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| 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/pref_proxy_config_service.h" | |
| 6 | |
| 7 #include "base/values.h" | |
| 8 #include "chrome/browser/prefs/pref_service.h" | |
| 9 #include "chrome/browser/prefs/pref_set_observer.h" | |
| 10 #include "chrome/browser/prefs/proxy_config_dictionary.h" | |
| 11 #include "chrome/common/chrome_notification_types.h" | |
| 12 #include "chrome/common/pref_names.h" | |
| 13 #include "content/public/browser/browser_thread.h" | |
| 14 #include "content/public/browser/notification_details.h" | |
| 15 #include "content/public/browser/notification_source.h" | |
| 16 | |
| 17 using content::BrowserThread; | |
| 18 | |
| 19 PrefProxyConfigTracker::PrefProxyConfigTracker(PrefService* pref_service) | |
| 20 : pref_service_(pref_service) { | |
| 21 config_state_ = ReadPrefConfig(&pref_config_); | |
| 22 proxy_prefs_observer_.reset( | |
| 23 PrefSetObserver::CreateProxyPrefSetObserver(pref_service_, this)); | |
| 24 } | |
| 25 | |
| 26 PrefProxyConfigTracker::~PrefProxyConfigTracker() { | |
| 27 DCHECK(pref_service_ == NULL); | |
| 28 } | |
| 29 | |
| 30 PrefProxyConfigTracker::ConfigState | |
| 31 PrefProxyConfigTracker::GetProxyConfig(net::ProxyConfig* config) { | |
| 32 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); | |
| 33 if (config_state_ != CONFIG_UNSET) | |
| 34 *config = pref_config_; | |
| 35 return config_state_; | |
| 36 } | |
| 37 | |
| 38 void PrefProxyConfigTracker::DetachFromPrefService() { | |
| 39 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
| 40 // Stop notifications. | |
| 41 proxy_prefs_observer_.reset(); | |
| 42 pref_service_ = NULL; | |
| 43 } | |
| 44 | |
| 45 void PrefProxyConfigTracker::AddObserver( | |
| 46 PrefProxyConfigTracker::Observer* observer) { | |
| 47 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); | |
| 48 observers_.AddObserver(observer); | |
| 49 } | |
| 50 | |
| 51 void PrefProxyConfigTracker::RemoveObserver( | |
| 52 PrefProxyConfigTracker::Observer* observer) { | |
| 53 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); | |
| 54 observers_.RemoveObserver(observer); | |
| 55 } | |
| 56 | |
| 57 void PrefProxyConfigTracker::Observe( | |
| 58 int type, | |
| 59 const content::NotificationSource& source, | |
| 60 const content::NotificationDetails& details) { | |
| 61 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
| 62 if (type == chrome::NOTIFICATION_PREF_CHANGED && | |
| 63 content::Source<PrefService>(source).ptr() == pref_service_) { | |
| 64 net::ProxyConfig new_config; | |
| 65 ConfigState config_state = ReadPrefConfig(&new_config); | |
| 66 BrowserThread::PostTask( | |
| 67 BrowserThread::IO, FROM_HERE, | |
| 68 NewRunnableMethod(this, | |
| 69 &PrefProxyConfigTracker::InstallProxyConfig, | |
| 70 new_config, config_state)); | |
| 71 } else { | |
| 72 NOTREACHED() << "Unexpected notification of type " << type; | |
| 73 } | |
| 74 } | |
| 75 | |
| 76 void PrefProxyConfigTracker::InstallProxyConfig( | |
| 77 const net::ProxyConfig& config, | |
| 78 PrefProxyConfigTracker::ConfigState config_state) { | |
| 79 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); | |
| 80 if (config_state_ != config_state || | |
| 81 (config_state_ != CONFIG_UNSET && !pref_config_.Equals(config))) { | |
| 82 config_state_ = config_state; | |
| 83 if (config_state_ != CONFIG_UNSET) | |
| 84 pref_config_ = config; | |
| 85 FOR_EACH_OBSERVER(Observer, observers_, OnPrefProxyConfigChanged()); | |
| 86 } | |
| 87 } | |
| 88 | |
| 89 PrefProxyConfigTracker::ConfigState | |
| 90 PrefProxyConfigTracker::ReadPrefConfig(net::ProxyConfig* config) { | |
| 91 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); | |
| 92 | |
| 93 // Clear the configuration. | |
| 94 *config = net::ProxyConfig(); | |
| 95 | |
| 96 const PrefService::Preference* pref = | |
