netcfg-vpnc/net-auto-vpnc

   1 #!/bin/bash
   2
   3 # Modifed by:     Michael Asher <asherlm [at] gmail dot com
   4 # Last Modified:  06/07/2010
   5 #
   6 # This script is heavily inspired from the net-auto-wireless script
   7 # This will allow you to connect at boot time to the VPN.
   8 # You will need to define a netcfg entry (/etc/networks/examples/vpnc.example)
   9 # In order to use the script.
  10
  11 . /etc/rc.conf
  12 . /etc/rc.d/functions
  13 . /usr/lib/network/globals
  14
  15 # Variables
  16 whichroute=`/usr/sbin/ip route | grep default | grep -o "dev\ [a-z0-9]\{3,5\}"|awk '{print $2}'` # Get default route interface
  17 # Is VPNC even installed?
  18 if [[ ! -x /usr/sbin/vpnc ]]; then
  19    echo "Please install 'vpnc' to use net-auto-vpnc"
  20    exit 0
  21 fi
  22 # Check to see if a VPNC Connection has been defined
  23 if [ -z "${VPN_CONNECTION}" ]; then
  24     report_fail "No VPN_CONNECTION  name set. Set it by adding VPN_CONNECTION=\"NETCFG VPNC configuration\" to rc.conf"
  25     exit 0
  26 fi
  27 #
  28 if [ -z "${WIRED_INTERFACE}" ]; then
  29   chkwiredint="NULL"
  30 else
  31   chkwiredint=`/sbin/ifconfig ${WIRED_INTERFACE} | grep -oi 'RUNNING'`
  32 fi
  33 #
  34 if [ -z "${WIRELESS_INTERFACE}" ]; then
  35   chkwirelessint="NULL"
  36 else
  37   chkwirelessint=`/sbin/ifconfig ${WIRELESS_INTERFACE} | grep -oi 'RUNNING'`
  38 fi
  39 #
  40 if [ -z "${VPN_ROUTE_WAITTIME}" ]; then
  41   VPN_ROUTE_WAITTIME="NULL"
  42 fi
  43 #
  44 if [ -z "${VPN_ROUTE_WAITTIME}" ]; then
  45   VPN_INTERFACE_WAITTIME="NULL"
  46 fi
  47 # Additional Variables
  48 whichroute=`/usr/sbin/ip route | grep default | grep -o "dev\ [a-z0-9]\{3,5\}"|awk '{print $2}'` # Get default route interface
  49 #
  50 checkroutes(){
  51     if [ "$whichroute" == "" ]; then
  52       if [[ "${VPN_ROUTE_WAITTIME}" == "" || "${VPN_ROUTE_WAITTIME}" == "NULL" ]]; then
  53         stat_busy "Default route is not defined. Not running VPN."
  54         stat_fail
  55         exit 1
  56       else
  57         stat_busy "Default route is not defined. Will try again in ${VPN_ROUTE_WAITTIME} seconds" # This is needed to give my wireless time to show up with an IP.
  58         sleep ${VPN_ROUTE_WAITTIME}
  59         whichroute=`/usr/sbin/ip route | grep default | grep -o "dev\ [a-z0-9]\{3,5\}"|awk '{print $2}'`
  60         if [ "$whichroute" == "" ]; then
  61           stat_busy "Default route is currently not defined. Not running VPN"
  62           stat_fail
  63           exit 1
  64         fi
  65       fi
  66     fi
  67 }
  68 #
  69 checkrunninginterfaces(){
  70   interfaces=0
  71   donotrunint=0
  72   if [[ "$chkwiredint" == "" || "$chkwiredint" == "NULL" ]]; then
  73     if [ "$chkwirelessint" == "" ]; then
  74         if [[ "${VPN_INTERFACE_WAITTIME}" == "" || "${VPN_INTERFACE_WAITTIME}" == "NULL"  ]]; then
  75           stat_busy "VPN_INTERFACE_WAITTIME not defined in rc.conf"
  76           stat_busy "No interfaces are currently available. VPN not established"
  77           stat_fail
  78           exit 0
  79         else
  80           stat_busy "No interfaces are currently available. Trying again in ${VPN_INTERFACE_WAITTIME} seconds."
