Setting Up CAPA v. 5.1.5 For First Time Users:

Setting Up CAPA v. 5.1.5 For First Time Users:

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READ ALL INSTRUCTIONS BEFORE PRECEDING WITH THE INSTALLATION.

Please go to http://capa.msu.edu/mailman and subscribe to the CAPA Announce
email list. Anyone interested in receiving CAPA updates and announcements
can add himself or herself to the list. Please notify all instructors and
technical staff that will work with CAPA about adding themselves to the list.

The following installation instructions assume that whoever is installing
the CAPA system already has some knowledge of their operating system and
is familiar with Unix commands such as the following: cd, chown, chmod and
setting permissions, compress/uncompress, cp, ln, lpr, ls, mkdir, pwd, rm,
su, tar, and the vi editor.

In order to complete the installation, you will need to have Perl,
Ghostscript, TeTex, and a webserver (e.g. Apache) installed on your machine
(all of which can be obtained for free). You should know where those
applications are located and where the web server's configuration files are
located (particularly srm.conf). You should also be familiar with killing
and restarting your web daemon.

You will notice lists of files in these instructions to compare your
permissions with. Depending on your operating system, many of your file
sizes may differ with the ones given in these instructions. Please do
not be concerned by this.

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INITIAL SETUP

1.) Create the user "teacher" with group membership "cai". If you are
unfamiliar with adding new users and groups to your system, then use the
instructions below.

Adding new users can be accomplished in one of two ways. Both require you to
login as root first.

a.) Most systems have an "adduser" utility of one form or
another, normally located in the directory /usr/sbin. To use this
utility, login as root, cd to /usr/sbin and enter the command
"adduser" (or "useradd" depending on your system). You will be prompted
for information regarding the user. For Solaris and Digital Unix, you
will be asked to specify the user name (teacher), the UID (normally
the default value), the full name (enter what you like here), the
login group (we use "cai" which stands for Computer Aided Instruction),
a secondary group (we usually leave this blank), a parent directory
(depends upon your system), a login shell (this is a preference item,
here we use /bin/tcsh), and an initial password. If you are asked if
you want to edit an authority file, etc., answer no.

The Linux adduser utility requires you to enter the command as
"adduser teacher" or "useradd teacher". This utility automatically
creates the directories and groups. The Debian version prompts
the administrator for the full name, office number, phone number,
etc. You may choose to enter only the full name and leave the
other information blank. If you wish to have something other than
the Bourne-Again SHell as the login shell, you will need to manually
edit the /etc/passwd file once you have created the user. You will
also need to manually change the group ID number for teacher to have
group membership "cai" using the vipw command. Then use the command
"chgrp -R" or "chown -R" to recursively change the group membership
of the "teacher" home directory.

NOTE: In most cases you will be asked if you want to add the new group
"cai" when you specify it for the new user "teacher". Otherwise, if you
want to use the group "cai" you will have to create it using "addgroup"
(or "groupadd" for some systems).

b.) For all systems, you can manually add users by creating
an entry in the /etc/passwd file in the correct format using the vipw
command. Consult entries already present in /etc/passwd or a book on Unix
system administration if you are going to manually create your users. If you
manually add your users, you will also need to make the appropriate
entries in /etc/group and manually create the home directory for the user.

2.) Login as teacher and create a directory under the teacher account
called CAPA51. This directory should now be owned by "teacher" and have
group membership "cai".

drwxr-xr-x 6 teacher cai 1024 Jul 17 14:03 CAPA51

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SETTING UP THE INSTRUCTOR INTERFACE AND OPTIONAL TELNET STUDENT INTERFACE

You have the option to install the telnet version of the CAPA interface.
It responds much quicker than the web, especially with a slow modem. If
you decide not to enable this feature then skip steps 5 and 6.

Please note that in the following instructions, it is assumed that the
teacher directory is in /home. This may not be the case with your machine
(e.g. /usr/users, /home2, etc.). You may want to make note of this as you
read through these instructions prior to installation.

1.) Become root and copy or move the DIST51 directory to the teacher home
directory. Recursively change the ownership of the DIST51 directory to
teacher with group membership cai.

