/* main.c
 *
 * $Id: main.c 14246 2005-04-30 17:23:33Z ulfl $
 *
 * Ethereal - Network traffic analyzer
 * By Gerald Combs <gerald@ethereal.com>
 * Copyright 1998 Gerald Combs
 *
 * Richard Sharpe, 13-Feb-1999, added support for initializing structures
 *                              needed by dissect routines
 * Jeff Foster,    2001/03/12,  added support tabbed hex display windowss
 *
 *
 * 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

#include <gtk/gtk.h>

#include <string.h>
#include <ctype.h>

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

#ifdef HAVE_IO_H
#include <io.h> /* open/close on win32 */
#endif

#ifdef NEED_STRERROR_H
#include "strerror.h"
#endif

#ifdef NEED_GETOPT_H
#include "getopt.h"
#endif

#ifdef _WIN32 /* Needed for console I/O */
#include <fcntl.h>
#include <conio.h>
#endif

#include <epan/epan.h>
#include <epan/filesystem.h>
#include <epan/epan_dissect.h>
#include <epan/timestamp.h>
#include <epan/packet.h>
#include <epan/plugins.h>
#include <epan/dfilter/dfilter.h>
#include <epan/strutil.h>
#include <epan/addr_resolv.h>

/* general (not GTK specific) */
#include "svnversion.h"
#include "file.h"
#include "summary.h"
#include "filters.h"
#include "disabled_protos.h"
#include <epan/prefs.h>
#include "filter_dlg.h"
#include "layout_prefs.h"
#include "color.h"
#include "color_filters.h"
#include "print.h"
#include "simple_dialog.h"
#include "register.h"
#include <epan/prefs-int.h>
#include "ringbuffer.h"
#include "../ui_util.h"     /* beware: ui_util.h exists twice! */
#include <epan/tap.h>
#include "util.h"
#include "clopts_common.h"
#include "version_info.h"
#include "merge.h"

#ifdef HAVE_LIBPCAP
#include <pcap.h>
#include "pcap-util.h"
#include "capture.h"
#endif

#ifdef _WIN32
#include "capture-wpcap.h"
#endif

#if GTK_MAJOR_VERSION < 2 && GTK_MINOR_VERSION < 3
#include "ethclist.h"
#endif

/* GTK related */
#include "statusbar.h"
#include "alert_box.h"
#include "dlg_utils.h"
#include "gtkglobals.h"
#include "colors.h"
#include "ui_util.h"        /* beware: ui_util.h exists twice! */
#include "compat_macros.h"

#include "main.h"
#include "menu.h"
#include "../main_window.h"
#include "../menu.h"
#include "file_dlg.h"
#include <epan/column.h>
#include "proto_draw.h"
#include "keys.h"
#include "packet_win.h"
#include "toolbar.h"
#include "find_dlg.h"
#include "packet_list.h"
#include "recent.h"
#include "follow_dlg.h"
#include "font_utils.h"
#include "about_dlg.h"
#include "help_dlg.h"
#include "decode_as_dlg.h"
#include "webbrowser.h"
#include "capture_dlg.h"
#if 0
#include "../image/eicon3d64.xpm"
#endif
#include "capture_ui_utils.h"



/*
 * File under personal preferences directory in which GTK settings for
 * Ethereal are stored.
 */
#define RC_FILE "gtkrc"

#ifdef HAVE_LIBPCAP
#define DEF_READY_MESSAGE " Ready to load or capture"
#else
#define DEF_READY_MESSAGE " Ready to load file"
#endif

capture_file cfile;
GtkWidget   *main_display_filter_widget=NULL;
GtkWidget   *top_level = NULL, *tree_view, *byte_nb_ptr, *tv_scrollw;
static GtkWidget   *main_pane_v1, *main_pane_v2, *main_pane_h1, *main_pane_h2;
static GtkWidget   *main_first_pane, *main_second_pane;
static GtkWidget   *status_pane;
static GtkWidget   *menubar, *main_vbox, *main_tb, *pkt_scrollw, *stat_hbox, *filter_tb;
static GtkWidget	*info_bar;
static GtkWidget    *packets_bar = NULL;
static GtkWidget    *welcome_pane;
static guint    main_ctx, file_ctx, help_ctx;
static guint        packets_ctx;
static gchar        *packets_str = NULL;
GString *comp_info_str, *runtime_info_str;
gchar       *ethereal_path = NULL;
gboolean have_capture_file = FALSE; /* XXX - is there an aquivalent in cfile? */

#ifdef _WIN32
static gboolean has_console;	/* TRUE if app has console */
/*static void create_console(void);*/
static void destroy_console(void);
static void console_log_handler(const char *log_domain,
    GLogLevelFlags log_level, const char *message, gpointer user_data);
#endif

#ifdef HAVE_LIBPCAP
static gboolean list_link_layer_types;
capture_options global_capture_opts;
capture_options *capture_opts = &global_capture_opts;
#endif


static void create_main_window(gint, gint, gint, e_prefs*);
static void show_main_window(gboolean);
static void file_quit_answered_cb(gpointer dialog, gint btn, gpointer data);
static void main_save_window_geometry(GtkWidget *widget);

#define E_DFILTER_CM_KEY          "display_filter_combo"
#define E_DFILTER_FL_KEY          "display_filter_list"



/* Match selected byte pattern */
static void
match_selected_cb_do(gpointer data, int action, gchar *text)
{
    GtkWidget		*filter_te;
    char		*cur_filter, *new_filter;

    if (!text)
	return;
    g_assert(data);
    filter_te = OBJECT_GET_DATA(data, E_DFILTER_TE_KEY);
    g_assert(filter_te);

    cur_filter = gtk_editable_get_chars(GTK_EDITABLE(filter_te), 0, -1);

    switch (action&MATCH_SELECTED_MASK) {

    case MATCH_SELECTED_REPLACE:
	new_filter = g_strdup(text);
	break;

    case MATCH_SELECTED_AND:
	if ((!cur_filter) || (0 == strlen(cur_filter)))
	    new_filter = g_strdup(text);
	else
	    new_filter = g_strconcat("(", cur_filter, ") && (", text, ")", NULL);
	break;

    case MATCH_SELECTED_OR:
	if ((!cur_filter) || (0 == strlen(cur_filter)))
	    new_filter = g_strdup(text);
	else
	    new_filter = g_strconcat("(", cur_filter, ") || (", text, ")", NULL);
	break;

    case MATCH_SELECTED_NOT:
	new_filter = g_strconcat("!(", text, ")", NULL);
	break;

    case MATCH_SELECTED_AND_NOT:
	if ((!cur_filter) || (0 == strlen(cur_filter)))
	    new_filter = g_strconcat("!(", text, ")", NULL);
	else
	    new_filter = g_strconcat("(", cur_filter, ") && !(", text, ")", NULL);
	break;

    case MATCH_SELECTED_OR_NOT:
	if ((!cur_filter) || (0 == strlen(cur_filter)))
	    new_filter = g_strconcat("!(", text, ")", NULL);
	else
	    new_filter = g_strconcat("(", cur_filter, ") || !(", text, ")", NULL);
	break;

    default:
	g_assert_not_reached();
	new_filter = NULL;
	break;
    }

    /* Free up the copy we got of the old filter text. */
    g_free(cur_filter);

    /* create a new one and set the display filter entry accordingly */
    gtk_entry_set_text(GTK_ENTRY(filter_te), new_filter);

    /* Run the display filter so it goes in effect. */
    if (action&MATCH_SELECTED_APPLY_NOW)
	main_filter_packets(&cfile, new_filter, FALSE);

    /* Free up the new filter text. */
    g_free(new_filter);

    /* Free up the generated text we were handed. */
    g_free(text);
}

void
match_selected_ptree_cb(GtkWidget *w, gpointer data, MATCH_SELECTED_E action)
{
    if (cfile.finfo_selected)
	match_selected_cb_do((data ? data : w),
	    action,
	    proto_construct_dfilter_string(cfile.finfo_selected, cfile.edt));
}


static void selected_ptree_info_answered_cb(gpointer dialog _U_, gint btn, gpointer data)
{
    gchar *selected_proto_url;
    gchar *proto_abbrev = data;


    switch(btn) {
    case(ESD_BTN_OK):
        if (cfile.finfo_selected) {
            /* open wiki page using the protocol abbreviation */
            selected_proto_url = g_strdup_printf("http://wiki.ethereal.com/Protocols/%s", proto_abbrev);
            browser_open_url(selected_proto_url);
            g_free(selected_proto_url);
        }
        break;
    case(ESD_BTN_CANCEL):
        break;
    default:
        g_assert_not_reached();
    }
}


void 
selected_ptree_info_cb(GtkWidget *widget _U_, gpointer data _U_)
{
    int field_id;
    gchar *proto_abbrev;
    gpointer  dialog;


    if (cfile.finfo_selected) {
        /* convert selected field to protocol abbreviation */
        /* XXX - could this conversion be simplified? */
        field_id = cfile.finfo_selected->hfinfo->id;
        /* if the selected field isn't a protocol, get it's parent */
        if(!proto_registrar_is_protocol(field_id)) {
            field_id = proto_registrar_get_parent(cfile.finfo_selected->hfinfo->id);
        }

        proto_abbrev = proto_registrar_get_abbrev(field_id);

        /* ask the user if the wiki page really should be opened */
        dialog = simple_dialog(ESD_TYPE_CONFIRMATION, ESD_BTNS_OK_CANCEL,
                    PRIMARY_TEXT_START "Open Ethereal Wiki page of protocol \"%s\"?" PRIMARY_TEXT_END "\n"
                    "\n"
                    "This will open the \"%s\" related Ethereal Wiki page in your Web browser.\n"
                    "\n"
                    "The Ethereal Wiki is a collaborative approach to provide information\n"
                    "about Ethereal in several ways (not limited to protocol specifics).\n"
                    "\n"
                    "This Wiki is new, so the page of the selected protocol\n"
                    "may not exist and/or may not contain valuable information.\n"
                    "\n"
                    "As everyone can edit the Wiki and add new content (or extend existing),\n"
                    "you are encouraged to add information if you can.\n"
                    "\n"
                    "Hint 1: If you are new to wiki editing, try out editing the Sandbox first!\n"
                    "\n"
                    "Hint 2: If you want to add a new protocol page, you should use the ProtocolTemplate,\n"
                    "which will save you a lot of editing and will give a consistent look over the pages.",
                    proto_abbrev, proto_abbrev);
        simple_dialog_set_cb(dialog, selected_ptree_info_answered_cb, proto_abbrev);
    }
}


void 
selected_ptree_ref_cb(GtkWidget *widget _U_, gpointer data _U_)
{
    int field_id;
    gchar *proto_abbrev;
    gchar *selected_proto_url;


    if (cfile.finfo_selected) {
        /* convert selected field to protocol abbreviation */
        /* XXX - could this conversion be simplified? */
        field_id = cfile.finfo_selected->hfinfo->id;
        /* if the selected field isn't a protocol, get it's parent */
        if(!proto_registrar_is_protocol(field_id)) {
            field_id = proto_registrar_get_parent(cfile.finfo_selected->hfinfo->id);
        }

        proto_abbrev = proto_registrar_get_abbrev(field_id);

        /* open reference page using the protocol abbreviation */
        selected_proto_url = g_strdup_printf("http://www.ethereal.com/docs/dfref/%c/%s", proto_abbrev[0], proto_abbrev);
        browser_open_url(selected_proto_url);
        g_free(selected_proto_url);
    }
}


static gchar *
get_text_from_packet_list(gpointer data)
{
    gint	row = GPOINTER_TO_INT(OBJECT_GET_DATA(data, E_MPACKET_LIST_ROW_KEY));
    gint	column = GPOINTER_TO_INT(OBJECT_GET_DATA(data, E_MPACKET_LIST_COL_KEY));
    frame_data *fdata = (frame_data *)packet_list_get_row_data(row);
    epan_dissect_t *edt;
    gchar      *buf=NULL;
    int         len;
    int         err;
    gchar       *err_info;

    if (fdata != NULL) {
	if (!wtap_seek_read(cfile.wth, fdata->file_off, &cfile.pseudo_header,
		       cfile.pd, fdata->cap_len, &err, &err_info)) {
	    simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
		          cf_read_error_message(err, err_info), cfile.filename);
	    return NULL;
	}

	edt = epan_dissect_new(FALSE, FALSE);
	epan_dissect_run(edt, &cfile.pseudo_header, cfile.pd, fdata,
			 &cfile.cinfo);
	epan_dissect_fill_in_columns(edt);

	if (strlen(cfile.cinfo.col_expr[column]) != 0 &&
	    strlen(cfile.cinfo.col_expr_val[column]) != 0) {
	    len = strlen(cfile.cinfo.col_expr[column]) +
		  strlen(cfile.cinfo.col_expr_val[column]) + 5;
	    buf = g_malloc0(len);
	    g_snprintf(buf, len, "%s == %s", cfile.cinfo.col_expr[column],
		     cfile.cinfo.col_expr_val[column]);
    	}

	epan_dissect_free(edt);
    }

    return buf;
}

void
match_selected_plist_cb(GtkWidget *w _U_, gpointer data, MATCH_SELECTED_E action)
{
    match_selected_cb_do(data,
        action,
        get_text_from_packet_list(data));
}



