rawtransaction.cpp

Go to the documentation of this file.

// Copyright (c) 2010 Satoshi Nakamoto
// Copyright (c) 2009-2014 The Bitcoin developers
// Copyright (c) 2014-2015 The Dash developers
// Copyright (c) 2015-2022 The PIVX Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#include "core_io.h"
#include "evo/providertx.h"
#include "key_io.h"
#include "keystore.h"
#include "llmq/quorums_chainlocks.h"
#include "net.h"
#include "policy/policy.h"
#include "primitives/transaction.h"
#include "rpc/server.h"
#include "script/script.h"
#include "script/script_error.h"
#include "script/sign.h"
#include "script/standard.h"
#include "uint256.h"
#include "utilmoneystr.h"
#include "validationinterface.h"
#ifdef ENABLE_WALLET
#include "sapling/address.h"
#include "sapling/key_io_sapling.h"
#include "wallet/rpcwallet.h"
#include "wallet/wallet.h"
#endif
 
#include <future>
#include <stdint.h>
 
#include <univalue.h>
 
template <typename Payload>
static void PayloadToJSON(const CTransaction& tx, Payload& pl, UniValue& entry)
{
    if (GetTxPayload(tx, pl)) {
        UniValue payloadObj;
        pl.ToJson(payloadObj);
        entry.pushKV("payload", payloadObj);
    }
}
 
static void PayloadToJSON(const CTransaction& tx, UniValue& entry)
{
    switch(tx.nType) {
        case CTransaction::TxType::PROREG: {
            ProRegPL pl;
            PayloadToJSON(tx, pl, entry);
            break;
        }
        case CTransaction::TxType::PROUPSERV: {
            ProUpServPL pl;
            PayloadToJSON(tx, pl, entry);
            break;
        }
        case CTransaction::TxType::PROUPREG: {
            ProUpRegPL pl;
            PayloadToJSON(tx, pl, entry);
            break;
        }
        case CTransaction::TxType::PROUPREV: {
            ProUpRevPL pl;
            PayloadToJSON(tx, pl, entry);
            break;
        }
    }
}
 
extern int ComputeNextBlockAndDepth(const CBlockIndex* tip, const CBlockIndex* blockindex, const CBlockIndex*& next);
 
static int ComputeConfirmations(const CBlockIndex* tip, const CBlockIndex* blockindex)
{
    const CBlockIndex* next{nullptr};
    return ComputeNextBlockAndDepth(tip, blockindex, next);
}
 
// pwallet can be nullptr. If not null, the json could include information available only to the wallet.
void TxToJSON(CWallet* const pwallet, const CTransaction& tx, const CBlockIndex* tip, const CBlockIndex* blockindex, UniValue& entry)
{
    // Call into TxToUniv() in bitcoin-common to decode the transaction hex.
    //
    // Blockchain contextual information (confirmations and blocktime) is not
    // available to code in bitcoin-common, so we query them here and push the
    // data into the returned UniValue.
    TxToUniv(tx, uint256(), entry);
 
    // Sapling
    if (pwallet && tx.IsShieldedTx()) {
        // Add information that only this wallet knows about the transaction if is possible
        if (pwallet->HasSaplingSPKM()) {
            std::vector<libzcash::SaplingPaymentAddress> addresses =
                    pwallet->GetSaplingScriptPubKeyMan()->FindMySaplingAddresses(tx);
            UniValue addrs(UniValue::VARR);
            for (const auto& addr : addresses) {
                addrs.push_back(KeyIO::EncodePaymentAddress(addr));
            }
            entry.pushKV("shielded_addresses", addrs);
        }
    }
 
    // Special txes
    if (tx.IsSpecialTx()) {
        PayloadToJSON(tx, entry);
    }
 
    bool chainLock = false;
    if (blockindex && tip) {
        entry.pushKV("blockhash", blockindex->GetBlockHash().ToString());
        int confirmations = ComputeConfirmations(tip, blockindex);
        if (confirmations != -1) {
            entry.pushKV("confirmations", confirmations);
            entry.pushKV("time", blockindex->GetBlockTime());
            entry.pushKV("blocktime", blockindex->GetBlockTime());
            chainLock = llmq::chainLocksHandler->HasChainLock(blockindex->nHeight, blockindex->GetBlockHash());
        } else {
            entry.pushKV("confirmations", 0);
        }
    }
    entry.pushKV("chainlock", chainLock);
}
 