>chown -R teacher:cai DIST51

2.) We first need to link up the binaries to use the instructor
interface of CAPA. Login as root. Change directory to /usr/local/bin
(or /usr/bin, or whatever will be the default in your users "path").
Symbolically link the binaries contained with the distribution by
entering the commands:

> cd /usr/local/bin
> ln -s /home/teacher/DIST51/LinkToBin/quizzer .
> ln -s /home/teacher/DIST51/LinkToBin/grader .
> ln -s /home/teacher/DIST51/LinkToBin/manager .
> ln -s /home/teacher/DIST51/LinkToBin/qzparse .
> ln -s /home/teacher/DIST51/LinkToBin/allcapaid .
> ln -s /home/teacher/DIST51/LinkToBin/answers .

3.) Check that all of the binaries in /home/teacher/DIST51/LinkToBin
have executable permissions as shown below:

>cd /home teacher/DIST51/LinkToBin
>ls -l
-rwxr-xr-x 1 teacher cai 485095 Jul 17 14:35 allcapaid
-rwxr-xr-x 1 teacher cai 505454 Jul 17 14:35 answers
-rwxr-xr-x 1 teacher cai 2126685 Jul 17 14:35 grader
-rwxr-xr-x 1 teacher cai 2267429 Jul 17 14:35 manager
-rwxr-xr-x 1 teacher cai 2191991 Jul 17 14:35 quizzer
-rwxr-xr-x 1 teacher cai 488366 Jul 17 14:35 qzparse

4.) Now link up the demonstration library in the root directory. To do this,
login as root, change to the root directory (cd /) and enter:

> ln -s /home/teacher/DIST51/demolibrary demolibrary

Check that the demolibrary in the DIST51 folder is owned by "teacher" and
has group membership "cai".

5.) *SKIP THIS STEP IF YOU ARE NOT ENABLING THE TELNET INTERFACE*
Login as "teacher" and copy the file "capalogin" from the directory
DIST51/PutInCAPA51 into the directory /home/teacher/CAPA51. Check
to make sure your permissions match the following:

-rwsr-xr-x 1 teacher cai 585097 Jul 17 15:03 capalogin

Make certain that capalogin is set UID mode (there is an "s" instead
of an "x" in the user's permissions). If not enter the following:

> chmod u+s capalogin

6.) *SKIP THIS STEP IF YOU ARE NOT ENABLING THE TELNET INTERFACE*
For each class that telnet is enabled for, it is added as a user
to the system without a password. The security of the system is
maintained by using capalogin as the login shell. To set up the
demonstration class, become root then use the adduser utility to create the
user "nsc131s0". Enter the group id the same as the instructor (cai), the
home directory to be /home/teacher/CAPA51/nsc131s0, and the login shell
to be /home/teacher/CAPA51/capalogin. When you are prompted to
enter an initial password, hit return. You then need to edit the
/etc/passwd file with the vipw command to remove the "Nologin" field.
(You may also need to edit the file /etc/shadow if your system uses
shadow passwords.)

For Linux systems, you will need to create the user, edit /etc/passwd
to remove the password field, change the group id number, change the home
directory and change the login shell. You will not be prompted for these
within the utility. Make certain the group id number is the same as the
instructor account. Editing the passwd file is done by becoming root
using the vipw command. (You may also need to edit the file /etc/shadow
if your system uses shadow passwords.) Finally, you must delete the
directory created by the adduser utility, for example:

>rm -rf /home/nsc131s0

Depending on your system, you may not be allowed to add a user without a
password using the adduser utility. If this is the case, you will need
to manually add the user with the vipw command.

Repeat the steps above for qns131s0 and xpc131s0 (do not add xns131s0 as
a user).

The correct class entries in /etc/passwd are given below: (The paths to the
home directory and login shell may differ for your system.)

nsc131s0::1004:103:Demonstration Class - Homework:/home/teacher/CAPA51/nsc131s0:
/home/teacher/CAPA51/capalogin
qns131s0::1005:103:Demonstration Class - Quizzes:/home/teacher/CAPA51/qsc131s0:/
home/teacher/CAPA51/capalogin
xpc131s0::1006:103:Demonstration Class - Exam Partial Credit:/home/teacher/CAPA5
1/xpc131s0:/home/teacher/CAPA51/capalogin

7.) Login as teacher and create the class called nsc131s0 in teacher's
CAPA51 directory.

