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| 1 // Copyright 2013 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 "components/wifi/wifi_service.h" |
| 6 |
| 7 #include <iphlpapi.h> |
| 8 #include <objbase.h> |
| 9 #include <wlanapi.h> |
| 10 |
| 11 #include <set> |
| 12 |
| 13 #include "base/base_paths_win.h" |
| 14 #include "base/bind.h" |
| 15 #include "base/files/file_path.h" |
| 16 #include "base/memory/ref_counted.h" |
| 17 #include "base/message_loop/message_loop.h" |
| 18 #include "base/path_service.h" |
| 19 #include "base/strings/string16.h" |
| 20 #include "base/strings/string_util.h" |
| 21 #include "base/strings/utf_string_conversions.h" |
| 22 #include "base/win/registry.h" |
| 23 #include "components/onc/onc_constants.h" |
| 24 |
| 25 namespace { |
| 26 const char kWiFiServiceError[] = "Error.WiFiService"; |
| 27 const wchar_t kNwCategoryWizardRegKey[] = |
| 28 L"Software\\Microsoft\\Windows NT\\CurrentVersion\\Network\\" |
| 29 L"NwCategoryWizard"; |
| 30 const wchar_t kNwCategoryWizardRegValue[] = L"Show"; |
| 31 const wchar_t kNwCategoryWizardSavedRegValue[] = L"ShowSaved"; |
| 32 const wchar_t kNwCategoryWizardDeleteRegValue[] = L"ShowDelete"; |
| 33 const wchar_t kWlanApiDll[] = L"wlanapi.dll"; |
| 34 |
| 35 // WlanApi function names |
| 36 const char kWlanConnect[] = "WlanConnect"; |
| 37 const char kWlanCloseHandle[] = "WlanCloseHandle"; |
| 38 const char kWlanDisconnect[] = "WlanDisconnect"; |
| 39 const char kWlanEnumInterfaces[] = "WlanEnumInterfaces"; |
| 40 const char kWlanFreeMemory[] = "WlanFreeMemory"; |
| 41 const char kWlanGetAvailableNetworkList[] = "WlanGetAvailableNetworkList"; |
| 42 const char kWlanGetNetworkBssList[] = "WlanGetNetworkBssList"; |
| 43 const char kWlanGetProfile[] = "WlanGetProfile"; |
| 44 const char kWlanOpenHandle[] = "WlanOpenHandle"; |
| 45 const char kWlanRegisterNotification[] = "WlanRegisterNotification"; |
| 46 const char kWlanSaveTemporaryProfile[] = "WlanSaveTemporaryProfile"; |
| 47 const char kWlanScan[] = "WlanScan"; |
| 48 |
| 49 // WlanApi function definitions |
| 50 typedef DWORD (WINAPI* WlanConnectFunction)( |
| 51 HANDLE hClientHandle, |
| 52 CONST GUID *pInterfaceGuid, |
| 53 CONST PWLAN_CONNECTION_PARAMETERS pConnectionParameters, |
| 54 PVOID pReserved); |
| 55 |
| 56 typedef DWORD (WINAPI* WlanCloseHandleFunction)( |
| 57 HANDLE hClientHandle, |
| 58 PVOID pReserved); |
| 59 |
| 60 typedef DWORD (WINAPI* WlanDisconnectFunction)( |
| 61 HANDLE hClientHandle, |
| 62 CONST GUID *pInterfaceGuid, |
| 63 PVOID pReserved); |
| 64 |
| 65 typedef DWORD (WINAPI* WlanEnumInterfacesFunction)( |
| 66 HANDLE hClientHandle, |
| 67 PVOID pReserved, |
| 68 PWLAN_INTERFACE_INFO_LIST *ppInterfaceList); |
| 69 |
| 70 typedef VOID (WINAPI* WlanFreeMemoryFunction)( |
| 71 _In_ PVOID pMemory); |
| 72 |
| 73 typedef DWORD (WINAPI* WlanGetAvailableNetworkListFunction)( |
| 74 HANDLE hClientHandle, |
| 75 CONST GUID *pInterfaceGuid, |
| 76 DWORD dwFlags, |
| 77 PVOID pReserved, |
| 78 PWLAN_AVAILABLE_NETWORK_LIST *ppAvailableNetworkList); |
| 79 |
| 80 typedef DWORD (WINAPI* WlanGetNetworkBssListFunction)( |
| 81 HANDLE hClientHandle, |
| 82 const GUID* pInterfaceGuid, |
| 83 const PDOT11_SSID pDot11Ssid, |
| 84 DOT11_BSS_TYPE dot11BssType, |
| 85 BOOL bSecurityEnabled, |
| 86 PVOID pReserved, |
| 87 PWLAN_BSS_LIST* ppWlanBssList); |
| 88 |
| 89 typedef DWORD (WINAPI* WlanGetProfileFunction)( |
| 90 HANDLE hClientHandle, |
| 91 CONST GUID *pInterfaceGuid, |
| 92 LPCWSTR strProfileName, |
| 93 PVOID pReserved, |
| 94 LPWSTR *pstrProfileXml, |
| 95 DWORD *pdwFlags, |
| 96 DWORD *pdwGrantedAccess); |
| 97 |
| 98 typedef DWORD (WINAPI* WlanOpenHandleFunction)( |
| 99 DWORD dwClientVersion, |
| 100 PVOID pReserved, |
| 101 PDWORD pdwNegotiatedVersion, |
| 102 PHANDLE phClientHandle); |
| 103 |
| 104 typedef DWORD (WINAPI* WlanRegisterNotificationFunction)( |
| 105 HANDLE hClientHandle, |
| 106 DWORD dwNotifSource, |
| 107 BOOL bIgnoreDuplicate, |
| 108 WLAN_NOTIFICATION_CALLBACK funcCallback, |
| 109 PVOID pCallbackContext, |
| 110 PVOID pReserved, |
| 111 PDWORD pdwPrevNotifSource); |
| 112 |
| 113 typedef DWORD (WINAPI* WlanSaveTemporaryProfileFunction)( |
| 114 HANDLE hClientHandle, |
| 115 CONST GUID* pInterfaceGuid, |
| 116 LPCWSTR strProfileName, |
| 117 LPCWSTR strAllUserProfileSecurity, |
| 118 DWORD dwFlags, |
| 119 BOOL bOverWrite, |
| 120 PVOID pReserved); |
| 121 |
| 122 typedef DWORD (WINAPI* WlanScanFunction)( |
| 123 HANDLE hClientHandle, |
| 124 CONST GUID *pInterfaceGuid, |
| 125 CONST PDOT11_SSID pDot11Ssid, |
| 126 CONST PWLAN_RAW_DATA pIeData, |
| 127 PVOID pReserved); |
| 128 |
| 129 } // namespace |
| 130 |
| 131 namespace wifi { |
| 132 |
| 133 // Implementation of WiFiService for Windows. |
| 134 class WiFiServiceImpl : public WiFiService, base::NonThreadSafe { |
| 135 public: |
| 136 WiFiServiceImpl(); |
| 137 virtual ~WiFiServiceImpl(); |
| 138 |
| 139 // WiFiService interface implementation. |
| 140 virtual void Initialize( |
| 141 scoped_refptr<base::SequencedTaskRunner> task_runner) OVERRIDE; |
| 142 |
| 143 virtual void UnInitialize() OVERRIDE; |
| 144 |
| 145 // Get Properties of network identified by |network_guid|. Populates |
| 146 // |properties| on success, |error| on failure. |
| 147 virtual void GetProperties(const std::string& network_guid, |
| 148 DictionaryValue* properties, |
| 149 std::string* error) OVERRIDE; |
| 150 |
| 151 // Set Properties of network identified by |network_guid|. Populates |error| |
| 152 // on failure. |
| 153 virtual void SetProperties(const std::string& network_guid, |
| 154 scoped_ptr<base::DictionaryValue> properties, |
| 155 std::string* error) OVERRIDE; |
| 156 |
| 157 // Get list of visible networks. Populates |network_list| on success. |
| 158 virtual void GetVisibleNetworks(ListValue* network_list) OVERRIDE; |
| 159 |
| 160 // Request network scan. Send |NetworkListChanged| event on completion. |
| 161 virtual void RequestNetworkScan() OVERRIDE; |
| 162 |
| 163 // Start connect to network identified by |network_guid|. Populates |error| |
| 164 // on failure. |
| 165 virtual void StartConnect(const std::string& network_guid, |
| 166 std::string* error) OVERRIDE; |
| 167 |
| 168 // Start disconnect from network identified by |network_guid|. Populates |
