libeap/wpa_supplicant/examples/p2p-action.sh

   1 #!/bin/sh
   2
   3 IFNAME=$1
   4 CMD=$2
   5
   6 kill_daemon() {
   7     NAME=$1
   8     PF=$2
   9
  10     if [ ! -r $PF ]; then
  11         return
  12     fi
  13
  14     PID=`cat $PF`
  15     if [ $PID -gt 0 ]; then
  16         if ps $PID | grep -q $NAME; then
  17             kill $PID
  18         fi
  19     fi
  20     rm $PF
  21 }
  22
  23 if [ "$CMD" = "P2P-GROUP-STARTED" ]; then
  24     GIFNAME=$3
  25     if [ "$4" = "GO" ]; then
  26         kill_daemon dhclient /var/run/dhclient-$GIFNAME.pid
  27         rm /var/run/dhclient.leases-$GIFNAME
  28         kill_daemon dnsmasq /var/run/dnsmasq.pid-$GIFNAME
  29         ifconfig $GIFNAME 192.168.42.1 up
  30         if ! dnsmasq -x /var/run/dnsmasq.pid-$GIFNAME \
  31             -i $GIFNAME \
  32             -F192.168.42.11,192.168.42.99; then
  33             # another dnsmasq instance may be running and blocking us; try to
  34             # start with -z to avoid that
  35             dnsmasq -x /var/run/dnsmasq.pid-$GIFNAME \
  36                 -i $GIFNAME \
  37                 -F192.168.42.11,192.168.42.99 --listen-address 192.168.42.1 -z -p 0
  38         fi
  39     fi
  40     if [ "$4" = "client" ]; then
  41         kill_daemon dhclient /var/run/dhclient-$GIFNAME.pid
  42         rm /var/run/dhclient.leases-$GIFNAME
  43         kill_daemon dnsmasq /var/run/dnsmasq.pid-$GIFNAME
  44         ipaddr=`echo "$*" | sed 's/.* ip_addr=\([^ ]*\).*/\1/'`
  45         ipmask=`echo "$*" | sed 's/.* ip_mask=\([^ ]*\).*/\1/'`
  46         goipaddr=`echo "$*" | sed 's/.* go_ip_addr=\([^ ]*\).*/\1/'`
  47         if echo "$ipaddr$ipmask$goipaddr" | grep -q ' '; then
  48             ipaddr=""
  49             ipmask=""
  50             goipaddr=""
  51         fi
  52         if [ -n "$ipaddr" ]; then
  53             sudo ifconfig $GIFNAME "$ipaddr" netmask "$ipmask"
  54             sudo ip ro re default via "$goipaddr"
  55             exit 0
  56         fi
  57         dhclient -pf /var/run/dhclient-$GIFNAME.pid \
  58             -lf /var/run/dhclient.leases-$GIFNAME \
  59             -nw \
  60             $GIFNAME
  61     fi
  62 fi
  63
  64 if [ "$CMD" = "P2P-GROUP-REMOVED" ]; then
  65     GIFNAME=$3
  66     if [ "$4" = "GO" ]; then
  67         kill_daemon dnsmasq /var/run/dnsmasq.pid-$GIFNAME
  68         ifconfig $GIFNAME 0.0.0.0
  69     fi
  70     if [ "$4" = "client" ]; then
  71         kill_daemon dhclient /var/run/dhclient-$GIFNAME.pid
  72         rm /var/run/dhclient.leases-$GIFNAME
  73         ifconfig $GIFNAME 0.0.0.0
  74     fi
  75 fi
  76
  77 if [ "$CMD" = "P2P-CROSS-CONNECT-ENABLE" ]; then
  78     GIFNAME=$3
  79     UPLINK=$4
  80     # enable NAT/masquarade $GIFNAME -> $UPLINK
  81     iptables -P FORWARD DROP
  82     iptables -t nat -A POSTROUTING -o $UPLINK -j MASQUERADE
  83     iptables -A FORWARD -i $UPLINK -o $GIFNAME -m state --state RELATED,ESTABLISHED -j ACCEPT
  84     iptables -A FORWARD -i $GIFNAME -o $UPLINK -j ACCEPT
  85     sysctl net.ipv4.ip_forward=1
  86 fi
  87
  88 if [ "$CMD" = "P2P-CROSS-CONNECT-DISABLE" ]; then
  89     GIFNAME=$3
  90     UPLINK=$4
  91     # disable NAT/masquarade $GIFNAME -> $UPLINK
  92     sysctl net.ipv4.ip_forward=0
  93     iptables -t nat -D POSTROUTING -o $UPLINK -j MASQUERADE
  94     iptables -D FORWARD -i $UPLINK -o $GIFNAME -m state --state RELATED,ESTABLISHED -j ACCEPT
  95     iptables -D FORWARD -i $GIFNAME -o $UPLINK -j ACCEPT
  96 fi