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Sweden-Number/programs/regedit/edit.c

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/*
* Registry editing UI functions.
*
* Copyright (C) 2003 Dimitrie O. Paun
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define WIN32_LEAN_AND_MEAN /* Exclude rarely-used stuff from Windows headers */
#include <windows.h>
#include <tchar.h>
#include <commctrl.h>
#include <commdlg.h>
#include <cderr.h>
#include <stdlib.h>
#include <stdio.h>
#include <shellapi.h>
#include <shlwapi.h>
#include "main.h"
#include "regproc.h"
#include "resource.h"
static const TCHAR* editValueName;
static TCHAR* stringValueData;
static BOOL isDecimal;
struct edit_params
{
HKEY hKey;
LPCTSTR lpszValueName;
void *pData;
LONG cbData;
};
static INT vmessagebox(HWND hwnd, INT buttons, INT titleId, INT resId, va_list ap)
{
TCHAR title[256];
TCHAR errfmt[1024];
TCHAR errstr[1024];
if (!LoadString(hInst, titleId, title, COUNT_OF(title)))
lstrcpy(title, "Error");
if (!LoadString(hInst, resId, errfmt, COUNT_OF(errfmt)))
lstrcpy(errfmt, "Unknown error string!");
_vsntprintf(errstr, COUNT_OF(errstr), errfmt, ap);
return MessageBox(hwnd, errstr, title, buttons);
}
static INT messagebox(HWND hwnd, INT buttons, INT titleId, INT resId, ...)
{
va_list ap;
INT result;
va_start(ap, resId);
result = vmessagebox(hwnd, buttons, titleId, resId, ap);
va_end(ap);
return result;
}
static void error(HWND hwnd, INT resId, ...)
{
va_list ap;
va_start(ap, resId);
vmessagebox(hwnd, MB_OK | MB_ICONERROR, IDS_ERROR, resId, ap);
va_end(ap);
}
static void error_code_messagebox(HWND hwnd, DWORD error_code)
{
LPTSTR lpMsgBuf;
DWORD status;
TCHAR title[256];
static const TCHAR fallback[] = TEXT("Error displaying error message.\n");
if (!LoadString(hInst, IDS_ERROR, title, COUNT_OF(title)))
lstrcpy(title, TEXT("Error"));
status = FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
NULL, error_code, 0, (LPTSTR)&lpMsgBuf, 0, NULL);
if (!status)
lpMsgBuf = (LPTSTR)fallback;
MessageBox(hwnd, lpMsgBuf, title, MB_OK | MB_ICONERROR);
if (lpMsgBuf != fallback)
LocalFree(lpMsgBuf);
}
static BOOL change_dword_base(HWND hwndDlg, BOOL toHex)
{
TCHAR buf[128];
DWORD val;
if (!GetDlgItemText(hwndDlg, IDC_VALUE_DATA, buf, COUNT_OF(buf))) return FALSE;
if (!_stscanf(buf, toHex ? "%ld" : "%lx", &val)) return FALSE;
wsprintf(buf, toHex ? "%lx" : "%ld", val);
return SetDlgItemText(hwndDlg, IDC_VALUE_DATA, buf);
}
static INT_PTR CALLBACK modify_dlgproc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
TCHAR* valueData;
HWND hwndValue;
int len;
switch(uMsg) {
case WM_INITDIALOG:
SetDlgItemText(hwndDlg, IDC_VALUE_NAME, editValueName);
SetDlgItemText(hwndDlg, IDC_VALUE_DATA, stringValueData);
CheckRadioButton(hwndDlg, IDC_DWORD_HEX, IDC_DWORD_DEC, isDecimal ? IDC_DWORD_DEC : IDC_DWORD_HEX);
return TRUE;
case WM_COMMAND:
switch (LOWORD(wParam)) {
case IDC_DWORD_HEX:
if (isDecimal && change_dword_base(hwndDlg, TRUE)) isDecimal = FALSE;
break;
case IDC_DWORD_DEC:
if (!isDecimal && change_dword_base(hwndDlg, FALSE)) isDecimal = TRUE;
break;
case IDOK:
if ((hwndValue = GetDlgItem(hwndDlg, IDC_VALUE_DATA))) {
len = GetWindowTextLength(hwndValue);
if ((valueData = HeapReAlloc(GetProcessHeap(), 0, stringValueData, (len + 1) * sizeof(TCHAR)))) {
stringValueData = valueData;
