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#include <main.h>
#include <internetFeatures.h>
#include <shlwapi.h>
#include <strsafe.h>
#define REGISTRY_FEATURE_CONTROL L"Software\\Microsoft\\Internet Explorer\\Main\\FeatureControl"
InternetFeatures::InternetFeatures()
: module(NULL), loadResult(S_FALSE),
CoInternetSetFeatureEnabled(NULL),
CoInternetIsFeatureEnabled(NULL),
processName_(NULL)
{
}
InternetFeatures::~InternetFeatures()
{
if (NULL != module)
{
FreeLibrary(module);
}
if (NULL != processName_)
free(processName_);
}
HRESULT InternetFeatures::LoadModule()
{
if (S_FALSE != loadResult)
return loadResult;
module = LoadLibrary(L"UrlMon.dll");
if (NULL == module)
{
DWORD errorCode = GetLastError();
loadResult = HRESULT_FROM_WIN32(errorCode);
return loadResult;
}
else
{
loadResult = S_OK;
}
CoInternetSetFeatureEnabled = (COINTERNETSETFEATUREENABLED)GetProcAddress(module, "CoInternetSetFeatureEnabled");
CoInternetIsFeatureEnabled = (COINTERNETISFEATUREENABLED)GetProcAddress(module, "CoInternetIsFeatureEnabled");
return loadResult;
}
const wchar_t *InternetFeatures::GetProcessName()
{
if (NULL == processName_)
{
wchar_t buffer[2*MAX_PATH] = {0};
unsigned long length = GetModuleFileNameW(NULL, buffer, ARRAYSIZE(buffer));
if (0 == length)
return NULL;
const wchar_t *fileName = PathFindFileName(buffer);
length = lstrlenW(fileName);
processName_ = (wchar_t *)calloc((length + 1), sizeof(wchar_t));
if (NULL == processName_)
return NULL;
memcpy(processName_, fileName, sizeof(wchar_t)*length);
processName_[length]=L'\0';
}
return processName_;
}
HRESULT InternetFeatures::SetEnabled(INTERNETFEATURELIST FeatureEntry, DWORD dwFlags, BOOL fEnable)
{
HRESULT hr = LoadModule();
if (FAILED(hr)) return hr;
if (NULL == CoInternetSetFeatureEnabled) return E_NOINTERFACE;
return CoInternetSetFeatureEnabled(FeatureEntry, dwFlags, fEnable);
}
HRESULT InternetFeatures::IsEnabled(INTERNETFEATURELIST FeatureEntry, DWORD dwFlags)
{
HRESULT hr = LoadModule();
if (FAILED(hr)) return hr;
if (NULL == CoInternetIsFeatureEnabled) return E_NOINTERFACE;
return CoInternetIsFeatureEnabled(FeatureEntry, dwFlags);
}
HRESULT InternetFeatures::SetDWORDFeature(const wchar_t *featureName, BOOL perUser, unsigned long value)
{
if (NULL == featureName
|| L'\0' == *featureName)
{
return E_INVALIDARG;
}
const wchar_t *processName = GetProcessName();
if (NULL == processName)
return E_UNEXPECTED;
HKEY rootKey = (FALSE != perUser) ? HKEY_CURRENT_USER : HKEY_LOCAL_MACHINE;
HKEY key = NULL;
unsigned long disposition = 0;
long errorCode = 0;
HRESULT result = S_OK;
wchar_t buffer[MAX_PATH] = {0};
if (FAILED(StringCchPrintf(buffer, ARRAYSIZE(buffer),
REGISTRY_FEATURE_CONTROL L"\\" L"%s",
featureName)))
{
return E_OUTOFMEMORY;
}
errorCode = RegCreateKeyEx(rootKey, buffer,
NULL, NULL, REG_OPTION_VOLATILE, KEY_WRITE,
NULL, &key, &disposition);
if (ERROR_SUCCESS != errorCode)
return HRESULT_FROM_WIN32(errorCode);
errorCode = RegSetValueEx(key, processName, 0, REG_DWORD, (const BYTE*)&value,
sizeof(unsigned long));
if (ERROR_SUCCESS != errorCode)
{
result = HRESULT_FROM_WIN32(errorCode);
}
else
{
result = S_OK;
}
RegCloseKey(key);
return result;
}
HRESULT InternetFeatures::GetDWORDFeature(const wchar_t *featureName, BOOL perUser, unsigned long *value)
{
if (NULL == featureName
|| L'\0' == *featureName)
{
return E_INVALIDARG;
}
if (NULL == value)
return E_POINTER;
const wchar_t *processName = GetProcessName();
if (NULL == processName)
return E_UNEXPECTED;
HKEY rootKey = (FALSE != perUser) ? HKEY_CURRENT_USER : HKEY_LOCAL_MACHINE;
HKEY key = NULL;
long errorCode = 0;
HRESULT result = S_OK;
unsigned long valueType = 0;
unsigned long valueSize = 0;
wchar_t buffer[MAX_PATH] = {0};
if (FAILED(StringCchPrintf(buffer, ARRAYSIZE(buffer),
REGISTRY_FEATURE_CONTROL L"\\" L"%s",
featureName)))
{
return E_OUTOFMEMORY;
}
errorCode = RegOpenKeyEx(rootKey, buffer, 0, KEY_READ, &key);
if (ERROR_SUCCESS != errorCode)
return HRESULT_FROM_WIN32(errorCode);
valueSize = sizeof(unsigned long);
errorCode = RegQueryValueEx(key, processName, 0, &valueType,
(BYTE*)value, &valueSize);
if (ERROR_SUCCESS != errorCode)
{
result = HRESULT_FROM_WIN32(errorCode);
}
else
{
if (REG_DWORD != valueType)
result = E_UNEXPECTED;
else
result = S_OK;
}
RegCloseKey(key);
return result;
}
void InternetFeatures::DeleteFeature(const wchar_t *featureName, BOOL perUser)
{
if (NULL == featureName
|| L'\0' == *featureName)
{
return;
}
const wchar_t *processName = GetProcessName();
if (NULL == processName)
return;
HKEY rootKey = (FALSE != perUser) ? HKEY_CURRENT_USER : HKEY_LOCAL_MACHINE;
HKEY key = NULL;
long errorCode = 0;
wchar_t buffer[MAX_PATH] = {0};
if (FAILED(StringCchPrintf(buffer, ARRAYSIZE(buffer),
REGISTRY_FEATURE_CONTROL L"\\" L"%s",
featureName)))
{
return;
}
errorCode = RegOpenKeyEx(rootKey, buffer, 0, KEY_WRITE, &key);
if (ERROR_SUCCESS != errorCode)
return;
RegDeleteValue(key, processName);
RegCloseKey(key);
}
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