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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/gnu/javax/net/ssl/provider/ClientHelloBuilder.java
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+/* ClientHelloBuilder.java --
+ Copyright (C) 2006 Free Software Foundation, Inc.
+
+This file is a part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or (at
+your option) any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
+USA
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package gnu.javax.net.ssl.provider;
+
+import java.nio.ByteBuffer;
+import java.util.List;
+
+/**
+ * Builder for {@link ClientHello} objects.
+ *
+ * @author Casey Marshall (csm@gnu.org)
+ */
+public class ClientHelloBuilder extends ClientHello implements Builder
+{
+ public ClientHelloBuilder()
+ {
+ super(ByteBuffer.allocate(256));
+ }
+
+ /* (non-Javadoc)
+ * @see gnu.javax.net.ssl.provider.Builder#buffer()
+ */
+ public ByteBuffer buffer()
+ {
+ return (ByteBuffer) buffer.duplicate().position(0).limit(length());
+ }
+
+ public void setVersion(final ProtocolVersion version)
+ {
+ ensureCapacity(2);
+ buffer.putShort(0, (short) version.rawValue ());
+ }
+
+ public void setSessionId (final byte[] buffer)
+ {
+ setSessionId(buffer, 0, buffer.length);
+ }
+
+ public void setSessionId (final byte[] buffer, final int offset, final int length)
+ {
+ ensureCapacity(SESSID_OFFSET2 + length);
+ int len = Math.min (32, length);
+ this.buffer.put (SESSID_OFFSET, (byte) len);
+ this.buffer.position (SESSID_OFFSET2);
+ this.buffer.put (buffer, offset, len);
+ }
+
+ public void setCipherSuites(List<CipherSuite> suites)
+ {
+ int off = getCipherSuitesOffset();
+ ensureCapacity(off + (2 * suites.size()) + 2);
+ buffer.putShort(off, (short) (suites.size() * 2));
+ int i = 2;
+ for (CipherSuite suite : suites)
+ {
+ ((ByteBuffer) buffer.duplicate().position(off+i)).put(suite.id());
+ i += 2;
+ }
+ }
+
+ public void setCompressionMethods(List<CompressionMethod> methods)
+ {
+ int off = getCompressionMethodsOffset();
+ ensureCapacity(off + methods.size() + 1);
+ buffer.put(off, (byte) methods.size());
+ for (CompressionMethod method : methods)
+ buffer.put(++off, (byte) method.getValue());
+ }
+
+ public void setExtensionsLength (final int length)
+ {
+ if (length < 0 || length > 16384)
+ throw new IllegalArgumentException("length must be nonnegative and not exceed 16384");
+ int needed = getExtensionsOffset() + 2 + length;
+ if (buffer.capacity() < needed)
+ ensureCapacity(needed);
+ buffer.putShort(getExtensionsOffset(), (short) length);
+ }
+
+ public void setExtensions(ByteBuffer extensions)
+ {
+ int elen = extensions.getShort(0) & 0xFFFF;
+ setExtensionsLength(elen);
+ ((ByteBuffer) buffer.duplicate().position(getExtensionsOffset())).put(extensions);
+ }
+
+ public void setDisableExtensions(boolean disableExtensions)
+ {
+ this.disableExtensions = disableExtensions;
+ }
+
+ public void ensureCapacity(final int length)
+ {
+ if (buffer.capacity() >= length)
+ return;
+ ByteBuffer newBuf = ByteBuffer.allocate(length);
+ newBuf.put((ByteBuffer) buffer.position(0));
+ newBuf.position(0);
+ this.buffer = newBuf;
+ }
+}