/*

 * Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements.  See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You under the Apache License, Version 2.0

 * (the "License"); you may not use this file except in compliance with

 * the License.  You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

#include "stdint.h"

#include <log4cxx/logstring.h>

#include <log4cxx/ndc.h>

#include <log4cxx/helpers/stringhelper.h>

#include <fuzzer/FuzzedDataProvider.h>

#include <log4cxx/mdc.h>

#include <log4cxx/htmllayout.h>

#include <log4cxx/helpers/transcoder.h>

using namespace log4cxx;

using namespace log4cxx::helpers;

using namespace log4cxx::spi;

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

  // Setup HTMLLayout

  HTMLLayout layout;

  Pool p;

  FuzzedDataProvider fdp(data, size);

  // Optional locationinfo

  if (fdp.ConsumeBool()) {

    layout.setOption(LOG4CXX_STR("LOCATIONINFO"), LOG4CXX_STR("true"));

  }

  // Optional threadinfo

  if (fdp.ConsumeBool()) {

    LOG4CXX_DECODE_CHAR(title, fdp.ConsumeRandomLengthString());

    layout.setOption(LOG4CXX_STR("TITLE"), title);

  }

  // Header

  if (fdp.ConsumeBool()) {

    std::string headerStr = fdp.ConsumeRandomLengthString();

    LogString header;

    Transcoder::decode(headerStr, header);

    layout.appendHeader(header, p);

  }

  // Create random strings we need later

  std::string key1Str = fdp.ConsumeRandomLengthString();

  std::string val1Str = fdp.ConsumeRandomLengthString();

  std::string key2Str = fdp.ConsumeRandomLengthString();

  std::string val2Str = fdp.ConsumeRandomLengthString();

  std::string key3 = fdp.ConsumeRandomLengthString();

  std::string val3 = fdp.ConsumeRandomLengthString();

  std::string key4 = fdp.ConsumeRandomLengthString();

  std::string val4 = fdp.ConsumeRandomLengthString();

  std::string ndcMessage = fdp.ConsumeRandomLengthString();

  std::string loggerStr = fdp.ConsumeRandomLengthString();

  std::string contentStr = fdp.ConsumeRemainingBytesAsString();

  LogString key1, key2, val1, val2, logger, content;

  Transcoder::decode(loggerStr, logger);

  Transcoder::decode(key1Str, key1);

  Transcoder::decode(val1Str, val2);

  Transcoder::decode(key2Str, key2);

  Transcoder::decode(val2Str, val2);

  Transcoder::decode(contentStr, content);

  LevelPtr level = log4cxx::Level::getInfo();

  NDC::push(ndcMessage);

  spi::LoggingEventPtr event = log4cxx::spi::LoggingEventPtr(

    new log4cxx::spi::LoggingEvent(

      logger, level, content, LOG4CXX_LOCATION));

  // Set properties

  event->setProperty(key1, val1);

  event->setProperty(key2, val2);

  // Set MDC

  log4cxx::MDC::put(key3, val3);

  log4cxx::MDC::put(key4, val4);

  // Call the target API

  log4cxx::LogString result;

  layout.format(result, event, p);

  // Clean up

  log4cxx::NDC::clear();

  log4cxx::MDC::clear();

    return 0;

}