pam_get_authtok(3) - NetBSD Manual Pages

PAM_GET_AUTHTOK(3)      NetBSD Library Functions Manual     PAM_GET_AUTHTOK(3)


NAME
pam_get_authtok -- retrieve authentication token
LIBRARY
Pluggable Authentication Module Library (libpam, -lpam)
SYNOPSIS
#include <sys/types.h> #include <security/pam_appl.h> int pam_get_authtok(pam_handle_t *pamh, int item, const char **authtok, const char *prompt);
DESCRIPTION
The pam_get_authtok function returns the cached authentication token, or prompts the user if no token is currently cached. Either way, a pointer to the authentication token is stored in the location pointed to by the authtok argument. The item argument must have one of the following values: PAM_AUTHTOK Returns the current authentication token, or the new token when changing authentication tokens. PAM_OLDAUTHTOK Returns the previous authentication token when chang- ing authentication tokens. The prompt argument specifies a prompt to use if no token is cached. If it is NULL, the PAM_AUTHTOK_PROMPT or PAM_OLDAUTHTOK_PROMPT item, as appropriate, will be used. If that item is also NULL, a hardcoded default prompt will be used. Either way, the prompt is expanded using openpam_subst(3) before it is passed to the conversation function. If pam_get_authtok is called from a module and the authtok_prompt / oldauthtok_prompt option is set in the policy file, the value of that option takes precedence over both the prompt argument and the PAM_AUTHTOK_PROMPT / PAM_OLDAUTHTOK_PROMPT item. If item is set to PAM_AUTHTOK and there is a non-null PAM_OLDAUTHTOK item, pam_get_authtok will ask the user to confirm the new token by retyping it. If there is a mismatch, pam_get_authtok will return PAM_TRY_AGAIN.
RETURN VALUES
The pam_get_authtok function returns one of the following values: [PAM_BUF_ERR] Memory buffer error. [PAM_CONV_ERR] Conversation failure. [PAM_SYSTEM_ERR] System error. [PAM_TRY_AGAIN] Try again.
SEE ALSO
openpam_subst(3), pam(3), pam_get_item(3), pam_get_user(3), pam_strerror(3)
STANDARDS
The pam_get_authtok function is an OpenPAM extension.
AUTHORS
The pam_get_authtok 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. NetBSD 6.0.3 December 18, 2011 NetBSD 6.0.3

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