// Copyright (C) 2025 Ada Logcis Ltd.

//

// This Source Code Form is subject to the terms of the Mozilla Public

// License, v. 2.0. If a copy of the MPL was not distributed with this

// file, You can obtain one at http://mozilla.org/MPL/2.0/.

////////////////////////////////////////////////////////////////////////////////

#include "config.h"

#include <fuzzer/FuzzedDataProvider.h>

#include <agent/parser_context.h>

#include <agent/simple_parser.h>

#include <agent/ca_cfg_mgr.h>

#include <cc/data.h>

#include <exceptions/exceptions.h>

#include <string>

#include <memory>

using namespace isc::agent;

using namespace isc::data;

extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {

    FuzzedDataProvider fdp(data, size);

    bool checkOnly = fdp.ConsumeBool();

    AgentSimpleParser simpleParser;

    CtrlAgentCfgContextPtr ctxPtr(new CtrlAgentCfgContext());

    ParserContext ctx;

    ElementPtr elem;

    // Generate random parsing mode

    const uint8_t mode = fdp.ConsumeIntegralInRange<uint8_t>(0, 2);

    ParserContext::ParserType type = ParserContext::PARSER_JSON;

    if (mode == 1) {

        type = ParserContext::PARSER_AGENT;

    } else if (mode == 2) {

        type = ParserContext::PARSER_SUB_AGENT;

    }

    const std::string payload = fdp.ConsumeRemainingBytesAsString();

    // Target context parseString

    try {

        ctx.parseString(payload, type);

    } catch (const isc::Exception&) {

        // Slient exceptions

    }

    // Parse payload to JSON

    try {

        elem = Element::fromJSON(payload);

    } catch (...) {

        // If failed to parse the payload, early exit

        return 0;

    }

    // Target SimpleParser

    try {

        AgentSimpleParser::setAllDefaults(elem);

        simpleParser.checkTlsSetup(elem);

        simpleParser.parse(ctxPtr, elem, checkOnly);

    } catch (const isc::Exception&) {

        // Slient exceptions

    }

    return 0;

}