summaryrefslogblamecommitdiffstats
path: root/source/ProtocolRecognizer.cpp
blob: d0a3f4637307d7b1694b4ea620506d792b5f178c (plain) (tree)
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
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492












































                                                                                                              






























































































































































































































































































































































































































































                                                                                                                                                                                       
                      



























                                                                            

// ProtocolRecognizer.cpp

// Implements the cProtocolRecognizer class representing the meta-protocol that recognizes possibly multiple 
// protocol versions and redirects everything to them

#include "Globals.h"

#include "ProtocolRecognizer.h"
#include "Protocol125.h"
#include "Protocol132.h"
#include "cClientHandle.h"
#include "cRoot.h"
#include "cWorld.h"
#include "cChatColor.h"





cProtocolRecognizer::cProtocolRecognizer(cClientHandle * a_Client) :
	super(a_Client),
	m_Protocol(NULL),
	m_Buffer(512)
{
}





void cProtocolRecognizer::DataReceived(const char * a_Data, int a_Size)
{
	if (m_Protocol == NULL)
	{
		if (!m_Buffer.Write(a_Data, a_Size))
		{
			m_Client->Kick("Unsupported protocol version");
			return;
		}
		
		if (!TryRecognizeProtocol())
		{
			return;
		}

		// The protocol has just been recognized, dump the whole m_Buffer contents into it for parsing:
		AString Dump;
		m_Buffer.ResetRead();
		m_Buffer.ReadAll(Dump);
		m_Protocol->DataReceived(Dump.data(), Dump.size());
	}
	else
	{
		m_Protocol->DataReceived(a_Data, a_Size);
	}
}





void cProtocolRecognizer::SendBlockAction(int a_BlockX, int a_BlockY, int a_BlockZ, char a_Byte1, char a_Byte2)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendBlockAction(a_BlockX, a_BlockY, a_BlockZ, a_Byte1, a_Byte2);
}





void cProtocolRecognizer::SendBlockChange(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendBlockChange(a_BlockX, a_BlockY, a_BlockZ, a_BlockType, a_BlockMeta);
}





void cProtocolRecognizer::SendBlockChanges(int a_ChunkX, int a_ChunkZ, const sSetBlockVector & a_Changes)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendBlockChanges(a_ChunkX, a_ChunkZ, a_Changes);
}





void cProtocolRecognizer::SendChat(const AString & a_Message)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendChat(a_Message);
}





void cProtocolRecognizer::SendChunkData(int a_ChunkX, int a_ChunkZ, cChunkDataSerializer & a_Serializer)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendChunkData(a_ChunkX, a_ChunkZ, a_Serializer);
}





void cProtocolRecognizer::SendCollectPickup(const cPickup & a_Pickup, const cPlayer & a_Player)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendCollectPickup(a_Pickup, a_Player);
}





void cProtocolRecognizer::SendDestroyEntity(const cEntity & a_Entity)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendDestroyEntity(a_Entity);
}





void cProtocolRecognizer::SendDisconnect(const AString & a_Reason)
{
	if (m_Protocol != NULL)
	{
		m_Protocol->SendDisconnect(a_Reason);
	}
	else
	{
		// This is used when the client sends a server-ping, respond with the default packet:
		WriteByte  ((char)0xff);  // PACKET_DISCONNECT
		WriteString(a_Reason);
	}
}





void cProtocolRecognizer::SendEntHeadLook(const cEntity & a_Entity)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendEntHeadLook(a_Entity);
}





void cProtocolRecognizer::SendEntLook(const cEntity & a_Entity)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendEntLook(a_Entity);
}





void cProtocolRecognizer::SendEntityEquipment(const cEntity & a_Entity, short a_SlotNum, const cItem & a_Item)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendEntityEquipment(a_Entity, a_SlotNum, a_Item);
}





void cProtocolRecognizer::SendEntityStatus(const cEntity & a_Entity, char a_Status)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendEntityStatus(a_Entity, a_Status);
}





void cProtocolRecognizer::SendGameMode(eGameMode a_GameMode)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendGameMode(a_GameMode);
}





void cProtocolRecognizer::SendHealth(void)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendHealth();
}





void cProtocolRecognizer::SendInventoryProgress(char a_WindowID, short a_Progressbar, short a_Value)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendInventoryProgress(a_WindowID, a_Progressbar, a_Value);
}





void cProtocolRecognizer::SendInventorySlot(char a_WindowID, short a_SlotNum, const cItem & a_Item)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendInventorySlot(a_WindowID, a_SlotNum, a_Item);
}





void cProtocolRecognizer::SendKeepAlive(int a_PingID)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendKeepAlive(a_PingID);
}





void cProtocolRecognizer::SendLogin(const cPlayer & a_Player)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendLogin(a_Player);
}





void cProtocolRecognizer::SendMetadata(const cEntity & a_Entity)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendMetadata(a_Entity);
}





