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

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1// Copyright (c) 2023-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 <consensus/amount.h>
7#include <consensus/consensus.h>
8#include <consensus/validation.h>
9#include <node/mining_types.h>
10#include <policy/feerate.h>
11#include <policy/packages.h>
12#include <policy/policy.h>
13#include <policy/settings.h>
14#include <policy/truc_policy.h>
15#include <primitives/transaction.h>
16#include <script/script.h>
17#include <sync.h>
18#include <test/fuzz/FuzzedDataProvider.h>
19#include <test/fuzz/fuzz.h>
20#include <test/fuzz/util.h>
21#include <test/fuzz/util/mempool.h>
22#include <test/util/mining.h>
23#include <test/util/random.h>
24#include <test/util/script.h>
25#include <test/util/setup_common.h>
26#include <test/util/txmempool.h>
27#include <txmempool.h>
28#include <util/check.h>
29#include <util/hasher.h>
30#include <util/time.h>
31#include <util/translation.h>
32#include <validation.h>
33#include <validationinterface.h>
34
35#include <cstddef>
36#include <cstdint>
37#include <functional>
38#include <iterator>
39#include <limits>
40#include <map>
41#include <memory>
42#include <optional>
43#include <set>
44#include <span>
45#include <string>
46#include <unordered_map>
47#include <utility>
48#include <vector>
49using node::NodeContext;
50
51namespace {
52
53const TestingSetup* g_setup;
54std::vector<COutPoint> g_outpoints_coinbase_init_mature;
55
56struct MockedTxPool : public CTxMemPool {
57    void RollingFeeUpdate() EXCLUSIVE_LOCKS_REQUIRED(!cs)
58    {
59        LOCK(cs);
60        lastRollingFeeUpdate = GetTime();
61        blockSinceLastRollingFeeBump = true;
62    }
63};
64
65void initialize_tx_pool()
66{
67    static const auto testing_setup = MakeNoLogFileContext<const TestingSetup>();
68    g_setup = testing_setup.get();
69    SetMockTime(WITH_LOCK(g_setup->m_node.chainman->GetMutex(), return g_setup->m_node.chainman->ActiveTip()->Time()));
70
71    for (int i = 0; i < 2 * COINBASE_MATURITY; ++i) {
72        COutPoint prevout{MineBlock(g_setup->m_node, {
73            .coinbase_output_script = P2WSH_EMPTY,
74        })};
75        if (i < COINBASE_MATURITY) {
76            // Remember the txids to avoid expensive disk access later on
77            g_outpoints_coinbase_init_mature.push_back(prevout);
78        }
79    }
80    g_setup->m_node.validation_signals->SyncWithValidationInterfaceQueue();
81}
82
83struct OutpointsUpdater final : public CValidationInterface {
84    std::set<COutPoint>& m_mempool_outpoints;
85
86    explicit OutpointsUpdater(std::set<COutPoint>& r)
87        : m_mempool_outpoints{r} {}
88
89    void TransactionAddedToMempool(const NewMempoolTransactionInfo& tx, uint64_t /* mempool_sequence */) override
90    {
91        // for coins spent we always want to be able to rbf so they're not removed
92
93        // outputs from this tx can now be spent
94        for (uint32_t index{0}; index < tx.info.m_tx->vout.size(); ++index) {
95            m_mempool_outpoints.insert(COutPoint{tx.info.m_tx->GetHash(), index});
96        }
97    }
98
99    void TransactionRemovedFromMempool(const CTransactionRef& tx, MemPoolRemovalReason reason, uint64_t /* mempool_sequence */) override
100    {
101        // outpoints spent by this tx are now available
102        for (const auto& input : tx->vin) {
103            // Could already exist if this was a replacement
104            m_mempool_outpoints.insert(input.prevout);
105        }
106        // outpoints created by this tx no longer exist
107        for (uint32_t index{0}; index < tx->vout.size(); ++index) {
108            m_mempool_outpoints.erase(COutPoint{tx->GetHash(), index});
109        }
110    }
111};
112
113struct TransactionsDelta final : public CValidationInterface {
114    std::set<CTransactionRef>& m_added;
115
116    explicit TransactionsDelta(std::set<CTransactionRef>& a)
117        : m_added{a} {}
118
119    void TransactionAddedToMempool(const NewMempoolTransactionInfo& tx, uint64_t /* mempool_sequence */) override
120    {
121        // Transactions may be entered and booted any number of times
122        m_added.insert(tx.info.m_tx);
123    }
124
125    void TransactionRemovedFromMempool(const CTransactionRef& tx, MemPoolRemovalReason reason, uint64_t /* mempool_sequence */) override
126    {
127        // Transactions may be entered and booted any number of times
128         m_added.erase(tx);
129    }
130};
131
132void MockTime(FuzzedDataProvider& fuzzed_data_provider, const Chainstate& chainstate)
133{
134    const auto time = ConsumeTime(fuzzed_data_provider,
135                                  chainstate.m_chain.Tip()->GetMedianTimePast() + 1,
136                                  std::numeric_limits<decltype(chainstate.m_chain.Tip()->nTime)>::max());
137    SetMockTime(time);
138}
139
140std::unique_ptr<CTxMemPool> MakeMempool(FuzzedDataProvider& fuzzed_data_provider, const NodeContext& node)
141{
142    // Take the default options for tests...
