Re: [SLE] Modifying /etc/ppp/ip-up

29 Feb 2000


      Paul Sims wrote:
...
just create one - there isn't one by default in SuSE unlike some other
dists. If you read ip-up you'll see a section which calls ip-up.local if
the file exists :)
On Tuesday, February 29, 2000 2:52 AM, Paul W. Abrahams
[SMTP:abrahams@valinet.com] wrote:
...
I would like to make some local modifications to
/etc/ppp/ip-up.  What is the best way to do that so they
won't be lost when I upgrade my system to a new SuSE
version?  Ideally there would be an /etc/ppp/ip-up.local
file called from SuSE's ip-up, but there isn't.
Maybe I'm looking at a different version of ip-up than you are.   I can't find a call on ip-up.local or anything like that in the code.  Here it is:

#!/bin/sh

# (c) '97, S.u.S.E. GmbH, Fuerth, Germany
# Klaus Franken <kfr@suse.de>
# 25.02.98
#
# Remo Behn <sray@suse.de>
# 18.07.98

BASENAME=`basename $0`
INTERFACE=$1
DEVICE=$2
SPEED=$3
LOCALIP=$4
REMOTEIP=$5

if [ -z "$REMOTEIP" ]; then
    echo "Usage: $0 <INTERFACE> <DEVICE> <SPEED> <LOCALIP> <REMOTEIP>"
    exit 1
fi

case "$INTERFACE" in
ippp*)

    . /etc/rc.config

    # find the device
    found=0
    for I in $NETCONFIG; do
        eval NETDEV=\$NETDEV$I
        if [ $NETDEV = $INTERFACE ]; then
            found=1
            break;
        fi
    done
    if [ $found -eq 0 ]; then
        echo "Device '$INTERFACE' not configured in '/etc/rc.config'"
        exit 1
    fi

    eval IFCONFIG=\$IFCONFIG$I
    DEST=`grep -v "^#" /etc/route.conf | grep "$INTERFACE\$" | awk '{ print $1}'`
    DEFAULT=`grep -v "^#" /etc/route.conf | grep default | awk '{ print $2}'`

    #echo "ok, NETDEV:$NETDEV; IFCONFIG:$IFCONFIG."
    #echo "    DEST: $DEST; DEFAULT: $DEFAULT"

    case "$BASENAME" in
    ip-up)
        # default deny
        #ipfwadm -I -p deny
        #ipfwadm -O -p deny

        # flush
        #ipfwadm -I -f
        #ipfwadm -O -f

        # accept dns
        #ipfwadm -O -a accept -P udp -S 0/0 53 1024:65535 -D 0/0 53 -W $INTERFACE
        #ipfwadm -I -a accept -P udp -D 0/0 53 1024:65535 -S 0/0 53 -W $INTERFACE
        #ipfwadm -O -a accept -P tcp -S 0/0 53 1024:65535 -D 0/0 53 -W $INTERFACE
        #ipfwadm -I -a accept -P tcp -D 0/0 53 1024:65535 -S 00/0 53 -k -W $INTERFACE

        # accept conect from client to internet
        #ipfwadm -O -a accept -P tcp -S 0/0 1024:65535 -D 0/0 -W $INTERFACE
        #ipfwadm -I -a accept -P tcp -D 0/0 1024:65535 -S 0/0 -k -W $INTERFACE

        # deny, last match
        #ipfwadm -I -a deny -P tcp -S 0/0 -D 0/0 -W $INTERFACE
        #ipfwadm -I -a deny -P udp -S 0/0 -D 0/0 -W $INTERFACE

        # default accept
        #ipfwadm -I -p accept
        #ipfwadm -O -p accept

        /sbin/route add default gw $REMOTEIP dev $INTERFACE

        # maybe you want to start mail services:
        # set follow variables in /etc/rc.config
        #    SENDMAIL_TYPE="yes"
        #    SENDMAIL_SMARTHOST="<ISP-mailserver>"
        #    SENDMAIL_ARGS="-bd -om"
        #    SENDMAIL_EXPENSIVE="yes"
        #    SENDMAIL_NOCANONIFY="yes"
        #/usr/bin/fetchmail -a -v >>/var/log/fetchmail 2>&1 &
                  #/usr/sbin/sendmail -q &
        ;;
    ip-down)
        # restart interface
        /sbin/ifconfig $INTERFACE down
        # workaround due to kernel problem with 'kernd':
        sleep 1
        /sbin/ifconfig $INTERFACE $IFCONFIG

        # flush, del all rules
        #ipfwadm -I -f
        #ipfwadm -O -f

        # set routes from /etc/route.conf
        test -z "$DEST"    || /sbin/route add -host $DEST dev $INTERFACE
        test -z "$DEFAULT" || /sbin/route add default gw $DEFAULT
        ;;
    *)
        ;;
    esac
    ;;

ppp*)
    # Analog-PPP, add commands as you need...
    case "$BASENAME" in
    ip-up)
        #
        # This code allows automatic configuration of your resolv.conf
        # for peer supplied DNS addresses when using the `usepeerdns'
        # option. Original resolv.conf is restored when ip-down is called
        # by pppd when the link goes down.
        #
        if [ -n "$USEPEERDNS" -a -f /etc/ppp/resolv.conf ]; then
                rm -f /etc/ppp/resolv.prev
                if [ -f /etc/resolv.conf ]; then
                        cp -p /etc/resolv.conf /etc/ppp/resolv.prev
                        grep domain /etc/ppp/resolv.prev > /etc/resolv.conf
                        grep search /etc/ppp/resolv.prev >> /etc/resolv.conf
                        cat /etc/ppp/resolv.conf /etc >> /etc/resolv.conf
                        echo "Modified /etc/resolv.conf for DNS at $INTERFACE"
                else
                        cp /etc/ppp/resolv.conf /etc
                        chmod 644 /etc/resolv.conf
                        echo "Installed /etc/resolv.conf for DNS at $INTERFACE"
                fi
                if [ "$START_NSCD" = yes ]; then
                        /sbin/init.d/nscd restart &
                fi
        fi
        ;;
    ip-down)
        #
        # This code restores the original resolv.conf saved when ip-up
        # was called by the pppd which uses the `usepeerdns' option and
        # resolv.conf was modified for the supplied dns server adresses.
        #
        if [ -n "$USEPEERDNS" -a -f /etc/ppp/resolv.conf ]; then
                if [ -f /etc/ppp/resolv.prev ]; then
                        cp -fp /etc/ppp/resolv.prev /etc/resolv.conf
                        echo "Restored original /etc/resolv.conf"
                else
                        rm -f /etc/resolv.conf
                        echo "Deinstalled /etc/resolv.conf"
                fi
                if [ "$START_NSCD" = yes ]; then
                        /sbin/init.d/nscd restart &
                fi
        fi
        ;;
    *)
        ;;
    esac | logger -t $BASENAME
    ;;
*)
    # dont know...
    ;;
esac


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Re: [SLE] Modifying /etc/ppp/ip-up

abrahams＠valinet.com