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 * 35255376Sdes * $Id: pam_putenv.c 648 2013-03-05 17:54:27Z 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 56 5291094Sdes * 5391094Sdes * Set the value of an environment variable 5491094Sdes */ 5591094Sdes 5691094Sdesint 5791094Sdespam_putenv(pam_handle_t *pamh, 5891094Sdes const char *namevalue) 5991094Sdes{ 6091094Sdes char **env, *p; 6191094Sdes int i; 6291094Sdes 63107937Sdes ENTER(); 6491094Sdes if (pamh == NULL) 65107937Sdes RETURNC(PAM_SYSTEM_ERR); 6691094Sdes 6791094Sdes /* sanity checks */ 6891094Sdes if (namevalue == NULL || (p = strchr(namevalue, '=')) == NULL) 69107937Sdes RETURNC(PAM_SYSTEM_ERR); 7091094Sdes 7191094Sdes /* see if the variable is already in the environment */ 72115619Sdes if ((i = openpam_findenv(pamh, namevalue, p - namevalue)) >= 0) { 7391094Sdes if ((p = strdup(namevalue)) == NULL) 74107937Sdes RETURNC(PAM_BUF_ERR); 75115619Sdes FREE(pamh->env[i]); 7691094Sdes pamh->env[i] = p; 77107937Sdes RETURNC(PAM_SUCCESS); 7891094Sdes } 7991094Sdes 8091094Sdes /* grow the environment list if necessary */ 8191094Sdes if (pamh->env_count == pamh->env_size) { 8293694Sdes env = realloc(pamh->env, 8393694Sdes sizeof(char *) * (pamh->env_size * 2 + 1)); 8491094Sdes if (env == NULL) 85107937Sdes RETURNC(PAM_BUF_ERR); 8691094Sdes pamh->env = env; 8791094Sdes pamh->env_size = pamh->env_size * 2 + 1; 8891094Sdes } 8991094Sdes 9091094Sdes /* add the variable at the end */ 9191094Sdes if ((pamh->env[pamh->env_count] = strdup(namevalue)) == NULL) 92107937Sdes RETURNC(PAM_BUF_ERR); 9391094Sdes ++pamh->env_count; 94107937Sdes RETURNC(PAM_SUCCESS); 9591094Sdes} 9691100Sdes 9791100Sdes/* 9891100Sdes * Error codes: 9991100Sdes * 10091100Sdes * PAM_SYSTEM_ERR 10191100Sdes * PAM_BUF_ERR 10291100Sdes */ 10391100Sdes 10491100Sdes/** 105236099Sdes * The =pam_putenv function sets an environment variable. 10691100Sdes * Its semantics are similar to those of =putenv, but it modifies the PAM 10791100Sdes * context's environment list instead of the application's. 10891100Sdes * 10991100Sdes * >pam_getenv 11091100Sdes * >pam_getenvlist 11191100Sdes * >pam_setenv 11291100Sdes */ 113