hostresolve.sh

[root@enterprise hostresolve]# cat hostresolve.sh
#!/bin/bash

function check_ip()
{
    # This function prints 'internal' or 'external' for a given IP address.
    # IP addresses are listed as 'internal' if they fall into the private
    # address space defined by rfc1918.
    local  ip=$1
    local  stat=1

    if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
        OIFS=$IFS
        IFS='.'
        ip=($ip)
        IFS=$OIFS
        [[ ${ip[0]} -le 255 && ${ip[1]} -le 255 \
            && ${ip[2]} -le 255 && ${ip[3]} -le 255 ]]
        stat=$?
    fi

        type=external

    if [ $stat == "0" ]; then
        if [ ${ip[0]} -eq 10 ]; then
                type=internal
        fi

        if [ ${ip[0]} -eq 192 ] && [ ${ip[1]} -eq 168 ]; then
                type=internal
        fi

        if [ ${ip[0]} -eq 172 ] && [ ${ip[1]} -gt 15 ]  && [ ${ip[1]} -lt 32 ]; then
                type=internal
        fi

    else
        type="Invalid IP"
    fi

        echo $type
}

        echo "<table border="1">"
        echo "<tr><td>Lookup Value</td><td>External IP</td><td>Internal IP</td><td>Respond to Ping</td><td>Hostname</td><td>DNS Name for Internal IP</td></tr>"

for host in $@; do
        external_ip=""
        external_name=""
        dns=""
        hostname=""
        internal_ip=""
        internal_name=""
        ping=""
        efrom="?"
        ifrom="?"

        ciscoconfig="/u01/grabcfgs/configs/comparisons/indcasa1.latest"

        #First check if it's an IP address
        if [ "$(check_ip ${host})" == "Invalid IP" ]; then
                #Look in external (Google) and internal DNS
                external_ip=$(dig @8.8.8.8 $host a +short | grep -o '[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}')
                internal_ip=$(dig @192.168.10.10 $host a +short +domain=herffjones.hj-int | grep -o '[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}')
                efrom="DNS"
                ifrom="DNS"
        elif [ "$(check_ip $host)" == "external" ]; then
                external_ip="$host"
                efrom="user entry"
        elif [ "$(check_ip $host)" == "internal" ]; then
                internal_ip="$host"
                ifrom="user entry"
        fi

        # The external IP is empty, lets look it up in the ASA
        if [ "$external_ip" == "" ]; then
                # If it's in the Cisco config, move on.
                if grep -q "$host" $ciscoconfig; then
                        # Okay, here's what this does (sorry if you're reading this)
                        # The inside grep looks for the IP address in the file, and a "name" line associated with it
                        # The one outside of that takes the name it found before, and looks for the NAT mapping
                        # The one outside of that one, takes the name it found in the nat mapping, and turns that into an IP
                        external_ip=$(grep " $(grep " $(grep " $host " $ciscoconfig | grep name | awk '{print $3}')" $ciscoconfig | grep static | awk '{print $3}')" $ciscoconfig | grep name | awk '{print $2}')
                        efrom="HQ ASA"
                fi
        fi

        # Check if we've got anything.
        if [ "$internal_ip" == "" ] && [ "$external_ip" == "" ]; then
                echo "<tr><td>$host</td><td colspan='5'>Unable to resolve host IP</td></tr>"
                continue
        fi

        external_name=$(grep -i " $external_ip " "$ciscoconfig" | grep name | awk '{print $3}')

        if [ "$external_name" == "" ] && [ "$internal_ip" == "" ] ; then
                ciscoconfig="/u01/grabcfgs/configs/comparisons/edesign_asa.latest"
                if grep -q $external_ip $ciscoconfig; then
                        internal_ip=$(grep -i " $external_ip " "$ciscoconfig" | grep static | awk '{print $4}')
                        ifrom="SW ASA"
                fi
        fi

        if [ "$external_name" != "" ]; then
                internal_name=$(grep -i " $external_name " "$ciscoconfig" | grep static | awk '{print $4}')
        fi

        if [ "$internal_name" != "" ] && [ "$internal_ip" == "" ]; then
                internal_ip=$(grep -i " $internal_name" "$ciscoconfig" | grep name | awk '{print $2}')
                ifrom="HQ ASA"
                if [ "$internal_ip" == "" ]; then
                        internal_ip=$internal_name
                        ifrom="HQ ASA"
                fi
        fi

        if [ "$internal_ip" == "" ]; then
                if grep -q $external_ip /u01/grabcfgs/configs/comparisons/hj-bigip1.clean; then
                        internal_ip=$external_ip
                        ifrom="HQ F5"
                fi
        fi

        if [ "$external_ip" == "" ]; then
                external_ip="None"
        fi

        if [ "$internal_ip" == "" ]; then
                internal_ip="None"
        fi

        # Reverse DNS Entries
        dns=$(grep -h -e "$external_ip$" -e "${internal_ip:-"null"}$" /u01/grabcfgs/configs/comparisons/dns_*.latest 2>/dev/null | awk '{print $1}')

