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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 <cstdint>
6
7#include <vector>
8
9#include <util/feefrac.h>
10#include <policy/rbf.h>
11
12#include <test/fuzz/fuzz.h>
13#include <test/fuzz/util.h>
14
15#include <cassert>
16
17namespace {
18
19/** Takes the pre-computed and topologically-valid chunks and generates a fee diagram which starts at FeeFrac of (0, 0) */
20std::vector<FeeFrac> BuildDiagramFromChunks(const std::span<const FeeFrac> chunks)
21{
22    std::vector<FeeFrac> diagram;
23    diagram.reserve(chunks.size() + 1);
24
25    diagram.emplace_back(0, 0);
26    for (auto& chunk : chunks) {
27        diagram.emplace_back(diagram.back() + chunk);
28    }
29    return diagram;
30}
31
32
33/** Evaluate a diagram at a specific size, returning the fee as a fraction.
34 *
35 * Fees in diagram cannot exceed 2^32, as the returned evaluation could overflow
36 * the FeeFrac::fee field in the result. */
37FeeFrac EvaluateDiagram(int32_t size, std::span<const FeeFrac> diagram)
38{
39    assert(diagram.size() > 0);
40    unsigned not_above = 0;
41    unsigned not_below = diagram.size() - 1;
42    // If outside the range of diagram, extend begin/end.
43    if (size < diagram[not_above].size) return {diagram[not_above].fee, 1};
44    if (size > diagram[not_below].size) return {diagram[not_below].fee, 1};
45    // Perform bisection search to locate the diagram segment that size is in.
46    while (not_below > not_above + 1) {
47        unsigned mid = (not_below + not_above) / 2;
48        if (diagram[mid].size <= size) not_above = mid;
49        if (diagram[mid].size >= size) not_below = mid;
50    }
51    // If the size matches a transition point between segments, return its fee.
52    if (not_below == not_above) return {diagram[not_below].fee, 1};
53    // Otherwise, interpolate.
54    auto dir_coef = diagram[not_below] - diagram[not_above];
55    assert(dir_coef.size > 0);
56    // Let A = diagram[not_above] and B = diagram[not_below]
57    const auto& point_a = diagram[not_above];
58    // We want to return:
59    //     A.fee + (B.fee - A.fee) / (B.size - A.size) * (size - A.size)
60    //   = A.fee + dir_coef.fee / dir_coef.size * (size - A.size)
61    //   = (A.fee * dir_coef.size + dir_coef.fee * (size - A.size)) / dir_coef.size
62    assert(size >= point_a.size);
63    return {point_a.fee * dir_coef.size + dir_coef.fee * (size - point_a.size), dir_coef.size};
64}
65
66std::strong_ordering CompareFeeFracWithDiagram(const FeeFrac& ff, std::span<const FeeFrac> diagram)
67{
68    return ByRatio{FeeFrac{ff.fee, 1}} <=> ByRatio{EvaluateDiagram(ff.size, diagram)};
69}
70
71std::partial_ordering CompareDiagrams(std::span<const FeeFrac> dia1, std::span<const FeeFrac> dia2)
72{
73    bool all_ge = true;
74    bool all_le = true;
75    for (const auto p1 : dia1) {
76        auto cmp = CompareFeeFracWithDiagram(p1, dia2);
77        if (std::is_lt(cmp)) all_ge = false;
78        if (std::is_gt(cmp)) all_le = false;
79    }
80    for (const auto p2 : dia2) {
81        auto cmp = CompareFeeFracWithDiagram(p2, dia1);
82        if (std::is_lt(cmp)) all_le = false;
83        if (std::is_gt(cmp)) all_ge = false;
84    }
85    if (all_ge && all_le) return std::partial_ordering::equivalent;
86    if (all_ge && !all_le) return std::partial_ordering::greater;
87    if (!all_ge && all_le) return std::partial_ordering::less;
88    return std::partial_ordering::unordered;
89}
90
91void PopulateChunks(FuzzedDataProvider& fuzzed_data_provider, std::vector<FeeFrac>& chunks)
92{
93    chunks.clear();
94
95    LIMITED_WHILE (fuzzed_data_provider.ConsumeBool(), 50) {
96        chunks.emplace_back(fuzzed_data_provider.ConsumeIntegralInRange<int64_t>(INT32_MIN>>1, INT32_MAX>>1), fuzzed_data_provider.ConsumeIntegralInRange<int32_t>(1, 1000000));
97    }
98    return;
99}
100
101} // namespace
102
103FUZZ_TARGET(build_and_compare_feerate_diagram)
104{
105    // Generate a random set of chunks
106    FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
107    std::vector<FeeFrac> chunks1, chunks2;
108    FeeFrac empty{0, 0};
109
110    PopulateChunks(fuzzed_data_provider, chunks1);
111    PopulateChunks(fuzzed_data_provider, chunks2);
112
113    std::vector<FeeFrac> diagram1{BuildDiagramFromChunks(chunks1)};
114    std::vector<FeeFrac> diagram2{BuildDiagramFromChunks(chunks2)};
115
116    assert(diagram1.front() == empty);
117    assert(diagram2.front() == empty);
118
119    auto real = CompareChunks(chunks1, chunks2);
120    auto sim = CompareDiagrams(diagram1, diagram2);
121    assert(real == sim);
122
123    // Do explicit evaluation at up to 1000 points, and verify consistency with the result.
124    LIMITED_WHILE (fuzzed_data_provider.remaining_bytes(), 1000) {
125        int32_t size = fuzzed_data_provider.ConsumeIntegralInRange<int32_t>(0, diagram2.back().size);
126        auto eval1 = EvaluateDiagram(size, diagram1);
127        auto eval2 = EvaluateDiagram(size, diagram2);
128        auto cmp = ByRatio{eval1} <=> ByRatio{eval2};
129        if (std::is_lt(cmp)) assert(!std::is_gt(real));
130        if (std::is_gt(cmp)) assert(!std::is_lt(real));
131    }
132}
133

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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