#!/bin/sh

# **********************************************************************
# Pandora FMS Agent Installer for Unix (generic installer)
# (c) 2008-2010 Artica ST
# (c) 2008-2010 Sancho Lerena <slerena@gmail.com>
# 
# This is a generic installer for all Unix-like systems.(AIX, HP-UX, SunOS, Linux, FreeBSD)
# Please see http://www.pandorafms.org. This code is licensed under GPL 2.0 license.
# **********************************************************************

PI_VERSION=3.2
PI_BUILD=101115
OS_NAME=`uname -s`

FORCE=0
LOG_TIMESTAMP=`date +"%Y/%m/%d %H:%M:%S"`
PANDORA_HOME=/usr/share/pandora_agent
PANDORA_BIN=/usr/bin/pandora_agent
PANDORA_EXEC_BIN=/usr/bin/pandora_exec
PANDORA_TEMP=/var/spool/pandora
PANDORA_CFG=/etc/pandora
PANDORA_LOG_DIR=/var/log/pandora
PANDORA_LOG=pandora_agent.log
TENTACLE=/usr/bin/tentacle_client
PANDORA_MAN=/usr/share/man

MODE=$1
PANDORA_BASE=`echo $2 | sed -e 's/\/$//'`
PANDORA_USER=$3

# Check for Perl 5.6.x or higher available
PERL_VERSION=`perl -v | egrep 'v5.6|v5.7|v5.8|v5.9|v5.1[0-9]' | grep perl`

if [ -z "$PERL_VERSION" ]
then
	echo "Perl 5.6.x or higher is not detected. This is required for Pandora FMS"
	echo "Detected: $PERL_VERSION "
	echo "Aborting install..."
	exit 2
fi

UNIX_KIND=`uname -s`
if [ -z "`echo Linux HP-UX SunOS AIX Solaris Darwin BSD bsd FreeBSD | grep \"$UNIX_KIND\"`" ]
then
	echo "This system: '$UNIX_KIND' is not supported by this script"
	echo "Please make the install yourself as it's described in documentation"
	exit 1
fi


# check for root to do the install
if [ -z "`id | grep \"uid=0(root)\"`" ]
then
	echo "You need to be root to do the install. Please made a manual install"
	echo "if you want to install Pandora FMS agent without root"
	echo " "
	echo "Aborting install"
	exit 2
fi

help () {
	echo "Syntax":
	echo " "
	echo "    ./pandora_agent_installer < --mode > [ destination_path ] [ user_to_run_as ]"
	echo " "
	echo "Modes:"
	echo " "
	echo "  --force-install      To force installation if already installed on system"
	echo "  --install            To install Pandora FMS Agent on this system"
	echo "  --uninstall          To uninstall/remove Pandora FMS Agent on this System"
	echo " "	
	echo "Some exaples of how to use the installer:"
	echo " "
	echo "   ./pandora_agent_installer --install"
	echo "   ./pandora_agent_installer --install /opt/pandora"
	echo "   ./pandora_agent_installer --install \"\" pandora"
	echo "   ./pandora_agent_installer --uninstall /opt/pandora"
	echo " "
}

uninstall () {
	OS_NAME=`uname -s`
	if [ "$OS_NAME" = "FreeBSD" ]
	then
		PANDORA_HOME=/usr/local/share/pandora_agent
		PANDORA_BIN=/usr/local/bin/pandora_agent
		PANDORA_EXEC_BIN=/usr/local/bin/pandora_exec
		PANDORA_CFG=/usr/local/etc/pandora
		TENTACLE=/usr/local/bin/tentacle_client
		PANDORA_MAN=/usr/local/man
	fi

	echo "Removing Pandora FMS Agent..."
	rm -Rf $PANDORA_BASE$PANDORA_BIN 2> /dev/null
	rm -Rf $PANDORA_BASE$PANDORA_EXEC_BIN 2> /dev/null
	
