Line data Source code
1 : /* posix-util.c - Utility functions for Posix
2 : Copyright (C) 2001 Werner Koch (dd9jn)
3 : Copyright (C) 2001, 2002, 2004 g10 Code GmbH
4 :
5 : This file is part of GPGME.
6 :
7 : GPGME is free software; you can redistribute it and/or modify it
8 : under the terms of the GNU Lesser General Public License as
9 : published by the Free Software Foundation; either version 2.1 of
10 : the License, or (at your option) any later version.
11 :
12 : GPGME is distributed in the hope that it will be useful, but
13 : WITHOUT ANY WARRANTY; without even the implied warranty of
14 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 : Lesser General Public License for more details.
16 :
17 : You should have received a copy of the GNU Lesser General Public
18 : License along with this program; if not, write to the Free Software
19 : Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
20 : 02111-1307, USA. */
21 :
22 : #ifdef HAVE_CONFIG_H
23 : #include <config.h>
24 : #endif
25 : #include <stdio.h>
26 : #include <stdlib.h>
27 : #include <string.h>
28 : #include <assert.h>
29 :
30 : #include "util.h"
31 : #include "sys-util.h"
32 : #include "debug.h"
33 :
34 : /* These variables store the malloced name of alternative default
35 : binaries. The are set only once by gpgme_set_global_flag. */
36 : static char *default_gpg_name;
37 : static char *default_gpgconf_name;
38 :
39 : /* Set the default name for the gpg binary. This function may only be
40 : called by gpgme_set_global_flag. Returns 0 on success. Leading
41 : directories are removed from NAME. */
42 : int
43 0 : _gpgme_set_default_gpg_name (const char *name)
44 : {
45 : const char *s;
46 :
47 0 : s = strrchr (name, '/');
48 0 : if (s)
49 0 : name = s + 1;
50 :
51 0 : if (!default_gpg_name)
52 0 : default_gpg_name = strdup (name);
53 0 : return !default_gpg_name;
54 : }
55 :
56 : /* Set the default name for the gpgconf binary. This function may
57 : only be called by gpgme_set_global_flag. Returns 0 on success.
58 : Leading directories are removed from NAME. */
59 : int
60 0 : _gpgme_set_default_gpgconf_name (const char *name)
61 : {
62 : const char *s;
63 :
64 0 : s = strrchr (name, '/');
65 0 : if (s)
66 0 : name = s + 1;
67 :
68 0 : if (!default_gpgconf_name)
69 0 : default_gpgconf_name = strdup (name);
70 0 : return !default_gpgconf_name;
71 : }
72 :
73 :
74 : /* Dummy function - see w32-util.c for the actual code. */
75 : int
76 0 : _gpgme_set_override_inst_dir (const char *dir)
77 : {
78 : (void)dir;
79 0 : return 0;
80 : }
81 :
82 :
83 : /* Find an executable program PGM along the envvar PATH. */
84 : static char *
85 98 : walk_path (const char *pgm)
86 : {
87 : const char *orig_path, *path, *s;
88 : char *fname, *p;
89 :
90 : #ifdef FIXED_SEARCH_PATH
91 : orig_path = FIXED_SEARCH_PATH;
92 : #else
93 98 : orig_path = getenv ("PATH");
94 98 : if (!orig_path)
95 0 : orig_path = "/bin:/usr/bin";
96 : #endif
97 :
98 98 : fname = malloc (strlen (orig_path) + 1 + strlen (pgm) + 1);
99 98 : if (!fname)
100 0 : return NULL;
101 :
102 98 : path = orig_path;
103 : for (;;)
104 : {
105 11368 : for (s=path, p=fname; *s && *s != ':'; s++, p++)
106 10486 : *p = *s;
107 490 : if (p != fname && p[-1] != '/')
108 490 : *p++ = '/';
109 490 : strcpy (p, pgm);
110 490 : if (!access (fname, X_OK))
111 98 : return fname;
112 392 : if (!*s)
113 0 : break;
114 392 : path = s + 1;
115 : }
116 :
117 0 : _gpgme_debug (DEBUG_ENGINE, "gpgme-walk_path: '%s' not found in '%s'",
118 : pgm, orig_path);
119 :
120 0 : free (fname);
121 0 : return NULL;
122 : }
123 :
124 :
125 : /* Return the full file name of the GPG binary. This function is used
126 : if gpgconf was not found and thus it can be assumed that gpg2 is
127 : not installed. This function is only called by get_gpgconf_item
128 : and may not be called concurrently. */
129 : char *
130 0 : _gpgme_get_gpg_path (void)
131 : {
132 0 : return walk_path (default_gpg_name? default_gpg_name : "gpg");
133 : }
134 :
135 :
136 : /* This function is only called by get_gpgconf_item and may not be
137 : called concurrently. */
138 : char *
139 98 : _gpgme_get_gpgconf_path (void)
140 : {
141 98 : return walk_path (default_gpgconf_name? default_gpgconf_name : "gpgconf");
142 : }
143 :
144 : /* See w32-util.c */
145 : int
146 0 : _gpgme_get_conf_int (const char *key, int *value)
147 : {
148 : (void)key;
149 : (void)value;
150 0 : return 0;
151 : }
152 :
153 : void
154 0 : _gpgme_allow_set_foreground_window (pid_t pid)
155 : {
156 : (void)pid;
157 : /* Not needed. */
158 0 : }
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