misc.cpp

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// Copyright (c) 2010 Satoshi Nakamoto
// Copyright (c) 2009-2016 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include <chainparams.h>
#include <config.h>
#include <httpserver.h>
#include <interfaces/chain.h>
#include <key_io.h>
#include <logging.h>
#include <node/context.h>
#include <outputtype.h>
#include <rpc/blockchain.h>
#include <rpc/server.h>
#include <rpc/util.h>
#include <scheduler.h>
#include <script/descriptor.h>
#include <util/check.h>
#include <util/message.h> // For MessageSign(), MessageVerify()
#include <util/ref.h>
#include <util/strencodings.h>
#include <util/system.h>

#include <univalue.h>

#include <cstdint>
#include <tuple>
#ifdef HAVE_MALLOC_INFO
#include <malloc.h>
#endif

static UniValue validateaddress(const Config &config,
                                const JSONRPCRequest &request) {
    RPCHelpMan{
        "validateaddress",
        "Return information about the given bitcoin address.\n",
        {
            {"address", RPCArg::Type::STR, RPCArg::Optional::NO,
             "The bitcoin address to validate"},
        },
        RPCResult{
            RPCResult::Type::OBJ,
            "",
            "",
            {
                {RPCResult::Type::BOOL, "isvalid",
                 "If the address is valid or not. If not, this is the only "
                 "property returned."},
                {RPCResult::Type::STR, "address",
                 "The bitcoin address validated"},
                {RPCResult::Type::STR_HEX, "scriptPubKey",
                 "The hex-encoded scriptPubKey generated by the address"},
                {RPCResult::Type::BOOL, "isscript", "If the key is a script"},
            }},
        RPCExamples{HelpExampleCli("validateaddress", EXAMPLE_ADDRESS) +
                    HelpExampleRpc("validateaddress", EXAMPLE_ADDRESS)},
    }
        .Check(request);

    CTxDestination dest =
        DecodeDestination(request.params[0].get_str(), config.GetChainParams());
    bool isValid = IsValidDestination(dest);

    UniValue ret(UniValue::VOBJ);
    ret.pushKV("isvalid", isValid);

    if (isValid) {
        if (ret["address"].isNull()) {
            std::string currentAddress = EncodeDestination(dest, config);
            ret.pushKV("address", currentAddress);

            CScript scriptPubKey = GetScriptForDestination(dest);
            ret.pushKV("scriptPubKey",
                       HexStr(scriptPubKey.begin(), scriptPubKey.end()));

            UniValue detail = DescribeAddress(dest);
            ret.pushKVs(detail);
        }
    }
    return ret;
}

static UniValue createmultisig(const Config &config,
                               const JSONRPCRequest &request) {
    RPCHelpMan{
        "createmultisig",
        "Creates a multi-signature address with n signature of m keys "
        "required.\n"
        "It returns a json object with the address and redeemScript.\n",
        {
            {"nrequired", RPCArg::Type::NUM, RPCArg::Optional::NO,
             "The number of required signatures out of the n keys."},
            {"keys",
             RPCArg::Type::ARR,
             RPCArg::Optional::NO,
             "The hex-encoded public keys.",
             {
                 {"key", RPCArg::Type::STR_HEX, RPCArg::Optional::OMITTED,
                  "The hex-encoded public key"},
             }},
        },
        RPCResult{
            RPCResult::Type::OBJ,
            "",
            "",
            {
                {RPCResult::Type::STR, "address",
                 "The value of the new multisig address."},
                {RPCResult::Type::STR_HEX, "redeemScript",
                 "The string value of the hex-encoded redemption script."},
                {RPCResult::Type::STR, "descriptor",
                 "The descriptor for this multisig"},
            }},
        RPCExamples{
            "\nCreate a multisig address from 2 public keys\n" +
            HelpExampleCli("createmultisig",
                           "2 "
                           "\"["
                           "\\\"03789ed0bb717d88f7d321a368d905e7430207ebbd82bd3"
                           "42cf11ae157a7ace5fd\\\","
                           "\\\"03dbc6764b8884a92e871274b87583e6d5c2a58819473e1"
                           "7e107ef3f6aa5a61626\\\"]\"") +
            "\nAs a JSON-RPC call\n" +
            HelpExampleRpc("createmultisig",
                           "2, "
                           "\"["
                           "\\\"03789ed0bb717d88f7d321a368d905e7430207ebbd82bd3"
                           "42cf11ae157a7ace5fd\\\","
                           "\\\"03dbc6764b8884a92e871274b87583e6d5c2a58819473e1"
                           "7e107ef3f6aa5a61626\\\"]\"")},
    }
        .Check(request);

