debian/cas.postinst

#!/bin/bash

set -e

if [ "$1" = configure ]; then

    # Move away the default root web app installed by Debian which provides a stub index page
    if [ -e /var/lib/tomcat9/webapps/ROOT/index.html ]; then
        md5sum_root="$(md5sum /var/lib/tomcat9/webapps/ROOT/index.html | awk '{print $1}')"
        if [ "$md5sum_root" = "90f2cbc7fd28e7ed99f3254ab0f9a9ed" ] || # tomcat9
	       [ "$md5sum_root" = "fa92dbfaeafff57df172fbe91529d46a" ]; then   # tomcat8
	    mv /var/lib/tomcat9/webapps/ROOT/ /var/lib/tomcat9/unused-webapps/debian-default-root
	fi
    fi

    # Ensure that the cas WAR always gets extracted to a fresh deployment directory
    if [ -e /var/lib/tomcat9/webapps/ROOT ]; then
	mv /var/lib/tomcat9/webapps/ROOT/ /var/lib/tomcat9/unused-webapps/cas-$(date +%F-%H-%M)
    fi

    # Extract the CAS war
    mkdir -p /var/lib/tomcat9/webapps/ROOT/
    cd /var/lib/tomcat9/webapps/ROOT/
    jar -xvf /var/lib/tomcat9/webapps/ROOT.war
    chown -R tomcat:tomcat /var/lib/tomcat9/webapps/ROOT/

    chown -R tomcat:tomcat /etc/cas
    chown -R tomcat:tomcat /var/log/cas

    systemctl --system daemon-reload >/dev/null || true
    systemctl restart tomcat9
fi

#DEBHELPER#