wireshark/gtk/capture_file_dlg.c

/* capture_file_dlg.c
 * Dialog boxes for handling capture files
 *
 * $Id$
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * 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.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

#include <string.h>

#include <gtk/gtk.h>

#include "packet-range.h"
#include <epan/filesystem.h>
#include <epan/addr_resolv.h>
#include <epan/prefs.h>

#include "../globals.h"
#include "../alert_box.h"
#include "../simple_dialog.h"
#include "../color.h"
#include "../ui_util.h"
#include "../color_filters.h"
#include "../merge.h"
#include "../util.h"
#include <wsutil/file_util.h>

#include "gtk/gtkglobals.h"
#include "gtk/keys.h"
#include "gtk/filter_dlg.h"
#include "gtk/gui_utils.h"
#include "gtk/dlg_utils.h"
#include "gtk/file_dlg.h"
#include "gtk/capture_file_dlg.h"
#include "gtk/drag_and_drop.h"
#include "gtk/main.h"
#include "gtk/menus.h"
#include "gtk/recent.h"
#include "gtk/color_dlg.h"
#include "gtk/new_packet_list.h"
#ifdef HAVE_LIBPCAP
#include "gtk/capture_dlg.h"
#endif
#include "gtk/stock_icons.h"
#include "gtk/range_utils.h"
#include "gtk/filter_autocomplete.h"

#if _WIN32
#include <gdk/gdkwin32.h>
#include <windows.h>
#include "win32/file_dlg_win32.h"
#endif


static void file_open_ok_cb(GtkWidget *w, gpointer fs);
static void file_open_destroy_cb(GtkWidget *win, gpointer user_data);
static void file_merge_ok_cb(GtkWidget *w, gpointer fs);
static void file_merge_destroy_cb(GtkWidget *win, gpointer user_data);
static void file_save_as_select_file_type_cb(GtkWidget *w, gpointer data);
static void file_save_as_ok_cb(GtkWidget *w, gpointer fs);
static void file_save_as_destroy_cb(GtkWidget *win, gpointer user_data);
static void file_color_import_ok_cb(GtkWidget *w, gpointer filter_list);
static void file_color_import_destroy_cb(GtkWidget *win, gpointer user_data);
static void file_color_export_ok_cb(GtkWidget *w, gpointer filter_list);
static void file_color_export_destroy_cb(GtkWidget *win, gpointer user_data);
static void set_file_type_list(GtkWidget *combo_box, int default_file_type);

#define E_FILE_TYPE_COMBO_BOX_KEY "file_type_combo_box"
#define E_COMPRESSED_CB_KEY       "compressed_cb"

#define E_FILE_M_RESOLVE_KEY	  "file_dlg_mac_resolve_key"
#define E_FILE_N_RESOLVE_KEY	  "file_dlg_network_resolve_key"
#define E_FILE_T_RESOLVE_KEY	  "file_dlg_transport_resolve_key"

#define E_MERGE_PREPEND_KEY 	  "merge_dlg_prepend_key"
#define E_MERGE_CHRONO_KEY 	      "merge_dlg_chrono_key"
#define E_MERGE_APPEND_KEY 	      "merge_dlg_append_key"


#define PREVIEW_TABLE_KEY       "preview_table_key"
#define PREVIEW_FILENAME_KEY    "preview_filename_key"
#define PREVIEW_FORMAT_KEY      "preview_format_key"
#define PREVIEW_SIZE_KEY        "preview_size_key"
#define PREVIEW_ELAPSED_KEY     "preview_elapsed_key"
#define PREVIEW_PACKETS_KEY     "preview_packets_key"
#define PREVIEW_FIRST_KEY       "preview_first_key"


/*
 * Keep a static pointer to the current "Save Capture File As" window, if
 * any, so that if somebody tries to do "File:Save" or "File:Save As"
 * while there's already a "Save Capture File As" window up, we just pop
 * up the existing one, rather than creating a new one.
 */
static GtkWidget *file_save_as_w;

/* XXX - can we make these not be static? */
static packet_range_t  range;
static gboolean        color_selected;
static GtkWidget      *range_tb;

#define PREVIEW_STR_MAX         200


/* set a new filename for the preview widget */
static wtap *
preview_set_filename(GtkWidget *prev, const gchar *cf_name)
{
    GtkWidget  *label;
    wtap       *wth;
    int         err = 0;
    gchar      *err_info;
    gchar       string_buff[PREVIEW_STR_MAX];
    gint64      filesize;


    /* init preview labels */
    label = (GtkWidget *)g_object_get_data(G_OBJECT(prev), PREVIEW_FILENAME_KEY);
    gtk_label_set_text(GTK_LABEL(label), "-");
    label = (GtkWidget *)g_object_get_data(G_OBJECT(prev), PREVIEW_FORMAT_KEY);
    gtk_label_set_text(GTK_LABEL(label), "-");
    label = (GtkWidget *)g_object_get_data(G_OBJECT(prev), PREVIEW_SIZE_KEY);
    gtk_label_set_text(GTK_LABEL(label), "-");
    label = (GtkWidget *)g_object_get_data(G_OBJECT(prev), PREVIEW_ELAPSED_KEY);
    gtk_label_set_text(GTK_LABEL(label), "-");
    label = (GtkWidget *)g_object_get_data(G_OBJECT(prev), PREVIEW_PACKETS_KEY);
    gtk_label_set_text(GTK_LABEL(label), "-");
    label = (GtkWidget *)g_object_get_data(G_OBJECT(prev), PREVIEW_FIRST_KEY);
    gtk_label_set_text(GTK_LABEL(label), "-");

    if(!cf_name) {
        return NULL;
    }

    label = (GtkWidget *)g_object_get_data(G_OBJECT(prev), PREVIEW_FILENAME_KEY);
    gtk_label_set_text(GTK_LABEL(label), get_basename(cf_name));

    if (test_for_directory(cf_name) == EISDIR) {
        label = (GtkWidget *)g_object_get_data(G_OBJECT(prev), PREVIEW_FORMAT_KEY);
        gtk_label_set_text(GTK_LABEL(label), "directory");
        return NULL;
    }

    wth = wtap_open_offline(cf_name, &err, &err_info, TRUE);
    if (wth == NULL) {
        label = (GtkWidget *)g_object_get_data(G_OBJECT(prev), PREVIEW_FORMAT_KEY);
        if(err == WTAP_ERR_FILE_UNKNOWN_FORMAT) {
            gtk_label_set_text(GTK_LABEL(label), "unknown file format");
        } else {
            gtk_label_set_text(GTK_LABEL(label), "error opening file");
        }
        return NULL;
    }

    /* Find the size of the file. */
    filesize = wtap_file_size(wth, &err);
    if (filesize == -1) {
        gtk_label_set_text(GTK_LABEL(label), "error getting file size");
        wtap_close(wth);
        return NULL;
    }
    g_snprintf(string_buff, PREVIEW_STR_MAX, "%" G_GINT64_MODIFIER "d bytes", filesize);
    label = (GtkWidget *)g_object_get_data(G_OBJECT(prev), PREVIEW_SIZE_KEY);
    gtk_label_set_text(GTK_LABEL(label), string_buff);

    /* type */
    g_strlcpy(string_buff, wtap_file_type_string(wtap_file_type(wth)), PREVIEW_STR_MAX);
    label = (GtkWidget *)g_object_get_data(G_OBJECT(prev), PREVIEW_FORMAT_KEY);
    gtk_label_set_text(GTK_LABEL(label), string_buff);

    return wth;
}


/* do a preview run on the currently selected capture file */
static void
preview_do(GtkWidget *prev, wtap *wth)
{
    GtkWidget  *label;
    unsigned int elapsed_time;
    time_t      time_preview;
    time_t      time_current;
    int         err = 0;
    gchar      *err_info;
    gint64      data_offset;
    const struct wtap_pkthdr *phdr;
    double      start_time = 0;	/* seconds, with nsec resolution */
    double      stop_time = 0;	/* seconds, with nsec resolution */
    double      cur_time;
    unsigned int packets = 0;
    gboolean    is_breaked = FALSE;
    gchar       string_buff[PREVIEW_STR_MAX];
    time_t      ti_time;
    struct tm  *ti_tm;


    time(&time_preview);
    while ( (wtap_read(wth, &err, &err_info, &data_offset)) ) {
        phdr = wtap_phdr(wth);
        cur_time = wtap_nstime_to_sec(&phdr->ts);
        if(packets == 0) {
            start_time 	= cur_time;
            stop_time = cur_time;
        }
        if (cur_time < start_time) {
            start_time = cur_time;
        }
        if (cur_time > stop_time){
            stop_time = cur_time;
        }

        packets++;
        if(packets%1000 == 0) {
            /* do we have a timeout? */
            time(&time_current);
            if(time_current-time_preview >= (time_t) prefs.gui_fileopen_preview) {
                is_breaked = TRUE;
                break;
            }
        }
    }

    if(err != 0) {
        g_snprintf(string_buff, PREVIEW_STR_MAX, "error after reading %u packets", packets);
        label = (GtkWidget *)g_object_get_data(G_OBJECT(prev), PREVIEW_PACKETS_KEY);
        gtk_label_set_text(GTK_LABEL(label), string_buff);
        wtap_close(wth);
        return;
    }

