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cc2c3b1b62
openSUSE RPMs are compressing the RPM payload using zstd, that correspond to the magic ID 0x28, 0xb5, 0x2f. This patch update the script to the last version from the rpm project, and add support to this compression format, and extract the cpio payload using the "unzstd" binary. (From OE-Core rev: 3aba44a75dd565b192f7328f2a0150a313de3cc1) Signed-off-by: Alberto Planas <aplanas@suse.com> Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
66 lines
1.6 KiB
Bash
Executable File
66 lines
1.6 KiB
Bash
Executable File
#!/bin/sh -efu
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# This file comes from rpm 4.x distribution
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fatal() {
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echo "$*" >&2
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exit 1
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}
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pkg="$1"
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[ -n "$pkg" ] && [ -e "$pkg" ] ||
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fatal "No package supplied"
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_dd() {
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local o="$1"; shift
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dd if="$pkg" skip="$o" iflag=skip_bytes status=none $*
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}
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calcsize() {
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case "$(_dd $1 bs=4 count=1 | tr -d '\0')" in
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"$(printf '\216\255\350')"*) ;; # '\x8e\xad\xe8'
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*) fatal "File doesn't look like rpm: $pkg" ;;
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esac
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offset=$(($1 + 8))
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local i b b0 b1 b2 b3 b4 b5 b6 b7
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i=0
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while [ $i -lt 8 ]; do
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# add . to not loose \n
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# strip \0 as it gets dropped with warning otherwise
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b="$(_dd $(($offset + $i)) bs=1 count=1 | tr -d '\0' ; echo .)"
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b=${b%.} # strip . again
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[ -z "$b" ] &&
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b="0" ||
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b="$(exec printf '%u\n' "'$b")"
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eval "b$i=\$b"
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i=$(($i + 1))
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done
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rsize=$((8 + ((($b0 << 24) + ($b1 << 16) + ($b2 << 8) + $b3) << 4) + ($b4 << 24) + ($b5 << 16) + ($b6 << 8) + $b7))
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offset=$(($offset + $rsize))
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}
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case "$(_dd 0 bs=4 count=1 | tr -d '\0')" in
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"$(printf '\355\253\356\333')"*) ;; # '\xed\xab\xee\xdb'
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*) fatal "File doesn't look like rpm: $pkg" ;;
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esac
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calcsize 96
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sigsize=$rsize
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calcsize $(($offset + (8 - ($sigsize % 8)) % 8))
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hdrsize=$rsize
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case "$(_dd $offset bs=2 count=1 | tr -d '\0')" in
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"$(printf '\102\132')") _dd $offset | bunzip2 ;; # '\x42\x5a'
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"$(printf '\037\213')") _dd $offset | gunzip ;; # '\x1f\x8b'
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"$(printf '\375\067')") _dd $offset | xzcat ;; # '\xfd\x37'
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"$(printf '\135')") _dd $offset | unlzma ;; # '\x5d\x00'
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"$(printf '\050\265')") _dd $offset | unzstd ;; # '\x28\xb5'
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*) fatal "Unrecognized payload compression format in rpm file: $pkg" ;;
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esac
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