Raspberry Pi 3 access-point-setup

setup-access-point.sh

#!/bin/bash
#
# This version uses September 2016 rpi jessie image, please use this image
# Modified to:
#     setup access point on wlan1
#     network is 10.10.10.x
#     SSID is hostname
#     password is robotsarecool
#

if [ "$EUID" -ne 0 ]
	then echo "Must be root"
	exit 1
fi

# if [[ $# -lt 1 ]]; 
# 	then echo "You need to pass a password!"
# 	echo "Usage:"
# 	echo "sudo $0 yourChosenPassword [apName]"
# 	exit
# fi

APPASS="robotsarecool"
APSSID=`uname -n`

# if [[ $# -eq 2 ]]; then
# 	APSSID=$2
# fi

apt-get remove --purge hostapd -y
apt-get install hostapd dnsmasq -y

# double check /etc/init.d/hostapd is not there, if so delete it

cat > /etc/systemd/system/hostapd.service <<EOF
[Unit]
Description=Hostapd IEEE 802.11 Access Point
After=sys-subsystem-net-devices-wlan1.device
BindsTo=sys-subsystem-net-devices-wlan1.device

[Service]
Type=forking
PIDFile=/var/run/hostapd.pid
ExecStart=/usr/sbin/hostapd -B /etc/hostapd/hostapd.conf -P /var/run/hostapd.pid

[Install]
WantedBy=multi-user.target

EOF

cat > /etc/dnsmasq.conf <<EOF
interface=wlan1
dhcp-range=10.10.10.5,10.10.10.100,255.255.255.0,24h
EOF

cat > /etc/hostapd/hostapd.conf <<EOF
interface=wlan1
hw_mode=g
channel=10
auth_algs=1
wpa=2
wpa_key_mgmt=WPA-PSK
wpa_pairwise=CCMP
rsn_pairwise=CCMP
wpa_passphrase=$APPASS
ssid=$APSSID
EOF

# delete previous wlan1 entry, note, wpa-conf get wipped out everywhere
sed -i -- 's/allow-hotplug wlan1//g' /etc/network/interfaces
sed -i -- 's/iface wlan1 inet manual//g' /etc/network/interfaces
sed -i -- 's/    wpa-conf \/etc\/wpa_supplicant\/wpa_supplicant.conf//g' /etc/network/interfaces

# need to add back wpa-conf
cat >> /etc/network/interfaces <<EOF
	wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

# Added by setup-access-point.sh
allow-hotplug wlan1
iface wlan1 inet static
	address 10.10.10.1
	netmask 255.255.255.0
	network 10.10.10.0
	broadcast 10.10.10.255

EOF

echo "denyinterfaces wlan1" >> /etc/dhcpcd.conf

systemctl enable hostapd

echo "All done! Please reboot"