I'm running a linux system I would like to create a login system based
upon the users and passwd of my linux box how could I do this ?
upon the users and passwd of my linux box how could I do this ?
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Re: login system using linux users
Geiregat Jonas wrote:[color=blue]
> I'm running a linux system I would like to create a login system based
> upon the users and passwd of my linux box how could I do this ?
>[/color]
Unless you are running it over SSL I wouldn't recommend that you do, and
even then you should think twice and then choose not do it, create a
user account for each of your users stored independantly from the box
passwords.
~Cameron
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Re: login system using linux users
Geiregat Jonas <eniac@sdf-eu.org> wrote:[color=blue]
> I'm running a linux system I would like to create a login system based
> upon the users and passwd of my linux box how could I do this ?[/color]
In the "old days" that would be really easy, just lookup their userID in
via the getpwent() and do a matching crypt() on the passwd entry.
Modern systems however.. are a different matter, and it'll depend
on your unique setup. (Many, but not all systems are PAM)
I'd suggest looking at the source of 'sudo' or 'login' style programs to see
how these programs do it *on your system*, on my redhat system, sudo uses
PAM, so that'd probably be the place to start. (the other non-redhat systems
I have access to don't have PAM or sudo installed, so I can't run a ldd on
them to see)
A "sledgehamm er" approach might be to look in /etc/shadow- for the entry,
but that'd be kind of a brutal approach.
This, of course, goes against good recommended practices.. but if you're
really sure thats what you want.. at *least* make sure it's only enabled for
certain users, (maybe users in a certain group for example) and try not to
allow it for anything outside your intranet, take the usual sane
precautions, etc.. etc..
Using the conventional authentication mechanisms are almost always a better
bet.
Jamie
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