com.liferay.wiki.web.internal.portlet.action.GetPageAttachmentAction.java Source code

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Here is the source code for com.liferay.wiki.web.internal.portlet.action.GetPageAttachmentAction.java

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/**
 * Copyright (c) 2000-present Liferay, Inc. 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 2.1 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.
 */

package com.liferay.wiki.web.internal.portlet.action;

import com.liferay.document.library.kernel.exception.NoSuchFileException;
import com.liferay.portal.kernel.flash.FlashMagicBytesUtil;
import com.liferay.portal.kernel.log.Log;
import com.liferay.portal.kernel.log.LogFactoryUtil;
import com.liferay.portal.kernel.portletfilerepository.PortletFileRepositoryUtil;
import com.liferay.portal.kernel.repository.model.FileEntry;
import com.liferay.portal.kernel.servlet.ServletResponseUtil;
import com.liferay.portal.kernel.struts.BaseStrutsAction;
import com.liferay.portal.kernel.struts.StrutsAction;
import com.liferay.portal.kernel.util.FileUtil;
import com.liferay.portal.kernel.util.ParamUtil;
import com.liferay.portal.kernel.util.PortalUtil;
import com.liferay.portal.kernel.util.StringPool;
import com.liferay.portal.kernel.workflow.WorkflowConstants;
import com.liferay.trash.kernel.util.TrashUtil;
import com.liferay.wiki.exception.NoSuchPageException;
import com.liferay.wiki.importer.impl.mediawiki.MediaWikiImporter;
import com.liferay.wiki.model.WikiPage;
import com.liferay.wiki.service.WikiPageService;

import java.io.InputStream;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;

/**
 * @author Jorge Ferrer
 */
@Component(property = "path=/wiki/get_page_attachment", service = StrutsAction.class)
public class GetPageAttachmentAction extends BaseStrutsAction {

    @Override
    public String execute(HttpServletRequest request, HttpServletResponse response) throws Exception {

        try {
            long nodeId = ParamUtil.getLong(request, "nodeId");
            String title = ParamUtil.getString(request, "title");
            String fileName = ParamUtil.getString(request, "fileName");

            if (fileName.startsWith(MediaWikiImporter.SHARED_IMAGES_TITLE + StringPool.SLASH)) {

                String[] fileNameParts = fileName.split(MediaWikiImporter.SHARED_IMAGES_TITLE + StringPool.SLASH);

                fileName = fileNameParts[1];

                title = MediaWikiImporter.SHARED_IMAGES_TITLE;
            }

            int status = ParamUtil.getInteger(request, "status", WorkflowConstants.STATUS_APPROVED);

            getFile(nodeId, title, fileName, status, request, response);

            return null;
        } catch (Exception e) {
            if ((e instanceof NoSuchPageException) || (e instanceof NoSuchFileException)) {

                if (_log.isWarnEnabled()) {
                    _log.warn(e);
                }
            } else {
                PortalUtil.sendError(e, request, response);
            }

            return null;
        }
    }

    protected void getFile(long nodeId, String title, String fileName, int status, HttpServletRequest request,
            HttpServletResponse response) throws Exception {

        WikiPage wikiPage = _wikiPageService.getPage(nodeId, title);

        FileEntry fileEntry = PortletFileRepositoryUtil.getPortletFileEntry(wikiPage.getGroupId(),
                wikiPage.getAttachmentsFolderId(), fileName);

        if ((status != WorkflowConstants.STATUS_IN_TRASH) && fileEntry.isInTrash()) {

            return;
        }

        if (fileEntry.isInTrash()) {
            fileName = TrashUtil.getOriginalTitle(fileEntry.getTitle());
        }

        InputStream is = fileEntry.getContentStream();

        FlashMagicBytesUtil.Result flashMagicBytesUtilResult = FlashMagicBytesUtil.check(is);

        if (flashMagicBytesUtilResult.isFlash()) {
            fileName = FileUtil.stripExtension(fileName) + ".swf";
        }

        is = flashMagicBytesUtilResult.getInputStream();

        ServletResponseUtil.sendFile(request, response, fileName, is, fileEntry.getSize(), fileEntry.getMimeType());
    }

    @Reference(unbind = "-")
    protected void setWikiPageService(WikiPageService wikiPageService) {
        _wikiPageService = wikiPageService;
    }

    private static final Log _log = LogFactoryUtil.getLog(GetPageAttachmentAction.class);

    private WikiPageService _wikiPageService;

}