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-rw-r--r--src/node/README.md22
-rw-r--r--src/node/psbt.cpp134
-rw-r--r--src/node/psbt.h43
-rw-r--r--src/node/transaction.cpp27
-rw-r--r--src/node/transaction.h15
5 files changed, 201 insertions, 40 deletions
diff --git a/src/node/README.md b/src/node/README.md
new file mode 100644
index 000000000..e99a71753
--- /dev/null
+++ b/src/node/README.md
@@ -0,0 +1,22 @@
+# src/node/
+
+The [`src/node/`](./) directory contains code that needs to access node state
+(state in `CChain`, `CBlockIndex`, `CCoinsView`, `CTxMemPool`, and similar
+classes).
+
+Code in [`src/node/`](./) is meant to be segregated from code in
+[`src/wallet/`](../wallet/) and [`src/qt/`](../qt/), to ensure wallet and GUI
+code changes don't interfere with node operation, to allow wallet and GUI code
+to run in separate processes, and to perhaps eventually allow wallet and GUI
+code to be maintained in separate source repositories.
+
+As a rule of thumb, code in one of the [`src/node/`](./),
+[`src/wallet/`](../wallet/), or [`src/qt/`](../qt/) directories should avoid
+calling code in the other directories directly, and only invoke it indirectly
+through the more limited [`src/interfaces/`](../interfaces/) classes.
+
+The [`src/node/`](./) directory is a new directory introduced in
+[#14978](https://github.com/bitcoin/bitcoin/pull/14978) and at the moment is
+sparsely populated. Eventually more substantial files like
+[`src/validation.cpp`](../validation.cpp) and
+[`src/txmempool.cpp`](../txmempool.cpp) might be moved there.
diff --git a/src/node/psbt.cpp b/src/node/psbt.cpp
new file mode 100644
index 000000000..12559c5a5
--- /dev/null
+++ b/src/node/psbt.cpp
@@ -0,0 +1,134 @@
+// Copyright (c) 2009-2018 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 <coins.h>
+#include <consensus/tx_verify.h>
+#include <node/psbt.h>
+#include <policy/policy.h>
+#include <policy/settings.h>
+
+#include <numeric>
+
+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;
+}
diff --git a/src/node/psbt.h b/src/node/psbt.h
new file mode 100644
index 000000000..e04366a20
--- /dev/null
+++ b/src/node/psbt.h
@@ -0,0 +1,43 @@
+// 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.
+
+#ifndef BITCOIN_NODE_PSBT_H
+#define BITCOIN_NODE_PSBT_H
+
+#include <psbt.h>
+
+/**
+ * Holds an analysis of one input from a PSBT
+ */
+struct PSBTInputAnalysis {
+ bool has_utxo; //!< Whether we have UTXO information for this input
+ bool is_final; //!< Whether the input has all required information including signatures
+ PSBTRole next; //!< Which of the BIP 174 roles needs to handle this input next
+
+ std::vector<CKeyID> missing_pubkeys; //!< Pubkeys whose BIP32 derivation path is missing
+ std::vector<CKeyID> missing_sigs; //!< Pubkeys whose signatures are missing
+ uint160 missing_redeem_script; //!< Hash160 of redeem script, if missing
+ uint256 missing_witness_script; //!< SHA256 of witness script, if missing
+};
+
+/**
+ * Holds the results of AnalyzePSBT (miscellaneous information about a PSBT)
+ */
+struct PSBTAnalysis {
+ Optional<size_t> estimated_vsize; //!< Estimated weight of the transaction
+ Optional<CFeeRate> estimated_feerate; //!< Estimated feerate (fee / weight) of the transaction
+ Optional<CAmount> fee; //!< Amount of fee being paid by the transaction
+ std::vector<PSBTInputAnalysis> inputs; //!< More information about the individual inputs of the transaction
+ PSBTRole next; //!< Which of the BIP 174 roles needs to handle the transaction next
+};
+
+/**
+ * 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);
+
+#endif // BITCOIN_NODE_PSBT_H
diff --git a/src/node/transaction.cpp b/src/node/transaction.cpp
index 7b9b4310e..5ffb15ed3 100644
--- a/src/node/transaction.cpp
+++ b/src/node/transaction.cpp
@@ -6,38 +6,13 @@
#include <consensus/validation.h>
#include <net.h>
#include <txmempool.h>
+#include <util/validation.h>
#include <validation.h>
#include <validationinterface.h>
#include <node/transaction.h>
#include <future>
-std::string TransactionErrorString(const TransactionError err)
-{
- switch (err) {
- case TransactionError::OK:
- return "No error";
- case TransactionError::MISSING_INPUTS:
- return "Missing inputs";
- case TransactionError::ALREADY_IN_CHAIN:
- return "Transaction already in block chain";
- case TransactionError::P2P_DISABLED:
- return "Peer-to-peer functionality missing or disabled";
- case TransactionError::MEMPOOL_REJECTED:
- return "Transaction rejected by AcceptToMemoryPool";
- case TransactionError::MEMPOOL_ERROR:
- return "AcceptToMemoryPool failed";
- case TransactionError::INVALID_PSBT:
- return "PSBT is not sane";
- case TransactionError::PSBT_MISMATCH:
- return "PSBTs not compatible (different transactions)";
- case TransactionError::SIGHASH_MISMATCH:
- return "Specified sighash value does not match existing value";
- // no default case, so the compiler can warn about missing cases
- }
- assert(false);
-}
-
TransactionError BroadcastTransaction(const CTransactionRef tx, uint256& hashTx, std::string& err_string, const CAmount& highfee)
{
std::promise<void> promise;
diff --git a/src/node/transaction.h b/src/node/transaction.h
index 3457ececa..51033f94e 100644
--- a/src/node/transaction.h
+++ b/src/node/transaction.h
@@ -8,20 +8,7 @@
#include <attributes.h>
#include <primitives/transaction.h>
#include <uint256.h>
-
-enum class TransactionError {
- OK, //!< No error
- MISSING_INPUTS,
- ALREADY_IN_CHAIN,
- P2P_DISABLED,
- MEMPOOL_REJECTED,
- MEMPOOL_ERROR,
- INVALID_PSBT,
- PSBT_MISMATCH,
- SIGHASH_MISMATCH,
-};
-
-std::string TransactionErrorString(const TransactionError error);
+#include <util/error.h>
/**
* Broadcast a transaction
generated by cgit v1.2.3 (git 2.25.1) at 2026-04-29 01:13:14 +0000