> cd CAPA51
> cp -R /home/teacher/DIST51/PutInCAPA51/nsc131s0 nsc131s0

Then, check to be certain the owner of the nsc131s0 directory is "teacher"
with group membership "cai".

Repeat this step using the qns131s0, xns131s0, and xpc131s0 directories.

8.) Make certain a directory named "records" exists in each of the class
directories (e.g. /home/teacher/CAPA51/nsc131s0/records). Also, make certain the
ownership of all sub-directories and files is "teacher" with group membership
"cai". It is a good idea to check your permission with the ones below.

> cd nsc131s0
> ls -lag
total 94
drwxr-x--x 3 teacher cai 1024 Jul 17 15:37 .
drwxr-xr-x 9 teacher cai 1024 Jul 17 15:37 ..
-rw-r--r-- 1 teacher cai 969 Jul 17 15:37 HWTop
-rw-r--r-- 1 teacher cai 1326 Jul 17 15:37 QuizTop
-rw-r--r-- 1 teacher cai 15 Jul 17 15:37 TeXfooter
-rw-r--r-- 1 teacher cai 777 Jul 17 15:37 TeXheader
-rw-r--r-- 1 teacher cai 11418 Jul 17 15:37 capa.config
-rw-r--r-- 1 teacher cai 1388 Jul 17 15:37 classl
-rw-r--r-- 1 teacher cai 68 Jul 17 15:37 goodbye.msg
-rw-r--r-- 1 teacher cai 720 Jul 17 15:37 help.msg
-rw-r--r-- 1 teacher cai 447 Jul 17 15:37 mail.txt
-rw-r--r-- 1 teacher cai 1529 Jul 17 15:37 managermail.txt
drwxr-xr-x 2 teacher cai 1024 Jul 17 15:37 records
-rw-r--r-- 1 teacher cai 356 Jul 17 15:37 second-login.msg
-rwxr--r-- 1 teacher cai 4870 Jul 17 15:37 set1.qz
-rw-r--r-- 1 teacher cai 2808 Jul 17 15:37 set10.qz
-rw-r--r-- 1 teacher cai 1933 Jul 17 15:37 set11.qz
-rw-r--r-- 1 teacher cai 1824 Jul 17 15:37 set12.qz
-rw-r--r-- 1 teacher cai 10114 Jul 17 15:37 set13.qz
-rw-r--r-- 1 teacher cai 3969 Jul 17 15:37 set14.qz
-rw-r--r-- 1 teacher cai 3684 Jul 17 15:37 set15.qz
-rw-r--r-- 1 teacher cai 1935 Jul 17 15:37 set16.qz
-rw-r--r-- 1 teacher cai 1454 Jul 17 15:37 set17.qz
-rw-r--r-- 1 teacher cai 1551 Jul 17 15:37 set2.qz
-rw-r--r-- 1 teacher cai 7138 Jul 17 15:37 set3.qz
-rw-r--r-- 1 teacher cai 2561 Jul 17 15:37 set4.qz
-rw-r--r-- 1 teacher cai 2106 Jul 17 15:37 set5.qz
-rw-r--r-- 1 teacher cai 2826 Jul 17 15:37 set6.qz
-rw-r--r-- 1 teacher cai 1617 Jul 17 15:37 set7.qz
