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Stable release v32.1bitcoin/bitcoin · f0de87f04062 ↗3,020 source files · 47.5 MB stored on the server440 file guides

Release published 2026-10-28 · Snapshot fetched 2026-11-01. Latest stable release at fetch time; development branches and Git history are excluded. Only the selected code window and visible folders load here.

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1// Copyright (c) 2019-present 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
5#include <node/psbt.h>
6#include <psbt.h>
7#include <pubkey.h>
8#include <script/script.h>
9#include <streams.h>
10#include <test/fuzz/FuzzedDataProvider.h>
11#include <test/fuzz/fuzz.h>
12#include <test/util/random.h>
13#include <util/check.h>
14
15#include <cstdint>
16#include <optional>
17#include <string>
18#include <vector>
19
20using node::AnalyzePSBT;
21using node::PSBTAnalysis;
22using node::PSBTInputAnalysis;
23
24FUZZ_TARGET(psbt)
25{
26    SeedRandomStateForTest(SeedRand::ZEROS);
27    FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
28    auto str = fuzzed_data_provider.ConsumeRandomLengthString();
29    util::Result<PartiallySignedTransaction> psbt_res = DecodeRawPSBT(MakeByteSpan(str));
30    if (!psbt_res) {
31        return;
32    }
33    PartiallySignedTransaction psbt_mut = *psbt_res;
34    const PartiallySignedTransaction psbt = psbt_mut;
35
36    // We are on purpose not forward compatible, and version 1 is disabled.
37    const auto psbt_version{psbt.GetVersion()};
38    Assert(psbt_version == 0 || psbt_version == 2);
39
40    // A PSBT must roundtrip.
41    std::vector<uint8_t> psbt_ser;
42    VectorWriter{psbt_ser, 0, psbt};
43    SpanReader reader{psbt_ser};
44    PartiallySignedTransaction psbt_roundtrip(deserialize, reader);
45
46    // And be stable across roundtrips.
47    std::vector<uint8_t> roundtrip_ser;
48    VectorWriter{roundtrip_ser, 0, psbt_roundtrip};
49    Assert(psbt_ser == roundtrip_ser);
50
51    const PSBTAnalysis analysis = AnalyzePSBT(psbt);
52    (void)PSBTRoleName(analysis.next);
53    for (const PSBTInputAnalysis& input_analysis : analysis.inputs) {
54        (void)PSBTRoleName(input_analysis.next);
55    }
56
57    (void)psbt.GetUnsignedTx();
58
59    for (const PSBTInput& input : psbt.inputs) {
60        (void)PSBTInputSigned(input);
61        PSBTInput input_mod = input;
62        CTxOut tx_out;
63        if (input.GetUTXO(tx_out)) {
64            (void)tx_out.IsNull();
65            (void)tx_out.ToString();
66        }
67        // A PSBT input must roundtrip to signature data.
68        PSBTInput input_fill{psbt_version, input_mod.prev_txid, input_mod.prev_out, input_mod.sequence};
69        SignatureData sig_data;
70        input_mod.FillSignatureData(sig_data);
71        input_fill.FromSignatureData(sig_data);
72
73        // Only final_script_sig and final_script_witness are filled when sigdata is complete
74        if (sig_data.complete) {
75            Assert(input_mod.final_script_sig == input_fill.final_script_sig);
76            Assert(input_mod.final_script_witness == input_fill.final_script_witness);
77        } else {
78            // UTXOs don't go into SignatureData
79            input_mod.non_witness_utxo.reset();
