1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.coyote.http11.filters;
19
20 import java.io.IOException;
21
22 import org.apache.coyote.InputBuffer;
23 import org.apache.coyote.http11.InputFilter;
24 import org.apache.tomcat.util.buf.ByteChunk;
25
26 /**
27 * Input filter responsible for replaying the request body when restoring the
28 * saved request after FORM authentication.
29 */
30 public class SavedRequestInputFilter implements InputFilter {
31
32 /**
33 * The original request body.
34 */
35 protected ByteChunk input = null;
36
37 /**
38 * Create a new SavedRequestInputFilter.
39 *
40 * @param input The saved request body to be replayed.
41 */
42 public SavedRequestInputFilter(ByteChunk input) {
43 this.input = input;
44 }
45
46 /**
47 * Read bytes.
48 */
49 public int doRead(ByteChunk chunk, org.apache.coyote.Request request)
50 throws IOException {
51 int writeLength = 0;
52
53 if (chunk.getLimit() > 0 && chunk.getLimit() < input.getLength()) {
54 writeLength = chunk.getLimit();
55 } else {
56 writeLength = input.getLength();
57 }
58
59 if(input.getOffset()>= input.getEnd())
60 return -1;
61
62 input.substract(chunk.getBuffer(), 0, writeLength);
63 chunk.setOffset(0);
64 chunk.setEnd(writeLength);
65
66 return writeLength;
67 }
68
69 /**
70 * Set the content length on the request.
71 */
72 public void setRequest(org.apache.coyote.Request request) {
73 request.setContentLength(input.getLength());
74 }
75
76 /**
77 * Make the filter ready to process the next request.
78 */
79 public void recycle() {
80 input = null;
81 }
82
83 /**
84 * Return the name of the associated encoding; here, the value is null.
85 */
86 public ByteChunk getEncodingName() {
87 return null;
88 }
89
90 /**
91 * Set the next buffer in the filter pipeline (has no effect).
92 */
93 public void setBuffer(InputBuffer buffer) {
94 }
95
96 /**
97 * Amount of bytes still available in a buffer.
98 */
99 public int available() {
100 return input.getLength();
101 }
102
103 /**
104 * End the current request (has no effect).
105 */
106 public long end() throws IOException {
107 return 0;
108 }
109
110 }
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