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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#include "WlanLibrary.h"
#include "mozilla/Logging.h"
// Moz headers (alphabetical)
namespace mozilla {
extern LazyLogModule gWifiScannerLog;
}
#define WIFISCAN_LOG(args) \
MOZ_LOG(mozilla::gWifiScannerLog, mozilla::LogLevel::Debug, args)
WinWLANLibrary* WinWLANLibrary::Load() {
WinWLANLibrary* ret = new WinWLANLibrary();
if (!ret) {
return nullptr;
}
if (!ret->Initialize()) {
delete ret;
return nullptr;
}
return ret;
}
HANDLE
WinWLANLibrary::GetWLANHandle() const { return mWlanHandle; }
decltype(::WlanEnumInterfaces)* WinWLANLibrary::GetWlanEnumInterfacesPtr()
const {
return mWlanEnumInterfacesPtr;
}
decltype(::WlanGetNetworkBssList)* WinWLANLibrary::GetWlanGetNetworkBssListPtr()
const {
return mWlanGetNetworkBssListPtr;
}
decltype(::WlanFreeMemory)* WinWLANLibrary::GetWlanFreeMemoryPtr() const {
return mWlanFreeMemoryPtr;
}
decltype(::WlanCloseHandle)* WinWLANLibrary::GetWlanCloseHandlePtr() const {
return mWlanCloseHandlePtr;
}
decltype(::WlanOpenHandle)* WinWLANLibrary::GetWlanOpenHandlePtr() const {
return mWlanOpenHandlePtr;
}
decltype(::WlanRegisterNotification)*
WinWLANLibrary::GetWlanRegisterNotificationPtr() const {
return mWlanRegisterNotificationPtr;
}
decltype(::WlanScan)* WinWLANLibrary::GetWlanScanPtr() const {
return mWlanScanPtr;
}
bool WinWLANLibrary::Initialize() {
mWlanLibrary = LoadLibraryW(L"Wlanapi.dll");
if (!mWlanLibrary) {
WIFISCAN_LOG(
("WinWLANLibrary::Initialize failed - couldn't open wlanapi.dll"));
return false;
}
mWlanOpenHandlePtr = (decltype(::WlanOpenHandle)*)GetProcAddress(
mWlanLibrary, "WlanOpenHandle");
mWlanEnumInterfacesPtr = (decltype(::WlanEnumInterfaces)*)GetProcAddress(
mWlanLibrary, "WlanEnumInterfaces");
mWlanRegisterNotificationPtr =
(decltype(::WlanRegisterNotification)*)GetProcAddress(
mWlanLibrary, "WlanRegisterNotification");
mWlanScanPtr =
(decltype(::WlanScan)*)GetProcAddress(mWlanLibrary, "WlanScan");
mWlanFreeMemoryPtr = (decltype(::WlanFreeMemory)*)GetProcAddress(
mWlanLibrary, "WlanFreeMemory");
mWlanCloseHandlePtr = (decltype(::WlanCloseHandle)*)GetProcAddress(
mWlanLibrary, "WlanCloseHandle");
mWlanGetNetworkBssListPtr =
(decltype(::WlanGetNetworkBssList)*)GetProcAddress(
mWlanLibrary, "WlanGetNetworkBssList");
if (!mWlanOpenHandlePtr || !mWlanEnumInterfacesPtr ||
!mWlanRegisterNotificationPtr || !mWlanGetNetworkBssListPtr ||
!mWlanScanPtr || !mWlanFreeMemoryPtr || !mWlanCloseHandlePtr) {
WIFISCAN_LOG(
("WinWLANLibrary::Initialize failed to find functions in wlanapi.dll"));
return false;
}
// Get the handle to the WLAN API.
DWORD negotiated_version;
// We could be executing on either Windows XP or Windows Vista, so use the
// lower version of the client WLAN API. It seems that the negotiated version
// is the Vista version irrespective of what we pass!
static const int kXpWlanClientVersion = 1;
if (ERROR_SUCCESS != (*mWlanOpenHandlePtr)(kXpWlanClientVersion, nullptr,
&negotiated_version,
&mWlanHandle)) {
WIFISCAN_LOG(("WinWLANLibrary::Initialize: WlanOpenHandle failed"));
return false;
}
WIFISCAN_LOG(("WinWLANLibrary::Initialize succeeded - version is %lu",
negotiated_version));
return true;
}
WinWLANLibrary::~WinWLANLibrary() {
if (mWlanLibrary) {
if (mWlanHandle) {
(*mWlanCloseHandlePtr)(mWlanLibrary, mWlanHandle);
mWlanHandle = nullptr;
}
::FreeLibrary(mWlanLibrary);
mWlanLibrary = nullptr;
}
}
#undef WIFISCAN_LOG