80            input_mod.witness_utxo.SetNull();
81            // Sighash type doesn't go into SignatureData
82            input_mod.sighash_type.reset();
83            // Timelocks don't go into SignatureData
84            input_mod.time_locktime.reset();
85            input_mod.height_locktime.reset();
86            // Proprietary fields are not included in SignatureData
87            input_mod.m_proprietary.clear();
88            // Unknown fields are not included in SignatureData
89            input_mod.unknown.clear();
90
91            Assert(input_mod == input_fill);
92        }
93    }
94    (void)CountPSBTUnsignedInputs(psbt);
95
96    for (const PSBTOutput& output : psbt.outputs) {
97        PSBTOutput output_mod = output;
98        // A PSBT output must roundtrip to signature data.
99        PSBTOutput output_fill{psbt_version, output_mod.amount, output_mod.script};
100        SignatureData sig_data;
101        output_mod.FillSignatureData(sig_data);
102        output_fill.FromSignatureData(sig_data);
103
104        // FillSignatureData will not fill tap tree or internal key if the tree is empty or
105        // the key is not fully valid. These need to be cleared before checking for equivalence
106        if (output_mod.m_tap_tree.empty() || !output_mod.m_tap_internal_key.IsFullyValid()) {
107            output_mod.m_tap_tree.clear();
108            std::fill(output_mod.m_tap_internal_key.begin(), output_mod.m_tap_internal_key.end(), 0);
109        }
110        // Sort m_tap_tree to ensure the vectors match
111        std::sort(output_mod.m_tap_tree.begin(), output_mod.m_tap_tree.end());
112        std::sort(output_fill.m_tap_tree.begin(), output_fill.m_tap_tree.end());
113        // Proprietary fields are not included in SignatureData
114        output_mod.m_proprietary.clear();
115        // Unknown fields are not included in SignatureData
116        output_mod.unknown.clear();
117
118        Assert(output_mod.m_tap_internal_key == output_fill.m_tap_internal_key);
119        Assert(output_mod == output_fill);
120    }
121
122    psbt_mut = psbt;
123    (void)FinalizePSBT(psbt_mut);
124
125    psbt_mut = psbt;
126    CMutableTransaction result;
127    if (FinalizeAndExtractPSBT(psbt_mut, result)) {
128        const PartiallySignedTransaction psbt_from_tx{result};
129    }
130
131    PartiallySignedTransaction psbt_merge = psbt;
132    str = fuzzed_data_provider.ConsumeRandomLengthString();
133    util::Result<PartiallySignedTransaction> psbt_merge_res = DecodeRawPSBT(MakeByteSpan(str));
134    if (psbt_merge_res) {
135        psbt_merge = *psbt_merge_res;
136    }
137    psbt_mut = psbt;
138    (void)psbt_mut.Merge(psbt_merge);
139    psbt_mut = psbt;
140    std::optional<PartiallySignedTransaction> comb_res = CombinePSBTs({psbt_mut, psbt_merge});
141    if (comb_res) {
142        psbt_mut = *comb_res;
143    }
144    for (const auto& psbt_in : psbt_merge.inputs) {
145        (void)psbt_mut.AddInput(psbt_in);
146    }
147    for (const auto& psbt_out : psbt_merge.outputs) {
148        (void)psbt_mut.AddOutput(psbt_out);
149    }
150    psbt_mut.unknown.insert(psbt_merge.unknown.begin(), psbt_merge.unknown.end());
151
152    RemoveUnnecessaryTransactions(psbt_mut);
153}
154

