1 /*- 2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc. 3 * Copyright (c) 2004-2011 Dag-Erling Smørgrav 4 * All rights reserved. 5 * 6 * This software was developed for the FreeBSD Project by ThinkSec AS and 7 * Network Associates Laboratories, the Security Research Division of 8 * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 9 * ("CBOSS"), as part of the DARPA CHATS research program. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. The name of the author may not be used to endorse or promote 20 * products derived from this software without specific prior written 21 * permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * $Id: pam_set_item.c 648 2013-03-05 17:54:27Z des $ 36 */ 37 38 #ifdef HAVE_CONFIG_H 39 # include "config.h" 40 #endif 41 42 #include <sys/param.h> 43 44 #include <stdlib.h> 45 #include <string.h> 46 47 #include <security/pam_appl.h> 48 49 #include "openpam_impl.h" 50 51 /* 52 * XSSO 4.2.1 53 * XSSO 6 page 60 54 * 55 * Set authentication information 56 */ 57 58 int 59 pam_set_item(pam_handle_t *pamh, 60 int item_type, 61 const void *item) 62 { 63 void **slot, *tmp; 64 size_t nsize, osize; 65 66 ENTERI(item_type); 67 if (pamh == NULL) 68 RETURNC(PAM_SYSTEM_ERR); 69 slot = &pamh->item[item_type]; 70 osize = nsize = 0; 71 switch (item_type) { 72 case PAM_SERVICE: 73 /* set once only, by pam_start() */ 74 if (*slot != NULL) 75 RETURNC(PAM_SYSTEM_ERR); 76 /* fall through */ 77 case PAM_USER: 78 case PAM_AUTHTOK: 79 case PAM_OLDAUTHTOK: 80 case PAM_TTY: 81 case PAM_RHOST: 82 case PAM_RUSER: 83 case PAM_USER_PROMPT: 84 case PAM_AUTHTOK_PROMPT: 85 case PAM_OLDAUTHTOK_PROMPT: 86 case PAM_HOST: 87 if (*slot != NULL) 88 osize = strlen(*slot) + 1; 89 if (item != NULL) 90 nsize = strlen(item) + 1; 91 break; 92 case PAM_REPOSITORY: 93 osize = nsize = sizeof(struct pam_repository); 94 break; 95 case PAM_CONV: 96 osize = nsize = sizeof(struct pam_conv); 97 break; 98 default: 99 RETURNC(PAM_SYMBOL_ERR); 100 } 101 if (*slot != NULL) { 102 memset(*slot, 0xd0, osize); 103 FREE(*slot); 104 } 105 if (item != NULL) { 106 if ((tmp = malloc(nsize)) == NULL) 107 RETURNC(PAM_BUF_ERR); 108 memcpy(tmp, item, nsize); 109 } else { 110 tmp = NULL; 111 } 112 *slot = tmp; 113 RETURNC(PAM_SUCCESS); 114 } 115 116 /* 117 * Error codes: 118 * 119 * PAM_SYMBOL_ERR 120 * PAM_SYSTEM_ERR 121 * PAM_BUF_ERR 122 */ 123 124 /** 125 * The =pam_set_item function sets the item specified by the =item_type 126 * argument to a copy of the object pointed to by the =item argument. 127 * The item is stored in the PAM context specified by the =pamh argument. 128 * See =pam_get_item for a list of recognized item types. 129 */ 130