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[build] Move rpc rawtransaction util functions to rpc/rawtransaction_util.cpp

Browse source 
rpc/rawtransaction.cpp moves to libbitcoin_server since it should not be
accessed by non-node libraries. The utility following utility methods
move to their own unit rpc/rawtransaction_util since they need to be
accessed by non-node libraries:

- `ConstructTransaction`
- `TxInErrorToJSON`
- `SignTransaction`
This commit is contained in:
John Newbery 2019-04-02 16:51:32 -04:00
parent 1acc61f874
commit 0509465542
5 changed files with 301 additions and 283 deletions
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3
src/Makefile.am
View file

@ -176,7 +176,7 @@ BITCOIN_CORE_H = \
rpc/mining.h \
rpc/protocol.h \
rpc/server.h \
rpc/rawtransaction.h \
rpc/rawtransaction_util.h \
rpc/register.h \
rpc/util.h \
scheduler.h \
@ -439,6 +439,7 @@ libbitcoin_common_a_SOURCES = \
policy/policy.cpp \
protocol.cpp \
psbt.cpp \
rpc/rawtransaction_util.cpp \
rpc/util.cpp \
scheduler.cpp \
script/descriptor.cpp \

278
src/rpc/rawtransaction.cpp
View file

@ -20,7 +20,7 @@
#include <policy/rbf.h>
#include <primitives/transaction.h>
#include <psbt.h>
#include <rpc/rawtransaction.h>
#include <rpc/rawtransaction_util.h>
#include <rpc/server.h>
#include <rpc/util.h>
#include <script/script.h>
@ -359,119 +359,6 @@ static UniValue verifytxoutproof(const JSONRPCRequest& request)
return res;
}
CMutableTransaction ConstructTransaction(const UniValue& inputs_in, const UniValue& outputs_in, const UniValue& locktime, const UniValue& rbf)
{
if (inputs_in.isNull() || outputs_in.isNull())
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, arguments 1 and 2 must be non-null");
UniValue inputs = inputs_in.get_array();
const bool outputs_is_obj = outputs_in.isObject();
UniValue outputs = outputs_is_obj ? outputs_in.get_obj() : outputs_in.get_array();
CMutableTransaction rawTx;
if (!locktime.isNull()) {
int64_t nLockTime = locktime.get_int64();
if (nLockTime < 0 || nLockTime > LOCKTIME_MAX)
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, locktime out of range");
rawTx.nLockTime = nLockTime;
}
bool rbfOptIn = rbf.isTrue();
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;
if (rbfOptIn) {
nSequence = MAX_BIP125_RBF_SEQUENCE; /* CTxIn::SEQUENCE_FINAL - 2 */
} else if (rawTx.nLockTime) {
nSequence = CTxIn::SEQUENCE_FINAL - 1;
} else {
nSequence = 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);
}
if (!outputs_is_obj) {
// Translate array of key-value pairs into dict
UniValue outputs_dict = UniValue(UniValue::VOBJ);
for (size_t i = 0; i < outputs.size(); ++i) {
const UniValue& output = outputs[i];
if (!output.isObject()) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, key-value pair not an object as expected");
}
if (output.size() != 1) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, key-value pair must contain exactly one key");
}
outputs_dict.pushKVs(output);
}
outputs = std::move(outputs_dict);
}
// Duplicate checking
std::set<CTxDestination> destinations;
bool has_data{false};
for (const std::string& name_ : outputs.getKeys()) {
if (name_ == "data") {
if (has_data) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, duplicate key: data");
}
has_data = true;
std::vector<unsigned char> data = ParseHexV(outputs[name_].getValStr(), "Data");
CTxOut out(0, CScript() << OP_RETURN << data);
rawTx.vout.push_back(out);
} else {
CTxDestination destination = DecodeDestination(name_);
if (!IsValidDestination(destination)) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, std::string("Invalid Bitcoin address: ") + name_);
}
if (!destinations.insert(destination).second) {
throw JSONRPCError(RPC_INVALID_PARAMETER, std::string("Invalid parameter, duplicated address: ") + name_);
}
CScript scriptPubKey = GetScriptForDestination(destination);
CAmount nAmount = AmountFromValue(outputs[name_]);
CTxOut out(nAmount, scriptPubKey);
rawTx.vout.push_back(out);
}
}
if (!rbf.isNull() && rawTx.vin.size() > 0 && rbfOptIn != SignalsOptInRBF(CTransaction(rawTx))) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter combination: Sequence number(s) contradict replaceable option");
}
return rawTx;
}
static UniValue createrawtransaction(const JSONRPCRequest& request)
{
if (request.fHelp || request.params.size() < 2 || request.params.size() > 4) {
@ -717,23 +604,6 @@ static UniValue decodescript(const JSONRPCRequest& request)
return r;
}
/** Pushes a JSON object for script verification or signing errors to vErrorsRet. */
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);
UniValue witness(UniValue::VARR);
for (unsigned int i = 0; i < txin.scriptWitness.stack.size(); i++) {
witness.push_back(HexStr(txin.scriptWitness.stack[i].begin(), txin.scriptWitness.stack[i].end()));
}
entry.pushKV("witness", witness);
entry.pushKV("scriptSig", HexStr(txin.scriptSig.begin(), txin.scriptSig.end()));
entry.pushKV("sequence", (uint64_t)txin.nSequence);
