src/chromeos/network/network_state.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 #include "chromeos/network/network_state.h"
   6
   7 #include "base/strings/stringprintf.h"
   8 #include "chromeos/network/network_event_log.h"
   9 #include "chromeos/network/network_profile_handler.h"
  10 #include "chromeos/network/network_type_pattern.h"
  11 #include "chromeos/network/network_util.h"
  12 #include "chromeos/network/onc/onc_utils.h"
  13 #include "chromeos/network/shill_property_util.h"
  14 #include "third_party/cros_system_api/dbus/service_constants.h"
  15
  16 namespace {
  17
  18 const char kErrorUnknown[] = "Unknown";
  19
  20 bool ConvertListValueToStringVector(const base::ListValue& string_list,
  21                                     std::vector<std::string>* result) {
  22   for (size_t i = 0; i < string_list.GetSize(); ++i) {
  23     std::string str;
  24     if (!string_list.GetString(i, &str))
  25       return false;
  26     result->push_back(str);
  27   }
  28   return true;
  29 }
  30
  31 bool IsCaCertNssSet(const base::DictionaryValue& properties) {
  32   std::string ca_cert_nss;
  33   if (properties.GetStringWithoutPathExpansion(shill::kEapCaCertNssProperty,
  34                                                &ca_cert_nss) &&
  35       !ca_cert_nss.empty()) {
  36     return true;
  37   }
  38
  39   const base::DictionaryValue* provider = NULL;
  40   properties.GetDictionaryWithoutPathExpansion(shill::kProviderProperty,
  41                                                &provider);
  42   if (!provider)
  43     return false;
  44   if (provider->GetStringWithoutPathExpansion(
  45           shill::kL2tpIpsecCaCertNssProperty, &ca_cert_nss) &&
  46       !ca_cert_nss.empty()) {
  47     return true;
  48   }
  49   if (provider->GetStringWithoutPathExpansion(
  50           shill::kOpenVPNCaCertNSSProperty, &ca_cert_nss) &&
  51       !ca_cert_nss.empty()) {
  52     return true;
  53   }
  54
  55   return false;
  56 }
  57
  58 }  // namespace
  59
  60 namespace chromeos {
  61
  62 NetworkState::NetworkState(const std::string& path)
  63     : ManagedState(MANAGED_TYPE_NETWORK, path),
  64       visible_(false),
  65       connectable_(false),
  66       prefix_length_(0),
  67       signal_strength_(0),
  68       cellular_out_of_credits_(false),
  69       has_ca_cert_nss_(false) {
  70 }
  71
  72 NetworkState::~NetworkState() {
  73 }
  74
  75 bool NetworkState::PropertyChanged(const std::string& key,
  76                                    const base::Value& value) {
  77   // Keep care that these properties are the same as in |GetProperties|.
  78   if (ManagedStatePropertyChanged(key, value))
  79     return true;
  80   if (key == shill::kSignalStrengthProperty) {
  81     return GetIntegerValue(key, value, &signal_strength_);
  82   } else if (key == shill::kStateProperty) {
  83     return GetStringValue(key, value, &connection_state_);
  84   } else if (key == shill::kVisibleProperty) {
  85     return GetBooleanValue(key, value, &visible_);
  86   } else if (key == shill::kConnectableProperty) {
  87     return GetBooleanValue(key, value, &connectable_);
  88   } else if (key == shill::kErrorProperty) {
  89     if (!GetStringValue(key, value, &error_))
  90       return false;
  91     if (ErrorIsValid(error_))
  92       last_error_ = error_;
  93     else
  94       error_.clear();
  95     return true;
  96   } else if (key == shill::kActivationTypeProperty) {
  97     return GetStringValue(key, value, &activation_type_);
  98   } else if (key == shill::kActivationStateProperty) {
  99     return GetStringValue(key, value, &activation_state_);
 100   } else if (key == shill::kRoamingStateProperty) {
 101     return GetStringValue(key, value, &roaming_);
 102   } else if (key == shill::kPaymentPortalProperty) {
 103     const base::DictionaryValue* olp;
 104     if (!value.GetAsDictionary(&olp))
 105       return false;
 106     return olp->GetStringWithoutPathExpansion(shill::kPaymentPortalURL,
 107                                               &payment_url_);
 108   } else if (key == shill::kSecurityProperty) {
 109     return GetStringValue(key, value, &security_);
 110   } else if (key == shill::kEapMethodProperty) {
 111     return GetStringValue(key, value, &eap_method_);
 112   } else if (key == shill::kNetworkTechnologyProperty) {
 113     return GetStringValue(key, value, &network_technology_);
 114   } else if (key == shill::kDeviceProperty) {
 115     return GetStringValue(key, value, &device_path_);
 116   } else if (key == shill::kGuidProperty) {
 117     return GetStringValue(key, value, &guid_);
 118   } else if (key == shill::kProfileProperty) {
 119     return GetStringValue(key, value, &profile_path_);
 120   } else if (key == shill::kOutOfCreditsProperty) {
 121     return GetBooleanValue(key, value, &cellular_out_of_credits_);
 122   } else if (key == shill::kProxyConfigProperty) {
 123     std::string proxy_config_str;
 124     if (!value.GetAsString(&proxy_config_str)) {
 125       NET_LOG_ERROR("Failed to parse " + key, path());
 126       return false;
 127     }
 128
 129     proxy_config_.Clear();
 130     if (proxy_config_str.empty())
 131       return true;
 132
 133     scoped_ptr<base::DictionaryValue> proxy_config_dict(
 134         onc::ReadDictionaryFromJson(proxy_config_str));
 135     if (proxy_config_dict) {
 136       // Warning: The DictionaryValue returned from
 137       // ReadDictionaryFromJson/JSONParser is an optimized derived class that
 138       // doesn't allow releasing ownership of nested values. A Swap in the wrong
 139       // order leads to memory access errors.
