Bitcoin Core  22.99.0
P2P Digital Currency
psbt.cpp
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1 // Copyright (c) 2019-2020 The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 
6 #include <test/fuzz/fuzz.h>
7 
8 #include <node/psbt.h>
9 #include <psbt.h>
10 #include <pubkey.h>
11 #include <script/script.h>
12 #include <streams.h>
13 #include <util/check.h>
14 #include <version.h>
15 
16 #include <cstdint>
17 #include <optional>
18 #include <string>
19 #include <vector>
20 
22 {
23  static const ECCVerifyHandle verify_handle;
24 }
25 
27 {
28  FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
30  std::string error;
31  if (!DecodeRawPSBT(psbt_mut, fuzzed_data_provider.ConsumeRandomLengthString(), error)) {
32  return;
33  }
34  const PartiallySignedTransaction psbt = psbt_mut;
35 
36  const PSBTAnalysis analysis = AnalyzePSBT(psbt);
37  (void)PSBTRoleName(analysis.next);
38  for (const PSBTInputAnalysis& input_analysis : analysis.inputs) {
39  (void)PSBTRoleName(input_analysis.next);
40  }
41 
42  (void)psbt.IsNull();
43 
44  std::optional<CMutableTransaction> tx = psbt.tx;
45  if (tx) {
46  const CMutableTransaction& mtx = *tx;
47  const PartiallySignedTransaction psbt_from_tx{mtx};
48  }
49 
50  for (const PSBTInput& input : psbt.inputs) {
51  (void)PSBTInputSigned(input);
52  (void)input.IsNull();
53  }
54  (void)CountPSBTUnsignedInputs(psbt);
55 
56  for (const PSBTOutput& output : psbt.outputs) {
57  (void)output.IsNull();
58  }
59 
60  for (size_t i = 0; i < psbt.tx->vin.size(); ++i) {
61  CTxOut tx_out;
62  if (psbt.GetInputUTXO(tx_out, i)) {
63  (void)tx_out.IsNull();
64  (void)tx_out.ToString();
65  }
66  }
67 
68  psbt_mut = psbt;
69  (void)FinalizePSBT(psbt_mut);
70 
71  psbt_mut = psbt;
72  CMutableTransaction result;
73  if (FinalizeAndExtractPSBT(psbt_mut, result)) {
74  const PartiallySignedTransaction psbt_from_tx{result};
75  }
76 
77  PartiallySignedTransaction psbt_merge;
78  if (!DecodeRawPSBT(psbt_merge, fuzzed_data_provider.ConsumeRandomLengthString(), error)) {
79  psbt_merge = psbt;
80  }
81  psbt_mut = psbt;
82  (void)psbt_mut.Merge(psbt_merge);
83  psbt_mut = psbt;
84  (void)CombinePSBTs(psbt_mut, {psbt_mut, psbt_merge});
85  psbt_mut = psbt;
86  for (unsigned int i = 0; i < psbt_merge.tx->vin.size(); ++i) {
87  (void)psbt_mut.AddInput(psbt_merge.tx->vin[i], psbt_merge.inputs[i]);
88  }
89  for (unsigned int i = 0; i < psbt_merge.tx->vout.size(); ++i) {
90  Assert(psbt_mut.AddOutput(psbt_merge.tx->vout[i], psbt_merge.outputs[i]));
91  }
92  psbt_mut.unknown.insert(psbt_merge.unknown.begin(), psbt_merge.unknown.end());
93 }
CombinePSBTs
TransactionError CombinePSBTs(PartiallySignedTransaction &out, const std::vector< PartiallySignedTransaction > &psbtxs)
Combines PSBTs with the same underlying transaction, resulting in a single PSBT with all partial sign...
Definition: psbt.cpp:349
FinalizePSBT
bool FinalizePSBT(PartiallySignedTransaction &psbtx)
Finalizes a PSBT if possible, combining partial signatures.
