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 * $OpenPAM: openpam_get_option.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 <string.h> 45 46 #include <security/pam_appl.h> 47 48 #include "openpam_impl.h" 49 50 /* 51 * OpenPAM extension 52 * 53 * Returns the value of a module option 54 */ 55 56 const char * 57 openpam_get_option(pam_handle_t *pamh, 58 const char *option) 59 { 60 pam_chain_t *cur; 61 size_t len; 62 int i; 63 64 ENTERS(option); 65 if (pamh == NULL || pamh->current == NULL || option == NULL) 66 RETURNS(NULL); 67 cur = pamh->current; 68 len = strlen(option); 69 for (i = 0; i < cur->optc; ++i) { 70 if (strncmp(cur->optv[i], option, len) == 0) { 71 if (cur->optv[i][len] == '\0') 72 RETURNS(&cur->optv[i][len]); 73 else if (cur->optv[i][len] == '=') 74 RETURNS(&cur->optv[i][len + 1]); 75 } 76 } 77 RETURNS(NULL); 78 } 79 80 /** 81 * The =openpam_get_option function returns the value of the specified 82 * option in the context of the currently executing service module, or 83 * =NULL if the option is not set or no module is currently executing. 84 * 85 * >openpam_set_option 86 */ 87