107 lines
3.2 KiB
C
107 lines
3.2 KiB
C
/*-
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* Copyright (c) 2002 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed for the FreeBSD Project by ThinkSec AS and
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* Network Associates Laboratories, the Security Research Division of
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* Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
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* ("CBOSS"), as part of the DARPA CHATS research program.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $P4: //depot/projects/openpam/lib/pam_putenv.c#8 $
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <security/pam_appl.h>
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#include "openpam_impl.h"
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/*
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* XSSO 4.2.1
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* XSSO 6 page 56
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*
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* Set the value of an environment variable
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*/
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int
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pam_putenv(pam_handle_t *pamh,
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const char *namevalue)
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{
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char **env, *p;
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int i;
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if (pamh == NULL)
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return (PAM_SYSTEM_ERR);
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/* sanity checks */
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if (namevalue == NULL || (p = strchr(namevalue, '=')) == NULL)
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return (PAM_SYSTEM_ERR);
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/* see if the variable is already in the environment */
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if ((i = openpam_findenv(pamh, namevalue, p - namevalue)) != -1) {
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if ((p = strdup(namevalue)) == NULL)
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return (PAM_BUF_ERR);
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free(pamh->env[i]);
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pamh->env[i] = p;
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return (PAM_SUCCESS);
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}
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/* grow the environment list if necessary */
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if (pamh->env_count == pamh->env_size) {
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env = realloc(pamh->env,
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sizeof(char *) * (pamh->env_size * 2 + 1));
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if (env == NULL)
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return (PAM_BUF_ERR);
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pamh->env = env;
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pamh->env_size = pamh->env_size * 2 + 1;
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}
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/* add the variable at the end */
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if ((pamh->env[pamh->env_count] = strdup(namevalue)) == NULL)
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return (PAM_BUF_ERR);
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++pamh->env_count;
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return (PAM_SUCCESS);
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}
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/*
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* Error codes:
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*
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* PAM_SYSTEM_ERR
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* PAM_BUF_ERR
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*/
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/**
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* The =pam_putenv function sets a environment variable.
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* Its semantics are similar to those of =putenv, but it modifies the PAM
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* context's environment list instead of the application's.
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*
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* >pam_getenv
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* >pam_getenvlist
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* >pam_setenv
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*/
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