#!/bin/sh
# @configure_input@
#***********************************************************************
#
# adsl-start
#
# Shell script to bring up an ADSL connection
#
# Copyright (C) 2000 Roaring Penguin Software Inc.
#
# $Id$
#
# This file may be distributed under the terms of the GNU General
# Public License.
#
# Usage: adsl-start [config_file]
#        adsl-start interface user [config_file]
# Second form overrides USER and ETH from config file.
# If config_file is omitted, defaults to /etc/ppp/pppoe.conf
#
#***********************************************************************

# From AUTOCONF
prefix=@prefix@
exec_prefix=@exec_prefix@

# Paths to programs
CONNECT=@sbindir@/adsl-connect
IFCONFIG=/sbin/ifconfig

# Defaults
CONFIG=/etc/ppp/pppoe.conf
USER=""
ETH=""
ME=`basename $0`
# Must be root
if [ "`id -u`" != 0 ] ; then
    echo "$ME: You must be root to run this script" >& 2
    exit 1
fi

# Debugging
if [ "$DEBUG" = "1" ] ; then
    echo "*** Running in debug mode... please be patient..."
    DEBUG=/tmp/pppoe-debug-$$
    export DEBUG
    mkdir $DEBUG
    if [ "$?" != 0 ] ; then
	echo "Could not create directory $DEBUG... exiting"
	exit 1
    fi
    DEBUG=$DEBUG/pppoe-debug.txt

    # Initial debug output
    echo "---------------------------------------------" > $DEBUG
    date >> $DEBUG
    echo "Output of uname -a" >> $DEBUG
    uname -a >> $DEBUG
    echo "---------------------------------------------" >> $DEBUG
    echo "Output of ifconfig -a" >> $DEBUG
    $IFCONFIG -a >> $DEBUG
    echo "---------------------------------------------" >> $DEBUG
    if [ "`uname -s`" = "Linux" ] ; then
	echo "Output of lsmod" >> $DEBUG
	lsmod >> $DEBUG
	echo "---------------------------------------------" >> $DEBUG
    fi
    echo "Output of netstat -n -r" >> $DEBUG
    netstat -n -r >> $DEBUG
    echo "---------------------------------------------" >> $DEBUG
    echo "Contents of /etc/resolv.conf" >> $DEBUG
    cat /etc/resolv.conf >> $DEBUG
    echo "---------------------------------------------" >> $DEBUG
    echo "Contents of /etc/ppp/options" >> $DEBUG
    cat /etc/ppp/options >> $DEBUG 2>/dev/null
    echo "---------------------------------------------" >> $DEBUG
else
    DEBUG=""
fi

# Sort out command-line arguments
case "$#" in
    1)
	CONFIG="$1"
	;;
    3)
	CONFIG="$3"
	;;
esac

if [ ! -f "$CONFIG" -o ! -r "$CONFIG" ] ; then
    echo "$ME: Cannot read configuration file '$CONFIG'" >& 2
    exit 1
fi

. $CONFIG

# Check for command-line overriding of ETH and USER
case "$#" in
    2|3)
	ETH="$1"
	USER="$2"
	;;
esac

# Check for pidfile
if [ -r "$PIDFILE" ] ; then
    PID=`cat "$PIDFILE"`
    # Check if still running
    kill -0 $PID > /dev/null 2>&1
    if [ $? = 0 ] ; then
	echo "$ME: There already seems to be an ADSL connection up (PID $PID)" >& 2
	exit 1
    fi
    # Delete bogus PIDFILE
    rm -f "$PIDFILE" "$PIDFILE.pppd" "$PIDFILE.pppoe"
fi

# Start the connection in the background unless we're debugging
if [ "$DEBUG" != "" ] ; then
    $CONNECT "$@"
    exit 0
fi

$CONNECT "$@" > /dev/null 2>&1 &
CONNECT_PID=$!

if [ "$CONNECT_TIMEOUT" = "" -o "$CONNECT_TIMEOUT" = 0 ] ; then
    exit 0
fi

# Don't monitor connection if dial-on-demand
if [ "$DEMAND" != "" -a "$DEMAND" != "no" ] ; then
    exit 0
fi

# Monitor connection
TIME=0
while [ true ] ; do
    @sbindir@/adsl-status $CONFIG > /dev/null 2>&1

    # Looks like the interface came up
    if [ $? = 0 ] ; then
	# Print newline if standard input is a TTY
	tty -s && echo " Connected!"
	exit 0
    fi

    tty -s && echo -n "$PING"
    sleep $CONNECT_POLL
    TIME=`expr $TIME + $CONNECT_POLL`
    if [ $TIME -gt $CONNECT_TIMEOUT ] ; then
	break
    fi
done

echo "TIMED OUT"
# Timed out!  Kill the adsl-connect process and quit
kill $CONNECT_PID > /dev/null 2>&1
exit 1