    /* packet count */
    if(is_breaked) {
        g_snprintf(string_buff, PREVIEW_STR_MAX, "more than %u packets (preview timeout)", packets);
    } else {
        g_snprintf(string_buff, PREVIEW_STR_MAX, "%u", packets);
    }
    label = g_object_get_data(G_OBJECT(prev), PREVIEW_PACKETS_KEY);
    gtk_label_set_text(GTK_LABEL(label), string_buff);

    /* first packet */
    ti_time = (long)start_time;
    ti_tm = localtime( &ti_time );
	if(ti_tm) {
		g_snprintf(string_buff, PREVIEW_STR_MAX,
				 "%04d-%02d-%02d %02d:%02d:%02d",
				 ti_tm->tm_year + 1900,
				 ti_tm->tm_mon + 1,
				 ti_tm->tm_mday,
				 ti_tm->tm_hour,
				 ti_tm->tm_min,
				 ti_tm->tm_sec);
	} else {
		g_snprintf(string_buff, PREVIEW_STR_MAX, "?");
	}
        label = g_object_get_data(G_OBJECT(prev), PREVIEW_FIRST_KEY);
    gtk_label_set_text(GTK_LABEL(label), string_buff);

    /* elapsed time */
    elapsed_time = (unsigned int)(stop_time-start_time);
    if(elapsed_time/86400) {
      g_snprintf(string_buff, PREVIEW_STR_MAX, "%02u days %02u:%02u:%02u",
        elapsed_time/86400, elapsed_time%86400/3600, elapsed_time%3600/60, elapsed_time%60);
    } else {
      g_snprintf(string_buff, PREVIEW_STR_MAX, "%02u:%02u:%02u",
        elapsed_time%86400/3600, elapsed_time%3600/60, elapsed_time%60);
    }
    if(is_breaked) {
      g_snprintf(string_buff, PREVIEW_STR_MAX, "unknown");
    }
    label = (GtkWidget *)g_object_get_data(G_OBJECT(prev), PREVIEW_ELAPSED_KEY);
    gtk_label_set_text(GTK_LABEL(label), string_buff);

    wtap_close(wth);
}

#if 0
/* as the dialog layout will look very ugly when using the file chooser preview mechanism,
   simply use the same layout as in GTK2.0 */
static void
update_preview_cb (GtkFileChooser *file_chooser, gpointer data)
{
    GtkWidget *prev = GTK_WIDGET (data);
    char *cf_name;
    gboolean have_preview;

    cf_name = gtk_file_chooser_get_preview_filename (file_chooser);

    have_preview = preview_set_filename(prev, cf_name);

    g_free (cf_name);

    have_preview = TRUE;
    gtk_file_chooser_set_preview_widget_active (file_chooser, have_preview);
}
#endif


/* the filename text entry changed */
static void
file_open_entry_changed(GtkWidget *w _U_, gpointer file_sel)
{
    GtkWidget *prev = (GtkWidget *)g_object_get_data(G_OBJECT(file_sel), PREVIEW_TABLE_KEY);
    gchar *cf_name;
    gboolean have_preview;
    wtap       *wth;

    /* get the filename */
    cf_name = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(file_sel));

    /* set the filename to the preview */
    wth = preview_set_filename(prev, cf_name);
    have_preview = (wth != NULL);

    g_free(cf_name);

    /* make the preview widget sensitive */
    gtk_widget_set_sensitive(prev, have_preview);

    /*
     * XXX - if the Open button isn't sensitive, you can't type into
     * the location bar and select the file or directory you've typed.
     * See
     *
     *	https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=1791
     *
     * It's not as if allowing users to click Open when they've
     * selected a file that's not a valid capture file will cause
     * anything worse than an error dialog, so we'll leave the Open
     * button sensitive for now.  Perhaps making it sensitive if
     * cf_name is NULL would also work, although I don't know whether
     * there are any cases where it would be non-null when you've
     * typed in the location bar.
     *
     * XXX - Bug 1791 also notes that, with the line removed, Bill
     * Meier "somehow managed to get the file chooser window somewhat
     * wedged in that neither the cancel or open buttons were responsive".
     * That seems a bit odd, given that, without this line, we're not
     * monkeying with the Open button's sensitivity, but...
     */
#if 0
    /* make the open/save/... dialog button sensitive */

    gtk_dialog_set_response_sensitive(file_sel, GTK_RESPONSE_ACCEPT, have_preview);
#endif

    /* do the actual preview */
    if(have_preview)
        preview_do(prev, wth);
}


/* copied from summary_dlg.c */
static GtkWidget *
add_string_to_table_sensitive(GtkWidget *list, guint *row, const gchar *title, const gchar *value, gboolean sensitive)
{
    GtkWidget *label;
    gchar     *indent;

    if(strlen(value) != 0) {
        indent = g_strdup_printf("   %s", title);
    } else {
        indent = g_strdup(title);
    }
    label = gtk_label_new(indent);
    g_free(indent);
    gtk_misc_set_alignment(GTK_MISC(label), 0.0f, 0.5f);
    gtk_widget_set_sensitive(label, sensitive);
    gtk_table_attach_defaults(GTK_TABLE(list), label, 0, 1, *row, *row+1);

    label = gtk_label_new(value);
    gtk_misc_set_alignment(GTK_MISC(label), 0.0f, 0.5f);
    gtk_widget_set_sensitive(label, sensitive);
    gtk_table_attach_defaults(GTK_TABLE(list), label, 1, 2, *row, *row+1);

    *row = *row + 1;

    return label;
}

static GtkWidget *
add_string_to_table(GtkWidget *list, guint *row, const gchar *title, const gchar *value)
{
    return add_string_to_table_sensitive(list, row, title, value, TRUE);
}



static GtkWidget *
preview_new(void)
{
    GtkWidget *table, *label;
    guint         row;

    table = gtk_table_new(1, 2, FALSE);
    gtk_table_set_col_spacings(GTK_TABLE(table), 6);
    gtk_table_set_row_spacings(GTK_TABLE(table), 3);
    row = 0;

    label = add_string_to_table(table, &row, "Filename:", "-");
    gtk_widget_set_size_request(label, DEF_WIDTH/3, -1);
    g_object_set_data(G_OBJECT(table), PREVIEW_FILENAME_KEY, label);
    label = add_string_to_table(table, &row, "Format:", "-");
    g_object_set_data(G_OBJECT(table), PREVIEW_FORMAT_KEY, label);
    label = add_string_to_table(table, &row, "Size:", "-");
    g_object_set_data(G_OBJECT(table), PREVIEW_SIZE_KEY, label);
    label = add_string_to_table(table, &row, "Packets:", "-");
    g_object_set_data(G_OBJECT(table), PREVIEW_PACKETS_KEY, label);
    label = add_string_to_table(table, &row, "First Packet:", "-");
    g_object_set_data(G_OBJECT(table), PREVIEW_FIRST_KEY, label);
    label = add_string_to_table(table, &row, "Elapsed time:", "-");
    g_object_set_data(G_OBJECT(table), PREVIEW_ELAPSED_KEY, label);

    return table;
}

/*
 * Keep a static pointer to the current "Open Capture File" window, if
 * any, so that if somebody tries to do "File:Open" while there's already
 * an "Open Capture File" window up, we just pop up the existing one,
 * rather than creating a new one.
 */
static GtkWidget *file_open_w;

