-
Notifications
You must be signed in to change notification settings - Fork 14
/
main.h
1540 lines (1305 loc) · 46.2 KB
/
main.h
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) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2012 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef TAO_MAIN_H
#define TAO_MAIN_H
#include "core.h"
#include "bignum.h"
#include "sync.h"
#include "txmempool.h"
#include "net.h"
#include "script.h"
#include "scrypt.h"
#include "hashblock.h"
#include "support/vectors.h"
#include <list>
class CValidationState;
#define START_ALPHANODE_PAYMENTS_TESTNET 4070908800 // JAN 1, 2099 00:00:00 GMT
#define START_ALPHANODE_PAYMENTS 4070908800
#define INSTANTX_SIGNATURES_REQUIRED 10
#define INSTANTX_SIGNATURES_TOTAL 15
class CBlock;
class CBlockIndex;
class CInv;
class CKeyItem;
class CNode;
class CReserveKey;
class CWallet;
/** The maximum allowed multiple for the computed block size */
static const unsigned int MAX_BLOCK_SIZE_INCREASE_MULTIPLE = 2;
/** The number of blocks to consider in the computation of median block size */
static const unsigned int NUM_BLOCKS_FOR_MEDIAN_BLOCK = 2016;
/** The maximum allowed size for a serialized block, in bytes (network rule) */
static unsigned int maxBlockSize = 20000000;
static const unsigned int OLD_MAX_BLOCK_SIZE = 1000000;
static const unsigned int MAX_TX_SIZE = 1000000;
/** The maximum size for mined blocks */
static const unsigned int MAX_BLOCK_SIZE_GEN = maxBlockSize/2;
/** Default for -blockprioritysize, maximum space for zero/low-fee transactions **/
static const unsigned int DEFAULT_BLOCK_PRIORITY_SIZE = 50000;
/** The maximum size for transactions we're willing to relay/mine **/
static const unsigned int MAX_STANDARD_TX_SIZE = MAX_BLOCK_SIZE_GEN/5;
/** The maximum number of sigops we're willing to relay/mine in a single tx */
static unsigned int maxBlockSigops = maxBlockSize/50;
static unsigned int maxStandardTxSigops = maxBlockSize/5;
/** Maxiumum number of signature check operations in an IsStandard() P2SH script */
static const unsigned int MAX_P2SH_SIGOPS = 15;
/** The maximum number of orphan transactions kept in memory */
static const unsigned int MAX_ORPHAN_TRANSACTIONS = maxBlockSize/100;
/** Default for -maxorphanblocks, maximum number of orphan blocks kept in memory */
static const unsigned int DEFAULT_MAX_ORPHAN_BLOCKS = 10000;
/** The maximum number of entries in an 'inv' protocol message */
static const unsigned int MAX_INV_SZ = 50000;
/** Fees smaller than this (in satoshi) are considered zero fee (for transaction creation) */
static const int64_t MIN_TX_FEE = 0.00001*COIN;
static const int64_t MIN_INTELLITX_FEE = 10*COIN; // 10 TAO
/** Fees smaller than this (in satoshi) are considered zero fee (for relaying) */
static const int64_t MIN_RELAY_TX_FEE = 0.00001*COIN;
/** No amount larger than this (in satoshi) is valid */
static const int64_t MAX_MONEY = 4000000000u * COIN;
inline bool MoneyRange(int64_t nValue) { return (nValue >= 0 && nValue <= MAX_MONEY); }
/** Threshold for nLockTime: below this value it is interpreted as block number, otherwise as UNIX timestamp. */
static const unsigned int LOCKTIME_THRESHOLD = 500000000; // Tue Nov 5 00:53:20 1985 UTC
/** Number of blocks that can be requested at any given time from a single peer. */
static const int MAX_BLOCKS_IN_TRANSIT_PER_PEER = 128;
/** Timeout in seconds before considering a block download peer unresponsive. */
static const unsigned int BLOCK_DOWNLOAD_TIMEOUT = 60;
/** Defaults to yes, adaptively increase/decrease max/min/priority along with the re-calculated block size **/
static const unsigned int DEFAULT_SCALE_BLOCK_SIZE_OPTIONS = 1;
static const int64_t DRIFT = 600;
inline int64_t FutureDrift(int64_t nTime) { return nTime + DRIFT; }
