66 lines
1.5 KiB
C
66 lines
1.5 KiB
C
/* Copyright: (c) 2009-2010 by Robert David Graham */
|
|
#ifndef PREPROCESS_H
|
|
#define PREPROCESS_H
|
|
#include "massip-addr.h"
|
|
|
|
|
|
enum {
|
|
FOUND_NOTHING=0,
|
|
FOUND_ETHERNET,
|
|
FOUND_IPV4,
|
|
FOUND_IPV6,
|
|
FOUND_ICMP,
|
|
FOUND_TCP,
|
|
FOUND_UDP,
|
|
FOUND_SCTP,
|
|
FOUND_DNS,
|
|
FOUND_IPV6_HOP,
|
|
FOUND_8021Q,
|
|
FOUND_MPLS,
|
|
FOUND_WIFI_DATA,
|
|
FOUND_WIFI,
|
|
FOUND_RADIOTAP,
|
|
FOUND_PRISM,
|
|
FOUND_LLC,
|
|
FOUND_ARP,
|
|
FOUND_SLL, /* Linux SLL */
|
|
FOUND_OPROTO, /* some other IP protocol */
|
|
FOUND_IGMP,
|
|
FOUND_NDPv6,
|
|
};
|
|
struct PreprocessedInfo {
|
|
const unsigned char *mac_src;
|
|
const unsigned char *mac_dst;
|
|
const unsigned char *mac_bss;
|
|
unsigned ip_offset; /* 14 for normal Ethernet */
|
|
unsigned ip_version; /* 4 or 6 */
|
|
unsigned ip_protocol; /* 6 for TCP, 11 for UDP */
|
|
unsigned ip_length; /* length of total packet */
|
|
unsigned ip_ttl;
|
|
const unsigned char *_ip_src;
|
|
const unsigned char *_ip_dst;
|
|
ipaddress src_ip;
|
|
ipaddress dst_ip;
|
|
unsigned transport_offset; /* 34 for normal Ethernet */
|
|
unsigned transport_length;
|
|
union {
|
|
unsigned port_src;
|
|
unsigned opcode;
|
|
};
|
|
unsigned port_dst;
|
|
|
|
unsigned app_offset; /* start of TCP payload */
|
|
unsigned app_length; /* length of TCP payload */
|
|
|
|
int found;
|
|
int found_offset;
|
|
};
|
|
|
|
/**
|
|
* @return 1 if useful stuff found, 0 otherwise
|
|
*/
|
|
unsigned
|
|
preprocess_frame(const unsigned char *px, unsigned length, unsigned link_type, struct PreprocessedInfo *info);
|
|
|
|
#endif
|