On Tue, 29 Sep 2020 19:58:06 -0500, Paul Gilmartin <paulgboul...@aim.com> wrote:

>On Tue, 29 Sep 2020 16:59:34 -0700, Charles Mills wrote:
>
>>Applications should not "validate" filenames before attempting to open or 
>>create a file. Present the name to the file system API and report any error 
>>back to the user. Application filename validation is what leads to these 
>>inconsistencies.
>> 
>I'll emphasize that.  Applications and UIs should not modify filenames -- add 
>blanks;
>remove blanks; change case, etc.  A related problem arose a while ago when the
>requirement (possibly delusional) for mixed-case passwords appeared.  Many
>applications which though they were doing a users a favor by converting 
>passwords
>to upper case had to be modified.  The operation should always have been left 
>to
>the security product.

RACF required applications to present the password in upper-case, so the 
applications were not at fault for doing so. Blame RACF for that one.

-- 
Walt

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