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/*
* Copyright (C) 2010-2013 Hendrik Leppkes
* http://www.1f0.de
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "stdafx.h"
#include "registry.h"
bool CreateRegistryKey(HKEY hKeyRoot, LPCTSTR pszSubKey)
{
HKEY hKey;
LONG lRet;
lRet = RegCreateKeyEx(
hKeyRoot,
pszSubKey,
0,
nullptr,
REG_OPTION_NON_VOLATILE,
KEY_WRITE,
nullptr,
&hKey,
nullptr
);
if(lRet == ERROR_SUCCESS)
{
RegCloseKey(hKey);
hKey = (HKEY)nullptr;
return true;
}
SetLastError((DWORD)lRet);
return false;
}
CRegistry::CRegistry()
{
}
CRegistry::CRegistry(HKEY hkeyRoot, LPCTSTR pszSubKey, HRESULT &hr, BOOL bReadOnly, BOOL b64Bit)
{
hr = Open(hkeyRoot, pszSubKey, bReadOnly, b64Bit);
}
CRegistry::~CRegistry()
{
if (m_key)
RegCloseKey(*m_key);
delete m_key;
}
HRESULT CRegistry::Open(HKEY hkeyRoot, LPCTSTR pszSubKey, BOOL bReadOnly, BOOL b64Bit)
{
LONG lRet;
if (m_key != nullptr) { return E_UNEXPECTED; }
m_key = new HKEY();
REGSAM sam = bReadOnly ? KEY_READ : KEY_READ|KEY_WRITE;
if (b64Bit) sam |= KEY_WOW64_64KEY;
lRet = RegOpenKeyEx(hkeyRoot, pszSubKey, 0, sam, m_key);
if (lRet != ERROR_SUCCESS) {
delete m_key;
m_key = nullptr;
return E_FAIL;
}
return S_OK;
}
std::wstring CRegistry::ReadString(LPCTSTR pszKey, HRESULT &hr)
{
LONG lRet;
DWORD dwSize;
std::wstring result;
hr = S_OK;
if (m_key == nullptr) { hr = E_UNEXPECTED; return result; }
lRet = RegQueryValueEx(*m_key, pszKey, nullptr, nullptr, nullptr, &dwSize);
if (lRet == ERROR_SUCCESS) {
// Alloc Buffer to fit the data
WCHAR *buffer = (WCHAR *)CoTaskMemAlloc(dwSize);
if (!buffer) { hr = E_OUTOFMEMORY; return result; }
memset(buffer, 0, dwSize);
lRet = RegQueryValueEx(*m_key, pszKey, nullptr, nullptr, (LPBYTE)buffer, &dwSize);
result = std::wstring(buffer);
CoTaskMemFree(buffer);
}
if (lRet != ERROR_SUCCESS) {
hr = E_FAIL;
}
return result;
}
HRESULT CRegistry::WriteString(LPCTSTR pszKey, const LPCTSTR pszValue)
{
LONG lRet;
HRESULT hr;
hr = S_OK;
if (m_key == nullptr) { return E_UNEXPECTED; }
lRet = RegSetValueEx(*m_key, pszKey, 0, REG_SZ, (const BYTE *)pszValue, (DWORD)((wcslen(pszValue) + 1) * sizeof(WCHAR)));
if (lRet != ERROR_SUCCESS) {
return E_FAIL;
}
return S_OK;
}
DWORD CRegistry::ReadDWORD(LPCTSTR pszKey, HRESULT &hr)
{
LONG lRet;
DWORD dwSize = sizeof(DWORD);
DWORD dwVal = 0;
hr = S_OK;
if (m_key == nullptr) { hr = E_UNEXPECTED; return 0; }
lRet = RegQueryValueEx(*m_key, pszKey, 0, nullptr, (LPBYTE)&dwVal, &dwSize);
if (lRet != ERROR_SUCCESS) {
hr = E_FAIL;
}
return dwVal;
}
HRESULT CRegistry::WriteDWORD(LPCTSTR pszKey, DWORD dwValue)
{
LONG lRet;
HRESULT hr;
hr = S_OK;
if (m_key == nullptr) { return E_UNEXPECTED; }
lRet = RegSetValueEx(*m_key, pszKey, 0, REG_DWORD, (const BYTE *)&dwValue, sizeof(dwValue));
if (lRet != ERROR_SUCCESS) {
return E_FAIL;
}
return S_OK;
}
BOOL CRegistry::ReadBOOL(LPCTSTR pszKey, HRESULT &hr)
{
DWORD dwVal = ReadDWORD(pszKey, hr);
return dwVal ? TRUE : FALSE;
}
HRESULT CRegistry::WriteBOOL(LPCTSTR pszKey, BOOL bValue)
{
return WriteDWORD(pszKey, bValue);
}
BYTE *CRegistry::ReadBinary(LPCTSTR pszKey, DWORD &dwSize, HRESULT &hr)
{
LONG lRet;
BYTE *result = nullptr;
hr = S_OK;
if (m_key == nullptr) { hr = E_UNEXPECTED; return result; }
lRet = RegQueryValueEx(*m_key, pszKey, nullptr, nullptr, nullptr, &dwSize);
if (lRet == ERROR_SUCCESS) {
// Alloc Buffer to fit the data
result = (BYTE *)CoTaskMemAlloc(dwSize);
if (!result) { hr = E_OUTOFMEMORY; return result; }
memset(result, 0, dwSize);
lRet = RegQueryValueEx(*m_key, pszKey, nullptr, nullptr, (LPBYTE)result, &dwSize);
}
if (lRet != ERROR_SUCCESS) {
hr = E_FAIL;
CoTaskMemFree(result);
result = nullptr;
}
return result;
}
HRESULT CRegistry::WriteBinary(LPCTSTR pszKey, const BYTE *pbValue, int iLen)
{
LONG lRet;
HRESULT hr;
hr = S_OK;
if (m_key == nullptr) { return E_UNEXPECTED; }
lRet = RegSetValueEx(*m_key, pszKey, 0, REG_BINARY, (const BYTE *)pbValue, iLen);
if (lRet != ERROR_SUCCESS) {
return E_FAIL;
}
return S_OK;
}
HRESULT CRegistry::DeleteKey(LPCTSTR pszKey)
{
LONG lRet;
if (m_key == nullptr) { return E_UNEXPECTED; }
lRet = RegDeleteValue(*m_key, pszKey);
if (lRet != ERROR_SUCCESS) {
return E_FAIL;
}
return S_OK;
}
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