#!/bin/sh

# **********************************************************************
# Pandora FMS Agent Installer for Unix (generic installer)
# (c) 2008-2009 Artica ST
# (c) 2008-2009 Sancho Lerena <slerena@gmail.com>
# 
# This is a generic installer for all Unix-like systems.(AIX, HP-UX, SunOS, Linux)
# Please see http://www.pandorafms.org
# v3.0 Build 091215
# This code is licensed under GPL 2.0 license.
# **********************************************************************

PI_VERSION=3.0.0RC2
PI_BUILD=091119
OS_NAME=`uname -s`

PANDORA_HOME=/usr/share/pandora_agent
PANDORA_BIN=/usr/bin/pandora_agent
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
FORCE=0
USE_LINKS=0

LOG_TIMESTAMP=`date +"%Y/%m/%d %H:%M:%S"`

MODE=$1

if [ ! -z "$2" ]
then
	PANDORA_HOME=$2
fi

# Check for Perl 5.8.x available
PERL_VERSION=`perl -v | egrep 'v5.8|v5.9|v5.1[0-9]' | grep perl`

if [ -z "$PERL_VERSION" ]
then
	echo "Perl 5.8.x 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 | 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

if [ ! -f "pandora_agent" ]
then
	echo " "
	echo "Execute installer from the directory where you have your files. For example:"
	echo " "
	echo "   cd /tmp/pandora_install "
	echo "   ./pandora_agent_installer --install"
	echo "   ./pandora_agent_installer --install-with-links /var/opt/PandoraFMS"
	echo " "
	exit 1
fi

uninstall () {
	echo "Removing Pandora FMS Agent..."
	rm -Rf $PANDORA_BIN
	rm -Rf $PANDORA_TEMP
	rm -Rf $PANDORA_CFG/pandora_agent.conf
	
	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 $PANDORA_HOME
	rm -Rf $PANDORA_LOG_DIR
	rm -Rf $TENTACLE

	# Skip delete of /etc/pandora if exists configuration of a server
	if [ ! -f /etc/pandora/pandora_server.conf ]
	then
		rm -Rf /etc/pandora
	fi

	echo "If you install Pandora FMS agent in a custom directory, you should"
	echo " delete it yourself with command rm -Rf <yourdir>, for example:"
	echo " "
	echo "    rm -Rf /opt/software/pandora"
	echo " "
	echo "Done"
}

install () {

	OS_VERSION=`uname -r`
	OS_NAME=`uname -s`
	OLDFILENAMETMP=`date +"%Y-%m-%d"`
	echo "Detecting Unix distribution: $OS_NAME version $OS_VERSION"
	if [ -f $PANDORA_HOME ] && [ "$FORCE" = "0" ]
	then
		echo "Seems that default dir already exists. Please use --force to"
		echo "force installer to install on $PANDORA_HOME"
		exit
	else
		echo "Checking default dir $PANDORA_HOME..."
	fi

	if [ -f $PANDORA_BIN ] && [ "$FORCE" = "0" ]
	then
		echo "Seems that $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_BIN...."
	fi

	echo "Creating Pandora FMS Agent home directory at $PANDORA_HOME ..."
	mkdir -p $PANDORA_HOME 2> /dev/null
	
	# IF USE_LINKS = 1 then append HOME to other paths
	if [ "$USE_LINKS" = 1 ]
	then
		mkdir -p $PANDORA_HOME/$PANDORA_TEMP/data_out 2> /dev/null
		mkdir -p $PANDORA_LOG_DIR 2> /dev/null
		
		ln -s $PANDORA_HOME /etc/pandora
		ln -s $PANDORA_HOME/$PANDORA_TEMP /var/spool/pandora
	else
		# Create directories on /
		mkdir -p $PANDORA_TEMP/data_out 2> /dev/null
		mkdir -p $PANDORA_CFG 2> /dev/null
		mkdir -p $PANDORA_LOG_DIR 2> /dev/null
	fi

	# Create logfile
	if [ ! -z "`touch $PANDORA_LOG_DIR/$PANDORA_LOG`" ]
	then
		echo "Seems to be a problem generating logfile ($PANDORA_LOG_DIR/$PANDORA_LOG) please check it";
	else
		echo "Created logfile at $PANDORA_LOG_DIR/$PANDORA_LOG..."
	fi

	echo "$LOG_TIMESTAMP Pandora FMS installer has created this file at startup" > $PANDORA_LOG_DIR/$PANDORA_LOG

