freebsd-skq/usr.sbin/dumpcis/readcis.h
Warner Losh 5066eaeb75 Add a number of sanity checks to the data that we're handling from the
CIS. Coverity has tagged it as tainted. While this data is more
trusted than your average data, we still need to do some basic
validation on it. Check ioctl return value to ensure we switch memory
targets between common and attribute as well as the lseek.

CID: 1210464, 1006640, 1006868, 1007292, 1009091, 1009822, 1009824
2018-01-05 07:09:40 +00:00

64 lines
2.2 KiB
C

/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 1995 Andrew McRae. 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.
* 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 ``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 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.
*
* $FreeBSD$
*/
struct tuple {
struct tuple *next;
unsigned char code;
unsigned char length;
unsigned char *data;
};
struct tuple_list {
struct tuple_list *next;
struct tuple *tuples;
off_t offs;
int flags;
};
struct tuple_info {
const char *name;
unsigned char code;
unsigned char length; /* 255 means variable length */
};
#define tpl32(tp) ((*((tp) + 3) << 24) | \
(*((tp) + 2) << 16) | \
(*((tp) + 1) << 8) | *(tp))
#define tpl24(tp) ((*((tp) + 2) << 16) | \
(*((tp) + 1) << 8) | *(tp))
#define tpl16(tp) ((*((tp) + 1) << 8) | *(tp))
void dumpcis(struct tuple_list *);
void freecis(struct tuple_list *);
struct tuple_list *readcis(int);
const char *tuple_name(unsigned char);
u_int parse_num(int, u_char *, u_char **, int);