mirror of https://github.com/captn3m0/Scripts.git
285 lines
8.1 KiB
Bash
Executable File
285 lines
8.1 KiB
Bash
Executable File
#!/bin/bash
|
|
# Script to set up a WiFi Hotspot in Ubuntu that works with
|
|
# Android and Windows Phone.
|
|
#
|
|
# Copyright (C) 2014 Alin Andrei <andrew@webupd8.org>
|
|
# Copyright (C) 2014 Satyajit sahoo
|
|
#
|
|
# This scipt is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published
|
|
# by the Free Software Foundation; either version 3 of the License,
|
|
# or (at your option) any later version.
|
|
#
|
|
# The script is distributed in the hope that it will be useful, but
|
|
# WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this script. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
# Global variables
|
|
logfile="/tmp/hostapd.log"
|
|
pidfile="/tmp/hotspot.pid"
|
|
hotspotconfig="/etc/ap-hotspot.conf"
|
|
dnsmasqconfig="/etc/dnsmasq.d/ap-hotspot.rules"
|
|
user=$(who | awk '{print $1}' | sed '/^root$/d' | uniq)
|
|
WMPID=$(ps -u $user | tail -n 1 | awk '{print $1}')
|
|
DBUS=$(egrep -z 'DBUS_SESSION_BUS_ADDRESS|DISPLAY' /proc/${WMPID}/environ | sed -r -e 's/(.)DBUS_/\1 DBUS_/' -e 's/(.)DISPLAY/\1 DISPLAY/')
|
|
|
|
show_msg() {
|
|
echo -e "$@"
|
|
}
|
|
|
|
show_info() {
|
|
echo -e "\033[1;34m$@\033[0m"
|
|
}
|
|
|
|
show_warn() {
|
|
echo -e "\033[1;33m$@\033[0m"
|
|
}
|
|
|
|
show_err() {
|
|
echo -e "\033[1;31m$@\033[0m" 1>&2
|
|
}
|
|
|
|
show_debug() {
|
|
while read input; do
|
|
[[ "$debug" == "true" ]] && echo -e "$input"
|
|
done
|
|
}
|
|
|
|
show_notify() {
|
|
su $user -s /bin/bash -c "${DBUS} notify-send -h int:transient:1 -i \"network-wireless\" \"$@\""
|
|
}
|
|
|
|
check_root() {
|
|
# Check if user is root
|
|
if [[ ! $(whoami) = "root" ]]; then
|
|
show_err "Please run the script as root"
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
check_supported() {
|
|
# Check if the wireless card supports Access Point mode. This script won't work if it doesn't support it
|
|
if [[ ! $(iw list 2>&1 | grep -A6 "Supported interface modes" | grep AP$) ]]; then
|
|
show_err "Your wireless card or driver does not support Access Point mode"
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
check_network() {
|
|
# Check if Wireless is disabled
|
|
if [[ $(iwconfig "$INTERFACE_WLAN" 2>&1 | grep "Tx-Power=off") ]]; then
|
|
show_err "WiFi is disabled, please enable WiFi before running this script"
|
|
exit 1
|
|
# Check if Wireless is enabled, but connected to a network
|
|
elif [[ ! $(iwconfig "$INTERFACE_WLAN" 2>&1 | grep "ESSID:off/any") && $(iwconfig "$INTERFACE_WLAN" 2>&1 | grep "ESSID:") ]]; then
|
|
show_err "Please disconnect WiFi before proceeding"
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
check_connected() {
|
|
# Monitor logfile for connected devices
|
|
lines_con="0"
|
|
lines_dis="0"
|
|
while [[ -f "$logfile" ]]; do
|
|
if [[ "$lines_con" < $(grep -c "AP-STA-CONNECTED" "$logfile") ]]; then
|
|
show_notify "New device connected to Hotspot"
|
|
(( lines_con++ ))
|
|
elif [[ "$lines_dis" < $(grep -c "AP-STA-DISCONNECTED" "$logfile") ]]; then
|
|
show_notify "Device disconnected from Hotspot"
|
|
(( lines_dis++ ))
|
|
fi
|
|
sleep 5
|
|
done
|
|
}
|
|
|
|
configure() {
|
|
# Check root
|
|
check_root
|
|
# Check supported
|
|
check_supported
|
|
# Reset config
|
|
rm -f "$hotspotconfig"
|
|
rm -f "$dnsmasqconfig"
|
|
# Detect configuration
|
|
show_msg "Detecting configuration..."
