#!/bin/sh
# build-john.sh — build John the Ripper jumbo with OpenCL support for the LiveCD.
#
# Downloads a pinned source snapshot from the official openwall/john repository,
# builds it inside the builder container, and caches the resulting run/ tree.

set -e

JOHN_COMMIT="$1"
DIST_DIR="$2"

[ -n "$JOHN_COMMIT" ] || { echo "usage: $0 <john-commit> <dist-dir>"; exit 1; }
[ -n "$DIST_DIR" ] || { echo "usage: $0 <john-commit> <dist-dir>"; exit 1; }

echo "=== John the Ripper jumbo ${JOHN_COMMIT} ==="

CACHE_DIR="${DIST_DIR}/john-${JOHN_COMMIT}"
CACHE_ROOT="${BEE_CACHE_DIR:-${DIST_DIR}/cache}"
DOWNLOAD_CACHE_DIR="${CACHE_ROOT}/john-downloads"
SRC_TAR="${DOWNLOAD_CACHE_DIR}/john-${JOHN_COMMIT}.tar.gz"
SRC_URL="https://github.com/openwall/john/archive/${JOHN_COMMIT}.tar.gz"

if [ -x "${CACHE_DIR}/run/john" ] && [ -f "${CACHE_DIR}/run/john.conf" ]; then
    echo "=== john cached, skipping build ==="
    echo "run dir: ${CACHE_DIR}/run"
    exit 0
fi

mkdir -p "${DOWNLOAD_CACHE_DIR}"
if [ ! -f "${SRC_TAR}" ]; then
    echo "=== downloading john source snapshot ==="
    wget --show-progress -O "${SRC_TAR}" "${SRC_URL}"
fi

BUILD_TMP=$(mktemp -d)
trap 'rm -rf "${BUILD_TMP}"' EXIT INT TERM

cd "${BUILD_TMP}"
tar xf "${SRC_TAR}"
SRC_DIR=$(find . -maxdepth 1 -type d -name 'john-*' | head -1)
[ -n "${SRC_DIR}" ] || { echo "ERROR: john source directory not found"; exit 1; }

cd "${SRC_DIR}/src"
echo "=== configuring john ==="
./configure
echo "=== building john ==="
make clean >/dev/null 2>&1 || true
make -j"$(nproc)"

mkdir -p "${CACHE_DIR}"
cp -a "../run" "${CACHE_DIR}/run"
chmod +x "${CACHE_DIR}/run/john"

echo "=== john build complete ==="
echo "run dir: ${CACHE_DIR}/run"