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| <FONT color="green">001</FONT> /*<a name="line.1"></a> |
| <FONT color="green">002</FONT> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <FONT color="green">003</FONT> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <FONT color="green">004</FONT> * distributed with this work for additional information<a name="line.4"></a> |
| <FONT color="green">005</FONT> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <FONT color="green">006</FONT> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <FONT color="green">007</FONT> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <FONT color="green">008</FONT> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <FONT color="green">009</FONT> *<a name="line.9"></a> |
| <FONT color="green">010</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <FONT color="green">011</FONT> *<a name="line.11"></a> |
| <FONT color="green">012</FONT> * Unless required by applicable law or agreed to in writing,<a name="line.12"></a> |
| <FONT color="green">013</FONT> * software distributed under the License is distributed on an<a name="line.13"></a> |
| <FONT color="green">014</FONT> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a> |
| <FONT color="green">015</FONT> * KIND, either express or implied. See the License for the<a name="line.15"></a> |
| <FONT color="green">016</FONT> * specific language governing permissions and limitations<a name="line.16"></a> |
| <FONT color="green">017</FONT> * under the License.<a name="line.17"></a> |
| <FONT color="green">018</FONT> */<a name="line.18"></a> |
| <FONT color="green">019</FONT> package org.apache.shiro.authc.pam;<a name="line.19"></a> |
| <FONT color="green">020</FONT> <a name="line.20"></a> |
| <FONT color="green">021</FONT> import org.apache.shiro.authc.AuthenticationException;<a name="line.21"></a> |
| <FONT color="green">022</FONT> import org.apache.shiro.authc.AuthenticationInfo;<a name="line.22"></a> |
| <FONT color="green">023</FONT> import org.apache.shiro.authc.AuthenticationToken;<a name="line.23"></a> |
| <FONT color="green">024</FONT> import org.apache.shiro.realm.Realm;<a name="line.24"></a> |
| <FONT color="green">025</FONT> <a name="line.25"></a> |
| <FONT color="green">026</FONT> import java.util.Collection;<a name="line.26"></a> |
| <FONT color="green">027</FONT> <a name="line.27"></a> |
| <FONT color="green">028</FONT> <a name="line.28"></a> |
| <FONT color="green">029</FONT> /**<a name="line.29"></a> |
| <FONT color="green">030</FONT> * A {@code AuthenticationStrategy} implementation assists the {@link ModularRealmAuthenticator} during the<a name="line.30"></a> |
| <FONT color="green">031</FONT> * log-in process in a pluggable realm (PAM) environment.<a name="line.31"></a> |
| <FONT color="green">032</FONT> *<a name="line.32"></a> |
| <FONT color="green">033</FONT> * <p>The {@code ModularRealmAuthenticator} will consult implementations of this interface on what to do during each<a name="line.33"></a> |
| <FONT color="green">034</FONT> * interaction with the configured Realms. This allows a pluggable strategy of whether or not an authentication<a name="line.34"></a> |
| <FONT color="green">035</FONT> * attempt must be successful for all realms, only 1 or more realms, no realms, etc.<a name="line.35"></a> |
| <FONT color="green">036</FONT> *<a name="line.36"></a> |
| <FONT color="green">037</FONT> * @see AllSuccessfulStrategy<a name="line.37"></a> |
| <FONT color="green">038</FONT> * @see AtLeastOneSuccessfulStrategy<a name="line.38"></a> |
| <FONT color="green">039</FONT> * @see FirstSuccessfulStrategy<a name="line.39"></a> |
| <FONT color="green">040</FONT> * @since 0.2<a name="line.40"></a> |
| <FONT color="green">041</FONT> */<a name="line.41"></a> |
| <FONT color="green">042</FONT> public interface AuthenticationStrategy {<a name="line.42"></a> |
| <FONT color="green">043</FONT> <a name="line.43"></a> |
| <FONT color="green">044</FONT> /**<a name="line.44"></a> |
| <FONT color="green">045</FONT> * Method invoked by the ModularAuthenticator signifying that the authentication process is about to begin for the<a name="line.45"></a> |
| <FONT color="green">046</FONT> * specified {@code token} - called before any {@code Realm} is actually invoked.<a name="line.46"></a> |
| <FONT color="green">047</FONT> *<a name="line.47"></a> |
| <FONT color="green">048</FONT> * <p>The {@code AuthenticationInfo} object returned from this method is essentially an empty place holder for<a name="line.48"></a> |
