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48 lines
2.8 KiB
C++
48 lines
2.8 KiB
C++
// Copyright (c) 2017-2018 The Bitcoin Core developers
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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_PEGINS_H
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#define BITCOIN_PEGINS_H
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#include <amount.h>
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#include <consensus/params.h>
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#include <merkleblock.h>
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#include <primitives/bitcoin/transaction.h>
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#include <primitives/bitcoin/merkleblock.h>
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#include <primitives/transaction.h>
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#include <script/script.h>
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#include <chain.h>
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/** Calculates script necessary for p2ch peg-in transactions */
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CScript calculate_contract(const CScript& federationRedeemScript, const CScript& witnessProgram);
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bool GetAmountFromParentChainPegin(CAmount& amount, const Sidechain::Bitcoin::CTransaction& txBTC, unsigned int nOut);
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bool GetAmountFromParentChainPegin(CAmount& amount, const CTransaction& txBTC, unsigned int nOut);
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/** Check whether a parent chain block hash satisfies the proof-of-work requirement specified by nBits */
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bool CheckParentProofOfWork(uint256 hash, unsigned int nBits, const Consensus::Params&);
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/** Checks pegin witness for validity */
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bool IsValidPeginWitness(const CScriptWitness& pegin_witness, const std::vector<std::pair<CScript, CScript>>& fedpegscripts, const COutPoint& prevout, std::string& err_msg, bool check_depth);
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// Constructs unblinded output to be used in amount and scriptpubkey checks during pegin
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CTxOut GetPeginOutputFromWitness(const CScriptWitness& pegin_witness);
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/* Consensus-critical. Matching against telescoped multisig used on Liquid v1:
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* Pseudo-structure:
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* Check number of elements on stack
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* If enough for federation multisig, push all multisig args onto stack except OP_CMS
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* If not, check CSV timeout, then if successful, push emergency key multisig args on
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* stack except OP_CMS. End if, then push OP_CMS.
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*/
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bool MatchLiquidWatchman(const CScript& script);
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/** Get full fedpegscripts from two previous epoch starts based on given index
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* nextblock_validation is false when doing block validation, true for mempool
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* or "lookahead" purposes. Newest epochs first. The first returned element is the
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* scriptPubKey for the script, the second is the witnessScript. */
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std::vector<std::pair<CScript, CScript>> GetValidFedpegScripts(const CBlockIndex* pblockindex, const Consensus::Params& params, bool nextblock_validation);
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/** Create the peg-in witness stack */
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CScriptWitness CreatePeginWitness(const CAmount& value, const CAsset& asset, const uint256& genesis_hash, const CScript& claim_script, const CTransactionRef& tx_ref, const CMerkleBlock& merkle_block);
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CScriptWitness CreatePeginWitness(const CAmount& value, const CAsset& asset, const uint256& genesis_hash, const CScript& claim_script, const Sidechain::Bitcoin::CTransactionRef& tx_ref, const Sidechain::Bitcoin::CMerkleBlock& merkle_block);
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#endif // BITCOIN_PEGINS_H
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