Hush Full Node software. We were censored from Github, this is where all development happens now.
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378 lines
12 KiB
378 lines
12 KiB
// Copyright (c) 2017 The Zcash developers
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// Copyright (c) 2019-2020 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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/******************************************************************************
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* Copyright © 2014-2019 The SuperNET Developers. *
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* *
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* See the AUTHORS, DEVELOPER-AGREEMENT and LICENSE files at *
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* the top-level directory of this distribution for the individual copyright *
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* holder information and the developer policies on copyright and licensing. *
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* *
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* Unless otherwise agreed in a custom licensing agreement, no part of the *
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* SuperNET software, including this file may be copied, modified, propagated *
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* or distributed except according to the terms contained in the LICENSE file *
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* *
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* Removal or modification of this copyright notice is prohibited. *
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* *
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******************************************************************************/
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#include "asyncrpcqueue.h"
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#include "amount.h"
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#include "consensus/upgrades.h"
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#include "core_io.h"
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#include "init.h"
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#include "key_io.h"
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#include "main.h"
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#include "net.h"
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#include "netbase.h"
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#include "rpc/protocol.h"
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#include "rpc/server.h"
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#include "timedata.h"
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#include "util.h"
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#include "utilmoneystr.h"
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#include "wallet.h"
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#include "walletdb.h"
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#include "script/interpreter.h"
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#include "utiltime.h"
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#include "zcash/IncrementalMerkleTree.hpp"
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#include "sodium.h"
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#include "miner.h"
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#include <array>
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#include <iostream>
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#include <chrono>
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#include <thread>
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#include <string>
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#include "asyncrpcoperation_shieldcoinbase.h"
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using namespace libzcash;
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extern uint64_t ASSETCHAINS_TIMELOCKGTE;
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AsyncRPCOperation_shieldcoinbase::AsyncRPCOperation_shieldcoinbase(
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TransactionBuilder builder,
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CMutableTransaction contextualTx,
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std::vector<ShieldCoinbaseUTXO> inputs,
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std::string toAddress,
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CAmount fee,
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UniValue contextInfo) :
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builder_(builder), tx_(contextualTx), inputs_(inputs), fee_(fee), contextinfo_(contextInfo)
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{
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assert(contextualTx.nVersion >= 2); // transaction format version must support vjoinsplit
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if (fee < 0 || fee > MAX_MONEY) {
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throw JSONRPCError(RPC_INVALID_PARAMETER, "Fee is out of range");
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}
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if (inputs.size() == 0) {
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throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS, "Empty inputs");
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}
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// Check the destination address is valid for this network i.e. not testnet being used on mainnet
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auto address = DecodePaymentAddress(toAddress);
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if (IsValidPaymentAddress(address)) {
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tozaddr_ = address;
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} else {
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throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid to address");
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}
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// Log the context info
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if (LogAcceptCategory("zrpcunsafe")) {
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LogPrint("zrpcunsafe", "%s: z_shieldcoinbase initialized (context=%s)\n", getId(), contextInfo.write());
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} else {
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LogPrint("zrpc", "%s: z_shieldcoinbase initialized\n", getId());
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}
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// Lock UTXOs
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lock_utxos();
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}
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AsyncRPCOperation_shieldcoinbase::~AsyncRPCOperation_shieldcoinbase() {
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}
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void AsyncRPCOperation_shieldcoinbase::main() {
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if (isCancelled()) {
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unlock_utxos(); // clean up
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return;
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}
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set_state(OperationStatus::EXECUTING);
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start_execution_clock();
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bool success = false;
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#ifdef ENABLE_MINING
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#ifdef ENABLE_WALLET
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GenerateBitcoins(false, NULL, 0);
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#else
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GenerateBitcoins(false, 0);
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#endif
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#endif
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try {
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success = main_impl();
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} catch (const UniValue& objError) {
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int code = find_value(objError, "code").get_int();
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std::string message = find_value(objError, "message").get_str();
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set_error_code(code);
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set_error_message(message);
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} catch (const runtime_error& e) {
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set_error_code(-1);
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set_error_message("runtime error: " + string(e.what()));
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} catch (const logic_error& e) {
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set_error_code(-1);
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set_error_message("logic error: " + string(e.what()));
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} catch (const exception& e) {
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set_error_code(-1);
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set_error_message("general exception: " + string(e.what()));
