rp-pppoe/pppoe-setup
2024-04-15 17:22:55 -04:00

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#! /bin/bash
#***********************************************************************
#
# pppoe-setup
#
# All-purpose slicing/dicing shell script to configure rp-pppoe.
#
# Copyright (C) 2000 Roaring Penguin Software Inc.
#
# $Id$
#***********************************************************************
# Paths to programs and config files
IP=/sbin/ip
PPPD=/usr/sbin/pppd
PPPOE=/sbin/pppoe
ECHO=/bin/echo
LS=/bin/ls
ID=/usr/bin/id
NETWORKDIR=/etc/sysconfig/network-scripts
PAPFILE=/etc/ppp/chap-secrets
CHAPFILE=/etc/ppp/pap-secrets
RESOLVFILE=/etc/resolv.conf
# Set to "C" locale so we can parse messages from commands
LANG=C
export LANG
# Protect created files
umask 077
copy() {
cp $1 $2
if [ "$?" != 0 ] ; then
$ECHO "*** Error copying $1 to $2"
$ECHO "*** Quitting."
exit 1
fi
}
get_device() {
if [ ! -d $NETWORKDIR ] ; then
$ECHO "** $NETWORKDIR not found"
$ECHO "** Quitting"
exit 1
fi
cd $NETWORKDIR
interfaces=$($LS ifcfg-ppp* 2>/dev/null | egrep -v '(~|\.bak)$' | \
egrep -v '(rpmsave|rpmorig|rpmnew)' | sed 's/^ifcfg-//g')
for i in $interfaces ; do
test -f ifcfg-$i && . ifcfg-$i 2>/dev/null
if [ "$TYPE" = "xDSL" ] ; then
device_count=$[$device_count+1]
devices="$devices $DEVICE"
fi
done
}
clear_env() {
unset USERCTL BOOTPROTO NAME DEVICE TYPE ONBOOT FIREWALL PING \
PPPOE_TIMEOUT LCP_FAILURE LCP_INTERVAL CLAMPMSS CONNECT_POLL \
CONNECT_TIMEOUT DEFROUTE SYNCHRONOUS ETH PROVIDER USER PEERDNS \
DNS1 DNS2
}
clear
$ECHO "Welcome to the PPPoE client setup. First, I will run some checks on"
$ECHO "your system to make sure the PPPoE client is installed properly..."
$ECHO ""
# Must be root
if [ "`$ID -u`" != 0 ] ; then
$ECHO "$0: Sorry, you must be root to run this script"
exit 1
fi
# Must have pppd
if [ ! -x $PPPD ] ; then
$ECHO "Oops, I can't execute the program '$PPPD'. You"
$ECHO "must install the PPP software suite, version 2.3.10 or later."
exit 1
fi
# get the DSL config files in /etc/sysconfig/network-scripts
devices=""
device_count=0
get_device
if [ $device_count -gt 0 ] ; then
$ECHO "The following DSL config was found on your system:"
$ECHO ""
$ECHO " Device: Name:"
for i in $devices ; do
. $NETWORKDIR/ifcfg-$i
$ECHO " $i $NAME"
done
$ECHO ""
for i in $devices ; do
default_device=$i
break
done
clear_env
while [ true ] ; do
$ECHO "Please enter the device if you want to configure the present DSL config"
$ECHO -n "(default $default_device) or enter 'n' if you want to create a new one: "
read dev
if [ "$dev" = "n" ] ; then
i=0
while true; do
found=0
for j in $interfaces ; do
if [ "$j" = "ppp$i" ] ; then
found=1
break
fi
done
if [ $found -eq 0 ] ; then
dsl_device="ppp$i"
break
fi
i=$[$i+1]
done
if [ -z "$dsl_device" ]; then
dev=0
while [ -e $NETWORKDIR/ifcfg-ppp$dev ]; do
dev=`expr $dev + 1`
done
dsl_device="ppp$dev"
fi
break
else
if [ -n "$default_device" ] ; then
if [ -n "$dev" ] ; then
dsl_device="$dev"
else
dsl_device="$default_device"
fi
fi
for i in $devices ; do
[ "$dsl_device" = "$i" ] && break
done
if [ "$dsl_device" = "$i" ] ; then
break
fi
$ECHO "Device '$dsl_device' is not found in the list, please choose the correct one"
