pam_set_data.c revision 228690
1/*- 2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc. 3 * Copyright (c) 2004-2011 Dag-Erling Sm��rgrav 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_data.c 437 2011-09-13 12:00:13Z des $ 36 */ 37 38#ifdef HAVE_CONFIG_H 39# include "config.h" 40#endif 41 42#include <stdlib.h> 43#include <string.h> 44 45#include <security/pam_appl.h> 46 47#include "openpam_impl.h" 48 49/* 50 * XSSO 4.2.1 51 * XSSO 6 page 59 52 * 53 * Set module information 54 */ 55 56int 57pam_set_data(pam_handle_t *pamh, 58 const char *module_data_name, 59 void *data, 60 void (*cleanup)(pam_handle_t *pamh, 61 void *data, 62 int pam_end_status)) 63{ 64 pam_data_t *dp; 65 66 ENTERS(module_data_name); 67 if (pamh == NULL) 68 RETURNC(PAM_SYSTEM_ERR); 69 for (dp = pamh->module_data; dp != NULL; dp = dp->next) { 70 if (strcmp(dp->name, module_data_name) == 0) { 71 if (dp->cleanup) 72 (dp->cleanup)(pamh, dp->data, PAM_SUCCESS); 73 dp->data = data; 74 dp->cleanup = cleanup; 75 RETURNC(PAM_SUCCESS); 76 } 77 } 78 if ((dp = malloc(sizeof *dp)) == NULL) 79 RETURNC(PAM_BUF_ERR); 80 if ((dp->name = strdup(module_data_name)) == NULL) { 81 FREE(dp); 82 RETURNC(PAM_BUF_ERR); 83 } 84 dp->data = data; 85 dp->cleanup = cleanup; 86 dp->next = pamh->module_data; 87 pamh->module_data = dp; 88 RETURNC(PAM_SUCCESS); 89} 90 91/* 92 * Error codes: 93 * 94 * PAM_SYSTEM_ERR 95 * PAM_BUF_ERR 96 */ 97 98/** 99 * The =pam_set_data function associates a pointer to an opaque object 100 * with an arbitrary string specified by the =module_data_name argument, 101 * in the PAM context specified by the =pamh argument. 102 * 103 * If not =NULL, the =cleanup argument should point to a function 104 * responsible for releasing the resources associated with the object. 105 * 106 * This function and its counterpart =pam_get_data are useful for managing 107 * data that are meaningful only to a particular service module. 108 */ 109