| 169 // |error| on failure. |
| 170 virtual void StartDisconnect(const std::string& network_guid, |
| 171 std::string* error) OVERRIDE; |
| 172 |
| 173 // Set observers to run when |NetworksChanged| and |NetworksListChanged| |
| 174 // events needs to be sent. Notifications are posted on |message_loop_proxy|. |
| 175 virtual void SetEventObservers( |
| 176 scoped_refptr<base::MessageLoopProxy> message_loop_proxy, |
| 177 const NetworkGuidListCallback& networks_changed_observer, |
| 178 const NetworkGuidListCallback& network_list_changed_observer) OVERRIDE; |
| 179 |
| 180 private: |
| 181 // Static callback for Windows WLAN_NOTIFICATION. Calls OnWlanNotification |
| 182 // on WiFiServiceImpl passed back as |context|. |
| 183 static void __stdcall OnWlanNotificationCallback( |
| 184 PWLAN_NOTIFICATION_DATA wlan_notification_data, |
| 185 PVOID context); |
| 186 |
| 187 // Callback for Windows WLAN_NOTIFICATION. Called on random thread from |
| 188 // OnWlanNotificationCallback. Handles network connectivity and scan complete |
| 189 // notification and posts tasks to main thread. |
| 190 void OnWlanNotification(PWLAN_NOTIFICATION_DATA wlan_notification_data); |
| 191 |
| 192 // Handles NetworkScanComplete notification on main thread. Sends |
| 193 // |NetworkListChanged| event with new list of visible networks. |
| 194 void OnNetworkScanCompleteOnMainThread(); |
| 195 |
| 196 // Wait up to |kMaxAttempts| with |kAttemptDelayMs| delay for connection |
| 197 // to network with |network_guid|. Reset DHCP and Notify that |NetworkChanged| |
| 198 // upon success. |
| 199 void WaitForNetworkConnect(const std::string& network_guid, int attempt); |
| 200 |
| 201 // Check |error_code| and if is not |ERROR_SUCCESS|, then store |error_name| |
| 202 // into |error|. |
| 203 bool CheckError(DWORD error_code, |
| 204 const std::string& error_name, |
| 205 std::string* error) const; |
| 206 |
| 207 // Return |iterator| to network identified by |network_guid| in |networks| |
| 208 // list. |
| 209 NetworkList::iterator FindNetwork(NetworkList& networks, |
| 210 const std::string& network_guid); |
| 211 |
| 212 // Save currently connected network profile and return its |
| 213 // |connected_network_guid|, so it can be re-connected later. |
| 214 DWORD SaveCurrentConnectedNetwork(std::string* connected_network_guid); |
| 215 |
| 216 // Sort networks, so connected/connecting is up front, then by type: |
| 217 // Ethernet, WiFi, Cellular, VPN |
| 218 static void SortNetworks(NetworkList* networks); |
| 219 |
| 220 // Open a WLAN client handle, register for WLAN notifications. |
| 221 DWORD OpenClientHandle(); |
| 222 |
| 223 // Reset DHCP on wireless network to work around an issue when Windows |
| 224 // takes forever to connect to the network, e.g. after Chromecast |
| 225 // device reset. |
| 226 DWORD ResetDHCP(); |
| 227 |
| 228 // Find |adapter_index_map| by |interface_guid| for DHCP reset. |
| 229 DWORD FindAdapterIndexMapByGUID(const GUID& interface_guid, |
| 230 IP_ADAPTER_INDEX_MAP* adapter_index_map); |
| 231 |
| 232 // Avoid the network location wizard to pop up when network is connected. |
| 233 // Preserve current value in |saved_nw_category_wizard_|. |
| 234 DWORD DisableNwCategoryWizard(); |
| 235 |
| 236 // Restore network location wizard to value saved by DisableNwCategoryWizard. |
| 237 DWORD RestoreNwCategoryWizard(); |
| 238 |
| 239 // Ensure that |client_| handle is initialized. |
| 240 DWORD EnsureInitialized(); |
| 241 |
| 242 // Close |client_| handle if it is open. |
| 243 DWORD CloseClientHandle(); |
| 244 |
| 245 // Get |profile_name| from unique |network_guid|. |
| 246 base::string16 ProfileNameFromGUID(const std::string& network_guid) const { |
| 247 return base::UTF8ToUTF16(network_guid); |
| 248 } |
| 249 |
| 250 // Get |dot11_ssid| from unique |network_guid|. |
| 251 DOT11_SSID SSIDFromGUID(const std::string& network_guid) const; |
| 252 |
| 253 // Get unique |network_guid| string based on |dot11_ssid|. |
| 254 std::string GUIDFromSSID(const DOT11_SSID& dot11_ssid) const { |
| 255 return std::string(reinterpret_cast<const char*>(dot11_ssid.ucSSID), |
| 256 dot11_ssid.uSSIDLength); |
| 257 } |
| 258 |
| 259 // Get network |ssid| string based on |wlan|. |
| 260 std::string SSIDFromWLAN(const WLAN_AVAILABLE_NETWORK& wlan) const { |
| 261 return GUIDFromSSID(wlan.dot11Ssid); |
| 262 } |
| 263 |
| 264 // Get unique |network_guid| string based on |wlan|. |
| 265 std::string GUIDFromWLAN(const WLAN_AVAILABLE_NETWORK& wlan) const { |
| 266 return SSIDFromWLAN(wlan); |
| 267 } |
| 268 |
| 269 // Deduce |onc::wifi| security from |alg|. |
| 270 std::string SecurityFromDot11AuthAlg(DOT11_AUTH_ALGORITHM alg) const; |
| 271 |
| 272 // Populate |properties| based on |wlan| and its corresponding bss info from |
| 273 // |wlan_bss_list|. |
| 274 void NetworkPropertiesFromAvailableNetwork(const WLAN_AVAILABLE_NETWORK& wlan, |
| 275 const WLAN_BSS_LIST& wlan_bss_list, |
| 276 NetworkProperties* properties); |
| 277 |
| 278 // Get the list of visible wireless networks. |
| 279 DWORD GetVisibleNetworkList(NetworkList* network_list); |
| 280 |
| 281 // Find currently connected network if any. Populate |connected_network_guid| |
| 282 // on success. |
| 283 DWORD FindConnectedNetwork(std::string* connected_network_guid); |
| 284 |
| 285 // Connect to network |network_guid| using previosly stored profile if exists, |
| 286 // or just network sid. If |frequency| is not |kFrequencyUnknown| then |
| 287 // connects only to BSS which uses that frequency and returns |
| 288 // |ERROR_NOT_FOUND| if such BSS cannot be found. |
| 289 DWORD Connect(const std::string& network_guid, Frequency frequency); |
| 290 |
| 291 // Disconnect from currently connected network if any. |
| 292 DWORD Disconnect(); |
| 293 |
| 294 // Get DOT11_BSSID_LIST of desired BSSIDs to connect to |ssid| network on |
| 295 // given |frequency|. |
| 296 DWORD GetDesiredBssList(DOT11_SSID& ssid, |
| 297 Frequency frequency, |
| 298 scoped_ptr<DOT11_BSSID_LIST>* desired_list); |
| 299 |
| 300 // Save temporary wireless profile for |network_guid|. |
| 301 DWORD SaveTempProfile(const std::string& network_guid); |
| 302 |
| 303 // Get previously stored |profile_xml| for |network_guid|. |
