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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
/*
* Copyright (c) 2011 Tobias Markmann
* Licensed under the simplified BSD license.
* See Documentation/Licenses/BSD-simplified.txt for more information.
*/
/*
* Copyright (c) 2015-2019 Isode Limited.
* All rights reserved.
* See the COPYING file for more information.
*/
#include <Swiften/FileTransfer/SOCKS5BytestreamProxiesManager.h>
#include <memory>
#include <boost/bind.hpp>
#include <Swiften/Base/Log.h>
#include <Swiften/FileTransfer/SOCKS5BytestreamClientSession.h>
#include <Swiften/Network/ConnectionFactory.h>
#include <Swiften/Network/DomainNameAddressQuery.h>
#include <Swiften/Network/DomainNameResolveError.h>
#include <Swiften/Network/DomainNameResolver.h>
#include <Swiften/Network/TimerFactory.h>
namespace Swift {
SOCKS5BytestreamProxiesManager::SOCKS5BytestreamProxiesManager(ConnectionFactory *connFactory, TimerFactory *timeFactory, DomainNameResolver* resolver, IQRouter* iqRouter, const JID& serviceRoot) : connectionFactory_(connFactory), timerFactory_(timeFactory), resolver_(resolver), iqRouter_(iqRouter), serviceRoot_(serviceRoot) {
}
SOCKS5BytestreamProxiesManager::~SOCKS5BytestreamProxiesManager() {
if (proxyFinder_) {
proxyFinder_->stop();
}
for (const auto& sessionsForID : proxySessions_) {
for (const auto& session : sessionsForID.second) {
session.second->onSessionReady.disconnect(boost::bind(&SOCKS5BytestreamProxiesManager::handleProxySessionReady, this,sessionsForID.first, session.first, session.second, _1));
session.second->onFinished.disconnect(boost::bind(&SOCKS5BytestreamProxiesManager::handleProxySessionFinished, this, sessionsForID.first, session.first, session.second, _1));
}
}
}
void SOCKS5BytestreamProxiesManager::addS5BProxy(S5BProxyRequest::ref proxy) {
if (proxy) {
SWIFT_LOG_ASSERT(HostAddress::fromString(proxy->getStreamHost().get().host), warning);
if (!localS5BProxies_) {
localS5BProxies_ = std::vector<S5BProxyRequest::ref>();
}
localS5BProxies_->push_back(proxy);
}
}
const boost::optional<std::vector<S5BProxyRequest::ref> >& SOCKS5BytestreamProxiesManager::getOrDiscoverS5BProxies() {
if (!localS5BProxies_ && !proxyFinder_) {
queryForProxies();
}
return localS5BProxies_;
}
void SOCKS5BytestreamProxiesManager::connectToProxies(const std::string& sessionID) {
SWIFT_LOG(debug) << "session ID: " << sessionID;
ProxyJIDClientSessionVector clientSessions;
if (localS5BProxies_) {
for (auto&& proxy : localS5BProxies_.get()) {
auto proxyHostAddress = HostAddress::fromString(proxy->getStreamHost().get().host);
if (proxyHostAddress) {
std::shared_ptr<Connection> conn = connectionFactory_->createConnection();
HostAddressPort addressPort = HostAddressPort(proxyHostAddress.get(), proxy->getStreamHost().get().port);
SWIFT_LOG_ASSERT(addressPort.isValid(), warning);
std::shared_ptr<SOCKS5BytestreamClientSession> session = std::make_shared<SOCKS5BytestreamClientSession>(conn, addressPort, sessionID, timerFactory_);
JID proxyJid = proxy->getStreamHost().get().jid;
clientSessions.push_back(std::pair<JID, std::shared_ptr<SOCKS5BytestreamClientSession> >(proxyJid, session));
session->onSessionReady.connect(boost::bind(&SOCKS5BytestreamProxiesManager::handleProxySessionReady, this,sessionID, proxyJid, session, _1));
session->onFinished.connect(boost::bind(&SOCKS5BytestreamProxiesManager::handleProxySessionFinished, this, sessionID, proxyJid, session, _1));
session->start();
}
}
}
proxySessions_[sessionID] = clientSessions;
}
std::shared_ptr<SOCKS5BytestreamClientSession> SOCKS5BytestreamProxiesManager::getProxySessionAndCloseOthers(const JID& proxyJID, const std::string& sessionID) {
// checking parameters
if (proxySessions_.find(sessionID) == proxySessions_.end()) {
return std::shared_ptr<SOCKS5BytestreamClientSession>();
}
// get active session
std::shared_ptr<SOCKS5BytestreamClientSession> activeSession;
for (ProxyJIDClientSessionVector::iterator i = proxySessions_[sessionID].begin(); i != proxySessions_[sessionID].end(); i++) {
i->second->onSessionReady.disconnect(boost::bind(&SOCKS5BytestreamProxiesManager::handleProxySessionReady, this,sessionID, proxyJID, i->second, _1));
