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/*
* Copyright (c) 2002, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package org.openeuler.sun.security.ssl;
import java.security.CryptoPrimitive;
import java.util.ArrayList;
import java.util.Collections;
import java.util.EnumSet;
import java.util.List;
/**
* Enum for an SSL/TLS protocol version.
*
* @author Andreas Sterbenz
* @since 1.4.1
*/
public enum ProtocolVersion {
GMTLS (0x0101, "GMTLS"),
TLS13 (0x0304, "TLSv1.3"),
TLS12 (0x0303, "TLSv1.2"),
TLS11 (0x0302, "TLSv1.1"),
TLS10 (0x0301, "TLSv1"),
SSL30 (0x0300, "SSLv3"),
SSL20Hello (0x0002, "SSLv2Hello"),
// Dummy protocol version value for invalid SSLSession
NONE (-1, "NONE");
final int id;
final String name;
final byte major;
final byte minor;
final boolean isAvailable;
// The limit of maximum protocol version
static final int LIMIT_MAX_VALUE = 0xFFFF;
// The limit of minimum protocol version
static final int LIMIT_MIN_VALUE = 0x0000;
// TLS ProtocolVersion array for TLS 1.0 and previous versions.
static final ProtocolVersion[] PROTOCOLS_TO_10 = new ProtocolVersion[] {
TLS10, SSL30
};
// TLS ProtocolVersion array for TLS 1.1 and previous versions.
static final ProtocolVersion[] PROTOCOLS_TO_11 = new ProtocolVersion[] {
TLS11, TLS10, SSL30
};
// TLS ProtocolVersion array for TLS 1.2 and previous versions.
static final ProtocolVersion[] PROTOCOLS_TO_12 = new ProtocolVersion[] {
TLS12, TLS11, TLS10, SSL30
};
// TLS ProtocolVersion array for TLS 1.2 ,previous versions and GMTLS
static final ProtocolVersion[] PROTOCOLS_TO_12_AND_GMTLS = new ProtocolVersion[] {
TLS12, TLS11, TLS10, SSL30, GMTLS
};
// TLS ProtocolVersion array for TLS 1.3 and previous versions.
static final ProtocolVersion[] PROTOCOLS_TO_13 = new ProtocolVersion[] {
TLS13, TLS12, TLS11, TLS10, SSL30
};
// TLS ProtocolVersion array for TLS 1.3 and previous versions and GMTLS.
static final ProtocolVersion[] PROTOCOLS_TO_13_AND_GMTLS = new ProtocolVersion[] {
TLS13, TLS12, TLS11, TLS10, SSL30, GMTLS
};
// No protocol version specified.
static final ProtocolVersion[] PROTOCOLS_OF_NONE = new ProtocolVersion[] {
NONE
};
// TLS ProtocolVersion array for SSL 3.0.
static final ProtocolVersion[] PROTOCOLS_OF_30 = new ProtocolVersion[] {
SSL30
};
static final ProtocolVersion[] PROTOCOLS_OF_GMTLS = new ProtocolVersion[]{
GMTLS
};
static final ProtocolVersion[] PROTOCOLS_OF_GMTLS_AND_12 = new ProtocolVersion[]{
GMTLS, TLS12
};
// TLS ProtocolVersion array for TLS 1.1.
static final ProtocolVersion[] PROTOCOLS_OF_11 = new ProtocolVersion[] {
TLS11
};
// TLS ProtocolVersion array for TLS 1.2.
static final ProtocolVersion[] PROTOCOLS_OF_12 = new ProtocolVersion[] {
TLS12
};
// TLS ProtocolVersion array for TLS 1.3.
static final ProtocolVersion[] PROTOCOLS_OF_13 = new ProtocolVersion[] {
TLS13
};
// TLS ProtocolVersion array for TSL 1.0/1.1.
static final ProtocolVersion[] PROTOCOLS_10_11 = new ProtocolVersion[] {
TLS11, TLS10
};
// TLS ProtocolVersion array for TSL 1.1/1.2.
