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Re: I want to do a ISP Pam module! Can anyone help



Thank you for your thoughts Mike Glover;
	Here are a few questions back!

1) I have never programed in C, but I do understand how it works because
I have only programed in COBOL, FORTRAN, Pascal, Clipper, and Perl. 

2) I will download the new pam source files, and I understand I can
either modify the Tally or the Limit module to access the database and
give me the ability to limit to one at a time. 

3) For the 30 hour and 90 hour accounts. I am currently using the
messages file, but if the system administrator kills the account there
is no log that the modem has exited, and there is no live data were I
can let the user know how may hours they have.

4) As for the reason I believed I had to use PAM to have access to the
live data on that the users are doing something or not. I am sorry but I
do not know how to access the information to do these projects out side
of the PAM module.

5) Since all these projects have to deal with user accounts and there
ability to log on or stay on. Is PAM not a natural place to put such a
module?





Mike Glover wrote:
> 
> The first one should be pretty straightforward with PAM.  The second two
> are probably best solved elsewhere.  My thoughts are below...
> 
> On Mon, 22 Jan 2001, ken rhodes wrote:
> >       Hi;
> >
> >       For those who would like to help, or are interested. I am reading the
> > PAM Documentation. I understand I have to program in C. I am just having
> > a problem understanding where to start.
> >
> > What I need the module to do;
> >    1) Restrict logins to having only one login at a time. ( With the
> > exception of the system administration team)
> 
>    You may be able to do this with existing modules.  What you want to do
> is set up a second user database that contains only the currently logged
> in users, then refuse a login if the user is already in the database.  If
> they're not there, add them.  This would need to be last in the stack.
> 
> >    2) Track limited accounts. Maybe even e-mail the account, or pop up a
> > warning screen when they are at there limit. I need this programmable
> > because right now we have 30 hour and 90 hour accounts, and we may add
> > more in the future. I also need this part to email the accounting person
> > with the amount these limited accounts are over for billing purposes.
> 
>    Where do you store user's monthly usage stats?  What granularity do you
> need? (i.e is it enough to notify a user within 15 minutes of their going
> over limit? 5 minutes? 1?)  The easiest solution I see is setting up a cron
> job to query your usage stats every x minutes,  noticing who's over limit,
> and notifying them and your accounting person.
> 
>    If you're not keeping usage stats, then PAM can help you do that.
> 
> >    3) I would also like this module to check to see when all of our
> > phone lines are busy, and kick off people who have not done anything for
> > 20 minutes or more.
> 
>    This is probably best done outside of PAM.  Write a daemon to watch your
> phone lines and notice when they're all used.  Then check the output of
> 'w' or read /proc to find out who's been idle.  then 'kill -TERM
> <login_shell>'
> 
> -mike
> 
> >
> > >From all of my reading in the PAM modules there are no modules that fit
> > in this category, but if there is a teem already working on a project
> > like this I would like to start to help; Otherwise, I would like to set
> > up a project team for this project.
> >
> > Thank you;
> > Ken Rhodes
> > Webmaster
> > http://webside.ca
> >
> >
> >
> > _______________________________________________
> > Pam-list mailing list
> > Pam-list@redhat.com
> > https://listman.redhat.com/mailman/listinfo/pam-list
> >
> --
> 
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