	# Copying agent and securing it
	echo "Copying Pandora FMS Agent to $PANDORA_BIN..."
	cp pandora_agent $PANDORA_BIN
	chmod 755 $PANDORA_BIN
	chown root:root $PANDORA_BIN
	
	echo "Copying Pandora FMS Agent configuration file to $PANDORA_HOME/pandora_agent.conf..."
	if [ -f /etc/pandora/pandora_agent.conf ]
	then
		cat /etc/pandora/pandora_agent.conf > /etc/pandora/pandora_agent.conf.$OLDFILENAMETMP
		echo "Backing up old configuration file to /etc/pandora_agent.conf.$OLDFILENAMETMP"
	fi
        
	echo "Copying default agent configuration to $PANDORA_HOME/pandora_agent.conf"
	cp $OS_NAME/pandora_agent.conf $PANDORA_HOME/pandora_agent.conf
	chmod 600 $PANDORA_HOME/pandora_agent.conf
	chown root $PANDORA_HOME/pandora_agent.conf

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

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

	if [ "$USE_LINKS" != 1 ]
	then
		echo "Linking Pandora FMS Agent plugins directory to $PANDORA_CFG/plugins..."
		rm $PANDORA_CFG/plugins 2> /dev/null
		ln -s $PANDORA_HOME/plugins $PANDORA_CFG/plugins 2> /dev/null

		echo "Linking Pandora FMS Agent configuration to $PANDORA_CFG/pandora_agent.conf..."
		rm $PANDORA_CFG/pandora_agent.conf 2> /dev/null
		ln -s $PANDORA_HOME/pandora_agent.conf $PANDORA_CFG/pandora_agent.conf 
	fi

	echo "Setting secure permissions and ownership for all Pandora FMS Agent files..."
	chown -R root $PANDORA_HOME
	chmod -R 600 $PANDORA_TEMP
	chown root $PANDORA_TEMP
	chmod 640 $PANDORA_LOG_DIR/$PANDORA_LOG
	chown root:root $PANDORA_LOG_DIR/$PANDORA_LOG

	echo "Linking start-up daemon script 'pandora_agent_daemon' on $OS_NAME";

	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
		echo "Pandora FMS agent has been included in /etc/rc.d/rc2.d/S90pandora_agent_daemon"
	fi
	
	if [ $OS_NAME = "HP-UX" ]
	then
		cp pandora_agent_daemon /sbin/init.d/pandora_agent_daemon
		ln -s /sbin/init.d/pandora_agent_daemon /sbin/rc3.d/S90pandora_agent_daemon
		ln -s /sbin/init.d/pandora_agent_daemon /sbin/rc2.d/S90pandora_agent_daemon
		echo "Pandora FMS agent has been included in /sbin/rcX.d/S90pandora_agent_daemon"
	fi
	
	if [ $OS_NAME = "SunOS" ]
	then
		cp pandora_agent_daemon /etc/init.d/pandora_agent_daemon
		ln -s /etc/init.d/pandora_agent_daemon /etc/rc2.d/S90pandora_agent_daemon
		echo "Pandora FMS agent has been included in /etc/rc2.d/S90pandora_agent_daemon"
	fi
	
	if [ $OS_NAME = "Linux" ]
	then
		cp pandora_agent_daemon /etc/init.d/pandora_agent_daemon
		if [ -d /etc/rc.d/ ]
		then
			ln -s /etc/init.d/pandora_agent_daemon /etc/rc.d/rc2.d/S90pandora_agent
			ln -s /etc/init.d/pandora_agent_daemon /etc/rc.d/rc3.d/S90pandora_agent
		else
			ln -s /etc/init.d/pandora_agent_daemon /etc/rc2.d/S90pandora_agent
			ln -s /etc/init.d/pandora_agent_daemon /etc/rc2.d/S90pandora_agent
		fi
	fi

	echo "Done."
	echo " "
	echo "You have your startup script ready at $PANDORA_STARTUP"
	echo " "
	echo "Tentacle is the default transfer mode since 2.0 version."
	echo "If you want to use SSH, firstly you need to copy your public SSH keys "
	echo " ($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_CFG/pandora_agent.conf config file"
	echo " "
	echo "Check your startup configuration to be sure Pandora FMS Agent is ready "
	echo "to start automatically when system restarts":

}

help () {
    echo "  --force-install      To force installation if already installed on system"
    echo "                       (Not compatible with --install-with-links "
    echo "  --install            To install Pandora FMS Agent on this system"
    echo "  --uninstall          To uninstall/remove Pandora FMS Agent on this System"
    echo "  --install-with-links <base_dir> "
    echo "                       To install Pandora FMS in a defined dir <base_dir>"
    echo "                       and set all Pandora FMS directories as links to this"
    echo " "
}

# Script banner at start
echo " "
echo "Pandora FMS Agent UNIX Installer $PI_VERSION $PI_BUILD (c) 2008-2009 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
        ;;

'--install-with-links')
        USE_LINKS=1
        install
        exit
        ;;

'--uninstall')
        uninstall
        exit
        ;;

*)
        help
        ;;
esac