Re: File attachment process

Wow! Thank you so much! You have answered so many of my questions! Is there
any way I can add points to you or up your score some how?



Jonathan Angliss-2 wrote:
> 
> On Thu, 9 Jul 2009 09:55:43 -0700 (PDT), pantera975
> <[email protected]> wrote:
> 
>>
>>I have been working on a project for work where I'm changing the file
>>attachment process in squirrelmail. I've got most of it worked out but I'm
>>stuck in a certain area. I'll try to explain it clearly.
> 
> What changes are you making?
> 
>>User1: Writes an e-mail and adds an attachment. By doing this the file is
>>put /var/spool/squirrelmail/attach/ and named by GenerateRandomString(32,
>>'', 7). He has not sent yet so at this point
/var/spool/squirrelmail/attach/
>>contains 1 file (3543eknohgsogjfdnsdfh)
>>
>>User2: Writes an e-mail and adds an attachment. Their attachment does the
>>same thing but with a different random string. Now
>>/var/spool/squirrelmail/attach/ has 2 files. (3543eknohgsogjfdnsdfh and
>>aklfas5435jn6as)
>>
>>User1: Clicks send and somehow squirrelmail knows to only get
>>3543eknohgsogjfdnsdfh and not the other. How is this done? What part of
the
>>code tells it what files names to look for in
>>/var/spool/squirrelmail/attach/ during the send process.
> 
> When the attach code is ran, the file is uploaded, and dropped into
> the $attach_dir folder (saveAttachedFiles() in src/compose.php).  The
> temporary name, and actual file name are stored in the Message object
> (see line 1399 of src/compose.php and line 1089 of
> class/mime/Message.class.php).  This is then serialized, and added to
> the compose form.  See the hidden form item attachments around line
> 1277 in src/compose.php.
> 
> When the message is finally ready for sending, the delivery class is
> called (class/deliver/Deliver_SMTP.class.php), where writeBody is
> executed, which walks through all the attachments, and writes them to
> the necessary stream (smtp/sendmail).
> 
> That help?
> 
> -- 
> Jonathan Angliss
> <[email protected]>
> 
> 
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