1 /*

     2  * Copyright (c) 2011, 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.krb5;

    27 

    28 import java.io.IOException;

    29 import java.util.Collection;

    30 import java.util.Hashtable;

    31 import java.util.Vector;

    32 

    33 

    34 public class SCDynamicStoreConfig {

    35     private static native void installNotificationCallback();

    36     private static native Hashtable<String, Object> getKerberosConfig();

    37 

    38     static {

    39         java.security.AccessController.doPrivileged(new sun.security.action.LoadLibraryAction("osx"));

    40         installNotificationCallback();

    41     }

    42 

    43     private static Vector<String> unwrapHost(Collection<Hashtable<String, String>> c) {

    44         Vector<String> vector = new Vector<String>();

    45         for (Hashtable<String, String> m : c) {

    46             vector.add(m.get("host"));

    47         }

    48         return vector;

    49     }

    50 

    51     /**

    52      * convertRealmConfigs: Maps the Object graph that we get from JNI to the

    53      * object graph that Config expects. Also the items inside the kdc array

    54      * are wrapped inside Hashtables

    55      */

    56     @SuppressWarnings("unchecked")

    57     private static Hashtable<String, Object> convertRealmConfigs(Hashtable<String, ?> configs) {

    58         Hashtable<String, Object> realmsTable = new Hashtable<String, Object>();

    59 

    60         for (String realm : configs.keySet()) {

    61             // get the kdc

    62             Hashtable<String, Collection<?>> map = (Hashtable<String, Collection<?>>) configs.get(realm);

    63             Collection<Hashtable<String, String>> kdc = (Collection<Hashtable<String, String>>) map.get("kdc");

    64 

    65             // put the kdc into the realmMap

    66             Hashtable<String, Vector<String>> realmMap = new Hashtable<String, Vector<String>>();

    67             if (kdc != null) realmMap.put("kdc", unwrapHost(kdc));

    68 

    69             // put the admin server into the realmMap

    70             Collection<Hashtable<String, String>> kadmin = (Collection<Hashtable<String, String>>) map.get("kadmin");

    71             if (kadmin != null) realmMap.put("admin_server", unwrapHost(kadmin));

    72 

    73             // add the full entry to the realmTable

    74             realmsTable.put(realm, realmMap);

    75         }

    76 

    77         return realmsTable;

    78     }

    79 

    80     /**

    81      * Calls down to JNI to get the raw Kerberos Config and maps the object

    82      * graph to the one that Kerberos Config in Java expects

    83      *

    84      * @return

    85      * @throws IOException

    86      */

    87     @SuppressWarnings("unchecked")

    88     public static Hashtable<String, Object> getConfig() throws IOException {

    89         Hashtable<String, Object> stanzaTable = getKerberosConfig();

    90         if (stanzaTable == null) {

    91             throw new IOException("Could not load configuration from SCDynamicStore");

    92         }

    93         //System.out.println("Raw map from JNI: " + stanzaTable);

    94 

    95         // convert SCDynamicStore realm structure to Java realm structure

    96         Hashtable<String, ?> realms = (Hashtable<String, ?>) stanzaTable.get("realms");

    97         if (realms != null) {

    98             stanzaTable.remove("realms");

    99             Hashtable<String, Object> realmsTable = convertRealmConfigs(realms);

   100             stanzaTable.put("realms", realmsTable);

   101         }

   102 

   103        // System.out.println("stanzaTable : " + stanzaTable);

   104         return stanzaTable;

   105     }

   106 }