-
Notifications
You must be signed in to change notification settings - Fork 6.1k
/
AuthSocket.cpp
1213 lines (1017 loc) · 41.5 KB
/
AuthSocket.cpp
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
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
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
* Copyright (C) 2008-2014 TrinityCore <http://www.trinitycore.org/>
* Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <algorithm>
#include <openssl/md5.h>
#include "Common.h"
#include "Database/DatabaseEnv.h"
#include "ByteBuffer.h"
#include "Configuration/Config.h"
#include "Log.h"
#include "RealmList.h"
#include "AuthSocket.h"
#include "AuthCodes.h"
#include "TOTP.h"
#include "SHA1.h"
#include "openssl/crypto.h"
#define ChunkSize 2048
enum eAuthCmd
{
AUTH_LOGON_CHALLENGE = 0x00,
AUTH_LOGON_PROOF = 0x01,
AUTH_RECONNECT_CHALLENGE = 0x02,
AUTH_RECONNECT_PROOF = 0x03,
REALM_LIST = 0x10,
XFER_INITIATE = 0x30,
XFER_DATA = 0x31,
XFER_ACCEPT = 0x32,
XFER_RESUME = 0x33,
XFER_CANCEL = 0x34
};
enum eStatus
{
STATUS_CONNECTED = 0,
STATUS_AUTHED
};
// GCC have alternative #pragma pack(N) syntax and old gcc version not support pack(push, N), also any gcc version not support it at some paltform
#if defined(__GNUC__)
#pragma pack(1)
#else
#pragma pack(push, 1)
#endif
typedef struct AUTH_LOGON_CHALLENGE_C
{
uint8 cmd;
uint8 error;
uint16 size;
uint8 gamename[4];
uint8 version1;
uint8 version2;
uint8 version3;
uint16 build;
uint8 platform[4];
uint8 os[4];
uint8 country[4];
uint32 timezone_bias;
uint32 ip;
uint8 I_len;
uint8 I[1];
} sAuthLogonChallenge_C;
typedef struct AUTH_LOGON_PROOF_C
{
uint8 cmd;
uint8 A[32];
uint8 M1[20];
uint8 crc_hash[20];
uint8 number_of_keys;
uint8 securityFlags; // 0x00-0x04
} sAuthLogonProof_C;
typedef struct AUTH_LOGON_PROOF_S
{
uint8 cmd;
uint8 error;
uint8 M2[20];
uint32 unk1;
uint32 unk2;
uint16 unk3;
} sAuthLogonProof_S;
typedef struct AUTH_LOGON_PROOF_S_OLD
{
uint8 cmd;
uint8 error;
uint8 M2[20];
uint32 unk2;
} sAuthLogonProof_S_Old;
typedef struct AUTH_RECONNECT_PROOF_C
{
uint8 cmd;
uint8 R1[16];
uint8 R2[20];
uint8 R3[20];
uint8 number_of_keys;
} sAuthReconnectProof_C;
typedef struct XFER_INIT
{
uint8 cmd; // XFER_INITIATE
uint8 fileNameLen; // strlen(fileName);
uint8 fileName[5]; // fileName[fileNameLen]
uint64 file_size; // file size (bytes)
uint8 md5[MD5_DIGEST_LENGTH]; // MD5
} XFER_INIT;
typedef struct XFER_DATA
{
uint8 opcode;
uint16 data_size;
uint8 data[ChunkSize];
} XFER_DATA_STRUCT;
typedef struct AuthHandler
{
eAuthCmd cmd;
uint32 status;
bool (AuthSocket::*handler)(void);
} AuthHandler;
// GCC have alternative #pragma pack() syntax and old gcc version not support pack(pop), also any gcc version not support it at some paltform
#if defined(__GNUC__)
#pragma pack()
#else
#pragma pack(pop)
#endif
// Launch a thread to transfer a patch to the client
class PatcherRunnable: public ACE_Based::Runnable
{
public:
PatcherRunnable(class AuthSocket*);
void run();
private:
AuthSocket* mySocket;
};
typedef struct PATCH_INFO
{
uint8 md5[MD5_DIGEST_LENGTH];
} PATCH_INFO;
// Caches MD5 hash of client patches present on the server
class Patcher
{
public:
typedef std::map<std::string, PATCH_INFO*> Patches;
~Patcher();
Patcher();
Patches::const_iterator begin() const { return _patches.begin(); }
Patches::const_iterator end() const { return _patches.end(); }
void LoadPatchMD5(char*);
bool GetHash(char * pat, uint8 mymd5[16]);
private:
void LoadPatchesInfo();
Patches _patches;
};
const AuthHandler table[] =
{
{ AUTH_LOGON_CHALLENGE, STATUS_CONNECTED, &AuthSocket::_HandleLogonChallenge },
