/*

 * 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 <fuzzer/FuzzedDataProvider.h>

#include <log4cxx/spi/loggingevent.h>

#include <log4cxx/helpers/transcoder.h>

#include <log4cxx/pattern/patternconverter.h>

#include <log4cxx/pattern/loggerpatternconverter.h>

#include <log4cxx/pattern/literalpatternconverter.h>

#include <log4cxx/pattern/classnamepatternconverter.h>

#include <log4cxx/pattern/datepatternconverter.h>

#include <log4cxx/pattern/filedatepatternconverter.h>

#include <log4cxx/pattern/filelocationpatternconverter.h>

#include <log4cxx/pattern/fulllocationpatternconverter.h>

#include <log4cxx/pattern/integerpatternconverter.h>

#include <log4cxx/pattern/linelocationpatternconverter.h>

#include <log4cxx/pattern/messagepatternconverter.h>

#include <log4cxx/pattern/lineseparatorpatternconverter.h>

#include <log4cxx/pattern/methodlocationpatternconverter.h>

#include <log4cxx/pattern/levelpatternconverter.h>

#include <log4cxx/pattern/relativetimepatternconverter.h>

#include <log4cxx/pattern/threadpatternconverter.h>

#include <log4cxx/pattern/ndcpatternconverter.h>

#include <log4cxx/pattern/propertiespatternconverter.h>

#include <log4cxx/pattern/throwableinformationpatternconverter.h>

#include <log4cxx/pattern/threadusernamepatternconverter.h>

namespace

{

  const int MaximumOptionByteCount = 1000;

  const int MaximumNameByteCount = 100;

}

using namespace log4cxx;

using namespace log4cxx::helpers;

using namespace log4cxx::spi;

using namespace log4cxx::pattern;

// Creates options from the FuzzedDataProvider

auto createOptions(FuzzedDataProvider* fdp) {

  auto opt1Str = fdp->ConsumeRandomLengthString(MaximumOptionByteCount);

  auto opt2Str = fdp->ConsumeRandomLengthString(MaximumOptionByteCount);

  auto opt3Str = fdp->ConsumeRandomLengthString(MaximumOptionByteCount);

  auto opt4Str = fdp->ConsumeRandomLengthString(MaximumOptionByteCount);

  auto opt5Str = fdp->ConsumeRandomLengthString(MaximumOptionByteCount);

  LogString opt1, opt2, opt3, opt4, opt5;

  Transcoder::decode(opt1Str, opt1);

  Transcoder::decode(opt2Str, opt2);

  Transcoder::decode(opt3Str, opt3);

  Transcoder::decode(opt4Str, opt4);

  Transcoder::decode(opt5Str, opt5);

  return std::vector<LogString>

    { opt1

    , opt2

    , opt3

    , opt4

    , opt5

    };

}

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

  // Create a FuzzedDataProvider which we will use to

  // create strings from "data".

  FuzzedDataProvider fdp(data, size);

  auto loggerStr = fdp.ConsumeRandomLengthString(MaximumNameByteCount);

  auto contentStr = fdp.ConsumeRandomLengthString(MaximumOptionByteCount);

  LogString logger, content;

  Transcoder::decode(loggerStr, logger);

  Transcoder::decode(contentStr, content);

  // Create the event

  auto level = Level::getInfo();

  auto event = std::make_shared<LoggingEvent>(

      logger, level, content, LOG4CXX_LOCATION);

  // Select a converter and invoke it.

  switch(fdp.ConsumeIntegralInRange<int>(0, 14)) {

    case 0: {

      auto nameStr = fdp.ConsumeRandomLengthString(MaximumNameByteCount);

      auto opionStr = fdp.ConsumeRandomLengthString(MaximumOptionByteCount);

      LogString name, option;

      Transcoder::decode(nameStr, name);

      Transcoder::decode(opionStr, option);

      PropertiesPatternConverter(name, option).format(event, logger);

      break;

    }

    case 1: {

      LoggerPatternConverter(createOptions(&fdp)).format(event, logger);

      break;

    }

    case 2: {

      ClassNamePatternConverter(createOptions(&fdp)).format(event, logger);

      break;

    }

    case 3: {

      DatePatternConverter(createOptions(&fdp)).format(event, logger);

      break;

    }

    case 4: {

      FullLocationPatternConverter().format(event, logger);

      break;

    }

    case 5: {

      LineLocationPatternConverter().format(event, logger);

      break;

    }

    case 6: {

      MessagePatternConverter().format(event, logger);

      break;

    }

    case 7: {

      LineSeparatorPatternConverter().format(event, logger);

      break;

    }

    case 8: {

      MethodLocationPatternConverter().format(event, logger);

      break;

    }

    case 9: {

      LevelPatternConverter().format(event, logger);

    }

    case 10: {

      RelativeTimePatternConverter().format(event, logger);

      break;

    }

    case 11: {

      ThreadPatternConverter().format(event, logger);

      break;

    }

    case 12: {

      ThreadUsernamePatternConverter().format(event, logger);

      break;

    }

    case 13: {

      NDCPatternConverter().format(event, logger);

      break;

    }

    case 14: {

      ThrowableInformationPatternConverter(fdp.ConsumeBool()).format(event, logger);

      break;

    }

  }

  return 0;

}