| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /** |
| * @author Alexey V. Varlamov |
| * @version $Revision$ |
| */ |
| |
| package org.apache.harmony.security; |
| |
| import java.security.Principal; |
| |
| /** |
| * Descriptive implementation of Principal, which holds a name and a classname |
| * of unresolved principal. It is used to define an arbitrary Principal which |
| * may be not yet instantiated and authenticated. |
| * <br> |
| * This concept is somewhat similar to UnresolvedPermission. A principal-based |
| * policy may grant permissions depending on what Principals own the current |
| * execution thread. So the policy refers to this model definition of |
| * acceptable principal and compares it with the actual principal. |
| * |
| * @see org.apache.harmony.security.PolicyEntry |
| * @see org.apache.harmony.security.fortress.DefaultPolicy |
| */ |
| public final class UnresolvedPrincipal implements Principal { |
| |
| /** |
| * Wildcard value denotes any class and/or any name. |
| */ |
| public static final String WILDCARD = DefaultPolicyScanner.PrincipalEntry.WILDCARD; |
| |
| // Class name |
| private final String klass; |
| |
| // Principal name |
| private final String name; |
| |
| /** |
| * Constructs a a new definition of a Principal with specified |
| * parameters. |
| * @param klass fully qualified class name, may be wildcard |
| * @param name name of principal, may be wildcard |
| * @throws IllegalArgumentException if <code>klass</code> value |
| * is <code>null </code> or is empty string |
| */ |
| public UnresolvedPrincipal(String klass, String name) { |
| if (klass == null || klass.isEmpty()) { |
| throw new IllegalArgumentException(); |
| } |
| |
| this.klass = klass; |
| this.name = name; |
| } |
| |
| /** |
| * Returns name of a modeled Principal, or wildcard |
| * if any name is acceptable. |
| */ |
| public String getName() { |
| return name; |
| } |
| |
| /** |
| * Returns fully qualified class name of a modeled Principal, |
| * or wildcard if any class is acceptable. |
| */ |
| public String getClassName() { |
| return klass; |
| } |
| |
| /** |
| * Returns <code>true</code> if compared object is a Principal |
| * matching this definition, or if it is an UnresolvedPrincipal, |
| * which defines the same Principal; <code>false</code> otherwise. |
| */ |
| public boolean equals(Object that) { |
| if (that instanceof UnresolvedPrincipal) { |
| UnresolvedPrincipal up = (UnresolvedPrincipal) that; |
| return klass.equals(up.klass) |
| && (name == null ? up.name == null : name.equals(up.name)); |
| } |
| if (that instanceof Principal) { |
| return implies((Principal) that); |
| } |
| return false; |
| } |
| |
| /** |
| * Returns <code>true</code> if compared object is a Principal |
| * exactly matching this definition. Namely, if the fully qualified name |
| * of class of passed Principal is equal to the class name value |
| * of this definition and the name of passed Principal is equal to |
| * the name value of this definition, or if this definition allows |
| * any class or name, respectively. |
| * Otherwise returns <code>false</code> . |
| */ |
| public boolean implies(Principal another) { |
| return (another != null) |
| && (WILDCARD.equals(klass) |
| || klass.equals(another.getClass().getName()) |
| && (WILDCARD.equals(name) |
| || (name == null ? another.getName() == null |
| : name.equals(another.getName())))); |
| } |
| |
| /** |
| * Returns the hash code value for this object. |
| */ |
| public int hashCode() { |
| int hash = 0; |
| if (name != null) { |
| hash ^= name.hashCode(); |
| } |
| if (klass != null) { |
| hash ^= klass.hashCode(); |
| } |
| return hash; |
| } |
| |
| /** |
| * Returns a string describing this model of Principal. |
| * The format is 'Principal classname "name"'. |
| */ |
| public String toString() { |
| return "Principal " + klass + " \"" + name + "\""; |
| } |
| } |