Read wifi networks from file

src/freedombone-wifi

@@ -41,6 +41,8 @@ WIFI_TYPE='wpa2-psk'
 WIFI_SSID=
 WIFI_PASSPHRASE=
 WIFI_HOTSPOT='no'
+WIFI_CONFIG=/etc/wpa_supplicant/wpa_supplicant.conf
+WIFI_FILE=/root/${PROJECT_NAME}-wifi.cfg
 
 function wifi_get_psk {
 	ssid=$1
@@ -155,11 +157,11 @@ function wifi_wpa2_psk {
 	echo '' >> /etc/network/interfaces
 	echo 'allow-hotplug wlan0' >> /etc/network/interfaces
 	echo 'iface wlan0 inet manual' >> /etc/network/interfaces
-    echo 'wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf' >> /etc/network/interfaces
+	echo "  wpa-roam $WIFI_CONFIG" >> /etc/network/interfaces
 	echo '' >> /etc/network/interfaces
 	echo 'iface default inet dhcp' >> /etc/network/interfaces
 
-    wpa_passphrase "$ssid" "$passphrase" > /etc/wpa_supplicant/wpa_supplicant.conf
+	wpa_passphrase "$ssid" "$passphrase" > $WIFI_CONFIG
 
 	systemctl restart network-manager
 }
@@ -182,14 +184,77 @@ function wifi_none {
 	echo '' >> /etc/network/interfaces
 	echo 'allow-hotplug wlan0' >> /etc/network/interfaces
 	echo 'iface wlan0 inet manual' >> /etc/network/interfaces
-    echo 'wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf' >> /etc/network/interfaces
+	echo "  wpa-roam $WIFI_CONFIG" >> /etc/network/interfaces
 	echo '' >> /etc/network/interfaces
 	echo 'iface default inet dhcp' >> /etc/network/interfaces
 
-    echo 'network={' > /etc/wpa_supplicant/wpa_supplicant.conf
+	echo 'network={' > $WIFI_CONFIG
-    echo "  ssid=\"${ssid}\"" >> /etc/wpa_supplicant/wpa_supplicant.conf
+	echo "  ssid=\"${ssid}\"" >> $WIFI_CONFIG
-    echo '  key_mgmt=NONE' >> /etc/wpa_supplicant/wpa_supplicant.conf
+	echo '  key_mgmt=NONE' >> $WIFI_CONFIG
-    echo '}' >> /etc/wpa_supplicant/wpa_supplicant.conf
+	echo '}' >> $WIFI_CONFIG
+
+	systemctl restart network-manager
+}
+
+function create_networks_from_file {
+	if [ ! -f $WIFI_FILE ]; then
+		return
+	fi
+
+	if [ ! -f /etc/network/interfaces_original ]; then
+		if ! grep -q "# wifi enabled" /etc/network/interfaces; then
+			cp /etc/network/interfaces /etc/network/interfaces_original
+		fi
+	fi
+
+	echo '# wifi enabled' > /etc/network/interfaces
+	echo 'auto lo' >> /etc/network/interfaces
+	echo 'iface lo inet loopback' >> /etc/network/interfaces
+	echo '' >> /etc/network/interfaces
+	echo 'allow-hotplug eth0' >> /etc/network/interfaces
+	echo 'iface eth0 inet dhcp' >> /etc/network/interfaces
+	echo '' >> /etc/network/interfaces
+	echo 'allow-hotplug wlan0' >> /etc/network/interfaces
+	echo 'iface wlan0 inet manual' >> /etc/network/interfaces
+	echo "  wpa-roam $WIFI_CONFIG" >> /etc/network/interfaces
+	echo '' >> /etc/network/interfaces
+	echo 'iface default inet dhcp' >> /etc/network/interfaces
+
+	# remove wpa_supplicant.conf if it exists
+	if [ -f $WIFI_CONFIG ]; then
+		rm -f $WIFI_CONFIG
+	fi
+
+	ctr=0
+	while read -r line
+	do
+		if [ ${#line} -gt 1 ]; then
+			if [[ "$line" != '#'* ]]; then
+				if [ $ctr -eq 0 ]; then
+					WIFI_SSID="$line"
+				fi
+				if [ $ctr -eq 1 ]; then
+					WIFI_TYPE="$line"
+					if [[ $WIFI_TYPE == $'none' || $WIFI_TYPE == $'None' ]]; then
+						echo 'network={' >> $WIFI_CONFIG
+						echo "  ssid=\"${WIFI_SSID}\"" >> $WIFI_CONFIG
+						echo '  key_mgmt=NONE' >> $WIFI_CONFIG
+						echo '}' >> $WIFI_CONFIG
+						ctr=0
+						continue
+					fi
+				fi
+				if [ $ctr -eq 2 ]; then
+					WIFI_PASSPHRASE="$line"
+					wpa_passphrase "$WIFI_SSID" "$WIFI_PASSPHRASE" >> $WIFI_CONFIG
+					ctr=0
+					continue
+				fi
+
+				ctr=$((ctr + 1))
+			fi
+		fi
+	done < $WIFI_FILE
 
 	systemctl restart network-manager
 }
@@ -238,6 +303,10 @@ do
 			shift
 			WIFI_HOTSPOT=${1}
 			;;
+		--config)
+			shift
+			WIFI_FILE=${1}
+			;;
 		*)
 			# unknown option
 			;;
@@ -245,6 +314,11 @@ do
 	shift
 done
 
+if [ -f $WIFI_FILE ]; then
+	create_networks_from_file
+	exit 0
+fi
+
 if [ ! $WIFI_SSID ]; then
 	echo $'No SSID given'
 	exit 1