std::string GetSaplingTxHelpInfo()
{
    return "  \"valueBalance\": n,          (numeric) The net value of spend transfers minus output transfers\n"
           "  \"valueBalanceSat\": n,       (numeric) `valueBalance` in sats\n"
           "  \"vShieldSpend\": [               (array of json objects)\n"
           "     {\n"
           "       \"cv\": \"hex\",         (string) A value commitment to the value of the input note\n"
           "       \"anchor\": hex,         (string) A Merkle root of the Sapling note commitment tree at some block height in the past\n"
           "       \"nullifier\": hex,       (string) The nullifier of the input note\n"
           "       \"rk\": hex,              (string) The randomized public key for spendAuthSig\n"
           "       \"proof\": hex,           (string) A zero-knowledge proof using the spend circuit\n"
           "       \"spendAuthSig\": hex,    (string) A signature authorizing this spend\n"
           "     }\n"
           "     ,...\n"
           "  ],\n"
           "  \"vShieldOutput\": [             (array of json objects)\n"
           "     {\n"
           "       \"cv\": hex,                  (string) A value commitment to the value of the output note\n"
           "       \"cmu\": hex,                 (string) The u-coordinate of the note commitment for the output note\n"
           "       \"ephemeralKey\": hex,         (string) A Jubjub public key\n"
           "       \"encCiphertext\": hex,       (string) A ciphertext component for the encrypted output note\n"
           "       \"outCiphertext\": hex,       (string) A ciphertext component for the encrypted output note\n"
           "       \"proof\": hex,               (string) A zero-knowledge proof using the output circuit\n"
           "     }\n"
           "     ,...\n"
           "  ],\n"
           "  \"bindingSig\": hex,       (string) Prove consistency of valueBalance with the value commitments in spend descriptions and output descriptions, and proves knowledge of the randomness used for the spend and output value commitments\n";
}
 
UniValue getrawtransaction(const JSONRPCRequest& request)
{
    if (request.fHelp || request.params.size() < 1 || request.params.size() > 3)
        throw std::runtime_error(
            "getrawtransaction \"txid\" ( verbose \"blockhash\" )\n"
 
            "\nNOTE: By default this function only works for mempool transactions. If the -txindex option is\n"
            "enabled, it also works for blockchain transactions. If the block which contains the transaction\n"
            "is known, its hash can be provided even for nodes without -txindex. Note that if a blockhash is\n"
            "provided, only that block will be searched and if the transaction is in the mempool or other\n"
            "blocks, or if this node does not have the given block available, the transaction will not be found.\n"
            "DEPRECATED: for now, it also works for transactions with unspent outputs.\n"
 
            "\nReturn the raw transaction data.\n"
            "\nIf verbose is 'true', returns an Object with information about 'txid'.\n"
            "If verbose is 'false' or omitted, returns a string that is serialized, hex-encoded data for 'txid'.\n"
 
            "\nArguments:\n"
            "1. \"txid\"      (string, required) The transaction id\n"
            "2. verbose     (bool, optional, default=false) If false, return a string, otherwise return a json object\n"
            "3. \"blockhash\" (string, optional) The block in which to look for the transaction\n"
 
            "\nResult (if verbose is not set or set to false):\n"
            "\"data\"      (string) The serialized, hex-encoded data for 'txid'\n"
 
            "\nResult (if verbose is set to true):\n"
            "{\n"
            "  \"in_active_chain\": b,   (bool) Whether specified block is in the active chain or not (only present with explicit \"blockhash\" argument)\n"
            "  \"hex\" : \"data\",       (string) The serialized, hex-encoded data for 'txid'\n"
            "  \"txid\" : \"id\",        (string) The transaction id (same as provided)\n"
            "  \"size\" : n,             (numeric) The serialized transaction size\n"
            "  \"version\" : n,          (numeric) The version\n"
            "  \"type\" : n,             (numeric) The type\n"
            "  \"locktime\" : ttt,       (numeric) The lock time\n"
            "  \"vin\" : [               (array of json objects)\n"
            "     {\n"
            "       \"txid\": \"id\",    (string) The transaction id\n"
            "       \"vout\": n,         (numeric) \n"
            "       \"scriptSig\": {     (json object) The script\n"
            "         \"asm\": \"asm\",  (string) asm\n"
            "         \"hex\": \"hex\"   (string) hex\n"
            "       },\n"
            "       \"sequence\": n      (numeric) The script sequence number\n"
            "     }\n"
            "     ,...\n"
            "  ],\n"
            "  \"vout\" : [              (array of json objects)\n"
            "     {\n"
            "       \"value\" : x.xxx,            (numeric) The value in PIV\n"
            "       \"n\" : n,                    (numeric) index\n"
            "       \"scriptPubKey\" : {          (json object)\n"
            "         \"asm\" : \"asm\",          (string) the asm\n"
            "         \"hex\" : \"hex\",          (string) the hex\n"
            "         \"reqSigs\" : n,            (numeric) The required sigs\n"
            "         \"type\" : \"pubkeyhash\",  (string) The type, eg 'pubkeyhash'\n"
            "         \"addresses\" : [           (json array of string)\n"
            "           \"pivxaddress\"        (string) pivx address\n"
            "           ,...\n"
            "         ]\n"
            "       }\n"
            "     }\n"
            "     ,...\n"
            "  ],\n"
            + GetSaplingTxHelpInfo() +
            "  \"shielded_addresses\"      (json array of string) the shielded addresses involved in this transaction if possible (only for shielded transactions and the tx owner/viewer)\n"
            "  \"extraPayloadSize\" : n    (numeric) Size of extra payload. Only present if it's a special TX\n"
            "  \"extraPayload\" : \"hex\"  (string) Hex encoded extra payload data. Only present if it's a special TX\n"
            "  \"blockhash\" : \"hash\",   (string) the block hash\n"
            "  \"confirmations\" : n,      (numeric) The confirmations\n"
            "  \"time\" : ttt,             (numeric) The transaction time in seconds since epoch (Jan 1 1970 GMT)\n"
            "  \"blocktime\" : ttt         (numeric) The block time in seconds since epoch (Jan 1 1970 GMT)\n"
            "}\n"
 
