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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.

bitcoin / bitcoinstable

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▤ addition_overflow.cpp

▤ base_encode_decode.cpp

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▤ FuzzedDataProvider.h

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▤ signature_checker.cpp

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▤ validation_load_mempool.cpp

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▤ blockchain_tests.cpp

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▤ txpackage_tests.cpp

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▤ uint256_tests.cpp

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bitcoin / src / test / fuzz / cmpctblock.cpp

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251            // Add txns from the mempool. Since we do not include parents, it may be an invalid block.
252            size_t num_txns = fuzzed_data_provider.ConsumeIntegralInRange<size_t>(1, mempool_size);
253            size_t random_idx = fuzzed_data_provider.ConsumeIntegralInRange<size_t>(0, mempool_size - 1);
254
255            LOCK(mempool.cs);
256            for (size_t i = random_idx; i < random_idx + num_txns; ++i) {
257                CTransactionRef mempool_tx = mempool.txns_randomized[i % mempool_size].second->GetSharedTx();
258                block->vtx.push_back(mempool_tx);
259            }
260        }
261
262        // Create and add (possibly invalid) txns that are not in the mempool.
263        if (fuzzed_data_provider.ConsumeBool()) {
264            size_t new_txns = fuzzed_data_provider.ConsumeIntegralInRange<size_t>(1, 10);
265            for (size_t i = 0; i < new_txns; ++i) {
266                CTransactionRef non_mempool_tx = create_tx();
267                block->vtx.push_back(non_mempool_tx);
268            }
269        }
270
271        CBlockIndex* pindexPrev{WITH_LOCK(::cs_main, return chainman.m_blockman.LookupBlockIndex(prev))};
272        chainman.GenerateCoinbaseCommitment(*block, pindexPrev);
273
274        bool mutated;
275        block->hashMerkleRoot = BlockMerkleRoot(*block, &mutated);
276        FinalizeHeader(*block, chainman);
277
278        BlockInfo block_info;
279        block_info.block = block;
280        block_info.hash = block->GetHash();
281        block_info.height = height;
282
283        return block_info;
284    };
285
286    LIMITED_WHILE (fuzzed_data_provider.ConsumeBool(), 1000) {
287        CSerializedNetMsg net_msg;
288        bool sent_net_msg = true;
289        bool requested_hb = false;
290        bool sent_sendcmpct = false;
291        bool valid_sendcmpct = false;
292
293        CallOneOf(
294            fuzzed_data_provider,
295            [&]() {
296                // Send a compact block.
297                std::shared_ptr<CBlock> cblock;
298
299                // Pick an existing block or create a new block.
300                if (fuzzed_data_provider.ConsumeBool() && info.size() != 0) {
301                    size_t index = fuzzed_data_provider.ConsumeIntegralInRange<size_t>(0, info.size() - 1);
302                    cblock = info[index].block;
303                } else {
304                    BlockInfo block_info = create_block();
305                    cblock = block_info.block;
306                    info.push_back(block_info);
307                }
308
309                uint64_t nonce = fuzzed_data_provider.ConsumeIntegral<uint64_t>();
310                FuzzedCBlockHeaderAndShortTxIDs cmpctblock(*cblock, nonce);
311
312                if (fuzzed_data_provider.ConsumeBool()) {
313                    CBlockHeaderAndShortTxIDs base_cmpctblock = cmpctblock;
314                    net_msg = NetMsg::Make(NetMsgType::CMPCTBLOCK, base_cmpctblock);
315                    return;
316                }
317
318                int prev_idx = 0;
319                size_t num_erased = 1;
320                size_t num_txs = cblock->vtx.size();
321
322                for (size_t i = 0; i < num_txs; ++i) {
323                    if (i == 0) {
324                        // Handle the coinbase specially. We either keep it prefilled or remove it.
325                        if (fuzzed_data_provider.ConsumeBool()) continue;
326
327                        // Remove the prefilled coinbase.
328                        num_erased = 0;
329                        uint64_t coinbase_shortid = cmpctblock.GetShortID(cblock->vtx[0]->GetWitnessHash());
330                        cmpctblock.RemoveCoinbasePrefill();
331                        cmpctblock.InsertCoinbaseShortTxID(coinbase_shortid);
332                        continue;
333                    }
334
335                    if (fuzzed_data_provider.ConsumeBool()) continue;
336
337                    uint16_t prefill_idx = num_erased == 0 ? i : i - prev_idx - 1;
338                    prev_idx = i;
339                    CTransactionRef txref = cblock->vtx[i];
340                    PrefilledTransaction prefilledtx = {/*index=*/prefill_idx, txref};
341                    cmpctblock.AddPrefilledTx(std::move(prefilledtx));
342
343                    // Remove from shorttxids since we've prefilled. Subtract however many txs have been prefilled.
344                    cmpctblock.EraseShortTxIDs(i - num_erased);
345                    ++num_erased;
346                }
347
348                assert(cmpctblock.PrefilledTxCount() + cmpctblock.ShortTxIDCount() == num_txs);
349
350                CBlockHeaderAndShortTxIDs base_cmpctblock = cmpctblock;
351                net_msg = NetMsg::Make(NetMsgType::CMPCTBLOCK, base_cmpctblock);
352            },
353            [&]() {
354                // Send a blocktxn message for an existing block (if one exists).
355                size_t num_blocks = info.size();
356                if (num_blocks == 0) {
357                    sent_net_msg = false;
358                    return;
359                }
360
361                // Fetch an existing block and randomly choose transactions to send over.
