xref: /freebsd-10.2-release/usr.sbin/bsdconfig/usermgmt/share/group_input.subr

if [ ! "$_USERMGMT_GROUP_INPUT_SUBR" ]; then _USERMGMT_GROUP_INPUT_SUBR=1
#
# Copyright (c) 2012 Ron McDowell
# 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: head/usr.sbin/bsdconfig/usermgmt/share/group_input.subr 251547 2013-06-08 18:23:41Z dteske $
#
############################################################ INCLUDES

BSDCFG_SHARE="/usr/share/bsdconfig"
. $BSDCFG_SHARE/common.subr || exit 1
f_dprintf "%s: loading includes..." usermgmt/group_input.subr
f_include $BSDCFG_SHARE/dialog.subr
f_include $BSDCFG_SHARE/strings.subr

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

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

# f_input_group $group
#
# Given $group name or id, create the environment variables group_name,
# group_gid, and group_members (and group_password is reset to NULL).
#
f_input_group()
{
	eval $( pw groupshow "$1" | awk -F: '
	{
		printf "group_name='\'%s\''\n", $1
		printf "group_password=\n"
		printf "group_gid='\'%s\''\n", $3
		printf "group_members='\'%s\''\n", $4
		exit
	}' )
}

# f_dialog_menu_group_list [$default]
#
# Allows the user to select a group from a list. Optionally, if present and
# non-NULL, initially highlight $default group.
#
f_dialog_menu_group_list()
{
	local prompt=
	local menu_list="
		'X $msg_exit' ''
	" # END-QUOTE
	local defaultitem="$1"
	local hline="$hline_alnum_punc_tab_enter"

	# Add groups from group(5)
	menu_list="$menu_list $( pw groupshow -a | awk -F: '
		!/^[[:space:]]*(#|$)/ {
			printf "'\'%s\'\ \'%s\''\n", $1, $1
		}'
	)"

	local height width rows
	eval f_dialog_menu_size height width rows \
	                        \"\$DIALOG_TITLE\"     \
	                        \"\$DIALOG_BACKTITLE\" \
	                        \"\$prompt\"           \
	                        \"\$hline\"            \
	                        $menu_list

	local menu_choice
	menu_choice=$( eval $DIALOG \
		--title \"\$DIALOG_TITLE\"         \
		--backtitle \"\$DIALOG_BACKTITLE\" \
		--hline \"\$hline\"                \
		--ok-label \"\$msg_ok\"            \
		--cancel-label \"\$msg_cancel\"    \
		--default-item \"\$defaultitem\"   \
		--menu \"\$prompt\"                \
		$height $width $rows               \
		$menu_list                         \
		2>&1 >&$DIALOG_TERMINAL_PASSTHRU_FD
	)
	local retval=$?
	f_dialog_menutag_store -s "$menu_choice"
	return $retval
}

# f_dialog_input_group_name [$group_name]
#
# Allows the user to enter a new groupname for a given group. If the user does
# not cancel or press ESC, the $group_name variable will hold the
# newly-configured value upon return.
#
# If $cur_group_name is defined, the user can enter that and by-pass error-
# checking (allowing the user to "revert" to an old value without, for example,
# being told that the groupname already exists).
#
f_dialog_input_group_name()
{
	#
	# Loop until the user provides taint-free/valid input
	#
	local _name="$1" _input="$1"
	while :; do

		# Return if user has either pressed ESC or chosen Cancel/No
		f_dialog_input _input "$msg_group" "$_input" \
		               "$hline_alnum_tab_enter" || return

		# Check for no-change
		[ "$_input" = "$_name" ] && return $SUCCESS

		# Check for reversion
		if [ "$_input" = "$cur_group_name" ]; then
			group_name="$cur_group_name"
			return $SUCCESS
		fi

		# Check for NULL entry
		if [ ! "$_input" ]; then
			f_dialog_msgbox "$msg_group_is_empty"
			continue
		fi

		# Check for invalid entry
		if ! echo "$_input" | grep -q "^[[:alpha:]]"; then
			f_dialog_msgbox "$msg_group_must_start_with_letter"
			continue
		fi

