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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) 2021-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 <chain.h>
6#include <coins.h>
7#include <consensus/amount.h>
8#include <consensus/consensus.h>
9#include <consensus/validation.h>
10#include <node/miner.h>
11#include <node/mining_types.h>
12#include <policy/feerate.h>
13#include <policy/packages.h>
14#include <policy/policy.h>
15#include <policy/truc_policy.h>
16#include <primitives/block.h>
17#include <primitives/transaction.h>
18#include <script/script.h>
19#include <sync.h>
20#include <test/fuzz/FuzzedDataProvider.h>
21#include <test/fuzz/fuzz.h>
22#include <test/fuzz/util.h>
23#include <test/fuzz/util/mempool.h>
24#include <test/util/mining.h>
25#include <test/util/random.h>
26#include <test/util/script.h>
27#include <test/util/setup_common.h>
28#include <test/util/txmempool.h>
29#include <txmempool.h>
30#include <util/check.h>
31#include <util/string.h>
32#include <util/time.h>
33#include <util/translation.h>
34#include <validation.h>
35#include <validationinterface.h>
36
37#include <cstddef>
38#include <cstdint>
39#include <functional>
40#include <iterator>
41#include <limits>
42#include <map>
43#include <memory>
44#include <optional>
45#include <set>
46#include <span>
47#include <string>
48#include <utility>
49#include <vector>
50using node::BlockAssembler;
51using node::BlockCreateOptions;
52using node::NodeContext;
53using util::ToString;
54
55namespace {
56
57const TestingSetup* g_setup;
58std::vector<COutPoint> g_outpoints_coinbase_init_mature;
59std::vector<COutPoint> g_outpoints_coinbase_init_immature;
60
61struct MockedTxPool : public CTxMemPool {
62    void RollingFeeUpdate() EXCLUSIVE_LOCKS_REQUIRED(!cs)
63    {
64        LOCK(cs);
65        lastRollingFeeUpdate = GetTime();
66        blockSinceLastRollingFeeBump = true;
67    }
68};
69
70void initialize_tx_pool()
71{
72    static const auto testing_setup = MakeNoLogFileContext<const TestingSetup>();
73    g_setup = testing_setup.get();
74    SetMockTime(WITH_LOCK(g_setup->m_node.chainman->GetMutex(), return g_setup->m_node.chainman->ActiveTip()->Time()));
75
76    for (int i = 0; i < 2 * COINBASE_MATURITY; ++i) {
77        COutPoint prevout{MineBlock(g_setup->m_node, {
78            .coinbase_output_script = P2WSH_OP_TRUE,
79        })};
80        // Remember the txids to avoid expensive disk access later on
81        auto& outpoints = i < COINBASE_MATURITY ?
82                              g_outpoints_coinbase_init_mature :
83                              g_outpoints_coinbase_init_immature;
84        outpoints.push_back(prevout);
85    }
86    g_setup->m_node.validation_signals->SyncWithValidationInterfaceQueue();
87}
88
89struct TransactionsDelta final : public CValidationInterface {
90    std::set<CTransactionRef>& m_removed;
91    std::set<CTransactionRef>& m_added;
92
93    explicit TransactionsDelta(std::set<CTransactionRef>& r, std::set<CTransactionRef>& a)
94        : m_removed{r}, m_added{a} {}
95
96    void TransactionAddedToMempool(const NewMempoolTransactionInfo& tx, uint64_t /* mempool_sequence */) override
97    {
98        Assert(m_added.insert(tx.info.m_tx).second);
99    }
100
101    void TransactionRemovedFromMempool(const CTransactionRef& tx, MemPoolRemovalReason reason, uint64_t /* mempool_sequence */) override
102    {
103        Assert(m_removed.insert(tx).second);
104    }
105};
106
107void SetMempoolConstraints(ArgsManager& args, FuzzedDataProvider& fuzzed_data_provider)
108{
109    args.ForceSetArg("-limitclustercount",
110                     ToString(fuzzed_data_provider.ConsumeIntegralInRange<unsigned>(1, 64)));