/* Open a file */
static void
file_open_cmd(GtkWidget *w)
{
#if _WIN32
  win32_open_file(GDK_WINDOW_HWND(gtk_widget_get_window(top_level)));
#else /* _WIN32 */
  GtkWidget	*main_hb, *main_vb, *filter_hbox, *filter_bt, *filter_te,
  		*m_resolv_cb, *n_resolv_cb, *t_resolv_cb, *prev;
  /* No Apply button, and "OK" just sets our text widget, it doesn't
     activate it (i.e., it doesn't cause us to try to open the file). */
  static construct_args_t args = {
  	"Wireshark: Read Filter",
  	FALSE,
  	FALSE,
    TRUE
  };

  if (file_open_w != NULL) {
    /* There's already an "Open Capture File" dialog box; reactivate it. */
    reactivate_window(file_open_w);
    return;
  }

  file_open_w = file_selection_new("Wireshark: Open Capture File",
                                   FILE_SELECTION_OPEN);
  /* it's annoying, that the file chooser dialog is already shown here,
     so we cannot use the correct gtk_window_set_default_size() to resize it */
  gtk_widget_set_size_request(file_open_w, DEF_WIDTH, DEF_HEIGHT);

  switch (prefs.gui_fileopen_style) {

  case FO_STYLE_LAST_OPENED:
    /* The user has specified that we should start out in the last directory
       we looked in.  If we've already opened a file, use its containing
       directory, if we could determine it, as the directory, otherwise
       use the "last opened" directory saved in the preferences file if
       there was one. */
    /* This is now the default behaviour in file_selection_new() */
    break;

  case FO_STYLE_SPECIFIED:
    /* The user has specified that we should always start out in a
       specified directory; if they've specified that directory,
       start out by showing the files in that dir. */
    if (prefs.gui_fileopen_dir[0] != '\0')
      file_selection_set_current_folder(file_open_w, prefs.gui_fileopen_dir);
    break;
  }


  main_hb = gtk_hbox_new(FALSE, 3);
  file_selection_set_extra_widget(file_open_w, main_hb);
  gtk_widget_show(main_hb);

  /* Container for each row of widgets */
  main_vb = gtk_vbox_new(FALSE, 3);
  gtk_container_set_border_width(GTK_CONTAINER(main_vb), 5);
  gtk_box_pack_start(GTK_BOX(main_hb), main_vb, FALSE, FALSE, 0);
  gtk_widget_show(main_vb);

  /* filter row */
  filter_hbox = gtk_hbox_new(FALSE, 1);
  gtk_container_set_border_width(GTK_CONTAINER(filter_hbox), 0);
  gtk_box_pack_start(GTK_BOX(main_vb), filter_hbox, FALSE, FALSE, 0);
  gtk_widget_show(filter_hbox);

  filter_bt = gtk_button_new_from_stock(WIRESHARK_STOCK_DISPLAY_FILTER_ENTRY);
  g_signal_connect(filter_bt, "clicked",
                   G_CALLBACK(display_filter_construct_cb), &args);
  g_signal_connect(filter_bt, "destroy",
                   G_CALLBACK(filter_button_destroy_cb), NULL);
  gtk_box_pack_start(GTK_BOX(filter_hbox), filter_bt, FALSE, TRUE, 0);
  gtk_widget_show(filter_bt);
  gtk_widget_set_tooltip_text(filter_bt, "Open the \"Display Filter\" dialog, to edit/apply filters");

  filter_te = gtk_entry_new();
  g_object_set_data(G_OBJECT(filter_bt), E_FILT_TE_PTR_KEY, filter_te);
  gtk_box_pack_start(GTK_BOX(filter_hbox), filter_te, TRUE, TRUE, 3);
  g_signal_connect(filter_te, "changed",
                   G_CALLBACK(filter_te_syntax_check_cb), NULL);
  g_object_set_data(G_OBJECT(filter_hbox), E_FILT_AUTOCOMP_PTR_KEY, NULL);
  g_signal_connect(filter_te, "key-press-event", G_CALLBACK (filter_string_te_key_pressed_cb), NULL);
  g_signal_connect(file_open_w, "key-press-event", G_CALLBACK (filter_parent_dlg_key_pressed_cb), NULL);
  colorize_filter_te_as_empty(filter_te);
  gtk_widget_show(filter_te);
  gtk_widget_set_tooltip_text(filter_te, "Enter a display filter.");

  g_object_set_data(G_OBJECT(file_open_w), E_RFILTER_TE_KEY, filter_te);

  /* resolve buttons */
  m_resolv_cb = gtk_check_button_new_with_mnemonic("Enable _MAC name resolution");
  gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(m_resolv_cb),
	gbl_resolv_flags & RESOLV_MAC);
  gtk_box_pack_start(GTK_BOX(main_vb), m_resolv_cb, FALSE, FALSE, 0);
  g_object_set_data(G_OBJECT(file_open_w),
                  E_FILE_M_RESOLVE_KEY, m_resolv_cb);
  gtk_widget_show(m_resolv_cb);

  n_resolv_cb = gtk_check_button_new_with_mnemonic("Enable _network name resolution");
  gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(n_resolv_cb),
	gbl_resolv_flags & RESOLV_NETWORK);
  gtk_box_pack_start(GTK_BOX(main_vb), n_resolv_cb, FALSE, FALSE, 0);
  gtk_widget_show(n_resolv_cb);
  g_object_set_data(G_OBJECT(file_open_w), E_FILE_N_RESOLVE_KEY, n_resolv_cb);
  t_resolv_cb = gtk_check_button_new_with_mnemonic("Enable _transport name resolution");
  gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(t_resolv_cb),
	gbl_resolv_flags & RESOLV_TRANSPORT);
  gtk_box_pack_start(GTK_BOX(main_vb), t_resolv_cb, FALSE, FALSE, 0);
  gtk_widget_show(t_resolv_cb);
  g_object_set_data(G_OBJECT(file_open_w), E_FILE_T_RESOLVE_KEY, t_resolv_cb);

  g_signal_connect(file_open_w, "destroy",
                   G_CALLBACK(file_open_destroy_cb), NULL);

  /* preview widget */
  prev = preview_new();
  g_object_set_data(G_OBJECT(file_open_w), PREVIEW_TABLE_KEY, prev);
  gtk_widget_show_all(prev);
  gtk_box_pack_start(GTK_BOX(main_hb), prev, TRUE, TRUE, 0);

  g_signal_connect(GTK_FILE_CHOOSER(file_open_w), "selection-changed",
                   G_CALLBACK(file_open_entry_changed), file_open_w);
  file_open_entry_changed(file_open_w, file_open_w);

  g_object_set_data(G_OBJECT(file_open_w), E_DFILTER_TE_KEY,
                    g_object_get_data(G_OBJECT(w), E_DFILTER_TE_KEY));
  if (gtk_dialog_run(GTK_DIALOG(file_open_w)) == GTK_RESPONSE_ACCEPT)
  {
    file_open_ok_cb(file_open_w, file_open_w);
  }
  else window_destroy(file_open_w);
#endif /* _WIN32 */
}

static void file_open_answered_cb(gpointer dialog _U_, gint btn, gpointer data)
{
    switch(btn) {
    case(ESD_BTN_SAVE):
        /* save file first */
        file_save_as_cmd(after_save_open_dialog, data, FALSE);
        break;
    case(ESD_BTN_DONT_SAVE):
        cf_close(&cfile);
        file_open_cmd(data);
        break;
    case(ESD_BTN_CANCEL):
        break;
    default:
        g_assert_not_reached();
    }
}

void
file_open_cmd_cb(GtkWidget *widget, gpointer data _U_) {
  gpointer  dialog;

  if((cfile.state != FILE_CLOSED) && !cfile.user_saved && prefs.gui_ask_unsaved) {
    /* user didn't save his current file, ask him */
    dialog = simple_dialog(ESD_TYPE_CONFIRMATION, ESD_BTNS_SAVE_DONTSAVE_CANCEL,
                "%sSave capture file before opening a new one?%s\n\n"
                "If you open a new capture file without saving, your capture data will be discarded.",
                simple_dialog_primary_start(), simple_dialog_primary_end());
    simple_dialog_set_cb(dialog, file_open_answered_cb, widget);
  } else {
    /* unchanged file, just open a new one */
    file_open_cmd(widget);
  }
}

/* user pressed "open" button */
static void
file_open_ok_cb(GtkWidget *w, gpointer fs) {
  gchar       *cf_name, *s;
  const gchar *rfilter;
  GtkWidget   *filter_te, *m_resolv_cb, *n_resolv_cb, *t_resolv_cb;
  dfilter_t   *rfcode = NULL;
  int          err;

  cf_name = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(fs));
  filter_te = (GtkWidget *)g_object_get_data(G_OBJECT(w), E_RFILTER_TE_KEY);
  rfilter = gtk_entry_get_text(GTK_ENTRY(filter_te));
  if (!dfilter_compile(rfilter, &rfcode)) {
    bad_dfilter_alert_box(rfilter);
    g_free(cf_name);
    return;
  }

  /* Perhaps the user specified a directory instead of a file.
     Check whether they did. */
  if (test_for_directory(cf_name) == EISDIR) {
	/* It's a directory - set the file selection box to display that
	   directory, don't try to open the directory as a capture file. */
        set_last_open_dir(cf_name);
        g_free(cf_name);
        file_selection_set_current_folder(fs, get_last_open_dir());
    	return;
  }