	#Test if exist Pandora Server in this machine
	if [ -d $PANDORA_BASE$PANDORA_TEMP/data_in ]
	then
		echo "You have a Pandora Server in this machine. Then don't delete "$PANDORA_TEMP
		rm -Rf $PANDORA_BASE$PANDORA_TEMP/data_out 2> /dev/null
	else
		rm -Rf $PANDORA_BASE$PANDORA_TEMP 2> /dev/null
	fi 
	rm -Rf $PANDORA_BASE$PANDORA_CFG/pandora_agent.conf 2> /dev/null
	
	rm -Rf $PANDORA_BASE/etc/init.d/pandora_agent_daemon 2> /dev/null
	rm -Rf $PANDORA_BASE/sbin/init.d/pandora_agent_daemon 2> /dev/null
	rm -Rf $PANDORA_BASE/etc/rc.pandora_agent_daemon 2> /dev/null
	rm -Rf $PANDORA_BASE/etc/rc?.d/S90pandora_agent_daemon 2> /dev/null
	rm -Rf $PANDORA_BASE/sbin/rc?.d/S90pandora_agent_daemon 2> /dev/null
	rm -Rf $PANDORA_BASE/etc/rc?.d/S90pandora_agent 2> /dev/null
	rm -Rf $PANDORA_BASE/sbin/rc?.d/S90pandora_agent 2> /dev/null
	rm -Rf $PANDORA_BASE/etc/rc.d/rc?.d/S90pandora_agent_daemon 2> /dev/null
	rm -Rf $PANDORA_BASE/etc/rc.d/rc?.d/S90pandora_agent 2> /dev/null
	rm -Rf $PANDORA_BASE/usr/local/etc/rc.d/pandora_agent 2> /dev/null
	rm -Rf /etc/init.d/pandora_agent_daemon 2> /dev/null
	rm -Rf /sbin/init.d/pandora_agent_daemon 2> /dev/null
	rm -Rf /etc/rc.pandora_agent_daemon 2> /dev/null
	rm -Rf /etc/rc?.d/S90pandora_agent_daemon 2> /dev/null
	rm -Rf /sbin/rc?.d/S90pandora_agent_daemon 2> /dev/null
	rm -Rf /etc/rc?.d/S90pandora_agent 2> /dev/null
	rm -Rf /sbin/rc?.d/S90pandora_agent 2> /dev/null
	rm -Rf /etc/rc.d/rc?.d/S90pandora_agent_daemon 2> /dev/null
	rm -Rf /etc/rc.d/rc?.d/S90pandora_agent 2> /dev/null
	rm -Rf /usr/local/etc/rc.d/pandora_agent 2> /dev/null
	
	rm -Rf $PANDORA_BASE$PANDORA_HOME 2> /dev/null
	rm -Rf $PANDORA_BASE$PANDORA_LOG_DIR 2> /dev/null
	rm -Rf $PANDORA_BASE$TENTACLE 2> /dev/null

	rm -Rf $PANDORA_BASE$PANDORA_MAN/{man1,cat1}/tentacle_client.1.gz 2> /dev/null
	rm -Rf $PANDORA_BASE$PANDORA_MAN/{man1,cat1}/pandora_agent.1.gz 2> /dev/null

	# Skip delete of /etc/pandora if exists configuration of a server
	if [ ! -f $PANDORA_BASE/$PANDORA_CFG/pandora_server.conf ]
	then
		rm -Rf $PANDORA_BASE/$PANDORA_CFG 2> /dev/null
	fi

	if [ ! -z "$PANDORA_BASE" ]
	then
		echo "Please delete manually $PANDORA_BASE for complete uninstall"
	fi

	echo " "
	echo "Done"
}

install () {

	OS_VERSION=`uname -r`
	OS_NAME=`uname -s`
	OLDFILENAMETMP=`date +"%Y-%m-%d"`

	if [ "$OS_NAME" = "FreeBSD" ]
	then
		PANDORA_HOME=/usr/local/share/pandora_agent
		PANDORA_BIN=/usr/local/bin/pandora_agent
		PANDORA_EXEC_BIN=/usr/local/bin/pandora_exec
		PANDORA_CFG=/usr/local/etc/pandora
		TENTACLE=/usr/local/bin/tentacle_client
		PANDORA_MAN=/usr/local/man
	fi