/** "reject" message codes **/
static const unsigned char REJECT_INVALID = 0x10;
extern CScript COINBASE_FLAGS;
extern CCriticalSection cs_main;
extern CTxMemPool mempool;
extern std::map<uint256, CBlockIndex*> mapBlockIndex;
extern std::set<std::pair<COutPoint, unsigned int> > setStakeSeen;
extern CBlockIndex* pindexGenesisBlock;
extern unsigned int nNodeLifespan;
extern int nBestHeight;
extern uint256 nBestChainTrust;
extern uint256 nBestInvalidTrust;
extern uint256 hashBestChain;
extern CBlockIndex* pindexBest;
extern uint64_t nLastBlockTx;
extern uint64_t nLastBlockSize;
extern int64_t nLastCoinStakeSearchInterval;
extern const std::string strMessageMagic;
extern int64_t nTimeBestReceived;
extern bool fImporting;
extern bool fReindex;
struct COrphanBlock;
extern std::map<uint256, COrphanBlock*> mapOrphanBlocks;
extern bool fHaveGUI;
// Settings
extern bool fUseFastIndex;
extern unsigned int nDerivationMethodIndex;
extern bool fLargeWorkForkFound;
extern bool fLargeWorkInvalidChainFound;
extern std::map<uint256, int64_t> mapRejectedBlocks;
// Minimum disk space required - used in CheckDiskSpace()
static const uint64_t nMinDiskSpace = 52428800;
class CReserveKey;
class CTxDB;
class CTxIndex;
class CWalletInterface;
struct CNodeStateStats;
/** Register a wallet to receive updates from core */
void RegisterWallet(CWalletInterface* pwalletIn);
/** Unregister a wallet from core */
void UnregisterWallet(CWalletInterface* pwalletIn);
/** Unregister all wallets from core */
void UnregisterAllWallets();
/** Push an updated transaction to all registered wallets */
void SyncWithWallets(const CTransaction& tx, const CBlock* pblock = NULL, bool fConnect = true);
/** Ask wallets to resend their transactions */
void ResendWalletTransactions(bool fForce = false);
/** Register with a network node to receive its signals */
void RegisterNodeSignals(CNodeSignals& nodeSignals);
/** Unregister a network node */
void UnregisterNodeSignals(CNodeSignals& nodeSignals);
void PushGetBlocks(CNode* pnode, CBlockIndex* pindexBegin, uint256 hashEnd);
bool ProcessBlock(CNode* pfrom, CBlock* pblock);
bool CheckDiskSpace(uint64_t nAdditionalBytes=0);
FILE* OpenBlockFile(unsigned int nFile, unsigned int nBlockPos, const char* pszMode="rb");
FILE* AppendBlockFile(unsigned int& nFileRet);
bool LoadBlockIndex(bool fAllowNew=true);
void PrintBlockTree();
CBlockIndex* FindBlockByHeight(int nHeight);
bool ProcessMessages(CNode* pfrom);
bool SendMessages(CNode* pto, bool fSendTrickle);
void ThreadImport(std::vector<boost::filesystem::path> vImportFiles);
bool CheckProofOfWork(uint256 hash, unsigned int nBits);
unsigned int GetNextTargetRequired(const CBlockIndex* pindexLast, bool fProofOfStake);
int64_t GetProofOfWorkReward(int nHeight, int64_t nFees);
int64_t GetProofOfStakeReward(const CBlockIndex* pindexPrev, int64_t nCoinAge, int64_t nFees);
bool IsInitialBlockDownload();
bool IsConfirmedInNPrevBlocks(const CTxIndex& txindex, const CBlockIndex* pindexFrom, int nMaxDepth, int& nActualDepth);
std::string GetWarnings(std::string strFor);
bool GetTransaction(const uint256 &hash, CTransaction &tx, uint256 &hashBlock);
uint256 WantedByOrphan(const COrphanBlock* pblockOrphan);
const CBlockIndex* GetLastBlockIndex(const CBlockIndex* pindex, bool fProofOfStake);
void ThreadStakeMiner(CWallet *pwallet);
/** (try to) add transaction to memory pool **/
bool AcceptToMemoryPool(CTxMemPool& pool, CTransaction &tx, bool fLimitFree,
bool* pfMissingInputs, bool fRejectInsaneFee=false, bool ignoreFees=false);
bool AcceptableInputs(CTxMemPool& pool, const CTransaction &txo, bool fLimitFree,
bool* pfMissingInputs, bool fRejectInsaneFee=false, bool isDSTX=false);
bool FindTransactionsByDestination(const CTxDestination &dest, std::vector<uint256> &vtxhash);
