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wireshark/wiretap/wtap-int.h

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/* wtap-int.h
*
* $Id$
*
* Wiretap Library
* Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.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_INT_H__
#define __WTAP_INT_H__
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <glib.h>
#include <stdio.h>
#include <time.h>
#ifdef HAVE_WINSOCK2_H
#include <winsock2.h>
#endif
#ifdef HAVE_LIBZ
#include <zlib.h>
#define FILE_T gzFile
#else /* No zLib */
#define FILE_T FILE *
#endif /* HAVE_LIBZ */
#include "wtap.h"
typedef gboolean (*subtype_read_func)(struct wtap*, int*, char**, gint64*);
typedef gboolean (*subtype_seek_read_func)(struct wtap*, gint64, union wtap_pseudo_header*,
guint8*, int, int *, char **);
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;
gint64 data_offset;
void *priv;
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 */
int tsprecision; /* timestamp precision of the lower 32bits
* e.g. WTAP_FILE_TSPREC_USEC */
wtap_new_ipv4_callback_t add_new_ipv4;
wtap_new_ipv6_callback_t add_new_ipv6;
};
struct wtap_dumper;
typedef gboolean (*subtype_write_func)(struct wtap_dumper*,
const struct wtap_pkthdr*, const union wtap_pseudo_header*,
const guchar*, int*);
typedef gboolean (*subtype_close_func)(struct wtap_dumper*, int*);
struct wtap_dumper {
FILE* fh;
int file_type;
int snaplen;
int encap;
gboolean compressed;
gint64 bytes_dumped;
void *priv;
subtype_write_func subtype_write;
subtype_close_func subtype_close;
int tsprecision; /* timestamp precision of the lower 32bits
* e.g. WTAP_FILE_TSPREC_USEC */
struct addrinfo *addrinfo_list;
};
extern gboolean wtap_dump_file_write(wtap_dumper *wdh, const void *buf,
size_t bufsize, int *err);
extern gint64 wtap_dump_file_seek(wtap_dumper *wdh, gint64 offset, int whence, int *err);
extern gint64 wtap_dump_file_tell(wtap_dumper *wdh);
extern gint wtap_num_file_types;
/* Macros to byte-swap 64-bit, 32-bit and 16-bit quantities. */
#define BSWAP64(x) \
((((x)&G_GINT64_CONSTANT(0xFF00000000000000U))>>56) | \
(((x)&G_GINT64_CONSTANT(0x00FF000000000000U))>>40) | \
(((x)&G_GINT64_CONSTANT(0x0000FF0000000000U))>>24) | \
(((x)&G_GINT64_CONSTANT(0x000000FF00000000U))>>8) | \
(((x)&G_GINT64_CONSTANT(0x00000000FF000000U))<<8) | \
(((x)&G_GINT64_CONSTANT(0x0000000000FF0000U))<<24) | \
(((x)&G_GINT64_CONSTANT(0x000000000000FF00U))<<40) | \
(((x)&G_GINT64_CONSTANT(0x00000000000000FFU))<<56))
#define BSWAP32(x) \
((((x)&0xFF000000)>>24) | \
(((x)&0x00FF0000)>>8) | \
(((x)&0x0000FF00)<<8) | \
(((x)&0x000000FF)<<24))
#define BSWAP16(x) \
((((x)&0xFF00)>>8) | \
(((x)&0x00FF)<<8))
/* Macros to byte-swap possibly-unaligned 64-bit, 32-bit and 16-bit quantities;
* they take a pointer to the quantity, and byte-swap it in place.
*/
#define PBSWAP64(p) \
{ \
guint8 tmp; \
tmp = (p)[7]; \
(p)[7] = (p)[0]; \
(p)[0] = tmp; \
tmp = (p)[6]; \
(p)[6] = (p)[1]; \
(p)[1] = tmp; \
tmp = (p)[5]; \
(p)[5] = (p)[2]; \
(p)[2] = tmp; \
tmp = (p)[4]; \
(p)[4] = (p)[3]; \
(p)[3] = tmp; \
}
#define PBSWAP32(p) \
{ \
guint8 tmp; \
tmp = (p)[3]; \
(p)[3] = (p)[0]; \
(p)[0] = tmp; \
tmp = (p)[2]; \
(p)[2] = (p)[1]; \
(p)[1] = tmp; \
}
#define PBSWAP16(p) \
{ \
guint8 tmp; \
tmp = (p)[1]; \
(p)[1] = (p)[0]; \
(p)[0] = tmp; \
}
/* Turn host-byte-order values into little-endian values. */
#define htoles(s) GUINT16_TO_LE(s)
#define htolel(l) GUINT32_TO_LE(l)
#define htolell(ll) GUINT64_TO_LE(ll)
/* 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.
* We also provide pntohll and pletohll, which extract 64-bit integral
* quantities.
*
* These will work regardless of the byte alignment of the pointer.
