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rawtransaction.cpp
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// Copyright (c) 2010 Satoshi Nakamoto
// Copyright (c) 2009-2019 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file LICENSE or http://www.opensource.org/licenses/mit-license.php.
#include <chainparams.h>
#include <chain.h>
#include <coins.h>
#include <compat/byteswap.h>
#include <consensus/validation.h>
#include <core_io.h>
#include <init.h>
#include <index/txindex.h>
#include <merkleblock.h>
#include <node/coin.h>
#include <node/psbt.h>
#include <node/transaction.h>
#include <policy/rbf.h>
#include <primitives/transaction.h>
#include <psbt.h>
#include <rpc/rawtransaction_util.h>
#include <rpc/server.h>
#include <rpc/util.h>
#include <script/script.h>
#include <script/script_error.h>
#include <script/sign.h>
#include <script/signingprovider.h>
#include <script/standard.h>
#include <uint256.h>
#include <util/moneystr.h>
#include <util/strencodings.h>
#include <validation.h>
#include <validationinterface.h>
#include <numeric>
#include <stdint.h>
#include <univalue.h>
/** High fee for sendrawtransaction and testmempoolaccept.
* By default, transaction with a fee higher than this will be rejected by the
* RPCs. This can be overridden with the maxfeerate argument.
*/
constexpr static CAmount DEFAULT_MAX_RAW_TX_FEE{COIN / 10};
static void TxToJSON(const CTransaction& tx, const uint256 hashBlock, UniValue& entry)
{
// Call into TxToUniv() in defi-common to decode the transaction hex.
//
// Blockchain contextual information (confirmations and blocktime) is not
// available to code in defi-common, so we query them here and push the
// data into the returned UniValue.
TxToUniv(tx, uint256(), entry, true, RPCSerializationFlags());
if (!hashBlock.IsNull()) {
LOCK(cs_main);
entry.pushKV("blockhash", hashBlock.GetHex());
CBlockIndex* pindex = LookupBlockIndex(hashBlock);
if (pindex) {
if (::ChainActive().Contains(pindex)) {
entry.pushKV("confirmations", 1 + ::ChainActive().Height() - pindex->nHeight);
entry.pushKV("time", pindex->GetBlockTime());
entry.pushKV("blocktime", pindex->GetBlockTime());
}
else
entry.pushKV("confirmations", 0);
}
}
}
static UniValue getrawtransaction(const JSONRPCRequest& request)
{
RPCHelpMan{
"getrawtransaction",
"\nReturn the raw transaction data.\n"
"\nBy default this function only works for mempool transactions. When called with a blockhash\n"
"argument, getrawtransaction will return the transaction if the specified block is available and\n"
"the transaction is found in that block. When called without a blockhash argument, getrawtransaction\n"
"will return the transaction if it is in the mempool, or if -txindex is enabled and the transaction\n"
"is in a block in the blockchain.\n"
"\nHint: Use gettransaction for wallet transactions.\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",
{
{"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The transaction id"},
{"verbose", RPCArg::Type::BOOL, /* default */ "false", "If false, return a string, otherwise return a json object"},
{"blockhash", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED_NAMED_ARG, "The block in which to look for the transaction"},
},
{
RPCResult{"if verbose is not set or set to false",
"\"data\" (string) The serialized, hex-encoded data for 'txid'\n"
},
RPCResult{"if verbose is set to true",
"{\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"
" \"hash\" : \"id\", (string) The transaction hash (differs from txid for witness transactions)\n"
" \"size\" : n, (numeric) The serialized transaction size\n"
" \"vsize\" : n, (numeric) The virtual transaction size (differs from size for witness transactions)\n"
" \"weight\" : n, (numeric) The transaction's weight (between vsize*4-3 and vsize*4)\n"
" \"version\" : n, (numeric) The version\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"
" \"txinwitness\": [\"hex\", ...] (array of string) hex-encoded witness data (if any)\n"
" }\n"
" ,...\n"
" ],\n"
" \"vout\" : [ (array of json objects)\n"
" {\n"
" \"value\" : x.xxx, (numeric) The value in " + CURRENCY_UNIT + "\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"
" \"address\" (string) defi address\n"
" ,...\n"
" ]\n"
" }\n"
" }\n"
" ,...\n"
" ],\n"
" \"blockhash\" : \"hash\", (string) the block hash\n"
" \"confirmations\" : n, (numeric) The confirmations\n"
" \"blocktime\" : ttt (numeric) The block time in seconds since epoch (Jan 1 1970 GMT)\n"
" \"time\" : ttt, (numeric) Same as \"blocktime\"\n"
"}\n"
},
},
RPCExamples{
HelpExampleCli("getrawtransaction", "\"mytxid\"")
+ HelpExampleCli("getrawtransaction", "\"mytxid\" true")
+ HelpExampleRpc("getrawtransaction", "\"mytxid\", true")
+ HelpExampleCli("getrawtransaction", "\"mytxid\" false \"myblockhash\"")
+ HelpExampleCli("getrawtransaction", "\"mytxid\" true \"myblockhash\"")
},
}.Check(request);
bool in_active_chain = true;
uint256 hash = ParseHashV(request.params[0], "parameter 1");
CBlockIndex* blockindex = nullptr;
// Accept either a bool (true) or a num (>=1) to indicate verbose output.