int GetInputAge(CTxIn& vin);
int GetInputAgeIX(uint256 nTXHash, CTxIn& vin);
int GetIXConfirmations(uint256 nTXHash);
/** Abort with a message */
bool AbortNode(const std::string &msg, const std::string &userMessage="");
/** Get statistics from node state */
bool GetNodeStateStats(NodeId nodeid, CNodeStateStats &stats);
/** Increase a node's misbehavior score. */
void Misbehaving(NodeId nodeid, int howmuch);
int64_t GetAlphanodePayment(int nHeight, int64_t blockValue);
std::string stringFromVch(const std::vector<unsigned char> &vch);
struct CNodeStateStats {
int nMisbehavior;
};
int GetCurrentBlockHeight();
/** Position on disk for a particular transaction. */
class CDiskTxPos
{
public:
unsigned int nFile;
unsigned int nBlockPos;
unsigned int nTxPos;
CDiskTxPos()
{
SetNull();
}
CDiskTxPos(unsigned int nFileIn, unsigned int nBlockPosIn, unsigned int nTxPosIn)
{
nFile = nFileIn;
nBlockPos = nBlockPosIn;
nTxPos = nTxPosIn;
}
IMPLEMENT_SERIALIZE( READWRITE(FLATDATA(*this)); )
void SetNull() { nFile = (unsigned int) -1; nBlockPos = 0; nTxPos = 0; }
bool IsNull() const { return (nFile == (unsigned int) -1); }
friend bool operator==(const CDiskTxPos& a, const CDiskTxPos& b)
{
return (a.nFile == b.nFile &&
a.nBlockPos == b.nBlockPos &&
a.nTxPos == b.nTxPos);
}
friend bool operator!=(const CDiskTxPos& a, const CDiskTxPos& b)
{
return !(a == b);
}
std::string ToString() const
{
if (IsNull())
return "null";
else
return strprintf("(nFile=%u, nBlockPos=%u, nTxPos=%u)", nFile, nBlockPos, nTxPos);
}
};
enum GetMinFee_mode
{
GMF_BLOCK,
GMF_RELAY,
GMF_SEND,
};
typedef std::map<uint256, std::pair<CTxIndex, CTransaction> > MapPrevTx;
int64_t GetMinFee(const CTransaction& tx, unsigned int nBytes, bool fAllowFree, enum GetMinFee_mode mode);
/** The basic transaction that is broadcasted on the network and contained in
* blocks. A transaction can contain multiple inputs and outputs.
*/
class CTransaction
{
public:
static const int CURRENT_VERSION=INTELLITX_VERSION;
int nVersion;
unsigned int nTime;
std::vector<CTxIn> vin;
std::vector<CTxOut> vout;
unsigned int nLockTime;
std::vector<unsigned char> data;
// Denial-of-service detection:
mutable int nDoS;
bool DoS(int nDoSIn, bool fIn) const { nDoS += nDoSIn; return fIn; }
CTransaction()
{
SetNull();
}
CTransaction(int nVersion, unsigned int nTime, const std::vector<CTxIn>& vin, const std::vector<CTxOut>& vout, unsigned int nLockTime)
: nVersion(nVersion), nTime(nTime), vin(vin), vout(vout), nLockTime(nLockTime), nDoS(0)
{
}
IMPLEMENT_SERIALIZE
(
READWRITE(this->nVersion);
nVersion = this->nVersion;
READWRITE(nTime);
READWRITE(vin);
READWRITE(vout);
READWRITE(nLockTime);
READWRITE(data);
)
void SetNull()
{
nVersion = CTransaction::CURRENT_VERSION;
nTime = GetAdjustedTime();
vin.clear();
vout.clear();
nLockTime = 0;
nDoS = 0; // Denial-of-service prevention
data.clear();
}
bool IsNull() const
{
return (vin.empty() && vout.empty());
}
uint256 GetHash() const
{
return SerializeHash(*this);
}
std::string GetBase64Data() const {
return stringFromVch(data);
}
void SetData(std::string d)
{
data = vchFromString(EncodeBase64(d.c_str()));
}
std::string GetData() const {
return DecodeBase64(stringFromVch(data));
}
bool IsIntelliTx() const
{
bool test = false;
CScript::const_iterator pc;
BOOST_FOREACH(const CTxOut& out, vout)
{
vector<vector<unsigned char> > vvch;
opcodetype opcode;
CScript script = out.scriptPubKey;
int op;
if (!script.GetOp(pc, opcode))
return false;
if (opcode < OP_1 || opcode > OP_16)
return false;
op = CScript::DecodeOP_N(opcode);
for (;;) {
vector<unsigned char> vch;
if (!script.GetOp(pc, opcode, vch))
return false;
if (opcode == OP_DROP || opcode == OP_2DROP || opcode == OP_NOP)
break;
if (!(opcode >= 0 && opcode <= OP_PUSHDATA4))
return false;
