How do I extract the contents of an rpm?
For those who do not have rpm2cpio, here is the ancient rpm2cpio.sh script that extracts the payload from a *.rpm package.
Reposted for posterity … and the next generation.
Invoke like this: ./rpm2cpio.sh .rpm | cpio -dimv
#!/bin/sh
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 + $hdrsize`
EXTRACTOR="dd if=$pkg ibs=$o skip=1"
COMPRESSION=`($EXTRACTOR |file -) 2>/dev/null`
if echo $COMPRESSION |grep -q gzip; then
DECOMPRESSOR=gunzip
elif echo $COMPRESSION |grep -q bzip2; then
DECOMPRESSOR=bunzip2
elif echo $COMPRESSION |grep -iq xz; then # xz and XZ safe
DECOMPRESSOR=unxz
elif echo $COMPRESSION |grep -q cpio; then
DECOMPRESSOR=cat
else
# Most versions of file don't support LZMA, therefore we assume
# anything not detected is LZMA
DECOMPRESSOR=`which unlzma 2>/dev/null`
case "$DECOMPRESSOR" in
/* ) ;;
* ) DECOMPRESSOR=`which lzmash 2>/dev/null`
case "$DECOMPRESSOR" in
/* ) DECOMPRESSOR="lzmash -d -c" ;;
* ) DECOMPRESSOR=cat ;;
esac
;;
esac
fi
$EXTRACTOR 2>/dev/null | $DECOMPRESSOR
Sometimes you can encounter an issue with intermediate RPM archive:
cpio: Malformed number
cpio: Malformed number
cpio: Malformed number
. . .
cpio: premature end of archive
That means it could be packed, these days it is LZMA2 compression as usual, by xz
:
rpm2cpio <file>.rpm | xz -d | cpio -idmv
otherwise you could try:
rpm2cpio <file>.rpm | lzma -d | cpio -idmv
$ mkdir packagecontents; cd packagecontents
$ rpm2cpio ../foo.rpm | cpio -idmv
$ find .
For Reference: the cpio arguments are
-i = extract
-d = make directories
-m = preserve modification time
-v = verbose
I found the answer over here: lontar's answer
Did you try the rpm2cpio
commmand? See the example below:
$ rpm2cpio php-5.1.4-1.esp1.x86_64.rpm | cpio -idmv
/etc/httpd/conf.d/php.conf
./etc/php.d
./etc/php.ini
./usr/bin/php
./usr/bin/php-cgi
etc