#!/sbin/runscript
# Copyright 1999-2004 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/net-dialup/ppp/files/2.4.2/net.ppp0,v 1.2 2004/07/14 23:18:07 agriffis Exp $

# Misc internal variables
CMD_LINE=""
FUNCT="$2"
TEMPLATEDIR="/etc/ppp"

checkconfig() {

	if [ -e "/var/run/ppp-${IFACE}.pid" -o -e "/var/run/${IFACE}.pid" ] && \
	   [ "${FUNCT}" = "start" ]
	then
		eerror "${IFACE} is already up"
		return 1
	fi
}

start() {

	checkconfig || return 1

	setup_cmd_line
	setup_cfg_files

	ebegin "Bringing ${IFACE} up"
	if [ -x "$(which pppd)" ]
	then

		if [ "${DEFROUTE}" = "yes" ]
		then
			[ -n "$(/sbin/route -n | egrep '0.0.0.0')" ] && route del default
		fi
		# Added hide-password here, can't be too sure...
		/usr/sbin/pppd ${CMD_LINE} ${MODEMPORT} ${LINESPEED} \
			ipparam ${IFACE} linkname ${IFACE} call ${PEER} \
			noauth ${PPPOPTIONS} hide-password
	fi
	eend
}

stop() {

	checkconfig || return 1

	ebegin "Bringing ${IFACE} down"
	if [ -x "$(which ifconfig)" ]
	then

		# Obtain interface name from pid file (IFACE is actually linkname)
		if [ -e /var/run/ppp-${IFACE}.pid ]
		then
			IFNAME=$(egrep "ppp" /var/run/ppp-${IFACE}.pid)
		fi
		if [ -z "${IFNAME}" ]
		then
			IFNAME=${IFACE}
		fi

		if [ -z "$(/sbin/ifconfig | egrep "${IFNAME}")" ]
		then
			# Link is not up but pppd may be running
			ewarn "Interface seems to be down already"
		fi
		
		if [ -e /var/run/ppp-${IFACE}.pid ]
		then
			PID=$(egrep -v "${IFNAME}" /var/run/ppp-${IFACE}.pid)
		elif [ -e /var/run/${IFACE}.pid ]
		then
			PID=$(egrep -v "${IFNAME}" /var/run/${IFACE}.pid)
		fi

		if [ -n "${PID}" ]
		then
			kill ${PID}
			sleep 1

			# Try to kill pppd repeatedly (sometimes, (e.g. if connection
			# is not established) pppd ignores SIGTERM for a while)
			PID_TMP=`pstree -p ${PID}`
			PID_TMP=`echo ${PID_TMP} | sed -e 's:^.*pppd(\|).*::g'`
			COUNT=0
			while [ -n "${PID_TMP}" ] && [ ${COUNT} -lt 10 ]
			do
				kill ${PID}
				sleep 1
				PID_TMP=`pstree -p ${PID}`
				PID_TMP=`echo ${PID_TMP} | sed -e 's:^.*pppd(\|).*::g'`
				let COUNT++
			done
		fi

		if [ -n "${PID_TMP}" ]
		then
			eend 1 "Error stopping pppd"
		fi

	fi
	eend
}

setup_cmd_line() {

	CMD_LINE="lock"
	
	if [ "${DEBUG}" = "yes" ]
	then
		CMD_LINE="${CMD_LINE} debug"
	fi

	if [ "${PERSIST}" = "yes" ]
	then
		CMD_LINE="${CMD_LINE} persist holdoff ${RETRYTIMEOUT}"
	fi

	if [ "${DEFROUTE}" = "yes" ]
	then
		CMD_LINE="${CMD_LINE} defaultroute"
	fi

	if [ "${HARDFLOWCTL}" = "yes" ]
	then
		CMD_LINE="${CMD_LINE} modem crtscts"
	fi

	if [ "${ESCAPECHARS}" = "yes" ]
	then
		CMD_LINE="${CMD_LINE} asyncmap 00000000"
	fi

	if [ "${PEERDNS}" = "yes" ]
	then
		CMD_LINE="${CMD_LINE} usepeerdns"
	fi

	if [ -n "${IPADDR}${REMIP}" ]
	then
		CMD_LINE="${CMD_LINE} ${IPADDR}:${REMIP}"
	fi

	if [ -n "${NETMASK}" ]
	then
		CMD_LINE="${CMD_LINE} netmask ${NETMASK}"
	fi

	if [ -n "${MRU}" ]
	then
		CMD_LINE="${CMD_LINE} mru ${MRU}"
	fi
	
	if [ -n "${MTU}" ]
	then
		CMD_LINE="${CMD_LINE} mtu ${MTU}"
	fi
	    
	if [ -n "${USERNAME}" ]
	then
		CMD_LINE="${CMD_LINE} user ${USERNAME} remotename ${PEER}"
	fi

	if [ "${ONDEMAND}" = "yes" ]
	then
		CMD_LINE="${CMD_LINE} demand ktune idle ${IDLETIMEOUT}"
		CMD_LINE="${CMD_LINE} holdoff ${RETRYTIMEOUT}"
	fi
}

setup_cfg_files() {

	if [ "${AUTOCFGFILES}" = "yes" ]
	then
		if [ -n "${NUMBER}" ]
		then
			# Setup the peers file
			echo "connect '/usr/sbin/chat -f /etc/ppp/chat-${PEER}'" \
				>/etc/ppp/peers/${PEER}
		fi

		# Setup the secrets files
		echo "\"${USERNAME}\" ${PEER} \"${PASSWORD}\"" >/etc/ppp/chap-secrets
		chmod 600 /etc/ppp/chap-secrets
		echo "\"${USERNAME}\" ${PEER} \"${PASSWORD}\"" >/etc/ppp/pap-secrets
		chmod 600 /etc/ppp/pap-secrets

		# Setup the chat file
		if [ "${AUTOCHATSCRIPT}" = "yes" ]
		then
			if [ -n "${INITSTRING}" ]
			then
				if [ -n "${NUMBER}" ]; then
					sed -e "12i\\'OK\' \'${INITSTRING}\'" \
						-e "s:\$NUMBER:${NUMBER}:" \
						${TEMPLATEDIR}/chat-default \
						>/etc/ppp/chat-${PEER}
				else
					sed -e "12i\\'OK\' \'${INITSTRING}\'" \
						${TEMPLATEDIR}/chat-default \
						>/etc/ppp/chat-${PEER}
				fi
			else
				if [ -n "${NUMBER}" ]; then
					sed -e "s:\$NUMBER:${NUMBER}:" \
						${TEMPLATEDIR}/chat-default \
						>/etc/ppp/chat-${PEER}
				fi
			fi
		fi
	fi
}

# vim:ts=4