HBASE-10473 Add utility for adorning http Context

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1564928 13f79535-47bb-0310-9956-ffa450edef68

hbase-server/src/main/java/org/apache/hadoop/hbase/util/HttpServerUtil.java

@@ -0,0 +1,52 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.util;
+
+import org.mortbay.jetty.security.Constraint;
+import org.mortbay.jetty.security.ConstraintMapping;
+import org.mortbay.jetty.security.SecurityHandler;
+import org.mortbay.jetty.servlet.Context;
+
+/**
+ * HttpServer utility.
+ */
+public class HttpServerUtil {
+  /**
+   * Add constraints to a Jetty Context to disallow undesirable Http methods.
+   * @param context The context to modify
+   */
+  public static void constrainHttpMethods(Context context) {
+    Constraint c = new Constraint();
+    c.setAuthenticate(true);
+
+    ConstraintMapping cmt = new ConstraintMapping();
+    cmt.setConstraint(c);
+    cmt.setMethod("TRACE");
+    cmt.setPathSpec("/*");
+
+    ConstraintMapping cmo = new ConstraintMapping();
+    cmo.setConstraint(c);
+    cmo.setMethod("OPTIONS");
+    cmo.setPathSpec("/*");
+
+    SecurityHandler sh = new SecurityHandler();
+    sh.setConstraintMappings(new ConstraintMapping[]{ cmt, cmo });
+
+    context.addHandler(sh);
+  }
+}