1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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 * $FreeBSD$
31 */
32
33#ifndef EFISIGN_H
34#define	EFISIGN_H
35
36#include <stdbool.h>
37#include <openssl/evp.h>
38
39#define	DIGEST		"SHA256"
40#define	MAX_SECTIONS	128
41
42struct executable {
43	const char	*x_path;
44	FILE		*x_fp;
45
46	char		*x_buf;
47	size_t		x_len;
48
49	/*
50	 * Set by pe_parse(), used by digest().
51	 */
52	size_t		x_headers_len;
53
54	off_t		x_checksum_off;
55	size_t		x_checksum_len;
56
57	off_t		x_certificate_entry_off;
58	size_t		x_certificate_entry_len;
59
60	int		x_nsections;
61	off_t		x_section_off[MAX_SECTIONS];
62	size_t		x_section_len[MAX_SECTIONS];
63
64	/*
65	 * Computed by digest().
66	 */
67	unsigned char	x_digest[EVP_MAX_MD_SIZE];
68	unsigned int	x_digest_len;
69
70	/*
71	 * Received from the parent process, which computes it in sign().
72	 */
73	void		*x_signature;
74	size_t		x_signature_len;
75};
76
77
78FILE	*checked_fopen(const char *path, const char *mode);
79void	send_chunk(const void *buf, size_t len, int pipefd);
80void	receive_chunk(void **bufp, size_t *lenp, int pipefd);
81
82int	child(const char *inpath, const char *outpath, int pipefd,
83	    bool Vflag, bool vflag);
84
85void	parse(struct executable *x);
86void	update(struct executable *x);
87size_t	signature_size(const struct executable *x);
88void	show_certificate(const struct executable *x);
89void	range_check(const struct executable *x,
90	    off_t off, size_t len, const char *name);
91
92#endif /* !EFISIGN_H */
93