/* XXX: use a preference for this setting! */
static guint dfilter_combo_max_recent = 10;

/* add a display filter to the combo box */
/* Note: a new filter string will replace an old identical one */
static gboolean
dfilter_combo_add(GtkWidget *filter_cm, char *s) {
  GList     *li;
  GList     *dfilter_list = OBJECT_GET_DATA(filter_cm, E_DFILTER_FL_KEY);


  /* GtkCombos don't let us get at their list contents easily, so we maintain
     our own filter list, and feed it to gtk_combo_set_popdown_strings when
     a new filter is added. */
    li = g_list_first(dfilter_list);
    while (li) {
        /* If the filter is already in the list, remove the old one and 
		 * append the new one at the latest position (at g_list_append() below) */
		if (li->data && strcmp(s, li->data) == 0) {
          dfilter_list = g_list_remove(dfilter_list, li->data);
		  break;
		}
      li = li->next;
    }

    dfilter_list = g_list_append(dfilter_list, s);
    OBJECT_SET_DATA(filter_cm, E_DFILTER_FL_KEY, dfilter_list);
    gtk_combo_set_popdown_strings(GTK_COMBO(filter_cm), dfilter_list);
    gtk_entry_set_text(GTK_ENTRY(GTK_COMBO(filter_cm)->entry), g_list_last(dfilter_list)->data);

    return TRUE;
}


/* write all non empty display filters (until maximum count) 
 * of the combo box GList to the user's recent file */
void
dfilter_recent_combo_write_all(FILE *rf) {
  GtkWidget *filter_cm = OBJECT_GET_DATA(top_level, E_DFILTER_CM_KEY);
  GList     *dfilter_list = OBJECT_GET_DATA(filter_cm, E_DFILTER_FL_KEY);
  GList     *li;
  guint      max_count = 0;


  /* write all non empty display filter strings to the recent file (until max count) */
  li = g_list_first(dfilter_list);
  while ( li && (max_count++ <= dfilter_combo_max_recent) ) {
    if (strlen(li->data)) {
      fprintf (rf, RECENT_KEY_DISPLAY_FILTER ": %s\n", (char *)li->data);
    }
    li = li->next;
  }
}

/* empty the combobox entry field */
void
dfilter_combo_add_empty(void) {
  GtkWidget *filter_cm = OBJECT_GET_DATA(top_level, E_DFILTER_CM_KEY);

  gtk_entry_set_text(GTK_ENTRY(GTK_COMBO(filter_cm)->entry), "");
}


/* add a display filter coming from the user's recent file to the dfilter combo box */
gboolean
dfilter_combo_add_recent(gchar *s) {
  GtkWidget *filter_cm = OBJECT_GET_DATA(top_level, E_DFILTER_CM_KEY);
  char      *dup;

  dup = g_strdup(s);
  if (!dfilter_combo_add(filter_cm, dup)) {
    g_free(dup);
    return FALSE;
  }

  return TRUE;
}


/* call cf_filter_packets() and add this filter string to the recent filter list */
gboolean
main_filter_packets(capture_file *cf, const gchar *dftext, gboolean force)
{
  GtkCombo  *filter_cm = OBJECT_GET_DATA(top_level, E_DFILTER_CM_KEY);
  GList     *dfilter_list = OBJECT_GET_DATA(filter_cm, E_DFILTER_FL_KEY);
  GList     *li;
  gboolean   add_filter = TRUE;
  gboolean   free_filter = TRUE;
  char      *s;
  cf_status_t cf_status;

  /* we'll crash later on if dftext is NULL */
  g_assert(dftext != NULL);
  
  s = g_strdup(dftext);

  /* GtkCombos don't let us get at their list contents easily, so we maintain
     our own filter list, and feed it to gtk_combo_set_popdown_strings when
     a new filter is added. */
  cf_status = cf_filter_packets(cf, s, force);
  if (cf_status == CF_OK) {
    li = g_list_first(dfilter_list);
    while (li) {
      if (li->data && strcmp(s, li->data) == 0)
        add_filter = FALSE;
      li = li->next;
    }

    if (add_filter) {
      /* trim list size first */
      while (g_list_length(dfilter_list) >= dfilter_combo_max_recent) {
        dfilter_list = g_list_remove(dfilter_list, g_list_first(dfilter_list)->data);
      }

      free_filter = FALSE;
      dfilter_list = g_list_append(dfilter_list, s);
      OBJECT_SET_DATA(filter_cm, E_DFILTER_FL_KEY, dfilter_list);
      gtk_combo_set_popdown_strings(filter_cm, dfilter_list);
      gtk_entry_set_text(GTK_ENTRY(filter_cm->entry), g_list_last(dfilter_list)->data);
    }
  }
  if (free_filter)
    g_free(s);

  return (cf_status == CF_OK);
}


/* Run the current display filter on the current packet set, and
   redisplay. */
static void
filter_activate_cb(GtkWidget *w _U_, gpointer data)
{
  const char *s;

  s = gtk_entry_get_text(GTK_ENTRY(data));

  main_filter_packets(&cfile, s, FALSE);
}

/* redisplay with no display filter */
static void
filter_reset_cb(GtkWidget *w, gpointer data _U_)
{
  GtkWidget *filter_te = NULL;

  if ((filter_te = OBJECT_GET_DATA(w, E_DFILTER_TE_KEY))) {
    gtk_entry_set_text(GTK_ENTRY(filter_te), "");
  }
  main_filter_packets(&cfile, "", FALSE);
}

/* mark as reference time frame */
static void
set_frame_reftime(gboolean set, frame_data *frame, gint row) {
  if (row == -1)
    return;
  if (set) {
    frame->flags.ref_time=1;
  } else {
    frame->flags.ref_time=0;
  }
  cf_reftime_packets(&cfile);
}

void 
reftime_frame_cb(GtkWidget *w _U_, gpointer data _U_, REFTIME_ACTION_E action)
{

  switch(action){
  case REFTIME_TOGGLE:
    if (cfile.current_frame) {
      /* XXX hum, should better have a "cfile->current_row" here ... */
      set_frame_reftime(!cfile.current_frame->flags.ref_time,
	  	     cfile.current_frame,
		     packet_list_find_row_from_data(cfile.current_frame));
    }
    break;
  case REFTIME_FIND_NEXT:
    find_previous_next_frame_with_filter("frame.ref_time", FALSE);
    break;
  case REFTIME_FIND_PREV:
    find_previous_next_frame_with_filter("frame.ref_time", TRUE);
    break;
  }
}

#if GTK_MAJOR_VERSION < 2
static void
tree_view_select_row_cb(GtkCTree *ctree, GList *node, gint column _U_,
                        gpointer user_data _U_)
#else
static void
tree_view_selection_changed_cb(GtkTreeSelection *sel, gpointer user_data _U_)
#endif
{
    field_info   *finfo;
    gchar        *help_str = NULL;
    gchar         len_str[2+10+1+5+1]; /* ", {N} bytes\0",
                                          N < 4294967296 */
    gboolean      has_blurb = FALSE;
    guint         length = 0, byte_len;
    GtkWidget    *byte_view;
    const guint8 *byte_data;
#if GTK_MAJOR_VERSION >= 2
    GtkTreeModel *model;
    GtkTreeIter   iter;
#endif

#if GTK_MAJOR_VERSION >= 2
    /* if nothing is selected */
    if (!gtk_tree_selection_get_selected(sel, &model, &iter))
    {
        /*
         * Which byte view is displaying the current protocol tree
         * row's data?
         */
        byte_view = get_notebook_bv_ptr(byte_nb_ptr);
        if (byte_view == NULL)
            return;	/* none */

        byte_data = get_byte_view_data_and_length(byte_view, &byte_len);
        if (byte_data == NULL)
            return;	/* none */

        cf_unselect_field(&cfile);
        packet_hex_print(GTK_TEXT_VIEW(byte_view), byte_data,
                         cfile.current_frame, NULL, byte_len);
        return;
    }
    gtk_tree_model_get(model, &iter, 1, &finfo, -1);
#else
    g_assert(node);
    finfo = gtk_ctree_node_get_row_data( ctree, GTK_CTREE_NODE(node) );
#endif
    if (!finfo) return;

    set_notebook_page(byte_nb_ptr, finfo->ds_tvb);

    byte_view = get_notebook_bv_ptr(byte_nb_ptr);
    byte_data = get_byte_view_data_and_length(byte_view, &byte_len);
    g_assert(byte_data != NULL);

    cfile.finfo_selected = finfo;
    set_menus_for_selected_tree_row(&cfile);

    if (finfo->hfinfo) {
        if (finfo->hfinfo->blurb != NULL &&
            finfo->hfinfo->blurb[0] != '\0') {
            has_blurb = TRUE;
            length = strlen(finfo->hfinfo->blurb);
        } else {
            length = strlen(finfo->hfinfo->name);
        }
        if (finfo->length == 0) {
            len_str[0] = '\0';
        } else if (finfo->length == 1) {
            strcpy (len_str, ", 1 byte");
        } else {
            g_snprintf (len_str, sizeof len_str, ", %d bytes", finfo->length);
        }
        statusbar_pop_field_msg();	/* get rid of current help msg */
        if (length) {
            help_str = g_strdup_printf("%s (%s)%s",
                    (has_blurb) ? finfo->hfinfo->blurb : finfo->hfinfo->name,
                    finfo->hfinfo->abbrev, len_str);
            statusbar_push_field_msg(help_str);
            g_free(help_str);
        } else {
            /*
             * Don't show anything if the field name is zero-length;
             * the pseudo-field for "proto_tree_add_text()" is such
             * a field, and we don't want "Text (text)" showing up
             * on the status line if you've selected such a field.
             *
             * XXX - there are zero-length fields for which we *do*
             * want to show the field name.
             *
             * XXX - perhaps the name and abbrev field should be null
             * pointers rather than null strings for that pseudo-field,
             * but we'd have to add checks for null pointers in some
             * places if we did that.
             *
             * Or perhaps protocol tree items added with
             * "proto_tree_add_text()" should have -1 as the field index,
             * with no pseudo-field being used, but that might also
             * require special checks for -1 to be added.
             */
            statusbar_push_field_msg("");
        }
    }

#if GTK_MAJOR_VERSION < 2
    packet_hex_print(GTK_TEXT(byte_view), byte_data, cfile.current_frame,
                     finfo, byte_len);
#else
    packet_hex_print(GTK_TEXT_VIEW(byte_view), byte_data, cfile.current_frame,
                     finfo, byte_len);
#endif
}

#if GTK_MAJOR_VERSION < 2
static void
tree_view_unselect_row_cb(GtkCTree *ctree _U_, GList *node _U_, gint column _U_,
                          gpointer user_data _U_)
{
	GtkWidget	*byte_view;
	const guint8	*data;
	guint		len;

	/*
	 * Which byte view is displaying the current protocol tree
	 * row's data?
	 */
	byte_view = get_notebook_bv_ptr(byte_nb_ptr);
	if (byte_view == NULL)
		return;	/* none */

	data = get_byte_view_data_and_length(byte_view, &len);
	if (data == NULL)
		return;	/* none */

	cf_unselect_field(&cfile);
	packet_hex_print(GTK_TEXT(byte_view), data, cfile.current_frame,
		NULL, len);
}
#endif

void collapse_all_cb(GtkWidget *widget _U_, gpointer data _U_) {
  if (cfile.edt->tree)
    collapse_all_tree(cfile.edt->tree, tree_view);
}

void expand_all_cb(GtkWidget *widget _U_, gpointer data _U_) {
  if (cfile.edt->tree)
    expand_all_tree(cfile.edt->tree, tree_view);
}

void expand_tree_cb(GtkWidget *widget _U_, gpointer data _U_) {
#if GTK_MAJOR_VERSION < 2    
  GtkCTreeNode *node;
#else
  GtkTreePath  *path;
#endif

