G - Physics – 06 – F
Patent
G - Physics
06
F
G06F 9/44 (2006.01) G06F 1/00 (2006.01) G06F 9/40 (2006.01) G06F 12/14 (2006.01) G06F 15/76 (2006.01) G06F 21/00 (2006.01)
Patent
CA 2386100
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.
Hollander Yona
Horovitz Oded
Rachman Ophir
Clicknet Software Inc.
Mcfadden Fincham
Networks Associates Technology Inc.
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