            "\nExamples:\n"
            + HelpExampleCli("getrawtransaction", "\"mytxid\"")
            + HelpExampleCli("getrawtransaction", "\"mytxid\" true")
            + HelpExampleRpc("getrawtransaction", "\"mytxid\", true")
            + HelpExampleCli("getrawtransaction", "\"mytxid\" false \"myblockhash\"")
            + HelpExampleCli("getrawtransaction", "\"mytxid\" true \"myblockhash\"")
        );
 
    LOCK(cs_main);
 
    bool in_active_chain = true;
    uint256 hash = ParseHashV(request.params[0], "parameter 1");
    CBlockIndex* blockindex = nullptr;
 
    bool fVerbose = false;
    if (!request.params[1].isNull()) {
        fVerbose = request.params[1].isNum() ? (request.params[1].get_int() != 0) : request.params[1].get_bool();
    }
 
    if (!request.params[2].isNull()) {
        uint256 blockhash = ParseHashV(request.params[2], "parameter 3");
        blockindex = LookupBlockIndex(blockhash);
        if (!blockindex) {
            throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block hash not found");
        }
        in_active_chain = chainActive.Contains(blockindex);
    }
 
    CTransactionRef tx;
    uint256 hash_block;
    if (!GetTransaction(hash, tx, hash_block, true, blockindex)) {
        std::string errmsg;
        if (blockindex) {
            if (!(blockindex->nStatus & BLOCK_HAVE_DATA)) {
                throw JSONRPCError(RPC_MISC_ERROR, "Block not available");
            }
            errmsg = "No such transaction found in the provided block";
        } else {
            errmsg = fTxIndex
              ? "No such mempool or blockchain transaction"
              : "No such mempool transaction. Use -txindex to enable blockchain transaction queries";
        }
        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, errmsg + ". Use gettransaction for wallet transactions.");
    }
 
    if (!fVerbose) {
        return EncodeHexTx(*tx);
    }
 
    UniValue result(UniValue::VOBJ);
    if (blockindex) result.pushKV("in_active_chain", in_active_chain);
    else blockindex = LookupBlockIndex(hash_block);
    CWallet * const pwallet = GetWalletForJSONRPCRequest(request);
    TxToJSON(pwallet, *tx, chainActive.Tip(), blockindex, result);
    return result;
}
 
UniValue createrawtransaction(const JSONRPCRequest& request)
{
    if (request.fHelp || request.params.size() < 2 || request.params.size() > 3)
        throw std::runtime_error(
            "createrawtransaction [{\"txid\":\"id\",\"vout\":n},...] {\"address\":amount,...} ( locktime )\n"
            "\nCreate a transaction spending the given inputs and sending to the given addresses.\n"
            "Returns hex-encoded raw transaction.\n"
            "Note that the transaction's inputs are not signed, and\n"
            "it is not stored in the wallet or transmitted to the network.\n"
 
            "\nArguments:\n"
            "1. \"inputs\"        (string, required) A json array of json objects\n"
            "     [\n"
            "       {\n"
            "         \"txid\":\"id\",  (string, required) The transaction id\n"
            "         \"vout\":n,       (numeric, required) The output number\n"
            "         \"sequence\":n    (numeric, optional) The sequence number\n"
            "       }\n"
            "       ,...\n"
            "     ]\n"
            "2. \"outputs\"           (string, required) a json object with addresses as keys and amounts as values\n"
            "    {\n"
            "      \"address\": x.xxx   (numeric, required) The key is the pivx address, the value is the pivx amount\n"
            "      ,...\n"
            "    }\n"
            "3. locktime                (numeric, optional, default=0) Raw locktime. Non-0 value also locktime-activates inputs\n"
 
            "\nResult:\n"
            "\"transaction\"            (string) hex string of the transaction\n"
 
            "\nExamples\n" +
            HelpExampleCli("createrawtransaction", "\"[{\\\"txid\\\":\\\"myid\\\",\\\"vout\\\":0}]\" \"{\\\"address\\\":0.01}\"") + HelpExampleRpc("createrawtransaction", "\"[{\\\"txid\\\":\\\"myid\\\",\\\"vout\\\":0}]\", \"{\\\"address\\\":0.01}\""));
 
    LOCK(cs_main);
    RPCTypeCheck(request.params, {UniValue::VARR, UniValue::VOBJ, UniValue::VNUM});
    if (request.params[0].isNull() || request.params[1].isNull())
        throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, arguments 1 and 2 must be non-null");
 
    UniValue inputs = request.params[0].get_array();
    UniValue sendTo = request.params[1].get_obj();
 
    CMutableTransaction rawTx;
 
    if (request.params.size() > 2 && !request.params[2].isNull()) {
        int64_t nLockTime = request.params[2].get_int64();
        if (nLockTime < 0 || nLockTime > std::numeric_limits<uint32_t>::max())
            throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, locktime out of range");
        rawTx.nLockTime = nLockTime;
    }
 
    for (unsigned int idx = 0; idx < inputs.size(); idx++) {
        const UniValue& input = inputs[idx];
        const UniValue& o = input.get_obj();
 
        uint256 txid = ParseHashO(o, "txid");
 
        const UniValue& vout_v = find_value(o, "vout");
        if (!vout_v.isNum())
            throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, missing vout key");
        int nOutput = vout_v.get_int();
        if (nOutput < 0)
            throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, vout must be positive");
 
        uint32_t nSequence = (rawTx.nLockTime ? CTxIn::SEQUENCE_FINAL - 1 : CTxIn::SEQUENCE_FINAL);
 
