544 lines
19 KiB
Java
544 lines
19 KiB
Java
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/*
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* Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package javax.net.ssl;
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import java.security.AlgorithmConstraints;
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import java.util.Map;
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import java.util.List;
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import java.util.HashMap;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.LinkedHashMap;
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/**
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* Encapsulates parameters for an SSL/TLS connection. The parameters
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* are the list of ciphersuites to be accepted in an SSL/TLS handshake,
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* the list of protocols to be allowed, the endpoint identification
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* algorithm during SSL/TLS handshaking, the Server Name Indication (SNI),
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* the algorithm constraints and whether SSL/TLS servers should request
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* or require client authentication, etc.
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* <p>
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* SSLParameters can be created via the constructors in this class.
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* Objects can also be obtained using the <code>getSSLParameters()</code>
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* methods in
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* {@link SSLSocket#getSSLParameters SSLSocket} and
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* {@link SSLServerSocket#getSSLParameters SSLServerSocket} and
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* {@link SSLEngine#getSSLParameters SSLEngine} or the
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* {@link SSLContext#getDefaultSSLParameters getDefaultSSLParameters()} and
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* {@link SSLContext#getSupportedSSLParameters getSupportedSSLParameters()}
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* methods in <code>SSLContext</code>.
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* <p>
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* SSLParameters can be applied to a connection via the methods
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* {@link SSLSocket#setSSLParameters SSLSocket.setSSLParameters()} and
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* {@link SSLServerSocket#setSSLParameters SSLServerSocket.setSSLParameters()}
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* and {@link SSLEngine#setSSLParameters SSLEngine.setSSLParameters()}.
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*
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* @see SSLSocket
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* @see SSLEngine
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* @see SSLContext
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*
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* @since 1.6
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*/
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public class SSLParameters {
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private String[] cipherSuites;
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private String[] protocols;
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private boolean wantClientAuth;
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private boolean needClientAuth;
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private String identificationAlgorithm;
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private AlgorithmConstraints algorithmConstraints;
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private Map<Integer, SNIServerName> sniNames = null;
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private Map<Integer, SNIMatcher> sniMatchers = null;
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private boolean preferLocalCipherSuites;
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// Android-added: Integrate ALPN-related methods from OpenJDK 9+181
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private String[] applicationProtocols = new String[0];
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/**
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* Constructs SSLParameters.
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* <p>
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* The values of cipherSuites, protocols, cryptographic algorithm
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* constraints, endpoint identification algorithm, server names and
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* server name matchers are set to <code>null</code>, useCipherSuitesOrder,
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* wantClientAuth and needClientAuth are set to <code>false</code>.
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*/
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public SSLParameters() {
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// empty
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}
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/**
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* Constructs SSLParameters from the specified array of ciphersuites.
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* <p>
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* Calling this constructor is equivalent to calling the no-args
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* constructor followed by
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* <code>setCipherSuites(cipherSuites);</code>.
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*
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* @param cipherSuites the array of ciphersuites (or null)
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*/
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public SSLParameters(String[] cipherSuites) {
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setCipherSuites(cipherSuites);
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}
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/**
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* Constructs SSLParameters from the specified array of ciphersuites
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* and protocols.
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* <p>
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* Calling this constructor is equivalent to calling the no-args
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* constructor followed by
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* <code>setCipherSuites(cipherSuites); setProtocols(protocols);</code>.
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*
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* @param cipherSuites the array of ciphersuites (or null)
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* @param protocols the array of protocols (or null)
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*/
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public SSLParameters(String[] cipherSuites, String[] protocols) {
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setCipherSuites(cipherSuites);
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setProtocols(protocols);
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}
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private static String[] clone(String[] s) {
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return (s == null) ? null : s.clone();
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}
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/**
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* Returns a copy of the array of ciphersuites or null if none
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* have been set.
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*
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* @return a copy of the array of ciphersuites or null if none
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* have been set.
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*/
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public String[] getCipherSuites() {
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return clone(cipherSuites);
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}
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/**
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* Sets the array of ciphersuites.
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*
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* @param cipherSuites the array of ciphersuites (or null)
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*/
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public void setCipherSuites(String[] cipherSuites) {
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this.cipherSuites = clone(cipherSuites);
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}
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/**
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* Returns a copy of the array of protocols or null if none
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* have been set.
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*
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* @return a copy of the array of protocols or null if none
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* have been set.
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*/
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public String[] getProtocols() {
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return clone(protocols);
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}
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/**
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* Sets the array of protocols.
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*
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* @param protocols the array of protocols (or null)
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*/
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public void setProtocols(String[] protocols) {
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this.protocols = clone(protocols);
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}
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/**
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* Returns whether client authentication should be requested.
