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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package libcore.tlswire.util;
import java.io.DataInput;
import java.io.IOException;
/**
* {@code ProtovolVersion} struct from TLS 1.2 RFC 5246.
*/
public class TlsProtocolVersion {
public static final TlsProtocolVersion SSLV3 = new TlsProtocolVersion(3, 0, "SSLv3");
public static final TlsProtocolVersion TLSv1_0 = new TlsProtocolVersion(3, 1, "TLSv1.0");
public static final TlsProtocolVersion TLSv1_1 = new TlsProtocolVersion(3, 2, "TLSv1.1");
public static final TlsProtocolVersion TLSv1_2 = new TlsProtocolVersion(3, 3, "TLSv1.2");
public final int major;
public final int minor;
public final String name;
private TlsProtocolVersion(int major, int minor, String name) {
this.major = major;
this.minor = minor;
this.name = name;
}
public static TlsProtocolVersion valueOf(int major, int minor) {
if (major == 3) {
switch (minor) {
case 0:
return SSLV3;
case 1:
return TLSv1_0;
case 2:
return TLSv1_1;
case 3:
return TLSv1_2;
}
}
return new TlsProtocolVersion(major, minor, major + "." + minor);
}
public static TlsProtocolVersion read(DataInput in) throws IOException {
int major = in.readUnsignedByte();
int minor = in.readUnsignedByte();
return TlsProtocolVersion.valueOf(major, minor);
}
@Override
public String toString() {
return name;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + major;
result = prime * result + minor;
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
TlsProtocolVersion other = (TlsProtocolVersion) obj;
if (major != other.major) {
return false;
}
if (minor != other.minor) {
return false;
}
return true;
}
}
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