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()) {
LOCK(cs_main);
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);
}
bool f_txindex_ready = false;
if (g_txindex && !blockindex) {
f_txindex_ready = g_txindex->BlockUntilSyncedToCurrentChain();
}
CTransactionRef tx;
uint256 hash_block;
if (!GetTransaction(hash, tx, Params().GetConsensus(), hash_block, 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 if (!g_txindex) {
errmsg = "No such mempool transaction. Use -txindex or provide a block hash to enable blockchain transaction queries";
} else if (!f_txindex_ready) {
errmsg = "No such mempool transaction. Blockchain transactions are still in the process of being indexed";
} else {
errmsg = "No such mempool or blockchain transaction";
}
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, errmsg + ". Use gettransaction for wallet transactions.");
}
if (!fVerbose) {
return EncodeHexTx(*tx, RPCSerializationFlags());
}
UniValue result(UniValue::VOBJ);
if (blockindex) result.pushKV("in_active_chain", in_active_chain);
TxToJSON(*tx, hash_block, result);
return result;
}
static UniValue gettxoutproof(const JSONRPCRequest& request)
{
RPCHelpMan{"gettxoutproof",
"\nReturns a hex-encoded proof that \"txid\" was included in a block.\n"
"\nNOTE: By default this function only works sometimes. This is when there is an\n"
"unspent output in the utxo for this transaction. To make it always work,\n"
"you need to maintain a transaction index, using the -txindex command line option or\n"
"specify the block in which the transaction is included manually (by blockhash).\n",
{
{"txids", RPCArg::Type::ARR, RPCArg::Optional::NO, "A json array of txids to filter",
{
{"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED, "A transaction hash"},
},
},
{"blockhash", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED_NAMED_ARG, "If specified, looks for txid in the block with this hash"},
},
RPCResult{
"\"data\" (string) A string that is a serialized, hex-encoded data for the proof.\n"
},
RPCExamples{""},
}.Check(request);
std::set<uint256> setTxids;
uint256 oneTxid;
UniValue txids = request.params[0].get_array();
for (unsigned int idx = 0; idx < txids.size(); idx++) {
const UniValue& txid = txids[idx];
uint256 hash(ParseHashV(txid, "txid"));
if (setTxids.count(hash))
throw JSONRPCError(RPC_INVALID_PARAMETER, std::string("Invalid parameter, duplicated txid: ")+txid.get_str());
setTxids.insert(hash);
oneTxid = hash;
}
CBlockIndex* pblockindex = nullptr;
uint256 hashBlock;
if (!request.params[1].isNull()) {
LOCK(cs_main);
hashBlock = ParseHashV(request.params[1], "blockhash");
pblockindex = LookupBlockIndex(hashBlock);
if (!pblockindex) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block not found");
}
} else {
LOCK(cs_main);
// Loop through txids and try to find which block they're in. Exit loop once a block is found.
for (const auto& tx : setTxids) {
const Coin& coin = AccessByTxid(::ChainstateActive().CoinsTip(), tx);
if (!coin.IsSpent()) {
pblockindex = ::ChainActive()[coin.nHeight];
break;
}
}
}
// Allow txindex to catch up if we need to query it and before we acquire cs_main.
