1 /*
2 * gnome-keyring
3 *
4 * Copyright (C) 2008 Stefan Walter
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU Lesser General Public License as
8 * published by the Free Software Foundation; either version 2.1 of
9 * the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this program; if not, see
18 * <http://www.gnu.org/licenses/>.
19 */
20
21 #include "config.h"
22
23 #include "egg-libgcrypt.h"
24 #include "egg-secure-memory.h"
25
26 #include <glib.h>
27
28 #include <gcrypt.h>
29
30 #include <errno.h>
31 #include <pthread.h>
32
33 EGG_SECURE_DECLARE (libgcrypt);
34
35 static void
log_handler(gpointer unused,int unknown,const gchar * msg,va_list va)36 log_handler (gpointer unused, int unknown, const gchar *msg, va_list va)
37 {
38 /* TODO: Figure out additional arguments */
39 g_logv ("gcrypt", G_LOG_LEVEL_MESSAGE, msg, va);
40 }
41
42 static int
no_mem_handler(gpointer unused,size_t sz,unsigned int unknown)43 no_mem_handler (gpointer unused, size_t sz, unsigned int unknown)
44 {
45 /* TODO: Figure out additional arguments */
46 g_error ("couldn't allocate %lu bytes of memory",
47 (unsigned long int)sz);
48 return 0;
49 }
50
51 static void
fatal_handler(gpointer unused,int unknown,const gchar * msg)52 fatal_handler (gpointer unused, int unknown, const gchar *msg)
53 {
54 /* TODO: Figure out additional arguments */
55 g_log ("gcrypt", G_LOG_LEVEL_ERROR, "%s", msg);
56 }
57
58 #if GCRYPT_VERSION_NUMBER < 0x010600
59 GCRY_THREAD_OPTION_PTHREAD_IMPL;
60 #endif
61
62 void
egg_libgcrypt_initialize(void)63 egg_libgcrypt_initialize (void)
64 {
65 static volatile gsize gcrypt_initialized = 0;
66 unsigned seed;
67
68 if (g_once_init_enter (&gcrypt_initialized)) {
69
70 /* Only initialize libgcrypt if it hasn't already been initialized */
71 if (!gcry_control (GCRYCTL_INITIALIZATION_FINISHED_P)) {
72 #if GCRYPT_VERSION_NUMBER < 0x010600
73 gcry_control (GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread);
74 #endif
75 gcry_check_version (LIBGCRYPT_VERSION);
76 gcry_set_log_handler (log_handler, NULL);
77 gcry_set_outofcore_handler (no_mem_handler, NULL);
78 gcry_set_fatalerror_handler (fatal_handler, NULL);
79 gcry_set_allocation_handler ((gcry_handler_alloc_t)g_malloc,
80 (gcry_handler_alloc_t)egg_secure_alloc,
81 egg_secure_check,
82 (gcry_handler_realloc_t)egg_secure_realloc,
83 egg_secure_free);
84 gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
85 }
86
87 gcry_create_nonce (&seed, sizeof (seed));
88 srand (seed);
89
90 g_once_init_leave (&gcrypt_initialized, 1);
91 }
92 }
93