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authorAndrew Chow <achow101-github@achow101.com>2018-06-28 19:04:40 -0700
committerAndrew Chow <achow101-github@achow101.com>2018-07-16 16:08:24 -0700
commitc27fe419efb3b6588c400d764122ffb33375e028 (patch)
tree710267c171e804f20286191f1495c66ca59683cf /src
parent8b5ef2793748065727a9a2498805ae5b269dcb4f (diff)
Create utility RPCs for PSBT
decodepsbt takes a PSBT and decodes it to JSON combinepsbt takes multiple PSBTs for the same tx and combines them. finalizepsbt takes a PSBT and finalizes the inputs. If all inputs are final, it extracts the network serialized transaction and returns that instead of a PSBT unless instructed otherwise. createpsbt is like createrawtransaction but for PSBTs instead of raw transactions. convertpsbt takes a network serialized transaction and converts it into a psbt. The resulting psbt will lose all signature data and an explicit flag must be set to allow transactions with signature data to be converted.
Diffstat (limited to 'src')
-rw-r--r--src/core_io.h4
-rw-r--r--src/core_read.cpp18
-rw-r--r--src/core_write.cpp23
-rw-r--r--src/rpc/client.cpp8
-rw-r--r--src/rpc/rawtransaction.cpp553
5 files changed, 606 insertions, 0 deletions
diff --git a/src/core_io.h b/src/core_io.h
index 1d87d21d40..d364bca8b1 100644
--- a/src/core_io.h
+++ b/src/core_io.h
@@ -14,6 +14,7 @@ class CBlock;
class CScript;
class CTransaction;
struct CMutableTransaction;
+struct PartiallySignedTransaction;
class uint256;
class UniValue;
@@ -24,12 +25,15 @@ bool DecodeHexTx(CMutableTransaction& tx, const std::string& hex_tx, bool try_no
bool DecodeHexBlk(CBlock&, const std::string& strHexBlk);
uint256 ParseHashStr(const std::string&, const std::string& strName);
std::vector<unsigned char> ParseHexUV(const UniValue& v, const std::string& strName);
+bool DecodePSBT(PartiallySignedTransaction& psbt, const std::string& base64_tx, std::string& error);
// core_write.cpp
UniValue ValueFromAmount(const CAmount& amount);
std::string FormatScript(const CScript& script);
std::string EncodeHexTx(const CTransaction& tx, const int serializeFlags = 0);
+std::string SighashToStr(unsigned char sighash_type);
void ScriptPubKeyToUniv(const CScript& scriptPubKey, UniValue& out, bool fIncludeHex);
+void ScriptToUniv(const CScript& script, UniValue& out, bool include_address);
void TxToUniv(const CTransaction& tx, const uint256& hashBlock, UniValue& entry, bool include_hex = true, int serialize_flags = 0);
#endif // BITCOIN_CORE_IO_H
diff --git a/src/core_read.cpp b/src/core_read.cpp
index 4d851610ef..7ee3edc1f3 100644
--- a/src/core_read.cpp
+++ b/src/core_read.cpp
@@ -7,6 +7,7 @@
#include <primitives/block.h>
#include <primitives/transaction.h>
#include <script/script.h>
+#include <script/sign.h>
#include <serialize.h>
#include <streams.h>
#include <univalue.h>
@@ -160,6 +161,23 @@ bool DecodeHexBlk(CBlock& block, const std::string& strHexBlk)
return true;
}
+bool DecodePSBT(PartiallySignedTransaction& psbt, const std::string& base64_tx, std::string& error)
+{
+ std::vector<unsigned char> tx_data = DecodeBase64(base64_tx.c_str());
+ CDataStream ss_data(tx_data, SER_NETWORK, PROTOCOL_VERSION);
+ try {
+ ss_data >> psbt;
+ if (!ss_data.empty()) {
+ error = "extra data after PSBT";
+ return false;
+ }
+ } catch (const std::exception& e) {
+ error = e.what();
+ return false;
+ }
+ return true;
+}
+
uint256 ParseHashStr(const std::string& strHex, const std::string& strName)
{
if (!IsHex(strHex)) // Note: IsHex("") is false
diff --git a/src/core_write.cpp b/src/core_write.cpp
index ee6737201b..1272266235 100644
--- a/src/core_write.cpp
+++ b/src/core_write.cpp
@@ -70,6 +70,13 @@ const std::map<unsigned char, std::string> mapSigHashTypes = {
{static_cast<unsigned char>(SIGHASH_SINGLE|SIGHASH_ANYONECANPAY), std::string("SINGLE|ANYONECANPAY")},
};
+std::string SighashToStr(unsigned char sighash_type)
+{
+ const auto& it = mapSigHashTypes.find(sighash_type);
+ if (it == mapSigHashTypes.end()) return "";
+ return it->second;
+}
+
/**
* Create the assembly string representation of a CScript object.