|
|
INTERFACE_NET=$(route | grep -iw "default" | awk '{printf "%s ", $NF}' | sed -s 's/ $//')
|
|
INTERFACE_WLAN=$(iwconfig 2>&1 | grep "^wlan" | sed -e 's/ .*//g' | tail -n 1)
|
|
SSID="myhotspot"
|
|
WPAPASS="qwerty0987"
|
|
# Network interface connected to the Internet
|
|
if [[ ! $INTERFACE_NET ]]; then
|
|
show_warn "Failed to detect the network interface connected to the Internet. Please enter your network interface (e.g.- eth1):"
|
|
else
|
|
show_msg "Detected $INTERFACE_NET as the network interface connected to the Internet. Press ENTER if this is correct or enter the desired interface below (e.g.- eth0, ppp0 etc.):"
|
|
fi
|
|
read interface_net
|
|
[[ "$interface_net" ]] && INTERFACE_NET="$interface_net"
|
|
# WiFi interface
|
|
if [[ ! $INTERFACE_WLAN ]]; then
|
|
show_warn "Failed to detect the WiFi interface. Please enter your WiFi interface (e.g.- wlan0):"
|
|
else
|
|
show_msg "Detected $INTERFACE_WLAN as your WiFi interface. Press ENTER if this is correct or enter the desired interface (e.g.- wlan1):"
|
|
fi
|
|
read interface_wlan
|
|
[[ "$interface_wlan" ]] && INTERFACE_WLAN="$interface_wlan"
|
|
# Hotspot SSID
|
|
show_msg "Enter the desired Access Point name or press ENTER to use the default one ($SSID):"
|
|
read ssid
|
|
[[ "$ssid" ]] && SSID="$ssid"
|
|
# WPA Passphrase
|
|
show_msg "Enter the desired WPA Passphrase below or press ENTER to use the default one ($WPAPASS):"
|
|
read wpapass
|
|
[[ "$wpapass" ]] && WPAPASS="$wpapass"
|
|
# Write the hostapd config file
|
|
cat <<EOF | tee "$hotspotconfig" > /dev/null 2>&1
|
|
# WiFi Hotspot
|
|
interface=$INTERFACE_WLAN
|
|
driver=nl80211
|
|
#Access Point
|
|
ssid=$SSID
|
|
hw_mode=g
|
|
# WiFi Channel:
|
|
channel=1
|
|
macaddr_acl=0
|
|
auth_algs=1
|
|
ignore_broadcast_ssid=0
|
|
wpa=2
|
|
wpa_passphrase=$WPAPASS
|
|
wpa_key_mgmt=WPA-PSK
|
|
wpa_pairwise=TKIP
|
|
rsn_pairwise=CCMP
|
|
EOF
|
|
# Add the required bits to the dnsmasq config file
|
|
if [[ ! $(grep "Bind to only one interface" "$dnsmasqconfig" > /dev/null 2>&1) ]]; then
|
|
cat <<EOF | tee "$dnsmasqconfig" > /dev/null 2>&1
|
|
# Bind to only one interface
|
|
bind-interfaces
|
|
# Choose interface for binding
|
|
interface=$INTERFACE_WLAN
|
|
# Specify range of IP addresses for DHCP leasses
|
|
dhcp-range=192.168.150.2,192.168.150.10,12h
|
|
#INTERFACE_NET=$INTERFACE_NET
|
|
EOF
|
|
chmod +x "$dnsmasqconfig"
|
|
fi
|
|
}
|
|
|
|
get_vars() {
|
|
# Run Configuration Wizard if config files don't exist
|
|
[[ ! -f "$hotspotconfig" || ! -f "$dnsmasqconfig" ]] && configure
|
|
# Get $INTERFACE_NET and $INTERFACE_WLAN from the config files
|
|
INTERFACE_WLAN=$(grep "interface" "$hotspotconfig" | sed -e 's/interface=//g')
|
|
INTERFACE_NET=$(grep "INTERFACE_NET" "$dnsmasqconfig" | sed -e 's/#INTERFACE_NET=//g')
|
|
}
|
|
|
|
start() {
|
|
# Check previous process
|
|
if [[ -f "$pidfile" ]]; then
|
|
show_err "Another process is already running"
|
|
exit 1
|
|
fi
|
|
# Check root
|
|
check_root
|
|
# Check supported
|
|
check_supported
|
|
# Get variables
|
|
get_vars
|
|
# Check network
|
|
check_network
|
|
# Write the PID to a file
|
|
echo "$$" > "$pidfile"
|
|
show_info "Starting Wireless Hotspot..."
