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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;<a name="line.19"></a> |
| <FONT color="green">020</FONT> <a name="line.20"></a> |
| <FONT color="green">021</FONT> import org.apache.shiro.subject.PrincipalCollection;<a name="line.21"></a> |
| <FONT color="green">022</FONT> import org.slf4j.Logger;<a name="line.22"></a> |
| <FONT color="green">023</FONT> import org.slf4j.LoggerFactory;<a name="line.23"></a> |
| <FONT color="green">024</FONT> <a name="line.24"></a> |
| <FONT color="green">025</FONT> import java.util.ArrayList;<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> * Superclass for almost all {@link Authenticator} implementations that performs the common work around authentication<a name="line.30"></a> |
| <FONT color="green">031</FONT> * attempts.<a name="line.31"></a> |
| <FONT color="green">032</FONT> * <p/><a name="line.32"></a> |
| <FONT color="green">033</FONT> * This class delegates the actual authentication attempt to subclasses but supports notification for<a name="line.33"></a> |
| <FONT color="green">034</FONT> * successful and failed logins as well as logouts. Notification is sent to one or more registered<a name="line.34"></a> |
| <FONT color="green">035</FONT> * {@link AuthenticationListener AuthenticationListener}s to allow for custom processing logic<a name="line.35"></a> |
| <FONT color="green">036</FONT> * when these conditions occur.<a name="line.36"></a> |
| <FONT color="green">037</FONT> * <p/><a name="line.37"></a> |
| <FONT color="green">038</FONT> * In most cases, the only thing a subclass needs to do (via its {@link #doAuthenticate} implementation)<a name="line.38"></a> |
| <FONT color="green">039</FONT> * is perform the actual principal/credential verification process for the submitted {@code AuthenticationToken}.<a name="line.39"></a> |
| <FONT color="green">040</FONT> *<a name="line.40"></a> |
| <FONT color="green">041</FONT> * @since 0.1<a name="line.41"></a> |
| <FONT color="green">042</FONT> */<a name="line.42"></a> |
| <FONT color="green">043</FONT> public abstract class AbstractAuthenticator implements Authenticator, LogoutAware {<a name="line.43"></a> |
| <FONT color="green">044</FONT> <a name="line.44"></a> |
| <FONT color="green">045</FONT> /*-------------------------------------------<a name="line.45"></a> |
| <FONT color="green">046</FONT> | C O N S T A N T S |<a name="line.46"></a> |
| <FONT color="green">047</FONT> ============================================*/<a name="line.47"></a> |
| <FONT color="green">048</FONT> /**<a name="line.48"></a> |
| <FONT color="green">049</FONT> * Private class log instance.<a name="line.49"></a> |
| <FONT color="green">050</FONT> */<a name="line.50"></a> |
| <FONT color="green">051</FONT> private static final Logger log = LoggerFactory.getLogger(AbstractAuthenticator.class);<a name="line.51"></a> |
| <FONT color="green">052</FONT> <a name="line.52"></a> |
| <FONT color="green">053</FONT> /*-------------------------------------------<a name="line.53"></a> |
| <FONT color="green">054</FONT> | I N S T A N C E V A R I A B L E S |<a name="line.54"></a> |
| <FONT color="green">055</FONT> ============================================*/<a name="line.55"></a> |
| <FONT color="green">056</FONT> /**<a name="line.56"></a> |
| <FONT color="green">057</FONT> * Any registered listeners that wish to know about things during the authentication process.<a name="line.57"></a> |
| <FONT color="green">058</FONT> */<a name="line.58"></a> |
| <FONT color="green">059</FONT> private Collection<AuthenticationListener> listeners;<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> | C O N S T R U C T O R S |<a name="line.62"></a> |
| <FONT color="green">063</FONT> ============================================*/<a name="line.63"></a> |
| <FONT color="green">064</FONT> <a name="line.64"></a> |