	echo "Detecting Unix distribution: $OS_NAME version $OS_VERSION"
	if [ -f $PANDORA_BASE$PANDORA_HOME ] && [ "$FORCE" = "0" ]
	then
		echo "Seems that default dir already exists. Please use --force to"
		echo "force installer to install on $PANDORA_BASE$PANDORA_HOME"
		exit
	else
		echo "Checking default dir $PANDORA_BASE$PANDORA_HOME..."
	fi

	if [ -f $PANDORA_BASE$PANDORA_BIN ] && [ "$FORCE" = "0" ]
	then
		echo "Seems that $PANDORA_BASE$PANDORA_BIN already exists. Please use --force to"
		echo "force installer to reinstall overwriting it"
		echo " "
		exit
	else
		echo "Checking Pandora FMS Agent on $PANDORA_BASE$PANDORA_BIN...."
	fi

    # Alter dynamically the daemon launcher and setup the new path 
    # if PANDORA_BASE is customized.

    if [ ! -z "$PANDORA_BASE" ]
    then
	if [ "$OS_NAME" = "FreeBSD" ]
	then
	    DAEMON_SCRIPT=FreeBSD/pandora_agent
            DAEMON_TEMP=pandora_agent_daemon_temp
	else
            DAEMON_SCRIPT=pandora_agent_daemon
            DAEMON_TEMP=pandora_agent_daemon_temp
	fi
        
        AGENT_CFG=$OS_NAME/pandora_agent.conf
        AGENT_CFG_TEMP=$OS_NAME/pandora_agent.conf.temp

        echo $PANDORA_BASE > PANDORA_BASE.temp
        sed 's/\//\\\//g' PANDORA_BASE.temp > PANDORA_BASE.temp2

        PANDORA_BASE_DECODED=`cat PANDORA_BASE.temp2`
        rm PANDORA_BASE.temp PANDORA_BASE.temp2

	if [ "$OS_NAME" = "FreeBSD" ]
	then
	    sed -e "s/^PATH\=[.]*/PATH\=$PANDORA_BASE_DECODED\/usr\/local\/bin\:/g" $DAEMON_SCRIPT > $DAEMON_TEMP
	    mv $DAEMON_TEMP $DAEMON_SCRIPT

	    sed -e "s/^command\=[.]*/command\=$PANDORA_BASE_DECODED/g" $DAEMON_SCRIPT > $DAEMON_TEMP
	    mv $DAEMON_TEMP $DAEMON_SCRIPT

	    sed -e 's/^command_args\=\"[.]*/command_args\=\"$PANDORA_BASE_DECODED/g' $DAEMON_SCRIPT > $DAEMON_TEMP
	    mv $DAEMON_TEMP $DAEMON_SCRIPT

	    sed -e 's/^required_files\=\"[.]*/required_files\=\"$PANDORA_BASE_DECODED/g' $DAEMON_SCRIPT > $DAEMON_TEMP
	    mv $DAEMON_TEMP $DAEMON_SCRIPT
	else
            sed -e "s/^PATH\=[.]*/PATH\=$PANDORA_BASE_DECODED\/usr\/bin\:/g" $DAEMON_SCRIPT > $DAEMON_TEMP
            mv  $DAEMON_TEMP $DAEMON_SCRIPT

            sed -e "s/^PANDORA_PATH\=[.]*/PANDORA_PATH\=$PANDORA_BASE_DECODED/g"  $DAEMON_SCRIPT > $DAEMON_TEMP
            mv  $DAEMON_TEMP $DAEMON_SCRIPT

            sed -e "s/^LOGFILE\=[.]*/LOGFILE\=$PANDORA_BASE_DECODED/g"  $DAEMON_SCRIPT > $DAEMON_TEMP
            mv  $DAEMON_TEMP $DAEMON_SCRIPT

            sed -e "s/^DAEMON\=[.]*/DAEMON\=$PANDORA_BASE_DECODED/g"  $DAEMON_SCRIPT > $DAEMON_TEMP
            mv  $DAEMON_TEMP $DAEMON_SCRIPT
 
	    sed -e "s/^PANDORA_USER\=.*/PANDORA_USER\=$PANDORA_USER/g"  $DAEMON_SCRIPT > $DAEMON_TEMP
            mv  $DAEMON_TEMP $DAEMON_SCRIPT
	fi

