How to read registry correctly for multiple values in c?
- by kampi
Hi!
I created a .dll which should work like the RunAs command. The only difference is, that it should read from registry. My problem is, that i need to reed 3 values from the registry, but i can't. It reads the first, than it fails at the second one (Password) with error code 2, which means "The system cannot find the file specified". If i query only for domain and username then it is ok, if i query only for password then it it still succeeds, but if i want to query all three then it fails. Can someone tell me, what i am doing wrong?
Heres my code:
HKEY hKey = 0;
DWORD dwType = REG_SZ;
DWORD dwBufSize = sizeof(buf);
TCHAR szMsg [MAX_PATH + 32];
HANDLE handle;
LPVOID lpMsgBuf;
if( RegOpenKeyEx( HKEY_CURRENT_USER, TEXT("SOFTWARE\\Kampi Corporation\\RunAs!"), 0, KEY_QUERY_VALUE, &hKey ) == ERROR_SUCCESS )
{
if( RegQueryValueEx( hKey, TEXT("Username"), 0, &dwType, (LPBYTE)buf, &dwBufSize ) == ERROR_SUCCESS )
{
memset( szMsg, 0, sizeof( szMsg ) );
wsprintf ( szMsg, _T("%s"), buf );
mbstowcs( wuser, szMsg, 255 );
RegCloseKey( hKey );
}
else
{
MessageBox ( pCmdInfo->hwnd, "Can not query for Username key value!", _T("RunAs!"), MB_ICONERROR );
RegCloseKey( hKey );
return -1;
}
}
else
{
CSimpleShlExt::showerror( GetLastError(), pCmdInfo->hwnd, "RegOpenKeyEx failed for Username with error code :: " );
return -1;
}
if( RegOpenKeyEx( HKEY_CURRENT_USER, TEXT("SOFTWARE\\Kampi Corporation\\RunAs!"), 0, KEY_QUERY_VALUE ,&hKey ) == ERROR_SUCCESS )
{
if( RegQueryValueEx( hKey, TEXT("Password"), 0, &dwType, (LPBYTE)buf, &dwBufSize ) == ERROR_SUCCESS )
{
memset( szMsg, 0, sizeof( szMsg ) );
wsprintf ( szMsg, _T("%s"), buf );
mbstowcs( wpass, szMsg, 255 );
RegCloseKey( hKey );
}
else
{
char test[200];
sprintf(test,"Can not query for Password key value! EC: %d",GetLastError() );
MessageBox ( pCmdInfo->hwnd, test, _T("RunAs!"), MB_ICONERROR );
RegCloseKey( hKey );
return -1;
}
}
else
{
CSimpleShlExt::showerror( GetLastError(), pCmdInfo->hwnd, "RegOpenKeyEx failed for Password with error code :: " );
return -1;
}
if( RegOpenKeyEx( HKEY_CURRENT_USER, TEXT("SOFTWARE\\Kampi Corporation\\RunAs!"), 0, KEY_QUERY_VALUE ,&hKey ) == ERROR_SUCCESS )
{
if( RegQueryValueEx( hKey, TEXT("Domain"), 0, &dwType, (LPBYTE)buf, &dwBufSize ) == ERROR_SUCCESS )
{
memset( szMsg, 0, sizeof( szMsg ) );
wsprintf ( szMsg, _T("%s"), buf );
mbstowcs( wdomain, szMsg, 255 );
RegCloseKey( hKey );
}
else
{
char test[200];
sprintf(test,"Can not query for Password key value! EC: %d",GetLastError() );
MessageBox ( pCmdInfo->hwnd, test, _T("RunAs!"), MB_ICONERROR );
RegCloseKey( hKey );
return -1;
}
}
else
{
CSimpleShlExt::showerror( GetLastError(), pCmdInfo->hwnd, "RegOpenKeyEx failed for Domain with error code :: " );
return -1;
}
