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-rw-r--r--src/psbt.cpp139
-rw-r--r--src/psbt.h40
-rw-r--r--src/rpc/rawtransaction.cpp164
3 files changed, 213 insertions, 130 deletions
diff --git a/src/psbt.cpp b/src/psbt.cpp
index 734e7897ec..184129e330 100644
--- a/src/psbt.cpp
+++ b/src/psbt.cpp
@@ -2,9 +2,14 @@
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+#include <coins.h>
+#include <consensus/tx_verify.h>
+#include <policy/policy.h>
#include <psbt.h>
#include <util/strencodings.h>
+#include <numeric>
+
PartiallySignedTransaction::PartiallySignedTransaction(const CMutableTransaction& tx) : tx(tx)
{
inputs.resize(tx.vin.size());
@@ -205,7 +210,7 @@ void PSBTOutput::Merge(const PSBTOutput& output)
if (redeem_script.empty() && !output.redeem_script.empty()) redeem_script = output.redeem_script;
if (witness_script.empty() && !output.witness_script.empty()) witness_script = output.witness_script;
}
-bool PSBTInputSigned(PSBTInput& input)
+bool PSBTInputSigned(const PSBTInput& input)
{
return !input.final_script_sig.empty() || !input.final_script_witness.IsNull();
}
@@ -326,6 +331,138 @@ TransactionError CombinePSBTs(PartiallySignedTransaction& out, const std::vector
return TransactionError::OK;
}
+std::string PSBTRoleName(PSBTRole role) {
+ switch (role) {
+ case PSBTRole::UPDATER: return "updater";
+ case PSBTRole::SIGNER: return "signer";
+ case PSBTRole::FINALIZER: return "finalizer";
+ case PSBTRole::EXTRACTOR: return "extractor";
+ }
+}
+
+PSBTAnalysis AnalyzePSBT(PartiallySignedTransaction psbtx)
+{
+ // Go through each input and build status
+ PSBTAnalysis result;
+
+ bool calc_fee = true;
+ bool all_final = true;
+ bool only_missing_sigs = true;
+ bool only_missing_final = false;
+ CAmount in_amt = 0;
+
+ result.inputs.resize(psbtx.tx->vin.size());
+
+ for (unsigned int i = 0; i < psbtx.tx->vin.size(); ++i) {
+ PSBTInput& input = psbtx.inputs[i];
+ PSBTInputAnalysis& input_analysis = result.inputs[i];
+
+ // Check for a UTXO
+ CTxOut utxo;
+ if (psbtx.GetInputUTXO(utxo, i)) {
+ in_amt += utxo.nValue;
+ input_analysis.has_utxo = true;
+ } else {
+ input_analysis.has_utxo = false;
+ input_analysis.is_final = false;
+ input_analysis.next = PSBTRole::UPDATER;
+ calc_fee = false;
+ }
+
+ // Check if it is final
+ if (!utxo.IsNull() && !PSBTInputSigned(input)) {
+ input_analysis.is_final = false;
+ all_final = false;
+
+ // Figure out what is missing
+ SignatureData outdata;
+ bool complete = SignPSBTInput(DUMMY_SIGNING_PROVIDER, psbtx, i, 1, &outdata);
+
+ // Things are missing
+ if (!complete) {
+ input_analysis.missing_pubkeys = outdata.missing_pubkeys;
+ input_analysis.missing_redeem_script = outdata.missing_redeem_script;
+ input_analysis.missing_witness_script = outdata.missing_witness_script;
+ input_analysis.missing_sigs = outdata.missing_sigs;
+
+ // If we are only missing signatures and nothing else, then next is signer
+ if (outdata.missing_pubkeys.empty() && outdata.missing_redeem_script.IsNull() && outdata.missing_witness_script.IsNull() && !outdata.missing_sigs.empty()) {
+ input_analysis.next = PSBTRole::SIGNER;
+ } else {
+ only_missing_sigs = false;
+ input_analysis.next = PSBTRole::UPDATER;
+ }
+ } else {
+ only_missing_final = true;
+ input_analysis.next = PSBTRole::FINALIZER;
+ }
+ } else if (!utxo.IsNull()){
+ input_analysis.is_final = true;
+ }
+ }
+
+ if (all_final) {