 140       proxy_config_.MergeDictionary(proxy_config_dict.get());
 141     } else {
 142       NET_LOG_ERROR("Failed to parse " + key, path());
 143     }
 144     return true;
 145   }
 146   return false;
 147 }
 148
 149 bool NetworkState::InitialPropertiesReceived(
 150     const base::DictionaryValue& properties) {
 151   NET_LOG_DEBUG("InitialPropertiesReceived", path());
 152   bool changed = false;
 153   if (!properties.HasKey(shill::kTypeProperty)) {
 154     NET_LOG_ERROR("NetworkState has no type",
 155                   shill_property_util::GetNetworkIdFromProperties(properties));
 156     return false;
 157   }
 158   // Ensure that the network has a valid name.
 159   changed |= UpdateName(properties);
 160
 161   // Set the has_ca_cert_nss_ property.
 162   bool had_ca_cert_nss = has_ca_cert_nss_;
 163   has_ca_cert_nss_ = IsCaCertNssSet(properties);
 164   changed |= had_ca_cert_nss != has_ca_cert_nss_;
 165
 166   // By convention, all visible WiFi and WiMAX networks have a
 167   // SignalStrength > 0.
 168   if ((type() == shill::kTypeWifi || type() == shill::kTypeWimax) &&
 169       visible() && signal_strength_ <= 0) {
 170       signal_strength_ = 1;
 171   }
 172
 173   return changed;
 174 }
 175
 176 void NetworkState::GetStateProperties(base::DictionaryValue* dictionary) const {
 177   ManagedState::GetStateProperties(dictionary);
 178
 179   // Properties shared by all types.
 180   dictionary->SetStringWithoutPathExpansion(shill::kGuidProperty, guid());
 181   dictionary->SetStringWithoutPathExpansion(shill::kSecurityProperty,
 182                                             security());
 183
 184   if (visible()) {
 185     if (!error().empty())
 186       dictionary->SetStringWithoutPathExpansion(shill::kErrorProperty, error());
 187     dictionary->SetStringWithoutPathExpansion(shill::kStateProperty,
 188                                               connection_state());
 189   }
 190
 191   // Wireless properties
 192   if (!NetworkTypePattern::Wireless().MatchesType(type()))
 193     return;
 194
 195   if (visible()) {
 196     dictionary->SetBooleanWithoutPathExpansion(shill::kConnectableProperty,
 197                                                connectable());
 198     dictionary->SetIntegerWithoutPathExpansion(shill::kSignalStrengthProperty,
 199                                                signal_strength());
 200   }
 201
 202   // Wifi properties
 203   if (NetworkTypePattern::WiFi().MatchesType(type())) {
 204     dictionary->SetStringWithoutPathExpansion(shill::kEapMethodProperty,
 205                                               eap_method());
 206   }
 207
 208   // Mobile properties
 209   if (NetworkTypePattern::Mobile().MatchesType(type())) {
 210     dictionary->SetStringWithoutPathExpansion(
 211         shill::kNetworkTechnologyProperty,
 212         network_technology());
 213     dictionary->SetStringWithoutPathExpansion(shill::kActivationStateProperty,
 214                                               activation_state());
 215     dictionary->SetStringWithoutPathExpansion(shill::kRoamingStateProperty,
 216                                               roaming());
 217     dictionary->SetBooleanWithoutPathExpansion(shill::kOutOfCreditsProperty,
 218                                                cellular_out_of_credits());
 219   }
 220 }
 221
 222 void NetworkState::IPConfigPropertiesChanged(
 223     const base::DictionaryValue& properties) {
 224   for (base::DictionaryValue::Iterator iter(properties);
 225        !iter.IsAtEnd(); iter.Advance()) {
 226     std::string key = iter.key();
 227     const base::Value& value = iter.value();
 228
 229     if (key == shill::kAddressProperty) {
 230       GetStringValue(key, value, &ip_address_);
 231     } else if (key == shill::kGatewayProperty) {
 232       GetStringValue(key, value, &gateway_);
 233     } else if (key == shill::kNameServersProperty) {
 234       const base::ListValue* dns_servers;
 235       if (value.GetAsList(&dns_servers)) {
 236         dns_servers_.clear();
 237         ConvertListValueToStringVector(*dns_servers, &dns_servers_);