| 97 pref_service_->FindPreference(prefs::kProxy); | |
| 98 DCHECK(pref); | |
| 99 | |
| 100 const DictionaryValue* dict = pref_service_->GetDictionary(prefs::kProxy); | |
| 101 DCHECK(dict); | |
| 102 ProxyConfigDictionary proxy_dict(dict); | |
| 103 | |
| 104 if (PrefConfigToNetConfig(proxy_dict, config)) { | |
| 105 return (!pref->IsUserModifiable() || pref->HasUserSetting()) ? | |
| 106 CONFIG_PRESENT : CONFIG_FALLBACK; | |
| 107 } | |
| 108 | |
| 109 return CONFIG_UNSET; | |
| 110 } | |
| 111 | |
| 112 bool PrefProxyConfigTracker::PrefConfigToNetConfig( | |
| 113 const ProxyConfigDictionary& proxy_dict, | |
| 114 net::ProxyConfig* config) { | |
| 115 ProxyPrefs::ProxyMode mode; | |
| 116 if (!proxy_dict.GetMode(&mode)) { | |
| 117 // Fall back to system settings if the mode preference is invalid. | |
| 118 return false; | |
| 119 } | |
| 120 | |
| 121 switch (mode) { | |
| 122 case ProxyPrefs::MODE_SYSTEM: | |
| 123 // Use system settings. | |
| 124 return false; | |
| 125 case ProxyPrefs::MODE_DIRECT: | |
| 126 // Ignore all the other proxy config preferences if the use of a proxy | |
| 127 // has been explicitly disabled. | |
| 128 return true; | |
| 129 case ProxyPrefs::MODE_AUTO_DETECT: | |
| 130 config->set_auto_detect(true); | |
| 131 return true; | |
| 132 case ProxyPrefs::MODE_PAC_SCRIPT: { | |
| 133 std::string proxy_pac; | |
| 134 if (!proxy_dict.GetPacUrl(&proxy_pac)) { | |
| 135 LOG(ERROR) << "Proxy settings request PAC script but do not specify " | |
| 136 << "its URL. Falling back to direct connection."; | |
| 137 return true; | |
| 138 } | |
| 139 GURL proxy_pac_url(proxy_pac); | |
| 140 if (!proxy_pac_url.is_valid()) { | |
| 141 LOG(ERROR) << "Invalid proxy PAC url: " << proxy_pac; | |
| 142 return true; | |
| 143 } | |
| 144 config->set_pac_url(proxy_pac_url); | |
| 145 bool pac_mandatory = false; | |
| 146 proxy_dict.GetPacMandatory(&pac_mandatory); | |
| 147 config->set_pac_mandatory(pac_mandatory); | |
| 148 return true; | |
| 149 } | |
| 150 case ProxyPrefs::MODE_FIXED_SERVERS: { | |
| 151 std::string proxy_server; | |
| 152 if (!proxy_dict.GetProxyServer(&proxy_server)) { | |
| 153 LOG(ERROR) << "Proxy settings request fixed proxy servers but do not " | |
| 154 << "specify their URLs. Falling back to direct connection."; | |
| 155 return true; | |
| 156 } | |
| 157 config->proxy_rules().ParseFromString(proxy_server); | |
| 158 | |
| 159 std::string proxy_bypass; | |
| 160 if (proxy_dict.GetBypassList(&proxy_bypass)) { | |
| 161 config->proxy_rules().bypass_rules.ParseFromString(proxy_bypass); | |
| 162 } | |
| 163 return true; | |
| 164 } | |
| 165 case ProxyPrefs::kModeCount: { | |
| 166 // Fall through to NOTREACHED(). | |
| 167 } | |
| 168 } | |
| 169 NOTREACHED() << "Unknown proxy mode, falling back to system settings."; | |
| 170 return false; | |
| 171 } | |
| 172 | |
| 173 PrefProxyConfigService::PrefProxyConfigService( | |
| 174 PrefProxyConfigTracker* tracker, | |
| 175 net::ProxyConfigService* base_service) | |
| 176 : base_service_(base_service), | |
| 177 pref_config_tracker_(tracker), | |
| 178 registered_observers_(false) { | |
| 179 } | |
| 180 | |
| 181 PrefProxyConfigService::~PrefProxyConfigService() { | |
| 182 if (registered_observers_) { | |
| 183 base_service_->RemoveObserver(this); | |
| 184 pref_config_tracker_->RemoveObserver(this); | |
| 185 } | |
| 186 } | |
| 187 | |
| 188 void PrefProxyConfigService::AddObserver( | |
| 189 net::ProxyConfigService::Observer* observer) { | |
| 190 RegisterObservers(); | |
| 191 observers_.AddObserver(observer); | |
| 192 } | |
| 193 | |
| 194 void PrefProxyConfigService::RemoveObserver( | |
| 195 net::ProxyConfigService::Observer* observer) { | |
| 196 observers_.RemoveObserver(observer); | |
| 197 } | |
| 198 | |
| 199 net::ProxyConfigService::ConfigAvailability | |
| 200 PrefProxyConfigService::GetLatestProxyConfig(net::ProxyConfig* config) { | |
