Re: [users@httpd] Web server corrupting image?

Andres Monroy-Hernandez <andres@xxxxxxxxxxxxxxxx> · Wed, 08 Jun 2005 16:35:50 -0400

Good catch. I do have mod_perl enabled, but the images are real files, 

not images served by a mod_perl application.

I restarted apache and removed the configuration elements of mod_perl. I 

still get the same problem. Now, when looking at the response I no 

longer see the perl code, but still the browser can't understand it.

Craig Dunigan wrote:

I'm guessing that you are using a mod_perl handler to serve these, and it's
going wrong on the second one.  I opened it in vim and got this:

dDate(">=",2003,31,1)^@^Mjkey=00130779^B5^DÃµA^B^B^B^A^@aÃ˜^^^DÃ¸Ã¯^QJÃ¸^Ge^@^@p<97>~hÃ²d^@^@q<97>~hÃ²d^@^@^L954925515513 

$obj->parsedDate(">=",2003,27,1)^@^Mjkey=00004348^B5^DÃµA^B^B^B^A^@aÃ˜^^^DÃ¸Ã°^QJÃ¸^Ge^@^@p<97>~hÃ²d^@^@q<97>~hÃ²d^@^@^L954925269341 

$obj->parsedDate(">=",2003,32,1)^@^Mjkey=00008843^B5^DÃµA^B^B^B^A^@aÃ˜^^^DÃ¸Ã™^UJÃ¸^Ge^@^@p<97>~hÃ²d^@^@q<97>~hÃ²d^@^@^L954925516554 

$obj->parsedDate(">=",2000,38,1)^@^Mjkey=00003088^B5^DÃµA^B^B^B^A^@aÃ˜^^^DÃ¸Ãš^UJÃ¸^Ge^@^@p<97>~hÃ²d^@^@q<97>~hÃ²d^@^@^L954925517577 

$obj->parsedDate(">=",1999,26,1)^@^Mjkey=00023172^B5^DÃµA^B^B^B^A^@aÃ˜^^^DÃ¸Ã›^UJÃ¸^Ge^@^@p<97>~hÃ²d^@^@q<97>~hÃ²d^@^@^L954925517584 

$obj->parsedDate(">=",2001,21,1)^@^Mjkey=00002881^B5^DÃµA^B^B^B^C^@d^@Ã˜^^^DÃ¸Ãœ^UJÃ¸^Ge^@^@p<97>~hÃ²d^@^@q<97>~hÃ²d^@^@^O110978978737417 

$obj->parsedDate(">=",2000,14,1)^@^Mjkey=00133570^B5^DÃµA^B^B^B^A^@aÃ˜^^^DÃ¸Ã?^UJÃ¸^Ge^@^@p<97>~hÃ²d^@^@q<97>~hÃ²d^@^@^L

Looks like perl code to me, like maybe you're serving an un-dereferenced code 

ref?

On Wed, 8 Jun 2005, Andres Monroy-Hernandez wrote:

Hello,

I have two identical images (gifs). One is displayed correctly, the 

other one not. I hope you can provide any hints.

In order to make sure both files are identical I compared their 

hexadecimal fingerprint by doing:

% od good.gif > good.hex ; od bad.gif > bad.hex; diff bad.hex good.hex

I checked the HTTP headers for both images and everything looks fine 

looks fine: Content-Type and Content-Length are the same.

The Etag is different, but I believe this is normal.

The good one:
---------------------------
Response Headers - http://openurl.uquebec.ca:3210/sfxctrl/pix.1.0/good.gif
Date: Wed, 08 Jun 2005 17:02:08 GMT
Server: Apache/2.0.52 (Unix) mod_ssl/2.0.52 OpenSSL/0.9.7e DAV/2
Last-Modified: Sun, 13 Jun 2004 08:44:09 GMT
Etag: "1540fa-2a8-f9d9e840"
Accept-Ranges: bytes
Content-Length: 680
Keep-Alive: timeout=15, max=99
Connection: Keep-Alive
Content-Type: image/gif

200 OK
---------------------------

The bad one:
---------------------------
http://openurl.uquebec.ca:3210/sfxctrl/pix.1.0/bad.gif
Date: Wed, 08 Jun 2005 17:00:48 GMT
Server: Apache/2.0.52 (Unix) mod_ssl/2.0.52 OpenSSL/0.9.7e DAV/2
Last-Modified: Sun, 13 Jun 2004 08:44:09 GMT
Etag: "154056-2a8-f9d9e840"
Accept-Ranges: bytes
Content-Length: 680
Keep-Alive: timeout=15, max=100
Connection: Keep-Alive
Content-Type: image/gif

200 OK

---------------------------

Thanks in advance.

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