com.sap.netweaver.bc.rf.mi.security.acl
Interface IAclSecurityManager

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

All Superinterfaces:

ISecurityManager

public interface IAclSecurityManager

extends ISecurityManager

Interface describing an access control list security sub manager, short ACL security sub manager. Each resource may have an ACL with many ACL entries. An entry describes for one principal (may be a user, group or whatever is considered an entity) a permission this principal has on the given resource. The ACL itself is just an envelope for many ACL entries.

An ACL entry may define a permission this principal has on the given resource, but it may also define a permission a principal is denied to have (so called negative ACL entry).

ACLs are propagated down from above the resource hierarchy on the fly, i.e. they are not really set on the descendants but derived when accessed. All descendants not having an own ACL inherit one from their next legator having one. Legators are ancestors responsible for the security permissions of their descendants.

ACLs and ACL entries are factored by this security sub manager and thereby assigned to a resource handle (exactly one ACL per resource handle and null to more ACL entries per ACL).

Each resource handle has to be of a certain object type known by the ACL security sub manager and each object type has special supported permissions. Only supported permissions for a given resource handle can be set, others not. This helps identifying, e.g. in GUI, which permissions are allowed to be set and worked on.

Method Summary

void	addSupportedPermission(IObjectType objectType, IAclPermission permission) Register permission as supported permission for an object type.
void	assignAcl(IResourceHandle resourceHandle, IAcl acl) Assign an existent ACL, i.e. copy and assign it to a resource handle when the resource handle has no ACL and the current user in the resource context is an owner of the source ACL.
IAcl	createAcl(IResourceHandle resourceHandle) Create a new ACL for a resource handle when the resource handle has no ACL and the current user in the resource context is an owner of the inherited ACL.
IAclEntry	createAclEntry(com.sap.netweaver.bc.rf.mi.security.acl.IPrincipal principal, IAclPermission permission, boolean negative, boolean readonly, int sortIndex) Create a new ACL entry to grant or deny a permission to a principal.
IAclPermission	createPermission(java.lang.String name) Register permission with the given name generally for this ACL security sub manager.
IAcl	getAcl(IResourceHandle resourceHandle) Get ACL of a given resource handle.
IAcl	getInheritedAcl(IResourceHandle resourceHandle) Get ACL of a given resource handle or an inherited ACL if none is defined directly for the given resource handle.
IObjectType	getObjectType(IResourceHandle resourceHandle) Get object type this ACL security sub manager interprets the given resource handle.
IAclPermission	getPermission(java.lang.String name) Identify and get permission with the given name generally known to this ACL security sub manager.
java.util.List	getSupportedObjectTypes() Get list of object types supported by this ACL security sub manager.
java.util.List	getSupportedPermissions(IResourceHandle resourceHandle) Get list of permissions which are supported by this ACL security sub manager for the given resource handle, i.e. outcome depends on the object type of the given resource handle, e.g. depends whether the resource is a collection or not.
boolean	isPermissionUsedInAcl(IAclPermission permission) Check whether or not a permission is used in an ACL.
boolean	isReadOnly() Check whether or not this ACL security sub manager is read only and no creation or modification operations of ACLs are allowed.
void	removeAcl(IAcl acl) Remove the given ACL from its resource.
void	removeAcl(IResourceHandle resourceHandle) Remove the ACL from the given resource.
void	removePermission(IAclPermission permission) Unregister permission with the given name generally from this ACL security sub manager.
void	removeSupportedPermission(IObjectType objectType, IAclPermission permission) Unregister permission as no longer supported permission from an object type.
boolean	supportsNegativeAclEntries() Check whether or not negative ACL entries are supported by this ACL security sub manager.

Methods inherited from interface com.sap.netweaver.bc.rf.mi.security.ISecurityManager

isAllowed, isAllowed, isAllowed, isAllowed

Method Detail

getAcl

public IAcl getAcl(IResourceHandle resourceHandle)
            throws AclPersistenceException,
                   ResourceException

Get ACL of a given resource handle. Inherited ACLs are not returned. Please call getInheritedAcl() for that purpose.

Parameters:

resourceHandle - resource handle

Returns:

ACL of a given resource handle

Throws:

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

ResourceException - when the resource handle was invalid

getInheritedAcl

public IAcl getInheritedAcl(IResourceHandle resourceHandle)
                     throws AclPersistenceException,
                            ResourceException

Get ACL of a given resource handle or an inherited ACL if none is defined directly for the given resource handle. A call to this method may involve calling all legators until an ACL is found.

Parameters:

resourceHandle - resource handle

Returns:

the inherited ACL

Throws:

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

ResourceException - when the resource handle was invalid

createAclEntry

public IAclEntry createAclEntry(com.sap.netweaver.bc.rf.mi.security.acl.IPrincipal principal,
                                IAclPermission permission,
                                boolean negative,
                                boolean readonly,
                                int sortIndex)
                         throws AclPersistenceException,
                                java.lang.UnsupportedOperationException

Create a new ACL entry to grant or deny a permission to a principal. The ACL entry must be assigned to an ACL in order to be activated.

Parameters:

principal - principal

permission - permission

negative - true if the entry denies a permission, false if it grants one

readonly - true if the entry is read only, false otherwise

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

Returns:

ACL entry

Throws:

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

java.lang.UnsupportedOperationException - when a negative ACL entry is requested but not supported

createAcl

public IAcl createAcl(IResourceHandle resourceHandle)
               throws AclPersistenceException,
                      AclNotAuthorizedException,
                      AclExistsException,
                      ResourceException

Create a new ACL for a resource handle when the resource handle has no ACL and the current user in the resource context is an owner of the inherited ACL. This user will become the initial owner of the newly created ACL. All ACL entries from the inherited ACL will be copied when applicable to the object type of the given resource handle; all others will be ignored.

