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/common/chrome_switches.h"
  16 #include "components/proxy_config/pref_proxy_config_tracker_impl.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(
  98       profile_prefs,
  99       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO));
 100 #endif  // defined(OS_CHROMEOS)
 101 }
 102
 103 // static
 104 PrefProxyConfigTracker*
 105 ProxyServiceFactory::CreatePrefProxyConfigTrackerOfLocalState(
 106     PrefService* local_state_prefs) {
 107 #if defined(OS_CHROMEOS)
 108   return new chromeos::ProxyConfigServiceImpl(NULL, local_state_prefs);
 109 #else
 110   return new PrefProxyConfigTrackerImpl(
 111       local_state_prefs,
 112       BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO));
 113 #endif  // defined(OS_CHROMEOS)
 114 }
 115
 116 // static
 117 net::ProxyService* ProxyServiceFactory::CreateProxyService(
 118     net::NetLog* net_log,
 119     net::URLRequestContext* context,
 120     net::NetworkDelegate* network_delegate,
 121     net::ProxyConfigService* proxy_config_service,
 122     const base::CommandLine& command_line,
 123     bool quick_check_enabled) {
 124   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 125 #if defined(OS_IOS)
 126   bool use_v8 = false;
 127 #else
 128   bool use_v8 = !command_line.HasSwitch(switches::kWinHttpProxyResolver);
 129   // TODO(eroman): Figure out why this doesn't work in single-process mode.
 130   // Should be possible now that a private isolate is used.
 131   // http://crbug.com/474654
 132   if (use_v8 && command_line.HasSwitch(switches::kSingleProcess)) {
 133     LOG(ERROR) << "Cannot use V8 Proxy resolver in single process mode.";
 134     use_v8 = false;  // Fallback to non-v8 implementation.
 135   }
 136 #endif  // defined(OS_IOS)
 137
 138   size_t num_pac_threads = 0u;  // Use default number of threads.
 139
 140   // Check the command line for an override on the number of proxy resolver
 141   // threads to use.
 142   if (command_line.HasSwitch(switches::kNumPacThreads)) {
 143     std::string s = command_line.GetSwitchValueASCII(switches::kNumPacThreads);
 144
 145     // Parse the switch (it should be a positive integer formatted as decimal).
 146     int n;
 147     if (base::StringToInt(s, &n) && n > 0) {
 148       num_pac_threads = static_cast<size_t>(n);
 149     } else {
 150       LOG(ERROR) << "Invalid switch for number of PAC threads: " << s;
 151     }
 152   }
 153
 154   net::ProxyService* proxy_service = NULL;
 155   if (use_v8) {
 156 #if defined(OS_IOS)
 157     NOTREACHED();
 158 #else
 159     scoped_ptr<net::DhcpProxyScriptFetcher> dhcp_proxy_script_fetcher;
 160 #if defined(OS_CHROMEOS)
 161     dhcp_proxy_script_fetcher.reset(
 162         new chromeos::DhcpProxyScriptFetcherChromeos(context));
 163 #else
 164     net::DhcpProxyScriptFetcherFactory dhcp_factory;
 165     dhcp_proxy_script_fetcher = dhcp_factory.Create(context);
 166 #endif
 167
 168 #if !defined(OS_ANDROID)
 169     // In-process Mojo PAC can only be set on the command line, so its presence
 170     // should override other options.
 171     if (command_line.HasSwitch(switches::kV8PacMojoInProcess)) {
 172       proxy_service = net::CreateProxyServiceUsingMojoInProcess(
 173           proxy_config_service, new net::ProxyScriptFetcherImpl(context),
 174           dhcp_proxy_script_fetcher.Pass(), context->host_resolver(), net_log,
 175           network_delegate);
 176     } else if (EnableOutOfProcessV8Pac(command_line)) {
 177       proxy_service = net::CreateProxyServiceUsingMojoFactory(
 178           UtilityProcessMojoProxyResolverFactory::GetInstance(),
 179           proxy_config_service, new net::ProxyScriptFetcherImpl(context),
 180           dhcp_proxy_script_fetcher.Pass(), context->host_resolver(), net_log,
 181           network_delegate);
 182     }
 183 #endif  // !defined(OS_ANDROID)
 184
 185     if (!proxy_service) {
 186       proxy_service = net::CreateProxyServiceUsingV8ProxyResolver(
 187           proxy_config_service, new net::ProxyScriptFetcherImpl(context),
 188           dhcp_proxy_script_fetcher.Pass(), context->host_resolver(), net_log,
 189           network_delegate);
 190     }
 191 #endif  // defined(OS_IOS)
 192   } else {
 193     proxy_service = net::ProxyService::CreateUsingSystemProxyResolver(
 194         proxy_config_service,
 195         num_pac_threads,
 196         net_log);
 197   }
 198
 199   proxy_service->set_quick_check_enabled(quick_check_enabled);
 200
 201   return proxy_service;
 202 }