path: root/net-dialup/ppp/files/2.4.1-r6/net.ppp0

#!/sbin/runscript
# Copyright 1999-2000 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License, v2 or later
# Author  Martin Schlemmer <azarah@gentoo.org>
# Credits  To all those I got ideas from :)
# $Header: /var/cvsroot/gentoo-x86/net-dialup/ppp/files/2.4.1-r6/net.ppp0,v 1.3 2001/11/11 20:13:44 azarah Exp $

PEER="isp"			# Define peer (aka ISP)
DEBUG="no"			# Turn on debugging
PERSIST="no"			# Redial after being dropped
ONDEMAND="no"			# Only bring the interface up on demand?
MODEMPORT="/dev/ttyS0"		# TTY device modem is connected to
LINESPEED="115200"		# Speed pppd should try to connect at
INITSTRING="AT&S2=255"		# Extra init string for the modem
DEFROUTE="yes"			# Must pppd set the default route?
HARDFLOWCTL="yes"		# Use hardware flow control?
ESCAPECHARS="yes"		# Use escape caracters ?
PPPOPTIONS=""			# Extra options for pppd
USERNAME="user"			# The PAP/CHAP username
PASSWORD="passwd"		# Your password/secret.  Ugly I know, but i
				# will work on something more secure later
				# on.  700 permission on /etc/init.d/net.ppp0
				# should be enouth for now.
NUMBER="9180000"		# The telephone number of your ISP
REMIP=""			# The ip of the remote box if it should be set
NETMASK=""			# Netmask
IPADDR=""			# Our IP if we have a static one
MRU="768"			# Sets the MRU
MTU="768"			# Sets the MTU
RETRYTIMEOUT="60"		# Retry timeout for when ONDEMAND="yes" or
				# PERSIST="yes"
IDLETIMEOUT="600"		# Idle timeout for when ONDEMAND="yes"
PEERDNS="no"			# Should pppd set the peer dns?

FWSCRIPT="/etc/init.d/firewall"	# Optional FW script that pppd should start
				# and stop when the link comes up or drop.
				# It should be a script that takes two 
				# argument, namely the name of the external
				# interface on which the firewall should be
				# activated and start/stop.
				#
				# called: ${FWSCRIPT} ${DEVICE} [start|stop]

AUTOCFGFILES="yes"		# By default this scripts will generate
				# /etc/ppp/chat-isp, /etc/ppp/chap-secrets,
				# /etc/ppp/pap-secrets and /etc/ppp/peers/isp
				# automagically.  Set to "no" if you experience 
				# problems, or need specialized scripts.  You
				# will have to create these files by hand then.
				# Also, the FWSTART/FWSTOP feature will not 
				# work.


# Do not change .. for determining name of interface
DEVICE="${1##*.}"


CMD_LINE=""

checkconfig() {

	if [ ! -x "`which pppd`" ] || [ ! -x "`which chat`" ] ; then
		eerror "pppd and chat needs to be installed"
		return 1
	fi

	if [ -e "/var/run/ppp-${DEVICE}.pid" ] && [ "${1}" = "start" ] ; then
		eerror "ppp0 is already up"
		return 1
	fi

	if [ ! -e "/var/run/ppp-${DEVICE}.pid" ] && [ "${1}" = "stop" ] ; then
		eerror "ppp0 not up"
		return 1
	fi
						
}

start() {

	checkconfig || return 1

	setup_cmd_line
	setup_cfg_files

	ebegin "Bringing ${DEVICE} up"
	if [ -x "`which pppd`" ]; then

		if [ "${DEFROUTE}" = "yes" ] ; then
			[ "`/sbin/route |grep default`" ] && route del default
		fi

		/usr/sbin/pppd ${CMD_LINE} ${MODEMPORT} ${LINESPEED} ipparam ${DEVICE} \
			linkname ${DEVICE} call ${PEER} noauth ${PPPOPTIONS}
        fi
        eend
}

stop() {

	checkconfig || return 1

	ebegin "Bringing ${DEVICE} down"
	if [ -x "`which ifconfig`" ]; then
		/sbin/ifconfig ${DEVICE} down
	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 "${PAPNAME}" ] ; then
		CMD_LINE="${CMD_LINE} user ${USERNAME} remotename ${PEER}"
	fi

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

setup_cfg_files() {

	if [ "${AUTOCFGFILES}" = "yes" ] ; then

		# Setup the peers file
		echo "connect '/usr/sbin/chat -v -f /etc/ppp/chat-${PEER}'" \
			>/etc/ppp/peers/${PEER}

		# Setup the secrets files
		echo "${USERNAME} ${PEER} \"${PASSWORD}\"" >/etc/ppp/chap-secrets
		chmod 660 /etc/ppp/chap-secrets
		echo "${USERNAME} ${PEER} \"${PASSWORD}\"" >/etc/ppp/pap-secrets
		chmod 660 /etc/ppp/pap-secrets

		# Setup the chat file
		sed -e "9i\\'OK\' \'${INITSTRING}\'" \
			-e "s:\$NUMBER:${NUMBER}:" \
			/usr/lib/ppp/chat-default \
			>/etc/ppp/chat-${PEER}

		# Setup if-up and if-down
		if [ -x ${FWSCRIPT} ] ; then
		
			echo "${FWSCRIPT} \${6} start" >/etc/ppp/if-up
			chmod 770 /etc/ppp/if-up
			echo "${FWSCRIPT} \${6} stop" >/etc/ppp/if-down
			chmod 770 /etc/ppp/if-down

			if [ "${PEERDNS}" = "yes" ] ; then
			
				# if-up: add the server supplied DNS entries to
				# /etc/resolv.conf
				echo "cp -f /etc/resolv.conf /etc/resolv.conf.old" \
					>>/etc/ppp/if-up
				echo "cat /etc/ppp/resolv.conf >> /etc/resolv.conf" \
					>>/etc/ppp/if-up
					
				# if-down: restore original /etc/resolv.conf
				echo "mv -f /etc/resolv.conf.old /etc/resolv.conf" \
					>>/etc/ppp/if-down 
			fi
		fi
	fi
}