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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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bitcoin / src / psbt.h

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70,656 bytes · SHA-256 cc7139b01872981a… · View upstream ↗

1251    std::set<PSBTProprietary> m_proprietary;
1252
1253    uint32_t tx_version;
1254    std::optional<uint32_t> fallback_locktime;
1255
1256    uint32_t GetVersion() const;
1257
1258    /** Merge psbt into this. The two psbts must have the same underlying CTransaction (i.e. the
1259      * same actual Bitcoin transaction.) Returns true if the merge succeeded, false otherwise. */
1260    [[nodiscard]] bool Merge(const PartiallySignedTransaction& psbt);
1261    /** Merge the global xpubs of psbt into this, keeping the existing origin for an xpub
1262      * seen again with a different one, as the serialized records are keyed by xpub. */
1263    void MergeGlobalXPubs(const PartiallySignedTransaction& psbt);
1264    bool AddInput(const PSBTInput& psbtin);
1265    bool AddOutput(const PSBTOutput& psbtout);
1266    std::optional<uint32_t> ComputeTimeLock() const;
1267    std::optional<CMutableTransaction> GetUnsignedTx() const;
1268    std::optional<Txid> GetUniqueID() const;
1269    explicit PartiallySignedTransaction(const CMutableTransaction& tx, uint32_t version = 2);
1270
1271    template <typename Stream>
1272    inline void Serialize(Stream& s) const {
1273
1274        // magic bytes
1275        s << PSBT_MAGIC_BYTES;
1276
1277        if (GetVersion() < 2) {
1278            // unsigned tx flag
1279            SerializeToVector(s, CompactSizeWriter(PSBT_GLOBAL_UNSIGNED_TX));
1280
1281            // Write serialized tx to a stream
1282            SerializeToVector(s, TX_NO_WITNESS(*GetUnsignedTx()));
1283        }
1284
1285        // Write xpubs
1286        for (const auto& xpub_pair : m_xpubs) {
1287            for (const auto& xpub : xpub_pair.second) {
1288                unsigned char ser_xpub[BIP32_EXTKEY_WITH_VERSION_SIZE];
1289                xpub.EncodeWithVersion(ser_xpub);
1290                // Note that the serialization swaps the key and value
1291                // The xpub is the key (for uniqueness) while the path is the value
1292                SerializeToVector(s, PSBT_GLOBAL_XPUB, ser_xpub);
1293                SerializeHDKeypath(s, xpub_pair.first);
1294            }
1295        }
1296
1297        if (GetVersion() >= 2) {
1298            // Write PSBTv2 tx version, locktime, counts, etc.
1299            SerializeToVector(s, CompactSizeWriter(PSBT_GLOBAL_TX_VERSION));
1300            SerializeToVector(s, tx_version);
1301            if (fallback_locktime != std::nullopt) {
1302                SerializeToVector(s, CompactSizeWriter(PSBT_GLOBAL_FALLBACK_LOCKTIME));
1303                SerializeToVector(s, *fallback_locktime);
1304            }
1305
1306            SerializeToVector(s, CompactSizeWriter(PSBT_GLOBAL_INPUT_COUNT));
1307            SerializeToVector(s, CompactSizeWriter(inputs.size()));
1308            SerializeToVector(s, CompactSizeWriter(PSBT_GLOBAL_OUTPUT_COUNT));
1309            SerializeToVector(s, CompactSizeWriter(outputs.size()));
1310
1311            if (m_tx_modifiable != std::nullopt) {
1312                SerializeToVector(s, CompactSizeWriter(PSBT_GLOBAL_TX_MODIFIABLE));
1313                SerializeToVector(s, static_cast<uint8_t>(m_tx_modifiable->to_ulong()));
1314            }
1315        }
1316
1317        // PSBT version
1318        if (GetVersion() > 0) {
1319            SerializeToVector(s, CompactSizeWriter(PSBT_GLOBAL_VERSION));
1320            SerializeToVector(s, *m_version);
1321        }
1322
1323        // Write proprietary things
1324        for (const auto& entry : m_proprietary) {
1325            s << entry.key;
1326            s << entry.value;
1327        }
1328
1329        // Write the unknown things
1330        for (auto& entry : unknown) {
1331            s << entry.first;
1332            s << entry.second;
1333        }
1334
1335        // Separator
1336        s << PSBT_SEPARATOR;
1337
1338        // Write inputs
1339        for (const PSBTInput& input : inputs) {
1340            s << input;
1341        }
1342        // Write outputs
1343        for (const PSBTOutput& output : outputs) {
1344            s << output;
1345        }
1346    }
1347
1348
1349    template <typename Stream>
1350    inline void Unserialize(Stream& s) {
1351        // Read the magic bytes
1352        uint8_t magic[5];
1353        s >> magic;
1354        if (!std::equal(magic, magic + 5, PSBT_MAGIC_BYTES)) {
1355            throw std::ios_base::failure("Invalid PSBT magic bytes");
1356        }
1357
1358        // Used for duplicate key detection
1359        std::set<std::vector<unsigned char>> key_lookup;
1360
1361        // Read global data
1362        bool found_sep = false;
1363        std::optional<CMutableTransaction> tx;
1364        uint64_t input_count = 0;
1365        uint64_t output_count = 0;
1366        bool found_input_count = false;
1367        bool found_output_count = false;
1368        bool found_tx_version = false;
1369        bool found_fallback_locktime = false;
1370        while(!s.empty()) {
1371            // Read the key of format "<keylen><keytype><keydata>" after which
1372            // "key" will contain "<keytype><keydata>"
1373            std::vector<unsigned char> key;
1374            s >> key;
1375
1376            // the key is empty if that was actually a separator byte
1377            // This is a special case for key lengths 0 as those are not allowed (except for separator)
1378            if (key.empty()) {
1379                found_sep = true;
1380                break;
1381            }
1382
1383            // Duplicate keys are not permitted
1384            if (!key_lookup.emplace(key).second) {
