/*
* 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.coyote.http2;
import java.nio.ByteBuffer;
import org.junit.
Assert;
import org.junit.Test;
import org.apache.tomcat.util.http.MimeHeaders;
public class TestHpack {
@Test
public void testEncode()
throws Exception {
MimeHeaders headers =
new MimeHeaders();
headers.setValue(
"header1").setString(
"value1");
headers.setValue(
":status").setString(
"200");
headers.setValue(
"header2").setString(
"value2");
ByteBuffer output = ByteBuffer.allocate(512);
HpackEncoder encoder =
new HpackEncoder();
encoder.encode(headers, output);
output.flip();
// Size is supposed to be 33 without huffman, or 27 with it
// TODO: use the HpackHeaderFunction to enable huffman predictably
Assert.assertEquals(27, output.remaining());
output.clear();
encoder.encode(headers, output);
output.flip();
// Size is now 3 after using the table
Assert.assertEquals(3, output.remaining());
}
@Test
public void testDecode()
throws Exception {
MimeHeaders headers =
new MimeHeaders();
headers.setValue(
"header1").setString(
"value1");
headers.setValue(
":status").setString(
"200");
headers.setValue(
"header2").setString(
"value2");
ByteBuffer output = ByteBuffer.allocate(512);
HpackEncoder encoder =
new HpackEncoder();
encoder.encode(headers, output);
output.flip();
MimeHeaders headers2 =
new MimeHeaders();
HpackDecoder decoder =
new HpackDecoder();
decoder.setHeaderEmitter(
new HeadersListener(headers2));
decoder.decode(output);
// Redo (table is supposed to be updated)
output.clear();
encoder.encode(headers, output);
output.flip();
headers2.recycle();
Assert.assertEquals(3, output.remaining());
// Check that the decoder is using the table right
decoder.decode(output);
Assert.assertEquals(
"value2", headers2.getHeader(
"header2"));
}
private static class HeadersListener
implements HpackDecoder.HeaderEmitter {
private final MimeHeaders headers;
HeadersListener(MimeHeaders headers) {
this.headers = headers;
}
@Override
public void emitHeader(String name, String value) {
headers.setValue(name).setString(value);
}
@Override
public void setHeaderException(StreamException streamException) {
// NO-OP
}
@Override
public void validateHeaders()
throws StreamException {
// NO-OP
}
}
@Test
public void testHeaderValueBug60451()
throws HpackException {
doTestHeaderValueBug60451(
"fooébar");
}
@Test
public void testHeaderValueFullRange() {
for (
int i = 0; i < 256; i++) {
// Skip the control characters except VTAB
if (i == 9 || i > 31 && i < 127 || i > 127) {
try {
doTestHeaderValueBug60451(
"foo" + Character.toString((
char) i) +
"bar");
}
catch (Exception e) {
e.printStackTrace();
Assert.fail(e.getMessage() +
"[" + i +
"]");
}
}
}
}
@Test(expected = HpackException.
class)
public void testExcessiveStringLiteralPadding()
throws Exception {
MimeHeaders headers =
new MimeHeaders();
headers.setValue(
"X-test").setString(
"foobar");
ByteBuffer output = ByteBuffer.allocate(512);
HpackEncoder encoder =
new HpackEncoder();
encoder.encode(headers, output);
// Hack the output buffer to extend the EOS marker for the header value
// by another byte
output.array()[7] = (
byte) -122;
output.put((
byte) -1);
output.flip();
MimeHeaders headers2 =
new MimeHeaders();
HpackDecoder decoder =
new HpackDecoder();
decoder.setHeaderEmitter(
new HeadersListener(headers2));
decoder.decode(output);
}
private void doTestHeaderValueBug60451(String filename)
throws HpackException {
String headerName =
"Content-Disposition";
String headerValue =
"attachment;filename=\"" + filename + "\
"";
MimeHeaders headers =
new MimeHeaders();
headers.setValue(headerName).setString(headerValue);
ByteBuffer output = ByteBuffer.allocate(512);
HpackEncoder encoder =
new HpackEncoder();
encoder.encode(headers, output);
output.flip();
MimeHeaders headers2 =
new MimeHeaders();
HpackDecoder decoder =
new HpackDecoder();
decoder.setHeaderEmitter(
new HeadersListener(headers2));
decoder.decode(output);
Assert.assertEquals(headerValue, headers2.getHeader(headerName));
}
}