entry.pushKV("error", strMessage);
vErrorsRet.push_back(entry);
}
static UniValue combinerawtransaction(const JSONRPCRequest& request)
{
if (request.fHelp || request.params.size() != 1)
@ -818,152 +688,6 @@ static UniValue combinerawtransaction(const JSONRPCRequest& request)
return EncodeHexTx(CTransaction(mergedTx));
}
// TODO(https://github.com/bitcoin/bitcoin/pull/10973#discussion_r267084237):
// This function is called from both wallet and node rpcs
// (signrawtransactionwithwallet and signrawtransactionwithkey). It should be
// moved to a util file so wallet code doesn't need to link against node code.
// Also the dependency on interfaces::Chain should be removed, so
// signrawtransactionwithkey doesn't need access to a Chain instance.
UniValue SignTransaction(interfaces::Chain& chain, CMutableTransaction& mtx, const UniValue& prevTxsUnival, CBasicKeyStore *keystore, bool is_temp_keystore, const UniValue& hashType)
{
// 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.
}
chain.findCoins(coins);
// Add previous txouts given in the RPC call:
if (!prevTxsUnival.isNull()) {
UniValue prevTxs = prevTxsUnival.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());
{
auto coin = coins.find(out);
if (coin != coins.end() && !coin->second.IsSpent() && coin->second.out.scriptPubKey != scriptPubKey) {
std::string err("Previous output scriptPubKey mismatch:\n");
err = err + ScriptToAsmStr(coin->second.out.scriptPubKey) + "\nvs:\n"+
ScriptToAsmStr(scriptPubKey);
throw JSONRPCError(RPC_DESERIALIZATION_ERROR, err);
}
Coin newcoin;
newcoin.out.scriptPubKey = scriptPubKey;
newcoin.out.nValue = MAX_MONEY;
if (prevOut.exists("amount")) {
newcoin.out.nValue = AmountFromValue(find_value(prevOut, "amount"));
}
newcoin.nHeight = 1;
coins[out] = std::move(newcoin);
}
// if redeemScript and private keys were given, add redeemScript to the keystore so it can be signed
if (is_temp_keystore && (scriptPubKey.IsPayToScriptHash() || scriptPubKey.IsPayToWitnessScriptHash())) {
RPCTypeCheckObj(prevOut,
{
{"redeemScript", UniValueType(UniValue::VSTR)},
{"witnessScript", UniValueType(UniValue::VSTR)},
}, true);
UniValue rs = find_value(prevOut, "redeemScript");
if (!rs.isNull()) {
std::vector<unsigned char> rsData(ParseHexV(rs, "redeemScript"));
CScript redeemScript(rsData.begin(), rsData.end());
keystore->AddCScript(redeemScript);
// Automatically also add the P2WSH wrapped version of the script (to deal with P2SH-P2WSH).
// This is only for compatibility, it is encouraged to use the explicit witnessScript field instead.
keystore->AddCScript(GetScriptForWitness(redeemScript));
}
UniValue ws = find_value(prevOut, "witnessScript");
if (!ws.isNull()) {
std::vector<unsigned char> wsData(ParseHexV(ws, "witnessScript"));
CScript witnessScript(wsData.begin(), wsData.end());
keystore->AddCScript(witnessScript);
// Automatically also add the P2WSH wrapped version of the script (to deal with P2SH-P2WSH).
keystore->AddCScript(GetScriptForWitness(witnessScript));
}
}
}
}
int nHashType = ParseSighashString(hashType);
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(mtx);
// Sign what we can:
for (unsigned int i = 0; i < mtx.vin.size(); i++) {
CTxIn& txin = mtx.vin[i];
auto coin = coins.find(txin.prevout);
if (coin == coins.end() || coin->second.IsSpent()) {
TxInErrorToJSON(txin, vErrors, "Input not found or already spent");
continue;
}
const CScript& prevPubKey = coin->second.out.scriptPubKey;
const CAmount& amount = coin->second.out.nValue;
SignatureData sigdata = DataFromTransaction(mtx, i, coin->second.out);
// Only sign SIGHASH_SINGLE if there's a corresponding output:
if (!fHashSingle || (i < mtx.vout.size())) {
ProduceSignature(*keystore, MutableTransactionSignatureCreator(&mtx, i, amount, nHashType), prevPubKey, sigdata);
}
UpdateInput(txin, sigdata);
// amount must be specified for valid segwit signature
if (amount == MAX_MONEY && !txin.scriptWitness.IsNull()) {
throw JSONRPCError(RPC_TYPE_ERROR, strprintf("Missing amount for %s", coin->second.out.ToString()));
}
ScriptError serror = SCRIPT_ERR_OK;
if (!VerifyScript(txin.scriptSig, prevPubKey, &txin.scriptWitness, STANDARD_SCRIPT_VERIFY_FLAGS, TransactionSignatureChecker(&txConst, i, amount), &serror)) {
if (serror == SCRIPT_ERR_INVALID_STACK_OPERATION) {
// Unable to sign input and verification failed (possible attempt to partially sign).
TxInErrorToJSON(txin, vErrors, "Unable to sign input, invalid stack size (possibly missing key)");
} else {
TxInErrorToJSON(txin, vErrors, ScriptErrorString(serror));
}
}
}
bool fComplete = vErrors.empty();
UniValue result(UniValue::VOBJ);
result.pushKV("hex", EncodeHexTx(CTransaction(mtx)));
result.pushKV("complete", fComplete);
if (!vErrors.empty()) {
result.pushKV("errors", vErrors);
}
return result;
}
static UniValue signrawtransactionwithkey(const JSONRPCRequest& request)
{
if (request.fHelp || request.params.size() < 2 || request.params.size() > 4)