        // set the sequence number if passed in the parameters object
        const UniValue& sequenceObj = find_value(o, "sequence");
        if (sequenceObj.isNum()) {
            int64_t seqNr64 = sequenceObj.get_int64();
            if (seqNr64 < 0 || seqNr64 > CTxIn::SEQUENCE_FINAL)
                throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, sequence number is out of range");
            else
                nSequence = (uint32_t)seqNr64;
        }
 
        CTxIn in(COutPoint(txid, nOutput), CScript(), nSequence);
 
        rawTx.vin.push_back(in);
    }
 
    std::set<CTxDestination> setAddress;
    std::vector<std::string> addrList = sendTo.getKeys();
    for (const std::string& name_ : addrList) {
        CTxDestination address = DecodeDestination(name_);
        if (!IsValidDestination(address))
            throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, std::string("Invalid PIVX address: ")+name_);
 
        if (setAddress.count(address))
            throw JSONRPCError(RPC_INVALID_PARAMETER, std::string("Invalid parameter, duplicated address: ")+name_);
        setAddress.insert(address);
 
        CScript scriptPubKey = GetScriptForDestination(address);
        CAmount nAmount = AmountFromValue(sendTo[name_]);
 
        CTxOut out(nAmount, scriptPubKey);
        rawTx.vout.push_back(out);
    }
 
    return EncodeHexTx(rawTx);
}
 
UniValue decoderawtransaction(const JSONRPCRequest& request)
{
    if (request.fHelp || request.params.size() != 1)
        throw std::runtime_error(
            "decoderawtransaction \"hexstring\"\n"
            "\nReturn a JSON object representing the serialized, hex-encoded transaction.\n"
 
            "\nArguments:\n"
            "1. \"hexstring\"      (string, required) The transaction hex string\n"
 
            "\nResult:\n"
            "{\n"
            "  \"txid\" : \"id\",        (string) The transaction id\n"
            "  \"size\" : n,             (numeric) The transaction size\n"
            "  \"version\" : n,          (numeric) The version\n"
            "  \"type\" : n,             (numeric) The type\n"
            "  \"locktime\" : ttt,       (numeric) The lock time\n"
            "  \"vin\" : [               (array of json objects)\n"
            "     {\n"
            "       \"txid\": \"id\",    (string) The transaction id\n"
            "       \"vout\": n,         (numeric) The output number\n"
            "       \"scriptSig\": {     (json object) The script\n"
            "         \"asm\": \"asm\",  (string) asm\n"
            "         \"hex\": \"hex\"   (string) hex\n"
            "       },\n"
            "       \"sequence\": n     (numeric) The script sequence number\n"
            "     }\n"
            "     ,...\n"
            "  ],\n"
            "  \"vout\" : [             (array of json objects)\n"
            "     {\n"
            "       \"value\" : x.xxx,            (numeric) The value in PIV\n"
            "       \"n\" : n,                    (numeric) index\n"
            "       \"scriptPubKey\" : {          (json object)\n"
            "         \"asm\" : \"asm\",          (string) the asm\n"
            "         \"hex\" : \"hex\",          (string) the hex\n"
            "         \"reqSigs\" : n,            (numeric) The required sigs\n"
            "         \"type\" : \"pubkeyhash\",  (string) The type, eg 'pubkeyhash'\n"
            "         \"addresses\" : [           (json array of string)\n"
            "           \"12tvKAXCxZjSmdNbao16dKXC8tRWfcF5oc\"   (string) pivx address\n"
            "           ,...\n"
            "         ]\n"
            "       }\n"
            "     }\n"
            "     ,...\n"
            "  ],\n"
            + GetSaplingTxHelpInfo() +
            "  \"extraPayloadSize\" : n    (numeric) Size of extra payload. Only present if it's a special TX\n"
            "  \"extraPayload\" : \"hex\"  (string) Hex encoded extra payload data. Only present if it's a special TX\n"
            "}\n"
 
            "\nExamples:\n" +
            HelpExampleCli("decoderawtransaction", "\"hexstring\"") + HelpExampleRpc("decoderawtransaction", "\"hexstring\""));
 
    LOCK(cs_main);
    RPCTypeCheck(request.params, {UniValue::VSTR});
 
    CMutableTransaction mtx;
 
    if (!DecodeHexTx(mtx, request.params[0].get_str()))
        throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed");
 
    UniValue result(UniValue::VOBJ);
    CWallet * const pwallet = GetWalletForJSONRPCRequest(request);
    TxToJSON(pwallet, CTransaction(std::move(mtx)), nullptr, nullptr, result);
 
    return result;
}
 
UniValue decodescript(const JSONRPCRequest& request)
{
    if (request.fHelp || request.params.size() != 1)
        throw std::runtime_error(
            "decodescript \"hexstring\"\n"
            "\nDecode a hex-encoded script.\n"
 
            "\nArguments:\n"
            "1. \"hexstring\"     (string) the hex encoded script\n"
 
