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/* wtap.h
*
* $Id: wtap.h,v 1.8 1998/12/17 06:39:13 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.
*
*/
/* 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
/* 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
#include <sys/types.h>
#include <sys/time.h>
#include <glib.h>
#include <stdio.h>
#include <buffer.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;
struct wtap_pkthdr {
struct timeval ts;
guint32 caplen;
guint32 len;
};
typedef void (*wtap_handler)(u_char*, const struct wtap_pkthdr*,
int, const u_char *);
struct wtap;
typedef int (*subtype_func)(struct wtap*);
typedef struct wtap {
FILE* fh;
int file_type;
int snapshot_length;
unsigned long frame_number;
unsigned long file_byte_offset;
Buffer frame_buffer;
struct wtap_pkthdr phdr;
union {
libpcap_t *pcap;
lanalyzer_t *lanalyzer;
ngsniffer_t *ngsniffer;
} capture;
subtype_func subtype_read;
int encapsulation;
} wtap;
wtap* wtap_open_offline(char *filename, int filetype);
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);
int wtap_encapsulation(wtap *wth); /* per file */
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.
*/
#define pntohs(p) ((guint16) \
((guint16)*((guint8 *)p+0)<<8| \
(guint16)*((guint8 *)p+1)<<0))
#define pntohl(p) ((guint32)*((guint8 *)p+0)<<24| \
(guint32)*((guint8 *)p+1)<<16| \
(guint32)*((guint8 *)p+2)<<8| \
(guint32)*((guint8 *)p+3)<<0)
#define pletohs(p) ((guint16) \
((guint16)*((guint8 *)p+1)<<8| \
(guint16)*((guint8 *)p+0)<<0))
#define pletohl(p) ((guint32)*((guint8 *)p+3)<<24| \
(guint32)*((guint8 *)p+2)<<16| \
(guint32)*((guint8 *)p+1)<<8| \
(guint32)*((guint8 *)p+0)<<0)
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