if (g_txindex && !pblockindex) {
g_txindex->BlockUntilSyncedToCurrentChain();
}
LOCK(cs_main);
if (pblockindex == nullptr)
{
CTransactionRef tx;
if (!GetTransaction(oneTxid, tx, Params().GetConsensus(), hashBlock) || hashBlock.IsNull())
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Transaction not yet in block");
pblockindex = LookupBlockIndex(hashBlock);
if (!pblockindex) {
throw JSONRPCError(RPC_INTERNAL_ERROR, "Transaction index corrupt");
}
}
CBlock block;
if(!ReadBlockFromDisk(block, pblockindex, Params().GetConsensus()))
throw JSONRPCError(RPC_INTERNAL_ERROR, "Can't read block from disk");
unsigned int ntxFound = 0;
for (const auto& tx : block.vtx)
if (setTxids.count(tx->GetHash()))
ntxFound++;
if (ntxFound != setTxids.size())
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Not all transactions found in specified or retrieved block");
CDataStream ssMB(SER_NETWORK, PROTOCOL_VERSION | SERIALIZE_TRANSACTION_NO_WITNESS);
CMerkleBlock mb(block, setTxids);
ssMB << mb;
std::string strHex = HexStr(ssMB.begin(), ssMB.end());
return strHex;
}
static UniValue verifytxoutproof(const JSONRPCRequest& request)
{
RPCHelpMan{"verifytxoutproof",
"\nVerifies that a proof points to a transaction in a block, returning the transaction it commits to\n"
"and throwing an RPC error if the block is not in our best chain\n",
{
{"proof", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The hex-encoded proof generated by gettxoutproof"},
},
RPCResult{
"[\"txid\"] (array, strings) The txid(s) which the proof commits to, or empty array if the proof can not be validated.\n"
},
RPCExamples{""},
}.Check(request);
CDataStream ssMB(ParseHexV(request.params[0], "proof"), SER_NETWORK, PROTOCOL_VERSION | SERIALIZE_TRANSACTION_NO_WITNESS);
CMerkleBlock merkleBlock;
ssMB >> merkleBlock;
UniValue res(UniValue::VARR);
std::vector<uint256> vMatch;
std::vector<unsigned int> vIndex;
if (merkleBlock.txn.ExtractMatches(vMatch, vIndex) != merkleBlock.header.hashMerkleRoot)
return res;
LOCK(cs_main);
const CBlockIndex* pindex = LookupBlockIndex(merkleBlock.header.GetHash());
if (!pindex || !::ChainActive().Contains(pindex) || pindex->nTx == 0) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Block not found in chain");
}
// Check if proof is valid, only add results if so
if (pindex->nTx == merkleBlock.txn.GetNumTransactions()) {
for (const uint256& hash : vMatch) {
res.push_back(hash.GetHex());
}
}
return res;
}
static UniValue createrawtransaction(const JSONRPCRequest& request)
{
RPCHelpMan{"createrawtransaction",
"\nCreate a transaction spending the given inputs and creating new outputs.\n"
"Outputs can be addresses or data.\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",
{
{"inputs", RPCArg::Type::ARR, RPCArg::Optional::NO, "A json array of json objects",
{
{"", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED, "",
{
{"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The transaction id"},
{"vout", RPCArg::Type::NUM, RPCArg::Optional::NO, "The output number"},
{"sequence", RPCArg::Type::NUM, /* default */ "depends on the value of the 'replaceable' and 'locktime' arguments", "The sequence number"},
},
},
},
},
{"outputs", RPCArg::Type::ARR, RPCArg::Optional::NO, "a json array with outputs (key-value pairs), where none of the keys are duplicated.\n"
"That is, each address can only appear once and there can only be one 'data' object.\n"
"For compatibility reasons, a dictionary, which holds the key-value pairs directly, is also\n"
" accepted as second parameter.",
{
{"", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED, "",
{
{"address", RPCArg::Type::AMOUNT, RPCArg::Optional::NO, "A key-value pair. The key (string) is the DFI address, the value (float or string) is the amount in " + CURRENCY_UNIT},
},
},
{"", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED, "",
{
{"data", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "A key-value pair. The key must be \"data\", the value is hex-encoded data"},
},
},
},
},
{"locktime", RPCArg::Type::NUM, /* default */ "0", "Raw locktime. Non-0 value also locktime-activates inputs"},
{"replaceable", RPCArg::Type::BOOL, /* default */ "false", "Marks this transaction as BIP125-replaceable.\n"
" Allows this transaction to be replaced by a transaction with higher fees. If provided, it is an error if explicit sequence numbers are incompatible."},
},
RPCResult{
"\"transaction\" (string) hex string of the transaction\n"
},
RPCExamples{
HelpExampleCli("createrawtransaction", "\"[{\\\"txid\\\":\\\"myid\\\",\\\"vout\\\":0}]\" \"[{\\\"address\\\":0.01}]\"")
+ HelpExampleCli("createrawtransaction", "\"[{\\\"txid\\\":\\\"myid\\\",\\\"vout\\\":0}]\" \"[{\\\"data\\\":\\\"00010203\\\"}]\"")
+ HelpExampleRpc("createrawtransaction", "\"[{\\\"txid\\\":\\\"myid\\\",\\\"vout\\\":0}]\", \"[{\\\"address\\\":0.01}]\"")
+ HelpExampleRpc("createrawtransaction", "\"[{\\\"txid\\\":\\\"myid\\\",\\\"vout\\\":0}]\", \"[{\\\"data\\\":\\\"00010203\\\"}]\"")
},
}.Check(request);
RPCTypeCheck(request.params, {
UniValue::VARR,
UniValueType(), // ARR or OBJ, checked later
UniValue::VNUM,
UniValue::VBOOL
}, true
);
bool rbf = false;
if (!request.params[3].isNull()) {
rbf = request.params[3].isTrue();
}
CMutableTransaction rawTx = ConstructTransaction(request.params[0], request.params[1], request.params[2], rbf, *g_rpc_interfaces->chain);
return EncodeHexTx(CTransaction(rawTx));
}
static UniValue decoderawtransaction(const JSONRPCRequest& request)
{
RPCHelpMan{"decoderawtransaction",
"\nReturn a JSON object representing the serialized, hex-encoded transaction.\n",
{
{"hexstring", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The transaction hex string"},
{"iswitness", RPCArg::Type::BOOL, /* default */ "depends on heuristic tests", "Whether the transaction hex is a serialized witness transaction.\n"
"If iswitness is not present, heuristic tests will be used in decoding.\n"
"If true, only witness deserialization will be tried.\n"
"If false, only non-witness deserialization will be tried.\n"
"This boolean should reflect whether the transaction has inputs\n"
"(e.g. fully valid, or on-chain transactions), if known by the caller."
