#!/sbin/runscript
# Copyright 1999-2004 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# Author:  Martin Schlemmer <azarah@gentoo.org>
# Credits:  To all those I got ideas from :)
# 
# $Header: /var/cvsroot/gentoo-x86/net-dialup/ppp/files/net.ppp0,v 1.6 2004/11/01 11:54:10 dragonheart Exp $

# NB: Config is in /etc/conf.d/net.$IFACE


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

checkconfig() {

	if [ ! -x "$(which pppd)" -o ! -x "$(which chat)" ]
	then
		eerror "pppd and chat needs to be installed"
		return 1
	fi

	if [ -e "/var/run/ppp-${IFACE}.pid" -o -e "/var/run/${IFACE}.pid" ] && \
	   [ "${FUNCT}" = "start" ]
	then
		eerror "ppp0 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 | egrep 'default')" ] && 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

		if [ -z "$(/sbin/ifconfig | egrep "${IFACE}")" ]
		then
			ewarn "Interface seems to be down already"
			# We should return 0 here, else svc_stop() will not remove
			# the 'started' symlink ...
			return 0
		fi
		
#		/sbin/ifconfig ${IFACE} down
		if [ -e /var/run/ppp-${IFACE}.pid ]
		then
			kill $(egrep -v "${IFACE}" /var/run/ppp-${IFACE}.pid)

		elif [ -e /var/run/${IFACE}.pid ]
		then
			kill $(egrep -v "${IFACE}" /var/run/${IFACE}.pid)
		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 -v -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 [ -n "${INITSTRING}" ]
		then
			sed -e "/\$NUMBER/i\'OK\' \'${INITSTRING}\'"
				-e "s:\$NUMBER:${NUMBER}:" \
				${TEMPLATEDIR}/chat-default \
				>/etc/ppp/chat-${PEER}
		else
			sed -e "s:\$NUMBER:${NUMBER}:" \
				${TEMPLATEDIR}/chat-default \
				>/etc/ppp/chat-${PEER}
		fi

		# Setup the ip-scripts so long
		echo '#!/bin/sh' >/etc/ppp/ip-up
		chmod 700 /etc/ppp/ip-up
		echo '#!/bin/sh' >/etc/ppp/ip-down
		chmod 700 /etc/ppp/ip-down

		# Setup if-up and if-down
		if [ -x ${FWSCRIPT} ]
		then
			echo "${FWSCRIPT} start" >>/etc/ppp/ip-up
			echo "${FWSCRIPT} stop" >>/etc/ppp/ip-down
		fi

		if [ "${PEERDNS}" = "yes" ]
		then
			# ip-up: add the server supplied DNS entries to
			# /etc/resolv.conf
			echo "/bin/cp -f /etc/resolv.conf /etc/resolv.conf.old" \
				>>/etc/ppp/ip-up
			echo "/bin/cat /etc/ppp/resolv.conf >> /etc/resolv.conf" \
				>>/etc/ppp/ip-up
			# Change perms because it b0rked kppp
			echo "chmod 644 /etc/resolv.conf" >>/etc/ppp/ip-up
				
			# ip-down: restore original /etc/resolv.conf
			echo "/bin/mv -f /etc/resolv.conf.old /etc/resolv.conf" \
				>>/etc/ppp/ip-down
			echo "chmod 644 /etc/resolv.conf" >>/etc/ppp/ip-down 
		fi

		echo "[ -f /etc/ppp/ip-up.local ] && . /etc/ppp/ip-up.local" \
			>>/etc/ppp/ip-up
		echo "[ -f /etc/ppp/ip-down.local ] && . /etc/ppp/ip-down.local" \
			>>/etc/ppp/ip-down
	fi
}


# vim:ts=4