* @param[in] script CScript object to convert into the asm string representation.
@@ -128,6 +135,22 @@ std::string EncodeHexTx(const CTransaction& tx, const int serializeFlags)
return HexStr(ssTx.begin(), ssTx.end());
}
+void ScriptToUniv(const CScript& script, UniValue& out, bool include_address)
+{
+ out.pushKV("asm", ScriptToAsmStr(script));
+ out.pushKV("hex", HexStr(script.begin(), script.end()));
+
+ std::vector<std::vector<unsigned char>> solns;
+ txnouttype type;
+ Solver(script, type, solns);
+ out.pushKV("type", GetTxnOutputType(type));
+
+ CTxDestination address;
+ if (include_address && ExtractDestination(script, address)) {
+ out.pushKV("address", EncodeDestination(address));
+ }
+}
+
void ScriptPubKeyToUniv(const CScript& scriptPubKey,
UniValue& out, bool fIncludeHex)
{
diff --git a/src/rpc/client.cpp b/src/rpc/client.cpp
index 0f35fd3770..d97165b301 100644
--- a/src/rpc/client.cpp
+++ b/src/rpc/client.cpp
@@ -109,6 +109,14 @@ static const CRPCConvertParam vRPCConvertParams[] =
{ "combinerawtransaction", 0, "txs" },
{ "fundrawtransaction", 1, "options" },
{ "fundrawtransaction", 2, "iswitness" },
+ { "createpsbt", 0, "inputs" },
+ { "createpsbt", 1, "outputs" },
+ { "createpsbt", 2, "locktime" },
+ { "createpsbt", 3, "replaceable" },
+ { "combinepsbt", 0, "txs"},
+ { "finalizepsbt", 1, "extract"},
+ { "converttopsbt", 1, "permitsigdata"},
+ { "converttopsbt", 2, "iswitness"},
{ "gettxout", 1, "n" },
{ "gettxout", 2, "include_mempool" },
{ "gettxoutproof", 0, "txids" },
diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp
index c27601e47f..797c8b6973 100644
--- a/src/rpc/rawtransaction.cpp
+++ b/src/rpc/rawtransaction.cpp
@@ -5,6 +5,7 @@
#include <chain.h>
#include <coins.h>
+#include <compat/byteswap.h>
#include <consensus/validation.h>
#include <core_io.h>
#include <index/txindex.h>
@@ -1259,6 +1260,553 @@ static UniValue testmempoolaccept(const JSONRPCRequest& request)
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)
+{
+ if (request.fHelp || request.params.size() != 1)
+ throw std::runtime_error(
+ "decodepsbt \"psbt\"\n"
+ "\nReturn a JSON object representing the serialized, base64-encoded partially signed Bitcoin transaction.\n"
+
+ "\nArguments:\n"
+ "1. \"psbt\" (string, required) The PSBT base64 string\n"
+
+ "\nResult:\n"
+ "{\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) Bitcoin 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"
+ " \"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\" : [ (array of json objects, optional)\n"
+ " {\n"
+ " \"pubkey\" : \"pubkey\", (string) The public key this path corresponds to\n"
+ " \"master_fingerprint\" : \"fingerprint\" (string) The fingerprint of the master key\n"
+ " \"path\" : \"path\", (string) The path\n"
+ " }\n"
+ " }\n"
+ " ,...\n"
+ " ],\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"
+ " \"fee\" : fee (numeric, optional) The transaction fee paid if all UTXOs slots in the PSBT have been filled.\n"
+ "}\n"
+
+ "\nExamples:\n"
+ + HelpExampleCli("decodepsbt", "\"psbt\"")
+ );
+
+ RPCTypeCheck(request.params, {UniValue::VSTR});
+
+ // Unserialize the transactions
+ PartiallySignedTransaction psbtx;
+ std::string error;
