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OPENPAM_NULLCONV(3) Library Functions Manual OPENPAM_NULLCONV(3) NAME openpam_nullconv -- null conversation function LIBRARY Pluggable Authentication Module Library (libpam, -lpam) SYNOPSIS #include <sys/types.h> #include <security/pam_appl.h> #include <security/openpam.h> int openpam_nullconv(int n, const struct pam_message **msg, struct pam_response **resp, void *data); DESCRIPTION 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. RETURN VALUES The openpam_nullconv() function returns one of the following values: [PAM_CONV_ERR] Conversation failure. SEE ALSO openpam_ttyconv(3), pam(3), pam_authenticate(3), pam_chauthtok(3), pam_prompt(3), pam_set_item(3), pam_strerror(3), pam_vprompt(3) STANDARDS The openpam_nullconv() function is an OpenPAM extension. AUTHORS 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. The OpenPAM library is maintained by Dag-Erling Smorgrav <email@example.com>. NetBSD 7.1.2 September 12, 2014 NetBSD 7.1.2