},
},
RPCResult{
"{\n"
" \"txid\" : \"id\", (string) The transaction id\n"
" \"hash\" : \"id\", (string) The transaction hash (differs from txid for witness transactions)\n"
" \"size\" : n, (numeric) The transaction size\n"
" \"vsize\" : n, (numeric) The virtual transaction size (differs from size for witness transactions)\n"
" \"weight\" : n, (numeric) The transaction's weight (between vsize*4 - 3 and vsize*4)\n"
" \"version\" : n, (numeric) The version\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"
" \"txinwitness\": [\"hex\", ...] (array of string) hex-encoded witness data (if any)\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 " + CURRENCY_UNIT + "\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) defi address\n"
" ,...\n"
" ]\n"
" }\n"
" }\n"
" ,...\n"
" ],\n"
"}\n"
},
RPCExamples{
HelpExampleCli("decoderawtransaction", "\"hexstring\"")
+ HelpExampleRpc("decoderawtransaction", "\"hexstring\"")
},
}.Check(request);
RPCTypeCheck(request.params, {UniValue::VSTR, UniValue::VBOOL});
CMutableTransaction mtx;
bool try_witness = request.params[1].isNull() ? true : request.params[1].get_bool();
bool try_no_witness = request.params[1].isNull() ? true : !request.params[1].get_bool();
if (!DecodeHexTx(mtx, request.params[0].get_str(), try_no_witness, try_witness)) {
throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed");
}
UniValue result(UniValue::VOBJ);
TxToUniv(CTransaction(std::move(mtx)), uint256(), result, false);
return result;
}
static std::string GetAllOutputTypes()
{
std::string ret;
for (int i = TX_NONSTANDARD; i <= TX_WITNESS_UNKNOWN; ++i) {
if (i != TX_NONSTANDARD) ret += ", ";
ret += GetTxnOutputType(static_cast<txnouttype>(i));
}
return ret;
}
static UniValue decodescript(const JSONRPCRequest& request)
{
RPCHelpMan{"decodescript",
"\nDecode a hex-encoded script.\n",
{
{"hexstring", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "the hex-encoded script"},
},
RPCResult{
"{\n"
" \"asm\":\"asm\", (string) Script public key\n"
" \"type\":\"type\", (string) The output type (e.g. "+GetAllOutputTypes()+")\n"
" \"reqSigs\": n, (numeric) The required signatures\n"
" \"addresses\": [ (json array of string)\n"
" \"address\" (string) defi address\n"
" ,...\n"
" ],\n"
" \"p2sh\":\"str\" (string) address of P2SH script wrapping this redeem script (not returned if the script is already a P2SH).\n"
" \"segwit\": { (json object) Result of a witness script public key wrapping this redeem script (not returned if the script is a P2SH or witness).\n"
" \"asm\":\"str\", (string) String representation of the script public key\n"
" \"hex\":\"hexstr\", (string) Hex string of the script public key\n"
" \"type\":\"str\", (string) The type of the script public key (e.g. witness_v0_keyhash or witness_v0_scripthash)\n"
" \"reqSigs\": n, (numeric) The required signatures (always 1)\n"
" \"addresses\": [ (json array of string) (always length 1)\n"
" \"address\" (string) segwit address\n"
" ,...\n"
" ],\n"
" \"p2sh-segwit\":\"str\" (string) address of the P2SH script wrapping this witness redeem script.\n"
"}\n"
},
RPCExamples{
HelpExampleCli("decodescript", "\"hexstring\"")
+ HelpExampleRpc("decodescript", "\"hexstring\"")
},
}.Check(request);
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, /* fIncludeHex */ false);
UniValue type;
type = find_value(r, "type");
if (type.isStr() && type.get_str() != "scripthash") {
// P2SH cannot be wrapped in a P2SH. If this script is already a P2SH,
// don't return the address for a P2SH of the P2SH.