#if GTK_MAJOR_VERSION < 2
  node = gtk_ctree_find_by_row_data(GTK_CTREE(tree_view), NULL, cfile.finfo_selected);
  g_assert(node);
  gtk_ctree_expand_recursive(GTK_CTREE(tree_view), node);
#else
  path = tree_find_by_field_info(GTK_TREE_VIEW(tree_view), cfile.finfo_selected);
  g_assert(path);
  gtk_tree_view_expand_row(GTK_TREE_VIEW(tree_view), path, TRUE);
  gtk_tree_path_free(path);
#endif
}

void resolve_name_cb(GtkWidget *widget _U_, gpointer data _U_) {
  if (cfile.edt->tree) {
    guint32 tmp = g_resolv_flags;
    g_resolv_flags = RESOLV_ALL;
    proto_tree_draw(cfile.edt->tree, tree_view);
    g_resolv_flags = tmp;
  }
}

/*
 * Push a message referring to file access onto the statusbar.
 */
void
statusbar_push_file_msg(gchar *msg)
{
    /*g_warning("statusbar_push: %s", msg);*/
	gtk_statusbar_push(GTK_STATUSBAR(info_bar), file_ctx, msg);
}

/*
 * Pop a message referring to file access off the statusbar.
 */
void
statusbar_pop_file_msg(void)
{
    /*g_warning("statusbar_pop");*/
	gtk_statusbar_pop(GTK_STATUSBAR(info_bar), file_ctx);
}

/*
 * XXX - do we need multiple statusbar contexts?
 */

/*
 * Push a message referring to the currently-selected field onto the statusbar.
 */
void
statusbar_push_field_msg(gchar *msg)
{
	gtk_statusbar_push(GTK_STATUSBAR(info_bar), help_ctx, msg);
}

/*
 * Pop a message referring to the currently-selected field off the statusbar.
 */
void
statusbar_pop_field_msg(void)
{
	gtk_statusbar_pop(GTK_STATUSBAR(info_bar), help_ctx);
}

/*
 * update the packets statusbar to the current values
 */
void packets_bar_update(void)
{

    if(packets_bar) {
        /* remove old status */
        if(packets_str) {
            g_free(packets_str);
	        gtk_statusbar_pop(GTK_STATUSBAR(packets_bar), packets_ctx);
        }

        /* do we have any packets? */
        if(cfile.count) {
            if(cfile.drops_known) {
                packets_str = g_strdup_printf(" P: %u D: %u M: %u Drops: %u", 
                    cfile.count, cfile.displayed_count, cfile.marked_count, cfile.drops);
            } else {
                packets_str = g_strdup_printf(" P: %u D: %u M: %u", 
                    cfile.count, cfile.displayed_count, cfile.marked_count);
            }
        } else {
            packets_str = g_strdup(" No Packets");
        }
	    gtk_statusbar_push(GTK_STATUSBAR(packets_bar), packets_ctx, packets_str);
    }
}

void
main_set_for_capture_file(gboolean have_capture_file_in)
{
    have_capture_file = have_capture_file_in;

    main_widgets_show_or_hide();
}

gboolean
main_do_quit(void)
{
	/* get the current geometry, before writing it to disk */
	main_save_window_geometry(top_level);

	/* write user's recent file to disk
	 * It is no problem to write this file, even if we do not quit */
	write_recent();

	/* XXX - should we check whether the capture file is an
	   unsaved temporary file for a live capture and, if so,
	   pop up a "do you want to exit without saving the capture
	   file?" dialog, and then just return, leaving said dialog
	   box to forcibly quit if the user clicks "OK"?

	   If so, note that this should be done in a subroutine that
	   returns TRUE if we do so, and FALSE otherwise, and if it
	   returns TRUE we should return TRUE without nuking anything.

	   Note that, if we do that, we might also want to check if
	   an "Update list of packets in real time" capture is in
	   progress and, if so, ask whether they want to terminate
	   the capture and discard it, and return TRUE, before nuking
	   any child capture, if they say they don't want to do so. */

#ifdef HAVE_LIBPCAP
	/* Nuke any child capture in progress. */
	capture_kill_child(capture_opts);
#endif

	/* Are we in the middle of reading a capture? */
	if (cfile.state == FILE_READ_IN_PROGRESS) {
		/* Yes, so we can't just close the file and quit, as
		   that may yank the rug out from under the read in
		   progress; instead, just set the state to
		   "FILE_READ_ABORTED" and return - the code doing the read
		   will check for that and, if it sees that, will clean
		   up and quit. */
		cfile.state = FILE_READ_ABORTED;

		/* Say that the window should *not* be deleted;
		   that'll be done by the code that cleans up. */
		return TRUE;
	} else {
		/* Close any capture file we have open; on some OSes, you
		   can't unlink a temporary capture file if you have it
		   open.
		   "cf_close()" will unlink it after closing it if
		   it's a temporary file.

		   We do this here, rather than after the main loop returns,
		   as, after the main loop returns, the main window may have
		   been destroyed (if this is called due to a "destroy"
		   even on the main window rather than due to the user
		   selecting a menu item), and there may be a crash
		   or other problem when "cf_close()" tries to
		   clean up stuff in the main window.

		   XXX - is there a better place to put this?
		   Or should we have a routine that *just* closes the
		   capture file, and doesn't do anything with the UI,
		   which we'd call here, and another routine that
		   calls that routine and also cleans up the UI, which
		   we'd call elsewhere? */
		cf_close(&cfile);

		/* Exit by leaving the main loop, so that any quit functions
		   we registered get called. */
		gtk_main_quit();

		/* Say that the window should be deleted. */
		return FALSE;
	}
}

static gboolean
main_window_delete_event_cb(GtkWidget *widget _U_, GdkEvent *event _U_, gpointer data _U_)
{
  gpointer dialog;

  if((cfile.state != FILE_CLOSED) && !cfile.user_saved && prefs.gui_ask_unsaved) {
#if GTK_MAJOR_VERSION >= 2
    gtk_window_present(GTK_WINDOW(top_level));
#endif
    /* user didn't saved his current file, ask him */
    dialog = simple_dialog(ESD_TYPE_CONFIRMATION, ESD_BTNS_SAVE_DONTSAVE_CANCEL,
                PRIMARY_TEXT_START "Save capture file before program quit?" PRIMARY_TEXT_END "\n\n"
                "If you quit the program without saving, your capture data will be discarded.");
    simple_dialog_set_cb(dialog, file_quit_answered_cb, NULL);
    return TRUE;
  } else {
    /* unchanged file, just exit */
    /* "main_do_quit()" indicates whether the main window should be deleted. */
    return main_do_quit();
  }
}



static void
main_load_window_geometry(GtkWidget *widget)
{
    window_geometry_t geom;

    geom.set_pos        = prefs.gui_geometry_save_position;
    geom.x              = recent.gui_geometry_main_x;
    geom.y              = recent.gui_geometry_main_y;
    geom.set_size       = prefs.gui_geometry_save_size;
    if (recent.gui_geometry_main_width > 0 &&
        recent.gui_geometry_main_height > 0) {
        geom.width          = recent.gui_geometry_main_width;
        geom.height         = recent.gui_geometry_main_height;
        geom.set_maximized  = prefs.gui_geometry_save_maximized;
    } else {
        /* We assume this means the width and height weren't set in
           the "recent" file (or that there is no "recent" file),
           and weren't set to a default value, so we don't set the
           size.  (The "recent" file code rejects non-positive width
           and height values.) */
       geom.set_size = FALSE;
    }
    geom.maximized      = recent.gui_geometry_main_maximized;

    window_set_geometry(widget, &geom);

#if GTK_MAJOR_VERSION >= 2
    /* XXX - rename recent settings? */
    if (recent.gui_geometry_main_upper_pane)
        gtk_paned_set_position(GTK_PANED(main_first_pane),  recent.gui_geometry_main_upper_pane);
    if (recent.gui_geometry_main_lower_pane)
        gtk_paned_set_position(GTK_PANED(main_second_pane), recent.gui_geometry_main_lower_pane);
    if (recent.gui_geometry_status_pane)
        gtk_paned_set_position(GTK_PANED(status_pane),      recent.gui_geometry_status_pane);
#endif
}


static void
main_save_window_geometry(GtkWidget *widget)
{
    window_geometry_t geom;

    window_get_geometry(widget, &geom);

    if (prefs.gui_geometry_save_position) {
        recent.gui_geometry_main_x = geom.x;
	    recent.gui_geometry_main_y = geom.y;
    }

    if (prefs.gui_geometry_save_size) {
        recent.gui_geometry_main_width  = geom.width, 
        recent.gui_geometry_main_height = geom.height;
    }

#if GTK_MAJOR_VERSION >= 2
    if(prefs.gui_geometry_save_maximized) {
        recent.gui_geometry_main_maximized = geom.maximized;
    }

    recent.gui_geometry_main_upper_pane     = gtk_paned_get_position(GTK_PANED(main_first_pane));
    recent.gui_geometry_main_lower_pane     = gtk_paned_get_position(GTK_PANED(main_second_pane));
    recent.gui_geometry_status_pane         = gtk_paned_get_position(GTK_PANED(status_pane));
#endif
}

static void file_quit_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_exit, NULL);
        break;
    case(ESD_BTN_DONT_SAVE):
        main_do_quit();
        break;
    case(ESD_BTN_CANCEL):
        break;
    default:
        g_assert_not_reached();
    }
}

void
file_quit_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,
                PRIMARY_TEXT_START "Save capture file before program quit?" PRIMARY_TEXT_END "\n\n"
                "If you quit the program without saving, your capture data will be discarded.");
    simple_dialog_set_cb(dialog, file_quit_answered_cb, NULL);
  } else {
    /* unchanged file, just exit */
    main_do_quit();
  }
}

static void
print_usage(gboolean print_ver) {

  FILE *output;

  if (print_ver) {
    output = stdout;
    fprintf(output, "This is GNU " PACKAGE " " VERSION
#ifdef SVNVERSION
	" (" SVNVERSION ")"
#endif
	"\n%s\n\n%s\n",
	comp_info_str->str, runtime_info_str->str);
  } else {
    output = stderr;
  }
#ifdef HAVE_LIBPCAP
  fprintf(output, "\n%s [ -vh ] [ -klLnpQS ] [ -a <capture autostop condition> ] ...\n",
	  PACKAGE);
  fprintf(output, "\t[ -b <ringbuffer files options> ] ...]\n");
  fprintf(output, "\t[ -B <byte view height> ] [ -c <count> ] [ -f <capture filter> ]\n");
  fprintf(output, "\t[ -i <interface> ] [ -m <medium font> ] [ -N <resolving> ]\n");
  fprintf(output, "\t[ -o <preference setting> ] ... [ -P <packet list height> ]\n");
  fprintf(output, "\t[ -r <infile> ] [ -R <read filter> ] [ -s <snaplen> ] \n");
  fprintf(output, "\t[ -t <time stamp format> ] [ -T <tree view height> ]\n");
  fprintf(output, "\t[ -w <savefile> ] [ -y <link type> ] [ -z <statistics string> ]\n");
  fprintf(output, "\t[ <infile> ]\n");
#else
  fprintf(output, "\n%s [ -vh ] [ -n ] [ -B <byte view height> ] [ -m <medium font> ]\n",
	  PACKAGE);
  fprintf(output, "\t[ -N <resolving> ] [ -o <preference setting> ...\n");
  fprintf(output, "\t[ -P <packet list height> ] [ -r <infile> ] [ -R <read filter> ]\n");
  fprintf(output, "\t[ -t <time stamp format> ] [ -T <tree view height> ]\n");
  fprintf(output, "\t[ -z <statistics string> ] [ <infile> ]\n");
#endif
}

static void
show_version(void)
{
#ifdef _WIN32
  create_console();
#endif

  printf(PACKAGE " " VERSION
#ifdef SVNVERSION
      " (" SVNVERSION ")"
#endif
      "\n%s\n\n%s\n",
      comp_info_str->str, runtime_info_str->str);
}

#if defined(_WIN32) || GTK_MAJOR_VERSION < 2 || ! defined USE_THREADS
/* 
   Once every 3 seconds we get a callback here which we use to update
   the tap extensions. Since Gtk1 is single threaded we dont have to
   worry about any locking or critical regions.
 */
static gint
update_cb(gpointer data _U_)
{
	draw_tap_listeners(FALSE);
	return 1;
}
#else

/* if these three functions are copied to gtk1 ethereal, since gtk1 does not
   use threads all updte_thread_mutex can be dropped and protect/unprotect 
   would just be empty functions.