143    CTxMemPool::Options mempool_opts{MemPoolOptionsForTest(node)};
144
145
146    // ...override specific options for this specific fuzz suite
147    mempool_opts.limits.ancestor_count = fuzzed_data_provider.ConsumeIntegralInRange<unsigned>(0, 50);
148    mempool_opts.limits.descendant_count = fuzzed_data_provider.ConsumeIntegralInRange<unsigned>(0, 50);
149    mempool_opts.max_size_bytes = fuzzed_data_provider.ConsumeIntegralInRange<unsigned>(0, 200) * 1'000'000;
150    mempool_opts.expiry = std::chrono::hours{fuzzed_data_provider.ConsumeIntegralInRange<unsigned>(0, 999)};
151    // Only interested in 2 cases: sigop cost 0 or when single legacy sigop cost is >> 1KvB
152    nBytesPerSigOp = fuzzed_data_provider.ConsumeIntegralInRange<unsigned>(0, 1) * 10'000;
153
154    mempool_opts.check_ratio = 1;
155    mempool_opts.require_standard = fuzzed_data_provider.ConsumeBool();
156
157    bilingual_str error;
158    // ...and construct a CTxMemPool from it
159    auto mempool{std::make_unique<CTxMemPool>(std::move(mempool_opts), error)};
160    // ... ignore the error since it might be beneficial to fuzz even when the
161    // mempool size is unreasonably small
162    Assert(error.empty() || error.original.starts_with("-maxmempool must be at least "));
163    return mempool;
164}
165
166std::unique_ptr<CTxMemPool> MakeEphemeralMempool(const NodeContext& node)
167{
168    // Take the default options for tests...
169    CTxMemPool::Options mempool_opts{MemPoolOptionsForTest(node)};
170
171    mempool_opts.check_ratio = 1;
172
173    // Require standardness rules otherwise ephemeral dust is no-op
174    mempool_opts.require_standard = true;
175
176    // And set minrelay to 0 to allow ephemeral parent tx even with non-TRUC
177    mempool_opts.min_relay_feerate = CFeeRate(0);
178
179    bilingual_str error;
180    // ...and construct a CTxMemPool from it
181    auto mempool{std::make_unique<CTxMemPool>(std::move(mempool_opts), error)};
182    Assert(error.empty());
183    return mempool;
184}
185
186// Scan mempool for a tx that has spent dust and return a
187// prevout of the child that isn't the dusty parent itself.
188// This is used to double-spend the child out of the mempool,
189// leaving the parent childless.
190// This assumes CheckMempoolEphemeralInvariants has passed for tx_pool.
191std::optional<COutPoint> GetChildEvictingPrevout(const CTxMemPool& tx_pool)
192{
193    LOCK(tx_pool.cs);
194    for (const auto& tx_info : tx_pool.infoAll()) {
195        const auto& entry = *Assert(tx_pool.GetEntry(tx_info.tx->GetHash()));
196        std::vector<uint32_t> dust_indexes{GetDust(*tx_info.tx, tx_pool.m_opts.dust_relay_feerate)};
197        if (!dust_indexes.empty()) {
198            const auto& children = tx_pool.GetChildren(entry);
199            if (!children.empty()) {
200                Assert(children.size() == 1);
201                // Find an input that doesn't spend from parent's txid
202                const auto& only_child = children.begin()->get().GetTx();
203                for (const auto& tx_input : only_child.vin) {
204                    if (tx_input.prevout.hash != tx_info.tx->GetHash()) {
205                        return tx_input.prevout;
206                    }
207                }
208            }
209        }
210    }
211
212    return std::nullopt;
213}
214
215FUZZ_TARGET(ephemeral_package_eval, .init = initialize_tx_pool)
216{
217    SeedRandomStateForTest(SeedRand::ZEROS);
218    FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
219    const auto& node = g_setup->m_node;
220    auto& chainstate{static_cast<DummyChainState&>(node.chainman->ActiveChainstate())};
221
222    MockTime(fuzzed_data_provider, chainstate);
223
224    // All RBF-spendable outpoints outside of the unsubmitted package
225    std::set<COutPoint> mempool_outpoints;
226    std::unordered_map<COutPoint, CAmount, SaltedOutpointHasher> outpoints_value;
227    for (const auto& outpoint : g_outpoints_coinbase_init_mature) {
228        Assert(mempool_outpoints.insert(outpoint).second);
229        outpoints_value[outpoint] = 50 * COIN;
230    }
231
232    auto outpoints_updater = std::make_shared<OutpointsUpdater>(mempool_outpoints);
233    node.validation_signals->RegisterSharedValidationInterface(outpoints_updater);
234
235    auto tx_pool_{MakeEphemeralMempool(node)};
236    MockedTxPool& tx_pool = *static_cast<MockedTxPool*>(tx_pool_.get());
237
238    chainstate.SetMempool(&tx_pool);
239
240    LIMITED_WHILE (fuzzed_data_provider.remaining_bytes() > 0, 300) {
241        Assert(!mempool_outpoints.empty());
242
243        std::vector<CTransactionRef> txs;
244
245        // Find something we may want to double-spend with two input single tx
246        std::optional<COutPoint> outpoint_to_rbf{fuzzed_data_provider.ConsumeBool() ? GetChildEvictingPrevout(tx_pool) : std::nullopt};
247
248        // Make small packages
249        const auto num_txs = outpoint_to_rbf ? 1 : fuzzed_data_provider.ConsumeIntegralInRange<size_t>(1, 4);
250

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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