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Full Discussion: Questions about user authentication in my application
Top Forums Programming Questions about user authentication in my application Post 302473153 by mythmgn on Friday 19th of November 2010 04:56:50 AM
Old 11-19-2010
Questions about user authentication in my application
Hi, all,

I am a newbie to linux authentication part.

Questions below really puzzle me:

[1] How to authenticate users from local storage(passwd shadow) and nis server?
(Without PAM)
getpwnam_r() will return a '*' in the pw_passwd field of "struct passwd".

I can parse /etc/shadow. But how can I do it on nis server? in my env, shadow file only contains local user info.

PLUS, how to maintain the session without PAM?

I have some experience in web development. There r some structure we can use to maintain the session. How to do it in a C/S design?

[2] Use pam to authenticate them.

My application is a c/s design. Suppose client needs to send the username/passwd to server with some tcp/udp pakages. Server uses pam to get it authenticated.

How to fulfill this?

Any examples? what if the client has a GUI? including for pam.d/my_application?

some pseudo codes will do.

Thanks a million.
 

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LEARN ABOUT CENTOS

pam-panel-icon

PAM-PANEL-ICON(1)					      General Commands Manual						 PAM-PANEL-ICON(1)

NAME

       pam-panel-icon - A notification area indicator of pam_timestamp status

SYNOPSIS

       pam-panel-icon

DESCRIPTION

       pam-panel-icon  should  be  automatically  started when starting an X11 desktop environment.  For example, in GNOME gnome-session should be
       configured to start pam-panel-icon.  In a properly configured system it should never be necessary to start pam-panel-icon manually.

       pam-panel-icon uses pam_timestamp_check(8) to watch the pam_timestamp timestamp status.	If  the  pam_timestamp	authorization  is  active,
       allowing  an  unprivileted user to temporarily authenticate as the root user without providing a password, an icon in the notification area
       of the panel is displayed.  The icon allows dropping the authorization immediately.

EXIT STATUS

       Ordinarily, pam-panel-icon keeps running until the X11 desktop session ends, and then returns 0.  pam-panel-icon only returns with non-zero
       status on unexpected error.

FILES

       /sbin/pam_timestamp_check
	      A hard-coded location of the pam_timestamp_check executable.

SEE ALSO

       pam_timestamp(8), pam_timestamp_check(8)

Red Hat 							    2009-10-05							 PAM-PANEL-ICON(1)
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