   This allows gtk2-rpcstat.c and friends to be copied unmodified to 
   gtk1-ethereal and it will just work.
 */
static GStaticMutex update_thread_mutex = G_STATIC_MUTEX_INIT;
gpointer
update_thread(gpointer data _U_)
{
    while(1){
        GTimeVal tv1, tv2;
        g_get_current_time(&tv1);
        g_static_mutex_lock(&update_thread_mutex);
        gdk_threads_enter();
        draw_tap_listeners(FALSE);
        gdk_threads_leave();
        g_static_mutex_unlock(&update_thread_mutex);
        g_thread_yield();
        g_get_current_time(&tv2);
        if( ((tv1.tv_sec + 2) * 1000000 + tv1.tv_usec) >
            (tv2.tv_sec * 1000000 + tv2.tv_usec) ){
            g_usleep(((tv1.tv_sec + 2) * 1000000 + tv1.tv_usec) -
                     (tv2.tv_sec * 1000000 + tv2.tv_usec));
        }
    }
    return NULL;
}
#endif
void
protect_thread_critical_region(void)
{
#if !defined(_WIN32) && GTK_MAJOR_VERSION >= 2 && defined USE_THREADS
    g_static_mutex_lock(&update_thread_mutex);
#endif
}
void
unprotect_thread_critical_region(void)
{
#if !defined(_WIN32) && GTK_MAJOR_VERSION >= 2 && defined USE_THREADS
    g_static_mutex_unlock(&update_thread_mutex);
#endif
}

/* Set the file name in the status line, in the name for the main window,
   and in the name for the main window's icon. */
static void
set_display_filename(capture_file *cf)
{
  const gchar *name_ptr;
  size_t       msg_len;
  static const gchar done_fmt[] = " File: %s %s %02u:%02u:%02u";
  gchar       *done_msg;
  gchar       *win_name_fmt = "%s - Ethereal";
  gchar       *win_name;
  gchar       *size_str;

  name_ptr = cf_get_display_name(cf);
	
  if (!cf->is_tempfile && cf->filename) {
    /* Add this filename to the list of recent files in the "Recent Files" submenu */
    add_menu_recent_capture_file(cf->filename);
  }

  if (cf->f_len/1024/1024 > 10) {
    size_str = g_strdup_printf("%ld MB", cf->f_len/1024/1024);
  } else if (cf->f_len/1024 > 10) {
    size_str = g_strdup_printf("%ld KB", cf->f_len/1024);
  } else {
    size_str = g_strdup_printf("%ld Bytes", cf->f_len);
  }

  done_msg = g_strdup_printf(done_fmt, name_ptr, size_str,
    cf->esec/3600, cf->esec%3600/60, cf->esec%60);
  g_free(size_str);
  statusbar_push_file_msg(done_msg);
  g_free(done_msg);

  msg_len = strlen(name_ptr) + strlen(win_name_fmt) + 1;
  win_name = g_malloc(msg_len);
  snprintf(win_name, msg_len, win_name_fmt, name_ptr);
  set_main_window_name(win_name);
  g_free(win_name);
}


static void
main_cf_cb_file_closed(capture_file *cf)
{
    /* Destroy all windows, which refer to the
       capture file we're closing. */
    destroy_cfile_wins();

    /* Clear any file-related status bar messages.
       XXX - should be "clear *ALL* file-related status bar messages;
       will there ever be more than one on the stack? */
    statusbar_pop_file_msg();

    /* go back to "No packets" */
    packets_bar_update();

    /* Restore the standard title bar message. */
    set_main_window_name("The Ethereal Network Analyzer");

    /* Disable all menu items that make sense only if you have a capture. */
    set_menus_for_capture_file(FALSE);
    set_menus_for_unsaved_capture_file(FALSE);
    set_menus_for_captured_packets(FALSE);
    set_menus_for_selected_packet(cf);
    set_menus_for_capture_in_progress(FALSE);
    set_menus_for_selected_tree_row(cf);

    /* Set up main window for no capture file. */
    main_set_for_capture_file(FALSE);
}

static void
main_cf_cb_file_read_start(capture_file *cf)
{
  const gchar *name_ptr;
  gchar       *load_msg;

  name_ptr = get_basename(cf->filename);

  load_msg = g_strdup_printf(" Loading: %s", name_ptr);
  statusbar_push_file_msg(load_msg);
  g_free(load_msg);
}

static void
main_cf_cb_file_read_finished(capture_file *cf)
{
    statusbar_pop_file_msg();
    set_display_filename(cf);

    /* Enable menu items that make sense if you have a capture file you've
     finished reading. */
    set_menus_for_capture_file(TRUE);
    set_menus_for_unsaved_capture_file(!cf->user_saved);

    /* Enable menu items that make sense if you have some captured packets. */
    set_menus_for_captured_packets(TRUE);

    /* Set up main window for a capture file. */
    main_set_for_capture_file(TRUE);
}

#ifdef HAVE_LIBPCAP
static void
main_cf_cb_live_capture_update_started(capture_options *capture_opts)
{
    gchar *capture_msg;
    gchar *title;


    if(capture_opts->iface) {
        title = g_strdup_printf("%s: Capturing - Ethereal",
                            get_interface_descriptive_name(capture_opts->iface));
    } else {
        title = g_strdup_printf("Capturing - Ethereal");
    }
    set_main_window_name(title);
    g_free(title);

    /* Disable menu items that make no sense if you're currently running
       a capture. */
    set_menus_for_capture_in_progress(TRUE);

    /* Enable menu items that make sense if you have some captured
       packets (yes, I know, we don't have any *yet*). */
    set_menus_for_captured_packets(TRUE);

    capture_msg = g_strdup_printf(" %s: <live capture in progress> to file: %s", 
        get_interface_descriptive_name(capture_opts->iface), 
        (capture_opts->save_file) ? capture_opts->save_file : "");

    statusbar_push_file_msg(capture_msg);

    g_free(capture_msg);

    /* Set up main window for a capture file. */
    main_set_for_capture_file(TRUE);
}

static void
main_cf_cb_live_capture_update_continue(capture_file *cf)
{
    gchar *capture_msg;


    statusbar_pop_file_msg();

    if (cf->f_len/1024/1024 > 10) {
        capture_msg = g_strdup_printf(" %s: <live capture in progress> File: %s %ld MB", 
            get_interface_descriptive_name(capture_opts->iface), 
            capture_opts->save_file,
            cf->f_len/1024/1024);
    } else if (cf->f_len/1024 > 10) {
        capture_msg = g_strdup_printf(" %s: <live capture in progress> File: %s %ld KB", 
            get_interface_descriptive_name(capture_opts->iface), 
            capture_opts->save_file,
            cf->f_len/1024);
    } else {
        capture_msg = g_strdup_printf(" %s: <live capture in progress> File: %s %ld Bytes", 
            get_interface_descriptive_name(capture_opts->iface), 
            capture_opts->save_file,
            cf->f_len);
    }

    statusbar_push_file_msg(capture_msg);
}

static void
main_cf_cb_live_capture_update_finished(capture_file *cf)
{
    /* Pop the "<live capture in progress>" message off the status bar. */
    statusbar_pop_file_msg();

    set_display_filename(cf);

    /* Enable menu items that make sense if you're not currently running
     a capture. */
    set_menus_for_capture_in_progress(FALSE);

    /* Enable menu items that make sense if you have a capture file
     you've finished reading. */
    set_menus_for_capture_file(TRUE);
    set_menus_for_unsaved_capture_file(!cf->user_saved);

    /* Set up main window for a capture file. */
    main_set_for_capture_file(TRUE);
}

static void
main_cf_cb_live_capture_fixed_started(capture_options *capture_opts)
{
    gchar *capture_msg;
    gchar *title;


    title = g_strdup_printf("%s: Capturing - Ethereal",
                            get_interface_descriptive_name(capture_opts->iface));
    set_main_window_name(title);
    g_free(title);

    /* Disable menu items that make no sense if you're currently running
       a capture. */
    set_menus_for_capture_in_progress(TRUE);

    /* Enable menu items that make sense if you have some captured
       packets (yes, I know, we don't have any *yet*). */
    /*set_menus_for_captured_packets(TRUE);*/

    capture_msg = g_strdup_printf(" %s: <live capture in progress> to file: %s", 
        get_interface_descriptive_name(capture_opts->iface), 
        (capture_opts->save_file) ? capture_opts->save_file : "");

    statusbar_push_file_msg(capture_msg);
    gtk_statusbar_push(GTK_STATUSBAR(packets_bar), packets_ctx, " <capturing>");

    g_free(capture_msg);

    /* Don't set up main window for a capture file. */
    main_set_for_capture_file(FALSE);
}

static void
main_cf_cb_live_capture_fixed_finished(capture_file *cf _U_)
{
    /* Pop the "<live capture in progress>" message off the status bar. */
    statusbar_pop_file_msg();

    /* Pop the "<capturing>" message off the status bar */
	gtk_statusbar_pop(GTK_STATUSBAR(packets_bar), packets_ctx);

    /*set_display_filename(cf);*/

    /* Enable menu items that make sense if you're not currently running
     a capture. */
    set_menus_for_capture_in_progress(FALSE);

    /* We don't have loaded the capture file, this will be done later.
     * For now we still have simply a blank screen. */
}
#endif

static void
main_cf_cb_packet_selected(gpointer data)
{
    capture_file *cf = data;

    /* Display the GUI protocol tree and hex dump.
      XXX - why do we dump core if we call "proto_tree_draw()"
      before calling "add_byte_views()"? */
    add_main_byte_views(cf->edt);
    main_proto_tree_draw(cf->edt->tree);

    /* A packet is selected. */
    set_menus_for_selected_packet(cf);
}

static void
main_cf_cb_packet_unselected(capture_file *cf)
{
    /* Clear out the display of that packet. */
    clear_tree_and_hex_views();

    /* No packet is selected. */
    set_menus_for_selected_packet(cf);
}

static void
main_cf_cb_field_unselected(capture_file *cf)
{
    statusbar_pop_field_msg();
    set_menus_for_selected_tree_row(cf);
}

static void
main_cf_cb_file_safe_started(gchar * filename)
{
    const gchar  *name_ptr;
    gchar        *save_msg;

    name_ptr = get_basename(filename);

    save_msg = g_strdup_printf(" Saving: %s...", name_ptr);

    statusbar_push_file_msg(save_msg);
    g_free(save_msg);
}

static void
main_cf_cb_file_safe_finished(gpointer data _U_)
{
    /* Pop the "Saving:" message off the status bar. */
    statusbar_pop_file_msg();
}

static void
main_cf_cb_file_safe_failed(gpointer data _U_)
{
    /* Pop the "Saving:" message off the status bar. */
    statusbar_pop_file_msg();
}

static void
main_cf_cb_file_safe_reload_finished(gpointer data _U_)
{
    set_menus_for_unsaved_capture_file(FALSE);
}

void main_cf_callback(gint event, gpointer data, gpointer user_data _U_)
{
    switch(event) {
    case(cf_cb_file_closed):
        main_cf_cb_file_closed(data);
        break;
    case(cf_cb_file_read_start):
        main_cf_cb_file_read_start(data);
        break;
    case(cf_cb_file_read_finished):
        main_cf_cb_file_read_finished(data);
        break;
#ifdef HAVE_LIBPCAP
    case(cf_cb_live_capture_update_started):
        main_cf_cb_live_capture_update_started(data);
        break;
    case(cf_cb_live_capture_update_continue):
        main_cf_cb_live_capture_update_continue(data);
        break;
    case(cf_cb_live_capture_fixed_started):
        main_cf_cb_live_capture_fixed_started(data);
        break;
    case(cf_cb_live_capture_update_finished):
        main_cf_cb_live_capture_update_finished(data);
        break;
    case(cf_cb_live_capture_fixed_finished):
        main_cf_cb_live_capture_fixed_finished(data);
        break;
#endif
    case(cf_cb_packet_selected):
        main_cf_cb_packet_selected(data);
        break;
    case(cf_cb_packet_unselected):
        main_cf_cb_packet_unselected(data);
        break;
    case(cf_cb_field_unselected):
        main_cf_cb_field_unselected(data);
        break;
    case(cf_cb_file_safe_started):
        main_cf_cb_file_safe_started(data);
        break;
    case(cf_cb_file_safe_finished):
        main_cf_cb_file_safe_finished(data);
        break;
    case(cf_cb_file_safe_reload_finished):
        main_cf_cb_file_safe_reload_finished(data);
        break;
    case(cf_cb_file_safe_failed):
        main_cf_cb_file_safe_failed(data);
        break;
    default:
        g_warning("main_cf_callback: event %u unknown", event);
        g_assert_not_reached();
    }
}

