1999-10-08 18:42:57 +00:00
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/* w32reg.c - MS-Windows Registry access
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* Copyright (C) 1999 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* GnuPG 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; 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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#include <config.h>
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#ifdef __MINGW32__ /* This module is only used in this environment */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include <windows.h>
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#include "util.h"
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#include "memory.h"
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/****************
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* Return a string from the Win32 Registry or NULL in case of
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* error. Caller must release the return value. A NUKK for root
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* is an alias fro HKEY_CURRENT_USER
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* NOTE: The value is allocated with a plain malloc() - use free() and not
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* the usual m_free()!!!
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*/
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char *
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read_w32_registry_string( const char *root, const char *dir, const char *name )
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{
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HKEY root_key, key_handle;
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DWORD n1, nbytes;
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char *result = NULL;
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if( !root )
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root_key = HKEY_CURRENT_USER;
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else if( !strcmp( root, "HKEY_CLASSES_ROOT" ) )
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root_key = HKEY_CLASSES_ROOT;
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else if( !strcmp( root, "HKEY_CURRENT_USER" ) )
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root_key = HKEY_CURRENT_USER;
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else if( !strcmp( root, "HKEY_LOCAL_MACHINE" ) )
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root_key = HKEY_LOCAL_MACHINE;
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else if( !strcmp( root, "HKEY_USERS" ) )
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root_key = HKEY_USERS;
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else if( !strcmp( root, "HKEY_PERFORMANCE_DATA" ) )
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root_key = HKEY_PERFORMANCE_DATA;
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else if( !strcmp( root, "HKEY_CURRENT_CONFIG" ) )
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root_key = HKEY_CURRENT_CONFIG;
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else
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return NULL;
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if( RegOpenKeyEx( root_key, dir, 0, KEY_READ, &key_handle ) )
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return NULL; /* no need for a RegClose, so return direct */
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nbytes = 1;
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if( RegQueryValueEx( key_handle, name, 0, NULL, NULL, &nbytes ) )
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goto leave;
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result = malloc( (n1=nbytes+1) );
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if( !result )
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goto leave;
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if( RegQueryValueEx( key_handle, name, 0, NULL, result, &n1 ) ) {
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1999-10-09 18:37:05 +00:00
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free(result); result = NULL;
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1999-10-08 18:42:57 +00:00
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goto leave;
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}
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result[nbytes] = 0; /* make sure it is really a string */
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leave:
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RegCloseKey( key_handle );
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return result;
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}
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#endif /* __MINGW32__ */
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