[Python-Dev] In defense of Capabilities [was: doc for new restricted execution design for Python] (original) (raw)
Nick Coghlan ncoghlan at gmail.com
Sat Jul 8 03:39:04 CEST 2006
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Brett Cannon wrote:
Good point. C code could circumvent the bit check by doing all of the work behind the scenes without pushing the object on the stack. But if the check is in the C code for the object itself it is much harder to get around.
C code can circumvent the bit check by calling fopen() directly and pushing something onto the stack that isn't even recognised by the interpreter as a file object :)
You have to trust C code completely before importing it, because it has access to the platform C library and can do whatever the heck it wants.
Cheers, Nick.
-- Nick Coghlan | ncoghlan at gmail.com | Brisbane, Australia
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