001    /**
002     * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portlet.documentlibrary.antivirus;
016    
017    import java.io.File;
018    import java.io.IOException;
019    
020    /**
021     * @author Michael C. Han
022     */
023    public class ClamAntivirusScannerImpl extends BaseFileAntivirusScanner {
024    
025            @Override
026            public void scan(File file) throws AntivirusScannerException {
027                    Process process = null;
028    
029                    try {
030                            ProcessBuilder processBuilder = new ProcessBuilder(
031                                    "clamscan", "--stdout", "--no-summary", file.getAbsolutePath());
032    
033                            processBuilder.redirectErrorStream(true);
034    
035                            process = processBuilder.start();
036    
037                            process.waitFor();
038    
039                            int exitValue = process.exitValue();
040    
041                            if (exitValue == 1) {
042                                    throw new AntivirusScannerException(
043                                            "Virus detected in " + file.getAbsolutePath(),
044                                            AntivirusScannerException.VIRUS_DETECTED);
045                            }
046                            else if (exitValue >= 2) {
047                                    throw new AntivirusScannerException(
048                                            AntivirusScannerException.PROCESS_FAILURE);
049                            }
050                    }
051                    catch (InterruptedException | IOException e) {
052                            throw new AntivirusScannerException(
053                                    AntivirusScannerException.PROCESS_FAILURE);
054                    }
055                    finally {
056                            if (process != null) {
057                                    process.destroy();
058                            }
059                    }
060            }
061    
062    }