1 files changed, 163 insertions, 0 deletions
diff --git a/gnu/javax/net/ssl/provider/ServerRSAParams.java b/gnu/javax/net/ssl/provider/ServerRSAParams.java
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+++ b/gnu/javax/net/ssl/provider/ServerRSAParams.java
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+/* ServerRSAParams.java -- The server's RSA parameters.
+   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.io.PrintWriter;
+import java.io.StringWriter;
+import java.math.BigInteger;
+import java.nio.ByteBuffer;
+
+/**
+ * The ServerRSAParams structure.
+ *
+ * <pre>
+struct
+{
+  opaque rsa_modulus&lt;1..2^16-1&gt;;
+  opaque rsa_exponent&lt;1..2^16-1&gt;;
+} ServerRSAParams;
+</pre>
+ */
+public class ServerRSAParams implements ServerKeyExchangeParams
+{
+
+  private final ByteBuffer buffer;
+
+  public ServerRSAParams (final ByteBuffer buffer)
+  {
+    this.buffer = buffer;
+  }
+
+  public KeyExchangeAlgorithm algorithm ()
+  {
+    return KeyExchangeAlgorithm.RSA;
+  }
+
+  public int length ()
+  {
+    int offset = buffer.getShort (0) & 0xFFFF;
+    return (buffer.getShort (offset + 2) & 0xFFFF) + offset + 4;
+  }
+
+  /**
+   * Gets the modulus field.
+   *
+   * @return The modulus.
+   */
+  public BigInteger modulus ()
+  {
+    int len = buffer.getShort (0) & 0xFFFF;
+    byte[] buf = new byte[len];
+    buffer.position (2);
+    buffer.get (buf);
+    return new BigInteger (1, buf);
+  }
+
+  /**
+   * Returns the exponent field.
+   *
+   * @return The exponent.
+   */
+  public BigInteger exponent ()
+  {
+    int off = (buffer.getShort (0) & 0xFFFF) + 2;
+    int len = buffer.getShort (off) & 0xFFFF;
+    byte[] buf = new byte[len];
+    buffer.position (off + 2);
+    buffer.get (buf);
+    return new BigInteger (1, buf);
+  }
+
+  /**
+   * Sets the modulus.
+   *
+   * @param modulus The modulus.
+   * @throws java.nio.ReadOnlyBufferException If the underlying buffer
+   * is not writable.
+   */
+  public void setModulus (final BigInteger modulus)
+  {
+    byte[] buf = modulus.toByteArray ();
+    int length = (buf[0] == 0x00 ? buf.length - 1 : buf.length);
+    int offset = (buf[0] == 0x00 ? 1 : 0);
+    buffer.putShort (0, (short) length);
+    buffer.position (2);
+    buffer.put (buf, offset, length);
+  }
+
+  /**
+   * Sets the exponent.
+   *
+   * @param exponent The exponent.
+   * @throws java.nio.ReadOnlyBufferException If the underlying buffer
+   * is not writeable.
+   */
+  public void setExponent (final BigInteger exponent)
+  {
+    byte[] buf = exponent.toByteArray ();
+    int length = (buf[0] == 0x00 ? buf.length -1 : buf.length);
+    int offset = (buf[0] == 0x00 ? 1 : 0);
+    int where = (buffer.getShort (0) & 0xFFFF) + 2;
+    buffer.putShort (where, (short) length);
+    buffer.position (where + 2);
+    buffer.put (buf, offset, length);
+  }
+
+  public String toString ()
+  {
+    return toString (null);
+  }
+
+  public String toString (final String prefix)
+  {
+    StringWriter str = new StringWriter ();
+    PrintWriter out = new PrintWriter (str);
+    if (prefix != null) out.print (prefix);
+    out.println ("struct {");
+    if (prefix != null) out.print (prefix);
+    out.print ("  rsa_modulus:  ");
+    out.println (modulus ().toString (16));
+    if (prefix != null) out.print (prefix);
+    out.print ("  rsa_exponent: ");
+    out.println (exponent ());
+    if (prefix != null) out.print (prefix);
+    out.print ("} ServerRSAParams;");
+    return str.toString ();
+  }
+}