1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2014 The FreeBSD Foundation
5 *
6 * This software was developed by Edward Tomasz Napierala under sponsorship
7 * from the FreeBSD Foundation.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 */
30
31#ifndef EFISIGN_H
32#define	EFISIGN_H
33
34#include <stdbool.h>
35#include <openssl/evp.h>
36
37#define	DIGEST		"SHA256"
38#define	MAX_SECTIONS	128
39
40struct executable {
41	const char	*x_path;
42	FILE		*x_fp;
43
44	char		*x_buf;
45	size_t		x_len;
46
47	/*
48	 * Set by pe_parse(), used by digest().
49	 */
50	size_t		x_headers_len;
51
52	off_t		x_checksum_off;
53	size_t		x_checksum_len;
54
55	off_t		x_certificate_entry_off;
56	size_t		x_certificate_entry_len;
57
58	int		x_nsections;
59	off_t		x_section_off[MAX_SECTIONS];
60	size_t		x_section_len[MAX_SECTIONS];
61
62	/*
63	 * Computed by digest().
64	 */
65	unsigned char	x_digest[EVP_MAX_MD_SIZE];
66	unsigned int	x_digest_len;
67
68	/*
69	 * Received from the parent process, which computes it in sign().
70	 */
71	void		*x_signature;
72	size_t		x_signature_len;
73};
74
75
76FILE	*checked_fopen(const char *path, const char *mode);
77void	send_chunk(const void *buf, size_t len, int pipefd);
78void	receive_chunk(void **bufp, size_t *lenp, int pipefd);
79
80int	child(const char *inpath, const char *outpath, int pipefd,
81	    bool Vflag, bool vflag);
82
83void	parse(struct executable *x);
84void	update(struct executable *x);
85size_t	signature_size(const struct executable *x);
86void	show_certificate(const struct executable *x);
87void	range_check(const struct executable *x,
88	    off_t off, size_t len, const char *name);
89
90#endif /* !EFISIGN_H */
91