Firewall-SOSDG/tools/configure-firewall

#!/bin/bash
# By Brielle Bruns <bruns@2mbit.com>
# URL: http://www.sosdg.org/freestuff/firewall
# License: GPLv3
#
#    Copyright (C) 2009 - 2010  Brielle Bruns
#    Copyright (C) 2009 - 2010  The Summit Open Source Development Group
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.

CONFIGTOOL_VER="0.1"

WHIPTAIL="/usr/bin/whiptail"
TMPCONFIG=`mktemp`
WHICH="/usr/bin/which"
AUTOCONFIG_BIN="iptables:IPTABLES ip6tables:IP6TABLES modprobe:MODPROBE"



# These are string variables
TOOL_TITLE="Welcome to the Firewall/SOSDG Config Tool v${CONFIGTOOL_VER}"
WELCOME_BODY="This tool is a quick way to do a basic setup of the firewall script.\n\nThe results of this tool will be output to a file of your choosing at the end of configuration.\nContinue?"
AUTOCONFIG_PATHS="Would you like to try to configure paths of important programs automatically?"
FAILED_BINS="The following binaries were not found on this system:"
FAILED_BINS_FOOT="Please edit the config file by hand and put in the proper path."

if [ ! -x $WHIPTAIL ]; then
	echo "Error: please make sure you have whiptail installed, and the WHIPTAIL variable 
		is set correctly in the tool."
	rm -f "$TMPCONFIG"
	exit 1
fi

if ! ( $WHIPTAIL --title "${TOOL_TITLE}" --yesno "${WELCOME_BODY}" 12 70 --no-button "Quit" ); then
	echo "Quitting config tool."
	rm -f "$TMPCONFIG"
	exit 1
fi

if [ -w "$TMPCONFIG" ]; then
	echo "# Automatically generated config file, please check before actually using." >"${TMPCONFIG}"
else
	echo "Error: could not write tmp file for config generation."
	exit 1
fi

if ( $WHIPTAIL --title "${TOOL_TITLE}" --yesno "${AUTOCONFIG_PATHS}" 10 40 ); then
	unset FAILED_CMD_PATH
	for i in $AUTOCONFIG_BIN; do
		IFS_OLD=${IFS};IFS=:
		BIN_PATH=($i)
		IFS=${IFS_OLD}
		if ( ${WHICH} ${BIN_PATH[0]} &>/dev/null ); then
			BIN_FULL="`${WHICH} ${BIN_PATH[0]}`"
			echo "${BIN_PATH[1]}=\"${BIN_FULL}\"" >>"${TMPCONFIG}"
		else
			FAILED_CMD_PATH="${FAILED_CMD_PATH} ${BIN_PATH[0]}"
			echo "#${BIN_PATH[1]}=\"\"" >>"${TMPCONFIG}"
		fi
	done
	if [ "$FAILED_CMD_PATH" ]; then
		$WHIPTAIL --title "${TOOL_TITLE}" --msgbox "${FAILED_BINS}\n${FAILED_CMD_PATH}\n${FAILED_BINS_FOOT}" 10 60
	fi
else
	for i in $AUTOCONFIG_BIN; do
		IFS_OLD=${IFS};IFS=:
		BIN_PATH=($i)
		IFS=${IFS_OLD}
		echo "#${BIN_PATH[1]}=\"\"" >>"${TMPCONFIG}"
fi