This commit is contained in:
geos_one 2011-10-28 10:47:55 +00:00
parent 912efd0c9b
commit 1688697ea2
5 changed files with 112 additions and 84 deletions

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@ -1,7 +1,13 @@
# ChangeLog for app-arch/rpm5offset # ChangeLog for app-arch/rpm5offset
# Copyright 1999-2009 Gentoo Foundation; Distributed under the GPL v2 # Copyright 1999-2011 Gentoo Foundation; Distributed under the GPL v2
# $Header: $ # $Header: $
*rpm5offset-9.0-r2 (28 Oct 2011)
28 Oct 2011; Mario Fetka <mario.fetka@gmail.com> -rpm5offset-9.0.ebuild,
-rpm5offset-9.0-r1.ebuild, +rpm5offset-9.0-r2.ebuild, files/rpmoffset.c:
Bump
*rpm5offset-9.0-r1 (09 Sep 2009) *rpm5offset-9.0-r1 (09 Sep 2009)
09 Sep 2009; Mario Fetka <mario.fetka@gmail.com> 09 Sep 2009; Mario Fetka <mario.fetka@gmail.com>

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AUX rpmoffset.c 1964 RMD160 acea626f5080b7ea47863cf9e3bc2ab3b381c61e SHA1 5ec35b3d37773ca4a09443c6ea687c7d3a739f34 SHA256 e1e18d68009bd4541d6c65b43f45b58d720b9c87eba612d7616e244142f80dfe AUX rpmoffset.c 2755 RMD160 00f9a7e8dd8117eded73ead581e7bce9c40ed5af SHA1 cbe8b9f226c03d9b2b988d756adf507857bc47ce SHA256 b43c6bf2c3623d3fbc304ff3a804cf568caa7cd2d702ff5043ac8eda3c4fb42d
EBUILD rpm5offset-9.0-r1.ebuild 653 RMD160 4da00e851208ae017289a981bf221125bed1300e SHA1 d7585e5c0953ae6106dcd1dd16eb4ac14c11b80a SHA256 84511d3c96d0269d0105cd2aede19170f7b421bea7bc921de47da221320e4139 EBUILD rpm5offset-9.0-r2.ebuild 653 RMD160 2f85563f7df4e5548f241bb1ee870a311f9587bb SHA1 c242da35e6e69aa1fd8514c5a03977fd7c837f09 SHA256 74aed2a38c21a7be598b6f60ac9820807ff9ee2ab29023863faad265fb00107a
EBUILD rpm5offset-9.0.ebuild 628 RMD160 cf664dc26a5305e9d85b29ef89f9a1faf26bbae2 SHA1 c08ecbb217ffa829d134544c78fbbeb451510193 SHA256 5b9561a70c0dece76fb9e4f94690e8b8cf143dd98edf08d13938a922ce0eaef5 MISC ChangeLog 551 RMD160 097d5f93696e887e988fed531abda20ca9628152 SHA1 8f7cb8b55fb8f2ce542fb10cbd6e96723a472ac4 SHA256 0e1b6be4ddf6c2e697320ee1e1bdea987c5a8fa7f55b7f60147e89ff26d5ea83
MISC ChangeLog 359 RMD160 bf3896dfe95be868cff866614fe45990b1ade8e0 SHA1 de47c41139412e2e786222dd562b5ed8df0e36f5 SHA256 10185acde0bf53f6596e95e8fdc496e0a209dc7790b92a2e07f8370620b3a1cf
MISC metadata.xml 170 RMD160 645927a396fdc21cdeb089fe42c5397332420ea6 SHA1 ac7f48a14fec325926f9ce1be8fbf1f311b4f2e4 SHA256 d797a2ec6f9dc516c9f9c1a758ee87ad3e8c43101b5dc76c2f872d5bd4639b42 MISC metadata.xml 170 RMD160 645927a396fdc21cdeb089fe42c5397332420ea6 SHA1 ac7f48a14fec325926f9ce1be8fbf1f311b4f2e4 SHA256 d797a2ec6f9dc516c9f9c1a758ee87ad3e8c43101b5dc76c2f872d5bd4639b42

