chrome/browser/net/proxy_service_factory.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/net/proxy_service_factory.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/string_number_conversions.h"
   9 #include "base/threading/thread.h"
  10 #include "chrome/browser/browser_process.h"
  11 #include "chrome/browser/io_thread.h"
  12 #include "chrome/browser/net/pref_proxy_config_tracker.h"
  13 #include "chrome/common/chrome_switches.h"
  14 #include "content/public/browser/browser_thread.h"
  15 #include "net/base/net_log.h"
  16 #include "net/proxy/dhcp_proxy_script_fetcher_factory.h"
  17 #include "net/proxy/proxy_config_service.h"
  18 #include "net/proxy/proxy_script_fetcher_impl.h"
  19 #include "net/proxy/proxy_service.h"
  20 #include "net/proxy/proxy_service_v8.h"
  21 #include "net/url_request/url_request_context.h"
  22
  23 #if defined(OS_CHROMEOS)
  24 #include "chrome/browser/chromeos/proxy_config_service_impl.h"
  25 #endif  // defined(OS_CHROMEOS)
  26
  27 using content::BrowserThread;
  28
  29 // static
  30 ChromeProxyConfigService* ProxyServiceFactory::CreateProxyConfigService(
  31     bool wait_for_first_update) {
  32   // The linux gconf-based proxy settings getter relies on being initialized
  33   // from the UI thread.
  34   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  35
  36   net::ProxyConfigService* base_service = NULL;
  37
  38 #if !defined(OS_CHROMEOS)
  39   // On ChromeOS, base service is NULL; chromeos::ProxyConfigServiceImpl
  40   // determines the effective proxy config to take effect in the network layer,
  41   // be it from prefs or system (which is network shill on chromeos).
  42
  43   // For other platforms, create a baseline service that provides proxy
  44   // configuration in case nothing is configured through prefs (Note: prefs
  45   // include command line and configuration policy).
  46
  47   // TODO(port): the IO and FILE message loops are only used by Linux.  Can
  48   // that code be moved to chrome/browser instead of being in net, so that it
  49   // can use BrowserThread instead of raw MessageLoop pointers? See bug 25354.
  50   base_service = net::ProxyService::CreateSystemProxyConfigService(
  51       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO),
  52       BrowserThread::UnsafeGetMessageLoopForThread(BrowserThread::FILE));
  53 #endif  // !defined(OS_CHROMEOS)
  54
  55   return new ChromeProxyConfigService(base_service, wait_for_first_update);
  56 }
  57
  58 #if defined(OS_CHROMEOS)
  59 // static
  60 chromeos::ProxyConfigServiceImpl*
  61     ProxyServiceFactory::CreatePrefProxyConfigTracker(
  62         PrefService* pref_service) {
  63   return new chromeos::ProxyConfigServiceImpl(pref_service);
  64 }
  65 #else
  66 // static
  67 PrefProxyConfigTrackerImpl* ProxyServiceFactory::CreatePrefProxyConfigTracker(
  68     PrefService* pref_service) {
  69   return new PrefProxyConfigTrackerImpl(pref_service);
  70 }
  71 #endif  // defined(OS_CHROMEOS)
  72
  73 // static
  74 net::ProxyService* ProxyServiceFactory::CreateProxyService(
  75     net::NetLog* net_log,
  76     net::URLRequestContext* context,
  77     net::ProxyConfigService* proxy_config_service,
  78     const CommandLine& command_line) {
  79   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
  80
  81 #if defined(OS_IOS)
  82   bool use_v8 = false;
  83 #else
  84   bool use_v8 = !command_line.HasSwitch(switches::kWinHttpProxyResolver);
  85   if (use_v8 && command_line.HasSwitch(switches::kSingleProcess)) {
  86     // See the note about V8 multithreading in net/proxy/proxy_resolver_v8.h
  87     // to understand why we have this limitation.
  88     LOG(ERROR) << "Cannot use V8 Proxy resolver in single process mode.";
  89     use_v8 = false;  // Fallback to non-v8 implementation.
  90   }
  91 #endif  // defined(OS_IOS)
  92
  93   size_t num_pac_threads = 0u;  // Use default number of threads.
  94
  95   // Check the command line for an override on the number of proxy resolver
  96   // threads to use.
  97   if (command_line.HasSwitch(switches::kNumPacThreads)) {
  98     std::string s = command_line.GetSwitchValueASCII(switches::kNumPacThreads);
  99
 100     // Parse the switch (it should be a positive integer formatted as decimal).
 101     int n;
 102     if (base::StringToInt(s, &n) && n > 0) {
 103       num_pac_threads = static_cast<size_t>(n);
 104     } else {
 105       LOG(ERROR) << "Invalid switch for number of PAC threads: " << s;
 106     }
 107   }
 108
 109   net::ProxyService* proxy_service = NULL;
 110   if (use_v8) {
 111 #if defined(OS_IOS)
 112     NOTREACHED();
 113 #else
 114     net::DhcpProxyScriptFetcherFactory dhcp_factory;
 115     if (command_line.HasSwitch(switches::kDisableDhcpWpad)) {
 116       dhcp_factory.set_enabled(false);
 117     }
 118
 119     proxy_service = net::CreateProxyServiceUsingV8ProxyResolver(
 120         proxy_config_service,
 121         num_pac_threads,
 122         new net::ProxyScriptFetcherImpl(context),
 123         dhcp_factory.Create(context),
 124         context->host_resolver(),
 125         net_log,
 126         context->network_delegate());
 127 #endif  // defined(OS_IOS)
 128   } else {
 129     proxy_service = net::ProxyService::CreateUsingSystemProxyResolver(
 130         proxy_config_service,
 131         num_pac_threads,
 132         net_log);
 133   }
 134
 135   return proxy_service;
 136 }