/* * Copyright (c) 2000, 2004, 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 * or visit www.oracle.com if you need additional information or have any * questions. */package javax.naming.ldap;import java.util.Iterator;import java.security.AccessController;import java.security.PrivilegedAction;import javax.naming.ConfigurationException;import javax.naming.NamingException;import com.sun.naming.internal.VersionHelper;import java.util.ServiceLoader;import java.util.ServiceConfigurationError;/** * This class implements the LDAPv3 Extended Request for StartTLS as * defined in * <a href="http://www.ietf.org/rfc/rfc2830.txt">Lightweight Directory * Access Protocol (v3): Extension for Transport Layer Security</a> * * The object identifier for StartTLS is 1.3.6.1.4.1.1466.20037 * and no extended request value is defined. *<p> * <tt>StartTlsRequest</tt>/<tt>StartTlsResponse</tt> are used to establish * a TLS connection over the existing LDAP connection associated with * the JNDI context on which <tt>extendedOperation()</tt> is invoked. * Typically, a JNDI program uses these classes as follows. * <blockquote><pre> * import javax.naming.ldap.*; * * // Open an LDAP association * LdapContext ctx = new InitialLdapContext(); * * // Perform a StartTLS extended operation * StartTlsResponse tls = * (StartTlsResponse) ctx.extendedOperation(new StartTlsRequest()); * * // Open a TLS connection (over the existing LDAP association) and get details * // of the negotiated TLS session: cipher suite, peer certificate, etc. * SSLSession session = tls.negotiate(); * * // ... use ctx to perform protected LDAP operations * * // Close the TLS connection (revert back to the underlying LDAP association) * tls.close(); * * // ... use ctx to perform unprotected LDAP operations * * // Close the LDAP association * ctx.close; * </pre></blockquote> * * @since 1.4 * @see StartTlsResponse * @author Vincent Ryan */public class StartTlsRequest implements ExtendedRequest { // Constant /** * The StartTLS extended request's assigned object identifier * is 1.3.6.1.4.1.1466.20037. */ public static final String OID = "1.3.6.1.4.1.1466.20037"; // Constructors /** * Constructs a StartTLS extended request. */ public StartTlsRequest() { } // ExtendedRequest methods /** * Retrieves the StartTLS request's object identifier string. * * @return The object identifier string, "1.3.6.1.4.1.1466.20037". */ public String getID() { return OID; } /** * Retrieves the StartTLS request's ASN.1 BER encoded value. * Since the request has no defined value, null is always * returned. * * @return The null value. */ public byte[] getEncodedValue() { return null; } /** * Creates an extended response object that corresponds to the * LDAP StartTLS extended request. * <p> * The result must be a concrete subclass of StartTlsResponse * and must have a public zero-argument constructor. * <p> * This method locates the implementation class by locating * configuration files that have the name: * <blockquote><tt> * META-INF/services/javax.naming.ldap.StartTlsResponse * </tt></blockquote> * The configuration files and their corresponding implementation classes must * be accessible to the calling thread's context class loader. * <p> * Each configuration file should contain a list of fully-qualified class * names, one per line. Space and tab characters surrounding each name, as * well as blank lines, are ignored. The comment character is <tt>'#'</tt> * (<tt>0x23</tt>); on each line all characters following the first comment * character are ignored. The file must be encoded in UTF-8. * <p> * This method will return an instance of the first implementation * class that it is able to load and instantiate successfully from * the list of class names collected from the configuration files. * This method uses the calling thread's context classloader to find the * configuration files and to load the implementation class. * <p> * If no class can be found in this way, this method will use * an implementation-specific way to locate an implementation. * If none is found, a NamingException is thrown. * * @param id The object identifier of the extended response. * Its value must be "1.3.6.1.4.1.1466.20037" or null. * Both values are equivalent. * @param berValue The possibly null ASN.1 BER encoded value of the * extended response. This is the raw BER bytes * including the tag and length of the response value. * It does not include the response OID. * Its value is ignored because a Start TLS response * is not expected to contain any response value. * @param offset The starting position in berValue of the bytes to use. * Its value is ignored because