87 lines
2.7 KiB
C
87 lines
2.7 KiB
C
|
/*-
|
||
|
|
* Copyright (c) 2002 Networks Associates Technology, Inc.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* This software was developed for the FreeBSD Project by ThinkSec AS and
|
||
|
|
* NAI Labs, the Security Research Division of Network Associates, Inc.
|
||
|
|
* under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
|
||
|
|
* DARPA CHATS research program.
|
||
|
|
*
|
||
|
|
* 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.
|
||
|
|
* 3. The name of the author may not be used to endorse or promote
|
||
|
|
* products derived from this software without specific prior written
|
||
|
|
* permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE 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 THE 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.
|
||
|
|
*
|
||
|
|
* $P4: //depot/projects/openpam/lib/openpam_restore_cred.c#1 $
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <sys/param.h>
|
||
|
|
|
||
|
|
#include <pwd.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
|
||
|
|
#include <security/pam_appl.h>
|
||
|
|
|
||
|
|
#include "openpam_impl.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
* OpenPAM extension
|
||
|
|
*
|
||
|
|
* Restore credentials
|
||
|
|
*/
|
||
|
|
|
||
|
|
int
|
||
|
|
openpam_restore_cred(pam_handle_t *pamh)
|
||
|
|
{
|
||
|
|
struct pam_saved_cred *scred;
|
||
|
|
int r;
|
||
|
|
|
||
|
|
r = pam_get_data(pamh, PAM_SAVED_CRED, (const void **)&scred);
|
||
|
|
if (r != PAM_SUCCESS)
|
||
|
|
return (r);
|
||
|
|
if (scred == NULL)
|
||
|
|
return (PAM_SYSTEM_ERR);
|
||
|
|
if (seteuid(scred->euid) == -1 ||
|
||
|
|
setgroups(scred->ngroups, scred->groups) == -1 ||
|
||
|
|
setegid(scred->egid) == -1)
|
||
|
|
return (PAM_SYSTEM_ERR);
|
||
|
|
pam_set_data(pamh, PAM_SAVED_CRED, NULL, NULL);
|
||
|
|
return (PAM_SUCCESS);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Error codes:
|
||
|
|
*
|
||
|
|
* =pam_get_data
|
||
|
|
* PAM_SYSTEM_ERR
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The =openpam_restore_cred function restores the credentials saved by
|
||
|
|
* =openpam_borrow_cred.
|
||
|
|
*
|
||
|
|
* >setegid
|
||
|
|
* >seteuid
|
||
|
|
* >setgroups
|
||
|
|
*/
|