{ AUTH_LOGON_PROOF, STATUS_CONNECTED, &AuthSocket::_HandleLogonProof },
{ AUTH_RECONNECT_CHALLENGE, STATUS_CONNECTED, &AuthSocket::_HandleReconnectChallenge},
{ AUTH_RECONNECT_PROOF, STATUS_CONNECTED, &AuthSocket::_HandleReconnectProof },
{ REALM_LIST, STATUS_AUTHED, &AuthSocket::_HandleRealmList },
{ XFER_ACCEPT, STATUS_CONNECTED, &AuthSocket::_HandleXferAccept },
{ XFER_RESUME, STATUS_CONNECTED, &AuthSocket::_HandleXferResume },
{ XFER_CANCEL, STATUS_CONNECTED, &AuthSocket::_HandleXferCancel }
};
#define AUTH_TOTAL_COMMANDS 8
// Holds the MD5 hash of client patches present on the server
Patcher PatchesCache;
// Constructor - set the N and g values for SRP6
AuthSocket::AuthSocket(RealmSocket& socket) :
pPatch(NULL), socket_(socket), _authed(false), _build(0),
_expversion(0), _accountSecurityLevel(SEC_PLAYER)
{
N.SetHexStr("894B645E89E1535BBDAD5B8B290650530801B18EBFBF5E8FAB3C82872A3E9BB7");
g.SetDword(7);
}
// Close patch file descriptor before leaving
AuthSocket::~AuthSocket(void) { }
// Accept the connection
void AuthSocket::OnAccept(void)
{
TC_LOG_DEBUG("server.authserver", "'%s:%d' Accepting connection", socket().getRemoteAddress().c_str(), socket().getRemotePort());
}
void AuthSocket::OnClose(void)
{
TC_LOG_DEBUG("server.authserver", "AuthSocket::OnClose");
}
// Read the packet from the client
void AuthSocket::OnRead()
{
#define MAX_AUTH_LOGON_CHALLENGES_IN_A_ROW 3
uint32 challengesInARow = 0;
uint8 _cmd;
while (1)
{
if (!socket().recv_soft((char *)&_cmd, 1))
return;
if (_cmd == AUTH_LOGON_CHALLENGE)
{
++challengesInARow;
if (challengesInARow == MAX_AUTH_LOGON_CHALLENGES_IN_A_ROW)
{
TC_LOG_WARN("server.authserver", "Got %u AUTH_LOGON_CHALLENGE in a row from '%s', possible ongoing DoS", challengesInARow, socket().getRemoteAddress().c_str());
socket().shutdown();
return;
}
}
size_t i;
// Circle through known commands and call the correct command handler
for (i = 0; i < AUTH_TOTAL_COMMANDS; ++i)
{
if ((uint8)table[i].cmd == _cmd && (table[i].status == STATUS_CONNECTED || (_authed && table[i].status == STATUS_AUTHED)))
{
TC_LOG_DEBUG("server.authserver", "Got data for cmd %u recv length %u", (uint32)_cmd, (uint32)socket().recv_len());
if (!(*this.*table[i].handler)())
{
TC_LOG_DEBUG("server.authserver", "Command handler failed for cmd %u recv length %u", (uint32)_cmd, (uint32)socket().recv_len());
return;
}
break;
}
}
// Report unknown packets in the error log
if (i == AUTH_TOTAL_COMMANDS)
{
TC_LOG_ERROR("server.authserver", "Got unknown packet from '%s'", socket().getRemoteAddress().c_str());
socket().shutdown();
return;
}
}
}
// Make the SRP6 calculation from hash in dB
void AuthSocket::_SetVSFields(const std::string& rI)
{
s.SetRand(s_BYTE_SIZE * 8);
BigNumber I;
I.SetHexStr(rI.c_str());
// In case of leading zeros in the rI hash, restore them
uint8 mDigest[SHA_DIGEST_LENGTH];
memset(mDigest, 0, SHA_DIGEST_LENGTH);
if (I.GetNumBytes() <= SHA_DIGEST_LENGTH)
memcpy(mDigest, I.AsByteArray().get(), I.GetNumBytes());
std::reverse(mDigest, mDigest + SHA_DIGEST_LENGTH);
SHA1Hash sha;
sha.UpdateData(s.AsByteArray().get(), s.GetNumBytes());
sha.UpdateData(mDigest, SHA_DIGEST_LENGTH);
sha.Finalize();
BigNumber x;
x.SetBinary(sha.GetDigest(), sha.GetLength());
v = g.ModExp(x, N);
// No SQL injection (username escaped)
char *v_hex, *s_hex;
v_hex = v.AsHexStr();
s_hex = s.AsHexStr();
PreparedStatement* stmt = LoginDatabase.GetPreparedStatement(LOGIN_UPD_VS);
stmt->setString(0, v_hex);
stmt->setString(1, s_hex);
stmt->setString(2, _login);
LoginDatabase.Execute(stmt);
OPENSSL_free(v_hex);
OPENSSL_free(s_hex);
}
// Logon Challenge command handler
