#!/bin/sh
#-
# Copyright (c) 2012 Ron McDowell
# Copyright (c) 2012 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_include $BSDCFG_SHARE/dialog.subr
f_include $BSDCFG_SHARE/mustberoot.subr
f_include $BSDCFG_SHARE/usermgmt/group_input.subr

BSDCFG_LIBE="/usr/libexec/bsdconfig" APP_DIR="070.usermgmt"
f_include_lang $BSDCFG_LIBE/$APP_DIR/include/messages.subr

ipgm=$( f_index_menu_selection $BSDCFG_LIBE/$APP_DIR/INDEX "$pgm" )
[ $? -eq $SUCCESS -a "$ipgm" ] && pgm="$ipgm"

############################################################ CONFIGURATION

# set some reasonable defaults if /etc/adduser.conf does not exist.
[ -f /etc/adduser.conf ] && f_include /etc/adduser.conf
: ${passwdtype:="yes"}

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

# save_changes
#
# Save any/all settings (actions performed depend on $mode value).
#
save_changes()
{
	local err retval=$SUCCESS

	case "$mode" in
	Delete)
		err=$( pw groupdel "$group_name" 2>&1 )
		retval=$?
		if [ $retval -ne $SUCCESS ]; then
			f_show_msg "%s %s\n" "$msg_error" "$err"
			return $retval
		fi
		f_show_msg "$msg_group_deleted"
		;;
	Add)
		local cmd="pw groupadd -n '$group_name'"
		[ "$group_gid" ] && cmd="$cmd -g '$group_gid'"
		[ "$group_members" != "$cur_group_members" ] &&
			cmd="$cmd -M '$group_members'"
		if [ "$pw_group_password_disable" ]; then
			cmd="$cmd -h -"
		elif [ "$group_password" ]; then
			cmd="echo \"\$group_password\" | $cmd -h 0"
		fi
		f_dprintf "cmd=$cmd"
		err=$( eval $cmd 2>&1 )
		retval=$?
		if [ $retval -ne $SUCCESS ]; then
			f_show_msg "%s %s\n" "$msg_error" "$err"
			return $retval
		fi
		f_show_msg "$msg_group_added"
		;;
	Edit/View)
		local cmd="pw groupmod -n '$group_name'"
		[ "$group_gid" ] && cmd="$cmd -g '$group_gid'"
		[ "$group_members" != "$cur_group_members" ] &&
			cmd="$cmd -M '$group_members'"
		if [ "$pw_group_password_disable" ]; then
			cmd="$cmd -h -"
		elif [ "$group_password" ]; then
			cmd="echo \"\$group_password\" | $cmd -h 0"
		fi
		f_dprintf "cmd=$cmd"
		err=$( eval $cmd 2>&1 )
		retval=$?
		if [ $retval -ne $SUCCESS ]; then
			f_show_msg "%s %s\n" "$msg_error" "$err"
			return $retval
		fi
		f_show_msg "$msg_group_updated"
		;;
	esac

	save_flag=
	return $SUCCESS
}

# dialog_title_update $mode
#
# Set the title based on the given $mode.
# 
dialog_title_update()
{
	local mode="$1"
	case "$mode" in
	Add)       f_dialog_title "$msg_add $msg_group" ;;
	Edit/View) f_dialog_title "$msg_edit_view $msg_group: $group" ;;
	Delete)    f_dialog_title "$msg_delete $msg_group: $group" ;;
	esac
}

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

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

#
# Process command-line arguments
#
while [ $# -gt 0 ]; do
	key="${1%%=*}"
	value="${1#*=}"
	f_dprintf "key=[$key] value=[$value]"
	case "$key" in
	mode) mode="$value";;
	group) group="$value";;
	esac
	shift
done
f_dprintf "mode=[$mode] group=[$group]"

