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/*
* ProFTPD - FTP server daemon
* Copyright (c) 2007-2016 The ProFTPD Project team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA.
*
* As a special exemption, The ProFTPD Project team and other respective
* copyright holders give permission to link this program with OpenSSL, and
* distribute the resulting executable, without including the source code for
* OpenSSL in the source distribution.
*/
/* Environment handling */
#ifndef PR_ENV_H
#define PR_ENV_H
/* Returns the value of the environment variable named key, or NULL if no
* such value is present.
*/
char *pr_env_get(pool *p, const char *key);
/* Set an environment variable named key, with the given value. Returns
* zero if successful, or -1 (with errno set appropriately) if there was
* a problem.
*
* The memory of the strings in the environment are the responsibility of
* the caller; if allocating those strings from a memory pool, please be
* sure to use a pool of the proper lifetime.
*/
int pr_env_set(pool *p, const char *key, const char *value);
/* Clear the environment of any variables named key. Returns zero if
* successful, -1 otherwise (with errno set appropriately.
*/
int pr_env_unset(pool *p, const char *key);
#endif /* PR_ENV_H */
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