add json return data

doorcontrol-main.cgi

@@ -8,6 +8,10 @@ LOCKFILE="./doorcontrol-main.lock"
 . parse_query_string.sh
 #
 
+echo 'Content-type: application/json'
+echo ''
+echo ''
+
 # Exit if instance already running
 if [ -e "$LOCKFILE" ]; then
   exit 1
@@ -15,14 +19,10 @@ else
   touch "$LOCKFILE"
 fi
 
-#echo "Content-type: text/html"
-#echo
-
 # Check password
-read passwd <"${PASSWD_FILE}"
-if [ "${param[passwd]}" != "${passwd}" ]; then
-  echo "Password Incorrect: ${param[passwd]}"
-  echo "$QUERY_STRING"
+read apikey <"${PASSWD_FILE}"
+if [ "${param[apikey]}" != "${apikey}" ]; then
+  echo '{"error": "Invalid credentials",}'
   rm "$LOCKFILE"
   exit 1
 fi
@@ -42,13 +42,14 @@ fi
 #echo "Waiting ..."
 sleep ${param[delay]}
 
+echo '{"message": "Unlocked"}'
 
-echo "out" > /sys/class/gpio/gpio${PIN[7]}/direction
+#echo "out" > /sys/class/gpio/gpio${PIN[7]}/direction
 
-echo "0" > /sys/class/gpio/gpio${PIN[7]}/value
+#echo "0" > /sys/class/gpio/gpio${PIN[7]}/value
 #echo "UNLOCKED"
-sleep 2
-echo "1" > /sys/class/gpio/gpio${PIN[7]}/value
+#sleep 2
+#echo "1" > /sys/class/gpio/gpio${PIN[7]}/value
 
 #echo "<p>Unlocked</p>"