| 201 RegisterObservers(); | |
| 202 net::ProxyConfig pref_config; | |
| 203 PrefProxyConfigTracker::ConfigState state = | |
| 204 pref_config_tracker_->GetProxyConfig(&pref_config); | |
| 205 if (state == PrefProxyConfigTracker::CONFIG_PRESENT) { | |
| 206 *config = pref_config; | |
| 207 return CONFIG_VALID; | |
| 208 } | |
| 209 | |
| 210 // Ask the base service. | |
| 211 ConfigAvailability available = base_service_->GetLatestProxyConfig(config); | |
| 212 | |
| 213 // Base service doesn't have a configuration, fall back to prefs or default. | |
| 214 if (available == CONFIG_UNSET) { | |
| 215 if (state == PrefProxyConfigTracker::CONFIG_FALLBACK) | |
| 216 *config = pref_config; | |
| 217 else | |
| 218 *config = net::ProxyConfig::CreateDirect(); | |
| 219 return CONFIG_VALID; | |
| 220 } | |
| 221 | |
| 222 return available; | |
| 223 } | |
| 224 | |
| 225 void PrefProxyConfigService::OnLazyPoll() { | |
| 226 base_service_->OnLazyPoll(); | |
| 227 } | |
| 228 | |
| 229 void PrefProxyConfigService::OnProxyConfigChanged( | |
| 230 const net::ProxyConfig& config, | |
| 231 ConfigAvailability availability) { | |
| 232 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); | |
| 233 | |
| 234 // Check whether there is a proxy configuration defined by preferences. In | |
| 235 // this case that proxy configuration takes precedence and the change event | |
| 236 // from the delegate proxy service can be disregarded. | |
| 237 net::ProxyConfig actual_config; | |
| 238 if (pref_config_tracker_->GetProxyConfig(&actual_config) != | |
| 239 PrefProxyConfigTracker::CONFIG_PRESENT) { | |
| 240 availability = GetLatestProxyConfig(&actual_config); | |
| 241 FOR_EACH_OBSERVER(net::ProxyConfigService::Observer, observers_, | |
| 242 OnProxyConfigChanged(actual_config, availability)); | |
| 243 } | |
| 244 } | |
| 245 | |
| 246 void PrefProxyConfigService::OnPrefProxyConfigChanged() { | |
| 247 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); | |
| 248 | |
| 249 // Evaluate the proxy configuration. If GetLatestProxyConfig returns | |
| 250 // CONFIG_PENDING, we are using the system proxy service, but it doesn't have | |
| 251 // a valid configuration yet. Once it is ready, OnProxyConfigChanged() will be | |
| 252 // called and broadcast the proxy configuration. | |
| 253 // Note: If a switch between a preference proxy configuration and the system | |
| 254 // proxy configuration occurs an unnecessary notification might get send if | |
| 255 // the two configurations agree. This case should be rare however, so we don't | |
| 256 // handle that case specially. | |
| 257 net::ProxyConfig new_config; | |
| 258 ConfigAvailability availability = GetLatestProxyConfig(&new_config); | |
| 259 if (availability != CONFIG_PENDING) { | |
| 260 FOR_EACH_OBSERVER(net::ProxyConfigService::Observer, observers_, | |
| 261 OnProxyConfigChanged(new_config, availability)); | |
| 262 } | |
| 263 } | |
| 264 | |
| 265 void PrefProxyConfigService::RegisterObservers() { | |
| 266 DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO)); | |
| 267 if (!registered_observers_) { | |
| 268 base_service_->AddObserver(this); | |
| 269 pref_config_tracker_->AddObserver(this); | |
| 270 registered_observers_ = true; | |
| 271 } | |
| 272 } | |
| 273 | |
| 274 // static | |
| 275 void PrefProxyConfigService::RegisterPrefs(PrefService* pref_service) { | |
| 276 DictionaryValue* default_settings = ProxyConfigDictionary::CreateSystem(); | |
| 277 pref_service->RegisterDictionaryPref(prefs::kProxy, | |
| 278 default_settings, | |
| 279 PrefService::UNSYNCABLE_PREF); | |
| 280 } | |
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Chromium Code Reviews
Issue 8102019:
redesign and reimplement proxy config service and tracker, revise proxy ui on cros (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/