r.pushKV("p2sh", EncodeDestination(ScriptHash(script)));
// P2SH and witness programs cannot be wrapped in P2WSH, if this script
// is a witness program, don't return addresses for a segwit programs.
if (type.get_str() == "pubkey" || type.get_str() == "pubkeyhash" || type.get_str() == "multisig" || type.get_str() == "nonstandard") {
std::vector<std::vector<unsigned char>> solutions_data;
txnouttype which_type = Solver(script, solutions_data);
// Uncompressed pubkeys cannot be used with segwit checksigs.
// If the script contains an uncompressed pubkey, skip encoding of a segwit program.
if ((which_type == TX_PUBKEY) || (which_type == TX_MULTISIG)) {
for (const auto& solution : solutions_data) {
if ((solution.size() != 1) && !CPubKey(solution).IsCompressed()) {
return r;
}
}
}
UniValue sr(UniValue::VOBJ);
CScript segwitScr;
if (which_type == TX_PUBKEY) {
segwitScr = GetScriptForDestination(WitnessV0KeyHash(Hash160(solutions_data[0].begin(), solutions_data[0].end())));
} else if (which_type == TX_PUBKEYHASH) {
segwitScr = GetScriptForDestination(WitnessV0KeyHash(solutions_data[0]));
} else {
// Scripts that are not fit for P2WPKH are encoded as P2WSH.
// Newer segwit program versions should be considered when then become available.
segwitScr = GetScriptForDestination(WitnessV0ScriptHash(script));
}
ScriptPubKeyToUniv(segwitScr, sr, /* fIncludeHex */ true);
sr.pushKV("p2sh-segwit", EncodeDestination(ScriptHash(segwitScr)));
r.pushKV("segwit", sr);
}
}
return r;
}
static UniValue combinerawtransaction(const JSONRPCRequest& request)
{
RPCHelpMan{"combinerawtransaction",
"\nCombine multiple partially signed transactions into one transaction.\n"
"The combined transaction may be another partially signed transaction or a \n"
"fully signed transaction.",
{
{"txs", RPCArg::Type::ARR, RPCArg::Optional::NO, "A json array of hex strings of partially signed transactions",
{
{"hexstring", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED, "A transaction hash"},
},
},
},
RPCResult{
"\"hex\" (string) The hex-encoded raw transaction with signature(s)\n"
},
RPCExamples{
HelpExampleCli("combinerawtransaction", "[\"myhex1\", \"myhex2\", \"myhex3\"]")
},
}.Check(request);
UniValue txs = request.params[0].get_array();
std::vector<CMutableTransaction> txVariants(txs.size());
for (unsigned int idx = 0; idx < txs.size(); idx++) {
if (!DecodeHexTx(txVariants[idx], txs[idx].get_str(), true)) {
throw JSONRPCError(RPC_DESERIALIZATION_ERROR, strprintf("TX decode failed for tx %d", idx));
}
}
if (txVariants.empty()) {
throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Missing transactions");
}
// mergedTx will end up with all the signatures; it
// starts as a clone of the rawtx:
CMutableTransaction mergedTx(txVariants[0]);
// Fetch previous transactions (inputs):
CCoinsView viewDummy;
CCoinsViewCache view(&viewDummy);
{
LOCK2(cs_main, mempool.cs);
CCoinsViewCache &viewChain = ::ChainstateActive().CoinsTip();
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
}
// 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 (coin.IsSpent()) {
throw JSONRPCError(RPC_VERIFY_ERROR, "Input not found or already spent");
}
SignatureData sigdata;
// ... and merge in other signatures:
for (const CMutableTransaction& txv : txVariants) {
if (txv.vin.size() > i) {
sigdata.MergeSignatureData(DataFromTransaction(txv, i, coin.out));
}
}
ProduceSignature(DUMMY_SIGNING_PROVIDER, MutableTransactionSignatureCreator(&mergedTx, i, coin.out.nValue, 1), coin.out.scriptPubKey, sigdata);
UpdateInput(txin, sigdata);
}
return EncodeHexTx(CTransaction(mergedTx));
}
static UniValue signrawtransactionwithkey(const JSONRPCRequest& request)
{
RPCHelpMan{"signrawtransactionwithkey",
"\n#puts for raw transaction (serialized, hex-encoded).\n"
"The second argument is an array of base58-encoded private\n"
"keys that will be the only keys used to sign the transaction.\n"
"The third 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",