| 304 DWORD GetProfile(const std::string& network_guid, std::string* profile_xml); |
| 305 |
| 306 // Return true if there is previously stored profile xml for |network_guid|. |
| 307 bool HaveProfile(const std::string& network_guid); |
| 308 |
| 309 // Notify |network_list_changed_observer_| that list of visible networks has |
| 310 // changed to |networks|. |
| 311 void NotifyNetworkListChanged(const NetworkList& networks); |
| 312 |
| 313 // Notify |networks_changed_observer_| that network |network_guid| status has |
| 314 // changed. |
| 315 void NotifyNetworkChanged(const std::string& network_guid); |
| 316 |
| 317 // Load WlanApi.dll from SystemDirectory and get Api function pointers. |
| 318 DWORD LoadWlanLibrary(); |
| 319 // Instance of WlanApi.dll. |
| 320 HINSTANCE wlan_api_library_; |
| 321 // WlanApi function pointers |
| 322 WlanConnectFunction WlanConnect_function_; |
| 323 WlanCloseHandleFunction WlanCloseHandle_function_; |
| 324 WlanDisconnectFunction WlanDisconnect_function_; |
| 325 WlanEnumInterfacesFunction WlanEnumInterfaces_function_; |
| 326 WlanFreeMemoryFunction WlanFreeMemory_function_; |
| 327 WlanGetAvailableNetworkListFunction WlanGetAvailableNetworkList_function_; |
| 328 // WlanGetNetworkBssList function may not be avaiable on Windows XP. |
| 329 WlanGetNetworkBssListFunction WlanGetNetworkBssList_function_; |
| 330 WlanGetProfileFunction WlanGetProfile_function_; |
| 331 WlanOpenHandleFunction WlanOpenHandle_function_; |
| 332 WlanRegisterNotificationFunction WlanRegisterNotification_function_; |
| 333 WlanScanFunction WlanScan_function_; |
| 334 // WlanSaveTemporaryProfile function may not be avaiable on Windows XP. |
| 335 WlanSaveTemporaryProfileFunction WlanSaveTemporaryProfile_function_; |
| 336 |
| 337 // WLAN service handle. |
| 338 HANDLE client_; |
| 339 // GUID of the currently connected interface, if any, otherwise the GUID of |
| 340 // one of the WLAN interfaces. |
| 341 GUID interface_guid_; |
| 342 // Preserved WLAN profile xml. |
| 343 std::map<std::string, std::string> saved_profiles_xml_; |
| 344 // Observer to get notified when network(s) have changed (e.g. connect). |
| 345 NetworkGuidListCallback networks_changed_observer_; |
| 346 // Observer to get notified when network list has changed (scan complete). |
| 347 NetworkGuidListCallback network_list_changed_observer_; |
| 348 // Saved value of network location wizard show value. |
| 349 scoped_ptr<DWORD> saved_nw_category_wizard_; |
| 350 // MessageLoopProxy to post events on UI thread. |
| 351 scoped_refptr<base::MessageLoopProxy> message_loop_proxy_; |
| 352 // Task runner for worker tasks. |
| 353 scoped_refptr<base::SequencedTaskRunner> task_runner_; |
| 354 // If |false|, then |networks_changed_observer_| is not notified. |
| 355 bool enable_notify_network_changed_; |
| 356 // Number of attempts to check that network has connected successfully. |
| 357 static const int kMaxAttempts = 100; |
| 358 // Delay between attempts to check that network has connected successfully. |
| 359 static const int kAttemptDelayMs = 100; |
| 360 DISALLOW_COPY_AND_ASSIGN(WiFiServiceImpl); |
| 361 }; |
| 362 |
| 363 WiFiServiceImpl::WiFiServiceImpl() |
| 364 : wlan_api_library_(NULL), |
| 365 WlanConnect_function_(NULL), |
| 366 WlanCloseHandle_function_(NULL), |
| 367 WlanDisconnect_function_(NULL), |
| 368 WlanEnumInterfaces_function_(NULL), |
| 369 WlanFreeMemory_function_(NULL), |
| 370 WlanGetAvailableNetworkList_function_(NULL), |
| 371 WlanGetNetworkBssList_function_(NULL), |
| 372 WlanGetProfile_function_(NULL), |
| 373 WlanOpenHandle_function_(NULL), |
| 374 WlanRegisterNotification_function_(NULL), |
| 375 WlanSaveTemporaryProfile_function_(NULL), |
| 376 WlanScan_function_(NULL), |
| 377 client_(NULL), |
| 378 enable_notify_network_changed_(true) {} |
| 379 |
| 380 WiFiServiceImpl::~WiFiServiceImpl() { UnInitialize(); } |
| 381 |
| 382 void WiFiServiceImpl::Initialize( |
| 383 scoped_refptr<base::SequencedTaskRunner> task_runner) { |
| 384 DCHECK(!client_); |
| 385 task_runner_.swap(task_runner); |
| 386 // Restore NwCategoryWizard in case if we crashed during connect. |
| 387 RestoreNwCategoryWizard(); |
| 388 OpenClientHandle(); |
| 389 } |
| 390 |
| 391 void WiFiServiceImpl::UnInitialize() { |
| 392 CloseClientHandle(); |
| 393 } |
| 394 |
| 395 void WiFiServiceImpl::GetProperties(const std::string& network_guid, |
| 396 DictionaryValue* properties, |
| 397 std::string* error) { |
| 398 DWORD error_code = EnsureInitialized(); |
| 399 if (error_code == ERROR_SUCCESS) { |
| 400 NetworkList network_list; |
| 401 error_code = GetVisibleNetworkList(&network_list); |
| 402 if (error_code == ERROR_SUCCESS && !network_list.empty()) { |
| 403 NetworkList::const_iterator it = FindNetwork(network_list, network_guid); |
| 404 if (it != network_list.end()) { |
| 405 DVLOG(1) << "Get Properties: " << network_guid << ":" |
| 406 << it->connection_state; |
| 407 properties->Swap(it->ToValue(false).get()); |
| 408 return; |
| 409 } else { |
| 410 error_code = ERROR_NOT_FOUND; |
| 411 } |
| 412 } |
| 413 } |
| 414 |
| 415 CheckError(error_code, kWiFiServiceError, error); |
| 416 } |
| 417 |
| 418 void WiFiServiceImpl::SetProperties( |
| 419 const std::string& network_guid, |
| 420 scoped_ptr<base::DictionaryValue> properties, |
| 421 std::string* error) { |
| 422 // This method is not implemented in first version as it is not used by |
| 423 // Google Cast extension. |
| 424 CheckError(ERROR_CALL_NOT_IMPLEMENTED, kWiFiServiceError, error); |
| 425 } |
| 426 |
| 427 void WiFiServiceImpl::GetVisibleNetworks(ListValue* network_list) { |
| 428 DWORD error = EnsureInitialized(); |
| 429 |
| 430 if (error == ERROR_SUCCESS) { |
| 431 NetworkList networks; |
| 432 error = GetVisibleNetworkList(&networks); |
| 433 if (error == ERROR_SUCCESS && !networks.empty()) { |
| 434 SortNetworks(&networks); |
| 435 for (WiFiService::NetworkList::const_iterator it = networks.begin(); |
| 436 it != networks.end(); |
| 437 ++it) { |
| 438 scoped_ptr<DictionaryValue> network(it->ToValue(true)); |
| 439 network_list->Append(network.release()); |
| 440 } |
| 441 } |
| 442 } |
| 443 } |
| 444 |
| 445 void WiFiServiceImpl::RequestNetworkScan() { |
| 446 DWORD error = EnsureInitialized(); |
| 447 if (error == ERROR_SUCCESS) { |
