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cfile.h
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cfile.h
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/** @file
*
* capture_file definition & GUI-independent manipulation
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef __CFILE_H__
#define __CFILE_H__
#include <epan/epan.h>
#include <epan/column-info.h>
#include <epan/dfilter/dfilter.h>
#include <epan/frame_data.h>
#include <epan/frame_data_sequence.h>
#include <wiretap/wtap.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/* Current state of file. */
typedef enum {
FILE_CLOSED, /* No file open */
FILE_READ_IN_PROGRESS, /* Reading a file we've opened */
FILE_READ_ABORTED, /* Read aborted by user */
FILE_READ_DONE /* Read completed */
} file_state;
/* Requested packets rescan action. */
typedef enum {
RESCAN_NONE = 0, /* No rescan requested */
RESCAN_SCAN, /* Request rescan without full redissection. */
RESCAN_REDISSECT /* Request full redissection. */
} rescan_type;
/* Character set for text search. */
typedef enum {
SCS_NARROW_AND_WIDE,
SCS_NARROW,
SCS_WIDE
/* add EBCDIC when it's implemented */
} search_charset_t;
typedef enum {
SD_FORWARD,
SD_BACKWARD
} search_direction;
/*
* Packet provider for programs using a capture file.
*/
struct packet_provider_data {
wtap *wth; /* Wiretap session */
const frame_data *ref;
frame_data *prev_dis;
frame_data *prev_cap;
frame_data_sequence *frames; /* Sequence of frames, if we're keeping that information */
GTree *frames_modified_blocks; /* BST with modified blocks for frames (key = frame_data) */
};
typedef struct _capture_file {
epan_t *epan;
file_state state; /* Current state of capture file */
gchar *filename; /* Name of capture file */
gchar *source; /* Temp file source, e.g. "Pipe from elsewhere" */
gboolean is_tempfile; /* Is capture file a temporary file? */
gboolean unsaved_changes; /* Does the capture file have changes that have not been saved? */
gboolean stop_flag; /* Stop current processing (loading, searching, etc.) */
gint64 f_datalen; /* Size of capture file data (uncompressed) */
guint16 cd_t; /* File type of capture file */
unsigned int open_type; /* open_routine index+1 used, if selected, or WTAP_TYPE_AUTO */
wtap_compression_type compression_type; /* Compression type of the file, or uncompressed */
int lnk_t; /* File link-layer type; could be WTAP_ENCAP_PER_PACKET */
GArray *linktypes; /* Array of packet link-layer types */
guint32 count; /* Total number of frames */
guint64 packet_comment_count; /* Number of comments in frames (could be >1 per frame... */
guint32 displayed_count; /* Number of displayed frames */
guint32 marked_count; /* Number of marked frames */
guint32 ignored_count; /* Number of ignored frames */
guint32 ref_time_count; /* Number of time referenced frames */
gboolean drops_known; /* TRUE if we know how many packets were dropped */
guint32 drops; /* Dropped packets */
nstime_t elapsed_time; /* Elapsed time */
int snap; /* Maximum captured packet length; 0 if unknown */
dfilter_t *rfcode; /* Compiled read filter program */
dfilter_t *dfcode; /* Compiled display filter program */
gchar *dfilter; /* Display filter string */
gboolean redissecting; /* TRUE if currently redissecting (cf_redissect_packets) */
gboolean read_lock; /* TRUE if currently processing a file (cf_read) */
rescan_type redissection_queued; /* Queued redissection type. */
/* search */
gchar *sfilter; /* Filter, hex value, or string being searched */
gboolean hex; /* TRUE if "Hex value" search was last selected */
gboolean string; /* TRUE if "String" search was last selected */
gboolean summary_data; /* TRUE if "String" search in "Packet list" (Info column) was last selected */
gboolean decode_data; /* TRUE if "String" search in "Packet details" was last selected */
gboolean packet_data; /* TRUE if "String" search in "Packet data" was last selected */
guint32 search_pos; /* Byte position of last byte found in a hex search */
guint32 search_len; /* Length of bytes matching the search */
gboolean case_type; /* TRUE if case-insensitive text search */
ws_regex_t *regex; /* Set if regular expression search */
search_charset_t scs_type; /* Character set for text search */
search_direction dir; /* Direction in which to do searches */
gboolean search_in_progress; /* TRUE if user just clicked OK in the Find dialog or hit <control>N/B */
/* packet provider */
struct packet_provider_data provider;
/* frames */
guint32 first_displayed; /* Frame number of first frame displayed */
guint32 last_displayed; /* Frame number of last frame displayed */
/* Data for currently selected frame */
column_info cinfo; /* Column formatting information */
frame_data *current_frame; /* Frame data */
epan_dissect_t *edt; /* Protocol dissection */
field_info *finfo_selected; /* Field info */
wtap_rec rec; /* Record header */
Buffer buf; /* Record data */
gpointer window; /* Top-level window associated with file */
gulong computed_elapsed; /* Elapsed time to load the file (in msec). */
guint32 cum_bytes;
} capture_file;
extern void cap_file_init(capture_file *cf);
const char *cap_file_provider_get_interface_name(struct packet_provider_data *prov, guint32 interface_id);
const char *cap_file_provider_get_interface_description(struct packet_provider_data *prov, guint32 interface_id);
wtap_block_t cap_file_provider_get_modified_block(struct packet_provider_data *prov, const frame_data *fd);
void cap_file_provider_set_modified_block(struct packet_provider_data *prov, frame_data *fd, const wtap_block_t new_block);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* cfile.h */