#!/bin/bash
#this script send getpostscript request to xcatd on MN and generate /xcatpost/mypostscript 
#which includes the glocal environment variables to run postscripts

if [ -z "$XCATDEST" ]; then
        XCATDEST=$1
fi

#compose getpostscript request
echo "<xcatrequest>
<command>getpostscript</command>
</xcatrequest>" > /tmp/req.xml



if [ -f /tmp/resp.xml ]; then 
    #remove any existing response file
    rm /tmp/resp.xml; 
fi


#communicate with xcatd on MN with getpostscript request
#the response will be saved in /tmp/resp.xml
while [ ! -f /tmp/resp.xml ] || grep error /tmp/resp.xml; do
        if [ -f /tmp/resp.xml ]; then
                timer=60
                while [ $timer -gt 0 ]; do
                        echo -en  "Retrying in $timer seconds  \r" >&2
                        sleep 1
                        timer=$(($timer-1));
                done
        fi
        #echo "                                                         " >&2
        if [ -f /etc/xcat/cert.pem -a -f /etc/xcat/certkey.pem ]; then #use client cert if available
                cat /tmp/req.xml | /usr/bin/openssl s_client -key /etc/xcat/certkey.pem -cert /etc/xcat/cert.pem -connect $XCATDEST -quiet 2> /dev/null > /tmp/resp.xml
        else
                cat /tmp/req.xml | /usr/bin/openssl s_client -connect $XCATDEST -quiet 2>/dev/null > /tmp/resp.xml
        fi
done

if [ -f /tmp/resp.xml ] && grep '<data>' /tmp/resp.xml >/dev/null 2>&1 ;then
    echo "Success to obtain mypostscript!"
else
    echo "Failed to obtain mypostscript!"
    exit 1 
fi

#parse the script from the xml-formated  resposne
cat /tmp/resp.xml | egrep  '<data>' | sed  -e 's/<[^>]*>//g'|egrep -v '^ *$'|sed -e 's/^ *//' | sed -e 's/&lt;/</g' -e 's/&gt;/>/g' -e 's/&amp;/\&/g' -e 's/&quot;/"/g' -e "s/&apos;/'/g" >  /xcatpost/mypostscript

#the script specified in the "postscripts" and "postbootscripts" are currently not supported
#will be supported if there is requrement on this
sed -i -e "/# postscripts-start-here/,$ d" /xcatpost/mypostscript

chmod 700 /xcatpost/mypostscript
rm -f /tmp/req.xml
rm -f /tmp/resp.xml
exit 0