mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-24 11:29:10 +00:00
76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/*-
|
|
* Copyright (C) 2005 Diomidis Spinellis. 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 AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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 <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/syslog.h>
|
|
|
|
#include "portald.h"
|
|
|
|
/*
|
|
* Set the process's credentials to those specified in user,
|
|
* saveing the existing ones in save.
|
|
* Return 0 on success, -1 (with errno set) on error.
|
|
*/
|
|
int
|
|
set_user_credentials(struct portal_cred *user, struct portal_cred *save)
|
|
{
|
|
save->pcr_uid = geteuid();
|
|
if ((save->pcr_ngroups = getgroups(NGROUPS_MAX, save->pcr_groups)) < 0)
|
|
return (-1);
|
|
if (setgroups(user->pcr_ngroups, user->pcr_groups) < 0)
|
|
return (-1);
|
|
if (seteuid(user->pcr_uid) < 0)
|
|
return (-1);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Restore the process's credentials to the ones specified in save.
|
|
* Log failures using LOG_ERR.
|
|
* Return 0 on success, -1 (with errno set) on error.
|
|
*/
|
|
int
|
|
restore_credentials(struct portal_cred *save)
|
|
{
|
|
if (seteuid(save->pcr_uid) < 0) {
|
|
syslog(LOG_ERR, "seteuid: %m");
|
|
return (-1);
|
|
}
|
|
if (setgroups(save->pcr_ngroups, save->pcr_groups) < 0) {
|
|
syslog(LOG_ERR, "setgroups: %m");
|
|
return (-1);
|
|
}
|
|
return (0);
|
|
}
|