mirror of
https://github.com/kidfromjupiter/nearby.git
synced 2026-09-15 07:06:11 -04:00
229 lines
7.8 KiB
C++
229 lines
7.8 KiB
C++
// Copyright 2022 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "absl/strings/str_format.h"
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#include "internal/platform/implementation/windows/wifi.h"
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#include "internal/platform/implementation/windows/utils.h"
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#include "internal/platform/logging.h"
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namespace location {
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namespace nearby {
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namespace windows {
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namespace {
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constexpr int kMacAddrLen = 6;
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constexpr int kDefaultApFreq = -1;
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} // namespace
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WifiMedium::WifiMedium() {
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InitCapability();
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}
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PWLAN_INTERFACE_INFO_LIST EnumInterface(PHANDLE client_handle) {
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DWORD client_version = 2;
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DWORD negotiated_version = 0;
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DWORD result = 0;
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/* variables used for WlanEnumInterfaces */
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PWLAN_INTERFACE_INFO_LIST p_intf_list = NULL;
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result =
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WlanOpenHandle(client_version, NULL, &negotiated_version, client_handle);
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if (result != ERROR_SUCCESS) {
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NEARBY_LOGS(INFO) << "WlanOpenHandle failed with error: " << result;
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return p_intf_list;
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}
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result = WlanEnumInterfaces(*client_handle, NULL, &p_intf_list);
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if (result != ERROR_SUCCESS) {
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NEARBY_LOGS(INFO) << "WlanEnumInterfaces failed with error: " << result;
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}
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return p_intf_list;
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}
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bool WifiMedium::IsInterfaceValid() const {
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return wifi_interface_valid_;
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}
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void WifiMedium::InitCapability() {
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HANDLE client_handle = NULL;
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/* variables used for WlanEnumInterfaces */
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PWLAN_INTERFACE_INFO_LIST p_intf_list = NULL;
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PWLAN_INTERFACE_INFO p_intf_info = NULL;
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PWLAN_INTERFACE_CAPABILITY p_intf_capability = NULL;
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wifi_capability_.supports_5_ghz = false;
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wifi_capability_.supports_6_ghz = false;
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wifi_interface_valid_ = false;
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p_intf_list = EnumInterface(&client_handle);
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if (!client_handle) {
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NEARBY_LOGS(INFO) << "Client Handle is NULL";
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return;
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}
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if (!p_intf_list) {
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NEARBY_LOGS(INFO) << "WlanEnumInterfaces failed with error: ";
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return;
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}
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wifi_interface_valid_ = true;
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for (int i = 0; i < (int)p_intf_list->dwNumberOfItems; i++) {
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p_intf_info = (WLAN_INTERFACE_INFO*)&p_intf_list->InterfaceInfo[i];
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if (WlanGetInterfaceCapability(client_handle, &p_intf_info->InterfaceGuid,
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NULL, &p_intf_capability) != ERROR_SUCCESS) {
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NEARBY_LOGS(INFO) << "Get Capability failed";
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WlanFreeMemory(p_intf_list);
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p_intf_list = NULL;
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return;
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}
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for (int j = 0; j < p_intf_capability->dwNumberOfSupportedPhys; j++) {
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if (p_intf_capability->dot11PhyTypes[j] == dot11_phy_type_ofdm)
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wifi_capability_.supports_5_ghz = true;
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}
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}
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WlanFreeMemory(p_intf_capability);
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p_intf_capability = NULL;
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WlanFreeMemory(p_intf_list);
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p_intf_list = NULL;
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}
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api::WifiInformation& WifiMedium::GetInformation() {
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HANDLE client_handle = NULL;
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PWLAN_AVAILABLE_NETWORK_LIST pWLAN_AVAILABLE_NETWORK_LIST = NULL;
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DWORD result = 0;
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DWORD connect_info_size = sizeof(WLAN_CONNECTION_ATTRIBUTES);
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WLAN_OPCODE_VALUE_TYPE op_code_value_type = wlan_opcode_value_type_invalid;
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/* variables used for WlanEnumInterfaces */
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PWLAN_INTERFACE_INFO_LIST p_intf_list = NULL;
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PWLAN_INTERFACE_INFO p_intf_info = NULL;
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PWLAN_CONNECTION_ATTRIBUTES p_connect_info = NULL;
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ULONG* channel = NULL;
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wifi_information_.is_connected = false;
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wifi_information_.ap_frequency = kDefaultApFreq;
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p_intf_list = EnumInterface(&client_handle);
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if (!client_handle) {
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NEARBY_LOGS(INFO) << "Client Handle is NULL";
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return wifi_information_;
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}
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if (!p_intf_list) {
