#!/bin/bash

# Pandora FMS Server Installer (c) 2008-2009 Artica ST
# Linux Version (generic), for SuSe and Debian/Ubuntu only
# other Linux distros could not work properly without modifications
# Please see http://www.pandorafms.org
# v3.0 Build 090810
# This code is licensed under GPL 2.0 license.
# **********************************************************************

MODE=$1
SECOPT=$2

get_distro () {

	# Get Linux Distro type and version
	if [ -f "/etc/SuSE-release" ]
	then
		OS_VERSION=`cat /etc/SuSE-release | grep VERSION | cut -f 3 -d " "`
		LINUX_DISTRO=SUSE
	else
		if [ -f "/etc/lsb-release" ]
		then
			OS_VERSION=`cat /etc/lsb-release | grep DISTRIB_RELEASE | cut -f 2 -d "="`
			LINUX_DISTRO=UBUNTU
			OS_VERSION="UBUNTU $OS_VERSION"
		else
			if [ -f "/etc/debian_version" ]
			then
				OS_VERSION=`cat /etc/debian_version`
				OS_VERSION="DEBIAN $OS_VERSION"
				LINUX_DISTRO=DEBIAN
			else
				if [ -f "/etc/fedora-release" ]
				then
					OS_VERSION=`cat /etc/fedora-release | cut -f 4 -d " "`
					OS_VERSION="FEDORA $OS_VERSION"
					LINUX_DISTRO=FEDORA
				else
					LINUX_DISTRO=GENERIC
					OS_VERSION=`uname -r`
				fi
			fi
		fi
	fi
	echo $LINUX_DISTRO
}


install () {

	perl Makefile.PL > output 2>&1  #&& sleep 2 &&  cat output | grep "found" | wc -l 
	DEPENDENCIAS=`cat output | grep "found" | wc -l`
	if [ $DEPENDENCIAS -gt 0 ]
	then
		echo "You are missing the following dependencies"
		echo " "
		cat output | awk -F ": prerequisite" '{print $2}' | awk -F " " '{print $1}'
		echo "The complete installation guide is at: "http://www.openideas.info/wiki/index.php?title=Pandora_2.0:Documentation_en:Install_Server#Pandora_FMS_Server_installation" "
		echo " "
		echo "Debian-based distribution do:"
		echo "	$ apt-get install snmp snmpd libtime-format-perl libxml-simple-perl libnetaddr-ip-perl libdbi-perl libxml-simple-perl libnetaddr-ip-perl libhtml-parser-perl wmi-client xprobe2 libmail-sendmail-perl"
		echo " "
		echo "RPM distribution do"
		echo " "
		echo "	$ yum perl-XML-SAX* perl-Tie* perl-XML-Simple* perl-IO-Socket* perl-Time-modules* perl-NetAddr-IP* perl-DateTime* perl-ExtUtils perl-DBI"
		echo " "
		echo "To get it from source through CPAN do"
		echo " "
		echo "  $ cpan Digest::MD5 Time::Local DBI XML::Simple IO::Socket Time::HiRes Time::Format NetAddr::IP Mail::Sendmail Net::Traceroute::PurePerl HTML::Entities"
		echo " "
		rm output
	else
	
		DISTRO=`get_distro`
		
		if [ "$DISTRO" == "UBUNTU" ]
		then
			echo "UBUNTU distribution detected"
		fi

		if [ "$DISTRO" == "SUSE" ]
		then
			echo "SUSE distribution detected"
		fi
		
		echo "Installing binaries and libraries"
		make
		make install
		
		echo "Creating common Pandora FMS directories"
		mkdir /var/spool/pandora 2> /dev/null
		mkdir /var/spool/pandora/data_in 2> /dev/null
		mkdir /var/spool/pandora/data_in/conf 2> /dev/null
		mkdir /var/spool/pandora/data_in/md5 2> /dev/null
		id pandora
		if [ $? -eq 0 ]; then
			echo " "
			echo "User pandora does exist, make sure the SSH directories are correct"
		else
			echo "Creating 'pandora' user"
			useradd pandora 
			mkdir /home/pandora 2> /dev/null
			mkdir /home/pandora/.ssh 2> /dev/null
			chown -R pandora /home/pandora 
		fi
		mkdir /var/log/pandora 2> /dev/null
		
		echo "Giving proper permission to /var/spool/pandora"
		if [ "$DISTRO" == "UBUNTU" ]
		then
			chown -R pandora:www-data /var/spool/pandora/ 
		else
			chown -R pandora:www /var/spool/pandora/
		fi
		
		echo "Creating setup directory in /etc/pandora"
		mkdir /etc/pandora 2> /dev/null
		if [ -e /etc/pandora/pandora_server.conf ]
		then
			OLDFILENAMETMP=`date +"%Y-%m-%d"`
			echo "Old installation detected, backing up pandora_server.conf.$ODFILENAMETMP"
			mv /etc/pandora/pandora_server.conf /etc/pandora/pandora_server.conf.$OLDFILENAMETMP
		fi
		cp conf/pandora_server.conf /etc/pandora/
		chmod 770 /etc/pandora/pandora_server.conf
		
