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

PAM_GET_AUTHTOK(3)		   BSD Library Functions Manual 	       PAM_GET_AUTHTOK(3)

     pam_get_authtok -- retrieve authentication token

     Pluggable Authentication Module Library (libpam, -lpam)

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

     pam_get_authtok(pam_handle_t *pamh, int item, const char **authtok, const char *prompt);

     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 changing authentication

     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.

     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.

     openpam_subst(3), pam(3), pam_get_item(3), pam_get_user(3), pam_strerror(3)

     The pam_get_authtok function is an OpenPAM extension.

     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.

BSD					December 18, 2011				      BSD

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