#
# Initialize
#
f_dialog_init
dialog_title_update "$mode"
f_dialog_backtitle "${ipgm:+bsdconfig }$pgm"
f_mustberoot_init
menu_text=
save_flag=
hline="$hline_arrows_tab_enter"

if [ "$mode" = "Add" ]; then
	#
	# Ask a series of questions to pre-fill the editor screen.
	#
	# The defaults used in each dialog should allow the user to simply
	#   hit ENTER to proceed, because cancelling a single dialog will
	#   cause them to be returned to the main groupmenu.
	#

	f_dialog_input_group_name || exit 0
	[ "$passwdtype" = "yes" ] &&
		{ f_dialog_input_group_password || exit 0; }
	f_dialog_input_group_gid  || exit 0
	f_dialog_input_group_members || exit 0
fi

if [ "$mode" = "Edit/View" -o "$mode" = "Delete" ]; then
	f_input_group "$group" || f_die 1 "$msg_group_not_found"
fi

cur_group_name="$group_name"
cur_group_password="$group_password"
cur_group_gid="$group_gid"
cur_group_members="$group_members"

[ "$mode" = "Delete" ] && save_flag=1

#
# Loop until the user decides to Exit, Cancel, or presses ESC
#
while :; do
	dialog_title_update "$mode"

	menu_text=
	menu_exit="$msg_exit"
	if [ "$save_flag" ]; then
		if [ "$mode" = "Delete" ]; then
			menu_exit="$msg_delete/$msg_exit"
			menu_text="$msg_delete_exit_or_cancel"
		else
			menu_exit="$msg_save/$msg_exit"
			menu_text="$msg_save_exit_or_cancel"
		fi
	fi

	case "$mode" in
	Delete)
		menu_items="
			'X' '$menu_exit'
			'1' '$msg_group: $group_name'
			'-' '$msg_password: -----'
			'-' '$msg_group_id: $group_gid'
			'-' '$msg_group_members: $group_members'
		" # END-QUOTE
		;;
	*)
		menu_items="
			'X' '$menu_exit'
			'1' '$msg_group: $group_name'
			'2' '$msg_password: -----'
			'3' '$msg_group_id: $group_gid'
			'4' '$msg_group_members: $group_members'
		" # END-QUOTE
	esac

	size=$( eval f_dialog_menu_size \
	        	\"\$DIALOG_TITLE\"     \
	        	\"\$DIALOG_BACKTITLE\" \
	        	\"\$menu_text\"        \
	        	\"\$hline\"            \
	        	$menu_items            )

	dialog_menu=$( eval $DIALOG \
		--title \"\$DIALOG_TITLE\"         \
		--backtitle \"\$DIALOG_BACKTITLE\" \
		--hline \"\$hline\"                \
		--ok-label \"\$msg_ok\"            \
		--cancel-label \"\$msg_cancel\"    \
		--menu \"\$menu_text\" $size       \
		$menu_items                        \
		2>&1 >&$DIALOG_TERMINAL_PASSTHRU_FD
	)

	retval=$?
	setvar DIALOG_MENU_$$ "$dialog_menu"
	mtag=$( f_dialog_menutag )
	f_dprintf "retval=$retval mtag=[$mtag]"

	# Exit if user has either pressed ESC or chosen Cancel/No
	[ $retval -eq $SUCCESS ] || f_die

	case "$mtag" in
	X) # Exit
	   if [ "$save_flag" ]; then
	   	save_changes || continue
	   fi
	   break
	   ;;
	1) # Group Name
	   case "$mode" in
	   Add) f_dialog_input_group_name "$group_name" ;;
	   Edit/View|Delete)
	   	f_dialog_menu_group_list
	   	retval=$?
	   	mtag=$( f_dialog_menutag )
	   	f_dprintf "retval=$retval mtag=[$mtag]"

	   	# Loop if user has either pressed ESC or chosen Cancel/No
	   	[ $retval -eq $SUCCESS ] || continue

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

	   	group="$mtag"
	   	f_input_group "$group" || f_die 1 "$msg_group_not_found"
	   	cur_group_name="$group_name"
	   	cur_group_password="$group_password"
	   	cur_group_gid="$group_gid"
	   	cur_group_members="$group_members"
	   	[ "$mode" != "Delete" ] && save_flag=
	   esac
	   ;;
	2) # Password
	   f_dialog_input_group_password
	   ;;
	3) # GID
	   f_dialog_input_group_gid "$group_gid"
	   ;;
	4) # Users in Group
	   f_dialog_input_group_members "$group_members"
	   ;;
	esac

done

exit $SUCCESS

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