proxy_service_factory.cc revision ca12bfac764ba476d6cd062bf1dde12cc64c3f40 
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#endif  // defined(OS_CHROMEOS)
26
27using content::BrowserThread;
28
29// static
30net::ProxyConfigService* ProxyServiceFactory::CreateProxyConfigService(
31    PrefProxyConfigTracker* tracker) {
32  // The linux gconf-based proxy settings getter relies on being initialized
33  // from the UI thread.
34  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
35
36  scoped_ptr<net::ProxyConfigService> base_service;
37
38#if !defined(OS_CHROMEOS)
39  // On ChromeOS, base service is NULL; chromeos::ProxyConfigServiceImpl
40  // determines the effective proxy config to take effect in the network layer,
41  // be it from prefs or system (which is network shill on chromeos).
42
43  // For other platforms, create a baseline service that provides proxy
44  // configuration in case nothing is configured through prefs (Note: prefs
45  // include command line and configuration policy).
46
47  // TODO(port): the IO and FILE message loops are only used by Linux.  Can
48  // that code be moved to chrome/browser instead of being in net, so that it
49  // can use BrowserThread instead of raw MessageLoop pointers? See bug 25354.
50  base_service.reset(net::ProxyService::CreateSystemProxyConfigService(
51      BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO).get(),
52      BrowserThread::UnsafeGetMessageLoopForThread(BrowserThread::FILE)));
53#endif  // !defined(OS_CHROMEOS)
54
55  return tracker->CreateTrackingProxyConfigService(base_service.Pass())
56      .release();
57}
58
59// static
60PrefProxyConfigTracker*
61ProxyServiceFactory::CreatePrefProxyConfigTrackerOfProfile(
62    PrefService* profile_prefs,
63    PrefService* local_state_prefs) {
64#if defined(OS_CHROMEOS)
65  return new chromeos::ProxyConfigServiceImpl(profile_prefs, local_state_prefs);
66#else
67  return new PrefProxyConfigTrackerImpl(profile_prefs);
68#endif  // defined(OS_CHROMEOS)
69}
70
71// static
72PrefProxyConfigTracker*
73ProxyServiceFactory::CreatePrefProxyConfigTrackerOfLocalState(
74    PrefService* local_state_prefs) {
75#if defined(OS_CHROMEOS)
76  return new chromeos::ProxyConfigServiceImpl(NULL, local_state_prefs);
77#else
78  return new PrefProxyConfigTrackerImpl(local_state_prefs);
79#endif  // defined(OS_CHROMEOS)
80}
81
82// static
83net::ProxyService* ProxyServiceFactory::CreateProxyService(
84    net::NetLog* net_log,
85    net::URLRequestContext* context,
86    net::NetworkDelegate* network_delegate,
87    net::ProxyConfigService* proxy_config_service,
88    const CommandLine& command_line) {
89  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
90
91#if defined(OS_IOS)
92  bool use_v8 = false;
93#else
94  bool use_v8 = !command_line.HasSwitch(switches::kWinHttpProxyResolver);
95  if (use_v8 && command_line.HasSwitch(switches::kSingleProcess)) {
96    // See the note about V8 multithreading in net/proxy/proxy_resolver_v8.h
97    // to understand why we have this limitation.
98    LOG(ERROR) << "Cannot use V8 Proxy resolver in single process mode.";
99    use_v8 = false;  // Fallback to non-v8 implementation.
100  }
101#endif  // defined(OS_IOS)
102
103  size_t num_pac_threads = 0u;  // Use default number of threads.
104
105  // Check the command line for an override on the number of proxy resolver
106  // threads to use.
107  if (command_line.HasSwitch(switches::kNumPacThreads)) {
108    std::string s = command_line.GetSwitchValueASCII(switches::kNumPacThreads);
109
110    // Parse the switch (it should be a positive integer formatted as decimal).
111    int n;
112    if (base::StringToInt(s, &n) && n > 0) {
113      num_pac_threads = static_cast<size_t>(n);
114    } else {
115      LOG(ERROR) << "Invalid switch for number of PAC threads: " << s;
116    }
117  }
118
119  net::ProxyService* proxy_service = NULL;
120  if (use_v8) {
121#if defined(OS_IOS)
122    NOTREACHED();
123#else
124    net::DhcpProxyScriptFetcherFactory dhcp_factory;
125    if (command_line.HasSwitch(switches::kDisableDhcpWpad)) {
126      dhcp_factory.set_enabled(false);
127    }
128
129    proxy_service = net::CreateProxyServiceUsingV8ProxyResolver(
130        proxy_config_service,
131        new net::ProxyScriptFetcherImpl(context),
132        dhcp_factory.Create(context),
133        context->host_resolver(),
134        net_log,
135        network_delegate);
136#endif  // defined(OS_IOS)
137  } else {
138    proxy_service = net::ProxyService::CreateUsingSystemProxyResolver(
139        proxy_config_service,
140        num_pac_threads,
141        net_log);
142  }
143
144  return proxy_service;
145}
146