xref: /netbsd-src/crypto/external/bsd/openssh/dist/getpeereid.c (revision 41768fc151975edf5da042dafee95bcbf07f4525)

/*	$NetBSD: getpeereid.c,v 1.5 2017/04/18 18:41:46 christos Exp $	*/

/*
 * Copyright (c) 2002 Damien Miller.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "includes.h"
#include "getpeereid.h"
#include <unistd.h>

__RCSID("$NetBSD: getpeereid.c,v 1.5 2017/04/18 18:41:46 christos Exp $");

#if defined(SO_PEERCRED)
int
getpeereid(int s, uid_t *euid, gid_t *gid)
{
	struct ucred cred;
	socklen_t len = sizeof(cred);

	if (getsockopt(s, SOL_SOCKET, SO_PEERCRED, &cred, &len) < 0)
		return (-1);
	*euid = cred.uid;
	*gid = cred.gid;

	return (0);
}
#else
int
getpeereid(int s, uid_t *euid, gid_t *gid)
{
	*euid = geteuid();
	*gid = getgid();

	return (0);
}
#endif /* defined(SO_PEERCRED) */