[K12OSN] Re: teachertool upgrade

Fri Nov 14 00:41:15 UTC 2008

Robert-

Thank you very much for the details.

But ran into an issue:

yum  install  fltk  fltk-devel  - [ worked ok ]
yum  install  libXpm-devel  libpng-devel   libjpeg-devel - [ worked ok
]
yum  install  libXmu-devel  libXaw-devel  imake - [ worked ok ]
yum  install  xscreensaver-base - [ worked ok ]
yum install vncreflector - [ worked ok ]
download: wget 
http://downloads.sourceforge.net/vnc-tight/tightvnc-1.3.9_unixsrc.tar.bz2
 - [ worked ok ]
tar  -xvjf  tightvnc-1.3.9_unixsrc.tar.bz2 - [ worked ok ]

cd to the tightvnc dir and type xmkmf - [PROBLEM ]

My server did not have " xmkmf " - command not found. Did a little
searching and found a post to " yum install imake "
Did that and was then able to run the ' xmkmf ' command.

Then tried the " make World " - and got a whole SLEW of errors.... 

that ended with:
argsresources.c:353: error: âappDataResourceListâ undeclared (first use
in this function)
argsresources.c:359: error: âappContextâ undeclared (first use in this
function)
argsresources.c:359: error: âactionsâ undeclared (first use in this
function)
argsresources.c:366: error: âlistenSpecifiedâ undeclared (first use in
this function)
argsresources.c:377: error: âAppDataâ has no member named
âpasswordDialogâ
argsresources.c:377: error: âTrueâ undeclared (first use in this
function)
argsresources.c:384: error: âAppDataâ has no member named
âpasswordDialogâ
make[2]: *** [argsresources.o] Error 1
make[2]: Leaving directory `/root/work/vnc_unixsrc/vncviewer'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/root/work/vnc_unixsrc'
make: *** [World] Error 2

So not sure what happened or went wrong.... but that's as far as I got
with the instructions.

thanks,
john-

I have the complete list of errors if needed, was not sure an
attachment would work.

>>> "Robert Arkiletian" <robark at gmail.com> 11/13/2008 11:17 AM >>>
On Wed, Nov 12, 2008 at 9:38 PM, John Montoya <jomontoya at kern.org>
wrote:
> Hello,
>
> I need help with a new k12LTSP 5 EL server install.
>
> I would like to update the existing 4.2 installed and running version
of fl_teachertool.
> I want to use the newest version of teachertool - v0.62
>
> The install documents are a little confusing.
>

Okay I will walk you through it.

yum  install  fltk  fltk-devel
yum  install  libXpm-devel  libpng-devel   libjpeg-devel
yum  install  libXmu-devel  libXaw-devel  imake
yum  install  xscreensaver-base
yum install vncreflector

download:
wget 
http://downloads.sourceforge.net/vnc-tight/tightvnc-1.3.9_unixsrc.tar.bz2

tar  -xvjf  tightvnc-1.3.9_unixsrc.tar.bz2
cd to the tightvnc dir
and type

xmkmf
make World

cp vncviewer binary to /usr/bin but rename it to teachertool-vncviewer
cp vncpasswd binary to /usr/bin but rename it to teachertool-vncpasswd

download:
wget 
http://downloads.sourceforge.net/vncsnapshot/vncsnapshot-1.2a-src.tar.gz

tar  -xvzf  vncsnapshot-1.2a-src.tar.gz
cd to the dir
then type

make

cp  vncsnapshot  /usr/bin

download:
wget 
http://www3.telus.net/public/robark/Fl_TeacherTool/fl_teachertool-0.62-src.tar.gz

tar -xvzf  fl_teachertool-0.62-src.tar.gz
cd to the dir
then type

make
make  install

The rest is exactly copied from my site:
(understand that there is a certain amount of risk to enabling
control/monitor) If you decide to enable this do not enable shell or
telnet in lts.conf
in /opt/ltsp/i386/etc/lts.conf

that is, keep these commented out

  #SCREEN_02          = shell
  #SCREEN_03          = telnet

 and also don't allow students to bring in laptops (with linux) There
is a risk that the monitor/control password can be stolen.

==========================================
Next follow the old steps to enable monitor/control in k12ltsp

http://www3.telus.net/public/robark/Fl_TeacherTool/installationk12ltsp.html#monitor

(Note: Oct 27, 2008 The procedure in the above link produces a
security
issue and is no longer recommended. This means
Control/Monitor/Snapshots will
not work. See link for further details.)

Almost finished...

Next (as root of course)

mkdir  -p  /usr/local/etc/fl_teachertool/teacher
chmod  700  /usr/local/etc/fl_teachertool/teacher

Now create a new file
vim  /usr/local/etc/fl_teachertool/teacher/vncreflectorpass

inside this file you should type two passwords like this

fullcontrolpassword
viewonlypassword

You make up your own passwords. They should be in plain text.
Then
chmod 600  /usr/local/etc/fl_teachertool/teacher/vncreflectorpass

Now you need to create the encrypted versions of these plain text
passwords
Again as root issue the command:

teachertool-vncpasswd 
/usr/local/etc/fl_teachertool/teacher/teacherpass

Now only type in *one* password.
The one you typed in the first line of vncreflectorpass (eg
fullcontrolpassword)
Now
chmod 600  /usr/local/etc/fl_teachertool/teacher/teacherpass

Next
teachertool-vncpasswd  /usr/local/etc/fl_teachertool/clientpass

Note: the dir is *not* the same as teacherpass
Again only type in *one* password.
The one you typed in the second line of vncreflectorpass (eg
viewonlypassword)

Now
chmod  644  /usr/local/etc/fl_teachertool/clientpass

Last thing:
Make your broadcast windows bigger than 800x600
I prefer 1024x768 broadcast windows

vim /etc/xinetd.d/vncts

change 16bit 800x600 to 1024x768

#service xinetd restart

That's it. Don't forget to configure
/usr/local/etc/fl_teachertool/fl_teachertool.conf
if you have multiple rooms (or wish to divide classrooms into
sections)

If you are not sure how to configure it read the docs here
http://www3.telus.net/public/robark/Fl_TeacherTool/documentation.html 
Specifically the last 2 sections.

Enjoy!!!!!!!!!

> Any guidance will be appreciated,
>
> thanks,
> -john
>
> --
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>
>

-- 
Robert Arkiletian
Eric Hamber Secondary, Vancouver, Canada
Fl_TeacherTool http://www3.telus.net/public/robark/Fl_TeacherTool/ 
C++ GUI tutorial http://www3.telus.net/public/robark/ 

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