  81           sleep ${VPN_INTERFACE_WAITTIME}
  82         fi
  83     elif [ "$chkwirelessint" == "RUNNING" ]; then
  84       if [ "${VPN_DONOTRUNONTHISINTERFACE}" == "${WIRELESS_INTERFACE}" ]; then
  85         stat_busy "${WIRELESS_INTERFACE} has been configured to not auto-start VPN"
  86         donotrunint=$donotrunint+1
  87       else
  88           interfaces=$interfaces+1
  89       fi
  90     fi
  91   elif [ "$chkwiredint" == "RUNNING" ]; then
  92     if [ "${VPN_DONOTRUNONTHISINTERFACE}" == "${WIRED_INTERFACE}" ]; then
  93         stat_busy "${WIRED_INTERFACE} has been configured to not auto-start VPN"
  94         donotrunint=$donotrunint+1
  95     else
  96         interfaces=$interfaces+1
  97     fi
  98   fi
  99   # Run it again - Assuming items above failed
 100   chkwiredint=`/sbin/ifconfig ${WIRED_INTERFACE} | grep -oi 'RUNNING'`
 101   chkwirelessint=`/sbin/ifconfig ${WIRELESS_INTERFACE} | grep -oi 'RUNNING'`
 102   if [[ "$chkwiredint" == "" || "$chkwiredint" == "NULL" ]]; then
 103     if [ "$chkwirelessint" == "" ]; then
 104       stat_busy "No interfaces found running. VPN not established." # No need to try again. Get through to finish booting.
 105       stat_fail
 106       exit 0
 107     elif [ "$chkwirelessint" == "RUNNING" ]; then
 108       if [ "${VPN_DONOTRUNONTHISINTERFACE}" == "${WIRELESS_INTERFACE}" ]; then
 109         stat_busy "${WIRED_INTERFACE} has been configured to not auto-start VPN"
 110         donotrunint=$donotrunint+1
 111       else
 112           interfaces=$interfaces+1
 113       fi
 114     elif [ "$chkwiredint" == "RUNNING" ]; then
 115       if [ "${VPN_DONOTRUNONTHISINTERFACE}" == "${WIRED_INTERFACE}" ]; then
 116         stat_busy "${WIRED_INTERFACE} has been configured to not auto-start VPN"
 117         donotrunint=$donotrunint+1
 118       else
 119         interfaces=$interfaces+1
 120       fi
 121     fi
 122   fi
 123
 124   # Final check
 125   if [[ "$donotrunint" == "0" ]]; then
 126     if [[ "$interfaces" == "0" || $interfaces == "" ]]; then
 127       stat_busy "No interfaces found running. VPN not established."
 128       stat_fail
 129       exit 0
 130     fi
 131   else
 132       exit 0
 133   fi
 134 }
 135
 136 case "$1" in
 137     start)
 138         if  ! ck_daemon net-auto-vpnc; then
 139             exit_stderr "net-auto-vpnc has already been started: try \"/etc/rc.d/net-auto-vpnc restart\""
 140         fi
 141         checkrunninginterfaces
 142         checkroutes
 143         stat_busy "Starting netcfg auto-vpnc connection ${VPN_CONNECTION}"
 144         /usr/bin/netcfg up "${VPN_CONNECTION}"
 145         if [ $? -eq 0 ]; then
 146             add_daemon net-auto-vpnc
 147             stat_done
 148         else
 149             stat_fail
 150         fi
 151         ;;
 152     stop)
 153         if ! ck_daemon net-auto-vpnc; then
 154             stat_busy "Stopping netcfg auto-vpnc connection ${VPN_CONNECTION}"
 155             /usr/bin/netcfg down "${VPN_CONNECTION}" >>/dev/null 2>&1
 156             if [ $? -eq 0 ]; then
 157                 rm_daemon net-auto-vpnc
 158                 stat_done
 159             else
 160                 stat_fail
 161             fi
 162         fi
 163         ;;
 164     restart)
 165         "$0" stop
 166         sleep 1
 167         "$0" start
 168         ;;
 169     *)
 170         echo "Usage: $0 {start|stop|restart|kill}"
 171         exit 1
 172         ;;
 173 esac
 174 exit 0
 175 # vim: ft=sh ts=4 et sw=4: