freebsd-dev/usr.sbin/bsdconfig/startup/rcvar

#!/bin/sh
#-
# Copyright (c) 2012-2013 Devin Teske
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD$
#
############################################################ INCLUDES

BSDCFG_SHARE="/usr/share/bsdconfig"
. $BSDCFG_SHARE/common.subr || exit 1
f_dprintf "%s: loading includes..." "$0"
f_include $BSDCFG_SHARE/dialog.subr
f_include $BSDCFG_SHARE/mustberoot.subr
f_include $BSDCFG_SHARE/sysrc.subr
f_include $BSDCFG_SHARE/startup/rcvar.subr

BSDCFG_LIBE="/usr/libexec/bsdconfig" APP_DIR="140.startup"
f_include_lang $BSDCFG_LIBE/$APP_DIR/include/messages.subr

f_index_menusel_keyword $BSDCFG_LIBE/$APP_DIR/INDEX "$pgm" ipgm &&
	pgm="${ipgm:-$pgm}"

############################################################ GLOBALS

#
# Global map/menu-list for the main menu
#
RCVAR_MAP=
_RCVAR_MAP=

#
# Options
#
# Inherit SHOW_DESC value if set, otherwise default to 1
[ "${SHOW_DESC+set}" ] || SHOW_DESC=1

############################################################ FUNCTIONS

# dialog_menu_main
#
# Display the dialog(1)-based application main menu.
#
dialog_menu_main()
{
	local prompt=
	local menu_list="
		'X $msg_exit' '$msg_exit_this_menu'
		              ${SHOW_DESC:+'$msg_exit_this_menu'}
	" # END-QUOTE
	local hline="$hline_arrows_tab_enter"
	local defaultitem= # Calculated below

	if [ ! "$_RCVAR_MAP" ]; then
		# Generate RCVAR_MAP of `rcvar dflt script desc ...' per-line
		f_dialog_info "$msg_creating_rcvar_map"
		RCVAR_MAP=$( f_startup_rcvar_map )
		export RCVAR_MAP
		export _RCVAR_MAP=1
	fi

	menu_list="$menu_list $(
		. "$RC_DEFAULTS" > /dev/null
		source_rc_confs > /dev/null
		for rcvar in $( echo "$RCVAR_MAP" | awk '{print $1}' ); do
			eval export $rcvar
		done
		export SHOW_DESC msg_default_value
		echo "$RCVAR_MAP" | awk '
		BEGIN {
			prefix = ""
			rword  = "^[[:space:]]*[^[:space:]]*[[:space:]]*"
		}
		{
			cur_prefix = tolower(substr($1, 1, 1))
			printf "'\''"
			if ( prefix != cur_prefix )
				prefix = cur_prefix
			else
				printf " "
			rcvar   = $1
			default = $2
			script  = $3
			printf "%s'\'' '\''", rcvar
			if ( ENVIRON[rcvar] ~ /[Yy][Ee][Ss]/ )
				printf "[X] "
			else
				printf "[ ] "
			printf "%s; " ENVIRON["msg_default_value"],
			       script, default
			printf "'\''"
			if ( ENVIRON["SHOW_DESC"] ) {
				desc = $0
				sub(rword, "", desc)
				sub(rword, "", desc)
				sub(rword, "", desc)
				gsub(/'\''/, "'\''\\'\'\''", desc)
				printf " '\''%s'\''", desc
			}
			printf "\n"
		}'
	)"

	set -f # set noglob because descriptions in the $menu_list may
	       # contain `*' and get expanded by dialog(1). This prevents
	       # dialog(1) from expanding wildcards in the help line.

	local height width rows
	eval f_dialog_menu${SHOW_DESC:+_with_help}_size \
		height width rows      \
		\"\$DIALOG_TITLE\"     \
		\"\$DIALOG_BACKTITLE\" \
		\"\$prompt\"           \
		\"\$hline\"            \
		$menu_list

	# Obtain default-item from previously stored selection
	f_dialog_default_fetch defaultitem

	local menu_choice
	menu_choice=$( eval $DIALOG \
		--title \"\$DIALOG_TITLE\"         \
		--backtitle \"\$DIALOG_BACKTITLE\" \
		--hline \"\$hline\"                \
		--keep-tite                        \
		--ok-label \"\$msg_ok\"            \
		--cancel-label \"\$msg_cancel\"    \
		${SHOW_DESC:+--item-help}          \
		--default-item \"\$defaultitem\"   \
		--menu \"\$prompt\"                \
		$height $width $rows               \
		$menu_list                         \
		2>&1 >&$DIALOG_TERMINAL_PASSTHRU_FD
	)
	local retval=$?
	f_dialog_data_sanitize menu_choice
	f_dialog_menutag_store "$menu_choice"
	f_dialog_default_store "$menu_choice"

	if [ $retval -eq $DIALOG_OK ]; then
		local item
		item=$( eval f_dialog_menutag2item${SHOW_DESC:+_with_help} \
		         	\"\$menu_choice\" $menu_list )
		f_dialog_menuitem_store "$item"
	fi

	return $retval
}

############################################################ MAIN

# Incorporate rc-file if it exists
[ -f "$HOME/.bsdconfigrc" ] && f_include "$HOME/.bsdconfigrc"

#
# Process command-line arguments
#
while getopts h$GETOPTS_STDARGS flag; do
	case "$flag" in
	h|\?) f_usage $BSDCFG_LIBE/$APP_DIR/USAGE "PROGRAM_NAME" "$pgm" ;;
	esac
done
shift $(( $OPTIND - 1 ))

#
# Initialize
#
f_dialog_title "$msg_toggle_startup_services"
f_dialog_backtitle "${ipgm:+bsdconfig }$pgm"
f_mustberoot_init

#
# Launch application main menu
#
while :; do
	dialog_menu_main || f_die
	f_dialog_menutag_fetch mtag

	[ "$mtag" = "X $msg_exit" ] && break

	# Anything else is an rcvar to toggle

	rcvar="${mtag# }"
	f_dialog_menuitem_fetch value

	# Determine the new [toggled] value to use
	case "$value" in
	"[X]"*) value="NO" ;;
	     *) value="YES"
	esac

	f_eval_catch "$0" f_sysrc_set 'f_sysrc_set "%s" "%s"' "$rcvar" "$value"
done

exit $SUCCESS

################################################################################
# END
################################################################################