code.vuplus.com Git - vuplus_openembedded/blob - recipes/netbase/netbase/vusolo/init

   1 #!/bin/sh
   2 #
   3 # manage network interfaces and configure some networking options
   4
   5 PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
   6
   7 if ! [ -x /sbin/ifup ]; then
   8     exit 0
   9 fi
  10
  11 spoofprotect_rp_filter () {
  12     # This is the best method: turn on Source Address Verification and get
  13     # spoof protection on all current and future interfaces.
  14
  15     if [ -e /proc/sys/net/ipv4/conf/all/rp_filter ]; then
  16         for f in /proc/sys/net/ipv4/conf/*; do
  17             [ -e $f/rp_filter ] && echo 1 > $f/rp_filter
  18         done
  19         return 0
  20     else
  21         return 1
  22     fi
  23 }
  24
  25 spoofprotect () {
  26     echo -n "Setting up IP spoofing protection: "
  27     if spoofprotect_rp_filter; then
  28         echo "rp_filter."
  29     else
  30         echo "FAILED."
  31     fi
  32 }
  33
  34 ip_forward () {
  35     if [ -e /proc/sys/net/ipv4/ip_forward ]; then
  36         echo -n "Enabling packet forwarding... "
  37         echo 1 > /proc/sys/net/ipv4/ip_forward
  38         echo "done."
  39     fi
  40 }
  41
  42 syncookies () {
  43     if [ -e /proc/sys/net/ipv4/tcp_syncookies ]; then
  44         echo -n "Enabling TCP/IP SYN cookies... "
  45         echo 1 > /proc/sys/net/ipv4/tcp_syncookies
  46         echo "done."
  47     fi
  48 }
  49
  50 wpa_supplicantcheck () {
  51     if [ -e /var/run/wpa_supplicant ]; then
  52         echo -n "disabling wpa_supplicant "
  53         start-stop-daemon -K -x /usr/sbin/wpa_supplicant
  54         # HACK: wpa_supplicant sometimes doesn't quit properly on SIGTERM.
  55         if [ -e /var/run/wpa_supplicant ]; then
  56                 echo -n "wpa_supplicant still running, force kill now.. "
  57                 killall -9 /usr/sbin/wpa_supplicant
  58                 rm -rf /var/run/wpa_supplicant
  59                 echo "done."
  60                 fi
  61         echo "done."
  62     fi
  63 }
  64
  65 doopt () {
  66     optname=$1
  67     default=$2
  68     opt=`grep "^$optname=" /etc/network/options`
  69     if [ -z "$opt" ]; then
  70         opt="$optname=$default"
  71     fi
  72     optval=${opt#$optname=}
  73     if [ "$optval" = "yes" ]; then
  74         eval $optname
  75     fi
  76 }
  77
  78 case "$1" in
  79     start)
  80         doopt spoofprotect yes
  81         doopt syncookies no
  82         doopt ip_forward no
  83
  84         echo -n "Configuring network interfaces... "
  85                                 wpa_supplicantcheck
  86         ifup -a
  87         echo "done."
  88         ;;
  89     stop)
  90         if sed -n 's/^[^ ]* \([^ ]*\) \([^ ]*\) .*$/\1 \2/p' /proc/mounts |
  91           grep -q "^/ nfs$"; then
  92             echo "NOT deconfiguring network interfaces: / is an NFS mount"
  93         elif sed -n 's/^[^ ]* \([^ ]*\) \([^ ]*\) .*$/\1 \2/p' /proc/mounts |
  94           grep -q "^/ smbfs$"; then
  95             echo "NOT deconfiguring network interfaces: / is an SMB mount"
  96         elif sed -n 's/^[^ ]* \([^ ]*\) \([^ ]*\) .*$/\2/p' /proc/mounts |
  97           grep -qE '^(nfs|smbfs|ncp|coda)$'; then
  98             echo "NOT deconfiguring network interfaces: network shares still mounted."
  99         else
 100             echo -n "Deconfiguring network interfaces... "
 101             ifdown -a
 102             wpa_supplicantcheck
 103             echo "done."
 104         fi
 105         ;;
 106     force-reload|restart)
 107         echo -n "Reconfiguring network interfaces... "
 108         ifdown -a
 109         wpa_supplicantcheck
 110         ifup -a
 111         echo "done."
 112         ;;
 113     *)
 114         echo "Usage: /etc/init.d/networking {start|stop|restart|force-reload}"
 115         exit 1
 116         ;;
 117 esac
 118
 119 exit 0
 120