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/* tcp.h
*/
#ifndef _SENDIP_TCP_H
#define _SENDIP_TCP_H
#ifndef NULL
#define NULL (0L)
#endif
/* TCP HEADER
* Ripped straight out of glibc-2.2.2, modified for RFC22481
* Reproduced here to prevent nasty #defines on non-linux boxes
*/
typedef struct {
u_int16_t source;
u_int16_t dest;
u_int32_t seq;
u_int32_t ack_seq;
#if __BYTE_ORDER == __LITTLE_ENDIAN
u_int16_t res:4;
u_int16_t off:4;
u_int16_t fin:1;
u_int16_t syn:1;
u_int16_t rst:1;
u_int16_t psh:1;
u_int16_t ack:1;
u_int16_t urg:1;
u_int16_t cwr:1;
u_int16_t ecn:1;
#elif __BYTE_ORDER == __BIG_ENDIAN
u_int16_t off:4;
u_int16_t res:4;
u_int16_t ecn:1;
u_int16_t cwr:1;
u_int16_t urg:1;
u_int16_t ack:1;
u_int16_t psh:1;
u_int16_t rst:1;
u_int16_t syn:1;
u_int16_t fin:1;
#else
# error "Adjust your <bits/endian.h> defines"
#endif
u_int16_t window;
u_int16_t check;
u_int16_t urg_ptr;
} tcp_header;
/* Defines for which parts have been modified
*/
#define TCP_MOD_SOURCE 1
#define TCP_MOD_DEST 1<<1
#define TCP_MOD_SEQ 1<<2
#define TCP_MOD_ACKSEQ 1<<3
#define TCP_MOD_RES 1<<4
#define TCP_MOD_OFF 1<<5
#define TCP_MOD_FIN 1<<6
#define TCP_MOD_SYN 1<<7
#define TCP_MOD_RST 1<<8
#define TCP_MOD_PSH 1<<9
#define TCP_MOD_ACK 1<<10
#define TCP_MOD_URG 1<<11
#define TCP_MOD_ECN 1<<12
#define TCP_MOD_CWR 1<<13
#define TCP_MOD_WINDOW 1<<14
#define TCP_MOD_CHECK 1<<15
#define TCP_MOD_URGPTR 1<<16
/* Options
*/
sendip_option tcp_opts[] = {
{"s",1,"TCP source port","0"},
{"d",1,"TCP destination port","0"},
{"n",1,"TCP sequence number","Random"},
{"a",1,"TCP ack number","0"},
{"t",1,"TCP data offset","Correct"},
{"r",1,"TCP header reserved field EXCLUDING ECN and CWR bits","0"},
{"fe",1,"TCP ECN bit (rfc2481)","0 (options are 0,1,r)"},
{"fc",1,"TCP CWR bit (rfc2481)","0 (options are 0,1,r)"},
{"fu",1,"TCP URG bit","0, or 1 if -tu specified (options are 0,1,r)"},
{"fa",1,"TCP ACK bit","0, or 1 if -ta specified (options are 0,1,r)"},
{"fp",1,"TCP PSH bit","0 (options are 0,1,r)"},
{"fr",1,"TCP RST bit","0 (options are 0,1,r)"},
{"fs",1,"TCP SYN bit","1 (options are 0,1,r)"},
{"ff",1,"TCP FIN bit","0 (options are 0,1,r)"},
{"w",1,"TCP window size","65535"},
{"c",1,"TCP checksum","Correct"},
{"u",1,"TCP urgent pointer","0"},
{"onum",1,"TCP option as string of hex bytes (length is always correct)","(no options)"},
{"oeol",0,"TCP option: end of list", NULL },
{"onop",0,"TCP option: no op", NULL },
{"omss",1,"TCP option: maximum segment size", NULL },
{"owscale",1,"TCP option: window scale (rfc1323)", NULL },
{"osackok",0,"TCP option: allow selective ack (rfc2018)", NULL },
{"osack",1,"TCP option: selective ack (rfc2018), format is l_edge1:r_edge1,l_edge2:r_edge2...", NULL },
{"ots",1,"TCP option: timestamp (rfc1323), format is tsval:tsecr", NULL }
};
#endif /* _SENDIP_TCP_H */
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