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} catch (...) {
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set_error_code(-2);
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set_error_message("unknown error");
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}
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#ifdef ENABLE_MINING
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#ifdef ENABLE_WALLET
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GenerateBitcoins(GetBoolArg("-gen",false), pwalletMain, GetArg("-genproclimit", 1));
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#else
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GenerateBitcoins(GetBoolArg("-gen",false), GetArg("-genproclimit", 1));
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#endif
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#endif
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stop_execution_clock();
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if (success) {
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set_state(OperationStatus::SUCCESS);
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} else {
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set_state(OperationStatus::FAILED);
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}
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std::string s = strprintf("%s: z_shieldcoinbase finished (status=%s", getId(), getStateAsString());
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if (success) {
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s += strprintf(", txid=%s)\n", tx_.GetHash().ToString());
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} else {
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s += strprintf(", error=%s)\n", getErrorMessage());
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}
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LogPrintf("%s",s);
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unlock_utxos(); // clean up
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}
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bool AsyncRPCOperation_shieldcoinbase::main_impl() {
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CAmount minersFee = fee_;
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size_t numInputs = inputs_.size();
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// Check mempooltxinputlimit to avoid creating a transaction which the local mempool rejects
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size_t limit = (size_t)GetArg("-mempooltxinputlimit", 0);
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{
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LOCK(cs_main);
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if (NetworkUpgradeActive(chainActive.Height() + 1, Params().GetConsensus(), Consensus::UPGRADE_OVERWINTER)) {
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limit = 0;
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}
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}
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if (limit>0 && numInputs > limit) {
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throw JSONRPCError(RPC_WALLET_ERROR,
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strprintf("Number of inputs %d is greater than mempooltxinputlimit of %d",
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numInputs, limit));
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}
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CAmount targetAmount = 0;
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for (ShieldCoinbaseUTXO & utxo : inputs_) {
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targetAmount += utxo.amount;
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}
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if (targetAmount <= minersFee) {
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throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS,
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strprintf("Insufficient coinbase funds, have %s and miners fee is %s",
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FormatMoney(targetAmount), FormatMoney(minersFee)));
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}
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CAmount sendAmount = targetAmount - minersFee;
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LogPrint("zrpc", "%s: spending %s to shield %s with fee %s\n",
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getId(), FormatMoney(targetAmount), FormatMoney(sendAmount), FormatMoney(minersFee));
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return boost::apply_visitor(ShieldToAddress(this, sendAmount), tozaddr_);
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}
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extern UniValue signrawtransaction(const UniValue& params, bool fHelp, const CPubKey& mypk);
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extern UniValue sendrawtransaction(const UniValue& params, bool fHelp, const CPubKey& mypk);
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bool ShieldToAddress::operator()(const libzcash::SaplingPaymentAddress &zaddr) const {
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m_op->builder_.SetFee(m_op->fee_);
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// Sending from a t-address, which we don't have an ovk for. Instead,
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// generate a common one from the HD seed. This ensures the data is
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// recoverable, while keeping it logically separate from the ZIP 32
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// Sapling key hierarchy, which the user might not be using.
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HDSeed seed;
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if (!pwalletMain->GetHDSeed(seed)) {
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throw JSONRPCError(
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RPC_WALLET_ERROR,
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"CWallet::GenerateNewSaplingZKey(): HD seed not found");
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}
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uint256 ovk = ovkForShieldingFromTaddr(seed);
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// Add transparent inputs
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for (auto t : m_op->inputs_) {
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if (t.amount >= ASSETCHAINS_TIMELOCKGTE)
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{
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m_op->builder_.SetLockTime((uint32_t)(chainActive.Height()));
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m_op->builder_.AddTransparentInput(COutPoint(t.txid, t.vout), t.scriptPubKey, t.amount, 0xfffffffe);
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}
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else
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{
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m_op->builder_.AddTransparentInput(COutPoint(t.txid, t.vout), t.scriptPubKey, t.amount);
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}
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}
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// Send all value to the target z-addr
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m_op->builder_.SendChangeTo(zaddr, ovk);
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// Build the transaction
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auto maybe_tx = m_op->builder_.Build();
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if (!maybe_tx) {
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throw JSONRPCError(RPC_WALLET_ERROR, "Failed to build transaction.");
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}
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m_op->tx_ = maybe_tx.get();
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// Send the transaction
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// TODO: Use CWallet::CommitTransaction instead of sendrawtransaction
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auto signedtxn = EncodeHexTx(m_op->tx_);
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if (!m_op->testmode) {
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UniValue params = UniValue(UniValue::VARR);
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params.push_back(signedtxn);
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UniValue sendResultValue = sendrawtransaction(params, false, CPubKey());
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if (sendResultValue.isNull()) {
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throw JSONRPCError(RPC_WALLET_ERROR, "sendrawtransaction did not return an error or a txid.");
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}
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auto txid = sendResultValue.get_str();
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UniValue o(UniValue::VOBJ);
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o.push_back(Pair("txid", txid));
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m_op->set_result(o);
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} else {
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// Test mode does not send the transaction to the network.