Parameters:

resourceHandle - resource handle

Returns:

ACL

Throws:

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

AclExistsException - when an ACL already exists for the resource handle

ResourceException - when the resource handle was invalid

AclNotAuthorizedException - Exception raised in failure situation

assignAcl

public void assignAcl(IResourceHandle resourceHandle,
                      IAcl acl)
               throws AclPersistenceException,
                      AclNotAuthorizedException,
                      AclExistsException,
                      ResourceException

Assign an existent ACL, i.e. copy and assign it to a resource handle when the resource handle has no ACL and the current user in the resource context is an owner of the source ACL. All users of the source ACL will become the initial owners of the newly copied and assigned ACL. All ACL entries from the source ACL will be copied when applicable to the object type and ACL security sub manager implementation of the given resource handle; all others will be ignored.

Parameters:

resourceHandle - resource handle

acl - ACL

Throws:

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

AclExistsException - when an ACL already exists for the resource handle

ResourceException - when the resource handle was invalid

AclNotAuthorizedException - Exception raised in failure situation

removeAcl

public void removeAcl(IResourceHandle resourceHandle)
               throws AclPersistenceException,
                      AclNotAuthorizedException,
                      ResourceException

Remove the ACL from the given resource.

Parameters:

resourceHandle - resource handle

Throws:

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

ResourceException - when the resource handle was invalid

AclNotAuthorizedException - Exception raised in failure situation

removeAcl

public void removeAcl(IAcl acl)
               throws AclPersistenceException,
                      AclNotAuthorizedException,
                      ResourceException

Remove the given ACL from its resource.

Parameters:

acl - ACL

Throws:

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

ResourceException - when the resource handle assigned to the ACL was invalid

AclNotAuthorizedException - Exception raised in failure situation

getPermission

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

Identify and get permission with the given name generally known to this ACL security sub manager.

Parameters:

name - permission name

Returns:

permission with the given name

Throws:

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

createPermission

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

Register permission with the given name generally for this ACL security sub manager.

Parameters:

name - permission name

Returns:

newly created permission with the given name

Throws:

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

AclPermissionExistsException - Exception raised in failure situation

removePermission

public void removePermission(IAclPermission permission)
                      throws AclPersistenceException,
                             AclPredefinedPermissionException,
                             AclPermissionUsedException

Unregister permission with the given name generally from this ACL security sub manager. It can only be unregistered if it is not predefined and not used in an ACL.

Parameters:

permission - the permission

Throws:

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

AclPredefinedPermissionException - Exception raised in failure situation

AclPermissionUsedException - Exception raised in failure situation

getSupportedObjectTypes

public java.util.List getSupportedObjectTypes()
                                       throws AclPersistenceException

Get list of object types supported by this ACL security sub manager.

Returns:

list of the IObjectTypes

Throws:

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

getObjectType

public IObjectType getObjectType(IResourceHandle resourceHandle)
                          throws AclPersistenceException,
                                 ResourceException

Get object type this ACL security sub manager interprets the given resource handle.

Parameters:

resourceHandle - resource handle

Returns:

IObjectType

Throws:

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

ResourceException - when the resource handle was invalid

getSupportedPermissions

public java.util.List getSupportedPermissions(IResourceHandle resourceHandle)
                                       throws ResourceException

Get list of permissions which are supported by this ACL security sub manager for the given resource handle, i.e. outcome depends on the object type of the given resource handle, e.g. depends whether the resource is a collection or not.

Specified by:

getSupportedPermissions in interface ISecurityManager

Parameters:

resourceHandle - resource handle

Returns:

list of supported permissions of type IAclPermission

Throws:

ResourceException - when the resource handle was invalid

addSupportedPermission

public void addSupportedPermission(IObjectType objectType,
                                   IAclPermission permission)
                            throws AclPersistenceException,
                                   AclPredefinedPermissionException

Register permission as supported permission for an object type.

Parameters:

objectType - object type

permission - permission

Throws:

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

AclPredefinedPermissionException - Exception raised in failure situation

removeSupportedPermission

public void removeSupportedPermission(IObjectType objectType,
                                      IAclPermission permission)
                               throws AclPersistenceException,
                                      AclPredefinedPermissionException,
                                      AclPermissionUsedException

Unregister permission as no longer supported permission from an object type. It can only be unregistered if it is not predefined and not used in an ACL.

Parameters:

objectType - object type

permission - permission

Throws:

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

AclPredefinedPermissionException - Exception raised in failure situation

AclPermissionUsedException - Exception raised in failure situation

isPermissionUsedInAcl

public boolean isPermissionUsedInAcl(IAclPermission permission)
                              throws AclPersistenceException

Check whether or not a permission is used in an ACL.

Parameters:

permission - permission

Returns:

true if the permission is used in an ACL

Throws:

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

supportsNegativeAclEntries

public boolean supportsNegativeAclEntries()

Check whether or not negative ACL entries are supported by this ACL security sub manager.

Returns:

true if negative ACL entries are supported by this ACL security sub manager

isReadOnly

public boolean isReadOnly()
                   throws AclPersistenceException

Check whether or not this ACL security sub manager is read only and no creation or modification operations of ACLs are allowed.

Returns:

true if this ACL security sub manager is read only

Throws:

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