-rw-r--r-- 1 teacher cai 6197 Jul 17 15:37 set8.qz
-rw-r--r-- 1 teacher cai 2751 Jul 17 15:37 11:05 set9.qz
-rw-r--r-- 1 teacher cai 293 Jul 17 15:37 third-login.msg
-rw-r--r-- 1 teacher cai 151 Jul 17 15:37 welcome.msg
>cd records
>ls -lag
total 36
drwxr-xr-x 2 teacher cai 1024 Jul 17 15:37 .
drwxr-x--x 3 teacher cai 1024 Jul 17 15:37 ..
-rw-r--r-- 1 teacher cai 74 Jul 17 15:37 date1.db
-rw-r--r-- 1 teacher cai 74 Jul 17 15:37 date10.db
-rw-r--r-- 1 teacher cai 74 Jul 17 15:37 date11.db
-rw-r--r-- 1 teacher cai 74 Jul 17 15:37 date12.db
-rw-r--r-- 1 teacher cai 74 Jul 17 15:37 date13.db
-rw-r--r-- 1 teacher cai 74 Jul 17 15:37 date14.db
-rw-r--r-- 1 teacher cai 74 Jul 17 15:37 date15.db
-rw-r--r-- 1 teacher cai 74 Jul 17 15:37 date16.db
-rw-r--r-- 1 teacher cai 74 Jul 17 15:37 date17.db
-rw-r--r-- 1 teacher cai 74 Jul 17 15:37 date2.db
-rw-r--r-- 1 teacher cai 74 Jul 17 15:37 date3.db
-rw-r--r-- 1 teacher cai 74 Jul 17 15:37 date4.db
-rw-r--r-- 1 teacher cai 74 Jul 17 15:37 date5.db
-rw-r--r-- 1 teacher cai 74 Jul 17 15:37 date6.db
-rw-r--r-- 1 teacher cai 74 Jul 17 15:37 date7.db
-rw-r--r-- 1 teacher cai 74 Jul 17 15:37 date8.db
-rw-r--r-- 1 teacher cai 74 Jul 17 15:37 date9.db
-rw-r--r-- 1 teacher cai 51 Jul 17 15:37 set1.db
-rw-r--r-- 1 teacher cai 25 Jul 17 15:37 set10.db
-rw-r--r-- 1 teacher cai 14 Jul 17 15:37 set11.db
-rw-r--r-- 1 teacher cai 8 Jul 17 15:37 set12.db
-rw-r--r-- 1 teacher cai 119 Jul 17 15:37 set13.db
-rw-r--r-- 1 teacher cai 39 Jul 17 15:37 set14.db
-rw-r--r-- 1 teacher cai 39 Jul 17 15:37 set15.db
-rw-r--r-- 1 teacher cai 8 Jul 17 15:37 set16.db
-rw-r--r-- 1 teacher cai 6 Jul 17 15:37 set17.db
-rw-r--r-- 1 teacher cai 10 Jul 17 15:37 set2.db
-rw-r--r-- 1 teacher cai 6 Jul 17 15:37 set3.db
-rw-r--r-- 1 teacher cai 12 Jul 17 15:37 set4.db
-rw-r--r-- 1 teacher cai 16 Jul 17 15:37 set5.db
-rw-r--r-- 1 teacher cai 22 Jul 17 15:37 set6.db
-rw-r--r-- 1 teacher cai 8 Jul 17 15:37 set7.db
-rw-r--r-- 1 teacher cai 77 Jul 17 15:37 set8.db
-rw-r--r-- 1 teacher cai 8 Jul 17 15:37 set9.db

