net/tools/net_watcher/net_watcher.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 // This is a small utility that watches for and logs network changes.
   6
   7 #include <string>
   8
   9 #include "base/at_exit.h"
  10 #include "base/basictypes.h"
  11 #include "base/command_line.h"
  12 #include "base/compiler_specific.h"
  13 #include "base/json/json_writer.h"
  14 #include "base/logging.h"
  15 #include "base/memory/scoped_ptr.h"
  16 #include "base/message_loop/message_loop.h"
  17 #include "base/values.h"
  18 #include "build/build_config.h"
  19 #include "net/base/network_change_notifier.h"
  20 #include "net/proxy/proxy_config.h"
  21 #include "net/proxy/proxy_config_service.h"
  22 #include "net/proxy/proxy_service.h"
  23
  24 #if defined(USE_GLIB) && !defined(OS_CHROMEOS)
  25 #include <glib-object.h>
  26 #endif
  27
  28 #if defined(OS_MACOSX)
  29 #include "base/mac/scoped_nsautorelease_pool.h"
  30 #endif
  31
  32 namespace {
  33
  34 // Conversions from various network-related types to string.
  35
  36 const char* ConnectionTypeToString(
  37     net::NetworkChangeNotifier::ConnectionType type) {
  38   switch (type) {
  39     case net::NetworkChangeNotifier::CONNECTION_UNKNOWN:
  40       return "CONNECTION_UNKNOWN";
  41     case net::NetworkChangeNotifier::CONNECTION_ETHERNET:
  42       return "CONNECTION_ETHERNET";
  43     case net::NetworkChangeNotifier::CONNECTION_WIFI:
  44       return "CONNECTION_WIFI";
  45     case net::NetworkChangeNotifier::CONNECTION_2G:
  46       return "CONNECTION_2G";
  47     case net::NetworkChangeNotifier::CONNECTION_3G:
  48       return "CONNECTION_3G";
  49     case net::NetworkChangeNotifier::CONNECTION_4G:
  50       return "CONNECTION_4G";
  51     case net::NetworkChangeNotifier::CONNECTION_NONE:
  52       return "CONNECTION_NONE";
  53     case net::NetworkChangeNotifier::CONNECTION_BLUETOOTH:
  54       return "CONNECTION_BLUETOOTH";
  55     default:
  56       return "CONNECTION_UNEXPECTED";
  57   }
  58 }
  59
  60 std::string ProxyConfigToString(const net::ProxyConfig& config) {
  61   scoped_ptr<base::Value> config_value(config.ToValue());
  62   std::string str;
  63   base::JSONWriter::Write(config_value.get(), &str);
  64   return str;
  65 }
  66
  67 const char* ConfigAvailabilityToString(
  68     net::ProxyConfigService::ConfigAvailability availability) {
  69   switch (availability) {
  70     case net::ProxyConfigService::CONFIG_PENDING:
  71       return "CONFIG_PENDING";
  72     case net::ProxyConfigService::CONFIG_VALID:
  73       return "CONFIG_VALID";
  74     case net::ProxyConfigService::CONFIG_UNSET:
  75       return "CONFIG_UNSET";
  76     default:
  77       return "CONFIG_UNEXPECTED";
  78   }
  79 }
  80
  81 // The main observer class that logs network events.
  82 class NetWatcher :
  83       public net::NetworkChangeNotifier::IPAddressObserver,
  84       public net::NetworkChangeNotifier::ConnectionTypeObserver,
  85       public net::NetworkChangeNotifier::DNSObserver,
  86       public net::NetworkChangeNotifier::NetworkChangeObserver,
  87       public net::ProxyConfigService::Observer {
  88  public:
  89   NetWatcher() {}
  90
  91   ~NetWatcher() override {}
  92
  93   // net::NetworkChangeNotifier::IPAddressObserver implementation.
  94   void OnIPAddressChanged() override { LOG(INFO) << "OnIPAddressChanged()"; }
  95
  96   // net::NetworkChangeNotifier::ConnectionTypeObserver implementation.
  97   void OnConnectionTypeChanged(
  98       net::NetworkChangeNotifier::ConnectionType type) override {
  99     LOG(INFO) << "OnConnectionTypeChanged("
 100               << ConnectionTypeToString(type) << ")";
 101   }
 102
 103   // net::NetworkChangeNotifier::DNSObserver implementation.