*/
#ifndef pntohs
#define pntohs(p) ((guint16) \
((guint16)*((const guint8 *)(p)+0)<<8| \
(guint16)*((const guint8 *)(p)+1)<<0))
#endif
#ifndef pntoh24
#define pntoh24(p) ((guint32)*((const guint8 *)(p)+0)<<16| \
(guint32)*((const guint8 *)(p)+1)<<8| \
(guint32)*((const guint8 *)(p)+2)<<0)
#endif
#ifndef pntohl
#define pntohl(p) ((guint32)*((const guint8 *)(p)+0)<<24| \
(guint32)*((const guint8 *)(p)+1)<<16| \
(guint32)*((const guint8 *)(p)+2)<<8| \
(guint32)*((const guint8 *)(p)+3)<<0)
#endif
#ifndef pntohll
#define pntohll(p) ((guint64)*((const guint8 *)(p)+0)<<56| \
(guint64)*((const guint8 *)(p)+1)<<48| \
(guint64)*((const guint8 *)(p)+2)<<40| \
(guint64)*((const guint8 *)(p)+3)<<32| \
(guint64)*((const guint8 *)(p)+4)<<24| \
(guint64)*((const guint8 *)(p)+5)<<16| \
(guint64)*((const guint8 *)(p)+6)<<8| \
(guint64)*((const guint8 *)(p)+7)<<0)
#endif
#ifndef pletohs
#define pletohs(p) ((guint16) \
((guint16)*((const guint8 *)(p)+1)<<8| \
(guint16)*((const guint8 *)(p)+0)<<0))
#endif
#ifndef pletoh24
#define pletoh24(p) ((guint32)*((const guint8 *)(p)+2)<<16| \
(guint32)*((const guint8 *)(p)+1)<<8| \
(guint32)*((const guint8 *)(p)+0)<<0)
#endif
#ifndef pletohl
#define pletohl(p) ((guint32)*((const guint8 *)(p)+3)<<24| \
(guint32)*((const guint8 *)(p)+2)<<16| \
(guint32)*((const guint8 *)(p)+1)<<8| \
(guint32)*((const guint8 *)(p)+0)<<0)
#endif
#ifndef pletohll
#define pletohll(p) ((guint64)*((const guint8 *)(p)+7)<<56| \
(guint64)*((const guint8 *)(p)+6)<<48| \
(guint64)*((const guint8 *)(p)+5)<<40| \
(guint64)*((const guint8 *)(p)+4)<<32| \
(guint64)*((const guint8 *)(p)+3)<<24| \
(guint64)*((const guint8 *)(p)+2)<<16| \
(guint64)*((const guint8 *)(p)+1)<<8| \
(guint64)*((const guint8 *)(p)+0)<<0)
#endif
/* Pointer routines to put items out in a particular byte order.
* These will work regardless of the byte alignment of the pointer.
*/
#ifndef phtons
#define phtons(p, v) \
{ \
(p)[0] = (guint8)((v) >> 8); \
(p)[1] = (guint8)((v) >> 0); \
}
#endif
#ifndef phton24
#define phton24(p, v) \
{ \
(p)[0] = (guint8)((v) >> 16); \
(p)[1] = (guint8)((v) >> 8); \
(p)[2] = (guint8)((v) >> 0); \
}
#endif
#ifndef phtonl
#define phtonl(p, v) \
{ \
(p)[0] = (guint8)((v) >> 24); \
(p)[1] = (guint8)((v) >> 16); \
(p)[2] = (guint8)((v) >> 8); \
(p)[3] = (guint8)((v) >> 0); \
}
#endif
#ifndef phtonll
#define phtonll(p, v) \
{ \
(p)[0] = (guint8)((v) >> 56); \
(p)[1] = (guint8)((v) >> 48); \
(p)[2] = (guint8)((v) >> 40); \
(p)[3] = (guint8)((v) >> 32); \
(p)[4] = (guint8)((v) >> 24); \
(p)[5] = (guint8)((v) >> 16); \
(p)[6] = (guint8)((v) >> 8); \
(p)[7] = (guint8)((v) >> 0); \
}
#endif
#ifndef pletonll
#define pletonll(p, v) \
{ \
(p)[0] = (guint8)((v) >> 0); \
(p)[1] = (guint8)((v) >> 8); \
(p)[2] = (guint8)((v) >> 16); \
(p)[3] = (guint8)((v) >> 24); \
(p)[4] = (guint8)((v) >> 32); \
(p)[5] = (guint8)((v) >> 40); \
(p)[6] = (guint8)((v) >> 48); \
(p)[7] = (guint8)((v) >> 56); \
}
#endif
#define wtap_file_read_unknown_bytes(target, num_bytes, fh, err) \
G_STMT_START \
{ \
int _bytes_read; \
_bytes_read = file_read((target), 1, (num_bytes), (fh)); \
if (_bytes_read != (int) (num_bytes)) { \
*(err) = file_error((fh)); \
return FALSE; \
} \
} \
G_STMT_END
#define wtap_file_read_expected_bytes(target, num_bytes, fh, err) \
G_STMT_START \
{ \
int _bytes_read; \
_bytes_read = file_read((target), 1, (num_bytes), (fh)); \
if (_bytes_read != (int) (num_bytes)) { \
*(err) = file_error((fh)); \
if (*(err) == 0 && _bytes_read > 0) { \
*(err) = WTAP_ERR_SHORT_READ; \
} \
return FALSE; \
} \
} \
G_STMT_END
/* glib doesn't have g_ptr_array_len of all things!*/
#ifndef g_ptr_array_len
#define g_ptr_array_len(a) ((a)->len)
#endif
#endif /* __WTAP_INT_H__ */
/*
* Editor modelines
*
* Local Variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* ex: set shiftwidth=8 tabstop=8 noexpandtab
* :indentSize=8:tabSize=8:noTabs=false:
*/
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