static final ProtocolVersion[] PROTOCOLS_11_12 = new ProtocolVersion[] {
TLS12, TLS11
};
// TLS ProtocolVersion array for TSL 1.2/1.3.
static final ProtocolVersion[] PROTOCOLS_12_13 = new ProtocolVersion[] {
TLS13, TLS12
};
// TLS ProtocolVersion array for TSL 1.0/1.1/1.2.
static final ProtocolVersion[] PROTOCOLS_10_12 = new ProtocolVersion[] {
TLS12, TLS11, TLS10
};
// TLS ProtocolVersion array for TLS 1.2 and previous versions.
static final ProtocolVersion[] PROTOCOLS_TO_TLS12 = new ProtocolVersion[] {
TLS12, TLS11, TLS10, SSL30
};
// TLS ProtocolVersion array for TLS 1.1 and previous versions.
static final ProtocolVersion[] PROTOCOLS_TO_TLS11 = new ProtocolVersion[] {
TLS11, TLS10, SSL30
};
// TLS ProtocolVersion array for TLS 1.0 and previous versions.
static final ProtocolVersion[] PROTOCOLS_TO_TLS10 = new ProtocolVersion[] {
TLS10, SSL30
};
// Empty ProtocolVersion array
static final ProtocolVersion[] PROTOCOLS_EMPTY = new ProtocolVersion[0];
static final ProtocolVersion[] PROTOCOLS_OF_RFC8998 = SSLConfiguration.enableRFC8998 ?
PROTOCOLS_OF_13 : PROTOCOLS_EMPTY;
private ProtocolVersion(int id, String name) {
this.id = id;
this.name = name;
this.major = (byte)((id >>> 8) & 0xFF);
this.minor = (byte)(id & 0xFF);
this.isAvailable = SSLAlgorithmConstraints.DEFAULT_SSL_ONLY.permits(
EnumSet.of(CryptoPrimitive.KEY_AGREEMENT),
name, null);
}
/**
* Return a ProtocolVersion with the specified major and minor
* version numbers.
*/
static ProtocolVersion valueOf(byte major, byte minor) {
for (ProtocolVersion pv : ProtocolVersion.values()) {
if ((pv.major == major) && (pv.minor == minor)) {
return pv;
}
}
return null;
}
/**
* Return a ProtocolVersion with the specified version number.
*/
static ProtocolVersion valueOf(int id) {
for (ProtocolVersion pv : ProtocolVersion.values()) {
if (pv.id == id) {
return pv;
}
}
return null;
}
/**
* Return name of a TLS protocol specified by major and
* minor version numbers.
*/
static String nameOf(byte major, byte minor) {
for (ProtocolVersion pv : ProtocolVersion.values()) {
if ((pv.major == major) && (pv.minor == minor)) {
return pv.name;
}
}
return "TLS-" + major + "." + minor;
}
/**
* Return name of a TLS protocol specified by a protocol number.
*/
static String nameOf(int id) {
return nameOf((byte)((id >>> 8) & 0xFF), (byte)(id & 0xFF));
}
/**
* Return a ProtocolVersion for the given TLS protocol name.
*/
static ProtocolVersion nameOf(String name) {
for (ProtocolVersion pv : ProtocolVersion.values()) {
if (pv.name.equals(name)) {
return pv;
}
}
return null;
}
/**
* Return true if the specific TLS protocol is negotiable.
*
* Used to filter out SSLv2Hello and protocol numbers less than the
* minimal supported protocol versions.
*/
static boolean isNegotiable(
byte major, byte minor, boolean allowSSL20Hello) {
int v = ((major & 0xFF) << 8) | (minor & 0xFF);
// GMTLS is negotiable
if (v == GMTLS.id) {
return true;
}
if (v < SSL30.id) {
if (!allowSSL20Hello || (v != SSL20Hello.id)) {
return false;
}
}
return true;
}
/**
* Get names of a list of ProtocolVersion objects.
