org.pdfgal.pdfgalweb.services.impl.UnProtectServiceImpl.java Source code

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Here is the source code for org.pdfgal.pdfgalweb.services.impl.UnProtectServiceImpl.java

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/*
 * PDFGalWeb
 * Copyright (c) 2014, Alejandro Pernas Pan, All rights reserved.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3.0 of the License, or (at your option) any later version.
    
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library.
 */

package org.pdfgal.pdfgalweb.services.impl;

import java.io.IOException;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.lang3.StringUtils;
import org.apache.pdfbox.exceptions.COSVisitorException;
import org.apache.pdfbox.exceptions.CryptographyException;
import org.apache.pdfbox.pdmodel.encryption.BadSecurityHandlerException;
import org.pdfgal.pdfgal.pdfgal.PDFGal;
import org.pdfgal.pdfgalweb.forms.DownloadForm;
import org.pdfgal.pdfgalweb.services.UnProtectService;
import org.pdfgal.pdfgalweb.utils.FileUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

@Service
public class UnProtectServiceImpl implements UnProtectService {

    @Autowired
    private FileUtils fileUtils;

    @Autowired
    private PDFGal pdfGal;

    @Override
    public DownloadForm unProtect(final MultipartFile file, final String password,
            final HttpServletResponse response)
            throws COSVisitorException, IOException, BadSecurityHandlerException, CryptographyException {

        DownloadForm result = new DownloadForm();

        if (!file.isEmpty() && StringUtils.isNotBlank(password)) {
            final String originalName = file.getOriginalFilename();
            final String inputUri = this.fileUtils.saveFile(file);
            final String outputUri = this.fileUtils.getAutogeneratedName(originalName);

            try {
                // File is unprotected
                this.pdfGal.unProtect(inputUri, outputUri, password);
            } catch (COSVisitorException | IOException | BadSecurityHandlerException | CryptographyException e) {
                // Temporal files are deleted from system
                this.fileUtils.delete(inputUri);
                this.fileUtils.delete(outputUri);
                throw e;
            }

            // Temporal files are deleted from system
            this.fileUtils.delete(inputUri);

            result = new DownloadForm(outputUri, originalName);
        }

        return result;
    }
}