1 /*
2 * libjingle
3 * Copyright 2011, Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
12 * and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "talk/base/basicpacketsocketfactory.h"
29
30 #include "talk/base/asyncudpsocket.h"
31 #include "talk/base/asynctcpsocket.h"
32 #include "talk/base/logging.h"
33 #include "talk/base/socketadapters.h"
34 #include "talk/base/thread.h"
35
36 namespace talk_base {
37
BasicPacketSocketFactory(Thread * thread)38 BasicPacketSocketFactory::BasicPacketSocketFactory(
39 Thread* thread)
40 : thread_(thread),
41 socket_factory_(NULL) {
42 }
43
BasicPacketSocketFactory(SocketFactory * socket_factory)44 BasicPacketSocketFactory::BasicPacketSocketFactory(
45 SocketFactory* socket_factory)
46 : thread_(NULL),
47 socket_factory_(socket_factory) {
48 }
49
~BasicPacketSocketFactory()50 BasicPacketSocketFactory::~BasicPacketSocketFactory() {
51 }
52
CreateUdpSocket(const SocketAddress & address,int min_port,int max_port)53 AsyncPacketSocket* BasicPacketSocketFactory::CreateUdpSocket(
54 const SocketAddress& address, int min_port, int max_port) {
55 // UDP sockets are simple.
56 talk_base::AsyncSocket* socket =
57 socket_factory()->CreateAsyncSocket(SOCK_DGRAM);
58 if (!socket) {
59 return NULL;
60 }
61 if (BindSocket(socket, address, min_port, max_port) < 0) {
62 LOG(LS_ERROR) << "UDP bind failed with error "
63 << socket->GetError();
64 delete socket;
65 return NULL;
66 }
67 return new talk_base::AsyncUDPSocket(socket);
68 }
69
CreateServerTcpSocket(const SocketAddress & local_address,int min_port,int max_port,bool listen,bool ssl)70 AsyncPacketSocket* BasicPacketSocketFactory::CreateServerTcpSocket(
71 const SocketAddress& local_address, int min_port, int max_port,
72 bool listen, bool ssl) {
73 talk_base::AsyncSocket* socket =
74 socket_factory()->CreateAsyncSocket(SOCK_STREAM);
75 if (!socket) {
76 return NULL;
77 }
78
79 if (BindSocket(socket, local_address, min_port, max_port) < 0) {
80 LOG(LS_ERROR) << "TCP bind failed with error "
81 << socket->GetError();
82 delete socket;
83 return NULL;
84 }
85
86 // If using SSLTCP, wrap the TCP socket in a pseudo-SSL socket.
87 if (ssl) {
88 socket = new talk_base::AsyncSSLSocket(socket);
89 }
90
91 return new talk_base::AsyncTCPSocket(socket, true);
92 }
93
CreateClientTcpSocket(const SocketAddress & local_address,const SocketAddress & remote_address,const ProxyInfo & proxy_info,const std::string & user_agent,bool ssl)94 AsyncPacketSocket* BasicPacketSocketFactory::CreateClientTcpSocket(
95 const SocketAddress& local_address, const SocketAddress& remote_address,
96 const ProxyInfo& proxy_info, const std::string& user_agent, bool ssl) {
97 talk_base::AsyncSocket* socket =
98 socket_factory()->CreateAsyncSocket(SOCK_STREAM);
99 if (!socket) {
100 return NULL;
101 }
102
103 if (BindSocket(socket, local_address, 0, 0) < 0) {
104 LOG(LS_ERROR) << "TCP bind failed with error "
105 << socket->GetError();
106 delete socket;
107 return NULL;
108 }
109
110 // If using a proxy, wrap the socket in a proxy socket.
111 if (proxy_info.type == talk_base::PROXY_SOCKS5) {
112 socket = new talk_base::AsyncSocksProxySocket(
113 socket, proxy_info.address, proxy_info.username, proxy_info.password);
114 } else if (proxy_info.type == talk_base::PROXY_HTTPS) {
115 socket = new talk_base::AsyncHttpsProxySocket(
116 socket, user_agent, proxy_info.address,
117 proxy_info.username, proxy_info.password);
118 }
119
120 // If using SSLTCP, wrap the TCP socket in a pseudo-SSL socket.
121 if (ssl) {
122 socket = new talk_base::AsyncSSLSocket(socket);
123 }
124
125 if (socket->Connect(remote_address) < 0) {
126 LOG(LS_ERROR) << "TCP connect failed with error "
127 << socket->GetError();
128 delete socket;
129 return NULL;
130 }
131
132 // Finally, wrap that socket in a TCP packet socket.
133 return new talk_base::AsyncTCPSocket(socket, false);
134 }
135
BindSocket(AsyncSocket * socket,const SocketAddress & local_address,int min_port,int max_port)136 int BasicPacketSocketFactory::BindSocket(
137 AsyncSocket* socket, const SocketAddress& local_address,
138 int min_port, int max_port) {
139 int ret = -1;
140 if (min_port == 0 && max_port == 0) {
141 // If there's no port range, let the OS pick a port for us.
142 ret = socket->Bind(local_address);
143 } else {
144 // Otherwise, try to find a port in the provided range.
145 for (int port = min_port; ret < 0 && port <= max_port; ++port) {
146 ret = socket->Bind(talk_base::SocketAddress(local_address.ip(), port));
147 }
148 }
149 return ret;
150 }
151
socket_factory()152 SocketFactory* BasicPacketSocketFactory::socket_factory() {
153 if (thread_)
154 return thread_->socketserver();
155 else
156 return socket_factory_;
157 }
158
159 } // namespace talk_base
160