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/* $MirOS: contrib/hosted/fwcf/wraps.c,v 1.7 2006/09/26 10:25:03 tg Exp $ */
/*-
* Copyright (c) 2006
* Thorsten Glaser <tg@mirbsd.de>
*
* Licensee is hereby permitted to deal in this work without restric-
* tion, including unlimited rights to use, publicly perform, modify,
* merge, distribute, sell, give away or sublicence, provided all co-
* pyright notices above, these terms and the disclaimer are retained
* in all redistributions or reproduced in accompanying documentation
* or other materials provided with binary redistributions.
*
* Licensor offers the work "AS IS" and WITHOUT WARRANTY of any kind,
* express, or implied, to the maximum extent permitted by applicable
* law, without malicious intent or gross negligence; in no event may
* licensor, an author or contributor be held liable for any indirect
* or other damage, or direct damage except proven a consequence of a
* direct error of said person and intended use of this work, loss or
* other issues arising in any way out of its use, even if advised of
* the possibility of such damage or existence of a defect.
*/
#include <sys/param.h>
#include <err.h>
#ifdef DEBUG
#include <stdio.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "defs.h"
#include "adler.h"
#include "compress.h"
#include "fts_subs.h"
#include "pack.h"
#include "sysdeps.h"
__RCSID("$MirOS: contrib/hosted/fwcf/wraps.c,v 1.7 2006/09/26 10:25:03 tg Exp $");
char *
fwcf_packm(const char *dir, int algo, size_t *dstsz)
{
char empty_data = 0, *data, *f_data = NULL;
size_t i;
if (dir == NULL) {
data = &empty_data;
i = 1;
} else {
ftsf_start(dir);
data = (f_data = ft_packm()) + sizeof (size_t);
i = *(size_t *)f_data - sizeof (size_t);
}
data = fwcf_pack(data, i, algo, dstsz);
if (f_data != NULL)
free(f_data);
return (data);
}
char *
fwcf_pack(char *odata, size_t i, int algo, size_t *dstsz)
{
int j;
size_t k;
char *data, *cdata;
if (i > 0xFFFFFF)
errx(1, "inner size of %lu too large", (u_long)i);
#ifdef DEBUG
fprintf(stderr, "fwcf_pack: algo %02X packing %lu\n", algo, (u_long)i);
#endif
if ((j = compressor_get(algo)->compress(&cdata, odata, i)) == -1)
errx(1, "%s compression failed", compressor_get(algo)->name);
/* 12 bytes header, padding to 4-byte boundary, 4 bytes trailer */
k = ((j + 19) / 4) * 4;
/* padded to size of flash block */
#if (DEF_FLASHBLOCK & 3)
# error DEF_FLASHBLOCK must be dword-aligned
#endif
*dstsz = ((k + (DEF_FLASHBLOCK - 1)) / DEF_FLASHBLOCK) * DEF_FLASHBLOCK;
if ((data = malloc(*dstsz)) == NULL)
err(1, "malloc");
mkheader(data, *dstsz, k, i, algo);
memcpy(data + 12, cdata, j);
free(cdata);
k = j + 12;
while (k & 3)
data[k++] = 0;
mktrailer(data, k);
k += 4;
pull_rndata((uint8_t *)data + k, *dstsz - k);
return (data);
}
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