191094Sdes/*- 2115619Sdes * Copyright (c) 2002-2003 Networks Associates Technology, Inc. 3228690Sdes * Copyright (c) 2004-2011 Dag-Erling Sm��rgrav 491094Sdes * All rights reserved. 591094Sdes * 691094Sdes * This software was developed for the FreeBSD Project by ThinkSec AS and 799158Sdes * Network Associates Laboratories, the Security Research Division of 899158Sdes * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 999158Sdes * ("CBOSS"), as part of the DARPA CHATS research program. 1091094Sdes * 1191094Sdes * Redistribution and use in source and binary forms, with or without 1291094Sdes * modification, are permitted provided that the following conditions 1391094Sdes * are met: 1491094Sdes * 1. Redistributions of source code must retain the above copyright 1591094Sdes * notice, this list of conditions and the following disclaimer. 1691094Sdes * 2. Redistributions in binary form must reproduce the above copyright 1791094Sdes * notice, this list of conditions and the following disclaimer in the 1891094Sdes * documentation and/or other materials provided with the distribution. 1991094Sdes * 3. The name of the author may not be used to endorse or promote 2091094Sdes * products derived from this software without specific prior written 2191094Sdes * permission. 2291094Sdes * 2391094Sdes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 2491094Sdes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2591094Sdes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2691094Sdes * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2791094Sdes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2891094Sdes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2991094Sdes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3091094Sdes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3191094Sdes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3291094Sdes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3391094Sdes * SUCH DAMAGE. 3491094Sdes * 35255376Sdes * $Id: pam_start.c 648 2013-03-05 17:54:27Z des $ 3691094Sdes */ 3791094Sdes 38228690Sdes#ifdef HAVE_CONFIG_H 39228690Sdes# include "config.h" 40228690Sdes#endif 41228690Sdes 4291094Sdes#include <stdlib.h> 43228690Sdes#include <string.h> 44228690Sdes#include <unistd.h> 4591094Sdes 4691094Sdes#include <security/pam_appl.h> 4791094Sdes 4891094Sdes#include "openpam_impl.h" 49228690Sdes#include "openpam_strlcpy.h" 5091094Sdes 51228690Sdes#ifdef _SC_HOST_NAME_MAX 52228690Sdes#define HOST_NAME_MAX sysconf(_SC_HOST_NAME_MAX) 53228690Sdes#else 54228690Sdes#define HOST_NAME_MAX 1024 55228690Sdes#endif 56228690Sdes 5791094Sdes/* 5891094Sdes * XSSO 4.2.1 5991094Sdes * XSSO 6 page 89 6091094Sdes * 6191094Sdes * Initiate a PAM transaction 6291094Sdes */ 6391094Sdes 6491094Sdesint 6591094Sdespam_start(const char *service, 6691094Sdes const char *user, 6791094Sdes const struct pam_conv *pam_conv, 6891094Sdes pam_handle_t **pamh) 6991094Sdes{ 70228690Sdes char hostname[HOST_NAME_MAX + 1]; 7191094Sdes struct pam_handle *ph; 7291094Sdes int r; 7391094Sdes 74107937Sdes ENTER(); 7591094Sdes if ((ph = calloc(1, sizeof *ph)) == NULL) 76107937Sdes RETURNC(PAM_BUF_ERR); 7791094Sdes if ((r = pam_set_item(ph, PAM_SERVICE, service)) != PAM_SUCCESS) 7891094Sdes goto fail; 79228690Sdes if (gethostname(hostname, sizeof hostname) != 0) 80228690Sdes strlcpy(hostname, "localhost", sizeof hostname); 81228690Sdes if ((r = pam_set_item(ph, PAM_HOST, hostname)) != PAM_SUCCESS) 82228690Sdes goto fail; 8391094Sdes if ((r = pam_set_item(ph, PAM_USER, user)) != PAM_SUCCESS) 8491094Sdes goto fail; 8591094Sdes if ((r = pam_set_item(ph, PAM_CONV, pam_conv)) != PAM_SUCCESS) 8691094Sdes goto fail; 87228690Sdes if ((r = openpam_configure(ph, service)) != PAM_SUCCESS) 8891094Sdes goto fail; 8991094Sdes *pamh = ph; 9091094Sdes openpam_log(PAM_LOG_DEBUG, "pam_start(\"%s\") succeeded", service); 91107937Sdes RETURNC(PAM_SUCCESS); 92228690Sdesfail: 9391094Sdes pam_end(ph, r); 94107937Sdes RETURNC(r); 9591094Sdes} 9691094Sdes 9791100Sdes/* 9891100Sdes * Error codes: 9991100Sdes * 10094670Sdes * =openpam_configure 10191100Sdes * =pam_set_item 10291100Sdes * !PAM_SYMBOL_ERR 10391100Sdes * PAM_BUF_ERR 10491100Sdes */ 10591100Sdes 10691100Sdes/** 10791100Sdes * The =pam_start function creates and initializes a PAM context. 10891100Sdes * 10991100Sdes * The =service argument specifies the name of the policy to apply, and is 11091100Sdes * stored in the =PAM_SERVICE item in the created context. 11191100Sdes * 11291100Sdes * The =user argument specifies the name of the target user - the user the 11391100Sdes * created context will serve to authenticate. 11491100Sdes * It is stored in the =PAM_USER item in the created context. 11591100Sdes * 11691100Sdes * The =pam_conv argument points to a =struct pam_conv describing the 11799158Sdes * conversation function to use; see =pam_conv for details. 11891100Sdes * 11991100Sdes * >pam_get_item 12091100Sdes * >pam_set_item 12191100Sdes * >pam_end 12291100Sdes */ 123