release/src/router/rp-pppoe/scripts/pppoe-start.in

   1 #!/bin/sh
   2 # @configure_input@
   3 #***********************************************************************
   4 #
   5 # pppoe-start
   6 #
   7 # Shell script to bring up a PPPoE connection
   8 #
   9 # Copyright (C) 2000 Roaring Penguin Software Inc.
  10 #
  11 # $Id$
  12 #
  13 # This file may be distributed under the terms of the GNU General
  14 # Public License.
  15 #
  16 # LIC: GPL
  17 #
  18 # Usage: pppoe-start [config_file]
  19 #        pppoe-start interface user [config_file]
  20 # Second form overrides USER and ETH from config file.
  21 # If config_file is omitted, defaults to /etc/ppp/pppoe.conf
  22 #
  23 #***********************************************************************
  24
  25 # From AUTOCONF
  26 prefix=@prefix@
  27 exec_prefix=@exec_prefix@
  28
  29 # Paths to programs
  30 CONNECT=@sbindir@/pppoe-connect
  31 ECHO=@ECHO@
  32 IFCONFIG=/sbin/ifconfig
  33
  34 # Set to "C" locale so we can parse messages from commands
  35 LANG=C
  36 export LANG
  37
  38 # Defaults
  39 CONFIG=/etc/ppp/pppoe.conf
  40 USER=""
  41 ETH=""
  42 ME=`basename $0`
  43 # Must be root
  44 if [ "`@ID@ -u`" != 0 ] ; then
  45     $ECHO "$ME: You must be root to run this script" >& 2
  46     exit 1
  47 fi
  48
  49 # Debugging
  50 if [ "$DEBUG" = "1" ] ; then
  51     $ECHO "*** Running in debug mode... please be patient..."
  52     DEBUG=/tmp/pppoe-debug-$$
  53     export DEBUG
  54     mkdir $DEBUG
  55     if [ "$?" != 0 ] ; then
  56         $ECHO "Could not create directory $DEBUG... exiting"
  57         exit 1
  58     fi
  59     DEBUG=$DEBUG/pppoe-debug.txt
  60
  61     # Initial debug output
  62     $ECHO "---------------------------------------------" > $DEBUG
  63     $ECHO "* The following section contains information about your system" >> $DEBUG
  64     date >> $DEBUG
  65     $ECHO "Output of uname -a" >> $DEBUG
  66     uname -a >> $DEBUG
  67     $ECHO "---------------------------------------------" >> $DEBUG
  68     $ECHO "* The following section contains information about your network" >> $DEBUG
  69     $ECHO "* interfaces.  The one you chose for PPPoE should contain the words:" >> $DEBUG
  70     $ECHO "* 'UP' and 'RUNNING'.  If it does not, you probably have an Ethernet" >> $DEBUG
  71     $ECHO "* driver problem." >> $DEBUG
  72     $ECHO "Output of ifconfig -a" >> $DEBUG
  73     $IFCONFIG -a >> $DEBUG
  74     $ECHO "---------------------------------------------" >> $DEBUG
  75     if [ "`uname -s`" = "Linux" ] ; then
  76         $ECHO "* The following section contains information about kernel modules" >> $DEBUG
  77         $ECHO "* If the module for your Ethernet card is 'tulip', you might" >> $DEBUG
  78         $ECHO "* want to look for an updated version at http://www.scyld.com" >> $DEBUG
  79         $ECHO "Output of lsmod" >> $DEBUG
  80         lsmod >> $DEBUG
  81         $ECHO "---------------------------------------------" >> $DEBUG
  82     fi
  83     $ECHO "* The following section lists your routing table." >> $DEBUG
  84     $ECHO "* If you have an entry which starts with '0.0.0.0', you probably" >> $DEBUG
  85     $ECHO "* have defined a default route and gateway, and pppd will" >> $DEBUG
  86     $ECHO "* not create a default route using your ISP.  Try getting" >> $DEBUG
