proxy_service_factory.cc revision c5cede9ae108bb15f6b7a8aea21c7e1fefa2834c 
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#if !defined(OS_IOS)
34#include "net/proxy/proxy_resolver_v8.h"
35#endif
36
37using content::BrowserThread;
38
39// static
40net::ProxyConfigService* ProxyServiceFactory::CreateProxyConfigService(
41    PrefProxyConfigTracker* tracker) {
42  // The linux gconf-based proxy settings getter relies on being initialized
43  // from the UI thread.
44  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
45
46  scoped_ptr<net::ProxyConfigService> base_service;
47
48#if !defined(OS_CHROMEOS)
49  // On ChromeOS, base service is NULL; chromeos::ProxyConfigServiceImpl
50  // determines the effective proxy config to take effect in the network layer,
51  // be it from prefs or system (which is network shill on chromeos).
52
53  // For other platforms, create a baseline service that provides proxy
54  // configuration in case nothing is configured through prefs (Note: prefs
55  // include command line and configuration policy).
56
57  // TODO(port): the IO and FILE message loops are only used by Linux.  Can
58  // that code be moved to chrome/browser instead of being in net, so that it
59  // can use BrowserThread instead of raw MessageLoop pointers? See bug 25354.
60  base_service.reset(net::ProxyService::CreateSystemProxyConfigService(
61      BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO).get(),
62      BrowserThread::UnsafeGetMessageLoopForThread(BrowserThread::FILE)));
63#endif  // !defined(OS_CHROMEOS)
64
65  return tracker->CreateTrackingProxyConfigService(base_service.Pass())
66      .release();
67}
68
69// static
70PrefProxyConfigTracker*
71ProxyServiceFactory::CreatePrefProxyConfigTrackerOfProfile(
72    PrefService* profile_prefs,
73    PrefService* local_state_prefs) {
74#if defined(OS_CHROMEOS)
75  return new chromeos::ProxyConfigServiceImpl(profile_prefs, local_state_prefs);
76#else
77  return new PrefProxyConfigTrackerImpl(profile_prefs);
78#endif  // defined(OS_CHROMEOS)
79}
80
81// static
82PrefProxyConfigTracker*
83ProxyServiceFactory::CreatePrefProxyConfigTrackerOfLocalState(
84    PrefService* local_state_prefs) {
85#if defined(OS_CHROMEOS)
86  return new chromeos::ProxyConfigServiceImpl(NULL, local_state_prefs);
87#else
88  return new PrefProxyConfigTrackerImpl(local_state_prefs);
89#endif  // defined(OS_CHROMEOS)
90}
91
92// static
93net::ProxyService* ProxyServiceFactory::CreateProxyService(
94    net::NetLog* net_log,
95    net::URLRequestContext* context,
96    net::NetworkDelegate* network_delegate,
97    net::ProxyConfigService* proxy_config_service,
98    const CommandLine& command_line,
99    bool quick_check_enabled) {
100  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
101
102#if defined(OS_IOS)
103  bool use_v8 = false;
104#else
105  bool use_v8 = !command_line.HasSwitch(switches::kWinHttpProxyResolver);
106  if (use_v8 && command_line.HasSwitch(switches::kSingleProcess)) {
107    // See the note about V8 multithreading in net/proxy/proxy_resolver_v8.h
108    // to understand why we have this limitation.
109    LOG(ERROR) << "Cannot use V8 Proxy resolver in single process mode.";
110    use_v8 = false;  // Fallback to non-v8 implementation.
111  }
112#endif  // defined(OS_IOS)
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::ProxyResolverV8::EnsureIsolateCreated();
136
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    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  proxy_service->set_quick_check_enabled(quick_check_enabled);
162
163  return proxy_service;
164}
165