		# Check for duplicate entry
		if f_quietly pw groupshow -n "$_input"; then
			f_show_msg "$msg_group_already_used" "$_input"
			continue
		fi

		group_name="$_input"
		break
	done
	save_flag=1

	f_dprintf "group_name: [%s]->[%s]" "$cur_group_name" "$group_name"

	return $SUCCESS
}

# f_dialog_input_group_password
#
# Prompt the user to enter a password (twice).
#
f_dialog_input_group_password()
{
	local prompt1="$msg_group_password"
	local prompt2="$msg_reenter_group_password"
	local hline="$hline_alnum_punc_tab_enter"

	local height1 width1
	f_dialog_inputbox_size height1 width1 \
	        	"$DIALOG_TITLE"     \
	        	"$DIALOG_BACKTITLE" \
	        	"$prompt1"          \
	        	""                  \
	        	"$hline"

	local height2 width2
	f_dialog_inputbox_size height2 width2 \
	        	"$DIALOG_TITLE"     \
	        	"$DIALOG_BACKTITLE" \
	        	"$prompt2"          \
	        	""                  \
	        	"$hline"

	#
	# Loop until the user provides taint-free/valid input
	#
	local retval _password1 _password2
	while :; do
		_password1=$( $DIALOG \
			--title "$DIALOG_TITLE"         \
			--backtitle "$DIALOG_BACKTITLE" \
			--hline "$hline"                \
			--ok-label "$msg_ok"            \
			--cancel-label "$msg_cancel"    \
			--insecure                      \
			--passwordbox "$prompt1"        \
			$height1 $width1                \
			2>&1 >&$DIALOG_TERMINAL_PASSTHRU_FD
		)
		retval=$?
		debug= f_dialog_line_sanitize _password1

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

		_password2=$( $DIALOG \
			--title "$DIALOG_TITLE"         \
			--backtitle "$DIALOG_BACKTITLE" \
			--hline "$hline"                \
			--ok-label "$msg_ok"            \
			--cancel-label "$msg_cancel"    \
			--insecure                      \
			--passwordbox "$prompt2"        \
			$height2 $width2                \
			2>&1 >&$DIALOG_TERMINAL_PASSTHRU_FD
		)
		retval=$?
		debug= f_dialog_line_sanitize _password2

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

		# Check for password mismatch
		if [ "$_password1" != "$_password2" ]; then
			f_dialog_msgbox "$msg_group_passwords_do_not_match"
			continue
		fi

		# Check for NULL entry
		if [ ! "$_password1" ]; then
			f_dialog_yesno "$msg_disable_password_auth_for_group"
			local retval=$?
			if [ $retval -eq 255 ]; then # ESC was pressed
				return $retval
			elif [ $retval -eq $SUCCESS ]; then
				pw_group_password_disable=1
			else
				continue # back to password prompt
			fi
		else
			pw_group_password_disable=
		fi

		group_password="$_password1"
		break
	done
	save_flag=1

	f_dprintf "group_password: [%s]->[%s]" \
	          "$cur_group_password" "$group_password"

	return $SUCCESS
}

# f_dialog_input_group_gid [$group_gid]
#
# Allow the user to enter a new GID for a given group. If the user does not
# cancel or press ESC, the $group_gid variable will hold the newly-configured
# value upon return.
#
f_dialog_input_group_gid()
{
	local _input="$1"

