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/strings/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_impl.h"
  13 #include "chrome/common/chrome_switches.h"
  14 #include "chrome/common/pref_names.h"
  15 #include "content/public/browser/browser_thread.h"
  16 #include "net/base/net_log.h"
  17 #include "net/proxy/dhcp_proxy_script_fetcher_factory.h"
  18 #include "net/proxy/proxy_config_service.h"
  19 #include "net/proxy/proxy_script_fetcher_impl.h"
  20 #include "net/proxy/proxy_service.h"
  21 #include "net/proxy/proxy_service_v8.h"
  22 #include "net/url_request/url_request_context.h"
  23
  24 #if defined(OS_CHROMEOS)
  25 #include "chrome/browser/chromeos/proxy_config_service_impl.h"
  26 #include "chromeos/network/dhcp_proxy_script_fetcher_chromeos.h"
  27 #endif  // defined(OS_CHROMEOS)
  28
  29 #if defined(OS_WIN)
  30 #include "win8/util/win8_util.h"
  31 #endif
  32
  33 using content::BrowserThread;
  34
  35 // static
  36 net::ProxyConfigService* ProxyServiceFactory::CreateProxyConfigService(
  37     PrefProxyConfigTracker* tracker) {
  38   // The linux gconf-based proxy settings getter relies on being initialized
  39   // from the UI thread.
  40   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
  41
  42   scoped_ptr<net::ProxyConfigService> base_service;
  43
  44 #if !defined(OS_CHROMEOS)
  45   // On ChromeOS, base service is NULL; chromeos::ProxyConfigServiceImpl
  46   // determines the effective proxy config to take effect in the network layer,
  47   // be it from prefs or system (which is network shill on chromeos).
  48
  49   // For other platforms, create a baseline service that provides proxy
  50   // configuration in case nothing is configured through prefs (Note: prefs
  51   // include command line and configuration policy).
  52
  53   // TODO(port): the IO and FILE message loops are only used by Linux.  Can
  54   // that code be moved to chrome/browser instead of being in net, so that it
  55   // can use BrowserThread instead of raw MessageLoop pointers? See bug 25354.
  56   base_service.reset(net::ProxyService::CreateSystemProxyConfigService(
  57       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO).get(),
  58       BrowserThread::UnsafeGetMessageLoopForThread(BrowserThread::FILE)));
  59 #endif  // !defined(OS_CHROMEOS)
  60
  61   return tracker->CreateTrackingProxyConfigService(base_service.Pass())
  62       .release();
  63 }
  64
  65 // static
  66 PrefProxyConfigTracker*
  67 ProxyServiceFactory::CreatePrefProxyConfigTrackerOfProfile(
  68     PrefService* profile_prefs,
  69     PrefService* local_state_prefs) {
  70 #if defined(OS_CHROMEOS)
  71   return new chromeos::ProxyConfigServiceImpl(profile_prefs, local_state_prefs);
  72 #else
  73   return new PrefProxyConfigTrackerImpl(profile_prefs);
  74 #endif  // defined(OS_CHROMEOS)
  75 }
  76
  77 // static
  78 PrefProxyConfigTracker*
  79 ProxyServiceFactory::CreatePrefProxyConfigTrackerOfLocalState(
  80     PrefService* local_state_prefs) {
  81 #if defined(OS_CHROMEOS)
  82   return new chromeos::ProxyConfigServiceImpl(NULL, local_state_prefs);
  83 #else
  84   return new PrefProxyConfigTrackerImpl(local_state_prefs);
  85 #endif  // defined(OS_CHROMEOS)
  86 }
  87
  88 // static
  89 net::ProxyService* ProxyServiceFactory::CreateProxyService(
  90     net::NetLog* net_log,
  91     net::URLRequestContext* context,
  92     net::NetworkDelegate* network_delegate,
  93     net::ProxyConfigService* proxy_config_service,
  94     const CommandLine& command_line,
  95     bool quick_check_enabled) {
  96   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
  97
  98 #if defined(OS_IOS)
  99   bool use_v8 = false;
 100 #else
 101   bool use_v8 = !command_line.HasSwitch(switches::kWinHttpProxyResolver);
 102   if (use_v8 && command_line.HasSwitch(switches::kSingleProcess)) {
 103     // See the note about V8 multithreading in net/proxy/proxy_resolver_v8.h
 104     // to understand why we have this limitation.
 105     LOG(ERROR) << "Cannot use V8 Proxy resolver in single process mode.";
 106     use_v8 = false;  // Fallback to non-v8 implementation.
 107   }
 108 #endif  // defined(OS_IOS)
 109
 110 #if defined(OS_WIN)
 111   // Crashes. http://crbug.com/266838
 112   if (use_v8 && win8::IsSingleWindowMetroMode())
 113     use_v8 = false;
 114 #endif
 115
 116   size_t num_pac_threads = 0u;  // Use default number of threads.
 117
 118   // Check the command line for an override on the number of proxy resolver
 119   // threads to use.
 120   if (command_line.HasSwitch(switches::kNumPacThreads)) {
 121     std::string s = command_line.GetSwitchValueASCII(switches::kNumPacThreads);
 122
 123     // Parse the switch (it should be a positive integer formatted as decimal).
 124     int n;
 125     if (base::StringToInt(s, &n) && n > 0) {
 126       num_pac_threads = static_cast<size_t>(n);
 127     } else {
 128       LOG(ERROR) << "Invalid switch for number of PAC threads: " << s;
 129     }
 130   }
 131
 132   net::ProxyService* proxy_service = NULL;
 133   if (use_v8) {
 134 #if defined(OS_IOS)
 135     NOTREACHED();
 136 #else
 137     net::DhcpProxyScriptFetcher* dhcp_proxy_script_fetcher;
 138 #if defined(OS_CHROMEOS)
 139     dhcp_proxy_script_fetcher =
 140         new chromeos::DhcpProxyScriptFetcherChromeos(context);
 141 #else
 142     net::DhcpProxyScriptFetcherFactory dhcp_factory;
 143     if (command_line.HasSwitch(switches::kDisableDhcpWpad))
 144       dhcp_factory.set_enabled(false);
 145     dhcp_proxy_script_fetcher = dhcp_factory.Create(context);
 146 #endif
 147
 148     proxy_service = net::CreateProxyServiceUsingV8ProxyResolver(
 149         proxy_config_service,
 150         new net::ProxyScriptFetcherImpl(context),
 151         dhcp_proxy_script_fetcher,
 152         context->host_resolver(),
 153         net_log,
 154         network_delegate);
 155 #endif  // defined(OS_IOS)
 156   } else {
 157     proxy_service = net::ProxyService::CreateUsingSystemProxyResolver(
 158         proxy_config_service,
 159         num_pac_threads,
 160         net_log);
 161   }
 162
 163   proxy_service->set_quick_check_enabled(quick_check_enabled);
 164
 165   return proxy_service;
 166 }