  /* Try to open the capture file. */
  if (cf_open(&cfile, cf_name, FALSE, &err) != CF_OK) {
    /* We couldn't open it; don't dismiss the open dialog box,
       just leave it around so that the user can, after they
       dismiss the alert box popped up for the open error,
       try again. */
    if (rfcode != NULL)
      dfilter_free(rfcode);
    g_free(cf_name);

    /* XXX - as we cannot start a new event loop (using gtk_dialog_run()),
     * as this will prevent the user from closing the now existing error
     * message, simply close the dialog (this is the best we can do here). */
    if (file_open_w)
      window_destroy(file_open_w);

    return;
  }

  /* Attach the new read filter to "cf" ("cf_open()" succeeded, so
     it closed the previous capture file, and thus destroyed any
     previous read filter attached to "cf"). */
  cfile.rfcode = rfcode;

  /* Set the global resolving variable */
  gbl_resolv_flags = prefs.name_resolve;
  m_resolv_cb = (GtkWidget *)g_object_get_data(G_OBJECT(w), E_FILE_M_RESOLVE_KEY);
  if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON (m_resolv_cb)))
    gbl_resolv_flags |= RESOLV_MAC;
  else
    gbl_resolv_flags &= ~RESOLV_MAC;
  n_resolv_cb = (GtkWidget *)g_object_get_data(G_OBJECT(w), E_FILE_N_RESOLVE_KEY);
  if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON (n_resolv_cb)))
    gbl_resolv_flags |= RESOLV_NETWORK;
  else
    gbl_resolv_flags &= ~RESOLV_NETWORK;
  t_resolv_cb = (GtkWidget *)g_object_get_data(G_OBJECT(w), E_FILE_T_RESOLVE_KEY);
  if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON (t_resolv_cb)))
    gbl_resolv_flags |= RESOLV_TRANSPORT;
  else
    gbl_resolv_flags &= ~RESOLV_TRANSPORT;

  /* We've crossed the Rubicon; get rid of the file selection box. */
  window_destroy(GTK_WIDGET (fs));

  switch (cf_read(&cfile, FALSE)) {

  case CF_READ_OK:
  case CF_READ_ERROR:
    /* Just because we got an error, that doesn't mean we were unable
       to read any of the file; we handle what we could get from the
       file. */
    break;

  case CF_READ_ABORTED:
    /* The user bailed out of re-reading the capture file; the
       capture file has been closed - just free the capture file name
       string and return (without changing the last containing
       directory). */
    g_free(cf_name);
    return;
  }

  /* Save the name of the containing directory specified in the path name,
     if any; we can write over cf_name, which is a good thing, given that
     "get_dirname()" does write over its argument. */
  s = get_dirname(cf_name);
  set_last_open_dir(s);

  g_free(cf_name);
}

static void
file_open_destroy_cb(GtkWidget *win _U_, gpointer user_data _U_)
{
  /* Note that we no longer have a "Open Capture File" dialog box. */
  file_open_w = NULL;
}

/*
 * Keep a static pointer to the current "Merge Capture File" window, if
 * any, so that if somebody tries to do "File:Merge" while there's already
 * an "Merge Capture File" window up, we just pop up the existing one,
 * rather than creating a new one.
 */
static GtkWidget *file_merge_w;

/* Merge existing with another file */
static void
file_merge_cmd(GtkWidget *w)
{
#if _WIN32
  win32_merge_file(GDK_WINDOW_HWND(gtk_widget_get_window(top_level)));
  new_packet_list_freeze();
  new_packet_list_thaw();
#else /* _WIN32 */
  GtkWidget	*main_hb, *main_vb, *ft_hb, *ft_lb, *ft_combo_box, *filter_hbox,
		*filter_bt, *filter_te, *prepend_rb, *chrono_rb,
		*append_rb, *prev;

  /* No Apply button, and "OK" just sets our text widget, it doesn't
     activate it (i.e., it doesn't cause us to try to open the file). */
  static construct_args_t args = {
    "Wireshark: Read Filter",
    FALSE,
    FALSE,
    TRUE
  };

  if (file_merge_w != NULL) {
    /* There's already an "Merge Capture File" dialog box; reactivate it. */
    reactivate_window(file_merge_w);
    return;
  }

  /* Default to saving all packets, in the file's current format. */

  file_merge_w = file_selection_new("Wireshark: Merge with Capture File",
                                   FILE_SELECTION_OPEN);
  /* it's annoying, that the file chooser dialog is already shown here,
     so we cannot use the correct gtk_window_set_default_size() to resize it */
  gtk_widget_set_size_request(file_merge_w, DEF_WIDTH, DEF_HEIGHT);

  switch (prefs.gui_fileopen_style) {

  case FO_STYLE_LAST_OPENED:
    /* The user has specified that we should start out in the last directory
       we looked in.  If we've already opened a file, use its containing
       directory, if we could determine it, as the directory, otherwise
       use the "last opened" directory saved in the preferences file if
       there was one. */
    /* This is now the default behaviour in file_selection_new() */
    break;

  case FO_STYLE_SPECIFIED:
    /* The user has specified that we should always start out in a
       specified directory; if they've specified that directory,
       start out by showing the files in that dir. */
    if (prefs.gui_fileopen_dir[0] != '\0')
      file_selection_set_current_folder(file_merge_w, prefs.gui_fileopen_dir);
    break;
  }

  main_hb = gtk_hbox_new(FALSE, 3);
  file_selection_set_extra_widget(file_merge_w, main_hb);
  gtk_widget_show(main_hb);

  /* Container for each row of widgets */
  main_vb = gtk_vbox_new(FALSE, 3);
  gtk_container_set_border_width(GTK_CONTAINER(main_vb), 5);
  gtk_box_pack_start(GTK_BOX(main_hb), main_vb, FALSE, FALSE, 0);
  gtk_widget_show(main_vb);

  /* File type row */
  range_tb = NULL;
  ft_hb = gtk_hbox_new(FALSE, 3);
  gtk_container_add(GTK_CONTAINER(main_vb), ft_hb);
  gtk_widget_show(ft_hb);

  ft_lb = gtk_label_new("Merged output file type:");
  gtk_box_pack_start(GTK_BOX(ft_hb), ft_lb, FALSE, FALSE, 0);
  gtk_widget_show(ft_lb);

  ft_combo_box = ws_combo_box_new_text_and_pointer();

  /* Generate the list of file types we can save. */
  set_file_type_list(ft_combo_box, cfile.cd_t);
  gtk_box_pack_start(GTK_BOX(ft_hb), ft_combo_box, FALSE, FALSE, 0);
  gtk_widget_show(ft_combo_box);
  g_object_set_data(G_OBJECT(file_merge_w), E_FILE_TYPE_COMBO_BOX_KEY, ft_combo_box);
  ws_combo_box_set_active(GTK_COMBO_BOX(ft_combo_box), 0); /* No callback */

  filter_hbox = gtk_hbox_new(FALSE, 1);
  gtk_container_set_border_width(GTK_CONTAINER(filter_hbox), 0);
  gtk_box_pack_start(GTK_BOX(main_vb), filter_hbox, FALSE, FALSE, 0);
  gtk_widget_show(filter_hbox);

  filter_bt = gtk_button_new_from_stock(WIRESHARK_STOCK_DISPLAY_FILTER_ENTRY);
  g_signal_connect(filter_bt, "clicked",
                   G_CALLBACK(display_filter_construct_cb), &args);
  g_signal_connect(filter_bt, "destroy",
                   G_CALLBACK(filter_button_destroy_cb), NULL);
  gtk_box_pack_start(GTK_BOX(filter_hbox), filter_bt, FALSE, TRUE, 0);
  gtk_widget_show(filter_bt);
  gtk_widget_set_tooltip_text(filter_bt, "Open the \"Display Filter\" dialog, to edit/apply filters");

  filter_te = gtk_entry_new();
  g_object_set_data(G_OBJECT(filter_bt), E_FILT_TE_PTR_KEY, filter_te);
  gtk_box_pack_start(GTK_BOX(filter_hbox), filter_te, TRUE, TRUE, 3);
  g_signal_connect(filter_te, "changed",
                   G_CALLBACK(filter_te_syntax_check_cb), NULL);
  g_object_set_data(G_OBJECT(filter_hbox), E_FILT_AUTOCOMP_PTR_KEY, NULL);
  g_signal_connect(filter_te, "key-press-event", G_CALLBACK (filter_string_te_key_pressed_cb), NULL);
  g_signal_connect(file_merge_w, "key-press-event", G_CALLBACK (filter_parent_dlg_key_pressed_cb), NULL);
  colorize_filter_te_as_empty(filter_te);
  gtk_widget_show(filter_te);
  gtk_widget_set_tooltip_text(filter_te, "Enter a display filter.");