            "\nResult:\n"
            "{\n"
            "  \"asm\":\"asm\",   (string) Script public key\n"
            "  \"hex\":\"hex\",   (string) hex encoded public key\n"
            "  \"type\":\"type\", (string) The output type\n"
            "  \"reqSigs\": n,    (numeric) The required signatures\n"
            "  \"addresses\": [   (json array of string)\n"
            "     \"address\"     (string) pivx address\n"
            "     ,...\n"
            "  ],\n"
            "  \"p2sh\",\"address\" (string) script address\n"
            "}\n"
 
            "\nExamples:\n" +
            HelpExampleCli("decodescript", "\"hexstring\"") + HelpExampleRpc("decodescript", "\"hexstring\""));
 
    LOCK(cs_main);
    RPCTypeCheck(request.params, {UniValue::VSTR});
 
    UniValue r(UniValue::VOBJ);
    CScript script;
    if (request.params[0].get_str().size() > 0) {
        std::vector<unsigned char> scriptData(ParseHexV(request.params[0], "argument"));
        script = CScript(scriptData.begin(), scriptData.end());
    } else {
        // Empty scripts are valid
    }
    ScriptPubKeyToUniv(script, r, false);
 
    r.pushKV("p2sh", EncodeDestination(CScriptID(script)));
    return r;
}
 
static void TxInErrorToJSON(const CTxIn& txin, UniValue& vErrorsRet, const std::string& strMessage)
{
    UniValue entry(UniValue::VOBJ);
    entry.pushKV("txid", txin.prevout.hash.ToString());
    entry.pushKV("vout", (uint64_t)txin.prevout.n);
    entry.pushKV("scriptSig", HexStr(txin.scriptSig));
    entry.pushKV("sequence", (uint64_t)txin.nSequence);
    entry.pushKV("error", strMessage);
    vErrorsRet.push_back(entry);
}
 
UniValue signrawtransaction(const JSONRPCRequest& request)
{
    CWallet * const pwallet = GetWalletForJSONRPCRequest(request);
 
    if (request.fHelp || request.params.size() < 1 || request.params.size() > 4)
        throw std::runtime_error(
            "signrawtransaction \"hexstring\" ( [{\"txid\":\"id\",\"vout\":n,\"scriptPubKey\":\"hex\",\"redeemScript\":\"hex\"},...] [\"privatekey1\",...] sighashtype )\n"
            "\nSign inputs for raw transaction (serialized, hex-encoded).\n"
            "The second optional argument (may be null) is an array of previous transaction outputs that\n"
            "this transaction depends on but may not yet be in the block chain.\n"
            "The third optional argument (may be null) is an array of base58-encoded private\n"
            "keys that, if given, will be the only keys used to sign the transaction.\n"
#ifdef ENABLE_WALLET
            + HelpRequiringPassphrase(pwallet) + "\n"
#endif
 
            "\nArguments:\n"
            "1. \"hexstring\"     (string, required) The transaction hex string\n"
            "2. \"prevtxs\"       (string, optional) An json array of previous dependent transaction outputs\n"
            "     [               (json array of json objects, or 'null' if none provided)\n"
            "       {\n"
            "         \"txid\":\"id\",             (string, required) The transaction id\n"
            "         \"vout\":n,                  (numeric, required) The output number\n"
            "         \"scriptPubKey\": \"hex\",   (string, required) script key\n"
            "         \"redeemScript\": \"hex\"    (string, required for P2SH) redeem script\n"
            "         \"amount\": value            (numeric, required) The amount spent\n"
            "       }\n"
            "       ,...\n"
            "    ]\n"
            "3. \"privkeys\"     (string, optional) A json array of base58-encoded private keys for signing\n"
            "    [                  (json array of strings, or 'null' if none provided)\n"
            "      \"privatekey\"   (string) private key in base58-encoding\n"
            "      ,...\n"
            "    ]\n"
            "4. \"sighashtype\"     (string, optional, default=ALL) The signature hash type. Must be one of\n"
            "       \"ALL\"\n"
            "       \"NONE\"\n"
            "       \"SINGLE\"\n"
            "       \"ALL|ANYONECANPAY\"\n"
            "       \"NONE|ANYONECANPAY\"\n"
            "       \"SINGLE|ANYONECANPAY\"\n"
 
            "\nResult:\n"
            "{\n"
            "  \"hex\" : \"value\",           (string) The hex-encoded raw transaction with signature(s)\n"
            "  \"complete\" : true|false,   (boolean) If the transaction has a complete set of signatures\n"
            "  \"errors\" : [                 (json array of objects) Script verification errors (if there are any)\n"
            "    {\n"
            "      \"txid\" : \"hash\",           (string) The hash of the referenced, previous transaction\n"
            "      \"vout\" : n,                (numeric) The index of the output to spent and used as input\n"
            "      \"scriptSig\" : \"hex\",       (string) The hex-encoded signature script\n"
            "      \"sequence\" : n,            (numeric) Script sequence number\n"
            "      \"error\" : \"text\"           (string) Verification or signing error related to the input\n"
            "    }\n"
            "    ,...\n"
            "  ]\n"
            "}\n"
 
            "\nExamples:\n" +
            HelpExampleCli("signrawtransaction", "\"myhex\"") + HelpExampleRpc("signrawtransaction", "\"myhex\""));
 
