422 lines
9.6 KiB
C
422 lines
9.6 KiB
C
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//////////////////////////////////////////////////////////////////////////////
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//
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// REGISTRY.C
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//
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// Microsoft Confidential
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// Copyright (cMicrosoft Corporation 1998
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// All rights reserved
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//
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// Registry functions for the application to easily interface with the
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// registry.
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//
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// 4/98 - Jason Cohen (JCOHEN)
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//
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//////////////////////////////////////////////////////////////////////////////
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// Include files
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//
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#include <windows.h>
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#include "jcohen.h"
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#include "registry.h"
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BOOL RegExists(HKEY hKeyReg, LPTSTR lpKey, LPTSTR lpValue)
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{
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HKEY hOpenKey = NULL;
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BOOL bExists = FALSE;
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if (lpKey)
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{
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if (RegOpenKeyEx(hKeyReg, lpKey, 0, KEY_ALL_ACCESS, &hOpenKey) != ERROR_SUCCESS)
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return bExists;
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}
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else
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hOpenKey = hKeyReg;
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if (lpValue)
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bExists = (RegQueryValueEx(hOpenKey, lpValue, NULL, NULL, NULL, NULL) == ERROR_SUCCESS);
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else
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bExists = TRUE;
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if (lpKey)
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RegCloseKey(hOpenKey);
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return bExists;
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}
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BOOL RegDelete(HKEY hRootKey, LPTSTR lpSubKey, LPTSTR lpValue) {
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BOOL bSuccess = FALSE;
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if (lpValue) {
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if (lpSubKey) {
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HKEY hRegKey;
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if (RegOpenKeyEx(hRootKey, lpSubKey, 0, KEY_ALL_ACCESS, &hRegKey) == ERROR_SUCCESS) {
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bSuccess = (RegDeleteValue(hRegKey, lpValue) == ERROR_SUCCESS);
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RegCloseKey(hRegKey);
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}
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}
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else
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bSuccess = (RegDeleteValue(hRootKey, lpValue) == ERROR_SUCCESS);
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}
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else
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bSuccess = (RegDeleteKey(hRootKey, lpSubKey) == ERROR_SUCCESS);
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return bSuccess;
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}
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LPTSTR RegGetString(HKEY hKeyReg, LPTSTR lpKey, LPTSTR lpValue) {
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HKEY hOpenKey = NULL;
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LPTSTR lpBuffer = NULL,
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lpExpand = NULL;
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DWORD dwSize = 0,
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dwType;
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// If the key is specified, we must open it. Otherwise we can
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// just use the HKEY passed in.
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//
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if (lpKey)
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{
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// If the open key fails, return NULL because the value can't exist.
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//
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if (RegOpenKeyEx(hKeyReg, lpKey, 0, KEY_ALL_ACCESS, &hOpenKey) != ERROR_SUCCESS)
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return NULL;
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}
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else
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hOpenKey = hKeyReg;
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// Now query the value to get the size to allocate. Make sure the date
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// type is a string and that the malloc doesn't fail.
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//
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if ( ( RegQueryValueEx(hOpenKey, lpValue, NULL, &dwType, NULL, &dwSize) == ERROR_SUCCESS ) &&
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( ( dwType == REG_SZ ) || ( dwType == REG_EXPAND_SZ ) ) &&
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( lpBuffer = (LPTSTR) MALLOC(dwSize) ) )
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{
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// We know the value exists and we have the memory we need to query the value again.
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//
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if ( ( RegQueryValueEx(hOpenKey, lpValue, NULL, NULL, (LPBYTE) lpBuffer, &dwSize) == ERROR_SUCCESS ) &&
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( ( dwType == REG_SZ ) || ( dwType == REG_EXPAND_SZ ) ) )
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{
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// We should expand it if it is supposed to be.
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//
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if ( dwType == REG_EXPAND_SZ )
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{
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if ( ( dwSize = ExpandEnvironmentStrings(lpBuffer, NULL, 0) ) &&
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( lpExpand = (LPTSTR) MALLOC(dwSize) ) &&
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( ExpandEnvironmentStrings(lpBuffer, lpExpand, dwSize) ) &&
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( *lpExpand ) )
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{
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// The expand workd, so free the original buffer and return
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// the expanded one.
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//
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FREE(lpBuffer);
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lpBuffer = lpExpand;
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}
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else
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{
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// The expand failed see we should free everything up
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// and return NULL.
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//
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FREE(lpExpand);
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FREE(lpBuffer);
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}
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}
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}
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else
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// For some reason the query failed, that shouldn't happen
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// but now we need to free and return NULL.
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//
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FREE(lpBuffer);
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}
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// If we opened a key, we must close it.
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//
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if (lpKey)
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RegCloseKey(hOpenKey);
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// Return the buffer allocated, or NULL if something failed.