vvch.push_back(vch);
}
// move the pc to after any DROP or NOP
while (opcode == OP_DROP || opcode == OP_2DROP || opcode == OP_NOP) {
if (!script.GetOp(pc, opcode))
break;
}
if ((op == OP_IDENTITY && vvch.size() == 1)
|| (op == OP_ORDER && vvch.size() == 1)
|| (op == OP_ESCROW && vvch.size() == 1)
|| (op == OP_ACCEPT && vvch.size() == 1)
|| (op == OP_EXPIRE && vvch.size() == 1)
|| (op == OP_PROVENANCE && vvch.size() == 1)
|| (op == OP_EXECUTE && vvch.size() == 1)
|| (op == OP_UTXO && vvch.size() == 1)
|| (op == OP_RELEASE && vvch.size() == 1))
{
test = true;
} else {
return false;
}
}
return (test && (vout.size() == 1)); // IntelliTx only have one vout
}
bool IsCoinBase() const
{
return (vin.size() == 1 && vin[0].prevout.IsNull() && vout.size() >= 1);
}
bool IsCoinStake() const
{
// ppcoin: the coin stake transaction is marked with the first output empty
return (vin.size() > 0 && (!vin[0].prevout.IsNull()) && vout.size() >= 2 && vout[0].IsEmpty());
}
// Compute priority, given priority of inputs and (optionally) tx size
double ComputePriority(double dPriorityInputs, unsigned int nTxSize=0) const;
/** Amount of bitcoins spent by this transaction.
@return sum of all outputs (note: does not include fees)
*/
int64_t GetValueOut() const
{
int64_t nValueOut = 0;
BOOST_FOREACH(const CTxOut& txout, vout)
{
nValueOut += txout.nValue;
if (!MoneyRange(txout.nValue) || !MoneyRange(nValueOut))
throw std::runtime_error("CTransaction::GetValueOut() : value out of range");
}
return nValueOut;
}
/** Amount of bitcoins coming in to this transaction
Note that lightweight clients may not know anything besides the hash of previous transactions,
so may not be able to calculate this.
@param[in] mapInputs Map of previous transactions that have outputs we're spending
@return Sum of value of all inputs (scriptSigs)
@see CTransaction::FetchInputs
*/
int64_t GetValueIn(const MapPrevTx& mapInputs) const;
bool ReadFromDisk(CDiskTxPos pos, FILE** pfileRet=NULL)
{
CAutoFile filein = CAutoFile(OpenBlockFile(pos.nFile, 0, pfileRet ? "rb+" : "rb"), SER_DISK, CLIENT_VERSION);
if (!filein)
return error("CTransaction::ReadFromDisk() : OpenBlockFile failed");
// Read transaction
if (fseek(filein, pos.nTxPos, SEEK_SET) != 0)
return error("CTransaction::ReadFromDisk() : fseek failed");
try {
filein >> *this;
}
catch (std::exception &e) {
return error("%s() : deserialize or I/O error", __PRETTY_FUNCTION__);
}
// Return file pointer
if (pfileRet)
{
if (fseek(filein, pos.nTxPos, SEEK_SET) != 0)
return error("CTransaction::ReadFromDisk() : second fseek failed");
*pfileRet = filein.release();
}
return true;
}
friend bool operator==(const CTransaction& a, const CTransaction& b)
{
return (a.nVersion == b.nVersion &&
a.nTime == b.nTime &&
a.vin == b.vin &&
a.vout == b.vout &&
a.nLockTime == b.nLockTime);
}
friend bool operator!=(const CTransaction& a, const CTransaction& b)
{
return !(a == b);
}
std::string ToString() const
{
std::string str;
str += IsCoinBase()? "Coinbase" : (IsCoinStake()? "Coinstake" : "CTransaction");
str += strprintf("(hash=%s, nTime=%d, ver=%d, vin.size=%u, vout.size=%u, nLockTime=%d, data.size=%" PRIszu")\n",
GetHash().ToString(),
nTime,
nVersion,
vin.size(),
vout.size(),
nLockTime,
data.size());
for (unsigned int i = 0; i < vin.size(); i++)
str += " " + vin[i].ToString() + "\n";
for (unsigned int i = 0; i < vout.size(); i++)
str += " " + vout[i].ToString() + "\n";
return str;
}
bool ReadFromDisk(CTxDB& txdb, const uint256& hash, CTxIndex& txindexRet);
bool ReadFromDisk(CTxDB& txdb, COutPoint prevout, CTxIndex& txindexRet);
bool ReadFromDisk(CTxDB& txdb, COutPoint prevout);
bool ReadFromDisk(COutPoint prevout);
bool DisconnectInputs(CTxDB& txdb);
/** Fetch from memory and/or disk. inputsRet keys are transaction hashes.
