130 lines
3.3 KiB
Bash
130 lines
3.3 KiB
Bash
|
#!/bin/bash
|
||
|
|
|
||
|
|
# Configuration =======================================================================================================
|
||
|
|
|
||
|
|
SSID="$(hostname)" # Access point SSID name
|
||
|
|
PASSWORD="guesswhatitis" # Access point password
|
||
|
|
DHCP_IP="10.10.10.1" # Device IP on access point
|
||
|
|
DHCP_START="10.10.10.2" # Start of DHCP IP pool
|
||
|
|
DHCP_END="10.10.10.254" # End of DHCP IP pool
|
||
|
|
|
||
|
|
# End of Configuration ================================================================================================
|
||
|
|
|
||
|
|
SCRIPT="$(basename $0)"
|
||
|
|
FORCE=false
|
||
|
|
QUIET=false
|
||
|
|
|
||
|
|
show_help() {
|
||
|
|
echo "Usage: $(basename $0) [OPTIONS]"
|
||
|
|
echo ""
|
||
|
|
echo "Options:"
|
||
|
|
echo " -f, --force Create AP regardless of WiFi status"
|
||
|
|
echo " -h, --help Show this help message"
|
||
|
|
echo " -q, --quiet Run without output"
|
||
|
|
echo " --enable Enable automatic fallback AP"
|
||
|
|
echo " --disable Disable automatic fallback AP"
|
||
|
|
}
|
||
|
|
|
||
|
|
enable_ap() {
|
||
|
|
rw > /dev/null
|
||
|
|
log_message "Enabling AP..."
|
||
|
|
systemctl stop dhcpcd
|
||
|
|
systemctl stop wpa_supplicant
|
||
|
|
systemctl stop systemd-resolved
|
||
|
|
ip link set wlan0 down
|
||
|
|
ip link set wlan0 up
|
||
|
|
ip addr add "$DHCP_IP/24" dev wlan0
|
||
|
|
|
||
|
|
# Configure and start hostapd
|
||
|
|
cat <<EOF > /etc/hostapd/hostapd.conf
|
||
|
|
interface=wlan0
|
||
|
|
ssid=$SSID
|
||
|
|
hw_mode=g
|
||
|
|
channel=7
|
||
|
|
wpa=2
|
||
|
|
wpa_passphrase=$PASSWORD
|
||
|
|
wpa_key_mgmt=WPA-PSK
|
||
|
|
wpa_pairwise=TKIP
|
||
|
|
rsn_pairwise=CCMP
|
||
|
|
EOF
|
||
|
|
systemctl unmask hostapd
|
||
|
|
systemctl start hostapd
|
||
|
|
|
||
|
|
# Configure and start dnsmasq
|
||
|
|
cat <<EOF > /etc/dnsmasq.conf
|
||
|
|
interface=wlan0
|
||
|
|
dhcp-range=$DHCP_START,$DHCP_END,255.255.255.0,24h
|
||
|
|
EOF
|
||
|
|
systemctl start dnsmasq
|
||
|
|
}
|
||
|
|
|
||
|
|
disable_ap() {
|
||
|
|
log_message "Disabling AP..."
|
||
|
|
ip addr del "$DHCP_IP/24" dev wlan0
|
||
|
|
systemctl stop hostapd
|
||
|
|
systemctl stop dnsmasq
|
||
|
|
systemctl start systemd-resolved
|
||
|
|
systemctl restart dhcpcd
|
||
|
|
}
|
||
|
|
|
||
|
|
enable_cron() {
|
||
|
|
if [ -z "$(which crontab)" ]; then
|
||
|
|
echo "Error: Please install crontab"
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
sed -i "/$SCRIPT/d" /etc/crontab
|
||
|
|
echo "* * * * * root $(realpath $0) -q" >> /etc/crontab
|
||
|
|
echo "Automatic fallback AP enabled"
|
||
|
|
}
|
||
|
|
|
||
|
|
disable_cron() {
|
||
|
|
sed -i "/$SCRIPT/d" /etc/crontab
|
||
|
|
echo "Automatic fallback AP disabled"
|
||
|
|
}
|
||
|
|
|
||
|
|
log_message() {
|
||
|
|
if [ "$QUIET" != "true" ]; then
|
||
|
|
echo "$1"
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
# Parse command line arguments
|
||
|
|
while [[ "$#" -gt 0 ]]; do
|
||
|
|
case $1 in
|
||
|
|
-f|--force) FORCE=true ;;
|
||
|
|
-h|--help) show_help && exit ;;
|
||
|
|
-q|--quiet) QUIET=true ;;
|
||
|
|
--enable) enable_cron && exit ;;
|
||
|
|
--disable) disable_cron && disable_ap && exit ;;
|
||
|
|
*)
|
||
|
|
if [ -z "$SSID" ]; then
|
||
|
|
SSID="$1"
|
||
|
|
elif [ -z "$PASSWORD" ]; then
|
||
|
|
PASSWORD="$1"
|
||
|
|
else
|
||
|
|
echo "Unknown option: $1"
|
||
|
|
show_help
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
;;
|
||
|
|
esac
|
||
|
|
shift
|
||
|
|
done
|
||
|
|
|
||
|
|
# Check for permissions
|
||
|
|
if [ "$UID" != "0" ]; then
|
||
|
|
echo "Error: Please run as root"
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
|
||
|
|
# Check if connected to WiFi
|
||
|
|
if [ "$FORCE" == "false" ] && [ -n "$(iwgetid -r)" ] ; then
|
||
|
|
log_message "Already connected to WiFi"
|
||
|
|
# Disable the access point if it's running
|
||
|
|
if [ "$(systemctl is-active hostapd)" == "active" ]; then
|
||
|
|
disable_ap
|
||
|
|
fi
|
||
|
|
elif [ "$(systemctl is-active hostapd)" != "active" ]; then
|
||
|
|
if [ "$FORCE" == "true" ]; then disable_cron; fi
|
||
|
|
enable_ap
|
||
|
|
fi
|