzaNode jingle_response = new StanzaNode.build("jingle", NS_URI)
.add_self_xmlns()
.put_attribute("action", "transport-accept")
.put_attribute("sid", sid)
.put_node(new StanzaNode.build("content", NS_URI)
.put_attribute("creator", "initiator")
.put_attribute("name", content_name)
.put_node(this.transport.to_transport_stanza_node())
);
Iq.Stanza iq_response = new Iq.Stanza.set(jingle_response) { to=peer_full_jid };
stream.get_module(Iq.Module.IDENTITY).send_iq(stream, iq_response);
state = State.CONNECTING;
this.transport.create_transport_connection(stream, this);
}
void handle_transport_info(XmppStream stream, StanzaNode transport, StanzaNode jingle, Iq.Stanza iq) throws IqError {
this.transport.on_transport_info(transport);
stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.result(iq)); stream.get_module(Iq.Module.IDENTITY).send_iq(stream, new Iq.Stanza.result(iq));
} }
void verify_content(ContentNode content) throws IqError { void verify_content(ContentNode content) throws IqError {

20
xmpp-vala/src/module/xep/0260_jingle_socks5_bytestreams.vala
View file

@ -172,6 +172,7 @@ class Parameters : Jingle.TransportParameters, Object {
string? waiting_for_activation_cid = null; string? waiting_for_activation_cid = null;
SourceFunc waiting_for_activation_callback; SourceFunc waiting_for_activation_callback;
bool waiting_for_activation_error = false;
private static string calculate_dstaddr(string sid, Jid first_jid, Jid second_jid) { private static string calculate_dstaddr(string sid, Jid first_jid, Jid second_jid) {
string hashed = sid + first_jid.to_string() + second_jid.to_string(); string hashed = sid + first_jid.to_string() + second_jid.to_string();
@ -200,7 +201,6 @@ class Parameters : Jingle.TransportParameters, Object {
throw new Jingle.IqError.BAD_REQUEST("too long dstaddr"); throw new Jingle.IqError.BAD_REQUEST("too long dstaddr");
} }
Parameters result = new Parameters(Jingle.Role.RESPONDER, sid, local_full_jid, peer_full_jid, dstaddr); Parameters result = new Parameters(Jingle.Role.RESPONDER, sid, local_full_jid, peer_full_jid, dstaddr);
//result.remote_candidates.add(new Candidate("b", "0.0.0.0", new Jid("a@b/c"), 1234, 2000000000, CandidateType.PROXY));
foreach (StanzaNode candidate in transport.get_subnodes("candidate", NS_URI)) { foreach (StanzaNode candidate in transport.get_subnodes("candidate", NS_URI)) {
result.remote_candidates.add(Candidate.parse(candidate)); result.remote_candidates.add(Candidate.parse(candidate));
} }
@ -237,10 +237,12 @@ class Parameters : Jingle.TransportParameters, Object {
StanzaNode? candidate_error = transport.get_subnode("candidate-error", NS_URI); StanzaNode? candidate_error = transport.get_subnode("candidate-error", NS_URI);
StanzaNode? candidate_used = transport.get_subnode("candidate-used", NS_URI); StanzaNode? candidate_used = transport.get_subnode("candidate-used", NS_URI);
StanzaNode? activated = transport.get_subnode("activated", NS_URI); StanzaNode? activated = transport.get_subnode("activated", NS_URI);
StanzaNode? proxy_error = transport.get_subnode("proxy-error", NS_URI);
int num_children = 0; int num_children = 0;
if (candidate_error != null) { num_children += 1; } if (candidate_error != null) { num_children += 1; }
if (candidate_used != null) { num_children += 1; } if (candidate_used != null) { num_children += 1; }
if (activated != null) { num_children += 1; } if (activated != null) { num_children += 1; }
if (proxy_error != null) { num_children += 1; }
if (num_children == 0) { if (num_children == 0) {
throw new Jingle.IqError.UNSUPPORTED_INFO("unknown transport-info"); throw new Jingle.IqError.UNSUPPORTED_INFO("unknown transport-info");
} else if (num_children > 1) { } else if (num_children > 1) {
@ -263,6 +265,9 @@ class Parameters : Jingle.TransportParameters, Object {
} }
handle_activated(cid); handle_activated(cid);
} }
if (proxy_error != null) {
handle_proxy_error();
}
} }
private void handle_remote_candidate(string? cid) throws Jingle.IqError { private void handle_remote_candidate(string? cid) throws Jingle.IqError {
if (remote_sent_selected_candidate) { if (remote_sent_selected_candidate) {
@ -291,6 +296,15 @@ class Parameters : Jingle.TransportParameters, Object {
Idle.add((owned)waiting_for_activation_callback); Idle.add((owned)waiting_for_activation_callback);
waiting_for_activation_cid = null; waiting_for_activation_cid = null;
} }
private void handle_proxy_error() throws Jingle.IqError {
if (waiting_for_activation_cid == null) {
throw new Jingle.IqError.BAD_REQUEST("unexpected proxy error message");
}
Idle.add((owned)waiting_for_activation_callback);
waiting_for_activation_cid = null;
waiting_for_activation_error = true;
}
private void try_completing_negotiation() { private void try_completing_negotiation() {
if (!remote_sent_selected_candidate || !local_determined_selected_candidate) { if (!remote_sent_selected_candidate || !local_determined_selected_candidate) {
return; return;
@ -346,7 +360,11 @@ class Parameters : Jingle.TransportParameters, Object {
if (strong == null) { if (strong == null) {
return; return;
} }
if (!waiting_for_activation_error) {
strong.set_transport_connection(hack, conn); strong.set_transport_connection(hack, conn);
} else {
strong.set_transport_connection(hack, null);
}
} }
public async void connect_to_local_candidate(Candidate candidate) { public async void connect_to_local_candidate(Candidate candidate) {
try { try {