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/*-
* Copyright (c) 2014 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Edward Tomasz Napierala under sponsorship
* from the FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef EFISIGN_H
#define EFISIGN_H
#include <stdbool.h>
#include <openssl/evp.h>
#define DIGEST "SHA256"
#define MAX_SECTIONS 128
struct executable {
const char *x_path;
FILE *x_fp;
char *x_buf;
size_t x_len;
/*
* Set by pe_parse(), used by digest().
*/
size_t x_headers_len;
off_t x_checksum_off;
size_t x_checksum_len;
off_t x_certificate_entry_off;
size_t x_certificate_entry_len;
int x_nsections;
off_t x_section_off[MAX_SECTIONS];
size_t x_section_len[MAX_SECTIONS];
/*
* Computed by digest().
*/
unsigned char x_digest[EVP_MAX_MD_SIZE];
unsigned int x_digest_len;
/*
* Received from the parent process, which computes it in sign().
*/
void *x_signature;
size_t x_signature_len;
};
FILE *checked_fopen(const char *path, const char *mode);
void send_chunk(const void *buf, size_t len, int pipefd);
void receive_chunk(void **bufp, size_t *lenp, int pipefd);
int child(const char *inpath, const char *outpath, int pipefd,
bool Vflag, bool vflag);
void parse(struct executable *x);
void update(struct executable *x);
size_t signature_size(const struct executable *x);
void show_certificate(const struct executable *x);
void range_check(const struct executable *x,
off_t off, size_t len, const char *name);
#endif /* !EFISIGN_H */
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