| <FONT color="green">049</FONT> * aggregating account data across multiple realms. It should be populated by the strategy implementation over the<a name="line.49"></a> |
| <FONT color="green">050</FONT> * course of authentication attempts across the multiple realms. It will be passed into the<a name="line.50"></a> |
| <FONT color="green">051</FONT> * {@link #beforeAttempt} calls, allowing inspection of the aggregated account data up to that point in the<a name="line.51"></a> |
| <FONT color="green">052</FONT> * multi-realm authentication, allowing any logic to be executed accordingly.<a name="line.52"></a> |
| <FONT color="green">053</FONT> *<a name="line.53"></a> |
| <FONT color="green">054</FONT> * @param realms the Realms that will be consulted during the authentication process for the specified token.<a name="line.54"></a> |
| <FONT color="green">055</FONT> * @param token the Principal/Credential representation to be used during authentication for a corresponding subject.<a name="line.55"></a> |
| <FONT color="green">056</FONT> * @return an empty AuthenticationInfo object that will populated with data from multiple realms.<a name="line.56"></a> |
| <FONT color="green">057</FONT> * @throws AuthenticationException if the strategy implementation does not wish the Authentication attempt to execute.<a name="line.57"></a> |
| <FONT color="green">058</FONT> */<a name="line.58"></a> |
| <FONT color="green">059</FONT> AuthenticationInfo beforeAllAttempts(Collection<? extends Realm> realms, AuthenticationToken token) throws AuthenticationException;<a name="line.59"></a> |
| <FONT color="green">060</FONT> <a name="line.60"></a> |
| <FONT color="green">061</FONT> /**<a name="line.61"></a> |
| <FONT color="green">062</FONT> * Method invoked by the ModularAuthenticator just prior to the realm being consulted for account data,<a name="line.62"></a> |
| <FONT color="green">063</FONT> * allowing pre-authentication-attempt logic for that realm only.<a name="line.63"></a> |
| <FONT color="green">064</FONT> *<a name="line.64"></a> |
| <FONT color="green">065</FONT> * <p>This method returns an {@code AuthenticationInfo} object that will be used for further interaction with realms. Most<a name="line.65"></a> |
| <FONT color="green">066</FONT> * implementations will merely return the {@code aggregate} method argument if they don't have a need to<a name="line.66"></a> |
| <FONT color="green">067</FONT> * manipulate it.<a name="line.67"></a> |
| <FONT color="green">068</FONT> *<a name="line.68"></a> |
| <FONT color="green">069</FONT> * @param realm the realm that will be consulted for {@code AuthenticationInfo} for the specified {@code token}.<a name="line.69"></a> |
| <FONT color="green">070</FONT> * @param token the {@code AuthenticationToken} submitted for the subject attempting system log-in.<a name="line.70"></a> |
| <FONT color="green">071</FONT> * @param aggregate the aggregated AuthenticationInfo object being used across the multi-realm authentication attempt<a name="line.71"></a> |
| <FONT color="green">072</FONT> * @return the AuthenticationInfo object that will be presented to further realms in the authentication process - returning<a name="line.72"></a> |
| <FONT color="green">073</FONT> * the {@code aggregate} method argument is the normal case if no special action needs to be taken.<a name="line.73"></a> |
| <FONT color="green">074</FONT> * @throws org.apache.shiro.authc.AuthenticationException<a name="line.74"></a> |
| <FONT color="green">075</FONT> * an exception thrown by the Strategy implementation if it wishes the login<a name="line.75"></a> |
| <FONT color="green">076</FONT> * process for the associated subject (user) to stop immediately.<a name="line.76"></a> |
| <FONT color="green">077</FONT> */<a name="line.77"></a> |
| <FONT color="green">078</FONT> AuthenticationInfo beforeAttempt(Realm realm, AuthenticationToken token, AuthenticationInfo aggregate) throws AuthenticationException;<a name="line.78"></a> |
| <FONT color="green">079</FONT> <a name="line.79"></a> |
| <FONT color="green">080</FONT> /**<a name="line.80"></a> |
| <FONT color="green">081</FONT> * Method invoked by the ModularAuthenticator just after the given realm has been consulted for authentication,<a name="line.81"></a> |
| <FONT color="green">082</FONT> * allowing post-authentication-attempt logic for that realm only.<a name="line.82"></a> |