void cProtocolRecognizer::SendPickupSpawn(const cPickup & a_Pickup)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendPickupSpawn(a_Pickup);
}





void cProtocolRecognizer::SendPlayerAnimation(const cPlayer & a_Player, char a_Animation)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendPlayerAnimation(a_Player, a_Animation);
}





void cProtocolRecognizer::SendPlayerListItem(const cPlayer & a_Player, bool a_IsOnline)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendPlayerListItem(a_Player, a_IsOnline);
}





void cProtocolRecognizer::SendPlayerMoveLook(void)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendPlayerMoveLook();
}





void cProtocolRecognizer::SendPlayerPosition(void)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendPlayerPosition();
}





void cProtocolRecognizer::SendPlayerSpawn(const cPlayer & a_Player)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendPlayerSpawn(a_Player);
}





void cProtocolRecognizer::SendEntRelMove(const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendEntRelMove(a_Entity, a_RelX, a_RelY, a_RelZ);
}





void cProtocolRecognizer::SendEntRelMoveLook(const cEntity & a_Entity, char a_RelX, char a_RelY, char a_RelZ)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendEntRelMoveLook(a_Entity, a_RelX, a_RelY, a_RelZ);
}





void cProtocolRecognizer::SendRespawn(void)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendRespawn();
}





void cProtocolRecognizer::SendSpawnMob(const cMonster & a_Mob)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendSpawnMob(a_Mob);
}





void cProtocolRecognizer::SendTeleportEntity(const cEntity & a_Entity)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendTeleportEntity(a_Entity);
}





void cProtocolRecognizer::SendThunderbolt(int a_BlockX, int a_BlockY, int a_BlockZ)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendThunderbolt(a_BlockX, a_BlockY, a_BlockZ);
}





void cProtocolRecognizer::SendTimeUpdate(Int64 a_WorldTime)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendTimeUpdate(a_WorldTime);
}





void cProtocolRecognizer::SendUnloadChunk(int a_ChunkX, int a_ChunkZ)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendUnloadChunk(a_ChunkX, a_ChunkZ);
}





void cProtocolRecognizer::SendUpdateSign(int a_BlockX, int a_BlockY, int a_BlockZ, const AString & a_Line1, const AString & a_Line2, const AString & a_Line3, const AString & a_Line4)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendUpdateSign(a_BlockX, a_BlockY, a_BlockZ, a_Line1, a_Line2, a_Line3, a_Line4);
}





void cProtocolRecognizer::SendWeather(eWeather a_Weather)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendWeather(a_Weather);
}





void cProtocolRecognizer::SendWholeInventory(const cInventory & a_Inventory)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendWholeInventory(a_Inventory);
}





void cProtocolRecognizer::SendWholeInventory(const cWindow & a_Window)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendWholeInventory(a_Window);
}





void cProtocolRecognizer::SendWindowClose(char a_WindowID)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendWindowClose(a_WindowID);
}





void cProtocolRecognizer::SendWindowOpen(char a_WindowID, char a_WindowType, const AString & a_WindowTitle, char a_NumSlots)
{
	ASSERT(m_Protocol != NULL);
	m_Protocol->SendWindowOpen(a_WindowID, a_WindowType, a_WindowTitle, a_NumSlots);
}





void cProtocolRecognizer::SendData(const char * a_Data, int a_Size)
{
	// This is used only when handling the server ping
	m_Client->SendData(a_Data, a_Size);
}





bool cProtocolRecognizer::TryRecognizeProtocol(void)
{
	// The first packet should be a Handshake, 0x02:
	unsigned char PacketType;
	if (!m_Buffer.ReadByte(PacketType))
	{
		return false;
	}
	switch (PacketType)
	{
		case 0x02: break;  // Handshake, continue recognizing
		case 0xfe: HandleServerPing(); return false;
		default: return false;
	}
	
	// 1.3.2 starts with 0x02 0x39 <name-length-short>
	// 1.2.5 starts with 0x02 <name-length-short> and name is expected to less than 0x3900 long :)
	char ch;
	if (!m_Buffer.ReadChar(ch))
	{
		return false;
	}
	if (ch == 39)
	{
		m_Protocol = new cProtocol132(m_Client);
		return true;
	}
	m_Protocol = new cProtocol125(m_Client);
	return true;
}





void cProtocolRecognizer::HandleServerPing(void)
{
	AString Reply;
	Printf(Reply, "%s%s%i%s%i", 
		cRoot::Get()->GetDefaultWorld()->GetDescription().c_str(), 
		cChatColor::Delimiter.c_str(), 
		cRoot::Get()->GetDefaultWorld()->GetNumPlayers(),
		cChatColor::Delimiter.c_str(), 
		cRoot::Get()->GetDefaultWorld()->GetMaxPlayers()
	);
	m_Client->Kick(Reply.c_str());
}