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__FBSDID("$FreeBSD$");
27
28/**
29 * @file veta.c - add to trust anchors
30 *
31 */
32
33#define NEED_BRSSL_H
34#include "libsecureboot-priv.h"
35#include <brssl.h>
36#include <sys/stat.h>
37#include <dirent.h>
38
39#ifdef VE_OPENPGP_SUPPORT
40#include "openpgp/packet.h"
41#endif
42
43/**
44 * @brief add trust anchors from a file
45 *
46 * The file might contain X.509 certs
47 * or OpenPGP public key
48 */
49static size_t
50trust_file_add(const char *trust)
51{
52	br_x509_certificate *xcs;
53	size_t num;
54
55	xcs = read_certificates(trust, &num);
56	if (xcs) {
57		num = ve_trust_anchors_add(xcs, num);
58	}
59#ifdef VE_OPENPGP_SUPPORT
60	else if (load_key_file(trust)) {
61		num = 1;
62	}
63#endif
64	return (num);
65}
66
67/**
68 * @brief add trust anchors from a directory
69 *
70 * Pass each file in directory to trust_file_add
71 */
72static size_t
73trust_dir_add(const char *trust)
74{
75	char fbuf[MAXPATHLEN];
76	DIR *dh;
77	struct dirent *de;
78	struct stat st;
79	ssize_t sz;
80	size_t num;
81
82	if (!(dh = opendir(trust)))
83		return (0);
84	for (num = 0, de = readdir(dh); de; de = readdir(dh)) {
85		if (de->d_name[0] == '.')
86			continue;
87		sz = snprintf(fbuf, sizeof(fbuf), "%s/%s", trust, de->d_name);
88		if (sz >= (ssize_t)sizeof(fbuf))
89			continue;
90		if (stat(fbuf, &st) < 0 || S_ISDIR(st.st_mode))
91			continue;
92		num += trust_file_add(fbuf);
93	}
94	closedir(dh);
95	return (num);
96}
97
98/**
99 * @brief add trust anchors
100 */
101int
102ve_trust_add(const char *trust)
103{
104	struct stat st;
105
106	if (stat(trust, &st) < 0)
107		return (-1);
108	if (S_ISDIR(st.st_mode))
109		return (trust_dir_add(trust));
110	return (trust_file_add(trust));
111}
112