Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
207 lines
5.8 KiB
C
207 lines
5.8 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Copyright (c) 2005 Apple Computer, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* @APPLE_BSD_LICENSE_HEADER_START@
|
|
*
|
|
* 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. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
|
|
* its contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS 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 APPLE OR ITS 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.
|
|
*
|
|
* @APPLE_BSD_LICENSE_HEADER_END@
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
|
|
#include <bsm/libbsm.h>
|
|
#include <bsm/audit_uevents.h>
|
|
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <pwd.h>
|
|
#include <stdio.h>
|
|
#include <strings.h>
|
|
#include <unistd.h>
|
|
|
|
#include "login.h"
|
|
|
|
/*
|
|
* Audit data
|
|
*/
|
|
static au_tid_t tid;
|
|
|
|
/*
|
|
* The following tokens are included in the audit record for a successful
|
|
* login: header, subject, return.
|
|
*/
|
|
void
|
|
au_login_success(void)
|
|
{
|
|
token_t *tok;
|
|
int aufd;
|
|
au_mask_t aumask;
|
|
auditinfo_t auinfo;
|
|
uid_t uid = pwd->pw_uid;
|
|
gid_t gid = pwd->pw_gid;
|
|
pid_t pid = getpid();
|
|
int au_cond;
|
|
|
|
/* If we are not auditing, don't cut an audit record; just return. */
|
|
if (auditon(A_GETCOND, &au_cond, sizeof(au_cond)) < 0) {
|
|
if (errno == ENOSYS)
|
|
return;
|
|
errx(1, "could not determine audit condition");
|
|
}
|
|
if (au_cond == AUC_NOAUDIT)
|
|
return;
|
|
|
|
/* Compute and set the user's preselection mask. */
|
|
if (au_user_mask(pwd->pw_name, &aumask) == -1)
|
|
errx(1, "could not calculate audit mask");
|
|
|
|
/* Set the audit info for the user. */
|
|
auinfo.ai_auid = uid;
|
|
auinfo.ai_asid = pid;
|
|
bcopy(&tid, &auinfo.ai_termid, sizeof(auinfo.ai_termid));
|
|
bcopy(&aumask, &auinfo.ai_mask, sizeof(auinfo.ai_mask));
|
|
if (setaudit(&auinfo) != 0)
|
|
err(1, "setaudit failed");
|
|
|
|
if ((aufd = au_open()) == -1)
|
|
errx(1, "audit error: au_open() failed");
|
|
|
|
if ((tok = au_to_subject32(uid, geteuid(), getegid(), uid, gid, pid,
|
|
pid, &tid)) == NULL)
|
|
errx(1, "audit error: au_to_subject32() failed");
|
|
au_write(aufd, tok);
|
|
|
|
if ((tok = au_to_return32(0, 0)) == NULL)
|
|
errx(1, "audit error: au_to_return32() failed");
|
|
au_write(aufd, tok);
|
|
|
|
if (au_close(aufd, 1, AUE_login) == -1)
|
|
errx(1, "audit record was not committed.");
|
|
}
|
|
|
|
/*
|
|
* The following tokens are included in the audit record for failed
|
|
* login attempts: header, subject, text, return.
|
|
*/
|
|
void
|
|
au_login_fail(const char *errmsg, int na)
|
|
{
|
|
token_t *tok;
|
|
int aufd;
|
|
int au_cond;
|
|
uid_t uid;
|
|
gid_t gid;
|
|
pid_t pid = getpid();
|
|
|
|
/* If we are not auditing, don't cut an audit record; just return. */
|
|
if (auditon(A_GETCOND, &au_cond, sizeof(au_cond)) < 0) {
|
|
if (errno == ENOSYS)
|
|
return;
|
|
errx(1, "could not determine audit condition");
|
|
}
|
|
if (au_cond == AUC_NOAUDIT)
|
|
return;
|
|
|
|
if ((aufd = au_open()) == -1)
|
|
errx(1, "audit error: au_open() failed");
|
|
|
|
if (na) {
|
|
/*
|
|
* Non attributable event. Assuming that login is not called
|
|
* within a user's session => auid,asid == -1.
|
|
*/
|
|
if ((tok = au_to_subject32(-1, geteuid(), getegid(), -1, -1,
|
|
pid, -1, &tid)) == NULL)
|
|
errx(1, "audit error: au_to_subject32() failed");
|
|
} else {
|
|
/* We know the subject -- so use its value instead. */
|
|
uid = pwd->pw_uid;
|
|
gid = pwd->pw_gid;
|
|
if ((tok = au_to_subject32(uid, geteuid(), getegid(), uid,
|
|
gid, pid, pid, &tid)) == NULL)
|
|
errx(1, "audit error: au_to_subject32() failed");
|
|
}
|
|
au_write(aufd, tok);
|
|
|
|
/* Include the error message. */
|
|
if ((tok = au_to_text(errmsg)) == NULL)
|
|
errx(1, "audit error: au_to_text() failed");
|
|
au_write(aufd, tok);
|
|
|
|
if ((tok = au_to_return32(1, errno)) == NULL)
|
|
errx(1, "audit error: au_to_return32() failed");
|
|
au_write(aufd, tok);
|
|
|
|
if (au_close(aufd, 1, AUE_login) == -1)
|
|
errx(1, "audit error: au_close() was not committed");
|
|
}
|
|
|
|
/*
|
|
* The following tokens are included in the audit record for a logout:
|
|
* header, subject, return.
|
|
*/
|
|
void
|
|
audit_logout(void)
|
|
{
|
|
token_t *tok;
|
|
int aufd;
|
|
uid_t uid = pwd->pw_uid;
|
|
gid_t gid = pwd->pw_gid;
|
|
pid_t pid = getpid();
|
|
int au_cond;
|
|
|
|
/* If we are not auditing, don't cut an audit record; just return. */
|
|
if (auditon(A_GETCOND, &au_cond, sizeof(int)) < 0) {
|
|
if (errno == ENOSYS)
|
|
return;
|
|
errx(1, "could not determine audit condition");
|
|
}
|
|
if (au_cond == AUC_NOAUDIT)
|
|
return;
|
|
|
|
if ((aufd = au_open()) == -1)
|
|
errx(1, "audit error: au_open() failed");
|
|
|
|
/* The subject that is created (euid, egid of the current process). */
|
|
if ((tok = au_to_subject32(uid, geteuid(), getegid(), uid, gid, pid,
|
|
pid, &tid)) == NULL)
|
|
errx(1, "audit error: au_to_subject32() failed");
|
|
au_write(aufd, tok);
|
|
|
|
if ((tok = au_to_return32(0, 0)) == NULL)
|
|
errx(1, "audit error: au_to_return32() failed");
|
|
au_write(aufd, tok);
|
|
|
|
if (au_close(aufd, 1, AUE_logout) == -1)
|
|
errx(1, "audit record was not committed.");
|
|
}
|