    int required = request.params[0].get_int();

    // Get the public keys
    const UniValue &keys = request.params[1].get_array();
    std::vector<CPubKey> pubkeys;
    for (size_t i = 0; i < keys.size(); ++i) {
        if ((keys[i].get_str().length() == 2 * CPubKey::COMPRESSED_SIZE ||
             keys[i].get_str().length() == 2 * CPubKey::SIZE) &&
            IsHex(keys[i].get_str())) {
            pubkeys.push_back(HexToPubKey(keys[i].get_str()));
        } else {
            throw JSONRPCError(
                RPC_INVALID_ADDRESS_OR_KEY,
                strprintf("Invalid public key: %s\n", keys[i].get_str()));
        }
    }

    // Get the output type
    OutputType output_type = OutputType::LEGACY;

    // Construct using pay-to-script-hash:
    FillableSigningProvider keystore;
    CScript inner;
    const CTxDestination dest = AddAndGetMultisigDestination(
        required, pubkeys, output_type, keystore, inner);

    // Make the descriptor
    std::unique_ptr<Descriptor> descriptor =
        InferDescriptor(GetScriptForDestination(dest), keystore);

    UniValue result(UniValue::VOBJ);
    result.pushKV("address", EncodeDestination(dest, config));
    result.pushKV("redeemScript", HexStr(inner.begin(), inner.end()));
    result.pushKV("descriptor", descriptor->ToString());

    return result;
}

UniValue getdescriptorinfo(const Config &config,
                           const JSONRPCRequest &request) {
    RPCHelpMan{
        "getdescriptorinfo",
        {"Analyses a descriptor.\n"},
        {
            {"descriptor", RPCArg::Type::STR, RPCArg::Optional::NO,
             "The descriptor."},
        },
        RPCResult{
            RPCResult::Type::OBJ,
            "",
            "",
            {
                {RPCResult::Type::STR, "descriptor",
                 "The descriptor in canonical form, without private keys"},
                {RPCResult::Type::STR, "checksum",
                 "The checksum for the input descriptor"},
                {RPCResult::Type::BOOL, "isrange",
                 "Whether the descriptor is ranged"},
                {RPCResult::Type::BOOL, "issolvable",
                 "Whether the descriptor is solvable"},
                {RPCResult::Type::BOOL, "hasprivatekeys",
                 "Whether the input descriptor contained at least one private "
                 "key"},
            }},
        RPCExamples{"Analyse a descriptor\n" +
                    HelpExampleCli("getdescriptorinfo",
                                   "\"pkh([d34db33f/84h/0h/"
                                   "0h]"
                                   "0279be667ef9dcbbac55a06295Ce870b07029Bfcdb2"
                                   "dce28d959f2815b16f81798)\"")}}
        .Check(request);

    RPCTypeCheck(request.params, {UniValue::VSTR});

    FlatSigningProvider provider;
    std::string error;
    auto desc = Parse(request.params[0].get_str(), provider, error);
    if (!desc) {
        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, error);
    }

    UniValue result(UniValue::VOBJ);
    result.pushKV("descriptor", desc->ToString());
    result.pushKV("checksum",
                  GetDescriptorChecksum(request.params[0].get_str()));
    result.pushKV("isrange", desc->IsRange());
    result.pushKV("issolvable", desc->IsSolvable());
    result.pushKV("hasprivatekeys", provider.keys.size() > 0);
    return result;
}

