Initial checkin of Security Java 5 Annotation support

(see http://opensource.atlassian.com/projects/spring/browse/SEC-4)

Note: I have created a new source dir "core-tiger" for Java 5 related core security classes,   as well as test dir.

Note: project.properties should compile this project using 1.5.

WAR test application using Spring 1.2  Transaction Annotations and Security to follow

core-tiger/src/main/java/org/acegisecurity/annotation/Secured.java

@@ -0,0 +1,54 @@
+/* Copyright 2004, 2005 Acegi Technology Pty Limited
+ *
+ * Licensed 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.
+ */
+
+package net.sf.acegisecurity.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * Java 5 annotation for describing service layer security attributes.
+ * 
+ * <p>The <code>Secured</code> annotation is used to define a list of security 
+ * configuration attributes for business methods.  This annotation can be used 
+ * as a Java 5 alternative to XML configuration.
+ * <p>For example:
+ * <pre>
+ *     &#64;Secured ({"ROLE_USER"})
+ *     public void create(Contact contact);
+ *     
+ *     &#64;Secured ({"ROLE_USER", "ROLE_ADMIN"})
+ *     public void update(Contact contact);
+ *     
+ *     &#64;Secured ({"ROLE_ADMIN"})
+ *     public void delete(Contact contact);
+ * </pre> 
+ * @author Mark St.Godard
+ * @version $Id$
+ */
+@Target({ElementType.METHOD, ElementType.TYPE})
+@Retention(RetentionPolicy.RUNTIME)
+public @interface Secured {
+    //~ Methods ================================================================
+
+    /**
+     * Returns the list of security configuration attributes. 
+     *   (i.e. ROLE_USER, ROLE_ADMIN etc.)
+     * @return String[] The secure method attributes 
+     */
+    public String[] value();
+}

core-tiger/src/main/java/org/acegisecurity/annotation/SecurityAnnotationAttributes.java

@@ -0,0 +1,132 @@
+/* Copyright 2004, 2005 Acegi Technology Pty Limited
+ *
+ * Licensed 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.
+ */
+package net.sf.acegisecurity.annotation;
+
+import java.lang.annotation.Annotation;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Set;
+
+import net.sf.acegisecurity.SecurityConfig;
+
+import org.springframework.metadata.Attributes;
+
+/**
+ * Java 5 Annotation <code>Attributes</code> metadata implementation used for 
+ * secure method interception. 
+ * 
+ * <p>This <code>Attributes</code> implementation will return security 
+ * configuration for classes described using the <code>Secured</code> Java 5
+ * annotation. 
+ * 
+ * <p>The <code>SecurityAnnotationAttributes</code> implementation can be used
+ * to configure a <code>MethodDefinitionAttributes</code> and 
+ * <code>MethodSecurityInterceptor</code> bean definition (see below).
+ * 
+ * <p>For example: 
+ * <pre>
+ * &lt;bean id="attributes" 
+ *     class="net.sf.acegisecurity.annotation.SecurityAnnotationAttributes"/>
+ * 
+ * &lt;bean id="objectDefinitionSource" 
+ *     class="net.sf.acegisecurity.intercept.method.MethodDefinitionAttributes">
+ *     &lt;property name="attributes">
+ *         &lt;ref local="attributes"/>
+ *     &lt;/property>
+ * &lt;/bean>
+ * 
+ * &lt;bean id="securityInterceptor" 
+ *     class="net.sf.acegisecurity.intercept.method.aopalliance.MethodSecurityInterceptor">
+ *      . . .
+ *      &lt;property name="objectDefinitionSource">
+ *          &lt;ref local="objectDefinitionSource"/>
+ *      &lt;/property>
+ * &lt;/bean>
+ * </pre>
+ * 
+ * <p>These security annotations are similiar to the Commons Attributes
+ * approach, however they are using Java 5 language-level metadata support.
+ *
+ * @author Mark St.Godard
+ * @version $Id$
+ *
+ * @see net.sf.acegisecurity.annotation.Secured
+ */
+public class SecurityAnnotationAttributes implements Attributes {
+
+	/**
+	 * Get the <code>Secured</code> attributes for a given target class.
+	 * @param method The target method
+	 * @return Collection of <code>SecurityConfig</code>
+	 * @see Attributes#getAttributes
+	 */
+	public Collection getAttributes(Class target) {
+
+		Set<SecurityConfig> attributes = new HashSet<SecurityConfig>();
+
+		for (Annotation annotation : target.getAnnotations()) {
+			// check for Secured annotations
+			if (annotation instanceof Secured) {
+				Secured attr = (Secured) annotation;
+				for (String auth : attr.value()) {
+					attributes.add(new SecurityConfig(auth));
+				}
+				break;
+			}
+		}
+		return attributes;
+	}
+
+	public Collection getAttributes(Class clazz, Class filter) {
+		throw new UnsupportedOperationException("Unsupported operation");
+	}
+
+	/**
+	 * Get the <code>Secured</code> attributes for a given target method.
+	 * @param method The target method
+	 * @return Collection of <code>SecurityConfig</code>
+	 * @see Attributes#getAttributes
+	 */	
+	public Collection getAttributes(Method method) {
+		Set<SecurityConfig> attributes = new HashSet<SecurityConfig>();
+
+		for (Annotation annotation : method.getAnnotations()) {
+			// check for Secured annotations
+			if (annotation instanceof Secured) {
+				Secured attr = (Secured) annotation;
+				for (String auth : attr.value()) {
+					attributes.add(new SecurityConfig(auth));
+				}
+				break;
+			}
+		}
+		return attributes;
+	}
+
+	public Collection getAttributes(Method method, Class clazz) {
+		throw new UnsupportedOperationException("Unsupported operation");
+	}
+
+	public Collection getAttributes(Field field) {
+		throw new UnsupportedOperationException("Unsupported operation");
+	}
+
+	public Collection getAttributes(Field field, Class clazz) {
+		throw new UnsupportedOperationException("Unsupported operation");
+	}
+
+}