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/*
* OpenVPN -- An application to securely tunnel IP networks
* over a single TCP/UDP port, with support for SSL/TLS-based
* session authentication and key exchange,
* packet encryption, packet authentication, and
* packet compression.
*
* Copyright (C) 2002-2021 OpenVPN Technologies, Inc. <sales@openvpn.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* 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 (see the file COPYING included with this
* distribution); if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef ENV_SET_H
#define ENV_SET_H
#include "argv.h"
#include "basic.h"
#include "buffer.h"
#include "common.h"
/*
* Handle environmental variable lists
*/
struct env_item {
char *string;
struct env_item *next;
};
struct env_set {
struct gc_arena *gc;
struct env_item *list;
};
/* set/delete environmental variable */
void setenv_str_ex(struct env_set *es,
const char *name,
const char *value,
const unsigned int name_include,
const unsigned int name_exclude,
const char name_replace,
const unsigned int value_include,
const unsigned int value_exclude,
const char value_replace);
void setenv_counter(struct env_set *es, const char *name, counter_type value);
void setenv_int(struct env_set *es, const char *name, int value);
void setenv_long_long(struct env_set *es, const char *name, long long value);
void setenv_str(struct env_set *es, const char *name, const char *value);
void setenv_str_safe(struct env_set *es, const char *name, const char *value);
void setenv_del(struct env_set *es, const char *name);
/**
* Store the supplied name value pair in the env_set. If the variable with the
* supplied name already exists, append _N to the name, starting at N=1.
*/
void setenv_str_incr(struct env_set *es, const char *name, const char *value);
void setenv_int_i(struct env_set *es, const char *name, const int value, const int i);
void setenv_str_i(struct env_set *es, const char *name, const char *value, const int i);
/* struct env_set functions */
struct env_set *env_set_create(struct gc_arena *gc);
void env_set_destroy(struct env_set *es);
bool env_set_del(struct env_set *es, const char *str);
void env_set_add(struct env_set *es, const char *str);
const char *env_set_get(const struct env_set *es, const char *name);
void env_set_print(int msglevel, const struct env_set *es);
void env_set_inherit(struct env_set *es, const struct env_set *src);
/* returns true if environmental variable name starts with 'password' */
static inline bool
is_password_env_var(const char *str)
{
return (strncmp(str, "password", 8) == 0);
}
/* returns true if environmental variable safe to print to log */
static inline bool
env_safe_to_print(const char *str)
{
#ifndef UNSAFE_DEBUG
if (is_password_env_var(str))
{
return false;
}
#endif
return true;
}
/* returns true if environmental variable may be passed to an external program */
bool env_allowed(const char *str);
const char **make_env_array(const struct env_set *es,
const bool check_allowed,
struct gc_arena *gc);
#endif /* ifndef ENV_SET_H */
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