com.liferay.blogs.web.internal.upload.BaseBlogsUploadHandler Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of com.liferay.blogs.web Show documentation
There is a newer version: 2.0.2
Show newest version
/**
 * 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.blogs.web.internal.upload;

import com.liferay.blogs.kernel.exception.EntryImageNameException;
import com.liferay.blogs.kernel.exception.EntryImageSizeException;
import com.liferay.portal.kernel.exception.PortalException;
import com.liferay.portal.kernel.json.JSONFactoryUtil;
import com.liferay.portal.kernel.json.JSONObject;
import com.liferay.portal.kernel.security.auth.PrincipalException;
import com.liferay.portal.kernel.security.permission.ActionKeys;
import com.liferay.portal.kernel.security.permission.PermissionChecker;
import com.liferay.portal.kernel.security.permission.ResourcePermissionCheckerUtil;
import com.liferay.portal.kernel.servlet.ServletResponseConstants;
import com.liferay.portal.kernel.upload.BaseUploadHandler;
import com.liferay.portal.kernel.util.FileUtil;
import com.liferay.portal.kernel.util.PropsKeys;
import com.liferay.portal.kernel.util.StringPool;
import com.liferay.portal.kernel.util.StringUtil;
import com.liferay.portal.util.PrefsPropsUtil;
import com.liferay.portal.util.PropsValues;
import com.liferay.portlet.blogs.service.permission.BlogsPermission;

import javax.portlet.PortletRequest;
import javax.portlet.PortletResponse;

/**
 * @author Sergio González
 * @author Adolfo Pérez
 */
public abstract class BaseBlogsUploadHandler extends BaseUploadHandler {

	@Override
	public void validateFile(String fileName, String contentType, long size)
		throws PortalException {

		long maxSize = getMaxFileSize();

		if ((maxSize > 0) && (size > maxSize)) {
			throw new EntryImageSizeException();
		}

		String extension = FileUtil.getExtension(fileName);

		String[] imageExtensions = PrefsPropsUtil.getStringArray(
			PropsKeys.BLOGS_IMAGE_EXTENSIONS, StringPool.COMMA);

		for (String imageExtension : imageExtensions) {
			if (StringPool.STAR.equals(imageExtension) ||
				imageExtension.equals(StringPool.PERIOD + extension)) {

				return;
			}
		}

		throw new EntryImageNameException(
			"Invalid image for file name " + fileName);
	}

	@Override
	protected void checkPermission(
			long groupId, long folderId, PermissionChecker permissionChecker)
		throws PortalException {

		boolean containsResourcePermission =
			ResourcePermissionCheckerUtil.containsResourcePermission(
				permissionChecker, BlogsPermission.RESOURCE_NAME, groupId,
				ActionKeys.ADD_ENTRY);

		if (!containsResourcePermission) {
			throw new PrincipalException.MustHavePermission(
				permissionChecker, BlogsPermission.RESOURCE_NAME, groupId,
				ActionKeys.ADD_ENTRY);
		}
	}

	@Override
	protected void doHandleUploadException(
			PortletRequest portletRequest, PortletResponse portletResponse,
			PortalException pe, JSONObject jsonObject)
		throws PortalException {

		if (pe instanceof EntryImageNameException ||
			pe instanceof EntryImageSizeException) {

			String errorMessage = StringPool.BLANK;
			int errorType = 0;

			if (pe instanceof EntryImageNameException) {
				errorType =
					ServletResponseConstants.SC_FILE_EXTENSION_EXCEPTION;

				String[] imageExtensions = PrefsPropsUtil.getStringArray(
					PropsKeys.BLOGS_IMAGE_EXTENSIONS, StringPool.COMMA);

				errorMessage = StringUtil.merge(imageExtensions);
			}
			else if (pe instanceof EntryImageSizeException) {
				errorType = ServletResponseConstants.SC_FILE_SIZE_EXCEPTION;
			}

			JSONObject errorJSONObject = JSONFactoryUtil.createJSONObject();

			errorJSONObject.put("errorType", errorType);
			errorJSONObject.put("message", errorMessage);

			jsonObject.put("error", errorJSONObject);
		}
		else {
			throw pe;
		}
	}

	protected long getMaxFileSize() {
		return PropsValues.BLOGS_IMAGE_MAX_SIZE;
	}

	@Override
	protected String getParameterName() {
		return "imageSelectorFileName";
	}

}