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#!/bin/sh # Prevent gawk >= 4.0.x from getting funny ideas wrt UTF in printf() LANG=C pkg=$1 if [ "$pkg" = "" -o ! -e "$pkg" ]; then echo "no package supplied" 1>&2 exit 1 fi leadsize=96 o=`expr $leadsize + 8` set `od -j $o -N 8 -t u1 $pkg` il=`expr 256 \* \( 256 \* \( 256 \* $2 + $3 \) + $4 \) + $5` dl=`expr 256 \* \( 256 \* \( 256 \* $6 + $7 \) + $8 \) + $9` # echo "sig il: $il dl: $dl" sigsize=`expr 8 + 16 \* $il + $dl` o=`expr $o + $sigsize + \( 8 - \( $sigsize \% 8 \) \) \% 8 + 8` set `od -j $o -N 8 -t u1 $pkg` il=`expr 256 \* \( 256 \* \( 256 \* $2 + $3 \) + $4 \) + $5` dl=`expr 256 \* \( 256 \* \( 256 \* $6 + $7 \) + $8 \) + $9` # echo "hdr il: $il dl: $dl" hdrsize=`expr 8 + 16 \* $il + $dl` o=`expr $o + $hdrsize` comp=`dd if="$pkg" ibs=$o skip=1 count=1 2>/dev/null \ | dd bs=3 count=1 2>/dev/null` gz="`echo . | awk '{ printf("%c%c", 0x1f, 0x8b); }'`" lzma="`echo . | awk '{ printf("%cLZ", 0xff); }'`" xz="`echo . | awk '{ printf("%c7z", 0xfd); }'`" case "$comp" in BZh) dd if="$pkg" ibs=$o skip=1 2>/dev/null | bunzip2 ;; "$gz"*) dd if="$pkg" ibs=$o skip=1 2>/dev/null | gunzip ;; "$xz"*) dd if="$pkg" ibs=$o skip=1 2>/dev/null | xzcat ;; "$lzma"*) dd if="$pkg" ibs=$o skip=1 2>/dev/null | unlzma ;; *) echo "Unrecognized rpm file: $pkg"; exit 1 ;; esac