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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) 2020-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 <banman.h>
6#include <common/args.h>
7#include <netaddress.h>
8#include <test/fuzz/FuzzedDataProvider.h>
9#include <test/fuzz/fuzz.h>
10#include <test/fuzz/util.h>
11#include <test/fuzz/util/net.h>
12#include <test/util/setup_common.h>
13#include <test/util/time.h>
14#include <util/fs.h>
15#include <util/readwritefile.h>
16
17#include <cassert>
18#include <cstdint>
19#include <limits>
20#include <string>
21#include <vector>
22
23namespace {
24int64_t ConsumeBanTimeOffset(FuzzedDataProvider& fuzzed_data_provider) noexcept
25{
26    // Avoid signed integer overflow by capping to int32_t max:
27    // banman.cpp:137:73: runtime error: signed integer overflow: 1591700817 + 9223372036854775807 cannot be represented in type 'long'
28    return fuzzed_data_provider.ConsumeIntegralInRange<int64_t>(std::numeric_limits<int64_t>::min(), std::numeric_limits<int32_t>::max());
29}
30} // namespace
31
32void initialize_banman()
33{
34    static const auto testing_setup = MakeNoLogFileContext<>();
35}
36
37static bool operator==(const CBanEntry& lhs, const CBanEntry& rhs)
38{
39    return lhs.nVersion == rhs.nVersion &&
40           lhs.nCreateTime == rhs.nCreateTime &&
41           lhs.nBanUntil == rhs.nBanUntil;
42}
43
44FUZZ_TARGET(banman, .init = initialize_banman)
45{
46    SeedRandomStateForTest(SeedRand::ZEROS);
47    FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
48    FakeNodeClock clock{ConsumeTime(fuzzed_data_provider)};
49    fs::path banlist_file = gArgs.GetDataDirNet() / "fuzzed_banlist";
50
51    const bool start_with_corrupted_banlist{fuzzed_data_provider.ConsumeBool()};
52    bool force_read_and_write_to_err{false};
53    if (start_with_corrupted_banlist) {
54        assert(WriteBinaryFile(banlist_file + ".json",
55                               fuzzed_data_provider.ConsumeRandomLengthString()));
56    } else {
57        force_read_and_write_to_err = fuzzed_data_provider.ConsumeBool();
58        if (force_read_and_write_to_err) {
59            banlist_file = fs::path{"path"} / "to" / "inaccessible" / "fuzzed_banlist";
60        }
61    }
62
63    {
64        BanMan ban_man{banlist_file, /*client_interface=*/nullptr, /*default_ban_time=*/ConsumeBanTimeOffset(fuzzed_data_provider)};
65        // The complexity is O(N^2), where N is the input size, because each call
66        // might call DumpBanlist (or other methods that are at least linear
67        // complexity of the input size).
68        bool contains_invalid{false};
69        LIMITED_WHILE (fuzzed_data_provider.ConsumeBool(), 300) {
70            CallOneOf(
71                fuzzed_data_provider,
72                [&] {
73                    CNetAddr net_addr{ConsumeNetAddr(fuzzed_data_provider)};
74                    if (!net_addr.IsCJDNS() || !net_addr.IsValid()) {
75                        const std::optional<CNetAddr>& addr{LookupHost(net_addr.ToStringAddr(), /*fAllowLookup=*/false)};
76                        if (addr.has_value() && addr->IsValid()) {
77                            net_addr = *addr;
78                        } else {
79                            contains_invalid = true;
80                        }
81                    }
82                    auto ban_time_offset = ConsumeBanTimeOffset(fuzzed_data_provider);
83                    auto since_unix_epoch = fuzzed_data_provider.ConsumeBool();
84                    ban_man.Ban(net_addr, ban_time_offset, since_unix_epoch);
85                },
86                [&] {
87                    CSubNet subnet{ConsumeSubNet(fuzzed_data_provider)};
88                    subnet = LookupSubNet(subnet.ToString());
89                    if (!subnet.IsValid()) {
90                        contains_invalid = true;
91                    }
92                    auto ban_time_offset = ConsumeBanTimeOffset(fuzzed_data_provider);
93                    auto since_unix_epoch = fuzzed_data_provider.ConsumeBool();
94                    ban_man.Ban(subnet, ban_time_offset, since_unix_epoch);
95                },
96                [&] {
97                    ban_man.ClearBanned();
98                },
99                [&] {
100                    ban_man.IsBanned(ConsumeNetAddr(fuzzed_data_provider));
101                },
102                [&] {
103                    ban_man.IsBanned(ConsumeSubNet(fuzzed_data_provider));
104                },
105                [&] {
106                    ban_man.Unban(ConsumeNetAddr(fuzzed_data_provider));
107                },
108                [&] {
109                    ban_man.Unban(ConsumeSubNet(fuzzed_data_provider));
110                },
111                [&] {
112                    banmap_t banmap;
113                    ban_man.GetBanned(banmap);
114                },
115                [&] {
116                    ban_man.DumpBanlist();
117                },
118                [&] {
119                    ban_man.Discourage(ConsumeNetAddr(fuzzed_data_provider));
120                },
121                [&] {
122                    ban_man.IsDiscouraged(ConsumeNetAddr(fuzzed_data_provider));
123                });
124        }
125        if (!force_read_and_write_to_err) {
126            ban_man.DumpBanlist();
127            clock.set(ConsumeTime(fuzzed_data_provider));
128            banmap_t banmap;
129            ban_man.GetBanned(banmap);
130            BanMan ban_man_read{banlist_file, /*client_interface=*/nullptr, /*default_ban_time=*/0};
131            banmap_t banmap_read;
132            ban_man_read.GetBanned(banmap_read);
133            if (!contains_invalid) {
134                assert(banmap == banmap_read);
135            }
136        }
137    }
138    fs::remove(fs::PathToString(banlist_file + ".json"));
139}
140

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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