		echo "Copying the daemon script into /etc/init.d/pandora_server"
		cp util/pandora_server /etc/init.d/		
		
		if [ "$DISTRO" == "UBUNTU" ]
		then
			echo "Linking startup script to /etc/rc2.d"
			ln -s /etc/init.d/pandora_server /etc/rc2.d/S90pandora_server
		else
			INITLV=`cat /etc/inittab | grep "[0-9]\:initdefault" | cut -f 2 -d ":"`
			echo "Linking startup script to /etc/rc.d/rc$INITLV.d"
			ln -s /etc/init.d/pandora_server /etc/rc.d/rc$INITLV.d/S90pandora_server
		fi

		echo "Creating logrotate.d entry for Pandora FMS log management"
		cp util/pandora_logrotate /etc/logrotate.d/pandora

		if [ "$SECOPT" != "--no-tentacle" ]
		then
			if [ "$DISTRO" == "UBUNTU" ]
			then
				# Tentacle server install (Ubuntu)
				echo "Installing tentacle server in /etc/rc2.d/S80tentacle_serverd"
				cp bin/tentacle_server /usr/local/bin
				cp util/tentacle_serverd /etc/init.d/tentacle_serverd
				ln -s /etc/init.d/tentacle_serverd /etc/rc2.d/S80tentacle_serverd
			else
				# Tentacle server install (SUSE)
				echo "Installing tentacle server in /etc/rc.d/rc$INITLV.d/S80tentacle_serverd"
				cp bin/tentacle_server /usr/local/bin
				cp util/tentacle_serverd /etc/init.d/tentacle_serverd
				ln -s /etc/init.d/tentacle_serverd /etc/rc.d/rc$INITLV.d/S80tentacle_serverd
			fi
		fi

		echo "Creating Pandora FMS distribution directory in /usr/share/pandora"
		mkdir /usr/share/pandora 2> /dev/null
		cp -R util /usr/share/pandora
		if [ -d /etc/cron.daily ]
		then
			echo "#!/bin/bash" > /etc/cron.daily/pandora_purge_db	
			echo "perl /usr/share/pandora/util/pandora_db.pl /etc/pandora/pandora_server.conf" >> /etc/cron.daily/pandora_purge_db	
			chmod +x /etc/cron.daily/pandora_purge_db
		else
			echo "You're probably not using cron for automatic scheduling. You should schedule the following command to run frequently (daily) on your master server:"
			echo "   perl /usr/share/pandora/util/pandora_db.pl /etc/pandora/pandora_server.conf"
		fi
		rm output
	fi

}

uninstall () {
	if [ "`uname -s`" != "Linux" ]; then
			echo "This is not a Linux-based distro. Uninstaller is currently not working for your OS"
	fi
	echo "Removing Pandora Servers"
		rm -Rf /var/spool/pandora/data_in/

	echo "If the user Pandora is not being used for any other operations, please delete using the following commands:"
	echo "   userdel pandora"
	echo "   rm -Rf /home/pandora/"
	
    ## Just to clarify here. Some people (like me) are using the pandora user 
    ## for other purposes and/or using an LDAP-based user management
	## I would hate to have a script clear out this users' information without any notification

	rm -Rf /var/log/pandora/  2> /dev/null 
	rm -Rf /etc/pandora/pandora_server.conf  2> /dev/null
	rm -Rf /etc/init.d/pandora_server  2> /dev/null 
	rm -Rf /etc/rc2.d/S90pandora_server  2> /dev/null 
	rm -Rf /etc/rc.d/rc3.d/S90pandora_server  2> /dev/null 
	rm -Rf /usr/local/bin/pandora_server  2> /dev/null
	rm -Rf /usr/bin/pandora_server 2> /dev/null
	rm -Rf /usr/share/pandora
	rm -Rf /etc/cron.daily/pandora_purge_db
	echo "Done"
}

help () {
        echo "     --install           To install Pandora FMS Servers on this system (You have to be root)"
        echo "     --uninstall         To uninstall and remove Pandora FMS Servers on this System"
	echo " "
	echo " Additional parameters (after --install) "
        echo " "
	echo "     --no-tentacle        Skip tentacle server installation (by default tentacle server installed)"
	echo " "
}

# Script banner at start
echo " "
echo "Pandora FMS 3.0 Server Installer (c) 2008-2009 Artica ST"
echo "This program is licensed under GPL2 Terms. http://pandorafms.org"
echo " "

case "$MODE" in

'--install')
        install
        exit
        ;;

'--uninstall')
        uninstall
        exit
        ;;

*)
        help
esac