Source Code Cross Referenced for SecurityConfig.java in  » Sevlet-Container » apache-tomcat-6.0.14 » org » apache » catalina » security » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Sevlet Container » apache tomcat 6.0.14 » org.apache.catalina.security 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Licensed to the Apache Software Foundation (ASF) under one or more
003:         * contributor license agreements.  See the NOTICE file distributed with
004:         * this work for additional information regarding copyright ownership.
005:         * The ASF licenses this file to You under the Apache License, Version 2.0
006:         * (the "License"); you may not use this file except in compliance with
007:         * the License.  You may obtain a copy of the License at
008:         * 
009:         *      http://www.apache.org/licenses/LICENSE-2.0
010:         * 
011:         * Unless required by applicable law or agreed to in writing, software
012:         * distributed under the License is distributed on an "AS IS" BASIS,
013:         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014:         * See the License for the specific language governing permissions and
015:         * limitations under the License.
016:         */
017:        package org.apache.catalina.security;
018:
019:        import java.security.Security;
020:        import org.apache.catalina.startup.CatalinaProperties;
021:
022:        /**
023:         * Util class to protect Catalina against package access and insertion.
024:         * The code are been moved from Catalina.java
025:         * @author the Catalina.java authors
026:         * @author Jean-Francois Arcand
027:         */
028:        public final class SecurityConfig {
029:            private static SecurityConfig singleton = null;
030:
031:            private static org.apache.juli.logging.Log log = org.apache.juli.logging.LogFactory
032:                    .getLog(SecurityConfig.class);
033:
034:            private final static String PACKAGE_ACCESS = "sun.,"
035:                    + "org.apache.catalina." + ",org.apache.jasper."
036:                    + ",org.apache.coyote." + ",org.apache.tomcat.";
037:
038:            private final static String PACKAGE_DEFINITION = "java.,sun."
039:                    + ",org.apache.catalina." + ",org.apache.coyote."
040:                    + ",org.apache.tomcat." + ",org.apache.jasper.";
041:            /**
042:             * List of protected package from conf/catalina.properties
043:             */
044:            private String packageDefinition;
045:
046:            /**
047:             * List of protected package from conf/catalina.properties
048:             */
049:            private String packageAccess;
050:
051:            /**
052:             * Create a single instance of this class.
053:             */
054:            private SecurityConfig() {
055:                try {
056:                    packageDefinition = CatalinaProperties
057:                            .getProperty("package.definition");
058:                    packageAccess = CatalinaProperties
059:                            .getProperty("package.access");
060:                } catch (java.lang.Exception ex) {
061:                    if (log.isDebugEnabled()) {
062:                        log
063:                                .debug(
064:                                        "Unable to load properties using CatalinaProperties",
065:                                        ex);
066:                    }
067:                }
068:            }
069:
070:            /**
071:             * Returns the singleton instance of that class.
072:             * @return an instance of that class.
073:             */
074:            public static SecurityConfig newInstance() {
075:                if (singleton == null) {
076:                    singleton = new SecurityConfig();
077:                }
078:                return singleton;
079:            }
080:
081:            /**
082:             * Set the security package.access value.
083:             */
084:            public void setPackageAccess() {
085:                // If catalina.properties is missing, protect all by default.
086:                if (packageAccess == null) {
087:                    setSecurityProperty("package.access", PACKAGE_ACCESS);
088:                } else {
089:                    setSecurityProperty("package.access", packageAccess);
090:                }
091:            }
092:
093:            /**
094:             * Set the security package.definition value.
095:             */
096:            public void setPackageDefinition() {
097:                // If catalina.properties is missing, protect all by default.
098:                if (packageDefinition == null) {
099:                    setSecurityProperty("package.definition",
100:                            PACKAGE_DEFINITION);
101:                } else {
102:                    setSecurityProperty("package.definition", packageDefinition);
103:                }
104:            }
105:
106:            /**
107:             * Set the proper security property
108:             * @param properties the package.* property.
109:             */
110:            private final void setSecurityProperty(String properties,
111:                    String packageList) {
112:                if (System.getSecurityManager() != null) {
113:                    String definition = Security.getProperty(properties);
114:                    if (definition != null && definition.length() > 0) {
115:                        definition += ",";
116:                    }
117:
118:                    Security.setProperty(properties,
119:                    // FIX ME package "javax." was removed to prevent HotSpot
120:                            // fatal internal errors
121:                            definition + packageList);
122:                }
123:            }
124:
125:        }
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