src/wallet/receive.cpp

src/wallet/coinselection.cpp

src/consensus/validation.h

src/primitives/transaction.cpp

src/script/descriptor.cpp

src/bitcoin-cli.cpp

src/rpc/blockchain.cpp

src/rpc/rawtransaction.cpp

src/init.cpp

src/crypto/sha256.cpp

src/consensus/merkle.h

src/consensus/tx_check.h

src/consensus/tx_verify.h

src/policy/feerate.h

src/policy/feerate.cpp

src/primitives/transaction_identifier.h

src/chainparamsbase.h

src/chainparamsbase.cpp

src/util/moneystr.cpp

src/crypto/ripemd160.h

src/crypto/sha1.h

src/crypto/sha512.h

src/crypto/hmac_sha256.h

src/crypto/hmac_sha512.h

src/crypto/hmac_sha256.cpp

src/crypto/hmac_sha512.cpp

src/crypto/hkdf_sha256_32.h

src/crypto/hkdf_sha256_32.cpp

src/support/cleanse.h

src/support/cleanse.cpp

src/crypto/siphash.cpp

src/crypto/muhash.h

src/crypto/chacha20.h

src/crypto/poly1305.h

src/crypto/chacha20poly1305.h

src/crypto/chacha20poly1305.cpp

src/util/chaintype.cpp

src/util/obfuscation.h

src/util/byte_units.h

src/util/overflow.h

src/blockencodings.cpp

src/net_permissions.cpp

src/policy/packages.cpp

src/policy/rbf.cpp

src/policy/truc_policy.cpp

src/policy/ephemeral_policy.cpp

src/policy/settings.cpp

src/policy/policy.cpp

src/node/transaction.cpp

src/node/coin.cpp

src/rpc/client.cpp

src/rpc/external_signer.cpp

src/rpc/request.cpp

src/rpc/server_util.cpp

src/rpc/fees.cpp

src/rpc/output_script.cpp

src/rpc/rawtransaction_util.cpp

src/rpc/rawtransaction_util.h

src/rpc/register.h

src/rpc/request.h

src/rpc/server_util.h

src/rpc/protocol.h

src/rpc/server.h

src/rpc/signmessage.cpp

src/rpc/txoutproof.cpp

src/rpc/util.cpp

src/rpc/util.h

src/wallet/rpc/addresses.cpp

src/wallet/rpc/backup.cpp

src/wallet/rpc/coins.cpp

src/wallet/rpc/encrypt.cpp

src/wallet/rpc/signmessage.cpp

src/wallet/rpc/util.cpp

src/wallet/rpc/util.h

src/wallet/coincontrol.cpp

src/wallet/coincontrol.h

src/wallet/context.cpp

src/wallet/context.h

src/wallet/crypter.cpp

src/wallet/crypter.h

src/wallet/db.cpp

src/wallet/export.cpp

src/wallet/external_signer_scriptpubkeyman.cpp

src/wallet/rpc/spend.cpp

src/wallet/rpc/transactions.cpp

src/wallet/rpc/wallet.cpp

src/wallet/feebumper.cpp

src/wallet/feebumper.h

src/index/base.h

src/index/base.cpp

src/index/txindex.h

src/index/txindex.cpp

src/index/txindex_key.h

src/index/txospenderindex.h

src/index/txospenderindex.cpp

src/index/blockfilterindex.h

src/index/blockfilterindex.cpp

src/index/coinstatsindex.h

src/index/coinstatsindex.cpp

src/index/db_key.h

src/index/disktxpos.h

src/kernel/chain.cpp

src/kernel/chain.h

src/kernel/checks.cpp

src/kernel/checks.h

src/kernel/context.cpp

src/kernel/context.h

src/kernel/cs_main.cpp

src/kernel/cs_main.h

src/kernel/disconnected_transactions.cpp

src/kernel/disconnected_transactions.h

src/kernel/mempool_removal_reason.cpp

src/kernel/mempool_removal_reason.h

src/kernel/coinstats.cpp

src/kernel/coinstats.h

src/kernel/chainparams.cpp

src/kernel/chainparams.h

src/wallet/sqlite.cpp

src/wallet/sqlite.h

src/wallet/transaction.cpp

src/wallet/transaction.h

src/wallet/dump.cpp

src/wallet/dump.h

src/wallet/init.cpp

src/wallet/walletutil.cpp

src/wallet/walletutil.h

src/wallet/wallettool.cpp

src/wallet/wallettool.h

src/wallet/export.h

src/wallet/migrate.cpp

src/wallet/migrate.h

src/wallet/db.h

src/wallet/walletdb.cpp

src/wallet/interfaces.cpp

src/wallet/scriptpubkeyman.cpp

src/wallet/scriptpubkeyman.h

src/kernel/bitcoinkernel.cpp

src/kernel/bitcoinkernel.h

src/kernel/bitcoinkernel_wrapper.h

src/node/chainstate.cpp

src/node/chainstate.h

src/node/blockstorage.cpp

src/node/blockstorage.h

src/node/mempool_persist.cpp

src/node/mempool_persist.h

src/node/utxo_snapshot.cpp

src/node/utxo_snapshot.h

src/node/kernel_notifications.cpp

src/node/kernel_notifications.h

src/node/blockmanager_args.cpp

src/kernel/blockmanager_opts.h

src/util/expected.cpp

src/policy/settings.h

src/util/types.h