@param[in] txdb Transaction database
@param[in] mapTestPool List of pending changes to the transaction index database
@param[in] fBlock True if being called to add a new best-block to the chain
@param[in] fMiner True if being called by CreateNewBlock
@param[out] inputsRet Pointers to this transaction's inputs
@param[out] fInvalid returns true if transaction is invalid
@return Returns true if all inputs are in txdb or mapTestPool
*/
bool FetchInputs(CTxDB& txdb, const std::map<uint256, CTxIndex>& mapTestPool,
bool fBlock, bool fMiner, MapPrevTx& inputsRet, bool& fInvalid);
/** Sanity check previous transactions, then, if all checks succeed,
mark them as spent by this transaction.
@param[in] inputs Previous transactions (from FetchInputs)
@param[out] mapTestPool Keeps track of inputs that need to be updated on disk
@param[in] posThisTx Position of this transaction on disk
@param[in] pindexBlock
@param[in] fBlock true if called from ConnectBlock
@param[in] fMiner true if called from CreateNewBlock
@return Returns true if all checks succeed
*/
bool ConnectInputs(CTxDB& txdb, MapPrevTx inputs,
std::map<uint256, CTxIndex>& mapTestPool, const CDiskTxPos& posThisTx,
const CBlockIndex* pindexBlock, bool fBlock, bool fMiner, unsigned int flags = STANDARD_SCRIPT_VERIFY_FLAGS, bool fValidateSig = true);
bool CheckTransaction() const;
bool GetCoinAge(CTxDB& txdb, const CBlockIndex* pindexPrev, uint64_t& nCoinAge) const;
const CTxOut& GetOutputFor(const CTxIn& input, const MapPrevTx& inputs) const;
};
/** wrapper for CTxOut that provides a more compact serialization */
class CTxOutCompressor
{
private:
CTxOut &txout;
public:
CTxOutCompressor(CTxOut &txoutIn) : txout(txoutIn) { }
IMPLEMENT_SERIALIZE(
READWRITE(VARINT(txout.nValue));
CScriptCompressor cscript(REF(txout.scriptPubKey));
READWRITE(cscript);
)
};
/** Check for standard transaction types
@param[in] mapInputs Map of previous transactions that have outputs we're spending
@return True if all inputs (scriptSigs) use only standard transaction forms
@see CTransaction::FetchInputs
*/
bool AreInputsStandard(const CTransaction& tx, const MapPrevTx& mapInputs);
/** Count ECDSA signature operations the old-fashioned (pre-0.6) way
@return number of sigops this transaction's outputs will produce when spent
@see CTransaction::FetchInputs
*/
unsigned int GetLegacySigOpCount(const CTransaction& tx);
/** Count ECDSA signature operations in pay-to-script-hash inputs.
