#!/bin/sh

# this is a script which is executed after connecting the ppp interface.
# look at man pppd for details

# the followings parameters are available:
# $1 = interface-name
# $2 = tty-device
# $3 = speed
# $4 = local-IP-address
# $5 = remote-IP-address
# $6 = ipparam

if [ "$USEPEERDNS" ]; then

	# add the server supplied DNS entries to /etc/resolv.conf
	# (taken from debian's 0000usepeerdns)

	# follow any symlink to find the real file
	REALRESOLVCONF=$(readlink --canonicalize /etc/resolv.conf)

	if [ "$REALRESOLVCONF" != "/etc/ppp/resolv.conf" ]; then

		# merge the new nameservers with the other options from the old configuration
		{
			grep --invert-match '^nameserver[[:space:]]' $REALRESOLVCONF
			cat /etc/ppp/resolv.conf
		} > $REALRESOLVCONF.tmp

		# backup the old configuration and install the new one
		cp -a $REALRESOLVCONF $REALRESOLVCONF.pppd-backup
		mv $REALRESOLVCONF.tmp $REALRESOLVCONF

		# correct permissions
		chmod 0644 /etc/resolv.conf
		chown root:root /etc/resolv.conf

	fi

fi

[ -f /etc/ppp/ip-up.local ] && . /etc/ppp/ip-up.local "$1" "$2" "$3" "$4" "$5" "$6"