293
src/rpc/rawtransaction_util.cpp Normal file
View file

@ -0,0 +1,293 @@
// Copyright (c) 2010 Satoshi Nakamoto
// Copyright (c) 2009-2019 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <rpc/rawtransaction_util.h>
#include <coins.h>
#include <core_io.h>
#include <interfaces/chain.h>
#include <key_io.h>
#include <keystore.h>
#include <policy/policy.h>
#include <policy/rbf.h>
#include <primitives/transaction.h>
#include <rpc/protocol.h>
#include <rpc/util.h>
#include <tinyformat.h>
#include <univalue.h>
#include <util/strencodings.h>
CMutableTransaction ConstructTransaction(const UniValue& inputs_in, const UniValue& outputs_in, const UniValue& locktime, const UniValue& rbf)
{
if (inputs_in.isNull() || outputs_in.isNull())
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, arguments 1 and 2 must be non-null");
UniValue inputs = inputs_in.get_array();
const bool outputs_is_obj = outputs_in.isObject();
UniValue outputs = outputs_is_obj ? outputs_in.get_obj() : outputs_in.get_array();
CMutableTransaction rawTx;
if (!locktime.isNull()) {
int64_t nLockTime = locktime.get_int64();
if (nLockTime < 0 || nLockTime > LOCKTIME_MAX)
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, locktime out of range");
rawTx.nLockTime = nLockTime;
}
bool rbfOptIn = rbf.isTrue();
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;
if (rbfOptIn) {
nSequence = MAX_BIP125_RBF_SEQUENCE; /* CTxIn::SEQUENCE_FINAL - 2 */
} else if (rawTx.nLockTime) {
nSequence = CTxIn::SEQUENCE_FINAL - 1;
} else {
nSequence = 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);
}
if (!outputs_is_obj) {
// Translate array of key-value pairs into dict
UniValue outputs_dict = UniValue(UniValue::VOBJ);
for (size_t i = 0; i < outputs.size(); ++i) {
const UniValue& output = outputs[i];
if (!output.isObject()) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, key-value pair not an object as expected");
}
if (output.size() != 1) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, key-value pair must contain exactly one key");
}
outputs_dict.pushKVs(output);
}
outputs = std::move(outputs_dict);
}
// Duplicate checking
std::set<CTxDestination> destinations;
bool has_data{false};
for (const std::string& name_ : outputs.getKeys()) {
if (name_ == "data") {
if (has_data) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, duplicate key: data");
}
has_data = true;
std::vector<unsigned char> data = ParseHexV(outputs[name_].getValStr(), "Data");
CTxOut out(0, CScript() << OP_RETURN << data);
rawTx.vout.push_back(out);
} else {
CTxDestination destination = DecodeDestination(name_);
if (!IsValidDestination(destination)) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, std::string("Invalid Bitcoin address: ") + name_);
}
if (!destinations.insert(destination).second) {
throw JSONRPCError(RPC_INVALID_PARAMETER, std::string("Invalid parameter, duplicated address: ") + name_);
}
CScript scriptPubKey = GetScriptForDestination(destination);
CAmount nAmount = AmountFromValue(outputs[name_]);
CTxOut out(nAmount, scriptPubKey);
rawTx.vout.push_back(out);
}
}
if (!rbf.isNull() && rawTx.vin.size() > 0 && rbfOptIn != SignalsOptInRBF(CTransaction(rawTx))) {
throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter combination: Sequence number(s) contradict replaceable option");
}
return rawTx;
}
/** Pushes a JSON object for script verification or signing errors to vErrorsRet. */
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);
UniValue witness(UniValue::VARR);
for (unsigned int i = 0; i < txin.scriptWitness.stack.size(); i++) {
witness.push_back(HexStr(txin.scriptWitness.stack[i].begin(), txin.scriptWitness.stack[i].end()));
}
entry.pushKV("witness", witness);
entry.pushKV("scriptSig", HexStr(txin.scriptSig.begin(), txin.scriptSig.end()));
entry.pushKV("sequence", (uint64_t)txin.nSequence);
entry.pushKV("error", strMessage);
vErrorsRet.push_back(entry);
}
// TODO(https://github.com/bitcoin/bitcoin/pull/10973#discussion_r267084237):
// The dependency on interfaces::Chain should be removed, so
