[lttng-tools.git] / src / common / compat / getenv.hpp

#ifndef _COMPAT_GETENV_H
#define _COMPAT_GETENV_H

/*
 * Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * SPDX-License-Identifier: LGPL-2.1-only
 *
 */

#include <common/error.hpp>

#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>

static inline int lttng_is_setuid_setgid()
{
	return geteuid() != getuid() || getegid() != getgid();
}

static inline char *lttng_secure_getenv(const char *name)
{
	if (lttng_is_setuid_setgid()) {
		WARN("Getting environment variable '%s' from setuid/setgid binary refused for security reasons.",
		     name);
		return nullptr;
	}
	return getenv(name);
}

#endif /* _COMPAT_GETENV_H */
Commit	Line	Data
	1	#ifndef _COMPAT_GETENV_H
	2	#define _COMPAT_GETENV_H
	3
	4	/*
	5	* Copyright (C) 2015 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	6	*
	7	* SPDX-License-Identifier: LGPL-2.1-only
	8	*
	9	*/
	10
	11	#include <common/error.hpp>
	12
	13	#include <stdlib.h>
	14	#include <sys/types.h>
	15	#include <unistd.h>
	16
	17	static inline int lttng_is_setuid_setgid()
	18	{
	19	return geteuid() != getuid() \|\| getegid() != getgid();
	20	}
	21
	22	static inline char lttng_secure_getenv(const char name)
	23	{
	24	if (lttng_is_setuid_setgid()) {
	25	WARN("Getting environment variable '%s' from setuid/setgid binary refused for security reasons.",
	26	name);
	27	return nullptr;
	28	}
	29	return getenv(name);
	30	}
	31
	32	#endif /* _COMPAT_GETENV_H */