Add JndiInjection Sanitizer Class

Author: Salah Baddou

java/ql/lib/semmle/code/java/security/JndiInjectionQuery.qll

@@ -17,14 +17,22 @@ class JndiInjectionFlowConfig extends TaintTracking::Configuration {
   override predicate isSink(DataFlow::Node sink) { sink instanceof JndiInjectionSink }
 
   override predicate isSanitizer(DataFlow::Node node) {
-    node.getType() instanceof PrimitiveType or node.getType() instanceof BoxedType
+    node.getType() instanceof PrimitiveType or node.getType() instanceof BoxedType 
+    or
+    node instanceof JndiInjectionSanitizer
   }
 
   override predicate isAdditionalTaintStep(DataFlow::Node node1, DataFlow::Node node2) {
     any(JndiInjectionAdditionalTaintStep c).step(node1, node2)
   }
 }
 
+/**
+ * A Class to be extended for Sanitizer Customizations 
+ */
+
+abstract class JndiInjectionSanitizer extends DataFlow::Node { }
+
 /**
  * A method that does a JNDI lookup when it receives a `SearchControls` argument with `setReturningObjFlag` = `true`
  */