	# Return if user has either pressed ESC or chosen Cancel/No
	f_dialog_input _input "$msg_group_id_leave_empty_for_default" \
	               "$_input" "$hline_num_tab_enter" || return

	group_gid="$_input"
	save_flag=1

	f_dprintf "group_gid: [%s]->[%s]" "$cur_group_gid" "$group_gid"

	return $SUCCESS
}

# f_dialog_input_group_members [$group_members]
#
# Allow the user to modify a list of members for a given group. If the user
# does not cancel or press ESC, the $group_members variable will hold the
# newly-configured value upon return.
#
f_dialog_input_group_members()
{
	local _input="$1"
	local prompt="$msg_group_members:"
	local menu_list="
		'X' '$msg_continue'
		'1' '$msg_select_group_members_from_list'
		'2' '$msg_enter_group_members_manually'
	" # END-QUOTE
	local defaultitem=
	local hline="$hline_num_arrows_tab_enter"

	local mheight mwidth mrows
	eval f_dialog_menu_size mheight mwidth mrows \
	                        \"\$DIALOG_TITLE\"     \
	                        \"\$DIALOG_BACKTITLE\" \
	                        \"\$prompt\"           \
	                        \"\$hline\"            \
	                        $menu_list

	local menu_choice retval
	while :; do
		menu_choice=$( eval $DIALOG \
			--title \"\$DIALOG_TITLE\"         \
			--backtitle \"\$DIALOG_BACKTITLE\" \
			--hline \"\$hline\"                \
			--ok-label \"\$msg_ok\"            \
			--cancel-label \"\$msg_cancel\"    \
			--default-item \"\$defaultitem\"   \
			--menu \"\$prompt\"                \
			$mheight $mwidth $mrows            \
			$menu_list                         \
			2>&1 >&$DIALOG_TERMINAL_PASSTHRU_FD
		)
		retval=$?
		f_dialog_data_sanitize menu_choice
		defaultitem="$menu_choice"
		f_dprintf "retval=%u menu_choice=[%s]" $retval "$menu_choice"

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

		local _group_members
		case "$menu_choice" in
		X) # Exit
			break ;;
		1) # Select Group Members from a list
			local user check_list=
			for user in $( pw usershow -a |
				awk -F: '!/^[[:space:]]*(#|$)/{print $1}'
			); do
				# Format of a checklist entry: tag item status
				if echo "$_input" | grep -q "\<$user\>"; then
					check_list="$check_list $user '' on"
				else
					check_list="$check_list $user '' off"
				fi
			done

			local cheight cwidth crows
			eval f_dialog_checklist_size cheight cwidth crows \
			                             \"\$DIALOG_TITLE\"     \
			                             \"\$DIALOG_BACKTITLE\" \
			                             \"\$prompt\"           \
			                             \"\$hline\"            \
			                             $check_list
			_group_members=$( eval $DIALOG \
				--title \"\$DIALOG_TITLE\"         \
				--backtitle \"\$DIALOG_BACKTITLE\" \
				--separate-output                  \
				--hline \"\$hline\"                \
				--ok-label \"\$msg_ok\"            \
				--cancel-label \"\$msg_cancel\"    \
				--checklist \"\$prompt\"           \
				$cheight $cwidth $crows            \
				$check_list                        \
				2>&1 >&$DIALOG_TERMINAL_PASSTHRU_FD
			) || continue
				# Return to previous menu if user either
				# pressed ESC or chose Cancel/No
			f_dialog_data_sanitize _group_members

			# Convert the newline separated list into a comma-
			# separated one so that if the user switches over to
			# manual editing, list reflects checklist selections
			_group_members=$( echo "$_group_members" |
				tr '\n' ' ' |
				sed -e 's/[[:space:]]\{1,\}/,/g;s/^,//;s/,$//'
			)

			_input="$_group_members"
			;;
		2) # Enter Group Members manually
			local p="$msg_group_members ($msg_separated_by_commas)"

			f_dialog_input _group_members "$p" "$_input" \
			               "$hline_num_tab_enter" || continue
				# Return to previous menu if user either
				# pressed ESC or chose Cancel/No

			_input="$_group_members"
			;;
		esac
	done

	group_members="$_input"
	save_flag=1
	f_dprintf "group_members: [%s]->[%s]" \
	          "$cur_group_members" "$group_members"

	return $SUCCESS
}

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

f_dprintf "%s: Successfully loaded." usermgmt/group_input.subr

fi # ! $_USERMGMT_GROUP_INPUT_SUBR