267 lines
7.7 KiB
C
267 lines
7.7 KiB
C
/*
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* WineCfg configuration management
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*
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* Copyright 2002 Jaco Greeff
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* Copyright 2003 Dimitrie O. Paun
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* Copyright 2003 Mike Hearn
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <assert.h>
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#include <stdio.h>
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#include <limits.h>
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#include <windows.h>
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#include <winreg.h>
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#include <wine/debug.h>
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WINE_DEFAULT_DEBUG_CHANNEL(winecfg);
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#include "winecfg.h"
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HKEY configKey = NULL;
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int initialize(void) {
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DWORD res = RegCreateKey(HKEY_LOCAL_MACHINE, WINE_KEY_ROOT, &configKey);
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if (res != ERROR_SUCCESS) {
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WINE_ERR("RegOpenKey failed on wine config key (%ld)\n", res);
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return 1;
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}
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return 0;
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}
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/*****************************************************************************
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* getConfigValue: Retrieves a configuration value from the registry
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*
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* char *subKey : the name of the config section
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* char *valueName : the name of the config value
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* char *defaultResult : if the key isn't found, return this value instead
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*
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* Returns a buffer holding the value if successful, NULL if not. Caller is responsible for freeing the result.
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*
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*/
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char *getConfigValue (char *subkey, char *valueName, char *defaultResult)
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{
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char *buffer = NULL;
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DWORD dataLength;
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HKEY hSubKey = NULL;
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DWORD res;
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WINE_TRACE("subkey=%s, valueName=%s, defaultResult=%s\n", subkey, valueName, defaultResult);
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res = RegOpenKeyEx( configKey, subkey, 0, KEY_ALL_ACCESS, &hSubKey );
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if(res != ERROR_SUCCESS) {
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if( res==ERROR_FILE_NOT_FOUND )
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{
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WINE_TRACE("Section key not present - using default\n");
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return strdup(defaultResult);
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}
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else
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{
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WINE_ERR("RegOpenKey failed on wine config key (res=%ld)\n", res);
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}
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goto end;
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}
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res = RegQueryValueExA( hSubKey, valueName, NULL, NULL, NULL, &dataLength);
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if( res == ERROR_FILE_NOT_FOUND ) {
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WINE_TRACE("Value not present - using default\n");
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buffer = strdup(defaultResult);
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goto end;
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} else if( res!=ERROR_SUCCESS ) {
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WINE_ERR("Couldn't query value's length (res=%ld)\n", res );
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goto end;
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}
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buffer = malloc(dataLength);
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if( buffer==NULL )
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{
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WINE_ERR("Couldn't allocate %lu bytes for the value\n", dataLength );
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goto end;
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}
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RegQueryValueEx(hSubKey, valueName, NULL, NULL, (LPBYTE)buffer, &dataLength);
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end:
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if( hSubKey!=NULL )
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RegCloseKey( hSubKey );
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return buffer;
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}
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/*****************************************************************************
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* setConfigValue : Sets a configuration key in the registry. Section will be created if it doesn't already exist
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*
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* HKEY hCurrent : the registry key that the configuration is rooted at
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* char *subKey : the name of the config section
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* char *valueName : the name of the config value
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* char *value : the value to set the configuration key to
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*
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* Returns 0 on success, non-zero otherwise
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*
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*/
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int setConfigValue (char *subkey, char *valueName, const char *value) {
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DWORD res = 1;
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HKEY key = NULL;
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WINE_TRACE("subkey=%s, valueName=%s, value=%s\n", subkey, valueName, value);
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assert( subkey != NULL );
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assert( valueName != NULL );
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assert( value != NULL );
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res = RegCreateKey(configKey, subkey, &key);
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if (res != ERROR_SUCCESS) goto end;
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res = RegSetValueEx(key, valueName, 0, REG_SZ, value, strlen(value) + 1);
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if (res != ERROR_SUCCESS) goto end;
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res = 0;
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end:
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if (key) RegCloseKey(key);
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if (res != 0) WINE_ERR("Unable to set configuration key %s in section %s to %s, res=%ld\n", valueName, subkey, value, res);
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return res;