 104   void OnDNSChanged() override { LOG(INFO) << "OnDNSChanged()"; }
 105
 106   // net::NetworkChangeNotifier::NetworkChangeObserver implementation.
 107   void OnNetworkChanged(
 108       net::NetworkChangeNotifier::ConnectionType type) override {
 109     LOG(INFO) << "OnNetworkChanged("
 110               << ConnectionTypeToString(type) << ")";
 111   }
 112
 113   // net::ProxyConfigService::Observer implementation.
 114   void OnProxyConfigChanged(
 115       const net::ProxyConfig& config,
 116       net::ProxyConfigService::ConfigAvailability availability) override {
 117     LOG(INFO) << "OnProxyConfigChanged("
 118               << ProxyConfigToString(config) << ", "
 119               << ConfigAvailabilityToString(availability) << ")";
 120   }
 121
 122  private:
 123   DISALLOW_COPY_AND_ASSIGN(NetWatcher);
 124 };
 125
 126 }  // namespace
 127
 128 int main(int argc, char* argv[]) {
 129 #if defined(OS_MACOSX)
 130   base::mac::ScopedNSAutoreleasePool pool;
 131 #endif
 132 #if defined(USE_GLIB) && !defined(OS_CHROMEOS)
 133   // g_type_init will be deprecated in 2.36. 2.35 is the development
 134   // version for 2.36, hence do not call g_type_init starting 2.35.
 135   // http://developer.gnome.org/gobject/unstable/gobject-Type-Information.html#g-type-init
 136 #if !GLIB_CHECK_VERSION(2, 35, 0)
 137   // Needed so ProxyConfigServiceLinux can use gconf.
 138   // Normally handled by BrowserMainLoop::InitializeToolkit().
 139   g_type_init();
 140 #endif
 141 #endif  // defined(USE_GLIB) && !defined(OS_CHROMEOS)
 142   base::AtExitManager exit_manager;
 143   base::CommandLine::Init(argc, argv);
 144   logging::LoggingSettings settings;
 145   settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
 146   logging::InitLogging(settings);
 147
 148   // Just make the main message loop the network loop.
 149   base::MessageLoopForIO network_loop;
 150
 151   NetWatcher net_watcher;
 152
 153   scoped_ptr<net::NetworkChangeNotifier> network_change_notifier(
 154       net::NetworkChangeNotifier::Create());
 155
 156   // Use the network loop as the file loop also.
 157   scoped_ptr<net::ProxyConfigService> proxy_config_service(
 158       net::ProxyService::CreateSystemProxyConfigService(
 159           network_loop.message_loop_proxy(),
 160           network_loop.message_loop_proxy()));
 161
 162   // Uses |network_change_notifier|.
 163   net::NetworkChangeNotifier::AddIPAddressObserver(&net_watcher);
 164   net::NetworkChangeNotifier::AddConnectionTypeObserver(&net_watcher);
 165   net::NetworkChangeNotifier::AddDNSObserver(&net_watcher);
 166   net::NetworkChangeNotifier::AddNetworkChangeObserver(&net_watcher);
 167
 168   proxy_config_service->AddObserver(&net_watcher);
 169
 170   LOG(INFO) << "Initial connection type: "
 171             << ConnectionTypeToString(
 172                 network_change_notifier->GetCurrentConnectionType());
 173
 174   {
 175     net::ProxyConfig config;
 176     const net::ProxyConfigService::ConfigAvailability availability =
 177         proxy_config_service->GetLatestProxyConfig(&config);
 178     LOG(INFO) << "Initial proxy config: "
 179               << ProxyConfigToString(config) << ", "
 180               << ConfigAvailabilityToString(availability);
 181   }
 182
 183   LOG(INFO) << "Watching for network events...";
 184
 185   // Start watching for events.
 186   network_loop.Run();
 187
 188   proxy_config_service->RemoveObserver(&net_watcher);
 189
 190   // Uses |network_change_notifier|.
 191   net::NetworkChangeNotifier::RemoveDNSObserver(&net_watcher);
 192   net::NetworkChangeNotifier::RemoveConnectionTypeObserver(&net_watcher);
 193   net::NetworkChangeNotifier::RemoveIPAddressObserver(&net_watcher);
 194   net::NetworkChangeNotifier::RemoveNetworkChangeObserver(&net_watcher);
 195
 196   return 0;
 197 }