Edit report at https://bugs.php.net/bug.php?id=80870&edit=1
ID: 80870
Updated by: cmb@php.net
Reported by: bugs at jth dot net
Summary: base64_decode: Concatenated base64 blocks are
corrupted
-Status: Open
+Status: Not a bug
Type: Bug
Package: Strings related
Operating System: Linux
PHP Version: 7.4.16
-Assigned To:
+Assigned To: cmb
Block user comment: N
Private report: N
New Comment:
base64_encode() is supposed to decode a base64 encoded string. Two
concatenated base64 encoded strings are not a base64 encoded
string.
Previous Comments:
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[2021-03-16 20:13:29] iguv dot jdzx at ghjj dot sddr
again: read the source of roundcubemail which is written in php and solved your issues
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[2021-03-16 19:33:01] bugs at jth dot net
Please, forget the source, and relate to the problem.
Linux base64 is handling decoding correctly.
base64_decode is not handling it correctly, but corrupting data.
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[2021-03-16 19:05:30] bugs at jth dot net
> Please, understand, that we are handling emails
> sent to a server from the outside world composed
> by a variety of email clients out of our control
please understand that everybody dealing with email has that issue and solving that properly is far
outside of a naive usage of base64 / string functions
it's far outside of the scope of a programming language
you are wrong here - look how mail-clients linke rouncube written in php deal with emails! again:
you are wrong here, base64_decode alone can't handle emails, period
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[2021-03-16 18:59:40] bugs at jth dot net
Please, understand, that we are handling emails sent to a server from the outside world composed by
a variety of email clients out of our control. The emails are handled by a PHP program handling
incoming emails as input to a special service.
Please, relate to the fact that the linux base64 program is handling this case correctly, whereas
base64_decode is corrupting data. There is absolutely no reason for this difference. Correcting it
does not cause any backwards compatibility problems, as I assume nobody is using base64_decode for
generating partly corrupt data.
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[2021-03-16 17:32:18] dgdgeg dot evrgrh at ggg dot ag
your mail client properly deals with mime-mail which is *highly* complex especially when it comes to
nesting
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