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1   /**
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *     http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  package org.apache.hadoop.hbase.util;
19  
20  import org.mortbay.jetty.security.Constraint;
21  import org.mortbay.jetty.security.ConstraintMapping;
22  import org.mortbay.jetty.security.SecurityHandler;
23  import org.mortbay.jetty.servlet.Context;
24  
25  /**
26   * HttpServer utility.
27   */
28  public class HttpServerUtil {
29    /**
30     * Add constraints to a Jetty Context to disallow undesirable Http methods.
31     * @param context The context to modify
32     */
33    public static void constrainHttpMethods(Context context) {
34      Constraint c = new Constraint();
35      c.setAuthenticate(true);
36  
37      ConstraintMapping cmt = new ConstraintMapping();
38      cmt.setConstraint(c);
39      cmt.setMethod("TRACE");
40      cmt.setPathSpec("/*");
41  
42      ConstraintMapping cmo = new ConstraintMapping();
43      cmo.setConstraint(c);
44      cmo.setMethod("OPTIONS");
45      cmo.setPathSpec("/*");
46  
47      SecurityHandler sh = new SecurityHandler();
48      sh.setConstraintMappings(new ConstraintMapping[]{ cmt, cmo });
49  
50      context.addHandler(sh);
51    }
52  }