@param[in] mapInputs Map of previous transactions that have outputs we're spending
@return maximum number of sigops required to validate this transaction's inputs
@see CTransaction::FetchInputs
*/
unsigned int GetP2SHSigOpCount(const CTransaction& tx, const MapPrevTx& mapInputs);
inline bool AllowFree(double dPriority)
{
// Large (in bytes) low-priority (new, small-coin) transactions
// need a fee.
return dPriority > COIN * 576 / 250;
}
/** Check for standard transaction types
@return True if all outputs (scriptPubKeys) use only standard transaction forms
*/
bool IsStandardTx(const CTransaction& tx, std::string& reason);
bool IsFinalTx(const CTransaction &tx, int nBlockHeight = 0, int64_t nBlockTime = 0);
/** A transaction with a merkle branch linking it to the block chain. */
class CMerkleTx : public CTransaction
{
private:
int GetDepthInMainChainINTERNAL(CBlockIndex* &pindexRet) const;
public:
uint256 hashBlock;
std::vector<uint256> vMerkleBranch;
int nIndex;
// memory only
mutable bool fMerkleVerified;
CMerkleTx()
{
Init();
}
CMerkleTx(const CTransaction& txIn) : CTransaction(txIn)
{
Init();
}
void Init()
{
hashBlock = 0;
nIndex = -1;
fMerkleVerified = false;
}
IMPLEMENT_SERIALIZE
(
nSerSize += SerReadWrite(s, *(CTransaction*)this, nType, nVersion, ser_action);
nVersion = this->nVersion;
READWRITE(hashBlock);
READWRITE(vMerkleBranch);
READWRITE(nIndex);
)
int SetMerkleBranch(const CBlock* pblock=NULL);
// Return depth of transaction in blockchain:
// -1 : not in blockchain, and not in memory pool (conflicted transaction)
// 0 : in memory pool, waiting to be included in a block
// >=1 : this many blocks deep in the main chain
int GetDepthInMainChain(CBlockIndex* &pindexRet, bool enableIX=true) const;
int GetDepthInMainChain(bool enableIX=true) const { CBlockIndex *pindexRet; return GetDepthInMainChain(pindexRet, enableIX); }
bool IsInMainChain() const { CBlockIndex *pindexRet; return GetDepthInMainChainINTERNAL(pindexRet) > 0; }
int GetBlocksToMaturity() const;
bool AcceptToMemoryPool(bool fLimitFree=true, bool fRejectInsaneFee=true, bool ignoreFees=false);
int GetTransactionLockSignatures() const;
bool IsTransactionLockTimedOut() const;
};
/** A txdb record that contains the disk location of a transaction and the
* locations of transactions that spend its outputs. vSpent is really only
* used as a flag, but having the location is very helpful for debugging.
*/
class CTxIndex
{
public:
CDiskTxPos pos;
std::vector<CDiskTxPos> vSpent;
CTxIndex()
{
SetNull();
}
CTxIndex(const CDiskTxPos& posIn, unsigned int nOutputs)
{
pos = posIn;
vSpent.resize(nOutputs);
}
IMPLEMENT_SERIALIZE
(
if (!(nType & SER_GETHASH))
READWRITE(nVersion);
READWRITE(pos);
READWRITE(vSpent);
)
void SetNull()
{
pos.SetNull();
vSpent.clear();
}
bool IsNull()
{
return pos.IsNull();
}
friend bool operator==(const CTxIndex& a, const CTxIndex& b)
{
return (a.pos == b.pos &&
a.vSpent == b.vSpent);
}
friend bool operator!=(const CTxIndex& a, const CTxIndex& b)
{
return !(a == b);
}
int GetDepthInMainChain() const;
};
/** Nodes collect new transactions into a block, hash them into a hash tree,
* and scan through nonce values to make the block's hash satisfy proof-of-work
* requirements. When they solve the proof-of-work, they broadcast the block
* to everyone and the block is added to the block chain. The first transaction
* in the block is a special one that creates a new coin owned by the creator
* of the block.
*
* Blocks are appended to blk0001.dat files on disk. Their location on disk
* is indexed by CBlockIndex objects in memory.