| 448 WlanScan_function_(client_, &interface_guid_, NULL, NULL, NULL); |
| 449 } |
| 450 } |
| 451 |
| 452 void WiFiServiceImpl::StartConnect(const std::string& network_guid, |
| 453 std::string* error) { |
| 454 DVLOG(1) << "Start Connect: " << network_guid; |
| 455 DWORD error_code = EnsureInitialized(); |
| 456 if (error_code == ERROR_SUCCESS) { |
| 457 std::string connected_network_guid; |
| 458 error_code = SaveCurrentConnectedNetwork(&connected_network_guid); |
| 459 if (error_code == ERROR_SUCCESS) { |
| 460 Frequency frequency = kFrequencyAny; |
| 461 // Connect only if network |network_guid| is not connected already. |
| 462 if (network_guid != connected_network_guid) |
| 463 error_code = Connect(network_guid, frequency); |
| 464 if (error_code == ERROR_SUCCESS) { |
| 465 // Notify that previously connected network has changed. |
| 466 NotifyNetworkChanged(connected_network_guid); |
| 467 // Start waiting for network connection state change. |
| 468 if (!networks_changed_observer_.is_null()) { |
| 469 DisableNwCategoryWizard(); |
| 470 // Disable automatic network change notifications as they get fired |
| 471 // when network is just connected, but not yet accessible (doesn't |
| 472 // have valid IP address). |
| 473 enable_notify_network_changed_ = false; |
| 474 WaitForNetworkConnect(network_guid, 0); |
| 475 return; |
| 476 } |
| 477 } |
| 478 } |
| 479 } |
| 480 CheckError(error_code, kWiFiServiceError, error); |
| 481 } |
| 482 |
| 483 void WiFiServiceImpl::StartDisconnect(const std::string& network_guid, |
| 484 std::string* error) { |
| 485 DVLOG(1) << "Start Disconnect: " << network_guid; |
| 486 DWORD error_code = EnsureInitialized(); |
| 487 if (error_code == ERROR_SUCCESS) { |
| 488 std::string connected_network_guid; |
| 489 error_code = SaveCurrentConnectedNetwork(&connected_network_guid); |
| 490 if (error_code == ERROR_SUCCESS && network_guid == connected_network_guid) { |
| 491 error_code = Disconnect(); |
| 492 if (error_code == ERROR_SUCCESS) { |
| 493 NotifyNetworkChanged(network_guid); |
| 494 return; |
| 495 } |
| 496 } |
| 497 } |
| 498 CheckError(error_code, kWiFiServiceError, error); |
| 499 } |
| 500 |
| 501 void WiFiServiceImpl::SetEventObservers( |
| 502 scoped_refptr<base::MessageLoopProxy> message_loop_proxy, |
| 503 const NetworkGuidListCallback& networks_changed_observer, |
| 504 const NetworkGuidListCallback& network_list_changed_observer) { |
| 505 message_loop_proxy_.swap(message_loop_proxy); |
| 506 networks_changed_observer_ = networks_changed_observer; |
| 507 network_list_changed_observer_ = network_list_changed_observer; |
| 508 } |
| 509 |
| 510 void WiFiServiceImpl::OnWlanNotificationCallback( |
| 511 PWLAN_NOTIFICATION_DATA wlan_notification_data, |
| 512 PVOID context) { |
| 513 WiFiServiceImpl* service = reinterpret_cast<WiFiServiceImpl*>(context); |
| 514 service->OnWlanNotification(wlan_notification_data); |
| 515 } |
| 516 |
| 517 void WiFiServiceImpl::OnWlanNotification( |
| 518 PWLAN_NOTIFICATION_DATA wlan_notification_data) { |
| 519 if (message_loop_proxy_ == NULL) |
| 520 return; |
| 521 switch (wlan_notification_data->NotificationCode) { |
| 522 case wlan_notification_acm_disconnected: |
| 523 case wlan_notification_acm_connection_complete: |
| 524 case wlan_notification_acm_connection_attempt_fail: { |
| 525 PWLAN_CONNECTION_NOTIFICATION_DATA wlan_connection_data = |
| 526 reinterpret_cast<PWLAN_CONNECTION_NOTIFICATION_DATA>( |
| 527 wlan_notification_data->pData); |
| 528 message_loop_proxy_->PostTask( |
| 529 FROM_HERE, |
| 530 base::Bind(&WiFiServiceImpl::NotifyNetworkChanged, |
| 531 base::Unretained(this), |
| 532 GUIDFromSSID(wlan_connection_data->dot11Ssid))); |
| 533 break; |
| 534 } |
| 535 case wlan_notification_acm_scan_complete: |
| 536 message_loop_proxy_->PostTask( |
| 537 FROM_HERE, |
| 538 base::Bind(&WiFiServiceImpl::OnNetworkScanCompleteOnMainThread, |
| 539 base::Unretained(this))); |
| 540 break; |
| 541 } |
| 542 } |
| 543 |
| 544 void WiFiServiceImpl::OnNetworkScanCompleteOnMainThread() { |
| 545 NetworkList networks; |
| 546 // Get current list of visible networks and notify that network list has |
| 547 // changed. |
| 548 DWORD error = GetVisibleNetworkList(&networks); |
| 549 DCHECK(error == ERROR_SUCCESS); |
| 550 if (error == ERROR_SUCCESS) |
| 551 NotifyNetworkListChanged(networks); |
| 552 } |
| 553 |
| 554 void WiFiServiceImpl::WaitForNetworkConnect(const std::string& network_guid, |
| 555 int attempt) { |
| 556 // If network didn't get connected in |kMaxAttempts|, then restore automatic |
| 557 // network change notifications and stop waiting. |
| 558 if (attempt > kMaxAttempts) { |
| 559 DLOG(ERROR) << kMaxAttempts << " attempts exceeded waiting for connect to " |
| 560 << network_guid; |
| 561 enable_notify_network_changed_ = true; |
| 562 RestoreNwCategoryWizard(); |
| 563 return; |
| 564 } |
| 565 std::string connected_network_guid; |
| 566 DWORD error = FindConnectedNetwork(&connected_network_guid); |
| 567 if (network_guid == connected_network_guid) { |
| 568 DVLOG(1) << "WiFi Connected, Reset DHCP: " << network_guid; |
| 569 // Even though wireless network is now connected, it may still be unusable, |
| 570 // e.g. after Chromecast device reset. Reset DHCP on wireless network to |
| 571 // work around this issue. |
| 572 error = ResetDHCP(); |
| 573 // Restore previously suppressed notifications. |
| 574 enable_notify_network_changed_ = true; |
| 575 RestoreNwCategoryWizard(); |
| 576 NotifyNetworkChanged(network_guid); |
| 577 } else { |
| 578 // Continue waiting for network connection state change. |
| 579 task_runner_->PostDelayedTask( |
| 580 FROM_HERE, |
| 581 base::Bind(&WiFiServiceImpl::WaitForNetworkConnect, |
| 582 base::Unretained(this), |
| 583 network_guid, |
| 584 ++attempt), |
| 585 base::TimeDelta::FromMilliseconds(kAttemptDelayMs)); |
| 586 } |
| 587 } |
| 588 |
| 589 bool WiFiServiceImpl::CheckError(DWORD error_code, |
| 590 const std::string& error_name, |
| 591 std::string* error) const { |
| 592 if (error_code != ERROR_SUCCESS) { |
| 593 DLOG(ERROR) << "WiFiService Error " << error_code << ": " << error_name; |
| 594 *error = error_name; |
| 595 return true; |
| 596 } |
| 597 return false; |
| 598 } |
| 599 |
| 600 WiFiService::NetworkList::iterator WiFiServiceImpl::FindNetwork( |
