[LON-CAPA-admin] Images not showing up in student view for some questions

Raymond Batchelor batchelo at sfu.ca
Thu Oct 17 21:08:07 EDT 2013

Well, that particular image is not published system wide, because it does not appear on this side of the continent.
Perhaps the author (s2bdedmo:vcu) did not allow Sytemwide Copyright/Diustribution or did not yet publish it.  Better try to contact them.

----- Original Message -----
From: "Michael Dugdale" <michael.dugdale at johnabbott.qc.ca>
To: "list about administration and system updating" <lon-capa-admin at mail.lon-capa.org>
Sent: Thursday, 17 October, 2013 17:52:40
Subject: [LON-CAPA-admin] Images not showing up in student view for some	questions


Looking for some help here. A chemistry teacher has reported a number of cases where the images associated with a problem don't show up for students. It loads fine for course coordinators. It's just the images that are included in the problem that are not showing up; the rest of the problem loads fine. 

Trying to open just the image in a new tab (as student) gives the following error: 

LON-CAPA Access Control 

Access : Browse resources 
Resource: /res/vcu/s2bdedmo/SOL05_HS_Chemistry/images/SOLHS05_Chemistry_19_MixingSolutionsTable.JPG 
Action : Access Denied 
Sorry ... 
This action is currently not authorized. 

I've looked in the file system, and the files are there, owner/group are www:www with permissions -rw-r--r-- 

As far as Apache logs go, I see many remarks of the form: 

[Thu Oct 17 20:23:36 2013] [error] access to /res/vcu/s2bdedmo/SOL05_HS_Chemistry/images/SOLHS05_Chemistry_19_MixingSolutionsTable.JPG failed for, reason: Access Denied for michaeldugdale domain johnabbott access bre 

Trying to get a sense of what's going on, I checked the problem file on the server's file system and it does, indeed have the line 
<allow src="/res/vcu/s2bdedmo/SOL05_HS_Chemistry/images/SOLHS05_Chemistry_19_MixingSolutionsTable.JPG"/ > 

And I've double-checked that SELINUX is disabled... 

I'm fresh out of ideas about where to look next. Does anyone have any thoughts on where I should look? 

Thanks in advance, 

Michael Dugdale 

Michael Dugdale 
Co-chair (Scheduling) 
Department of Physics 
John Abbott College 
21,275 Lakeshore Road 
Ste. Anne de Bellevue, Québec 
H9X 3L9, Canada 
(514) 457-6610 Ext. 5888 
michael.dugdale at johnabbott.qc.ca 

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Raymond J. Batchelor, PhD.
Department of Chemistry
Simon Fraser University

Phone: 778-782-5635

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