usr.sbin/uefisign/uefisign.h

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2014 The FreeBSD Foundation
   5  * All rights reserved.
   6  *
   7  * This software was developed by Edward Tomasz Napierala under sponsorship
   8  * from the FreeBSD Foundation.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  * $FreeBSD: head/usr.sbin/uefisign/uefisign.h 328335 2018-01-24 16:33:33Z trasz $
  32  */
  33
  34 #ifndef EFISIGN_H
  35 #define EFISIGN_H
  36
  37 #include <stdbool.h>
  38 #include <openssl/evp.h>
  39
  40 #define DIGEST          "SHA256"
  41 #define MAX_SECTIONS    128
  42
  43 struct executable {
  44         const char      *x_path;
  45         FILE            *x_fp;
  46
  47         char            *x_buf;
  48         size_t          x_len;
  49
  50         /*
  51          * Set by pe_parse(), used by digest().
  52          */
  53         size_t          x_headers_len;
  54
  55         off_t           x_checksum_off;
  56         size_t          x_checksum_len;
  57
  58         off_t           x_certificate_entry_off;
  59         size_t          x_certificate_entry_len;
  60
  61         int             x_nsections;
  62         off_t           x_section_off[MAX_SECTIONS];
  63         size_t          x_section_len[MAX_SECTIONS];
  64
  65         /*
  66          * Computed by digest().
  67          */
  68         unsigned char   x_digest[EVP_MAX_MD_SIZE];
  69         unsigned int    x_digest_len;
  70
  71         /*
  72          * Received from the parent process, which computes it in sign().
  73          */
  74         void            *x_signature;
  75         size_t          x_signature_len;
  76 };
  77
  78
  79 FILE    *checked_fopen(const char *path, const char *mode);
  80 void    send_chunk(const void *buf, size_t len, int pipefd);
  81 void    receive_chunk(void **bufp, size_t *lenp, int pipefd);
  82
  83 int     child(const char *inpath, const char *outpath, int pipefd,
  84             bool Vflag, bool vflag);
  85
  86 void    parse(struct executable *x);
  87 void    update(struct executable *x);
  88 size_t  signature_size(const struct executable *x);
  89 void    show_certificate(const struct executable *x);
  90 void    range_check(const struct executable *x,
  91             off_t off, size_t len, const char *name);
  92
  93 #endif /* !EFISIGN_H */