if (!GetWindowText(hwndValue, stringValueData, len + 1))
*stringValueData = 0;
}
}
/* Fall through */
case IDCANCEL:
EndDialog(hwndDlg, wParam);
return TRUE;
}
}
return FALSE;
}
static INT_PTR CALLBACK bin_modify_dlgproc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
struct edit_params *params;
LPBYTE pData;
LONG cbData;
LONG lRet;
switch(uMsg) {
case WM_INITDIALOG:
params = (struct edit_params *)lParam;
SetWindowLongPtr(hwndDlg, DWLP_USER, (ULONG_PTR)params);
if (params->lpszValueName)
SetDlgItemText(hwndDlg, IDC_VALUE_NAME, params->lpszValueName);
else
SetDlgItemText(hwndDlg, IDC_VALUE_NAME, g_pszDefaultValueName);
SendDlgItemMessage(hwndDlg, IDC_VALUE_DATA, HEM_SETDATA, (WPARAM)params->cbData, (LPARAM)params->pData);
return TRUE;
case WM_COMMAND:
switch (LOWORD(wParam)) {
case IDOK:
params = (struct edit_params *)GetWindowLongPtr(hwndDlg, DWLP_USER);
cbData = SendDlgItemMessage(hwndDlg, IDC_VALUE_DATA, HEM_GETDATA, 0, 0);
pData = HeapAlloc(GetProcessHeap(), 0, cbData);
if (pData)
{
SendDlgItemMessage(hwndDlg, IDC_VALUE_DATA, HEM_GETDATA, (WPARAM)cbData, (LPARAM)pData);
lRet = RegSetValueEx(params->hKey, params->lpszValueName, 0, REG_BINARY, pData, cbData);
}
else
lRet = ERROR_OUTOFMEMORY;
if (lRet == ERROR_SUCCESS)
EndDialog(hwndDlg, 1);
else
{
error_code_messagebox(hwndDlg, lRet);
EndDialog(hwndDlg, 0);
}
return TRUE;
case IDCANCEL:
EndDialog(hwndDlg, 0);
return TRUE;
}
}
return FALSE;
}
static BOOL check_value(HWND hwnd, HKEY hKey, LPCTSTR valueName)
{
LONG lRet = RegQueryValueEx(hKey, valueName ? valueName : _T(""), 0, NULL, 0, NULL);
if(lRet != ERROR_SUCCESS) return FALSE;
return TRUE;
}
static LPTSTR read_value(HWND hwnd, HKEY hKey, LPCTSTR valueName, DWORD *lpType, LONG *len)
{
DWORD valueDataLen;
LPTSTR buffer = NULL;
LONG lRet;
lRet = RegQueryValueEx(hKey, valueName ? valueName : _T(""), 0, lpType, 0, &valueDataLen);
if (lRet != ERROR_SUCCESS) {
if (lRet == ERROR_FILE_NOT_FOUND && !valueName) { /* no default value here, make it up */
if (len) *len = 1;
if (lpType) *lpType = REG_SZ;
buffer = HeapAlloc(GetProcessHeap(), 0, 1);
*buffer = '\0';
return buffer;
}
error(hwnd, IDS_BAD_VALUE, valueName);
goto done;
}
if ( *lpType == REG_DWORD ) valueDataLen = sizeof(DWORD);
if (!(buffer = HeapAlloc(GetProcessHeap(), 0, valueDataLen))) {
error(hwnd, IDS_TOO_BIG_VALUE, valueDataLen);
goto done;
}
lRet = RegQueryValueEx(hKey, valueName, 0, 0, buffer, &valueDataLen);
if (lRet != ERROR_SUCCESS) {
error(hwnd, IDS_BAD_VALUE, valueName);
goto done;
}
if(len) *len = valueDataLen;
return buffer;
done:
HeapFree(GetProcessHeap(), 0, buffer);
return NULL;
}
BOOL CreateKey(HWND hwnd, HKEY hKeyRoot, LPCTSTR keyPath, LPTSTR keyName)
{
BOOL result = FALSE;
LONG lRet = ERROR_SUCCESS;
HKEY retKey;
TCHAR newKey[MAX_NEW_KEY_LEN - 4];
int keyNum;
HKEY hKey;
lRet = RegOpenKeyEx(hKeyRoot, keyPath, 0, KEY_CREATE_SUB_KEY, &hKey);
if (lRet != ERROR_SUCCESS) {
error_code_messagebox(hwnd, lRet);
goto done;
}
if (!LoadString(GetModuleHandle(0), IDS_NEWKEY, newKey, COUNT_OF(newKey))) goto done;
/* try to find out a name for the newly create key (max 100 times) */
for (keyNum = 1; keyNum < 100; keyNum++) {
wsprintf(keyName, newKey, keyNum);
lRet = RegOpenKey(hKey, keyName, &retKey);
if (lRet != ERROR_SUCCESS) break;
RegCloseKey(retKey);
}
if (lRet == ERROR_SUCCESS) goto done;
