1 files changed, 388 insertions, 0 deletions
diff --git a/gnu/javax/net/ssl/provider/CertificateURL.java b/gnu/javax/net/ssl/provider/CertificateURL.java
new file mode 100644
index 000000000..0bc1c428b
--- /dev/null
+++ b/gnu/javax/net/ssl/provider/CertificateURL.java
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+/* CertificateURL.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 gnu.javax.net.ssl.provider.Extension.Value;
+
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.nio.CharBuffer;
+import java.nio.charset.Charset;
+import java.nio.charset.CharsetEncoder;
+import java.util.List;
+import java.util.NoSuchElementException;
+
+/**
+ * The CertificateURL extension value.
+ * 
+ * <pre>
+enum {
+  individual_certs(0), pkipath(1), (255)
+} CertChainType;
+
+enum {
+  false(0), true(1)
+} Boolean;
+
+struct {
+  CertChainType type;
+  URLAndOptionalHash url_and_hash_list&lt;1..2^16-1&gt;;
+} CertificateURL;
+
+struct {
+  opaque url&lt;1..2^16-1&gt;;
+  Boolean hash_present;
+  select (hash_present) {
+    case false: struct {};
+    case true: SHA1Hash;
+  } hash;
+} URLAndOptionalHash;
+
+opaque SHA1Hash[20];</pre>
+ *
+ * @author csm
+ *
+ */
+public class CertificateURL extends Value implements Iterable<CertificateURL.URLAndOptionalHash>
+{
+  private ByteBuffer buffer;
+  
+  public CertificateURL(final ByteBuffer buffer)
+  {
+    this.buffer = buffer;
+  }
+  
+  public CertificateURL(CertChainType type, List<URLAndOptionalHash> urls)
+  {
+    int length = 3;
+    for (URLAndOptionalHash url : urls)
+      length += url.length();
+    buffer = ByteBuffer.allocate(length);
+    buffer.put((byte) type.getValue());
+    buffer.putShort((short) (length - 1));
+    for (URLAndOptionalHash url : urls)
+      buffer.put(url.buffer());
+    buffer.rewind();
+  }
+  
+  public int length()
+  {
+    return 3 + (buffer.getShort(1) & 0xFFFF);
+  }
+  
+  public ByteBuffer buffer()
+  {
+    return (ByteBuffer) buffer.duplicate().limit(length());
+  }
+
+  public CertChainType type()
+  {
+    switch (buffer.get(0))
+      {
+        case 0: return CertChainType.INDIVIDUAL_CERTS;
+        case 1: return CertChainType.PKIPATH;
+      }
+    throw new IllegalArgumentException("unknown certificate URL type");
+  }
+  
+  public int size()
+  {
+    int len = buffer.getShort(1) & 0xFFFF;
+    int n = 0;
+    for (int i = 3; i < len; )
+      {
+        URLAndOptionalHash u
+          = new URLAndOptionalHash((ByteBuffer) buffer.duplicate().position(i));
+        int l = u.length();
+        i += l;
+        n++;
+      }
+    return n;
+  }
+  
+  public URLAndOptionalHash get(int index)
+  {
+    int len = buffer.getShort(1) & 0xFFFF;
+    int n = 0;
+    int l = 0;
+    int i;
+    for (i = 3; i < len && n < index; )
+      {
+        URLAndOptionalHash u
+          = new URLAndOptionalHash((ByteBuffer) buffer.duplicate().position(i));
+        l = u.length();
+        i += l;
+        n++;
+      }
+    if (n < index)
+      throw new IndexOutOfBoundsException();
+    return new URLAndOptionalHash(((ByteBuffer) buffer.duplicate().position(i).limit(i+l)).slice());
+  }
+  
+  public void set(int index, URLAndOptionalHash url)
+  {
+    int len = buffer.getShort(1) & 0xFFFF;
+    int n = 0;
+    int i;
+    for (i = 3; i < len && n < index-1; )
+      {
+        URLAndOptionalHash u
+          = new URLAndOptionalHash((ByteBuffer) buffer.duplicate().position(i));
+        int l = u.length();
+        i += l;
+        n++;
+      }
+    if (n < index - 1)
+      throw new IndexOutOfBoundsException();
+    int l = url.urlLength();
+    buffer.putShort(i, (short) l);
+    ((ByteBuffer) buffer.duplicate().position(i+2)).put(url.urlBuffer());
+    buffer.put(i+l+2, (byte) (url.hashPresent() ? 1 : 0));
+    if (url.hashPresent())
+      ((ByteBuffer) buffer.duplicate().position(i+l+3)).put (url.sha1Hash());
+  }
+  
+  public void setLength(final int length)
+  {
+    if (length < 0 || length > 65535)
+      throw new IllegalArgumentException("length must be between 0 and 65535");
+    buffer.putShort(1, (short) length);
+  }
+  
+  public String toString()
+  {
+    return toString(null);
+  }
+  
+  public String toString(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("  type = ");
+    out.print(type());
+    out.println(";");
