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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) 2019-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 <chainparams.h>
6#include <compressor.h>
7#include <core_io.h>
8#include <core_memusage.h>
9#include <key_io.h>
10#include <policy/policy.h>
11#include <pubkey.h>
12#include <rpc/util.h>
13#include <script/descriptor.h>
14#include <script/interpreter.h>
15#include <script/script.h>
16#include <script/script_error.h>
17#include <script/sign.h>
18#include <script/signingprovider.h>
19#include <script/solver.h>
20#include <streams.h>
21#include <test/fuzz/FuzzedDataProvider.h>
22#include <test/fuzz/fuzz.h>
23#include <test/fuzz/util.h>
24#include <univalue.h>
25#include <util/chaintype.h>
26
27#include <algorithm>
28#include <cassert>
29#include <cstdint>
30#include <optional>
31#include <string>
32#include <vector>
33
34void initialize_script()
35{
36    SelectParams(ChainType::REGTEST);
37}
38
39FUZZ_TARGET(script, .init = initialize_script)
40{
41    FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
42    const CScript script{ConsumeScript(fuzzed_data_provider)};
43
44    CompressedScript compressed;
45    if (CompressScript(script, compressed)) {
46        const unsigned int size = compressed[0];
47        compressed.erase(compressed.begin());
48        assert(size <= 5);
49        CScript decompressed_script;
50        const bool ok = DecompressScript(decompressed_script, size, compressed);
51        assert(ok);
52        assert(script == decompressed_script);
53    }
54
55    TxoutType which_type;
56    bool is_standard_ret = IsStandard(script, which_type);
57    if (!is_standard_ret) {
58        assert(which_type == TxoutType::NONSTANDARD ||
59               which_type == TxoutType::NULL_DATA ||
60               which_type == TxoutType::MULTISIG);
61    }
62    if (which_type == TxoutType::NONSTANDARD) {
63        assert(!is_standard_ret);
64    }
65    if (which_type == TxoutType::NULL_DATA) {
66        assert(script.IsUnspendable());
67    }
68    if (script.IsUnspendable()) {
69        assert(which_type == TxoutType::NULL_DATA ||
70               which_type == TxoutType::NONSTANDARD);
71    }
72
73    CTxDestination address;
74    bool extract_destination_ret = ExtractDestination(script, address);
75    if (!extract_destination_ret) {
76        assert(which_type == TxoutType::PUBKEY ||
77               which_type == TxoutType::NONSTANDARD ||
78               which_type == TxoutType::NULL_DATA ||
79               which_type == TxoutType::MULTISIG);
80    }
81    if (which_type == TxoutType::NONSTANDARD ||
82        which_type == TxoutType::NULL_DATA ||
83        which_type == TxoutType::MULTISIG) {
84        assert(!extract_destination_ret);
85    }
86
87    const FlatSigningProvider signing_provider;
88    (void)InferDescriptor(script, signing_provider);
89    (void)IsSegWitOutput(signing_provider, script);
90
91    (void)RecursiveDynamicUsage(script);
92
93    std::vector<std::vector<unsigned char>> solutions;
94    (void)Solver(script, solutions);
95
96    {
97        const std::vector<uint8_t> bytes = ConsumeRandomLengthByteVector(fuzzed_data_provider);
98        CompressedScript compressed_script;
99        compressed_script.assign(bytes.begin(), bytes.end());
100        // DecompressScript(..., ..., bytes) is not guaranteed to be defined if the bytes vector is too short
101        if (compressed_script.size() >= 32) {
102            CScript decompressed_script;
103            DecompressScript(decompressed_script, fuzzed_data_provider.ConsumeIntegral<unsigned int>(), compressed_script);
104        }
105    }
106
107    const std::optional<CScript> other_script = ConsumeDeserializable<CScript>(fuzzed_data_provider);
108    if (other_script) {
109        {
110            CScript script_mut{script};
111            (void)FindAndDelete(script_mut, *other_script);
112        }
113        const std::vector<std::string> random_string_vector = ConsumeRandomLengthStringVector(fuzzed_data_provider);
114        const auto flags_rand{fuzzed_data_provider.ConsumeIntegral<script_verify_flags::value_type>()};
115        const auto flags = script_verify_flags::from_int(flags_rand) | SCRIPT_VERIFY_P2SH;
116        {
117            CScriptWitness wit;
118            for (const auto& s : random_string_vector) {
119                wit.stack.emplace_back(s.begin(), s.end());
120            }
121            (void)CountWitnessSigOps(script, *other_script, wit, flags);
122            wit.SetNull();
123        }
124    }
125
126    (void)GetOpName(ConsumeOpcodeType(fuzzed_data_provider));
127    (void)ScriptErrorString(static_cast<ScriptError>(fuzzed_data_provider.ConsumeIntegralInRange<int>(0, SCRIPT_ERR_ERROR_COUNT)));
128
129    {
130        const std::vector<uint8_t> bytes = ConsumeRandomLengthByteVector(fuzzed_data_provider);
131        CScript append_script{bytes.begin(), bytes.end()};
132        append_script << fuzzed_data_provider.ConsumeIntegral<int64_t>();
133        append_script << ConsumeOpcodeType(fuzzed_data_provider);
134        append_script << CScriptNum{fuzzed_data_provider.ConsumeIntegral<int64_t>()};
135        append_script << ConsumeRandomLengthByteVector(fuzzed_data_provider);
136    }
137
138    {
139        const CTxDestination tx_destination_1{
140            fuzzed_data_provider.ConsumeBool() ?
141                DecodeDestination(fuzzed_data_provider.ConsumeRandomLengthString()) :
142                ConsumeTxDestination(fuzzed_data_provider)};
143        const CTxDestination tx_destination_2{ConsumeTxDestination(fuzzed_data_provider)};
144        const std::string encoded_dest{EncodeDestination(tx_destination_1)};
145        const UniValue json_dest{DescribeAddress(tx_destination_1)};
146        (void)GetKeyForDestination(/*store=*/{}, tx_destination_1);
147        const CScript dest{GetScriptForDestination(tx_destination_1)};
148        const bool valid{IsValidDestination(tx_destination_1)};
149
150        if (!std::get_if<PubKeyDestination>(&tx_destination_1)) {
151            // Only try to round trip non-pubkey destinations since PubKeyDestination has no encoding
152            Assert(dest.empty() != valid);
153            Assert(tx_destination_1 == DecodeDestination(encoded_dest));
154            Assert(valid == IsValidDestinationString(encoded_dest));
155        }
156
157        (void)(tx_destination_1 < tx_destination_2);
158        if (tx_destination_1 == tx_destination_2) {
159            Assert(encoded_dest == EncodeDestination(tx_destination_2));
160            Assert(json_dest.write() == DescribeAddress(tx_destination_2).write());
161            Assert(dest == GetScriptForDestination(tx_destination_2));
162        }
163    }
164}
165

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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