i->second->onFinished.disconnect(boost::bind(&SOCKS5BytestreamProxiesManager::handleProxySessionFinished, this, sessionID, proxyJID, i->second, _1));
if (i->first == proxyJID && !activeSession) {
activeSession = i->second;
}
else {
i->second->stop();
}
}
SWIFT_LOG_ASSERT(activeSession, warning) << "No active session with matching ID found.";
proxySessions_.erase(sessionID);
return activeSession;
}
std::shared_ptr<SOCKS5BytestreamClientSession> SOCKS5BytestreamProxiesManager::createSOCKS5BytestreamClientSession(HostAddressPort addressPort, const std::string& destAddr) {
SOCKS5BytestreamClientSession::ref connection = std::make_shared<SOCKS5BytestreamClientSession>(connectionFactory_->createConnection(), addressPort, destAddr, timerFactory_);
return connection;
}
void SOCKS5BytestreamProxiesManager::handleProxiesFound(std::vector<S5BProxyRequest::ref> proxyHosts) {
proxyFinder_->onProxiesFound.disconnect(boost::bind(&SOCKS5BytestreamProxiesManager::handleProxiesFound, this, _1));
for (auto&& proxy : proxyHosts) {
if (proxy) {
auto proxyHostAddress = HostAddress::fromString(proxy->getStreamHost().get().host);
if (proxyHostAddress) {
addS5BProxy(proxy);
onDiscoveredProxiesChanged();
}
else {
DomainNameAddressQuery::ref resolveRequest = resolver_->createAddressQuery(proxy->getStreamHost().get().host);
resolveRequest->onResult.connect(boost::bind(&SOCKS5BytestreamProxiesManager::handleNameLookupResult, this, _1, _2, proxy));
resolveRequest->run();
}
}
}
proxyFinder_->stop();
proxyFinder_.reset();
if (proxyHosts.empty()) {
onDiscoveredProxiesChanged();
}
}
void SOCKS5BytestreamProxiesManager::handleNameLookupResult(const std::vector<HostAddress>& addresses, boost::optional<DomainNameResolveError> error, S5BProxyRequest::ref proxy) {
if (error) {
onDiscoveredProxiesChanged();
}
else {
if (addresses.empty()) {
SWIFT_LOG(warning) << "S5B proxy hostname does not resolve.";
}
else {
// generate proxy per returned address
for (const auto& address : addresses) {
S5BProxyRequest::StreamHost streamHost = proxy->getStreamHost().get();
S5BProxyRequest::ref proxyForAddress = std::make_shared<S5BProxyRequest>(*proxy);
streamHost.host = address.toString();
proxyForAddress->setStreamHost(streamHost);
addS5BProxy(proxyForAddress);
}
}
onDiscoveredProxiesChanged();
}
}
void SOCKS5BytestreamProxiesManager::queryForProxies() {
proxyFinder_ = std::make_shared<SOCKS5BytestreamProxyFinder>(serviceRoot_, iqRouter_);
proxyFinder_->onProxiesFound.connect(boost::bind(&SOCKS5BytestreamProxiesManager::handleProxiesFound, this, _1));
proxyFinder_->start();
}
void SOCKS5BytestreamProxiesManager::handleProxySessionReady(const std::string& sessionID, const JID& jid, std::shared_ptr<SOCKS5BytestreamClientSession> session, bool error) {
session->onSessionReady.disconnect(boost::bind(&SOCKS5BytestreamProxiesManager::handleProxySessionReady, this, boost::cref(sessionID), boost::cref(jid), session, _1));
if (!error) {
// The SOCKS5 bytestream session to the proxy succeeded; stop and remove other sessions.
if (proxySessions_.find(sessionID) != proxySessions_.end()) {
for (ProxyJIDClientSessionVector::iterator i = proxySessions_[sessionID].begin(); i != proxySessions_[sessionID].end();) {
if ((i->first == jid) && (i->second != session)) {
i->second->stop();
i = proxySessions_[sessionID].erase(i);
}
else {
i++;
}
}
}
}
}
void SOCKS5BytestreamProxiesManager::handleProxySessionFinished(const std::string& sessionID, const JID& jid, std::shared_ptr<SOCKS5BytestreamClientSession> session, boost::optional<FileTransferError> error) {
session->onFinished.disconnect(boost::bind(&SOCKS5BytestreamProxiesManager::handleProxySessionFinished, this, sessionID, jid, session, _1));
if (error.is_initialized()) {
// The SOCKS5 bytestream session to the proxy failed; remove it.
if (proxySessions_.find(sessionID) != proxySessions_.end()) {
for (ProxyJIDClientSessionVector::iterator i = proxySessions_[sessionID].begin(); i != proxySessions_[sessionID].end();) {
if ((i->first == jid) && (i->second == session)) {
i->second->stop();
i = proxySessions_[sessionID].erase(i);
break;
}
else {
i++;
}
}
}
}
}
}
|
Swift