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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) 2026-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 <addresstype.h>
6#include <chain.h>
7#include <consensus/amount.h>
8#include <consensus/merkle.h>
9#include <node/kernel_notifications.h>
10#include <node/mining_types.h>
11#include <primitives/block.h>
12#include <primitives/transaction.h>
13#include <pubkey.h>
14#include <script/interpreter.h>
15#include <script/script.h>
16#include <sync.h>
17#include <test/fuzz/FuzzedDataProvider.h>
18#include <test/fuzz/fuzz.h>
19#include <test/fuzz/util.h>
20#include <test/util/mining.h>
21#include <test/util/script.h>
22#include <test/util/setup_common.h>
23#include <test/util/time.h>
24#include <txmempool.h>
25#include <uint256.h>
26#include <validation.h>
27#include <validationinterface.h>
28
29#include <algorithm>
30#include <cstdint>
31#include <memory>
32#include <utility>
33#include <vector>
34
35
36namespace {
37
38TestingSetup* g_setup;
39
40/** Vector of blocks to keep references to blocks (to enable fuzzing input to pick one to build upon) */
41static std::vector<std::shared_ptr<CBlock>> g_blocks;
42/** CTxIns for spending outputs, which can be unspent, already spent, or an immature coinbase. */
43static std::vector<CTxIn> g_spend_candidate_txins;
44/** Static P2SH_OP_TRUE script */
45static const CScript P2SH_OP_TRUE = CScript() << OP_HASH160 << ToByteVector(ScriptHash(CScript() << OP_TRUE)) << OP_EQUAL;
46/** Static P2SH_OP_TRUE unlock script */
47static const CScript P2SH_OP_TRUE_UNLOCK = CScript() << MakeUCharSpan(CScript() << OP_TRUE);
48/** Static TAPROOT_OP_TRUE script and its witness */
49static CScript TAPROOT_OP_TRUE;
50static std::vector<std::vector<uint8_t>> TAPROOT_OP_TRUE_WITNESS;
51
52/**
53 * Initialize TAPROOT_OP_TRUE and TAPROOT_OP_TRUE_WITNESS static variables.
54 */
55static void InitTaprootScript()
56{
57    uint256 merkle_tree_hash = ComputeTapleafHash(TAPROOT_LEAF_TAPSCRIPT, MakeUCharSpan(CScript() << OP_TRUE));
58    uint256 internal_key{std::vector<uint8_t>(32, 1)};
59    auto res = XOnlyPubKey(internal_key).CreateTapTweak(&merkle_tree_hash);
60    Assert(res.has_value());
61    auto control = ToByteVector(internal_key);
62    control.insert(control.begin(), TAPROOT_LEAF_TAPSCRIPT | (res->second ? 1 : 0));
63
64    TAPROOT_OP_TRUE = CScript() << OP_1 << ToByteVector(res->first);
65    TAPROOT_OP_TRUE_WITNESS.clear();
66    TAPROOT_OP_TRUE_WITNESS.emplace_back(ToByteVector(CScript() << OP_TRUE));
67    TAPROOT_OP_TRUE_WITNESS.emplace_back(std::move(control));
68}
69
70/**
71 * Given a transaction and an output index, create a CTxIn that can be
72 * used to spend it.
73 */
74static CTxIn GetSpendingScript(const CTransaction& tx, uint32_t vout_index)
75{
76    Assert(vout_index < tx.vout.size());
77    const CTxOut& output = tx.vout[vout_index];
78
79    CTxIn res{COutPoint(tx.GetHash(), vout_index)};
80    if (output.scriptPubKey == P2WSH_OP_TRUE) {
81        res.scriptSig = CScript();
82        res.scriptWitness.stack.push_back(WITNESS_STACK_ELEM_OP_TRUE);
83    } else if (output.scriptPubKey == P2SH_OP_TRUE) {
84        res.scriptSig = P2SH_OP_TRUE_UNLOCK;
85    } else if (output.scriptPubKey == CScript()) {
86        res.scriptSig = CScript() << OP_TRUE;
87    } else if (output.scriptPubKey == TAPROOT_OP_TRUE) {
88        res.scriptSig = CScript();
89        res.scriptWitness.stack = TAPROOT_OP_TRUE_WITNESS;
90    }
91
92    return res;
93}
94
95/**
96 * Add a spend candidate CTxIn unless the output is unspendable.
97 */
98static void MaybeAddSpendCandidate(std::vector<CTxIn>& pool, const CTransaction& tx, uint32_t vout_index)
99{
100    Assert(vout_index < tx.vout.size());
101    if (tx.vout[vout_index].scriptPubKey.IsUnspendable()) return;
102    pool.push_back(GetSpendingScript(tx, vout_index));
103}
104
105
106/**
107 * Read the block from the BlockManager and add it to g_blocks.
108 */
109static void LoadCurrentBlock(Chainstate& chainstate, CBlockIndex* current_block)
110{
111    // Read the block from the BlockManager.
112    Assert(current_block->nHeight >= 0);
113    // Resize g_blocks if needed.
114    if (g_blocks.size() <= (size_t)current_block->nHeight) {
115        g_blocks.resize(current_block->nHeight + 1);
116    }
117
118    g_blocks[current_block->nHeight] = std::make_shared<CBlock>();
119    Assert(chainstate.m_blockman.ReadBlock(*g_blocks[current_block->nHeight], *current_block));
120
121    // Iterate all transaction outputs.
