Examples of java.security.Permission

java.security.Permission
Abstract class for representing access to a system resource. All permissions have a name (whose interpretation depends on the subclass), as well as abstract functions for defining the semantics of the particular Permission subclass.
Most Permission objects also include an "actions" list that tells the actions that are permitted for the object. For example, for a java.io.FilePermission object, the permission name is the pathname of a file (or directory), and the actions list (such as "read, write") specifies which actions are granted for the specified file (or for files in the specified directory). The actions list is optional for Permission objects, such as java.lang.RuntimePermission, that don't need such a list; you either have the named permission (such as "system.exit") or you don't.
An important method that must be implemented by each subclass is the implies method to compare Permissions. Basically, "permission p1 implies permission p2" means that if one is granted permission p1, one is naturally granted permission p2. Thus, this is not an equality test, but rather more of a subset test.
Permission objects are similar to String objects in that they are immutable once they have been created. Subclasses should not provide methods that can change the state of a permission once it has been created. @see Permissions @see PermissionCollection @version 1.40 05/11/17 @author Marianne Mueller @author Roland Schemers

    }


    public void testImpliesStringString() {


        // The argument is an instanceof WebResourcePermission 
        Permission pA = new WebResourcePermission("/foo", "");
        Permission pB = new WebUserDataPermission("/foo", "");
        
        assertFalse(pA.implies(pB));
        assertFalse(pB.implies(pA));
    
        pA = new WebResourcePermission("/foo", "");
        pB = new WebResourcePermission("/foo", "GET,POST");
        
        assertTrue(pA.implies(pB));
        assertFalse(pB.implies(pA));
        
        pA = new WebResourcePermission("/foo/*:/foo/bar", "");
        pB = new WebResourcePermission("/foo/bar", "");
        
        assertFalse(pA.implies(pB));
        assertFalse(pB.implies(pA));


        pA = new WebResourcePermission("/foo/bar/*:/foo/bar/cat/dog", "");
        pB = new WebResourcePermission("/foo/bar/*:/foo/bar/cat/*", "");


        assertTrue(pA.implies(pB));
        assertFalse(pB.implies(pA));


        pA = new WebResourcePermission("/:/a.jsp:/b.jsp:/c.jsp", "GET,POST,PUT,DELETE,HEAD,OPTIONS,TRACE");
        pB = new WebResourcePermission("/:/a.jsp:/c.jsp:/b.jsp", (String) null);


        assertTrue(pA.implies(pB));
        assertTrue(pB.implies(pA));
    }

View Full Code Here

        if ((pc = loaderPC.get(codeUrl)) == null) {
            pc = super.getPermissions(codeSource);
            if (pc != null) {
                Iterator<Permission> perms = permissionList.iterator();
                while (perms.hasNext()) {
                    Permission p = perms.next();
                    pc.add(p);
                }
                loaderPC.put(codeUrl,pc);
            }
        }

View Full Code Here

            return;
        }


        // the check
        try {
            final Permission sp  = new SystemPermission(
                  SystemPermission.SERVER, SystemPermission.SHUTDOWN);
            // For porting the network server to J2ME/CDC, consider calling
            // abstract method InternalDriver.checkShutdownPrivileges(user)
            // instead of static SecurityUtil.checkUserHasPermission().
            // SecurityUtil.checkUserHasPermission(userArg, sp);

View Full Code Here

                securityHolder.setExcluded(componentPermissions.getExcludedPermissions());
                PermissionCollection checkedPermissions = new Permissions();
                for (Iterator iterator = rolePermissions.values().iterator(); iterator.hasNext();) {
                    PermissionCollection permissionsForRole = (PermissionCollection) iterator.next();
                    for (Enumeration iterator2 = permissionsForRole.elements(); iterator2.hasMoreElements();) {
                        Permission permission = (Permission) iterator2.nextElement();
                        checkedPermissions.add(permission);
                    }
                }
                securityHolder.setChecked(checkedPermissions);
                earContext.addSecurityContext(policyContextID, componentPermissions);

View Full Code Here

    public void checkPermission(final String coordinationName, final String actions )
    {
        final SecurityManager securityManager = System.getSecurityManager();
        if (securityManager != null)
        {
            final Permission permission = new CoordinationPermission(coordinationName, this.owner, actions);
            securityManager.checkPermission(permission);
        }
    }

View Full Code Here

                            {
                                name += postfix;
                            }
                        }
                    }
                    Permission source = createPermission(new PermissionInfo(
                        FilePermission.class.getName(), name,
                        m_permissionInfos[i].getActions()), targetClass);
                    if (source.implies(target))
                    {
                        return true;
                    }
                }
            }
            return false;
        }