UniValue deriveaddresses(const Config &config, const JSONRPCRequest &request) {
    RPCHelpMan{
        "deriveaddresses",
        {"Derives one or more addresses corresponding to an output "
         "descriptor.\n"
         "Examples of output descriptors are:\n"
         "    pkh(<pubkey>)                        P2PKH outputs for the given "
         "pubkey\n"
         "    sh(multi(<n>,<pubkey>,<pubkey>,...)) P2SH-multisig outputs for "
         "the given threshold and pubkeys\n"
         "    raw(<hex script>)                    Outputs whose scriptPubKey "
         "equals the specified hex scripts\n"
         "\nIn the above, <pubkey> either refers to a fixed public key in "
         "hexadecimal notation, or to an xpub/xprv optionally followed by one\n"
         "or more path elements separated by \"/\", where \"h\" represents a "
         "hardened child key.\n"
         "For more information on output descriptors, see the documentation in "
         "the doc/descriptors.md file.\n"},
        {
            {"descriptor", RPCArg::Type::STR, RPCArg::Optional::NO,
             "The descriptor."},
            {"range", RPCArg::Type::RANGE, RPCArg::Optional::OMITTED_NAMED_ARG,
             "If a ranged descriptor is used, this specifies the end or the "
             "range (in [begin,end] notation) to derive."},
        },
        RPCResult{
            RPCResult::Type::ARR,
            "",
            "",
            {
                {RPCResult::Type::STR, "address", "the derived addresses"},
            }},
        RPCExamples{"First three pkh receive addresses\n" +
                    HelpExampleCli(
                        "deriveaddresses",
                        "\"pkh([d34db33f/84h/0h/0h]"
                        "xpub6DJ2dNUysrn5Vt36jH2KLBT2i1auw1tTSSomg8P"
                        "hqNiUtx8QX2SvC9nrHu81fT41fvDUnhMjEzQgXnQjKE"
                        "u3oaqMSzhSrHMxyyoEAmUHQbY/0/*)#3vhfv5h5\" \"[0,2]\"")}}
        .Check(request);

    // Range argument is checked later
    RPCTypeCheck(request.params, {UniValue::VSTR, UniValueType()});
    const std::string desc_str = request.params[0].get_str();

    int64_t range_begin = 0;
    int64_t range_end = 0;

    if (request.params.size() >= 2 && !request.params[1].isNull()) {
        std::tie(range_begin, range_end) =
            ParseDescriptorRange(request.params[1]);
    }

    FlatSigningProvider key_provider;
    std::string error;
    auto desc =
        Parse(desc_str, key_provider, error, /* require_checksum = */ true);
    if (!desc) {
        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, error);
    }

    if (!desc->IsRange() && request.params.size() > 1) {
        throw JSONRPCError(
            RPC_INVALID_PARAMETER,
            "Range should not be specified for an un-ranged descriptor");
    }

    if (desc->IsRange() && request.params.size() == 1) {
        throw JSONRPCError(RPC_INVALID_PARAMETER,
                           "Range must be specified for a ranged descriptor");
    }

    UniValue addresses(UniValue::VARR);

    for (int i = range_begin; i <= range_end; ++i) {
        FlatSigningProvider provider;
        std::vector<CScript> scripts;
        if (!desc->Expand(i, key_provider, scripts, provider)) {
            throw JSONRPCError(
                RPC_INVALID_ADDRESS_OR_KEY,
                strprintf("Cannot derive script without private keys"));
        }

        for (const CScript &script : scripts) {
            CTxDestination dest;
            if (!ExtractDestination(script, dest)) {
                throw JSONRPCError(
                    RPC_INVALID_ADDRESS_OR_KEY,
                    strprintf(
                        "Descriptor does not have a corresponding address"));
            }

            addresses.push_back(EncodeDestination(dest, config));
        }
    }

    // This should not be possible, but an assert seems overkill:
    if (addresses.empty()) {
        throw JSONRPCError(RPC_MISC_ERROR, "Unexpected empty result");
    }

