#!/sbin/sh
#
# Copyright (c) 2011, 2013 Oracle and/or its affiliates. All rights reserved.
#

. /lib/svc/share/smf_include.sh

APACHE_HOME=/usr/apache2/2.2
APACHE_ETC_ROOT=/etc/pkg/sysrepo
APACHE_BIN=${APACHE_HOME}/bin/64

#
# Calling $APACHE_BIN/apachectl would source $APACHE_BIN/envvars, which
# in turn would source /etc/apache2/2.2/envvars, if it exists.
#
# We want to keep the system-repository service completely separate from
# the site system configuration used by svc:/network/http:apache22 avoiding
# /etc/apache2, which means we must avoid apachectl.
#
# In this method script, we call httpd directly instead, but as a result,
# we also need to include the relevant contents of $APACHE_BIN/envvars -
# setting $LD_LIBRARY_PATH as it does.
#
HTTPD=${APACHE_BIN}/httpd.worker
LD_LIBRARY_PATH=${APACHE_HOME}/lib/64:${LD_LIBRARY_PATH}
export LD_LIBRARY_PATH

getprop() {
    PROPVAL=""
    svcprop -q -p $1 ${SMF_FMRI}
    if [ $? -eq 0 ] ; then
        PROPVAL=`svcprop -p $1 ${SMF_FMRI}`
        if [ "${PROPVAL}" = "\"\"" ] ; then
            PROPVAL=""
        fi
        return
    fi
    return
}

check_failure() {
    RESULT=$1
    MESSAGE=$2
    NON_FATAL=$3
    if [ $RESULT -ne 0 ]; then
        echo $MESSAGE
	if [ -n "$NON_FATAL" ]; then
		return
	fi
	exit $SMF_EXIT_ERR_FATAL
    fi
}

run_sysrepo() {
	if [ "$http_proxy" ]; then
		SYSREPO_HTTP_PROXY="-w ${http_proxy}"
	fi
	if [ "$https_proxy" ]; then
		SYSREPO_HTTPS_PROXY="-W ${https_proxy}"
	fi

        /usr/lib/pkg.sysrepo \
               -R / \
               -c ${SYSREPO_CACHE_DIR} \
               -h ${SYSREPO_HOST} \
               -l ${SYSREPO_LOG_DIR} \
               -p ${SYSREPO_PORT} \
               -r ${SYSREPO_RUNTIME_DIR} \
               -s ${SYSREPO_CACHE_MAX} \
               -t ${SYSREPO_TEMPLATE_DIR} \
	       ${SYSREPO_HTTP_PROXY} \
	       ${SYSREPO_HTTPS_PROXY}
        check_failure $? "pkg.sysrepo: failed to create Apache configuration"
}

run_htcacheclean() {
	# if we dropped to maintenance and are in the process of clearing
	# that state,  we may have a htcacheclean processes hanging around.
	kill_htcacheclean
	if [ "${SYSREPO_CACHE_DIR}" != "None" ] && \
	    [ "${SYSREPO_CACHE_DIR}" != "memory" ]; then
               # Start a cache cleaning daemon, scanning every 2 weeks,
               # being intelligent about only running if the cache has changed,
               # limiting the cache to ${SYSREPO_CACHE_MAX} megabytes, being
               # nice about scheduling and removing empty directories if
               # necessary.
	       interval=$((60 * 24 * 14))
               /usr/apache2/2.2/bin/htcacheclean \
                       -d${interval} -i -l ${SYSREPO_CACHE_MAX}M -n \
                       -p ${SYSREPO_CACHE_DIR} \
                       -P ${SYSREPO_CACHE_DIR}/../sysrepo_htcacheclean.pid \
                       -t
               check_failure $? "htcacheclean failed to run cleanly"
       fi
}

kill_htcacheclean() {
	if [ -f ${SYSREPO_CACHE_DIR}/../sysrepo_htcacheclean.pid ]; then
                PID=$(< ${SYSREPO_CACHE_DIR}/../sysrepo_htcacheclean.pid)
                /usr/bin/kill -TERM $PID
                check_failure $? "failed to kill htcacheclean process $PID" \
		    "not_fatal"
        fi
}

getprop config/host
if [ "${PROPVAL}" != "" ] ; then
        SYSREPO_HOST=${PROPVAL}
fi

getprop config/port
if [ "${PROPVAL}" != "" ] ; then
        SYSREPO_PORT=${PROPVAL}
fi

getprop config/log_dir
if [ "${PROPVAL}" != "" ] ; then
        SYSREPO_LOG_DIR=${PROPVAL}
fi

getprop config/template_dir
if [ "${PROPVAL}" != "" ] ; then
        SYSREPO_TEMPLATE_DIR=${PROPVAL}
fi

getprop config/runtime_dir
if [ "${PROPVAL}" != "" ] ; then
        SYSREPO_RUNTIME_DIR=${PROPVAL}
fi

getprop config/cache_dir
if [ "${PROPVAL}" != "" ] ; then
        SYSREPO_CACHE_DIR=${PROPVAL}
fi

getprop config/cache_max
if [ "${PROPVAL}" != "" ] ; then
        SYSREPO_CACHE_MAX=${PROPVAL}
fi

getprop config/http_proxy
if [ "${PROPVAL}" != "" ] ; then
	http_proxy=${PROPVAL}
fi

getprop config/https_proxy
if [ "${PROPVAL}" != "" ] ; then
	https_proxy=${PROPVAL}
fi

case "$1" in
"start")
	cmd="start"
	run_sysrepo
	# drop privileges now that we've written our configuration
	/usr/bin/ppriv -s E=basic,net_privaddr $$
	run_htcacheclean
	${HTTPD} -f ${SYSREPO_RUNTIME_DIR}/sysrepo_httpd.conf \
            ${STARTUP_OPTIONS} -k ${cmd} 2>&1
 	check_failure $? "Server failed to start. Check the SMF service log or the error log at ${SYSREPO_LOG_DIR}/error_log for more information, if any."
	;;
"refresh")
	cmd="graceful"
	run_sysrepo
	# drop privileges now that we've written our configuration
	/usr/bin/ppriv -s E=basic,net_privaddr $$
	/usr/bin/pkill -USR1 -ox zoneproxyd
	kill_htcacheclean
	run_htcacheclean
	${HTTPD} -f ${SYSREPO_RUNTIME_DIR}/sysrepo_httpd.conf \
            ${STARTUP_OPTIONS} -k ${cmd} 2>&1
	check_failure $? "Server failed to refresh. Check the SMF service log or the error log at ${SYSREPO_LOG_DIR}/error_log for more information, if any."
	;;
"stop")
	cmd="stop"
	kill_htcacheclean
	${HTTPD} -f ${SYSREPO_RUNTIME_DIR}/sysrepo_httpd.conf \
            ${STARTUP_OPTIONS} -k ${cmd} 2>&1
	check_failure $? "Server failed to stop. Check the SMF service log  or the error log at ${SYSREPO_LOG_DIR}/error_log for more information, if any."
	;;
*)
	echo "Usage: $0 {start|stop|refresh}"
	exit $SMF_EXIT_ERR_CONFIG
	;;
esac

exit $SMF_EXIT_OK