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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 21:12:04 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 21:12:04 +0000
commiteac54b7c4aec25060d7bd856f7cdc290943d6aae (patch)
tree9a6d81c9f88df4698e746d63d14ddafeddd918b8 /extra
parentInitial commit. (diff)
downloadxz-utils-eac54b7c4aec25060d7bd856f7cdc290943d6aae.tar.xz
xz-utils-eac54b7c4aec25060d7bd856f7cdc290943d6aae.zip
Adding upstream version 5.4.1.upstream/5.4.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rwxr-xr-xextra/7z2lzma/7z2lzma.bash115
-rw-r--r--extra/scanlzma/scanlzma.c88
2 files changed, 203 insertions, 0 deletions
diff --git a/extra/7z2lzma/7z2lzma.bash b/extra/7z2lzma/7z2lzma.bash
new file mode 100755
index 0000000..1777c78
--- /dev/null
+++ b/extra/7z2lzma/7z2lzma.bash
@@ -0,0 +1,115 @@
+#!/bin/bash
+#
+#############################################################################
+#
+# 7z2lzma.bash is very primitive .7z to .lzma converter. The input file must
+# have exactly one LZMA compressed stream, which has been created with the
+# default lc, lp, and pb values. The CRC32 in the .7z archive is not checked,
+# and the script may seem to succeed while it actually created a corrupt .lzma
+# file. You should always try uncompressing both the original .7z and the
+# created .lzma and compare that the output is identical.
+#
+# This script requires basic GNU tools and 7z or 7za tool from p7zip.
+#
+# Last modified: 2009-01-15 14:25+0200
+#
+#############################################################################
+#
+# Author: Lasse Collin <lasse.collin@tukaani.org>
+#
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
+#############################################################################
+
+# You can use 7z or 7za, both will work.
+SEVENZIP=7za
+
+if [ $# != 2 -o -z "$1" -o -z "$2" ]; then
+ echo "Usage: $0 input.7z output.lzma"
+ exit 1
+fi
+
+# Converts an integer variable to little endian binary integer.
+int2bin()
+{
+ local LEN=$1
+ local NUM=$2
+ local HEX=(0 1 2 3 4 5 6 7 8 9 A B C D E F)
+ local I
+ for ((I=0; I < "$LEN"; ++I)); do
+ printf "\\x${HEX[(NUM >> 4) & 0x0F]}${HEX[NUM & 0x0F]}"
+ NUM=$((NUM >> 8))
+ done
+}
+
+# Make sure we get possible errors from pipes.
+set -o pipefail
+
+# Get information about the input file. At least older 7z and 7za versions
+# may return with zero exit status even when an error occurred, so check
+# if the output has any lines beginning with "Error".
+INFO=$("$SEVENZIP" l -slt "$1")
+if [ $? != 0 ] || printf '%s\n' "$INFO" | grep -q ^Error; then
+ printf '%s\n' "$INFO"
+ exit 1
+fi
+
+# Check if the input file has more than one compressed block.
+if printf '%s\n' "$INFO" | grep -q '^Block = 1'; then
+ echo "Cannot convert, because the input file has more than"
+ echo "one compressed block."
+ exit 1
+fi
+
+# Get compressed, uncompressed, and dictionary size.
+CSIZE=$(printf '%s\n' "$INFO" | sed -rn 's|^Packed Size = ([0-9]+$)|\1|p')
+USIZE=$(printf '%s\n' "$INFO" | sed -rn 's|^Size = ([0-9]+$)|\1|p')
+DICT=$(printf '%s\n' "$INFO" | sed -rn 's|^Method = LZMA:([0-9]+[bkm]?)$|\1|p')
+
+if [ -z "$CSIZE" -o -z "$USIZE" -o -z "$DICT" ]; then
+ echo "Parsing output of $SEVENZIP failed. Maybe the file uses some"
+ echo "other compression method than plain LZMA."
+ exit 1
+fi
+
+# The following assumes that the default lc, lp, and pb settings were used.
+# Otherwise the output will be corrupt.
