253 lines
7.2 KiB
C
253 lines
7.2 KiB
C
/* ftap-int.h
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*
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* $Id$
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*
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* Filetap Library
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* Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __FTAP_INT_H__
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#define __FTAP_INT_H__
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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#include <glib.h>
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#include <stdio.h>
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#include <time.h>
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#ifdef HAVE_WINSOCK2_H
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#include <winsock2.h>
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#endif
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#include <wsutil/file_util.h>
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#include "ftap.h"
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WS_DLL_PUBLIC
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int ftap_fstat(ftap *fth, ws_statb64 *statb, int *err);
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typedef gboolean (*subtype_read_func)(struct ftap*, int*, char**, gint64*);
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typedef gboolean (*subtype_seek_read_func)(struct ftap*, gint64,
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Buffer *buf,
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int, int *, char **);
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/**
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* Struct holding data of the currently read file.
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*/
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struct ftap {
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FILE_F fh;
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FILE_F random_fh; /**< Secondary FILE_T for random access */
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int file_type_subtype;
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guint snapshot_length;
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struct Buffer *frame_buffer;
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void *priv;
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subtype_read_func subtype_read;
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subtype_seek_read_func subtype_seek_read;
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void (*subtype_sequential_close)(struct ftap*);
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void (*subtype_close)(struct ftap*);
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int file_encap; /* per-file, for those
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* file formats that have
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* per-file encapsulation
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* types
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*/
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GPtrArray *fast_seek;
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};
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extern gint ftap_num_file_types;
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#include <wsutil/pint.h>
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/* Macros to byte-swap possibly-unaligned 64-bit, 32-bit and 16-bit quantities;
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* they take a pointer to the quantity, and byte-swap it in place.
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*/
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#define PBSWAP64(p) \
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{ \
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guint8 tmp; \
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tmp = (p)[7]; \
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(p)[7] = (p)[0]; \
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(p)[0] = tmp; \
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tmp = (p)[6]; \
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(p)[6] = (p)[1]; \
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(p)[1] = tmp; \
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tmp = (p)[5]; \
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(p)[5] = (p)[2]; \
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(p)[2] = tmp; \
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tmp = (p)[4]; \
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(p)[4] = (p)[3]; \
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(p)[3] = tmp; \
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}
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#define PBSWAP32(p) \
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{ \
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guint8 tmp; \
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tmp = (p)[3]; \
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(p)[3] = (p)[0]; \
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(p)[0] = tmp; \
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tmp = (p)[2]; \
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(p)[2] = (p)[1]; \
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(p)[1] = tmp; \
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}
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#define PBSWAP16(p) \
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{ \
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guint8 tmp; \
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tmp = (p)[1]; \
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(p)[1] = (p)[0]; \
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(p)[0] = tmp; \
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}
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/* Pointer routines to put items out in a particular byte order.
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* These will work regardless of the byte alignment of the pointer.
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*/
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#ifndef phtons
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#define phtons(p, v) \
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{ \
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(p)[0] = (guint8)((v) >> 8); \
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(p)[1] = (guint8)((v) >> 0); \
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}
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#endif
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#ifndef phton24
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#define phton24(p, v) \
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{ \
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(p)[0] = (guint8)((v) >> 16); \
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(p)[1] = (guint8)((v) >> 8); \
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(p)[2] = (guint8)((v) >> 0); \
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}
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#endif
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#ifndef phtonl
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#define phtonl(p, v) \
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{ \
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(p)[0] = (guint8)((v) >> 24); \
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(p)[1] = (guint8)((v) >> 16); \
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(p)[2] = (guint8)((v) >> 8); \
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(p)[3] = (guint8)((v) >> 0); \
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}
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#endif
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#ifndef phtonll
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#define phtonll(p, v) \
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{ \
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(p)[0] = (guint8)((v) >> 56); \
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(p)[1] = (guint8)((v) >> 48); \
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(p)[2] = (guint8)((v) >> 40); \
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(p)[3] = (guint8)((v) >> 32); \
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(p)[4] = (guint8)((v) >> 24); \
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(p)[5] = (guint8)((v) >> 16); \
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(p)[6] = (guint8)((v) >> 8); \
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(p)[7] = (guint8)((v) >> 0); \
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}
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#endif
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#ifndef phtoles
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#define phtoles(p, v) \
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{ \
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(p)[0] = (guint8)((v) >> 0); \
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(p)[1] = (guint8)((v) >> 8); \
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}
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#endif
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#ifndef phtolel
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#define phtolel(p, v) \
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{ \
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(p)[0] = (guint8)((v) >> 0); \
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(p)[1] = (guint8)((v) >> 8); \
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(p)[2] = (guint8)((v) >> 16); \
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(p)[3] = (guint8)((v) >> 24); \
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}
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#endif
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#ifndef phtolell
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#define phtolell(p, v) \
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{ \
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(p)[0] = (guint8)((v) >> 0); \
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(p)[1] = (guint8)((v) >> 8); \
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(p)[2] = (guint8)((v) >> 16); \
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(p)[3] = (guint8)((v) >> 24); \
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(p)[4] = (guint8)((v) >> 32); \
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(p)[5] = (guint8)((v) >> 40); \
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(p)[6] = (guint8)((v) >> 48); \
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(p)[7] = (guint8)((v) >> 56); \
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}
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#endif
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#define ftap_file_read_unknown_bytes(target, num_bytes, fh, err, err_info) \
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G_STMT_START \
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{ \
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int _bytes_read; \
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_bytes_read = file_read((target), (num_bytes), (fh)); \
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if (_bytes_read != (int) (num_bytes)) { \
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*(err) = file_error((fh), (err_info)); \
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return FALSE; \
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} \
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} \
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G_STMT_END
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#define ftap_file_read_expected_bytes(target, num_bytes, fh, err, err_info) \
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G_STMT_START \
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{ \
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int _bytes_read; \
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_bytes_read = file_read((target), (num_bytes), (fh)); \
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if (_bytes_read != (int) (num_bytes)) { \
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*(err) = file_error((fh), (err_info)); \
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if (*(err) == 0 && _bytes_read > 0) { \
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*(err) = FTAP_ERR_SHORT_READ; \
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} \
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return FALSE; \
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} \
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} \
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G_STMT_END
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/* glib doesn't have g_ptr_array_len of all things!*/
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#ifndef g_ptr_array_len
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#define g_ptr_array_len(a) ((a)->len)
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#endif
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/*** get GSList of all compressed file extensions ***/
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GSList *ftap_get_compressed_file_extensions(void);
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/*
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* Read packet data into a Buffer, growing the buffer as necessary.
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*
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* This returns an error on a short read, even if the short read hit
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* the EOF immediately. (The assumption is that each packet has a
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* header followed by raw packet data, and that we've already read the
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* header, so if we get an EOF trying to read the packet data, the file
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* has been cut short, even if the read didn't read any data at all.)
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*/
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gboolean
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ftap_read_packet_bytes(FILE_F fh, Buffer *buf, guint length, int *err,
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gchar **err_info);
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#endif /* __FTAP_INT_H__ */
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/*
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* Editor modelines
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*
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* Local Variables:
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* c-basic-offset: 8
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*
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* ex: set shiftwidth=8 tabstop=8 noexpandtab:
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* :indentSize=8:tabSize=8:noTabs=false:
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*/
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