9.) The CAPA system needs to access the files just installed in the teacher
home directory. Make sure this directory has both group and world r-x
privledges.

drwxr-xr-x 6 teacher cai 1024 Jul 17 13:43 teacher

You will have similar files in the qns131s0, xns131s0, and xpc131s0 directories
with the same permissions. Check those also.

The utilities for running CAPA with telnet sessions are now completely
installed.

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

SETTING UP THE WEB VERSION OF THE CAPA INTERFACE

1.) Login in as teacher. Remember, it is assumed that the teacher
directory is in /home which may not be the case for your machine.

2.) Copy the directory /home/teacher/DIST51/CopyToPublicWeb to
/home/teacher/PublicWeb. This directory should be owned by user "teacher"
and have group membership "cai".

> cp -Rd /home/teacher/DIST51/CopyToPublicWeb /home/teacher/PublicWeb

3.) Create the html files for the web interface with system links to the
webpage program to class.html, emailid.html, and getid.html.

> cd /home/teacher/PublicWeb/CAPA/capa-bin
> ln -s webpage class.html
> ln -s webpage emailid.html
> ln -s webpage getid.html

4.) Recursively check that all the files in the PublicWeb directory are
owned by "teacher" and have group membership "cai". Your permissions for
the files in the PublicWeb/CAPA directory should look like the following:

> cd /home/teacher/PublicWeb/CAPA
> ls -l
-rw-r--r-- 1 teacher cai 5935 Jul 17 15:51 ExmPanel.class
-rw-r--r-- 1 teacher cai 4780 Jul 17 15:51 ExpPanel.class
-rw-r--r-- 1 teacher cai 3537 Jul 17 15:51 GLabel.class
drwxr-xr-x 2 teacher cai 1024 Jul 17 15:51 Icons
-rw-r--r-- 1 teacher cai 5817 Jul 17 15:51 TScore.class
drwxr-xr-x 3 teacher cai 1024 Jul 17 15:51 capa-bin
-rw-r--r-- 1 teacher cai 3772 Jul 17 15:51 help.html

Your permissions for the files in PublicWeb/CAPA/capa-bin should like
the following:

> cd capa-bin
> ls -l
-rw-r--r-- 1 teacher cai 33363 Jul 17 15:51 capadiscuss_html
-rws--x--x 1 teacher cai 519680 Jul 17 15:51 capahtml
-rw-r--r-- 1 teacher cai 223 Jul 17 15:51 class.conf
lrwxrwxrwx 1 teacher cai 7 Jul 17 15:51 class.html -> webpage
lrwxrwxrwx 1 teacher cai 7 Jul 17 15:51 email.html -> webpage
lrwxrwxrwx 1 teacher cai 7 Jul 17 15:51 getid.html -> webpage
drwxr-xr-x 2 teacher cai 1024 Jul 17 15:51 teacher
-rw-r--r-- 1 teacher cai 4460 Jul 17 15:51 web.settings
-rws--x--x 1 teacher cai 1141535 Jul 17 15:51 webpage

If your permissions do not match the ones above, change them so they do.

> chmod u+s capahtml
> chmod u+s webpage

5.) You may later see files called web_access.log and ids.log in the capa-bin
directory. These files are automatically generated by the CAPA software.

6.) Edit /home/teacher/PublicWeb/CAPA/capa-bin/web.settings
Change the first line:
set machine capa2.nscl.msu.edu
To read:
set machine your.machine.name

7.) Edit the file /home/teacher/PublicWeb/CAPA/capa-bin/class.conf if
the CAPA51 directory is somewhere other than /home/teacher. For example,
if CAPA51 is in /usr/users/teacher instead of /home/teacher, change:

nsc131s0 /home/teacher/CAPA51 teacher {class getid emailid}

to:

nsc131s0 /usr/users/teacher/CAPA51 teacher {class getid emailid}

Do this for all three lines.

8.) Check to be certain there is a directory
/home/teacher/PublicWeb/CAPA/capa-bin/teacher. Make certain the files
capasbin and capadiscuss are located there, owned by teacher, and a
member of the cai group. Also, double check that the capasbin file
has executable, set UID permission (there is an "s" instead of an "x"
in the user's permissions). Example:

-rwxr-xr-x 1 teacher cai 23453 Jul 17 15:51 capadiscuss
-rwsr-xr-x 1 teacher cai 519680 Jul 17 15:51 capasbin

If not, then enter:
> chmod u+s capasbin

(NOTE: Do not be alarmed if you see the CAPA generated web_access.log
file in this directory also.)

9.) Double check ownership and permissions in the PublicWeb directory again.

