Subversion Repositories XServices

/*

 *   Copyright 2013 Brian Rosenberger (Brutex Network)

 *

 *   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.

*/

package net.brutex.xservices.security;

import lombok.extern.slf4j.Slf4j;

import net.brutex.xservices.ws.XmlService;

import net.brutex.xservices.ws.rs.FileInfo;

import org.apache.shiro.authz.Permission;

import org.apache.shiro.authz.permission.InvalidPermissionStringException;

/**

 * @author Brian Rosenberger, bru(at)brutex.de

 *

 */

@Slf4j

public class PermissionResolver implements org.apache.shiro.authz.permission.PermissionResolver {

	private final String DELIMITER = "||";

	@Override

	public Permission resolvePermission(String permissionString) {

		log.debug(String.format("Trying to examine new Permission '{}'", permissionString));

		if(! permissionString.contains(DELIMITER)) {

			log.error(String.format("Permission '{}' is missing permission class.", permissionString));

			throw new InvalidPermissionStringException(String.format("Permission '{}' is missing permission class.", permissionString), permissionString);

		}

		int delimiterIndex = permissionString.indexOf(DELIMITER);

		String value = permissionString.substring(0, delimiterIndex);

		delimiterIndex = delimiterIndex + DELIMITER.length();

		switch (value) {

		case XmlService.SERVICE_NAME:

			log.debug(String.format("Found '{}' as permission class.", value));

			return new XmlServicePermission(permissionString.substring( delimiterIndex ));

		case FileInfo.SERVICE_NAME:

			log.debug(String.format("Found '{}' as permission class.", value));

			return new DirectoryPermission(permissionString.substring( delimiterIndex ));

		default:

			log.warn(String.format("Permission class '{}' is not defined.", value));

			throw new InvalidPermissionStringException(String.format("Permission class '%s' is not defined.", value), permissionString);

		}

	}

}