| /* 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<1..2^16-1>; |
| } CertificateURL; |
| |
| struct { |
| opaque url<1..2^16-1>; |
| 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(); |
| } |
| } |
| } |