CASC-66

added support for configuration via JNDI

cas-client-core/src/main/java/org/jasig/cas/client/util/AbstractConfigurationFilter.java

@@ -1,8 +1,13 @@
 package org.jasig.cas.client.util;
 
+import javax.naming.InitialContext;
+import javax.naming.NamingException;
 import javax.servlet.Filter;
 import javax.servlet.FilterConfig;
 
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
 /**
  * Abstracts out the ability to configure the filters from the initial properties provided.
  *
@@ -11,11 +16,15 @@ import javax.servlet.FilterConfig;
  * @since 3.1
  */
 public abstract class AbstractConfigurationFilter implements Filter {
+	
+	protected final Log log = LogFactory.getLog(getClass());
 
     /**
      * Retrieves the property from the FilterConfig.  First it checks the FilterConfig's initParameters to see if it
      * has a value.
-     * If it does, it returns that, otherwise it trieves the ServletContext's initParameters and returns that value if any.
+     * If it does, it returns that, otherwise it retrieves the ServletContext's initParameters and returns that value if any.
+     * <p>
+     * Finally, it will check JNDI if all other methods fail.  All the JNDI properties should be stored under java:comp/env/cas/{propertyName}
      *
      * @param filterConfig the Filter Configuration.
      * @param propertyName the property to retrieve.
@@ -34,8 +43,37 @@ public abstract class AbstractConfigurationFilter implements Filter {
         if (CommonUtils.isNotBlank(value2)) {
             return value2;
         }
+        InitialContext context = null;
+        try {
+         context = new InitialContext();
+        } catch (final NamingException e) {
+        	log.warn(e,e);
+        	return defaultValue;
+        }
+        
+        
+        final String shortName = this.getClass().getName().substring(this.getClass().getName().lastIndexOf(".")+1);
+        final String value3 = loadFromContext(context, "java:comp/env/cas/" + shortName + "/" + propertyName);
+        
+        if (CommonUtils.isNotBlank(value3)) {
+        	return value3;
+        }
+        
+        final String value4 = loadFromContext(context, "java:comp/env/cas/" + propertyName); 
+        
+        if (CommonUtils.isNotBlank(value4)) {
+        	return value4;
+        }
 
         return defaultValue;
     }
-
+    
+    protected final String loadFromContext(final InitialContext context, String path) {
+    	try {
+    		return (String) context.lookup(path);
+    	} catch (final NamingException e) {
+    		log.warn(e,e);
+    		return null;
+    	}
+    }
 }