145 lines
3.6 KiB
C
145 lines
3.6 KiB
C
/* w32-util.c - Utility functions for the W32 API
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Copyright (C) 1999 Free Software Foundation, Inc
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Copyright (C) 2001 Werner Koch (dd9jn)
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Copyright (C) 2001, 2002, 2003 g10 Code GmbH
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This file is part of GPGME.
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GPGME is free software; you can redistribute it and/or modify it
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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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GPGME is distributed in the hope that it will be useful, but
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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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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GPGME; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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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 <assert.h>
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#include <errno.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <signal.h>
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#include <fcntl.h>
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#include <windows.h>
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#include <io.h>
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#include "util.h"
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#include "sema.h"
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DEFINE_STATIC_LOCK (get_path_lock);
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/* Return a string from the Win32 Registry or NULL in case of error.
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Caller must release the return value. A NULL for root is an alias
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for HKEY_CURRENT_USER. */
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static 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 directly. */
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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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n1 = nbytes + 1;
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result = malloc (n1);
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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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{
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free (result);
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result = NULL;
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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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static const char *
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find_program_in_registry (const char *name)
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{
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char *program = NULL;
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program = read_w32_registry_string (NULL, "Software\\GNU\\GnuPG", name);
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if (program)
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{
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int i;
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DEBUG2 ("found %s in registry: `%s'", name, program);
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for (i = 0; program[i]; i++)
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{
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if (program[i] == '/')
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program[i] = '\\';
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}
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}
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return program;
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}
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const char *
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_gpgme_get_gpg_path (void)
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{
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static char *gpg_program;
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LOCK (get_path_lock);
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if (!gpg_program)
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gpg_program = find_program_in_registry ("gpgProgram");
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#ifdef GPG_PATH
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if (!gpg_program)
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gpg_program = GPG_PATH;
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#endif
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UNLOCK (get_path_lock);
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return gpg_program;
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}
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const char *
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_gpgme_get_gpgsm_path (void)
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{
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static char *gpgsm_program;
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LOCK (get_path_lock);
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if (!gpgsm_program)
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gpgsm_program = find_program_in_registry ("gpgsmProgram");
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#ifdef GPGSM_PATH
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if (!gpgsm_program)
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gpgsm_program = GPGSM_PATH;
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#endif
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UNLOCK (get_path_lock);
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return gpgsm_program;
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}
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