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 <string>
   8
   9 #include "base/command_line.h"
  10 #include "base/metrics/field_trial.h"
  11 #include "base/strings/string_number_conversions.h"
  12 #include "base/threading/thread.h"
  13 #include "chrome/browser/browser_process.h"
  14 #include "chrome/browser/io_thread.h"
  15 #include "chrome/browser/net/pref_proxy_config_tracker_impl.h"
  16 #include "chrome/common/chrome_switches.h"
  17 #include "content/public/browser/browser_thread.h"
  18 #include "net/log/net_log.h"
  19 #include "net/proxy/dhcp_proxy_script_fetcher_factory.h"
  20 #include "net/proxy/proxy_config_service.h"
  21 #include "net/proxy/proxy_script_fetcher_impl.h"
  22 #include "net/proxy/proxy_service.h"
  23 #include "net/proxy/proxy_service_v8.h"
  24 #include "net/url_request/url_request_context.h"
  25
  26 #if defined(OS_CHROMEOS)
  27 #include "chrome/browser/chromeos/proxy_config_service_impl.h"
  28 #include "chromeos/network/dhcp_proxy_script_fetcher_chromeos.h"
  29 #endif  // defined(OS_CHROMEOS)
  30
  31 #if !defined(OS_IOS)
  32 #include "net/proxy/proxy_resolver_v8.h"
  33 #endif
  34
  35 #if !defined(OS_IOS) && !defined(OS_ANDROID)
  36 #include "chrome/browser/net/utility_process_mojo_proxy_resolver_factory.h"
  37 #include "net/proxy/proxy_service_mojo.h"
  38 #endif
  39
  40 using content::BrowserThread;
  41
  42 namespace {
  43
  44 #if !defined(OS_ANDROID)
  45 bool EnableOutOfProcessV8Pac(const base::CommandLine& command_line) {
  46   const std::string group_name =
  47       base::FieldTrialList::FindFullName("OutOfProcessPac");
  48
  49   if (command_line.HasSwitch(switches::kDisableOutOfProcessPac))
  50     return false;
  51   if (command_line.HasSwitch(switches::kV8PacMojoOutOfProcess))
  52     return true;
  53   return group_name == "Enabled";
  54 }
  55 #endif  // !defined(OS_ANDROID)
  56
  57 }  // namespace
  58
  59 // static
  60 net::ProxyConfigService* ProxyServiceFactory::CreateProxyConfigService(
  61     PrefProxyConfigTracker* tracker) {
  62   // The linux gconf-based proxy settings getter relies on being initialized
  63   // from the UI thread.
  64   DCHECK_CURRENTLY_ON(BrowserThread::UI);
  65
  66   scoped_ptr<net::ProxyConfigService> base_service;
  67
  68 #if !defined(OS_CHROMEOS)
  69   // On ChromeOS, base service is NULL; chromeos::ProxyConfigServiceImpl
  70   // determines the effective proxy config to take effect in the network layer,
  71   // be it from prefs or system (which is network shill on chromeos).
  72
  73   // For other platforms, create a baseline service that provides proxy
  74   // configuration in case nothing is configured through prefs (Note: prefs
  75   // include command line and configuration policy).
  76
  77   // TODO(port): the IO and FILE message loops are only used by Linux.  Can
  78   // that code be moved to chrome/browser instead of being in net, so that it
  79   // can use BrowserThread instead of raw MessageLoop pointers? See bug 25354.
  80   base_service.reset(net::ProxyService::CreateSystemProxyConfigService(
  81       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO),
  82       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE)));
  83 #endif  // !defined(OS_CHROMEOS)
  84
  85   return tracker->CreateTrackingProxyConfigService(base_service.Pass())
  86       .release();
  87 }
  88
  89 // static
  90 PrefProxyConfigTracker*
  91 ProxyServiceFactory::CreatePrefProxyConfigTrackerOfProfile(
  92     PrefService* profile_prefs,
  93     PrefService* local_state_prefs) {
  94 #if defined(OS_CHROMEOS)
  95   return new chromeos::ProxyConfigServiceImpl(profile_prefs, local_state_prefs);
  96 #else
  97   return new PrefProxyConfigTrackerImpl(profile_prefs);
  98 #endif  // defined(OS_CHROMEOS)
  99 }
 100
 101 // static
 102 PrefProxyConfigTracker*
 103 ProxyServiceFactory::CreatePrefProxyConfigTrackerOfLocalState(
 104     PrefService* local_state_prefs) {
 105 #if defined(OS_CHROMEOS)
 106   return new chromeos::ProxyConfigServiceImpl(NULL, local_state_prefs);
 107 #else
 108   return new PrefProxyConfigTrackerImpl(local_state_prefs);
 109 #endif  // defined(OS_CHROMEOS)
 110 }
 111
 112 // static
 113 net::ProxyService* ProxyServiceFactory::CreateProxyService(
 114     net::NetLog* net_log,
 115     net::URLRequestContext* context,
 116     net::NetworkDelegate* network_delegate,
 117     net::ProxyConfigService* proxy_config_service,
 118     const base::CommandLine& command_line,
 119     bool quick_check_enabled) {
 120   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 121 #if defined(OS_IOS)
 122   bool use_v8 = false;
 123 #else
 124   bool use_v8 = !command_line.HasSwitch(switches::kWinHttpProxyResolver);
 125   // TODO(eroman): Figure out why this doesn't work in single-process mode.