lRet = RegCreateKey(hKey, keyName, &retKey);
if (lRet != ERROR_SUCCESS) {
error_code_messagebox(hwnd, lRet);
goto done;
}
result = TRUE;
done:
RegCloseKey(retKey);
return result;
}
BOOL ModifyValue(HWND hwnd, HKEY hKeyRoot, LPCTSTR keyPath, LPCTSTR valueName)
{
BOOL result = FALSE;
DWORD type;
LONG lRet;
HKEY hKey;
LONG len;
lRet = RegOpenKeyEx(hKeyRoot, keyPath, 0, KEY_READ | KEY_SET_VALUE, &hKey);
if (lRet != ERROR_SUCCESS) {
error_code_messagebox(hwnd, lRet);
return FALSE;
}
editValueName = valueName ? valueName : g_pszDefaultValueName;
if(!(stringValueData = read_value(hwnd, hKey, valueName, &type, &len))) goto done;
if ( (type == REG_SZ) || (type == REG_EXPAND_SZ) ) {
if (DialogBox(0, MAKEINTRESOURCE(IDD_EDIT_STRING), hwnd, modify_dlgproc) == IDOK) {
lRet = RegSetValueEx(hKey, valueName, 0, type, stringValueData, lstrlen(stringValueData) + 1);
if (lRet == ERROR_SUCCESS) result = TRUE;
else error_code_messagebox(hwnd, lRet);
}
} else if ( type == REG_DWORD ) {
wsprintf(stringValueData, isDecimal ? "%ld" : "%lx", *((DWORD*)stringValueData));
if (DialogBox(0, MAKEINTRESOURCE(IDD_EDIT_DWORD), hwnd, modify_dlgproc) == IDOK) {
DWORD val;
if (_stscanf(stringValueData, isDecimal ? "%ld" : "%lx", &val)) {
lRet = RegSetValueEx(hKey, valueName, 0, type, (BYTE*)&val, sizeof(val));
if (lRet == ERROR_SUCCESS) result = TRUE;
else error_code_messagebox(hwnd, lRet);
}
}
} else if ( type == REG_BINARY ) {
struct edit_params params;
params.hKey = hKey;
params.lpszValueName = valueName;
params.pData = stringValueData;
params.cbData = len;
result = DialogBoxParam(NULL, MAKEINTRESOURCE(IDD_EDIT_BINARY), hwnd,
bin_modify_dlgproc, (LPARAM)&params);
} else {
error(hwnd, IDS_UNSUPPORTED_TYPE, type);
}
done:
HeapFree(GetProcessHeap(), 0, stringValueData);
stringValueData = NULL;
RegCloseKey(hKey);
return result;
}
BOOL DeleteKey(HWND hwnd, HKEY hKeyRoot, LPCTSTR keyPath)
{
BOOL result = FALSE;
LONG lRet;
HKEY hKey;
lRet = RegOpenKeyEx(hKeyRoot, keyPath, 0, KEY_READ|KEY_SET_VALUE, &hKey);
if (lRet != ERROR_SUCCESS) {
error_code_messagebox(hwnd, lRet);
return FALSE;
}
if (messagebox(hwnd, MB_YESNO | MB_ICONEXCLAMATION, IDS_DELETE_BOX_TITLE, IDS_DELETE_BOX_TEXT, keyPath) != IDYES)
goto done;
lRet = SHDeleteKey(hKeyRoot, keyPath);
if (lRet != ERROR_SUCCESS) {
error(hwnd, IDS_BAD_KEY, keyPath);
goto done;
}
result = TRUE;
done:
RegCloseKey(hKey);
return result;
}
BOOL DeleteValue(HWND hwnd, HKEY hKeyRoot, LPCTSTR keyPath, LPCTSTR valueName)
{
BOOL result = FALSE;
LONG lRet;
HKEY hKey;
LPCSTR visibleValueName = valueName ? valueName : g_pszDefaultValueName;
lRet = RegOpenKeyEx(hKeyRoot, keyPath, 0, KEY_READ | KEY_SET_VALUE, &hKey);
if (lRet != ERROR_SUCCESS) return FALSE;
if (messagebox(hwnd, MB_YESNO | MB_ICONEXCLAMATION, IDS_DELETE_BOX_TITLE, IDS_DELETE_BOX_TEXT, visibleValueName) != IDYES)
goto done;
lRet = RegDeleteValue(hKey, valueName ? valueName : "");
if (lRet != ERROR_SUCCESS && valueName) {
error(hwnd, IDS_BAD_VALUE, valueName);
}
if (lRet != ERROR_SUCCESS) goto done;
result = TRUE;
done:
RegCloseKey(hKey);
return result;
}
BOOL CreateValue(HWND hwnd, HKEY hKeyRoot, LPCTSTR keyPath, DWORD valueType, LPTSTR valueName)
{
LONG lRet = ERROR_SUCCESS;
TCHAR newValue[256];
DWORD valueDword = 0;
BOOL result = FALSE;
int valueNum;
HKEY hKey;
