1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
|
from typing import NamedTuple, List, Any
from enum import Enum
from tasd.constants import PacketType
from tasd.utils import *
class _VariableType(Enum):
STRING_EOP = 0x00
STRING_PLEN = 0x01
STRING_PEXP = 0x02
BYTES_EOP = 0x10
BYTES_PLEN = 0x11
BYTES_PEXP = 0x12
INT_8 = 0x20
INT_16 = 0x21
INT_24 = 0x22
INT_32 = 0x23
INT_64 = 0x24
INT_N = 0x25
UINT_8 = 0x30
UINT_16 = 0x31
UINT_24 = 0x32
UINT_32 = 0x33
UINT_64 = 0x34
UINT_N = 0x35
BOOL = 0x40
LIST_UINT_64 = 0x50
class _VariableDefinition(NamedTuple):
name: str
type: _VariableType
default: Any
class _EnumDefinition(NamedTuple):
name: str
enum: Enum
class _TASDPacket():
@classmethod
def from_bytes(cls, buffer: bytes):
self = cls()
index = 0
for variable in cls._variables:
match variable.type:
case _VariableType.STRING_EOP:
setattr(self, variable.name, readString(buffer, index, len(buffer) - index))
index = len(buffer)
case _VariableType.STRING_PLEN:
plen = readInt8(buffer, index)
index += 1
setattr(self, variable.name, readString(buffer, index, plen))
index += plen
case _VariableType.STRING_PEXP:
pexp = readInt8(buffer, index)
index += 1
plen = readIntN(buffer, index, pexp)
index += pexp
setattr(self, variable.name, readString(buffer, index, plen))
index += plen
case _VariableType.BYTES_EOP:
setattr(self, variable.name, readBytes(buffer, index, len(buffer)))
index = len(buffer)
case _VariableType.BYTES_PLEN:
plen = readInt8(buffer, index)
index += 1
setattr(self, variable.name, readBytes(buffer, index, plen))
index += plen
case _VariableType.BYTES_PEXP:
pexp = readInt8(buffer, index)
index += 1
plen = readIntN(buffer, index, pexp)
index += pexp
setattr(self, variable.name, readBytes(buffer, index, plen))
index += plen
case _VariableType.INT_8:
setattr(self, variable.name, readInt8(buffer, index))
index += 1
case _VariableType.INT_16:
setattr(self, variable.name, readInt16(buffer, index))
index += 2
case _VariableType.INT_24:
setattr(self, variable.name, readInt24(buffer, index))
index += 3
case _VariableType.INT_32:
setattr(self, variable.name, readInt32(buffer, index))
index += 4
case _VariableType.INT_64:
setattr(self, variable.name, readInt64(buffer, index))
index += 8
case _VariableType.INT_N:
pexp = readInt8(buffer, index)
index += 1
setattr(self, variable.name, readIntN(buffer, index, pexp))
index += pexp
case _VariableType.UINT_8:
setattr(self, variable.name, readUint8(buffer, index))
index += 1
case _VariableType.UINT_16:
setattr(self, variable.name, readUint16(buffer, index))
index += 2
case _VariableType.UINT_24:
setattr(self, variable.name, readUint24(buffer, index))
index += 3
case _VariableType.UINT_32:
setattr(self, variable.name, readUint32(buffer, index))
index += 4
case _VariableType.UINT_64:
setattr(self, variable.name, readUint64(buffer, index))
index += 8
case _VariableType.UINT_N:
pexp = readUint8(buffer, index)
index += 1
setattr(self, variable.name, readUintN(buffer, index, pexp))
index += pexp
case _VariableType.BOOL:
setattr(self, variable.name, readBoolean(buffer, index))
index += 1
case _VariableType.LIST_UINT_64:
l = list()
while index < len(buffer):
l.append(readUint64(buffer, index))
index += 8
setattr(self, variable.name, l)
case _:
raise ValueError("Unknown Variable Type", variable)
return self
def size(self):
size = 0
for variable in self._variables:
value = getattr(self, variable.name)
match variable.type:
case _VariableType.STRING_EOP:
size += sizeString(value)
case _VariableType.STRING_PLEN:
size += ( 1 + sizeString(value) )
case _VariableType.STRING_PEXP:
vsize = sizeString(value)
size += ( 1 + minUint(vsize) + vsize )
case _VariableType.BYTES_EOP:
size += len(value)
case _VariableType.BYTES_PLEN:
size += ( 1 + len(value) )
case _VariableType.BYTES_PEXP:
vsize = len(value)
size += ( 1 + minUint(vsize) + vsize )
case _VariableType.INT_8:
size += 1