+ only_missing_sigs = false;
+ result.next = PSBTRole::EXTRACTOR;
+ }
+ if (calc_fee) {
+ // Get the output amount
+ CAmount out_amt = std::accumulate(psbtx.tx->vout.begin(), psbtx.tx->vout.end(), CAmount(0),
+ [](CAmount a, const CTxOut& b) {
+ return a += b.nValue;
+ }
+ );
+
+ // Get the fee
+ CAmount fee = in_amt - out_amt;
+ result.fee = fee;
+
+ // Estimate the size
+ CMutableTransaction mtx(*psbtx.tx);
+ CCoinsView view_dummy;
+ CCoinsViewCache view(&view_dummy);
+ bool success = true;
+
+ for (unsigned int i = 0; i < psbtx.tx->vin.size(); ++i) {
+ PSBTInput& input = psbtx.inputs[i];
+ Coin newcoin;
+
+ if (!SignPSBTInput(DUMMY_SIGNING_PROVIDER, psbtx, i, 1, nullptr, true) || !psbtx.GetInputUTXO(newcoin.out, i)) {
+ success = false;
+ break;
+ } else {
+ mtx.vin[i].scriptSig = input.final_script_sig;
+ mtx.vin[i].scriptWitness = input.final_script_witness;
+ newcoin.nHeight = 1;
+ view.AddCoin(psbtx.tx->vin[i].prevout, std::move(newcoin), true);
+ }
+ }
+
+ if (success) {
+ CTransaction ctx = CTransaction(mtx);
+ size_t size = GetVirtualTransactionSize(ctx, GetTransactionSigOpCost(ctx, view, STANDARD_SCRIPT_VERIFY_FLAGS));
+ result.estimated_vsize = size;
+ // Estimate fee rate
+ CFeeRate feerate(fee, size);
+ result.estimated_feerate = feerate;
+ }
+
+ if (only_missing_sigs) {
+ result.next = PSBTRole::SIGNER;
+ } else if (only_missing_final) {
+ result.next = PSBTRole::FINALIZER;
+ } else if (all_final) {
+ result.next = PSBTRole::EXTRACTOR;
+ } else {
+ result.next = PSBTRole::UPDATER;
+ }
+ } else {
+ result.next = PSBTRole::UPDATER;
+ }
+
+ return result;
+}
+
bool DecodeBase64PSBT(PartiallySignedTransaction& psbt, const std::string& base64_tx, std::string& error)
{
bool invalid;
diff --git a/src/psbt.h b/src/psbt.h
index d89fd68c21..0f17a71a44 100644
--- a/src/psbt.h
+++ b/src/psbt.h
@@ -7,6 +7,8 @@
#include <attributes.h>
#include <node/transaction.h>
+#include <optional.h>
+#include <policy/feerate.h>
#include <primitives/transaction.h>
#include <pubkey.h>
#include <script/sign.h>
@@ -548,8 +550,36 @@ struct PartiallySignedTransaction
}
};
+enum class PSBTRole {
+ UPDATER,
+ SIGNER,
+ FINALIZER,
+ EXTRACTOR
+};
+
+struct PSBTInputAnalysis {
+ bool has_utxo;
+ bool is_final;
+ PSBTRole next;
+
+ std::vector<CKeyID> missing_pubkeys;
+ std::vector<CKeyID> missing_sigs;
+ uint160 missing_redeem_script;
+ uint256 missing_witness_script;
+};
+
+struct PSBTAnalysis {
+ Optional<size_t> estimated_vsize;
+ Optional<CFeeRate> estimated_feerate;
+ Optional<CAmount> fee;
+ std::vector<PSBTInputAnalysis> inputs;
+ PSBTRole next;
+};
+
+std::string PSBTRoleName(PSBTRole role);
+
/** Checks whether a PSBTInput is already signed. */
-bool PSBTInputSigned(PSBTInput& input);
+bool PSBTInputSigned(const PSBTInput& input);
/** Signs a PSBTInput, verifying that all provided data matches what is being signed. */
bool SignPSBTInput(const SigningProvider& provider, PartiallySignedTransaction& psbt, int index, int sighash = SIGHASH_ALL, SignatureData* out_sigdata = nullptr, bool use_dummy = false);
@@ -580,6 +610,14 @@ bool FinalizeAndExtractPSBT(PartiallySignedTransaction& psbtx, CMutableTransacti
*/
NODISCARD TransactionError CombinePSBTs(PartiallySignedTransaction& out, const std::vector<PartiallySignedTransaction>& psbtxs);
+/**
+ * Provides helpful miscellaneous information about where a PSBT is in the signing workflow.