| 601 NetworkList& networks, |
| 602 const std::string& network_guid) { |
| 603 for (NetworkList::iterator it = networks.begin(); it != networks.end(); |
| 604 ++it) { |
| 605 if (it->guid == network_guid) |
| 606 return it; |
| 607 } |
| 608 return networks.end(); |
| 609 } |
| 610 |
| 611 DWORD WiFiServiceImpl::SaveCurrentConnectedNetwork( |
| 612 std::string* connected_network_guid) { |
| 613 // Find currently connected network. |
| 614 DWORD error = FindConnectedNetwork(connected_network_guid); |
| 615 if (error == ERROR_SUCCESS && !connected_network_guid->empty()) { |
| 616 if (error == ERROR_SUCCESS) { |
| 617 SaveTempProfile(*connected_network_guid); |
| 618 std::string profile_xml; |
| 619 error = GetProfile(*connected_network_guid, &profile_xml); |
| 620 if (error == ERROR_SUCCESS) { |
| 621 saved_profiles_xml_[*connected_network_guid] = profile_xml; |
| 622 } |
| 623 } |
| 624 } |
| 625 return error; |
| 626 } |
| 627 |
| 628 void WiFiServiceImpl::SortNetworks(NetworkList* networks) { |
| 629 networks->sort(NetworkProperties::OrderByType); |
| 630 } |
| 631 |
| 632 DWORD WiFiServiceImpl::LoadWlanLibrary() { |
| 633 // Use an absolute path to load the DLL to avoid DLL preloading attacks. |
| 634 base::FilePath path; |
| 635 if (!PathService::Get(base::DIR_SYSTEM, &path)) { |
| 636 DLOG(ERROR) << "Unable to get system path."; |
| 637 return ERROR_NOT_FOUND; |
| 638 } |
| 639 wlan_api_library_ = ::LoadLibraryEx(path.Append(kWlanApiDll).value().c_str(), |
| 640 NULL, |
| 641 LOAD_WITH_ALTERED_SEARCH_PATH); |
| 642 if (!wlan_api_library_) { |
| 643 DLOG(ERROR) << "Unable to load WlanApi.dll."; |
| 644 return ERROR_NOT_FOUND; |
| 645 } |
| 646 |
| 647 // Initialize WlanApi function pointers |
| 648 WlanConnect_function_ = |
| 649 reinterpret_cast<WlanConnectFunction>( |
| 650 ::GetProcAddress(wlan_api_library_, kWlanConnect)); |
| 651 WlanCloseHandle_function_ = |
| 652 reinterpret_cast<WlanCloseHandleFunction>( |
| 653 ::GetProcAddress(wlan_api_library_, kWlanCloseHandle)); |
| 654 WlanDisconnect_function_ = |
| 655 reinterpret_cast<WlanDisconnectFunction>( |
| 656 ::GetProcAddress(wlan_api_library_, kWlanDisconnect)); |
| 657 WlanEnumInterfaces_function_ = |
| 658 reinterpret_cast<WlanEnumInterfacesFunction>( |
| 659 ::GetProcAddress(wlan_api_library_, kWlanEnumInterfaces)); |
| 660 WlanFreeMemory_function_ = |
| 661 reinterpret_cast<WlanFreeMemoryFunction>( |
| 662 ::GetProcAddress(wlan_api_library_, kWlanFreeMemory)); |
| 663 WlanGetAvailableNetworkList_function_ = |
| 664 reinterpret_cast<WlanGetAvailableNetworkListFunction>( |
| 665 ::GetProcAddress(wlan_api_library_, kWlanGetAvailableNetworkList)); |
| 666 WlanGetNetworkBssList_function_ = |
| 667 reinterpret_cast<WlanGetNetworkBssListFunction>( |
| 668 ::GetProcAddress(wlan_api_library_, kWlanGetNetworkBssList)); |
| 669 WlanGetProfile_function_ = |
| 670 reinterpret_cast<WlanGetProfileFunction>( |
| 671 ::GetProcAddress(wlan_api_library_, kWlanGetProfile)); |
| 672 WlanOpenHandle_function_ = |
| 673 reinterpret_cast<WlanOpenHandleFunction>( |
| 674 ::GetProcAddress(wlan_api_library_, kWlanOpenHandle)); |
| 675 WlanRegisterNotification_function_ = |
| 676 reinterpret_cast<WlanRegisterNotificationFunction>( |
| 677 ::GetProcAddress(wlan_api_library_, kWlanRegisterNotification)); |
| 678 WlanSaveTemporaryProfile_function_ = |
| 679 reinterpret_cast<WlanSaveTemporaryProfileFunction>( |
| 680 ::GetProcAddress(wlan_api_library_, kWlanSaveTemporaryProfile)); |
| 681 WlanScan_function_ = |
| 682 reinterpret_cast<WlanScanFunction>( |
| 683 ::GetProcAddress(wlan_api_library_, kWlanScan)); |
| 684 |
| 685 if (!WlanConnect_function_ || |
| 686 !WlanCloseHandle_function_ || |
| 687 !WlanDisconnect_function_ || |
| 688 !WlanEnumInterfaces_function_ || |
| 689 !WlanFreeMemory_function_ || |
| 690 !WlanGetAvailableNetworkList_function_ || |
| 691 !WlanGetProfile_function_ || |
| 692 !WlanOpenHandle_function_ || |
| 693 !WlanRegisterNotification_function_ || |
| 694 !WlanScan_function_) { |
| 695 DLOG(ERROR) << "Unable to find required WlanApi function."; |
| 696 FreeLibrary(wlan_api_library_); |
| 697 wlan_api_library_ = NULL; |
| 698 return ERROR_NOT_FOUND; |
| 699 } |
| 700 |
| 701 // Some WlanApi functions may not be available on XP. |
| 702 if (!WlanGetNetworkBssList_function_ || |
| 703 !WlanSaveTemporaryProfile_function_) { |
| 704 DVLOG(1) << "WlanApi function is not be available on XP."; |
| 705 } |
| 706 |
| 707 return ERROR_SUCCESS; |
| 708 } |
| 709 |
| 710 DWORD WiFiServiceImpl::OpenClientHandle() { |
| 711 DWORD error = LoadWlanLibrary(); |
| 712 DWORD service_version = 0; |
| 713 |
| 714 if (error != ERROR_SUCCESS) |
| 715 return error; |
| 716 |
| 717 // Open a handle to the service. |
| 718 error = WlanOpenHandle_function_(1, NULL, &service_version, &client_); |
| 719 |
| 720 PWLAN_INTERFACE_INFO_LIST interface_list = NULL; |
| 721 if (error == ERROR_SUCCESS) { |
| 722 // Enumerate wireless interfaces. |
| 723 error = WlanEnumInterfaces_function_(client_, NULL, &interface_list); |
| 724 if (error == ERROR_SUCCESS) { |
| 725 if (interface_list != NULL && interface_list->dwNumberOfItems != 0) { |
| 726 // Remember first interface just in case if none are connected. |
| 727 interface_guid_ = interface_list->InterfaceInfo[0].InterfaceGuid; |
| 728 // Try to find a connected interface. |
| 729 for (DWORD itf = 0; itf < interface_list->dwNumberOfItems; ++itf) { |
| 730 if (interface_list->InterfaceInfo[itf].isState == |
| 731 wlan_interface_state_connected) { |
| 732 // Found connected interface, remember it! |
| 733 interface_guid_ = interface_list->InterfaceInfo[itf].InterfaceGuid; |
| 734 break; |
| 735 } |
| 736 } |
| 737 WlanRegisterNotification_function_(client_, |
| 738 WLAN_NOTIFICATION_SOURCE_ALL, |
| 739 FALSE, |
| 740 OnWlanNotificationCallback, |
| 741 this, |
| 742 NULL, |
| 743 NULL); |
| 744 } else { |
| 745 error = ERROR_NOINTERFACE; |
| 746 } |
| 747 } |
| 748 // Clean up. |
| 749 if (interface_list != NULL) |
| 750 WlanFreeMemory_function_(interface_list); |
| 751 } |
| 752 return error; |
| 753 } |
| 754 |
| 755 DWORD WiFiServiceImpl::ResetDHCP() { |
| 756 IP_ADAPTER_INDEX_MAP adapter_index_map = {0}; |
| 757 DWORD error = FindAdapterIndexMapByGUID(interface_guid_, &adapter_index_map); |
