mirror of git://gcc.gnu.org/git/gcc.git
138 lines
4.4 KiB
Java
138 lines
4.4 KiB
Java
/* ClientHelloBuilder.java --
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Copyright (C) 2006 Free Software Foundation, Inc.
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This file is a part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at
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your option) any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
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USA
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.javax.net.ssl.provider;
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import java.nio.ByteBuffer;
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import java.util.List;
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/**
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* Builder for {@link ClientHello} objects.
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*
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* @author Casey Marshall (csm@gnu.org)
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*/
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public class ClientHelloBuilder extends ClientHello implements Builder
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{
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public ClientHelloBuilder()
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{
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super(ByteBuffer.allocate(256));
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}
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/* (non-Javadoc)
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* @see gnu.javax.net.ssl.provider.Builder#buffer()
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*/
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public ByteBuffer buffer()
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{
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return (ByteBuffer) buffer.duplicate().position(0).limit(length());
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}
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public void setVersion(final ProtocolVersion version)
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{
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ensureCapacity(2);
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buffer.putShort(0, (short) version.rawValue ());
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}
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public void setSessionId (final byte[] buffer)
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{
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setSessionId(buffer, 0, buffer.length);
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}
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public void setSessionId (final byte[] buffer, final int offset, final int length)
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{
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ensureCapacity(SESSID_OFFSET2 + length);
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int len = Math.min (32, length);
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this.buffer.put (SESSID_OFFSET, (byte) len);
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this.buffer.position (SESSID_OFFSET2);
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this.buffer.put (buffer, offset, len);
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}
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public void setCipherSuites(List<CipherSuite> suites)
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{
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int off = getCipherSuitesOffset();
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ensureCapacity(off + (2 * suites.size()) + 2);
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buffer.putShort(off, (short) (suites.size() * 2));
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int i = 2;
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for (CipherSuite suite : suites)
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{
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((ByteBuffer) buffer.duplicate().position(off+i)).put(suite.id());
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i += 2;
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}
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}
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public void setCompressionMethods(List<CompressionMethod> methods)
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{
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int off = getCompressionMethodsOffset();
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ensureCapacity(off + methods.size() + 1);
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buffer.put(off, (byte) methods.size());
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for (CompressionMethod method : methods)
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buffer.put(++off, (byte) method.getValue());
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}
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public void setExtensionsLength (final int length)
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{
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if (length < 0 || length > 16384)
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throw new IllegalArgumentException("length must be nonnegative and not exceed 16384");
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int needed = getExtensionsOffset() + 2 + length;
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if (buffer.capacity() < needed)
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ensureCapacity(needed);
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buffer.putShort(getExtensionsOffset(), (short) length);
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}
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public void setExtensions(ByteBuffer extensions)
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{
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int elen = extensions.getShort(0) & 0xFFFF;
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setExtensionsLength(elen);
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((ByteBuffer) buffer.duplicate().position(getExtensionsOffset())).put(extensions);
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}
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public void setDisableExtensions(boolean disableExtensions)
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{
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this.disableExtensions = disableExtensions;
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}
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public void ensureCapacity(final int length)
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{
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if (buffer.capacity() >= length)
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return;
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ByteBuffer newBuf = ByteBuffer.allocate(length);
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newBuf.put((ByteBuffer) buffer.position(0));
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newBuf.position(0);
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this.buffer = newBuf;
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}
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}
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