| /* Extensions.java -- various static extension utilities. |
| 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.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.io.UnsupportedEncodingException; |
| import java.util.Collections; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| import javax.security.auth.x500.X500Principal; |
| |
| import gnu.java.security.x509.X500DistinguishedName; |
| |
| final class Extensions |
| { |
| |
| // Constants. |
| // ------------------------------------------------------------------------- |
| |
| private static final Integer _512 = new Integer(512), |
| _1024 = new Integer(1024), _2048 = new Integer(2048), |
| _4096 = new Integer(4096); |
| |
| // Class methods only. |
| private Extensions() { } |
| |
| // Class methods. |
| // ------------------------------------------------------------------------- |
| |
| static List getServerName(Extension ex) |
| { |
| LinkedList l = new LinkedList(); |
| byte[] buf = ex.getValue(); |
| int pos = 0; |
| try |
| { |
| while (pos < buf.length) |
| { |
| if (buf[pos++] != 0) |
| break; |
| int len = (buf[pos++] & 0xFF) << 8; |
| len |= buf[pos++] & 0xFF; |
| l.add(new String(buf, pos, len, "UTF-8")); |
| pos += len; |
| } |
| } |
| catch (Exception x) |
| { |
| } |
| return Collections.unmodifiableList(l); |
| } |
| |
| static List getClientCertTypes(Extension ex) throws IOException |
| { |
| List l = new LinkedList(); |
| ByteArrayInputStream in = new ByteArrayInputStream(ex.getValue()); |
| final int len = in.read() & 0xFF; |
| for (int i = 0; i < len; i++) |
| { |
| l.add(CertificateType.read(in)); |
| } |
| return Collections.unmodifiableList(l); |
| } |
| |
| static CertificateType getServerCertType(Extension ex) throws IOException |
| { |
| return CertificateType.read(new ByteArrayInputStream(ex.getValue())); |
| } |
| |
| static Integer getMaxFragmentLength(Extension ex) |
| { |
| switch (ex.getValue()[0] & 0xFF) |
| { |
| case 1: return _512; |
| case 2: return _1024; |
| case 3: return _2048; |
| case 4: return _4096; |
| } |
| throw new IllegalArgumentException(); |
| } |
| |
| static Object[] getTrustedCA(Extension ex) |
| { |
| byte[] buf = ex.getValue(); |
| int type = buf[0] & 0xFF; |
| try |
| { |
| switch (type) |
| { |
| case 0: |
| return new Object[] { new Integer(type), null }; |
| case 1: |
| case 3: |
| return new Object[] { new Integer(type), |
| Util.trim(buf, 1, 20) }; |
| case 2: |
| return new Object[] { new Integer(type), |
| new X500Principal(Util.trim(buf, 1, 20)) }; |
| } |
| } |
| catch (Exception x) |
| { |
| } |
| throw new IllegalArgumentException(); |
| } |
| |
| static String getSRPUsername(Extension ex) |
| { |
| int len = ex.getValue()[0] & 0xFF; |
| if (len > ex.getValue().length - 1) |
| throw new IllegalArgumentException(); |
| try |
| { |
| return new String(ex.getValue(), 1, len, "UTF-8"); |
| } |
| catch (UnsupportedEncodingException uee) |
| { |
| throw new Error(uee.toString()); |
| } |
| } |
| } |