1 /* ProtocolVersion.java -- An SSL version number.
2 Copyright (C) 2006 Free Software Foundation, Inc.
4 This file is a part of GNU Classpath.
6 GNU Classpath is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or (at
9 your option) any later version.
11 GNU Classpath is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Classpath; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
21 Linking this library statically or dynamically with other modules is
22 making a combined work based on this library. Thus, the terms and
23 conditions of the GNU General Public License cover the whole
26 As a special exception, the copyright holders of this library give you
27 permission to link this library with independent modules to produce an
28 executable, regardless of the license terms of these independent
29 modules, and to copy and distribute the resulting executable under
30 terms of your choice, provided that you also meet, for each linked
31 independent module, the terms and conditions of the license of that
32 module. An independent module is a module which is not derived from
33 or based on this library. If you modify this library, you may extend
34 this exception to your version of the library, but you are not
35 obligated to do so. If you do not wish to do so, delete this
36 exception statement from your version. */
39 package gnu.javax.net.ssl.provider;
41 import java.io.InputStream;
42 import java.io.IOException;
43 import java.io.OutputStream;
45 public final class ProtocolVersion
46 implements Comparable<ProtocolVersion>, Constructed
49 // Constants and fields.
50 // -------------------------------------------------------------------------
52 public static final ProtocolVersion SSL_3 = new ProtocolVersion(3, 0);
53 public static final ProtocolVersion TLS_1 = new ProtocolVersion(3, 1);
54 public static final ProtocolVersion TLS_1_1 = new ProtocolVersion(3, 2);
56 private final int major;
57 private final int minor;
60 // -------------------------------------------------------------------------
62 private ProtocolVersion(int major, int minor)
69 // -------------------------------------------------------------------------
71 public static ProtocolVersion read(InputStream in) throws IOException
73 int major = in.read() & 0xFF;
74 int minor = in.read() & 0xFF;
75 return getInstance(major, minor);
78 public static ProtocolVersion forName (final String name)
80 if (name.equalsIgnoreCase ("SSLv3"))
82 if (name.equalsIgnoreCase ("TLSv1"))
84 if (name.equalsIgnoreCase("TLSv1.1"))
86 throw new IllegalArgumentException ("unknown protocol name: " + name);
89 public static ProtocolVersion getInstance(final int major, final int minor)
97 case 2: return TLS_1_1;
100 return new ProtocolVersion(major, minor);
103 public static ProtocolVersion getInstance (final short raw_value)
105 int major = raw_value >>> 8 & 0xFF;
106 int minor = raw_value & 0xFF;
107 return getInstance (major, minor);
111 // -------------------------------------------------------------------------
118 public byte[] getEncoded()
121 (byte) major, (byte) minor
135 public int rawValue ()
137 return (major << 8) | minor;
140 public boolean equals(Object o)
142 if (!(o instanceof ProtocolVersion))
146 return ((ProtocolVersion) o).major == this.major
147 && ((ProtocolVersion) o).minor == this.minor;
150 public int hashCode()
152 return major << 8 | minor;
155 public int compareTo(ProtocolVersion that)
157 if (major > that.major)
161 else if (major < that.major)
166 if (minor > that.minor)
170 else if (minor < that.minor)
177 public String toString (String prefix)
182 public String toString()
188 else if (this == TLS_1)
192 else if (this == TLS_1_1)
198 return "Unsupported; major=" + major + " minor=" + minor;