1 /*
2  *  Copyright 2012 The WebRTC Project Authors. All rights reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 
11 #ifndef WEBRTC_P2P_BASE_TESTTURNSERVER_H_
12 #define WEBRTC_P2P_BASE_TESTTURNSERVER_H_
13 
14 #include <string>
15 #include <vector>
16 
17 #include "webrtc/p2p/base/basicpacketsocketfactory.h"
18 #include "webrtc/p2p/base/stun.h"
19 #include "webrtc/p2p/base/turnserver.h"
20 #include "webrtc/base/asyncudpsocket.h"
21 #include "webrtc/base/thread.h"
22 
23 namespace cricket {
24 
25 static const char kTestRealm[] = "example.org";
26 static const char kTestSoftware[] = "TestTurnServer";
27 
28 class TestTurnRedirector : public TurnRedirectInterface {
29  public:
TestTurnRedirector(const std::vector<rtc::SocketAddress> & addresses)30   explicit TestTurnRedirector(const std::vector<rtc::SocketAddress>& addresses)
31       : alternate_server_addresses_(addresses),
32         iter_(alternate_server_addresses_.begin()) {
33   }
34 
ShouldRedirect(const rtc::SocketAddress &,rtc::SocketAddress * out)35   virtual bool ShouldRedirect(const rtc::SocketAddress&,
36                               rtc::SocketAddress* out) {
37     if (!out || iter_ == alternate_server_addresses_.end()) {
38       return false;
39     }
40     *out = *iter_++;
41     return true;
42   }
43 
44  private:
45   const std::vector<rtc::SocketAddress>& alternate_server_addresses_;
46   std::vector<rtc::SocketAddress>::const_iterator iter_;
47 };
48 
49 class TestTurnServer : public TurnAuthInterface {
50  public:
TestTurnServer(rtc::Thread * thread,const rtc::SocketAddress & udp_int_addr,const rtc::SocketAddress & udp_ext_addr)51   TestTurnServer(rtc::Thread* thread,
52                  const rtc::SocketAddress& udp_int_addr,
53                  const rtc::SocketAddress& udp_ext_addr)
54       : server_(thread) {
55     AddInternalSocket(udp_int_addr, cricket::PROTO_UDP);
56     server_.SetExternalSocketFactory(new rtc::BasicPacketSocketFactory(),
57         udp_ext_addr);
58     server_.set_realm(kTestRealm);
59     server_.set_software(kTestSoftware);
60     server_.set_auth_hook(this);
61   }
62 
set_enable_otu_nonce(bool enable)63   void set_enable_otu_nonce(bool enable) {
64     server_.set_enable_otu_nonce(enable);
65   }
66 
server()67   TurnServer* server() { return &server_; }
68 
set_redirect_hook(TurnRedirectInterface * redirect_hook)69   void set_redirect_hook(TurnRedirectInterface* redirect_hook) {
70     server_.set_redirect_hook(redirect_hook);
71   }
72 
AddInternalSocket(const rtc::SocketAddress & int_addr,ProtocolType proto)73   void AddInternalSocket(const rtc::SocketAddress& int_addr,
74                          ProtocolType proto) {
75     rtc::Thread* thread = rtc::Thread::Current();
76     if (proto == cricket::PROTO_UDP) {
77       server_.AddInternalSocket(rtc::AsyncUDPSocket::Create(
78           thread->socketserver(), int_addr), proto);
79     } else if (proto == cricket::PROTO_TCP) {
80       // For TCP we need to create a server socket which can listen for incoming
81       // new connections.
82       rtc::AsyncSocket* socket =
83           thread->socketserver()->CreateAsyncSocket(SOCK_STREAM);
84       socket->Bind(int_addr);
85       socket->Listen(5);
86       server_.AddInternalServerSocket(socket, proto);
87     }
88   }
89 
90   // Finds the first allocation in the server allocation map with a source
91   // ip and port matching the socket address provided.
FindAllocation(const rtc::SocketAddress & src)92   TurnServerAllocation* FindAllocation(const rtc::SocketAddress& src) {
93     const TurnServer::AllocationMap& map = server_.allocations();
94     for (TurnServer::AllocationMap::const_iterator it = map.begin();
95         it != map.end(); ++it) {
96       if (src == it->first.src()) {
97         return it->second;
98       }
99     }
100     return NULL;
101   }
102 
103  private:
104   // For this test server, succeed if the password is the same as the username.
105   // Obviously, do not use this in a production environment.
GetKey(const std::string & username,const std::string & realm,std::string * key)106   virtual bool GetKey(const std::string& username, const std::string& realm,
107                       std::string* key) {
108     return ComputeStunCredentialHash(username, realm, username, key);
109   }
110 
111   TurnServer server_;
112 };
113 
114 }  // namespace cricket
115 
116 #endif  // WEBRTC_P2P_BASE_TESTTURNSERVER_H_
117