// signrawtransactionwithkey doesn't need access to a Chain instance.
UniValue SignTransaction(interfaces::Chain& chain, CMutableTransaction& mtx, const UniValue& prevTxsUnival, CBasicKeyStore *keystore, bool is_temp_keystore, const UniValue& hashType)
{
// 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.
}
chain.findCoins(coins);
// Add previous txouts given in the RPC call:
if (!prevTxsUnival.isNull()) {
UniValue prevTxs = prevTxsUnival.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());
{
auto coin = coins.find(out);
if (coin != coins.end() && !coin->second.IsSpent() && coin->second.out.scriptPubKey != scriptPubKey) {
std::string err("Previous output scriptPubKey mismatch:\n");
err = err + ScriptToAsmStr(coin->second.out.scriptPubKey) + "\nvs:\n"+
ScriptToAsmStr(scriptPubKey);
throw JSONRPCError(RPC_DESERIALIZATION_ERROR, err);
}
Coin newcoin;
newcoin.out.scriptPubKey = scriptPubKey;
newcoin.out.nValue = MAX_MONEY;
if (prevOut.exists("amount")) {
newcoin.out.nValue = AmountFromValue(find_value(prevOut, "amount"));
}
newcoin.nHeight = 1;
coins[out] = std::move(newcoin);
}
// if redeemScript and private keys were given, add redeemScript to the keystore so it can be signed
if (is_temp_keystore && (scriptPubKey.IsPayToScriptHash() || scriptPubKey.IsPayToWitnessScriptHash())) {
RPCTypeCheckObj(prevOut,
{
{"redeemScript", UniValueType(UniValue::VSTR)},
{"witnessScript", UniValueType(UniValue::VSTR)},
}, true);
UniValue rs = find_value(prevOut, "redeemScript");
if (!rs.isNull()) {
std::vector<unsigned char> rsData(ParseHexV(rs, "redeemScript"));
CScript redeemScript(rsData.begin(), rsData.end());
keystore->AddCScript(redeemScript);
// Automatically also add the P2WSH wrapped version of the script (to deal with P2SH-P2WSH).
// This is only for compatibility, it is encouraged to use the explicit witnessScript field instead.
keystore->AddCScript(GetScriptForWitness(redeemScript));
}
UniValue ws = find_value(prevOut, "witnessScript");
if (!ws.isNull()) {
std::vector<unsigned char> wsData(ParseHexV(ws, "witnessScript"));
CScript witnessScript(wsData.begin(), wsData.end());
keystore->AddCScript(witnessScript);
// Automatically also add the P2WSH wrapped version of the script (to deal with P2SH-P2WSH).
keystore->AddCScript(GetScriptForWitness(witnessScript));
}
}
}
}
int nHashType = ParseSighashString(hashType);
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(mtx);
// Sign what we can:
for (unsigned int i = 0; i < mtx.vin.size(); i++) {
CTxIn& txin = mtx.vin[i];
auto coin = coins.find(txin.prevout);
if (coin == coins.end() || coin->second.IsSpent()) {
TxInErrorToJSON(txin, vErrors, "Input not found or already spent");
continue;
}
const CScript& prevPubKey = coin->second.out.scriptPubKey;
const CAmount& amount = coin->second.out.nValue;
SignatureData sigdata = DataFromTransaction(mtx, i, coin->second.out);
// Only sign SIGHASH_SINGLE if there's a corresponding output:
if (!fHashSingle || (i < mtx.vout.size())) {
ProduceSignature(*keystore, MutableTransactionSignatureCreator(&mtx, i, amount, nHashType), prevPubKey, sigdata);
}
UpdateInput(txin, sigdata);
// amount must be specified for valid segwit signature
if (amount == MAX_MONEY && !txin.scriptWitness.IsNull()) {
throw JSONRPCError(RPC_TYPE_ERROR, strprintf("Missing amount for %s", coin->second.out.ToString()));
}
ScriptError serror = SCRIPT_ERR_OK;
if (!VerifyScript(txin.scriptSig, prevPubKey, &txin.scriptWitness, STANDARD_SCRIPT_VERIFY_FLAGS, TransactionSignatureChecker(&txConst, i, amount), &serror)) {
if (serror == SCRIPT_ERR_INVALID_STACK_OPERATION) {
// Unable to sign input and verification failed (possible attempt to partially sign).
TxInErrorToJSON(txin, vErrors, "Unable to sign input, invalid stack size (possibly missing key)");
} else {
TxInErrorToJSON(txin, vErrors, ScriptErrorString(serror));
}
}
}
bool fComplete = vErrors.empty();
UniValue result(UniValue::VOBJ);
result.pushKV("hex", EncodeHexTx(CTransaction(mtx)));
result.pushKV("complete", fComplete);
if (!vErrors.empty()) {
result.pushKV("errors", vErrors);
}
return result;
}

