1/*-
2 * Copyright (c) 2018, Juniper Networks, Inc.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
14 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
15 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
16 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
17 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
18 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
19 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25#include <sys/cdefs.h>
26/**
27 * @file veta.c - add to trust anchors
28 *
29 */
30
31#define NEED_BRSSL_H
32#include "libsecureboot-priv.h"
33#include <brssl.h>
34#include <sys/stat.h>
35#include <dirent.h>
36
37#ifdef VE_OPENPGP_SUPPORT
38#include "openpgp/packet.h"
39#endif
40
41/**
42 * @brief add trust anchors from a file
43 *
44 * The file might contain X.509 certs
45 * or OpenPGP public key
46 */
47static size_t
48trust_file_add(const char *trust)
49{
50	br_x509_certificate *xcs;
51	size_t num;
52
53	xcs = read_certificates(trust, &num);
54	if (xcs) {
55		num = ve_trust_anchors_add(xcs, num);
56	}
57#ifdef VE_OPENPGP_SUPPORT
58	else if (load_key_file(trust)) {
59		num = 1;
60	}
61#endif
62	return (num);
63}
64
65/**
66 * @brief add trust anchors from a directory
67 *
68 * Pass each file in directory to trust_file_add
69 */
70static size_t
71trust_dir_add(const char *trust)
72{
73	char fbuf[MAXPATHLEN];
74	DIR *dh;
75	struct dirent *de;
76	struct stat st;
77	ssize_t sz;
78	size_t num;
79
80	if (!(dh = opendir(trust)))
81		return (0);
82	for (num = 0, de = readdir(dh); de; de = readdir(dh)) {
83		if (de->d_name[0] == '.')
84			continue;
85		sz = snprintf(fbuf, sizeof(fbuf), "%s/%s", trust, de->d_name);
86		if (sz >= (ssize_t)sizeof(fbuf))
87			continue;
88		if (stat(fbuf, &st) < 0 || S_ISDIR(st.st_mode))
89			continue;
90		num += trust_file_add(fbuf);
91	}
92	closedir(dh);
93	return (num);
94}
95
96/**
97 * @brief add trust anchors
98 */
99int
100ve_trust_add(const char *trust)
101{
102	struct stat st;
103
104	if (stat(trust, &st) < 0)
105		return (-1);
106	if (S_ISDIR(st.st_mode))
107		return (trust_dir_add(trust));
108	return (trust_file_add(trust));
109}
110