        if [ "$internal_ip" != "" ]; then
                hostname=$(grep -H -e "$internal_ip\$" -e "$internal_ip " hostips/* 2>/dev/null | cut -d "/" -f 2 | cut -d ":" -f 1)

                ping=$(ping -c 1 -W 1 ${internal_ip} >/dev/null 2>&1 && echo "Yes" || echo "No")

                instanceconfig=$(ssh inxx34.herffjones.hj-int /x01/deploy/instanceinfo.sh ${host})
                if [ "$hostname" == "" ]; then
                        lbfiles=$(grep -H "$internal_ip" /u01/grabcfgs/configs/comparisons/*lb*.clean /u01/grabcfgs/configs/comparisons/hj-bigip1.clean 2>/dev/null | cut -d ":" -f 1 | sort -u)

                        for file in $lbfiles; do
                                config=$(./print_bigipconf "$file" "$internal_ip")

                                for line in $config; do
                                        item=$(echo $line | cut -d ":" -f 1)
                                        variable=$(echo $line | cut -d ":" -f 2-)

                                        nodeip=""
                                        port=""
                                        nstatus=""
                                        servername=""

                                        if [ "$item" == "ForcedSSL" ]; then
                                                ssl="$variable"
                                        fi

                                        #if [ "$item" == "PoolName" ]; then
                                                #hostname="<b>$variable</b><br />"
                                        #fi
                                        #head="<table border=1><tr><td>Server</td><td>IP</td><td>Port</td><td>Status</td></tr>"
                                        head="<table border=1><tr><td>Server</td><td>IP</td><td>Port</td><td>Status</td><td>Available</td><td>Priority</td></tr>"

                                        if [ "$item" == "Member" ]; then
                                                nodeip=$(echo $line | cut -d ":" -f 2)
                                                port=$(echo $line | cut -d ":" -f 3)
                                                nstatus=$(echo $line | cut -d ":" -f 4)
                                                servername=$(grep -H -e "$nodeip\$" -e "$nodeip " hostips/* 2>/dev/null | cut -d "/" -f 2 | cut -d ":" -f 1)
                                                servername="<a href=hostinfo.php?hostname=${servername}>${servername}</a>"
                                                avail=$(echo $line | cut -d ":" -f 5)
                                                pri=$(echo $line | cut -d ":" -f 6)
                                                #body="$body<tr><td>$servername</td><td>$nodeip</td><td>$port</td><td>$nstatus</td></tr>"
                                                IFSBAK=$IFS
                                                for line in $instanceconfig; do
                                                        if echo "$line" | grep -q $nodeip; then
                                                                extra=""
                                                                if [ "$(echo $line | cut -d '|' -f 4)" == "coldfusion" ]; then
                                                                        url="http://$(echo $line | cut -d '|' -f 2).herffjones.hj-int"
                                                                        extra="<tr><td  align=\"center\"><a href="http://$(echo $line | cut -d '|' -f 3).herffjones.hj-int/CFIDE/administrator/">CFIDE Administrator</a></td></tr>"
                                                                else
                                                                        url="http://$(echo $line | cut -d '|' -f 2).herffjones.hj-int"
                                                                fi
                                                                nodeip="<table border=1><tr><td align=\"center\">${nodeip}</td></tr><tr><td  align=\"center\"><a href="$url">$(echo $line | cut -d '|' -f 2)</a></td></tr>${extra}</tr></table>"
                                                                break
                                                        fi
                                                done
                                                IFS=$IFSBAK

                                                body="$body<tr><td>$servername</td><td>$nodeip</td><td>$port</td><td><a href="${url}/health">$nstatus</a></td><td>$avail</td><td>$pri</td></tr>"
                                        fi
                                done

                                        if [ "$config" == "" ]; then
                                                head="<table border=1>"
                                                body="<tr><td align=\"center\" colspan=\"6\">ERROR: No Pool Members Configured</td></tr>"
                                                ssl="unknown"
                                        fi

                                        hostname="${head}${body}<tr><td align=\"center\" colspan=\"3\">Forced SSL</td><td align=\"center\" colspan=\"3\">${ssl}</td></tr></table>"
                        break
                        done
                else
                        hostname="<a href=hostinfo.php?hostname=${hostname}>${hostname}</a>"
                fi
        fi

        if [ "$hostname" == "</table>" ]; then
                hostname=""
        fi

        if [ "$(check_ip $external_ip)" != "external" ]; then
                   external_ip="None"
        fi


        echo -e "<tr $([ ${ping} != "Yes" ] && echo "" || [ "x${hostname}" == "x" ] && echo "style=\"background-color:#FFFF99\"")><td><b>$host</b></td><td align=center>$external_ip (${efrom})</td><td>${internal_ip:-"UNKNOWN"} (${ifrom})</td><td>${ping:-"UNKNOWN"}</td><td>${hostname:-"UNKNOWN"}</td><td>${dns:-"UNKNOWN"}</td></tr>\n"

        hostname=""
        head=""
        body=""

done

        echo "</table>"