1 /*

     2  * Copyright (c) 2011, 2013, 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 com.sun.org.apache.xalan.internal.utils;

    27 

    28 

    29 import com.sun.org.apache.xalan.internal.XalanConstants;

    30 

    31 /**

    32  * This class manages security related properties

    33  *

    34  */

    35 public final class FeatureManager extends FeaturePropertyBase {

    36 

    37     /**

    38      * States of the settings of a property, in the order: default value, value

    39      * set by FEATURE_SECURE_PROCESSING, jaxp.properties file, jaxp system

    40      * properties, and jaxp api properties

    41      */

    42     public static enum State {

    43         //this order reflects the overriding order

    44         DEFAULT, FSP, JAXPDOTPROPERTIES, SYSTEMPROPERTY, APIPROPERTY

    45     }

    46 

    47     /**

    48      * Xalan Features

    49      */

    50     public static enum Feature {

    51         ORACLE_ENABLE_EXTENSION_FUNCTION(XalanConstants.ORACLE_ENABLE_EXTENSION_FUNCTION,

    52                 "true");

    53 

    54         final String name;

    55         final String defaultValue;

    56 

    57         Feature(String name, String value) {

    58             this.name = name;

    59             this.defaultValue = value;

    60         }

    61 

    62         public boolean equalsName(String propertyName) {

    63             return (propertyName == null) ? false : name.equals(propertyName);

    64         }

    65 

    66         String defaultValue() {

    67             return defaultValue;

    68         }

    69     }

    70 

    71     /**

    72      * Default constructor. Establishes default values

    73      */

    74     public FeatureManager() {

    75         values = new String[Feature.values().length];

    76         for (Feature feature : Feature.values()) {

    77             values[feature.ordinal()] = feature.defaultValue();

    78         }

    79         //read system properties or jaxp.properties

    80         readSystemProperties();

    81     }

    82 

    83 

    84     /**

    85      * Check if the feature is enabled

    86      * @param feature name of the feature

    87      * @return true if enabled, false otherwise

    88      */

    89     public boolean isFeatureEnabled(Feature feature) {

    90         return Boolean.parseBoolean(values[feature.ordinal()]);

    91     }

    92 

    93     /**

    94      * Check if the feature is enabled

    95      * @param propertyName name of the feature

    96      * @return true if enabled, false otherwise

    97      */

    98     public boolean isFeatureEnabled(String propertyName) {

    99         return Boolean.parseBoolean(values[getIndex(propertyName)]);

   100     }

   101 

   102     /**

   103      * Get the index by property name

   104      * @param propertyName property name

   105      * @return the index of the property if found; return -1 if not

   106      */

   107     public int getIndex(String propertyName){

   108         for (Feature feature : Feature.values()) {

   109             if (feature.equalsName(propertyName)) {

   110                 return feature.ordinal();

   111             }

   112         }

   113         return -1;

   114     }

   115 

   116     /**

   117      * Read from system properties, or those in jaxp.properties

   118      */

   119     private void readSystemProperties() {

   120         getSystemProperty(Feature.ORACLE_ENABLE_EXTENSION_FUNCTION,

   121                 XalanConstants.SP_ORACLE_ENABLE_EXTENSION_FUNCTION);

   122     }

   123 

   124 }