{
{"hexstring", RPCArg::Type::STR, RPCArg::Optional::NO, "The transaction hex string"},
{"privkeys", RPCArg::Type::ARR, RPCArg::Optional::NO, "A json array of base58-encoded private keys for signing",
{
{"privatekey", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED, "private key in base58-encoding"},
},
},
{"prevtxs", RPCArg::Type::ARR, RPCArg::Optional::OMITTED_NAMED_ARG, "A json array of previous dependent transaction outputs",
{
{"", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED, "",
{
{"txid", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The transaction id"},
{"vout", RPCArg::Type::NUM, RPCArg::Optional::NO, "The output number"},
{"scriptPubKey", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "script key"},
{"redeemScript", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED, "(required for P2SH) redeem script"},
{"witnessScript", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED, "(required for P2WSH or P2SH-P2WSH) witness script"},
{"amount", RPCArg::Type::AMOUNT, RPCArg::Optional::OMITTED, "(required for Segwit inputs) the amount spent"},
},
},
},
},
{"sighashtype", RPCArg::Type::STR, /* default */ "ALL", "The signature hash type. Must be one of:\n"
" \"DEFAULT\"\n"
" \"ALL\"\n"
" \"NONE\"\n"
" \"SINGLE\"\n"
" \"ALL|ANYONECANPAY\"\n"
" \"NONE|ANYONECANPAY\"\n"
" \"SINGLE|ANYONECANPAY\"\n"
},
},
RPCResult{
"{\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"
},
RPCExamples{
HelpExampleCli("signrawtransactionwithkey", "\"myhex\" \"[\\\"key1\\\",\\\"key2\\\"]\"")
+ HelpExampleRpc("signrawtransactionwithkey", "\"myhex\", \"[\\\"key1\\\",\\\"key2\\\"]\"")
},
}.Check(request);
RPCTypeCheck(request.params, {UniValue::VSTR, UniValue::VARR, UniValue::VARR, UniValue::VSTR}, true);
CMutableTransaction mtx;
if (!DecodeHexTx(mtx, request.params[0].get_str(), true)) {
throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed");
}
FillableSigningProvider keystore;
const UniValue& keys = request.params[1].get_array();
for (unsigned int idx = 0; idx < keys.size(); ++idx) {
UniValue k = keys[idx];
CKey key = DecodeSecret(k.get_str());
if (!key.IsValid()) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid private key");
}
keystore.AddKey(key);
}
// Fetch previous transactions (inputs):
std::map<COutPoint, Coin> coins;
for (const CTxIn& txin : mtx.vin) {
coins[txin.prevout]; // Create empty map entry keyed by prevout.
}
FindCoins(coins);
return SignTransaction(mtx, request.params[2], &keystore, coins, true, request.params[3]);
}
static UniValue sendrawtransaction(const JSONRPCRequest& request)
{
RPCHelpMan{"sendrawtransaction",
"\nSubmit a raw transaction (serialized, hex-encoded) to local node and network.\n"
"\nNote that the transaction will be sent unconditionally to all peers, so using this\n"
"for manual rebroadcast may degrade privacy by leaking the transaction's origin, as\n"
"nodes will normally not rebroadcast non-wallet transactions already in their mempool.\n"
"\nAlso see createrawtransaction and signrawtransactionwithkey calls.\n",
{
{"hexstring", RPCArg::Type::STR_HEX, RPCArg::Optional::NO, "The hex string of the raw transaction"},
{"maxfeerate", RPCArg::Type::AMOUNT, /* default */ FormatMoney(DEFAULT_MAX_RAW_TX_FEE),
"Reject transactions whose fee rate is higher than the specified value, expressed in " + CURRENCY_UNIT +
"/kB.\nSet to 0 to accept any fee rate.\n"},
},
RPCResult{
"\"hex\" (string) The transaction hash in hex\n"
},
RPCExamples{
"\nCreate a transaction\n"
+ HelpExampleCli("createrawtransaction", "\"[{\\\"txid\\\" : \\\"mytxid\\\",\\\"vout\\\":0}]\" \"{\\\"myaddress\\\":0.01}\"") +
"Sign the transaction, and get back the hex\n"
+ HelpExampleCli("signrawtransactionwithwallet", "\"myhex\"") +
"\nSend the transaction (signed hex)\n"
+ HelpExampleCli("sendrawtransaction", "\"signedhex\"") +
"\nAs a JSON-RPC call\n"
+ HelpExampleRpc("sendrawtransaction", "\"signedhex\"")
