#!/bin/sh

APPLET=${0##*/}

usage() {
	cat << EOF

$0: get/put users, groups & passwords from/to save buffer
Usage: $APPLET {load|save}

Examples:
  # Retrieve data from save buffer (*not* from TFFS)
  $APPLET load

  # Put data to save buffer (*not* to TFFS)
  $APPLET save
  # Make save buffer persistent in TFFS
  modsave flash

EOF
}

[ $# -eq 0 ] && usage && exit 0
[ $# -ne 1 ] && usage >&2 && exit 1

PATH=/sbin:/bin:/usr/sbin:/usr/bin
FLASH_DIR=/tmp/flash
USER_DIR=$FLASH_DIR/users
TMP_DIR=/tmp
FILES="passwd group shadow gshadow"

make_user_dir()
{
	rm -rf $USER_DIR
	mkdir -pm 700 $USER_DIR
}

save()
{
	make_user_dir
	( cd $TMP_DIR && cp -a $FILES $USER_DIR	)
}

init_passwd()
{
	return 0
#	WEBUI_PASSWD=$(allcfgconv -c -o - ar7 | sed -n -e '1,/webui/d' -e '/}/,$d' -e '/password/s/^.*"\(.*\)".*$/\1/p')
#	CRYPT_PASSWD=$(httpd -m "$WEBUI_PASSWD")
#	sed -i -e "s,^\(root:\)[^:]*\(.*\)$,\1${CRYPT_PASSWD}\2,g" $TMP_DIR/shadow
#	/usr/bin/modconf set mod MOD_HTTPD_PASSWD=$(/usr/sbin/httpd -m "$WEBUI_PASSWD")
}

load()
{
	if ! [ -d "$USER_DIR" ]; then
		make_user_dir
		init_passwd
	fi

	for f in $FILES; do
		if [ -e "$USER_DIR/$f" ]; then
			cp -a "$USER_DIR/$f" "$TMP_DIR"
			# BEGIN compat
			# TODO: remove in one of the next releases
			[ "$f" = "shadow" -o "$f" = "gshadow" ] && chmod 600 "$TMP_DIR/$f"
			# END compat
		fi
	done
}

case $1 in
	save)
		save
		;;
	load)
		load
		;;
	*)
		usage >&2
		exit 1
		;;
esac