1/*	$NetBSD: main.c,v 1.3 2008/04/28 20:23:09 martin Exp $	*/
2
3/*-
4 * Copyright (c) 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/*
30 * Reads data from stdin (must be a regular file so we can do stat()), and
31 * outputs a 32-bit array of format:
32 *
33 * [0]	signature: BLOB
34 * [1]	original, uncompressed length
35 * [2]	length of compressed data that follows, unpadded
36 * [n]	zlib compressed data, padded to 4 bytes
37 */
38
39#include <sys/cdefs.h>
40#ifndef lint
41__RCSID("$NetBSD: main.c,v 1.3 2008/04/28 20:23:09 martin Exp $");
42#endif /* !lint */
43
44#include <sys/module.h>
45#include <sys/stat.h>
46
47#include <stdio.h>
48#include <stdlib.h>
49#include <unistd.h>
50#include <string.h>
51#include <err.h>
52#include <zlib.h>
53
54int	main(int, char **);
55
56#define	SIG	0x424c4f42
57
58void
59put(uint32_t val)
60{
61	static int n;
62
63	switch (n) {
64	case 6:
65		putc('\n', stdout);
66		n = 0;
67		/* FALLTHROUGH */
68	case 0:
69		putc('\t', stdout);
70		break;
71	}
72	printf("0x%08x,", val);
73	n++;
74}
75
76int
77main(int argc, char **argv)
78{
79	struct stat sb;
80	uint8_t *src, *dst;
81	u_long slen, dlen;
82	uint32_t *dp;
83
84	if (fstat(STDIN_FILENO, &sb) < 0)
85		err(1, "stat(stdin)");
86
87	src = malloc(sb.st_size);
88	dlen = sb.st_size * 1002 / 1000 + 12 + 3 + 4*2;
89	dst = malloc(dlen);
90	if (src == NULL || dst == NULL)
91		errx(1, "malloc");
92
93	if (read(STDIN_FILENO, src, sb.st_size) != sb.st_size)
94		errx(1, "read");
95
96	slen = sb.st_size;
97	memset(dst, 0, dlen);
98	if (compress2(dst, &dlen, src, slen, 9) != Z_OK)
99		errx(1, "compress2");
100
101	printf("static const uint32_t blob[] = {\n");
102	put(SIG);
103	put(slen);
104	put(dlen);
105	dlen = ((dlen + 3) & ~3) >> 2;
106	dp = (uint32_t *)dst;
107	while (dlen--)
108		put(*dp++);
109	printf("\n};\n");
110
111	exit(EXIT_SUCCESS);
112}
113