| <FONT color="green">065</FONT> /**<a name="line.65"></a> |
| <FONT color="green">066</FONT> * Default no-argument constructor. Ensures the internal<a name="line.66"></a> |
| <FONT color="green">067</FONT> * {@link AuthenticationListener AuthenticationListener} collection is a non-null {@code ArrayList}.<a name="line.67"></a> |
| <FONT color="green">068</FONT> */<a name="line.68"></a> |
| <FONT color="green">069</FONT> public AbstractAuthenticator() {<a name="line.69"></a> |
| <FONT color="green">070</FONT> listeners = new ArrayList<AuthenticationListener>();<a name="line.70"></a> |
| <FONT color="green">071</FONT> }<a name="line.71"></a> |
| <FONT color="green">072</FONT> <a name="line.72"></a> |
| <FONT color="green">073</FONT> /*--------------------------------------------<a name="line.73"></a> |
| <FONT color="green">074</FONT> | A C C E S S O R S / M O D I F I E R S |<a name="line.74"></a> |
| <FONT color="green">075</FONT> ============================================*/<a name="line.75"></a> |
| <FONT color="green">076</FONT> <a name="line.76"></a> |
| <FONT color="green">077</FONT> /**<a name="line.77"></a> |
| <FONT color="green">078</FONT> * Sets the {@link AuthenticationListener AuthenticationListener}s that should be notified during authentication<a name="line.78"></a> |
| <FONT color="green">079</FONT> * attempts.<a name="line.79"></a> |
| <FONT color="green">080</FONT> *<a name="line.80"></a> |
| <FONT color="green">081</FONT> * @param listeners one or more {@code AuthenticationListener}s that should be notified due to an<a name="line.81"></a> |
| <FONT color="green">082</FONT> * authentication attempt.<a name="line.82"></a> |
| <FONT color="green">083</FONT> */<a name="line.83"></a> |
| <FONT color="green">084</FONT> @SuppressWarnings({"UnusedDeclaration"})<a name="line.84"></a> |
| <FONT color="green">085</FONT> public void setAuthenticationListeners(Collection<AuthenticationListener> listeners) {<a name="line.85"></a> |
| <FONT color="green">086</FONT> if (listeners == null) {<a name="line.86"></a> |
| <FONT color="green">087</FONT> this.listeners = new ArrayList<AuthenticationListener>();<a name="line.87"></a> |
| <FONT color="green">088</FONT> } else {<a name="line.88"></a> |
| <FONT color="green">089</FONT> this.listeners = listeners;<a name="line.89"></a> |
| <FONT color="green">090</FONT> }<a name="line.90"></a> |
| <FONT color="green">091</FONT> }<a name="line.91"></a> |
| <FONT color="green">092</FONT> <a name="line.92"></a> |
| <FONT color="green">093</FONT> /**<a name="line.93"></a> |
| <FONT color="green">094</FONT> * Returns the {@link AuthenticationListener AuthenticationListener}s that should be notified during authentication<a name="line.94"></a> |
| <FONT color="green">095</FONT> * attempts.<a name="line.95"></a> |
| <FONT color="green">096</FONT> *<a name="line.96"></a> |
| <FONT color="green">097</FONT> * @return the {@link AuthenticationListener AuthenticationListener}s that should be notified during authentication<a name="line.97"></a> |
| <FONT color="green">098</FONT> * attempts.<a name="line.98"></a> |
| <FONT color="green">099</FONT> */<a name="line.99"></a> |
| <FONT color="green">100</FONT> @SuppressWarnings({"UnusedDeclaration"})<a name="line.100"></a> |
| <FONT color="green">101</FONT> public Collection<AuthenticationListener> getAuthenticationListeners() {<a name="line.101"></a> |
| <FONT color="green">102</FONT> return this.listeners;<a name="line.102"></a> |
| <FONT color="green">103</FONT> }<a name="line.103"></a> |
| <FONT color="green">104</FONT> <a name="line.104"></a> |
| <FONT color="green">105</FONT> /*-------------------------------------------<a name="line.105"></a> |
| <FONT color="green">106</FONT> | M E T H O D S |<a name="line.106"></a> |
| <FONT color="green">107</FONT> ============================================*/<a name="line.107"></a> |