+ *
+ * @param[in] psbtx the PSBT to analyze
+ * @return A PSBTAnalysis with information about the provided PSBT.
+ */
+PSBTAnalysis AnalyzePSBT(PartiallySignedTransaction psbtx);
+
//! Decode a base64ed PSBT into a PartiallySignedTransaction
NODISCARD bool DecodeBase64PSBT(PartiallySignedTransaction& decoded_psbt, const std::string& base64_psbt, std::string& error);
//! Decode a raw (binary blob) PSBT into a PartiallySignedTransaction
diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp
index 71acdbfb99..7dd8abc193 100644
--- a/src/rpc/rawtransaction.cpp
+++ b/src/rpc/rawtransaction.cpp
@@ -1895,148 +1895,56 @@ UniValue analyzepsbt(const JSONRPCRequest& request)
throw JSONRPCError(RPC_DESERIALIZATION_ERROR, strprintf("TX decode failed %s", error));
}
- // Go through each input and build status
+ PSBTAnalysis psbta = AnalyzePSBT(psbtx);
+
UniValue result(UniValue::VOBJ);
UniValue inputs_result(UniValue::VARR);
- bool calc_fee = true;
- bool all_final = true;
- bool only_missing_sigs = true;
- bool only_missing_final = false;
- CAmount in_amt = 0;
- for (unsigned int i = 0; i < psbtx.tx->vin.size(); ++i) {
- PSBTInput& input = psbtx.inputs[i];
+ for (const auto& input : psbta.inputs) {
UniValue input_univ(UniValue::VOBJ);
UniValue missing(UniValue::VOBJ);
- // Check for a UTXO
- CTxOut utxo;
- if (psbtx.GetInputUTXO(utxo, i)) {
- in_amt += utxo.nValue;
- input_univ.pushKV("has_utxo", true);
- } else {
- input_univ.pushKV("has_utxo", false);
- input_univ.pushKV("is_final", false);
- input_univ.pushKV("next", "updater");
- calc_fee = false;
- }
+ input_univ.pushKV("has_utxo", input.has_utxo);
+ input_univ.pushKV("is_final", input.is_final);
+ input_univ.pushKV("next", PSBTRoleName(input.next));
- // Check if it is final
- if (!utxo.IsNull() && !PSBTInputSigned(input)) {
- input_univ.pushKV("is_final", false);
- all_final = false;
-
- // Figure out what is missing
- SignatureData outdata;
- bool complete = SignPSBTInput(DUMMY_SIGNING_PROVIDER, psbtx, i, 1, &outdata);
-
- // Things are missing
- if (!complete) {
- if (!outdata.missing_pubkeys.empty()) {
- // Missing pubkeys
- UniValue missing_pubkeys_univ(UniValue::VARR);
- for (const CKeyID& pubkey : outdata.missing_pubkeys) {
- missing_pubkeys_univ.push_back(HexStr(pubkey));
- }
- missing.pushKV("pubkeys", missing_pubkeys_univ);
- }
- if (!outdata.missing_redeem_script.IsNull()) {
- // Missing redeemScript
- missing.pushKV("redeemscript", HexStr(outdata.missing_redeem_script));
- }
- if (!outdata.missing_witness_script.IsNull()) {
- // Missing witnessScript
- missing.pushKV("witnessscript", HexStr(outdata.missing_witness_script));
- }
- if (!outdata.missing_sigs.empty()) {
- // Missing sigs
- UniValue missing_sigs_univ(UniValue::VARR);
- for (const CKeyID& pubkey : outdata.missing_sigs) {
- missing_sigs_univ.push_back(HexStr(pubkey));
- }
- missing.pushKV("signatures", missing_sigs_univ);
- }
- input_univ.pushKV("missing", missing);
-
- // If we are only missing signatures and nothing else, then next is signer
- if (outdata.missing_pubkeys.empty() && outdata.missing_redeem_script.IsNull() && outdata.missing_witness_script.IsNull() && !outdata.missing_sigs.empty()) {
- input_univ.pushKV("next", "signer");
- } else {
- only_missing_sigs = false;
