pam_getenv.c revision 114536
191094Sdes/*- 292289Sdes * Copyright (c) 2002 Networks Associates Technology, Inc. 391094Sdes * All rights reserved. 491094Sdes * 591094Sdes * This software was developed for the FreeBSD Project by ThinkSec AS and 699158Sdes * Network Associates Laboratories, the Security Research Division of 799158Sdes * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 899158Sdes * ("CBOSS"), as part of the DARPA CHATS research program. 991094Sdes * 1091094Sdes * Redistribution and use in source and binary forms, with or without 1191094Sdes * modification, are permitted provided that the following conditions 1291094Sdes * are met: 1391094Sdes * 1. Redistributions of source code must retain the above copyright 1491094Sdes * notice, this list of conditions and the following disclaimer. 1591094Sdes * 2. Redistributions in binary form must reproduce the above copyright 1691094Sdes * notice, this list of conditions and the following disclaimer in the 1791094Sdes * documentation and/or other materials provided with the distribution. 1891094Sdes * 3. The name of the author may not be used to endorse or promote 1991094Sdes * products derived from this software without specific prior written 2091094Sdes * permission. 2191094Sdes * 2291094Sdes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 2391094Sdes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2491094Sdes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2591094Sdes * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2691094Sdes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2791094Sdes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2891094Sdes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2991094Sdes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3091094Sdes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3191094Sdes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3291094Sdes * SUCH DAMAGE. 3391094Sdes * 34114536Sdes * $P4: //depot/projects/openpam/lib/pam_getenv.c#13 $ 3591094Sdes */ 3691094Sdes 3791094Sdes#include <stdlib.h> 3891094Sdes#include <string.h> 3991094Sdes 4091094Sdes#include <security/pam_appl.h> 4191094Sdes 4291094Sdes#include "openpam_impl.h" 4391094Sdes 4491094Sdes/* 4591094Sdes * XSSO 4.2.1 4691094Sdes * XSSO 6 page 44 4791094Sdes * 4891094Sdes * Retrieve the value of a PAM environment variable 4991094Sdes */ 5091094Sdes 51114536Sdesconst char * 5291094Sdespam_getenv(pam_handle_t *pamh, 5391094Sdes const char *name) 5491094Sdes{ 55110558Sdes char *str; 5691094Sdes int i; 5791094Sdes 58110558Sdes ENTERS(name); 5991094Sdes if (pamh == NULL) 60108794Sdes RETURNS(NULL); 6191094Sdes if (name == NULL || strchr(name, '=') != NULL) 62108794Sdes RETURNS(NULL); 6391094Sdes if ((i = openpam_findenv(pamh, name, strlen(name))) == -1) 64108794Sdes RETURNS(NULL); 65110558Sdes for (str = pamh->env[i]; *str != '\0'; ++str) { 66110558Sdes if (*str == '=') { 67110558Sdes ++str; 68110558Sdes break; 69110558Sdes } 70110558Sdes } 71110558Sdes RETURNS(str); 7291094Sdes} 7391100Sdes 7491100Sdes/** 7591100Sdes * The =pam_getenv function returns the value of an environment variable. 7691100Sdes * Its semantics are similar to those of =getenv, but it accesses the PAM 7791100Sdes * context's environment list instead of the application's. 7891100Sdes * 7991100Sdes * >pam_getenvlist 8091100Sdes * >pam_putenv 8191100Sdes * >pam_setenv 8291100Sdes */ 83