  g_object_set_data(G_OBJECT(file_merge_w), E_RFILTER_TE_KEY, filter_te);

  prepend_rb = gtk_radio_button_new_with_mnemonic_from_widget(NULL,
      "Prepend packets to existing file");
  gtk_widget_set_tooltip_text(prepend_rb, "The resulting file contains the packets from the selected, followed by the packets from the currently loaded file, the packet timestamps will be ignored.");
  gtk_box_pack_start(GTK_BOX(main_vb), prepend_rb, FALSE, FALSE, 0);
  g_object_set_data(G_OBJECT(file_merge_w),
                  E_MERGE_PREPEND_KEY, prepend_rb);
  gtk_widget_show(prepend_rb);

  chrono_rb = gtk_radio_button_new_with_mnemonic_from_widget(GTK_RADIO_BUTTON(prepend_rb), "Merge packets chronologically");
  gtk_widget_set_tooltip_text(chrono_rb, "The resulting file contains all the packets from the currently loaded and the selected file, sorted by the packet timestamps.");
  gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(chrono_rb), TRUE);
  gtk_box_pack_start(GTK_BOX(main_vb), chrono_rb, FALSE, FALSE, 0);
  gtk_widget_show(chrono_rb);
  g_object_set_data(G_OBJECT(file_merge_w), E_MERGE_CHRONO_KEY, chrono_rb);

  append_rb = gtk_radio_button_new_with_mnemonic_from_widget(GTK_RADIO_BUTTON(prepend_rb), "Append packets to existing file");
  gtk_widget_set_tooltip_text(append_rb, "The resulting file contains the packets from the currently loaded, followed by the packets from the selected file, the packet timestamps will be ignored.");
  gtk_box_pack_start(GTK_BOX(main_vb), append_rb, FALSE, FALSE, 0);
  gtk_widget_show(append_rb);
  g_object_set_data(G_OBJECT(file_merge_w), E_MERGE_APPEND_KEY, append_rb);

  g_signal_connect(file_merge_w, "destroy",
                   G_CALLBACK(file_merge_destroy_cb), NULL);

  /* preview widget */
  prev = preview_new();
  g_object_set_data(G_OBJECT(file_merge_w), PREVIEW_TABLE_KEY, prev);
  gtk_widget_show_all(prev);
  gtk_box_pack_start(GTK_BOX(main_hb), prev, TRUE, TRUE, 0);

  g_signal_connect(GTK_FILE_CHOOSER(file_merge_w), "selection-changed",
                   G_CALLBACK(file_open_entry_changed), file_merge_w);
  file_open_entry_changed(file_merge_w, file_merge_w);

  g_object_set_data(G_OBJECT(file_merge_w), E_DFILTER_TE_KEY,
                    g_object_get_data(G_OBJECT(w), E_DFILTER_TE_KEY));
  if (gtk_dialog_run(GTK_DIALOG(file_merge_w)) == GTK_RESPONSE_ACCEPT)
  {
    file_merge_ok_cb(file_merge_w, file_merge_w);
  }
  else window_destroy(file_merge_w);
#endif /* _WIN32 */
}

static void file_merge_answered_cb(gpointer dialog _U_, gint btn, gpointer data _U_)
{
    switch(btn) {
    case(ESD_BTN_OK):
        /* save file first */
        file_save_as_cmd(after_save_merge_dialog, data, FALSE);
        break;
    case(ESD_BTN_CANCEL):
        break;
    default:
        g_assert_not_reached();
    }
}

void
file_merge_cmd_cb(GtkWidget *widget, gpointer data _U_) {
  gpointer  dialog;

  if((cfile.state != FILE_CLOSED) && !cfile.user_saved && prefs.gui_ask_unsaved) {
    /* user didn't saved his current file, ask him */
    dialog = simple_dialog(ESD_TYPE_CONFIRMATION, ESD_BTNS_OK_CANCEL,
                "%sSave the capture file before merging to another one?%s\n\n"
                "A temporary capture file can't be merged.",
                simple_dialog_primary_start(), simple_dialog_primary_end());
    simple_dialog_set_cb(dialog, file_merge_answered_cb, widget);
  } else {
    /* unchanged file, just start to merge */
    file_merge_cmd(widget);
  }
}


static void
file_merge_ok_cb(GtkWidget *w, gpointer fs) {
  gchar       *cf_name, *s;
  const gchar *rfilter;
  GtkWidget   *ft_combo_box, *filter_te, *rb;
  dfilter_t   *rfcode = NULL;
  int          err;
  cf_status_t  merge_status;
  char        *in_filenames[2];
  char        *tmpname;
  gpointer     ptr;
  int          file_type;


  cf_name = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(fs));
  filter_te = (GtkWidget *)g_object_get_data(G_OBJECT(w), E_RFILTER_TE_KEY);
  rfilter = gtk_entry_get_text(GTK_ENTRY(filter_te));
  if (!dfilter_compile(rfilter, &rfcode)) {
    bad_dfilter_alert_box(rfilter);
    g_free(cf_name);
    return;
  }

  ft_combo_box  = (GtkWidget *)g_object_get_data(G_OBJECT(w), E_FILE_TYPE_COMBO_BOX_KEY);
  if (! ws_combo_box_get_active_pointer(GTK_COMBO_BOX(ft_combo_box), &ptr)) {
      g_assert_not_reached();  /* Programming error: somehow nothing is active */
  }
  file_type = GPOINTER_TO_INT(ptr);

  /* Perhaps the user specified a directory instead of a file.
     Check whether they did. */
  if (test_for_directory(cf_name) == EISDIR) {
	/* It's a directory - set the file selection box to display that
	   directory, don't try to open the directory as a capture file. */
        set_last_open_dir(cf_name);
        g_free(cf_name);
        file_selection_set_current_folder(fs, get_last_open_dir());
    	return;
  }

  /* merge or append the two files */
  rb = (GtkWidget *)g_object_get_data(G_OBJECT(w), E_MERGE_CHRONO_KEY);
  tmpname = NULL;
  if(gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON (rb))) {
      /* chronological order */
      in_filenames[0] = cfile.filename;
      in_filenames[1] = cf_name;
      merge_status = cf_merge_files(&tmpname, 2, in_filenames, file_type, FALSE);
  } else {
      rb = (GtkWidget *)g_object_get_data(G_OBJECT(w), E_MERGE_PREPEND_KEY);
      if(gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON (rb))) {
          /* prepend file */
          in_filenames[0] = cf_name;
          in_filenames[1] = cfile.filename;
          merge_status = cf_merge_files(&tmpname, 2, in_filenames, file_type,
                                        TRUE);
      } else {
          /* append file */
          in_filenames[0] = cfile.filename;
          in_filenames[1] = cf_name;
          merge_status = cf_merge_files(&tmpname, 2, in_filenames, file_type,
                                        TRUE);
      }
  }

  g_free(cf_name);

  if (merge_status != CF_OK) {
    if (rfcode != NULL)
      dfilter_free(rfcode);
    g_free(tmpname);
    return;
  }

  cf_close(&cfile);

  /* We've crossed the Rubicon; get rid of the file selection box. */
  window_destroy(GTK_WIDGET (fs));

  /* Try to open the merged capture file. */
  if (cf_open(&cfile, tmpname, TRUE /* temporary file */, &err) != CF_OK) {
    /* We couldn't open it; don't dismiss the open dialog box,
       just leave it around so that the user can, after they
       dismiss the alert box popped up for the open error,
       try again. */
    if (rfcode != NULL)
      dfilter_free(rfcode);
    g_free(tmpname);
    /* XXX - as we cannot start a new event loop (using gtk_dialog_run()),
     * as this will prevent the user from closing the now existing error
     * message, simply close the dialog (this is the best we can do here). */
    if (file_open_w)
      window_destroy(file_open_w);
    return;
  }
  g_free(tmpname);

  /* Attach the new read filter to "cf" ("cf_open()" succeeded, so
     it closed the previous capture file, and thus destroyed any
     previous read filter attached to "cf"). */
  cfile.rfcode = rfcode;

  switch (cf_read(&cfile, FALSE)) {

  case CF_READ_OK:
  case CF_READ_ERROR:
    /* Just because we got an error, that doesn't mean we were unable
       to read any of the file; we handle what we could get from the
       file. */
    break;

  case CF_READ_ABORTED:
    /* The user bailed out of re-reading the capture file; the
       capture file has been closed - just free the capture file name
       string and return (without changing the last containing
       directory). */
    return;
  }

