#!/bin/sh 
#
# Script to initiate a ppp connection to U-M ITD dialin server.
# Also requires the 'chat' script named $DIALER_SCRIPT below,
# and a ppp/options file with proper options.
#
# Note: if you run this via sudo, as you should, you may have to enter
# your local password (prompt is "Password:") to prove you are
# authorized, then your ppp username and remote password.  Don't get
# confused if asked for two passwords.
#
# Eric Myers <myers@umich.edu>, Dept. of Physics, Univ. of Michigan
# @(#) $Id: ppp-um,v 1.6 1999/07/01 14:39:23 myers Exp myers $
######################################################################
# Defaults and parameters

TELEPHONE=489-2222	# New U-M ITD dialin 
MODEM=/dev/ttyS2	# where is the modem device?
# BAUD is speed between computer and modem, so use fastest possible
BAUD=115200

LOCAL_IP=0.0.0.0	# Local IP address if known. Dynamic = 0.0.0.0
REMOTE_IP=0.0.0.0	# Remote IP address if desired. Normally 0.0.0.0
NETMASK=255.255.255.0	# The proper netmask if needed

# This is the location of the script which dials the phone and logs
# in.  Please use the absolute file name as the $PATH variable is not
# used on the connect option. 
DIALER_SCRIPT=/etc/ppp/ppp-um-dialin

# Where to log  things:
PPPLOG=/var/adm/ppp.log

######################################################################
# First argument, if it is give, is the telephone number

if [ ! $# -lt 1 ]; then
   TELEPHONE="$1"
fi

# Second argument, if given, is the baud rate

if [ ! $# -lt 2 ]; then
   BAUD="$2"
fi

echo "PPP dial-in on $TELEPHONE"

# Rather than leave a password in a file someone might be able
# to read, we ask for the ppp password each time the connection
# is to be brought up, and turn off the echo while it is entered.

echo -n "ppp login: "
read ACCOUNT
# If ACCOUNT does not contain @ then add the domain:
ACCOUNT=$ACCOUNT@umich.edu

echo -n "ppp password: "
stty -echo
read PASSWORD
stty echo
echo " "

# Export them so that they will be available to DIALER_SCRIPT

export TELEPHONE ACCOUNT PASSWORD

# Mark the log:

echo "$0 by $USER to $TELEPHONE on `date`" >>${PPPLOG} 2>&1

###########################
## Stuff I use for the LAPTOP ONLY
#
# Turn Ethernet off while using the modem?  
# /sbin/ifconfig eth0 down	>>${PPPLOG} 2>&1
#
# Flush any default routes so that pppd can establish a new
# one with 'defaultroute'
#/sbin/route del default	>>${PPPLOG} 2>&1
#/sbin/route del 141.211.96.0	>>${PPPLOG} 2>&1
#
# Reset the PCMCIA card (modem) 
#/sbin/cardctl reset	>>${PPPLOG} 2>&1
#/sbin/cardctl status	>>${PPPLOG} 2>&1
#
###########################

# Turn off the echo on modem serial port

stty -echo <${MODEM} &

echo "Starting pppd... "

# The basic options here get things going, but specific options for
# the connection are in the file /etc/ppp/options.
#
exec /usr/sbin/pppd $MODEM $BAUD $LOCAL_IP:$REMOTE_IP \
    connect $DIALER_SCRIPT  

exit 0