    return addresses;
}

static UniValue verifymessage(const Config &config,
                              const JSONRPCRequest &request) {
    RPCHelpMan{
        "verifymessage",
        "Verify a signed message\n",
        {
            {"address", RPCArg::Type::STR, RPCArg::Optional::NO,
             "The bitcoin address to use for the signature."},
            {"signature", RPCArg::Type::STR, RPCArg::Optional::NO,
             "The signature provided by the signer in base 64 encoding (see "
             "signmessage)."},
            {"message", RPCArg::Type::STR, RPCArg::Optional::NO,
             "The message that was signed."},
        },
        RPCResult{RPCResult::Type::BOOL, "",
                  "If the signature is verified or not."},
        RPCExamples{
            "\nUnlock the wallet for 30 seconds\n" +
            HelpExampleCli("walletpassphrase", "\"mypassphrase\" 30") +
            "\nCreate the signature\n" +
            HelpExampleCli(
                "signmessage",
                "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX\" \"my message\"") +
            "\nVerify the signature\n" +
            HelpExampleCli("verifymessage", "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4"
                                            "XX\" \"signature\" \"my "
                                            "message\"") +
            "\nAs a JSON-RPC call\n" +
            HelpExampleRpc("verifymessage", "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4"
                                            "XX\", \"signature\", \"my "
                                            "message\"")},
    }
        .Check(request);

    LOCK(cs_main);

    std::string strAddress = request.params[0].get_str();
    std::string strSign = request.params[1].get_str();
    std::string strMessage = request.params[2].get_str();

    switch (MessageVerify(config.GetChainParams(), strAddress, strSign,
                          strMessage)) {
        case MessageVerificationResult::ERR_INVALID_ADDRESS:
            throw JSONRPCError(RPC_TYPE_ERROR, "Invalid address");
        case MessageVerificationResult::ERR_ADDRESS_NO_KEY:
            throw JSONRPCError(RPC_TYPE_ERROR, "Address does not refer to key");
        case MessageVerificationResult::ERR_MALFORMED_SIGNATURE:
            throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY,
                               "Malformed base64 encoding");
        case MessageVerificationResult::ERR_PUBKEY_NOT_RECOVERED:
        case MessageVerificationResult::ERR_NOT_SIGNED:
            return false;
        case MessageVerificationResult::OK:
            return true;
    }

    return false;
}

static UniValue signmessagewithprivkey(const Config &config,
                                       const JSONRPCRequest &request) {
    RPCHelpMan{
        "signmessagewithprivkey",
        "Sign a message with the private key of an address\n",
        {
            {"privkey", RPCArg::Type::STR, RPCArg::Optional::NO,
             "The private key to sign the message with."},
            {"message", RPCArg::Type::STR, RPCArg::Optional::NO,
             "The message to create a signature of."},
        },
        RPCResult{RPCResult::Type::STR, "signature",
                  "The signature of the message encoded in base 64"},
        RPCExamples{"\nCreate the signature\n" +
                    HelpExampleCli("signmessagewithprivkey",
                                   "\"privkey\" \"my message\"") +
                    "\nVerify the signature\n" +
                    HelpExampleCli("verifymessage",
                                   "\"1D1ZrZNe3JUo7ZycKEYQQiQAWd9y54F4XX\" "
                                   "\"signature\" \"my message\"") +
                    "\nAs a JSON-RPC call\n" +
                    HelpExampleRpc("signmessagewithprivkey",
                                   "\"privkey\", \"my message\"")},
    }
        .Check(request);

    std::string strPrivkey = request.params[0].get_str();
    std::string strMessage = request.params[1].get_str();

    CKey key = DecodeSecret(strPrivkey);
    if (!key.IsValid()) {
        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Invalid private key");
    }

    std::string signature;

    if (!MessageSign(key, strMessage, signature)) {
        throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Sign failed");
    }

    return signature;
}

static UniValue setmocktime(const Config &config,
                            const JSONRPCRequest &request) {
    RPCHelpMan{
        "setmocktime",
        "Set the local time to given timestamp (-regtest only)\n",
        {
            {"timestamp", RPCArg::Type::NUM, RPCArg::Optional::NO,
             UNIX_EPOCH_TIME +
                 "\n"
                 "   Pass 0 to go back to using the system time."},
        },
        RPCResult{RPCResult::Type::NONE, "", ""},
        RPCExamples{""},
    }
        .Check(request);

    if (!config.GetChainParams().IsMockableChain()) {
        throw std::runtime_error(
            "setmocktime for regression testing (-regtest mode) only");
    }