a Start TLS response * is not expected to contain any response value. * @param length The number of bytes in berValue to use. * Its value is ignored because a Start TLS response * is not expected to contain any response value. * @return The StartTLS extended response object. * @exception NamingException If a naming exception was encountered * while creating the StartTLS extended response object. */ public ExtendedResponse createExtendedResponse(String id, byte[] berValue, int offset, int length) throws NamingException { // Confirm that the object identifier is correct if ((id != null) && (!id.equals(OID))) { throw new ConfigurationException( "Start TLS received the following response instead of " + OID + ": " + id); } StartTlsResponse resp = null; ServiceLoader<StartTlsResponse> sl = ServiceLoader.load( StartTlsResponse.class, getContextClassLoader()); Iterator<StartTlsResponse> iter = sl.iterator(); while (resp == null && privilegedHasNext(iter)) { resp = iter.next(); } if (resp != null) { return resp; } try { VersionHelper helper = VersionHelper.getVersionHelper(); Class clas = helper.loadClass( "com.sun.jndi.ldap.ext.StartTlsResponseImpl"); resp = (StartTlsResponse) clas.newInstance(); } catch (IllegalAccessException e) { throw wrapException(e); } catch (InstantiationException e) { throw wrapException(e); } catch (ClassNotFoundException e) { throw wrapException(e); } return resp; } /* * Wrap an exception, thrown while attempting to load the StartTlsResponse * class, in a configuration exception. */ private ConfigurationException wrapException(Exception e) { ConfigurationException ce = new ConfigurationException( "Cannot load implementation of javax.naming.ldap.StartTlsResponse"); ce.setRootCause(e); return ce; } /* * Acquire the class loader associated with this thread. */ private final ClassLoader getContextClassLoader() { return (ClassLoader) AccessController.doPrivileged( new PrivilegedAction() { public Object run() { return Thread.currentThread().getContextClassLoader(); } } ); } private final static boolean privilegedHasNext(final Iterator iter) { Boolean answer = (Boolean) AccessController.doPrivileged( new PrivilegedAction() { public Object run() { return Boolean.valueOf(iter.hasNext()); } }); return answer.booleanValue(); } private static final long serialVersionUID = 4441679576360753397L;}
/*
* Copyright (c) 2000, 2004, 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
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package javax.naming.ldap;
import java.util.Iterator;
import java.security.AccessController;
import java.security.PrivilegedAction;
import javax.naming.ConfigurationException;
import javax.naming.NamingException;
import com.sun.naming.internal.VersionHelper;
import java.util.ServiceLoader;
import java.util.ServiceConfigurationError;
/**
* This class implements the LDAPv3 Extended Request for StartTLS as
* defined in
* <a href="http://www.ietf.org/rfc/rfc2830.txt">Lightweight Directory
* Access Protocol (v3): Extension for Transport Layer Security</a>
*
* The object identifier for StartTLS is 1.3.6.1.4.1.1466.20037
* and no extended request value is defined.
*<p>
* <tt>StartTlsRequest</tt>/<tt>StartTlsResponse</tt> are used to establish
* a TLS connection over the existing LDAP connection associated with
* the JNDI context on which <tt>extendedOperation()</tt> is invoked.
* Typically, a JNDI program uses these classes as follows.
* <blockquote><pre>
* import javax.naming.ldap.*;
*
* // Open an LDAP association
* LdapContext ctx = new InitialLdapContext();
*
* // Perform a StartTLS extended operation
* StartTlsResponse tls =
* (StartTlsResponse) ctx.extendedOperation(new StartTlsRequest());
*
* // Open a TLS connection (over the existing LDAP association) and get details
* // of the negotiated TLS session: cipher suite, peer certificate, etc.
* SSLSession session = tls.negotiate();
*
* // ... use ctx to perform protected LDAP operations
*
* // Close the TLS connection (revert back to the underlying LDAP association)
* tls.close();
*
* // ... use ctx to perform unprotected LDAP operations
*
* // Close the LDAP association
* ctx.close;
* </pre></blockquote>
*
* @since 1.4
* @see StartTlsResponse
* @author Vincent Ryan
*/
public class StartTlsRequest implements ExtendedRequest {
// Constant
/**
* The StartTLS extended request's assigned object identifier
* is 1.3.6.1.4.1.1466.20037.
*/
public static final String OID = "1.3.6.1.4.1.1466.20037";
// Constructors
/**
* Constructs a StartTLS extended request.
*/
public StartTlsRequest() {
}
// ExtendedRequest methods
/**
* Retrieves the StartTLS request's object identifier string.