/* And now our feature presentation... [ fade to music ] */
int
main(int argc, char *argv[])
{
#ifdef HAVE_LIBPCAP
  const char          *command_name;
#endif
  char                *s;
  int                  i;
  int                  opt;
  extern char         *optarg;
  gboolean             arg_error = FALSE;

#ifdef _WIN32
  WSADATA 	       wsaData;
#endif  /* _WIN32 */

  char                *rf_path;
  int                  rf_open_errno;
  char                *gpf_path, *pf_path;
  char                *cf_path, *df_path;
  char                *gdp_path, *dp_path;
  int                  gpf_open_errno, gpf_read_errno;
  int                  pf_open_errno, pf_read_errno;
  int                  cf_open_errno, df_open_errno;
  int                  gdp_open_errno, gdp_read_errno;
  int                  dp_open_errno, dp_read_errno;
  int                  err;
#ifdef HAVE_LIBPCAP
  gboolean             start_capture = FALSE;
  GList               *if_list;
  if_info_t           *if_info;
  GList               *lt_list, *lt_entry;
  data_link_info_t    *data_link_info;
  gchar                err_str[PCAP_ERRBUF_SIZE];
  gchar               *cant_get_if_list_errstr;
  gboolean             stats_known;
  struct pcap_stat     stats;
#else
  gboolean             capture_option_specified = FALSE;
#endif
  gint                 pl_size = 280, tv_size = 95, bv_size = 75;
  gchar               *rc_file, *cf_name = NULL, *rfilter = NULL;
  dfilter_t           *rfcode = NULL;
  gboolean             rfilter_parse_failed = FALSE;
  e_prefs             *prefs;
  char                 badopt;
  GtkWidget           *splash_win = NULL;
  gboolean             capture_child; /* True if this is the child for "-S" */

#define OPTSTRING_INIT "a:b:B:c:f:Hhi:klLm:nN:o:pP:Qr:R:Ss:t:T:w:vy:z:"

#ifdef HAVE_LIBPCAP
#ifdef _WIN32
#define OPTSTRING_CHILD "W:Z:"
#else
#define OPTSTRING_CHILD "W:"
#endif  /* _WIN32 */
#else
#define OPTSTRING_CHILD ""
#endif  /* HAVE_LIBPCAP */

  char optstring[sizeof(OPTSTRING_INIT) + sizeof(OPTSTRING_CHILD) - 1] =
    OPTSTRING_INIT;


  /* Set the current locale according to the program environment.
   * We haven't localized anything, but some GTK widgets are localized
   * (the file selection dialogue, for example).
   * This also sets the C-language locale to the native environment. */
  gtk_set_locale();

  /* Let GTK get its args */
  gtk_init (&argc, &argv);

  cf_callback_add(main_cf_callback, NULL);

#if GTK_MAJOR_VERSION < 2 && GTK_MINOR_VERSION < 3
  /* initialize our GTK eth_clist_type */
  init_eth_clist_type();
#endif

  ethereal_path = argv[0];

#ifdef _WIN32
  /* Arrange that if we have no console window, and a GLib message logging
     routine is called to log a message, we pop up a console window.

     We do that by inserting our own handler for all messages logged
     to the default domain; that handler pops up a console if necessary,
     and then calls the default handler. */
  g_log_set_handler(NULL,
		    G_LOG_LEVEL_ERROR|
		    G_LOG_LEVEL_CRITICAL|
		    G_LOG_LEVEL_WARNING|
		    G_LOG_LEVEL_MESSAGE|
		    G_LOG_LEVEL_INFO|
		    G_LOG_LEVEL_DEBUG|
		    G_LOG_FLAG_FATAL|G_LOG_FLAG_RECURSION,
		    console_log_handler, NULL);
#endif

#ifdef HAVE_LIBPCAP
  /* Set the initial values in the capture_opts. This might be overwritten 
     by preference settings and then again by the command line parameters. */
  capture_opts_init(capture_opts, &cfile);

  capture_opts->snaplen             = MIN_PACKET_SIZE;
  capture_opts->has_ring_num_files  = TRUE;

  command_name = get_basename(ethereal_path);
  /* Set "capture_child" to indicate whether this is going to be a child
     process for a "-S" capture. */
  capture_child = (strcmp(command_name, CHILD_NAME) == 0);
  if (capture_child) {
    strcat(optstring, OPTSTRING_CHILD);
  }
#endif

  /* We want a splash screen only if we're not a child process */
    /* We also want it only if we're not being run with "-G".
       XXX - we also don't want it if we're being run with
       "-h" or "-v", as those are options to run Ethereal and just
       have it print stuff to the command line.  That would require
       that we parse the argument list before putting up the splash
       screen, which means we'd need to do so before reading the
       preference files, as that could take enough time that we'd
       want the splash screen up while we're doing that.  Unfortunately,
       that means we'd have to queue up, for example, "-o" options,
       so that we apply them *after* reading the preferences, as
       they're supposed to override saved preferences. */
  if ((argc < 2 || strcmp(argv[1], "-G") != 0)
#ifdef HAVE_LIBPCAP
      && !capture_child
#endif
      ) {
    splash_win = splash_new("Loading Ethereal ...");
  }

  splash_update(splash_win, "Registering dissectors ...");

  /* Register all dissectors; we must do this before checking for the
     "-G" flag, as the "-G" flag dumps information registered by the
     dissectors, and we must do it before we read the preferences, in
     case any dissectors register preferences. */
  epan_init(PLUGIN_DIR,register_all_protocols,register_all_protocol_handoffs,
            failure_alert_box,open_failure_alert_box,read_failure_alert_box);

  splash_update(splash_win, "Registering tap listeners ...");

  /* Register all tap listeners; we do this before we parse the arguments,
     as the "-z" argument can specify a registered tap. */

  /* we register the plugin taps before the other taps because
	  stats_tree taps plugins will be registered as tap listeners
	  by stats_tree_stat.c and need to registered before that */

#ifdef HAVE_PLUGINS
  register_all_plugin_tap_listeners();
#endif

  register_all_tap_listeners();
  
  splash_update(splash_win, "Loading module preferences ...");

  /* Now register the preferences for any non-dissector modules.
     We must do that before we read the preferences as well. */
  prefs_register_modules();

  /* If invoked with the "-G" flag, we dump out information based on
     the argument to the "-G" flag; if no argument is specified,
     for backwards compatibility we dump out a glossary of display
     filter symbols.

     We must do this before calling "gtk_init()", because "gtk_init()"
     tries to open an X display, and we don't want to have to do any X
     stuff just to do a build.

     Given that we call "gtk_init()" before doing the regular argument
     list processing, so that it can handle X and GTK+ arguments and
     remove them from the list at which we look, this means we must do
     this before doing the regular argument list processing, as well.

     This means that:

	you must give the "-G" flag as the first flag on the command line;

	you must give it as "-G", nothing more, nothing less;

	the first argument after the "-G" flag, if present, will be used
	to specify the information to dump;

	arguments after that will not be used. */
  handle_dashG_option(argc, argv, "ethereal");

  /* multithread support currently doesn't seem to work in win32 gtk2.0.6 */
#if !defined(_WIN32) && GTK_MAJOR_VERSION >= 2 && defined(G_THREADS_ENABLED) && defined USE_THREADS
  {
      GThread *ut;
      g_thread_init(NULL);
      gdk_threads_init();
      ut=g_thread_create(update_thread, NULL, FALSE, NULL);
      g_thread_set_priority(ut, G_THREAD_PRIORITY_LOW);
  }
#else  /* _WIN32 || GTK1.2 || !G_THREADS_ENABLED || !USE_THREADS */
  /* this is to keep tap extensions updating once every 3 seconds */
  gtk_timeout_add(3000, (GtkFunction)update_cb,(gpointer)NULL);
#endif /* !_WIN32 && GTK2 && G_THREADS_ENABLED */

#if HAVE_GNU_ADNS
  gtk_timeout_add(750, (GtkFunction) host_name_lookup_process, NULL);
#endif

  splash_update(splash_win, "Loading configuration files ...");

  /* Read the preference files. */
  prefs = read_prefs(&gpf_open_errno, &gpf_read_errno, &gpf_path,
                     &pf_open_errno, &pf_read_errno, &pf_path);
  if (gpf_path != NULL) {
    if (gpf_open_errno != 0) {
      simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
        "Could not open global preferences file\n\"%s\": %s.", gpf_path,
        strerror(gpf_open_errno));
    }
    if (gpf_read_errno != 0) {
      simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
        "I/O error reading global preferences file\n\"%s\": %s.", gpf_path,
        strerror(gpf_read_errno));
    }
  }
  if (pf_path != NULL) {
    if (pf_open_errno != 0) {
      simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
        "Could not open your preferences file\n\"%s\": %s.", pf_path,
        strerror(pf_open_errno));
    }
    if (pf_read_errno != 0) {
      simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
        "I/O error reading your preferences file\n\"%s\": %s.", pf_path,
        strerror(pf_read_errno));
    }
    g_free(pf_path);
    pf_path = NULL;
  }

#ifdef _WIN32
  /* if the user wants a console to be always there, well, we should open one for him */
  if (prefs->gui_console_open == console_open_always) {
    create_console();
  }
#endif

#ifdef HAVE_LIBPCAP
  /* If this is a capture child process, it should pay no attention
     to the "prefs.capture_prom_mode" setting in the preferences file;
     it should do what the parent process tells it to do, and if
     the parent process wants it not to run in promiscuous mode, it'll
     tell it so with a "-p" flag.

     Otherwise, set promiscuous mode from the preferences setting. */
  /* the same applies to other preferences settings as well. */
  if (capture_child) {
    auto_scroll_live             = FALSE;
  } else {
    capture_opts->promisc_mode   = prefs->capture_prom_mode;
    capture_opts->show_info      = prefs->capture_show_info;
    capture_opts->real_time_mode = prefs->capture_real_time;
    auto_scroll_live             = prefs->capture_auto_scroll;
  }

#endif /* HAVE_LIBPCAP */

  /* Set the name resolution code's flags from the preferences. */
  g_resolv_flags = prefs->name_resolve;

  /* Read the capture filter file. */
  read_filter_list(CFILTER_LIST, &cf_path, &cf_open_errno);
  if (cf_path != NULL) {
      simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
        "Could not open your capture filter file\n\"%s\": %s.", cf_path,
        strerror(cf_open_errno));
      g_free(cf_path);
  }

  /* Read the display filter file. */
  read_filter_list(DFILTER_LIST, &df_path, &df_open_errno);
  if (df_path != NULL) {
      simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
        "Could not open your display filter file\n\"%s\": %s.", df_path,
        strerror(df_open_errno));
      g_free(df_path);
  }

  /* Read the disabled protocols file. */
  read_disabled_protos_list(&gdp_path, &gdp_open_errno, &gdp_read_errno,
			    &dp_path, &dp_open_errno, &dp_read_errno);
  if (gdp_path != NULL) {
    if (gdp_open_errno != 0) {
      simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
        "Could not open global disabled protocols file\n\"%s\": %s.",
	gdp_path, strerror(gdp_open_errno));
    }
    if (gdp_read_errno != 0) {
      simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
        "I/O error reading global disabled protocols file\n\"%s\": %s.",
	gdp_path, strerror(gdp_read_errno));
    }
    g_free(gdp_path);
  }
  if (dp_path != NULL) {
    if (dp_open_errno != 0) {
      simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
        "Could not open your disabled protocols file\n\"%s\": %s.", dp_path,
        strerror(dp_open_errno));
    }
    if (dp_read_errno != 0) {
      simple_dialog(ESD_TYPE_WARN, ESD_BTN_OK,
        "I/O error reading your disabled protocols file\n\"%s\": %s.", dp_path,
        strerror(dp_read_errno));
    }
    g_free(dp_path);
  }

  init_cap_file(&cfile);

