#!/bin/sh
set -f

iep_preserve_env() {
	## preserve LD_PRELOAD
	unset __IEP_LD_PRELOAD
	__IEP_LD_PRELOAD="${LD_PRELOAD:-}"
	unset LD_PRELOAD

	## glibc: preserve MALLOC_ARENA_MAX
	unset __IEP_MALLOC_ARENA_MAX
	__IEP_MALLOC_ARENA_MAX=${MALLOC_ARENA_MAX:-2}
	export MALLOC_ARENA_MAX=2
}

iep_restore_env() {
	unset IEP_VERBOSE IEP_TRACE IEP_ROOT IEP_LOCAL_OVERRIDE

	## restore LD_PRELOAD
	if [ -n "${__IEP_LD_PRELOAD}" ] ; then
		export LD_PRELOAD="${__IEP_LD_PRELOAD}"
	fi
	unset __IEP_LD_PRELOAD

	## glibc: restore MALLOC_ARENA_MAX
	if [ "${MALLOC_ARENA_MAX}" = 2 ] ; then
		export MALLOC_ARENA_MAX="${__IEP_MALLOC_ARENA_MAX}"
	fi
	unset __IEP_MALLOC_ARENA_MAX
}

iep_preserve_env

## early setup TMPDIR (affects "mktemp")
export TMPDIR=/run/angie/tmp
[ -d "${TMPDIR}" ] || install -d -m 03777 "${TMPDIR}"

## RFC: no need to run entire entrypoint for custom command
# case "$1" in
# angie | */angie ) ;;
# * )
# 	unset IEP_INIT DUMB_INIT_ARGS
# 	iep_restore_env
# 	exec "$@"
# ;;
# esac

unset __IEP_SRC ; __IEP_SRC="${0##*/}"
. /image-entry.d/00-common.envsh

unexport IEP_INIT DUMB_INIT_ARGS

## run parts (if any)
while read -r f ; do
	[ -n "$f" ] || continue
	[ -f "$f" ] || continue

	case "$f" in
	*.envsh )
		if ! [ -x "$f" ] ; then
			log "NOT sourcing $f - not executable"
			continue
		fi
		log_always "sourcing $f"
		__IEP_SRC="$f"
		. "$f"
		__IEP_SRC="${0##*/}"
	;;
	* )
		if ! [ -x "$f" ] ; then
			log "NOT running $f - not executable"
			continue
		fi
		log_always "running $f"
		"$f"
	;;
	esac
done <<EOF
$(
	if [ -d /image-entry ] ; then
		overlay-dir-list.sh /image-entry.d /image-entry
	else
		find /image-entry.d/ -follow -type f | sort -V
	fi
)
EOF

iep_restore_env

IEP_INIT=$(gobool_to_int "${IEP_INIT:-0}" 0)
if [ "${IEP_INIT}" = 0 ] ; then
	exec "$@"
else
	exec dumb-init ${DUMB_INIT_ARGS} "$@"
fi