Branch data Line data Source code
1 : : // Copyright (c) 2019-2022 The Bitcoin Core developers
2 : : // Distributed under the MIT software license, see the accompanying
3 : : // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 : :
5 : : #include <test/util/mining.h>
6 : :
7 : : #include <chainparams.h>
8 : : #include <consensus/merkle.h>
9 : : #include <consensus/validation.h>
10 : : #include <key_io.h>
11 [ + - ]: 2 : #include <node/context.h>
12 [ + - ]: 2 : #include <pow.h>
13 : 2 : #include <primitives/transaction.h>
14 [ + - ]: 2 : #include <test/util/script.h>
15 [ + - ][ + - ]: 2 : #include <util/check.h>
[ + - ]
16 : : #include <validation.h>
17 [ + - ]: 2 : #include <validationinterface.h>
18 [ + - ]: 2 : #include <versionbits.h>
19 : :
20 : : using node::BlockAssembler;
21 : : using node::NodeContext;
22 : :
23 : 0 : COutPoint generatetoaddress(const NodeContext& node, const std::string& address)
24 : : {
25 : 0 : const auto dest = DecodeDestination(address);
26 [ # # ][ # # ]: 0 : assert(IsValidDestination(dest));
27 [ # # ]: 0 : const auto coinbase_script = GetScriptForDestination(dest);
28 : :
29 [ # # ]: 0 : return MineBlock(node, coinbase_script);
30 : 0 : }
31 : :
32 : 0 : std::vector<std::shared_ptr<CBlock>> CreateBlockChain(size_t total_height, const CChainParams& params)
33 : : {
34 [ # # ]: 0 : std::vector<std::shared_ptr<CBlock>> ret{total_height};
35 [ # # ]: 0 : auto time{params.GenesisBlock().nTime};
36 [ # # ]: 0 : for (size_t height{0}; height < total_height; ++height) {
37 [ # # ][ # # ]: 0 : CBlock& block{*(ret.at(height) = std::make_shared<CBlock>())};
38 : :
39 [ # # ]: 0 : CMutableTransaction coinbase_tx;
40 [ # # ]: 0 : coinbase_tx.vin.resize(1);
41 [ # # ]: 0 : coinbase_tx.vin[0].prevout.SetNull();
42 [ # # ]: 0 : coinbase_tx.vout.resize(1);
43 [ # # ]: 0 : coinbase_tx.vout[0].scriptPubKey = P2WSH_OP_TRUE;
44 [ # # ][ # # ]: 0 : coinbase_tx.vout[0].nValue = GetBlockSubsidy(height + 1, params.GetConsensus());
45 [ # # ][ # # ]: 0 : coinbase_tx.vin[0].scriptSig = CScript() << (height + 1) << OP_0;
[ # # ][ # # ]
46 [ # # ][ # # ]: 0 : block.vtx = {MakeTransactionRef(std::move(coinbase_tx))};
47 : :
48 : 0 : block.nVersion = VERSIONBITS_LAST_OLD_BLOCK_VERSION;
49 [ # # ][ # # ]: 0 : block.hashPrevBlock = (height >= 1 ? *ret.at(height - 1) : params.GenesisBlock()).GetHash();
[ # # ][ # # ]
50 [ # # ]: 0 : block.hashMerkleRoot = BlockMerkleRoot(block);
51 : 0 : block.nTime = ++time;
52 [ # # ]: 0 : block.nBits = params.GenesisBlock().nBits;
53 : 0 : block.nNonce = 0;
54 : :
55 [ # # ][ # # ]: 0 : while (!CheckProofOfWork(block.GetHash(), block.nBits, params.GetConsensus())) {
[ # # ][ # # ]
56 : 0 : ++block.nNonce;
57 [ # # ]: 0 : assert(block.nNonce);
58 : : }
59 : 0 : }
60 : 0 : return ret;
61 [ # # ]: 0 : }
62 : :
63 : 0 : COutPoint MineBlock(const NodeContext& node, const CScript& coinbase_scriptPubKey)
64 : : {
65 : 0 : auto block = PrepareBlock(node, coinbase_scriptPubKey);
