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*
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* published by the Free Software Foundation. Oracle designates this
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*
* 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,
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*
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package javax.net.ssl;
import java.security.AlgorithmConstraints;
/**
* Encapsulates parameters for an SSL/TLS connection. The parameters
* are the list of ciphersuites to be accepted in an SSL/TLS handshake,
* the list of protocols to be allowed, the endpoint identification
* algorithm during SSL/TLS handshaking, the algorithm constraints and
* whether SSL/TLS servers should request or require client authentication.
* <p>
* SSLParameters can be created via the constructors in this class.
* Objects can also be obtained using the <code>getSSLParameters()</code>
* methods in
* {@link SSLSocket#getSSLParameters SSLSocket} and
* {@link SSLServerSocket#getSSLParameters SSLServerSocket} and
* {@link SSLEngine#getSSLParameters SSLEngine} or the
* {@link SSLContext#getDefaultSSLParameters getDefaultSSLParameters()} and
* {@link SSLContext#getSupportedSSLParameters getSupportedSSLParameters()}
* methods in <code>SSLContext</code>.
* <p>
* SSLParameters can be applied to a connection via the methods
* {@link SSLSocket#setSSLParameters SSLSocket.setSSLParameters()} and
* {@link SSLServerSocket#setSSLParameters SSLServerSocket.setSSLParameters()}
* and {@link SSLEngine#setSSLParameters SSLEngine.getSSLParameters()}.
*
* @see SSLSocket
* @see SSLEngine
* @see SSLContext
*
* @since 1.6
*/
public class SSLParameters {
private String[] cipherSuites;
private String[] protocols;
private boolean wantClientAuth;
private boolean needClientAuth;
private String identificationAlgorithm;
private AlgorithmConstraints algorithmConstraints;
/**
* Constructs SSLParameters.
* <p>
* The cipherSuites and protocols values are set to <code>null</code>,
* wantClientAuth and needClientAuth are set to <code>false</code>.
*/
public SSLParameters() {
// empty
}
/**
* Constructs SSLParameters from the specified array of ciphersuites.
* <p>
* Calling this constructor is equivalent to calling the no-args
* constructor followed by
* <code>setCipherSuites(cipherSuites);</code>.
*
* @param cipherSuites the array of ciphersuites (or null)
*/
public SSLParameters(String[] cipherSuites) {
setCipherSuites(cipherSuites);
}
/**
* Constructs SSLParameters from the specified array of ciphersuites
* and protocols.
* <p>
* Calling this constructor is equivalent to calling the no-args
* constructor followed by
* <code>setCipherSuites(cipherSuites); setProtocols(protocols);</code>.
*
* @param cipherSuites the array of ciphersuites (or null)
* @param protocols the array of protocols (or null)
*/
public SSLParameters(String[] cipherSuites, String[] protocols) {
setCipherSuites(cipherSuites);
setProtocols(protocols);
}
private static String[] clone(String[] s) {
return (s == null) ? null : s.clone();
}
/**
* Returns a copy of the array of ciphersuites or null if none
* have been set.
*
* @return a copy of the array of ciphersuites or null if none
* have been set.
*/
public String[] getCipherSuites() {
return clone(cipherSuites);
}
/**
* Sets the array of ciphersuites.
*
* @param cipherSuites the array of ciphersuites (or null)
*/
public void setCipherSuites(String[] cipherSuites) {
this.cipherSuites = clone(cipherSuites);
}
/**
* Returns a copy of the array of protocols or null if none
* have been set.
*
* @return a copy of the array of protocols or null if none
* have been set.
*/
public String[] getProtocols() {
return clone(protocols);
}
/**
* Sets the array of protocols.
*
* @param protocols the array of protocols (or null)
*/
public void setProtocols(String[] protocols) {
this.protocols = clone(protocols);
}
/**
* Returns whether client authentication should be requested.
*
* @return whether client authentication should be requested.
*/
public boolean getWantClientAuth() {
return wantClientAuth;
}
/**
* Sets whether client authentication should be requested. Calling
* this method clears the <code>needClientAuth</code> flag.
*
* @param wantClientAuth whether client authentication should be requested
*/
public void setWantClientAuth(boolean wantClientAuth) {
this.wantClientAuth = wantClientAuth;
this.needClientAuth = false;
}
/**
* Returns whether client authentication should be required.
*
* @return whether client authentication should be required.
*/
public boolean getNeedClientAuth() {
return needClientAuth;
}
/**
* Sets whether client authentication should be required. Calling
* this method clears the <code>wantClientAuth</code> flag.
*
* @param needClientAuth whether client authentication should be required
*/
public void setNeedClientAuth(boolean needClientAuth) {
this.wantClientAuth = false;
this.needClientAuth = needClientAuth;
}
/**
* Returns the cryptographic algorithm constraints.
*
* @return the cryptographic algorithm constraints, or null if the
* constraints have not been set
*
* @see #setAlgorithmConstraints(AlgorithmConstraints)
*
* @since 1.7
*/
public AlgorithmConstraints getAlgorithmConstraints() {
return algorithmConstraints;
}
/**
* Sets the cryptographic algorithm constraints, which will be used
* in addition to any configured by the runtime environment.
* <p>
* If the <code>constraints</code> parameter is non-null, every
* cryptographic algorithm, key and algorithm parameters used in the
* SSL/TLS handshake must be permitted by the constraints.
*
* @param constraints the algorithm constraints (or null)
*
* @since 1.7
*/
public void setAlgorithmConstraints(AlgorithmConstraints constraints) {
// the constraints object is immutable
this.algorithmConstraints = constraints;
}
/**
* Gets the endpoint identification algorithm.
*
* @return the endpoint identification algorithm, or null if none
* has been set.
*
* @see X509ExtendedTrustManager
* @see #setEndpointIdentificationAlgorithm(String)
*
* @since 1.7
*/
public String getEndpointIdentificationAlgorithm() {
return identificationAlgorithm;
}
/**
* Sets the endpoint identification algorithm.
* <p>
* If the <code>algorithm</code> parameter is non-null or non-empty, the
* endpoint identification/verification procedures must be handled during
* SSL/TLS handshaking. This is to prevent man-in-the-middle attacks.
*
* @param algorithm The standard string name of the endpoint
* identification algorithm (or null). See Appendix A in the <a href=
* "{@docRoot}/../technotes/guides/security/crypto/CryptoSpec.html#AppA">
* Java Cryptography Architecture API Specification & Reference </a>
* for information about standard algorithm names.
*
* @see X509ExtendedTrustManager
*
* @since 1.7
*/
public void setEndpointIdentificationAlgorithm(String algorithm) {
this.identificationAlgorithm = algorithm;
}
}