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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing,<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * software distributed under the License is distributed on an<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * KIND, either express or implied. See the License for the<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * specific language governing permissions and limitations<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * under the License.<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> */<a name="line.18"></a> |
| <span class="sourceLineNo">019</span>package org.apache.shiro.authz.permission;<a name="line.19"></a> |
| <span class="sourceLineNo">020</span><a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import org.apache.shiro.authz.Permission;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span><a name="line.22"></a> |
| <span class="sourceLineNo">023</span>/**<a name="line.23"></a> |
| <span class="sourceLineNo">024</span> * A {@code PermisisonResolver} resolves a String value and converts it into a<a name="line.24"></a> |
| <span class="sourceLineNo">025</span> * {@link org.apache.shiro.authz.Permission Permission} instance.<a name="line.25"></a> |
| <span class="sourceLineNo">026</span> * <p/><a name="line.26"></a> |
| <span class="sourceLineNo">027</span> * The default {@link WildcardPermissionResolver} should be<a name="line.27"></a> |
| <span class="sourceLineNo">028</span> * suitable for most purposes, which constructs {@link WildcardPermission} objects.<a name="line.28"></a> |
| <span class="sourceLineNo">029</span> * However, any resolver may be configured if an application wishes to use different<a name="line.29"></a> |
| <span class="sourceLineNo">030</span> * {@link org.apache.shiro.authz.Permission} implementations.<a name="line.30"></a> |
| <span class="sourceLineNo">031</span> * <p/><a name="line.31"></a> |
| <span class="sourceLineNo">032</span> * A {@code PermissionResolver} is used by many Shiro components such as annotations, property file<a name="line.32"></a> |
| <span class="sourceLineNo">033</span> * configuration, URL configuration, etc. It is useful whenever a String representation of a permission is specified<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> * and that String needs to be converted to a Permission instance before executing a security check.<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> * <p/><a name="line.35"></a> |
| <span class="sourceLineNo">036</span> * Shiro chooses to support {@link WildcardPermission Wildcardpermission}s by default in almost all components and<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> * we do that in the form of the {@link WildcardPermissionResolver WildcardPermissionResolver}. One of the nice<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * things about {@code WildcardPermission}s being supported by default is that it makes it very easy to<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * store complex permissions in the database - and also makes it very easy to represent permissions in JSP files,<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * annotations, etc., where a simple string representation is useful.<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * <p/><a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * Although this happens to be the Shiro default, you are of course free to provide custom<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * String-to-Permission conversion by providing Shiro components any instance of this interface.<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> *<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> * @see org.apache.shiro.authz.ModularRealmAuthorizer#setPermissionResolver(PermissionResolver) ModularRealmAuthorizer.setPermissionResolver<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> * @see org.apache.shiro.realm.AuthorizingRealm#setPermissionResolver(PermissionResolver) AuthorizingRealm.setPermissionResolver<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> * @see PermissionResolverAware PermissionResolverAware<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> * @since 0.9<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> */<a name="line.49"></a> |
| <span class="sourceLineNo">050</span>public interface PermissionResolver {<a name="line.50"></a> |
| <span class="sourceLineNo">051</span><a name="line.51"></a> |
| <span class="sourceLineNo">052</span> /**<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * Resolves a Permission based on the given String representation.<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> *<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * @param permissionString the String representation of a permission.<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * @return A Permission object that can be used internally to determine a subject's permissions.<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * @throws InvalidPermissionStringException<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> * if the permission string is not valid for this resolver.<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> */<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> Permission resolvePermission(String permissionString);<a name="line.60"></a> |
| <span class="sourceLineNo">061</span><a name="line.61"></a> |
| <span class="sourceLineNo">062</span>}<a name="line.62"></a> |
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