100 lines
2.9 KiB
Python
100 lines
2.9 KiB
Python
import re
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from aprslib.parsing import logger
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from aprslib.parsing.telemetry import _parse_telemetry_config
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__all__ = [
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'_parse_message',
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]
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# MESSAGE PACKET
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#
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# :ADDRESSEE:Message text ........{XXXXX Up to 5 char line number
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# :ADDRESSEE:ackXXXXX Ack for same line number
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# :ADDRESSEE:Message text ........{MM}AA Line# with REPLY ACK
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#
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# TELEMETRY MESSAGES
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#
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# :N3MIM:PARM.Battery,BTemp,AirTemp,Pres,Altude,Camra,Chute,Sun,10m,ATV
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# :N3MIM:UNIT.Volts,deg.F,deg.F,Mbar,Kfeet,Clik,OPEN!,on,on,high
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# :N3MIM:EQNS.0,2.6,0,0,.53,-32,3,4.39,49,-32,3,18,1,2,3
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# :N3MIM:BITS.10110101,PROJECT TITLE...
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def _parse_message(body):
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parsed = {}
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# the while loop is used to easily break out once a match is found
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while True:
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# try to match bulletin
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match = re.findall(r"^BLN([0-9])([a-z0-9_ \-]{5}):(.{0,67})", body, re.I)
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if match:
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bid, identifier, text = match[0]
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identifier = identifier.rstrip(' ')
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mformat = 'bulletin' if identifier == "" else 'group-bulletin'
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parsed.update({
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'format': mformat,
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'message_text': text.strip(' '),
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'bid': bid,
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'identifier': identifier
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})
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break
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# try to match announcement
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match = re.findall(r"^BLN([A-Z])([a-zA-Z0-9_ \-]{5}):(.{0,67})", body)
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if match:
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aid, identifier, text = match[0]
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identifier = identifier.rstrip(' ')
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parsed.update({
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'format': 'announcement',
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'message_text': text.strip(' '),
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'aid': aid,
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'identifier': identifier
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})
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break
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# validate addresse
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match = re.findall(r"^([a-zA-Z0-9_ \-]{9}):(.*)$", body)
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if not match:
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break
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addresse, body = match[0]
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parsed.update({'addresse': addresse.rstrip(' ')})
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# check if it's a telemetry configuration message
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body, result = _parse_telemetry_config(body)
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if result:
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parsed.update(result)
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break
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# regular message
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else:
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logger.debug("Packet is just a regular message")
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parsed.update({'format': 'message'})
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match = re.findall(r"^(ack|rej)\{([0-9]{1,5})$", body)
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if match:
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response, number = match[0]
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parsed.update({
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'response': response,
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'msgNo': number
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})
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else:
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body = body[0:70]
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match = re.findall(r"\{([0-9]{1,5})$", body)
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if match:
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msgid = match[0]
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body = body[:len(body) - 1 - len(msgid)]
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parsed.update({'msgNo': int(msgid)})
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parsed.update({'message_text': body.strip(' ')})
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break
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return ('', parsed)
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