#ifdef _WIN32
  /* Load wpcap if possible. Do this before collecting the run-time version information */
  load_wpcap();

  /* Start windows sockets */
  WSAStartup( MAKEWORD( 1, 1 ), &wsaData );
#endif  /* _WIN32 */

  /* Assemble the compile-time version information string */
  comp_info_str = g_string_new("Compiled ");
  g_string_append(comp_info_str, "with ");
  g_string_sprintfa(comp_info_str,
#ifdef GTK_MAJOR_VERSION
                    "GTK+ %d.%d.%d", GTK_MAJOR_VERSION, GTK_MINOR_VERSION,
                    GTK_MICRO_VERSION);
#else
                    "GTK+ (version unknown)");
#endif

  g_string_append(comp_info_str, ", ");
  get_compiled_version_info(comp_info_str);

  /* Assemble the run-time version information string */
  runtime_info_str = g_string_new("Running ");
  get_runtime_version_info(runtime_info_str);

  /* Now get our args */
  while ((opt = getopt(argc, argv, optstring)) != -1) {
    switch (opt) {
      /*** capture option specific ***/
      case 'a':        /* autostop criteria */
      case 'b':        /* Ringbuffer option */
      case 'c':        /* Capture xxx packets */
      case 'f':        /* capture filter */
      case 'k':        /* Start capture immediately */
      case 'H':        /* Hide capture info dialog box */
      case 'i':        /* Use interface xxx */
      case 'p':        /* Don't capture in promiscuous mode */
      case 'Q':        /* Quit after capture (just capture to file) */
      case 's':        /* Set the snapshot (capture) length */
      case 'S':        /* "Sync" mode: used for following file ala tail -f */
      case 'w':        /* Write to capture file xxx */
      case 'y':        /* Set the pcap data link type */
#ifdef _WIN32
      /* Hidden option supporting Sync mode */
      case 'Z':        /* Write to pipe FD XXX */
#endif /* _WIN32 */
#ifdef HAVE_LIBPCAP
        capture_opts_add_opt(capture_opts, "ethereal", opt, optarg, &start_capture);
#else
        capture_option_specified = TRUE;
        arg_error = TRUE;
#endif
        break;
#ifdef HAVE_LIBPCAP
      /* This is a hidden option supporting Sync mode, so we don't set
       * the error flags for the user in the non-libpcap case.
       */
      case 'W':        /* Write to capture file FD xxx */
        capture_opts_add_opt(capture_opts, "ethereal", opt, optarg, &start_capture);
	break;
#endif

      /*** all non capture option specific ***/
      case 'B':        /* Byte view pane height */
        bv_size = get_positive_int("ethereal", optarg, "byte view pane height");
        break;
      case 'h':        /* Print help and exit */
	print_usage(TRUE);
	exit(0);
        break;
      case 'l':        /* Automatic scrolling in live capture mode */
#ifdef HAVE_LIBPCAP
        auto_scroll_live = TRUE;
#else
        capture_option_specified = TRUE;
        arg_error = TRUE;
#endif
        break;
      case 'L':        /* Print list of link-layer types and exit */
#ifdef HAVE_LIBPCAP
        list_link_layer_types = TRUE;
#else
        capture_option_specified = TRUE;
        arg_error = TRUE;
#endif
        break;
      case 'm':        /* Fixed-width font for the display */
        if (prefs->PREFS_GUI_FONT_NAME != NULL)
          g_free(prefs->PREFS_GUI_FONT_NAME);
        prefs->PREFS_GUI_FONT_NAME = g_strdup(optarg);
        break;
      case 'n':        /* No name resolution */
        g_resolv_flags = RESOLV_NONE;
        break;
      case 'N':        /* Select what types of addresses/port #s to resolve */
        if (g_resolv_flags == RESOLV_ALL)
          g_resolv_flags = RESOLV_NONE;
        badopt = string_to_name_resolve(optarg, &g_resolv_flags);
        if (badopt != '\0') {
          fprintf(stderr, "ethereal: -N specifies unknown resolving option '%c'; valid options are 'm', 'n', and 't'\n",
			badopt);
          exit(1);
        }
        break;
      case 'o':        /* Override preference from command line */
        switch (prefs_set_pref(optarg)) {

	case PREFS_SET_SYNTAX_ERR:
          fprintf(stderr, "ethereal: Invalid -o flag \"%s\"\n", optarg);
          exit(1);
          break;

        case PREFS_SET_NO_SUCH_PREF:
        case PREFS_SET_OBSOLETE:
          fprintf(stderr, "ethereal: -o flag \"%s\" specifies unknown preference\n",
			optarg);
          exit(1);
          break;
        }
        break;
      case 'P':        /* Packet list pane height */
        pl_size = get_positive_int("ethereal", optarg, "packet list pane height");
        break;
      case 'r':        /* Read capture file xxx */
	/* We may set "last_open_dir" to "cf_name", and if we change
	   "last_open_dir" later, we free the old value, so we have to
	   set "cf_name" to something that's been allocated. */
        cf_name = g_strdup(optarg);
        break;
      case 'R':        /* Read file filter */
        rfilter = optarg;
        break;
      case 't':        /* Time stamp type */
        if (strcmp(optarg, "r") == 0)
          set_timestamp_setting(TS_RELATIVE);
        else if (strcmp(optarg, "a") == 0)
          set_timestamp_setting(TS_ABSOLUTE);
        else if (strcmp(optarg, "ad") == 0)
          set_timestamp_setting(TS_ABSOLUTE_WITH_DATE);
        else if (strcmp(optarg, "d") == 0)
          set_timestamp_setting(TS_DELTA);
        else {
          fprintf(stderr, "ethereal: Invalid time stamp type \"%s\"\n",
            optarg);
          fprintf(stderr, "It must be \"r\" for relative, \"a\" for absolute,\n");
          fprintf(stderr, "\"ad\" for absolute with date, or \"d\" for delta.\n");
          exit(1);
        }
        break;
      case 'T':        /* Tree view pane height */
        tv_size = get_positive_int("ethereal", optarg, "tree view pane height");
        break;
      case 'v':        /* Show version and exit */
        show_version();
#ifdef _WIN32
        destroy_console();
#endif
        exit(0);
        break;
      case 'z':
        /* We won't call the init function for the tap this soon
           as it would disallow MATE's fields (which are registered
           by the preferences set callback) from being used as
           part of a tap filter.  Instead, we just add the argument
           to a list of tap arguments. */
        if (!process_tap_cmd_arg(optarg)) {
	  fprintf(stderr,"ethereal: invalid -z argument.\n");
	  fprintf(stderr,"  -z argument must be one of :\n");
	  list_tap_cmd_args();
	  exit(1);
	}
        break;
      default:
      case '?':        /* Bad flag - print usage message */
        arg_error = TRUE;
        break;
    }
  }
  argc -= optind;
  argv += optind;
  if (argc >= 1) {
    if (cf_name != NULL) {
      /*
       * Input file name specified with "-r" *and* specified as a regular
       * command-line argument.
       */
      arg_error = TRUE;
    } else {
      /*
       * Input file name not specified with "-r", and a command-line argument
       * was specified; treat it as the input file name.
       *
       * Yes, this is different from tethereal, where non-flag command-line
       * arguments are a filter, but this works better on GUI desktops
       * where a command can be specified to be run to open a particular
       * file - yes, you could have "-r" as the last part of the command,
       * but that's a bit ugly.
       */
      cf_name = g_strdup(argv[0]);
    }
    argc--;
    argv++;
  }



  if (argc != 0) {
    /*
     * Extra command line arguments were specified; complain.
     */
    fprintf(stderr, "Invalid argument: %s\n", argv[0]);
    arg_error = TRUE;
  }

  if (arg_error) {
#ifndef HAVE_LIBPCAP
    if (capture_option_specified) {
      fprintf(stderr, "This version of Ethereal was not built with support for capturing packets.\n");
    }
#endif
    print_usage(FALSE);
    exit(1);
  }

#ifdef HAVE_LIBPCAP
  if (start_capture && list_link_layer_types) {
    /* Specifying *both* is bogus. */
    fprintf(stderr, "ethereal: You can't specify both -L and a live capture.\n");
    exit(1);
  }

  if (list_link_layer_types) {
    /* We're supposed to list the link-layer types for an interface;
       did the user also specify a capture file to be read? */
    if (cf_name) {
      /* Yes - that's bogus. */
      fprintf(stderr, "ethereal: You can't specify -L and a capture file to be read.\n");
      exit(1);
    }
    /* No - did they specify a ring buffer option? */
    if (capture_opts->multi_files_on) {
      fprintf(stderr, "ethereal: Ring buffer requested, but a capture isn't being done.\n");
      exit(1);
    }
  } else {
    /* We're supposed to do a live capture; did the user also specify
       a capture file to be read? */
    if (start_capture && cf_name) {
      /* Yes - that's bogus. */
      fprintf(stderr, "ethereal: You can't specify both a live capture and a capture file to be read.\n");
      exit(1);
    }

    /* No - was the ring buffer option specified and, if so, does it make
       sense? */
    if (capture_opts->multi_files_on) {
      /* Ring buffer works only under certain conditions:
	 a) ring buffer does not work with temporary files;
	 b) real_time_mode and multi_files_on are mutually exclusive -
	    real_time_mode takes precedence;
	 c) it makes no sense to enable the ring buffer if the maximum
	    file size is set to "infinite". */
      if (capture_opts->save_file == NULL) {
	fprintf(stderr, "ethereal: Ring buffer requested, but capture isn't being saved to a permanent file.\n");
	capture_opts->multi_files_on = FALSE;
      }
/*      if (capture_opts->real_time_mode) {
	fprintf(stderr, "ethereal: Ring buffer requested, but an \"Update list of packets in real time\" capture is being done.\n");
	capture_opts->multi_files_on = FALSE;
      }*/
      if (!capture_opts->has_autostop_filesize && !capture_opts->has_file_duration) {
	fprintf(stderr, "ethereal: Ring buffer requested, but no maximum capture file size or duration were specified.\n");
/* XXX - this must be redesigned as the conditions changed */
/*	capture_opts->multi_files_on = FALSE;*/
      }
    }
  }

  if (start_capture || list_link_layer_types) {
    /* Did the user specify an interface to use? */
    if (capture_opts->iface == NULL) {
      /* No - is a default specified in the preferences file? */
      if (prefs->capture_device != NULL) {
          /* Yes - use it. */
          capture_opts->iface = g_strdup(prefs->capture_device);
      } else {
        /* No - pick the first one from the list of interfaces. */
        if_list = get_interface_list(&err, err_str);
        if (if_list == NULL) {
          switch (err) {

          case CANT_GET_INTERFACE_LIST:
              cant_get_if_list_errstr = cant_get_if_list_error_message(err_str);
              fprintf(stderr, "%s\n", cant_get_if_list_errstr);
              g_free(cant_get_if_list_errstr);
              break;

          case NO_INTERFACES_FOUND:
              fprintf(stderr, "ethereal: There are no interfaces on which a capture can be done\n");
              break;
          }
          exit(2);
        }
        if_info = if_list->data;	/* first interface */
        capture_opts->iface = g_strdup(if_info->name);
        free_interface_list(if_list);
      }
    }
  }

  if (list_link_layer_types) {
    /* Get the list of link-layer types for the capture device. */
    lt_list = get_pcap_linktype_list(capture_opts->iface, err_str);
    if (lt_list == NULL) {
      if (err_str[0] != '\0') {
	fprintf(stderr, "ethereal: The list of data link types for the capture device could not be obtained (%s).\n"
	  "Please check to make sure you have sufficient permissions, and that\n"
	  "you have the proper interface or pipe specified.\n", err_str);
      } else
	fprintf(stderr, "ethereal: The capture device has no data link types.\n");
      exit(2);
    }
    fprintf(stderr, "Data link types (use option -y to set):\n");
    for (lt_entry = lt_list; lt_entry != NULL;
         lt_entry = g_list_next(lt_entry)) {
      data_link_info = lt_entry->data;
      fprintf(stderr, "  %s", data_link_info->name);
      if (data_link_info->description != NULL)
	fprintf(stderr, " (%s)", data_link_info->description);
      else
	fprintf(stderr, " (not supported)");
      putchar('\n');
    }
    free_pcap_linktype_list(lt_list);
    exit(0);
  }

  if (capture_opts->has_snaplen) {
    if (capture_opts->snaplen < 1)
      capture_opts->snaplen = WTAP_MAX_PACKET_SIZE;
    else if (capture_opts->snaplen < MIN_PACKET_SIZE)
      capture_opts->snaplen = MIN_PACKET_SIZE;
  }