| 758 if (error == ERROR_SUCCESS) { |
| 759 error = ::IpReleaseAddress(&adapter_index_map); |
| 760 if (error == ERROR_SUCCESS) { |
| 761 error = ::IpRenewAddress(&adapter_index_map); |
| 762 } |
| 763 } |
| 764 return error; |
| 765 } |
| 766 |
| 767 DWORD WiFiServiceImpl::FindAdapterIndexMapByGUID( |
| 768 const GUID& interface_guid, |
| 769 IP_ADAPTER_INDEX_MAP* adapter_index_map) { |
| 770 string16 guid_string; |
| 771 const int kGUIDSize = 39; |
| 772 ::StringFromGUID2( |
| 773 interface_guid, WriteInto(&guid_string, kGUIDSize), kGUIDSize); |
| 774 |
| 775 ULONG buffer_length = 0; |
| 776 DWORD error = ::GetInterfaceInfo(NULL, &buffer_length); |
| 777 if (error == ERROR_INSUFFICIENT_BUFFER) { |
| 778 scoped_ptr<unsigned char[]> buffer(new unsigned char[buffer_length]); |
| 779 IP_INTERFACE_INFO* interface_info = |
| 780 reinterpret_cast<IP_INTERFACE_INFO*>(buffer.get()); |
| 781 error = GetInterfaceInfo(interface_info, &buffer_length); |
| 782 if (error == ERROR_SUCCESS) { |
| 783 for (int adapter = 0; adapter < interface_info->NumAdapters; ++adapter) { |
| 784 if (EndsWith( |
| 785 interface_info->Adapter[adapter].Name, guid_string, false)) { |
| 786 *adapter_index_map = interface_info->Adapter[adapter]; |
| 787 break; |
| 788 } |
| 789 } |
| 790 } |
| 791 } |
| 792 return error; |
| 793 } |
| 794 |
| 795 DWORD WiFiServiceImpl::DisableNwCategoryWizard() { |
| 796 base::win::RegKey nw_category_wizard; |
| 797 DWORD error = nw_category_wizard.Open(HKEY_CURRENT_USER, |
| 798 kNwCategoryWizardRegKey, |
| 799 KEY_READ | KEY_SET_VALUE); |
| 800 if (error == ERROR_SUCCESS) { |
| 801 // Save current value if present. |
| 802 if (nw_category_wizard.HasValue(kNwCategoryWizardRegValue)) { |
| 803 DWORD saved = 0u; |
| 804 error = nw_category_wizard.ReadValueDW(kNwCategoryWizardRegValue, |
| 805 &saved); |
| 806 if (error == ERROR_SUCCESS) { |
| 807 error = nw_category_wizard.WriteValue(kNwCategoryWizardSavedRegValue, |
| 808 saved); |
| 809 } |
| 810 } else { |
| 811 // Mark that temporary value has to be deleted. |
| 812 error = nw_category_wizard.WriteValue(kNwCategoryWizardDeleteRegValue, |
| 813 1u); |
| 814 } |
| 815 |
| 816 // Disable network location wizard. |
| 817 error = nw_category_wizard.WriteValue(kNwCategoryWizardRegValue, |
| 818 static_cast<DWORD>(0)); |
| 819 } |
| 820 |
| 821 return error; |
| 822 } |
| 823 |
| 824 DWORD WiFiServiceImpl::RestoreNwCategoryWizard() { |
| 825 base::win::RegKey nw_category_wizard; |
| 826 DWORD error = nw_category_wizard.Open(HKEY_CURRENT_USER, |
| 827 kNwCategoryWizardRegKey, |
| 828 KEY_SET_VALUE); |
| 829 if (error == ERROR_SUCCESS) { |
| 830 // Restore saved value if present. |
| 831 if (nw_category_wizard.HasValue(kNwCategoryWizardSavedRegValue)) { |
| 832 DWORD saved = 0u; |
| 833 error = nw_category_wizard.ReadValueDW(kNwCategoryWizardSavedRegValue, |
| 834 &saved); |
| 835 if (error == ERROR_SUCCESS) { |
| 836 error = nw_category_wizard.WriteValue(kNwCategoryWizardRegValue, |
| 837 saved); |
| 838 error = nw_category_wizard.DeleteValue(kNwCategoryWizardSavedRegValue); |
| 839 } |
| 840 } else if (nw_category_wizard.HasValue(kNwCategoryWizardDeleteRegValue)) { |
| 841 error = nw_category_wizard.DeleteValue(kNwCategoryWizardRegValue); |
| 842 error = nw_category_wizard.DeleteValue(kNwCategoryWizardDeleteRegValue); |
| 843 } |
| 844 } |
| 845 |
| 846 return error; |
| 847 } |
| 848 |
| 849 DWORD WiFiServiceImpl::EnsureInitialized() { |
| 850 if (client_ != NULL) |
| 851 return ERROR_SUCCESS; |
| 852 return ERROR_NOINTERFACE; |
| 853 } |
| 854 |
| 855 DWORD WiFiServiceImpl::CloseClientHandle() { |
| 856 DWORD error = ERROR_SUCCESS; |
| 857 if (client_ != NULL) { |
| 858 error = WlanCloseHandle_function_(client_, NULL); |
| 859 client_ = NULL; |
| 860 } |
| 861 if (wlan_api_library_ != NULL) { |
| 862 WlanConnect_function_ = NULL; |
| 863 WlanCloseHandle_function_ = NULL; |
| 864 WlanDisconnect_function_ = NULL; |
| 865 WlanEnumInterfaces_function_ = NULL; |
| 866 WlanFreeMemory_function_ = NULL; |
| 867 WlanGetAvailableNetworkList_function_ = NULL; |
| 868 WlanGetNetworkBssList_function_ = NULL; |
| 869 WlanGetProfile_function_ = NULL; |
| 870 WlanOpenHandle_function_ = NULL; |
| 871 WlanRegisterNotification_function_ = NULL; |
| 872 WlanSaveTemporaryProfile_function_ = NULL; |
| 873 WlanScan_function_ = NULL; |
| 874 ::FreeLibrary(wlan_api_library_); |
| 875 wlan_api_library_ = NULL; |
| 876 } |
| 877 return error; |
| 878 } |
| 879 |
| 880 DOT11_SSID WiFiServiceImpl::SSIDFromGUID( |
| 881 const std::string& network_guid) const { |
| 882 DOT11_SSID ssid = {0}; |
| 883 if (network_guid.length() <= DOT11_SSID_MAX_LENGTH) { |
| 884 ssid.uSSIDLength = static_cast<ULONG>(network_guid.length()); |
| 885 strncpy(reinterpret_cast<char*>(ssid.ucSSID), |
| 886 network_guid.c_str(), |
| 887 ssid.uSSIDLength); |
| 888 } else { |
| 889 NOTREACHED(); |
| 890 } |
| 891 return ssid; |
| 892 } |
| 893 |
| 894 std::string WiFiServiceImpl::SecurityFromDot11AuthAlg( |
| 895 DOT11_AUTH_ALGORITHM alg) const { |
| 896 switch (alg) { |
| 897 case DOT11_AUTH_ALGO_RSNA: |
| 898 return onc::wifi::kWPA_EAP; |
| 899 case DOT11_AUTH_ALGO_RSNA_PSK: |
| 900 return onc::wifi::kWPA_PSK; |
| 901 case DOT11_AUTH_ALGO_80211_SHARED_KEY: |
| 902 return onc::wifi::kWEP_PSK; |
| 903 case DOT11_AUTH_ALGO_80211_OPEN: |
| 904 return onc::wifi::kNone; |
| 905 default: |
| 906 return onc::wifi::kWPA_EAP; |
| 907 } |
| 908 } |
| 909 |
| 910 void WiFiServiceImpl::NetworkPropertiesFromAvailableNetwork( |
| 911 const WLAN_AVAILABLE_NETWORK& wlan, |
| 912 const WLAN_BSS_LIST& wlan_bss_list, |
| 913 NetworkProperties* properties) { |
| 914 if (wlan.dwFlags & WLAN_AVAILABLE_NETWORK_CONNECTED) { |
| 915 properties->connection_state = onc::connection_state::kConnected; |
| 916 } else { |
| 917 properties->connection_state = onc::connection_state::kNotConnected; |
| 918 } |
| 919 |
| 920 properties->ssid = SSIDFromWLAN(wlan); |
| 921 properties->name = properties->ssid; |
| 922 properties->guid = GUIDFromWLAN(wlan); |
| 923 properties->type = onc::network_type::kWiFi; |
| 924 |
| 925 for (size_t bss = 0; bss < wlan_bss_list.dwNumberOfItems; ++bss) { |
| 926 const WLAN_BSS_ENTRY& bss_entry(wlan_bss_list.wlanBssEntries[bss]); |
