#!/bin/bash
apt -y install dnsmasq hostapd iptables-persistent

cat <<EOF>> /etc/dhcpcd.conf

interface uap0
        static ip_address=192.168.50.1/24
        nohook wpa_supplicant
EOF

mv /etc/dnsmasq.conf /etc/dnsmasq.conf.orig

cat <<EOF> /etc/dnsmasq.conf 
interface=lo,uap0               #Use interfaces lo and uap0
bind-interfaces                 #Bind to the interfaces
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
# Assign IP addresses between 192.168.70.50 and 192.168.70.150 with a 12-hour lease time
dhcp-range=192.168.70.50,192.168.70.150,12h
EOF

cat <<EOF> /etc/hostapd/hostapd.conf
channel=1
ssid=farofa
wpa_passphrase=mistoquente2019#
interface=uap0
hw_mode=g
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=2
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP
driver=nl80211
EOF

cat <<EOF> /etc/default/hostapd
DAEMON_CONF="/etc/hostapd/hostapd.conf"
DAEMON_OPTS="-d -t -f /var/log/hostapd.log"
EOF

cat <<EOF> /usr/local/bin/wifistart
#!/bin/bash

iw dev wlan0 interface add uap0 type __ap
ifconfig uap0 up
ifconfig uap0 192.168.70.1 netmask 255.255.255.0 broadcast 192.168.70.255
EOF

chmod +x /usr/local/bin/wifistart

cat <<EOF> /etc/rc.local
#!/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

/usr/local/bin/wifistart

exit 0
EOF

sed -i 's/\#net.ipv4.ip_forward\=1/net.ipv4.ip_forward\=1/g' /etc/sysctl.conf 

iptables -t nat -A POSTROUTING -j MASQUERADE
netfilter-persistent save

systemctl unmask hostapd
systemctl enable hostapd
systemctl unmask dnsmasq
systemctl enable dnsmasq