362                size_t index = fuzzed_data_provider.ConsumeIntegralInRange<size_t>(0, num_blocks - 1);
363                const BlockInfo& block_info = info[index];
364                BlockTransactions block_txn;
365                block_txn.blockhash = block_info.hash;
366                std::shared_ptr<CBlock> cblock = block_info.block;
367
368                for (size_t i = 0; i < cblock->vtx.size(); i++) {
369                    if (fuzzed_data_provider.ConsumeBool()) continue;
370
371                    block_txn.txn.push_back(cblock->vtx[i]);
372                }
373
374                net_msg = NetMsg::Make(NetMsgType::BLOCKTXN, block_txn);
375            },
376            [&]() {
377                // Send a headers message for an existing block (if one exists).
378                size_t num_blocks = info.size();
379                if (num_blocks == 0) {
380                    sent_net_msg = false;
381                    return;
382                }
383
384                // Choose an existing block and send a HEADERS message for it.
385                size_t index = fuzzed_data_provider.ConsumeIntegralInRange<size_t>(0, num_blocks - 1);
386                CBlock block = *info[index].block;
387                block.vtx.clear(); // No tx in HEADERS.
388                std::vector<CBlock> headers;
389                headers.emplace_back(block);
390
391                net_msg = NetMsg::Make(NetMsgType::HEADERS, TX_WITH_WITNESS(headers));
392            },
393            [&]() {
394                // Send a sendcmpct message, optionally setting hb mode.
395                bool hb = fuzzed_data_provider.ConsumeBool();
396                uint64_t version{fuzzed_data_provider.ConsumeBool() ? CMPCTBLOCKS_VERSION : fuzzed_data_provider.ConsumeIntegral<uint64_t>()};
397                net_msg = NetMsg::Make(NetMsgType::SENDCMPCT, /*high_bandwidth=*/hb, /*version=*/version);
398                requested_hb = hb;
399                sent_sendcmpct = true;
400                valid_sendcmpct = version == CMPCTBLOCKS_VERSION;
401            },
402            [&]() {
403                // Mine a block, but don't send it.
404                BlockInfo block_info = create_block();
405                info.push_back(block_info);
406                sent_net_msg = false;
407            },
408            [&]() {
409                // Send a transaction.
410                CTransactionRef tx = create_tx();
411                net_msg = NetMsg::Make(NetMsgType::TX, TX_WITH_WITNESS(*tx));
412            },
413            [&]() {
414                // Set mock time randomly or to tip's time.
415                if (fuzzed_data_provider.ConsumeBool()) {
416                    node_clock.set(ConsumeTime(fuzzed_data_provider));
417                } else {
418                    const NodeSeconds tip_time = WITH_LOCK(::cs_main, return chainman.ActiveChain().Tip()->Time());
419                    node_clock.set(tip_time);
420                }
421
422                sent_net_msg = false;
423            });
424
425        if (!sent_net_msg) {
426            continue;
427        }
428
429        CNode& random_node = *PickValue(fuzzed_data_provider, peers);
430        connman.FlushSendBuffer(random_node);
431        (void)connman.ReceiveMsgFrom(random_node, std::move(net_msg));
432
433        bool more_work{true};
434        while (more_work) {
435            random_node.fPauseSend = false;
436
437            more_work = connman.ProcessMessagesOnce(random_node);
438            peerman->SendMessages(random_node);
439        }
440
441        std::vector<CNodeStats> stats;
442        connman.GetNodeStats(stats);
443
444        // We should have at maximum 3 HB peers.
445        int num_hb = 0;
446        for (const CNodeStats& stat : stats) {
447            if (stat.m_bip152_highbandwidth_to) {
448                // HB peers cannot be feelers or other "special" connections (besides addr-fetch).
449                CNode* hb_peer = peers[stat.nodeid];
450                if (!hb_peer->fDisconnect) num_hb += 1;
451                assert(hb_peer->IsInboundConn() || hb_peer->IsOutboundOrBlockRelayConn() || hb_peer->IsManualConn() || hb_peer->IsAddrFetchConn());
452            }
453        }
454        assert(num_hb <= 3);
455
456        if (sent_sendcmpct && !random_node.fDisconnect) {
457            // If the fuzzer sent SENDCMPCT with proper version, check the node's state matches what it sent.
458            const CNodeStats& random_node_stats = stats[random_node.GetId()];
459            if (valid_sendcmpct) assert(random_node_stats.m_bip152_highbandwidth_from == requested_hb);
460        }
461    }
462
463    setup->m_node.validation_signals->SyncWithValidationInterfaceQueue();
464    setup->m_node.validation_signals->UnregisterAllValidationInterfaces();
465    connman.StopNodes();
466
467    const size_t end_index_size{WITH_LOCK(chainman.GetMutex(), return chainman.BlockIndex().size())};
468    const uint64_t end_sequence{WITH_LOCK(mempool.cs, return mempool.GetSequence())};
469
470    if (initial_index_size != end_index_size || initial_sequence != end_sequence) {
471        MakeRandDeterministicDANGEROUS(uint256::ZERO);
472        g_mature_coinbase = ResetChainmanAndMempool(*g_setup, node_clock);
473    }
474}
475

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440 guided files · 2,580 pending. Guides cover key sections, not every line.

cmake/bitcoin-build-config.h.in src/consensus/amount.h src/consensus/consensus.h src/primitives/block.h src/primitives/transaction.h src/crypto/sha256.h src/util/moneystr.h src/clientversion.h src/uint256.h src/script/script.h src/policy/policy.h CMakeLists.txt README.md COPYING src/consensus/tx_check.cpp src/consensus/tx_verify.cpp src/consensus/merkle.cpp src/pow.cpp src/validation.cpp src/script/interpreter.cpp src/script/solver.cpp src/script/sign.cpp src/key_io.cpp src/net.cpp src/net_processing.cpp src/netaddress.cpp src/protocol.h src/wallet/wallet.cpp src/wallet/spend.cpp

← Previous 250 linesCode page 2

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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