},
}.Check(request);
RPCTypeCheck(request.params, {
UniValue::VSTR,
UniValueType(), // NUM or BOOL, checked later
});
// parse hex string from parameter
CMutableTransaction mtx;
if (!DecodeHexTx(mtx, request.params[0].get_str()))
throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed");
CTransactionRef tx(MakeTransactionRef(std::move(mtx)));
CAmount max_raw_tx_fee = DEFAULT_MAX_RAW_TX_FEE;
// TODO: temporary migration code for old clients. Remove in v0.20
if (request.params[1].isBool()) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Second argument must be numeric (maxfeerate) and no longer supports a boolean. To allow a transaction with high fees, set maxfeerate to 0.");
} else if (!request.params[1].isNull()) {
size_t weight = GetTransactionWeight(*tx);
CFeeRate fr(AmountFromValue(request.params[1]));
// the +3/4 part rounds the value up, and is the same formula used when
// calculating the fee for a transaction
// (see GetVirtualTransactionSize)
max_raw_tx_fee = fr.GetFee((weight+3)/4);
}
std::string err_string;
AssertLockNotHeld(cs_main);
const TransactionError err = BroadcastTransaction(tx, err_string, max_raw_tx_fee, /*relay*/ true, /*wait_callback*/ true);
if (TransactionError::OK != err) {
throw JSONRPCTransactionError(err, err_string);
}
return tx->GetHash().GetHex();
}
static UniValue testmempoolaccept(const JSONRPCRequest& request)
{
RPCHelpMan{"testmempoolaccept",
"\nReturns result of mempool acceptance tests indicating if raw transaction (serialized, hex-encoded) would be accepted by mempool.\n"
"\nThis checks if the transaction violates the consensus or policy rules.\n"
"\nSee sendrawtransaction call.\n",
{
{"rawtxs", RPCArg::Type::ARR, RPCArg::Optional::NO, "An array of hex strings of raw transactions.\n"
" Length must be one for now.",
{
{"rawtx", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED, ""},
},
},
{"maxfeerate", RPCArg::Type::AMOUNT, /* default */ FormatMoney(DEFAULT_MAX_RAW_TX_FEE), "Reject transactions whose fee rate is higher than the specified value, expressed in " + CURRENCY_UNIT + "/kB\n"},
},
RPCResult{
"[ (array) The result of the mempool acceptance test for each raw transaction in the input array.\n"
" Length is exactly one for now.\n"
" {\n"
" \"txid\" (string) The transaction hash in hex\n"
" \"allowed\" (boolean) If the mempool allows this tx to be inserted\n"
" \"reject-reason\" (string) Rejection string (only present when 'allowed' is false)\n"
" }\n"
"]\n"
},
RPCExamples{
"\nCreate a transaction\n"
+ HelpExampleCli("createrawtransaction", "\"[{\\\"txid\\\" : \\\"mytxid\\\",\\\"vout\\\":0}]\" \"{\\\"myaddress\\\":0.01}\"") +
"Sign the transaction, and get back the hex\n"
+ HelpExampleCli("signrawtransactionwithwallet", "\"myhex\"") +
"\nTest acceptance of the transaction (signed hex)\n"
+ HelpExampleCli("testmempoolaccept", "[\"signedhex\"]") +
"\nAs a JSON-RPC call\n"
+ HelpExampleRpc("testmempoolaccept", "[\"signedhex\"]")
},
}.Check(request);
RPCTypeCheck(request.params, {
UniValue::VARR,
UniValueType(), // NUM or BOOL, checked later
});
if (request.params[0].get_array().size() != 1) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Array must contain exactly one raw transaction for now");
}
CMutableTransaction mtx;
if (!DecodeHexTx(mtx, request.params[0].get_array()[0].get_str())) {
throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed");
}
CTransactionRef tx(MakeTransactionRef(std::move(mtx)));
const uint256& tx_hash = tx->GetHash();
CAmount max_raw_tx_fee = DEFAULT_MAX_RAW_TX_FEE;
// TODO: temporary migration code for old clients. Remove in v0.20
if (request.params[1].isBool()) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Second argument must be numeric (maxfeerate) and no longer supports a boolean. To allow a transaction with high fees, set maxfeerate to 0.");
} else if (!request.params[1].isNull()) {
size_t weight = GetTransactionWeight(*tx);
CFeeRate fr(AmountFromValue(request.params[1]));