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*
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* @return whether client authentication should be requested.
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*/
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public boolean getWantClientAuth() {
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return wantClientAuth;
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}
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/**
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* Sets whether client authentication should be requested. Calling
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* this method clears the <code>needClientAuth</code> flag.
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*
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* @param wantClientAuth whether client authentication should be requested
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*/
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public void setWantClientAuth(boolean wantClientAuth) {
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this.wantClientAuth = wantClientAuth;
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this.needClientAuth = false;
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}
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/**
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* Returns whether client authentication should be required.
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*
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* @return whether client authentication should be required.
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*/
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public boolean getNeedClientAuth() {
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return needClientAuth;
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}
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/**
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* Sets whether client authentication should be required. Calling
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* this method clears the <code>wantClientAuth</code> flag.
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*
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* @param needClientAuth whether client authentication should be required
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*/
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public void setNeedClientAuth(boolean needClientAuth) {
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this.wantClientAuth = false;
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this.needClientAuth = needClientAuth;
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}
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/**
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* Returns the cryptographic algorithm constraints.
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*
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* @return the cryptographic algorithm constraints, or null if the
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* constraints have not been set
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*
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* @see #setAlgorithmConstraints(AlgorithmConstraints)
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*
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* @since 1.7
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*/
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public AlgorithmConstraints getAlgorithmConstraints() {
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return algorithmConstraints;
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}
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/**
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* Sets the cryptographic algorithm constraints, which will be used
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* in addition to any configured by the runtime environment.
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* <p>
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* If the <code>constraints</code> parameter is non-null, every
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* cryptographic algorithm, key and algorithm parameters used in the
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* SSL/TLS handshake must be permitted by the constraints.
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*
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* @param constraints the algorithm constraints (or null)
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*
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* @since 1.7
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*/
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public void setAlgorithmConstraints(AlgorithmConstraints constraints) {
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// the constraints object is immutable
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this.algorithmConstraints = constraints;
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}
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/**
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* Gets the endpoint identification algorithm.
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*
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* @return the endpoint identification algorithm, or null if none
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* has been set.
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*
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* @see X509ExtendedTrustManager
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* @see #setEndpointIdentificationAlgorithm(String)
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*
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* @since 1.7
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*/
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public String getEndpointIdentificationAlgorithm() {
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return identificationAlgorithm;
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}
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// Android-changed: Use "on-path" to comply with Android's inclusive language guidance.
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/**
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* Sets the endpoint identification algorithm.
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* <p>
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* If the <code>algorithm</code> parameter is non-null or non-empty, the
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* endpoint identification/verification procedures must be handled during
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* SSL/TLS handshaking. This is to prevent on-path attacks.
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*
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* @param algorithm The standard string name of the endpoint
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* identification algorithm (or null). See Appendix A in the <a href=
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* "{@docRoot}/../technotes/guides/security/crypto/CryptoSpec.html#AppA">
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* Java Cryptography Architecture API Specification & Reference </a>
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* for information about standard algorithm names.
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*
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* @see X509ExtendedTrustManager
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*
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* @since 1.7
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*/
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public void setEndpointIdentificationAlgorithm(String algorithm) {
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this.identificationAlgorithm = algorithm;
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}
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/**
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* Sets the desired {@link SNIServerName}s of the Server Name
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* Indication (SNI) parameter.
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* <P>
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* This method is only useful to {@link SSLSocket}s or {@link SSLEngine}s
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* operating in client mode.
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* <P>
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* Note that the {@code serverNames} list is cloned
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* to protect against subsequent modification.
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*
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* @param serverNames
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* the list of desired {@link SNIServerName}s (or null)
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*
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* @throws NullPointerException if the {@code serverNames}
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* contains {@code null} element
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* @throws IllegalArgumentException if the {@code serverNames}
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* contains more than one name of the same name type
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*
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* @see SNIServerName
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* @see #getServerNames()
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*
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* @since 1.8
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*/
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public final void setServerNames(List<SNIServerName> serverNames) {
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if (serverNames != null) {
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if (!serverNames.isEmpty()) {
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sniNames = new LinkedHashMap<>(serverNames.size());
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for (SNIServerName serverName : serverNames) {
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if (sniNames.put(serverName.getType(),
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serverName) != null) {
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throw new IllegalArgumentException(
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"Duplicated server name of type " +
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serverName.getType());
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}
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}
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} else {
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sniNames = Collections.<Integer, SNIServerName>emptyMap();
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}
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} else {
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sniNames = null;
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}
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}
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/**
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* Returns a {@link List} containing all {@link SNIServerName}s of the
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* Server Name Indication (SNI) parameter, or null if none has been set.
