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 36 #ifdef HAVE_CONFIG_H 37 # include "config.h" 38 #endif 39 40 #include <sys/param.h> 41 42 #include <string.h> 43 44 #include <security/pam_appl.h> 45 46 #include "openpam_impl.h" 47 48 /* 49 * OpenPAM extension 50 * 51 * Returns the value of a module option 52 */ 53 54 const char * 55 openpam_get_option(pam_handle_t *pamh, 56 const char *option) 57 { 58 pam_chain_t *cur; 59 size_t len; 60 int i; 61 62 ENTERS(option); 63 if (pamh == NULL || pamh->current == NULL || option == NULL) 64 RETURNS(NULL); 65 cur = pamh->current; 66 len = strlen(option); 67 for (i = 0; i < cur->optc; ++i) { 68 if (strncmp(cur->optv[i], option, len) == 0) { 69 if (cur->optv[i][len] == '\0') 70 RETURNS(&cur->optv[i][len]); 71 else if (cur->optv[i][len] == '=') 72 RETURNS(&cur->optv[i][len + 1]); 73 } 74 } 75 RETURNS(NULL); 76 } 77 78 /** 79 * The =openpam_get_option function returns the value of the specified 80 * option in the context of the currently executing service module, or 81 * =NULL if the option is not set or no module is currently executing. 82 * 83 * >openpam_set_option 84 */ 85