Hush Full Node software. We were censored from Github, this is where all development happens now.
https://hush.is
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568 lines
20 KiB
568 lines
20 KiB
// Copyright (c) 2017 The Zcash developers
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// Copyright (c) 2016-2020 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 "asyncrpcoperation_mergetoaddress.h"
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#include "amount.h"
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#include "asyncrpcqueue.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 "miner.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 "script/interpreter.h"
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#include "sodium.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 "utiltime.h"
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#include "wallet.h"
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#include "walletdb.h"
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#include "zcash/IncrementalMerkleTree.hpp"
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#include <chrono>
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#include <iostream>
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#include <string>
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#include <thread>
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int32_t komodo_blockheight(uint256 hash);
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using namespace libzcash;
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extern UniValue sendrawtransaction(const UniValue& params, bool fHelp, const CPubKey& mypk);
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int mta_find_output(UniValue obj, int n)
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{
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UniValue outputMapValue = find_value(obj, "outputmap");
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if (!outputMapValue.isArray()) {
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throw JSONRPCError(RPC_WALLET_ERROR, "Missing outputmap for JoinSplit operation");
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}
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UniValue outputMap = outputMapValue.get_array();
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assert(outputMap.size() == HUSH_NUM_JS_OUTPUTS);
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for (size_t i = 0; i < outputMap.size(); i++) {
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if (outputMap[i].get_int() == n) {
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return i;
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}
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}
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throw std::logic_error("n is not present in outputmap");
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}
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AsyncRPCOperation_mergetoaddress::AsyncRPCOperation_mergetoaddress(
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boost::optional<TransactionBuilder> builder,
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CMutableTransaction contextualTx,
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std::vector<MergeToAddressInputUTXO> utxoInputs,
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std::vector<MergeToAddressInputSaplingNote> saplingNoteInputs,
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MergeToAddressRecipient recipient,
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CAmount fee,
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UniValue contextInfo) :
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tx_(contextualTx), utxoInputs_(utxoInputs), saplingNoteInputs_(saplingNoteInputs), recipient_(recipient), fee_(fee), contextinfo_(contextInfo)
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{
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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 (utxoInputs.empty() && saplingNoteInputs.empty()) {
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throw JSONRPCError(RPC_INVALID_PARAMETER, "No inputs");
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}
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if (std::get<0>(recipient).size() == 0) {
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throw JSONRPCError(RPC_INVALID_PARAMETER, "Recipient parameter missing");
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}
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isUsingBuilder_ = false;
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if (builder) {
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isUsingBuilder_ = true;
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builder_ = builder.get();
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}
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toTaddr_ = DecodeDestination(std::get<0>(recipient));
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isToTaddr_ = IsValidDestination(toTaddr_);
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isToZaddr_ = false;
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if (!isToTaddr_) {
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auto address = DecodePaymentAddress(std::get<0>(recipient));
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if (IsValidPaymentAddress(address)) {
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isToZaddr_ = true;
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toPaymentAddress_ = address;
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} else {
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throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid recipient address");
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}
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}
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// Log the context info i.e. the call parameters to z_mergetoaddress
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if (LogAcceptCategory("zrpcunsafe")) {
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LogPrint("zrpcunsafe", "%s: z_mergetoaddress initialized (params=%s)\n", getId(), contextInfo.write());
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} else {
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LogPrint("zrpc", "%s: z_mergetoaddress initialized\n", getId());
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}
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// Lock UTXOs
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lock_utxos();
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lock_notes();
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}
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AsyncRPCOperation_mergetoaddress::~AsyncRPCOperation_mergetoaddress()
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{
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}
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void AsyncRPCOperation_mergetoaddress::main()
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{
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if (isCancelled()) {
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unlock_utxos(); // clean up
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unlock_notes();
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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_mergetoaddress 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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unlock_notes(); // clean up
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}
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// Notes:
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// 1. #1359 Currently there is no limit set on the number of inputs+outputs, so size of tx could be invalid.
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// 2. #1277 Spendable notes are not locked, so an operation running in parallel could also try to use them.
