hostap/wpa_supplicant/examples/p2p-action.sh
Jouni Malinen 2e98839243 P2P: Disable DNS server from dnsmasq
This avoids issues with multiple instances of dnsmasq running, e.g.,
with one on eth0 and the other one for the P2P group.

Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
2014-01-27 22:08:14 +02:00

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#!/bin/sh
IFNAME=$1
CMD=$2
kill_daemon() {
NAME=$1
PF=$2
if [ ! -r $PF ]; then
return
fi
PID=`cat $PF`
if [ $PID -gt 0 ]; then
if ps $PID | grep -q $NAME; then
kill $PID
fi
fi
rm $PF
}
if [ "$CMD" = "P2P-GROUP-STARTED" ]; then
GIFNAME=$3
if [ "$4" = "GO" ]; then
kill_daemon dhclient /var/run/dhclient-$GIFNAME.pid
rm /var/run/dhclient.leases-$GIFNAME
kill_daemon dnsmasq /var/run/dnsmasq.pid-$GIFNAME
ifconfig $GIFNAME 192.168.42.1 up
if ! dnsmasq -x /var/run/dnsmasq.pid-$GIFNAME \
-i $GIFNAME \
-F192.168.42.11,192.168.42.99; then
# another dnsmasq instance may be running and blocking us; try to
# start with -z to avoid that
dnsmasq -x /var/run/dnsmasq.pid-$GIFNAME \
-i $GIFNAME \
-F192.168.42.11,192.168.42.99 --listen-address 192.168.42.1 -z -p 0
fi
fi
if [ "$4" = "client" ]; then
kill_daemon dhclient /var/run/dhclient-$GIFNAME.pid
rm /var/run/dhclient.leases-$GIFNAME
kill_daemon dnsmasq /var/run/dnsmasq.pid-$GIFNAME
ipaddr=`echo "$*" | sed 's/.* ip_addr=\([^ ]*\).*/\1/'`
ipmask=`echo "$*" | sed 's/.* ip_mask=\([^ ]*\).*/\1/'`
goipaddr=`echo "$*" | sed 's/.* go_ip_addr=\([^ ]*\).*/\1/'`
if echo "$ipaddr$ipmask$goipaddr" | grep -q ' '; then
ipaddr=""
ipmask=""
goipaddr=""
fi
if [ -n "$ipaddr" ]; then
sudo ifconfig $GIFNAME "$ipaddr" netmask "$ipmask"
sudo ip ro re default via "$goipaddr"
exit 0
fi
dhclient -pf /var/run/dhclient-$GIFNAME.pid \
-lf /var/run/dhclient.leases-$GIFNAME \
-nw \
$GIFNAME
fi
fi
if [ "$CMD" = "P2P-GROUP-REMOVED" ]; then
GIFNAME=$3
if [ "$4" = "GO" ]; then
kill_daemon dnsmasq /var/run/dnsmasq.pid-$GIFNAME
ifconfig $GIFNAME 0.0.0.0
fi
if [ "$4" = "client" ]; then
kill_daemon dhclient /var/run/dhclient-$GIFNAME.pid
rm /var/run/dhclient.leases-$GIFNAME
ifconfig $GIFNAME 0.0.0.0
fi
fi
if [ "$CMD" = "P2P-CROSS-CONNECT-ENABLE" ]; then
GIFNAME=$3
UPLINK=$4
# enable NAT/masquarade $GIFNAME -> $UPLINK
iptables -P FORWARD DROP
iptables -t nat -A POSTROUTING -o $UPLINK -j MASQUERADE
iptables -A FORWARD -i $UPLINK -o $GIFNAME -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables -A FORWARD -i $GIFNAME -o $UPLINK -j ACCEPT
sysctl net.ipv4.ip_forward=1
fi
if [ "$CMD" = "P2P-CROSS-CONNECT-DISABLE" ]; then
GIFNAME=$3
UPLINK=$4
# disable NAT/masquarade $GIFNAME -> $UPLINK
sysctl net.ipv4.ip_forward=0
iptables -t nat -D POSTROUTING -o $UPLINK -j MASQUERADE
iptables -D FORWARD -i $UPLINK -o $GIFNAME -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables -D FORWARD -i $GIFNAME -o $UPLINK -j ACCEPT
fi