1 /*- 2 * Copyright (c) 2014 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Edward Tomasz Napierala under sponsorship 6 * from the FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 #ifndef EFISIGN_H 33 #define EFISIGN_H 34 35 #include <stdbool.h> 36 #include <openssl/evp.h> 37 38 #define DIGEST "SHA256" 39 #define MAX_SECTIONS 128 40 41 struct executable { 42 const char *x_path; 43 FILE *x_fp; 44 45 char *x_buf; 46 size_t x_len; 47 48 /* 49 * Set by pe_parse(), used by digest(). 50 */ 51 size_t x_headers_len; 52 53 off_t x_checksum_off; 54 size_t x_checksum_len; 55 56 off_t x_certificate_entry_off; 57 size_t x_certificate_entry_len; 58 59 int x_nsections; 60 off_t x_section_off[MAX_SECTIONS]; 61 size_t x_section_len[MAX_SECTIONS]; 62 63 /* 64 * Computed by digest(). 65 */ 66 unsigned char x_digest[EVP_MAX_MD_SIZE]; 67 unsigned int x_digest_len; 68 69 /* 70 * Received from the parent process, which computes it in sign(). 71 */ 72 void *x_signature; 73 size_t x_signature_len; 74 }; 75 76 77 FILE *checked_fopen(const char *path, const char *mode); 78 void send_chunk(const void *buf, size_t len, int pipefd); 79 void receive_chunk(void **bufp, size_t *lenp, int pipefd); 80 81 int child(const char *inpath, const char *outpath, int pipefd, 82 bool Vflag, bool vflag); 83 84 void parse(struct executable *x); 85 void update(struct executable *x); 86 size_t signature_size(const struct executable *x); 87 void show_certificate(const struct executable *x); 88 void range_check(const struct executable *x, 89 off_t off, size_t len, const char *name); 90 91 #endif /* !EFISIGN_H */ 92