Hush Full Node software. We were censored from Github, this is where all development happens now.
https://hush.is
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116 lines
3.2 KiB
116 lines
3.2 KiB
// Copyright (c) 2018 The Zcash developers
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// Copyright (c) 2016-2024 The Hush developers
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// Distributed under the GPLv3 software license, see the accompanying
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// file COPYING or https://www.gnu.org/licenses/gpl-3.0.en.html
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#ifndef TRANSACTION_BUILDER_H
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#define TRANSACTION_BUILDER_H
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#include "consensus/params.h"
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#include "keystore.h"
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#include "primitives/transaction.h"
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#include "script/script.h"
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#include "script/standard.h"
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#include "uint256.h"
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#include "zcash/Address.hpp"
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#include "zcash/IncrementalMerkleTree.hpp"
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#include "zcash/Note.hpp"
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#include "zcash/NoteEncryption.hpp"
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#include <boost/optional.hpp>
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struct SpendDescriptionInfo {
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libzcash::SaplingExpandedSpendingKey expsk;
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libzcash::SaplingNote note;
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uint256 alpha;
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uint256 anchor;
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SaplingWitness witness;
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SpendDescriptionInfo(
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libzcash::SaplingExpandedSpendingKey expsk,
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libzcash::SaplingNote note,
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uint256 anchor,
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SaplingWitness witness);
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};
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struct OutputDescriptionInfo {
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uint256 ovk;
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libzcash::SaplingNote note;
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std::array<unsigned char, HUSH_MEMO_SIZE> memo;
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OutputDescriptionInfo(
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uint256 ovk,
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libzcash::SaplingNote note,
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std::array<unsigned char, HUSH_MEMO_SIZE> memo) : ovk(ovk), note(note), memo(memo) {}
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};
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struct TransparentInputInfo {
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CScript scriptPubKey;
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CAmount value;
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TransparentInputInfo(
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CScript scriptPubKey,
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CAmount value) : scriptPubKey(scriptPubKey), value(value) {}
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};
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class TransactionBuilder
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{
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private:
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Consensus::Params consensusParams;
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int nHeight;
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const CKeyStore* keystore;
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CMutableTransaction mtx;
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CAmount fee = 10000;
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std::vector<SpendDescriptionInfo> spends;
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std::vector<OutputDescriptionInfo> outputs;
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std::vector<TransparentInputInfo> tIns;
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boost::optional<std::pair<uint256, libzcash::SaplingPaymentAddress>> zChangeAddr;
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boost::optional<CTxDestination> tChangeAddr;
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boost::optional<CScript> opReturn;
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bool AddOpRetLast(CScript &s);
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public:
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TransactionBuilder() {}
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TransactionBuilder(const Consensus::Params& consensusParams, int nHeight, CKeyStore* keyStore = nullptr);
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void SetFee(CAmount fee);
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void SetExpiryHeight(int nHeight);
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// Returns false if the anchor does not match the anchor used by
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// previously-added Sapling spends.
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bool AddSaplingSpend(
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libzcash::SaplingExpandedSpendingKey expsk,
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libzcash::SaplingNote note,
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uint256 anchor,
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SaplingWitness witness);
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void AddSaplingOutput(
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uint256 ovk,
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libzcash::SaplingPaymentAddress to,
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CAmount value,
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std::array<unsigned char, HUSH_MEMO_SIZE> memo = {{0}});
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void ShuffleOutputs();
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// Assumes that the value correctly corresponds to the provided UTXO.
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void AddTransparentInput(COutPoint utxo, CScript scriptPubKey, CAmount value, uint32_t nSequence = 0xffffffff);
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bool AddTransparentOutput(CTxDestination& to, CAmount value);
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void AddOpRet(CScript &s);
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bool AddOpRetLast();
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void SendChangeTo(libzcash::SaplingPaymentAddress changeAddr, uint256 ovk);
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bool SendChangeTo(CTxDestination& changeAddr);
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void SetLockTime(uint32_t time) { this->mtx.nLockTime = time; }
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boost::optional<CTransaction> Build();
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};
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#endif /* TRANSACTION_BUILDER_H */
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