#ifdef ENABLE_WALLET
    LOCK2(cs_main, pwallet ? &pwallet->cs_wallet : nullptr);
#else
    LOCK(cs_main);
#endif
    RPCTypeCheck(request.params, {UniValue::VSTR, UniValue::VARR, UniValue::VARR, UniValue::VSTR}, true);
 
    std::vector<unsigned char> txData(ParseHexV(request.params[0], "argument 1"));
    CDataStream ssData(txData, SER_NETWORK, PROTOCOL_VERSION);
    std::vector<CMutableTransaction> txVariants;
    while (!ssData.empty()) {
        try {
            CMutableTransaction tx;
            ssData >> tx;
            txVariants.push_back(tx);
        } catch (const std::exception&) {
            throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed");
        }
    }
 
    if (txVariants.empty())
        throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Missing transaction");
 
    // mergedTx will end up with all the signatures; it
    // starts as a clone of the rawtx:
    CMutableTransaction mergedTx(txVariants[0]);
 
    // Fetch previous transactions (inputs):
    std::map<COutPoint, std::pair<CScript, CAmount>> mapPrevOut; // todo: check why do we have this for regtest..
    if (Params().IsRegTestNet()) {
        for (const CTxIn &txbase : mergedTx.vin)
        {
            CTransactionRef tempTx;
            uint256 hashBlock;
            if (GetTransaction(txbase.prevout.hash, tempTx, hashBlock, true)) {
                // Copy results into mapPrevOut:
                mapPrevOut[txbase.prevout] = std::make_pair(tempTx->vout[txbase.prevout.n].scriptPubKey, tempTx->vout[txbase.prevout.n].nValue);
            }
        }
    }
    CCoinsView viewDummy;
    CCoinsViewCache view(&viewDummy);
    {
        LOCK(mempool.cs);
        CCoinsViewCache& viewChain = *pcoinsTip;
        CCoinsViewMemPool viewMempool(&viewChain, mempool);
        view.SetBackend(viewMempool); // temporarily switch cache backend to db+mempool view
 
        for (const CTxIn& txin : mergedTx.vin) {
            view.AccessCoin(txin.prevout); // Load entries from viewChain into view; can fail.
        }
 
        view.SetBackend(viewDummy); // switch back to avoid locking mempool for too long
    }
 
    bool fGivenKeys = false;
    CBasicKeyStore tempKeystore;
    if (request.params.size() > 2 && !request.params[2].isNull()) {
        fGivenKeys = true;
        UniValue keys = request.params[2].get_array();
        for (unsigned int idx = 0; idx < keys.size(); idx++) {
            UniValue k = keys[idx];
            CKey key = KeyIO::DecodeSecret(k.get_str());
            if (!key.IsValid())
                throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid private key");
            tempKeystore.AddKey(key);
        }
    }
#ifdef ENABLE_WALLET
    else if (pwallet)
        EnsureWalletIsUnlocked(pwallet);
#endif
 
    // Add previous txouts given in the RPC call:
    if (request.params.size() > 1 && !request.params[1].isNull()) {
        UniValue prevTxs = request.params[1].get_array();
        for (unsigned int idx = 0; idx < prevTxs.size(); idx++) {
            const UniValue& p = prevTxs[idx];
            if (!p.isObject())
                throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "expected object with {\"txid'\",\"vout\",\"scriptPubKey\"}");
 
            UniValue prevOut = p.get_obj();
 
            RPCTypeCheckObj(prevOut,
                {
                    {"txid", UniValueType(UniValue::VSTR)},
                    {"vout", UniValueType(UniValue::VNUM)},
                    {"scriptPubKey", UniValueType(UniValue::VSTR)},
                });
 
            uint256 txid = ParseHashO(prevOut, "txid");
 
            int nOut = find_value(prevOut, "vout").get_int();
            if (nOut < 0)
                throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "vout must be positive");
 
            COutPoint out(txid, nOut);
            std::vector<unsigned char> pkData(ParseHexO(prevOut, "scriptPubKey"));
            CScript scriptPubKey(pkData.begin(), pkData.end());
 
            {
                const Coin& coin = view.AccessCoin(out);
                if (!coin.IsSpent() && coin.out.scriptPubKey != scriptPubKey) {
                    std::string err("Previous output scriptPubKey mismatch:\n");
                    err = err + ScriptToAsmStr(coin.out.scriptPubKey) + "\nvs:\n"+
                        ScriptToAsmStr(scriptPubKey);
                    throw JSONRPCError(RPC_DESERIALIZATION_ERROR, err);
                }
 
                Coin newcoin;
                newcoin.out.scriptPubKey = scriptPubKey;
                newcoin.out.nValue = 0;
                newcoin.nHeight = 1;
                if (prevOut.exists("amount")) {
                    newcoin.out.nValue = AmountFromValue(find_value(prevOut, "amount"));
                }
                view.AddCoin(out, std::move(newcoin), true);
            }
 