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UniValue o(UniValue::VOBJ);
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o.push_back(Pair("test", 1));
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o.push_back(Pair("txid", m_op->tx_.GetHash().ToString()));
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o.push_back(Pair("hex", signedtxn));
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m_op->set_result(o);
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}
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return true;
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}
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bool ShieldToAddress::operator()(const libzcash::InvalidEncoding& no) const {
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return false;
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}
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/**
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* Sign and send a raw transaction.
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* Raw transaction as hex string should be in object field "rawtxn"
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*/
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void AsyncRPCOperation_shieldcoinbase::sign_send_raw_transaction(UniValue obj)
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{
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// Sign the raw transaction
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UniValue rawtxnValue = find_value(obj, "rawtxn");
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if (rawtxnValue.isNull()) {
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throw JSONRPCError(RPC_WALLET_ERROR, "Missing hex data for raw transaction");
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}
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std::string rawtxn = rawtxnValue.get_str();
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UniValue params = UniValue(UniValue::VARR);
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params.push_back(rawtxn);
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UniValue signResultValue = signrawtransaction(params, false, CPubKey());
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UniValue signResultObject = signResultValue.get_obj();
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UniValue completeValue = find_value(signResultObject, "complete");
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bool complete = completeValue.get_bool();
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if (!complete) {
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// TODO: #1366 Maybe get "errors" and print array vErrors into a string
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throw JSONRPCError(RPC_WALLET_ENCRYPTION_FAILED, "Failed to sign transaction");
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}
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UniValue hexValue = find_value(signResultObject, "hex");
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if (hexValue.isNull()) {
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throw JSONRPCError(RPC_WALLET_ERROR, "Missing hex data for signed transaction");
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}
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std::string signedtxn = hexValue.get_str();
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// Send the signed transaction
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if (!testmode) {
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params.clear();
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params.setArray();
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params.push_back(signedtxn);
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UniValue sendResultValue = sendrawtransaction(params, false, CPubKey());
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if (sendResultValue.isNull()) {
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throw JSONRPCError(RPC_WALLET_ERROR, "Send raw transaction did not return an error or a txid.");
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}
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std::string txid = sendResultValue.get_str();
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UniValue o(UniValue::VOBJ);
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o.push_back(Pair("txid", txid));
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set_result(o);
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} else {
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// Test mode does not send the transaction to the network.
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CDataStream stream(ParseHex(signedtxn), SER_NETWORK, PROTOCOL_VERSION);
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CTransaction tx;
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stream >> tx;
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UniValue o(UniValue::VOBJ);
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o.push_back(Pair("test", 1));
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o.push_back(Pair("txid", tx.GetHash().ToString()));
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o.push_back(Pair("hex", signedtxn));
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set_result(o);
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}
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// Keep the signed transaction so we can hash to the same txid
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CDataStream stream(ParseHex(signedtxn), SER_NETWORK, PROTOCOL_VERSION);
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CTransaction tx;
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stream >> tx;
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tx_ = tx;
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}
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/**
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* Override getStatus() to append the operation's context object to the default status object.
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*/
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UniValue AsyncRPCOperation_shieldcoinbase::getStatus() const {
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UniValue v = AsyncRPCOperation::getStatus();
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if (contextinfo_.isNull()) {
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return v;
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}
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UniValue obj = v.get_obj();
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obj.push_back(Pair("method", "z_shieldcoinbase"));
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obj.push_back(Pair("params", contextinfo_ ));
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return obj;
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}
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/**
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* Lock input utxos
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*/
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void AsyncRPCOperation_shieldcoinbase::lock_utxos() {
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LOCK2(cs_main, pwalletMain->cs_wallet);
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for (auto utxo : inputs_) {
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COutPoint outpt(utxo.txid, utxo.vout);
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pwalletMain->LockCoin(outpt);
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}
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}
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/**
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* Unlock input utxos
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*/
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void AsyncRPCOperation_shieldcoinbase::unlock_utxos() {
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LOCK2(cs_main, pwalletMain->cs_wallet);
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for (auto utxo : inputs_) {
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COutPoint outpt(utxo.txid, utxo.vout);
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pwalletMain->UnlockCoin(outpt);
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}
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}
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