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* <P>
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* This method is only useful to {@link SSLSocket}s or {@link SSLEngine}s
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* operating in client mode.
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* <P>
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* For SSL/TLS connections, the underlying SSL/TLS provider
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* may specify a default value for a certain server name type. In
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* client mode, it is recommended that, by default, providers should
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* include the server name indication whenever the server can be located
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* by a supported server name type.
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* <P>
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* It is recommended that providers initialize default Server Name
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* Indications when creating {@code SSLSocket}/{@code SSLEngine}s.
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* In the following examples, the server name could be represented by an
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* instance of {@link SNIHostName} which has been initialized with the
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* hostname "www.example.com" and type
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* {@link StandardConstants#SNI_HOST_NAME}.
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*
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* <pre>
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* Socket socket =
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* sslSocketFactory.createSocket("www.example.com", 443);
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* </pre>
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* or
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* <pre>
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* SSLEngine engine =
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* sslContext.createSSLEngine("www.example.com", 443);
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* </pre>
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* <P>
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*
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* @return null or an immutable list of non-null {@link SNIServerName}s
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*
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* @see List
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* @see #setServerNames(List)
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*
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* @since 1.8
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*/
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public final List<SNIServerName> getServerNames() {
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if (sniNames != null) {
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if (!sniNames.isEmpty()) {
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return Collections.<SNIServerName>unmodifiableList(
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new ArrayList<>(sniNames.values()));
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} else {
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return Collections.<SNIServerName>emptyList();
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}
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}
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return null;
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}
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/**
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* Sets the {@link SNIMatcher}s of the Server Name Indication (SNI)
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* parameter.
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* <P>
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* This method is only useful to {@link SSLSocket}s or {@link SSLEngine}s
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* operating in server mode.
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* <P>
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* Note that the {@code matchers} collection is cloned to protect
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* against subsequent modification.
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*
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* @param matchers
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* the collection of {@link SNIMatcher}s (or null)
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*
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* @throws NullPointerException if the {@code matchers}
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* contains {@code null} element
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* @throws IllegalArgumentException if the {@code matchers}
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||
|
|
* contains more than one name of the same name type
|
||
|
|
*
|
||
|
|
* @see Collection
|
||
|
|
* @see SNIMatcher
|
||
|
|
* @see #getSNIMatchers()
|
||
|
|
*
|
||
|
|
* @since 1.8
|
||
|
|
*/
|
||
|
|
public final void setSNIMatchers(Collection<SNIMatcher> matchers) {
|
||
|
|
if (matchers != null) {
|
||
|
|
if (!matchers.isEmpty()) {
|
||
|
|
sniMatchers = new HashMap<>(matchers.size());
|
||
|
|
for (SNIMatcher matcher : matchers) {
|
||
|
|
if (sniMatchers.put(matcher.getType(),
|
||
|
|
matcher) != null) {
|
||
|
|
throw new IllegalArgumentException(
|
||
|
|
"Duplicated server name of type " +
|
||
|
|
matcher.getType());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
sniMatchers = Collections.<Integer, SNIMatcher>emptyMap();
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
sniMatchers = null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns a {@link Collection} containing all {@link SNIMatcher}s of the
|
||
|
|
* Server Name Indication (SNI) parameter, or null if none has been set.
|
||
|
|
* <P>
|
||
|
|
* This method is only useful to {@link SSLSocket}s or {@link SSLEngine}s
|
||
|
|
* operating in server mode.
|
||
|
|
* <P>
|
||
|
|
* For better interoperability, providers generally will not define
|
||
|
|
* default matchers so that by default servers will ignore the SNI
|
||
|
|
* extension and continue the handshake.
|
||
|
|
*
|
||
|
|
* @return null or an immutable collection of non-null {@link SNIMatcher}s
|
||
|
|
*
|
||
|
|
* @see SNIMatcher
|
||
|
|
* @see #setSNIMatchers(Collection)
|
||
|
|
*
|
||
|
|
* @since 1.8
|
||
|
|
*/
|
||
|
|
public final Collection<SNIMatcher> getSNIMatchers() {
|
||
|
|
if (sniMatchers != null) {
|
||
|
|
if (!sniMatchers.isEmpty()) {
|
||
|
|
return Collections.<SNIMatcher>unmodifiableList(
|
||
|
|
new ArrayList<>(sniMatchers.values()));
|
||
|
|
} else {
|
||
|
|
return Collections.<SNIMatcher>emptyList();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets whether the local cipher suites preference should be honored.
|
||
|
|
*
|
||
|
|
* @param honorOrder whether local cipher suites order in
|
||
|
|
* {@code #getCipherSuites} should be honored during
|
||
|
|
* SSL/TLS handshaking.