8
src/rpc/rawtransaction.h → src/rpc/rawtransaction_util.h
View file

@ -2,12 +2,12 @@
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_RPC_RAWTRANSACTION_H
#define BITCOIN_RPC_RAWTRANSACTION_H
#ifndef BITCOIN_RPC_RAWTRANSACTION_UTIL_H
#define BITCOIN_RPC_RAWTRANSACTION_UTIL_H
class CBasicKeyStore;
struct CMutableTransaction;
class UniValue;
struct CMutableTransaction;
namespace interfaces {
class Chain;
@ -19,4 +19,4 @@ UniValue SignTransaction(interfaces::Chain& chain, CMutableTransaction& mtx, con
/** Create a transaction from univalue parameters */
CMutableTransaction ConstructTransaction(const UniValue& inputs_in, const UniValue& outputs_in, const UniValue& locktime, const UniValue& rbf);
#endif // BITCOIN_RPC_RAWTRANSACTION_H
#endif // BITCOIN_RPC_RAWTRANSACTION_UTIL_H

2
src/wallet/rpcwallet.cpp
View file

@ -19,7 +19,7 @@
#include <policy/fees.h>
#include <policy/policy.h>
#include <policy/rbf.h>
#include <rpc/rawtransaction.h>
#include <rpc/rawtransaction_util.h>
#include <rpc/server.h>
#include <rpc/util.h>
#include <script/descriptor.h>