usr.sbin/uefisign/uefisign.h

   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: head/usr.sbin/uefisign/uefisign.h 279315 2015-02-26 09:15:24Z trasz $
  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 */