1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/*
* Copyright (c) 2011 Remko Tronçon
* Licensed under the GNU General Public License v3.
* See Documentation/Licenses/GPLv3.txt for more information.
*/
#include <Swiften/FileTransfer/IncomingJingleFileTransfer.h>
#include <boost/bind.hpp>
#include <boost/smart_ptr/make_shared.hpp>
#include <Swiften/FileTransfer/RemoteJingleTransportCandidateSelectorFactory.h>
#include <Swiften/FileTransfer/LocalJingleTransportCandidateGeneratorFactory.h>
#include <Swiften/FileTransfer/JingleIncomingIBBTransport.h>
#include <Swiften/Elements/JingleIBBTransportPayload.h>
#include <Swiften/Elements/JingleS5BTransportPayload.h>
#include <Swiften/FileTransfer/RemoteJingleTransportCandidateSelector.h>
#include <Swiften/FileTransfer/LocalJingleTransportCandidateGenerator.h>
namespace Swift {
IncomingJingleFileTransfer::IncomingJingleFileTransfer(
JingleSession::ref session,
JingleContentPayload::ref content,
RemoteJingleTransportCandidateSelectorFactory* candidateSelectorFactory,
LocalJingleTransportCandidateGeneratorFactory* candidateGeneratorFactory,
IQRouter* router) :
session(session),
router(router),
initialContent(content),
contentID(content->getName(), content->getCreator()),
state(Initial),
remoteTransportCandidateSelectFinished(false),
localTransportCandidateSelectFinished(false) {
candidateSelector = candidateSelectorFactory->createCandidateSelector();
candidateSelector->onRemoteTransportCandidateSelectFinished.connect(boost::bind(&IncomingJingleFileTransfer::handleRemoteTransportCandidateSelectFinished, this, _1));
candidateGenerator = candidateGeneratorFactory->createCandidateGenerator();
candidateGenerator->onLocalTransportCandidatesGenerated.connect(boost::bind(&IncomingJingleFileTransfer::handleLocalTransportCandidatesGenerated, this, _1));
session->onTransportInfoReceived.connect(boost::bind(&IncomingJingleFileTransfer::handleTransportInfoReceived, this, _1, _2));
session->onTransportReplaceReceived.connect(boost::bind(&IncomingJingleFileTransfer::handleTransportReplaceReceived, this, _1, _2));
session->onSessionTerminateReceived.connect(boost::bind(&IncomingJingleFileTransfer::handleSessionTerminateReceived, this));
description = initialContent->getDescription<JingleFileTransferDescription>();
assert(description);
}
IncomingJingleFileTransfer::~IncomingJingleFileTransfer() {
session->onSessionTerminateReceived.disconnect(boost::bind(&IncomingJingleFileTransfer::handleSessionTerminateReceived, this));
session->onTransportReplaceReceived.disconnect(boost::bind(&IncomingJingleFileTransfer::handleTransportReplaceReceived, this, _1, _2));
session->onTransportInfoReceived.disconnect(boost::bind(&IncomingJingleFileTransfer::handleTransportInfoReceived, this, _1, _2));
candidateGenerator->onLocalTransportCandidatesGenerated.disconnect(boost::bind(&IncomingJingleFileTransfer::handleLocalTransportCandidatesGenerated, this, _1));
delete candidateGenerator;
candidateSelector->onRemoteTransportCandidateSelectFinished.disconnect(boost::bind(&IncomingJingleFileTransfer::handleRemoteTransportCandidateSelectFinished, this, _1));
delete candidateSelector;
}
void IncomingJingleFileTransfer::accept(WriteBytestream::ref stream) {
assert(!stream);
this->stream = stream;
if (JingleIBBTransportPayload::ref ibbTransport = initialContent->getTransport<JingleIBBTransportPayload>()) {
setActiveTransport(createIBBTransport(ibbTransport));
session->accept();
}
else if (JingleS5BTransportPayload::ref s5bTransport = initialContent->getTransport<JingleS5BTransportPayload>()) {
state = CreatingInitialTransports;
