| /* ProtocolVersion.java -- An SSL version number. |
| 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.InputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| |
| final class ProtocolVersion implements Comparable, Constructed |
| { |
| |
| // Constants and fields. |
| // ------------------------------------------------------------------------- |
| |
| static final ProtocolVersion SSL_3 = new ProtocolVersion(3, 0); |
| static final ProtocolVersion TLS_1 = new ProtocolVersion(3, 1); |
| static final ProtocolVersion TLS_1_1 = new ProtocolVersion(3, 2); |
| |
| private final int major; |
| private final int minor; |
| |
| // Constructor. |
| // ------------------------------------------------------------------------- |
| |
| private ProtocolVersion(int major, int minor) |
| { |
| this.major = major; |
| this.minor = minor; |
| } |
| |
| // Class methods. |
| // ------------------------------------------------------------------------- |
| |
| static ProtocolVersion read(InputStream in) throws IOException |
| { |
| int major = in.read() & 0xFF; |
| int minor = in.read() & 0xFF; |
| return getInstance(major, minor); |
| } |
| |
| static ProtocolVersion getInstance(int major, int minor) |
| { |
| if (major == 3) |
| { |
| switch (minor) |
| { |
| case 0: return SSL_3; |
| case 1: return TLS_1; |
| case 2: return TLS_1_1; |
| } |
| } |
| return new ProtocolVersion(major, minor); |
| } |
| |
| // Instance methods. |
| // ------------------------------------------------------------------------- |
| |
| public void write(OutputStream out) throws IOException |
| { |
| out.write(major); |
| out.write(minor); |
| } |
| |
| byte[] getEncoded() |
| { |
| return new byte[] { |
| (byte) major, (byte) minor |
| }; |
| } |
| |
| int getMajor() |
| { |
| return major; |
| } |
| |
| int getMinor() |
| { |
| return minor; |
| } |
| |
| public boolean equals(Object o) |
| { |
| if (o == null || !(o instanceof ProtocolVersion)) |
| { |
| return false; |
| } |
| return ((ProtocolVersion) o).major == this.major |
| && ((ProtocolVersion) o).minor == this.minor; |
| } |
| |
| public int hashCode() |
| { |
| return major << 8 | minor; |
| } |
| |
| public int compareTo(Object o) |
| { |
| if (o == null || !(o instanceof ProtocolVersion)) |
| { |
| return 1; |
| } |
| if (this.equals(o)) |
| { |
| return 0; |
| } |
| if (major > ((ProtocolVersion) o).major) |
| { |
| return 1; |
| } |
| else if (major < ((ProtocolVersion) o).major) |
| { |
| return -1; |
| } |
| if (minor > ((ProtocolVersion) o).minor) |
| { |
| return 1; |
| } |
| else if (minor < ((ProtocolVersion) o).minor) |
| { |
| return -1; |
| } |
| return 0; |
| } |
| |
| public String toString() |
| { |
| if (this == SSL_3) |
| { |
| return "SSLv3"; |
| } |
| else if (this == TLS_1) |
| { |
| return "TLSv1"; |
| } |
| else if (this == TLS_1_1) |
| { |
| return "TLSv1.1"; |
| } |
| else |
| { |
| return "Unsupported; major=" + major + " minor=" + minor; |
| } |
| } |
| } |