    // For now, don't change mocktime if we're in the middle of validation, as
    // this could have an effect on mempool time-based eviction, as well as
    // IsInitialBlockDownload().
    // TODO: figure out the right way to synchronize around mocktime, and
    // ensure all call sites of GetTime() are accessing this safely.
    LOCK(cs_main);

    RPCTypeCheck(request.params, {UniValue::VNUM});
    int64_t time = request.params[0].get_int64();
    if (time < 0) {
        throw JSONRPCError(RPC_INVALID_PARAMETER,
                           "Timestamp must be 0 or greater");
    }
    SetMockTime(time);
    if (request.context.Has<NodeContext>()) {
        for (const auto &chain_client :
             request.context.Get<NodeContext>().chain_clients) {
            chain_client->setMockTime(time);
        }
    }

    return NullUniValue;
}

static UniValue mockscheduler(const Config &config,
                              const JSONRPCRequest &request) {
    RPCHelpMan{
        "mockscheduler",
        "Bump the scheduler into the future (-regtest only)\n",
        {
            {"delta_time", RPCArg::Type::NUM, RPCArg::Optional::NO,
             "Number of seconds to forward the scheduler into the future."},
        },
        RPCResult{RPCResult::Type::NONE, "", ""},
        RPCExamples{""},
    }
        .Check(request);

    if (!Params().IsMockableChain()) {
        throw std::runtime_error(
            "mockscheduler is for regression testing (-regtest mode) only");
    }

    // check params are valid values
    RPCTypeCheck(request.params, {UniValue::VNUM});
    int64_t delta_seconds = request.params[0].get_int64();
    if ((delta_seconds <= 0) || (delta_seconds > 3600)) {
        throw std::runtime_error(
            "delta_time must be between 1 and 3600 seconds (1 hr)");
    }

    // protect against null pointer dereference
    CHECK_NONFATAL(request.context.Has<NodeContext>());
    NodeContext &node = request.context.Get<NodeContext>();
    CHECK_NONFATAL(node.scheduler);
    node.scheduler->MockForward(std::chrono::seconds(delta_seconds));

    return NullUniValue;
}

static UniValue RPCLockedMemoryInfo() {
    LockedPool::Stats stats = LockedPoolManager::Instance().stats();
    UniValue obj(UniValue::VOBJ);
    obj.pushKV("used", uint64_t(stats.used));
    obj.pushKV("free", uint64_t(stats.free));
    obj.pushKV("total", uint64_t(stats.total));
    obj.pushKV("locked", uint64_t(stats.locked));
    obj.pushKV("chunks_used", uint64_t(stats.chunks_used));
    obj.pushKV("chunks_free", uint64_t(stats.chunks_free));
    return obj;
}

#ifdef HAVE_MALLOC_INFO
static std::string RPCMallocInfo() {
    char *ptr = nullptr;
    size_t size = 0;
    FILE *f = open_memstream(&ptr, &size);
    if (f) {
        malloc_info(0, f);
        fclose(f);
        if (ptr) {
            std::string rv(ptr, size);
            free(ptr);
            return rv;
        }
    }
    return "";
}
#endif

