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freebsd-skq/contrib/tcpdump/tcp.h
Gleb Smirnoff 3340d77368 Update tcpdump to 4.9.0. 
It fixes many buffer overflow in different protocol parsers, but none of
them are critical, even in absense of Capsicum.

Security:	CVE-2016-7922, CVE-2016-7923, CVE-2016-7924, CVE-2016-7925
Security:	CVE-2016-7926, CVE-2016-7927, CVE-2016-7928, CVE-2016-7929
Security:	CVE-2016-7930, CVE-2016-7931, CVE-2016-7932, CVE-2016-7933
Security:	CVE-2016-7934, CVE-2016-7935, CVE-2016-7936, CVE-2016-7937
Security:	CVE-2016-7938, CVE-2016-7939, CVE-2016-7940, CVE-2016-7973
Security:	CVE-2016-7974, CVE-2016-7975, CVE-2016-7983, CVE-2016-7984
Security:	CVE-2016-7985, CVE-2016-7986, CVE-2016-7992, CVE-2016-7993
Security:	CVE-2016-8574, CVE-2016-8575, CVE-2017-5202, CVE-2017-5203
Security:	CVE-2017-5204, CVE-2017-5205, CVE-2017-5341, CVE-2017-5342
Security:	CVE-2017-5482, CVE-2017-5483, CVE-2017-5484, CVE-2017-5485
Security:	CVE-2017-5486
2017-02-01 20:26:42 +00:00

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/*
* Copyright (c) 1982, 1986, 1993
* The Regents of the University of California. 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University 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 THE REGENTS 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 REGENTS 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.
*
* @(#)tcp.h 8.1 (Berkeley) 6/10/93
*/
typedef uint32_t tcp_seq;
/*
* TCP header.
* Per RFC 793, September, 1981.
*/
struct tcphdr {
uint16_t th_sport; /* source port */
uint16_t th_dport; /* destination port */
tcp_seq th_seq; /* sequence number */
tcp_seq th_ack; /* acknowledgement number */
uint8_t th_offx2; /* data offset, rsvd */
uint8_t th_flags;
uint16_t th_win; /* window */
uint16_t th_sum; /* checksum */
uint16_t th_urp; /* urgent pointer */
} UNALIGNED;
#define TH_OFF(th) (((th)->th_offx2 & 0xf0) >> 4)
/* TCP flags */
#define TH_FIN 0x01
#define TH_SYN 0x02
#define TH_RST 0x04
#define TH_PUSH 0x08
#define TH_ACK 0x10
#define TH_URG 0x20
#define TH_ECNECHO 0x40 /* ECN Echo */
#define TH_CWR 0x80 /* ECN Cwnd Reduced */
#define TCPOPT_EOL 0
#define TCPOPT_NOP 1
#define TCPOPT_MAXSEG 2
#define TCPOLEN_MAXSEG 4
#define TCPOPT_WSCALE 3 /* window scale factor (rfc1323) */
#define TCPOPT_SACKOK 4 /* selective ack ok (rfc2018) */
#define TCPOPT_SACK 5 /* selective ack (rfc2018) */
#define TCPOPT_ECHO 6 /* echo (rfc1072) */
#define TCPOPT_ECHOREPLY 7 /* echo (rfc1072) */
#define TCPOPT_TIMESTAMP 8 /* timestamp (rfc1323) */
#define TCPOLEN_TIMESTAMP 10
#define TCPOLEN_TSTAMP_APPA (TCPOLEN_TIMESTAMP+2) /* appendix A */
#define TCPOPT_CC 11 /* T/TCP CC options (rfc1644) */
#define TCPOPT_CCNEW 12 /* T/TCP CC options (rfc1644) */
#define TCPOPT_CCECHO 13 /* T/TCP CC options (rfc1644) */
#define TCPOPT_SIGNATURE 19 /* Keyed MD5 (rfc2385) */
#define TCPOLEN_SIGNATURE 18
#define TCP_SIGLEN 16 /* length of an option 19 digest */
#define TCPOPT_SCPS 20 /* SCPS-TP (CCSDS 714.0-B-2) */
#define TCPOPT_UTO 28 /* tcp user timeout (rfc5482) */
#define TCPOLEN_UTO 4
#define TCPOPT_TCPAO 29 /* TCP authentication option (rfc5925) */
#define TCPOPT_MPTCP 30 /* MPTCP options */
#define TCPOPT_FASTOPEN 34 /* TCP Fast Open (rfc7413) */
#define TCPOPT_EXPERIMENT2 254 /* experimental headers (rfc4727) */
#define TCPOPT_TSTAMP_HDR \
(TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP)
#ifndef FTP_PORT
#define FTP_PORT 21
#endif
#ifndef SSH_PORT
#define SSH_PORT 22
#endif
#ifndef TELNET_PORT
#define TELNET_PORT 23
#endif
#ifndef SMTP_PORT
#define SMTP_PORT 25
#endif
#ifndef NAMESERVER_PORT
#define NAMESERVER_PORT 53
#endif
#ifndef HTTP_PORT
#define HTTP_PORT 80
#endif
#ifndef NETBIOS_NS_PORT
#define NETBIOS_NS_PORT 137 /* RFC 1001, RFC 1002 */
#endif
#ifndef NETBIOS_SSN_PORT
#define NETBIOS_SSN_PORT 139 /* RFC 1001, RFC 1002 */
#endif
#ifndef BGP_PORT
#define BGP_PORT 179
#endif
#ifndef RPKI_RTR_PORT
#define RPKI_RTR_PORT 323
#endif
#ifndef SMB_PORT
#define SMB_PORT 445
#endif
#ifndef RTSP_PORT
#define RTSP_PORT 554
#endif
#ifndef MSDP_PORT
#define MSDP_PORT 639
#endif
#ifndef LDP_PORT
#define LDP_PORT 646
#endif
#ifndef PPTP_PORT
#define PPTP_PORT 1723
#endif
#ifndef NFS_PORT
#define NFS_PORT 2049
#endif
#ifndef OPENFLOW_PORT_OLD
#define OPENFLOW_PORT_OLD 6633
#endif
#ifndef OPENFLOW_PORT_IANA
#define OPENFLOW_PORT_IANA 6653
#endif
#ifndef HTTP_PORT_ALT
#define HTTP_PORT_ALT 8080
#endif
#ifndef RTSP_PORT_ALT
#define RTSP_PORT_ALT 8554
#endif
#ifndef BEEP_PORT
#define BEEP_PORT 10288
#endif
#ifndef REDIS_PORT
#define REDIS_PORT 6379
#endif
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