+printf '\x5D' > "$2"
+
+# Dictionary size can be either was power of two, bytes, kibibytes, or
+# mebibytes. We need to convert it to bytes.
+case $DICT in
+ *b)
+ DICT=${DICT%b}
+ ;;
+ *k)
+ DICT=${DICT%k}
+ DICT=$((DICT << 10))
+ ;;
+ *m)
+ DICT=${DICT%m}
+ DICT=$((DICT << 20))
+ ;;
+ *)
+ DICT=$((1 << DICT))
+ ;;
+esac
+int2bin 4 "$DICT" >> "$2"
+
+# Uncompressed size
+int2bin 8 "$USIZE" >> "$2"
+
+# Copy the actual compressed data. Using multiple dd commands to avoid
+# copying large amount of data with one-byte block size, which would be
+# annoyingly slow.
+BS=8192
+BIGSIZE=$((CSIZE / BS))
+CSIZE=$((CSIZE % BS))
+{
+ dd of=/dev/null bs=32 count=1 \
+ && dd bs="$BS" count="$BIGSIZE" \
+ && dd bs=1 count="$CSIZE"
+} < "$1" >> "$2"
+
+exit $?
diff --git a/extra/scanlzma/scanlzma.c b/extra/scanlzma/scanlzma.c
new file mode 100644
index 0000000..110f822
--- /dev/null
+++ b/extra/scanlzma/scanlzma.c
@@ -0,0 +1,88 @@
+/*
+ scanlzma, scan for lzma compressed data in stdin and echo it to stdout.
+ Copyright (C) 2006 Timo Lindfors
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+*/
+
+/* Usage example:
+
+ $ wget http://www.wifi-shop.cz/Files/produkty/wa2204/wa2204av1.4.1.zip
+ $ unzip wa2204av1.4.1.zip
+ $ gcc scanlzma.c -o scanlzma -Wall
+ $ ./scanlzma 0 < WA2204-FW1.4.1/linux-1.4.bin | lzma -c -d | strings | grep -i "copyright"
+ UpdateDD version 2.5, Copyright (C) 2005 Philipp Benner.
+ Copyright (C) 2005 Philipp Benner.
+ Copyright (C) 2005 Philipp Benner.
+ mawk 1.3%s%s %s, Copyright (C) Michael D. Brennan
+ # Copyright (C) 1998, 1999, 2001 Henry Spencer.
+ ...
+
+*/
+
+
+/* LZMA compressed file format */
+/* --------------------------- */
+/* Offset Size Description */
+/* 0 1 Special LZMA properties for compressed data */
+/* 1 4 Dictionary size (little endian) */
+/* 5 8 Uncompressed size (little endian). -1 means unknown size */
+/* 13 Compressed data */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#define BUFSIZE 4096
+
+int find_lzma_header(unsigned char *buf) {
+ return (buf[0] < 0xE1
+ && buf[0] == 0x5d
+ && buf[4] < 0x20
+ && (memcmp (buf + 10 , "\x00\x00\x00", 3) == 0
+ || (memcmp (buf + 5, "\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF", 8) == 0)));
+}
+
+int main(int argc, char *argv[]) {
+ unsigned char buf[BUFSIZE];
+ int ret, i, numlzma, blocks=0;
+
+ if (argc != 2) {
+ printf("usage: %s numlzma < infile | lzma -c -d > outfile\n"
+ "where numlzma is index of lzma file to extract, starting from zero.\n",
+ argv[0]);
+ exit(1);
+ }
+ numlzma = atoi(argv[1]);
+
+ for (;;) {
+ /* Read data. */
+ ret = fread(buf, BUFSIZE, 1, stdin);
+ if (ret != 1)
+ break;
+
+ /* Scan for signature. */
+ for (i = 0; i<BUFSIZE-23; i++) {
+ if (find_lzma_header(buf+i) && numlzma-- <= 0) {
+ fwrite(buf+i, (BUFSIZE-i), 1, stdout);
+ for (;;) {
+ int ch;
+ ch = getchar();
+ if (ch == EOF)
+ exit(0);
+ putchar(ch);
+ }
+ }
+ }
+ blocks++;
+ }
+ return 1;
+}