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 40 struct 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 76 FILE *checked_fopen(const char *path, const char *mode); 77 void send_chunk(const void *buf, size_t len, int pipefd); 78 void receive_chunk(void **bufp, size_t *lenp, int pipefd); 79 80 int child(const char *inpath, const char *outpath, int pipefd, 81 bool Vflag, bool vflag); 82 83 void parse(struct executable *x); 84 void update(struct executable *x); 85 size_t signature_size(const struct executable *x); 86 void show_certificate(const struct executable *x); 87 void range_check(const struct executable *x, 88 off_t off, size_t len, const char *name); 89 90 #endif /* !EFISIGN_H */ 91