| 927 if (bss_entry.dot11Ssid.uSSIDLength == wlan.dot11Ssid.uSSIDLength && |
| 928 0 == memcmp(bss_entry.dot11Ssid.ucSSID, |
| 929 wlan.dot11Ssid.ucSSID, |
| 930 bss_entry.dot11Ssid.uSSIDLength)) { |
| 931 if (bss_entry.ulChCenterFrequency < 3000000) |
| 932 properties->frequency = kFrequency2400; |
| 933 else |
| 934 properties->frequency = kFrequency5000; |
| 935 properties->frequency_list.push_back(properties->frequency); |
| 936 properties->bssid = NetworkProperties::MacAddressAsString( |
| 937 bss_entry.dot11Bssid); |
| 938 } |
| 939 } |
| 940 properties->frequency_list.sort(); |
| 941 properties->frequency_list.unique(); |
| 942 properties->security = |
| 943 SecurityFromDot11AuthAlg(wlan.dot11DefaultAuthAlgorithm); |
| 944 properties->signal_strength = wlan.wlanSignalQuality; |
| 945 } |
| 946 |
| 947 // Get the list of visible wireless networks |
| 948 DWORD WiFiServiceImpl::GetVisibleNetworkList(NetworkList* network_list) { |
| 949 if (client_ == NULL) { |
| 950 NOTREACHED(); |
| 951 return ERROR_NOINTERFACE; |
| 952 } |
| 953 |
| 954 DWORD error = ERROR_SUCCESS; |
| 955 PWLAN_AVAILABLE_NETWORK_LIST available_network_list = NULL; |
| 956 PWLAN_BSS_LIST bss_list = NULL; |
| 957 |
| 958 error = WlanGetAvailableNetworkList_function_( |
| 959 client_, |
| 960 &interface_guid_, |
| 961 WLAN_AVAILABLE_NETWORK_INCLUDE_ALL_MANUAL_HIDDEN_PROFILES, |
| 962 NULL, |
| 963 &available_network_list); |
| 964 |
| 965 std::set<std::string> network_guids; |
| 966 |
| 967 if (error == ERROR_SUCCESS && |
| 968 available_network_list && |
| 969 WlanGetNetworkBssList_function_) { |
| 970 // TODO(mef): WlanGetNetworkBssList is not available on XP. If XP support is |
| 971 // needed, then different method of getting BSS (e.g. OID query) will have |
| 972 // to be used. |
| 973 error = WlanGetNetworkBssList_function_(client_, |
| 974 &interface_guid_, |
| 975 NULL, |
| 976 dot11_BSS_type_any, |
| 977 FALSE, |
| 978 NULL, |
| 979 &bss_list); |
| 980 if (error == ERROR_SUCCESS && NULL != bss_list) { |
| 981 for (DWORD i = 0; i < available_network_list->dwNumberOfItems; ++i) { |
| 982 NetworkProperties network_properties; |
| 983 NetworkPropertiesFromAvailableNetwork( |
| 984 available_network_list->Network[i], |
| 985 *bss_list, |
| 986 &network_properties); |
| 987 // Check for duplicate network guids. |
| 988 if (network_guids.count(network_properties.guid)) { |
| 989 // There should be no difference between properties except for |
| 990 // |connection_state|, so mark it as |kConnected| if either one is. |
| 991 if (network_properties.connection_state == |
| 992 onc::connection_state::kConnected) { |
| 993 NetworkList::iterator previous_network_properties = |
| 994 FindNetwork(*network_list, network_properties.guid); |
| 995 DCHECK(previous_network_properties != network_list->end()); |
| 996 previous_network_properties->connection_state = |
| 997 network_properties.connection_state; |
| 998 } |
| 999 } else { |
| 1000 network_list->push_back(network_properties); |
| 1001 } |
| 1002 network_guids.insert(network_properties.guid); |
| 1003 } |
| 1004 } |
| 1005 } |
| 1006 |
| 1007 // clean up |
| 1008 if (available_network_list != NULL) { |
| 1009 WlanFreeMemory_function_(available_network_list); |
| 1010 } |
| 1011 if (bss_list != NULL) { |
| 1012 WlanFreeMemory_function_(bss_list); |
| 1013 } |
| 1014 return error; |
| 1015 } |
| 1016 |
| 1017 // Find currently connected network. |
| 1018 DWORD WiFiServiceImpl::FindConnectedNetwork( |
| 1019 std::string* connected_network_guid) { |
| 1020 if (client_ == NULL) { |
| 1021 NOTREACHED(); |
| 1022 return ERROR_NOINTERFACE; |
| 1023 } |
| 1024 |
| 1025 DWORD error = ERROR_SUCCESS; |
| 1026 PWLAN_AVAILABLE_NETWORK_LIST available_network_list = NULL; |
| 1027 error = WlanGetAvailableNetworkList_function_( |
| 1028 client_, &interface_guid_, 0, NULL, &available_network_list); |
| 1029 |
| 1030 if (error == ERROR_SUCCESS && NULL != available_network_list) { |
| 1031 for (DWORD i = 0; i < available_network_list->dwNumberOfItems; ++i) { |
| 1032 const WLAN_AVAILABLE_NETWORK& wlan = available_network_list->Network[i]; |
| 1033 if (wlan.dwFlags & WLAN_AVAILABLE_NETWORK_CONNECTED) { |
| 1034 *connected_network_guid = GUIDFromWLAN(wlan); |
| 1035 break; |
| 1036 } |
| 1037 } |
| 1038 } |
| 1039 |
| 1040 // clean up |
| 1041 if (available_network_list != NULL) { |
| 1042 WlanFreeMemory_function_(available_network_list); |
| 1043 } |
| 1044 |
| 1045 return error; |
| 1046 } |
| 1047 |
| 1048 DWORD WiFiServiceImpl::GetDesiredBssList( |
| 1049 DOT11_SSID& ssid, |
| 1050 Frequency frequency, |
| 1051 scoped_ptr<DOT11_BSSID_LIST>* desired_list) { |
| 1052 if (client_ == NULL) { |
| 1053 NOTREACHED(); |
| 1054 return ERROR_NOINTERFACE; |
| 1055 } |
| 1056 |
| 1057 desired_list->reset(); |
| 1058 |
| 1059 if (frequency == kFrequencyAny) |
| 1060 return ERROR_SUCCESS; |
| 1061 |
| 1062 // TODO(mef): WlanGetNetworkBssList is not available on XP. If XP support is |
| 1063 // needed, then different method of getting BSS (e.g. OID query) will have |
| 1064 // to be used. |
| 1065 if (!WlanGetNetworkBssList_function_) |
| 1066 return ERROR_NOT_SUPPORTED; |
| 1067 |
| 1068 DWORD error = ERROR_SUCCESS; |
| 1069 PWLAN_BSS_LIST bss_list = NULL; |
| 1070 |
| 1071 error = WlanGetNetworkBssList_function_(client_, |
| 1072 &interface_guid_, |
| 1073 NULL, |
| 1074 dot11_BSS_type_any, |
| 1075 FALSE, |
| 1076 NULL, |
| 1077 &bss_list); |
| 1078 if (error == ERROR_SUCCESS && NULL != bss_list) { |
| 1079 unsigned int best_quality = 0u; |
| 1080 size_t best_index = 0; |
| 1081 Frequency bss_frequency; |
| 1082 |
| 1083 // Go through bss_list and find best quality BSSID with matching frequency. |
| 1084 for (size_t bss = 0; bss < bss_list->dwNumberOfItems; ++bss) { |
| 1085 const WLAN_BSS_ENTRY& bss_entry(bss_list->wlanBssEntries[bss]); |
| 1086 if (bss_entry.dot11Ssid.uSSIDLength != ssid.uSSIDLength || |
| 1087 0 != memcmp(bss_entry.dot11Ssid.ucSSID, |
| 1088 ssid.ucSSID, |
| 1089 bss_entry.dot11Ssid.uSSIDLength)) |
| 1090 continue; |
| 1091 |
| 1092 if (bss_entry.ulChCenterFrequency < 3000000) |
| 1093 bss_frequency = kFrequency2400; |
| 1094 else |
| 1095 bss_frequency = kFrequency5000; |
| 1096 |
| 1097 if (bss_frequency == frequency && |
| 1098 bss_entry.uLinkQuality > best_quality) { |