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//
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return lpBuffer;
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}
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LPVOID RegGetBin(HKEY hKeyReg, LPTSTR lpKey, LPTSTR lpValue) {
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HKEY hOpenKey = NULL;
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LPVOID lpBuffer = NULL;
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DWORD dwSize = 0,
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dwType;
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// If the key is specified, we must open it. Otherwise we can
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// just use the HKEY passed in.
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//
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if (lpKey)
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{
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// If the open key fails, return NULL because the value can't exist.
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//
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if (RegOpenKeyEx(hKeyReg, lpKey, 0, KEY_ALL_ACCESS, &hOpenKey) != ERROR_SUCCESS)
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return NULL;
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}
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else
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hOpenKey = hKeyReg;
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// Now query the value to get the size to allocate. Make sure the date
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// type is a string and that the malloc doesn't fail.
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//
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if ( ( RegQueryValueEx(hOpenKey, lpValue, NULL, &dwType, NULL, &dwSize) == ERROR_SUCCESS ) &&
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( dwType == REG_BINARY ) &&
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( lpBuffer = MALLOC(dwSize) ) )
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{
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// We know the value exists and we have the memory we need to query the value again.
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//
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if ( ( RegQueryValueEx(hOpenKey, lpValue, NULL, NULL, (LPBYTE) lpBuffer, &dwSize) != ERROR_SUCCESS ) ||
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( dwType != REG_BINARY ) )
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// For some reason the query failed, that shouldn't happen
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// but now we need to free and return NULL.
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//
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FREE(lpBuffer);
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}
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// If we opened a key, we must close it.
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//
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if (lpKey)
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RegCloseKey(hOpenKey);
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// Return the buffer allocated, or NULL if something failed.
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//
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return lpBuffer;
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}
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DWORD RegGetDword(HKEY hKeyReg, LPTSTR lpKey, LPTSTR lpValue) {
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HKEY hOpenKey = NULL;
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DWORD dwBuffer,
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dwSize = sizeof(DWORD),
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dwType;
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if (lpKey) {
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if (RegOpenKeyEx(hKeyReg, lpKey, 0, KEY_ALL_ACCESS, &hOpenKey) != ERROR_SUCCESS)
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return 0;
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}
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else
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hOpenKey = hKeyReg;
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if ( (RegQueryValueEx(hOpenKey, lpValue, NULL, &dwType, (LPBYTE) &dwBuffer, &dwSize) != ERROR_SUCCESS) ||
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(dwSize != sizeof(DWORD)) )
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dwBuffer = 0;
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if (lpKey)
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RegCloseKey(hOpenKey);
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return dwBuffer;
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}
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BOOL RegSetString(HKEY hRootKey, LPTSTR lpSubKey, LPTSTR lpValue, LPTSTR lpData) {
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BOOL bSuccess = FALSE;
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if (lpSubKey) {
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HKEY hRegKey;
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DWORD dwBuffer;
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if (RegCreateKeyEx(hRootKey, lpSubKey, 0, TEXT(""), 0, KEY_ALL_ACCESS, NULL, &hRegKey, &dwBuffer) == ERROR_SUCCESS) {
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bSuccess = (RegSetValueEx(hRegKey, lpValue, 0, REG_SZ, (CONST BYTE *) lpData, lstrlen(lpData) + 1) == ERROR_SUCCESS);
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RegCloseKey(hRegKey);
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}
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}
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else
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bSuccess = (RegSetValueEx(hRootKey, lpValue, 0, REG_SZ, (CONST BYTE *) lpData, lstrlen(lpData) + 1) == ERROR_SUCCESS);
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return bSuccess;
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}
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BOOL RegSetDword(HKEY hRootKey, LPTSTR lpSubKey, LPTSTR lpValue, DWORD dwData) {
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BOOL bSuccess = FALSE;
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if (lpSubKey) {
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HKEY hRegKey;
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DWORD dwBuffer;
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if (RegCreateKeyEx(hRootKey, lpSubKey, 0, TEXT(""), 0, KEY_ALL_ACCESS, NULL, &hRegKey, &dwBuffer) == ERROR_SUCCESS) {
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bSuccess = (RegSetValueEx(hRegKey, lpValue, 0, REG_DWORD, (CONST BYTE *) &dwData, sizeof(dwData)) == ERROR_SUCCESS);
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RegCloseKey(hRegKey);
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}
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}
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else
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bSuccess = (RegSetValueEx(hRootKey, lpValue, 0, REG_SZ, (CONST BYTE *) &dwData, sizeof(dwData)) == ERROR_SUCCESS);
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return bSuccess;
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}
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BOOL RegCheck(HKEY hKeyRoot, LPTSTR lpKey, LPTSTR lpValue)
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{
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LPTSTR lpBuffer;
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DWORD dwSize = 0,
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dwType,
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dwBuffer = 0;
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HKEY hKeyReg;
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BOOL bReturn = FALSE;
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if (lpKey)
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{
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if (RegOpenKeyEx(hKeyRoot, lpKey, 0, KEY_ALL_ACCESS, &hKeyReg) != ERROR_SUCCESS)
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return 0;
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}
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else
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hKeyReg = hKeyRoot;
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// Query for the value and allocate the memory for the
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// value data if it is type REG_SZ.