  /* Save the name of the containing directory specified in the path name,
     if any; we can write over cf_merged_name, which is a good thing, given that
     "get_dirname()" does write over its argument. */
  s = get_dirname(tmpname);
  set_last_open_dir(s);
}

static void
file_merge_destroy_cb(GtkWidget *win _U_, gpointer user_data _U_)
{
  /* Note that we no longer have a "Merge Capture File" dialog box. */
  file_merge_w = NULL;
}


static void file_close_answered_cb(gpointer dialog _U_, gint btn, gpointer data _U_)
{
    switch(btn) {
    case(ESD_BTN_SAVE):
        /* save file first */
        file_save_as_cmd(after_save_close_file, NULL, FALSE);
        break;
    case(ESD_BTN_DONT_SAVE):
        cf_close(&cfile);
        break;
    case(ESD_BTN_CANCEL):
        break;
    default:
        g_assert_not_reached();
    }
}

/* Close a file */
void
file_close_cmd_cb(GtkWidget *widget _U_, gpointer data _U_) {
  gpointer  dialog;

  if((cfile.state != FILE_CLOSED) && !cfile.user_saved && prefs.gui_ask_unsaved) {
    /* user didn't saved his current file, ask him */
    dialog = simple_dialog(ESD_TYPE_CONFIRMATION, ESD_BTNS_SAVE_DONTSAVE_CANCEL,
                "%sSave capture file before closing it?%s\n\n"
                "If you close without saving, your capture data will be discarded.",
                simple_dialog_primary_start(), simple_dialog_primary_end());

    simple_dialog_set_cb(dialog, file_close_answered_cb, NULL);
  } else {
    /* unchanged file, just close it */
    cf_close(&cfile);
  }
}

void
file_save_cmd_cb(GtkWidget *w _U_, gpointer data _U_) {
  /* If the file's already been saved, do nothing.  */
  if (cfile.user_saved)
    return;

  /* Do a "Save As". */
  file_save_as_cmd(after_save_no_action, NULL, FALSE);
}

static gboolean
can_save_with_wiretap(int ft)
{
  /* To save a file with Wiretap, Wiretap has to handle that format,
     and its code to handle that format must be able to write a file
     with this file's encapsulation type. */
  return wtap_dump_can_open(ft) && wtap_dump_can_write_encap(ft, cfile.lnk_t);
}


/* Attach a list of the valid 'save as' file types to a combo_box by
   checking what Wiretap supports.  Make the default type the first
   in the list.
 */
static void
set_file_type_list(GtkWidget *combo_box, int default_file_type)
{
  int   ft;
  int   other_file_type = -1;

  /* Can we save this file in the default file type? */
  if (!can_save_with_wiretap(default_file_type)) {
    /* No - can we save it as a pcap-NG file? */
    if (can_save_with_wiretap(WTAP_FILE_PCAPNG)) {
      /* Yes - default to pcap-NG, instead. */
      default_file_type = WTAP_FILE_PCAPNG;
    } else {
      /* OK, find the first file type we *can* save it as. */
      for (ft = 0; ft < WTAP_NUM_FILE_TYPES; ft++) {
        if (can_save_with_wiretap(ft)) {
          /* OK, got it. */
          default_file_type = ft;
        }
      }
    }
  }

  /* We should not get here unless there's at least one file type
     we can save this as - otherwise, the "Save As..." menu item
     should be disabled. */

  /* Put the default file format first in the list. */
  ws_combo_box_append_text_and_pointer(GTK_COMBO_BOX(combo_box),
                                       wtap_file_type_string(default_file_type),
                                       GINT_TO_POINTER(default_file_type));
  /* If it's pcap, put pcap-NG right after it; otherwise, if it's pcap-NG,
     put pcap right after it. */
  if (default_file_type == WTAP_FILE_PCAP) {
    if (can_save_with_wiretap(WTAP_FILE_PCAPNG))
      other_file_type = WTAP_FILE_PCAPNG;
  } else if (default_file_type == WTAP_FILE_PCAPNG) {
    if (can_save_with_wiretap(WTAP_FILE_PCAP))
      other_file_type = WTAP_FILE_PCAP;
  }
  if (other_file_type != -1) {
    ws_combo_box_append_text_and_pointer(GTK_COMBO_BOX(combo_box),
                                         wtap_file_type_string(other_file_type),
                                         GINT_TO_POINTER(other_file_type));
  }

  /* Add all the other file types. */
  for (ft = 0; ft < WTAP_NUM_FILE_TYPES; ft++) {
    if (ft == default_file_type || ft == other_file_type)
      continue; /* we've already done this one */
    if (can_save_with_wiretap(ft)) {
      /* OK, we can write it out in this type. */
      ws_combo_box_append_text_and_pointer(GTK_COMBO_BOX(combo_box), wtap_file_type_string(ft), GINT_TO_POINTER(ft));
    }
  }
}

static void
file_save_as_select_file_type_cb(GtkWidget *w, gpointer data _U_)
{
  int new_file_type;
  gpointer ptr;
  GtkWidget *compressed_cb;

  if (! ws_combo_box_get_active_pointer(GTK_COMBO_BOX(w), &ptr)) {
      g_assert_not_reached();  /* Programming error: somehow nothing is active */
  }
  new_file_type = GPOINTER_TO_INT(ptr);

  compressed_cb = (GtkWidget *)g_object_get_data(G_OBJECT(file_save_as_w), E_COMPRESSED_CB_KEY);
  gtk_widget_set_sensitive(compressed_cb, wtap_dump_can_compress(new_file_type));
}

/*
 * Update various dynamic parts of the range controls; called from outside
 * the file dialog code whenever the packet counts change.
 */
void
file_save_update_dynamics(void)
{
  if (file_save_as_w == NULL) {
    /* We don't currently have a "Save As..." dialog box up. */
    return;
  }

  range_update_dynamics(range_tb);
}


action_after_save_e action_after_save_g;
gpointer            action_after_save_data_g;


void
file_save_as_cmd(action_after_save_e action_after_save, gpointer action_after_save_data, gboolean save_only_displayed)
{
#if _WIN32
  win32_save_as_file(GDK_WINDOW_HWND(gtk_widget_get_window(top_level)), action_after_save, action_after_save_data);
#else /* _WIN32 */
  GtkWidget     *main_vb, *ft_hb, *ft_lb, *ft_combo_box, *range_fr, *compressed_cb;

  if (file_save_as_w != NULL) {
    /* There's already an "Save Capture File As" dialog box; reactivate it. */
    reactivate_window(file_save_as_w);
    return;
  }

  /* Default to saving all packets, in the file's current format. */

  /* init the packet range */
  packet_range_init(&range);
  range.process_filtered = save_only_displayed;

  /* build the file selection */
  file_save_as_w = file_selection_new ("Wireshark: Save Capture File As",
                                       FILE_SELECTION_SAVE);

  /* as the dialog might already be gone, when using this values, we cannot
   * set data to the dialog object, but keep global values */
  action_after_save_g       = action_after_save;
  action_after_save_data_g  = action_after_save_data;

  /* Container for each row of widgets */

  main_vb = gtk_vbox_new(FALSE, 5);
  gtk_container_set_border_width(GTK_CONTAINER(main_vb), 5);
  file_selection_set_extra_widget(file_save_as_w, main_vb);
  gtk_widget_show(main_vb);

  /*** Packet Range frame ***/
  range_fr = gtk_frame_new("Packet Range");
  gtk_box_pack_start(GTK_BOX(main_vb), range_fr, FALSE, FALSE, 0);
  gtk_widget_show(range_fr);

  /* range table */
  range_tb = range_new(&range);
  gtk_container_add(GTK_CONTAINER(range_fr), range_tb);
  gtk_widget_show(range_tb);

  /* File type row */
  ft_hb = gtk_hbox_new(FALSE, 3);
  gtk_container_add(GTK_CONTAINER(main_vb), ft_hb);
  gtk_widget_show(ft_hb);

  ft_lb = gtk_label_new("File type:");
  gtk_box_pack_start(GTK_BOX(ft_hb), ft_lb, FALSE, FALSE, 0);
  gtk_widget_show(ft_lb);

  ft_combo_box = ws_combo_box_new_text_and_pointer();

  /* Generate the list of file types we can save. */
  set_file_type_list(ft_combo_box, cfile.cd_t);
  gtk_box_pack_start(GTK_BOX(ft_hb), ft_combo_box, FALSE, FALSE, 0);
  gtk_widget_show(ft_combo_box);
  g_object_set_data(G_OBJECT(file_save_as_w), E_FILE_TYPE_COMBO_BOX_KEY, ft_combo_box);

  /* dynamic values in the range frame */
  range_update_dynamics(range_tb);

