openpam_ttyconv(3) - NetBSD Manual Pages

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OPENPAM_TTYCONV(3)      NetBSD Library Functions Manual     OPENPAM_TTYCONV(3)


NAME

     openpam_ttyconv -- simple tty-based 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_ttyconv(int n, const struct pam_message **msg,
         struct pam_response **resp, void *data);


DESCRIPTION

     The openpam_ttyconv function is a standard conversation function suitable
     for use on TTY devices.  It should be adequate for the needs of most
     text-based interactive programs.

     The openpam_ttyconv function displays a prompt to, and reads in a pass-
     word from /dev/tty. If this file is not accessible, openpam_ttyconv dis-
     plays the prompt on the standard error output and reads from the standard
     input.

     The openpam_ttyconv function allows the application to specify a timeout
     for user input by setting the global integer variable
     openpam_ttyconv_timeout to the length of the timeout in seconds.


RETURN VALUES

     The openpam_ttyconv function returns one of the following values:

     [PAM_BUF_ERR]       Memory buffer error.

     [PAM_CONV_ERR]      Conversation failure.

     [PAM_SYSTEM_ERR]    System error.


SEE ALSO

     getpass(3), openpam_nullconv(3), pam(3), pam_prompt(3), pam_strerror(3),
     pam_vprompt(3)


STANDARDS

     The openpam_ttyconv function is an OpenPAM extension.


AUTHORS

     The openpam_ttyconv 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 5.0                     December 21, 2007                    NetBSD 5.0