15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2010 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/browser/geolocation/wifi_data_provider_common_win.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <assert.h> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "base/strings/utf_string_conversions.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/browser/geolocation/wifi_data_provider_common.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace content { 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool ConvertToAccessPointData(const NDIS_WLAN_BSSID& data, 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AccessPointData *access_point_data) { 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Currently we get only MAC address, signal strength and SSID. 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(steveblock): Work out how to get age, channel and signal-to-noise. 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(access_point_data); 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) access_point_data->mac_address = MacAddressAsString16(data.MacAddress); 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) access_point_data->radio_signal_strength = data.Rssi; 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Note that _NDIS_802_11_SSID::Ssid::Ssid is not null-terminated. 225d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) base::UTF8ToUTF16(reinterpret_cast<const char*>(data.Ssid.Ssid), 235d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) data.Ssid.SsidLength, 245d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) &access_point_data->ssid); 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int GetDataFromBssIdList(const NDIS_802_11_BSSID_LIST& bss_id_list, 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int list_size, 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) WifiData::AccessPointDataSet* data) { 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Walk through the BSS IDs. 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int found = 0; 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const uint8 *iterator = reinterpret_cast<const uint8*>(&bss_id_list.Bssid[0]); 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const uint8 *end_of_buffer = 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) reinterpret_cast<const uint8*>(&bss_id_list) + list_size; 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (int i = 0; i < static_cast<int>(bss_id_list.NumberOfItems); ++i) { 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const NDIS_WLAN_BSSID *bss_id = 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) reinterpret_cast<const NDIS_WLAN_BSSID*>(iterator); 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Check that the length of this BSS ID is reasonable. 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (bss_id->Length < sizeof(NDIS_WLAN_BSSID) || 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) iterator + bss_id->Length > end_of_buffer) { 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AccessPointData access_point_data; 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (ConvertToAccessPointData(*bss_id, &access_point_data)) { 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) data->insert(access_point_data); 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ++found; 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Move to the next BSS ID. 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) iterator += bss_id->Length; 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return found; 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace content 56