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      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 #include <iostream>  // NOLINT
     12 
     13 #include "webrtc/p2p/base/basicpacketsocketfactory.h"
     14 #include "webrtc/p2p/base/turnserver.h"
     15 #include "webrtc/base/asyncudpsocket.h"
     16 #include "webrtc/base/optionsfile.h"
     17 #include "webrtc/base/stringencode.h"
     18 #include "webrtc/base/thread.h"
     19 
     20 static const char kSoftware[] = "libjingle TurnServer";
     21 
     22 class TurnFileAuth : public cricket::TurnAuthInterface {
     23  public:
     24   explicit TurnFileAuth(const std::string& path) : file_(path) {
     25     file_.Load();
     26   }
     27   virtual bool GetKey(const std::string& username, const std::string& realm,
     28                       std::string* key) {
     29     // File is stored as lines of <username>=<HA1>.
     30     // Generate HA1 via "echo -n "<username>:<realm>:<password>" | md5sum"
     31     std::string hex;
     32     bool ret = file_.GetStringValue(username, &hex);
     33     if (ret) {
     34       char buf[32];
     35       size_t len = rtc::hex_decode(buf, sizeof(buf), hex);
     36       *key = std::string(buf, len);
     37     }
     38     return ret;
     39   }
     40  private:
     41   rtc::OptionsFile file_;
     42 };
     43 
     44 int main(int argc, char **argv) {
     45   if (argc != 5) {
     46     std::cerr << "usage: turnserver int-addr ext-ip realm auth-file"
     47               << std::endl;
     48     return 1;
     49   }
     50 
     51   rtc::SocketAddress int_addr;
     52   if (!int_addr.FromString(argv[1])) {
     53     std::cerr << "Unable to parse IP address: " << argv[1] << std::endl;
     54     return 1;
     55   }
     56 
     57   rtc::IPAddress ext_addr;
     58   if (!IPFromString(argv[2], &ext_addr)) {
     59     std::cerr << "Unable to parse IP address: " << argv[2] << std::endl;
     60     return 1;
     61   }
     62 
     63   rtc::Thread* main = rtc::Thread::Current();
     64   rtc::AsyncUDPSocket* int_socket =
     65       rtc::AsyncUDPSocket::Create(main->socketserver(), int_addr);
     66   if (!int_socket) {
     67     std::cerr << "Failed to create a UDP socket bound at"
     68               << int_addr.ToString() << std::endl;
     69     return 1;
     70   }
     71 
     72   cricket::TurnServer server(main);
     73   TurnFileAuth auth(argv[4]);
     74   server.set_realm(argv[3]);
     75   server.set_software(kSoftware);
     76   server.set_auth_hook(&auth);
     77   server.AddInternalSocket(int_socket, cricket::PROTO_UDP);
     78   server.SetExternalSocketFactory(new rtc::BasicPacketSocketFactory(),
     79                                   rtc::SocketAddress(ext_addr, 0));
     80 
     81   std::cout << "Listening internally at " << int_addr.ToString() << std::endl;
     82 
     83   main->Run();
     84   return 0;
     85 }
     86