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bool AsyncRPCOperation_mergetoaddress::main_impl()
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{
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assert(isToTaddr_ != isToZaddr_);
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bool isPureTaddrOnlyTx = (saplingNoteInputs_.empty() && isToTaddr_);
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CAmount minersFee = fee_;
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size_t numInputs = utxoInputs_.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 transparent inputs %d is greater than mempooltxinputlimit of %d",
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numInputs, limit));
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}
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CAmount t_inputs_total = 0;
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for (MergeToAddressInputUTXO& t : utxoInputs_) {
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t_inputs_total += std::get<1>(t);
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}
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CAmount z_inputs_total = 0;
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for (const MergeToAddressInputSaplingNote& t : saplingNoteInputs_) {
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z_inputs_total += std::get<2>(t);
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}
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CAmount targetAmount = z_inputs_total + t_inputs_total;
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if (targetAmount <= minersFee) {
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throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS,
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strprintf("Insufficient 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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// update the transaction with the UTXO inputs and output (if any)
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if (!isUsingBuilder_) {
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CMutableTransaction rawTx(tx_);
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for (const MergeToAddressInputUTXO& t : utxoInputs_) {
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CTxIn in(std::get<0>(t));
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rawTx.vin.push_back(in);
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}
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if (isToTaddr_) {
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CScript scriptPubKey = GetScriptForDestination(toTaddr_);
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CTxOut out(sendAmount, scriptPubKey);
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rawTx.vout.push_back(out);
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}
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tx_ = CTransaction(rawTx);
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}
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LogPrint(isPureTaddrOnlyTx ? "zrpc" : "zrpcunsafe", "%s: spending %s to send %s with fee %s\n",
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getId(), FormatMoney(targetAmount), FormatMoney(sendAmount), FormatMoney(minersFee));
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LogPrint("zrpc", "%s: transparent input: %s\n", getId(), FormatMoney(t_inputs_total));
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LogPrint("zrpcunsafe", "%s: private input: %s\n", getId(), FormatMoney(z_inputs_total));
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if (isToTaddr_) {
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LogPrint("zrpc", "%s: transparent output: %s\n", getId(), FormatMoney(sendAmount));
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} else {
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LogPrint("zrpcunsafe", "%s: private output: %s\n", getId(), FormatMoney(sendAmount));
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}
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LogPrint("zrpc", "%s: fee: %s\n", getId(), FormatMoney(minersFee));
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// Grab the current consensus branch ID
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{
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LOCK(cs_main);
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consensusBranchId_ = CurrentEpochBranchId(chainActive.Height() + 1, Params().GetConsensus());
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}
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/**
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* SCENARIO #0
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*
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* Only sapling involved, so we just use the TransactionBuilder and we're done.
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*
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* This is based on code from AsyncRPCOperation_sendmany::main_impl() and should be refactored.
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*/
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if (isUsingBuilder_) {
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builder_.SetFee(minersFee);
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for (const MergeToAddressInputUTXO& t : utxoInputs_) {
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COutPoint outPoint = std::get<0>(t);
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CAmount amount = std::get<1>(t);
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CScript scriptPubKey = std::get<2>(t);
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builder_.AddTransparentInput(outPoint, scriptPubKey, amount);
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}
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boost::optional<uint256> ovk;
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// Select Sapling notes
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std::vector<SaplingOutPoint> saplingOPs;
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std::vector<SaplingNote> saplingNotes;
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std::vector<SaplingExpandedSpendingKey> expsks;
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for (const MergeToAddressInputSaplingNote& saplingNoteInput: saplingNoteInputs_) {
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saplingOPs.push_back(std::get<0>(saplingNoteInput));
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saplingNotes.push_back(std::get<1>(saplingNoteInput));
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auto expsk = std::get<3>(saplingNoteInput);
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expsks.push_back(expsk);
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if (!ovk) {
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ovk = expsk.full_viewing_key().ovk;
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}
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}
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// Fetch Sapling anchor and witnesses
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uint256 anchor;
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std::vector<boost::optional<SaplingWitness>> witnesses;
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{
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LOCK2(cs_main, pwalletMain->cs_wallet);
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pwalletMain->GetSaplingNoteWitnesses(saplingOPs, witnesses, anchor);
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}
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// Add Sapling spends
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for (size_t i = 0; i < saplingNotes.size(); i++) {
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if (!witnesses[i]) {
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throw JSONRPCError(RPC_WALLET_ERROR, "Missing witness for Sapling note");
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}
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assert(builder_.AddSaplingSpend(expsks[i], saplingNotes[i], anchor, witnesses[i].get()));
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}
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if (isToTaddr_) {
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if (!builder_.AddTransparentOutput(toTaddr_, sendAmount)) {
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throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid output address, not a valid taddr.");
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}
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} else {
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std::string zaddr = std::get<0>(recipient_);
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std::string memo = std::get<1>(recipient_);
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std::array<unsigned char, HUSH_MEMO_SIZE> hexMemo = get_memo_from_hex_string(memo);
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auto saplingPaymentAddress = boost::get<libzcash::SaplingPaymentAddress>(&toPaymentAddress_);
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if (saplingPaymentAddress == nullptr) {
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// This should never happen as we have already determined that the payment is to sapling
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throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Could not get Sapling payment address.");
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}
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if (saplingNoteInputs_.size() == 0 && utxoInputs_.size() > 0) {
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// Sending from t-addresses, which we don't have ovks 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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"AsyncRPCOperation_sendmany: HD seed not found");
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}
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ovk = ovkForShieldingFromTaddr(seed);
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}
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if (!ovk) {
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throw JSONRPCError(RPC_WALLET_ERROR, "Sending to a Sapling address requires an ovk.");
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}
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builder_.AddSaplingOutput(ovk.get(), *saplingPaymentAddress, sendAmount, hexMemo);
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}
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// Build the transaction
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auto maybe_tx = 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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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(tx_);
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if (!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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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", 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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return true;
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}
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/**
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* END SCENARIO #0
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*/
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/**
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* SCENARIO #1
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*
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* taddrs -> taddr
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*
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* There are no zaddrs or joinsplits involved.
