1 /* $NetBSD: bin2blob.c,v 1.1 2008/05/04 23:50:32 ad 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: bin2blob.c,v 1.1 2008/05/04 23:50:32 ad 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
54 int main(int, char **);
55
56 #define SIG 0x424c4f42
57
58 void
put(uint32_t val)59 put(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
76 int
main(int argc,char ** argv)77 main(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