threecpio 0.14.0

#!/bin/sh
set -eu

# Copyright (C) 2024-2026, Benjamin Drung <bdrung@posteo.de>
# SPDX-License-Identifier: ISC

# Generate the test cpio files

export SOURCE_DATE_EPOCH=1713104326

# Generate the test data

generate_cpio() {
    input_dir="$1"
    find "$input_dir" -depth -exec touch --no-dereference --date="@${SOURCE_DATE_EPOCH}" {} \;
    { cd "$input_dir"; find .; } | LC_ALL=C sort \
        | cpio --owner "+0:+0" --reproducible --quiet -o -H newc -D "$input_dir"
}

cd "$(dirname "$0")"

input="$(mktemp -d "${TMPDIR-/tmp}/3cpio_XXXXXX")"
trap 'rm -rf "${input}"' 0 1 2 3 6

mkdir -p "$input/single/path"
echo "content" > "$input/single/path/file"
generate_cpio "${input}/single" > single.cpio

mkdir -p "$input/shell/usr/bin/"
echo "This is a fake busybox binary to simulate a POSIX shell" > "$input/shell/usr/bin/sh"
ln -s sh "$input/shell/usr/bin/ash"
generate_cpio "${input}/shell" > shell.cpio
touch --date="@${SOURCE_DATE_EPOCH}" shell.cpio

mkdir -p "$input/bigdata"
dd bs=1000 count=102500 if=/dev/zero of="$input/bigdata/zeros"
generate_cpio "${input}/bigdata" > "$input/bigdata.cpio"
touch --date="@${SOURCE_DATE_EPOCH}" "$input/bigdata.cpio"

cp single.cpio bzip2.cpio
bzip2 -9 < shell.cpio >> bzip2.cpio

cp single.cpio gzip.cpio
gzip -n -9 < shell.cpio >> gzip.cpio

cp single.cpio lz4.cpio
lz4 -l -9 < shell.cpio >> lz4.cpio

cp single.cpio lzma.cpio
lzma -9 < shell.cpio >> lzma.cpio

cp single.cpio lzop.cpio
lzop -9 -c shell.cpio >> lzop.cpio

cp single.cpio xz.cpio
xz --check=crc32 --threads=1 -9 < shell.cpio >> xz.cpio

cp single.cpio zstd.cpio
zstd -q -9 < shell.cpio >> zstd.cpio

cat single.cpio shell.cpio > bigdata.cpio
zstd -q -9 < "$input/bigdata.cpio" >> bigdata.cpio

mkdir "$input/path-traversal"
ln -s /tmp "$input/path-traversal/tmp"
echo "TEST Traversal" > "$input/path-traversal/tmpYtrav.txt"
generate_cpio "$input/path-traversal" | sed "s@tmpY@tmp/@g" > path-traversal.cpio