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/* wtap.h
*
* $Id: wtap.h,v 1.20 1999/07/13 02:53:26 gram Exp $
*
* Wiretap Library
* Copyright (c) 1998 by Gilbert Ramirez <gram@verdict.uthscsa.edu>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#ifndef __WTAP_H__
#define __WTAP_H__
/* Encapsulation types. Choose names that truly reflect
* what is contained in the packet trace file. */
#define WTAP_ENCAP_NONE 0
#define WTAP_ENCAP_ETHERNET 1
#define WTAP_ENCAP_TR 2
#define WTAP_ENCAP_SLIP 3
#define WTAP_ENCAP_PPP 4
#define WTAP_ENCAP_FDDI 5
#define WTAP_ENCAP_RAW_IP 6
#define WTAP_ENCAP_ARCNET 7
#define WTAP_ENCAP_ATM_RFC1483 8
/* last WTAP_ENCAP_ value + 1 */
#define WTAP_NUM_ENCAP_TYPES 9
/* File types that can be read by wiretap */
#define WTAP_FILE_UNKNOWN 0
#define WTAP_FILE_WTAP 1
#define WTAP_FILE_PCAP 2
#define WTAP_FILE_LANALYZER 3
#define WTAP_FILE_NGSNIFFER 4
#define WTAP_FILE_SNOOP 6
#define WTAP_FILE_IPTRACE 7
#define WTAP_FILE_NETMON 8
#define WTAP_FILE_NETXRAY 9
/* Filter types that wiretap can create. An 'offline' filter is really
* a BPF filter, but it is treated specially because wiretap might not know
* in advance the datalink type(s) needed.
*/
#define WTAP_FILTER_NONE 0
#define WTAP_FILTER_OFFLINE 1
#define WTAP_FILTER_BPF 2
#include <sys/types.h>
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_WINSOCK_H
#include <winsock.h>
#endif
#include <glib.h>
#include <stdio.h>
typedef struct {
double timeunit;
time_t start;
guint16 pkt_len;
guint16 size;
guint16 true_size;
double t;
int is_atm;
} ngsniffer_t;
typedef struct {
guint16 pkt_len;
guint32 totpktt;
time_t start;
} lanalyzer_t;
typedef struct {
int byte_swapped;
guint16 version_major;
guint16 version_minor;
} libpcap_t;
typedef struct {
time_t start_secs;
guint32 start_usecs;
guint8 version_major;
int end_offset;
} netmon_t;
typedef struct {
time_t start_time;
double timeunit;
double start_timestamp;
int wrapped;
int end_offset;
int version_major;
} netxray_t;
struct wtap_pkthdr {
struct timeval ts;
guint32 caplen;
guint32 len;
int pkt_encap;
};
typedef void (*wtap_handler)(u_char*, const struct wtap_pkthdr*,
int, const u_char *);
struct wtap;
struct bpf_instruction;
struct Buffer;
typedef int (*subtype_func)(struct wtap*);
typedef struct wtap {
FILE* fh;
int file_type;
int snapshot_length;
struct Buffer *frame_buffer;
struct wtap_pkthdr phdr;
union {
libpcap_t *pcap;
lanalyzer_t *lanalyzer;
ngsniffer_t *ngsniffer;
netmon_t *netmon;
netxray_t *netxray;
} capture;
subtype_func subtype_read;
int file_encap; /* per-file, for those
file formats that have
per-file encapsulation
types */
} wtap;
wtap* wtap_open_offline(char *filename);
void wtap_loop(wtap *wth, int, wtap_handler, u_char*);
FILE* wtap_file(wtap *wth);
int wtap_snapshot_length(wtap *wth); /* per file */
int wtap_file_type(wtap *wth);
void wtap_close(wtap *wth);
/* Pointer versions of ntohs and ntohl. Given a pointer to a member of a
* byte array, returns the value of the two or four bytes at the pointer.
* The pletoh[sl] versions return the little-endian representation.
*/
#ifndef pntohs
#define pntohs(p) ((guint16) \
((guint16)*((guint8 *)p+0)<<8| \
(guint16)*((guint8 *)p+1)<<0))
#endif
#ifndef pntohl
#define pntohl(p) ((guint32)*((guint8 *)p+0)<<24| \
(guint32)*((guint8 *)p+1)<<16| \
(guint32)*((guint8 *)p+2)<<8| \
(guint32)*((guint8 *)p+3)<<0)
#endif
#ifndef phtons
#define phtons(p) ((guint16) \
((guint16)*((guint8 *)p+0)<<8| \
(guint16)*((guint8 *)p+1)<<0))
#endif
#ifndef phtonl
#define phtonl(p) ((guint32)*((guint8 *)p+0)<<24| \
(guint32)*((guint8 *)p+1)<<16| \
(guint32)*((guint8 *)p+2)<<8| \
(guint32)*((guint8 *)p+3)<<0)
#endif
#ifndef pletohs
#define pletohs(p) ((guint16) \
((guint16)*((guint8 *)p+1)<<8| \
(guint16)*((guint8 *)p+0)<<0))
#endif
#ifndef plethol
#define pletohl(p) ((guint32)*((guint8 *)p+3)<<24| \
(guint32)*((guint8 *)p+2)<<16| \
(guint32)*((guint8 *)p+1)<<8| \
(guint32)*((guint8 *)p+0)<<0)
#endif
#endif /* __WTAP_H__ */
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