proxy_service_factory.cc revision 7d4cd473f85ac64c3747c96c277f9e506a0d2246 
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.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#endif  // defined(OS_CHROMEOS)
26
27using content::BrowserThread;
28
29// static
30ChromeProxyConfigService* ProxyServiceFactory::CreateProxyConfigService() {
31  // The linux gconf-based proxy settings getter relies on being initialized
32  // from the UI thread.
33  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
34
35  net::ProxyConfigService* base_service = NULL;
36
37#if !defined(OS_CHROMEOS)
38  // On ChromeOS, base service is NULL; chromeos::ProxyConfigServiceImpl
39  // determines the effective proxy config to take effect in the network layer,
40  // be it from prefs or system (which is network shill on chromeos).
41
42  // For other platforms, create a baseline service that provides proxy
43  // configuration in case nothing is configured through prefs (Note: prefs
44  // include command line and configuration policy).
45
46  // TODO(port): the IO and FILE message loops are only used by Linux.  Can
47  // that code be moved to chrome/browser instead of being in net, so that it
48  // can use BrowserThread instead of raw MessageLoop pointers? See bug 25354.
49  base_service = net::ProxyService::CreateSystemProxyConfigService(
50      BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO).get(),
51      BrowserThread::UnsafeGetMessageLoopForThread(BrowserThread::FILE));
52#endif  // !defined(OS_CHROMEOS)
53
54  return new ChromeProxyConfigService(base_service);
55}
56
57#if defined(OS_CHROMEOS)
58// static
59chromeos::ProxyConfigServiceImpl*
60    ProxyServiceFactory::CreatePrefProxyConfigTracker(
61        PrefService* pref_service) {
62  return new chromeos::ProxyConfigServiceImpl(pref_service);
63}
64#else
65// static
66PrefProxyConfigTrackerImpl* ProxyServiceFactory::CreatePrefProxyConfigTracker(
67    PrefService* pref_service) {
68  return new PrefProxyConfigTrackerImpl(pref_service);
69}
70#endif  // defined(OS_CHROMEOS)
71
72// static
73net::ProxyService* ProxyServiceFactory::CreateProxyService(
74    net::NetLog* net_log,
75    net::URLRequestContext* context,
76    net::NetworkDelegate* network_delegate,
77    net::ProxyConfigService* proxy_config_service,
78    const CommandLine& command_line) {
79  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
80
81#if defined(OS_IOS)
82  bool use_v8 = false;
83#else
84  bool use_v8 = !command_line.HasSwitch(switches::kWinHttpProxyResolver);
85  if (use_v8 && command_line.HasSwitch(switches::kSingleProcess)) {
86    // See the note about V8 multithreading in net/proxy/proxy_resolver_v8.h
87    // to understand why we have this limitation.
88    LOG(ERROR) << "Cannot use V8 Proxy resolver in single process mode.";
89    use_v8 = false;  // Fallback to non-v8 implementation.
90  }
91#endif  // defined(OS_IOS)
92
93  size_t num_pac_threads = 0u;  // Use default number of threads.
94
95  // Check the command line for an override on the number of proxy resolver
96  // threads to use.
97  if (command_line.HasSwitch(switches::kNumPacThreads)) {
98    std::string s = command_line.GetSwitchValueASCII(switches::kNumPacThreads);
99
100    // Parse the switch (it should be a positive integer formatted as decimal).
101    int n;
102    if (base::StringToInt(s, &n) && n > 0) {
103      num_pac_threads = static_cast<size_t>(n);
104    } else {
105      LOG(ERROR) << "Invalid switch for number of PAC threads: " << s;
106    }
107  }
108
109  net::ProxyService* proxy_service = NULL;
110  if (use_v8) {
111#if defined(OS_IOS)
112    NOTREACHED();
113#else
114    net::DhcpProxyScriptFetcherFactory dhcp_factory;
115    if (command_line.HasSwitch(switches::kDisableDhcpWpad)) {
116      dhcp_factory.set_enabled(false);
117    }
118
119    proxy_service = net::CreateProxyServiceUsingV8ProxyResolver(
120        proxy_config_service,
121        new net::ProxyScriptFetcherImpl(context),
122        dhcp_factory.Create(context),
123        context->host_resolver(),
124        net_log,
125        network_delegate);
126#endif  // defined(OS_IOS)
127  } else {
128    proxy_service = net::ProxyService::CreateUsingSystemProxyResolver(
129        proxy_config_service,
130        num_pac_threads,
131        net_log);
132  }
133
134  return proxy_service;
135}
136