"""
from datetime import datetime, timezone
+from enum import Enum
from inspect import isclass
from logging import getLogger
from struct import pack, unpack
log = getLogger("gps303")
+class Dir(Enum):
+ IN = 0 # Incoming, no response needed
+ INLINE = 2 # Birirectional, use `inline_response()`
+ EXT = 3 # Birirectional, use external responder
+ OUT = 4 # Outgoing, should not appear on input
+
+
class GPS303Pkt:
PROTO: int
- INLINE = True
+ DIR = Dir.INLINE # Most packets anticipate simple acknowledgement
def __init__(self, *args, **kwargs):
assert len(args) == 0
@classmethod
def make_packet(cls, payload):
assert isinstance(payload, bytes)
- length = len(payload) + 1
- if length > 6:
- length -= 6
+ length = len(payload) + 1 # plus proto byte
+ # if length > 6:
+ # length -= 6
return pack("BB", length, cls.PROTO) + payload
@classmethod
def inline_response(cls, packet):
- if cls.INLINE:
+ if cls.DIR is Dir.INLINE:
return cls.make_packet(b"")
else:
return None
class UNKNOWN(GPS303Pkt):
PROTO = 256 # > 255 is impossible in real packets
- INLINE = False
+ DIR = Dir.IN
class LOGIN(GPS303Pkt):
PROTO = 0x01
+ # Default response for ACK, can also respond with STOP_UPLOAD
@classmethod
def from_packet(cls, length, payload):
return self
-class SUPERVISION(GPS303Pkt): # Server sends supervision number status
+class SUPERVISION(GPS303Pkt):
PROTO = 0x05
- INLINE = False
+ DIR = Dir.OUT
- def response(self, supnum=0):
+ def response(self, status=0):
# 1: The device automatically answers Pickup effect
# 2: Automatically Answering Two-way Calls
# 3: Ring manually answer the two-way call
- return self.make_packet(pack("B", supnum))
+ return self.make_packet(pack("B", status))
class HEARTBEAT(GPS303Pkt):
@classmethod
def inline_response(cls, packet):
- return cls.make_packet(packet[2:8])
+ tup = datetime.utcnow().timetuple()
+ ttup = (tup[0] % 100,) + tup[1:6]
+ return cls.make_packet(pack("BBBBBB", *ttup))
class GPS_POSITIONING(_GPS_POSITIONING):
class STATUS(GPS303Pkt):
PROTO = 0x13
- INLINE = False
+ DIR = Dir.EXT
@classmethod
def from_packet(cls, length, payload):
class HIBERNATION(GPS303Pkt):
PROTO = 0x14
+ DIR = Dir.EXT
+
+ def response(self): # Server can send to send devicee to sleep
+ return self.make_packet(b"")
class RESET(GPS303Pkt): # Device sends when it got reset SMS
PROTO = 0x15
- INLINE = False
+ DIR = Dir.EXT
def response(self): # Server can send to initiate factory reset
return self.make_packet(b"")
class WHITELIST_TOTAL(GPS303Pkt): # Server sends to initiage sync (0x58)
PROTO = 0x16
- INLINE = False
+ DIR = Dir.OUT
def response(self, number=3): # Number of whitelist entries
return self.make_packet(pack("B", number))
@classmethod
def inline_response(cls, packet):
- return cls.make_packet(packet[2:8])
+ return cls.make_packet(
+ bytes.fromhex(datetime.utcnow().strftime("%y%m%d%H%M%S"))
+ )
class TIME(GPS303Pkt):
@classmethod
def inline_response(cls, packet):
- return pack(
- "!BBHBBBBB", 7, cls.PROTO, *datetime.utcnow().timetuple()[:6]
+ return cls.make_packet(
+ pack("!HBBBBB", *datetime.utcnow().timetuple()[:6])
)
class PROHIBIT_LBS(GPS303Pkt):
PROTO = 0x33
- INLINE = False
+ DIR = Dir.OUT
def response(self, status=1): # Server sent, 0-off, 1-on
return self.make_packet(pack("B", status))
-class LBS_SWITCH_TIMES(GPS303Pkt):
+class GPS_LBS_SWITCH_TIMES(GPS303Pkt):
PROTO = 0x34
- INLINE = False