*
* @return The object identifier string, "1.3.6.1.4.1.1466.20037".
*/
public String getID() {
return OID;
}
/**
* Retrieves the StartTLS request's ASN.1 BER encoded value.
* Since the request has no defined value, null is always
* returned.
*
* @return The null value.
*/
public byte[] getEncodedValue() {
return null;
}
/**
* Creates an extended response object that corresponds to the
* LDAP StartTLS extended request.
* <p>
* The result must be a concrete subclass of StartTlsResponse
* and must have a public zero-argument constructor.
* <p>
* This method locates the implementation class by locating
* configuration files that have the name:
* <blockquote><tt>
* META-INF/services/javax.naming.ldap.StartTlsResponse
* </tt></blockquote>
* The configuration files and their corresponding implementation classes must
* be accessible to the calling thread's context class loader.
* <p>
* Each configuration file should contain a list of fully-qualified class
* names, one per line. Space and tab characters surrounding each name, as
* well as blank lines, are ignored. The comment character is <tt>'#'</tt>
* (<tt>0x23</tt>); on each line all characters following the first comment
* character are ignored. The file must be encoded in UTF-8.
* <p>
* This method will return an instance of the first implementation
* class that it is able to load and instantiate successfully from
* the list of class names collected from the configuration files.
* This method uses the calling thread's context classloader to find the
* configuration files and to load the implementation class.
* <p>
* If no class can be found in this way, this method will use
* an implementation-specific way to locate an implementation.
* If none is found, a NamingException is thrown.
*
* @param id The object identifier of the extended response.
* Its value must be "1.3.6.1.4.1.1466.20037" or null.
* Both values are equivalent.
* @param berValue The possibly null ASN.1 BER encoded value of the
* extended response. This is the raw BER bytes
* including the tag and length of the response value.
* It does not include the response OID.
* Its value is ignored because a Start TLS response
* is not expected to contain any response value.
* @param offset The starting position in berValue of the bytes to use.
* Its value is ignored because a Start TLS response
* is not expected to contain any response value.
* @param length The number of bytes in berValue to use.
* Its value is ignored because a Start TLS response
* is not expected to contain any response value.
* @return The StartTLS extended response object.
* @exception NamingException If a naming exception was encountered
* while creating the StartTLS extended response object.
*/
public ExtendedResponse createExtendedResponse(String id, byte[] berValue,
int offset, int length) throws NamingException {
// Confirm that the object identifier is correct
if ((id != null) && (!id.equals(OID))) {
throw new ConfigurationException(
"Start TLS received the following response instead of " +
OID + ": " + id);
}
StartTlsResponse resp = null;
ServiceLoader<StartTlsResponse> sl = ServiceLoader.load(
StartTlsResponse.class, getContextClassLoader());
Iterator<StartTlsResponse> iter = sl.iterator();
while (resp == null && privilegedHasNext(iter)) {
resp = iter.next();
}
if (resp != null) {
return resp;
}
try {
VersionHelper helper = VersionHelper.getVersionHelper();
Class clas = helper.loadClass(
"com.sun.jndi.ldap.ext.StartTlsResponseImpl");
resp = (StartTlsResponse) clas.newInstance();
} catch (IllegalAccessException e) {
throw wrapException(e);
} catch (InstantiationException e) {
throw wrapException(e);
} catch (ClassNotFoundException e) {
throw wrapException(e);
}
return resp;
}
/*
* Wrap an exception, thrown while attempting to load the StartTlsResponse
* class, in a configuration exception.
*/
private ConfigurationException wrapException(Exception e) {
ConfigurationException ce = new ConfigurationException(
"Cannot load implementation of javax.naming.ldap.StartTlsResponse");
ce.setRootCause(e);
return ce;
}
/*
* Acquire the class loader associated with this thread.
*/
private final ClassLoader getContextClassLoader() {
return (ClassLoader) AccessController.doPrivileged(
new PrivilegedAction() {
public Object run() {
return Thread.currentThread().getContextClassLoader();
}
}
);
}
private final static boolean privilegedHasNext(final Iterator iter) {
Boolean answer = (Boolean) AccessController.doPrivileged(
new PrivilegedAction() {
public Object run() {
return Boolean.valueOf(iter.hasNext());
}
});
return answer.booleanValue();
}
private static final long serialVersionUID = 4441679576360753397L;
}