pam_getenv.c revision 110558 
11573Srgrimes/*-
21573Srgrimes * Copyright (c) 2002 Networks Associates Technology, Inc.
31573Srgrimes * All rights reserved.
41573Srgrimes *
51573Srgrimes * This software was developed for the FreeBSD Project by ThinkSec AS and
61573Srgrimes * Network Associates Laboratories, the Security Research Division of
71573Srgrimes * Network Associates, Inc.  under DARPA/SPAWAR contract N66001-01-C-8035
81573Srgrimes * ("CBOSS"), as part of the DARPA CHATS research program.
91573Srgrimes *
101573Srgrimes * Redistribution and use in source and binary forms, with or without
111573Srgrimes * modification, are permitted provided that the following conditions
121573Srgrimes * are met:
131573Srgrimes * 1. Redistributions of source code must retain the above copyright
141573Srgrimes *    notice, this list of conditions and the following disclaimer.
151573Srgrimes * 2. Redistributions in binary form must reproduce the above copyright
161573Srgrimes *    notice, this list of conditions and the following disclaimer in the
171573Srgrimes *    documentation and/or other materials provided with the distribution.
181573Srgrimes * 3. The name of the author may not be used to endorse or promote
191573Srgrimes *    products derived from this software without specific prior written
201573Srgrimes *    permission.
211573Srgrimes *
221573Srgrimes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
231573Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
241573Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
251573Srgrimes * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
261573Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
271573Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
281573Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
291573Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
301573Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
311573Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
321573Srgrimes * SUCH DAMAGE.
3392986Sobrien *
3492986Sobrien * $P4: //depot/projects/openpam/lib/pam_getenv.c#12 $
351573Srgrimes */
361573Srgrimes
371573Srgrimes#include <stdlib.h>
3824927Sbde#include <string.h>
39171219Speter
4024927Sbde#include <security/pam_appl.h>
411573Srgrimes
421573Srgrimes#include "openpam_impl.h"
431573Srgrimes
441573Srgrimes/*
451573Srgrimes * XSSO 4.2.1
461573Srgrimes * XSSO 6 page 44
4724927Sbde *
481573Srgrimes * Retrieve the value of a PAM environment variable
491573Srgrimes */
501573Srgrimes
51171219Speterchar *
52171219Speterpam_getenv(pam_handle_t *pamh,
53171219Speter	const char *name)
54171219Speter{
551573Srgrimes	char *str;
56	int i;
57
58	ENTERS(name);
59	if (pamh == NULL)
60		RETURNS(NULL);
61	if (name == NULL || strchr(name, '=') != NULL)
62		RETURNS(NULL);
63	if ((i = openpam_findenv(pamh, name, strlen(name))) == -1)
64		RETURNS(NULL);
65	for (str = pamh->env[i]; *str != '\0'; ++str) {
66		if (*str == '=') {
67			++str;
68			break;
69		}
70	}
71	RETURNS(str);
72}
73
74/**
75 * The =pam_getenv function returns the value of an environment variable.
76 * Its semantics are similar to those of =getenv, but it accesses the PAM
77 * context's environment list instead of the application's.
78 *
79 * >pam_getenvlist
80 * >pam_putenv
81 * >pam_setenv
82 */
83