1/*-
2 * Copyright (c) 2019 Stormshield.
3 * Copyright (c) 2019 Semihalf.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
18 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
20 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
22 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
23 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
24 * POSSIBILITY OF SUCH DAMAGE.
25 *
26 */
27
28#include <sys/cdefs.h>
29#define NEED_BRSSL_H
30#include "../libsecureboot-priv.h"
31#include <brssl.h>
32
33void
34ve_efi_init(void)
35{
36	br_x509_certificate *xcs;
37	hash_data *digests;
38	size_t num;
39	int result;
40	static int once = 0;
41
42	if (once > 0)
43		return;
44
45	once = 1;
46
47	result = efi_secure_boot_enabled();
48	if (result <= 0)
49		return;
50
51	xcs = efi_get_trusted_certs(&num);
52	if (num > 0 && xcs != NULL) {
53		num = ve_trust_anchors_add(xcs, num);
54		free_certificates(xcs, num);
55	}
56	xcs = efi_get_forbidden_certs(&num);
57	if (num > 0 && xcs != NULL) {
58		num = ve_forbidden_anchors_add(xcs, num);
59		free_certificates(xcs, num);
60	}
61	digests = efi_get_forbidden_digests(&num);
62	if (num > 0 && digests != NULL) {
63		ve_forbidden_digest_add(digests, num);
64		/*
65		 * Don't free the buffors for digests,
66		 * since they are shallow copied.
67		 */
68		xfree(digests);
69	}
70
71	return;
72}
73