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PiWifiAP/ap-setup.sh
2026-03-06 07:37:37 -05:00

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#!/bin/bash
# ap-setup.sh
# OpenDRS Online Discrepancy Reporting System
# Copyright (C) 2022 Rod Wright
# SPDX-License-Identifier: GPL-2.0
# Wireless Access Point Raspberry Pi Setup
function get_ap_params() {
echo ""
wapssidok=0
while [ "$wapssidok" -ne 1 ]
do
echo "This access point will need an SSID. This is what will appear"
echo "as the name of this terminal when other devices connect."
echo -n "Please enter the desired SSID for this access point: "
read wapssid
if [ "$wapssid" = "" ]
then
echo "SSID cannot be blank. Try again."
else
wapssidok=1
fi
done
wappassok=0
while [ "$wappassok" -ne 1 ]
do
echo "You will need to set a passphrase for this access point. It should"
echo "be at least 8 characters in length and cannot be blank."
echo -n "Please enter the desired passphrase for this access point: "
read wappass
wappasslen=`echo -n $wappass | wc -m`
if [ "$wappass" = "" -o "$wappasslen" -lt 8 ]
then
echo "Passphrase doesn't satisfy requirements above. Try again."
else
wappassok=1
fi
done
# Save parameters in config file
sed -i 's,'wapssid=.*','wapssid="\"$wapssid\""',' /etc/piwifiap.conf
sed -i 's,'wappass=.*','wappass="\"$wappass\""',' /etc/piwifiap.conf
}
current_user=`whoami`
if [ "$current_user" != "root" ]
then
echo "You must have root privileges to run this setup."
echo "Try 'sudo $0'"
exit 1
fi
echo ""
echo ""
echo "If this terminal connects to a network using ethernet, it can be configured"
echo "as a wireless access point for other terminals. Would you like to configure"
echo -n "this terminal as an access point? [y/N]: "
read wapconf
if [ "$wapconf" = "Y" -o "$wapconf" = "y" ]
then
# Determine if we are using NetworkManager or systemd-networkd
echo ""
echo "Copying files..."
chmod +x apsetup/usr/local/bin/*
cp -Rv apsetup/usr/local/bin/* /usr/local/bin
cp -Rv apsetup/etc/* /etc
if systemctl status dhcpcd.service|grep -q "Active: active (running)"
then
echo "Configuring as wireless access point using systemd-networkd."
get_ap_params
# Save network system in config file
sed -i 's,'network_system=.*','network_system="\"systemd-networkd\""',' /etc/piwifiap.conf
apt install hostapd
systemctl unmask hostapd
systemctl enable hostapd
echo "[NetDev]" >/etc/systemd/network/bridge-br0.netdev
echo "Name=br0" >>/etc/systemd/network/bridge-br0.netdev
echo "Kind=bridge" >>/etc/systemd/network/bridge-br0.netdev
echo "[Match]" >/etc/systemd/network/br0-member-eth0.network
echo "Name=eth0" >>/etc/systemd/network/br0-member-eth0.network
echo "" >>/etc/systemd/network/br0-member-eth0.network
echo "[Network]" >>/etc/systemd/network/br0-member-eth0.network
echo "Bridge=br0" >>/etc/systemd/network/br0-member-eth0.network
systemctl enable systemd-networkd
mv /etc/dhcpcd.conf /etc/dhcpcd.conf.old
echo "denyinterfaces wlan0 eth0" >/etc/dhcpcd.conf
cat /etc/dhcpcd.conf.old >>/etc/dhcpcd.conf
echo "interface br0" >>/etc/dhcpcd.conf
rfkill unblock wlan
echo "country_code=US" >/etc/hostapd/hostapd.conf
echo "interface=wlan0" >>/etc/hostapd/hostapd.conf
echo "bridge=br0" >>/etc/hostapd/hostapd.conf
echo "ssid=$wapssid" >>/etc/hostapd/hostapd.conf
echo "hw_mode=g" >>/etc/hostapd/hostapd.conf
echo "channel=7" >>/etc/hostapd/hostapd.conf
echo "macaddr_acl=0" >>/etc/hostapd/hostapd.conf
echo "auth_algs=1" >>/etc/hostapd/hostapd.conf
echo "ignore_broadcast_ssid=0" >>/etc/hostapd/hostapd.conf
echo "wpa=2" >>/etc/hostapd/hostapd.conf
echo "wpa_passphrase=$wappass" >>/etc/hostapd/hostapd.conf
echo "wpa_key_mgmt=WPA-PSK" >>/etc/hostapd/hostapd.conf
echo "wpa_pairwise=TKIP" >>/etc/hostapd/hostapd.conf
echo "rsn_pairwise=CCMP" >>/etc/hostapd/hostapd.conf
if dpkg -l|grep webmin >/dev/null 2>&1
then
wget -c http://github.com/pjz/webmin-modules/releases/download/v1.0/hostap.wbm.gz
gzip -d hostap.wbm.gz
/usr/share/webmin/install-module.pl hostap.wbm
fi
echo ""
echo ""
elif systemctl status NetworkManager.service|grep -q "Active: active (running)"
then
echo "Configuring as wireless access point using NetworkManager."
rfkill unblock wlan
get_ap_params
# Clean up a possible failed previous attempt
nmcli con del piwifi-ap >/dev/null 2>&1
nmcli con del piwifi-ethernet >/dev/null 2>&1
nmcli con del piwifi-apbridge >/dev/null 2>&1
# Save network system in config file
sed -i 's,'network_system=.*','network_system="\"NetworkManager\""',' /etc/piwifiap.conf
nmcli con add type bridge \
con-name piwifi-apbridge \
ifname bridge0
nmcli con add type ethernet \
slave-type bridge \
con-name piwifi-ethernet \
ifname eth0 \
master bridge0
nmcli con add type wifi \
ifname wlan0 \
con-name piwifi-ap \
autoconnect yes \
ssid "$wapssid" \
slave-type bridge \
master bridge0 \
wifi-sec.key-mgmt wpa-psk \
wifi-sec.psk "$wappass" \
802-11-wireless.mode ap \
802-11-wireless.band bg
nmcli con up piwifi-apbridge
nmcli con up piwifi-ethernet
nmcli con up piwifi-ap
else
echo "Unable to determine what type of network configuration (systemd-networkd"
echo "or NetworkManager) your system uses. Automatic setup cannot continue."
exit 1
fi
echo "Wireless access point setup is complete. It will be"
echo "automatically enabled after reboot. To change the SSID or"
echo "passphrase in the future, run:"
echo " sudo wap-setssid"
echo "or:"
echo " sudo wap-setpassphrase"
echo "at a command prompt."
echo ""
echo "To disable the access point altogether in the future, run:"
echo " sudo wap-disable"
echo "at a command prompt and reboot the terminal. To re-enable it, run:"
echo " sudo wap-enable"
echo "at a command prompt and reboot the terminal."
echo ""
echo -n "Press enter key to continue..."
read cont
else
exit 2
fi