Script to add a host with the centreon command line api

#!/bin/bash -e
# 
# centreon_add_host
# 
# Quickly add a host to centreon
# 
# 
# Author: Jean-Louis Girard
# 
#
 
clapi="/usr/share/centreon/www/modules/centreon-clapi/core/centreon"
 
#Edit the following 4 fields
centreonAdmin="<adminUser>"
centreonTemplate="<serverTemplateToUse>"
centreonPoller="<central>"
centreonGroup="<centreonGroup>"

HNAME="NULL"
HALIAS="NULL"
HIP="NULL"
ADMINP="NULL"
HFILE="NULL"

addedHost="FALSE"


#This program must be run as root
if [[ "$(whoami)" != "root" ]]
then
    echo "Must be root to execute ..."
    exit
fi

usage()
{
    echo "Usage: `basename $0` -h <Host Name> -a <Host Alias> -i <Host IP>"
    echo "       `basename $0` -f </path_to_file>"
    echo "-p <admin_Pass>"
    echo "If -p is not specified it will be entered during execution."
    echo "File format: Each line contains  <Host IP>,<Host Name>,<Host Alias> each field separated by a ,"
}

while getopts h:a:i:f:p: OPTION
do
    case $OPTION in

        h)
            HNAME=$OPTARG
            ;;
        a)
            HALIAS=$OPTARG
            ;;
        i)
            HIP=$OPTARG
            ;;
        f)
            HFILE=$OPTARG
            ;;
        p)
            ADMINP=$OPTARG
            ;;
        ?)
            usage
            exit
            ;;
    esac
done

#Ask for password until valid
while ! $clapi -u $centreonAdmin -p $ADMINP -a POLLERLIST > /dev/null
do
    read -s -p "Admin Password: " ADMINP
    echo ""
done

function addHost
{
    #The function must receive at least 3 parameters  Host IP, HostName, Host Alias
    if [[ $# -ne 3 ]]
    then
        echo "Missing information to add $1 $2 $3"
        exit
    fi


    F_HIP=$1
    F_HNAME=$2
    F_HALIAS=$3

    # Only add the host if there is a valid dns entry
    if nslookup $F_HIP 2>/dev/null | grep $F_HNAME > /dev/null 2>&1
    then
        echo "Adding $F_HIP $F_HNAME $F_HALIAS..."
        # add the server to centreon and only apply the template if successful ( host doesn't already exist on centreon )
        if  $clapi -u $centreonAdmin -p $ADMINP -o HOST -a ADD -v "$F_HNAME;$F_HALIAS;$F_HIP;$centreonTemplate;$centreonPoller;$centreonGroup"
        then
            echo "Applying template $centreonTemplate to $F_HNAME"
            $clapi -u $centreonAdmin -p $ADMINP -o HOST -a applytpl -v "$F_HNAME"
            addedHost="TRUE"
        fi

    else
        echo "The DNS entry for the ip [[ $F_HIP ]] does not match the name [[ $F_HNAME ]]. Not adding to centreon..."
    fi

}

#Verify that only a host or a file  is passed as arguments and not both
if [[ "$HIP" != "NULL" ]] || [[ "$HNAME" != "NULL" ]] || [[ "$HALIAS" != "NULL" ]] &&  [[ "$HFILE" != "NULL" ]]
then
    echo "Please only specify  a host's information or a file, not both."
    exit
fi

#add a host  if  the ip hostname and host alias were passed as arguments
if [[ "$HIP" != "NULL" ]] && [[ "$HNAME" != "NULL" ]] && [[ "$HALIAS" != "NULL" ]]
then
    addHost "$HIP" "$HNAME" "$HALIAS"
#if a host file argument was passed and the file exist then add the hosts found in the file.
elif [[ "$HFILE" != "NULL" ]]
then
    if [[ -f $HFILE ]]
    then
        while read line
        do
            #Get each variables delimited by a , and remove any leading and trailing spaces
            HIP="$(echo $line | cut -d ',' -f 1 | sed -e 's/^ *//' -e 's/ *$//')"
            HNAME="$(echo $line | cut -d ',' -f 2 | sed -e 's/^ *//' -e 's/ *$//')"
            HALIAS="$(echo $line | cut -d ',' -f 3 | sed -e 's/^ *//' -e 's/ *$//')"

            addHost "$HIP" "$HNAME" "$HALIAS"
        done < $HFILE
    else
        echo "ERROR: File $HFILE does not exist."
    fi

else
    usage
    exit

fi

# if a new host was successfully added then Generate, move the configuration file and restart the poller
if [[ "$addedHost" == "TRUE" ]]
then
    echo "Generating configs ..."
    $clapi -u $centreonAdmin -p $ADMINP -a POLLERGENERATE -v 1 2>&1 | grep -v "date"
    echo "Moving configs ..."
    $clapi -u $centreonAdmin -p $ADMINP -a CFGMOVE -v 1
    echo "Restarting poller ... "
    $clapi -u $centreonAdmin -p $ADMINP -a POLLERRESTART -v 1
fi