        sed -e "s/^temporal [.]*/temporal $PANDORA_BASE_DECODED/g" $AGENT_CFG > $AGENT_CFG_TEMP
        mv $AGENT_CFG_TEMP $AGENT_CFG

        sed -e "s/^logfile [.]*/logfile $PANDORA_BASE_DECODED/g" $AGENT_CFG > $AGENT_CFG_TEMP
        mv $AGENT_CFG_TEMP $AGENT_CFG
    fi
    echo "Creating Pandora FMS Agent home directory at $PANDORA_BASE$PANDORA_HOME"
    if [ ! -z "$PANDORA_BASE" ]
    then
	mkdir -p $PANDORA_BASE 2> /dev/null
	mkdir -p $PANDORA_BASE/var/log 2> /dev/null
	mkdir -p $PANDORA_BASE/$PANDORA_MAN/man1 2> /dev/null
	if [ "$OS_NAME" = "FreeBSD" ]
	then
            mkdir -p $PANDORA_BASE/usr/local/bin 2> /dev/null
	else
            mkdir -p $PANDORA_BASE/usr/bin 2> /dev/null
	fi
    fi

	mkdir -p $PANDORA_BASE$PANDORA_HOME 2> /dev/null

	# Create directories based on PANDORA_BASE 

	mkdir -p $PANDORA_BASE/tmp 2> /dev/null
	mkdir -p $PANDORA_BASE$PANDORA_TEMP/data_out 2> /dev/null
	mkdir -p $PANDORA_BASE$PANDORA_CFG 2> /dev/null
	mkdir -p $PANDORA_BASE$PANDORA_LOG_DIR 2> /dev/null

	# Set the user the agent will run as
	if [ "$PANDORA_USER" != "" ]
	then
		sed -e "s/.*pandora_user .*/pandora_user $PANDORA_USER/" $AGENT_CFG > $AGENT_CFG_TEMP 2> /dev/null && \
		mv $AGENT_CFG_TEMP $AGENT_CFG
		chmod 755 pandora_agent_daemon
		chown -R $PANDORA_USER $PANDORA_BASE
	else
		PANDORA_USER="root"
	fi

	# Create logfile
	if [ ! -z "`touch $PANDORA_BASE$PANDORA_LOG_DIR/$PANDORA_LOG`" ]
	then
		echo "Seems to be a problem generating logfile ($PANDORA_BASE$PANDORA_LOG_DIR/$PANDORA_LOG) please check it";
	else
		echo "Created logfile at $PANDORA_BASE$PANDORA_LOG_DIR/$PANDORA_LOG..."
	fi
	echo "$LOG_TIMESTAMP Pandora FMS installer has created this file at startup" > $PANDORA_BASE$PANDORA_LOG_DIR/$PANDORA_LOG

	# Copying agent and securing it
	echo "Copying Pandora FMS Agent to $PANDORA_BASE$PANDORA_BIN..."
	cp pandora_agent $PANDORA_BASE$PANDORA_BIN
	chmod 755 $PANDORA_BASE$PANDORA_BIN
	cp pandora_exec $PANDORA_BASE$PANDORA_EXEC_BIN
	chmod 755 $PANDORA_BASE$PANDORA_EXEC_BIN
	if [ "$OS_NAME" = "FreeBSD" ]
	then
		chown root:wheel $PANDORA_BASE$PANDORA_BIN
		chown root:wheel $PANDORA_BASE$PANDORA_EXEC_BIN
	else
		chown root:root $PANDORA_BASE$PANDORA_BIN
		chown root:root $PANDORA_BASE$PANDORA_EXEC_BIN
	fi

	echo "Copying Pandora FMS Agent configuration file to $PANDORA_BASE$PANDORA_CFG/pandora_agent.conf..."
	if [ -f $PANDORA_BASE/$PANDORA_CFG/pandora_agent.conf ]
	then
		cp $PANDORA_BASE/$PANDORA_CFG/pandora_agent.conf $PANDORA_BASE/$PANDORA_CFG/pandora_agent.conf.$OLDFILENAMETMP
		echo "Backing up old configuration file to $PANDORA_BASE/$PANDORA_CFG/pandora_agent.conf.$OLDFILENAMETMP"
	fi