  /* Check the value range of the ringbuffer_num_files parameter */
  if (capture_opts->ring_num_files > RINGBUFFER_MAX_NUM_FILES)
    capture_opts->ring_num_files = RINGBUFFER_MAX_NUM_FILES;
#if RINGBUFFER_MIN_NUM_FILES > 0
  else if (capture_opts->num_files < RINGBUFFER_MIN_NUM_FILES)
    capture_opts->ring_num_files = RINGBUFFER_MIN_NUM_FILES;
#endif
#endif /* HAVE_LIBPCAP */

  /* Notify all registered modules that have had any of their preferences
     changed either from one of the preferences file or from the command
     line that their preferences have changed. */
  prefs_apply_all();

  /* disabled protocols as per configuration file */
  if (gdp_path == NULL && dp_path == NULL) {
    set_disabled_protos_list();
  }

  /* Build the column format array */
  col_setup(&cfile.cinfo, prefs->num_cols);
  for (i = 0; i < cfile.cinfo.num_cols; i++) {
    cfile.cinfo.col_fmt[i] = get_column_format(i);
    cfile.cinfo.col_title[i] = g_strdup(get_column_title(i));
    cfile.cinfo.fmt_matx[i] = (gboolean *) g_malloc0(sizeof(gboolean) *
      NUM_COL_FMTS);
    get_column_format_matches(cfile.cinfo.fmt_matx[i], cfile.cinfo.col_fmt[i]);
    cfile.cinfo.col_data[i] = NULL;
    if (cfile.cinfo.col_fmt[i] == COL_INFO)
      cfile.cinfo.col_buf[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_INFO_LEN);
    else
      cfile.cinfo.col_buf[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
    cfile.cinfo.col_fence[i] = 0;
    cfile.cinfo.col_expr[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
    cfile.cinfo.col_expr_val[i] = (gchar *) g_malloc(sizeof(gchar) * COL_MAX_LEN);
  }

  for (i = 0; i < cfile.cinfo.num_cols; i++) {
      int j;

      for (j = 0; j < NUM_COL_FMTS; j++) {
         if (!cfile.cinfo.fmt_matx[i][j])
             continue;
         
         if (cfile.cinfo.col_first[j] == -1)
             cfile.cinfo.col_first[j] = i;
         cfile.cinfo.col_last[j] = i;
      }
  }

  /* read in rc file from global and personal configuration paths. */
  /* XXX - is this a good idea? */
  gtk_rc_parse(RC_FILE);
  rc_file = get_persconffile_path(RC_FILE, FALSE);
  gtk_rc_parse(rc_file);

#ifdef HAVE_LIBPCAP
  font_init(capture_child);
#else
  font_init(FALSE);
#endif

  /* close the splash screen, as we are going to open the main window now */
  splash_destroy(splash_win);


#ifdef HAVE_LIBPCAP
  /* Is this a "child" ethereal, which is only supposed to pop up a
     capture box to let us stop the capture, and run a capture
     to a file that our parent will read? */
  if (capture_child) {
    /* This is the child process of a capture session,
       so just do the low-level work of a capture - don't create
       a temporary file and fork off *another* child process (so don't
       call "capture_start()"). */

    /* Pop up any queued-up alert boxes. */
    display_queued_messages();

    /* Now start the capture. 
       After the capture is done; there's nothing more for us to do. */

    /* XXX - hand these stats to the parent process */
    if(capture_loop_start(capture_opts, &stats_known, &stats) == TRUE) {
        /* capture ok */
        gtk_exit(0);
    } else {
        /* capture failed */
        gtk_exit(1);
    }
  }
#endif

  /***********************************************************************/
  /* Everything is prepared now, preferences and command line was read in,
       we are NOT a child window for a synced capture. */

  /* Pop up the main window, and read in a capture file if
     we were told to. */
  create_main_window(pl_size, tv_size, bv_size, prefs);

  /* Read the recent file, as we have the gui now ready for it. */
  read_recent(&rf_path, &rf_open_errno);
  color_filters_enable(recent.packet_list_colorize);

  /* rearrange all the widgets as we now have the recent settings for this */
  main_widgets_rearrange();

  /* Fill in column titles.  This must be done after the top level window
     is displayed.

     XXX - is that still true, with fixed-width columns? */
  packet_list_set_column_titles();

  menu_recent_read_finished();

  switch (user_font_apply()) {
  case FA_SUCCESS:
      break;
  case FA_FONT_NOT_RESIZEABLE:
      /* "user_font_apply()" popped up an alert box. */
      /* turn off zooming - font can't be resized */
  case FA_FONT_NOT_AVAILABLE:
      /* XXX - did we successfully load the un-zoomed version earlier?
      If so, this *probably* means the font is available, but not at
      this particular zoom level, but perhaps some other failure
      occurred; I'm not sure you can determine which is the case,
      however. */
      /* turn off zooming - zoom level is unavailable */
  default:
      /* in any other case than FA_SUCCESS, turn off zooming */
      recent.gui_zoom_level = 0;	
      /* XXX: would it be a good idea to disable zooming (insensitive GUI)? */
  }

  dnd_init(top_level);

  colors_init();
  color_filters_init();
  decode_as_init();

  /* the window can be sized only, if it's not already shown, so do it now! */
  main_load_window_geometry(top_level);

  /* If we were given the name of a capture file, read it in now;
     we defer it until now, so that, if we can't open it, and pop
     up an alert box, the alert box is more likely to come up on
     top of the main window - but before the preference-file-error
     alert box, so, if we get one of those, it's more likely to come
     up on top of us. */
  if (cf_name) {
    show_main_window(TRUE);
    if (rfilter != NULL) {
      if (!dfilter_compile(rfilter, &rfcode)) {
        bad_dfilter_alert_box(rfilter);
        rfilter_parse_failed = TRUE;
      }
    }
    if (!rfilter_parse_failed) {
      if (cf_open(&cfile, cf_name, FALSE, &err) == CF_OK) {
        /* "cf_open()" succeeded, so it closed the previous
           capture file, and thus destroyed any previous read filter
           attached to "cf". */

        cfile.rfcode = rfcode;
        /* Open tap windows; we do so after creating the main window,
           to avoid GTK warnings, and after successfully opening the
           capture file, so we know we have something to tap, and
           after registering all dissectors, so that MATE will have
           registered its field array and we can have a filter with
           one of MATE's late-registered fields as part of the tap's
           filter. */
        start_requested_taps();

        /* Read the capture file. */
        switch (cf_read(&cfile)) {

        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:
          /* Exit now. */
          gtk_exit(0);
          break;
        }
        /* 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);
        /* we might already set this from the recent file, don't overwrite this */
        if(get_last_open_dir() == NULL) 
          set_last_open_dir(s);
        g_free(cf_name);
        cf_name = NULL;
      } else {
        if (rfcode != NULL)
          dfilter_free(rfcode);
        cfile.rfcode = NULL;
	set_menus_for_capture_in_progress(FALSE);
      }
    }
  } else {
#ifdef HAVE_LIBPCAP
    if (start_capture) {
      if (capture_opts->save_file != NULL) {
        /* Save the directory name for future file dialogs. */
        /* (get_dirname overwrites filename) */
        s = get_dirname(g_strdup(capture_opts->save_file));  
        set_last_open_dir(s);
        g_free(s);
      }
      /* "-k" was specified; start a capture. */
      show_main_window(TRUE);
      if (capture_start(capture_opts)) {
        /* The capture started.  Open tap windows; we do so after creating
	   the main window, to avoid GTK warnings, and after successfully
	   opening the capture file, so we know we have something to tap,
	   and after registering all dissectors, so that MATE will have
           registered its field array and we can have a filter with
           one of MATE's late-registered fields as part of the tap's
           filter. */
        start_requested_taps();
      }
    }
    else {
      show_main_window(FALSE);
      set_menus_for_capture_in_progress(FALSE);
    }

    /* if the user didn't supplied a capture filter, use the one to filter out remote connections like SSH */
    if (!start_capture && (capture_opts->cfilter == NULL || strlen(capture_opts->cfilter) == 0)) {
      if (capture_opts->cfilter) {
        g_free(capture_opts->cfilter);
      }
      capture_opts->cfilter = g_strdup(get_conn_cfilter());
    }
#else /* HAVE_LIBPCAP */
    show_main_window(FALSE);
    set_menus_for_capture_in_progress(FALSE);
#endif /* HAVE_LIBPCAP */
  }

  gtk_main();

  epan_cleanup();
  g_free(rc_file);

#ifdef _WIN32
  /* Shutdown windows sockets */
  WSACleanup();

  /* For some unknown reason, the "atexit()" call in "create_console()"
     doesn't arrange that "destroy_console()" be called when we exit,
     so we call it here if a console was created. */
  destroy_console();
#endif

  gtk_exit(0);

  /* This isn't reached, but we need it to keep GCC from complaining
     that "main()" returns without returning a value - it knows that
     "exit()" never returns, but it doesn't know that "gtk_exit()"
     doesn't, as GTK+ doesn't declare it with the attribute
     "noreturn". */
  return 0;	/* not reached */
}

#ifdef _WIN32

/* We build this as a GUI subsystem application on Win32, so
   "WinMain()", not "main()", gets called.

   Hack shamelessly stolen from the Win32 port of the GIMP. */
#ifdef __GNUC__
#define _stdcall  __attribute__((stdcall))
#endif

int _stdcall
WinMain (struct HINSTANCE__ *hInstance,
	 struct HINSTANCE__ *hPrevInstance,
	 char               *lpszCmdLine,
	 int                 nCmdShow)
{
  has_console = FALSE;
  return main (__argc, __argv);
}

/*
 * If this application has no console window to which its standard output
 * would go, create one.
 */
void
create_console(void)
{
  if (!has_console && prefs.gui_console_open != console_open_never) {
    /* We have no console to which to print the version string, so
       create one and make it the standard input, output, and error. */
    if (!AllocConsole())
      return;   /* couldn't create console */
    freopen("CONIN$", "r", stdin);
    freopen("CONOUT$", "w", stdout);
    freopen("CONOUT$", "w", stderr);

    /* Well, we have a console now. */
    has_console = TRUE;

    /* Now register "destroy_console()" as a routine to be called just
       before the application exits, so that we can destroy the console
       after the user has typed a key (so that the console doesn't just
       disappear out from under them, giving the user no chance to see
       the message(s) we put in there). */
    atexit(destroy_console);
  }
}

static void
destroy_console(void)
{
  if (has_console) {
    printf("\n\nPress any key to exit\n");
    _getch();
    FreeConsole();
  }
}

/* This routine should not be necessary, at least as I read the GLib
   source code, as it looks as if GLib is, on Win32, *supposed* to
   create a console window into which to display its output.

