159 lines
3.8 KiB
C
159 lines
3.8 KiB
C
/* posix-util.c - Utility functions for Posix
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Copyright (C) 2001 Werner Koch (dd9jn)
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Copyright (C) 2001, 2002, 2004 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 Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of
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the License, or (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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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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 "util.h"
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#include "sys-util.h"
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#include "debug.h"
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/* These variables store the malloced name of alternative default
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binaries. The are set only once by gpgme_set_global_flag. */
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static char *default_gpg_name;
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static char *default_gpgconf_name;
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/* Set the default name for the gpg binary. This function may only be
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called by gpgme_set_global_flag. Returns 0 on success. Leading
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directories are removed from NAME. */
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int
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_gpgme_set_default_gpg_name (const char *name)
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{
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const char *s;
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s = strrchr (name, '/');
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if (s)
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name = s + 1;
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if (!default_gpg_name)
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default_gpg_name = strdup (name);
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return !default_gpg_name;
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}
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/* Set the default name for the gpgconf binary. This function may
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only be called by gpgme_set_global_flag. Returns 0 on success.
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Leading directories are removed from NAME. */
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int
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_gpgme_set_default_gpgconf_name (const char *name)
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{
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const char *s;
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s = strrchr (name, '/');
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if (s)
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name = s + 1;
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if (!default_gpgconf_name)
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default_gpgconf_name = strdup (name);
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return !default_gpgconf_name;
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}
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/* Dummy function - see w32-util.c for the actual code. */
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int
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_gpgme_set_override_inst_dir (const char *dir)
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{
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(void)dir;
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return 0;
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}
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/* Find an executable program PGM along the envvar PATH. */
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static char *
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walk_path (const char *pgm)
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{
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const char *orig_path, *path, *s;
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char *fname, *p;
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#ifdef FIXED_SEARCH_PATH
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orig_path = FIXED_SEARCH_PATH;
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#else
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orig_path = getenv ("PATH");
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if (!orig_path)
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orig_path = "/bin:/usr/bin";
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#endif
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fname = malloc (strlen (orig_path) + 1 + strlen (pgm) + 1);
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if (!fname)
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return NULL;
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path = orig_path;
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for (;;)
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{
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for (s=path, p=fname; *s && *s != ':'; s++, p++)
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*p = *s;
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if (p != fname && p[-1] != '/')
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*p++ = '/';
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strcpy (p, pgm);
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if (!access (fname, X_OK))
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return fname;
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if (!*s)
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break;
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path = s + 1;
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}
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_gpgme_debug (DEBUG_ENGINE, "gpgme-walk_path: '%s' not found in '%s'",
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pgm, orig_path);
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free (fname);
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return NULL;
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}
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/* Return the full file name of the GPG binary. This function is used
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if gpgconf was not found and thus it can be assumed that gpg2 is
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not installed. This function is only called by get_gpgconf_item
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and may not be called concurrently. */
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char *
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_gpgme_get_gpg_path (void)
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{
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return walk_path (default_gpg_name? default_gpg_name : "gpg");
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}
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/* This function is only called by get_gpgconf_item and may not be
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called concurrently. */
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char *
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_gpgme_get_gpgconf_path (void)
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{
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return walk_path (default_gpgconf_name? default_gpgconf_name : "gpgconf");
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}
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/* See w32-util.c */
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int
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_gpgme_get_conf_int (const char *key, int *value)
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{
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(void)key;
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(void)value;
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return 0;
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}
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void
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_gpgme_allow_set_foreground_window (pid_t pid)
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{
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(void)pid;
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/* Not needed. */
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}
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