com.sapportals.wcm.repository.security
Interface IResourceAclManager

[contained in: com.sap.netweaver.bc.rf.par - bc.rf.framework_api.jar]

All Known Subinterfaces:

IResourceAclManagerRaw

public interface IResourceAclManager

An IResourceAclManager administers and persists Access Control Lists (ACL)
- IResourceAclManagers are used by IAclSecurityManagers
- IResourceAclManagers use IAclManagers (one to one)
- IResourceAclManagers operate on IResources
- IAclManagers operate on arbitrary objects which are identified by an unique ID
- IResourceAclManagers pass the RID of the IResources as object ID to the IAclManagers
- IResourceAclManagers pass the logged in user (from the resource context) as the 'caller' to IAclManagers
- IResourceAclManagers use the wrappers IResourceAcl (for IAcl), IResourceAclEntry (for IAclEntry) in order to hide the calls of the IAclManager (so that nobody can pass a fake 'caller')

Abbreviations
ACL: Access Control List
ACE: Access Control List Entry

Copyright (c) SAP AG 2001-2004

Method Summary

boolean	addSupportedPermission(IObjectType objectType, IAclPermission permission) assign a permission to an object type
boolean[]	areAclsUpToDate(IResourceAcl[] acls) check whether the ACLs are up to date (compared to the database)
boolean	areNegativeAclEntriesSupported() check whether negative ACEs are supported
boolean	assignForeignAcl(IResourceAcl foreignAcl, IResource resource) assign an ACL from a foreign IResourceAclManager to a local resource - foreign ACEs which hold permissions that are not supported by the local IResourceAclManager are ignored - locally inherited ACEs are added - the owners are maintained - if the resource inherits an ACL the user must be an owner - fails, if the resource already has an ACL assigned
IResourceAcl	createAcl(IResource resource) create a new ACL for a resource - initial owner is the user in the resource context - inherited ACEs are added - if the resource inherits an ACL the user must be an owner - fails, if the resource already has an ACL assigned
IResourceAclEntry	createAclEntry(com.sapportals.portal.security.usermanagement.IUMPrincipal principal, boolean negative, IAclPermission permission, int sortIndex) create a new ACE for an ACL to grant or deny a permission to a principal
IAclPermission	createPermission(java.lang.String name) create a new permission (the permission can not be used until it is assigned to an object type by calling the addSupportedPermission() method)
IResourceAcl	getAcl(IResource resource) get the ACL of a specific resource
long	getDBVersion() Returns a value representing the state (timestamp or modifycounter) of all persisted acl entries.
IResourceAcl	getInheritedAcl(IResource resource) get the ACL that a resource inherits by its ancestors
IObjectType	getObjectType(IResource resource) get the object type of a resource
IAclPermission	getPermission(java.lang.String name) get the IAclPermission object of the (supported) permission with a given name
IObjectTypeList	getSupportedObjectTypes() get a list of object types which are supported by the IResourceAclManager for resources
IAclPermissionList	getSupportedPermissions(IResource resource) get a list of permissions which are supported by the IResourceAclManager for a specific resource
boolean	isPermissionUsedInAcl(IAclPermission permission) check whether a permission is used in an ACL
boolean	isReadOnly() check whether the IResourceAclManager is read only (no creation or modification of ACLs is allowed)
IResourceList	propagateAcl_Remove(IResource resource) remove the ACLs of the descendants of the resource
boolean	removeAcl(IResource resource) remove the ACL of a specific resource
boolean	removeAcl(IResourceAcl acl) remove an ACL
boolean	removePermission(IAclPermission permission) remove a permission - a permission can only be removed if it is not predefined and not used in an ACL
boolean	removeSupportedPermission(IObjectType objectType, IAclPermission permission) remove the assignment of a permission to an object type - a supported permission can only be removed if it is not predefined and not used in an ACL

Method Detail

createAclEntry

public IResourceAclEntry createAclEntry(com.sapportals.portal.security.usermanagement.IUMPrincipal principal,
                                        boolean negative,
                                        IAclPermission permission,
                                        int sortIndex)
                                 throws AclPersistenceException,
                                        java.lang.UnsupportedOperationException,
                                        InvalidClassException

create a new ACE for an ACL to grant or deny a permission to a principal

Parameters:

principal - the principal

negative - true if the entry denies a permission, false if it grants (denials are currently unsupported)

permission - the permission

sortIndex - the position of the ACE in an ACL (important only with denials)

Returns:

the newly created ACE

Throws:

AclPersistenceException - a problem with the storage where the ACLs are persisted occurred

InvalidClassException - the permission was created by a foreign IResourceAclManager

java.lang.UnsupportedOperationException - negative ACEs are currently not supported (request support by using the areNegativeAclEntriesSupported() method)

areNegativeAclEntriesSupported

public boolean areNegativeAclEntriesSupported()

check whether negative ACEs are supported

Returns:

true iff negative ACEs are supported

createAcl

public IResourceAcl createAcl(IResource resource)
                       throws AclPersistenceException,
                              NotAuthorizedException,
                              AclExistsException,
                              ResourceException

create a new ACL for a resource - initial owner is the user in the resource context - inherited ACEs are added - if the resource inherits an ACL the user must be an owner - fails, if the resource already has an ACL assigned

Parameters:

resource - the resource

Returns:

the newly created ACL

Throws:

AclPersistenceException - a problem with the storage where the ACLs are persisted occurred

NotAuthorizedException - the user in the resource context is not an owner of an inherited ACL

AclExistsException - an ACL already exists for the resource

ResourceException - the resource URI could not be determined

assignForeignAcl

public boolean assignForeignAcl(IResourceAcl foreignAcl,
                                IResource resource)
                         throws AclPersistenceException,
                                NotAuthorizedException,
                                AclExistsException,
                                ResourceException

assign an ACL from a foreign IResourceAclManager to a local resource - foreign ACEs which hold permissions that are not supported by the local IResourceAclManager are ignored - locally inherited ACEs are added - the owners are maintained - if the resource inherits an ACL the user must be an owner - fails, if the resource already has an ACL assigned

Parameters:

foreignAcl - the foreign ACL

resource - the local resource

Returns:

true iff the ACL has been assigned

Throws:

AclPersistenceException - a problem with the storage where the ACLs are persisted occurred

NotAuthorizedException - the user in the resource context is not an owner of an inherited ACL

AclExistsException - an ACL already exists for the resource

ResourceException - the resource URI could not be determined

getAcl

public IResourceAcl getAcl(IResource resource)
                    throws AclPersistenceException,
                           ResourceException

get the ACL of a specific resource

Parameters:

resource - the resource

Returns:

the ACL of the resource or null in case none is assigned yet

Throws:

AclPersistenceException - a problem with the storage where the ACLs are persisted occurred

ResourceException - the resource URI could not be determined

getInheritedAcl

public IResourceAcl getInheritedAcl(IResource resource)
                             throws AclPersistenceException,
                                    ResourceException

get the ACL that a resource inherits by its ancestors

Parameters:

resource - the resource

Returns:

the inherited ACL

Throws:

AclPersistenceException - a problem with the storage where the ACLs are persisted occurred

ResourceException - the resource URI could not be determined

removeAcl

public boolean removeAcl(IResource resource)
                  throws AclPersistenceException,
                         NotAuthorizedException,
                         ResourceException,
                         ResourceException

remove the ACL of a specific resource

Parameters:

resource - the resource

Returns:

true iff an ACL did exist and was removed

Throws:

AclPersistenceException - a problem with the storage where the ACLs are persisted occurred

NotAuthorizedException - the user in the resource context is not an owner of the ACL

ResourceException - the resource URI could not be determined

removeAcl

public boolean removeAcl(IResourceAcl acl)
                  throws AclPersistenceException,
                         NotAuthorizedException,
                         InvalidClassException,
                         ResourceException

remove an ACL

Parameters:

acl - the ACL

Returns:

true iff the ACL was removed

Throws:

AclPersistenceException - a problem with the storage where the ACLs are persisted occurred

NotAuthorizedException - the caller is not an owner of the access control list

InvalidClassException - the acl was created by a foreign resource acl manager

ResourceException - Exception raised in failure situation

getSupportedObjectTypes

public IObjectTypeList getSupportedObjectTypes()
                                        throws AclPersistenceException

get a list of object types which are supported by the IResourceAclManager for resources

Returns:

the object types

Throws:

AclPersistenceException - a problem with the storage where the ACLs are persisted occurred

getObjectType

public IObjectType getObjectType(IResource resource)
                          throws AclPersistenceException,
                                 ResourceException

get the object type of a resource

Parameters:

resource - the resource

Returns:

the object type

Throws:

AclPersistenceException - a problem with the storage where the ACLs are persisted occurred

ResourceException - the resource URI could not be determined

getSupportedPermissions

public IAclPermissionList getSupportedPermissions(IResource resource)
                                           throws AclPersistenceException,
                                                  ResourceException

get a list of permissions which are supported by the IResourceAclManager for a specific resource