src/kernel/messagestartchars.h

src/kernel/warning.h

src/util/exception.h

src/common/license_info.h

src/node/coins_view_args.h

src/node/database_args.h

src/util/batchpriority.h

src/util/ui_change_type.h

src/node/coins_view_args.cpp

src/node/peerman_args.h

src/util/serfloat.h

src/node/blockmanager_args.h

src/node/database_args.cpp

src/util/overloaded.h

src/interfaces/types.h

src/node/chainstatemanager_args.h

src/node/minisketchwrapper.h

src/util/macros.h

src/util/syserror.h

src/common/run_command.h

src/util/bytevectorhash.cpp

src/node/mempool_persist_args.cpp

src/util/exec.h

src/util/rbf.h

src/crypto/hex_base.h

src/node/mempool_persist_args.h

src/interfaces/echo.h

src/util/any.h

src/util/batchpriority.cpp

src/util/threadnames.h

src/node/coin.h

src/node/mempool_args.h

src/util/asmap.h

src/util/bytevectorhash.h

src/node/context.cpp

src/util/insert.h

src/util/readwritefile.h

src/node/peerman_args.cpp

src/node/interface_ui.cpp

src/interfaces/handler.h

src/node/mining_args.h

src/util/hasher.cpp

src/common/init.h

src/kernel/mempool_limits.h

src/common/system.h

src/crypto/sha3.h

src/util/threadinterrupt.cpp

src/node/protocol_version.h

src/util/exception.cpp

src/common/messages.h

src/node/connection_types.cpp

src/util/bip32.h

src/common/license_info.cpp

src/util/stdmutex.h

src/common/run_command.cpp

src/util/check.cpp

src/util/golombrice.h

src/node/types.h

src/node/timeoffsets.h

src/util/readwritefile.cpp

src/util/fastrange.h

src/util/signalinterrupt.h

src/util/task_runner.h

src/util/syserror.cpp

src/common/interfaces.cpp

src/common/types.h

src/util/threadinterrupt.h

src/kernel/chainstatemanager_opts.h

src/node/psbt.h

src/policy/ephemeral_policy.h

src/util/trace.h

src/common/url.cpp

src/kernel/mempool_options.h

src/util/serfloat.cpp

src/kernel/notifications_interface.h

src/node/timeoffsets.cpp

src/node/warnings.cpp

src/util/hash_type.h

src/crypto/hex_base.cpp

src/node/eviction.h

src/util/tokenbucket.h

src/crypto/aes.h

src/common/pcp.h

src/util/feefrac.cpp

src/node/transaction.h

src/util/threadnames.cpp

src/common/signmessage.h

src/util/exec.cpp

src/util/signalinterrupt.cpp

src/clientversion.cpp

src/common/signmessage.cpp

src/compat/assumptions.h

src/compat/byteswap.h

src/deploymentinfo.cpp

src/deploymentinfo.h

src/deploymentstatus.cpp

src/deploymentstatus.h

src/dummywallet.cpp

src/external_signer.h

src/init/bitcoin-gui.cpp

src/init/bitcoin-node.cpp

src/init/bitcoin-qt.cpp

src/init/bitcoin-wallet.cpp

src/init/bitcoind.cpp

src/init/common.h

src/interfaces/init.h

src/interfaces/ipc.h

src/key_io.h

src/logging/categories.h

src/logging/timer.h

src/mapport.h

src/musig.h

src/net_permissions.h

src/netgroup.h

src/netmessagemaker.h

src/node/chainstatemanager_args.cpp

src/node/connection_types.h

src/node/context.h

src/node/interface_ui.h

src/node/mempool_args.cpp

src/node/mining_args.cpp

src/node/minisketchwrapper.cpp

src/node/txreconciliation.h

src/policy/fees/estimator_args.cpp

src/policy/fees/estimator_args.h

src/policy/fees/estimator_man.cpp

src/policy/fees/estimator_man.h

src/policy/packages.h

src/policy/rbf.h

src/policy/truc_policy.h

src/pow.h

src/primitives/block.cpp

src/randomenv.h

src/rest.h

src/script/keyorigin.h

src/script/parsing.cpp

src/script/parsing.h

src/script/script_error.h

src/script/sigcache.cpp

src/script/sigcache.h

src/script/solver.h

src/script/verify_flags.h

src/semaphore_grant.h

src/signet.h

src/span.h

src/support/allocators/secure.h

src/support/allocators/zeroafterfree.h

src/util/tokenpipe.cpp

src/util/translation.h

src/util/vector.h

src/versionbits.h

src/versionbits_impl.h

src/wallet/external_signer_scriptpubkeyman.h

src/wallet/fees.h

src/wallet/load.h

src/wallet/receive.h

src/wallet/rpc/wallet.h

src/wallet/types.h

src/walletinitinterface.h

src/zmq/zmqabstractnotifier.cpp

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