gistfile1.txt

#!/bin/bash

HOSTAPD_CONF="/etc/hostapd_ap.conf"
DNSMASQ_CONF="/etc/dnsmasq.d/ap-hotspot.rules"
GW_IP="192.168.150.1"
HOSTAPD_LOG="/tmp/hostapd.log"
WLAN="wlan0"


start() {
service hostapd stop; service dnsmasq stop
echo -n "1. Enter wifi iface to start AP: "
read iface
echo -n "2. Enter AP name: "
read ssid

cat > $HOSTAPD_CONF <<EOF
# WiFi Hotspot
interface=$iface
driver=nl80211
#Access Point
ssid=$ssid
hw_mode=g
# WiFi Channel:
channel=1
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
EOF

if [[ ! $(grep "Bind to only one interface" "$DNSMASQ_CONF") ]]; then
cat <<EOF | tee "$DNSMASQ_CONF"
# Bind to only one interface
bind-interfaces
# Choose interface for binding
interface=$iface
# Specify range of IP addresses for DHCP leasses
dhcp-range=192.168.150.2,192.168.150.10,12h
EOF
chmod +x "$DNSMASQ_CONF"
fi

ifconfig "$iface" "$GW_IP"
service hostapd stop
service dnsmasq stop
service dnsmasq restart
hostapd -B "$HOSTAPD_CONF" -f "$HOSTAPD_LOG"
iptables -F -t nat
iptables -t nat -A PREROUTING -p tcp -m multiport --destination-port 8080,80,443 -j DNAT --to-destination $GW_IP:80
}

stop() {
service hostapd stop; service dnsmasq stop; killall hostapd; sleep 2; killall hostapd	
iptables -F -t nat
ifconfig "mon.$WLAN" down
ifconfig "$WLAN" down
ifconfig "$WLAN" up
}

msg() {
echo "No such option: use start/stop"	
}

case "$1" in
	start)
	start
	;;
	stop)
	stop
	;;
	*)
	msg
esac