Function descriptorprocesspsbt

src/rpc/rawtransaction.cpp:2067–2150

}

RPCMethod descriptorprocesspsbt()
{
    return RPCMethod{
        "descriptorprocesspsbt",
        "Update all segwit inputs in a PSBT with information from output descriptors, the UTXO set or the mempool. \n"
                "Then, sign the inputs we are able to with information from the output descriptors. ",
                {
                    {"psbt", RPCArg::Type::STR, RPCArg::Optional::NO, "The transaction base64 string"},
                    {"descriptors", RPCArg::Type::ARR, RPCArg::Optional::NO, "An array of either strings or objects", {
                        {"", RPCArg::Type::STR, RPCArg::Optional::OMITTED, "An output descriptor"},
                        {"", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED, "An object with an output descriptor and extra information", {
                             {"desc", RPCArg::Type::STR, RPCArg::Optional::NO, "An output descriptor"},
                             {"range", RPCArg::Type::RANGE, RPCArg::Default{1000}, "Up to what index HD chains should be explored (either end or [begin,end])"},
                        }},
                    }},
                    {"sighashtype", RPCArg::Type::STR, RPCArg::Default{"DEFAULT for Taproot, ALL otherwise"}, "The signature hash type to sign with if not specified by the PSBT. Must be one of\n"
            "       \"DEFAULT\"\n"
            "       \"ALL\"\n"
            "       \"NONE\"\n"
            "       \"SINGLE\"\n"
            "       \"ALL|ANYONECANPAY\"\n"
            "       \"NONE|ANYONECANPAY\"\n"
            "       \"SINGLE|ANYONECANPAY\""},
                    {"bip32derivs", RPCArg::Type::BOOL, RPCArg::Default{true}, "Include BIP 32 derivation paths for public keys if we know them"},
                    {"finalize", RPCArg::Type::BOOL, RPCArg::Default{true}, "Also finalize inputs if possible"},
                },
                RPCResult{
                    RPCResult::Type::OBJ, "", "",
                    {
                        {RPCResult::Type::STR, "psbt", "The base64-encoded partially signed transaction"},
                        {RPCResult::Type::BOOL, "complete", "If the transaction has a complete set of signatures"},
                        {RPCResult::Type::STR_HEX, "hex", /*optional=*/true, "The hex-encoded network transaction if complete"},
                    }
                },
                RPCExamples{
                    HelpExampleCli("descriptorprocesspsbt", "\"psbt\" \"[\\\"descriptor1\\\", \\\"descriptor2\\\"]\"") +
                    HelpExampleCli("descriptorprocesspsbt", "\"psbt\" \"[{\\\"desc\\\":\\\"mydescriptor\\\", \\\"range\\\":21}]\"")
                },
        [](const RPCMethod& self, const JSONRPCRequest& request) -> UniValue
{
    // Add descriptor information to a signing provider
    FlatSigningProvider provider;

    auto descs = request.params[1].get_array();
    for (size_t i = 0; i < descs.size(); ++i) {
        EvalDescriptorStringOrObject(descs[i], provider, /*expand_priv=*/true);
    }

    std::optional<int> sighash_type = ParseSighashString(request.params[2]);
    bool bip32derivs = request.params[3].isNull() ? true : request.params[3].get_bool();
    bool finalize = request.params[4].isNull() ? true : request.params[4].get_bool();

    const PartiallySignedTransaction& psbtx = ProcessPSBT(
        request.params[0].get_str(),
        request.context,
        HidingSigningProvider(&provider, /*hide_secret=*/false, !bip32derivs),
        sighash_type,
        finalize);