1 /*- 2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc. 3 * Copyright (c) 2004-2017 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 * $OpenPAM: pam_set_item.c 938 2017-04-30 21:34:42Z 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; 64 size_t nsize, osize; 65 66 ENTERI(item_type); 67 slot = &pamh->item[item_type]; 68 osize = nsize = 0; 69 switch (item_type) { 70 case PAM_SERVICE: 71 /* set once only, by pam_start() */ 72 if (*slot != NULL && item != NULL) 73 RETURNC(PAM_BAD_ITEM); 74 /* fall through */ 75 case PAM_USER: 76 case PAM_AUTHTOK: 77 case PAM_OLDAUTHTOK: 78 case PAM_TTY: 79 case PAM_RHOST: 80 case PAM_RUSER: 81 case PAM_USER_PROMPT: 82 case PAM_AUTHTOK_PROMPT: 83 case PAM_OLDAUTHTOK_PROMPT: 84 case PAM_HOST: 85 if (*slot != NULL) 86 osize = strlen(*slot) + 1; 87 if (item != NULL) 88 nsize = strlen(item) + 1; 89 break; 90 case PAM_REPOSITORY: 91 osize = nsize = sizeof(struct pam_repository); 92 break; 93 case PAM_CONV: 94 osize = nsize = sizeof(struct pam_conv); 95 break; 96 default: 97 RETURNC(PAM_BAD_ITEM); 98 } 99 if (*slot != NULL) { 100 memset(*slot, 0xd0, osize); 101 FREE(*slot); 102 } 103 if (item != NULL) { 104 if ((*slot = malloc(nsize)) == NULL) 105 RETURNC(PAM_BUF_ERR); 106 memcpy(*slot, item, nsize); 107 } else { 108 *slot = NULL; 109 } 110 RETURNC(PAM_SUCCESS); 111 } 112 113 /* 114 * Error codes: 115 * 116 * PAM_BAD_ITEM 117 * PAM_BUF_ERR 118 */ 119 120 /** 121 * The =pam_set_item function sets the item specified by the =item_type 122 * argument to a copy of the object pointed to by the =item argument. 123 * The item is stored in the PAM context specified by the =pamh argument. 124 * See =pam_get_item for a list of recognized item types. 125 */ 126