Parameters:

resource - the resource

Returns:

the permissions

Throws:

AclPersistenceException - a problem with the storage where the ACLs are persisted occurred

ResourceException - the resource URI could not be determined

getPermission

public IAclPermission getPermission(java.lang.String name)
                             throws AclPersistenceException

get the IAclPermission object of the (supported) permission with a given name

Parameters:

name - the name of the permission

Returns:

the permission

Throws:

AclPersistenceException - a problem with the storage where the ACLs are persisted occurred

addSupportedPermission

public boolean addSupportedPermission(IObjectType objectType,
                                      IAclPermission permission)
                               throws AclPersistenceException,
                                      PredefinedPermissionException

assign a permission to an object type

Parameters:

objectType - the object type

permission - the permission

Returns:

true iff the permission was assigned successfully

Throws:

AclPersistenceException - a problem with the storage where the ACLs are persisted occurred

PredefinedPermissionException - the permission is predefined and thus not allowed to be changed

removeSupportedPermission

public boolean removeSupportedPermission(IObjectType objectType,
                                         IAclPermission permission)
                                  throws AclPersistenceException,
                                         PredefinedPermissionException,
                                         PermissionUsedException

remove the assignment of a permission to an object type - a supported permission can only be removed if it is not predefined and not used in an ACL

Parameters:

objectType - the object type

permission - the permission

Returns:

true iff the assignment was removed successfully

Throws:

AclPersistenceException - a problem with the storage where the ACLs are persisted occurred

PredefinedPermissionException - the permission is predefined and thus not allowed to be changed

PermissionUsedException - Exception raised in failure situation

createPermission

public IAclPermission createPermission(java.lang.String name)
                                throws AclPersistenceException,
                                       PermissionExistsException

create a new permission (the permission can not be used until it is assigned to an object type by calling the addSupportedPermission() method)

Parameters:

name - the permission name

Returns:

the newly created permission

Throws:

AclPersistenceException - a problem with the storage where the ACLs are persisted occurred

PermissionExistsException - a permission with that name exists already

removePermission

public boolean removePermission(IAclPermission permission)
                         throws AclPersistenceException,
                                PredefinedPermissionException,
                                PermissionUsedException

remove a permission - a permission can only be removed if it is not predefined and not used in an ACL

Parameters:

permission - the permission

Returns:

true iff the permission was removed successfully

Throws:

AclPersistenceException - a problem with the storage where the ACLs are persisted occurred

PredefinedPermissionException - the permission is predefined and thus not allowed to be changed

PermissionUsedException - the permission is used in some acl and thus not allowed to be changed

isPermissionUsedInAcl

public boolean isPermissionUsedInAcl(IAclPermission permission)
                              throws AclPersistenceException

check whether a permission is used in an ACL

Parameters:

permission - the permission

Returns:

true iff the permission is used in an ACL

Throws:

AclPersistenceException - a problem with the storage where the ACLs are persisted occurred

isReadOnly

public boolean isReadOnly()
                   throws AclPersistenceException

check whether the IResourceAclManager is read only (no creation or modification of ACLs is allowed)

Returns:

true iff the IResourceAclManager is read only

Throws:

AclPersistenceException - a problem with the storage where the ACLs are persisted occurred

areAclsUpToDate

public boolean[] areAclsUpToDate(IResourceAcl[] acls)
                          throws AclPersistenceException

check whether the ACLs are up to date (compared to the database)

Parameters:

acls - the ACLs to check

Returns:

a boolean array containing true for the ACLs which are up to date

Throws:

AclPersistenceException - Exception raised in failure situation

propagateAcl_Remove

public IResourceList propagateAcl_Remove(IResource resource)
                                  throws AclPersistenceException,
                                         ResourceException,
                                         NoAclException,
                                         InvalidClassException,
                                         NotAuthorizedException

remove the ACLs of the descendants of the resource

Returns:

null if all acls could be removed successfully otherwise a list of all Resources which failed operation

Throws:

AclPersistenceException - Exception raised in failure situation

ResourceException - Exception raised in failure situation

NoAclException - Exception raised in failure situation

InvalidClassException - Exception raised in failure situation

NotAuthorizedException - Exception raised in failure situation

getDBVersion

public long getDBVersion()

Returns a value representing the state (timestamp or modifycounter) of all persisted acl entries. If a negative number is returned this method is not supported or an error occured.

Returns:

dBVersion