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                 :            : struct BlockValidationStateCatcher : public CValidationInterface {
      72                 :            :     const uint256 m_hash;
      73                 :            :     std::optional<BlockValidationState> m_state;
      74                 :          2 : 
      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                 :            : }