1#!/bin/sh 2 3IFNAME=$1 4CMD=$2 5 6kill_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 $PF 21} 22 23if [ "$CMD" = "P2P-GROUP-STARTED" ]; then 24 GIFNAME=$3 25 if [ "$4" = "GO" ]; then 26 kill_daemon udhcpc /var/run/udhcpc-$GIFNAME.pid 27 ifconfig $GIFNAME 192.168.42.1 up 28 udhcpd /etc/udhcpd-p2p.conf 29 fi 30 if [ "$4" = "client" ]; then 31 kill_daemon udhcpc /var/run/udhcpc-$GIFNAME.pid 32 kill_daemon udhcpd /var/run/udhcpd-$GIFNAME.pid 33 udhcpc -i $GIFNAME -p /var/run/udhcpc-$GIFNAME.pid \ 34 -s /etc/udhcpc.script 35 fi 36fi 37 38if [ "$CMD" = "P2P-GROUP-REMOVED" ]; then 39 GIFNAME=$3 40 if [ "$4" = "GO" ]; then 41 kill_daemon udhcpd /var/run/udhcpd-$GIFNAME.pid 42 ifconfig $GIFNAME 0.0.0.0 43 fi 44 if [ "$4" = "client" ]; then 45 kill_daemon udhcpc /var/run/udhcpc-$GIFNAME.pid 46 ifconfig $GIFNAME 0.0.0.0 47 fi 48fi 49 50if [ "$CMD" = "P2P-CROSS-CONNECT-ENABLE" ]; then 51 GIFNAME=$3 52 UPLINK=$4 53 # enable NAT/masquerade $GIFNAME -> $UPLINK 54 iptables -P FORWARD DROP 55 iptables -t nat -A POSTROUTING -o $UPLINK -j MASQUERADE 56 iptables -A FORWARD -i $UPLINK -o $GIFNAME -m state --state RELATED,ESTABLISHED -j ACCEPT 57 iptables -A FORWARD -i $GIFNAME -o $UPLINK -j ACCEPT 58 sysctl net.ipv4.ip_forward=1 59fi 60 61if [ "$CMD" = "P2P-CROSS-CONNECT-DISABLE" ]; then 62 GIFNAME=$3 63 UPLINK=$4 64 # disable NAT/masquerade $GIFNAME -> $UPLINK 65 sysctl net.ipv4.ip_forward=0 66 iptables -t nat -D POSTROUTING -o $UPLINK -j MASQUERADE 67 iptables -D FORWARD -i $UPLINK -o $GIFNAME -m state --state RELATED,ESTABLISHED -j ACCEPT 68 iptables -D FORWARD -i $GIFNAME -o $UPLINK -j ACCEPT 69fi 70