+ if (!DecodePSBT(psbtx, request.params[0].get_str(), error)) {
+ throw JSONRPCError(RPC_DESERIALIZATION_ERROR, strprintf("TX decode failed %s", error));
+ }
+
+ UniValue result(UniValue::VOBJ);
+
+ // Add the decoded tx
+ UniValue tx_univ(UniValue::VOBJ);
+ TxToUniv(CTransaction(*psbtx.tx), uint256(), tx_univ, false);
+ result.pushKV("tx", tx_univ);
+
+ // Unknown data
+ UniValue unknowns(UniValue::VOBJ);
+ for (auto entry : psbtx.unknown) {
+ unknowns.pushKV(HexStr(entry.first), HexStr(entry.second));
+ }
+ result.pushKV("unknown", unknowns);
+
+ // inputs
+ CAmount total_in = 0;
+ bool have_all_utxos = true;
+ UniValue inputs(UniValue::VARR);
+ for (unsigned int i = 0; i < psbtx.inputs.size(); ++i) {
+ const PSBTInput& input = psbtx.inputs[i];
+ UniValue in(UniValue::VOBJ);
+ // UTXOs
+ if (!input.witness_utxo.IsNull()) {
+ const CTxOut& txout = input.witness_utxo;
+
+ UniValue out(UniValue::VOBJ);
+
+ out.pushKV("amount", ValueFromAmount(txout.nValue));
+ total_in += txout.nValue;
+
+ UniValue o(UniValue::VOBJ);
+ ScriptToUniv(txout.scriptPubKey, o, true);
+ out.pushKV("scriptPubKey", o);
+ in.pushKV("witness_utxo", out);
+ } else if (input.non_witness_utxo) {
+ UniValue non_wit(UniValue::VOBJ);
+ TxToUniv(*input.non_witness_utxo, uint256(), non_wit, false);
+ in.pushKV("non_witness_utxo", non_wit);
+ total_in += input.non_witness_utxo->vout[psbtx.tx->vin[i].prevout.n].nValue;
+ } else {
+ have_all_utxos = false;
+ }
+
+ // Partial sigs
+ if (!input.partial_sigs.empty()) {
+ UniValue partial_sigs(UniValue::VOBJ);
+ for (const auto& sig : input.partial_sigs) {
+ partial_sigs.pushKV(HexStr(sig.second.first), HexStr(sig.second.second));
+ }
+ in.pushKV("partial_signatures", partial_sigs);
+ }
+
+ // Sighash
+ if (input.sighash_type > 0) {
+ in.pushKV("sighash", SighashToStr((unsigned char)input.sighash_type));
+ }
+
+ // Redeem script and witness script
+ if (!input.redeem_script.empty()) {
+ UniValue r(UniValue::VOBJ);
+ ScriptToUniv(input.redeem_script, r, false);
+ in.pushKV("redeem_script", r);
+ }
+ if (!input.witness_script.empty()) {
+ UniValue r(UniValue::VOBJ);
+ ScriptToUniv(input.witness_script, r, false);
+ in.pushKV("witness_script", r);
+ }
+
+ // keypaths
+ if (!input.hd_keypaths.empty()) {
+ UniValue keypaths(UniValue::VARR);
+ for (auto entry : input.hd_keypaths) {
+ UniValue keypath(UniValue::VOBJ);
+ keypath.pushKV("pubkey", HexStr(entry.first));
+
+ uint32_t fingerprint = entry.second.at(0);
+ keypath.pushKV("master_fingerprint", strprintf("%08x", bswap_32(fingerprint)));
+
+ entry.second.erase(entry.second.begin());
+ keypath.pushKV("path", WriteHDKeypath(entry.second));
+ keypaths.push_back(keypath);
+ }
+ in.pushKV("bip32_derivs", keypaths);
+ }
+
+ // Final scriptSig and scriptwitness
+ if (!input.final_script_sig.empty()) {
+ UniValue scriptsig(UniValue::VOBJ);
+ scriptsig.pushKV("asm", ScriptToAsmStr(input.final_script_sig, true));
+ scriptsig.pushKV("hex", HexStr(input.final_script_sig));
+ in.pushKV("final_scriptSig", scriptsig);
+ }
+ if (!input.final_script_witness.IsNull()) {
+ UniValue txinwitness(UniValue::VARR);
+ for (const auto& item : input.final_script_witness.stack) {
+ txinwitness.push_back(HexStr(item.begin(), item.end()));
