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

rev 10772 : imported patch 8077102-dns_lookup_realm-should-be-false-by-default

*** 230,239 ****
--- 230,264 ----
          if (v == null) return null;
          return v.lastElement();
      }
  
      /**
+      * Gets the boolean value for the specified keys. Returns TRUE if the
+      * string value is "yes", or "true", FALSE if "no", or "false", or null
+      * if otherwise or not defined. The comparision is case-insensitive.
+      *
+      * @param keys the keys, see {@link #get(String...)}
+      * @return the boolean value, or null if there is no value defined or the
+      * value does not look like a boolean value.
+      * @throws IllegalArgumentException see {@link #get(String...)}
+      */
+     private Boolean getBooleanObject(String... keys) {
+         String s = get(keys);
+         if (s == null) {
+             return null;
+         }
+         switch (s.toLowerCase(Locale.US)) {
+             case "yes": case "true":
+                 return Boolean.TRUE;
+             case "no": case "false":
+                 return Boolean.FALSE;
+             default:
+                 return null;
+         }
+     }
+ 
+     /**
       * Gets all values for the specified keys.
       * @throws IllegalArgumentException if any of the keys is illegal
       *         (See {@link #get})
       */
      public String getAll(String... keys) {
*** 940,975 ****
      }
  
      /**
       * Check if need to use DNS to locate Kerberos services
       */
!     private boolean useDNS(String name) {
!         String value = get("libdefaults", name);
!         if (value == null) {
!             value = get("libdefaults", "dns_fallback");
!             if ("false".equalsIgnoreCase(value)) {
!                 return false;
!             } else {
!                 return true;
!             }
!         } else {
!             return value.equalsIgnoreCase("true");
          }
      }
  
      /**
       * Check if need to use DNS to locate the KDC
       */
      private boolean useDNS_KDC() {
!         return useDNS("dns_lookup_kdc");
      }
  
      /*
       * Check if need to use DNS to locate the Realm
       */
      private boolean useDNS_Realm() {
!         return useDNS("dns_lookup_realm");
      }
  
      /**
       * Gets default realm.
       * @throws KrbException where no realm can be located
--- 965,998 ----
      }
  
      /**
       * Check if need to use DNS to locate Kerberos services
       */
!     private boolean useDNS(String name, boolean defaultValue) {
!         Boolean value = getBooleanObject("libdefaults", name);
!         if (value != null) {
!             return value.booleanValue();
!         }
!         value = getBooleanObject("libdefaults", "dns_fallback");
!         if (value != null) {
!             return value.booleanValue();
          }
+         return defaultValue;
      }
  
      /**
       * Check if need to use DNS to locate the KDC
       */
      private boolean useDNS_KDC() {
!         return useDNS("dns_lookup_kdc", true);
      }
  
      /*
       * Check if need to use DNS to locate the Realm
       */
      private boolean useDNS_Realm() {
!         return useDNS("dns_lookup_realm", false);
      }
  
      /**
       * Gets default realm.
       * @throws KrbException where no realm can be located