	echo "Copying Pandora FMS Agent plugins to $PANDORA_BASE$PANDORA_HOME/plugins..."
	cp -r plugins $PANDORA_BASE$PANDORA_HOME
	chmod -R 700 $PANDORA_BASE$PANDORA_HOME/plugins
	ln -s $PANDORA_BASE$PANDORA_HOME/plugins $PANDORA_BASE$PANDORA_CFG

	echo "Copying Pandora FMS Agent collections to $PANDORA_BASE$PANDORA_HOME/collections..."
	cp -r collections $PANDORA_BASE$PANDORA_HOME
	chmod -R 700 $PANDORA_BASE$PANDORA_HOME/collections
	ln -s $PANDORA_BASE$PANDORA_HOME/collections $PANDORA_BASE$PANDORA_CFG

	echo "Copying tentacle client to $PANDORA_BASE$TENTACLE"
	cp tentacle_client $PANDORA_BASE$TENTACLE
	chmod 755 $PANDORA_BASE$TENTACLE

	echo "Installing the Pandora Agent and Tentacle Client manuals"
	cp man/man1/tentacle_client.1.gz $PANDORA_BASE/$PANDORA_MAN/man1
	chmod 644 $PANDORA_BASE/$PANDORA_MAN/man1/tentacle_client.1.gz
	cp man/man1/pandora_agent.1.gz $PANDORA_BASE/$PANDORA_MAN/man1
	chmod 644 $PANDORA_BASE/$PANDORA_MAN/man1/pandora_agent.1.gz

	echo "Setting secure permissions and ownership for all Pandora FMS Agent files..."
	chown -R $PANDORA_USER $PANDORA_BASE$PANDORA_HOME
	chmod -R 700 $PANDORA_BASE$PANDORA_TEMP/data_out
	chmod 640 $PANDORA_BASE$PANDORA_LOG_DIR/$PANDORA_LOG
	if [ "$OS_NAME" = "FreeBSD" ]
	then
		chown $PANDORA_USER:wheel $PANDORA_BASE$PANDORA_LOG_DIR/$PANDORA_LOG	
		chown $PANDORA_USER:daemon $PANDORA_BASE$PANDORA_TEMP
		chmod -R 770 $PANDORA_BASE$PANDORA_TEMP
		chmod 775 $PANDORA_BASE$PANDORA_TEMP
	else
		chown root:root $PANDORA_BASE$PANDORA_LOG_DIR/$PANDORA_LOG
	fi

    echo "Copying default agent configuration to $PANDORA_BASE$PANDORA_CFG/pandora_agent.conf"

	cp $OS_NAME/pandora_agent.conf $PANDORA_BASE$PANDORA_CFG/pandora_agent.conf
	chmod 600 $PANDORA_BASE$PANDORA_CFG/pandora_agent.conf
	chown $PANDORA_USER $PANDORA_BASE$PANDORA_CFG/pandora_agent.conf
	chmod 711 $PANDORA_BASE$PANDORA_LOG_DIR
	chown $PANDORA_USER $PANDORA_BASE$PANDORA_LOG_DIR/$PANDORA_LOG

	if [ "$OS_NAME" = "FreeBSD" ]
	then
		echo "Linking start-up daemon script 'pandora_agent' on $OS_NAME";
	else
		echo "Linking start-up daemon script 'pandora_agent_daemon' on $OS_NAME";
	fi

	if [ "$OS_NAME" = "AIX" ]
	then
		cp pandora_agent_daemon /etc/rc.pandora_agent_daemon		
		ln -s /etc/rc.pandora_agent_daemon /etc/rc.d/rc2.d/S90pandora_agent_daemon
		chmod 755 $PANDORA_STARTUP
		chown root:root $PANDORA_STARTUP
		echo "Pandora FMS agent has been included in /etc/rc.d/rc2.d/S90pandora_agent_daemon"
	fi
	
