1 files changed, 93 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/javax/crypto/keyring/CompressedEntry.java b/libjava/classpath/gnu/javax/crypto/keyring/CompressedEntry.java
new file mode 100644
index 000000000..8949a41e9
--- /dev/null
+++ b/libjava/classpath/gnu/javax/crypto/keyring/CompressedEntry.java
@@ -0,0 +1,93 @@
+/* CompressedEntry.java --
+   Copyright (C) 2003, 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.crypto.keyring;
+
+import java.io.ByteArrayOutputStream;
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.util.Iterator;
+import java.util.zip.DeflaterOutputStream;
+import java.util.zip.InflaterInputStream;
+
+public class CompressedEntry
+    extends EnvelopeEntry
+{
+  public static final int TYPE = 4;
+
+  public CompressedEntry(Properties properties)
+  {
+    super(TYPE, properties);
+    this.properties.put("algorithm", "DEFLATE");
+  }
+
+  private CompressedEntry()
+  {
+    this(new Properties());
+  }
+
+  public static CompressedEntry decode(DataInputStream in) throws IOException
+  {
+    CompressedEntry entry = new CompressedEntry();
+    entry.properties.decode(in);
+    String alg = entry.properties.get("algorithm");
+    if (alg == null)
+      throw new MalformedKeyringException("no compression algorithm");
+    if (! alg.equalsIgnoreCase("DEFLATE"))
+      throw new MalformedKeyringException("unsupported compression algorithm: "
+                                          + alg);
+    int len = in.readInt();
+    MeteredInputStream min = new MeteredInputStream(in, len);
+    InflaterInputStream infin = new InflaterInputStream(min);
+    DataInputStream in2 = new DataInputStream(infin);
+    entry.decodeEnvelope(in2);
+    return entry;
+  }
+
+  protected void encodePayload() throws IOException
+  {
+    ByteArrayOutputStream buf = new ByteArrayOutputStream(1024);
+    DeflaterOutputStream dout = new DeflaterOutputStream(buf);
+    DataOutputStream out2 = new DataOutputStream(dout);
+    for (Iterator it = entries.iterator(); it.hasNext();)
+      ((Entry) it.next()).encode(out2);
+    dout.finish();
+    payload = buf.toByteArray();
+  }
+}