// the +3/4 part rounds the value up, and is the same formula used when
// calculating the fee for a transaction
// (see GetVirtualTransactionSize)
max_raw_tx_fee = fr.GetFee((weight+3)/4);
}
UniValue result(UniValue::VARR);
UniValue result_0(UniValue::VOBJ);
result_0.pushKV("txid", tx_hash.GetHex());
CValidationState state;
bool missing_inputs;
bool test_accept_res;
{
LOCK(cs_main);
test_accept_res = AcceptToMemoryPool(mempool, state, std::move(tx), &missing_inputs,
nullptr /* plTxnReplaced */, false /* bypass_limits */, max_raw_tx_fee, /* test_accept */ true);
}
result_0.pushKV("allowed", test_accept_res);
if (!test_accept_res) {
if (state.IsInvalid()) {
result_0.pushKV("reject-reason", strprintf("%s", state.GetRejectReason()));
} else if (missing_inputs) {
result_0.pushKV("reject-reason", "missing-inputs");
} else {
result_0.pushKV("reject-reason", state.GetRejectReason());
}
}
result.push_back(std::move(result_0));
return result;
}
static std::string WriteHDKeypath(std::vector<uint32_t>& keypath)
{
std::string keypath_str = "m";
for (uint32_t num : keypath) {
keypath_str += "/";
bool hardened = false;
if (num & 0x80000000) {
hardened = true;
num &= ~0x80000000;
}
keypath_str += std::to_string(num);
if (hardened) {
keypath_str += "'";
}
}
return keypath_str;
}
UniValue decodepsbt(const JSONRPCRequest& request)
{
RPCHelpMan{"decodepsbt",
"\nReturn a JSON object representing the serialized, base64-encoded partially signed Defi transaction.\n",
{
{"psbt", RPCArg::Type::STR, RPCArg::Optional::NO, "The PSBT base64 string"},
},
RPCResult{
"{\n"
" \"tx\" : { (json object) The decoded network-serialized unsigned transaction.\n"
" ... The layout is the same as the output of decoderawtransaction.\n"
" },\n"
" \"unknown\" : { (json object) The unknown global fields\n"
" \"key\" : \"value\" (key-value pair) An unknown key-value pair\n"
" ...\n"
" },\n"
" \"inputs\" : [ (array of json objects)\n"
" {\n"
" \"non_witness_utxo\" : { (json object, optional) Decoded network transaction for non-witness UTXOs\n"
" ...\n"
" },\n"
" \"witness_utxo\" : { (json object, optional) Transaction output for witness UTXOs\n"
" \"amount\" : x.xxx, (numeric) The value in " + CURRENCY_UNIT + "\n"
" \"scriptPubKey\" : { (json object)\n"
" \"asm\" : \"asm\", (string) The asm\n"
" \"hex\" : \"hex\", (string) The hex\n"
" \"type\" : \"pubkeyhash\", (string) The type, eg 'pubkeyhash'\n"
" \"address\" : \"address\" (string) Defi address if there is one\n"
" }\n"
" },\n"
" \"partial_signatures\" : { (json object, optional)\n"
" \"pubkey\" : \"signature\", (string) The public key and signature that corresponds to it.\n"
" ,...\n"
" }\n"
" \"sighash\" : \"type\", (string, optional) The sighash type to be used\n"
" \"redeem_script\" : { (json object, optional)\n"
" \"asm\" : \"asm\", (string) The asm\n"
" \"hex\" : \"hex\", (string) The hex\n"
" \"type\" : \"pubkeyhash\", (string) The type, eg 'pubkeyhash'\n"
" }\n"
" \"witness_script\" : { (json object, optional)\n"
" \"asm\" : \"asm\", (string) The asm\n"
" \"hex\" : \"hex\", (string) The hex\n"
" \"type\" : \"pubkeyhash\", (string) The type, eg 'pubkeyhash'\n"
" }\n"
" \"bip32_derivs\" : { (json object, optional)\n"
" \"pubkey\" : { (json object, optional) The public key with the derivation path as the value.\n"
" \"master_fingerprint\" : \"fingerprint\" (string) The fingerprint of the master key\n"
" \"path\" : \"path\", (string) The path\n"
" }\n"
" ,...\n"
" }\n"
" \"final_scriptsig\" : { (json object, optional)\n"
" \"asm\" : \"asm\", (string) The asm\n"
" \"hex\" : \"hex\", (string) The hex\n"
" }\n"
" \"final_scriptwitness\": [\"hex\", ...] (array of string) hex-encoded witness data (if any)\n"
" \"unknown\" : { (json object) The unknown global fields\n"
" \"key\" : \"value\" (key-value pair) An unknown key-value pair\n"
" ...\n"
" },\n"
" }\n"
" ,...\n"
" ]\n"
" \"outputs\" : [ (array of json objects)\n"
" {\n"