static UniValue getmemoryinfo(const Config &config,
                              const JSONRPCRequest &request) {
    /* Please, avoid using the word "pool" here in the RPC interface or help,
     * as users will undoubtedly confuse it with the other "memory pool"
     */
    RPCHelpMan{
        "getmemoryinfo",
        "Returns an object containing information about memory usage.\n",
        {
            {"mode", RPCArg::Type::STR, /* default */ "\"stats\"",
             "determines what kind of information is returned.\n"
             "  - \"stats\" returns general statistics about memory usage in "
             "the daemon.\n"
             "  - \"mallocinfo\" returns an XML string describing low-level "
             "heap state (only available if compiled with glibc 2.10+)."},
        },
        {
            RPCResult{
                "mode \"stats\"",
                RPCResult::Type::OBJ,
                "",
                "",
                {
                    {RPCResult::Type::OBJ,
                     "locked",
                     "Information about locked memory manager",
                     {
                         {RPCResult::Type::NUM, "used", "Number of bytes used"},
                         {RPCResult::Type::NUM, "free",
                          "Number of bytes available in current arenas"},
                         {RPCResult::Type::NUM, "total",
                          "Total number of bytes managed"},
                         {RPCResult::Type::NUM, "locked",
                          "Amount of bytes that succeeded locking. If this "
                          "number is smaller than total, locking pages failed "
                          "at some point and key data could be swapped to "
                          "disk."},
                         {RPCResult::Type::NUM, "chunks_used",
                          "Number allocated chunks"},
                         {RPCResult::Type::NUM, "chunks_free",
                          "Number unused chunks"},
                     }},
                }},
            RPCResult{"mode \"mallocinfo\"", RPCResult::Type::STR, "",
                      "\"<malloc version=\"1\">...\""},
        },
        RPCExamples{HelpExampleCli("getmemoryinfo", "") +
                    HelpExampleRpc("getmemoryinfo", "")},
    }
        .Check(request);

    std::string mode =
        request.params[0].isNull() ? "stats" : request.params[0].get_str();
    if (mode == "stats") {
        UniValue obj(UniValue::VOBJ);
        obj.pushKV("locked", RPCLockedMemoryInfo());
        return obj;
    } else if (mode == "mallocinfo") {
#ifdef HAVE_MALLOC_INFO
        return RPCMallocInfo();
#else
        throw JSONRPCError(
            RPC_INVALID_PARAMETER,
            "mallocinfo is only available when compiled with glibc 2.10+");
#endif
    } else {
        throw JSONRPCError(RPC_INVALID_PARAMETER, "unknown mode " + mode);
    }
}

static void EnableOrDisableLogCategories(UniValue cats, bool enable) {
    cats = cats.get_array();
    for (size_t i = 0; i < cats.size(); ++i) {
        std::string cat = cats[i].get_str();

        bool success;
        if (enable) {
            success = LogInstance().EnableCategory(cat);
        } else {
            success = LogInstance().DisableCategory(cat);
        }

        if (!success) {
            throw JSONRPCError(RPC_INVALID_PARAMETER,
                               "unknown logging category " + cat);
        }
    }
}

static UniValue logging(const Config &config, const JSONRPCRequest &request) {
    RPCHelpMan{
        "logging",
        "Gets and sets the logging configuration.\n"
        "When called without an argument, returns the list of categories with "
        "status that are currently being debug logged or not.\n"
        "When called with arguments, adds or removes categories from debug "
        "logging and return the lists above.\n"
        "The arguments are evaluated in order \"include\", \"exclude\".\n"
        "If an item is both included and excluded, it will thus end up being "
        "excluded.\n"
        "The valid logging categories are: " +
            ListLogCategories() +
            "\n"
            "In addition, the following are available as category names with "
            "special meanings:\n"
            "  - \"all\",  \"1\" : represent all logging categories.\n"
            "  - \"none\", \"0\" : even if other logging categories are "
            "specified, ignore all of them.\n",
        {
            {"include",
             RPCArg::Type::ARR,
             RPCArg::Optional::OMITTED_NAMED_ARG,
             "The categories to add to debug logging",
             {
                 {"include_category", RPCArg::Type::STR,
                  RPCArg::Optional::OMITTED, "the valid logging category"},
             }},
            {"exclude",
             RPCArg::Type::ARR,
             RPCArg::Optional::OMITTED_NAMED_ARG,
             "The categories to remove from debug logging",
             {
                 {"exclude_category", RPCArg::Type::STR,
                  RPCArg::Optional::OMITTED, "the valid logging category"},
             }},
        },
        RPCResult{
            RPCResult::Type::OBJ_DYN,
            "",
            "keys are the logging categories, and values indicates its status",
            {
                {RPCResult::Type::BOOL, "category",
                 "if being debug logged or not. false:inactive, true:active"},
            }},
        RPCExamples{
            HelpExampleCli("logging", "\"[\\\"all\\\"]\" \"[\\\"http\\\"]\"") +
            HelpExampleRpc("logging", "[\"all\"], [\"libevent\"]")},
    }
        .Check(request);

