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NetBSD 6.1.5 - man page for openpam_nullconv (netbsd section 3)

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OPENPAM_NULLCONV(3)		   BSD Library Functions Manual 	      OPENPAM_NULLCONV(3)

     openpam_nullconv -- null conversation function

     Pluggable Authentication Module Library (libpam, -lpam)

     #include <sys/types.h>
     #include <security/pam_appl.h>
     #include <security/openpam.h>

     openpam_nullconv(int n, const struct pam_message **msg, struct pam_response **resp,
	 void *data);

     The openpam_nullconv function is a null conversation function suitable for applications that
     want to use PAM but don't support interactive dialog with the user.  Such applications
     should set PAM_AUTHTOK to whatever authentication token they've obtained on their own before
     calling pam_authenticate(3) and / or pam_chauthtok(3), and their PAM configuration should
     specify the use_first_pass option for all modules that require access to the authentication
     token, to make sure they use PAM_AUTHTOK rather than try to query the user.

     The openpam_nullconv function returns one of the following values:

     [PAM_CONV_ERR]	 Conversation failure.

     openpam_ttyconv(3), pam(3), pam_authenticate(3), pam_chauthtok(3), pam_prompt(3),
     pam_set_item(3), pam_strerror(3), pam_vprompt(3)

     The openpam_nullconv function is an OpenPAM extension.

     The openpam_nullconv function and this manual page were developed for the FreeBSD Project by
     ThinkSec AS and Network Associates Laboratories, the Security Research Division of Network
     Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 (``CBOSS''), as part of the
     DARPA CHATS research program.

BSD					December 18, 2011				      BSD
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