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/* Wouldn't it be a lot more sane if we could just untar these things? */ /* Wouldn't it be a lot more sane if we could just untar these things? */
#include <stdlib.h> #ifndef _GNU_SOURCE
# define _GNU_SOURCE
#endif
#include <stdint.h>
#include <stdio.h> #include <stdio.h>
#include <string.h>
/* These offsets keep getting bigger, so we're going to just bite a 2MB */ #ifndef ARRAY_SIZE
/* chunk of RAM right away so that we have enough. Yeah, horrible */ # define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
/* quick and dirty implementation, but hey -- it gets the job done. */ #endif
#ifndef BUFSIZ
# define BUFSIZ 8192
#endif
#define RPMBUFSIZ 3145728 typedef struct {
const char *type;
const unsigned char *magic;
const size_t len;
} magic_t;
main() /* LZMA is some fuzzy crap */
int is_magic_lzma(const char *buf)
{ {
char *buff = malloc(RPMBUFSIZ),*eb,*p; return (buf[0] == 0x5d && buf[4] < 0x20) &&
for (p = buff, eb = buff + read(0,buff,RPMBUFSIZ); p < eb; p++) (!memcmp(buf + 10, "\x00\x00\x00", 3) ||
{ !memcmp(buf + 5, "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF", 8));
}
#define magic_lzma_len 13
/* gzip format */ static const unsigned char magic_gzip[] = { '\037', '\213', '\010' };
if (*p == '\037' && p[1] == '\213' && p[2] == '\010') static const unsigned char magic_bzip2[] = { 'B', 'Z', 'h' };
{ static const unsigned char magic_xz[] = { 0xFD, '7', 'z', 'X', 'Z', 0x00 };
printf("%ld\n",p - buff); static const magic_t magics[] = {
exit(0); #define DECLARE_MAGIC_T(t) { .type = #t, .magic = magic_##t, .len = sizeof(magic_##t), },
DECLARE_MAGIC_T(gzip)
DECLARE_MAGIC_T(bzip2)
DECLARE_MAGIC_T(xz)
#undef DECLARE_MAGIC_T
};
#define MAGIC_SIZE_MIN 3
#define MAGIC_SIZE_MAX 13
static int show_magic;
static int magic_finish(const char *magic, size_t offset)
{
if (show_magic)
printf("%s ", magic);
printf("%zu\n", offset);
return 0;
}
int main(int argc, char *argv[])
{
size_t i, read_cnt, offset, left, lzma_offset;
FILE *fp = stdin;
char p[BUFSIZ];
if (argc == 2 && !strcmp(argv[1], "-v")) {
show_magic = 1;
--argc;
}
if (argc != 1) {
puts("Usage: rpmoffset < rpmfile");
return 1;
}
/* fp = fopen(argv[1], "r"); */
lzma_offset = 0;
offset = left = 0;
while (1) {
read_cnt = fread(p + left, 1, sizeof(p) - left, fp);
if (read_cnt + left < MAGIC_SIZE_MIN)
break;
for (i = 0; i < ARRAY_SIZE(magics); ++i) {
const char *needle;
if (read_cnt + left < magics[i].len)
continue;
needle = memmem(p, sizeof(p), magics[i].magic, magics[i].len);
if (needle)
return magic_finish(magics[i].type, offset + (needle - p));
} }
/* bzip2 format */ /* Scan for LZMA magic, but don't return yet ... */
else if (*p == 'B' && p[1] == 'Z' && p[2] == 'h' ) if (!lzma_offset && read_cnt + left >= magic_lzma_len) {
{ for (i = 0; i <= read_cnt + left - magic_lzma_len; ++i)
printf("%ld\n",p - buff); if (is_magic_lzma(p + i)) {
exit(0); lzma_offset = offset + i;
break;
}
} }
/* LZMA files; both LZMA_Alone and LZMA utils formats. The LZMA_Alone memmove(p, p + left + read_cnt - MAGIC_SIZE_MIN + 1, MAGIC_SIZE_MIN - 1);
* format is used by the LZMA_Alone tool from LZMA SDK. The LZMA utils
* format is the default format of LZMA utils 4.32.1 and later. */
/* LZMA utils format */ offset += read_cnt;
else if (*p == '\377' && p[1] == 'L' && if (left == 0) {
p[2] == 'Z' && p[3] == 'M' && offset -= MAGIC_SIZE_MIN - 1;
p[4] == 'A' && p[5] == '\000') left = MAGIC_SIZE_MIN - 1;
{
printf("%ld\n",p - buff);
exit(0);
}
/* The LZMA_Alone format has no magic bytes, thus we
* need to play a wizard. This can give false positives,
* thus the detection below should be removed when
* the newer LZMA utils format has got popular. */
// else if (*p == 0x5D && p[1] == 0x00 &&
else if (*p == '\135' &&
p[5] == '\377' && p[6] == '\377' &&
p[7] == '\377' && p[8] == '\377' &&
p[9] == '\377' && p[10] == '\377' &&
p[11] == '\377' && p[12] == '\377')
/* ((p[10] == 0x00 && p[11] == 0x00 &&
p[12] == 0x00) ||
(p[5] == 0xFF && p[6] == 0xFF &&
p[7] == 0xFF && p[8] == 0xFF &&
p[9] == 0xFF && p[10] == 0xFF &&
p[11] == 0xFF && p[12] == 0xFF)))
*/ {
printf("%ld\n",p - buff);
exit(0);
} }
} }
exit(1);
/* Delay till the end for LZMA archives since it is too fuzzy */
if (lzma_offset)
return magic_finish("lzma", lzma_offset);
if (ferror(stdin))
perror(argv[0]);
return 1;
} }

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# Copyright 1999-2009 Gentoo Foundation # Copyright 1999-2011 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2 # Distributed under the terms of the GNU General Public License v2
# $Header: $ # $Header: $

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# Copyright 1999-2008 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $
inherit toolchain-funcs
DESCRIPTION="Find how deeply inside an .RPM the real data is"
HOMEPAGE="http://www.slackware.com/config/packages.php"
SRC_URI=""
LICENSE="as-is"
SLOT="0"
KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~m68k ~mips ~ppc ~ppc64 ~s390 ~sh ~sparc ~x86 ~x86-fbsd"
IUSE="userland_GNU"
RDEPEND="app-arch/cpio
app-arch/lzma-utils"
DEPEND="${DEPEND}"
src_compile() {
"$(tc-getCC)" ${CFLAGS} ${LDFLAGS} ${FILESDIR}/rpmoffset.c -o rpm5offset || die
}
src_install() {
dobin rpm5offset || die
}