candidateSelector->addRemoteTransportCandidates(s5bTransport);
candidateGenerator->generateLocalTransportCandidates();
}
else {
assert(false);
}
}
void IncomingJingleFileTransfer::handleLocalTransportCandidatesGenerated(JingleTransportPayload::ref candidates) {
if (state == CreatingInitialTransports) {
if (!candidates) {
localTransportCandidateSelectFinished = true;
}
session->accept(candidates);
state = NegotiatingTransport;
candidateSelector->selectCandidate();
}
}
void IncomingJingleFileTransfer::handleRemoteTransportCandidateSelectFinished(JingleTransportPayload::ref transport) {
remoteTransportCandidateSelectFinished = true;
selectedRemoteTransportCandidate = transport;
session->sendTransportInfo(contentID, transport);
checkCandidateSelected();
}
void IncomingJingleFileTransfer::checkCandidateSelected() {
if (localTransportCandidateSelectFinished && remoteTransportCandidateSelectFinished) {
if (candidateGenerator->isActualCandidate(selectedLocalTransportCandidate) && candidateSelector->isActualCandidate(selectedRemoteTransportCandidate)) {
if (candidateGenerator->getPriority(selectedLocalTransportCandidate) > candidateSelector->getPriority(selectedRemoteTransportCandidate)) {
setActiveTransport(candidateGenerator->selectTransport(selectedLocalTransportCandidate));
}
else {
setActiveTransport(candidateSelector->selectTransport(selectedRemoteTransportCandidate));
}
}
else if (candidateSelector->isActualCandidate(selectedRemoteTransportCandidate)) {
setActiveTransport(candidateSelector->selectTransport(selectedRemoteTransportCandidate));
}
else if (candidateGenerator->isActualCandidate(selectedLocalTransportCandidate)) {
setActiveTransport(candidateGenerator->selectTransport(selectedLocalTransportCandidate));
}
else {
state = WaitingForFallbackOrTerminate;
}
}
}
void IncomingJingleFileTransfer::setActiveTransport(JingleTransport::ref transport) {
state = Transferring;
activeTransport = transport;
activeTransport->onDataReceived.connect(boost::bind(&IncomingJingleFileTransfer::handleTransportDataReceived, this, _1));
activeTransport->start();
}
void IncomingJingleFileTransfer::handleSessionTerminateReceived() {
// TODO
state = Terminated;
}
void IncomingJingleFileTransfer::handleTransportDataReceived(const std::vector<unsigned char>& data) {
stream->write(data);
}
void IncomingJingleFileTransfer::handleTransportInfoReceived(const JingleContentID&, JingleTransportPayload::ref transport) {
localTransportCandidateSelectFinished = true;
selectedLocalTransportCandidate = transport;
if (candidateGenerator->isActualCandidate(transport)) {
candidateSelector->setMinimumPriority(candidateGenerator->getPriority(transport));
}
checkCandidateSelected();
}
void IncomingJingleFileTransfer::handleTransportReplaceReceived(const JingleContentID& content, JingleTransportPayload::ref transport) {
if (JingleIBBTransportPayload::ref ibbTransport = boost::dynamic_pointer_cast<JingleIBBTransportPayload>(transport)) {
setActiveTransport(createIBBTransport(ibbTransport));
session->acceptTransport(content, transport);
}
else {
session->rejectTransport(content, transport);
}
}
void IncomingJingleFileTransfer::stopActiveTransport() {
if (activeTransport) {
activeTransport->stop();
activeTransport->onDataReceived.disconnect(boost::bind(&IncomingJingleFileTransfer::handleTransportDataReceived, this, _1));
}
}
JingleIncomingIBBTransport::ref IncomingJingleFileTransfer::createIBBTransport(JingleIBBTransportPayload::ref ibbTransport) {
return boost::make_shared<JingleIncomingIBBTransport>(session->getInitiator(), ibbTransport->getSessionID(), description->getOffer()->size, router);
}
}
|
Swift