| <FONT color="green">108</FONT> <a name="line.108"></a> |
| <FONT color="green">109</FONT> /**<a name="line.109"></a> |
| <FONT color="green">110</FONT> * Notifies any registered {@link AuthenticationListener AuthenticationListener}s that<a name="line.110"></a> |
| <FONT color="green">111</FONT> * authentication was successful for the specified {@code token} which resulted in the specified<a name="line.111"></a> |
| <FONT color="green">112</FONT> * {@code info}. This implementation merely iterates over the internal {@code listeners} collection and<a name="line.112"></a> |
| <FONT color="green">113</FONT> * calls {@link AuthenticationListener#onSuccess(AuthenticationToken, AuthenticationInfo) onSuccess}<a name="line.113"></a> |
| <FONT color="green">114</FONT> * for each.<a name="line.114"></a> |
| <FONT color="green">115</FONT> *<a name="line.115"></a> |
| <FONT color="green">116</FONT> * @param token the submitted {@code AuthenticationToken} that resulted in a successful authentication.<a name="line.116"></a> |
| <FONT color="green">117</FONT> * @param info the returned {@code AuthenticationInfo} resulting from the successful authentication.<a name="line.117"></a> |
| <FONT color="green">118</FONT> */<a name="line.118"></a> |
| <FONT color="green">119</FONT> protected void notifySuccess(AuthenticationToken token, AuthenticationInfo info) {<a name="line.119"></a> |
| <FONT color="green">120</FONT> for (AuthenticationListener listener : this.listeners) {<a name="line.120"></a> |
| <FONT color="green">121</FONT> listener.onSuccess(token, info);<a name="line.121"></a> |
| <FONT color="green">122</FONT> }<a name="line.122"></a> |
| <FONT color="green">123</FONT> }<a name="line.123"></a> |
| <FONT color="green">124</FONT> <a name="line.124"></a> |
| <FONT color="green">125</FONT> /**<a name="line.125"></a> |
| <FONT color="green">126</FONT> * Notifies any registered {@link AuthenticationListener AuthenticationListener}s that<a name="line.126"></a> |
| <FONT color="green">127</FONT> * authentication failed for the<a name="line.127"></a> |
| <FONT color="green">128</FONT> * specified {@code token} which resulted in the specified {@code ae} exception. This implementation merely<a name="line.128"></a> |
| <FONT color="green">129</FONT> * iterates over the internal {@code listeners} collection and calls<a name="line.129"></a> |
| <FONT color="green">130</FONT> * {@link AuthenticationListener#onFailure(AuthenticationToken, AuthenticationException) onFailure}<a name="line.130"></a> |
| <FONT color="green">131</FONT> * for each.<a name="line.131"></a> |
| <FONT color="green">132</FONT> *<a name="line.132"></a> |
| <FONT color="green">133</FONT> * @param token the submitted {@code AuthenticationToken} that resulted in a failed authentication.<a name="line.133"></a> |
| <FONT color="green">134</FONT> * @param ae the resulting {@code AuthenticationException} that caused the authentication to fail.<a name="line.134"></a> |
| <FONT color="green">135</FONT> */<a name="line.135"></a> |
| <FONT color="green">136</FONT> protected void notifyFailure(AuthenticationToken token, AuthenticationException ae) {<a name="line.136"></a> |
| <FONT color="green">137</FONT> for (AuthenticationListener listener : this.listeners) {<a name="line.137"></a> |
| <FONT color="green">138</FONT> listener.onFailure(token, ae);<a name="line.138"></a> |
| <FONT color="green">139</FONT> }<a name="line.139"></a> |
| <FONT color="green">140</FONT> }<a name="line.140"></a> |
| <FONT color="green">141</FONT> <a name="line.141"></a> |
| <FONT color="green">142</FONT> /**<a name="line.142"></a> |
| <FONT color="green">143</FONT> * Notifies any registered {@link AuthenticationListener AuthenticationListener}s that a<a name="line.143"></a> |
| <FONT color="green">144</FONT> * {@code Subject} has logged-out. This implementation merely<a name="line.144"></a> |
