diff options
-rwxr-xr-x | scripts/rpm2cpio.sh | 30 |
1 files changed, 20 insertions, 10 deletions
diff --git a/scripts/rpm2cpio.sh b/scripts/rpm2cpio.sh index 2034373fe4..8199b43784 100755 --- a/scripts/rpm2cpio.sh +++ b/scripts/rpm2cpio.sh | |||
@@ -7,7 +7,7 @@ fatal() { | |||
7 | } | 7 | } |
8 | 8 | ||
9 | pkg="$1" | 9 | pkg="$1" |
10 | [ -n "$pkg" -a -e "$pkg" ] || | 10 | [ -n "$pkg" ] && [ -e "$pkg" ] || |
11 | fatal "No package supplied" | 11 | fatal "No package supplied" |
12 | 12 | ||
13 | _dd() { | 13 | _dd() { |
@@ -16,14 +16,23 @@ _dd() { | |||
16 | } | 16 | } |
17 | 17 | ||
18 | calcsize() { | 18 | calcsize() { |
19 | |||
20 | case "$(_dd $1 bs=4 count=1 | tr -d '\0')" in | ||
21 | "$(printf '\216\255\350')"*) ;; # '\x8e\xad\xe8' | ||
22 | *) fatal "File doesn't look like rpm: $pkg" ;; | ||
23 | esac | ||
24 | |||
19 | offset=$(($1 + 8)) | 25 | offset=$(($1 + 8)) |
20 | 26 | ||
21 | local i b b0 b1 b2 b3 b4 b5 b6 b7 | 27 | local i b b0 b1 b2 b3 b4 b5 b6 b7 |
22 | 28 | ||
23 | i=0 | 29 | i=0 |
24 | while [ $i -lt 8 ]; do | 30 | while [ $i -lt 8 ]; do |
25 | b=$(_dd $(($offset + $i)) bs=1 count=1; echo X) | 31 | # add . to not loose \n |
26 | b=${b%X} | 32 | # strip \0 as it gets dropped with warning otherwise |
33 | b="$(_dd $(($offset + $i)) bs=1 count=1 | tr -d '\0' ; echo .)" | ||
34 | b=${b%.} # strip . again | ||
35 | |||
27 | [ -z "$b" ] && | 36 | [ -z "$b" ] && |
28 | b="0" || | 37 | b="0" || |
29 | b="$(exec printf '%u\n' "'$b")" | 38 | b="$(exec printf '%u\n' "'$b")" |
@@ -35,7 +44,7 @@ calcsize() { | |||
35 | offset=$(($offset + $rsize)) | 44 | offset=$(($offset + $rsize)) |
36 | } | 45 | } |
37 | 46 | ||
38 | case "$(_dd 0 bs=8 count=1)" in | 47 | case "$(_dd 0 bs=4 count=1 | tr -d '\0')" in |
39 | "$(printf '\355\253\356\333')"*) ;; # '\xed\xab\xee\xdb' | 48 | "$(printf '\355\253\356\333')"*) ;; # '\xed\xab\xee\xdb' |
40 | *) fatal "File doesn't look like rpm: $pkg" ;; | 49 | *) fatal "File doesn't look like rpm: $pkg" ;; |
41 | esac | 50 | esac |
@@ -46,10 +55,11 @@ sigsize=$rsize | |||
46 | calcsize $(($offset + (8 - ($sigsize % 8)) % 8)) | 55 | calcsize $(($offset + (8 - ($sigsize % 8)) % 8)) |
47 | hdrsize=$rsize | 56 | hdrsize=$rsize |
48 | 57 | ||
49 | case "$(_dd $offset bs=3 count=1)" in | 58 | case "$(_dd $offset bs=2 count=1 | tr -d '\0')" in |
50 | "$(printf '\102\132')"*) _dd $offset | bzip2 -d ;; # '\x42\x5a' | 59 | "$(printf '\102\132')") _dd $offset | bunzip2 ;; # '\x42\x5a' |
51 | "$(printf '\037\213')"*) _dd $offset | gunzip ;; # '\x1f\x8b' | 60 | "$(printf '\037\213')") _dd $offset | gunzip ;; # '\x1f\x8b' |
52 | "$(printf '\375\067')"*) _dd $offset | xzcat ;; # '\xfd\x37' | 61 | "$(printf '\375\067')") _dd $offset | xzcat ;; # '\xfd\x37' |
53 | "$(printf '\135\000')"*) _dd $offset | unlzma ;; # '\x5d\x00' | 62 | "$(printf '\135')") _dd $offset | unlzma ;; # '\x5d\x00' |
54 | *) fatal "Unrecognized rpm file: $pkg" ;; | 63 | "$(printf '\050\265')") _dd $offset | unzstd ;; # '\x28\xb5' |
64 | *) fatal "Unrecognized payload compression format in rpm file: $pkg" ;; | ||
55 | esac | 65 | esac |