66 [ # # ]: 0 : auto valid = MineBlock(node, block);
67 [ # # ][ # # ]: 0 : assert(!valid.IsNull());
68 : : return valid;
69 : 0 : }
70 : :
71 : 0 : struct BlockValidationStateCatcher : public CValidationInterface {
72 : : const uint256 m_hash;
73 : : std::optional<BlockValidationState> m_state;
74 : :
75 : 0 : BlockValidationStateCatcher(const uint256& hash)
76 : 0 : : m_hash{hash},
77 : 0 : m_state{} {}
78 : :
79 : : protected:
80 : 0 : void BlockChecked(const CBlock& block, const BlockValidationState& state) override
81 : : {
82 [ # # ]: 0 : if (block.GetHash() != m_hash) return;
83 : 0 : m_state = state;
84 : 0 : }
85 : : };
86 : :
87 : 0 : COutPoint MineBlock(const NodeContext& node, std::shared_ptr<CBlock>& block)
88 : : {
89 [ # # ]: 0 : while (!CheckProofOfWork(block->GetHash(), block->nBits, Params().GetConsensus())) {
90 : 0 : ++block->nNonce;
91 [ # # ]: 0 : assert(block->nNonce);
92 : : }
93 : :
94 : 0 : auto& chainman{*Assert(node.chainman)};
95 [ # # ]: 0 : const auto old_height = WITH_LOCK(chainman.GetMutex(), return chainman.ActiveHeight());
96 : : bool new_block;
97 : 0 : BlockValidationStateCatcher bvsc{block->GetHash()};
98 [ # # ]: 0 : RegisterValidationInterface(&bvsc);
99 [ # # ]: 0 : const bool processed{chainman.ProcessNewBlock(block, true, true, &new_block)};
100 [ # # ]: 0 : const bool duplicate{!new_block && processed};
101 [ # # ]: 0 : assert(!duplicate);
102 [ # # ]: 0 : UnregisterValidationInterface(&bvsc);
103 [ # # ]: 0 : SyncWithValidationInterfaceQueue();
104 [ # # ][ # # ]: 0 : const bool was_valid{bvsc.m_state && bvsc.m_state->IsValid()};
105 [ # # ][ # # ]: 0 : assert(old_height + was_valid == WITH_LOCK(chainman.GetMutex(), return chainman.ActiveHeight()));
[ # # ][ # # ]
[ # # ]
106 : :
107 [ # # ][ # # ]: 0 : if (was_valid) return {block->vtx[0]->GetHash(), 0};
[ # # ][ # # ]
108 [ # # ]: 0 : return {};
109 : 0 : }
110 : :
111 : 0 : std::shared_ptr<CBlock> PrepareBlock(const NodeContext& node, const CScript& coinbase_scriptPubKey,
112 : : const BlockAssembler::Options& assembler_options)
113 : : {
114 [ # # ]: 0 : auto block = std::make_shared<CBlock>(
115 : 0 : BlockAssembler{Assert(node.chainman)->ActiveChainstate(), Assert(node.mempool.get()), assembler_options}
116 [ # # ]: 0 : .CreateNewBlock(coinbase_scriptPubKey)
117 : 0 : ->block);
118 : :
119 [ # # ][ # # ]: 0 : LOCK(cs_main);
120 [ # # ][ # # ]: 0 : block->nTime = Assert(node.chainman)->ActiveChain().Tip()->GetMedianTimePast() + 1;
[ # # ][ # # ]
121 [ # # ]: 0 : block->hashMerkleRoot = BlockMerkleRoot(*block);
122 : :
123 : 0 : return block;
124 [ # # ]: 0 : }
125 : 0 : std::shared_ptr<CBlock> PrepareBlock(const NodeContext& node, const CScript& coinbase_scriptPubKey)
126 : : {
127 : 0 : BlockAssembler::Options assembler_options;
128 : 0 : ApplyArgsManOptions(*node.args, assembler_options);
129 : 0 : return PrepareBlock(node, coinbase_scriptPubKey, assembler_options);
130 : : }
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