anthony's conn_man script

conn_man.sh

#!/bin/bash
#conn_man by anthony guevara, forked by 666threesixes666

#set interface, if you need to manually enter the interface because of multiple cards
#change to: IFACE=wlan0 or IFACE=wlp2s0
IFACE=$(ifconfig | grep -o 'wl[a-z0-9]*')

        #Check if iface is up
        if( ! $IFACE); then

                ifconfig $IFACE up &&

                echo -e "\n$IFACE is DOWN. Putting it UP now.\n";

        fi

	if [[ ! -d WPA ]]; then 

		mkdir -p WPA;

	fi

	if [[ ! -f WPA/wpa_log ]]; then
	
		touch wpa_log;
	
	fi

        if [[ ! -f network_ssid ]]; then

                touch network_ssid;

        fi

# Clear wap_log every passthrough so we do not generate false errors.
echo > WPA/wpa_log

	# Check for root
	if [[ $EUID -ne 0 ]]; then

		echo -e "\nYou must be root.\n";

		exit;

	fi

        if [[ $1 == "--list" ]]; then

                iw $IFACE scan | awk '/SSID|signal/{print $2}' | sed -e 'N;s/\n/ /;s/\(\-[0-9.]*\)\(.*\)\([a-zA-Z0-9]*\)/\2 \1/';
		
		exit;

	elif [[ $1 == "--help" ]]; then 

		echo -e "\nUSAGE: $0 SSID\n\nOptions:\n\n    --list - List available network SSID's and their respective signals.\n\n    --help - Display this dialog.\n";
		exit;

			else

				# Check for correct amount of arguments
				if [[ $# -ne 1 ]]; then

					echo -e "\nPlease provide an SSID or option.\n";

					echo -e "\nUSAGE: $0 SSID\n";

					echo -e "\nOptions:\n\n    --list - List available network SSID's and their respective signals.\n\n    --help - Display this dialog.\n";

					exit;

						else

			 				iw $IFACE scan | awk '/SSID/{print $2}' > ESSID;

							# Check if the SSID exists.
                	 				if cat ESSID | grep -Fx "$1"; then

                        				echo $1 > network_ssid; 

								else

								 echo -e "\nThe SSID $1 does not exist.\n";

						 		 exit;

                					fi

	 			fi

	 fi

	fi

#(cat ESSID | awk '{print $2}')

# Fixes network timeouts
iw dev $IFACE set power_save off;

# Fixes dropped packets issues
iwconfig $IFACE rate 5.5M fixed;

	# Kills these two programs if they are running
         if( pgrep dhcpcd ); then 

		killall dhcpcd;

	fi

        if( pgrep wpa_supplicant ); then

		killall wpa_supplicant;

	fi

SCAN=$(cat network_ssid);

	#AnthonyAP is my Nexus 5 running DU with Unlmtd Data used for tethering.
	if( ! ( iw dev $IFACE scan ssid $SCAN | grep -o "PSK" | sed -n '1p' ) ); then 

		ifconfig $IFACE down &&

		iwconfig $IFACE ESSID $SCAN &&

		ifconfig $IFACE up && 

		dhcpcd $IFACE && 

		ping google.com; 

			else 
			function WPA_CONN {

				if [[ ! `cat WPA/${SCAN}.conf | wc -w` -eq 0 ]]; then 

                                	wpa_supplicant -i $IFACE -c /home/anthony/Documents/Bash/WPA/${SCAN}.conf -f WPA/wpa_log -B &&

                                	dhcpcd $IFACE &&

                                	ping google.com;


						else
						 PASS=$(zenity --entry --text=Password);

						 wpa_passphrase "$SCAN" "$PASS" >> /home/anthony/Documents/Bash/WPA/${SCAN}.conf &&

						 if( wpa_supplicant -i $IFACE -c /home/anthony/Documents/Bash/WPA/${SCAN}.conf -f wpa_log -B ); then
						
						  if( cat WPA/wpa_log | grep "WPA: Invalid .*$" ); then

						 	echo -e "\nWrong password.\n";

						 		else

						 		dhcpcd $IFACE &&

						 		ping google.com;

						  fi
	
						 fi

				fi
				
			}

		if( ! WPA_CONN ); then

			echo -e "\nError.\n";
		
			WPA_CONN;

		fi
		

	fi