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src/java.security.jgss/share/classes/sun/security/krb5/Config.java

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   1 /*
   2  * Copyright (c) 2000, 2019, 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


  31 package sun.security.krb5;
  32 
  33 import java.io.*;
  34 import java.nio.file.DirectoryStream;
  35 import java.nio.file.Files;
  36 import java.nio.file.Paths;
  37 import java.nio.file.Path;
  38 import java.security.PrivilegedAction;
  39 import java.util.*;
  40 import java.net.InetAddress;
  41 import java.net.UnknownHostException;
  42 import java.security.AccessController;
  43 import java.security.PrivilegedExceptionAction;
  44 import java.util.regex.Matcher;
  45 import java.util.regex.Pattern;
  46 
  47 import sun.net.dns.ResolverConfiguration;
  48 import sun.security.action.GetPropertyAction;
  49 import sun.security.krb5.internal.crypto.EType;
  50 import sun.security.krb5.internal.Krb5;
  51 import sun.security.util.SecurityProperties;
  52 
  53 /**
  54  * This class maintains key-value pairs of Kerberos configurable constants
  55  * from configuration file or from user specified system properties.
  56  */
  57 
  58 public class Config {
  59 
  60     /**
  61      * {@systemProperty sun.security.krb5.disableReferrals} property
  62      * indicating whether or not cross-realm referrals (RFC 6806) are
  63      * enabled.
  64      */
  65     public static final boolean DISABLE_REFERRALS;
  66 
  67     /**
  68      * {@systemProperty sun.security.krb5.maxReferrals} property
  69      * indicating the maximum number of cross-realm referral
  70      * hops allowed.
  71      */
  72     public static final int MAX_REFERRALS;
  73 
  74     static {
  75         String disableReferralsProp =
  76                 SecurityProperties.privilegedGetOverridable(
  77                         "sun.security.krb5.disableReferrals");
  78         if (disableReferralsProp != null) {
  79             DISABLE_REFERRALS = "true".equalsIgnoreCase(disableReferralsProp);
  80         } else {
  81             DISABLE_REFERRALS = false;
  82         }
  83 
  84         int maxReferralsValue = 5;
  85         String maxReferralsProp =
  86                 SecurityProperties.privilegedGetOverridable(
  87                         "sun.security.krb5.maxReferrals");
  88         try {
  89             maxReferralsValue = Integer.parseInt(maxReferralsProp);
  90         } catch (NumberFormatException e) {
  91         }
  92         MAX_REFERRALS = maxReferralsValue;
  93     }
  94 
  95     /*
  96      * Only allow a single instance of Config.
  97      */
  98     private static Config singleton = null;
  99 
 100     /*
 101      * Hashtable used to store configuration information.
 102      */
 103     private Hashtable<String,Object> stanzaTable = new Hashtable<>();
 104 
 105     private static boolean DEBUG = sun.security.krb5.internal.Krb5.DEBUG;
 106 
 107     // these are used for hexdecimal calculation.
 108     private static final int BASE16_0 = 1;
 109     private static final int BASE16_1 = 16;
 110     private static final int BASE16_2 = 16 * 16;
 111     private static final int BASE16_3 = 16 * 16 * 16;
 112 
 113     /**


   1 /*
   2  * Copyright (c) 2000, 2018, 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


  31 package sun.security.krb5;
  32 
  33 import java.io.*;
  34 import java.nio.file.DirectoryStream;
  35 import java.nio.file.Files;
  36 import java.nio.file.Paths;
  37 import java.nio.file.Path;
  38 import java.security.PrivilegedAction;
  39 import java.util.*;
  40 import java.net.InetAddress;
  41 import java.net.UnknownHostException;
  42 import java.security.AccessController;
  43 import java.security.PrivilegedExceptionAction;
  44 import java.util.regex.Matcher;
  45 import java.util.regex.Pattern;
  46 
  47 import sun.net.dns.ResolverConfiguration;
  48 import sun.security.action.GetPropertyAction;
  49 import sun.security.krb5.internal.crypto.EType;
  50 import sun.security.krb5.internal.Krb5;

  51 
  52 /**
  53  * This class maintains key-value pairs of Kerberos configurable constants
  54  * from configuration file or from user specified system properties.
  55  */
  56 
  57 public class Config {



































  58 
  59     /*
  60      * Only allow a single instance of Config.
  61      */
  62     private static Config singleton = null;
  63 
  64     /*
  65      * Hashtable used to store configuration information.
  66      */
  67     private Hashtable<String,Object> stanzaTable = new Hashtable<>();
  68 
  69     private static boolean DEBUG = sun.security.krb5.internal.Krb5.DEBUG;
  70 
  71     // these are used for hexdecimal calculation.
  72     private static final int BASE16_0 = 1;
  73     private static final int BASE16_1 = 16;
  74     private static final int BASE16_2 = 16 * 16;
  75     private static final int BASE16_3 = 16 * 16 * 16;
  76 
  77     /**


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