def beacon_thread():
while True:
print "Beacon thread: Waiting %s minutes before sending another beacon" % config.get("APRS encoding", "beacon_period")
time.sleep( float( config.get("APRS encoding", "beacon_period") )*60 )
aprs_transmit.send_beacon(config)
def process_aprs_message(config, source_callsign, source_ssid, data):
#Read list of authorised users
#Note: When reading a list from a config file, the key is
#made lower case, while the value is kept intact
list_of_users = config.options("Authorised users")
#All messages containing a message ID needs to be acked ackording to
#the spec, APRS101, p71
msg_id_index = data.rfind('{')
if(msg_id_index != -1):
aprs_transmit.send_packet(config, ":"+(source_callsign+"-"+source_ssid).ljust(9)+":ack"+data[(msg_id_index+1):])
#Now strip the message id
data = data[:msg_id_index]
#Remove the callsign from the data
data = data[11:]
#If the message is in the format ":_________:ack#####" it is an ACK
#for a message we sent. We can ignore this message for now.
#TODO: mark the packet as acked in a queue of unacked sent messages
if (data.lower().find("ack") == 0):
return
if (config.get("Authorisation","enable_auth") == "True"):
#If unauthorised, ignore message further.
if(source_callsign.lower() in list_of_users):
if (config.get("Authorisation","logauth") == "True"):
file = open(config.get("Authorisation","authlogfilelocation"), 'a')
file.write("AUTHED USER: "******"-"+source_ssid+" MSG: "+data+"\n")
file.close()
else:
if (config.get("Authorisation","logauth") == "True"):
file = open(config.get("Authorisation","authlogfilelocation"), 'a')
file.write("UNAUTHED USER: "******"-"+source_ssid+" MSG: "+data+"\n")
file.close()
#Consider the following line very carefully. Do you really want to send messages on the request of any user?
#aprs_transmit.send_message(config, ":"+(source_callsign+"-"+source_ssid).ljust(9)+":Invalid user or password")
return
if (config.get("Authorisation","require_password") == "True"):
#TODO: Use the password in the config file to do authentication
user_password = config.get("Authorised users",source_callsign.lower())
if (data.find(user_password) != -1):
data = data.strip(user_password)
data = data.strip()
else:
aprs_transmit.send_message(config, ":"+(source_callsign+"-"+source_ssid).ljust(9)+":Invalid user or password")
return
#Make all caps to be case insensitive
data = data.upper()
if(data == ""):
print "Empty message received."
return
#If the message is "GET","get","G" or "g", send a packet with the current
#GPIO states.
if(data.find("GET") == 0 or data.find('G') == 0):
aprs_transmit.send_current_state(config,source_callsign, source_ssid)
#If the message is "SET A1", "S a1", "s A1" or "set a1,b0...", switch the GPIO's and then send
#the current state.
elif(data.find("SET") == 0 or data.find('S') == 0):
data = data.strip("SET")
data = data.strip("S")
data = data.strip()
ports = data.split(",")
success = 1
for port in ports:
# ERROR codes:
# 1=success, 2=invalid gpio, 3=not an output, 4=invalid state, 5=invalid syntax
if (len(port)==2):
return_code = gpio_management.set_output(config,port[0],port[1])
if(return_code == 1):
print "Port successfully set: "+port
else:
success = return_code
print "Port not set: "+port
else:
success = 5
print "Invalid syntax for a port"
if(success == 1):
aprs_transmit.send_current_state(config, source_callsign, source_ssid)
elif(success == 2):
aprs_transmit.send_message(config, ":"+(source_callsign+"-"+source_ssid).ljust(9)+":Invalid GPIO specified")
elif(success == 3):
aprs_transmit.send_message(config, ":"+(source_callsign+"-"+source_ssid).ljust(9)+":GPIO not an output")
elif(success == 4):
aprs_transmit.send_message(config, ":"+(source_callsign+"-"+source_ssid).ljust(9)+":Invalid sate specified")
elif(success == 5):
aprs_transmit.send_message(config, ":"+(source_callsign+"-"+source_ssid).ljust(9)+":Invalid syntax")
#If the message is "B","b","BEACON","BeaCon",.. send a beacon now.
elif(data.find("BEACON") == 0 or data.find('B') == 0):
aprs_transmit.send_beacon(config)