bool AuthSocket::_HandleLogonChallenge()
{
TC_LOG_DEBUG("server.authserver", "Entering _HandleLogonChallenge");
if (socket().recv_len() < sizeof(sAuthLogonChallenge_C))
return false;
// Read the first 4 bytes (header) to get the length of the remaining of the packet
std::vector<uint8> buf;
buf.resize(4);
socket().recv((char *)&buf[0], 4);
#if TRINITY_ENDIAN == TRINITY_BIGENDIAN
EndianConvert(*((uint16*)(buf[0])));
#endif
uint16 remaining = ((sAuthLogonChallenge_C *)&buf[0])->size;
TC_LOG_DEBUG("server.authserver", "[AuthChallenge] got header, body is %#04x bytes", remaining);
if ((remaining < sizeof(sAuthLogonChallenge_C) - buf.size()) || (socket().recv_len() < remaining))
return false;
//No big fear of memory outage (size is int16, i.e. < 65536)
buf.resize(remaining + buf.size() + 1);
buf[buf.size() - 1] = 0;
sAuthLogonChallenge_C *ch = (sAuthLogonChallenge_C*)&buf[0];
// Read the remaining of the packet
socket().recv((char *)&buf[4], remaining);
TC_LOG_DEBUG("server.authserver", "[AuthChallenge] got full packet, %#04x bytes", ch->size);
TC_LOG_DEBUG("server.authserver", "[AuthChallenge] name(%d): '%s'", ch->I_len, ch->I);
// BigEndian code, nop in little endian case
// size already converted
#if TRINITY_ENDIAN == TRINITY_BIGENDIAN
EndianConvert(*((uint32*)(&ch->gamename[0])));
EndianConvert(ch->build);
EndianConvert(*((uint32*)(&ch->platform[0])));
EndianConvert(*((uint32*)(&ch->os[0])));
EndianConvert(*((uint32*)(&ch->country[0])));
EndianConvert(ch->timezone_bias);
EndianConvert(ch->ip);
#endif
ByteBuffer pkt;
_login = (const char*)ch->I;
_build = ch->build;
_expversion = uint8(AuthHelper::IsPostBCAcceptedClientBuild(_build) ? POST_BC_EXP_FLAG : (AuthHelper::IsPreBCAcceptedClientBuild(_build) ? PRE_BC_EXP_FLAG : NO_VALID_EXP_FLAG));
_os = (const char*)ch->os;
if (_os.size() > 4)
return false;
// Restore string order as its byte order is reversed
std::reverse(_os.begin(), _os.end());
pkt << uint8(AUTH_LOGON_CHALLENGE);
pkt << uint8(0x00);
// Verify that this IP is not in the ip_banned table
LoginDatabase.Execute(LoginDatabase.GetPreparedStatement(LOGIN_DEL_EXPIRED_IP_BANS));
std::string const& ip_address = socket().getRemoteAddress();
PreparedStatement* stmt = LoginDatabase.GetPreparedStatement(LOGIN_SEL_IP_BANNED);
stmt->setString(0, ip_address);
PreparedQueryResult result = LoginDatabase.Query(stmt);
if (result)
{
pkt << uint8(WOW_FAIL_BANNED);
TC_LOG_DEBUG("server.authserver", "'%s:%d' [AuthChallenge] Banned ip tries to login!", socket().getRemoteAddress().c_str(), socket().getRemotePort());
}
else
{
// Get the account details from the account table
// No SQL injection (prepared statement)
stmt = LoginDatabase.GetPreparedStatement(LOGIN_SEL_LOGONCHALLENGE);
stmt->setString(0, _login);
PreparedQueryResult res2 = LoginDatabase.Query(stmt);
if (res2)
{
Field* fields = res2->Fetch();
// If the IP is 'locked', check that the player comes indeed from the correct IP address
bool locked = false;
if (fields[2].GetUInt8() == 1) // if ip is locked
{
TC_LOG_DEBUG("server.authserver", "[AuthChallenge] Account '%s' is locked to IP - '%s'", _login.c_str(), fields[3].GetCString());
TC_LOG_DEBUG("server.authserver", "[AuthChallenge] Player address is '%s'", ip_address.c_str());
if (strcmp(fields[4].GetCString(), ip_address.c_str()) != 0)
{
TC_LOG_DEBUG("server.authserver", "[AuthChallenge] Account IP differs");
pkt << uint8(WOW_FAIL_LOCKED_ENFORCED);
locked = true;
}
else
TC_LOG_DEBUG("server.authserver", "[AuthChallenge] Account IP matches");
}
else
{
TC_LOG_DEBUG("server.authserver", "[AuthChallenge] Account '%s' is not locked to ip", _login.c_str());