 126   // Should be possible now that a private isolate is used.
 127   // http://crbug.com/474654
 128   if (use_v8 && command_line.HasSwitch(switches::kSingleProcess)) {
 129     LOG(ERROR) << "Cannot use V8 Proxy resolver in single process mode.";
 130     use_v8 = false;  // Fallback to non-v8 implementation.
 131   }
 132 #endif  // defined(OS_IOS)
 133
 134   size_t num_pac_threads = 0u;  // Use default number of threads.
 135
 136   // Check the command line for an override on the number of proxy resolver
 137   // threads to use.
 138   if (command_line.HasSwitch(switches::kNumPacThreads)) {
 139     std::string s = command_line.GetSwitchValueASCII(switches::kNumPacThreads);
 140
 141     // Parse the switch (it should be a positive integer formatted as decimal).
 142     int n;
 143     if (base::StringToInt(s, &n) && n > 0) {
 144       num_pac_threads = static_cast<size_t>(n);
 145     } else {
 146       LOG(ERROR) << "Invalid switch for number of PAC threads: " << s;
 147     }
 148   }
 149
 150   net::ProxyService* proxy_service = NULL;
 151   if (use_v8) {
 152 #if defined(OS_IOS)
 153     NOTREACHED();
 154 #else
 155     net::DhcpProxyScriptFetcher* dhcp_proxy_script_fetcher;
 156 #if defined(OS_CHROMEOS)
 157     dhcp_proxy_script_fetcher =
 158         new chromeos::DhcpProxyScriptFetcherChromeos(context);
 159 #else
 160     net::DhcpProxyScriptFetcherFactory dhcp_factory;
 161     dhcp_proxy_script_fetcher = dhcp_factory.Create(context);
 162 #endif
 163
 164 #if !defined(OS_ANDROID)
 165     // In-process Mojo PAC can only be set on the command line, so its presence
 166     // should override other options.
 167     if (command_line.HasSwitch(switches::kV8PacMojoInProcess)) {
 168       proxy_service = net::CreateProxyServiceUsingMojoInProcess(
 169           proxy_config_service, new net::ProxyScriptFetcherImpl(context),
 170           dhcp_proxy_script_fetcher, context->host_resolver(), net_log,
 171           network_delegate);
 172     } else if (EnableOutOfProcessV8Pac(command_line)) {
 173       proxy_service = net::CreateProxyServiceUsingMojoFactory(
 174           UtilityProcessMojoProxyResolverFactory::GetInstance(),
 175           proxy_config_service, new net::ProxyScriptFetcherImpl(context),
 176           dhcp_proxy_script_fetcher, context->host_resolver(), net_log,
 177           network_delegate);
 178     }
 179 #endif  // !defined(OS_ANDROID)
 180
 181     if (!proxy_service) {
 182       proxy_service = net::CreateProxyServiceUsingV8ProxyResolver(
 183           proxy_config_service, new net::ProxyScriptFetcherImpl(context),
 184           dhcp_proxy_script_fetcher, context->host_resolver(), net_log,
 185           network_delegate);
 186     }
 187 #endif  // defined(OS_IOS)
 188   } else {
 189     proxy_service = net::ProxyService::CreateUsingSystemProxyResolver(
 190         proxy_config_service,
 191         num_pac_threads,
 192         net_log);
 193   }
 194
 195   proxy_service->set_quick_check_enabled(quick_check_enabled);
 196
 197   return proxy_service;
 198 }