Move aawgd.env to aawgd.conf.sh and source it early in boot process

- Rename /etc/aawgd.env to /etc/aawgd.conf.sh, make it a shell script
- Source aawgd.conf.sh early in boot process in /etc/init.d/rcS

Author: nisargjhaveri

aa_wireless_dongle/board/common/rootfs_overlay/etc/aawgd.conf.sh

@@ -0,0 +1,15 @@
+#!/bin/sh
+set -o allexport
+
+######## Common configuration options for Android Auto Wireless Dongle ########
+
+## Set the connection strategy to use
+## 0 - Dongle mode. Waits for both dongle and headunit bluetooth connections and then starts the wifi and usb connections.
+## 1 - Phone first (default). Waits for the phone bluetooth and wifi to connect first, and then starts the usb connection.
+## 2 - Usb first. Waits for the usb to connect first, and then starts the bluetooth and wifi connection with phone.
+AAWG_CONNECTION_STRATEGY=1
+
+
+## Override bluetooth name suffix
+## Set a custom suffix to replace unique id used in "WirelessAADongle-<suffix>" or "AndroidAuto-Dongle-<suffix>"
+#AAWG_UNIQUE_NAME_SUFFIX=

aa_wireless_dongle/board/common/rootfs_overlay/etc/aawgd.env

@@ -11,8 +11,12 @@ RETVAL=0
 
 case "$1" in
 	start)
+		if [ -z "$AAWG_CONF_SOURCED" ]; then
+			echo "Source /etc/aawgd.conf.sh"
+			source /etc/aawgd.conf.sh
+		fi
+
 		printf "Starting $DAEMON: "
-		export $(grep -v '^#' /etc/aawgd.env | xargs)
 		start-stop-daemon -S -b -q -m -p "$PIDFILE" -x "/usr/bin/$DAEMON"
 		RETVAL=$?
 		[ $RETVAL = 0 ] && echo "OK" || echo "FAIL"

aa_wireless_dongle/board/common/rootfs_overlay/etc/init.d/S93aawgd

@@ -4,6 +4,10 @@
 exec 1> >(logger -s -p INFO -t console 2>&1)
 exec 2> >(logger -s -p WARNING -t console)
 
+# Source aawgd configuration environment variables
+source /etc/aawgd.conf.sh
+export AAWG_CONF_SOURCED=1
+
 # Start all init scripts in /etc/init.d
 # executing them in numerical order.
 #

aa_wireless_dongle/board/common/rootfs_overlay/etc/init.d/rcS

@@ -2,7 +2,7 @@ image boot.vfat {
 	vfat {
 		label = "WirelessAA"
 		files = {
-			"aawgd.env",
+			"aawgd.conf.sh",
 #BOOT_FILES#
 		}
 	}

aa_wireless_dongle/board/raspberrypi/genimage.cfg.in

@@ -4,7 +4,7 @@ set -u
 set -e
 set -x
 
-mv ${TARGET_DIR}/etc/aawgd.env ${BINARIES_DIR}/aawgd.env
-ln -sf /boot/aawgd.env ${TARGET_DIR}/etc/aawgd.env
+mv ${TARGET_DIR}/etc/aawgd.conf.sh ${BINARIES_DIR}/aawgd.conf.sh
+ln -sf /boot/aawgd.conf.sh ${TARGET_DIR}/etc/aawgd.conf.sh
 
 source board/raspberrypi/post-build.sh