/*      $OpenBSD: getpeereid.c,v 1.1 2010/07/01 19:15:30 deraadt Exp $  */

/*
 * Copyright (c) 2010 Theo de Raadt <deraadt@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>
#include <sys/socket.h>

int
getpeereid(int s, uid_t *euid, gid_t *egid)
{
        struct sockpeercred creds;
        socklen_t credslen = sizeof(creds);
        int error;

        error = getsockopt(s, SOL_SOCKET, SO_PEERCRED,
            &creds, &credslen);
        if (error)
                return (error);
        *euid = creds.uid;
        *egid = creds.gid;
        return (0);
}