+ }
+ in.pushKV("final_scriptwitness", txinwitness);
+ }
+
+ // Unknown data
+ if (input.unknown.size() > 0) {
+ UniValue unknowns(UniValue::VOBJ);
+ for (auto entry : input.unknown) {
+ unknowns.pushKV(HexStr(entry.first), HexStr(entry.second));
+ }
+ in.pushKV("unknown", unknowns);
+ }
+
+ inputs.push_back(in);
+ }
+ result.pushKV("inputs", inputs);
+
+ // outputs
+ CAmount output_value = 0;
+ UniValue outputs(UniValue::VARR);
+ for (unsigned int i = 0; i < psbtx.outputs.size(); ++i) {
+ const PSBTOutput& output = psbtx.outputs[i];
+ UniValue out(UniValue::VOBJ);
+ // Redeem script and witness script
+ if (!output.redeem_script.empty()) {
+ UniValue r(UniValue::VOBJ);
+ ScriptToUniv(output.redeem_script, r, false);
+ out.pushKV("redeem_script", r);
+ }
+ if (!output.witness_script.empty()) {
+ UniValue r(UniValue::VOBJ);
+ ScriptToUniv(output.witness_script, r, false);
+ out.pushKV("witness_script", r);
+ }
+
+ // keypaths
+ if (!output.hd_keypaths.empty()) {
+ UniValue keypaths(UniValue::VARR);
+ for (auto entry : output.hd_keypaths) {
+ UniValue keypath(UniValue::VOBJ);
+ keypath.pushKV("pubkey", HexStr(entry.first));
+
+ uint32_t fingerprint = entry.second.at(0);
+ keypath.pushKV("master_fingerprint", strprintf("%08x", bswap_32(fingerprint)));
+
+ entry.second.erase(entry.second.begin());
+ keypath.pushKV("path", WriteHDKeypath(entry.second));
+ keypaths.push_back(keypath);
+ }
+ out.pushKV("bip32_derivs", keypaths);
+ }
+
+ // Unknown data
+ if (output.unknown.size() > 0) {
+ UniValue unknowns(UniValue::VOBJ);
+ for (auto entry : output.unknown) {
+ unknowns.pushKV(HexStr(entry.first), HexStr(entry.second));
+ }
+ out.pushKV("unknown", unknowns);
+ }
+
+ outputs.push_back(out);
+
+ // Fee calculation
+ output_value += psbtx.tx->vout[i].nValue;
+ }
+ result.pushKV("outputs", outputs);
+ if (have_all_utxos) {
+ result.pushKV("fee", ValueFromAmount(total_in - output_value));
+ }
+
+ return result;
+}
+
+UniValue combinepsbt(const JSONRPCRequest& request)
+{
+ if (request.fHelp || request.params.size() != 1)
+ throw std::runtime_error(
+ "combinepsbt [\"psbt\",...]\n"
+ "\nCombine multiple partially signed Bitcoin transactions into one transaction.\n"
+ "Implements the Combiner role.\n"
+ "\nArguments:\n"
+ "1. \"txs\" (string) A json array of base64 strings of partially signed transactions\n"
+ " [\n"
+ " \"psbt\" (string) A base64 string of a PSBT\n"
+ " ,...\n"
+ " ]\n"
+
+ "\nResult:\n"
+ " \"psbt\" (string) The base64-encoded partially signed transaction\n"
+ "\nExamples:\n"
+ + HelpExampleCli("combinepsbt", "[\"mybase64_1\", \"mybase64_2\", \"mybase64_3\"]")
+ );
+
+ RPCTypeCheck(request.params, {UniValue::VARR}, true);
+
+ // Unserialize the transactions
+ std::vector<PartiallySignedTransaction> psbtxs;
+ UniValue txs = request.params[0].get_array();
+ for (unsigned int i = 0; i < txs.size(); ++i) {
+ PartiallySignedTransaction psbtx;
+ std::string error;
+ if (!DecodePSBT(psbtx, txs[i].get_str(), error)) {
+ throw JSONRPCError(RPC_DESERIALIZATION_ERROR, strprintf("TX decode failed %s", error));
+ }
+ psbtxs.push_back(psbtx);
+ }
+
+ PartiallySignedTransaction merged_psbt(psbtxs[0]); // Copy the first one
+
+ // Merge