*/
class CBlock
{
public:
// header
static const int CURRENT_VERSION = 7;
int nVersion;
uint256 hashPrevBlock;
uint256 hashMerkleRoot;
unsigned int nTime;
unsigned int nBits;
unsigned int nNonce;
// network and disk
std::vector<CTransaction> vtx;
// ppcoin: block signature - signed by one of the coin base txout[N]'s owner
std::vector<unsigned char> vchBlockSig;
// memory only
mutable std::vector<uint256> vMerkleTree;
// Denial-of-service detection:
mutable int nDoS;
bool DoS(int nDoSIn, bool fIn) const { nDoS += nDoSIn; return fIn; }
CBlock()
{
SetNull();
}
IMPLEMENT_SERIALIZE
(
READWRITE(this->nVersion);
nVersion = this->nVersion;
READWRITE(hashPrevBlock);
READWRITE(hashMerkleRoot);
READWRITE(nTime);
READWRITE(nBits);
READWRITE(nNonce);
// ConnectBlock depends on vtx following header to generate CDiskTxPos
if (!(nType & (SER_GETHASH|SER_BLOCKHEADERONLY)))
{
READWRITE(vtx);
READWRITE(vchBlockSig);
}
else if (fRead)
{
const_cast<CBlock*>(this)->vtx.clear();
const_cast<CBlock*>(this)->vchBlockSig.clear();
}
)
void SetNull()
{
nVersion = CBlock::CURRENT_VERSION;
hashPrevBlock = 0;
hashMerkleRoot = 0;
nTime = 0;
nBits = 0;
nNonce = 0;
vtx.clear();
vchBlockSig.clear();
vMerkleTree.clear();
nDoS = 0;
}
bool IsNull() const
{
return (nBits == 0);
}
uint256 GetHash() const
{
if (nVersion > 6)
return Hash(BEGIN(nVersion), END(nNonce));
else
return GetPoWHash();
}
uint256 GetPoWHash() const
{
return Hash9(BEGIN(nVersion), END(nNonce));
}
int64_t GetBlockTime() const
{
return (int64_t)nTime;
}
void UpdateTime(const CBlockIndex* pindexPrev);
// entropy bit for stake modifier if chosen by modifier
unsigned int GetStakeEntropyBit() const
{
// Take last bit of block hash as entropy bit
unsigned int nEntropyBit = ((GetHash().Get64()) & 1llu);
LogPrint("stakemodifier", "GetStakeEntropyBit: hashBlock=%s nEntropyBit=%u\n", GetHash().ToString(), nEntropyBit);
return nEntropyBit;
}
// ppcoin: two types of block: proof-of-work or proof-of-stake
bool IsProofOfStake() const
{
return (vtx.size() > 1 && vtx[1].IsCoinStake());
}
bool IsProofOfWork() const
{
return !IsProofOfStake();
}
std::pair<COutPoint, unsigned int> GetProofOfStake() const
{
return IsProofOfStake()? std::make_pair(vtx[1].vin[0].prevout, vtx[1].nTime) : std::make_pair(COutPoint(), (unsigned int)0);
}
// ppcoin: get max transaction timestamp
int64_t GetMaxTransactionTime() const
{
int64_t maxTransactionTime = 0;
BOOST_FOREACH(const CTransaction& tx, vtx)
maxTransactionTime = std::max(maxTransactionTime, (int64_t)tx.nTime);
return maxTransactionTime;
}
uint256 BuildMerkleTree() const
{
vMerkleTree.clear();
BOOST_FOREACH(const CTransaction& tx, vtx)
vMerkleTree.push_back(tx.GetHash());
int j = 0;
for (int nSize = vtx.size(); nSize > 1; nSize = (nSize + 1) / 2)
{
for (int i = 0; i < nSize; i += 2)
{
int i2 = std::min(i+1, nSize-1);
vMerkleTree.push_back(Hash(BEGIN(vMerkleTree[j+i]), END(vMerkleTree[j+i]),
BEGIN(vMerkleTree[j+i2]), END(vMerkleTree[j+i2])));
}
j += nSize;
}
return (vMerkleTree.empty() ? 0 : vMerkleTree.back());
}
std::vector<uint256> GetMerkleBranch(int nIndex) const
{
if (vMerkleTree.empty())
BuildMerkleTree();
std::vector<uint256> vMerkleBranch;
int j = 0;
for (int nSize = vtx.size(); nSize > 1; nSize = (nSize + 1) / 2)
{
int i = std::min(nIndex^1, nSize-1);
vMerkleBranch.push_back(vMerkleTree[j+i]);
nIndex >>= 1;
j += nSize;
}
return vMerkleBranch;
}
static uint256 CheckMerkleBranch(uint256 hash, const std::vector<uint256>& vMerkleBranch, int nIndex)
{
if (nIndex == -1)
return 0;
BOOST_FOREACH(const uint256& otherside, vMerkleBranch)
