1 /*

     2  * Copyright (c) 2009, 2012, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package sun.security.provider.certpath;

    27 

    28 import java.net.URI;

    29 import java.util.Collection;

    30 import java.util.HashMap;

    31 import java.util.Map;

    32 import java.security.AccessController;

    33 import java.security.NoSuchAlgorithmException;

    34 import java.security.InvalidAlgorithmParameterException;

    35 import java.security.PrivilegedActionException;

    36 import java.security.PrivilegedExceptionAction;

    37 import java.security.cert.CertStore;

    38 import java.security.cert.CertStoreException;

    39 import java.security.cert.X509CertSelector;

    40 import java.security.cert.X509CRLSelector;

    41 import javax.security.auth.x500.X500Principal;

    42 import java.io.IOException;

    43 

    44 import sun.security.util.Cache;

    45 

    46 /**

    47  * Helper used by URICertStore and others when delegating to another CertStore

    48  * to fetch certs and CRLs.

    49  */

    50 

    51 public abstract class CertStoreHelper {

    52 

    53     private static final int NUM_TYPES = 2;

    54     private final static Map<String,String> classMap = new HashMap<>(NUM_TYPES);

    55     static {

    56         classMap.put(

    57             "LDAP",

    58             "sun.security.provider.certpath.ldap.LDAPCertStoreHelper");

    59         classMap.put(

    60             "SSLServer",

    61             "sun.security.provider.certpath.ssl.SSLServerCertStoreHelper");

    62     };

    63     private static Cache<String, CertStoreHelper> cache

    64         = Cache.newSoftMemoryCache(NUM_TYPES);

    65 

    66     public static CertStoreHelper getInstance(final String type)

    67         throws NoSuchAlgorithmException

    68     {

    69         CertStoreHelper helper = cache.get(type);

    70         if (helper != null) {

    71             return helper;

    72         }

    73         final String cl = classMap.get(type);

    74         if (cl == null) {

    75             throw new NoSuchAlgorithmException(type + " not available");

    76         }

    77         try {

    78             helper = AccessController.doPrivileged(

    79                 new PrivilegedExceptionAction<CertStoreHelper>() {

    80                     public CertStoreHelper run() throws ClassNotFoundException {

    81                         try {

    82                             Class<?> c = Class.forName(cl, true, null);

    83                             CertStoreHelper csh

    84                                 = (CertStoreHelper)c.newInstance();

    85                             cache.put(type, csh);

    86                             return csh;

    87                         } catch (InstantiationException |

    88                                  IllegalAccessException e) {

    89                             throw new AssertionError(e);

    90                         }

    91                     }

    92             });

    93             return helper;

    94         } catch (PrivilegedActionException e) {

    95             throw new NoSuchAlgorithmException(type + " not available",

    96                                                e.getException());

    97         }

    98     }

    99 

   100     static boolean isCausedByNetworkIssue(String type, CertStoreException cse) {

   101         switch (type) {

   102             case "LDAP":

   103             case "SSLServer":

   104                 try {

   105                     CertStoreHelper csh = CertStoreHelper.getInstance(type);

   106                     return csh.isCausedByNetworkIssue(cse);

   107                 } catch (NoSuchAlgorithmException nsae) {

   108                     return false;

   109                 }

   110             case "URI":

   111                 Throwable t = cse.getCause();

   112                 return (t != null && t instanceof IOException);

   113             default:

   114                 // we don't know about any other remote CertStore types

   115                 return false;

   116         }

   117     }

   118 

   119     /**

   120      * Returns a CertStore using the given URI as parameters.

   121      */

   122     public abstract CertStore getCertStore(URI uri)

   123         throws NoSuchAlgorithmException, InvalidAlgorithmParameterException;

   124 

   125     /**

   126      * Wraps an existing X509CertSelector when needing to avoid DN matching

   127      * issues.

   128      */

   129     public abstract X509CertSelector wrap(X509CertSelector selector,

   130                           X500Principal certSubject,

   131                           String dn)

   132         throws IOException;

   133 

   134     /**

   135      * Wraps an existing X509CRLSelector when needing to avoid DN matching

   136      * issues.

   137      */

   138     public abstract X509CRLSelector wrap(X509CRLSelector selector,

   139                          Collection<X500Principal> certIssuers,

   140                          String dn)

   141         throws IOException;

   142 

   143     /**

   144      * Returns true if the cause of the CertStoreException is a network

   145      * related issue.

   146      */

   147     public abstract boolean isCausedByNetworkIssue(CertStoreException e);

   148 }