1// Copyright (c) 2011 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/string_number_conversions.h"
9#include "chrome/browser/browser_process.h"
10#include "chrome/browser/net/pref_proxy_config_service.h"
11#include "chrome/browser/io_thread.h"
12#include "chrome/common/chrome_switches.h"
13#include "content/browser/browser_thread.h"
14#include "net/base/net_log.h"
15#include "net/proxy/proxy_config_service.h"
16#include "net/proxy/proxy_script_fetcher_impl.h"
17#include "net/url_request/url_request_context.h"
18
19#if defined(OS_CHROMEOS)
20#include "chrome/browser/chromeos/cros/cros_library.h"
21#include "chrome/browser/chromeos/cros/libcros_service_library.h"
22#include "chrome/browser/chromeos/proxy_config_service.h"
23#endif  // defined(OS_CHROMEOS)
24
25// static
26net::ProxyConfigService* ProxyServiceFactory::CreateProxyConfigService(
27    PrefProxyConfigTracker* proxy_config_tracker) {
28  // The linux gconf-based proxy settings getter relies on being initialized
29  // from the UI thread.
30  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
31
32  // Create a baseline service that provides proxy configuration in case nothing
33  // is configured through prefs (Note: prefs include command line and
34  // configuration policy).
35  net::ProxyConfigService* base_service = NULL;
36
37  // TODO(port): the IO and FILE message loops are only used by Linux.  Can
38  // that code be moved to chrome/browser instead of being in net, so that it
39  // can use BrowserThread instead of raw MessageLoop pointers? See bug 25354.
40#if defined(OS_CHROMEOS)
41  base_service = new chromeos::ProxyConfigService(
42      g_browser_process->chromeos_proxy_config_service_impl());
43#else
44  base_service = net::ProxyService::CreateSystemProxyConfigService(
45      g_browser_process->io_thread()->message_loop(),
46      g_browser_process->file_thread()->message_loop());
47#endif  // defined(OS_CHROMEOS)
48
49  return new PrefProxyConfigService(proxy_config_tracker, base_service);
50}
51
52// static
53net::ProxyService* ProxyServiceFactory::CreateProxyService(
54    net::NetLog* net_log,
55    net::URLRequestContext* context,
56    net::ProxyConfigService* proxy_config_service,
57    const CommandLine& command_line) {
58  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
59
60  bool use_v8 = !command_line.HasSwitch(switches::kWinHttpProxyResolver);
61  if (use_v8 && command_line.HasSwitch(switches::kSingleProcess)) {
62    // See the note about V8 multithreading in net/proxy/proxy_resolver_v8.h
63    // to understand why we have this limitation.
64    LOG(ERROR) << "Cannot use V8 Proxy resolver in single process mode.";
65    use_v8 = false;  // Fallback to non-v8 implementation.
66  }
67
68  size_t num_pac_threads = 0u;  // Use default number of threads.
69
70  // Check the command line for an override on the number of proxy resolver
71  // threads to use.
72  if (command_line.HasSwitch(switches::kNumPacThreads)) {
73    std::string s = command_line.GetSwitchValueASCII(switches::kNumPacThreads);
74
75    // Parse the switch (it should be a positive integer formatted as decimal).
76    int n;
77    if (base::StringToInt(s, &n) && n > 0) {
78      num_pac_threads = static_cast<size_t>(n);
79    } else {
80      LOG(ERROR) << "Invalid switch for number of PAC threads: " << s;
81    }
82  }
83
84  net::ProxyService* proxy_service;
85  if (use_v8) {
86    proxy_service = net::ProxyService::CreateUsingV8ProxyResolver(
87        proxy_config_service,
88        num_pac_threads,
89        new net::ProxyScriptFetcherImpl(context),
90        context->host_resolver(),
91        net_log);
92  } else {
93    proxy_service = net::ProxyService::CreateUsingSystemProxyResolver(
94        proxy_config_service,
95        num_pac_threads,
96        net_log);
97  }
98
99#if defined(OS_CHROMEOS)
100  if (chromeos::CrosLibrary::Get()->EnsureLoaded()) {
101    chromeos::CrosLibrary::Get()->GetLibCrosServiceLibrary()->StartService();
102  }
103#endif  // defined(OS_CHROMEOS)
104
105  return proxy_service;
106}
107