| <FONT color="green">083</FONT> *<a name="line.83"></a> |
| <FONT color="green">084</FONT> * <p>This method returns an {@code AuthenticationInfo} object that will be used for further interaction with realms. Most<a name="line.84"></a> |
| <FONT color="green">085</FONT> * implementations will merge the {@code singleRealmInfo} into the {@code aggregateInfo} and<a name="line.85"></a> |
| <FONT color="green">086</FONT> * just return the {@code aggregateInfo} for continued use throughout the authentication process.</p><a name="line.86"></a> |
| <FONT color="green">087</FONT> *<a name="line.87"></a> |
| <FONT color="green">088</FONT> * @param realm the realm that was just consulted for {@code AuthenticationInfo} for the given {@code token}.<a name="line.88"></a> |
| <FONT color="green">089</FONT> * @param token the {@code AuthenticationToken} submitted for the subject attempting system log-in.<a name="line.89"></a> |
| <FONT color="green">090</FONT> * @param singleRealmInfo the info returned from a single realm.<a name="line.90"></a> |
| <FONT color="green">091</FONT> * @param aggregateInfo the aggregate info representing all realms in a multi-realm environment.<a name="line.91"></a> |
| <FONT color="green">092</FONT> * @param t the Throwable thrown by the Realm during the attempt, or {@code null} if the method returned normally.<a name="line.92"></a> |
| <FONT color="green">093</FONT> * @return the AuthenticationInfo object that will be presented to further realms in the authentication process - returning<a name="line.93"></a> |
| <FONT color="green">094</FONT> * the {@code aggregateAccount} method argument is the normal case if no special action needs to be taken.<a name="line.94"></a> |
| <FONT color="green">095</FONT> * @throws AuthenticationException an exception thrown by the Strategy implementation if it wishes the login process<a name="line.95"></a> |
| <FONT color="green">096</FONT> * for the associated subject (user) to stop immediately.<a name="line.96"></a> |
| <FONT color="green">097</FONT> */<a name="line.97"></a> |
| <FONT color="green">098</FONT> AuthenticationInfo afterAttempt(Realm realm, AuthenticationToken token, AuthenticationInfo singleRealmInfo, AuthenticationInfo aggregateInfo, Throwable t)<a name="line.98"></a> |
| <FONT color="green">099</FONT> throws AuthenticationException;<a name="line.99"></a> |
| <FONT color="green">100</FONT> <a name="line.100"></a> |
| <FONT color="green">101</FONT> /**<a name="line.101"></a> |
| <FONT color="green">102</FONT> * Method invoked by the ModularAuthenticator signifying that all of its configured Realms have been consulted<a name="line.102"></a> |
| <FONT color="green">103</FONT> * for account data, allowing post-proccessing after all realms have completed.<a name="line.103"></a> |
| <FONT color="green">104</FONT> *<a name="line.104"></a> |
| <FONT color="green">105</FONT> * <p>Returns the final AuthenticationInfo object that will be returned from the Authenticator to the authenticate() caller.<a name="line.105"></a> |
| <FONT color="green">106</FONT> * This is most likely the aggregate AuthenticationInfo object that has been populated by many realms, but the actual return value is<a name="line.106"></a> |
| <FONT color="green">107</FONT> * always up to the implementation.<a name="line.107"></a> |
| <FONT color="green">108</FONT> *<a name="line.108"></a> |
| <FONT color="green">109</FONT> * @param token the {@code AuthenticationToken} submitted for the subject attempting system log-in.<a name="line.109"></a> |
| <FONT color="green">110</FONT> * @param aggregate the aggregate {@code AuthenticationInfo} instance populated by all realms during the log-in attempt.<a name="line.110"></a> |
| <FONT color="green">111</FONT> * @return the final {@code AuthenticationInfo} object to return to the Authenticator.authenticate() caller.<a name="line.111"></a> |
| <FONT color="green">112</FONT> * @throws AuthenticationException if the Strategy implementation wishes to fail the authentication attempt.<a name="line.112"></a> |
| <FONT color="green">113</FONT> */<a name="line.113"></a> |
| <FONT color="green">114</FONT> AuthenticationInfo afterAllAttempts(AuthenticationToken token, AuthenticationInfo aggregate) throws AuthenticationException;<a name="line.114"></a> |
| <FONT color="green">115</FONT> }<a name="line.115"></a> |
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| </PRE> |
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