| <FONT color="green">145</FONT> * iterates over the internal {@code listeners} collection and calls<a name="line.145"></a> |
| <FONT color="green">146</FONT> * {@link AuthenticationListener#onLogout(org.apache.shiro.subject.PrincipalCollection) onLogout}<a name="line.146"></a> |
| <FONT color="green">147</FONT> * for each.<a name="line.147"></a> |
| <FONT color="green">148</FONT> *<a name="line.148"></a> |
| <FONT color="green">149</FONT> * @param principals the identifying principals of the {@code Subject}/account logging out.<a name="line.149"></a> |
| <FONT color="green">150</FONT> */<a name="line.150"></a> |
| <FONT color="green">151</FONT> protected void notifyLogout(PrincipalCollection principals) {<a name="line.151"></a> |
| <FONT color="green">152</FONT> for (AuthenticationListener listener : this.listeners) {<a name="line.152"></a> |
| <FONT color="green">153</FONT> listener.onLogout(principals);<a name="line.153"></a> |
| <FONT color="green">154</FONT> }<a name="line.154"></a> |
| <FONT color="green">155</FONT> }<a name="line.155"></a> |
| <FONT color="green">156</FONT> <a name="line.156"></a> |
| <FONT color="green">157</FONT> /**<a name="line.157"></a> |
| <FONT color="green">158</FONT> * This implementation merely calls<a name="line.158"></a> |
| <FONT color="green">159</FONT> * {@link #notifyLogout(org.apache.shiro.subject.PrincipalCollection) notifyLogout} to allow any registered listeners<a name="line.159"></a> |
| <FONT color="green">160</FONT> * to react to the logout.<a name="line.160"></a> |
| <FONT color="green">161</FONT> *<a name="line.161"></a> |
| <FONT color="green">162</FONT> * @param principals the identifying principals of the {@code Subject}/account logging out.<a name="line.162"></a> |
| <FONT color="green">163</FONT> */<a name="line.163"></a> |
| <FONT color="green">164</FONT> public void onLogout(PrincipalCollection principals) {<a name="line.164"></a> |
| <FONT color="green">165</FONT> notifyLogout(principals);<a name="line.165"></a> |
| <FONT color="green">166</FONT> }<a name="line.166"></a> |
| <FONT color="green">167</FONT> <a name="line.167"></a> |
| <FONT color="green">168</FONT> /**<a name="line.168"></a> |
| <FONT color="green">169</FONT> * Implementation of the {@link Authenticator} interface that functions in the following manner:<a name="line.169"></a> |
| <FONT color="green">170</FONT> * <ol><a name="line.170"></a> |
| <FONT color="green">171</FONT> * <li>Calls template {@link #doAuthenticate doAuthenticate} method for subclass execution of the actual<a name="line.171"></a> |
| <FONT color="green">172</FONT> * authentication behavior.</li><a name="line.172"></a> |
| <FONT color="green">173</FONT> * <li>If an {@code AuthenticationException} is thrown during {@code doAuthenticate},<a name="line.173"></a> |
| <FONT color="green">174</FONT> * {@link #notifyFailure(AuthenticationToken, AuthenticationException) notify} any registered<a name="line.174"></a> |
| <FONT color="green">175</FONT> * {@link AuthenticationListener AuthenticationListener}s of the exception and then propogate the exception<a name="line.175"></a> |
| <FONT color="green">176</FONT> * for the caller to handle.</li><a name="line.176"></a> |
| <FONT color="green">177</FONT> * <li>If no exception is thrown (indicating a successful login),<a name="line.177"></a> |
| <FONT color="green">178</FONT> * {@link #notifySuccess(AuthenticationToken, AuthenticationInfo) notify} any registered<a name="line.178"></a> |
| <FONT color="green">179</FONT> * {@link AuthenticationListener AuthenticationListener}s of the successful attempt.</li><a name="line.179"></a> |
| <FONT color="green">180</FONT> * <li>Return the {@code AuthenticationInfo}</li><a name="line.180"></a> |
| <FONT color="green">181</FONT> * </ol><a name="line.181"></a> |
