What all should I be allowing?

Somewhat depends on what exactly you're doing with the files and filenames...

Just as an example, you sometimes wouldn't want people to be able to get outside of a certain subdirectory tree with things like /../../../, in which case you'd need to disallow two dots in a row (as a directory name)...

If checking against a whitelist would work in your case, I'd do that (e.g. using a hash).

Some more details/context might help.

In reply to Re: Testing file input validity in FF by almut
in thread Testing file input validity in FF by Anonymous Monk

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