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      1 /*
      2  *  Copyright 2004 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_BASE_AUTODETECTPROXY_H_
     12 #define WEBRTC_BASE_AUTODETECTPROXY_H_
     13 
     14 #include <string>
     15 
     16 #include "webrtc/base/constructormagic.h"
     17 #include "webrtc/base/cryptstring.h"
     18 #include "webrtc/base/proxydetect.h"
     19 #include "webrtc/base/proxyinfo.h"
     20 #include "webrtc/base/signalthread.h"
     21 
     22 namespace rtc {
     23 
     24 ///////////////////////////////////////////////////////////////////////////////
     25 // AutoDetectProxy
     26 ///////////////////////////////////////////////////////////////////////////////
     27 
     28 class AsyncResolverInterface;
     29 class AsyncSocket;
     30 
     31 class AutoDetectProxy : public SignalThread {
     32  public:
     33   explicit AutoDetectProxy(const std::string& user_agent);
     34 
     35   const ProxyInfo& proxy() const { return proxy_; }
     36 
     37   void set_server_url(const std::string& url) {
     38     server_url_ = url;
     39   }
     40   void set_proxy(const SocketAddress& proxy) {
     41     proxy_.type = PROXY_UNKNOWN;
     42     proxy_.address = proxy;
     43   }
     44   void set_auth_info(bool use_auth, const std::string& username,
     45                      const CryptString& password) {
     46     if (use_auth) {
     47       proxy_.username = username;
     48       proxy_.password = password;
     49     }
     50   }
     51   // Default implementation of GetProxySettingsForUrl. Override for special
     52   // implementation.
     53   virtual bool GetProxyForUrl(const char* agent,
     54                               const char* url,
     55                               rtc::ProxyInfo* proxy);
     56   enum { MSG_TIMEOUT = SignalThread::ST_MSG_FIRST_AVAILABLE,
     57          MSG_UNRESOLVABLE,
     58          ADP_MSG_FIRST_AVAILABLE};
     59 
     60  protected:
     61   ~AutoDetectProxy() override;
     62 
     63   // SignalThread Interface
     64   void DoWork() override;
     65   void OnMessage(Message* msg) override;
     66 
     67   void Next();
     68   void Complete(ProxyType type);
     69 
     70   void OnConnectEvent(AsyncSocket * socket);
     71   void OnReadEvent(AsyncSocket * socket);
     72   void OnCloseEvent(AsyncSocket * socket, int error);
     73   void OnResolveResult(AsyncResolverInterface* resolver);
     74   bool DoConnect();
     75 
     76  private:
     77   std::string agent_;
     78   std::string server_url_;
     79   ProxyInfo proxy_;
     80   AsyncResolverInterface* resolver_;
     81   AsyncSocket* socket_;
     82   int next_;
     83 
     84   RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(AutoDetectProxy);
     85 };
     86 
     87 }  // namespace rtc
     88 
     89 #endif  // WEBRTC_BASE_AUTODETECTPROXY_H_
     90