10.) Create a directory under teacher called Public. Change directories
into the new Public directory and create another directory name demolibrary.
In Public/demolibrary/ create symbolic links to the Graphics and Links
directories:

> cd /home/teacher/Public/demolibrary
> ln -s /demolibrary/Graphics Graphics
> ln -s /demolibrary/Links Links

11.) When finished you should have the following directory structure:

> pwd
/home/teacher/Public
> ls -l
total 1
drwxr-xr-x 2 teacher cai 1024 Jul 17 16:03 demolibrary
> cd demolibrary
> ls -l
total 0
lrwxrwxrwx 1 teacher cai 41 Jul 17 16:03 Graphics -> /demolibrary/Graphics
lrwxrwxrwx 1 teacher cai 38 Jul 17 16:03 Links -> /demolibrary/Links

12.) Login as root, find the srm.conf file of your web server and edit this
file by making the following changes:

a.) Add the following lines:

Redirect /CAPA/index.html http://your.machine/capa-bin/class.html
Redirect /CAPA/class.html http://your.machine/capa-bin/class.html
Redirect /CAPA/getid.html http://your.machine/capa-bin/getid.html
Redirect /CAPA/emailid.html http://your.machine/capa-bin/emailid.html

Alias /CAPA/ /home/teacher/PublicWeb/CAPA/
Alias /demolibrary/ /home/teacher/Public/demolibrary/

ScriptAlias /capa-bin/ /home/teacher/PublicWeb/CAPA/capa-bin/

Do not be concerned if you webserver's comments suggest using another
file and leaving the srm.conf file blank.

b.) If your machine is dedicated only to CAPA, you may choose to
add the following lines to the srm.conf file also:

ErrorDocument 403 /capa-bin/class.html
ErrorDocument 404 /capa-bin/class.html

This way invalid and forbidden URL's are redirected back to the
class.html page instead of receiving an error message. This will
also allow one to enter just the machine name for the URL and get
to the web login page.

c.) If your machine is dedicated only to CAPA, you may want to
change the following line:
DocumentRoot /some/other/document/root
to the following:
Document Root /home/teacher/PublicWeb/CAPA
Make sure to change the document root in other configuration files,
such as httpd.conf and access.conf, if you plan to do this. This
line might only be located in the httpd.conf file. Carefully search
through the webserver's configuration files and change any lines which
have directory names that should match the DocumentRoot. THE COMMENTS
IN THE CONFIGURATION FILES WILL CLEARLY STATE IF SUCH A CHANGE IS TO
BE MADE.

13.) If the webserver is not owned by teacher, make sure the owner of the
webserver can write to the capa-bin directory. One way of doing this is to
make the capa-bin directory group writable and give the owner of the webserver
membership in the group "cai".

14.) Kill and restart your web daemon.

15.) Students will now be able to access the capa homework via telnet to
your.machine.name and via netscape at the URL:

http://your.machine.name/capa-bin/class.html

if redirected correctly:
http://your.machine.name/CAPA/class.html
http://your.machine.name/CAPA/index.html
http://your.machine.name/CAPA/

and if you opted to add the change in step 12b:
http://your.machine.name

Students can get a CAPAID with a CAPA ID from a previous problem set
at http://your.machine.name/capa-bin/getid.html
or http://your.machine.name/CAPA/getid.html

Students can also have a CAPAID emailed to them without a previous ID from
http://your.machine.name/capa-bin/emailid.html
or http://your.machine.name/CAPA/emailid.html
without a previous CAPA ID.

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FINAL INSTRUCTIONS

1.) Modify /demolibrary/Tools/StdMacros

Replace the line
/LET machine_name="capa2.nscl.msu.edu" // needed for labeling tools
With
/LET machine_name="your.machine.name" // needed for labeling tools

2.) Double check to be certain the ownership and group membership
for each of the files and subdirectories under the teacher account
consistently have "teacher" as owner and "cai" as group. Also double
check that the demolibrary directory in /home/teacher/DIST51 is owned
by "teacher" and has group membership "cai".

3.) Make sure that the user teacher, the owner of the webserver, and
root have the commands allcapaid, perl and gs (ghostscript command) in
their path. You can check this by using the which command. If it is
in the user's path, you will then be shown where the directory for the
command is located.
For example:

> which perl
/usr/bin/perl

4.) If teacher is somewhere other than /home, then you need to edit the
capa.config files in the nsc131s0, qns131s0, xns131s0, and xpc131s0 directories.
Change the following lines to refer to the correct path:

quiz_path = /home/teacher/CAPA51/qns131s0
exam_path = /home/teacher/CAPA51/xns131s0
supp_path = /home/teacher/CAPA51/xpc131s0