{
if (nIndex & 1)
hash = Hash(BEGIN(otherside), END(otherside), BEGIN(hash), END(hash));
else
hash = Hash(BEGIN(hash), END(hash), BEGIN(otherside), END(otherside));
nIndex >>= 1;
}
return hash;
}
bool WriteToDisk(unsigned int& nFileRet, unsigned int& nBlockPosRet)
{
// Open history file to append
CAutoFile fileout = CAutoFile(AppendBlockFile(nFileRet), SER_DISK, CLIENT_VERSION);
if (!fileout)
return error("CBlock::WriteToDisk() : AppendBlockFile failed");
// Write index header
unsigned int nSize = fileout.GetSerializeSize(*this);
fileout << FLATDATA(Params().MessageStart()) << nSize;
// Write block
long fileOutPos = ftell(fileout);
if (fileOutPos < 0)
return error("CBlock::WriteToDisk() : ftell failed");
nBlockPosRet = fileOutPos;
fileout << *this;
// Flush stdio buffers and commit to disk before returning
fflush(fileout);
if (!IsInitialBlockDownload() || (nBestHeight+1) % 500 == 0)
FileCommit(fileout);
return true;
}
bool ReadFromDisk(unsigned int nFile, unsigned int nBlockPos, bool fReadTransactions=true)
{
SetNull();
// Open history file to read
CAutoFile filein = CAutoFile(OpenBlockFile(nFile, nBlockPos, "rb"), SER_DISK, CLIENT_VERSION);
if (!filein)
return error("CBlock::ReadFromDisk() : OpenBlockFile failed");
if (!fReadTransactions)
filein.nType |= SER_BLOCKHEADERONLY;
// Read block
try {
filein >> *this;
}
catch (std::exception &e) {
return error("%s() : deserialize or I/O error", __PRETTY_FUNCTION__);
}
// Check the header
if (fReadTransactions && IsProofOfWork() && !CheckProofOfWork(GetPoWHash(), nBits))
return error("CBlock::ReadFromDisk() : errors in block header");
return true;
}
std::string ToString() const
{
std::stringstream s;
s << strprintf("CBlock(hash=%s, ver=%d, hashPrevBlock=%s, hashMerkleRoot=%s, nTime=%u, nBits=%08x, nNonce=%u, vtx=%u, vchBlockSig=%s)\n",
GetHash().ToString(),
nVersion,
hashPrevBlock.ToString(),
hashMerkleRoot.ToString(),
nTime, nBits, nNonce,
vtx.size(),
HexStr(vchBlockSig.begin(), vchBlockSig.end()));
for (unsigned int i = 0; i < vtx.size(); i++)
{
s << " " << vtx[i].ToString() << "\n";
}
s << " vMerkleTree: ";
for (unsigned int i = 0; i < vMerkleTree.size(); i++)
s << " " << vMerkleTree[i].ToString();
s << "\n";
return s.str();
}
bool DisconnectBlock(CTxDB& txdb, CBlockIndex* pindex);
bool ConnectBlock(CTxDB& txdb, CBlockIndex* pindex, bool fJustCheck=false);
bool ReadFromDisk(const CBlockIndex* pindex, bool fReadTransactions=true);
bool SetBestChain(CTxDB& txdb, CBlockIndex* pindexNew);
bool AddToBlockIndex(unsigned int nFile, unsigned int nBlockPos, const uint256& hashProof);
bool CheckBlock(bool fCheckPOW=true, bool fCheckMerkleRoot=true, bool fCheckSig=true) const;
bool AcceptBlock();
bool SignBlock(CWallet& keystore, int64_t nFees);
bool CheckBlockSignature() const;
void RebuildAddressIndex(CTxDB& txdb);
private:
bool SetBestChainInner(CTxDB& txdb, CBlockIndex *pindexNew);
};
// TAO
struct CDiskBlockPos
{
int nFile;
unsigned int nPos;
IMPLEMENT_SERIALIZE (
READWRITE(VARINT(nFile));
READWRITE(VARINT(nPos));
)
CDiskBlockPos() {
SetNull();
}
CDiskBlockPos(int nFileIn, unsigned int nPosIn) {
nFile = nFileIn;
nPos = nPosIn;
}
friend bool operator==(const CDiskBlockPos &a, const CDiskBlockPos &b) {
return (a.nFile == b.nFile && a.nPos == b.nPos);
}
friend bool operator!=(const CDiskBlockPos &a, const CDiskBlockPos &b) {
return !(a == b);
}
void SetNull() { nFile = -1; nPos = 0; }
bool IsNull() const { return (nFile == -1); }
std::string ToString() const
{
return strprintf("CBlockDiskPos(nFile=%i, nPos=%i)", nFile, nPos);
}