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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.cpp

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36,168 bytes · SHA-256 34d2216140d63ff0… · View upstream ↗

751        out_sigdata->missing_sigs = sigdata.missing_sigs;
752        out_sigdata->missing_redeem_script = sigdata.missing_redeem_script;
753        out_sigdata->missing_witness_script = sigdata.missing_witness_script;
754    }
755
756    if (!sig_complete) return util::Unexpected{PSBTError::INCOMPLETE};
757    return {};
758}
759
760void RemoveUnnecessaryTransactions(PartiallySignedTransaction& psbtx)
761{
762    // Figure out if any non_witness_utxos should be dropped
763    std::vector<unsigned int> to_drop;
764    for (unsigned int i = 0; i < psbtx.inputs.size(); ++i) {
765        const auto& input = psbtx.inputs.at(i);
766        int wit_ver;
767        std::vector<unsigned char> wit_prog;
768        if (input.witness_utxo.IsNull() || !input.witness_utxo.scriptPubKey.IsWitnessProgram(wit_ver, wit_prog)) {
769            // There's a non-segwit input, so we cannot drop any non_witness_utxos
770            to_drop.clear();
771            break;
772        }
773        if (wit_ver == 0) {
774            // Segwit v0, so we cannot drop any non_witness_utxos
775            to_drop.clear();
776            break;
777        }
778        // non_witness_utxos cannot be dropped if the sighash type includes SIGHASH_ANYONECANPAY
779        // Since callers should have called SignPSBTInput which updates the sighash type in the PSBT, we only
780        // need to look at that field. If it is not present, then we can assume SIGHASH_DEFAULT or SIGHASH_ALL.
781        if (input.sighash_type != std::nullopt && (*input.sighash_type & 0x80) == SIGHASH_ANYONECANPAY) {
782            to_drop.clear();
783            break;
784        }
785
786        if (input.non_witness_utxo) {
787            to_drop.push_back(i);
788        }
789    }
790
791    // Drop the non_witness_utxos that we can drop
792    for (unsigned int i : to_drop) {
793        psbtx.inputs.at(i).non_witness_utxo = nullptr;
794    }
795}
796
797bool FinalizePSBT(PartiallySignedTransaction& psbtx)
798{
799    // Finalize input signatures -- in case we have partial signatures that add up to a complete
800    //   signature, but have not combined them yet (e.g. because the combiner that created this
801    //   PartiallySignedTransaction did not understand them), this will combine them into a final
802    //   script.
803    bool complete = true;
804    std::optional<PrecomputedTransactionData> txdata_res = PrecomputePSBTData(psbtx);
805    if (!txdata_res) {
806        return false;
807    }
808    const PrecomputedTransactionData& txdata = *txdata_res;
809    for (unsigned int i = 0; i < psbtx.inputs.size(); ++i) {
810        PSBTInput& input = psbtx.inputs.at(i);
811        const auto sign_result = SignPSBTInput(DUMMY_SIGNING_PROVIDER, psbtx, i, &txdata, {.sighash_type = input.sighash_type, .finalize = true}, /*out_sigdata=*/nullptr);
812        complete &= sign_result.has_value();
813    }
814
815    return complete;
816}
817
818bool FinalizeAndExtractPSBT(PartiallySignedTransaction& psbtx, CMutableTransaction& result)
819{
820    // It's not safe to extract a PSBT that isn't finalized, and there's no easy way to check
821    //   whether a PSBT is finalized without finalizing it, so we just do this.
822    if (!FinalizePSBT(psbtx)) {
823        return false;
824    }
825
826    std::optional<CMutableTransaction> unsigned_tx = psbtx.GetUnsignedTx();
827    if (!unsigned_tx) {
828        return false;
829    }
830    result = *unsigned_tx;
831    for (unsigned int i = 0; i < result.vin.size(); ++i) {
832        result.vin[i].scriptSig = psbtx.inputs[i].final_script_sig;
833        result.vin[i].scriptWitness = psbtx.inputs[i].final_script_witness;
834    }
835    return true;
836}
837
838std::optional<PartiallySignedTransaction> CombinePSBTs(const std::vector<PartiallySignedTransaction>& psbtxs)
839{
840    PartiallySignedTransaction out = psbtxs[0]; // Copy the first one
841
842    // Merge
843    for (auto it = std::next(psbtxs.begin()); it != psbtxs.end(); ++it) {
844        if (!out.Merge(*it)) {
845            return std::nullopt;
846        }
847    }
848    return out;
849}
850
851std::string PSBTRoleName(PSBTRole role) {
852    switch (role) {
853    case PSBTRole::CREATOR: return "creator";
854    case PSBTRole::UPDATER: return "updater";
855    case PSBTRole::SIGNER: return "signer";
856    case PSBTRole::FINALIZER: return "finalizer";
857    case PSBTRole::EXTRACTOR: return "extractor";
858    } // no default case, so the compiler can warn about missing cases
859    assert(false);
860}
861
862util::Result<PartiallySignedTransaction> DecodeBase64PSBT(const std::string& base64_tx)
863{
864    auto tx_data = DecodeBase64(base64_tx);
865    if (!tx_data) {
866        return util::Error{Untranslated("invalid base64")};
867    }
868    return DecodeRawPSBT(MakeByteSpan(*tx_data));
869}
870
871util::Result<PartiallySignedTransaction> DecodeRawPSBT(std::span<const std::byte> tx_data)
872{
873    SpanReader ss_data{tx_data};
874    try {
875        PartiallySignedTransaction psbt(deserialize, ss_data);
876        if (!ss_data.empty()) {
877            return util::Error{Untranslated("extra data after PSBT")};
878        }
879        return psbt;
880    } catch (const std::exception& e) {
881        return util::Error{Untranslated(e.what())};
882    }
883}
884
885uint32_t PartiallySignedTransaction::GetVersion() const
886{
887    if (m_version != std::nullopt) {
888        return *m_version;
889    }
890    return 0;
891}
892

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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 4

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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