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*/
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if (isPureTaddrOnlyTx) {
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UniValue obj(UniValue::VOBJ);
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obj.push_back(Pair("rawtxn", EncodeHexTx(tx_)));
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sign_send_raw_transaction(obj);
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return true;
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}
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/**
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* END SCENARIO #1
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*/
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return false;
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}
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extern UniValue signrawtransaction(const UniValue& params, bool fHelp, const CPubKey& mypk);
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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_mergetoaddress::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);
|
|
CTransaction tx;
|
|
stream >> tx;
|
|
tx_ = tx;
|
|
}
|
|
|
|
std::array<unsigned char, HUSH_MEMO_SIZE> AsyncRPCOperation_mergetoaddress::get_memo_from_hex_string(std::string s)
|
|
{
|
|
std::array<unsigned char, HUSH_MEMO_SIZE> memo = {{0x00}};
|
|
|
|
std::vector<unsigned char> rawMemo = ParseHex(s.c_str());
|
|
|
|
// If ParseHex comes across a non-hex char, it will stop but still return results so far.
|
|
size_t slen = s.length();
|
|
if (slen % 2 != 0 || (slen > 0 && rawMemo.size() != slen / 2)) {
|
|
throw JSONRPCError(RPC_INVALID_PARAMETER, "Memo must be in hexadecimal format");
|
|
}
|
|
|
|
if (rawMemo.size() > HUSH_MEMO_SIZE) {
|
|
throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("Memo size of %d is too big, maximum allowed is %d", rawMemo.size(), HUSH_MEMO_SIZE));
|
|
}
|
|
|
|
// copy vector into boost array
|
|
int lenMemo = rawMemo.size();
|
|
for (int i = 0; i < HUSH_MEMO_SIZE && i < lenMemo; i++) {
|
|
memo[i] = rawMemo[i];
|
|
}
|
|
return memo;
|
|
}
|
|
|
|
/**
|
|
* Override getStatus() to append the operation's input parameters to the default status object.
|
|
*/
|
|
UniValue AsyncRPCOperation_mergetoaddress::getStatus() const
|
|
{
|
|
UniValue v = AsyncRPCOperation::getStatus();
|
|
if (contextinfo_.isNull()) {
|
|
return v;
|
|
}
|
|
|
|
UniValue obj = v.get_obj();
|
|
obj.push_back(Pair("method", "z_mergetoaddress"));
|
|
obj.push_back(Pair("params", contextinfo_));
|
|
return obj;
|
|
}
|
|
|
|
/**
|
|
* Lock input utxos
|
|
*/
|
|
void AsyncRPCOperation_mergetoaddress::lock_utxos() {
|
|
LOCK2(cs_main, pwalletMain->cs_wallet);
|
|
for (auto utxo : utxoInputs_) {
|
|
pwalletMain->LockCoin(std::get<0>(utxo));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Unlock input utxos
|
|
*/
|
|
void AsyncRPCOperation_mergetoaddress::unlock_utxos() {
|
|
LOCK2(cs_main, pwalletMain->cs_wallet);
|
|
for (auto utxo : utxoInputs_) {
|
|
pwalletMain->UnlockCoin(std::get<0>(utxo));
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Lock input notes
|
|
*/
|
|
void AsyncRPCOperation_mergetoaddress::lock_notes() {
|
|
LOCK2(cs_main, pwalletMain->cs_wallet);
|
|
for (auto note : saplingNoteInputs_) {
|
|
pwalletMain->LockNote(std::get<0>(note));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Unlock input notes
|
|
*/
|
|
void AsyncRPCOperation_mergetoaddress::unlock_notes() {
|
|
LOCK2(cs_main, pwalletMain->cs_wallet);
|
|
for (auto note : saplingNoteInputs_) {
|
|
pwalletMain->UnlockNote(std::get<0>(note));
|
|
}
|
|
}
|
|
|