Added ID validation

validate.py

@@ -3,6 +3,7 @@
 import sys
 from datetime import datetime
 import time
+import json
 import RPi.GPIO as IO
 import zmq
 
@@ -51,8 +52,12 @@ def read_loop():
 	socket = context.socket(zmq.SUB)
 	socket.setsockopt(zmq.SUBSCRIBE, "")
 	socket.connect(SCANSERVADDRESS)
-	# TODO: Open the access database
-	
+	# Open the access database
+	access_raw = open("access.json").read()
+	try:
+		access = json.loads(access_raw)
+	except:
+		raise SystemExit("Could not load access file!")
 	# Initialize the PWM pin for opening the door
 	pwm_pin = setup_pwm()
 	# Open the log file in append mode
@@ -63,21 +68,23 @@ def read_loop():
 	while True:
 		# Read in the ID
 		scanned_id = socket.recv()
-		# TODO: Check if the ID is authorized
-		authorized = True
-		
-
+		# Determine ID authorization
+		authorized = id in access and "authorized" in access[id] and access[id]["authorized"]
+		user = access[id]["user"] if id in access and "user" in access[id] else "unknown id"
 		# If the user is not authorized, deny access
 		if not authorized:
-			s = timestamped("##### denied\n")
+			s = timestamped("Denied {} ({})\n".format(id, user))
 			log_file.write(s)
+			print s,
 		# If the user is authorized, perform the unlock procedure
 		else:
-			s = timestamped("##### <Username> validated\n")
+			s = timestamped("Validated {} {}\n".format(id, user))
 			log_file.write(s)
 			print s,
 			# TODO: Play open tone
-			# TODO: Run unlock procedure
+			if "sound" in access[id]:
+				pass
+			# Run unlock procedure
 			unlock_door(pwm_pin)
 
 if __name__ == "__main__":