std::string accountCountry = fields[3].GetString();
if (accountCountry.empty() || accountCountry == "00")
TC_LOG_DEBUG("server.authserver", "[AuthChallenge] Account '%s' is not locked to country", _login.c_str());
else if (!accountCountry.empty())
{
uint32 ip = inet_addr(ip_address.c_str());
EndianConvertReverse(ip);
stmt = LoginDatabase.GetPreparedStatement(LOGIN_SEL_LOGON_COUNTRY);
stmt->setUInt32(0, ip);
if (PreparedQueryResult sessionCountryQuery = LoginDatabase.Query(stmt))
{
std::string loginCountry = (*sessionCountryQuery)[0].GetString();
TC_LOG_DEBUG("server.authserver", "[AuthChallenge] Account '%s' is locked to country: '%s' Player country is '%s'", _login.c_str(), accountCountry.c_str(), loginCountry.c_str());
if (loginCountry != accountCountry)
{
TC_LOG_DEBUG("server.authserver", "[AuthChallenge] Account country differs.");
pkt << uint8(WOW_FAIL_UNLOCKABLE_LOCK);
locked = true;
}
else
TC_LOG_DEBUG("server.authserver", "[AuthChallenge] Account country matches");
}
else
TC_LOG_DEBUG("server.authserver", "[AuthChallenge] IP2NATION Table empty");
}
}
if (!locked)
{
//set expired bans to inactive
LoginDatabase.DirectExecute(LoginDatabase.GetPreparedStatement(LOGIN_UPD_EXPIRED_ACCOUNT_BANS));
// If the account is banned, reject the logon attempt
stmt = LoginDatabase.GetPreparedStatement(LOGIN_SEL_ACCOUNT_BANNED);
stmt->setUInt32(0, fields[1].GetUInt32());
PreparedQueryResult banresult = LoginDatabase.Query(stmt);
if (banresult)
{
if ((*banresult)[0].GetUInt32() == (*banresult)[1].GetUInt32())
{
pkt << uint8(WOW_FAIL_BANNED);
TC_LOG_DEBUG("server.authserver", "'%s:%d' [AuthChallenge] Banned account %s tried to login!", socket().getRemoteAddress().c_str(), socket().getRemotePort(), _login.c_str ());
}
else
{
pkt << uint8(WOW_FAIL_SUSPENDED);
TC_LOG_DEBUG("server.authserver", "'%s:%d' [AuthChallenge] Temporarily banned account %s tried to login!", socket().getRemoteAddress().c_str(), socket().getRemotePort(), _login.c_str ());
}
}
else
{
// Get the password from the account table, upper it, and make the SRP6 calculation
std::string rI = fields[0].GetString();
// Don't calculate (v, s) if there are already some in the database
std::string databaseV = fields[6].GetString();
std::string databaseS = fields[7].GetString();
TC_LOG_DEBUG("network", "database authentication values: v='%s' s='%s'", databaseV.c_str(), databaseS.c_str());
// multiply with 2 since bytes are stored as hexstring
if (databaseV.size() != s_BYTE_SIZE * 2 || databaseS.size() != s_BYTE_SIZE * 2)
_SetVSFields(rI);
else
{
s.SetHexStr(databaseS.c_str());
v.SetHexStr(databaseV.c_str());
}
b.SetRand(19 * 8);
BigNumber gmod = g.ModExp(b, N);
B = ((v * 3) + gmod) % N;
ASSERT(gmod.GetNumBytes() <= 32);
BigNumber unk3;
unk3.SetRand(16 * 8);
// Fill the response packet with the result
if (AuthHelper::IsAcceptedClientBuild(_build))
pkt << uint8(WOW_SUCCESS);
else
pkt << uint8(WOW_FAIL_VERSION_INVALID);
// B may be calculated < 32B so we force minimal length to 32B
pkt.append(B.AsByteArray(32).get(), 32); // 32 bytes
pkt << uint8(1);
pkt.append(g.AsByteArray().get(), 1);
pkt << uint8(32);
pkt.append(N.AsByteArray(32).get(), 32);
pkt.append(s.AsByteArray().get(), s.GetNumBytes()); // 32 bytes
pkt.append(unk3.AsByteArray(16).get(), 16);
uint8 securityFlags = 0;
// Check if token is used
_tokenKey = fields[8].GetString();
if (!_tokenKey.empty())
securityFlags = 4;
pkt << uint8(securityFlags); // security flags (0x0...0x04)
if (securityFlags & 0x01) // PIN input
{
pkt << uint32(0);
pkt << uint64(0) << uint64(0); // 16 bytes hash?