case _VariableType.INT_16:
size += 2
case _VariableType.INT_24:
size += 3
case _VariableType.INT_32:
size += 4
case _VariableType.INT_64:
size += 8
case _VariableType.INT_N:
size += minInt(value)
case _VariableType.UINT_8:
size += 1
case _VariableType.UINT_16:
size += 2
case _VariableType.UINT_24:
size += 3
case _VariableType.UINT_32:
size += 4
case _VariableType.UINT_64:
size += 8
case _VariableType.UINT_N:
size += minUint(value)
case _VariableType.BOOL:
size += 1
case _VariableType.LIST_UINT_64:
size += ( 8 * len(value) )
case _:
raise ValueError("Unknown Variable Type", variable)
return size
def to_bytes(self):
buffer = bytearray(self.size())
index = 0
for variable in self._variables:
value = getattr(self, variable.name)
match variable.type:
case _VariableType.STRING_EOP:
writeString(value, buffer, index)
index += sizeString(value)
case _VariableType.STRING_PLEN:
plen = sizeString(value)
writeUint8(plen, buffer, index)
index += 1
writeString(value, buffer, index)
index += plen
case _VariableType.STRING_PEXP:
plen = sizeString(value)
pexp = minUint(plen)
writeUint8(pexp, buffer, index)
index += 1
writeUintN(plen, buffer, index, pexp)
index += pexp
writeString(value, buffer, index)
index += plen
case _VariableType.BYTES_EOP:
writeBytes(value, buffer, index)
index += len(value)
case _VariableType.BYTES_PLEN:
plen = len(value)
writeUint8(plen, buffer, index)
index += 1
writeBytes(value, buffer, index)
index += plen
case _VariableType.BYTES_PEXP:
plen = len(value)
pexp = minUint(plen)
writeUint8(pexp, buffer, index)
index += 1
writeUintN(plen, buffer, index, pexp)
index += pexp
writeBytes(value, buffer, index)
index += plen
case _VariableType.INT_8:
writeInt8(value, buffer, index)
index += 1
case _VariableType.INT_16:
writeInt16(value, buffer, index)
index += 2
case _VariableType.INT_24:
writeInt24(value, buffer, index)
index += 3
case _VariableType.INT_32:
writeInt32(value, buffer, index)
index += 4
case _VariableType.INT_64:
writeInt64(value, buffer, index)
index += 8
case _VariableType.INT_N:
pexp = minInt(value)
writeUint8(pexp, buffer, index)
index += 1
writeIntN(value, buffer, index, pexp)
index += pexp
case _VariableType.UINT_8:
writeUint8(value, buffer, index)
index += 1
case _VariableType.UINT_16:
writeUint16(value, buffer, index)
index += 2
case _VariableType.UINT_24:
writeUint24(value, buffer, index)
index += 3
case _VariableType.UINT_32:
writeUint32(value, buffer, index)
index += 4
case _VariableType.UINT_64:
writeUint64(value, buffer, index)
index += 8
case _VariableType.UINT_N:
pexp = minInt(value)
writeUint8(pexp, buffer, index)
index += 1
writeUintN(value, buffer, index, pexp)
index += pexp
case _VariableType.BOOL:
writeBoolean(value, buffer, index)
index += 1
case _VariableType.LIST_UINT_64:
for val in value:
writeUint64(val, buffer, index)
index += 8
case _:
raise ValueError("Unknown Variable Type", variable)
return buffer
def __repr__(self):
return f"{self._name}({', '.join(f'{var.name}={getattr(self, var.name)}' for var in self._variables)})"
_lookup_table = dict()
def _TASDPacketFactory(name: str, key: int, variables: List[_VariableDefinition] = [], enums: List[_EnumDefinition] = []):
class Packet(_TASDPacket):
_variables = variables
_key = key
_name = name
def __init__(self, **kwargs):
for variable in Packet._variables:
setattr(self, variable.name, kwargs.get(variable.name, variable.default))
for enum in enums:
setattr(Packet, enum.name, enum.enum)
_lookup_table[key] = Packet
Packet.__name__ = name
Packet.__qualname__ = name
return Packet
def _build_unknown_packet(key):
_UnknownPacket = _TASDPacketFactory(f"UnknownPacket_{key:04x}", key, [ _VariableDefinition("data", _VariableType.BYTES_EOP, b"") ])
return _UnknownPacket
def lookup_packet(key: int) -> _TASDPacket:
packet = _lookup_table.get(key, None)
if packet == None:
packet = _build_unknown_packet(key)
return packet
|