111    args.ForceSetArg("-limitclustersize",
112                     ToString(fuzzed_data_provider.ConsumeIntegralInRange<unsigned>(1, 250)));
113    args.ForceSetArg("-maxmempool",
114                     ToString(fuzzed_data_provider.ConsumeIntegralInRange<unsigned>(0, 200)));
115    args.ForceSetArg("-mempoolexpiry",
116                     ToString(fuzzed_data_provider.ConsumeIntegralInRange<unsigned>(0, 999)));
117}
118
119/** Get a list of wtxids to query from the mempool for relay. Make the list heterogeneous with
120 * wtxids of mempool transactions, non-mempool transactions, and duplicates. */
121std::vector<Wtxid> WtxidsToRelay(FuzzedDataProvider& fuzzed_data_provider, const MockedTxPool& tx_pool)
122{
123    LOCK(tx_pool.cs);
124    std::vector<Wtxid> res;
125
126    uint8_t dummy{0};
127    const auto mempool_entries{tx_pool.entryAll()};
128    LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 100) {
129        if (!mempool_entries.empty() && fuzzed_data_provider.ConsumeBool()) {
130            // Wtxid of an in-mempool transaction
131            const auto& entry_ref{PickValue(fuzzed_data_provider, mempool_entries).get()};
132            res.push_back(entry_ref.GetTx().GetWitnessHash());
133            // Don't remove it from the mempool, so the next pick is possibly a duplicate
134        } else {
135            // Wtxid of a not-in-mempool transaction
136            res.push_back(Wtxid::FromUint256(uint256{dummy}));
137            // Possibly make the next wtxid of a not-in-mempool transaction, a duplicate
138            if (fuzzed_data_provider.ConsumeBool()) dummy++;
139        }
140    }
141
142    return res;
143}
144
145void Finish(FuzzedDataProvider& fuzzed_data_provider, MockedTxPool& tx_pool, Chainstate& chainstate)
146{
147    WITH_LOCK(::cs_main, tx_pool.check(chainstate.CoinsTip(), chainstate.m_chain.Height() + 1));
148    {
149        BlockCreateOptions options{
150            .block_min_fee_rate = CFeeRate{ConsumeMoney(fuzzed_data_provider, /*max=*/COIN)},
151            .block_max_weight = fuzzed_data_provider.ConsumeIntegralInRange<uint64_t>(DEFAULT_BLOCK_RESERVED_WEIGHT, MAX_BLOCK_WEIGHT),
152        };
153        auto assembler = BlockAssembler{chainstate, &tx_pool, options};
154        auto block_template = assembler.CreateNewBlock();
155        Assert(block_template->block.vtx.size() >= 1);
156
157        // Try updating the mempool for this block, as though it were mined.
158        LOCK2(::cs_main, tx_pool.cs);
159        tx_pool.removeForBlock(block_template->block.vtx);
160
161        // Now try to add those transactions back, as though a reorg happened.
162        std::vector<Txid> hashes_to_update;
163        for (const auto& tx : block_template->block.vtx) {
164            const auto res = AcceptToMemoryPool(chainstate, tx, GetTime(), true, /*test_accept=*/false);
165            if (res.m_result_type == MempoolAcceptResult::ResultType::VALID) {
166                hashes_to_update.push_back(tx->GetHash());
167            } else {
168                tx_pool.removeRecursive(*tx, MemPoolRemovalReason::REORG);
169            }
170        }
171        tx_pool.UpdateTransactionsFromBlock(hashes_to_update);
172    }
173    const auto info_all = tx_pool.infoAll();
174    if (!info_all.empty()) {
175        const auto& tx_to_remove = *PickValue(fuzzed_data_provider, info_all).tx;
176        WITH_LOCK(tx_pool.cs, tx_pool.removeRecursive(tx_to_remove, MemPoolRemovalReason::BLOCK /* dummy */));
177        assert(tx_pool.size() < info_all.size());
178    }
179
180    // Query a number of mempool entries as if to relay them, and assert some invariants on the result.