        Object current = m_stack.get();


        if (current == null)
        {
            m_stack.set(targetClass);
        }
        else
        {
            if (current instanceof HashSet)
            {
                if (((HashSet) current).contains(targetClass))
                {
                    return false;
                }
                ((HashSet) current).add(targetClass);
            }
            else
            {
                if (current == targetClass)
                {
                    return false;
                }
                HashSet frame = new HashSet();
                frame.add(current);
                frame.add(targetClass);
                m_stack.set(frame);
                current = frame;
            }
        }


        try
        {
            SoftReference collectionEntry = null;


            PermissionCollection collection = null;


            synchronized (m_cache)
            {
                collectionEntry = (SoftReference) m_cache.get(targetClass);
            }


            if (collectionEntry != null)
            {
                collection = (PermissionCollection) collectionEntry.get();
            }


            if (collection == null)
            {
                collection = target.newPermissionCollection();


                if (collection == null)
                {
                    collection = new DefaultPermissionCollection();
                }


                for (int i = 0; i < m_permissionInfos.length; i++)
                {
                    PermissionInfo permissionInfo = m_permissionInfos[i];
                    String infoType = permissionInfo.getType();
                    String permissionType = targetClass.getName();


                    if (infoType.equals(permissionType))
                    {
                        Permission permission = createPermission(
                            permissionInfo, targetClass);


                        if (permission != null)
                        {
                            collection.add(permission);

View Full Code Here

                if (inner != null)
                {
                    Entry entry = (Entry) inner.get(target);
                    if (entry != null)
                    {
                        Permission result = (Permission) entry.get();
                        if (result != null)
                        {
                            return result;
                        }
                        inner.remove(entry);

View Full Code Here

        return (Permission) AccessController
            .doPrivileged(new PrivilegedAction()
            {
                public Object run()
                {
                    Permission cached = getFromCache(permissionInfo
                        .getEncoded(), target);


                    if (cached != null)
                    {
                        return cached;
                    }


                    try
                    {
                        if (m_classLoader.loadClass(target.getName()) == target)
                        {
                            return addToCache(permissionInfo.getEncoded(),
                                createPermission(permissionInfo.getName(),
                                    permissionInfo.getActions(), target));
                        }
                    }
                    catch (ClassNotFoundException e1)
                    {
                    }


                    ServiceReference[] refs = null;
                    try
                    {
                        refs = m_context.getServiceReferences(
                            PackageAdmin.class.getName(), null);
                    }
                    catch (InvalidSyntaxException e)
                    {
                    }
                    if (refs != null)
                    {
                        for (int i = 0; i < refs.length; i++)
                        {
                            PackageAdmin admin = (PackageAdmin) m_context
                                .getService(refs[i]);


                            if (admin != null)
                            {
                                Permission result = null;
                                Bundle bundle = admin.getBundle(target);
                                if (bundle != null)
                                {
                                    ExportedPackage[] exports = admin
                                        .getExportedPackages(bundle);

View Full Code Here

            synchronized (m_perms)
            {
                perms = m_perms;
            }


            Permission permission = (Permission) perms.get(perm);


            if ((permission != null) && permission.implies(perm))
            {
                return true;
            }


            for (Iterator iter = perms.values().iterator(); iter.hasNext();)
            {
                Permission current = (Permission) iter.next();
                if ((current != null) && (current != permission)
                    && current.implies(perm))
                {
                    return true;
                }
            }
            return false;

View Full Code Here

     */
    public boolean hasGetPermission()
    {
        if ( System.getSecurityManager() != null )
        {
            Permission perm = new ServicePermission( getServiceName(), ServicePermission.GET );
            return m_componentManager.getBundle().hasPermission( perm );
        }


        // no security manager, hence permission given
        return true;

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of java.security.Permission

anvil.core.runtime.AnyPermission

anvil.server.db.DBEntity

anvil.server.PolicyPreferences

com.com.com.PolicyFile

com.ecyrd.jspwiki.attachment.AttachmentServlet

com.ecyrd.jspwiki.auth.acl.AclImpl

com.ecyrd.jspwiki.auth.AuthorizationManagerTest

com.google.gwt.thirdparty.org.apache.catalina.loader.WebappClassLoader

com.hazelcast.client.ClientEngineImpl$ClientPacketProcessor

com.hazelcast.security.permission.ActionConstantsTest

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.