| <FONT color="green">182</FONT> *<a name="line.182"></a> |
| <FONT color="green">183</FONT> * @param token the submitted token representing the subject's (user's) login principals and credentials.<a name="line.183"></a> |
| <FONT color="green">184</FONT> * @return the AuthenticationInfo referencing the authenticated user's account data.<a name="line.184"></a> |
| <FONT color="green">185</FONT> * @throws AuthenticationException if there is any problem during the authentication process - see the<a name="line.185"></a> |
| <FONT color="green">186</FONT> * interface's JavaDoc for a more detailed explanation.<a name="line.186"></a> |
| <FONT color="green">187</FONT> */<a name="line.187"></a> |
| <FONT color="green">188</FONT> public final AuthenticationInfo authenticate(AuthenticationToken token) throws AuthenticationException {<a name="line.188"></a> |
| <FONT color="green">189</FONT> <a name="line.189"></a> |
| <FONT color="green">190</FONT> if (token == null) {<a name="line.190"></a> |
| <FONT color="green">191</FONT> throw new IllegalArgumentException("Method argumet (authentication token) cannot be null.");<a name="line.191"></a> |
| <FONT color="green">192</FONT> }<a name="line.192"></a> |
| <FONT color="green">193</FONT> <a name="line.193"></a> |
| <FONT color="green">194</FONT> log.trace("Authentication attempt received for token [{}]", token);<a name="line.194"></a> |
| <FONT color="green">195</FONT> <a name="line.195"></a> |
| <FONT color="green">196</FONT> AuthenticationInfo info;<a name="line.196"></a> |
| <FONT color="green">197</FONT> try {<a name="line.197"></a> |
| <FONT color="green">198</FONT> info = doAuthenticate(token);<a name="line.198"></a> |
| <FONT color="green">199</FONT> if (info == null) {<a name="line.199"></a> |
| <FONT color="green">200</FONT> String msg = "No account information found for authentication token [" + token + "] by this " +<a name="line.200"></a> |
| <FONT color="green">201</FONT> "Authenticator instance. Please check that it is configured correctly.";<a name="line.201"></a> |
| <FONT color="green">202</FONT> throw new AuthenticationException(msg);<a name="line.202"></a> |
| <FONT color="green">203</FONT> }<a name="line.203"></a> |
| <FONT color="green">204</FONT> } catch (Throwable t) {<a name="line.204"></a> |
| <FONT color="green">205</FONT> AuthenticationException ae = null;<a name="line.205"></a> |
| <FONT color="green">206</FONT> if (t instanceof AuthenticationException) {<a name="line.206"></a> |
| <FONT color="green">207</FONT> ae = (AuthenticationException) t;<a name="line.207"></a> |
| <FONT color="green">208</FONT> }<a name="line.208"></a> |
| <FONT color="green">209</FONT> if (ae == null) {<a name="line.209"></a> |
| <FONT color="green">210</FONT> //Exception thrown was not an expected AuthenticationException. Therefore it is probably a little more<a name="line.210"></a> |
| <FONT color="green">211</FONT> //severe or unexpected. So, wrap in an AuthenticationException, log to warn, and propagate:<a name="line.211"></a> |
| <FONT color="green">212</FONT> String msg = "Authentication failed for token submission [" + token + "]. Possible unexpected " +<a name="line.212"></a> |
| <FONT color="green">213</FONT> "error? (Typical or expected login exceptions should extend from AuthenticationException).";<a name="line.213"></a> |
| <FONT color="green">214</FONT> ae = new AuthenticationException(msg, t);<a name="line.214"></a> |
| <FONT color="green">215</FONT> }<a name="line.215"></a> |
| <FONT color="green">216</FONT> try {<a name="line.216"></a> |
| <FONT color="green">217</FONT> notifyFailure(token, ae);<a name="line.217"></a> |
| <FONT color="green">218</FONT> } catch (Throwable t2) {<a name="line.218"></a> |
| <FONT color="green">219</FONT> if (log.isWarnEnabled()) {<a name="line.219"></a> |
