1 /* $NetBSD: pam_set_data.c,v 1.3 2017/05/06 19:50:10 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 * $OpenPAM: pam_set_data.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: pam_set_data.c,v 1.3 2017/05/06 19:50:10 christos Exp $"); 46 47 #include <stdlib.h> 48 #include <string.h> 49 50 #include <security/pam_appl.h> 51 52 #include "openpam_impl.h" 53 54 /* 55 * XSSO 4.2.1 56 * XSSO 6 page 59 57 * 58 * Set module information 59 */ 60 61 int 62 pam_set_data(pam_handle_t *pamh, 63 const char *module_data_name, 64 void *data, 65 void (*cleanup)(pam_handle_t *pamh, 66 void *data, 67 int pam_end_status)) 68 { 69 pam_data_t *dp; 70 71 ENTERS(module_data_name); 72 for (dp = pamh->module_data; dp != NULL; dp = dp->next) { 73 if (strcmp(dp->name, module_data_name) == 0) { 74 if (dp->cleanup) 75 (dp->cleanup)(pamh, dp->data, PAM_SUCCESS); 76 dp->data = data; 77 dp->cleanup = cleanup; 78 RETURNC(PAM_SUCCESS); 79 } 80 } 81 if ((dp = malloc(sizeof *dp)) == NULL) 82 RETURNC(PAM_BUF_ERR); 83 if ((dp->name = strdup(module_data_name)) == NULL) { 84 FREE(dp); 85 RETURNC(PAM_BUF_ERR); 86 } 87 dp->data = data; 88 dp->cleanup = cleanup; 89 dp->next = pamh->module_data; 90 pamh->module_data = dp; 91 RETURNC(PAM_SUCCESS); 92 } 93 94 /* 95 * Error codes: 96 * 97 * PAM_SYSTEM_ERR 98 * PAM_BUF_ERR 99 */ 100 101 /** 102 * The =pam_set_data function associates a pointer to an opaque object 103 * with an arbitrary string specified by the =module_data_name argument, 104 * in the PAM context specified by the =pamh argument. 105 * 106 * If not =NULL, the =cleanup argument should point to a function 107 * responsible for releasing the resources associated with the object. 108 * 109 * This function and its counterpart =pam_get_data are useful for managing 110 * data that are meaningful only to a particular service module. 111 * 112 * >openpam_free_data 113 */ 114