ce564e381a
Changes are as below: Wrap CBlockHeader::nVersion into a new class (CBlockVersion). This allows to take care of interpreting the field into a base version, auxpow flag and the chain ID. Update getauxblock.py for new 'generate' RPC call. Add 'auxpow' to block JSON. Accept auxpow as PoW verification. Add unit tests for auxpow verification. Add check for memory-layout of CBlockVersion. Weaken auxpow chain ID checks for the testnet. Allow Params() to overrule when to check the auxpow chain ID and for legacy blocks. Use this to disable the checks on testnet. Introduce CPureBlockHeader. Split the block header part that is used by auxpow and the "real" block header (that uses auxpow) to resolve the cyclic dependency between the two. Differentiate between uint256 and arith_uint256. This change was done upstream, modify the auxpow code. Add missing lock in auxpow_tests. Fix REST header check for auxpow headers. Those can be longer, thus take that into account. Also perform the check actually on an auxpow header. Correctly set the coinbase for getauxblock results. Call IncrementExtraNonce in getauxblock so that the coinbase is actually initialised with the stuff it should be. (BIP30 block height and COINBASE_FLAGS.) Implement getauxblock plus regression test. Turn auxpow test into FIXTURE test. This allows using of the Params() calls. Move CMerkleTx code to auxpow.cpp. Otherwise we get linker errors when building without wallet. Fix rebase with BIP66. Update the code to handle BIP66's nVersion=3. Enforce that auxpow parent blocks have no auxpow block version. This is for compatibility with namecoind. See also https://github.com/namecoin/namecoin/pull/199. Move auxpow-related parameters to Consensus::Params.
96 lines
2.9 KiB
C++
96 lines
2.9 KiB
C++
// Copyright (c) 2018 Daniel Kraft
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_RPC_AUXPOW_MINER_H
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#define BITCOIN_RPC_AUXPOW_MINER_H
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#include <miner.h>
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#include <script/script.h>
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#include <sync.h>
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#include <uint256.h>
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#include <univalue.h>
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#include <map>
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#include <memory>
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#include <string>
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#include <vector>
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namespace auxpow_tests
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{
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class AuxpowMinerForTest;
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}
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/**
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* This class holds "global" state used to construct blocks for the auxpow
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* mining RPCs and the map of already constructed blocks to look them up
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* in the submitauxblock RPC.
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*
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* It is used as a singleton that is initialised during startup, taking the
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* place of the previously real global and static variables.
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*/
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class AuxpowMiner
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{
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private:
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/** The lock used for state in this object. */
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mutable CCriticalSection cs;
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/** All currently "active" block templates. */
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std::vector<std::unique_ptr<CBlockTemplate>> templates;
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/** Maps block hashes to pointers in vTemplates. Does not own the memory. */
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std::map<uint256, const CBlock*> blocks;
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/**
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* The block we are "currently" working on. This does not own the memory,
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* instead, it points into an element of templates.
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*/
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CBlock* pblockCur = nullptr;
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/** The current extra nonce for block creation. */
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unsigned extraNonce = 0;
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/* Some data about when the current block (pblock) was constructed. */
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unsigned txUpdatedLast;
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const CBlockIndex* pindexPrev = nullptr;
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uint64_t startTime;
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/**
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* Constructs a new current block if necessary (checking the current state to
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* see if "enough changed" for this), and returns a pointer to the block
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* that should be returned to a miner for working on at the moment. Also
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* fills in the difficulty target value.
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*/
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const CBlock* getCurrentBlock (const CScript& scriptPubKey, uint256& target);
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/**
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* Looks up a previously constructed block by its (hex-encoded) hash. If the
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* block is found, it is returned. Otherwise, a JSONRPCError is thrown.
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*/
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const CBlock* lookupSavedBlock (const std::string& hashHex) const;
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friend class auxpow_tests::AuxpowMinerForTest;
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public:
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AuxpowMiner () = default;
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/**
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* Performs the main work for the "createauxblock" RPC: Construct a new block
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* to work on with the given address for the block reward and return the
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* necessary information for the miner to construct an auxpow for it.
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*/
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UniValue createAuxBlock (const CScript& scriptPubKey);
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/**
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* Performs the main work for the "submitauxblock" RPC: Look up the block
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* previously created for the given hash, attach the given auxpow to it
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* and try to submit it. Returns true if all was successful and the block
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* was accepted.
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*/
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bool submitAuxBlock (const std::string& hashHex,
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const std::string& auxpowHex) const;
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};
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#endif // BITCOIN_RPC_AUXPOW_MINER_H
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