wintartest001.bash - /cygdrive/c/Windows/system32/tar filesystem test
Posted by Anonymous on Tue 12th Nov 2024 17:05
raw | new post
modification of post by Anonymous (view diff)

#!/bin/bash

#
# wintartest001.bash - /cygdrive/c/Windows/system32/tar filesystem test
# which compares files unpacked by /cygdrive/c/Windows/system32/tar
# and /usr/bin/tar, and checks whether files have same hashes
#
# Written by Roland Mainz <roland.mainz@nrubsig.org>
#

#
# Notes:
# - Genreate test tar.bz2 files like this:
# $ seq 1000000 >10000seq.txt ; tar -cvf - 10000seq.txt | bzip2 -9 >10000seq.tar.bz2
# - Compare individual files with
# $ diff -u <(od -x -v cygwintar/bin/ksh93.exe) <(od -x -v wintar/bin/ksh93.exe)
#

export PATH='/bin:/usr/bin'

# set umask=0000 to avoid permission madness on SMB
umask 0000

typeset intarfile="$1"
typeset f
typeset -i num_failed_hash_compare=0

if [[ ! -x '/cygdrive/c/Windows/system32/tar' ]] ; then
        printf $"%s: %s not found.\n" \
                "$0" '/cygdrive/c/Windows/system32/tar' 1>&2
        exit 1
fi

if [[ ! -r "$intarfile" ]] ; then
        printf $"%s: Input file %q not readable.\n" \
                "$0" "$intarfile" 1>&2
        exit 1
fi

typeset IFS=$'\n'

set -o xtrace
set -o errexit

intarfile="$(realpath "$intarfile")"

rm -Rf 'wintar_tmp' 'cygwintar_tmp'
mkdir 'wintar_tmp' 'cygwintar_tmp'

cd 'wintar_tmp'
/cygdrive/c/Windows/system32/tar -xvf "$(cygpath -w "$intarfile")"
cd '..'

cd 'cygwintar_tmp'
/usr/bin/tar -xvf "$intarfile"
cd '..'

typeset -a file_list=(
        $(cd 'cygwintar_tmp' && find . -type f)
)

set +o xtrace +o errexit

for f in "${file_list[@]}" ; do
        IFS=' ' read wintar_hash dummy < <(openssl md5 -r "wintar_tmp/$f")
        IFS=' ' read cygwintar_hash dummy < <(openssl md5 -r "cygwintar_tmp/$f")

        if [[ "$wintar_hash" == "$cygwintar_hash" ]] ; then
                printf $"NOTE:\tHashes for file %q OK\n" "$f"
        else
                printf $"ERROR:\tHashes for file %q differ, wintar_hash(%s) != cygwintar_hash(%s)\n" \
                        "$f" "$wintar_hash" "$cygwintar_hash"
                (( num_failed_hash_compare++ ))
        fi
done

exit $((num_failed_hash_compare > 0?1:0))