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
|
// Copyright (c) 2019-2022 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <test/util/mining.h>
#include <chainparams.h>
#include <consensus/merkle.h>
#include <consensus/validation.h>
#include <key_io.h>
#include <node/context.h>
#include <pow.h>
#include <primitives/transaction.h>
#include <script/standard.h>
#include <test/util/script.h>
#include <util/check.h>
#include <validation.h>
#include <validationinterface.h>
#include <versionbits.h>
using node::BlockAssembler;
using node::NodeContext;
COutPoint generatetoaddress(const NodeContext& node, const std::string& address)
{
const auto dest = DecodeDestination(address);
assert(IsValidDestination(dest));
const auto coinbase_script = GetScriptForDestination(dest);
return MineBlock(node, coinbase_script);
}
std::vector<std::shared_ptr<CBlock>> CreateBlockChain(size_t total_height, const CChainParams& params)
{
std::vector<std::shared_ptr<CBlock>> ret{total_height};
auto time{params.GenesisBlock().nTime};
for (size_t height{0}; height < total_height; ++height) {
CBlock& block{*(ret.at(height) = std::make_shared<CBlock>())};
CMutableTransaction coinbase_tx;
coinbase_tx.vin.resize(1);
coinbase_tx.vin[0].prevout.SetNull();
coinbase_tx.vout.resize(1);
coinbase_tx.vout[0].scriptPubKey = P2WSH_OP_TRUE;
coinbase_tx.vout[0].nValue = GetBlockSubsidy(height + 1, params.GetConsensus());
coinbase_tx.vin[0].scriptSig = CScript() << (height + 1) << OP_0;
block.vtx = {MakeTransactionRef(std::move(coinbase_tx))};
block.nVersion = VERSIONBITS_LAST_OLD_BLOCK_VERSION;
block.hashPrevBlock = (height >= 1 ? *ret.at(height - 1) : params.GenesisBlock()).GetHash();
block.hashMerkleRoot = BlockMerkleRoot(block);
block.nTime = ++time;
block.nBits = params.GenesisBlock().nBits;
block.nNonce = 0;
while (!CheckProofOfWork(block.GetHash(), block.nBits, params.GetConsensus())) {
++block.nNonce;
assert(block.nNonce);
}
}
return ret;
}
COutPoint MineBlock(const NodeContext& node, const CScript& coinbase_scriptPubKey)
{
auto block = PrepareBlock(node, coinbase_scriptPubKey);
auto valid = MineBlock(node, block);
assert(!valid.IsNull());
return valid;
}
struct BlockValidationStateCatcher : public CValidationInterface {
const uint256 m_hash;
std::optional<BlockValidationState> m_state;
BlockValidationStateCatcher(const uint256& hash)
: m_hash{hash},
m_state{} {}
protected:
void BlockChecked(const CBlock& block, const BlockValidationState& state) override
{
if (block.GetHash() != m_hash) return;
m_state = state;
}
};
COutPoint MineBlock(const NodeContext& node, std::shared_ptr<CBlock>& block)
{
while (!CheckProofOfWork(block->GetHash(), block->nBits, Params().GetConsensus())) {
++block->nNonce;
assert(block->nNonce);
}
auto& chainman{*Assert(node.chainman)};
const auto old_height = WITH_LOCK(chainman.GetMutex(), return chainman.ActiveHeight());
bool new_block;
BlockValidationStateCatcher bvsc{block->GetHash()};
RegisterValidationInterface(&bvsc);
const bool processed{chainman.ProcessNewBlock(block, true, true, &new_block)};
const bool duplicate{!new_block && processed};
assert(!duplicate);
UnregisterValidationInterface(&bvsc);
SyncWithValidationInterfaceQueue();
const bool was_valid{bvsc.m_state && bvsc.m_state->IsValid()};
assert(old_height + was_valid == WITH_LOCK(chainman.GetMutex(), return chainman.ActiveHeight()));
if (was_valid) return {block->vtx[0]->GetHash(), 0};
return {};
}
std::shared_ptr<CBlock> PrepareBlock(const NodeContext& node, const CScript& coinbase_scriptPubKey,
const BlockAssembler::Options& assembler_options)
{
auto block = std::make_shared<CBlock>(
BlockAssembler{Assert(node.chainman)->ActiveChainstate(), Assert(node.mempool.get()), assembler_options}
.CreateNewBlock(coinbase_scriptPubKey)
->block);
LOCK(cs_main);
block->nTime = Assert(node.chainman)->ActiveChain().Tip()->GetMedianTimePast() + 1;
block->hashMerkleRoot = BlockMerkleRoot(*block);
return block;
}
std::shared_ptr<CBlock> PrepareBlock(const NodeContext& node, const CScript& coinbase_scriptPubKey)
{
BlockAssembler::Options assembler_options;
ApplyArgsManOptions(*node.args, assembler_options);
return PrepareBlock(node, coinbase_scriptPubKey, assembler_options);
}
|