+ for (auto it = std::next(psbtxs.begin()); it != psbtxs.end(); ++it) {
+ if (*it != merged_psbt) {
+ throw JSONRPCError(RPC_INVALID_PARAMETER, "PSBTs do not refer to the same transactions.");
+ }
+ merged_psbt.Merge(*it);
+ }
+ if (!merged_psbt.IsSane()) {
+ throw JSONRPCError(RPC_INVALID_PARAMETER, "Merged PSBT is inconsistent");
+ }
+
+ UniValue result(UniValue::VOBJ);
+ CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
+ ssTx << merged_psbt;
+ return EncodeBase64((unsigned char*)ssTx.data(), ssTx.size());
+}
+
+UniValue finalizepsbt(const JSONRPCRequest& request)
+{
+ if (request.fHelp || request.params.size() < 1 || request.params.size() > 2)
+ throw std::runtime_error(
+ "finalizepsbt \"psbt\" ( extract )\n"
+ "Finalize the inputs of a PSBT. If the transaction is fully signed, it will produce a\n"
+ "network serialized transaction which can be broadcast with sendrawtransaction. Otherwise a PSBT will be\n"
+ "created which has the final_scriptSig and final_scriptWitness fields filled for inputs that are complete.\n"
+ "Implements the Finalizer and Extractor roles.\n"
+ "\nArguments:\n"
+ "1. \"psbt\" (string) A base64 string of a PSBT\n"
+ "2. \"extract\" (boolean, optional, default=true) If true and the transaction is complete, \n"
+ " extract and return the complete transaction in normal network serialization instead of the PSBT.\n"
+
+ "\nResult:\n"
+ "{\n"
+ " \"psbt\" : \"value\", (string) The base64-encoded partially signed transaction if not extracted\n"
+ " \"hex\" : \"value\", (string) The hex-encoded network transaction if extracted\n"
+ " \"complete\" : true|false, (boolean) If the transaction has a complete set of signatures\n"
+ " ]\n"
+ "}\n"
+
+ "\nExamples:\n"
+ + HelpExampleCli("finalizepsbt", "\"psbt\"")
+ );
+
+ RPCTypeCheck(request.params, {UniValue::VSTR, UniValue::VBOOL}, true);
+
+ // Unserialize the transactions
+ PartiallySignedTransaction psbtx;
+ std::string error;
+ if (!DecodePSBT(psbtx, request.params[0].get_str(), error)) {
+ throw JSONRPCError(RPC_DESERIALIZATION_ERROR, strprintf("TX decode failed %s", error));
+ }
+
+ // Get all of the previous transactions
+ bool complete = true;
+ for (unsigned int i = 0; i < psbtx.tx->vin.size(); ++i) {
+ PSBTInput& input = psbtx.inputs.at(i);
+
+ SignatureData sigdata;
+ complete &= SignPSBTInput(DUMMY_SIGNING_PROVIDER, *psbtx.tx, input, sigdata, i, 1);
+ }
+
+ UniValue result(UniValue::VOBJ);
+ CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
+ bool extract = request.params[1].isNull() || (!request.params[1].isNull() && request.params[1].get_bool());
+ if (complete && extract) {
+ CMutableTransaction mtx(*psbtx.tx);
+ for (unsigned int i = 0; i < mtx.vin.size(); ++i) {
+ mtx.vin[i].scriptSig = psbtx.inputs[i].final_script_sig;
+ mtx.vin[i].scriptWitness = psbtx.inputs[i].final_script_witness;
+ }
+ ssTx << mtx;
+ result.push_back(Pair("hex", HexStr(ssTx.begin(), ssTx.end())));
+ } else {
+ ssTx << psbtx;
+ result.push_back(Pair("psbt", EncodeBase64((unsigned char*)ssTx.data(), ssTx.size())));
+ }
+ result.push_back(Pair("complete", complete));
+
+ return result;
+}
+
+UniValue createpsbt(const JSONRPCRequest& request)
+{