	if [ $OS_NAME = "HP-UX" ]
	then
		PANDORA_STARTUP=/sbin/init.d/pandora_agent_daemon
		cp pandora_agent_daemon $PANDORA_STARTUP
		ln -s /sbin/init.d/pandora_agent_daemon /sbin/rc3.d/S90pandora_agent_daemon 2> /dev/null
		ln -s /sbin/init.d/pandora_agent_daemon /sbin/rc2.d/S90pandora_agent_daemon 2> /dev/null
		chmod 755 $PANDORA_STARTUP
		chown root:root $PANDORA_STARTUP
		echo "Pandora FMS agent has been included in /sbin/rcX.d/S90pandora_agent_daemon"
	fi
	
	if [ $OS_NAME = "SunOS" ]
	then
		PANDORA_STARTUP=/etc/init.d/pandora_agent_daemon
		cp pandora_agent_daemon $PANDORA_STARTUP 
		ln -s /etc/init.d/pandora_agent_daemon /etc/rc2.d/S90pandora_agent_daemon 2> /dev/null
		chmod 755 $PANDORA_STARTUP
		chown root:root $PANDORA_STARTUP
		echo "Pandora FMS agent has been included in /etc/rc2.d/S90pandora_agent_daemon"
	fi
	
	if [ $OS_NAME = "Linux" ]
	then
		PANDORA_STARTUP=/etc/init.d/pandora_agent_daemon
		cp pandora_agent_daemon $PANDORA_STARTUP
		if [ -d /etc/rc.d/ ]
		then
			ln -s /etc/init.d/pandora_agent_daemon /etc/rc.d/rc2.d/S90pandora_agent 2> /dev/null
			ln -s /etc/init.d/pandora_agent_daemon /etc/rc.d/rc3.d/S90pandora_agent 2> /dev/null
		else
			ln -s /etc/init.d/pandora_agent_daemon /etc/rc2.d/S90pandora_agent 2> /dev/null
			ln -s /etc/init.d/pandora_agent_daemon /etc/rc2.d/S90pandora_agent 2> /dev/null
		fi
		chmod 755 $PANDORA_STARTUP
		chown root:root $PANDORA_STARTUP
	fi

	if [ "$OS_NAME" = "FreeBSD" ]
	then
		PANDORA_STARTUP=/usr/local/etc/rc.d/pandora_agent
		cp FreeBSD/pandora_agent $PANDORA_STARTUP
		chmod 555 $PANDORA_STARTUP
		chown root:wheel $PANDORA_STARTUP
	fi

	echo "Installing the Pandora Agent and Tentacle Client manuals"
	cp man/man1/tentacle_client.1.gz $PANDORA_BASE/$PANDORA_MAN/man1
	chmod 644 $PANDORA_BASE/$PANDORA_MAN/man1/tentacle_client.1.gz
	cp man/man1/pandora_agent.1.gz $PANDORA_BASE/$PANDORA_MAN/man1
	chmod 644 $PANDORA_BASE/$PANDORA_MAN/man1/pandora_agent.1.gz

	echo "Done."
	echo " "
	echo "You have your startup script ready at $PANDORA_STARTUP"
	echo " "
	echo "Tentacle is the default transfer mode since 2.0 version."
	echo " "
	echo "If you want to use SSH, firstly you need to copy your public SSH keys "
	echo " ($HOME/.ssh/id_dsa) under /home/pandora/.ssh/authorized_keys "
	echo "on your Pandora FMS Server host"
	echo " "
	echo "You also need to setup your $PANDORA_BASE$PANDORA_CFG/pandora_agent.conf config file"
	echo " "
	if [ "$OS_NAME" = "FreeBSD" ]
	then
		echo "Define 'pandora_agent_enable=\"YES\"' in /etc/rc.conf to enable the daemon."
	else
		echo "Check your startup configuration to be sure Pandora FMS Agent is ready "
		echo "to start automatically when system restarts":
	fi

}

if [ ! -f "pandora_agent" ]
then
	echo " "
	echo "Execute installer from the directory where you have your files. "
	help
	exit 1
fi

# Script banner at start
echo " "
echo "Pandora FMS Agent UNIX Installer $PI_VERSION $PI_BUILD (c) 2008-2010 ArticaST"
echo "This program is licensed under GPL2 Terms. http://pandorafms.com"
echo " "


case "$MODE" in

'--force-install')
	FORCE=1
	install
	exit
	;;

'--install')
	install
	exit
	;;

'--uninstall')
	uninstall
	exit
	;;

*)
	help
	;;
esac