#!/bin/bash

#
# $Id: installglassfish.sh 189 2011-12-05 23:33:06Z glenn $
#

INSTALL_LOC="/usr/local"
INSTALL_LOG="/root/glassfish_install.log"
FILE="glassfish-"
VERSION="3.1"
EXT="zip"
FILE_SOURCE="http://download.java.net/glassfish/3.1/release"
TIMESTAMP=`date +%H%M%d%m%G`

ERRMSG=""
NOPROMPT="N"

###
# Function: echolog
# view std out and append to log
#
function echolog() {
  echo -e $* | tee -a $INSTALL_LOG
}

###
# Function: usage
# helpful message where its needed
#
function usage {
  echo "Usage: $0  [ --help|--usage|--noprompt]" >&2
}

###
# Function: parsecommandline
# Take parameters as given on command line and set those up so we can do
# cooler stuff, or complain that nothing will work. Set some reasonable
# defaults so we dont have to type so much.
#
function parsecommandline {
    while [ -n "$1" ]; do
        PARAM=$1
        case "$1" in
          --help | --usage)
            usage
            exit 0;
          ;;
          --noprompt)
            NOPROMPT="Y"
          ;;
          *)
            ERRORMSG="unknown parameter found"
            if [[ -n "$1" ]]; then
                ERRORMSG="$ERRORMSG '$1'"
            fi
            return 1
          ;;
        esac
        shift
    done

    if [[ -n $ERRMSG ]]; then
        usage
        echolog "Error: $ERRORMSG" >&2
        echo
        exit 1
    fi
}

##
# Function: installpackage
# take what we know and install our package! :D
#
function installpackage {
    # go to location
    cd $INSTALL_LOC

    # sanity check
    if [ -e $INSTALL_LOC/glassfish ]; then
      if ps aux | grep -q '[j]ava.*glassfish' && [ -e /etc/init.d/glassfish ]; then
	echolog "NOTICE: Found a running instance of glassfish, attemping to shut down with initscript"
	/etc/init.d/glassfish stop
      fi
      if [ "$NOPROMPT" == "Y" ] || [ "$NOPROMPT" == "y" ]; then
        mv $INSTALL_LOC/glassfish $INSTALL_LOC/glassfish.old.$TIMESTAMP
        echolog "NOTICE: moved $INSTALL_LOC/glassfish to $INSTALL_LOC/glassfish.old.$TIMESTAMP"
      else
        echolog "$INSTALL_LOC/glassfish exists, should I move it? [Y/N]"
        read moveglassfish
        if [ "$moveglassfish" == "Y" ] || [ "$moveglassfish" == "y" ]; then
          mv $INSTALL_LOC/glassfish $INSTALL_LOC/glassfish.old.$TIMESTAMP
          echolog "NOTICE: moved $INSTALL_LOC/glassfish to $INSTALL_LOC/glassfish.old.$TIMESTAMP"
        else
          exit 0
        fi
      fi
    fi
    
    # get glassfish 
    if [ -e $FILE ]; then
        echolog "NOTICE: Skipping the glassfish download"
    else
        echolog "NOTICE: Getting $FILE_SOURCE/$FILE"
        wget "$FILE_SOURCE/$FILE" -O $FILE -a $INSTALL_LOG
        if [ $? -ne 0 ] ; then
            echolog "ERROR: Failed getting $FILE_SOURCE/$FILE"
            return 1
        fi
    fi

    # unpack...
    if [[ $EXT == "jar" ]]; then
       echolog "NOTICE: Unacking $FILE"
       java -Xmx256m -jar $FILE  >> $INSTALL_LOG 2>&1
    elif [[ $EXT == "tar.gz" ]]; then
       echolog "NOTICE: Unacking $FILE"
       tar -xzf $FILE  >> $INSTALL_LOG 2>&1
    elif [[ $EXT == "tar.bz2" ]]; then
       echolog "NOTICE: Unacking $FILE"
       tar -xjf $FILE  >> $INSTALL_LOG 2>&1
    elif [[ $EXT == "zip" ]]; then
       echolog "NOTICE: Unacking $FILE"
       unzip $FILE  >> $INSTALL_LOG 2>&1
    else
        echolog "NOTICE: Unrecognised package format, giving up"
        exit 1;
    fi

    if [ -e $INSTALL_LOC/glassfish ]; then
      mv $INSTALL_LOC/glassfish $INSTALL_LOC/glassfish.old.$TIMESTAMP
    fi
    mv $INSTALL_LOC/glassfish3 $INSTALL_LOC/glassfish

