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| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 // Windows Vista uses the Native Wifi (WLAN) API for accessing WiFi cards. See | 5 // Windows Vista uses the Native Wifi (WLAN) API for accessing WiFi cards. See |
| 6 // http://msdn.microsoft.com/en-us/library/ms705945(VS.85).aspx. Windows XP | 6 // http://msdn.microsoft.com/en-us/library/ms705945(VS.85).aspx. Windows XP |
| 7 // Service Pack 3 (and Windows XP Service Pack 2, if upgraded with a hot fix) | 7 // Service Pack 3 (and Windows XP Service Pack 2, if upgraded with a hot fix) |
| 8 // also support a limited version of the WLAN API. See | 8 // also support a limited version of the WLAN API. See |
| 9 // http://msdn.microsoft.com/en-us/library/bb204766.aspx. The WLAN API uses | 9 // http://msdn.microsoft.com/en-us/library/bb204766.aspx. The WLAN API uses |
| 10 // wlanapi.h, which is not part of the SDK used by Gears, so is replicated | 10 // wlanapi.h, which is not part of the SDK used by Gears, so is replicated |
| 11 // locally using data from the MSDN. | 11 // locally using data from the MSDN. |
| 12 // | 12 // |
| 13 // Windows XP from Service Pack 2 onwards supports the Wireless Zero | 13 // Windows XP from Service Pack 2 onwards supports the Wireless Zero |
| 14 // Configuration (WZC) programming interface. See | 14 // Configuration (WZC) programming interface. See |
| 15 // http://msdn.microsoft.com/en-us/library/ms706587(VS.85).aspx. | 15 // http://msdn.microsoft.com/en-us/library/ms706587(VS.85).aspx. |
| 16 // | 16 // |
| 17 // The MSDN recommends that one use the WLAN API where available, and WZC | 17 // The MSDN recommends that one use the WLAN API where available, and WZC |
| 18 // otherwise. | 18 // otherwise. |
| 19 // | 19 // |
| 20 // However, it seems that WZC fails for some wireless cards. Also, WLAN seems | 20 // However, it seems that WZC fails for some wireless cards. Also, WLAN seems |
| 21 // not to work on XP SP3. So we use WLAN on Vista, and use NDIS directly | 21 // not to work on XP SP3. So we use WLAN on Vista, and use NDIS directly |
| 22 // otherwise. | 22 // otherwise. |
| 23 | 23 |
| 24 #include "chrome/browser/geolocation/wifi_data_provider_win.h" | 24 #include "content/browser/geolocation/wifi_data_provider_win.h" |
| 25 | 25 |
| 26 #include <windows.h> | 26 #include <windows.h> |
| 27 #include <winioctl.h> | 27 #include <winioctl.h> |
| 28 #include <wlanapi.h> | 28 #include <wlanapi.h> |
| 29 | 29 |
| 30 #include "base/utf_string_conversions.h" | 30 #include "base/utf_string_conversions.h" |
| 31 #include "base/win/windows_version.h" | 31 #include "base/win/windows_version.h" |
| 32 #include "chrome/browser/geolocation/wifi_data_provider_common.h" | 32 #include "content/browser/geolocation/wifi_data_provider_common.h" |
| 33 #include "chrome/browser/geolocation/wifi_data_provider_common_win.h" | 33 #include "content/browser/geolocation/wifi_data_provider_common_win.h" |
| 34 | 34 |
| 35 // Taken from ndis.h for WinCE. | 35 // Taken from ndis.h for WinCE. |
| 36 #define NDIS_STATUS_INVALID_LENGTH ((NDIS_STATUS)0xC0010014L) | 36 #define NDIS_STATUS_INVALID_LENGTH ((NDIS_STATUS)0xC0010014L) |
| 37 #define NDIS_STATUS_BUFFER_TOO_SHORT ((NDIS_STATUS)0xC0010016L) | 37 #define NDIS_STATUS_BUFFER_TOO_SHORT ((NDIS_STATUS)0xC0010016L) |
| 38 | 38 |
| 39 namespace { | 39 namespace { |
| 40 // The limits on the size of the buffer used for the OID query. | 40 // The limits on the size of the buffer used for the OID query. |
| 41 const int kInitialBufferSize = 2 << 12; // Good for about 50 APs. | 41 const int kInitialBufferSize = 2 << 12; // Good for about 50 APs. |
| 42 const int kMaximumBufferSize = 2 << 20; // 2MB | 42 const int kMaximumBufferSize = 2 << 20; // 2MB |
| 43 | 43 |
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| 598 | 598 |
| 599 path->assign(buffer.get(), characters_written); | 599 path->assign(buffer.get(), characters_written); |
| 600 | 600 |
| 601 if (*path->rbegin() != L'\\') { | 601 if (*path->rbegin() != L'\\') { |
| 602 path->append(L"\\"); | 602 path->append(L"\\"); |
| 603 } | 603 } |
| 604 DCHECK_EQ(L'\\', *path->rbegin()); | 604 DCHECK_EQ(L'\\', *path->rbegin()); |
| 605 return true; | 605 return true; |
| 606 } | 606 } |
| 607 } // namespace | 607 } // namespace |
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