pam_putenv.c revision 91094
191094Sdes/*- 291094Sdes * Copyright (c) 2002 Networks Associates Technologies, Inc. 391094Sdes * All rights reserved. 491094Sdes * 591094Sdes * This software was developed for the FreeBSD Project by ThinkSec AS and 691094Sdes * NAI Labs, the Security Research Division of Network Associates, Inc. 791094Sdes * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the 891094Sdes * 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 * 3491094Sdes * $Id$ 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 56 4791094Sdes * 4891094Sdes * Set the value of an environment variable 4991094Sdes */ 5091094Sdes 5191094Sdesint 5291094Sdespam_putenv(pam_handle_t *pamh, 5391094Sdes const char *namevalue) 5491094Sdes{ 5591094Sdes char **env, *p; 5691094Sdes int i; 5791094Sdes 5891094Sdes if (pamh == NULL) 5991094Sdes return (PAM_SYSTEM_ERR); 6091094Sdes 6191094Sdes /* sanity checks */ 6291094Sdes if (namevalue == NULL || (p = strchr(namevalue, '=')) == NULL) 6391094Sdes return (PAM_SYSTEM_ERR); 6491094Sdes 6591094Sdes /* see if the variable is already in the environment */ 6691094Sdes if ((i = openpam_findenv(pamh, namevalue, p - namevalue)) != -1) { 6791094Sdes if ((p = strdup(namevalue)) == NULL) 6891094Sdes return (PAM_BUF_ERR); 6991094Sdes free(pamh->env[i]); 7091094Sdes pamh->env[i] = p; 7191094Sdes return (PAM_SUCCESS); 7291094Sdes } 7391094Sdes 7491094Sdes /* grow the environment list if necessary */ 7591094Sdes if (pamh->env_count == pamh->env_size) { 7691094Sdes env = realloc(pamh->env, pamh->env_size * 2 + 1); 7791094Sdes if (env == NULL) 7891094Sdes return (PAM_BUF_ERR); 7991094Sdes pamh->env = env; 8091094Sdes pamh->env_size = pamh->env_size * 2 + 1; 8191094Sdes } 8291094Sdes 8391094Sdes /* add the variable at the end */ 8491094Sdes if ((pamh->env[pamh->env_count] = strdup(namevalue)) == NULL) 8591094Sdes return (PAM_BUF_ERR); 8691094Sdes ++pamh->env_count; 8791094Sdes return (PAM_SUCCESS); 8891094Sdes} 89