    # add glassfish user
    echolog "NOTICE: Adding glassfish user"
    if [ -e /etc/debian_version ]; then
      adduser --shell /sbin/nologin --home /usr/local/glassfish --system glassfish >> $INSTALL_LOG 2>&1
      addgroup --system glassfish >> $INSTALL_LOG 2>&1
      adduser glassfish glassfish >> $INSTALL_LOG 2>&1
    else
      adduser -s /sbin/nologin -d /usr/local/glassfish glassfish >> $INSTALL_LOG 2>&1
    fi

    # set ownship of glassfish install location
    echolog "NOTICE: Setting ownership of $INSTALL_LOC/glassfish"
    chown -R glassfish:glassfish $INSTALL_LOC/glassfish >> $INSTALL_LOG 2>&1
    chown -R glassfish:glassfish $INSTALL_LOC/glassfish/* >> $INSTALL_LOG 2>&1
}

###
# Function setuppackage
# runs the setup of glassfish
#
function setuppackage {
    # set java location
    sed -i 's/JAVA=java/JAVA=\/usr\/java\/jdk\/bin\/java/' $INSTALL_LOC/glassfish/bin/asadmin
    # bind glassfish to localhost
    sed -i 's/0.0.0.0/127.0.0.1/' $INSTALL_LOC/glassfish/glassfish/domains/domain1/config/domain.xml
    sed -i '/<network-listener port="8080" protocol="http-listener-1"/<network-listener port="8080" protocol="http-listener-1" address="127.0.0.1"/' $INSTALL_LOC/glassfish/glassfish/domains/domain1/config/domain.xml
    sed -i 's/<network-listener port="8181" protocol="http-listener-2"/<network-listener port="8181" protocol="http-listener-2" address="127.0.0.1"/' $INSTALL_LOC/glassfish/glassfish/domains/domain1/config/domain.xml
    sed -i 's/<network-listener port="4848" protocol="admin-listener"/<network-listener port="4848" protocol="admin-listener" address="127.0.0.1"/' $INSTALL_LOC/glassfish/glassfish/domains/domain1/config/domain.xml
}

# get set up
parsecommandline $*

# make sure we have unzip for later
apt-get -y install unzip zip >> $INSTALL_LOG 2>&1

# do the install
FILE="$FILE$VERSION.$EXT"
installpackage

# do the setup
echolog "NOTICE: Running setup of glassfish"
setuppackage >> $INSTALL_LOG 2>&1

# install init script
echolog "NOTICE: installing glassfish init script"

echo <<INITSCRIPT >/etc/init.d/glassfish '#!/bin/bash

#
# Startup script for Glassfish
#
# chkconfig: 345 94 16
# description: Glassfish
#

GLASSFISHHOME=/usr/local/glassfish
DOMAIN="domain1"

export JAVA_HOME=/usr/java/jdk

case "$1" in
  start)
    su - glassfish -s /bin/sh -c "$GLASSFISHHOME/bin/asadmin start-domain $DOMAIN"
  ;;
  stop)
    su - glassfish -s /bin/sh -c "$GLASSFISHHOME/bin/asadmin stop-domain $DOMAIN"
  ;;
  restart)
    su - glassfish -s /bin/sh -c "$GLASSFISHHOME/bin/asadmin stop-domain $DOMAIN"
    su - glassfish -s /bin/sh -c "$GLASSFISHHOME/bin/asadmin start-domain $DOMAIN"
  ;;
  *)
    echo $"usage: $0 {start|stop|restart}"
    exit 1
esac
'
INITSCRIPT

chmod +x /etc/init.d/glassfish

# start glassfish
echolog "NOTICE: starting glassfish"
/etc/init.d/glassfish start >> $INSTALL_LOG 2>&1

# clean up
echolog "NOTICE: cleaning up after installation"
rm $INSTALL_LOC/$FILE

# output user information
echolog "Glassfish is now installed, access the admin console at http://127.0.0.1:4848/"
echolog "Please set an admin password via the admin console by going to"
echolog "\"Enterprise Server\" then \"Administrator Password\"."