    uint32_t original_log_categories = LogInstance().GetCategoryMask();
    if (request.params[0].isArray()) {
        EnableOrDisableLogCategories(request.params[0], true);
    }

    if (request.params[1].isArray()) {
        EnableOrDisableLogCategories(request.params[1], false);
    }

    uint32_t updated_log_categories = LogInstance().GetCategoryMask();
    uint32_t changed_log_categories =
        original_log_categories ^ updated_log_categories;

    if (changed_log_categories & BCLog::LIBEVENT) {
        if (!UpdateHTTPServerLogging(
                LogInstance().WillLogCategory(BCLog::LIBEVENT))) {
            LogInstance().DisableCategory(BCLog::LIBEVENT);
            if (changed_log_categories == BCLog::LIBEVENT) {
                throw JSONRPCError(RPC_INVALID_PARAMETER,
                                   "libevent logging cannot be updated when "
                                   "using libevent before v2.1.1.");
            }
        }
    }

    UniValue result(UniValue::VOBJ);
    std::vector<CLogCategoryActive> vLogCatActive = ListActiveLogCategories();
    for (const auto &logCatActive : vLogCatActive) {
        result.pushKV(logCatActive.category, logCatActive.active);
    }

    return result;
}

static UniValue echo(const Config &config, const JSONRPCRequest &request) {
    if (request.fHelp) {
        throw std::runtime_error(RPCHelpMan{
            "echo|echojson ...",
            "Simply echo back the input arguments. This command is for "
            "testing.\n"
            "\nThe difference between echo and echojson is that echojson has "
            "argument conversion enabled in the client-side table in "
            "bitcoin-cli and the GUI. There is no server-side difference.",
            {},
            RPCResult{RPCResult::Type::NONE, "",
                      "Returns whatever was passed in"},
            RPCExamples{""},
        }
                                     .ToString());
    }

    CHECK_NONFATAL(request.params.size() != 100);

    return request.params;
}

void RegisterMiscRPCCommands(CRPCTable &t) {
    // clang-format off
    static const CRPCCommand commands[] = {
        //  category            name                      actor (function)        argNames
        //  ------------------- ------------------------  ----------------------  ----------
        { "control",            "getmemoryinfo",          getmemoryinfo,          {"mode"} },
        { "control",            "logging",                logging,                {"include", "exclude"} },
        { "util",               "validateaddress",        validateaddress,        {"address"} },
        { "util",               "createmultisig",         createmultisig,         {"nrequired","keys"} },
        { "util",               "deriveaddresses",        deriveaddresses,        {"descriptor", "range"} },
        { "util",               "getdescriptorinfo",      getdescriptorinfo,      {"descriptor"} },
        { "util",               "verifymessage",          verifymessage,          {"address","signature","message"} },
        { "util",               "signmessagewithprivkey", signmessagewithprivkey, {"privkey","message"} },

        /* Not shown in help */
        { "hidden",             "setmocktime",            setmocktime,            {"timestamp"}},
        { "hidden",             "mockscheduler",          mockscheduler,          {"delta_time"}},
        { "hidden",             "echo",                   echo,                   {"arg0","arg1","arg2","arg3","arg4","arg5","arg6","arg7","arg8","arg9"}},
        { "hidden",             "echojson",               echo,                   {"arg0","arg1","arg2","arg3","arg4","arg5","arg6","arg7","arg8","arg9"}},
    };
    // clang-format on

    for (unsigned int vcidx = 0; vcidx < ARRAYLEN(commands); vcidx++) {
        t.appendCommand(commands[vcidx].name, &commands[vcidx]);
    }
}