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      1 /*
      2  * libjingle
      3  * Copyright 2006, 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 "talk/base/httprequest.h"
     29 
     30 #include "talk/base/common.h"
     31 #include "talk/base/firewallsocketserver.h"
     32 #include "talk/base/httpclient.h"
     33 #include "talk/base/logging.h"
     34 #include "talk/base/physicalsocketserver.h"
     35 #include "talk/base/socketadapters.h"
     36 #include "talk/base/socketpool.h"
     37 #include "talk/base/ssladapter.h"
     38 
     39 using namespace talk_base;
     40 
     41 ///////////////////////////////////////////////////////////////////////////////
     42 // HttpMonitor
     43 ///////////////////////////////////////////////////////////////////////////////
     44 
     45 HttpMonitor::HttpMonitor(SocketServer *ss) {
     46   ASSERT(Thread::Current() != NULL);
     47   ss_ = ss;
     48   reset();
     49 }
     50 
     51 void HttpMonitor::Connect(HttpClient *http) {
     52   http->SignalHttpClientComplete.connect(this,
     53     &HttpMonitor::OnHttpClientComplete);
     54 }
     55 
     56 void HttpMonitor::OnHttpClientComplete(HttpClient * http, HttpErrorType error) {
     57   complete_ = true;
     58   error_ = error;
     59   ss_->WakeUp();
     60 }
     61 
     62 ///////////////////////////////////////////////////////////////////////////////
     63 // HttpRequest
     64 ///////////////////////////////////////////////////////////////////////////////
     65 
     66 const int kDefaultHTTPTimeout = 30 * 1000; // 30 sec
     67 
     68 HttpRequest::HttpRequest(const std::string &user_agent)
     69     : firewall_(0), port_(80), secure_(false),
     70       timeout_(kDefaultHTTPTimeout), fail_redirect_(false),
     71       client_(user_agent.c_str(), NULL), error_(HE_NONE) {
     72 }
     73 
     74 void HttpRequest::Send() {
     75   // TODO: Rewrite this to use the thread's native socket server, and a more
     76   // natural flow?
     77 
     78   PhysicalSocketServer physical;
     79   SocketServer * ss = &physical;
     80   if (firewall_) {
     81     ss = new FirewallSocketServer(ss, firewall_);
     82   }
     83 
     84   SslSocketFactory factory(ss, client_.agent());
     85   factory.SetProxy(proxy_);
     86   if (secure_)
     87     factory.UseSSL(host_.c_str());
     88 
     89   //factory.SetLogging("HttpRequest");
     90 
     91   ReuseSocketPool pool(&factory);
     92   client_.set_pool(&pool);
     93 
     94   bool transparent_proxy = (port_ == 80) && ((proxy_.type == PROXY_HTTPS) ||
     95                            (proxy_.type == PROXY_UNKNOWN));
     96 
     97   if (transparent_proxy) {
     98     client_.set_proxy(proxy_);
     99   }
    100   client_.set_fail_redirect(fail_redirect_);
    101 
    102   SocketAddress server(host_, port_);
    103   client_.set_server(server);
    104 
    105   LOG(LS_INFO) << "HttpRequest start: " << host_ + client_.request().path;
    106 
    107   HttpMonitor monitor(ss);
    108   monitor.Connect(&client_);
    109   client_.start();
    110   ss->Wait(timeout_, true);
    111   if (!monitor.done()) {
    112     LOG(LS_INFO) << "HttpRequest request timed out";
    113     client_.reset();
    114     return;
    115   }
    116 
    117   set_error(monitor.error());
    118   if (error_) {
    119     LOG(LS_INFO) << "HttpRequest request error: " << error_;
    120     return;
    121   }
    122 
    123   std::string value;
    124   if (client_.response().hasHeader(HH_LOCATION, &value)) {
    125     response_redirect_ = value.c_str();
    126   }
    127 }
    128