  /* compressed */
  compressed_cb = gtk_check_button_new_with_label("Compress with gzip");
  gtk_container_add(GTK_CONTAINER(ft_hb), compressed_cb);
  /* XXX - disable output compression for now, as this doesn't work with the
   * current optimization to simply copy a capture file if it's using the same
   * encapsulation ... */
  /* the rest of the implementation is just working fine :-( */
#if 0
  gtk_widget_show(compressed_cb);
#endif
  g_object_set_data(G_OBJECT(file_save_as_w), E_COMPRESSED_CB_KEY, compressed_cb);
  /* Ok: now "select" the default filetype which invokes file_save_as_select_file_type_cb */
  g_signal_connect(ft_combo_box, "changed", G_CALLBACK(file_save_as_select_file_type_cb), NULL);
  ws_combo_box_set_active(GTK_COMBO_BOX(ft_combo_box), 0);

  g_signal_connect(file_save_as_w, "destroy",
                   G_CALLBACK(file_save_as_destroy_cb), NULL);

  if (gtk_dialog_run(GTK_DIALOG(file_save_as_w)) == GTK_RESPONSE_ACCEPT) {
    file_save_as_ok_cb(file_save_as_w, file_save_as_w);
  } else {
    window_destroy(file_save_as_w);
  }
#endif /* _WIN32 */
}

void
file_save_as_cmd_cb(GtkWidget *w _U_, gpointer data _U_)
{
  file_save_as_cmd(after_save_no_action, NULL, TRUE);
}


/* all tests ok, we only have to save the file */
/* (and probably continue with a pending operation) */
static void
file_save_as_cb(GtkWidget *w _U_, gpointer fs) {
  GtkWidget *ft_combo_box;
  GtkWidget *compressed_cb;
  gchar	    *cf_name;
  gchar	    *dirname;
  gpointer   ptr;
  int        file_type;

  cf_name = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(fs));

  compressed_cb = (GtkWidget *)g_object_get_data(G_OBJECT(fs), E_COMPRESSED_CB_KEY);
  ft_combo_box  = (GtkWidget *)g_object_get_data(G_OBJECT(fs), E_FILE_TYPE_COMBO_BOX_KEY);

  if (! ws_combo_box_get_active_pointer(GTK_COMBO_BOX(ft_combo_box), &ptr)) {
      g_assert_not_reached();  /* Programming error: somehow nothing is active */
  }
  file_type = GPOINTER_TO_INT(ptr);

  /* XXX - if the user requests to save to an already existing filename, */
  /* ask in a dialog if that's intended */
  /* currently, cf_save() will simply deny it */

  /* Write out the packets (all, or only the ones from the current
     range) to the file with the specified name. */
  if (cf_save(&cfile, cf_name, &range, file_type,
	  gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(compressed_cb))) != CF_OK) {
    /* The write failed; don't dismiss the open dialog box,
       just leave it around so that the user can, after they
       dismiss the alert box popped up for the error, try again. */
    g_free(cf_name);
    /* XXX - as we cannot start a new event loop (using gtk_dialog_run()),
     * as this will prevent the user from closing the now existing error
     * message, simply close the dialog (this is the best we can do here). */
    if (file_save_as_w)
      window_destroy(GTK_WIDGET (fs));
    return;
  }

  /* The write succeeded; get rid of the file selection box. */
  /* cf_save() might already closed our dialog! */
  if (file_save_as_w)
    window_destroy(GTK_WIDGET (fs));

  /* Save the directory name for future file dialogs. */
  dirname = get_dirname(cf_name);  /* Overwrites cf_name */
  set_last_open_dir(dirname);
  g_free(cf_name);

  /* we have finished saving, do we have pending things to do? */
  switch(action_after_save_g) {
  case(after_save_no_action):
      break;
  case(after_save_open_dialog):
      file_open_cmd(action_after_save_data_g);
      break;
  case(after_save_open_recent_file):
      menu_open_recent_file_cmd(action_after_save_data_g);
      break;
  case(after_save_open_dnd_file):
      dnd_open_file_cmd(action_after_save_data_g);
      break;
  case(after_save_merge_dialog):
      file_merge_cmd(action_after_save_data_g);
      break;
#ifdef HAVE_LIBPCAP
  case(after_save_capture_dialog):
      capture_start_confirmed();
      break;
#endif
  case(after_save_close_file):
      cf_close(&cfile);
      break;
  case(after_save_exit):
      main_do_quit();
      break;
  default:
      g_assert_not_reached();
  }

  action_after_save_g = after_save_no_action;
}


static void file_save_as_exists_answered_cb(gpointer dialog _U_, gint btn, gpointer data)
{
    gchar	*cf_name;

    cf_name = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(data));

    switch(btn) {
    case(ESD_BTN_OK):
        /* save file */
        ws_unlink(cf_name);
        file_save_as_cb(NULL, data);
        break;
    case(ESD_BTN_CANCEL):
        /* XXX - as we cannot start a new event loop (using gtk_dialog_run()),
         * as this will prevent the user from closing the now existing error
         * message, simply close the dialog (this is the best we can do here). */
        if (file_save_as_w)
            window_destroy(file_save_as_w);
        break;
    default:
        g_assert_not_reached();
    }
    g_free(cf_name);
}


/* user pressed "Save" dialog "Ok" button */
static void
file_save_as_ok_cb(GtkWidget *w _U_, gpointer fs) {
  gchar	*cf_name;
  gpointer  dialog;

  cf_name = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(fs));

  /* Perhaps the user specified a directory instead of a file.
     Check whether they did. */
  if (test_for_directory(cf_name) == EISDIR) {
        /* It's a directory - set the file selection box to display that
           directory, and leave the selection box displayed. */
        set_last_open_dir(cf_name);
        g_free(cf_name);
        file_selection_set_current_folder(fs, get_last_open_dir());
        return;
  }

  /* Check whether the range is valid. */
  if (!range_check_validity(&range)) {
    /* The range isn't valid; don't dismiss the open dialog box,
       just leave it around so that the user can, after they
       dismiss the alert box popped up for the error, try again. */
    g_free(cf_name);
    /* XXX - as we cannot start a new event loop (using gtk_dialog_run()),
     * as this will prevent the user from closing the now existing error
     * message, simply close the dialog (this is the best we can do here). */
    if (file_save_as_w)
      window_destroy(GTK_WIDGET (fs));

    return;
  }

  /*
   * Check that the from file is not the same as to file
   * We do it here so we catch all cases ...
   * Unfortunately, the file requester gives us an absolute file
   * name and the read file name may be relative (if supplied on
   * the command line). From Joerg Mayer.
   */
  if (files_identical(cfile.filename, cf_name)) {
    simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
      "%sCapture file: \"%s\" identical to loaded file!%s\n\n"
      "Please choose a different filename.",
      simple_dialog_primary_start(), cf_name, simple_dialog_primary_end());
    g_free(cf_name);
    /* XXX - as we cannot start a new event loop (using gtk_dialog_run()),
     * as this will prevent the user from closing the now existing error
     * message, simply close the dialog (this is the best we can do here). */
    if (file_save_as_w)
      window_destroy(GTK_WIDGET (fs));

    return;
  }

  /* don't show the dialog while saving (or asking) */
  gtk_widget_hide(GTK_WIDGET (fs));

  /* it the file doesn't exist, simply try to save it */
  if (!file_exists(cf_name)) {
    file_save_as_cb(NULL, fs);
    g_free(cf_name);
    return;
  }

  /* the file exists, ask the user to remove it first */
  dialog = simple_dialog(ESD_TYPE_CONFIRMATION, ESD_BTNS_OK_CANCEL,
      "%sA file named \"%s\" already exists.%s\n\n"
      "Do you want to replace it with the capture you are saving?",
      simple_dialog_primary_start(), cf_name, simple_dialog_primary_end());
  simple_dialog_set_cb(dialog, file_save_as_exists_answered_cb, fs);

  g_free(cf_name);
}

void
file_save_as_destroy(void)
{
  if (file_save_as_w)
    window_destroy(file_save_as_w);
}

static void
file_save_as_destroy_cb(GtkWidget *win _U_, gpointer user_data _U_)
{
  /* Note that we no longer have a "Save Capture File As" dialog box. */
  file_save_as_w = NULL;
}

/* Reload a file using the current read and display filters */
void
file_reload_cmd_cb(GtkWidget *w _U_, gpointer data _U_) {
  cf_reload(&cfile);
}

/******************** Color Filters *********************************/
/*
 * Keep a static pointer to the current "Color Export" window, if
 * any, so that if somebody tries to do "Export"
 * while there's already a "Color Export" window up, we just pop
 * up the existing one, rather than creating a new one.
 */
static GtkWidget *file_color_import_w;

/* sets the file path to the global color filter file.
   WARNING: called by both the import and the export dialog.
*/
static void
color_global_cb(GtkWidget *widget _U_, gpointer data)
{
  GtkWidget *fs_widget = (GtkWidget *)data;
  gchar *path;

