SOLR-2631: PingRequestHandler should not allow to ping itsself using "qt" param to prevent infinite loop

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1142179 13f79535-47bb-0310-9956-ffa450edef68

solr/CHANGES.txt

@@ -297,6 +297,9 @@ Bug Fixes
 * SOLR-2625: TermVectorComponent throws NPE if TF-IDF option is used without DF
   option. (Daniel Erenrich, Simon Willnauer)
 
+* SOLR-2631: PingRequestHandler should not allow to ping itsself using "qt"
+  param to prevent infinite loop. (Edoardo Tosca, Uwe Schindler)
+
 Other Changes
 ----------------------
 

solr/src/java/org/apache/solr/handler/PingRequestHandler.java

@@ -56,6 +56,11 @@ public class PingRequestHandler extends RequestHandlerBase
           "Unknown RequestHandler: "+qt );
     }
     
+    if( handler instanceof PingRequestHandler ) {
+      throw new SolrException(SolrException.ErrorCode.BAD_REQUEST, 
+          "Cannot execute the PingRequestHandler recursively" );
+    }
+    
     // Execute the ping query and catch any possible exception
     Throwable ex = null;
     try {