}
if (securityFlags & 0x02) // Matrix input
{
pkt << uint8(0);
pkt << uint8(0);
pkt << uint8(0);
pkt << uint8(0);
pkt << uint64(0);
}
if (securityFlags & 0x04) // Security token input
pkt << uint8(1);
uint8 secLevel = fields[5].GetUInt8();
_accountSecurityLevel = secLevel <= SEC_ADMINISTRATOR ? AccountTypes(secLevel) : SEC_ADMINISTRATOR;
_localizationName.resize(4);
for (int i = 0; i < 4; ++i)
_localizationName[i] = ch->country[4-i-1];
TC_LOG_DEBUG("server.authserver", "'%s:%d' [AuthChallenge] account %s is using '%c%c%c%c' locale (%u)", socket().getRemoteAddress().c_str(), socket().getRemotePort(),
_login.c_str (), ch->country[3], ch->country[2], ch->country[1], ch->country[0], GetLocaleByName(_localizationName)
);
}
}
}
else //no account
pkt << uint8(WOW_FAIL_UNKNOWN_ACCOUNT);
}
socket().send((char const*)pkt.contents(), pkt.size());
return true;
}
// Logon Proof command handler
bool AuthSocket::_HandleLogonProof()
{
TC_LOG_DEBUG("server.authserver", "Entering _HandleLogonProof");
// Read the packet
sAuthLogonProof_C lp;
if (!socket().recv((char *)&lp, sizeof(sAuthLogonProof_C)))
return false;
// If the client has no valid version
if (_expversion == NO_VALID_EXP_FLAG)
{
// Check if we have the appropriate patch on the disk
TC_LOG_DEBUG("network", "Client with invalid version, patching is not implemented");
socket().shutdown();
return true;
}
// Continue the SRP6 calculation based on data received from the client
BigNumber A;
A.SetBinary(lp.A, 32);
// SRP safeguard: abort if A == 0
if (A.isZero())
{
socket().shutdown();
return true;
}
SHA1Hash sha;
sha.UpdateBigNumbers(&A, &B, NULL);
sha.Finalize();
BigNumber u;
u.SetBinary(sha.GetDigest(), 20);
BigNumber S = (A * (v.ModExp(u, N))).ModExp(b, N);
uint8 t[32];
uint8 t1[16];
uint8 vK[40];
memcpy(t, S.AsByteArray(32).get(), 32);
for (int i = 0; i < 16; ++i)
t1[i] = t[i * 2];
sha.Initialize();
sha.UpdateData(t1, 16);
sha.Finalize();
for (int i = 0; i < 20; ++i)
vK[i * 2] = sha.GetDigest()[i];
for (int i = 0; i < 16; ++i)
t1[i] = t[i * 2 + 1];
sha.Initialize();
sha.UpdateData(t1, 16);
sha.Finalize();
for (int i = 0; i < 20; ++i)
vK[i * 2 + 1] = sha.GetDigest()[i];
K.SetBinary(vK, 40);
uint8 hash[20];
sha.Initialize();
sha.UpdateBigNumbers(&N, NULL);
sha.Finalize();
memcpy(hash, sha.GetDigest(), 20);
sha.Initialize();
sha.UpdateBigNumbers(&g, NULL);
sha.Finalize();
for (int i = 0; i < 20; ++i)
hash[i] ^= sha.GetDigest()[i];
BigNumber t3;
t3.SetBinary(hash, 20);
sha.Initialize();
sha.UpdateData(_login);
sha.Finalize();
uint8 t4[SHA_DIGEST_LENGTH];
memcpy(t4, sha.GetDigest(), SHA_DIGEST_LENGTH);
sha.Initialize();
sha.UpdateBigNumbers(&t3, NULL);
sha.UpdateData(t4, SHA_DIGEST_LENGTH);
sha.UpdateBigNumbers(&s, &A, &B, &K, NULL);
sha.Finalize();
BigNumber M;
M.SetBinary(sha.GetDigest(), 20);
// Check if SRP6 results match (password is correct), else send an error
if (!memcmp(M.AsByteArray().get(), lp.M1, 20))
{
TC_LOG_DEBUG("server.authserver", "'%s:%d' User '%s' successfully authenticated", socket().getRemoteAddress().c_str(), socket().getRemotePort(), _login.c_str());
// Update the sessionkey, last_ip, last login time and reset number of failed logins in the account table for this account
// No SQL injection (escaped user name) and IP address as received by socket
const char *K_hex = K.AsHexStr();
PreparedStatement *stmt = LoginDatabase.GetPreparedStatement(LOGIN_UPD_LOGONPROOF);
stmt->setString(0, K_hex);
stmt->setString(1, socket().getRemoteAddress().c_str());
stmt->setUInt32(2, GetLocaleByName(_localizationName));
stmt->setString(3, _os);
stmt->setString(4, _login);
LoginDatabase.DirectExecute(stmt);