  /* decide what file to open (from dfilter code) */
  path = get_datafile_path("colorfilters");

  gtk_file_chooser_select_filename(GTK_FILE_CHOOSER(fs_widget), path);

  g_free(path);
}

/* Import color filters */
void
file_color_import_cmd_cb(GtkWidget *color_filters, gpointer filter_list _U_)
{
#if _WIN32
  win32_import_color_file(GDK_WINDOW_HWND(gtk_widget_get_window(top_level)), color_filters);
#else /* _WIN32 */
  GtkWidget	*main_vb, *cfglobal_but;

  /* No Apply button, and "OK" just sets our text widget, it doesn't
     activate it (i.e., it doesn't cause us to try to open the file). */

  if (file_color_import_w != NULL) {
    /* There's already an "Import Color Filters" dialog box; reactivate it. */
    reactivate_window(file_color_import_w);
    return;
  }

  file_color_import_w = file_selection_new("Wireshark: Import Color Filters",
                                           FILE_SELECTION_OPEN);

  /* Container for each row of widgets */
  main_vb = gtk_vbox_new(FALSE, 3);
  gtk_container_set_border_width(GTK_CONTAINER(main_vb), 5);
  file_selection_set_extra_widget(file_color_import_w, main_vb);
  gtk_widget_show(main_vb);


  cfglobal_but = gtk_button_new_with_label("Global Color Filter File");
  gtk_container_add(GTK_CONTAINER(main_vb), cfglobal_but);
  g_signal_connect(cfglobal_but, "clicked",
                   G_CALLBACK(color_global_cb), file_color_import_w);
  gtk_widget_show(cfglobal_but);

  g_signal_connect(file_color_import_w, "destroy",
                   G_CALLBACK(file_color_import_destroy_cb), NULL);


  if (gtk_dialog_run(GTK_DIALOG(file_color_import_w)) == GTK_RESPONSE_ACCEPT)
  {
      file_color_import_ok_cb(file_color_import_w, color_filters);
  }
  else window_destroy(file_color_import_w);
#endif /* _WIN32 */
}

static void
file_color_import_ok_cb(GtkWidget *w, gpointer color_filters) {
  gchar     *cf_name, *s;
  GtkWidget *fs = gtk_widget_get_toplevel(w);

  cf_name = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(fs));

  /* Perhaps the user specified a directory instead of a file.
     Check whether they did. */
  if (test_for_directory(cf_name) == EISDIR) {
	/* It's a directory - set the file selection box to display that
	   directory, don't try to open the directory as a color filter file. */
        set_last_open_dir(cf_name);
        g_free(cf_name);
        file_selection_set_current_folder(fs, get_last_open_dir());
    	return;
  }

  /* Try to open the color filter file. */

  if (!color_filters_import(cf_name, color_filters)) {
    /* We couldn't open it; don't dismiss the open dialog box,
       just leave it around so that the user can, after they
       dismiss the alert box popped up for the open error,
       try again. */
    g_free(cf_name);
    /* XXX - as we cannot start a new event loop (using gtk_dialog_run()),
     * as this will prevent the user from closing the now existing error
     * message, simply close the dialog (this is the best we can do here). */
    window_destroy(GTK_WIDGET (fs));

    return;
  }

  /* We've crossed the Rubicon; get rid of the file selection box. */
  window_destroy(GTK_WIDGET (fs));

  /* Save the name of the containing directory specified in the path name,
     if any; we can write over cf_name, which is a good thing, given that
     "get_dirname()" does write over its argument. */
  s = get_dirname(cf_name);
  set_last_open_dir(s);

  g_free(cf_name);
}

static void
file_color_import_destroy_cb(GtkWidget *win _U_, gpointer user_data _U_)
{
  /* Note that we no longer have a "Open Capture File" dialog box. */
  file_color_import_w = NULL;
}

static GtkWidget *file_color_export_w;
/*
 * Set the "Export only selected filters" toggle button as appropriate for
 * the current output file type and count of selected filters.
 *
 * Called when the "Export" dialog box is created and when the selected
 * count changes.
 */
static void
color_set_export_selected_sensitive(GtkWidget * cfselect_cb)
{
  if (file_color_export_w == NULL) {
    /* We don't currently have an "Export" dialog box up. */
    return;
  }

  /* We can request that only the selected filters be saved only if
        there *are* selected filters. */
  if (color_selected_count() != 0)
    gtk_widget_set_sensitive(cfselect_cb, TRUE);
  else {
    /* Force the "Export only selected filters" toggle to "false", turn
       off the flag it controls. */
    color_selected = FALSE;
    gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(cfselect_cb), FALSE);
    gtk_widget_set_sensitive(cfselect_cb, FALSE);
  }
}

static void
color_toggle_selected_cb(GtkWidget *widget, gpointer data _U_)
{
  color_selected = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON (widget));
}

void
file_color_export_cmd_cb(GtkWidget *w _U_, gpointer filter_list)
{
#if _WIN32
  win32_export_color_file(GDK_WINDOW_HWND(gtk_widget_get_window(top_level)), filter_list);
#else /* _WIN32 */
  GtkWidget *main_vb, *cfglobal_but;
  GtkWidget *cfselect_cb;

  if (file_color_export_w != NULL) {
    /* There's already an "Color Filter Export" dialog box; reactivate it. */
    reactivate_window(file_color_export_w);
    return;
  }

  color_selected   = FALSE;

  file_color_export_w = file_selection_new("Wireshark: Export Color Filters",
                                           FILE_SELECTION_SAVE);

  /* Container for each row of widgets */
  main_vb = gtk_vbox_new(FALSE, 3);
  gtk_container_set_border_width(GTK_CONTAINER(main_vb), 5);
  file_selection_set_extra_widget(file_color_export_w, main_vb);
  gtk_widget_show(main_vb);

  cfselect_cb = gtk_check_button_new_with_label("Export only selected filters");
  gtk_container_add(GTK_CONTAINER(main_vb), cfselect_cb);
  gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(cfselect_cb), FALSE);
  g_signal_connect(cfselect_cb, "toggled",
                   G_CALLBACK(color_toggle_selected_cb), NULL);
  gtk_widget_show(cfselect_cb);
  color_set_export_selected_sensitive(cfselect_cb);

  cfglobal_but = gtk_button_new_with_label("Global Color Filter File");
  gtk_container_add(GTK_CONTAINER(main_vb), cfglobal_but);
  g_signal_connect(cfglobal_but, "clicked",
                   G_CALLBACK(color_global_cb), file_color_export_w);
  gtk_widget_show(cfglobal_but);

  g_signal_connect(file_color_export_w, "destroy",
                   G_CALLBACK(file_color_export_destroy_cb), NULL);

  if (gtk_dialog_run(GTK_DIALOG(file_color_export_w)) == GTK_RESPONSE_ACCEPT)
  {
      file_color_export_ok_cb(file_color_export_w, filter_list);
  }
  else window_destroy(file_color_export_w);
#endif /* _WIN32 */
}

static void
file_color_export_ok_cb(GtkWidget *w, gpointer filter_list) {
  gchar	*cf_name;
  gchar	*dirname;
  GtkWidget *fs = gtk_widget_get_toplevel(w);

  cf_name = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(fs));

  /* Perhaps the user specified a directory instead of a file.
     Check whether they did. */
  if (test_for_directory(cf_name) == EISDIR) {
        /* It's a directory - set the file selection box to display that
           directory, and leave the selection box displayed. */
        set_last_open_dir(cf_name);
        g_free(cf_name);
        file_selection_set_current_folder(fs, get_last_open_dir());
        return;
  }

  /* Write out the filters (all, or only the ones that are currently
     displayed or selected) to the file with the specified name. */

   if (!color_filters_export(cf_name, filter_list, color_selected))
   {
    /* The write failed; don't dismiss the open dialog box,
       just leave it around so that the user can, after they
       dismiss the alert box popped up for the error, try again. */
       g_free(cf_name);

      /* XXX - as we cannot start a new event loop (using gtk_dialog_run()),
       * as this will prevent the user from closing the now existing error
       * message, simply close the dialog (this is the best we can do here). */
       window_destroy(GTK_WIDGET (fs));

       return;
   }

  /* The write succeeded; get rid of the file selection box. */
  window_destroy(GTK_WIDGET (fs));

  /* Save the directory name for future file dialogs. */
  dirname = get_dirname(cf_name);  /* Overwrites cf_name */
  set_last_open_dir(dirname);
  g_free(cf_name);
}

static void
file_color_export_destroy_cb(GtkWidget *win _U_, gpointer user_data _U_)
{
  file_color_export_w = NULL;
}