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/* ip.h
*/
#ifndef _SENDIP_IP_H
#define _SENDIP_IP_H
/* IP HEADER
* Taken from glibc 2.2, and modified
*/
typedef struct {
#if __BYTE_ORDER == __LITTLE_ENDIAN
unsigned int header_len:4;
unsigned int version:4;
#elif __BYTE_ORDER == __BIG_ENDIAN
unsigned int version:4;
unsigned int header_len:4;
#else
# error "Please fix <bits/endian.h>"
#endif
u_int8_t tos;
u_int16_t tot_len;
u_int16_t id;
// FreeBSD automatically hotnses this, for some reason.
#if defined(__FreeBSD__) || defined(__FreeBSD)
u_int16_t res:1;
u_int16_t df:1;
u_int16_t mf:1;
u_int16_t frag_off:13;
#define IP_SET_FRAGOFF(ip,v) (ip)->frag_off=(v)
#elif __BYTE_ORDER == __LITTLE_ENDIAN
u_int16_t frag_off1:5;
u_int16_t mf:1;
u_int16_t df:1;
u_int16_t res:1;
u_int16_t frag_off2:8;
#define IP_SET_FRAGOFF(ip,v) {(ip)->frag_off1=((v)&0x1F00)>>8;(ip)->frag_off2=(v)&0x00FF;}
#elif __BYTE_ORDER == __BIG_ENDIAN
u_int16_t res:1;
u_int16_t df:1;
u_int16_t mf:1;
u_int16_t frag_off:13;
#define IP_SET_FRAGOFF(ip,v) (ip)->frag_off=(v)
#else
# error "Please fix <bits/endian.h>"
#endif
u_int8_t ttl;
u_int8_t protocol;
u_int16_t check;
u_int32_t saddr;
u_int32_t daddr;
} ip_header;
/* Defines for which parts have been modified
*/
#define IP_MOD_HEADERLEN (1)
#define IP_MOD_VERSION (1<<1)
#define IP_MOD_TOS (1<<2)
#define IP_MOD_TOTLEN (1<<3)
#define IP_MOD_ID (1<<4)
#define IP_MOD_RES (1<<5)
#define IP_MOD_DF (1<<6)
#define IP_MOD_MF (1<<7)
#define IP_MOD_FRAGOFF (1<<8)
#define IP_MOD_TTL (1<<9)
#define IP_MOD_PROTOCOL (1<<10)
#define IP_MOD_CHECK (1<<11)
#define IP_MOD_SADDR (1<<12)
#define IP_MOD_DADDR (1<<13)
/* Options
*/
sendip_option ip_opts[] = {
{"s",1,"Source IP address (see README)","127.0.0.1"},
{"d",1,"Destination IP address","Correct"},
{"h",1,"IP header length (see README)","Correct"},
{"v",1,"IP version (you almost definitely don't want to change this)","4"},
{"y",1,"IP type of service","0"},
{"l",1,"Total IP packet length (see README)","Correct"},
{"i",1,"IP packet ID (see README)","Random"},
{"fr",1,"IP reserved flag (see README)","0 (options are 0,1,r)"},
{"fd",1,"IP don't fragment flag (see README)","0 (options are 0,1,r)"},
{"fm",1,"IP more fragments flag (see README)","0 (options are 0,1,r)"},
{"f",1,"IP fragment offset","0"},
{"t",1,"IP time to live","255"},
{"p",1,"IP protocol","0, or set by underlying protocol"},
{"c",1,"IP checksum (see README)","Correct"},
{"onum",1,"IP option as string of hex bytes (length is always correct)","(no options)"},
{"oeol",0,"IP option: end of list",NULL},
{"onop",0,"IP option: no-op",NULL},
{"orr",1,"IP option: record route. Format: pointer:addr1:addr2:...",NULL},
{"ots",1,"IP option: timestamp. Format: pointer:overflow:flag:(ip1:)ts1:(ip2:)ts2:...",NULL},
{"olsr",1,"IP option: loose source route. Format: pointer:addr1:addr2:...",NULL},
{"osid",1,"IP option: stream identifier",NULL},
{"ossr",1,"IP option: strict source route. Format: pointer:addr1:addr2:...",NULL}
};
#endif /* _SENDIP_IP_H */
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