+ DIR = Dir.OUT
def response(self):
- return self.make_packet(b"")
+ # Data is in packed decimal
+ # 00/01 - GPS on/off
+ # 00/01 - Don't set / Set upload period
+ # HHMMHHMM - Upload period
+ # 00/01 - LBS on/off
+ # 00/01 - Don't set / Set time of boot
+ # HHMM - Time of boot
+ # 00/01 - Don't set / Set time of shutdown
+ # HHMM - Time of shutdown
+ return self.make_packet(b"") # TODO
+
+
+class _SET_PHONE(GPS303Pkt):
+ DIR = Dir.OUT
+ def response(self, phone):
+ return self.make_packet(phone.encode())
-class REMOTE_MONITOR_PHONE(GPS303Pkt):
+
+class REMOTE_MONITOR_PHONE(_SET_PHONE):
PROTO = 0x40
- INLINE = False
-class SOS_PHONE(GPS303Pkt):
+class SOS_PHONE(_SET_PHONE):
PROTO = 0x41
- INLINE = False
-class DAD_PHONE(GPS303Pkt):
+class DAD_PHONE(_SET_PHONE):
PROTO = 0x42
- INLINE = False
-class MOM_PHONE(GPS303Pkt):
+class MOM_PHONE(_SET_PHONE):
PROTO = 0x43
- INLINE = False
class STOP_UPLOAD(GPS303Pkt): # Server response to LOGIN to thwart the device
PROTO = 0x44
+ DIR = Dir.OUT
+
+ def response(self):
+ return self.make_packet(b"")
+
+
+class GPS_OFF_PERIOD(GPS303Pkt):
+ PROTO = 0x46
+ DIR = Dir.OUT
+
+ def response(self, onoff=0, fm="0000", to="2359"):
+ return self.make_packet(
+ pack("B", onoff) + bytes.fromhex(fm) + bytes.fromhex(to)
+ )
+
+
+class DND_PERIOD(GPS303Pkt):
+ PROTO = 0x47
+ DIR = Dir.OUT
+
+ def response(
+ self, onoff=0, week=3, fm1="0000", to1="2359", fm2="0000", to2="2359"
+ ):
+ return self.make_packet(
+ pack("B", onoff)
+ + pack("B", week)
+ + bytes.fromhex(fm1)
+ + bytes.fromhex(to1)
+ + bytes.fromhex(fm2)
+ + bytes.fromhex(to2)
+ )
+
+
+class RESTART_SHUTDOWN(GPS303Pkt):
+ PROTO = 0x48
+ DIR = Dir.OUT
+
+ def response(self, flag=0):
+ # 1 - restart
+ # 2 - shutdown
+ return self.make_packet(pack("B", flag))
+
+
+class DEVICE(GPS303Pkt):
+ PROTO = 0x49
+ DIR = Dir.OUT
+
+ def response(self, flag=0):
+ # 0 - Stop looking for equipment
+ # 1 - Start looking for equipment
+ return self.make_packet(pack("B", flag))
+
+
+class ALARM_CLOCK(GPS303Pkt):
+ PROTO = 0x50
+ DIR = Dir.OUT
+
+ def response(self, alarms=((0, "0000"), (0, "0000"), (0, "0000"))):
+ return b"".join(
+ pack("B", day) + bytes.fromhex(tm) for day, tm in alarms
+ )
class STOP_ALARM(GPS303Pkt):
PROTO = 0x56
+ @classmethod
+ def from_packet(cls, length, payload):
+ self = super().from_packet(length, payload)
+ self.flag = payload[0]
+
class SETUP(GPS303Pkt):
PROTO = 0x57
- INLINE = False
+ DIR = Dir.EXT
def response(
self,
class WIFI_POSITIONING(_WIFI_POSITIONING):
PROTO = 0x69
- INLINE = False
+ DIR = Dir.EXT
def response(self, lat=None, lon=None):
if lat is None or lon is None:
class MANUAL_POSITIONING(GPS303Pkt):
PROTO = 0x80
- INLINE = False
+ DIR = Dir.EXT
+
+ @classmethod
+ def from_packet(cls, length, payload):
+ self = super().from_packet(length, payload)
+ self.flag = payload[0]
+ self.reason = {
+ 1: "Incorrect time",
+ 2: "LBS less",
+ 3: "WiFi less",
+ 4: "LBS search > 3 times",
+ 5: "Same LBS and WiFi data",
+ 6: "LBS prohibited, WiFi absent",
+ 7: "GPS spacing < 50 m",
+ }.get(self.flag, "Unknown")
+
+ def response(self):
+ return self.make_packet(b"")
class BATTERY_CHARGE(GPS303Pkt):
class POSITION_UPLOAD_INTERVAL(GPS303Pkt):
PROTO = 0x98
- INLINE = False
+ DIR = Dir.EXT
@classmethod
def from_packet(cls, length, payload):
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