#!/sbin/runscript
# Copyright 1999-2013 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/net-misc/openconnect/files/openconnect.init.in-r1,v 1.1 2013/06/23 12:43:56 hasufell Exp $

VPN="${RC_SVCNAME#*.}"
VPNLOG="/var/log/openconnect/${VPN}"
VPNLOGFILE="${VPNLOG}/openconnect.log"
VPNERRFILE="${VPNLOG}/openconnect.err"
VPNPID="/run/openconnect/${VPN}.pid"
VPNDIR="/etc/openconnect/${VPN}"
PREUPSCRIPT="${VPNDIR}/preup.sh"
PREDOWNSCRIPT="${VPNDIR}/predown.sh"
POSTUPSCRIPT="${VPNDIR}/postup.sh"
POSTDOWNSCRIPT="${VPNDIR}/postdown.sh"
SERVER="server_${VPN}"
PASSWORD="password_${VPN}"
VPNOPTS="vpnopts_${VPN}"

depend() {
	before netmount
}

checkconfig() {
	if [ $VPN = "openconnect" ]; then
		eerror "You cannot call openconnect directly. You must create a symbolic link to it with the vpn name:"
		echo
		eerror "ln -s /etc/init.d/openconnect /etc/init.d/openconnect.vpn0"
		echo
		eerror "And then call it instead:"
		echo
		eerror "/etc/init.d/openconnect.vpn0 start"
		return 1
	fi
}

checktuntap() {
	if [ $(uname -s) = "Linux" ] ; then
		if [ ! -e /dev/net/tun ]; then
			if ! modprobe tun ; then
				eerror "TUN/TAP support is not available in this kernel"
				return 1
			fi
		fi
		if [ -h /dev/net/tun ] && [ -c /dev/misc/net/tun ]; then
			ebegin "Detected broken /dev/net/tun symlink, fixing..."
			rm -f /dev/net/tun
			ln -s /dev/misc/net/tun /dev/net/tun
			eend $?
		fi
	fi
}

start() {
	ebegin "Starting OpenConnect: ${VPN}"

	local tmp_SERVER tmp_VPNOPTS tmp_PASSWORD
	eval tmp_SERVER="\${${SERVER}}"
	eval tmp_VPNOPTS="\${${VPNOPTS}}"
	eval tmp_PASSWORD="\${${PASSWORD}}"

	checkconfig || return 1

	checktuntap || return 1

	if [ "${tmp_SERVER}" = "vpn.server.tld" ]; then
		eend 1 "${VPN} not configured"
		return 1
	fi

	if [ ! -e "${VPNLOG}" ]; then
		mkdir -p "${VPNLOG}"
	fi

        local piddir="${VPNPID%/*}"
        if [ ! -d "$piddir" ] ; then
                mkdir -p "$piddir"
                if [ $? -ne 0 ]; then
                        eerror "Directory $piddir for pidfile does not exist and cannot be created"
                        return 1
                fi
        fi

	if [ -x "${PREUPSCRIPT}" ] ; then
		"${PREUPSCRIPT}"
	fi

	start-stop-daemon --start \
		--make-pidfile \
		--pidfile "${VPNPID}" \
		--stderr "${VPNERRFILE}" \
		--stdout "${VPNLOGFILE}" \
		--background \
		--exec /usr/sbin/openconnect -- \
			--interface="${VPN}" \
			--pid-file="${VPNPID}" \
			${tmp_VPNOPTS} \
			${tmp_SERVER} <<-E
			${tmp_PASSWORD}
			E

 	local retval=$?

 	if [ ! ${retval} -eq 0 ]; then
		eend ${retval}
		return ${retval}
 	fi

	if [ -x "${POSTUPSCRIPT}" ] ; then
		# wait until the interface is up and an ip address is set before running postup
		while true; do
			if [ -n "$(ip addr show $VPN | grep inet)" ]; then
				"${POSTUPSCRIPT}"
				break
			fi
		done
	fi

	eend $?
}

stop() {
	ebegin "Stopping OpenConnect: ${VPN}"

	checkconfig || return 1

	if [ -x "${PREDOWNSCRIPT}" ] ; then
		"${PREDOWNSCRIPT}"
	fi

	start-stop-daemon --pidfile "${VPNPID}" --stop /usr/sbin/openconnect
 	local retval=$?

 	if [ ! ${retval} -eq 0 ]; then
		eend ${retval}
 		return ${retval}
 	fi


	if [ -x "${POSTDOWNSCRIPT}" ] ; then
		"${POSTDOWNSCRIPT}"
	fi
	eend $?
}
