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1   /*
2    * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4    *
5    * This code is free software; you can redistribute it and/or modify it
6    * under the terms of the GNU General Public License version 2 only, as
7    * published by the Free Software Foundation.  Oracle designates this
8    * particular file as subject to the "Classpath" exception as provided
9    * by Oracle in the LICENSE file that accompanied this code.
10   *
11   * This code is distributed in the hope that it will be useful, but WITHOUT
12   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14   * version 2 for more details (a copy is included in the LICENSE file that
15   * accompanied this code).
16   *
17   * You should have received a copy of the GNU General Public License version
18   * 2 along with this work; if not, write to the Free Software Foundation,
19   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20   *
21   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22   * or visit www.oracle.com if you need additional information or have any
23   * questions.
24   */
25  
26  package sun.net.www.http;
27  import java.io.*;
28  
29  /**
30   * A Simple FilterInputStream subclass to capture HTTP traffic.
31   * Every byte read is also passed to the HttpCapture class.
32   *
33   * @author jccollet
34   */
35  public class HttpCaptureInputStream extends FilterInputStream {
36      private HttpCapture capture = null;
37  
38      public HttpCaptureInputStream(InputStream in, HttpCapture cap) {
39          super(in);
40          capture = cap;
41      }
42  
43      @Override
44      public int read() throws IOException {
45          int i = super.read();
46          capture.received(i);
47          return i;
48      }
49  
50      @Override
51      public void close() throws IOException {
52          try {
53              capture.flush();
54          } catch (IOException iOException) {
55          }
56          super.close();
57      }
58  
59      @Override
60      public int read(byte[] b) throws IOException {
61          int ret = super.read(b);
62          for (int i = 0; i < ret; i++) {
63              capture.received(b[i]);
64          }
65          return ret;
66      }
67  
68      @Override
69      public int read(byte[] b, int off, int len) throws IOException {
70          int ret = super.read(b, off, len);
71          for (int i = 0; i < ret; i++) {
72              capture.received(b[off+i]);
73          }
74          return ret;
75      }
76  }