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      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 
     38 using namespace cricket;
     39 
     40 static const talk_base::SocketAddress server_addr("99.99.99.1", 3478);
     41 static const talk_base::SocketAddress client_addr("1.2.3.4", 1234);
     42 
     43 class 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 
     85 TEST_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 
    112 TEST_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