OPENSSL_free((void*)K_hex);
// Finish SRP6 and send the final result to the client
sha.Initialize();
sha.UpdateBigNumbers(&A, &M, &K, NULL);
sha.Finalize();
// Check auth token
if ((lp.securityFlags & 0x04) || !_tokenKey.empty())
{
uint8 size;
socket().recv((char*)&size, 1);
char* token = new char[size + 1];
token[size] = '\0';
socket().recv(token, size);
unsigned int validToken = TOTP::GenerateToken(_tokenKey.c_str());
unsigned int incomingToken = atoi(token);
delete[] token;
if (validToken != incomingToken)
{
char data[] = { AUTH_LOGON_PROOF, WOW_FAIL_UNKNOWN_ACCOUNT, 3, 0 };
socket().send(data, sizeof(data));
return false;
}
}
if (_expversion & POST_BC_EXP_FLAG) // 2.x and 3.x clients
{
sAuthLogonProof_S proof;
memcpy(proof.M2, sha.GetDigest(), 20);
proof.cmd = AUTH_LOGON_PROOF;
proof.error = 0;
proof.unk1 = 0x00800000; // Accountflags. 0x01 = GM, 0x08 = Trial, 0x00800000 = Pro pass (arena tournament)
proof.unk2 = 0x00; // SurveyId
proof.unk3 = 0x00;
socket().send((char *)&proof, sizeof(proof));
}
else
{
sAuthLogonProof_S_Old proof;
memcpy(proof.M2, sha.GetDigest(), 20);
proof.cmd = AUTH_LOGON_PROOF;
proof.error = 0;
proof.unk2 = 0x00;
socket().send((char *)&proof, sizeof(proof));
}
_authed = true;
}
else
{
char data[4] = { AUTH_LOGON_PROOF, WOW_FAIL_UNKNOWN_ACCOUNT, 3, 0 };
socket().send(data, sizeof(data));
TC_LOG_DEBUG("server.authserver", "'%s:%d' [AuthChallenge] account %s tried to login with invalid password!", socket().getRemoteAddress().c_str(), socket().getRemotePort(), _login.c_str ());
uint32 MaxWrongPassCount = sConfigMgr->GetIntDefault("WrongPass.MaxCount", 0);
if (MaxWrongPassCount > 0)
{
//Increment number of failed logins by one and if it reaches the limit temporarily ban that account or IP
PreparedStatement *stmt = LoginDatabase.GetPreparedStatement(LOGIN_UPD_FAILEDLOGINS);
stmt->setString(0, _login);
LoginDatabase.Execute(stmt);
stmt = LoginDatabase.GetPreparedStatement(LOGIN_SEL_FAILEDLOGINS);
stmt->setString(0, _login);
if (PreparedQueryResult loginfail = LoginDatabase.Query(stmt))
{
uint32 failed_logins = (*loginfail)[1].GetUInt32();
if (failed_logins >= MaxWrongPassCount)
{
uint32 WrongPassBanTime = sConfigMgr->GetIntDefault("WrongPass.BanTime", 600);
bool WrongPassBanType = sConfigMgr->GetBoolDefault("WrongPass.BanType", false);
if (WrongPassBanType)
{
uint32 acc_id = (*loginfail)[0].GetUInt32();
stmt = LoginDatabase.GetPreparedStatement(LOGIN_INS_ACCOUNT_AUTO_BANNED);
stmt->setUInt32(0, acc_id);
stmt->setUInt32(1, WrongPassBanTime);
LoginDatabase.Execute(stmt);
TC_LOG_DEBUG("server.authserver", "'%s:%d' [AuthChallenge] account %s got banned for '%u' seconds because it failed to authenticate '%u' times",
socket().getRemoteAddress().c_str(), socket().getRemotePort(), _login.c_str(), WrongPassBanTime, failed_logins);
}
else
{
stmt = LoginDatabase.GetPreparedStatement(LOGIN_INS_IP_AUTO_BANNED);
stmt->setString(0, socket().getRemoteAddress());
stmt->setUInt32(1, WrongPassBanTime);
LoginDatabase.Execute(stmt);
TC_LOG_DEBUG("server.authserver", "'%s:%d' [AuthChallenge] IP %s got banned for '%u' seconds because account %s failed to authenticate '%u' times",
socket().getRemoteAddress().c_str(), socket().getRemotePort(), socket().getRemoteAddress().c_str(), WrongPassBanTime, _login.c_str(), failed_logins);
}
}
}
}
}
return true;
}
// Reconnect Challenge command handler
bool AuthSocket::_HandleReconnectChallenge()
{
TC_LOG_DEBUG("server.authserver", "Entering _HandleReconnectChallenge");
if (socket().recv_len() < sizeof(sAuthLogonChallenge_C))
return false;
// Read the first 4 bytes (header) to get the length of the remaining of the packet
