#!/bin/bash
# Copyright 1999-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

eerror() {
	echo "ERROR: ${@}" >&2
}

RC_SVCNAME="${2:-tomcat@SLOT@}"
RC_SVCBASE="/@GENTOO_PORTAGE_EPREFIX@etc/conf.d/"
RC_SVCCONF="${RC_SVCBASE}${RC_SVCNAME}"

if [ ! -e "${RC_SVCCONF}" ]; then
	# Try alternate (preferred) service name "tomcat@SLOT@-NAME" before giving up
	RC_SVCNAME="tomcat@SLOT@-${RC_SVCNAME/tomcat@SLOT@-/}"
	RC_SVCCONF="${RC_SVCBASE}${RC_SVCNAME}"

	if [ ! -e "${RC_SVCCONF}" ]; then
		eerror "Invalid instance name \"${RC_SVCNAME}\""
		eerror "Make sure the instance name is correct and the configuration file"
		eerror "in \"${RC_SVCCONF}\" exists and is readable by the tomcat user"
		exit 1
	fi
fi

source ${RC_SVCCONF}

if [ $? -ne 0 ]; then
	eerror "Environment configuration file \"${RC_SVCCONF}\" contains errors"
	exit 1
fi

: ${CATALINA_HOME:=/@GENTOO_PORTAGE_EPREFIX@opt/tomcat@SLOT@}
: ${CATALINA_BASE:=/@GENTOO_PORTAGE_EPREFIX@var/lib/${RC_SVCNAME}}
: ${CATALINA_TMPDIR:=/@GENTOO_PORTAGE_EPREFIX@var/tmp/${RC_SVCNAME}}

: ${TOMCAT_START:=start}

: ${JPDA_TRANSPORT:="dt_socket"}
: ${JPDA_ADDRESS:="8000"}
: ${JPDA_OPTS="-Xdebug -Xrunjdwp:transport=${JPDA_TRANSPORT},address=${JPDA_ADDRESS},server=y,suspend=n"}

JAVA_HOME=`java-config ${TOMCAT_JVM:+--select-vm ${TOMCAT_JVM}} --jre-home`

CLASSPATH=`java-config --classpath tomcat-bin-@SLOT@${TOMCAT_EXTRA_JARS:+,${TOMCAT_EXTRA_JARS}}`
CLASSPATH="${CLASSPATH}${TOMCAT_EXTRA_CLASSPATH:+:${TOMCAT_EXTRA_CLASSPATH}}"

start()	{
	if [ ! -e "${CATALINA_BASE}" ]; then
		eerror "CATALINA_BASE does not exist. Unable to start tomcat."
		exit 1
	fi
	if [ ! -e "${CATALINA_HOME}" ]; then
		eerror "CATALINA_HOME does not exist. Unable to start tomcat."
		exit 1
	fi
	if [ ! -e "${CATALINA_TMPDIR}" ]; then
		eerror "CATALINA_TMPDIR does not exist. Unable to start tomcat."
		eerror "Please see /@GENTOO_PORTAGE_EPREFIX@etc/conf.d/${RC_SVCNAME} for more information."
		exit 1
	fi
	if [ $(id -u) -eq 0 ]; then
		eerror "This service should not be started as root"
		exit 1
	fi

	cmd=java args=
	if [ "${TOMCAT_START}" = "debug" ] || [ "${TOMCAT_START}" = "-security debug" ] ; then
		cmd=jdb
		args="${args} -sourcepath ${CATALINA_HOME}/../../jakarta-tomcat-catalina/catalina/src/share"
	fi
	if [ "${TOMCAT_START}" = "-security debug" ] || [ "${TOMCAT_START}" = "-security start" ]; then
		args="${args} -Djava.security.manager"
		args="${args} -Djava.security.policy=${CATALINA_BASE}/conf/catalina.policy"
	fi
	if [ "${TOMCAT_START}" = "jpda start" ] ; then
		args="${args} ${JPDA_OPTS}"
	fi
	if [ -r "${CATALINA_HOME}"/bin/tomcat-juli.jar ]; then
		args="${args} -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager \
		-Djava.util.logging.config.file=${CATALINA_BASE}/conf/logging.properties"
	fi

	cd "${CATALINA_BASE}"

	exec ${JAVA_HOME}/bin/${cmd} \
		${JAVA_OPTS} \
		${args} \
		-Dcatalina.base="${CATALINA_BASE}" \
		-Dcatalina.home="${CATALINA_HOME}" \
		-Djava.io.tmpdir="${CATALINA_TMPDIR}" \
		-classpath "${CLASSPATH}" \
		org.apache.catalina.startup.Bootstrap \
		${CATALINA_OPTS} \
		${TOMCAT_START}
}

stop()	{
	exec ${JAVA_HOME}/bin/java \
		${JAVA_OPTS} \
		-Dcatalina.base="${CATALINA_BASE}" \
		-Dcatalina.home="${CATALINA_HOME}" \
		-Djava.io.tmpdir="${CATALINA_TMPDIR}" \
		-classpath "${CLASSPATH}" \
		org.apache.catalina.startup.Bootstrap \
		${CATALINA_OPTS} \
		stop
	ret=$?

	# Ignore sigterm
	[[ $ret -eq 143 ]] && \
		ret=0

	return $ret
}

version() {
	exec ${JAVA_HOME}/bin/java \
		${JAVA_OPTS} \
		-Dcatalina.base="${CATALINA_BASE}" \
		-Dcatalina.home="${CATALINA_HOME}" \
		-Djava.io.tmpdir="${CATALINA_TMPDIR}" \
		-classpath "${CLASSPATH}" \
		org.apache.catalina.util.ServerInfo
}


case "$1" in
start)
	start
	;;
stop)
	stop
	;;
restart)
	stop
	start
	;;
version)
	version
	;;
*)
	echo "Usage: $0 {start|stop|restart|version|getenv} [instance name]" >&2
	exit 1
esac