install_old.sh

##!/bin/sh

run_it () {

PREFIX="/usr/local"

set -e
set -u

# Let's display everything on stderr.
exec 1>&2

UNAME=$(uname)
# Check to see if OS is Raspbian
if [ "$UNAME" != "Linux" ] ; then
    echo "This installer script is only designed to be executed on Raspbian."
    echo "Please run this script on a v3 Rasbperry Pi with Raspbian installed."
    exit 1
fi

# Check that script is running under root
if [ "$EUID" -ne 0 ] ; then
    echo "This installer script must be run with sudo."
    exit 1
fi

# Update the package manager and install base packages
# apt-get update --assume-yes
# apt-get upgrade --assume-yes

apt-get install --assume-yes hostapd dnsmasq

# Ignore wlan0 for dhcpcd
echo "denyinterfaces wlan0" >> /etc/dhcpcd.conf

#
cat > /etc/network/interfaces << EOL
# interfaces(5) file used by ifup(8) and ifdown(8)

# Please note that this file is written to be used with dhcpcd
# For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf'

# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d

auto lo
iface lo inet loopback

iface eth0 inet manual

allow-hotplug wlan0
iface wlan0 inet static
    address 172.24.1.1
    netmask 255.255.255.0
    network 172.24.1.0
    broadcast 172.24.1.255

allow-hotplug wlan1
iface wlan1 inet manual
    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf
EOL

# Restart wireless and the DHCP server
service dhcpcd restart
ifdown wlan0
ifup wlan0

cat > /etc/hostapd/hostapd.conf << EOL
# This is the name of the WiFi interface we configured above
interface=wlan0

# Use the nl80211 driver with the brcmfmac driver
driver=nl80211

# This is the name of the network
ssid=Pi3-AP

# Use the 2.4GHz band
hw_mode=g

# Use channel 6
channel=6

# Enable 802.11n
ieee80211n=1

# Enable WMM
wmm_enabled=1

# Enable 40MHz channels with 20ns guard interval
ht_capab=[HT40][SHORT-GI-20][DSSS_CCK-40]

# Accept all MAC addresses
macaddr_acl=0

# Use WPA authentication
auth_algs=1

# Require clients to know the network name
ignore_broadcast_ssid=0

# Use WPA2
wpa=2

# Use a pre-shared key
wpa_key_mgmt=WPA-PSK

# The network passphrase
wpa_passphrase=raspberry

# Use AES, instead of TKIP
rsn_pairwise=CCMP
EOL

cat > /etc/default/hostapd << EOL
# Defaults for hostapd initscript
#
# See /usr/share/doc/hostapd/README.Debian for information about alternative
# methods of managing hostapd.
#
# Uncomment and set DAEMON_CONF to the absolute path of a hostapd configuration
# file and hostapd will be started during system boot. An example configuration
# file can be found at /usr/share/doc/hostapd/examples/hostapd.conf.gz
#
DAEMON_CONF="/etc/hostapd/hostapd.conf"

# Additional daemon options to be appended to hostapd command:-
#   -d   show more debug messages (-dd for even more)
#   -K   include key data in debug messages
#   -t   include timestamps in some debug messages
#
# Note that -B (daemon mode) and -P (pidfile) options are automatically
# configured by the init.d script and must not be added to DAEMON_OPTS.
#
#DAEMON_OPTS=""
EOL

sudo mv /etc/dnsmasq.conf /etc/dnsmasq.conf.orig
cat > /etc/dnsmasq.conf << EOL
interface=wlan0      # Use interface wlan0
listen-address=172.24.1.1 # Explicitly specify the address to listen on
bind-interfaces      # Bind to the interface to make sure we aren't sending things elsewhere
server=8.8.8.8       # Forward DNS requests to Google DNS
domain-needed        # Don't forward short names
bogus-priv           # Never forward addresses in the non-routed address spaces.
dhcp-range=172.24.1.50,172.24.1.150,12h # Assign IP addresses between 172.24.1.50 and 172.24.1.150 with a 12 hour lease time
EOL

# Enable ipv4 forwarding
echo "net.ipv4.ip_forward=1" >> /etc/sysctl.conf
sh -c "echo 1 > /proc/sys/net/ipv4/ip_forward"

iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
iptables -A FORWARD -i eth0 -o wlan0 -m state --state RELATED,ESTABLISHED -j ACCEPT
iptables -A FORWARD -i wlan0 -o eth0 -j ACCEPT

# Save the iptables routing rules
sh -c "iptables-save > /etc/iptables.ipv4.nat"

cat > /etc/rc.local << EOL
#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

# Print the IP address
_IP=$(hostname -I) || true
if [ "$_IP" ]; then
  printf "My IP address is %s\n" "$_IP"
fi

iptables-restore < /etc/iptables.ipv4.nat
exit 0
EOL

service hostapd restart
service dnsmasq restart


}

run_it