1 /* $NetBSD: pam_set_data.c,v 1.4 2023/06/30 21:46:21 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2002-2003 Networks Associates Technology, Inc. 5 * Copyright (c) 2004-2017 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 38 #ifdef HAVE_CONFIG_H 39 # include "config.h" 40 #endif 41 42 #include <sys/cdefs.h> 43 __RCSID("$NetBSD: pam_set_data.c,v 1.4 2023/06/30 21:46:21 christos Exp $"); 44 45 #include <stdlib.h> 46 #include <string.h> 47 48 #include <security/pam_appl.h> 49 50 #include "openpam_impl.h" 51 52 /* 53 * XSSO 4.2.1 54 * XSSO 6 page 59 55 * 56 * Set module information 57 */ 58 59 int 60 pam_set_data(pam_handle_t *pamh, 61 const char *module_data_name, 62 void *data, 63 void (*cleanup)(pam_handle_t *pamh, 64 void *data, 65 int pam_end_status)) 66 { 67 pam_data_t *dp; 68 69 ENTERS(module_data_name); 70 for (dp = pamh->module_data; dp != NULL; dp = dp->next) { 71 if (strcmp(dp->name, module_data_name) == 0) { 72 if (dp->cleanup) 73 (dp->cleanup)(pamh, dp->data, PAM_SUCCESS); 74 dp->data = data; 75 dp->cleanup = cleanup; 76 RETURNC(PAM_SUCCESS); 77 } 78 } 79 if ((dp = malloc(sizeof *dp)) == NULL) 80 RETURNC(PAM_BUF_ERR); 81 if ((dp->name = strdup(module_data_name)) == NULL) { 82 FREE(dp); 83 RETURNC(PAM_BUF_ERR); 84 } 85 dp->data = data; 86 dp->cleanup = cleanup; 87 dp->next = pamh->module_data; 88 pamh->module_data = dp; 89 RETURNC(PAM_SUCCESS); 90 } 91 92 /* 93 * Error codes: 94 * 95 * PAM_SYSTEM_ERR 96 * PAM_BUF_ERR 97 */ 98 99 /** 100 * The =pam_set_data function associates a pointer to an opaque object 101 * with an arbitrary string specified by the =module_data_name argument, 102 * in the PAM context specified by the =pamh argument. 103 * 104 * If not =NULL, the =cleanup argument should point to a function 105 * responsible for releasing the resources associated with the object. 106 * 107 * This function and its counterpart =pam_get_data are useful for managing 108 * data that are meaningful only to a particular service module. 109 * 110 * >openpam_free_data 111 */ 112