            // if redeemScript given and not using the local wallet (private keys
            // given), add redeemScript to the tempKeystore so it can be signed:
            if (fGivenKeys && scriptPubKey.IsPayToScriptHash()) {
                RPCTypeCheckObj(prevOut,
                    {
                        {"txid", UniValueType(UniValue::VSTR)},
                        {"vout", UniValueType(UniValue::VNUM)},
                        {"scriptPubKey", UniValueType(UniValue::VSTR)},
                        {"redeemScript", UniValueType(UniValue::VSTR)},
                    });
                UniValue v = find_value(prevOut, "redeemScript");
                if (!v.isNull()) {
                    std::vector<unsigned char> rsData(ParseHexV(v, "redeemScript"));
                    CScript redeemScript(rsData.begin(), rsData.end());
                    tempKeystore.AddCScript(redeemScript);
                }
            }
        }
    }
 
#ifdef ENABLE_WALLET
    const CKeyStore& keystore = ((fGivenKeys || !pwallet) ? tempKeystore : *pwallet);
#else
    const CKeyStore& keystore = tempKeystore;
#endif
 
    int nHashType = SIGHASH_ALL;
    if (request.params.size() > 3 && !request.params[3].isNull()) {
        static std::map<std::string, int> mapSigHashValues = {
            {std::string("ALL"), int(SIGHASH_ALL)},
            {std::string("ALL|ANYONECANPAY"), int(SIGHASH_ALL|SIGHASH_ANYONECANPAY)},
            {std::string("NONE"), int(SIGHASH_NONE)},
            {std::string("NONE|ANYONECANPAY"), int(SIGHASH_NONE|SIGHASH_ANYONECANPAY)},
            {std::string("SINGLE"), int(SIGHASH_SINGLE)},
            {std::string("SINGLE|ANYONECANPAY"), int(SIGHASH_SINGLE|SIGHASH_ANYONECANPAY)},
        };
        std::string strHashType = request.params[3].get_str();
        if (mapSigHashValues.count(strHashType))
            nHashType = mapSigHashValues[strHashType];
        else
            throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid sighash param");
    }
 
    bool fHashSingle = ((nHashType & ~SIGHASH_ANYONECANPAY) == SIGHASH_SINGLE);
 
    // Script verification errors
    UniValue vErrors(UniValue::VARR);
 
    // Use CTransaction for the constant parts of the
    // transaction to avoid rehashing.
    const CTransaction txConst(mergedTx);
    // Sign what we can:
    for (unsigned int i = 0; i < mergedTx.vin.size(); i++) {
        CTxIn& txin = mergedTx.vin[i];
        const Coin& coin = view.AccessCoin(txin.prevout);
        if (Params().IsRegTestNet()) {
            if (mapPrevOut.count(txin.prevout) == 0 && coin.IsSpent())
            {
                TxInErrorToJSON(txin, vErrors, "Input not found");
                continue;
            }
        } else {
            if (coin.IsSpent()) {
                TxInErrorToJSON(txin, vErrors, "Input not found or already spent");
                continue;
            }
        }
 
        const CScript& prevPubKey = (Params().IsRegTestNet() && mapPrevOut.count(txin.prevout) != 0 ? mapPrevOut[txin.prevout].first : coin.out.scriptPubKey);
        const CAmount& amount = (Params().IsRegTestNet() && mapPrevOut.count(txin.prevout) != 0 ? mapPrevOut[txin.prevout].second : coin.out.nValue);
 
        txin.scriptSig.clear();
 
        // if this is a P2CS script, select which key to use
        bool fColdStake = false;
        if (prevPubKey.IsPayToColdStaking()) {
            // if we have both keys, sign with the spender key
            fColdStake = !bool(IsMine(keystore, prevPubKey) & ISMINE_SPENDABLE_DELEGATED);
        }
 
        SignatureData sigdata;
        SigVersion sigversion = mergedTx.GetRequiredSigVersion();
        // Only sign SIGHASH_SINGLE if there's a corresponding output:
        if (!fHashSingle || (i < mergedTx.vout.size()))
            ProduceSignature(MutableTransactionSignatureCreator(&keystore, &mergedTx, i, amount, nHashType),
                    prevPubKey, sigdata, sigversion, fColdStake);
 
        // ... and merge in other signatures:
        for (const CMutableTransaction& txv : txVariants) {
            sigdata = CombineSignatures(prevPubKey, TransactionSignatureChecker(&txConst, i, amount), sigdata, DataFromTransaction(txv, i));
        }
 
        UpdateTransaction(mergedTx, i, sigdata);
 
        ScriptError serror = SCRIPT_ERR_OK;
        if (!VerifyScript(txin.scriptSig, prevPubKey, STANDARD_SCRIPT_VERIFY_FLAGS,
                TransactionSignatureChecker(&txConst, i, amount), sigversion, &serror)) {
            TxInErrorToJSON(txin, vErrors, ScriptErrorString(serror));
        }
    }
    bool fComplete = vErrors.empty();
 
    UniValue result(UniValue::VOBJ);
    result.pushKV("hex", EncodeHexTx(mergedTx));
    result.pushKV("complete", fComplete);
    if (!vErrors.empty()) {
        result.pushKV("errors", vErrors);
    }
 
    return result;
}
 
void TryATMP(const CMutableTransaction& mtx, bool fOverrideFees)
{
    const uint256& hashTx = mtx.GetHash();
    std::promise<void> promise;
    bool fLimitFree = true;
 
