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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.

4,502 bytes · SHA-256 09e30070ee44e6b9… · View upstream ↗

1// Copyright (c) 2023-present The Bitcoin Core developers
2// Distributed under the MIT software license, see the accompanying
3// file COPYING or https://opensource.org/license/mit.
4
5#include <blockencodings.h>
6#include <consensus/merkle.h>
7#include <consensus/validation.h>
8#include <primitives/block.h>
9#include <primitives/transaction.h>
10#include <test/fuzz/FuzzedDataProvider.h>
11#include <test/fuzz/fuzz.h>
12#include <test/fuzz/util.h>
13#include <test/fuzz/util/mempool.h>
14#include <test/util/setup_common.h>
15#include <test/util/time.h>
16#include <test/util/txmempool.h>
17#include <txmempool.h>
18#include <util/check.h>
19#include <util/time.h>
20#include <util/translation.h>
21
22#include <cstddef>
23#include <cstdint>
24#include <limits>
25#include <memory>
26#include <optional>
27#include <set>
28#include <vector>
29
30namespace {
31const TestingSetup* g_setup;
32} // namespace
33
34void initialize_pdb()
35{
36    static const auto testing_setup = MakeNoLogFileContext<const TestingSetup>();
37    g_setup = testing_setup.get();
38}
39
40PartiallyDownloadedBlock::IsBlockMutatedFn FuzzedIsBlockMutated(bool result)
41{
42    return [result](const CBlock& block, bool) {
43        return result;
44    };
45}
46
47FUZZ_TARGET(partially_downloaded_block, .init = initialize_pdb)
48{
49    SeedRandomStateForTest(SeedRand::ZEROS);
50    FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
51    FakeNodeClock clock{ConsumeTime(fuzzed_data_provider)};
52
53    auto block{ConsumeDeserializable<CBlock>(fuzzed_data_provider, TX_WITH_WITNESS)};
54    if (!block || block->vtx.size() == 0 ||
55        block->vtx.size() >= std::numeric_limits<uint16_t>::max()) {
56        return;
57    }
58
59    CBlockHeaderAndShortTxIDs cmpctblock{*block, fuzzed_data_provider.ConsumeIntegral<uint64_t>()};
60
61    bilingual_str error;
62    CTxMemPool pool{MemPoolOptionsForTest(g_setup->m_node), error};
63    Assert(error.empty());
64    PartiallyDownloadedBlock pdb{&pool};
65
66    // Set of available transactions (mempool or extra_txn)
67    std::set<uint16_t> available;
68    // The coinbase is always available
69    available.insert(0);
70
71    std::vector<std::pair<Wtxid, CTransactionRef>> extra_txn;
72    for (size_t i = 1; i < block->vtx.size(); ++i) {
73        auto tx{block->vtx[i]};
74
75        bool add_to_extra_txn{fuzzed_data_provider.ConsumeBool()};
76        bool add_to_mempool{fuzzed_data_provider.ConsumeBool()};
77
78        if (add_to_extra_txn) {
79            extra_txn.emplace_back(tx->GetWitnessHash(), tx);
80            available.insert(i);
81        }
82
83        if (add_to_mempool && !pool.exists(tx->GetHash())) {
84            LOCK2(cs_main, pool.cs);
85            TryAddToMempool(pool, ConsumeTxMemPoolEntry(fuzzed_data_provider, *tx));
86            available.insert(i);
87        }
88    }
89
90    auto init_status{pdb.InitData(cmpctblock, extra_txn)};
91
92    std::vector<CTransactionRef> missing;
93    // Whether we skipped a transaction that should be included in `missing`.
94    // FillBlock should never return READ_STATUS_OK if that is the case.
95    bool skipped_missing{false};
96    for (size_t i = 0; i < cmpctblock.BlockTxCount(); i++) {
97        // If init_status == READ_STATUS_OK then a available transaction in the
98        // compact block (i.e. IsTxAvailable(i) == true) implies that we marked
99        // that transaction as available above (i.e. available.contains(i)).
100        // The reverse is not true, due to possible compact block short id
101        // collisions (i.e. available.contains(i) does not imply
102        // IsTxAvailable(i) == true).
103        if (init_status == READ_STATUS_OK) {
104            assert(!pdb.IsTxAvailable(i) || available.contains(i));
105        }
106
107        bool skip{fuzzed_data_provider.ConsumeBool()};
108        if (!pdb.IsTxAvailable(i) && !skip) {
109            missing.push_back(block->vtx[i]);
110        }
111
112        skipped_missing |= (!pdb.IsTxAvailable(i) && skip);
113    }
114
115    bool segwit_active{fuzzed_data_provider.ConsumeBool()};
116
117    // Mock IsBlockMutated
118    bool fail_block_mutated{fuzzed_data_provider.ConsumeBool()};
119    pdb.m_check_block_mutated_mock = FuzzedIsBlockMutated(fail_block_mutated);
120
121    CBlock reconstructed_block;
122    auto fill_status{pdb.FillBlock(reconstructed_block, missing, segwit_active)};
123    switch (fill_status) {
124    case READ_STATUS_OK:
125        assert(!skipped_missing);
126        assert(!fail_block_mutated);
127        assert(block->GetHash() == reconstructed_block.GetHash());
128        break;
129    case READ_STATUS_FAILED:
130        assert(fail_block_mutated);
131        break;
132    case READ_STATUS_INVALID:
133        break;
134    }
135}
136

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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