fi
done
else
dev=0
while [ -e $NETWORKDIR/ifcfg-ppp$dev ]; do
dev=`expr $dev + 1`
done
dsl_device="ppp$dev"
fi
CONFIG="$NETWORKDIR/ifcfg-$dsl_device"
DEVICE=$dsl_device
export CONFIG
[ "$dev" = "n" ] || . $CONFIG 2>/dev/null
[ "$DEMAND" = "" ] && DEMAND=no
while [ true ] ; do
$ECHO ""
$ECHO "LOGIN NAME"
$ECHO ""
if [ -z "$USER" ] ; then
$ECHO -n "Enter your Login Name: "
else
$ECHO -n "Enter your Login Name (default $USER): "
fi
read U
if [ -z "$U" ] ; then
if [ -z "$USER" ] ; then
continue
fi
else
USER="$U"
fi
# Under Linux, "fix" the default interface if eth1 is not available
[ -n "$ETH" ] || ETH=eth0
if test `uname -s` = "Linux" ; then
$IP link show $ETH > /dev/null 2>&1 || ETH=eth0
fi
$ECHO ""
$ECHO "INTERFACE"
$ECHO ""
$ECHO "Enter the Ethernet interface connected to the PPPoE modem"
$ECHO "For Solaris, this is likely to be something like /dev/hme0."
$ECHO "For Linux, it will be ethX, where 'X' is a number."
$ECHO -n "(default $ETH): "
read E
if [ -n "$E" ] ; then
ETH="$E"
fi
$ECHO ""
$ECHO "Do you want the link to come up on demand, or stay up continuously?"
$ECHO "If you want it to come up on demand, enter the idle time in seconds"
$ECHO "after which the link should be dropped. If you want the link to"
$ECHO "stay up permanently, enter 'no' (two letters, lower-case.)"
$ECHO "NOTE: Demand-activated links do not interact well with dynamic IP"
$ECHO "addresses. You may have some problems with demand-activated links."
$ECHO -n "Enter the demand value (default $DEMAND): "
read D
if [ -n "$D" ] ; then
DEMAND="$D"
fi
$ECHO ""
$ECHO "DNS"
$ECHO ""
$ECHO "Please enter the IP address of your ISP's primary DNS server."
$ECHO "If your ISP claims that 'the server will provide dynamic DNS addresses',"
$ECHO "enter 'server' (all lower-case) here."
$ECHO "If you just press enter, I will assume you know what you are"
$ECHO "doing and not modify your DNS setup."
$ECHO -n "Enter the DNS information here: "
read DNS1
if [ -n "$DNS1" ] ; then
if [ "$DNS1" != "server" ] ; then
$ECHO "Please enter the IP address of your ISP's secondary DNS server."
$ECHO "If you just press enter, I will assume there is only one DNS server."
$ECHO -n "Enter the secondary DNS server address here: "
read DNS2
fi
fi
while [ true ] ; do
$ECHO ""
$ECHO "PASSWORD"
$ECHO ""
stty -echo
$ECHO -n "Please enter your Password: "
read PWD1
$ECHO ""
$ECHO -n "Please re-enter your Password: "
read PWD2
$ECHO ""
stty echo
if [ "$PWD1" = "$PWD2" ] ; then
break
fi
$ECHO -n "Sorry, the passwords do not match. Try again? (y/n)"
read ANS
case "$ANS" in
N|No|NO|Non|n|no|non)
$ECHO "OK, quitting. Bye."
exit 1
esac
done
# Usercontrol
$ECHO ""
$ECHO "USERCTRL"
$ECHO
$ECHO "Please enter 'yes' (three letters, lower-case.) if you want to allow"
$ECHO -n "normal user to start or stop DSL connection (default yes): "
read USERCTL
if [ -z "$USERCTL" ] ; then
USERCTL="yes"
fi
# Firewalling
$ECHO ""
$ECHO "FIREWALLING"
$ECHO ""
if test `uname -s` != "Linux" ; then
$ECHO "Sorry, firewalling is only supported under Linux. Consult"
$ECHO "your operating system manuals for details on setting up"
$ECHO "packet filters for your system."
