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146 brianR 1
/*
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 *   Copyright 2013 Brian Rosenberger (Brutex Network)
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 *
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 *   Licensed under the Apache License, Version 2.0 (the "License");
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 *   you may not use this file except in compliance with the License.
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 *   You may obtain a copy of the License at
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 *
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 *       http://www.apache.org/licenses/LICENSE-2.0
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 *
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 *   Unless required by applicable law or agreed to in writing, software
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 *   distributed under the License is distributed on an "AS IS" BASIS,
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 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 *   See the License for the specific language governing permissions and
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 *   limitations under the License.
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*/
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package net.brutex.xservices.security;
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import org.apache.log4j.Logger;
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import org.apache.shiro.authz.Permission;
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import org.apache.shiro.util.AntPathMatcher;
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/**
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 * @author Brian Rosenberger, bru(at)brutex.de
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 *
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 */
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public class DirectoryPermission implements Permission {
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	private final Logger logger = Logger.getLogger(DirectoryPermission.class);
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	private final String path;
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	public DirectoryPermission(String antlikepath) {
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		logger.debug(String.format("Creating permission for path '%s'", antlikepath));
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		path = antlikepath;
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	}
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	@Override
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	public boolean implies(Permission p) {
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		boolean result = false;
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		/* is of same type */
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		if(! (p instanceof DirectoryPermission)) {
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			logger.debug(String.format("Testing if permission of type '%s' implies permission of type '%s'. Result was '%s'"  , this.getClass(), p.getClass(), result));
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			return result;
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		}
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		/* comparing to non null directory */
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		if( ((DirectoryPermission)p).getPath() == null) {
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			logger.debug(String.format("Testing if DirectoryPermission '%s' implies permission to 'null'. Result was '%s'"  , this.getPath(), result));
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			return result;
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		}
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		/* directory pattern implies other */
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		if( (new AntPathMatcher()).matches(path, ((DirectoryPermission)p).getPath()) ) {
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			result = true;
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		}
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		logger.debug(String.format("Testing if DirectoryPermission '%s' implies permission to '%s'. Result was '%s'"  , this.getPath(), ((DirectoryPermission) p).getPath(), result));
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		return result;
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	}
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	public String getPath() {
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		return path;
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	}
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}