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}
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/* returns 0 on success, an HRESULT from the registry funtions otherwise */
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HRESULT doesConfigValueExist(char *subkey, char *valueName) {
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HRESULT hr;
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HKEY key;
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WINE_TRACE("subkey=%s, valueName=%s - ", subkey, valueName);
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hr = RegOpenKeyEx(configKey, subkey, 0, KEY_READ, &key);
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if (hr != S_OK) {
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WINE_TRACE("no: subkey does not exist\n");
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return hr;
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}
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hr = RegQueryValueEx(key, valueName, NULL, NULL, NULL, NULL);
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if (hr != S_OK) {
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WINE_TRACE("no: key does not exist\n");
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return hr;
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}
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RegCloseKey(key);
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WINE_TRACE("yes\n");
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return S_OK;
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}
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/* removes the requested value from the registry, however, does not remove the section if empty. Returns S_OK (0) on success. */
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HRESULT removeConfigValue(char *subkey, char *valueName) {
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HRESULT hr;
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HKEY key;
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WINE_TRACE("subkey=%s, valueName=%s\n", subkey, valueName);
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hr = RegOpenKeyEx(configKey, subkey, 0, KEY_READ, &key);
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if (hr != S_OK) return hr;
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hr = RegDeleteValue(key, valueName);
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if (hr != ERROR_SUCCESS) return hr;
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return S_OK;
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}
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/* ========================================================================= */
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/* Transaction management code */
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struct transaction *tqhead, *tqtail;
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int instantApply = 1;
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void destroyTransaction(struct transaction *trans) {
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assert( trans != NULL );
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WINE_TRACE("destroying %p\n", trans);
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free(trans->section);
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free(trans->key);
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if (trans->newValue) free(trans->newValue);
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if (trans->next) trans->next->prev = trans->prev;
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if (trans->prev) trans->prev->next = trans->next;
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if (trans == tqhead) tqhead = NULL;
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if (trans == tqtail) tqtail = NULL;
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free(trans);
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}
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void addTransaction(char *section, char *key, enum transaction_action action, char *newValue) {
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struct transaction *trans = malloc(sizeof(struct transaction));
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assert( section != NULL );
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assert( key != NULL );
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if (action == ACTION_SET) assert( newValue != NULL );
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trans->section = strdup(section);
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trans->key = strdup(key);
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trans->newValue = strdup(newValue);
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trans->action = action;
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trans->next = NULL;
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trans->prev = NULL;
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if (tqtail == NULL) {
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tqtail = trans;
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tqhead = tqtail;
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} else {
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tqhead->next = trans;
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trans->prev = tqhead;
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tqhead = trans;
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}
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if (instantApply) {
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processTransaction(trans);
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destroyTransaction(trans);
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}
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}
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void processTransaction(struct transaction *trans) {
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if (trans->action == ACTION_SET) {
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WINE_TRACE("Setting %s\\%s to '%s'\n", trans->section, trans->key, trans->newValue);
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setConfigValue(trans->section, trans->key, trans->newValue);
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} else if (trans->action == ACTION_REMOVE) {
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WINE_TRACE("Removing %s\\%s", trans->section, trans->key);
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removeConfigValue(trans->section, trans->key);
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}
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/* TODO: implement notifications here */
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}
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void processTransQueue(void)
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{
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WINE_TRACE("\n");
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while (tqtail != NULL) {
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struct transaction *next = tqtail->next;
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processTransaction(tqtail);
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destroyTransaction(tqtail);
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tqtail = next;
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}
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}
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/* ================================== utility functions ============================ */
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/* returns a string with the window text of the dialog item. user is responsible for freeing the result */
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char *getDialogItemText(HWND hDlg, WORD controlID) {
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HWND item = GetDlgItem(hDlg, controlID);
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int len = GetWindowTextLength(item) + 1;
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char *result = malloc(len);
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if (GetWindowText(item, result, len) == 0) return NULL;
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return result;
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}
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