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#!/bin/sh
extract_rpm ()
{
RPM=$1
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`
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`
hdrsize=`expr 8 + 16 \* $il + $dl`
o=`expr $o + $hdrsize`
dd if=$pkg ibs=$o skip=1 2>/dev/null | bsdtar -xf -
}
extract_deb ()
{
DEB=$1
bsdtar -xf ${DEB} data.tar.gz
bsdtar -xf data.tar.gz
rm data.tar.gz
}
pkg=$1
if [ "$pkg" = "" -o ! -e "$pkg" ]; then
echo "no package supplied" 1>&2
exit 1
fi
ext=`echo $pkg | awk -F. '{ print $NF }'`
case "$ext" in
rpm|RPM)
extract_rpm $pkg
;;
deb|DEB)
extract_deb $pkg
;;
*)
echo "Unknown package type: $pkg"
exit 1
esac
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