diff options
Diffstat (limited to 'import-layers/yocto-poky/scripts/rpm2cpio.sh')
-rwxr-xr-x | import-layers/yocto-poky/scripts/rpm2cpio.sh | 108 |
1 files changed, 55 insertions, 53 deletions
diff --git a/import-layers/yocto-poky/scripts/rpm2cpio.sh b/import-layers/yocto-poky/scripts/rpm2cpio.sh index 5df8c0f705..cf23472ba9 100755 --- a/import-layers/yocto-poky/scripts/rpm2cpio.sh +++ b/import-layers/yocto-poky/scripts/rpm2cpio.sh @@ -1,53 +1,55 @@ -#!/bin/sh - -# This comes from the RPM5 5.4.0 distribution. - -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 -iq gzip; then - DECOMPRESSOR=gunzip -elif echo $COMPRESSION |grep -iq bzip2; then - DECOMPRESSOR=bunzip2 -elif echo $COMPRESSION |grep -iq xz; then - DECOMPRESSOR=unxz -elif echo $COMPRESSION |grep -iq cpio; then - DECOMPRESSOR=cat -else - # Most versions of file don't support LZMA, therefore we assume - # anything not detected is LZMA - DECOMPRESSOR=`which unlzma 2>/dev/null` - case "$DECOMPRESSOR" in - /* ) ;; - * ) DECOMPRESSOR=`which lzmash 2>/dev/null` - case "$DECOMPRESSOR" in - /* ) DECOMPRESSOR="lzmash -d -c" ;; - * ) DECOMPRESSOR=cat ;; - esac - ;; - esac -fi - -$EXTRACTOR 2>/dev/null | $DECOMPRESSOR +#!/bin/sh -efu + +# This file comes from rpm 4.x distribution + +fatal() { + echo "$*" >&2 + exit 1 +} + +pkg="$1" +[ -n "$pkg" -a -e "$pkg" ] || + fatal "No package supplied" + +_dd() { + local o="$1"; shift + dd if="$pkg" skip="$o" iflag=skip_bytes status=none $* +} + +calcsize() { + offset=$(($1 + 8)) + + local i b b0 b1 b2 b3 b4 b5 b6 b7 + + i=0 + while [ $i -lt 8 ]; do + b="$(_dd $(($offset + $i)) bs=1 count=1)" + [ -z "$b" ] && + b="0" || + b="$(exec printf '%u\n' "'$b")" + eval "b$i=\$b" + i=$(($i + 1)) + done + + rsize=$((8 + ((($b0 << 24) + ($b1 << 16) + ($b2 << 8) + $b3) << 4) + ($b4 << 24) + ($b5 << 16) + ($b6 << 8) + $b7)) + offset=$(($offset + $rsize)) +} + +case "$(_dd 0 bs=8 count=1)" in + "$(printf '\355\253\356\333')"*) ;; # '\xed\xab\xee\xdb' + *) fatal "File doesn't look like rpm: $pkg" ;; +esac + +calcsize 96 +sigsize=$rsize + +calcsize $(($offset + (8 - ($sigsize % 8)) % 8)) +hdrsize=$rsize + +case "$(_dd $offset bs=3 count=1)" in + "$(printf '\102\132')"*) _dd $offset | bunzip2 ;; # '\x42\x5a' + "$(printf '\037\213')"*) _dd $offset | gunzip ;; # '\x1f\x8b' + "$(printf '\375\067')"*) _dd $offset | xzcat ;; # '\xfd\x37' + "$(printf '\135\000')"*) _dd $offset | unlzma ;; # '\x5d\x00' + *) fatal "Unrecognized rpm file: $pkg" ;; +esac |