181    auto wtxids_to_relay{WtxidsToRelay(fuzzed_data_provider, tx_pool)};
182    const auto wtxids_count_before{wtxids_to_relay.size()};
183    const auto n_to_sort{fuzzed_data_provider.ConsumeIntegralInRange<size_t>(0, 100)};
184    const auto sorted_iter{WITH_LOCK(tx_pool.cs, return tx_pool.ExtractBestByMiningScoreWithTopology(wtxids_to_relay, n_to_sort))};
185    const auto expected_count{std::min(n_to_sort, wtxids_count_before)};
186    // We removed at least as many transactions from the list as we expected sorted entries.
187    Assert(wtxids_to_relay.size() <= wtxids_count_before - expected_count);
188    // When there is enough non-duplicate in-mempool transactions (list of remaining wtxids is
189    // non-empty), we must have received the expected number of entries.
190    Assert(sorted_iter.size() == expected_count || wtxids_to_relay.empty());
191    if (n_to_sort > 0) {
192        // If we asked for a positive number of entries, we must have removed all wtxids that do
193        // not correspond to a mempool entry..
194        const auto is_in_mempool = [&](const auto& wtxid) EXCLUSIVE_LOCKS_REQUIRED(tx_pool.cs) { return tx_pool.GetIter(wtxid).has_value(); };
195        Assert(WITH_LOCK(tx_pool.cs, return std::ranges::all_of(wtxids_to_relay, is_in_mempool)));
196        // ..As well as all duplicates.
197        const auto wtxids_count{wtxids_to_relay.size()};
198        const std::set<Wtxid> unique_wtxids{std::make_move_iterator(wtxids_to_relay.begin()), std::make_move_iterator(wtxids_to_relay.end())};
199        Assert(unique_wtxids.size() == wtxids_count);
200    }
201
202    if (fuzzed_data_provider.ConsumeBool()) {
203        // Try eviction
204        LOCK2(::cs_main, tx_pool.cs);
205        tx_pool.TrimToSize(fuzzed_data_provider.ConsumeIntegralInRange<size_t>(0U, tx_pool.DynamicMemoryUsage() * 2));
206    }
207    if (fuzzed_data_provider.ConsumeBool()) {
208        // Try expiry
209        LOCK2(::cs_main, tx_pool.cs);
210        tx_pool.Expire(GetMockTime() - std::chrono::seconds(fuzzed_data_provider.ConsumeIntegral<uint32_t>()));
211    }
212    WITH_LOCK(::cs_main, tx_pool.check(chainstate.CoinsTip(), chainstate.m_chain.Height() + 1));
213    g_setup->m_node.validation_signals->SyncWithValidationInterfaceQueue();
214}
215
216void MockTime(FuzzedDataProvider& fuzzed_data_provider, const Chainstate& chainstate)
217{
218    const auto time = ConsumeTime(fuzzed_data_provider,
219                                  chainstate.m_chain.Tip()->GetMedianTimePast() + 1,
220                                  std::numeric_limits<decltype(chainstate.m_chain.Tip()->nTime)>::max());
221    SetMockTime(time);
222}
223
224std::unique_ptr<CTxMemPool> MakeMempool(FuzzedDataProvider& fuzzed_data_provider, const NodeContext& node)
225{
226    // Take the default options for tests...
227    CTxMemPool::Options mempool_opts{MemPoolOptionsForTest(node)};
228
229    // ...override specific options for this specific fuzz suite
230    mempool_opts.check_ratio = 1;
231    mempool_opts.require_standard = fuzzed_data_provider.ConsumeBool();
232
233    // ...and construct a CTxMemPool from it
234    bilingual_str error;
235    auto mempool{std::make_unique<CTxMemPool>(std::move(mempool_opts), error)};
236    // ... ignore the error since it might be beneficial to fuzz even when the
237    // mempool size is unreasonably small
238    Assert(error.empty() || error.original.starts_with("-maxmempool must be at least "));
239    return mempool;
240}
241
242void CheckATMPInvariants(const MempoolAcceptResult& res, bool txid_in_mempool, bool wtxid_in_mempool)
243{
244
245    switch (res.m_result_type) {
246    case MempoolAcceptResult::ResultType::VALID:
247    {
248        Assert(txid_in_mempool);
249        Assert(wtxid_in_mempool);
250        Assert(res.m_state.IsValid());

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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