    { // cs_main scope
        LOCK(cs_main);
        CCoinsViewCache& view = *pcoinsTip;
        bool fHaveChain = false;
        for (size_t o = 0; !fHaveChain && o < mtx.vout.size(); o++) {
            const Coin& existingCoin = view.AccessCoin(COutPoint(hashTx, o));
            fHaveChain = !existingCoin.IsSpent();
        }
        bool fHaveMempool = mempool.exists(hashTx);
        if (!fHaveMempool && !fHaveChain) {
            CValidationState state;
            bool fMissingInputs;
            if (!AcceptToMemoryPool(mempool, state, MakeTransactionRef(std::move(mtx)), fLimitFree, &fMissingInputs, false, !fOverrideFees)) {
                if (state.IsInvalid()) {
                    throw JSONRPCError(RPC_TRANSACTION_REJECTED, strprintf("%s: %s", state.GetRejectReason(), state.GetDebugMessage()));
                } else {
                    if (fMissingInputs) {
                        throw JSONRPCError(RPC_TRANSACTION_ERROR, "Missing inputs");
                    }
                    throw JSONRPCError(RPC_TRANSACTION_ERROR, strprintf("%s: %s", state.GetRejectReason(), state.GetDebugMessage()));
                }
            } else {
                // If wallet is enabled, ensure that the wallet has been made aware
                // of the new transaction prior to returning. This prevents a race
                // where a user might call sendrawtransaction with a transaction
                // to/from their wallet, immediately call some wallet RPC, and get
                // a stale result because callbacks have not yet been processed.
                CallFunctionInValidationInterfaceQueue([&promise] {
                    promise.set_value();
                });
            }
        } else if (fHaveChain) {
            throw JSONRPCError(RPC_TRANSACTION_ALREADY_IN_CHAIN, "transaction already in block chain");
        }
 
    } // cs_main
 
    promise.get_future().wait();
}
 
void RelayTx(const uint256& hashTx)
{
    if(!g_connman)
        throw JSONRPCError(RPC_CLIENT_P2P_DISABLED, "Error: Peer-to-peer functionality missing or disabled");
 
    CInv inv(MSG_TX, hashTx);
    g_connman->ForEachNode([&inv](CNode* pnode)
    {
        pnode->PushInventory(inv);
    });
}
 
UniValue sendrawtransaction(const JSONRPCRequest& request)
{
    if (request.fHelp || request.params.size() < 1 || request.params.size() > 2)
        throw std::runtime_error(
            "sendrawtransaction \"hexstring\" ( allowhighfees )\n"
            "\nSubmits raw transaction (serialized, hex-encoded) to local node and network.\n"
            "\nAlso see createrawtransaction and signrawtransaction calls.\n"
 
            "\nArguments:\n"
            "1. \"hexstring\"    (string, required) The hex string of the raw transaction)\n"
            "2. allowhighfees    (boolean, optional, default=false) Allow high fees\n"
 
            "\nResult:\n"
            "\"hex\"             (string) The transaction hash in hex\n"
 
            "\nExamples:\n"
            "\nCreate a transaction\n" +
            HelpExampleCli("createrawtransaction", "\"[{\\\"txid\\\" : \\\"mytxid\\\",\\\"vout\\\":0}]\" \"{\\\"myaddress\\\":0.01}\"") +
            "Sign the transaction, and get back the hex\n" + HelpExampleCli("signrawtransaction", "\"myhex\"") +
            "\nSend the transaction (signed hex)\n" + HelpExampleCli("sendrawtransaction", "\"signedhex\"") +
            "\nAs a json rpc call\n" + HelpExampleRpc("sendrawtransaction", "\"signedhex\""));
 
    RPCTypeCheck(request.params, {UniValue::VSTR, UniValue::VBOOL});
 
    // parse hex string from parameter
    CMutableTransaction mtx;
    if (!DecodeHexTx(mtx, request.params[0].get_str()))
        throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed");
    const uint256& hashTx = mtx.GetHash();
 
    bool fOverrideFees = false;
    if (request.params.size() > 1)
        fOverrideFees = request.params[1].get_bool();
 
    TryATMP(mtx, fOverrideFees);
    RelayTx(hashTx);
 
    return hashTx.GetHex();
}
 
// clang-format off
static const CRPCCommand commands[] =
{ //  category              name                      actor (function)         okSafe argNames
  //  --------------------- ------------------------  -----------------------  ------ --------
    { "rawtransactions",    "createrawtransaction",   &createrawtransaction,   true,  {"inputs","outputs","locktime"} },
    { "rawtransactions",    "decoderawtransaction",   &decoderawtransaction,   true,  {"hexstring"}  },
    { "rawtransactions",    "decodescript",           &decodescript,           true,  {"hexstring"} },
    { "rawtransactions",    "getrawtransaction",      &getrawtransaction,      true,  {"txid","verbose","blockhash"} },
    { "rawtransactions",    "sendrawtransaction",     &sendrawtransaction,     false, {"hexstring","allowhighfees"} },
    { "rawtransactions",    "signrawtransaction",     &signrawtransaction,     false, {"hexstring","prevtxs","privkeys","sighashtype"} }, /* uses wallet if enabled */
};
// clang-format on
 
void RegisterRawTransactionRPCCommands(CRPCTable &tableRPC)
{
    for (unsigned int vcidx = 0; vcidx < ARRAYLEN(commands); vcidx++)
        tableRPC.appendCommand(commands[vcidx].name, &commands[vcidx]);
}