1 /* $NetBSD: pam_getenv.c,v 1.2 2014/10/24 18:17:56 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2002-2003 Networks Associates Technology, Inc. 5 * Copyright (c) 2004-2011 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 * Id: pam_getenv.c 648 2013-03-05 17:54:27Z des 38 */ 39 40 #ifdef HAVE_CONFIG_H 41 # include "config.h" 42 #endif 43 44 #include <sys/cdefs.h> 45 __RCSID("$NetBSD: pam_getenv.c,v 1.2 2014/10/24 18:17:56 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 44 57 * 58 * Retrieve the value of a PAM environment variable 59 */ 60 61 const char * 62 pam_getenv(pam_handle_t *pamh, 63 const char *name) 64 { 65 char *str; 66 int i; 67 68 ENTERS(name); 69 if (pamh == NULL) 70 RETURNS(NULL); 71 if (name == NULL || strchr(name, '=') != NULL) 72 RETURNS(NULL); 73 if ((i = openpam_findenv(pamh, name, strlen(name))) < 0) 74 RETURNS(NULL); 75 for (str = pamh->env[i]; *str != '\0'; ++str) { 76 if (*str == '=') { 77 ++str; 78 break; 79 } 80 } 81 RETURNS(str); 82 } 83 84 /** 85 * The =pam_getenv function returns the value of an environment variable. 86 * Its semantics are similar to those of =getenv, but it accesses the PAM 87 * context's environment list instead of the application's. 88 * 89 * >pam_getenvlist 90 * >pam_putenv 91 * >pam_setenv 92 */ 93