Trying to prevent large file attachments in Squirrelmail, on U8.10S.

[Xn Nooby]

On Tue, Dec 23, 2008 at 4:47 PM, Chris Mohler <cr33dog at gmail.com> wrote:
> On Wed, Dec 24, 2008 at 3:46 PM, Chris Mohler <cr33dog at gmail.com> wrote:
>> On Wed, Dec 24, 2008 at 3:33 PM, Xn Nooby <xnooby at gmail.com> wrote:
>>> Is it possible to prevent Squirrelmail users from uploading large
>>> files to a server running Squirrelmail?  My testing seems to indicate
>>> that the attachment size limits enforced by Squirrelmail take place
>>> *after* the file has been uploaded - at which time Squirrelmail aborts
>>> the entire message. I will have some remote users, and I do not want
>>> them to be able to upload files that are over a limit (say 10MB).
>>>
>>> If a remote user tries to attach a 500MB attachment to their email, I
>>> don't want them to upload the entire 500MB file, only to then have SM
>>> abort the message.  I want it to fail immediately, or after the 10MB
>>> limit has been reached.
>>>
>>> I though there was a way to do this in Apache or PHP, but have been
>>> unable to find it.  I am running Ubuntu Server 8.10 with Apache,
>>> Postfix, Dovecot, and Squirrelmail.
>>>
>>> Any suggestions on how to get the file attaching process to abort
>>> before it uploads the entire 500MB file?
>>
>> Check the "MAX POST SIZE" (similar to that anyway) setting in php.ini.
>>  That will fail at the point that the limit is reached.  Of course,
>> that's a site-wide setting though...
>
> Oops - this is actually the correct option:
> ; Maximum allowed size for uploaded files.
> upload_max_filesize = 2M
>
> Chris
>
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I have that set already, it seems to take effect only after the file
is uploaded. The file the value is in is located at
/etc/php5/apache2/php.ini.  I'm beginning to think there is no way to
limit the size until it is uploaded.  Perhaps there is some header
data that could be checked that contains the file size?