|
||
|
|
*
|
||
|
|
* @see #getUseCipherSuitesOrder()
|
||
|
|
*
|
||
|
|
* @since 1.8
|
||
|
|
*/
|
||
|
|
public final void setUseCipherSuitesOrder(boolean honorOrder) {
|
||
|
|
this.preferLocalCipherSuites = honorOrder;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns whether the local cipher suites preference should be honored.
|
||
|
|
*
|
||
|
|
* @return whether local cipher suites order in {@code #getCipherSuites}
|
||
|
|
* should be honored during SSL/TLS handshaking.
|
||
|
|
*
|
||
|
|
* @see #setUseCipherSuitesOrder(boolean)
|
||
|
|
*
|
||
|
|
* @since 1.8
|
||
|
|
*/
|
||
|
|
public final boolean getUseCipherSuitesOrder() {
|
||
|
|
return preferLocalCipherSuites;
|
||
|
|
}
|
||
|
|
|
||
|
|
// BEGIN Android-added: Integrate ALPN-related methods from OpenJDK 9+181
|
||
|
|
// Also removed references to DTLS in documentation; Android doesn't support DTLS.
|
||
|
|
/**
|
||
|
|
* Returns a prioritized array of application-layer protocol names that
|
||
|
|
* can be negotiated over the SSL/TLS protocols.
|
||
|
|
* <p>
|
||
|
|
* The array could be empty (zero-length), in which case protocol
|
||
|
|
* indications will not be used.
|
||
|
|
* <p>
|
||
|
|
* This method will return a new array each time it is invoked.
|
||
|
|
*
|
||
|
|
* @return a non-null, possibly zero-length array of application protocol
|
||
|
|
* {@code String}s. The array is ordered based on protocol
|
||
|
|
* preference, with {@code protocols[0]} being the most preferred.
|
||
|
|
* @see #setApplicationProtocols
|
||
|
|
* @since 9
|
||
|
|
*/
|
||
|
|
public String[] getApplicationProtocols() {
|
||
|
|
return applicationProtocols.clone();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets the prioritized array of application-layer protocol names that
|
||
|
|
* can be negotiated over the SSL/TLS protocols.
|
||
|
|
* <p>
|
||
|
|
* If application-layer protocols are supported by the underlying
|
||
|
|
* SSL/TLS implementation, this method configures which values can
|
||
|
|
* be negotiated by protocols such as <a
|
||
|
|
* href="http://www.ietf.org/rfc/rfc7301.txt"> RFC 7301 </a>, the
|
||
|
|
* Application Layer Protocol Negotiation (ALPN).
|
||
|
|
* <p>
|
||
|
|
* If this end of the connection is expected to offer application protocol
|
||
|
|
* values, all protocols configured by this method will be sent to the
|
||
|
|
* peer.
|
||
|
|
* <p>
|
||
|
|
* If this end of the connection is expected to select the application
|
||
|
|
* protocol value, the {@code protocols} configured by this method are
|
||
|
|
* compared with those sent by the peer. The first matched value becomes
|
||
|
|
* the negotiated value. If none of the {@code protocols} were actually
|
||
|
|
* requested by the peer, the underlying protocol will determine what
|
||
|
|
* action to take. (For example, ALPN will send a
|
||
|
|
* {@code "no_application_protocol"} alert and terminate the connection.)
|
||
|
|
* <p>
|
||
|
|
* @implSpec
|
||
|
|
* This method will make a copy of the {@code protocols} array.
|
||
|
|
*
|
||
|
|
* @param protocols an ordered array of application protocols,
|
||
|
|
* with {@code protocols[0]} being the most preferred.
|
||
|
|
* If the array is empty (zero-length), protocol
|
||
|
|
* indications will not be used.
|
||
|
|
* @throws IllegalArgumentException if protocols is null, or if
|
||
|
|
* any element in a non-empty array is null or an
|
||
|
|
* empty (zero-length) string
|
||
|
|
* @see #getApplicationProtocols
|
||
|
|
* @since 9
|
||
|
|
*/
|
||
|
|
public void setApplicationProtocols(String[] protocols) {
|
||
|
|
if (protocols == null) {
|
||
|
|
throw new IllegalArgumentException("protocols was null");
|
||
|
|
}
|
||
|
|
|
||
|
|
String[] tempProtocols = protocols.clone();
|
||
|
|
|
||
|
|
for (String p : tempProtocols) {
|
||
|
|
if (p == null || p.equals("")) {
|
||
|
|
throw new IllegalArgumentException(
|
||
|
|
"An element of protocols was null/empty");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
applicationProtocols = tempProtocols;
|
||
|
|
}
|
||
|
|
// END Android-added: Integrate ALPN-related methods from OpenJDK 9+181
|
||
|
|
}
|