From bram at smartelectronix.com  Wed Mar 14 15:28:09 2007
From: bram at smartelectronix.com (Bram - Smartelectronix)
Date: Wed, 14 Mar 2007 15:28:09 +0100
Subject: [Tramline-dev] strange bug: posting forms with ONLY file upload
	field
Message-ID: <45F80679.5060606@smartelectronix.com>

hello everyone,


yesterday night i pent about 2 hours looking for a bug with tramline and 
this is the strange thing that happens:

apache 2.0.52
mod_python 2.7.11
( django trunk, but i'm sure that's irrelevant )

when an upload form ONLY contains a file field [1] tramline is losing a 
few bytes at the end of all files (and really small files are reduced to 
size 0).

However, when apache is restarted, the last few bytes magically appear 
at the end of the files ( even though they already have been moved to 
the repository directory) and the md5 is correct.


When adding a second field (for example a hidden field) [2] in the form 
everything works just fine.


perhaps an interesting bug?


  - bram


[1]

<form action="." method="post" enctype="multipart/form-data">
   <input name="image" id="id_image" type="file" />
   <input value="Upload" type="submit" />
</form>

[2]

<form action="." method="post" enctype="multipart/form-data">
   <input name="image" id="id_image" type="file" />
   <input name="hidden" id="id_hidden" type="hidden" />
   <input value="Upload" type="submit" />
</form>

From faassen at startifact.com  Wed Mar 14 19:26:35 2007
From: faassen at startifact.com (Martijn Faassen)
Date: Wed, 14 Mar 2007 19:26:35 +0100
Subject: [Tramline-dev] strange bug: posting forms with ONLY file upload
	field
In-Reply-To: <45F80679.5060606@smartelectronix.com>
References: <45F80679.5060606@smartelectronix.com>
Message-ID: <8928d4e90703141126w1a043cfcj8b2e2af34ee603f2@mail.gmail.com>

Hi there,

Did you patch mod_python as instructed in the tramline documentation?
If you don't remove that flush there, you get really weird behavior. I
haven't been able to discover what is causing this, unfortunately.

Regards,

Martijn

From bram at smartelectronix.com  Thu Mar 15 13:45:37 2007
From: bram at smartelectronix.com (Bram - Smartelectronix)
Date: Thu, 15 Mar 2007 13:45:37 +0100
Subject: [Tramline-dev] strange bug: posting forms with ONLY file upload
 field
In-Reply-To: <8928d4e90703141126w1a043cfcj8b2e2af34ee603f2@mail.gmail.com>
References: <45F80679.5060606@smartelectronix.com>
	<8928d4e90703141126w1a043cfcj8b2e2af34ee603f2@mail.gmail.com>
Message-ID: <45F93FF1.8000703@smartelectronix.com>

Hi,

Martijn Faassen wrote:
> Did you patch mod_python as instructed in the tramline documentation?
> If you don't remove that flush there, you get really weird behavior. I
> haven't been able to discover what is causing this, unfortunately.

Yes:

[root]# diff apache.py ....../apache.py
192c192
<                 # filter.flush()
---
 >                 filter.flush()


Today I double-checked the date of the pyc files, and noticed:

-rw-r--r--  1 root root   30505 Mar  8 17:40 apache.py
-rw-r--r--  1 root root   22968 Jan 24 14:22 apache.pyc
-rw-r--r--  1 root root   22742 Jan 24 14:22 apache.pyo

But, after deletion and recompilation of the *.pyc and *.pyo, nothing 
changed. (Although adding the hidden field still takes care of the problem.)

Am I correct in assuming I only need to patch the apache.py in the 
current python directory and not in the mod_python install and then 
reinstall mod_python?



  - bram

From faassen at startifact.com  Thu Mar 15 14:49:28 2007
From: faassen at startifact.com (Martijn Faassen)
Date: Thu, 15 Mar 2007 14:49:28 +0100
Subject: [Tramline-dev] strange bug: posting forms with ONLY file upload
	field
In-Reply-To: <45F93FF1.8000703@smartelectronix.com>
References: <45F80679.5060606@smartelectronix.com>
	<8928d4e90703141126w1a043cfcj8b2e2af34ee603f2@mail.gmail.com>
	<45F93FF1.8000703@smartelectronix.com>
Message-ID: <8928d4e90703150649j4fceda80p3fd4cc4f21f1ea08@mail.gmail.com>

Hey,

I just noticed you're using Apache 2.0.52. This is definitely too old;
as INSTALL.txt says, tramline only works with Apache 2.0.55 and later.

Regards,

Martijn