std::vector<uint8> buf;
buf.resize(4);
socket().recv((char *)&buf[0], 4);
#if TRINITY_ENDIAN == TRINITY_BIGENDIAN
EndianConvert(*((uint16*)(buf[0])));
#endif
uint16 remaining = ((sAuthLogonChallenge_C *)&buf[0])->size;
TC_LOG_DEBUG("server.authserver", "[ReconnectChallenge] got header, body is %#04x bytes", remaining);
if ((remaining < sizeof(sAuthLogonChallenge_C) - buf.size()) || (socket().recv_len() < remaining))
return false;
// No big fear of memory outage (size is int16, i.e. < 65536)
buf.resize(remaining + buf.size() + 1);
buf[buf.size() - 1] = 0;
sAuthLogonChallenge_C *ch = (sAuthLogonChallenge_C*)&buf[0];
// Read the remaining of the packet
socket().recv((char *)&buf[4], remaining);
TC_LOG_DEBUG("server.authserver", "[ReconnectChallenge] got full packet, %#04x bytes", ch->size);
TC_LOG_DEBUG("server.authserver", "[ReconnectChallenge] name(%d): '%s'", ch->I_len, ch->I);
_login = (const char*)ch->I;
PreparedStatement* stmt = LoginDatabase.GetPreparedStatement(LOGIN_SEL_SESSIONKEY);
stmt->setString(0, _login);
PreparedQueryResult result = LoginDatabase.Query(stmt);
// Stop if the account is not found
if (!result)
{
TC_LOG_ERROR("server.authserver", "'%s:%d' [ERROR] user %s tried to login and we cannot find his session key in the database.", socket().getRemoteAddress().c_str(), socket().getRemotePort(), _login.c_str());
socket().shutdown();
return false;
}
// Reinitialize build, expansion and the account securitylevel
_build = ch->build;
_expversion = uint8(AuthHelper::IsPostBCAcceptedClientBuild(_build) ? POST_BC_EXP_FLAG : (AuthHelper::IsPreBCAcceptedClientBuild(_build) ? PRE_BC_EXP_FLAG : NO_VALID_EXP_FLAG));
_os = (const char*)ch->os;
if (_os.size() > 4)
return false;
// Restore string order as its byte order is reversed
std::reverse(_os.begin(), _os.end());
Field* fields = result->Fetch();
uint8 secLevel = fields[2].GetUInt8();
_accountSecurityLevel = secLevel <= SEC_ADMINISTRATOR ? AccountTypes(secLevel) : SEC_ADMINISTRATOR;
K.SetHexStr ((*result)[0].GetCString());
// Sending response
ByteBuffer pkt;
pkt << uint8(AUTH_RECONNECT_CHALLENGE);
pkt << uint8(0x00);
_reconnectProof.SetRand(16 * 8);
pkt.append(_reconnectProof.AsByteArray(16).get(), 16); // 16 bytes random
pkt << uint64(0x00) << uint64(0x00); // 16 bytes zeros
socket().send((char const*)pkt.contents(), pkt.size());
return true;
}
// Reconnect Proof command handler
bool AuthSocket::_HandleReconnectProof()
{
TC_LOG_DEBUG("server.authserver", "Entering _HandleReconnectProof");
// Read the packet
sAuthReconnectProof_C lp;
if (!socket().recv((char *)&lp, sizeof(sAuthReconnectProof_C)))
return false;
if (_login.empty() || !_reconnectProof.GetNumBytes() || !K.GetNumBytes())
return false;
BigNumber t1;
t1.SetBinary(lp.R1, 16);
SHA1Hash sha;
sha.Initialize();
sha.UpdateData(_login);
sha.UpdateBigNumbers(&t1, &_reconnectProof, &K, NULL);
sha.Finalize();
if (!memcmp(sha.GetDigest(), lp.R2, SHA_DIGEST_LENGTH))
{
// Sending response
ByteBuffer pkt;
pkt << uint8(AUTH_RECONNECT_PROOF);
pkt << uint8(0x00);
pkt << uint16(0x00); // 2 bytes zeros
socket().send((char const*)pkt.contents(), pkt.size());
_authed = true;
return true;
}
else
{
TC_LOG_ERROR("server.authserver", "'%s:%d' [ERROR] user %s tried to login, but session is invalid.", socket().getRemoteAddress().c_str(), socket().getRemotePort(), _login.c_str());
socket().shutdown();
return false;
}
}
ACE_INET_Addr const& AuthSocket::GetAddressForClient(Realm const& realm, ACE_INET_Addr const& clientAddr)
{
// Attempt to send best address for client
if (clientAddr.is_loopback())
{
// Try guessing if realm is also connected locally
