mirror of
https://github.com/openjdk/jdk.git
synced 2026-01-31 13:38:47 +00:00
104 lines
3.4 KiB
Java
104 lines
3.4 KiB
Java
/*
|
|
* Copyright (c) 2006, 2016, 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. Oracle designates this
|
|
* particular file as subject to the "Classpath" exception as provided
|
|
* by Oracle in the LICENSE file that accompanied this code.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
package sun.security.ssl;
|
|
|
|
import java.io.IOException;
|
|
import java.util.ArrayList;
|
|
import java.util.List;
|
|
|
|
import javax.net.ssl.SSLProtocolException;
|
|
|
|
final class EllipticPointFormatsExtension extends HelloExtension {
|
|
|
|
static final int FMT_UNCOMPRESSED = 0;
|
|
static final int FMT_ANSIX962_COMPRESSED_PRIME = 1;
|
|
static final int FMT_ANSIX962_COMPRESSED_CHAR2 = 2;
|
|
|
|
static final HelloExtension DEFAULT =
|
|
new EllipticPointFormatsExtension(new byte[] {FMT_UNCOMPRESSED});
|
|
|
|
private final byte[] formats;
|
|
|
|
private EllipticPointFormatsExtension(byte[] formats) {
|
|
super(ExtensionType.EXT_EC_POINT_FORMATS);
|
|
this.formats = formats;
|
|
}
|
|
|
|
EllipticPointFormatsExtension(HandshakeInStream s, int len)
|
|
throws IOException {
|
|
super(ExtensionType.EXT_EC_POINT_FORMATS);
|
|
formats = s.getBytes8();
|
|
// RFC 4492 says uncompressed points must always be supported.
|
|
// Check just to make sure.
|
|
boolean uncompressed = false;
|
|
for (int format : formats) {
|
|
if (format == FMT_UNCOMPRESSED) {
|
|
uncompressed = true;
|
|
break;
|
|
}
|
|
}
|
|
if (uncompressed == false) {
|
|
throw new SSLProtocolException
|
|
("Peer does not support uncompressed points");
|
|
}
|
|
}
|
|
|
|
@Override
|
|
int length() {
|
|
return 5 + formats.length;
|
|
}
|
|
|
|
@Override
|
|
void send(HandshakeOutStream s) throws IOException {
|
|
s.putInt16(type.id);
|
|
s.putInt16(formats.length + 1);
|
|
s.putBytes8(formats);
|
|
}
|
|
|
|
private static String toString(byte format) {
|
|
int f = format & 0xff;
|
|
switch (f) {
|
|
case FMT_UNCOMPRESSED:
|
|
return "uncompressed";
|
|
case FMT_ANSIX962_COMPRESSED_PRIME:
|
|
return "ansiX962_compressed_prime";
|
|
case FMT_ANSIX962_COMPRESSED_CHAR2:
|
|
return "ansiX962_compressed_char2";
|
|
default:
|
|
return "unknown-" + f;
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public String toString() {
|
|
List<String> list = new ArrayList<String>();
|
|
for (byte format : formats) {
|
|
list.add(toString(format));
|
|
}
|
|
return "Extension " + type + ", formats: " + list;
|
|
}
|
|
}
|