+    if (prefix != null) out.print(prefix);
+    out.println("  url_and_hash_list = {");
+    String subprefix = "  ";
+    if (prefix != null) subprefix = prefix + subprefix;
+    for (URLAndOptionalHash url : this)
+      {
+        out.println(url.toString(subprefix));
+      }
+    if (prefix != null) out.print(prefix);
+    out.println("  };");
+    if (prefix != null) out.print(prefix);
+    out.print("} CertificateURL;");
+    return str.toString();
+  }
+
+  public java.util.Iterator<URLAndOptionalHash> iterator()
+  {
+    return new Iterator();
+  }
+  
+  public class Iterator implements java.util.Iterator<URLAndOptionalHash>
+  {
+    private int index;
+    
+    public Iterator()
+    {
+      index = 0;
+    }
+    
+    public URLAndOptionalHash next() throws NoSuchElementException
+    {
+      try
+        {
+          return get(index++);
+        }
+      catch (IndexOutOfBoundsException ioobe)
+        {
+          throw new NoSuchElementException();
+        }
+    }
+    
+    public boolean hasNext()
+    {
+      return index < size();
+    }
+    
+    public void remove()
+    {
+      throw new UnsupportedOperationException();
+    }
+  }
+  
+  public static enum CertChainType
+  {
+    INDIVIDUAL_CERTS (0), PKIPATH (1);
+    
+    private final int value;
+    
+    private CertChainType (final int value)
+    {
+      this.value = value;
+    }
+    
+    public int getValue()
+    {
+      return value;
+    }
+  }
+  
+  public static class URLAndOptionalHash implements Builder, Constructed
+  {
+    private ByteBuffer buffer;
+    
+    public URLAndOptionalHash (final ByteBuffer buffer)
+    {
+      this.buffer = buffer.duplicate().order(ByteOrder.BIG_ENDIAN);
+    }
+    
+    public URLAndOptionalHash(String url)
+    {
+      this(url, null);
+    }
+    
+    public URLAndOptionalHash(String url, byte[] hash)
+    {
+      if (hash != null && hash.length < 20)
+        throw new IllegalArgumentException();
+      int length = 3 + url.length();
+      if (hash != null)
+        length += 20;
+      buffer = ByteBuffer.allocate(length);
+      buffer.putShort((short) url.length());
+      Charset cs = Charset.forName("US-ASCII");
+      CharsetEncoder ascii = cs.newEncoder();
+      ascii.encode(CharBuffer.wrap(url), buffer, true);
+      buffer.put((byte) (hash != null ? 1 : 0));
+      if (hash != null)
+        buffer.put(hash, 0, 20);
+      buffer.rewind();
+    }
+    
+    public int length()
+    {
+      return ((buffer.getShort(0) & 0xFFFF)
+              + (hashPresent() ? 23 : 3));
+    }
+    
+    public ByteBuffer buffer()
+    {
+      return (ByteBuffer) buffer.duplicate().limit(length());
+    }
+    
+    public String url()
+    {
+      Charset cs = Charset.forName("ASCII");
+      return cs.decode(urlBuffer()).toString();
+    }
+    
+    public int urlLength()
+    {
+      return buffer.getShort(0) & 0xFFFF;
+    }
+    
+    public ByteBuffer urlBuffer()
+    {
+      int len = urlLength();
+      return ((ByteBuffer) buffer.duplicate().position(2).limit(2+len)).slice();
+    }
+    
+    public boolean hashPresent()
+    {
+      int i = (buffer.getShort(0) & 0xFFFF) + 2;
+      byte b = buffer.get(i);
+      if (b == 0)
+        return false;
+      if (b == 1)
+        return true;
+      throw new IllegalArgumentException("expecting 0 or 1: " + (b & 0xFF));
+    }
+    
+    public byte[] sha1Hash()
+    {
+      int i = (buffer.getShort(0) & 0xFFFF) + 2;
+      byte b = buffer.get(i);
+      if (b == 0)
+        return null;
+      byte[] buf = new byte[20];
+      ((ByteBuffer) buffer.duplicate().position(i+1)).get(buf);
+      return buf;
+    }
+    
+    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("  url = ");
+      out.print(url());
+      out.println(";");
+      boolean has_hash = hashPresent();
+      if (prefix != null) out.print(prefix);
+      out.print("  hash_present = ");
+      out.print(has_hash);
+      out.println(";");
+      if (has_hash)
+        {
+          if (prefix != null) out.print(prefix);
+          out.print("  sha1Hash = ");
+          out.print(Util.toHexString(sha1Hash(), ':'));
+          out.println(";");
+        }
+      if (prefix != null) out.print(prefix);
+      out.print("} URLAndOptionalHash;");
+      return str.toString();
+    }
+  }
+}