+ if (request.fHelp || request.params.size() < 2 || request.params.size() > 4)
+ throw std::runtime_error(
+ "createpsbt [{\"txid\":\"id\",\"vout\":n},...] [{\"address\":amount},{\"data\":\"hex\"},...] ( locktime ) ( replaceable )\n"
+ "\nCreates a transaction in the Partially Signed Transaction format.\n"
+ "Implements the Creator role.\n"
+ "\nArguments:\n"
+ "1. \"inputs\" (array, 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\" (array, required) a json array with outputs (key-value pairs)\n"
+ " [\n"
+ " {\n"
+ " \"address\": x.xxx, (obj, optional) A key-value pair. The key (string) is the bitcoin address, the value (float or string) is the amount in " + CURRENCY_UNIT + "\n"
+ " },\n"
+ " {\n"
+ " \"data\": \"hex\" (obj, optional) A key-value pair. The key must be \"data\", the value is hex encoded data\n"
+ " }\n"
+ " ,... More key-value pairs of the above form. For compatibility reasons, a dictionary, which holds the key-value pairs directly, is also\n"
+ " accepted as second parameter.\n"
+ " ]\n"
+ "3. locktime (numeric, optional, default=0) Raw locktime. Non-0 value also locktime-activates inputs\n"
+ "4. replaceable (boolean, optional, 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.\n"
+ "\nResult:\n"
+ " \"psbt\" (string) The resulting raw transaction (base64-encoded string)\n"
+ "\nExamples:\n"
+ + HelpExampleCli("createpsbt", "\"[{\\\"txid\\\":\\\"myid\\\",\\\"vout\\\":0}]\" \"[{\\\"data\\\":\\\"00010203\\\"}]\"")
+ );
+
+
+ RPCTypeCheck(request.params, {
+ UniValue::VARR,
+ UniValueType(), // ARR or OBJ, checked later
+ UniValue::VNUM,
+ UniValue::VBOOL,
+ }, true
+ );
+
+ CMutableTransaction rawTx = ConstructTransaction(request.params[0], request.params[1], request.params[2], request.params[3]);
+
+ // Make a blank psbt
+ PartiallySignedTransaction psbtx;
+ psbtx.tx = rawTx;
+ for (unsigned int i = 0; i < rawTx.vin.size(); ++i) {
+ psbtx.inputs.push_back(PSBTInput());
+ }
+ for (unsigned int i = 0; i < rawTx.vout.size(); ++i) {
+ psbtx.outputs.push_back(PSBTOutput());
+ }
+
+ // Serialize the PSBT
+ CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
+ ssTx << psbtx;
+
+ return EncodeBase64((unsigned char*)ssTx.data(), ssTx.size());
+}
+
+UniValue converttopsbt(const JSONRPCRequest& request)
+{
+ if (request.fHelp || request.params.size() < 1 || request.params.size() > 3)
+ throw std::runtime_error(
+ "converttopsbt \"hexstring\" ( permitsigdata iswitness )\n"
+ "\nConverts a network serialized transaction to a PSBT. This should be used only with createrawtransaction and fundrawtransaction\n"
+ "createpsbt and walletcreatefundedpsbt should be used for new applications.\n"
+ "\nArguments:\n"
+ "1. \"hexstring\" (string, required) The hex string of a raw transaction\n"
+ "2. permitsigdata (boolean, optional, default=false) If true, any signatures in the input will be discarded and conversion.\n"
+ " will continue. If false, RPC will fail if any signatures are present.\n"
+ "3. iswitness (boolean, optional) Whether the transaction hex is a serialized witness transaction.\n"
+ " If iswitness is not present, heuristic tests will be used in decoding. If true, only witness deserializaion\n"
+ " will be tried. If false, only non-witness deserialization wil be tried. Only has an effect if\n"
