/* cfile.h
 * 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 */
  GRegex                     *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 */
  gint                        current_row;          /* Row number */
  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 */

/*
 * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
 *
 * Local Variables:
 * c-basic-offset: 2
 * tab-width: 8
 * indent-tabs-mode: nil
 * End:
 *
 * vi: set shiftwidth=2 tabstop=8 expandtab:
 * :indentSize=2:tabSize=8:noTabs=true:
 */
