pam_getenv.c revision 228690
191094Sdes/*- 2115619Sdes * Copyright (c) 2002-2003 Networks Associates Technology, Inc. 3228690Sdes * Copyright (c) 2004-2011 Dag-Erling Sm��rgrav 491094Sdes * All rights reserved. 591094Sdes * 691094Sdes * This software was developed for the FreeBSD Project by ThinkSec AS and 799158Sdes * Network Associates Laboratories, the Security Research Division of 899158Sdes * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 999158Sdes * ("CBOSS"), as part of the DARPA CHATS research program. 1091094Sdes * 1191094Sdes * Redistribution and use in source and binary forms, with or without 1291094Sdes * modification, are permitted provided that the following conditions 1391094Sdes * are met: 1491094Sdes * 1. Redistributions of source code must retain the above copyright 1591094Sdes * notice, this list of conditions and the following disclaimer. 1691094Sdes * 2. Redistributions in binary form must reproduce the above copyright 1791094Sdes * notice, this list of conditions and the following disclaimer in the 1891094Sdes * documentation and/or other materials provided with the distribution. 1991094Sdes * 3. The name of the author may not be used to endorse or promote 2091094Sdes * products derived from this software without specific prior written 2191094Sdes * permission. 2291094Sdes * 2391094Sdes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 2491094Sdes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2591094Sdes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2691094Sdes * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2791094Sdes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2891094Sdes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2991094Sdes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3091094Sdes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3191094Sdes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3291094Sdes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3391094Sdes * SUCH DAMAGE. 3491094Sdes * 35228690Sdes * $Id: pam_getenv.c 437 2011-09-13 12:00:13Z des $ 3691094Sdes */ 3791094Sdes 38228690Sdes#ifdef HAVE_CONFIG_H 39228690Sdes# include "config.h" 40228690Sdes#endif 41228690Sdes 4291094Sdes#include <stdlib.h> 4391094Sdes#include <string.h> 4491094Sdes 4591094Sdes#include <security/pam_appl.h> 4691094Sdes 4791094Sdes#include "openpam_impl.h" 4891094Sdes 4991094Sdes/* 5091094Sdes * XSSO 4.2.1 5191094Sdes * XSSO 6 page 44 5291094Sdes * 5391094Sdes * Retrieve the value of a PAM environment variable 5491094Sdes */ 5591094Sdes 56114536Sdesconst char * 5791094Sdespam_getenv(pam_handle_t *pamh, 5891094Sdes const char *name) 5991094Sdes{ 60110558Sdes char *str; 6191094Sdes int i; 6291094Sdes 63110558Sdes ENTERS(name); 6491094Sdes if (pamh == NULL) 65108794Sdes RETURNS(NULL); 6691094Sdes if (name == NULL || strchr(name, '=') != NULL) 67108794Sdes RETURNS(NULL); 68115619Sdes if ((i = openpam_findenv(pamh, name, strlen(name))) < 0) 69108794Sdes RETURNS(NULL); 70110558Sdes for (str = pamh->env[i]; *str != '\0'; ++str) { 71110558Sdes if (*str == '=') { 72110558Sdes ++str; 73110558Sdes break; 74110558Sdes } 75110558Sdes } 76110558Sdes RETURNS(str); 7791094Sdes} 7891100Sdes 7991100Sdes/** 8091100Sdes * The =pam_getenv function returns the value of an environment variable. 8191100Sdes * Its semantics are similar to those of =getenv, but it accesses the PAM 8291100Sdes * context's environment list instead of the application's. 8391100Sdes * 8491100Sdes * >pam_getenvlist 8591100Sdes * >pam_putenv 8691100Sdes * >pam_setenv 8791100Sdes */ 88