+ " permitsigdata is true.\n"
+ "\nResult:\n"
+ " \"psbt\" (string) The resulting raw transaction (base64-encoded string)\n"
+ "\nExamples:\n"
+ "\nCreate a transaction\n"
+ + HelpExampleCli("createrawtransaction", "\"[{\\\"txid\\\":\\\"myid\\\",\\\"vout\\\":0}]\" \"[{\\\"data\\\":\\\"00010203\\\"}]\"") +
+ "\nConvert the transaction to a PSBT\n"
+ + HelpExampleCli("converttopsbt", "\"rawtransaction\"")
+ );
+
+
+ RPCTypeCheck(request.params, {UniValue::VSTR, UniValue::VBOOL, UniValue::VBOOL}, true);
+
+ // parse hex string from parameter
+ CMutableTransaction tx;
+ bool permitsigdata = request.params[1].isNull() ? false : request.params[1].get_bool();
+ bool witness_specified = !request.params[2].isNull();
+ bool iswitness = witness_specified ? request.params[2].get_bool() : false;
+ bool try_witness = permitsigdata ? (witness_specified ? iswitness : true) : false;
+ bool try_no_witness = permitsigdata ? (witness_specified ? !iswitness : true) : true;
+ if (!DecodeHexTx(tx, request.params[0].get_str(), try_no_witness, try_witness)) {
+ throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX decode failed");
+ }
+
+ // Remove all scriptSigs and scriptWitnesses from inputs
+ for (CTxIn& input : tx.vin) {
+ if ((!input.scriptSig.empty() || !input.scriptWitness.IsNull()) && (request.params[1].isNull() || (!request.params[1].isNull() && request.params[1].get_bool()))) {
+ throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "Inputs must not have scriptSigs and scriptWitnesses");
+ }
+ input.scriptSig.clear();
+ input.scriptWitness.SetNull();
+ }
+
+ // Make a blank psbt
+ PartiallySignedTransaction psbtx;
+ psbtx.tx = tx;
+ for (unsigned int i = 0; i < tx.vin.size(); ++i) {
+ psbtx.inputs.push_back(PSBTInput());
+ }
+ for (unsigned int i = 0; i < tx.vout.size(); ++i) {
+ psbtx.outputs.push_back(PSBTOutput());
+ }
+
+ // Serialize the PSBT
+ CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
+ ssTx << psbtx;
+
+ return EncodeBase64((unsigned char*)ssTx.data(), ssTx.size());
+}
+
static const CRPCCommand commands[] =
{ // category name actor (function) argNames
// --------------------- ------------------------ ----------------------- ----------
@@ -1271,6 +1819,11 @@ static const CRPCCommand commands[] =
{ "rawtransactions", "signrawtransaction", &signrawtransaction, {"hexstring","prevtxs","privkeys","sighashtype"} }, /* uses wallet if enabled */
{ "rawtransactions", "signrawtransactionwithkey", &signrawtransactionwithkey, {"hexstring","privkeys","prevtxs","sighashtype"} },
{ "rawtransactions", "testmempoolaccept", &testmempoolaccept, {"rawtxs","allowhighfees"} },
+ { "rawtransactions", "decodepsbt", &decodepsbt, {"psbt"} },
+ { "rawtransactions", "combinepsbt", &combinepsbt, {"txs"} },
+ { "rawtransactions", "finalizepsbt", &finalizepsbt, {"psbt", "extract"} },
+ { "rawtransactions", "createpsbt", &createpsbt, {"inputs","outputs","locktime","replaceable"} },
+ { "rawtransactions", "converttopsbt", &converttopsbt, {"hexstring","permitsigdata","iswitness"} },
{ "blockchain", "gettxoutproof", &gettxoutproof, {"txids", "blockhash"} },
{ "blockchain", "verifytxoutproof", &verifytxoutproof, {"proof"} },