*/
static String[] toStringArray(List protocolVersions) {
if ((protocolVersions != null) && !protocolVersions.isEmpty()) {
String[] protocolNames = new String[protocolVersions.size()];
int i = 0;
for (ProtocolVersion pv : protocolVersions) {
protocolNames[i++] = pv.name;
}
return protocolNames;
}
return new String[0];
}
/**
* Get names of a list of protocol version identifiers.
*/
static String[] toStringArray(int[] protocolVersions) {
if ((protocolVersions != null) && protocolVersions.length != 0) {
String[] protocolNames = new String[protocolVersions.length];
int i = 0;
for (int pv : protocolVersions) {
protocolNames[i++] = ProtocolVersion.nameOf(pv);
}
return protocolNames;
}
return new String[0];
}
/**
* Get a list of ProtocolVersion objects of an array protocol
* version names.
*/
static List namesOf(String[] protocolNames) {
if (protocolNames == null || protocolNames.length == 0) {
return Collections.emptyList();
}
List pvs = new ArrayList<>(protocolNames.length);
for (String pn : protocolNames) {
ProtocolVersion pv = ProtocolVersion.nameOf(pn);
if (pv == null) {
throw new IllegalArgumentException(
"Unsupported protocol" + pn);
}
pvs.add(pv);
}
return Collections.unmodifiableList(pvs);
}
/**
* Return true if the specific protocol version name is
* of TLS 1.2 or newer version.
*/
static boolean useTLS12PlusSpec(String name) {
ProtocolVersion pv = ProtocolVersion.nameOf(name);
if (pv != null && pv != NONE) {
return pv.id >= TLS12.id;
}
return false;
}
/**
* Compares this object with the specified ProtocolVersion.
*
* @see java.lang.Comparable
*/
int compare(ProtocolVersion that) {
if (this == that) {
return 0;
}
if (this == GMTLS) {
return 1;
} else if (that == GMTLS) {
return -1;
}
if (this == ProtocolVersion.NONE) {
return -1;
} else if (that == ProtocolVersion.NONE) {
return 1;
}
return this.id - that.id;
}
/**
* Return true if this ProtocolVersion object is of TLS 1.3 or
* newer version.
*/
boolean useTLS13PlusSpec() {
return this.id >= TLS13.id;
}
/**
* Return true if this ProtocolVersion object is of TLS 1.2 or
* newer version.
*/
boolean useTLS12PlusSpec() {
return this.id >= TLS12.id;
}
/**
* Return true if this ProtocolVersion object is of
* TLS 1.1 or newer version.
*/
boolean useTLS11PlusSpec() {
return this.id >= TLS11.id;
}
/**
* Return true if this ProtocolVersion object is of TLS 1.0 or
* newer version.
*/
boolean useTLS10PlusSpec() {
return this.id >= TLS10.id;
}
/**
* Return true if this ProtocolVersion object is of TLS 1.0 or
* newer version.
*/
static boolean useTLS10PlusSpec(int id) {
// GMTLS > TLS1.0
if (id == GMTLS.id) {
return true;
}
return id >= TLS10.id;
}
/**
* Return true if this ProtocolVersion object is of TLS 1.3 or
* newer version.
*/
static boolean useTLS13PlusSpec(int id) {
return id >= TLS13.id;
}
boolean useGMTLSSpec() {
return this.id == GMTLS.id;
}
/**
* Select the lower of that suggested protocol version and
* the highest of the listed protocol versions.
*
* @param listedVersions the listed protocol version
* @param suggestedVersion the suggested protocol version
*/
static ProtocolVersion selectedFrom(
List listedVersions, int suggestedVersion) {
ProtocolVersion selectedVersion = ProtocolVersion.NONE;
for (ProtocolVersion pv : listedVersions) {
if (pv.id == suggestedVersion) {
return pv;
} else if (pv != GMTLS) {
if (pv.id < suggestedVersion && pv.id > selectedVersion.id) {
selectedVersion = pv;
}
}
}
return selectedVersion;
}
}
