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