|
|
# Set up the services
|
|
service hostapd stop 2>&1 | show_debug
|
|
service dnsmasq stop 2>&1 | show_debug
|
|
update-rc.d hostapd disable 2>&1 | show_debug
|
|
update-rc.d dnsmasq disable 2>&1 | show_debug
|
|
# Configure IP address for WLAN
|
|
ifconfig "$INTERFACE_WLAN" 192.168.150.1 2>&1 | show_debug
|
|
# Start DHCP/DNS server
|
|
service dnsmasq restart 2>&1 | show_debug
|
|
# Enable routing
|
|
sysctl net.ipv4.ip_forward=1 2>&1 | show_debug
|
|
# Enable NAT
|
|
iptables -t nat -A POSTROUTING -o "$INTERFACE_NET" -j MASQUERADE 2>&1 | show_debug
|
|
# Run access point daemon
|
|
if [[ $(hostapd --help 2>&1 | grep "\-f") ]]; then
|
|
rm -f "$logfile"
|
|
touch "$logfile"
|
|
hostapd -B "$hotspotconfig" -f "$logfile"
|
|
while :
|
|
do
|
|
[[ $(grep "Using interface" "$logfile") ]] && show_info "Wireless Hotspot active" && show_notify "Wireless Hotspot active" && break
|
|
sleep 5
|
|
done
|
|
check_connected 2>&1 &
|
|
disown
|
|
else
|
|
hostapd -B "$hotspotconfig" 2>&1 | show_debug
|
|
show_info "Wireless Hotspot active"
|
|
fi
|
|
}
|
|
|
|
stop() {
|
|
# Check root
|
|
check_root
|
|
# Get variables
|
|
get_vars
|
|
# Kill process
|
|
show_info "Stopping Wireless Hotspot..."
|
|
if [[ -f "$pidfile" ]]; then
|
|
pid=$(cat "$pidfile")
|
|
rm -f "$pidfile"
|
|
[[ $(grep -s "ap-hotspot" "/proc/$pid/cmdline") ]] && kill -9 "$pid"
|
|
fi
|
|
# Delete log
|
|
rm -f "$logfile"
|
|
# Disable NAT
|
|
iptables -D POSTROUTING -t nat -o "$INTERFACE_NET" -j MASQUERADE 2>&1 | show_debug
|
|
# Disable routing
|
|
sysctl net.ipv4.ip_forward=0 2>&1 | show_debug
|
|
# Set up the services
|
|
service hostapd stop 2>&1 | show_debug
|
|
service dnsmasq stop 2>&1 | show_debug
|
|
# Restart WiFi and disable newly created mon.WLAN network
|
|
if [[ ! -z $(ifconfig | grep "mon.$INTERFACE_WLAN") ]]; then
|
|
# Check if the hotspot is active
|
|
ifconfig "mon.$INTERFACE_WLAN" down
|
|
fi
|
|
ifconfig "$INTERFACE_WLAN" down
|
|
ifconfig "$INTERFACE_WLAN" up
|
|
}
|
|
|
|
restart() {
|
|
show_info "Restarting Wireless Hotspot..."
|
|
stop
|
|
start
|
|
}
|
|
|
|
case "$1" in
|
|
start)
|
|
start;;
|
|
stop)
|
|
stop;;
|
|
restart)
|
|
restart;;
|
|
configure)
|
|
configure;;
|
|
debug)
|
|
debug="true"
|
|
start;;
|
|
*)
|
|
args=( "start" "stop" "restart" "configure" "debug" )
|
|
desc=( "start wireless hotspot" "stop wireless hotspot" "restart wireless hotspot" "configure hotspot" "start with detailed messages" )
|
|
echo -e "Usage:\tap-hotspot [argument]\n"
|
|
for ((i=0; i < ${#args[@]}; i++)); do
|
|
printf "\t%-15s%-s\n" "${args[i]}" "${desc[i]}"
|
|
done
|
|
exit;;
|
|
esac
|