cable-scripts/cable-start

   1 #!/bin/bash
   2 #Made by Marcelo A.
   3
   4 ME=`basename $0`
   5 # Set to "C" locale so we can parse messages from commands
   6 LANG=C
   7 export LANG
   8 # Must be root
   9 if test "`id -u`" != 0 ; then
  10     echo "$0: You must be root to run this script" >& 2
  11     exit 1
  12 fi
  13
  14 CONFIG=/etc/ppp/pptp.conf
  15 USER=""
  16 ETH=""
  17 if test ! -f "$CONFIG" -o ! -r "$CONFIG" ; then
  18     echo "$0: Cannot read configuration file '$CONFIG'" >& 2
  19     exit 1
  20 fi
  21
  22 . $CONFIG
  23
  24 for i in /etc/ppp/ppp-cable.pid /var/run/ppp-cable.pid ; do
  25   if [ -r $i ] ; then
  26      PID="`head -n1 $i`"
  27      #Check if still running
  28    kill -0 $PID > /dev/null 2>&1
  29    if [ $? = 0 ] ; then
  30           echo "$ME: There already seems to be a connection up (PID $PID)" >& 2
  31   exit 1
  32   fi
  33   rm -f $i
  34 fi
  35 done
  36
  37 # pptp invocation
  38 for i in /usr/sbin/pptp-linux ./pptp-linux "`which pptp`" ; do
  39    if test -x "$i" ; then
  40  PPTP_CMD="$i"
  41  break
  42  fi
  43 done
  44   if [ ! -x "$i" ] ; then
  45  echo "Couldn't find any pptp executable , please reinstall."
  46     exit 1
  47   fi
  48
  49 # Check for command-line overriding of USER and ETH
  50 case "$#" in
  51     1)
  52       USER="$1"
  53       ;;
  54     2)
  55       USER="$1"
  56       ETH="$2"
  57       ;;
  58 esac
  59
  60 ##Check if ethx NIC is up and running.
  61 netstat -rn |grep " ${ETH}\$" > /dev/null
  62 /sbin/ifconfig $ETH | grep "UP.*RUNNING" > /dev/null
  63  if [ "$?" != "0" ] ; then
  64         echo "Your $ETH interface isn't UP and/or RUNNING"
  65         exit 1
  66 fi
  67
  68 DGW=$(route -n |grep "^0.*eth"| awk '{ print $2 }')
  69  if [ "$DGW" = "" ] ; then
  70    DGW1=$(route -n|grep "UGH.*eth"|awk '{ print $2 }' )
  71       if [ "$DGW1" = "" ] ; then
  72     echo ""
  73     echo "Something is Fishy with your routing table, no Default Gateway"
  74     echo "Aborting..."
  75     echo ""
  76     exit 1
  77       else
  78       DGW="$DGW1"
  79   route add default gw $DGW 2> /dev/null
  80       fi
  81  fi
  82
  83 # Check that config file is sane
  84 if test "$USER" = "" ; then
  85     echo "$0: Check '$CONFIG' -- no setting for USER" >& 2
  86     exit 1
  87 fi
  88 if test "$ETH" = "" ; then
  89     echo "$0: Check '$CONFIG' -- no setting for ETH" >& 2
  90     exit 1
  91 fi
  92 if test "$SERVERADDR" = "" ; then
  93     echo "$0: Check '$CONFIG' -- no setting for SERVERADDR" >& 2
  94     exit 1
  95 fi
  96 #PPPD_PID=0
  97
  98
  99 # MTU of Ethernet card attached to modem MUST be 1500.
 100 ifconfig $ETH up mtu 1500
 101 modprobe ppp_generic > /dev/null 2>&1
 102 modprobe ppp_async > /dev/null 2>&1
 103
 104 # If DNSTYPE is SERVER, we must use "usepeerdns" option to pppd.
 105 if test "$DNSTYPE" = "SERVER" ; then
 106     PEERDNS=yes
 107 fi
 108
 109 if test "$PEERDNS" = "yes" ; then
 110     PEERDNS="usepeerdns"
 111 else
 112     PEERDNS=""
 113 fi
 114
 115 if test "$PERSIST" != "no" ; then
 116     PERSIST="persist"
 117 else
 118     PERSIST=""
 119 fi
 120
 121 if test "$DEFAULTROUTE" != "no" ; then
 122     DEFAULTROUTE="defaultroute"
 123 else
 124     DEFAULTROUTE="nodefaultroute"
 125 fi
 126
 127 # Standard PPP options we always use
 128 PPP_STD_OPTIONS="noipdefault noauth default-asyncmap noipx $DEFAULTROUTE hide-password nodetach maxfail 1 lcp-max-configure 6 linkname cable ipparam cable-pptp $PEERDNS $PERSIST mtu 1460 mru 1460 noproxyarp noaccomp  nobsdcomp nodeflate nopcomp  user $USER lcp-echo-interval $LCP_INTERVAL lcp-echo-failure $LCP_FAILURE $PPPD_EXTRA"
 129
 130
 131     if test "$OVERRIDE_PPPD_COMMAND" != "" ; then
 132        setsid $OVERRIDE_PPPD_COMMAND &
 133     else
 134         setsid pppd $PPP_STD_OPTIONS \
 135         pty "$PPTP_CMD $SERVERADDR $PPTP_EXTRA --nolaunchpppd" &
 136     fi
 137     sleep 4