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//
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if (RegQueryValueEx(hKeyReg, lpValue, NULL, &dwType, NULL, &dwSize) == ERROR_SUCCESS)
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{
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if (dwType == REG_SZ)
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{
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// It is a string value, must allocate a buffer for the string.
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//
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if (lpBuffer = (LPTSTR) MALLOC(dwSize))
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{
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if ( (RegQueryValueEx(hKeyReg, lpValue, NULL, NULL, (LPBYTE) lpBuffer, &dwSize) == ERROR_SUCCESS) &&
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(*lpBuffer != '0') && (*lpBuffer) )
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{
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dwBuffer = 1;
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}
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FREE(lpBuffer);
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}
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}
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else
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{
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// Must be a DWORD or BIN value.
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//
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RegQueryValueEx(hKeyReg, lpValue, NULL, &dwType, (LPBYTE) &dwBuffer, &dwSize);
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}
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bReturn = (dwBuffer != 0);
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}
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if (lpKey)
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RegCloseKey(hKeyReg);
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return bReturn;
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}
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BOOL RegEnumKeys(HKEY hKey, LPTSTR lpRegKey, REGENUMKEYPROC hCallBack, LPARAM lParam, BOOL bDelKeys)
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{
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TCHAR szKeyName[MAX_PATH + 1];
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DWORD dwIndex = 0,
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dwSize = sizeof(szKeyName);
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HKEY hKeyReg,
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hKeyEnum;
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BOOL bReturn = TRUE;
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// Open a key handle to the key to enumerate.
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//
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if ( ( lpRegKey == NULL ) ||
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( RegOpenKeyEx(hKey, lpRegKey, 0, KEY_ALL_ACCESS, &hKeyReg) == ERROR_SUCCESS ) )
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{
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// Enumerate all the subkeys in this key.
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//
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while ( bReturn && ( RegEnumKeyEx(hKeyReg, dwIndex, szKeyName, &dwSize, NULL, NULL, NULL, NULL) == ERROR_SUCCESS ) )
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{
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if ( RegOpenKeyEx(hKeyReg, szKeyName, 0, KEY_ALL_ACCESS, &hKeyEnum) == ERROR_SUCCESS )
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{
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bReturn = hCallBack(hKeyEnum, szKeyName, lParam);
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RegCloseKey(hKeyEnum);
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}
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if ( !bDelKeys || ( RegDeleteKey(hKeyReg, szKeyName) != ERROR_SUCCESS ) )
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dwIndex++;
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dwSize = sizeof(szKeyName);
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}
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if (lpRegKey)
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RegCloseKey(hKeyReg);
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}
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else
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bReturn = FALSE;
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return bReturn;
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}
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BOOL RegEnumValues(HKEY hKey, LPTSTR lpRegKey, REGENUMVALPROC hCallBack, LPARAM lParam, BOOL bDelValues) {
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TCHAR szValueName[MAX_PATH + 1];
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LPTSTR lpBuffer;
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DWORD dwIndex = 0,
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dwSize = sizeof(szValueName),
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dwDataSize = 0,
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dwType;
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HKEY hKeyReg;
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BOOL bReturn = TRUE;
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// Open a key handle to the key to enumerate.
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//
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if ( (lpRegKey == NULL) ||
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(RegOpenKeyEx(hKey, lpRegKey, 0, KEY_ALL_ACCESS, &hKeyReg) == ERROR_SUCCESS) ) {
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// Enumerate all the values in this key.
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//
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while (bReturn && (RegEnumValue(hKeyReg, dwIndex, szValueName, &dwSize, NULL, &dwType, NULL, &dwDataSize) == ERROR_SUCCESS)) {
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if ((dwType == REG_SZ) &&
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(lpBuffer = (LPTSTR) MALLOC(dwDataSize))) {
|
||
|
|
|
||
|
|
if (RegQueryValueEx(hKeyReg, szValueName, NULL, NULL, (LPBYTE) lpBuffer, &dwDataSize) == ERROR_SUCCESS)
|
||
|
|
bReturn = hCallBack(szValueName, lpBuffer, lParam);
|
||
|
|
|
||
|
|
FREE(lpBuffer);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( !bDelValues || (RegDeleteValue(hKeyReg, szValueName) != ERROR_SUCCESS) )
|
||
|
|
dwIndex++;
|
||
|
|
|
||
|
|
dwSize = sizeof(szValueName);
|
||
|
|
dwDataSize = 0;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (lpRegKey)
|
||
|
|
RegCloseKey(hKeyReg);
|
||
|
|
|
||
|
|
}
|
||
|
|
else
|
||
|
|
bReturn = FALSE;
|
||
|
|
|
||
|
|
return bReturn;
|
||
|
|
}
|