1/*
2 * libjingle
3 * Copyright 2004 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 <string>
29
30#include "talk/base/gunit.h"
31#include "talk/base/logging.h"
32#include "talk/base/physicalsocketserver.h"
33#include "talk/base/virtualsocketserver.h"
34#include "talk/base/testclient.h"
35#include "talk/base/thread.h"
36#include "talk/p2p/base/stunserver.h"
37
38using namespace cricket;
39
40static const talk_base::SocketAddress server_addr("99.99.99.1", 3478);
41static const talk_base::SocketAddress client_addr("1.2.3.4", 1234);
42
43class StunServerTest : public testing::Test {
44 public:
45  StunServerTest()
46    : pss_(new talk_base::PhysicalSocketServer),
47      ss_(new talk_base::VirtualSocketServer(pss_.get())),
48      worker_(ss_.get()) {
49  }
50  virtual void SetUp() {
51    server_.reset(new StunServer(
52        talk_base::AsyncUDPSocket::Create(ss_.get(), server_addr)));
53    client_.reset(new talk_base::TestClient(
54        talk_base::AsyncUDPSocket::Create(ss_.get(), client_addr)));
55
56    worker_.Start();
57  }
58  void Send(const StunMessage& msg) {
59    talk_base::ByteBuffer buf;
60    msg.Write(&buf);
61    Send(buf.Data(), static_cast<int>(buf.Length()));
62  }
63  void Send(const char* buf, int len) {
64    client_->SendTo(buf, len, server_addr);
65  }
66  StunMessage* Receive() {
67    StunMessage* msg = NULL;
68    talk_base::TestClient::Packet* packet = client_->NextPacket();
69    if (packet) {
70      talk_base::ByteBuffer buf(packet->buf, packet->size);
71      msg = new StunMessage();
72      msg->Read(&buf);
73      delete packet;
74    }
75    return msg;
76  }
77 private:
78  talk_base::scoped_ptr<talk_base::PhysicalSocketServer> pss_;
79  talk_base::scoped_ptr<talk_base::VirtualSocketServer> ss_;
80  talk_base::Thread worker_;
81  talk_base::scoped_ptr<StunServer> server_;
82  talk_base::scoped_ptr<talk_base::TestClient> client_;
83};
84
85TEST_F(StunServerTest, TestGood) {
86  StunMessage req;
87  std::string transaction_id = "0123456789ab";
88  req.SetType(STUN_BINDING_REQUEST);
89  req.SetTransactionID(transaction_id);
90  Send(req);
91
92  StunMessage* msg = Receive();
93  ASSERT_TRUE(msg != NULL);
94  EXPECT_EQ(STUN_BINDING_RESPONSE, msg->type());
95  EXPECT_EQ(req.transaction_id(), msg->transaction_id());
96
97  const StunAddressAttribute* mapped_addr =
98      msg->GetAddress(STUN_ATTR_MAPPED_ADDRESS);
99  EXPECT_TRUE(mapped_addr != NULL);
100  EXPECT_EQ(1, mapped_addr->family());
101  EXPECT_EQ(client_addr.port(), mapped_addr->port());
102  if (mapped_addr->ipaddr() != client_addr.ipaddr()) {
103    LOG(LS_WARNING) << "Warning: mapped IP ("
104                    << mapped_addr->ipaddr()
105                    << ") != local IP (" << client_addr.ipaddr()
106                    << ")";
107  }
108
109  delete msg;
110}
111
112TEST_F(StunServerTest, TestBad) {
113  const char* bad = "this is a completely nonsensical message whose only "
114                    "purpose is to make the parser go 'ack'.  it doesn't "
115                    "look anything like a normal stun message";
116  Send(bad, static_cast<int>(std::strlen(bad)));
117
118  StunMessage* msg = Receive();
119  ASSERT_TRUE(msg == NULL);
120}
121