Package com.sun.enterprise.deployment.annotation.handlers

Source Code of com.sun.enterprise.deployment.annotation.handlers.RolesAllowedHandler

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package com.sun.enterprise.deployment.annotation.handlers;

import java.lang.annotation.Annotation;
import java.lang.annotation.ElementType;
import java.lang.reflect.AnnotatedElement;
import java.lang.reflect.Method;
import java.util.logging.Level;

import javax.annotation.security.DenyAll;
import javax.annotation.security.PermitAll;
import javax.annotation.security.RolesAllowed;

import com.sun.enterprise.deployment.EjbDescriptor;
import com.sun.enterprise.deployment.MethodDescriptor;
import com.sun.enterprise.deployment.MethodPermission;
import com.sun.enterprise.deployment.Role;
import com.sun.enterprise.deployment.annotation.AnnotatedElementHandler;
import com.sun.enterprise.deployment.annotation.AnnotationInfo;
import com.sun.enterprise.deployment.annotation.AnnotationProcessorException;
import com.sun.enterprise.deployment.annotation.HandlerProcessingResult;
import com.sun.enterprise.deployment.annotation.context.EjbContext;
import com.sun.enterprise.util.TypeUtil;

/**
* This handler is responsible for handling the
* javax.annotation.security.RolesAllowed.
*
* @author Shing Wai Chan
*/
public class RolesAllowedHandler extends AbstractAttributeHandler implements PostProcessor {
   
    public RolesAllowedHandler() {
    }
   
    /**
     * @return the annoation type this annotation handler is handling
     */
    public Class<? extends Annotation> getAnnotationType() {
        return RolesAllowed.class;
    }   
       
    protected HandlerProcessingResult processAnnotation(AnnotationInfo ainfo,
            EjbContext[] ejbContexts) throws AnnotationProcessorException {

        AnnotatedElement ae = (AnnotatedElement)ainfo.getAnnotatedElement();

        if (ae.isAnnotationPresent(DenyAll.class) ||
                ae.isAnnotationPresent(PermitAll.class)) {
            log(Level.SEVERE, ainfo,
                localStrings.getLocalString(
                "enterprise.deployment.annotation.handlers.inconsistentsecannotation",
                "This annotation is not consistent with other annotations.  One cannot have more than one of @RolesAllowed, @PermitAll, @DenyAll in the same AnnotatedElement."));
            return getDefaultFailedResult();
        }
       
        RolesAllowed rolesAllowedAn = (RolesAllowed)ainfo.getAnnotation();

        for (EjbContext ejbContext : ejbContexts) {
            EjbDescriptor ejbDesc = ejbContext.getDescriptor();
            if (ElementType.TYPE.equals(ainfo.getElementType())) {
                // postpone the processing at the end
                ejbContext.addPostProcessInfo(ainfo, this);
            } else {
                Method annMethod = (Method) ainfo.getAnnotatedElement();
               
                for (Object next : ejbDesc.getSecurityBusinessMethodDescriptors()) {
                    MethodDescriptor md = (MethodDescriptor)next;
                    Method m = md.getMethod(ejbDesc);
                    if (TypeUtil.sameMethodSignature(m, annMethod)) {
                        // override by xml
                        if (!hasMethodPermissionsFromDD(md, ejbDesc)) {
                            addMethodPermissions(rolesAllowedAn, ejbDesc, md);
                        }
                    }
                }
            }
        }

        return getDefaultProcessedResult();
    }  

    /**
     * @return an array of annotation types this annotation handler would
     * require to be processed (if present) before it processes it's own
     * annotation type.
     */
    public Class<? extends Annotation>[] getTypeDependencies() {
        return getEjbAnnotationTypes();
    }

    protected boolean supportTypeInheritance() {
        return true;
    }

    public void postProcessAnnotation(AnnotationInfo ainfo,
            AnnotatedElementHandler aeHandler)
            throws AnnotationProcessorException {
        EjbContext ejbContext = (EjbContext)aeHandler;
        EjbDescriptor ejbDesc = ejbContext.getDescriptor();
        RolesAllowed rolesAllowedAn = (RolesAllowed)ainfo.getAnnotation();
        if (!ejbContext.isInherited() &&
                (ejbDesc.getMethodPermissionsFromDD() == null ||
                ejbDesc.getMethodPermissionsFromDD().size() == 0)) {
            for (MethodDescriptor md : getMethodAllDescriptors(ejbDesc)) {
                addMethodPermissions(rolesAllowedAn, ejbDesc, md);
            }
        } else {
            Class classAn = (Class)ainfo.getAnnotatedElement();
            for (Object next : ejbDesc.getSecurityBusinessMethodDescriptors()) {
                MethodDescriptor md = (MethodDescriptor)next;
                Method m = md.getMethod(ejbDesc);
                // override by existing info
                if (classAn.equals(ejbContext.getDeclaringClass(md)) &&
                        !hasMethodPermissionsFromDD(md, ejbDesc)) {
                    addMethodPermissions(rolesAllowedAn, ejbDesc, md);
                }
            }
        }
    }

    /**
     * Add roles and permissions to given method in EjbDescriptor.
     * @param rolesAllowedAn
     * @param ejbDesc
     * @param md
     */
    private void addMethodPermissions(RolesAllowed rolesAllowedAn,
            EjbDescriptor ejbDesc, MethodDescriptor md) {
        for (String roleName : rolesAllowedAn.value()) {
            Role role = new Role(roleName);
            // add role if not exists
            ejbDesc.getEjbBundleDescriptor().addRole(role);
            ejbDesc.addPermissionedMethod(new MethodPermission(role), md);
        }
    }

}
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