| 1099 best_quality = bss_entry.uLinkQuality; |
| 1100 best_index = bss; |
| 1101 } |
| 1102 } |
| 1103 |
| 1104 // If any matching BSS were found, prepare the header. |
| 1105 if (best_quality > 0) { |
| 1106 const WLAN_BSS_ENTRY& bss_entry(bss_list->wlanBssEntries[best_index]); |
| 1107 scoped_ptr<DOT11_BSSID_LIST> selected_list(new DOT11_BSSID_LIST); |
| 1108 |
| 1109 selected_list->Header.Revision = DOT11_BSSID_LIST_REVISION_1; |
| 1110 selected_list->Header.Size = sizeof(DOT11_BSSID_LIST); |
| 1111 selected_list->Header.Type = NDIS_OBJECT_TYPE_DEFAULT; |
| 1112 selected_list->uNumOfEntries = 1; |
| 1113 selected_list->uTotalNumOfEntries = 1; |
| 1114 std::copy(bss_entry.dot11Bssid, |
| 1115 bss_entry.dot11Bssid+sizeof(bss_entry.dot11Bssid), |
| 1116 selected_list->BSSIDs[0]); |
| 1117 desired_list->swap(selected_list); |
| 1118 DVLOG(1) << "Quality: " << best_quality << " BSS: " |
| 1119 << NetworkProperties::MacAddressAsString(bss_entry.dot11Bssid); |
| 1120 } else { |
| 1121 error = ERROR_NOT_FOUND; |
| 1122 } |
| 1123 } |
| 1124 |
| 1125 // clean up |
| 1126 if (bss_list != NULL) { |
| 1127 WlanFreeMemory_function_(bss_list); |
| 1128 } |
| 1129 return error; |
| 1130 } |
| 1131 |
| 1132 |
| 1133 DWORD WiFiServiceImpl::Connect(const std::string& network_guid, |
| 1134 Frequency frequency) { |
| 1135 if (client_ == NULL) { |
| 1136 NOTREACHED(); |
| 1137 return ERROR_NOINTERFACE; |
| 1138 } |
| 1139 |
| 1140 DWORD error = ERROR_SUCCESS; |
| 1141 DOT11_SSID ssid = SSIDFromGUID(network_guid); |
| 1142 scoped_ptr<DOT11_BSSID_LIST> desired_bss_list; |
| 1143 error = GetDesiredBssList(ssid, frequency, &desired_bss_list); |
| 1144 if (error == ERROR_SUCCESS) { |
| 1145 if (HaveProfile(network_guid)) { |
| 1146 base::string16 profile_name = ProfileNameFromGUID(network_guid); |
| 1147 WLAN_CONNECTION_PARAMETERS wlan_params = { |
| 1148 wlan_connection_mode_profile, |
| 1149 profile_name.c_str(), |
| 1150 NULL, |
| 1151 desired_bss_list.get(), |
| 1152 dot11_BSS_type_any, |
| 1153 0}; |
| 1154 error = WlanConnect_function_( |
| 1155 client_, &interface_guid_, &wlan_params, NULL); |
| 1156 } else { |
| 1157 // TODO(mef): wlan_connection_mode_discovery_unsecure is not available on |
| 1158 // XP. If XP support is needed, then temporary profile will have to be |
| 1159 // created. |
| 1160 WLAN_CONNECTION_PARAMETERS wlan_params = { |
| 1161 wlan_connection_mode_discovery_unsecure, |
| 1162 NULL, |
| 1163 &ssid, |
| 1164 desired_bss_list.get(), |
| 1165 dot11_BSS_type_infrastructure, |
| 1166 0}; |
| 1167 error = WlanConnect_function_( |
| 1168 client_, &interface_guid_, &wlan_params, NULL); |
| 1169 } |
| 1170 } |
| 1171 |
| 1172 return error; |
| 1173 } |
| 1174 |
| 1175 DWORD WiFiServiceImpl::Disconnect() { |
| 1176 if (client_ == NULL) { |
| 1177 NOTREACHED(); |
| 1178 return ERROR_NOINTERFACE; |
| 1179 } |
| 1180 |
| 1181 DWORD error = ERROR_SUCCESS; |
| 1182 error = WlanDisconnect_function_(client_, &interface_guid_, NULL); |
| 1183 return error; |
| 1184 } |
| 1185 |
| 1186 DWORD WiFiServiceImpl::SaveTempProfile(const std::string& network_guid) { |
| 1187 if (client_ == NULL) { |
| 1188 NOTREACHED(); |
| 1189 return ERROR_NOINTERFACE; |
| 1190 } |
| 1191 |
| 1192 DWORD error = ERROR_SUCCESS; |
| 1193 base::string16 profile_name = ProfileNameFromGUID(network_guid); |
| 1194 // TODO(mef): WlanSaveTemporaryProfile is not available on XP. If XP support |
| 1195 // is needed, then different method of saving network profile will have to be |
| 1196 // used. |
| 1197 if (WlanSaveTemporaryProfile_function_) { |
| 1198 error = WlanSaveTemporaryProfile_function_(client_, |
| 1199 &interface_guid_, |
| 1200 profile_name.c_str(), |
| 1201 NULL, |
| 1202 WLAN_PROFILE_USER, |
| 1203 true, |
| 1204 NULL); |
| 1205 } else { |
| 1206 error = ERROR_NOT_SUPPORTED; |
| 1207 } |
| 1208 return error; |
| 1209 } |
| 1210 |
| 1211 DWORD WiFiServiceImpl::GetProfile(const std::string& network_guid, |
| 1212 std::string* profile_xml) { |
| 1213 if (client_ == NULL) { |
| 1214 NOTREACHED(); |
| 1215 return ERROR_NOINTERFACE; |
| 1216 } |
| 1217 |
| 1218 DWORD error = ERROR_SUCCESS; |
| 1219 base::string16 profile_name = ProfileNameFromGUID(network_guid); |
| 1220 LPWSTR str_profile_xml = NULL; |
| 1221 error = WlanGetProfile_function_(client_, |
| 1222 &interface_guid_, |
| 1223 profile_name.c_str(), |
| 1224 NULL, |
| 1225 &str_profile_xml, |
| 1226 NULL, |
| 1227 NULL); |
| 1228 |
| 1229 if (error == ERROR_SUCCESS && str_profile_xml != NULL) { |
| 1230 *profile_xml = base::UTF16ToUTF8(str_profile_xml); |
| 1231 } |
| 1232 // clean up |
| 1233 if (str_profile_xml != NULL) { |
| 1234 WlanFreeMemory_function_(str_profile_xml); |
| 1235 } |
| 1236 |
| 1237 return error; |
| 1238 } |
| 1239 |
| 1240 bool WiFiServiceImpl::HaveProfile(const std::string& network_guid) { |
| 1241 DWORD error = ERROR_SUCCESS; |
| 1242 std::string profile_xml; |
| 1243 return GetProfile(network_guid, &profile_xml) == ERROR_SUCCESS; |
| 1244 } |
| 1245 |
| 1246 void WiFiServiceImpl::NotifyNetworkListChanged(const NetworkList& networks) { |
| 1247 if (network_list_changed_observer_.is_null()) |
| 1248 return; |
| 1249 |
| 1250 NetworkGuidList current_networks; |
| 1251 for (NetworkList::const_iterator it = networks.begin(); |
| 1252 it != networks.end(); |
| 1253 ++it) { |
| 1254 current_networks.push_back(it->guid); |
| 1255 } |
| 1256 |
| 1257 message_loop_proxy_->PostTask( |
| 1258 FROM_HERE, |
| 1259 base::Bind(network_list_changed_observer_, current_networks)); |
| 1260 } |
| 1261 |
| 1262 void WiFiServiceImpl::NotifyNetworkChanged(const std::string& network_guid) { |
| 1263 if (enable_notify_network_changed_ && !networks_changed_observer_.is_null()) { |
| 1264 DVLOG(1) << "NotifyNetworkChanged: " << network_guid; |
| 1265 NetworkGuidList changed_networks(1, network_guid); |
| 1266 message_loop_proxy_->PostTask( |
| 1267 FROM_HERE, |
| 1268 base::Bind(networks_changed_observer_, changed_networks)); |
| 1269 } |
| 1270 } |
| 1271 |
| 1272 WiFiService* WiFiService::Create() { return new WiFiServiceImpl(); } |
| 1273 |
| 1274 } // namespace wifi |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 68503019:
Windows-specific implementation of Networking Private API. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src