// Copyright 2022 Google LLC
//
// Licensed 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.
//
////////////////////////////////////////////////////////////////////////////////

import com.code_intelligence.jazzer.api.FuzzedDataProvider;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;

import org.apache.commons.configuration2.XMLConfiguration;
import org.apache.commons.configuration2.ex.ConfigurationException;
import org.apache.commons.configuration2.io.FileHandler;

public class XMLConfigurationLoadFuzzer {
    public static void fuzzerTestOneInput(FuzzedDataProvider data) {
        // Create needed objects
        final File tempFile;
        try {
            tempFile = File.createTempFile("XMLConfiguration", ".xml");
        } catch (IOException ioe) {
            return;
        }

        final String absoluteFilepath = tempFile.getAbsolutePath();
        try {
            final FileWriter fileWriter = new FileWriter(tempFile);
            fileWriter.write(data.consumeRemainingAsString());
            fileWriter.close();
        } catch (IOException ioe) {
            tempFile.delete();
            return;
        }

        final XMLConfiguration xmlConfig = new XMLConfiguration();
        xmlConfig.setLogger(null); // disable logger

        final FileHandler fileHandler = new FileHandler(xmlConfig);
        fileHandler.setPath(absoluteFilepath);

        try {
            fileHandler.load();
        } catch (ConfigurationException ignored) {
            // expected Exceptions get ignored
        } finally {
            tempFile.delete();
        }
    }
}