Definition: psbt.cpp:318
check.h
psbt.h
streams.h
PartiallySignedTransaction::IsNull
bool IsNull() const
Definition: psbt.cpp:17
PSBTAnalysis
Holds the results of AnalyzePSBT (miscellaneous information about a PSBT)
Definition: psbt.h:29
PartiallySignedTransaction::inputs
std::vector< PSBTInput > inputs
Definition: psbt.h:394
PartiallySignedTransaction::AddInput
bool AddInput(const CTxIn &txin, PSBTInput &psbtin)
Definition: psbt.cpp:40
FinalizeAndExtractPSBT
bool FinalizeAndExtractPSBT(PartiallySignedTransaction &psbtx, CMutableTransaction &result)
Finalizes a PSBT if possible, and extracts it to a CMutableTransaction if it could be finalized.
Definition: psbt.cpp:333
pubkey.h
PSBTAnalysis::inputs
std::vector< PSBTInputAnalysis > inputs
More information about the individual inputs of the transaction.
Definition: psbt.h:33
version.h
Assert
#define Assert(val)
Identity function.
Definition: check.h:57
PSBTInputAnalysis
Holds an analysis of one input from a PSBT.
Definition: psbt.h:15
PSBTAnalysis::next
PSBTRole next
Which of the BIP 174 roles needs to handle the transaction next.
Definition: psbt.h:34
CTxOut::IsNull
bool IsNull() const
Definition: transaction.h:149
AnalyzePSBT
PSBTAnalysis AnalyzePSBT(PartiallySignedTransaction psbtx)
Provides helpful miscellaneous information about where a PSBT is in the signing workflow.
Definition: psbt.cpp:15
PartiallySignedTransaction::Merge
bool Merge(const PartiallySignedTransaction &psbt)
Merge psbt into this.
Definition: psbt.cpp:22
CTxOut
An output of a transaction.
Definition: transaction.h:128
PartiallySignedTransaction::GetInputUTXO
bool GetInputUTXO(CTxOut &utxo, int input_index) const
Finds the UTXO for a given input index.
Definition: psbt.cpp:60
PSBTOutput::IsNull
bool IsNull() const
Definition: psbt.cpp:184
FuzzedDataProvider.h
PartiallySignedTransaction::tx
std::optional< CMutableTransaction > tx
Definition: psbt.h:393
PSBTOutput
A structure for PSBTs which contains per output information.
Definition: psbt.h:276
PartiallySignedTransaction::AddOutput
bool AddOutput(const CTxOut &txout, const PSBTOutput &psbtout)
Definition: psbt.cpp:53
script.h
PSBTRoleName
std::string PSBTRoleName(PSBTRole role)
Definition: psbt.cpp:362
DecodeRawPSBT
bool DecodeRawPSBT(PartiallySignedTransaction &psbt, const std::string &tx_data, std::string &error)
Decode a raw (binary blob) PSBT into a PartiallySignedTransaction.
Definition: psbt.cpp:385
CountPSBTUnsignedInputs
size_t CountPSBTUnsignedInputs(const PartiallySignedTransaction &psbt)
Counts the unsigned inputs of a PSBT.
Definition: psbt.cpp:202
PSBTInput
A structure for PSBTs which contain per-input information.
Definition: psbt.h:49
ECCVerifyHandle
Users of this module must hold an ECCVerifyHandle.
Definition: pubkey.h:315
fuzz.h
PSBTInputAnalysis::next
PSBTRole next
Which of the BIP 174 roles needs to handle this input next.
Definition: psbt.h:18
PartiallySignedTransaction
A version of CTransaction with the PSBT format.
Definition: psbt.h:391
FuzzedDataProvider
Definition: FuzzedDataProvider.h:31
CTxOut::ToString
std::string ToString() const
Definition: transaction.cpp:54
PartiallySignedTransaction::outputs
std::vector< PSBTOutput > outputs
Definition: psbt.h:395
PSBTInputSigned
bool PSBTInputSigned(const PSBTInput &input)
Checks whether a PSBTInput is already signed.
Definition: psbt.cpp:197
error
bool error(const char *fmt, const Args &... args)
Definition: system.h:49
PSBTInput::IsNull
bool IsNull() const
Definition: psbt.cpp:80
CMutableTransaction
A mutable version of CTransaction.
Definition: transaction.h:344
initialize_psbt
void initialize_psbt()
Definition: psbt.cpp:21
FUZZ_TARGET_INIT
FUZZ_TARGET_INIT(psbt, initialize_psbt)
Definition: psbt.cpp:26
PartiallySignedTransaction::unknown
std::map< std::vector< unsigned char >, std::vector< unsigned char > > unknown
Definition: psbt.h:396