| /* X500PrincipalList.java -- A list of X.500 names. |
| 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.nio.ByteBuffer; |
| |
| import java.util.ConcurrentModificationException; |
| import java.util.ListIterator; |
| import java.util.NoSuchElementException; |
| |
| import javax.security.auth.x500.X500Principal; |
| |
| public final class X500PrincipalList implements Iterable<X500Principal> |
| { |
| private final ByteBuffer buffer; |
| private int modCount; |
| |
| public X500PrincipalList (final ByteBuffer buffer) |
| { |
| this.buffer = buffer; |
| modCount = 0; |
| } |
| |
| public int size () |
| { |
| return (buffer.getShort (0) & 0xFFFF); |
| } |
| |
| public int count () |
| { |
| int size = size (); |
| int i = 0; |
| for (int offset = 2; offset < size; i++) |
| { |
| int _size = (buffer.getShort (offset) & 0xFFFF); |
| // We don't want this going into an infinite loop if |
| // you mistakenly put a zero-length name. |
| if (_size == 0) |
| break; |
| offset += _size + 2; |
| } |
| return i; |
| } |
| |
| public X500Principal get (final int index) |
| { |
| if (index < 0) |
| throw new IndexOutOfBoundsException ("negative index"); |
| int size = size (); |
| int i = 0; |
| for (int offset = 2; offset < size; i++) |
| { |
| int _size = (buffer.getShort (offset) & 0xFFFF); |
| if (_size == 0) |
| throw new IndexOutOfBoundsException ("zero-length name encountered"); |
| if (i == index) |
| { |
| byte[] buf = new byte[_size]; |
| buffer.position (offset + 2); |
| buffer.get (buf); |
| return new X500Principal (buf); |
| } |
| offset += 2 + _size; |
| } |
| throw new IndexOutOfBoundsException ("limit: " + i + "; requested: " + index); |
| } |
| |
| public void put (final int index, final X500Principal principal) |
| { |
| put (index, principal.getEncoded ()); |
| } |
| |
| public void put (final int index, final byte[] encoded) |
| { |
| if (index < 0) |
| throw new IndexOutOfBoundsException ("negative index"); |
| int size = size (); |
| int i = 0; |
| for (int offset = 2; offset < size; i++) |
| { |
| int off = (buffer.getShort (offset) & 0xFFFF); |
| if (i == index) |
| { |
| buffer.putShort (offset, (short) encoded.length); |
| buffer.position (offset + 2); |
| buffer.put (encoded); |
| modCount++; |
| return; |
| } |
| offset += 2 + off; |
| } |
| throw new IndexOutOfBoundsException ("limit: " + (i-1) + "; requested: " + index); |
| } |
| |
| public void setSize (final int numNames, final int namesSize) |
| { |
| if (numNames < 1) |
| throw new IllegalArgumentException ("must have at least one name"); |
| int size = (numNames * 2) + namesSize; |
| if (size < 3 || size > buffer.capacity () || size > 0xFFFF) |
| throw new IllegalArgumentException ("size out of range; maximum: " |
| + Math.min (buffer.capacity (), 0xFFFF)); |
| buffer.putShort (0, (short) size); |
| } |
| |
| 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.print ("["); |
| out.print (count ()); |
| out.println ("] {"); |
| for (Iterator it = new Iterator (); it.hasNext (); ) |
| { |
| if (prefix != null) out.print (prefix); |
| out.print (" "); |
| out.println (it.next ()); |
| } |
| if (prefix != null) out.print (prefix); |
| out.print ("};"); |
| return str.toString (); |
| } |
| |
| public boolean equals (Object o) |
| { |
| if (!(o instanceof X500PrincipalList)) |
| return false; |
| X500PrincipalList that = (X500PrincipalList) o; |
| |
| if (size () != that.size ()) |
| return false; |
| |
| for (Iterator it1 = new Iterator (), it2 = that.new Iterator (); |
| it1.hasNext () && it2.hasNext (); ) |
| { |
| if (!it1.next ().equals (it2.next ())) |
| return false; |
| } |
| return true; |
| } |
| |
| public java.util.Iterator<X500Principal> iterator () |
| { |
| return new Iterator(); |
| } |
| |
| public class Iterator implements ListIterator<X500Principal> |
| { |
| private final int modCount; |
| private int index; |
| private final int count; |
| |
| public Iterator () |
| { |
| this.modCount = X500PrincipalList.this.modCount; |
| index = 0; |
| count = count (); |
| } |
| |
| public void add (X500Principal o) |
| { |
| throw new UnsupportedOperationException (); |
| } |
| |
| public boolean hasNext () |
| { |
| return (index < count); |
| } |
| |
| public boolean hasPrevious () |
| { |
| return (index > 0); |
| } |
| |
| public X500Principal next () throws NoSuchElementException |
| { |
| if (modCount != X500PrincipalList.this.modCount) |
| throw new ConcurrentModificationException (); |
| try |
| { |
| return get (index++); |
| } |
| catch (IndexOutOfBoundsException ioobe) |
| { |
| throw new NoSuchElementException (); |
| } |
| } |
| |
| public int nextIndex () |
| { |
| if (hasNext ()) |
| return (index + 1); |
| return -1; |
| } |
| |
| public X500Principal previous () throws NoSuchElementException |
| { |
| if (index == 0) |
| throw new NoSuchElementException (); |
| if (modCount != X500PrincipalList.this.modCount) |
| throw new ConcurrentModificationException (); |
| try |
| { |
| return get (--index); |
| } |
| catch (IndexOutOfBoundsException ioobe) |
| { |
| throw new NoSuchElementException (); |
| } |
| } |
| |
| public int previousIndex () |
| { |
| return (index - 1); |
| } |
| |
| public void remove () |
| { |
| throw new UnsupportedOperationException (); |
| } |
| |
| public void set (final X500Principal o) |
| { |
| throw new UnsupportedOperationException (); |
| } |
| } |
| } |