  87     $ECHO "* rid of this route." >> $DEBUG
  88     $ECHO "Output of netstat -n -r" >> $DEBUG
  89     netstat -n -r >> $DEBUG
  90     $ECHO "---------------------------------------------" >> $DEBUG
  91     $ECHO "Contents of /etc/resolv.conf" >> $DEBUG
  92     $ECHO "* The following section lists DNS setup." >> $DEBUG
  93     $ECHO "* If you can browse by IP address, but not name, suspect" >> $DEBUG
  94     $ECHO "* a DNS problem." >> $DEBUG
  95     cat /etc/resolv.conf >> $DEBUG
  96     $ECHO "---------------------------------------------" >> $DEBUG
  97     $ECHO "* The following section lists /etc/ppp/options." >> $DEBUG
  98     $ECHO "* You should have NOTHING in that file." >> $DEBUG
  99     $ECHO "Contents of /etc/ppp/options" >> $DEBUG
 100     cat /etc/ppp/options >> $DEBUG 2>/dev/null
 101     $ECHO "---------------------------------------------" >> $DEBUG
 102 else
 103     DEBUG=""
 104 fi
 105
 106 # Sort out command-line arguments
 107 case "$#" in
 108     1)
 109         CONFIG="$1"
 110         ;;
 111     3)
 112         CONFIG="$3"
 113         ;;
 114 esac
 115
 116 if [ ! -f "$CONFIG" -o ! -r "$CONFIG" ] ; then
 117     $ECHO "$ME: Cannot read configuration file '$CONFIG'" >& 2
 118     exit 1
 119 fi
 120 export CONFIG
 121 . $CONFIG
 122
 123 # Check for command-line overriding of ETH and USER
 124 case "$#" in
 125     2|3)
 126         ETH="$1"
 127         USER="$2"
 128         ;;
 129 esac
 130
 131 # Check for pidfile
 132 if [ -r "$PIDFILE" ] ; then
 133     PID=`cat "$PIDFILE"`
 134     # Check if still running
 135     kill -0 $PID > /dev/null 2>&1
 136     if [ $? = 0 ] ; then
 137         $ECHO "$ME: There already seems to be a PPPoE connection up (PID $PID)" >& 2
 138         exit 1
 139     fi
 140     # Delete bogus PIDFILE
 141     rm -f "$PIDFILE" "$PIDFILE.pppd" "$PIDFILE.pppoe" "$PIDFILE.start"
 142 fi
 143
 144 echo $$ > $PIDFILE.start
 145
 146 # Start the connection in the background unless we're debugging
 147 if [ "$DEBUG" != "" ] ; then
 148     $CONNECT "$@"
 149     exit 0
 150 fi
 151
 152 $CONNECT "$@" > /dev/null 2>&1 &
 153 CONNECT_PID=$!
 154
 155 if [ "$CONNECT_TIMEOUT" = "" -o "$CONNECT_TIMEOUT" = 0 ] ; then
 156     exit 0
 157 fi
 158
 159 # Don't monitor connection if dial-on-demand
 160 if [ "$DEMAND" != "" -a "$DEMAND" != "no" ] ; then
 161     exit 0
 162 fi
 163
 164 # Monitor connection
 165 TIME=0
 166 while [ true ] ; do
 167     @sbindir@/pppoe-status $CONFIG > /dev/null 2>&1
 168
 169     # Looks like the interface came up
 170     if [ $? = 0 ] ; then
 171         # Print newline if standard input is a TTY
 172         tty -s && $ECHO " Connected!"
 173         exit 0
 174     fi
 175
 176     if test -n "$FORCEPING" ; then
 177         printf "%s" "$FORCEPING"
 178     else
 179         tty -s && printf "%s" "$PING"
 180     fi
 181     sleep $CONNECT_POLL
 182     TIME=`expr $TIME + $CONNECT_POLL`
 183     if [ $TIME -gt $CONNECT_TIMEOUT ] ; then
 184         break
 185     fi
 186 done
 187
 188 $ECHO "TIMED OUT" >& 2
 189 # Timed out!  Kill the pppoe-connect process and quit
 190 kill $CONNECT_PID > /dev/null 2>&1
 191
 192 # Clean up PIDFILE(s)
 193 rm -f "$PIDFILE" "$PIDFILE.pppd" "$PIDFILE.pppoe" "$PIDFILE.start"
 194
 195 exit 1
 196