1/* $NetBSD: pam_getenv.c,v 1.5 2023/06/30 21:46:21 christos Exp $ */ 2 3/*- 4 * Copyright (c) 2002-2003 Networks Associates Technology, Inc. 5 * Copyright (c) 2004-2019 Dag-Erling Sm��rgrav 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 38#ifdef HAVE_CONFIG_H 39# include "config.h" 40#endif 41 42#include <sys/cdefs.h> 43__RCSID("$NetBSD: pam_getenv.c,v 1.5 2023/06/30 21:46:21 christos Exp $"); 44 45#include <errno.h> 46#include <stdlib.h> 47#include <string.h> 48 49#include <security/pam_appl.h> 50 51#include "openpam_impl.h" 52 53/* 54 * XSSO 4.2.1 55 * XSSO 6 page 44 56 * 57 * Retrieve the value of a PAM environment variable 58 */ 59 60const char * 61pam_getenv(pam_handle_t *pamh, 62 const char *name) 63{ 64 size_t len; 65 int i; 66 67 ENTERS(name); 68 for (len = 0; name[len] != '\0'; ++len) { 69 if (name[len] == '=') { 70 errno = EINVAL; 71 RETURNS(NULL); 72 } 73 } 74 if ((i = openpam_findenv(pamh, name, len)) < 0) 75 RETURNS(NULL); 76 /* assert(pamh->env[i][len] == '='); */ 77 RETURNS(pamh->env[i] + len + 1); 78} 79 80/** 81 * The =pam_getenv function returns the value of an environment variable. 82 * Its semantics are similar to those of =getenv, but it accesses the PAM 83 * context's environment list instead of the application's. 84 * 85 * >pam_getenvlist 86 * >pam_putenv 87 * >pam_setenv 88 */ 89