1385                throw std::ios_base::failure(tfm::format("Duplicate Key, global key \"%s\" already provided", HexStr(key)));
1386            }
1387
1388            // "skey" is used so that "key" is unchanged after reading keytype below
1389            SpanReader skey{key};
1390            // keytype is of the format compact size uint at the beginning of "key"
1391            uint64_t type = ReadCompactSize(skey);
1392
1393            // Do stuff based on keytype "type", i.e., key checks, reading values of the
1394            // format "<valuelen><valuedata>" from the stream "s", and value checks
1395            switch(type) {
1396                case PSBT_GLOBAL_UNSIGNED_TX:
1397                {
1398                    ExpectedKeySize("Global Unsigned TX", key, 1);
1399                    // Set the stream to serialize with non-witness since this should always be non-witness
1400                    tx.emplace();
1401                    UnserializeFromVector(s, TX_NO_WITNESS(*tx));
1402                    // Make sure that all scriptSigs and scriptWitnesses are empty
1403                    for (const CTxIn& txin : tx->vin) {
1404                        if (!txin.scriptSig.empty() || !txin.scriptWitness.IsNull()) {
1405                            throw std::ios_base::failure("Unsigned tx does not have empty scriptSigs and scriptWitnesses.");
1406                        }
1407                    }
1408                    tx_version = tx->version;
1409                    fallback_locktime = tx->nLockTime;
1410                    // Set the input and output counts
1411                    input_count = tx->vin.size();
1412                    output_count = tx->vout.size();
1413                    break;
1414                }
1415                case PSBT_GLOBAL_TX_VERSION:
1416                {
1417                    ExpectedKeySize("Global Transaction Version", key, 1);
1418                    UnserializeFromVector(s, tx_version);
1419                    found_tx_version = true;
1420                    break;
1421                }
1422                case PSBT_GLOBAL_FALLBACK_LOCKTIME:
1423                {
1424                    ExpectedKeySize("Global Fallback Locktime", key, 1);
1425                    fallback_locktime.emplace();
1426                    UnserializeFromVector(s, *fallback_locktime);
1427                    found_fallback_locktime = true;
1428                    break;
1429                }
1430                case PSBT_GLOBAL_INPUT_COUNT:
1431                {
1432                    ExpectedKeySize("Global Input Count", key, 1);
1433                    CompactSizeReader reader(input_count);
1434                    UnserializeFromVector(s, reader);
1435                    found_input_count = true;
1436                    break;
1437                }
1438                case PSBT_GLOBAL_OUTPUT_COUNT:
1439                {
1440                    ExpectedKeySize("Global Output Count", key, 1);
1441                    CompactSizeReader reader(output_count);
1442                    UnserializeFromVector(s, reader);
1443                    found_output_count = true;
1444                    break;
1445                }
1446                case PSBT_GLOBAL_TX_MODIFIABLE:
1447                {
1448                    ExpectedKeySize("Global TX Modifiable Flags", key, 1);
1449                    uint8_t tx_mod;
1450                    UnserializeFromVector(s, tx_mod);
1451                    m_tx_modifiable.emplace(tx_mod);
1452                    break;
1453                }
1454                case PSBT_GLOBAL_XPUB:
1455                {
1456                    ExpectedKeySize("Global XPUB", key, BIP32_EXTKEY_WITH_VERSION_SIZE + 1);
1457                    // Read in the xpub from key
1458                    CExtPubKey xpub;
1459                    xpub.DecodeWithVersion(&key.data()[1]);
1460                    if (!xpub.pubkey.IsFullyValid()) {
1461                       throw std::ios_base::failure("Invalid pubkey");
1462                    }
1463                    // Read in the keypath from stream
1464                    KeyOriginInfo keypath;
1465                    DeserializeHDKeypath(s, keypath);
1466
1467                    // Note that we store these swapped to make searches faster.
1468                    // Serialization uses xpub -> keypath to enqure key uniqueness
1469                    if (!m_xpubs.contains(keypath)) {
1470                        // Make a new set to put the xpub in
1471                        m_xpubs[keypath] = {xpub};
1472                    } else {
1473                        // Insert xpub into existing set
1474                        m_xpubs[keypath].insert(xpub);
1475                    }
1476                    break;
1477                }
1478                case PSBT_GLOBAL_VERSION:
1479                {
1480                    ExpectedKeySize("Global PSBT Version", key, 1);
1481                    uint32_t v;
1482                    UnserializeFromVector(s, v);
1483                    m_version = v;
1484                    if (*m_version > PSBT_HIGHEST_VERSION) {
1485                        throw std::ios_base::failure("Unsupported version number");
1486                    }
1487                    break;
1488                }
1489                case PSBT_GLOBAL_PROPRIETARY:
1490                {
1491                    PSBTProprietary this_prop;
1492                    skey >> this_prop.identifier;
1493                    this_prop.subtype = ReadCompactSize(skey);
1494                    this_prop.key = key;
1495
1496                    s >> this_prop.value;
1497                    m_proprietary.insert(this_prop);
1498                    break;
1499                }
1500                // Unknown stuff

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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 6Next 250 lines →

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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