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/* @(#) $Header: /home/cvs/wifitools/wifipcap/tcp.h,v 1.1.1.1 2006/12/14 01:22:11 jpang Exp $ (LBL) */
/*
* 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
*/
#ifndef TCP_H
#define TCP_H
typedef u_int32_t tcp_seq;
/*
* TCP header.
* Per RFC 793, September, 1981.
*/
struct tcphdr {
u_int16_t th_sport; /* source port */
u_int16_t th_dport; /* destination port */
tcp_seq th_seq; /* sequence number */
tcp_seq th_ack; /* acknowledgement number */
u_int8_t th_offx2; /* data offset, rsvd */
#define TH_OFF(th) (((th)->th_offx2 & 0xf0) >> 4)
u_int8_t th_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 */
u_int16_t th_win; /* window */
u_int16_t th_sum; /* checksum */
u_int16_t th_urp; /* urgent pointer */
};
#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_AUTH 20 /* Enhanced AUTH option */
#define TCPOPT_TSTAMP_HDR \
(TCPOPT_NOP<<24|TCPOPT_NOP<<16|TCPOPT_TIMESTAMP<<8|TCPOLEN_TIMESTAMP)
#include <map>
#include <list>
class tcp_opt_t {
tcp_opt_t &operator=(const tcp_opt_t &); // not implemented
public:
tcp_opt_t(const tcp_opt_t &t):type(t.type),len(t.len),data_raw(t.data_raw),data(t.data),data_sack(t.data_sack){};
tcp_opt_t():type(),len(),data_raw(),data(),data_sack(){};
u_int type;
u_int len;
const u_char *data_raw;
union {
u_int16_t mss;
u_int8_t wscale;
u_int32_t echo;
u_int32_t echoreply;
u_int32_t cc;
u_int32_t ccnew;
u_int32_t ccecho;
struct {
u_int32_t tsval;
u_int32_t tsecr;
} timestamp;
u_int8_t signature[TCP_SIGLEN];
} data;
std::list< std::pair<u_int32_t,u_int32_t> > data_sack;
};
/* Jeff: endian-fixed, fully decoded tcp header */
struct tcp_hdr_t {
u_int16_t sport; /* source port */
u_int16_t dport; /* destination port */
tcp_seq seq; /* sequence number */
tcp_seq ack; /* acknowledgement number */
u_int8_t dataoff; /* data offset */
u_int8_t flags; /* flags (see #defines under tcphdr::th_flags above) */
u_int16_t win; /* window */
u_int16_t cksum; /* checksum */
u_int16_t urgptr; /* urgent pointer */
//std::list<tcp_opt_t> opts;
};
#endif
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