lRet = RegOpenKeyEx(hKeyRoot, keyPath, 0, KEY_READ | KEY_SET_VALUE, &hKey);
if (lRet != ERROR_SUCCESS) {
error_code_messagebox(hwnd, lRet);
return FALSE;
}
if (!LoadString(GetModuleHandle(0), IDS_NEWVALUE, newValue, COUNT_OF(newValue))) goto done;
/* try to find out a name for the newly create key (max 100 times) */
for (valueNum = 1; valueNum < 100; valueNum++) {
wsprintf(valueName, newValue, valueNum);
lRet = RegQueryValueEx(hKey, valueName, 0, 0, 0, 0);
if (lRet == ERROR_FILE_NOT_FOUND) break;
}
if (lRet != ERROR_FILE_NOT_FOUND) {
error_code_messagebox(hwnd, lRet);
goto done;
}
lRet = RegSetValueEx(hKey, valueName, 0, valueType, (BYTE*)&valueDword, sizeof(DWORD));
if (lRet != ERROR_SUCCESS) {
error_code_messagebox(hwnd, lRet);
goto done;
}
result = TRUE;
done:
RegCloseKey(hKey);
return result;
}
BOOL RenameValue(HWND hwnd, HKEY hKeyRoot, LPCTSTR keyPath, LPCTSTR oldName, LPCTSTR newName)
{
LPTSTR value = NULL;
DWORD type;
LONG len, lRet;
BOOL result = FALSE;
HKEY hKey;
if (!oldName) return FALSE;
if (!newName) return FALSE;
lRet = RegOpenKeyEx(hKeyRoot, keyPath, 0, KEY_READ | KEY_SET_VALUE, &hKey);
if (lRet != ERROR_SUCCESS) {
error_code_messagebox(hwnd, lRet);
return FALSE;
}
/* check if value already exists */
if (check_value(hwnd, hKey, newName)) goto done;
value = read_value(hwnd, hKey, oldName, &type, &len);
if(!value) goto done;
lRet = RegSetValueEx(hKey, newName, 0, type, (BYTE*)value, len);
if (lRet != ERROR_SUCCESS) {
error_code_messagebox(hwnd, lRet);
goto done;
}
lRet = RegDeleteValue(hKey, oldName);
if (lRet != ERROR_SUCCESS) {
RegDeleteValue(hKey, newName);
error_code_messagebox(hwnd, lRet);
goto done;
}
result = TRUE;
done:
HeapFree(GetProcessHeap(), 0, value);
RegCloseKey(hKey);
return result;
}
BOOL RenameKey(HWND hwnd, HKEY hRootKey, LPCTSTR keyPath, LPCTSTR newName)
{
LPTSTR parentPath = 0;
LPCTSTR srcSubKey = 0;
HKEY parentKey = 0;
HKEY destKey = 0;
BOOL result = FALSE;
LONG lRet;
DWORD disposition;
if (!keyPath || !newName) return FALSE;
if (!strrchr(keyPath, '\\')) {
parentKey = hRootKey;
srcSubKey = keyPath;
} else {
parentPath = strdup(keyPath);
srcSubKey = strrchr(parentPath, '\\') + 1;
*((LPTSTR)srcSubKey - 1) = 0;
lRet = RegOpenKeyEx(hRootKey, parentPath, 0, KEY_READ | KEY_CREATE_SUB_KEY, &parentKey);
if (lRet != ERROR_SUCCESS) {
error_code_messagebox(hwnd, lRet);
goto done;
}
}
/* The following fails if the old name is the same as the new name. */
if (!strcmp(srcSubKey, newName)) goto done;
lRet = RegCreateKeyEx(parentKey, newName, 0, NULL, REG_OPTION_NON_VOLATILE,
KEY_WRITE, NULL /* FIXME */, &destKey, &disposition);
if (disposition == REG_OPENED_EXISTING_KEY)
lRet = ERROR_FILE_EXISTS; /* FIXME: we might want a better error message than this */
if (lRet != ERROR_SUCCESS) {
error_code_messagebox(hwnd, lRet);
goto done;
}
/* FIXME: SHCopyKey does not copy the security attributes */
lRet = SHCopyKey(parentKey, srcSubKey, destKey, 0);
if (lRet != ERROR_SUCCESS) {
RegCloseKey(destKey);
RegDeleteKey(parentKey, newName);
error_code_messagebox(hwnd, lRet);
goto done;
}
lRet = SHDeleteKey(hRootKey, keyPath);
if (lRet != ERROR_SUCCESS) {
error_code_messagebox(hwnd, lRet);
goto done;
}
result = TRUE;
done:
RegCloseKey(destKey);
if (parentKey) {
RegCloseKey(parentKey);
free(parentPath);
}
return result;
}
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