122    for (const auto& tx : g_blocks[current_block->nHeight]->vtx) {
123        for (uint32_t vout_index{0}; vout_index < tx->vout.size(); ++vout_index) {
124            MaybeAddSpendCandidate(g_spend_candidate_txins, *tx, vout_index);
125        }
126    }
127}
128
129/**
130 * Read the Chainstate object into g_blocks.
131 * Then fill g_spend_candidate_txins with inputs that can be tried by the target.
132 */
133static void LoadCurrentChain()
134{
135    // Clear existing data.
136    g_blocks.clear();
137    g_spend_candidate_txins.clear();
138
139    {
140        LOCK(::cs_main);
141        // Retrieve the current chainstate.
142        auto& chainstate = Assert(g_setup->m_node.chainman)->ActiveChainstate();
143        // Make sure it contains a valid mempool.
144        Assert(chainstate.GetMempool());
145
146        // Traverse the chain from tip to genesis.
147        auto current_block = chainstate.m_chain.Tip();
148
149        while (current_block != nullptr) {
150            LoadCurrentBlock(chainstate, current_block);
151            // Move to previous block.
152            current_block = current_block->pprev;
153        }
154    }
155
156    // Reverse the order of g_spend_candidate_txins to have them in ascending order of
157    // block height.
158    std::reverse(g_spend_candidate_txins.begin(), g_spend_candidate_txins.end());
159}
160
161
162/**
163 * Reset the chainman in the testing setup object.
164 * Mine 2*COINBASE_MATURITY blocks to have spendable UTXOs.
165 * It is called once in the initialization function.
166 */
167void ResetChainman(TestingSetup& setup)
168{
169    SetMockTime(setup.m_node.chainman->GetParams().GenesisBlock().Time());
170    setup.m_node.chainman.reset();
171    setup.m_node.notifications->m_shutdown_on_fatal_error = false;
172    setup.m_make_chainman();
173    setup.LoadVerifyActivateChainstate();
174
175    for (int i = 0; i < 2 * COINBASE_MATURITY; i++) {
176        node::BlockCreateOptions options;
177        options.coinbase_output_script = P2WSH_OP_TRUE;
178        MineBlock(setup.m_node, options);
179    }
180    setup.m_node.validation_signals->SyncWithValidationInterfaceQueue();
181}
182
183/** Create additional transactions in the mempool that spend
184 * coins from mature blocks. Otherwise the mined chain only contains
185 * coinbase transactions.
186 */
187void AddExtraTxsToMempool(TestingSetup& setup)
188{
189    Assert(setup.m_node.chainman->ActiveChainstate().GetMempool()->size() == 0);
190    for (size_t i = 1; i <= 10; i++) {
191        CMutableTransaction ctx;
192        ctx.version = CTransaction::CURRENT_VERSION;
193        ctx.vin.resize(1);
194        // CTxIn is spendable as g_spend_candidate_txins comes from early blocks whose
195        // coinbases are mature.
196        ctx.vin[0] = g_spend_candidate_txins[i];
197        ctx.vout.resize(4);
198        // Arbitrarily create various outputs of different kinds in the same tx.
199        // P2WSH
200        ctx.vout[0].nValue = CAmount(15 * COIN);
201        ctx.vout[0].scriptPubKey = P2WSH_OP_TRUE;
202        // P2SH
203        ctx.vout[1].nValue = CAmount(15 * COIN);
204        ctx.vout[1].scriptPubKey = P2SH_OP_TRUE;
205        // Taproot
206        ctx.vout[2].nValue = CAmount(10 * COIN);
207        ctx.vout[2].scriptPubKey = TAPROOT_OP_TRUE;
208        // Empty script
209        ctx.vout[3].nValue = CAmount(10 * COIN);
210        ctx.vout[3].scriptPubKey = CScript();
211
212        LOCK(::cs_main);
213        // Add transaction to the mempool.
214        const MempoolAcceptResult ctx_result = setup.m_node.chainman->ProcessTransaction(MakeTransactionRef(ctx));
215        Assert(ctx_result.m_result_type == MempoolAcceptResult::ResultType::VALID);
216
217        Assert(setup.m_node.chainman->ActiveChainstate().GetMempool()->size() == i);
218        // Force the mempool to select this transaction even though its fee is zero.
219        setup.m_node.chainman->ActiveChainstate().GetMempool()->PrioritiseTransaction(ctx.GetHash(), COIN);
220    }
221}
222
223/** Initialize the chain for this target. */
224static void initialize_connect_block()
225{
226    // Instantiate REGTEST chain.
227    static auto testing_setup = MakeNoLogFileContext<TestingSetup>(
228        /*chain_type=*/ChainType::REGTEST, TestOpts{
229                                               .extra_args = {
230                                                   "-minrelaytxfee=0",
231                                                   "-acceptnonstdtxn",
232                                               },
233                                           });
234    g_setup = testing_setup.get();
235
236    // Reset the chainman in the testing setup object.
237    ResetChainman(*g_setup);
238
239    // Initialize Taproot script declared as static variables.
240    InitTaprootScript();
241
242    // Load the chain mined in ResetChainman in global variables g_blocks and
243    // g_spend_candidate_txins, to make them available to pick by the target.
244    LoadCurrentChain();
245
246    // Prepare multiple transactions for block 201. They spend coins
247    // from various coinbases that are now mature enough.
248    AddExtraTxsToMempool(*g_setup);
249    // Mine block 201, which contains the transactions added to the mempool.
250    node::BlockCreateOptions options;

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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