 238       }
 239     } else if (key == shill::kPrefixlenProperty) {
 240       GetIntegerValue(key, value, &prefix_length_);
 241     } else if (key == shill::kWebProxyAutoDiscoveryUrlProperty) {
 242       std::string url_string;
 243       if (GetStringValue(key, value, &url_string)) {
 244         if (url_string.empty()) {
 245           web_proxy_auto_discovery_url_ = GURL();
 246         } else {
 247           GURL gurl(url_string);
 248           if (gurl.is_valid()) {
 249             web_proxy_auto_discovery_url_ = gurl;
 250           } else {
 251             NET_LOG_ERROR("Invalid WebProxyAutoDiscoveryUrl: " + url_string,
 252                           path());
 253             web_proxy_auto_discovery_url_ = GURL();
 254           }
 255         }
 256       }
 257     }
 258   }
 259 }
 260
 261 bool NetworkState::RequiresActivation() const {
 262   return (type() == shill::kTypeCellular &&
 263           activation_state() != shill::kActivationStateActivated &&
 264           activation_state() != shill::kActivationStateUnknown);
 265 }
 266
 267 std::string NetworkState::connection_state() const {
 268   if (!visible())
 269     return shill::kStateDisconnect;
 270   return connection_state_;
 271 }
 272
 273 bool NetworkState::IsConnectedState() const {
 274   return visible() && StateIsConnected(connection_state_);
 275 }
 276
 277 bool NetworkState::IsConnectingState() const {
 278   return visible() && StateIsConnecting(connection_state_);
 279 }
 280
 281 bool NetworkState::IsInProfile() const {
 282   // kTypeEthernetEap is always saved. We need this check because it does
 283   // not show up in the visible list, but its properties may not be available
 284   // when it first shows up in ServiceCompleteList. See crbug.com/355117.
 285   return !profile_path_.empty() || type() == shill::kTypeEthernetEap;
 286 }
 287
 288 bool NetworkState::IsPrivate() const {
 289   return !profile_path_.empty() &&
 290       profile_path_ != NetworkProfileHandler::GetSharedProfilePath();
 291 }
 292
 293 std::string NetworkState::GetDnsServersAsString() const {
 294   std::string result;
 295   for (size_t i = 0; i < dns_servers_.size(); ++i) {
 296     if (i != 0)
 297       result += ",";
 298     result += dns_servers_[i];
 299   }
 300   return result;
 301 }
 302
 303 std::string NetworkState::GetNetmask() const {
 304   return network_util::PrefixLengthToNetmask(prefix_length_);
 305 }
 306
 307 std::string NetworkState::GetSpecifier() const {
 308   if (!update_received()) {
 309     NET_LOG_ERROR("GetSpecifier called before update", path());
 310     return std::string();
 311   }
 312   if (type() == shill::kTypeWifi)
 313     return name() + "_" + security_;
 314   if (!name().empty())
 315     return name();
 316   return type();  // For unnamed networks such as ethernet.
 317 }
 318
 319 void NetworkState::SetGuid(const std::string& guid) {
 320   guid_ = guid;
 321 }
 322
 323 bool NetworkState::UpdateName(const base::DictionaryValue& properties) {
 324   std::string updated_name =
 325       shill_property_util::GetNameFromProperties(path(), properties);
 326   if (updated_name != name()) {
 327     set_name(updated_name);
 328     return true;
 329   }
 330   return false;
 331 }
 332
 333 // static
 334 bool NetworkState::StateIsConnected(const std::string& connection_state) {
 335   return (connection_state == shill::kStateReady ||
 336           connection_state == shill::kStateOnline ||
 337           connection_state == shill::kStatePortal);
 338 }
 339
 340 // static
 341 bool NetworkState::StateIsConnecting(const std::string& connection_state) {
 342   return (connection_state == shill::kStateAssociation ||
 343           connection_state == shill::kStateConfiguration ||
 344           connection_state == shill::kStateCarrier);
 345 }
 346
 347 // static
 348 bool NetworkState::ErrorIsValid(const std::string& error) {
 349   // Shill uses "Unknown" to indicate an unset or cleared error state.
 350   return !error.empty() && error != kErrorUnknown;
 351 }
 352
 353 }  // namespace chromeos