129 lines
4.0 KiB
C
129 lines
4.0 KiB
C
/* merge.h
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* Definitions for routines for merging files.
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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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 __MERGE_H__
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#define __MERGE_H__
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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typedef enum {
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PACKET_PRESENT,
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PACKET_NOT_PRESENT,
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AT_EOF,
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GOT_ERROR
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} in_file_state_e;
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/**
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* Structures to manage our input files.
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*/
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typedef struct merge_in_file_s {
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const char *filename;
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wtap *wth;
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gint64 data_offset;
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in_file_state_e state;
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guint32 packet_num; /* current packet number */
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gint64 size; /* file size */
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guint32 interface_id; /* identifier of the interface.
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* Used for fake interfaces when writing WTAP_ENCAP_PER_PACKET */
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} merge_in_file_t;
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/** Open a number of input files to merge.
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*
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* @param in_file_count number of entries in in_file_names and in_files
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* @param in_file_names filenames of the input files
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* @param in_files input file array to be filled (>= sizeof(merge_in_file_t) * in_file_count)
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* @param err wiretap error, if failed
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* @param err_info wiretap error string, if failed
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* @param err_fileno file on which open failed, if failed
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* @return TRUE if all files could be opened, FALSE otherwise
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*/
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extern gboolean
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merge_open_in_files(int in_file_count, char *const *in_file_names,
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merge_in_file_t **in_files, int *err, gchar **err_info,
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int *err_fileno);
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/** Close the input files again.
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*
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* @param in_file_count number of entries in in_files
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* @param in_files input file array to be closed
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*/
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extern void
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merge_close_in_files(int in_file_count, merge_in_file_t in_files[]);
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/** Try to get the frame type from the input files.
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*
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* @param in_file_count number of entries in in_files
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* @param in_files input file array
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* @return the frame type
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*/
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extern int
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merge_select_frame_type(int in_file_count, merge_in_file_t in_files[]);
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/** Try to get the snapshot length from the input files.
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*
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* @param in_file_count number of entries in in_files
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* @param in_files input file array
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* @return the snapshot length
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*/
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extern int
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merge_max_snapshot_length(int in_file_count, merge_in_file_t in_files[]);
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/** Read the next packet, in chronological order, from the set of files to
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* be merged.
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*
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* @param in_file_count number of entries in in_files
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* @param in_files input file array
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* @param err wiretap error, if failed
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* @param err_info wiretap error string, if failed
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* @return pointer to merge_in_file_t for file from which that packet
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* came, or NULL on error or EOF
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*/
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extern merge_in_file_t *
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merge_read_packet(int in_file_count, merge_in_file_t in_files[], int *err,
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gchar **err_info);
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/** Read the next packet, in file sequence order, from the set of files
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* to be merged.
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*
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* @param in_file_count number of entries in in_files
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* @param in_files input file array
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* @param err wiretap error, if failed
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* @param err_info wiretap error string, if failed
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* @return pointer to merge_in_file_t for file from which that packet
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* came, or NULL on error or EOF
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*/
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extern merge_in_file_t *
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merge_append_read_packet(int in_file_count, merge_in_file_t in_files[],
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int *err, gchar **err_info);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __MERGE_H__ */
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