if (realm.LocalAddress.is_loopback() || realm.ExternalAddress.is_loopback())
return clientAddr;
// Assume that user connecting from the machine that authserver is located on
// has all realms available in his local network
return realm.LocalAddress;
}
// Check if connecting client is in the same network
if (IsIPAddrInNetwork(realm.LocalAddress, clientAddr, realm.LocalSubnetMask))
return realm.LocalAddress;
// Return external IP
return realm.ExternalAddress;
}
// Realm List command handler
bool AuthSocket::_HandleRealmList()
{
TC_LOG_DEBUG("server.authserver", "Entering _HandleRealmList");
if (socket().recv_len() < 5)
return false;
socket().recv_skip(5);
// Get the user id (else close the connection)
// No SQL injection (prepared statement)
PreparedStatement* stmt = LoginDatabase.GetPreparedStatement(LOGIN_SEL_ACCOUNT_ID_BY_NAME);
stmt->setString(0, _login);
PreparedQueryResult result = LoginDatabase.Query(stmt);
if (!result)
{
TC_LOG_ERROR("server.authserver", "'%s:%d' [ERROR] user %s tried to login but we cannot find him in the database.", socket().getRemoteAddress().c_str(), socket().getRemotePort(), _login.c_str());
socket().shutdown();
return false;
}
Field* fields = result->Fetch();
uint32 id = fields[0].GetUInt32();
// Update realm list if need
sRealmList->UpdateIfNeed();
ACE_INET_Addr clientAddr;
socket().peer().get_remote_addr(clientAddr);
// Circle through realms in the RealmList and construct the return packet (including # of user characters in each realm)
ByteBuffer pkt;
size_t RealmListSize = 0;
for (RealmList::RealmMap::const_iterator i = sRealmList->begin(); i != sRealmList->end(); ++i)
{
const Realm &realm = i->second;
// don't work with realms which not compatible with the client
bool okBuild = ((_expversion & POST_BC_EXP_FLAG) && realm.gamebuild == _build) || ((_expversion & PRE_BC_EXP_FLAG) && !AuthHelper::IsPreBCAcceptedClientBuild(realm.gamebuild));
// No SQL injection. id of realm is controlled by the database.
uint32 flag = realm.flag;
RealmBuildInfo const* buildInfo = AuthHelper::GetBuildInfo(realm.gamebuild);
if (!okBuild)
{
if (!buildInfo)
continue;
flag |= REALM_FLAG_OFFLINE | REALM_FLAG_SPECIFYBUILD; // tell the client what build the realm is for
}
if (!buildInfo)
flag &= ~REALM_FLAG_SPECIFYBUILD;
std::string name = i->first;
if (_expversion & PRE_BC_EXP_FLAG && flag & REALM_FLAG_SPECIFYBUILD)
{
std::ostringstream ss;
ss << name << " (" << buildInfo->MajorVersion << '.' << buildInfo->MinorVersion << '.' << buildInfo->BugfixVersion << ')';
name = ss.str();
}
// We don't need the port number from which client connects with but the realm's port
clientAddr.set_port_number(realm.ExternalAddress.get_port_number());
uint8 lock = (realm.allowedSecurityLevel > _accountSecurityLevel) ? 1 : 0;
uint8 AmountOfCharacters = 0;
stmt = LoginDatabase.GetPreparedStatement(LOGIN_SEL_NUM_CHARS_ON_REALM);
stmt->setUInt32(0, realm.m_ID);
stmt->setUInt32(1, id);
result = LoginDatabase.Query(stmt);
if (result)
AmountOfCharacters = (*result)[0].GetUInt8();
pkt << realm.icon; // realm type
if (_expversion & POST_BC_EXP_FLAG) // only 2.x and 3.x clients
pkt << lock; // if 1, then realm locked
pkt << uint8(flag); // RealmFlags
pkt << name;
pkt << GetAddressString(GetAddressForClient(realm, clientAddr));
pkt << realm.populationLevel;
pkt << AmountOfCharacters;
pkt << realm.timezone; // realm category
if (_expversion & POST_BC_EXP_FLAG) // 2.x and 3.x clients
pkt << uint8(0x2C); // unk, may be realm number/id?
else
pkt << uint8(0x0); // 1.12.1 and 1.12.2 clients
if (_expversion & POST_BC_EXP_FLAG && flag & REALM_FLAG_SPECIFYBUILD)
{