FIREWALL=NONE
else
$ECHO "Please choose the firewall rules to use. Note that these rules are"
$ECHO "very basic. You are strongly encouraged to use a more sophisticated"
$ECHO "firewall setup; however, these will provide basic security. If you"
$ECHO "are running any servers on your machine, you must choose 'NONE' and"
$ECHO "set up firewalling yourself. Otherwise, the firewall rules will deny"
$ECHO "access to all standard servers like Web, e-mail, ftp, etc. If you"
$ECHO "are using SSH, the rules will block outgoing SSH connections which"
$ECHO "allocate a privileged source port."
$ECHO ""
while [ true ] ; do
$ECHO "The firewall choices are:"
$ECHO "0 - NONE: This script will not set any firewall rules. You are responsible"
$ECHO " for ensuring the security of your machine. You are STRONGLY"
$ECHO " recommended to use some kind of firewall rules."
$ECHO "1 - STANDALONE: Appropriate for a basic stand-alone web-surfing workstation"
$ECHO "2 - MASQUERADE: Appropriate for a machine acting as an Internet gateway"
$ECHO " for a LAN"
$ECHO -n "Choose a type of firewall (0-2): "
read a
if [ "$a" = 0 -o "$a" = 1 -o "$a" = 2 ] ; then
break
fi
$ECHO "Please enter a number from 0 to 2"
done
case "$a" in
0)
FIREWALL=NONE
;;
1)
FIREWALL=STANDALONE
;;
2)
FIREWALL=MASQUERADE
;;
esac
fi
$ECHO ""
$ECHO "Start this connection at boot time"
$ECHO ""
$ECHO "Do you want to start this connection at boot time?"
$ECHO -n "Please enter no or yes (default no):"
read boot
case "$boot" in
yes|YES) ONBOOT="yes";;
*) ONBOOT="no";;
esac
$ECHO ""
$ECHO "** Summary of what you entered **"
$ECHO ""
$ECHO "Ethernet Interface: $ETH"
$ECHO "User name: $USER"
if [ "$DEMAND" = "no" ] ; then
$ECHO "Activate-on-demand: No"
else
$ECHO "Activate-on-demand: Yes; idle timeout = $DEMAND seconds"
fi
if [ -n "$DNS1" ] ; then
if [ "$DNS1" = "server" ] ; then
$ECHO "DNS addresses: Supplied by ISP's server"
else
$ECHO "Primary DNS: $DNS1"
if [ -n "$DNS2" ] ; then
$ECHO "Secondary DNS: $DNS2"
fi
fi
else
$ECHO "DNS: Do not adjust"
fi
$ECHO "Firewalling: $FIREWALL"
$ECHO "User Control: $USERCTL"
while [ true ] ; do
$ECHO -n 'Accept these settings and adjust configuration files (y/n)? '
read ANS
case "ANS" in
Y|y|yes|Yes|oui|Oui)
ANS=y
;;
N|n|no|No|non|Non)
ANS=n
;;
esac
if [ "$ANS" = "y" -o "$ANS" = "n" ] ; then
break
fi
done
if [ "$ANS" = "y" ] ; then
break
fi
done
# Adjust configuration files. First to $CONFIG
$ECHO "Adjusting $CONFIG"
test -f $CONFIG && copy $CONFIG $CONFIG.bak
if [ "$DNS1" = "server" ] ; then
DNS1=""
DNS2=""
PEERDNS=yes
else
PEERDNS=no
fi
# Where is pppd likely to put its pid?
if [ -d /var/run ] ; then
VARRUN=/var/run
else
VARRUN=/etc/ppp
fi
$ECHO "USERCTL=$USERCTL" >$CONFIG
$ECHO "BOOTPROTO=dialup" >>$CONFIG
[ -z "$NAME" ] && NAME="DSL$DEVICE"
$ECHO "NAME=DSL$DEVICE" >>$CONFIG
$ECHO "DEVICE=$DEVICE" >>$CONFIG
$ECHO "TYPE=xDSL" >>$CONFIG
$ECHO "ONBOOT=$ONBOOT" >>$CONFIG
$ECHO "PIDFILE=/var/run/pppoe-adsl.pid" >>$CONFIG
$ECHO "FIREWALL=$FIREWALL" >>$CONFIG
[ -z "$PING" ] && PING="."
