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/*
* Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* @test
* @bug 8164704
* @modules java.net.http
* jdk.httpserver
* java.base/sun.net.www
* @run main MessageHeadersTest
* @summary Tests expected behavior of MessageHeader. This test
* cannot be used to verify 8164704 - it simply verifies
* the assumptions on which the fix is based.
*/
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.nio.ByteBuffer;
public class MessageHeadersTest {
static final String BODY =
"This is the body dude,\r\n"
+ "not a header!\r\n";
static final String MESSAGE_OK =
"HTTP/1.1 200 OK\r\n"
+ "Content-Length: " + BODY.length() + "\r\n"
+ "MY-Folding-Header: YES\r\n"
+ " OR\r\n"
+ " NO\r\n"
+ "\r\n"
+ BODY;
static final String MESSAGE_NOK =
"HTTP/1.1 101 Switching Protocols\r\n"
+ "\r\n";
static final class ByteBufferInputStream extends InputStream {
final ByteBuffer buffer;
int lastRead = -1;
ByteBufferInputStream(ByteBuffer buffer) {
this.buffer = buffer;
}
@Override
public int read() throws IOException {
if (buffer.hasRemaining()) {
return lastRead = buffer.get();
}
return -1;
}
}
public static void main(String[] args) throws IOException {
testMessageHeaders(MESSAGE_OK);
testMessageHeaders(MESSAGE_NOK);
}
/**
* Verifies that MessageHeader behave as we expect.
* @param msg The response string.
* @throws IOException should not happen.
*/
static void testMessageHeaders(String msg) throws IOException {
byte[] bytes = msg.getBytes("US-ASCII");
ByteBuffer buffer = ByteBuffer.wrap(bytes);
// Read status line
String statusLine = readStatusLine(buffer);
System.out.println("StatusLine: " + statusLine);
if (!statusLine.startsWith("HTTP/1.1")) {
throw new AssertionError("bad status line: " + statusLine);
}
// Wrap the buffer into an input stream and pass
// that to MessageHeader to read the header.
// We have two cases:
// - MESSAGE_OK: there will be some headers to read,
// - MESSAGE_NOK: there will be no headers to read.
ByteBufferInputStream bbis = new ByteBufferInputStream(buffer);
sun.net.www.MessageHeader mh = new sun.net.www.MessageHeader(bbis);
// Now get the expected length of the body
String contentLengthValue = mh.findValue("Content-length");
int contentLength = contentLengthValue == null ? 0
: Integer.parseInt(contentLengthValue);
// We again have two cases:
// - MESSAGE_OK: there should be a Content-length: header
// - MESSAGE_NOK: there should be no Content-length: header
if (contentLengthValue == null) {
// MESSAGE_NOK has no headers and no body and therefore
// no Content-length: header.
if (!MESSAGE_NOK.equals(msg)) {
throw new AssertionError("Content-length: header not found");
}
// In that case we expect MessageHeader to read the CR but
// leave the LF in the buffer. We therefore need to consume
// the the LF in order to get an empty (all consumed) buffer.
// This is what ResponseHeaders does.
byte c = buffer.get();
if (c != '\n' || bbis.lastRead != '\r') {
throw new AssertionError("Unexpected byte sequence for empty body"
+ ": " + bbis.lastRead + " " + c + " expected "
+ (byte)'\r' + " " + (byte)'\n');
}
} else {
if (MESSAGE_NOK.equals(msg)) {
throw new AssertionError("Content-length: header found in"
+ " error 101 message");
}
}
// Now read the remaining bytes. It should either be
// the empty string (MESSAGE_NOK) or BODY (MESSAGE_OK),
// and it should not contains any leading CR or LF"
String remaining = readRemainingBytes(buffer);
System.out.println("Body: <<<" + remaining + ">>>");
if (remaining.length() != contentLength) {
throw new AssertionError("Unexpected body length: " + remaining.length()
+ " expected " + contentLengthValue);
}
if (contentLengthValue != null) {
if (!BODY.equals(remaining)) {
throw new AssertionError("Body does not match!");
}
}
}
static String readRemainingBytes(ByteBuffer buffer) throws UnsupportedEncodingException {
byte[] res = new byte[buffer.limit() - buffer.position()];
System.arraycopy(buffer.array(), buffer.position(), res, 0, res.length);
buffer.position(buffer.limit());
return new String(res, "US-ASCII");
}
static String readStatusLine(ByteBuffer buffer) throws IOException {
buffer.mark();
int p = buffer.position();
while(buffer.hasRemaining()) {
char c = (char)buffer.get();
if (c == '\r') {
c = (char)buffer.get();
if (c == '\n') {
byte[] res = new byte[buffer.position() - p -2];
System.arraycopy(buffer.array(), p, res, 0, res.length);
return new String(res, "US-ASCII");
}
}
}
throw new IOException("Status line not found");
}
}
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