Controlling access to objects in a hierarchical database

• US 5,878,415 A
• Filed: 03/20/1997
• Issued: 03/02/1999
• Est. Priority Date: 03/20/1997
• Status: Expired due to Term

• Current Assignee: Oracle International Corporation (Oracle Corporation)
• Original Assignee: Novell Incorporated (Open Text Corporation)
• Inventors: Olds, Dale R.
• Primary Examiner(s): Kulik, Paul V.
• Assistant Examiner(s): Corrielus, Jean M.
• Application Number:
  US08/821,087
• Time in Patent Office: 712 Days
• Field of Search: 707/103, 707/10, 707/100, 364/282.1, 364/283.3, 364/286.4, 364/286.5, 380/25, 380/23, 395/200.59, 711/100, 711/154, 711/163
• US Class Current: 1/1
• CPC Class Codes: G06F 12/1491 in a hierarchical protection system, e.g. privilege levels, memory rings
• CPC Class Codes: G06F 21/6218 to a system of files or objects, e.g. local or distributed file system or database
• CPC Class Codes: G06F 2221/2145 Inheriting rights or properties, e.g., propagation of permissions or restrictions within a hierarchy
• CPC Class Codes: Y10S 707/99939 Privileged access

Abstract

Methods and systems are provided for controlling access to objects in a hierarchical database. The database may include a directory services repository, and/or synchronized partitions. An access constraint propagator reads an access control property of an ancestor of a target object. The access control property designates an inheritable access constraint such as an object class filter or an "inheritable" flag. The object class filter restricts a grant of rights to objects of an identified class. The "inheritable" flag allows inheritance of an access constraint on a specific object property. The propagator enforces the inheritable access constraint by applying it to at least the target object.

Claims

1. A method for controlling access to objects in a hierarchical database, the computer-implemented method comprising the steps of:

choosing at least one target object in the hierarchical database;

selecting an ancestor object which is a hierarchical ancestor of the target object;

reading an access control value in an access control property of the ancestor object, the access control property designating an inheritable access constraint; and

propagating the inheritable access constraint by applying it to at least the target object.

2. The method of claim 1, further comprising the step of inserting the access control value in the access control property of the ancestor object.

3. The method of claim 1, wherein the inheritable access constraint provides an object class filter.

4. The method of claim 1, wherein the inheritable access constraint provides inheritance of an access constraint on a specific object property.

5. The method of claim 1, wherein the access control property of the ancestor object:

(a) identifies a trustee object which receives access rights, (b) identifies a property type indicating the property or properties for which those access rights are given, and (c) identifies at least one access right that is given to the trustee object for properties of that property type.

6. The method of claim 5, wherein the access control property of the ancestor object also identifies an object class, and the propagating step includes giving the trustee object the identified access right for a target object property of the identified property type only if the target object belongs to the identified object class.

7. The method of claim 5, wherein the property type identified in the access control property of the ancestor object indicates a specific object property rather than a set of properties, and the propagating step includes giving the trustee object the identified access right for the specific property of the target object.

8. The method of claim 7, wherein the propagating step further comprises giving the trustee object the identified access right for the specific property of a descendant of the target object.

21. A computer storage medium having a configuration that represents data and instructions which will cause at least a portion of a computer system to perform method steps for controlling access to objects in a hierarchical database, the method steps comprising the steps of claim 1.

22. The computer storage medium of claim 21, wherein the method steps comprise the steps of claim 6.

23. The computer storage medium of claim 21, wherein the method steps comprise the steps of claim 7.

24. The computer storage medium of claim 23, wherein the method steps comprise the steps of claim 8.

9. A hierarchical database access control system comprising:

a computer system having a storage medium and a processor;

a hierarchical database stored in the storage medium and susceptible to processing with the processor, the database including a target object and also including an ancestor object which is a hierarchical ancestor of the target object, the ancestor object having an access control property which designates an inheritable access constraint; and

means for propagating the inheritable access constraint by applying it to at least the target object.

10. The system of claim 9, wherein the inheritable access constraint includes an object class filter.

11. The system of claim 9, wherein the inheritable access constraint includes an access constraint on a specific object property.

12. The system of claim 9, wherein the inheritable access constraint includes an "inheritable" flag.

13. The system of claim 9, wherein the means for propagating comprises an inherited rights filter for masking access rights.

14. The system of claim 9, wherein the access control property of the ancestor object:

(a) identifies a trustee object which receives access rights, (b) identifies a property type indicating the property or properties for which those access rights are given, and (c) identifies at least one access right that is given to the trustee object for properties of that property type.

15. The system of claim 14, wherein the access control property of the ancestor object also identifies an object class, and the means for propagating includes means for giving the trustee object the identified access right for a target object property of the identified property type only if the target object belongs to the identified object class.

16. The system of claim 15, wherein the hierarchical database includes a directory services repository.

17. The system of claim 15, wherein the hierarchical database includes synchronized partitions.

18. The system of claim 14, wherein the property type identified in the access control property of the ancestor object indicates a specific object property rather than a set of properties, and the means for propagating includes giving the trustee object the identified access right for the specific property of the target object.

19. The system of claim 18, wherein the hierarchical database includes a directory services repository.

20. The system of claim 18, wherein the hierarchical database includes synchronized partitions.