1 /* $NetBSD: openpam_nullconv.c,v 1.3 2017/05/06 19:50:09 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2002-2003 Networks Associates Technology, Inc. 5 * Copyright (c) 2004-2011 Dag-Erling Smørgrav 6 * All rights reserved. 7 * 8 * This software was developed for the FreeBSD Project by ThinkSec AS and 9 * Network Associates Laboratories, the Security Research Division of 10 * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 11 * ("CBOSS"), as part of the DARPA CHATS research program. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. The name of the author may not be used to endorse or promote 22 * products derived from this software without specific prior written 23 * permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * $OpenPAM: openpam_nullconv.c 938 2017-04-30 21:34:42Z des $ 38 */ 39 40 #ifdef HAVE_CONFIG_H 41 # include "config.h" 42 #endif 43 44 #include <sys/cdefs.h> 45 __RCSID("$NetBSD: openpam_nullconv.c,v 1.3 2017/05/06 19:50:09 christos Exp $"); 46 47 #include <sys/types.h> 48 49 #include <security/pam_appl.h> 50 51 #include "openpam_impl.h" 52 53 /* 54 * OpenPAM extension 55 * 56 * Null conversation function 57 */ 58 59 int 60 openpam_nullconv(int n, 61 const struct pam_message **msg, 62 struct pam_response **resp, 63 void *data) 64 { 65 66 ENTER(); 67 /*LINTED unused*/ 68 (void)n; 69 /*LINTED unused*/ 70 (void)msg; 71 /*LINTED unused*/ 72 (void)resp; 73 /*LINTED unused*/ 74 (void)data; 75 RETURNC(PAM_CONV_ERR); 76 } 77 78 /* 79 * Error codes: 80 * 81 * PAM_CONV_ERR 82 */ 83 84 /** 85 * The =openpam_nullconv function is a null conversation function suitable 86 * for applications that want to use PAM but don't support interactive 87 * dialog with the user. 88 * Such applications should set =PAM_AUTHTOK to whatever authentication 89 * token they've obtained on their own before calling =pam_authenticate 90 * and / or =pam_chauthtok, and their PAM configuration should specify the 91 * ;use_first_pass option for all modules that require access to the 92 * authentication token, to make sure they use =PAM_AUTHTOK rather than 93 * try to query the user. 94 * 95 * >openpam_ttyconv 96 * >pam_prompt 97 * >pam_set_item 98 * >pam_vprompt 99 */ 100