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NEARBY_LOGS(INFO) << "WlanEnumInterfaces failed with error: ";
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return wifi_information_;
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}
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for (int i = 0; i < (int)p_intf_list->dwNumberOfItems; i++) {
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p_intf_info = (WLAN_INTERFACE_INFO*)&p_intf_list->InterfaceInfo[i];
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if (p_intf_info->isState == wlan_interface_state_connected) {
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NEARBY_LOGS(INFO) << "Found connected WiFi interface No: " << i;
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wifi_information_.is_connected = true;
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DWORD channel_size;
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result = WlanQueryInterface(client_handle, &p_intf_info->InterfaceGuid,
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wlan_intf_opcode_channel_number, NULL,
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&channel_size, (PVOID*)&channel,
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&op_code_value_type);
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if (result != ERROR_SUCCESS) {
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NEARBY_LOGS(INFO) << "WlanQueryInterface error = " << result;
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} else {
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wifi_information_.ap_frequency =
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WifiUtils::ConvertChannelToFrequencyMhz(
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*channel, api::WifiBandType::kUnknown);
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NEARBY_LOGS(INFO) << "Frequency: " << *channel << "; ap_frequency: "
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<< wifi_information_.ap_frequency;
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WlanFreeMemory(channel);
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channel = NULL;
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}
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result = WlanQueryInterface(client_handle, &p_intf_info->InterfaceGuid,
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wlan_intf_opcode_current_connection, NULL,
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&connect_info_size, (PVOID*)&p_connect_info,
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&op_code_value_type);
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if (result != ERROR_SUCCESS) {
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NEARBY_LOGS(INFO) << "WlanQueryInterface error = " << result;
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WlanFreeMemory(p_intf_list);
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p_intf_list = NULL;
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return wifi_information_;
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}
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wifi_information_.ssid.resize(
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p_connect_info->wlanAssociationAttributes.dot11Ssid.uSSIDLength);
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std::memcpy(
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wifi_information_.ssid.data(),
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reinterpret_cast<const char*>(
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p_connect_info->wlanAssociationAttributes.dot11Ssid.ucSSID),
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wifi_information_.ssid.size());
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NEARBY_LOGS(INFO) << "wifi ssid is: " << wifi_information_.ssid
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<< "; length is:" << wifi_information_.ssid.length();
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char str_tmp[kMacAddrLen];
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strncpy(str_tmp,
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reinterpret_cast<const char*>(
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p_connect_info->wlanAssociationAttributes.dot11Bssid),
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kMacAddrLen);
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wifi_information_.bssid = absl::StrFormat(
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"%2llx:%2llx:%2llx:%2llx:%2llx:%2llx", str_tmp[0], str_tmp[1],
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str_tmp[2], str_tmp[3], str_tmp[4], str_tmp[5]);
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NEARBY_LOGS(INFO) << "wifi bssid is: " << wifi_information_.bssid;
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}
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}
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WlanFreeMemory(p_connect_info);
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p_connect_info = NULL;
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WlanFreeMemory(p_intf_list);
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p_intf_list = NULL;
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wifi_information_.ip_address_dot_decimal = GetIpAddress();
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wifi_information_.ip_address_4_bytes = ipaddr_dotdecimal_to_4bytes_string(
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wifi_information_.ip_address_dot_decimal);
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return wifi_information_;
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}
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std::string WifiMedium::GetIpAddress() {
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auto host_names = NetworkInformation::GetHostNames();
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for (auto host_name : host_names) {
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if (host_name.IPInformation() != nullptr &&
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host_name.IPInformation().NetworkAdapter() != nullptr &&
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host_name.Type() == HostNameType::Ipv4) {
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std::string ipv4_s = winrt::to_string(host_name.ToString());
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NEARBY_LOGS(INFO) << "Found IP: " << ipv4_s;
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auto profile = host_name.IPInformation()
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.NetworkAdapter()
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.GetConnectedProfileAsync()
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.get();
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if (profile.IsWlanConnectionProfile()) {
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if ( wifi_information_.ssid == winrt::to_string(
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profile.WlanConnectionProfileDetails().GetConnectedSsid())) {
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NEARBY_LOGS(INFO)
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<< "SSID of this IP matches with this WiFi interface's SSID:"
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<< wifi_information_.ssid << ", return this IP";
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return ipv4_s;
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}
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}
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}
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}
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return {};
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}
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} // namespace windows
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} // namespace nearby
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} // namespace location
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