Is it safe to allow users to upload a file as long as I name the file myself?

In general, yes (be sure to also control _where_ the file is going). Read up on perlman:perlsec and http://www.w3.org/Security/Faq/wwwsf4.html

In reply to RE:(4) File Upload Security Question by swiftone
in thread File Upload Security Question by Ovid

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