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/* wtap-int.h
*
* $Id: wtap-int.h,v 1.5 2000/08/11 07:28:12 guy Exp $
*
* Wiretap Library
* Copyright (c) 1998 by Gilbert Ramirez <gram@xiexie.org>
*
* 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_INT_H__
#define __WTAP_INT_H__
#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>
#ifdef HAVE_LIBZ
#include "zlib.h"
#define FILE_T gzFile
#else /* No zLib */
#define FILE_T FILE *
#endif /* HAVE_LIBZ */
#include "wtap.h"
/* Information for a compressed Sniffer data stream. */
typedef struct {
unsigned char *buf; /* buffer into which we uncompress data */
size_t nbytes; /* number of bytes of data in that buffer */
int nextout; /* offset in that buffer of stream's current position */
long comp_offset; /* current offset in compressed data stream */
long uncomp_offset; /* current offset in uncompressed data stream */
} ngsniffer_comp_stream_t;
typedef struct {
double timeunit;
time_t start;
int is_atm;
ngsniffer_comp_stream_t seq; /* sequential access */
ngsniffer_comp_stream_t rand; /* random access */
GList *first_blob; /* list element for first blob */
GList *last_blob; /* list element for last blob */
GList *current_blob; /* list element for current blob */
} ngsniffer_t;
typedef struct {
gboolean byte_swapped;
int bchannel_prot[2]; /* For the V.120 heuristic */
} i4btrace_t;
typedef struct {
gboolean is_hpux_11;
} nettl_t;
typedef struct {
time_t start;
} lanalyzer_t;
typedef struct {
gboolean byte_swapped;
guint16 version_major;
guint16 version_minor;
} libpcap_t;
typedef struct {
time_t start_secs;
guint32 start_usecs;
guint8 version_major;
guint32 *frame_table;
int frame_table_size;
int current_frame;
} netmon_t;
typedef struct {
time_t start_time;
double timeunit;
double start_timestamp;
int wrapped;
int end_offset;
int version_major;
} netxray_t;
typedef struct {
time_t inittime;
int adjusted;
int seek_add;
} ascend_t;
typedef struct {
gboolean byteswapped;
} csids_t;
typedef int (*subtype_read_func)(struct wtap*, int*);
typedef int (*subtype_seek_read_func)(struct wtap*, int, union wtap_pseudo_header*,
guint8*, int);
struct wtap {
FILE_T fh;
int fd; /* File descriptor for cap file */
FILE_T random_fh; /* Secondary FILE_T for random access */
int file_type;
int snapshot_length;
struct Buffer *frame_buffer;
struct wtap_pkthdr phdr;
union wtap_pseudo_header pseudo_header;
long data_offset;
union {
libpcap_t *pcap;
lanalyzer_t *lanalyzer;
ngsniffer_t *ngsniffer;
i4btrace_t *i4btrace;
nettl_t *nettl;
netmon_t *netmon;
netxray_t *netxray;
ascend_t *ascend;
csids_t *csids;
} capture;
subtype_read_func subtype_read;
subtype_seek_read_func subtype_seek_read;
void (*subtype_sequential_close)(struct wtap*);
void (*subtype_close)(struct wtap*);
int file_encap; /* per-file, for those
file formats that have
per-file encapsulation
types */
};
struct wtap_dumper;
typedef gboolean (*subtype_write_func)(struct wtap_dumper*,
const struct wtap_pkthdr*, const union wtap_pseudo_header*,
const u_char*, int*);
typedef gboolean (*subtype_close_func)(struct wtap_dumper*, int*);
typedef struct {
gboolean first_frame;
time_t start;
} ngsniffer_dump_t;
typedef struct {
gboolean first_frame;
struct timeval start;
guint32 nframes;
} netxray_dump_t;
typedef struct {
gboolean got_first_record_time;
struct timeval first_record_time;
guint32 frame_table_offset;
guint32 *frame_table;
int frame_table_index;
int frame_table_size;
} netmon_dump_t;
struct wtap_dumper {
FILE* fh;
int file_type;
int snaplen;
int encap;
union {
void *opaque;
ngsniffer_dump_t *ngsniffer;
netmon_dump_t *netmon;
netxray_dump_t *netxray;
} dump;
subtype_write_func subtype_write;
subtype_close_func subtype_close;
};
/* Macros to byte-swap 32-bit and 16-bit quantities. */
#define BSWAP32(x) \
((((x)&0xFF000000)>>24) | \
(((x)&0x00FF0000)>>8) | \
(((x)&0x0000FF00)<<8) | \
(((x)&0x000000FF)<<24))
#define BSWAP16(x) \
((((x)&0xFF00)>>8) | \
(((x)&0x00FF)<<8))
/* Turn host-byte-order values into little-endian values. */
#ifdef WORDS_BIGENDIAN
#define htoles(s) ((guint16) \
((guint16)((s) & 0x00FF)<<8| \
(guint16)((s) & 0xFF00)>>8))
#define htolel(l) ((guint32)((l) & 0x000000FF)<<24| \
(guint32)((l) & 0x0000FF00)<<8| \
(guint32)((l) & 0x00FF0000)>>8| \
(guint32)((l) & 0xFF000000)>>24)
#else
#define htoles(s) (s)
#define htolel(l) (l)
#endif
/* 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 pletohl
#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_INT_H__ */
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