contrib/openpam/lib/openpam_nullconv.c

   1 /*-
   2  * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
   3  * All rights reserved.
   4  *
   5  * This software was developed for the FreeBSD Project by ThinkSec AS and
   6  * Network Associates Laboratories, the Security Research Division of
   7  * Network Associates, Inc.  under DARPA/SPAWAR contract N66001-01-C-8035
   8  * ("CBOSS"), as part of the DARPA CHATS research program.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  * 3. The name of the author may not be used to endorse or promote
  19  *    products derived from this software without specific prior written
  20  *    permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  * $P4: //depot/projects/openpam/lib/openpam_nullconv.c#7 $
  35  */
  36
  37 #include <sys/types.h>
  38
  39 #include <security/pam_appl.h>
  40
  41 #include "openpam_impl.h"
  42
  43 /*
  44  * OpenPAM extension
  45  *
  46  * Null conversation function
  47  */
  48
  49 int
  50 openpam_nullconv(int n,
  51          const struct pam_message **msg,
  52          struct pam_response **resp,
  53          void *data)
  54 {
  55
  56         ENTER();
  57         (void)n;
  58         (void)msg;
  59         (void)resp;
  60         (void)data;
  61         RETURNC(PAM_CONV_ERR);
  62 }
  63
  64 /*
  65  * Error codes:
  66  *
  67  *      PAM_CONV_ERR
  68  */
  69
  70 /**
  71  * The =openpam_nullconv function is a null conversation function suitable
  72  * for applications that want to use PAM but don't support interactive
  73  * dialog with the user.
  74  * Such applications should set =PAM_AUTHTOK to whatever authentication
  75  * token they've obtained on their own before calling =pam_authenticate
  76  * and / or =pam_chauthtok, and their PAM configuration should specify the
  77  * ;use_first_pass option for all modules that require access to the
  78  * authentication token, to make sure they use =PAM_AUTHTOK rather than
  79  * try to query the user.
  80  *
  81  * >openpam_ttyconv
  82  * >pam_prompt
  83  * >pam_set_item
  84  * >pam_vprompt
  85  */