anyone here got a function to find is a string is base64encoded?
jbv.silences at Club-Internet.fr
Sun Jul 25 00:47:19 CDT 2004
> > Hi Folks,
> > I am trying to determine if a string is base64 encoded, I don't know in
> > advance if it will be or not, but I need to find out so that I can
> > decode as needed. Any hint?
> > cheers
> > andre
I once wrote a MC cgi script that was decoding incoming emails
featuring base64 encoded parts. I just retrieved that script and first
thing it did was to find the following string in the email :
and then it seemed to decide that each following line containing "--"
was base64 encoded.
IMHO this implies 2 things :
1) base64 encoded strings don't pop out of nowhere, they're
always in a context which features a header of some sort that can be
used to make the decision about decoding...
2) without any header indication, there's probably no way to decide
whether a string is base64 encoded...
but I could be wrong...
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