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/*
* Copyright (C) 2013 Nikos Mavrogiannopoulos
*
* This file is part of ocserv.
*
* ocserv 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 3 of the License, or
* (at your option) any later version.
*
* ocserv 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, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
/* needed for struct ucred */
#if defined(__linux__) && !defined(_GNU_SOURCE)
#define _GNU_SOURCE
#endif
#include "unix-peer.h"
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/uio.h>
#include <sys/errno.h>
/* Returns the unix domain socket peer information.
* Returns zero on success.
*/
int
p11_get_upeer_id (int cfd, uid_t *uid, uid_t *gid, pid_t *pid)
{
int ret;
#if defined(SO_PEERCRED)
struct ucred cr;
socklen_t cr_len;
cr_len = sizeof (cr);
ret = getsockopt (cfd, SOL_SOCKET, SO_PEERCRED, &cr, &cr_len);
if (ret == -1)
return -1;
if (uid)
*uid = cr.uid;
if (gid)
*gid = cr.gid;
if (pid)
*pid = cr.pid;
#elif defined(HAVE_GETPEEREID)
/* *BSD/MacOSX */
uid_t euid;
gid_t egid;
ret = getpeereid (cfd, &euid, &egid);
if (ret == -1)
return -1;
if (uid)
*uid = euid;
if (gid)
*gid = egid;
if (pid)
*pid = -1;
#else
#error "Unsupported UNIX variant"
#endif
return 0;
}
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