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gnupg/common/w32-reg.c
Werner Koch ea7aba6e60
gpgconf: Improve registry dumping.
* common/w32-reg.c (read_w32_reg_string): Add arg r_hklm_fallback and
change all callers.
(show_configs): Indicate whether the HKLM fallback was used.
* tools/gpgconf.c (show_other_registry_entries): Fix the Outlook Addin
Registry key.  Indicate whether the HKLM fallback was used.
--

Note that this is  backport from 2.2.  The new support there for
REG_DWORD needs to be implemented in libgpg-error, though.
2022-08-02 14:35:38 +02:00

123 lines
3.4 KiB
C

/* w32-reg.c - MS-Windows Registry access
* Copyright (C) 1999, 2002, 2007 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute and/or modify this
* part of GnuPG under the terms of either
*
* - the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* or
*
* - the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* or both in parallel, as here.
*
* GnuPG 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
* General Public License for more details.
*
* You should have received a copies of the GNU General Public License
* and the GNU Lesser General Public License along with this program;
* if not, see <https://www.gnu.org/licenses/>.
*/
#include <config.h>
#ifdef HAVE_W32_SYSTEM
/* This module is only used in this environment */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
#include <windows.h>
#include "util.h"
#include "common-defs.h"
#include "utf8conv.h"
#include "w32help.h"
/* Return a string from the Win32 Registry or NULL in case of error.
Caller must release the return value. A NULL for root is an alias
for HKEY_CURRENT_USER, HKEY_LOCAL_MACHINE in turn. */
char *
read_w32_registry_string (const char *root, const char *dir, const char *name)
{
return gpgrt_w32_reg_query_string (root, dir, name);
}
/* Compact version of read_w32_registry_string. This version expects
* a single string as key described here using an example:
*
* HKCU\Software\GNU\GnuPG:HomeDir
*
* HKCU := the class, other supported classes are HKLM, HKCR, HKU, and
* HKCC. If no class is given and the string thus starts with
* a backslash HKCU with a fallback to HKLM is used.
* Software\GNU\GnuPG := The actual key.
* HomeDir := the name of the item. The name is optional to use the default
* value.
*
* Note that the first backslash and the first colon act as delimiters.
*
* Returns a malloced string or NULL if not found. If R_HKLM_FALLBACK
* is not NULL, no class was given, and the result came from HKLM,
* true is stored there.
*/
char *
read_w32_reg_string (const char *key_arg, int *r_hklm_fallback)
{
char *key;
char *p1, *p2;
char *result, *result2;
if (r_hklm_fallback)
*r_hklm_fallback = 0;
if (!key_arg)
return NULL;
key = xtrystrdup (key_arg);
if (!key)
{
log_info ("warning: malloc failed while reading registry key\n");
return NULL;
}
p1 = strchr (key, '\\');
if (!p1)
{
xfree (key);
return NULL;
}
*p1++ = 0;
p2 = strchr (p1, ':');
if (p2)
*p2++ = 0;
result = gpgrt_w32_reg_query_string (*key? key : NULL, p1, p2);
if (result && !*key && r_hklm_fallback)
{
/* No key given - see whether the result came from HKCU or HKLM. */
result2 = gpgrt_w32_reg_query_string ("HKCU", p1, p2);
if (result2)
xfree (result2);
else
*r_hklm_fallback = 1;
}
xfree (key);
return result;
}
#endif /*HAVE_W32_SYSTEM*/