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bin2blob.c revision 1.1.6.2 
      1 /*	$NetBSD: bin2blob.c,v 1.1.6.2 2008/05/18 12:34:12 yamt 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 1.1.6.2 2008/05/18 12:34:12 yamt 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
     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
     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