Bug 41746 – Prevent screenshots of teacher's computer

Bug 41746 - Prevent screenshots of teacher's computer


Summary:	Prevent screenshots of teacher's computer

Status:	CLOSED FIXED

Product:	UCS@school
Classification:	Unclassified
Component:	UMC - Computer room
Version:	UCS@school 3.2 R2
Hardware:	Other Linux

Importance:	P5 normal (vote)
Target Milestone:	UCS@school 3.2 R2 Errata
Assigned To:	Florian Best
QA Contact:	Daniel Tröder

URL:
Keywords:	interim-3

Depends on:	40210
Blocks:
	Show dependency tree / graph

Reported:	2016-07-07 16:06 CEST by Sönke Schwardt-Krummrich
Modified:	2016-12-12 13:16 CET (History)
CC List:	2 users (show)

See Also:
What kind of report is it?:	Bug Report
What type of bug is this?:	2: Improvement: Would be a product improvement
Who will be affected by this bug?:	2: Will only affect a few installed domains
How will those affected feel about the bug?:	1: Nuisance – not a big deal but noticeable
User Pain:	0.023
Enterprise Customer affected?:
School Customer affected?:
ISV affected?:
Waiting Support:
Flags outvoted (downgraded) after PO Review:
Ticket number:
Bug group (optional):	External feedback, Roadmap discussion
Max CVSS v3 score:

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.

Description Sönke Schwardt-Krummrich

2016-07-07 16:06:30 CEST

A backport is required for UCS@school 3.2R2. 



+++ This bug was initially created as a clone of Bug #40210 +++

A customer asked if it is possible to prevent screenshots or the supervision feature for windows clients which are used by a teacher (teacher is logged on).

Quick and dirty workaround:

host# cd /usr/share/pyshared/univention/management/console/modules/computerroom
host# diff -u __init__.py.ORIG __init__.py
--- __init__.py.ORIG	2015-12-10 12:47:24.751279284 +0100
+++ __init__.py	2015-12-10 13:13:14.450585803 +0100
@@ -542,7 +542,7 @@
 		"""
 
 		tmpfile = computer.screenshot
-		if tmpfile is None:
+		if tmpfile is None or computer.isTeacher:
 			# vnc has not (yet) received any screenshots from the computer
 			# dont worry, try again later
 			self.finished(request.id, None)

Comment 1 Florian Best

2016-10-14 13:43:24 CEST

ucs-school-umc-computerroom.yaml:
r73234 | YAML Bug #41746

ucs-school-umc-computerroom (5.0.10-3):
r73222 | Bug #41746: Update Copyright to 2016
r73221 | Bug #41746: prevent to create screenshots of certain users
r73220 | Bug #41746: prevent to create screenshots of certain users

Comment 2 Daniel Tröder

2016-11-25 14:00:13 CET

OK: merge
OK: manual test (switching UCR and watching teachers desktop)

Comment 3 Sönke Schwardt-Krummrich

2016-12-12 13:16:27 CET

UCS@school 4.1 R2 v9 has been released.

http://docs.software-univention.de/changelog-ucsschool-4.1R2v9-de.html