ampache 3.6~alpha1-0ubuntu6 / postinst

#!/bin/sh
# postinst script for Ampache

set -e

#set our variables, placed them in conditional if statements so if apache2 is
#being used lighttpd vars are not created and vice versa.
log="/var/log/ampache"

if [ -e /etc/ampache ]; then
	AMP="/etc/ampache/ampache.conf"
	ELCAMP="/etc/ampache/lighttpd_ampache.conf"
	MAMP="/etc/ampache/mythbuntu.ampache.conf"
	ea=$(ls /etc/ampache)
fi

if [ -e /etc/apache2 ]; then
	APE="/etc/apache2/conf.d"
	APES="/etc/apache2/sites-enabled/mythweb.conf"
	APSA="/etc/apache2/sites-available"
	confd=$(ls $APE)
	sa=$(ls /etc/apache2/sites-available)
	se=$(ls /etc/apache2/sites-enabled)
	default_stock="b38ca5a963f52930ede3f4e1958f3275  /etc/apache2/sites-available/default"
	AA="b17b1eae00bd0ee2d716394ee28bbc62  /etc/apache2/sites-enabled/ApacheAmpache"
fi

if [ -e /etc/lighttpd ]; then
	ELCA="/etc/lighttpd/conf-available"
	EM="/usr/sbin/lighty-enable-mod"
fi

#read in the debconf module
. /usr/share/debconf/confmodule

#apache2 sanity checks
sc010_check() {
	#check to see if ampache.conf is present and enabled.
	sc010=1
	if [ "$ea" = "ampache.conf" ]; then
		if [ "$confd" = "ampache.conf" ]; then
				printf "ampache.conf is present and enabled.\n"
				sc010=enabled
		fi
	fi
}

sc101_check() {
	#check to see of ApacheAmpache is enabled
	sc101=1
	if [ "$se" = "ApacheAmpache" ]; then
		AA_user=$(md5sum /etc/apache2/sites-enabled/ApacheAmpache)
		if [ "$AA_user" = "$AA" ]; then
			printf "ApacheAmpache is enabled ampache vhost already exists.\n"
			sc101=enabled
		fi
	fi
}

sc102_check() {
	#check to see if ampvhadd has been created and is being used.
	sc102=1
	if [ "$se" = "ampvhadd" ]; then
		sc102=enabled
	fi
}

sc103_check() {
	#check to see if 000-default is enabled
	sc103=1
	if [ "$se" = "000-default" ]; then
		sc103=enabled
	fi
}

sc104_check() {
	#check to see if 000-default has been modified
	sc104=1
	if [ "$sc103" = "enabled" ]; then
		default_users=$(md5sum /etc/apache2/sites-available/default)
		if [ "$default_stock" = "$default_users" ]; then
			sc104=equal
		fi
	fi
}

apache_install() {
	#do our sanity checks and install ampache accordingly
	sc010_check
	sc101_check
	sc102_check
	sc103_check
	sc104_check
	printf "Our vars are:\n"
	printf "sc010 is $sc010\n"
	printf "sc101 is $sc101\n"
	printf "sc102 is $sc102\n"
	printf "sc103 is $sc103\n"
	printf "sc104 is $sc104\n"
	if [ "$sc010" = "enabled" ]; then
		printf "ampache.conf is enabled let's use it.\n"
		return 0
	elif [ "$sc010" = "1" ] && [ "$sc101" = "enabled" ]; then
		printf "ApacheAmpache is enabled ampache vhost already exists.\n"
		return 0
	elif [ "$sc010" = "1" ] && [ "$sc101" = "1" ] && [ "$sc102" = "enabled" ]; then
		printf "ampvhadd is enabled ampache vhost already exists.\n"
		return 0
	elif [ "$sc010" = "1" ] && [ "$sc101" = "1" ] && [ "$sc102" = "1" ] && \
		[ "$sc103" = "enabled" ] && [ "$sc104" = "equal" ]; then
		default_users=$(md5sum /etc/apache2/sites-available/default)
		printf "enabling ApacheAmpache.\n"
		if [ "$default_stock" = "$default_users" ]; then
			a2dissite default
			a2ensite ApacheAmpache
			rm -f $ELCAMP
			rm -f $MAMP
		fi
	elif [ "$sc010" = "1" ] && [ "$sc101" = "1" ] && [ "$sc102" = "1" ] && \
		[ "$sc103" = "enabled" ] && ["$sc104" = "1" ]; then
		printf "need to create ampvhadd\n"
		cp -p $APSA/default $APSA/default2
		if [ -f $APSA/default2 ]; then
			sed -e s'/<\/VirtualHost>//' $APSA/default2 > $APSA/default3
			cat $APSA/default3 /usr/share/ampache/vhost > $APSA/ampvhadd
			if [ -e $APSA/ampvhadd ]; then
				a2dissite default
				a2ensite ampvhadd
				rm -f $APSA/ApacheAmpache
				rm -f $APSA/default2
				rm -f $APSA/default3
			fi
		fi
	else
		printf "Something weird has happened,  unable to create ampache vhost.\n"
	fi
}

#Configure the lighttpd webserver.
lighttpd_install() {
    if [ ! -f $ELCA/50-ampache.conf ] ; then
        if [ ! -x $EM ] ; then
            printf "Lighttpd not installed, skipping.\n"
        else
            ln -s $ELCAMP $ELCA/50-ampache.conf
            $EM ampache
            rm -f $AMP
			rm -f $MAMP
        fi
    fi
}

#Configure the apache2 webserver on Mythbuntu.
mythbuntu_apache_install() {
    if [ -e $APE/mythbuntu.ampache.conf ]; then
		printf "mythbuntu symlink already exists"
	else
		ln -s $MAMP $APE/mythbuntu.ampache.conf
        rm -f $ELCAMP
        rm -f $AMP
    fi
}

if [ "$1" = "configure" ] || [ "1" = "upgrade" ]; then
	#find out what type of webserver we have
	db_get ampache/webserver_type || true
	webservers="$RET"
	#ask the user if we need to restart/reload the webserver
	db_get ampache/restart_webserver || true
	if [ "$RET" = "false" ]; then
        #if false install everything and DO NOT reload the webserver config
		if [ "$webservers" = "apache2" ]; then
			if [ -d /var/www/mythweb ] && [ -f $APES ]; then
				mythbuntu_apache_install
			else
				apache_install
			fi
		elif [ "$webservers" = "lighttpd" ] ; then
			lighttpd_install
		else
			printf "unable to configure ampache.\n"
		fi
		if [ -d $log ]; then
			chmod 755 $log
			chown www-data:www-data $log
		fi
		#exit gracefully and let the user restart the webserver
		exit 0
	elif [ "$RET" = "true" ]; then
        #if true install every thing AND reload the webserver config
		if [ "$webservers" = "apache2" ]; then
			if [ -d /var/www/mythweb ] && [ -f $APES ]; then
				mythbuntu_apache_install
			else
				apache_install
			fi
		elif [ "$webservers" = "lighttpd" ] ; then
				lighttpd_install
		else
			printf "unable to configure and reload $webservers config file\n"
		fi
		#reload the webserver config
		if [ -x /usr/sbin/invoke-rc.d ]; then
			invoke-rc.d $webservers reload 3>/dev/null || true
		else
			/etc/init.d/$webservers reload 3>/dev/null || true
		fi
		#set log file owner and permissions
		if [ -d $log ]; then
			chmod 755 $log
			chown www-data:www-data $log
		fi
	else
		printf "Something weird has happened, unable to configure ampache.\n"
	fi
fi



exit 0