Application program interface interception system and method
US7213153B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2004 |
| Grant date | May 1, 2007 |
| Priority date | — |
| Expiry date | Jul 15, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2209/542
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of intercepting application program interface, including dynamic installation of associated software, within the user portion of an operating system. An API interception control server in conjunction with a system call interception module loads into all active process spaces an API interception module. An initializer module within the API interception module hooks and patches all API modules in the active process address space. When called by the application programs, the API routines' flow of execution, by virtue of their patched code, is re-directed into a user-supplied code in a pre-entry routine of the API interception module. The API routine might be completely by-passed or its input parameters might be filtered and changed by the user code. During the operation, the API routine is double-patched by the API interception module to ensure that all simultaneous calls to the API routine will re-direct its flow of control into the API interception module. A user-supplied code in a post-entry module of the API interception module might filter or change the return values of the API.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.