| <FONT color="green">220</FONT> String msg = "Unable to send notification for failed authentication attempt - listener error?. " +<a name="line.220"></a> |
| <FONT color="green">221</FONT> "Please check your AuthenticationListener implementation(s). Logging sending exception " +<a name="line.221"></a> |
| <FONT color="green">222</FONT> "and propagating original AuthenticationException instead...";<a name="line.222"></a> |
| <FONT color="green">223</FONT> log.warn(msg, t2);<a name="line.223"></a> |
| <FONT color="green">224</FONT> }<a name="line.224"></a> |
| <FONT color="green">225</FONT> }<a name="line.225"></a> |
| <FONT color="green">226</FONT> <a name="line.226"></a> |
| <FONT color="green">227</FONT> <a name="line.227"></a> |
| <FONT color="green">228</FONT> throw ae;<a name="line.228"></a> |
| <FONT color="green">229</FONT> }<a name="line.229"></a> |
| <FONT color="green">230</FONT> <a name="line.230"></a> |
| <FONT color="green">231</FONT> log.debug("Authentication successful for token [{}]. Returned account [{}]", token, info);<a name="line.231"></a> |
| <FONT color="green">232</FONT> <a name="line.232"></a> |
| <FONT color="green">233</FONT> notifySuccess(token, info);<a name="line.233"></a> |
| <FONT color="green">234</FONT> <a name="line.234"></a> |
| <FONT color="green">235</FONT> return info;<a name="line.235"></a> |
| <FONT color="green">236</FONT> }<a name="line.236"></a> |
| <FONT color="green">237</FONT> <a name="line.237"></a> |
| <FONT color="green">238</FONT> /**<a name="line.238"></a> |
| <FONT color="green">239</FONT> * Template design pattern hook for subclasses to implement specific authentication behavior.<a name="line.239"></a> |
| <FONT color="green">240</FONT> * <p/><a name="line.240"></a> |
| <FONT color="green">241</FONT> * Common behavior for most authentication attempts is encapsulated in the<a name="line.241"></a> |
| <FONT color="green">242</FONT> * {@link #authenticate} method and that method invokes this one for custom behavior.<a name="line.242"></a> |
| <FONT color="green">243</FONT> * <p/><a name="line.243"></a> |
| <FONT color="green">244</FONT> * <b>N.B.</b> Subclasses <em>should</em> throw some kind of<a name="line.244"></a> |
| <FONT color="green">245</FONT> * {@code AuthenticationException} if there is a problem during<a name="line.245"></a> |
| <FONT color="green">246</FONT> * authentication instead of returning {@code null}. A {@code null} return value indicates<a name="line.246"></a> |
| <FONT color="green">247</FONT> * a configuration or programming error, since {@code AuthenticationException}s should<a name="line.247"></a> |
| <FONT color="green">248</FONT> * indicate any expected problem (such as an unknown account or username, or invalid password, etc).<a name="line.248"></a> |
| <FONT color="green">249</FONT> *<a name="line.249"></a> |
| <FONT color="green">250</FONT> * @param token the authentication token encapsulating the user's login information.<a name="line.250"></a> |
| <FONT color="green">251</FONT> * @return an {@code AuthenticationInfo} object encapsulating the user's account information<a name="line.251"></a> |
| <FONT color="green">252</FONT> * important to Shiro.<a name="line.252"></a> |
| <FONT color="green">253</FONT> * @throws AuthenticationException if there is a problem logging in the user.<a name="line.253"></a> |
| <FONT color="green">254</FONT> */<a name="line.254"></a> |
| <FONT color="green">255</FONT> protected abstract AuthenticationInfo doAuthenticate(AuthenticationToken token)<a name="line.255"></a> |
| <FONT color="green">256</FONT> throws AuthenticationException;<a name="line.256"></a> |
| <FONT color="green">257</FONT> <a name="line.257"></a> |
| <FONT color="green">258</FONT> <a name="line.258"></a> |
| <FONT color="green">259</FONT> }<a name="line.259"></a> |
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| </PRE> |
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