$ECHO "PING=$PING" >>$CONFIG
[ -z "$PPPOE_TIMEOUT" ] && PPPOE_TIMEOUT=80
$ECHO "PPPOE_TIMEOUT=$PPPOE_TIMEOUT" >>$CONFIG
[ -z "$LCP_FAILURE" ] && LCP_FAILURE=3
$ECHO "LCP_FAILURE=$LCP_FAILURE" >>$CONFIG
[ -z "$LCP_INTERVAL" ] && LCP_INTERVAL=20
$ECHO "LCP_INTERVAL=$LCP_INTERVAL" >>$CONFIG
[ -z "$CLAMPMSS" ] && CLAMPMSS=1412
$ECHO "CLAMPMSS=$CLAMPMSS" >>$CONFIG
[ -z "$CONNECT_POLL" ] && CONNECT_POLL=6
$ECHO "CONNECT_POLL=$CONNECT_POLL" >>$CONFIG
[ -z "$CONNECT_TIMEOUT" ] && CONNECT_TIMEOUT=60
$ECHO "CONNECT_TIMEOUT=$CONNECT_TIMEOUT" >>$CONFIG
[ -z "$DEFROUTE" ] && DEFROUTE=yes
$ECHO "DEFROUTE=$DEFROUTE" >>$CONFIG
[ -z "$SYNCHRONOUS" ] && SYNCHRONOUS=no
$ECHO "SYNCHRONOUS=$SYNCHRONOUS" >>$CONFIG
$ECHO "ETH=$ETH" >> $CONFIG
[ -z "$PROVIDER" ] && PROVIDER="$NAME"
$ECHO "PROVIDER=$PROVIDER" >>$CONFIG
$ECHO "USER=$USER" >>$CONFIG
$ECHO "PEERDNS=$PEERDNS" >>$CONFIG
$ECHO "DEMAND=$DEMAND" >>$CONFIG
if [ -n "$DNS1" ] ; then
if [ "$DNS1" != "server" ] ; then
$ECHO "Adjusting $RESOLVFILE"
if [ -r $RESOLVFILE ] ; then
grep -s "MADE-BY-RP-PPPOE" $RESOLVFILE > /dev/null 2>&1
if [ "$?" != 0 ] ; then
$ECHO " (But first backing it up to $RESOLVFILE.bak)"
test -f $$RESOLVFILE && copy $RESOLVFILE $RESOLVFILE.bak
fi
fi
$ECHO "# MADE-BY-RP-PPPOE" > $RESOLVFILE
$ECHO "nameserver $DNS1" >> $RESOLVFILE
if [ -n "$DNS2" ] ; then
$ECHO "nameserver $DNS2" >> $RESOLVFILE
fi
fi
fi
$ECHO "Adjusting $PAPFILE and $CHAPFILE"
if [ -r $PAPFILE ] ; then
$ECHO " (But first backing it up to $PAPFILE.bak)"
test -f $PAPFILE && copy $PAPFILE $PAPFILE.bak
else
cp /dev/null $PAPFILE.bak
fi
if [ -r $CHAPFILE ] ; then
$ECHO " (But first backing it up to $CHAPFILE.bak)"
test -f $CHAPFILE && copy $CHAPFILE $CHAPFILE.bak
else
cp /dev/null $CHAPFILE.bak
fi
egrep -v "^$USER|^\"$USER\"" $PAPFILE.bak > $PAPFILE
$ECHO "\"$USER\" * \"$PWD1\"" >> $PAPFILE
egrep -v "^$USER|^\"$USER\"" $CHAPFILE.bak > $CHAPFILE
$ECHO "\"$USER\" * \"$PWD1\"" >> $CHAPFILE
$ECHO ""
$ECHO ""
$ECHO ""
$ECHO "Congratulations, it should be all set up!"
$ECHO ""
$ECHO "Type '/sbin/ifup $dsl_device' to bring up your xDSL link and '/sbin/ifdown $dsl_device'"
$ECHO "to bring it down."
$ECHO "Type '/sbin/pppoe-status $NETWORKDIR/ifcfg-$dsl_device'"
$ECHO "to see the link status."
$ECHO ""
exit 0