- input_univ.pushKV("next", "updater");
- }
- } else {
- only_missing_final = true;
- input_univ.pushKV("next", "finalizer");
+ if (!input.missing_pubkeys.empty()) {
+ UniValue missing_pubkeys_univ(UniValue::VARR);
+ for (const CKeyID& pubkey : input.missing_pubkeys) {
+ missing_pubkeys_univ.push_back(HexStr(pubkey));
}
- } else if (!utxo.IsNull()){
- input_univ.pushKV("is_final", true);
+ missing.pushKV("pubkeys", missing_pubkeys_univ);
+ }
+ if (!input.missing_redeem_script.IsNull()) {
+ missing.pushKV("redeemscript", HexStr(input.missing_redeem_script));
+ }
+ if (!input.missing_witness_script.IsNull()) {
+ missing.pushKV("witnessscript", HexStr(input.missing_witness_script));
+ }
+ if (!input.missing_sigs.empty()) {
+ UniValue missing_sigs_univ(UniValue::VARR);
+ for (const CKeyID& pubkey : input.missing_sigs) {
+ missing_sigs_univ.push_back(HexStr(pubkey));
+ }
+ missing.pushKV("signatures", missing_sigs_univ);
+ }
+ if (!missing.getKeys().empty()) {
+ input_univ.pushKV("missing", missing);
}
inputs_result.push_back(input_univ);
}
result.pushKV("inputs", inputs_result);
- if (all_final) {
- only_missing_sigs = false;
- result.pushKV("next", "extractor");
+ if (psbta.estimated_vsize != nullopt) {
+ result.pushKV("estimated_vsize", (int)*psbta.estimated_vsize);
}
- if (calc_fee) {
- // Get the output amount
- CAmount out_amt = std::accumulate(psbtx.tx->vout.begin(), psbtx.tx->vout.end(), CAmount(0),
- [](CAmount a, const CTxOut& b) {
- return a += b.nValue;
- }
- );
-
- // Get the fee
- CAmount fee = in_amt - out_amt;
-
- // Estimate the size
- CMutableTransaction mtx(*psbtx.tx);
- CCoinsView view_dummy;
- CCoinsViewCache view(&view_dummy);
- bool success = true;
-
- for (unsigned int i = 0; i < psbtx.tx->vin.size(); ++i) {
- PSBTInput& input = psbtx.inputs[i];
- if (SignPSBTInput(DUMMY_SIGNING_PROVIDER, psbtx, i, 1, nullptr, true)) {
- mtx.vin[i].scriptSig = input.final_script_sig;
- mtx.vin[i].scriptWitness = input.final_script_witness;
-
- Coin newcoin;
- if (!psbtx.GetInputUTXO(newcoin.out, i)) {
- success = false;
- break;
- }
- newcoin.nHeight = 1;
- view.AddCoin(psbtx.tx->vin[i].prevout, std::move(newcoin), true);
- } else {
- success = false;
- break;
- }
- }
-
- if (success) {
- CTransaction ctx = CTransaction(mtx);
- size_t size = GetVirtualTransactionSize(ctx, GetTransactionSigOpCost(ctx, view, STANDARD_SCRIPT_VERIFY_FLAGS));
- result.pushKV("estimated_vsize", (int)size);
- // Estimate fee rate
- CFeeRate feerate(fee, size);
- result.pushKV("estimated_feerate", ValueFromAmount(feerate.GetFeePerK()));
- }
- result.pushKV("fee", ValueFromAmount(fee));
-
- if (only_missing_sigs) {
- result.pushKV("next", "signer");
- } else if (only_missing_final) {
- result.pushKV("next", "finalizer");
- } else if (all_final) {
- result.pushKV("next", "extractor");
- } else {
- result.pushKV("next", "updater");
- }
- } else {
- result.pushKV("next", "updater");
+ if (psbta.estimated_feerate != nullopt) {
+ result.pushKV("estimated_feerate", ValueFromAmount(psbta.estimated_feerate->GetFeePerK()));
}
+ if (psbta.fee != nullopt) {
+ result.pushKV("fee", ValueFromAmount(*psbta.fee));
+ }
+ result.pushKV("next", PSBTRoleName(psbta.next));
+
return result;
}
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-14 16:57:55 +0000