   That doesn't happen, however.  I suspect there's something completely
   broken about that code in GLib-for-Win32, and that it may be related
   to the breakage that forces us to just call "printf()" on the message
   rather than passing the message on to "g_log_default_handler()"
   (which is the routine that does the aforementioned non-functional
   console window creation). */
static void
console_log_handler(const char *log_domain, GLogLevelFlags log_level,
		    const char *message, gpointer user_data)
{
  create_console();
  if (has_console) {
    /* For some unknown reason, the above doesn't appear to actually cause
       anything to be sent to the standard output, so we'll just splat the
       message out directly, just to make sure it gets out. */
    printf("%s\n", message);
  } else
    g_log_default_handler(log_domain, log_level, message, user_data);
}
#endif


GtkWidget *info_bar_new(void)
{
    /* tip: tooltips don't work on statusbars! */
    info_bar = gtk_statusbar_new();
    main_ctx = gtk_statusbar_get_context_id(GTK_STATUSBAR(info_bar), "main");
    file_ctx = gtk_statusbar_get_context_id(GTK_STATUSBAR(info_bar), "file");
    help_ctx = gtk_statusbar_get_context_id(GTK_STATUSBAR(info_bar), "help");
#if GTK_MAJOR_VERSION >= 2
    gtk_statusbar_set_has_resize_grip(GTK_STATUSBAR(info_bar), FALSE);
#endif
    gtk_statusbar_push(GTK_STATUSBAR(info_bar), main_ctx, DEF_READY_MESSAGE);

    return info_bar;
}

GtkWidget *packets_bar_new(void)
{
    /* tip: tooltips don't work on statusbars! */
    packets_bar = gtk_statusbar_new();
    packets_ctx = gtk_statusbar_get_context_id(GTK_STATUSBAR(packets_bar), "packets");
    packets_bar_update();

    return packets_bar;
}


/*
 * Helper for main_widgets_rearrange()
 */
void foreach_remove_a_child(GtkWidget *widget, gpointer data) {
    gtk_container_remove(GTK_CONTAINER(data), widget);
}

GtkWidget *main_widget_layout(gint layout_content)
{
    switch(layout_content) {
    case(layout_pane_content_none):
        return NULL;
        break;
    case(layout_pane_content_plist):
        return pkt_scrollw;
        break;
    case(layout_pane_content_pdetails):
        return tv_scrollw;
        break;
    case(layout_pane_content_pbytes):
        return byte_nb_ptr;
        break;
    default:
        g_assert_not_reached();
        return NULL;
    }
}


/*
 * Rearrange the main window widgets
 */
void main_widgets_rearrange(void) {
    GtkWidget *first_pane_widget1, *first_pane_widget2;
    GtkWidget *second_pane_widget1, *second_pane_widget2;
    gboolean split_top_left;

    /* be a bit faster */
    gtk_widget_hide(main_vbox);

    /* be sure, we don't loose a widget while rearranging */
    gtk_widget_ref(menubar);
    gtk_widget_ref(main_tb);
    gtk_widget_ref(filter_tb);
    gtk_widget_ref(pkt_scrollw);
    gtk_widget_ref(tv_scrollw);
    gtk_widget_ref(byte_nb_ptr);
    gtk_widget_ref(stat_hbox);
    gtk_widget_ref(info_bar);
    gtk_widget_ref(packets_bar);
    gtk_widget_ref(status_pane);
    gtk_widget_ref(main_pane_v1);
    gtk_widget_ref(main_pane_v2);
    gtk_widget_ref(main_pane_h1);
    gtk_widget_ref(main_pane_h2);
    gtk_widget_ref(welcome_pane);

    /* empty all containers participating */
    gtk_container_foreach(GTK_CONTAINER(main_vbox),     foreach_remove_a_child, main_vbox);
    gtk_container_foreach(GTK_CONTAINER(stat_hbox),     foreach_remove_a_child, stat_hbox);
    gtk_container_foreach(GTK_CONTAINER(status_pane),   foreach_remove_a_child, status_pane);
    gtk_container_foreach(GTK_CONTAINER(main_pane_v1),  foreach_remove_a_child, main_pane_v1);
    gtk_container_foreach(GTK_CONTAINER(main_pane_v2),  foreach_remove_a_child, main_pane_v2);
    gtk_container_foreach(GTK_CONTAINER(main_pane_h1),  foreach_remove_a_child, main_pane_h1);
    gtk_container_foreach(GTK_CONTAINER(main_pane_h2),  foreach_remove_a_child, main_pane_h2);

    /* add the menubar always at the top */
    gtk_box_pack_start(GTK_BOX(main_vbox), menubar, FALSE, TRUE, 0);

    /* main toolbar */
    gtk_box_pack_start(GTK_BOX(main_vbox), main_tb, FALSE, TRUE, 0);

    /* filter toolbar in toolbar area */
    if (!prefs.filter_toolbar_show_in_statusbar) {
        gtk_box_pack_start(GTK_BOX(main_vbox), filter_tb, FALSE, TRUE, 1);
    }

    /* fill the main layout panes */
    switch(prefs.gui_layout_type) {
    case(layout_type_5):
        main_first_pane  = main_pane_v1;
        main_second_pane = main_pane_v2;
        split_top_left = FALSE;
        break;
    case(layout_type_2):
        main_first_pane  = main_pane_v1;
        main_second_pane = main_pane_h1;
        split_top_left = FALSE;
        break;
    case(layout_type_1):
        main_first_pane  = main_pane_v1;
        main_second_pane = main_pane_h1;
        split_top_left = TRUE;
        break;
    case(layout_type_4):
        main_first_pane  = main_pane_h1;
        main_second_pane = main_pane_v1;
        split_top_left = FALSE;
        break;
    case(layout_type_3):
        main_first_pane  = main_pane_h1;
        main_second_pane = main_pane_v1;
        split_top_left = TRUE;
        break;
    case(layout_type_6):
        main_first_pane  = main_pane_h1;
        main_second_pane = main_pane_h2;
        split_top_left = FALSE;
        break;
    default:
        main_first_pane = NULL;
        main_second_pane = NULL;
        split_top_left = FALSE;
        g_assert_not_reached();
    }
    if (split_top_left) {
        first_pane_widget1 = main_second_pane;
        second_pane_widget1 = main_widget_layout(prefs.gui_layout_content_1);
        second_pane_widget2 = main_widget_layout(prefs.gui_layout_content_2);
        first_pane_widget2 = main_widget_layout(prefs.gui_layout_content_3);
    } else {
        first_pane_widget1 = main_widget_layout(prefs.gui_layout_content_1);
        first_pane_widget2 = main_second_pane;
        second_pane_widget1 = main_widget_layout(prefs.gui_layout_content_2);
        second_pane_widget2 = main_widget_layout(prefs.gui_layout_content_3);
    }
    if (first_pane_widget1 != NULL)
        gtk_paned_add1(GTK_PANED(main_first_pane), first_pane_widget1);
    if (first_pane_widget2 != NULL)
        gtk_paned_add2(GTK_PANED(main_first_pane), first_pane_widget2);
    if (second_pane_widget1 != NULL)
        gtk_paned_pack1(GTK_PANED(main_second_pane), second_pane_widget1, TRUE, TRUE);
    if (second_pane_widget2 != NULL)
        gtk_paned_pack2(GTK_PANED(main_second_pane), second_pane_widget2, FALSE, FALSE);

    gtk_container_add(GTK_CONTAINER(main_vbox), main_first_pane);

    /* welcome pane */
    gtk_box_pack_start(GTK_BOX(main_vbox), welcome_pane, TRUE, TRUE, 0);

    /* statusbar hbox */
    gtk_box_pack_start(GTK_BOX(main_vbox), stat_hbox, FALSE, TRUE, 0);

    /* filter toolbar in statusbar hbox */
    if (prefs.filter_toolbar_show_in_statusbar) {
        gtk_box_pack_start(GTK_BOX(stat_hbox), filter_tb, FALSE, TRUE, 1);
    }

    /* statusbar */
    gtk_box_pack_start(GTK_BOX(stat_hbox), status_pane, TRUE, TRUE, 0);
    gtk_paned_pack1(GTK_PANED(status_pane), info_bar, FALSE, FALSE);
    gtk_paned_pack2(GTK_PANED(status_pane), packets_bar, FALSE, FALSE);

    /* hide widgets on users recent settings */
    main_widgets_show_or_hide();

    gtk_widget_show(main_vbox);
}

static void
is_widget_visible(GtkWidget *widget, gpointer data)
{
    gboolean *is_visible = data;

    if (!*is_visible) {
        if (GTK_WIDGET_VISIBLE(widget))
            *is_visible = TRUE;
    }
}


#if 0
/* XXX - There seems to be some disagreement about if and how this feature should be implemented.
   As I currently don't have the time to continue this, it's temporarily disabled. - ULFL */
GtkWidget *
welcome_item(gchar *stock_item, gchar * label, gchar * message, GtkSignalFunc callback, void *callback_data)
{
    GtkWidget *w, *item_hb;
#if GTK_MAJOR_VERSION >= 2
    gchar *formatted_message;
#endif


    item_hb = gtk_hbox_new(FALSE, 1);

    w = BUTTON_NEW_FROM_STOCK(stock_item);
    WIDGET_SET_SIZE(w, 60, 60);
#if GTK_MAJOR_VERSION >= 2
    gtk_button_set_label(GTK_BUTTON(w), label);
#endif
    gtk_box_pack_start(GTK_BOX(item_hb), w, FALSE, FALSE, 0);
    SIGNAL_CONNECT(w, "clicked", callback, callback_data);

    w = gtk_label_new(message);
	gtk_misc_set_alignment (GTK_MISC(w), 0.0, 0.5);
#if GTK_MAJOR_VERSION >= 2
    formatted_message = g_strdup_printf("<span weight=\"bold\" size=\"x-large\">%s</span>", message);
    gtk_label_set_markup(GTK_LABEL(w), formatted_message);
    g_free(formatted_message);
#endif

    gtk_box_pack_start(GTK_BOX(item_hb), w, FALSE, FALSE, 10);

    return item_hb;
}


/* XXX - the layout has to be improved */
GtkWidget *
welcome_new(void)
{
    GtkWidget *welcome_scrollw, *welcome_hb, *welcome_vb, *item_hb;
    GtkWidget *w, *icon;
    gchar * message;


    welcome_scrollw = scrolled_window_new(NULL, NULL);

    welcome_hb = gtk_hbox_new(FALSE, 1);
	/*gtk_container_border_width(GTK_CONTAINER(welcome_hb), 20);*/

    welcome_vb = gtk_vbox_new(FALSE, 1);

    item_hb = gtk_hbox_new(FALSE, 1);

    icon = xpm_to_widget_from_parent(top_level, eicon3d64_xpm);
    gtk_box_pack_start(GTK_BOX(item_hb), icon, FALSE, FALSE, 5);

#if GTK_MAJOR_VERSION < 2
    message = "Welcome to Ethereal!";
#else
    message = "<span weight=\"bold\" size=\"25000\">" "Welcome to Ethereal!" "</span>";
#endif
    w = gtk_label_new(message);
#if GTK_MAJOR_VERSION >= 2
    gtk_label_set_markup(GTK_LABEL(w), message);
#endif
    gtk_misc_set_alignment (GTK_MISC(w), 0.0, 0.5);
    gtk_box_pack_start(GTK_BOX(item_hb), w, TRUE, TRUE, 5);

    gtk_box_pack_start(GTK_BOX(welcome_vb), item_hb, TRUE, FALSE, 5);

    w = gtk_label_new("What would you like to do?");
    gtk_box_pack_start(GTK_BOX(welcome_vb), w, FALSE, FALSE, 10);
    gtk_misc_set_alignment (GTK_MISC(w), 0.0, 0.0);

#ifdef HAVE_LIBPCAP
    item_hb = welcome_item(ETHEREAL_STOCK_CAPTURE_START, 
        "Capture",
        "Capture live data from your network", 
        GTK_SIGNAL_FUNC(capture_prep_cb), NULL);
    gtk_box_pack_start(GTK_BOX(welcome_vb), item_hb, TRUE, FALSE, 5);
#endif

    item_hb = welcome_item(GTK_STOCK_OPEN, 
        "Open",
        "Open a previously captured file",
        GTK_SIGNAL_FUNC(file_open_cmd_cb), NULL);
    gtk_box_pack_start(GTK_BOX(welcome_vb), item_hb, TRUE, FALSE, 5);

#if (GLIB_MAJOR_VERSION >= 2)
    item_hb = welcome_item(GTK_STOCK_HOME, 
        "Home",
        "Visit the Ethereal homepage",
        GTK_SIGNAL_FUNC(topic_cb), GINT_TO_POINTER(ONLINEPAGE_HOME));
    gtk_box_pack_start(GTK_BOX(welcome_vb), item_hb, TRUE, FALSE, 5);
#endif

    /* the end */
    w = gtk_label_new("");
    gtk_box_pack_start(GTK_BOX(welcome_vb), w, TRUE, TRUE, 0);

    w = gtk_label_new("");
    gtk_box_pack_start(GTK_BOX(welcome_hb), w, TRUE, TRUE, 0);

    gtk_box_pack_start(GTK_BOX(welcome_hb), welcome_vb, TRUE, TRUE, 0);

    w = gtk_label_new("");
    gtk_box_pack_start(GTK_BOX(welcome_hb), w, TRUE, TRUE, 0);

    gtk_widget_show_all(welcome_hb);

    gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(welcome_scrollw),
                                          welcome_hb);
    gtk_widget_show_all(welcome_scrollw);

    return welcome_scrollw;
}
#endif /* 0 */

GtkWidget *
welcome_new(void)
{
    /* this is just a dummy to fill up window space, simply showing nothing */
    return scrolled_window_new(NULL, NULL);
}



/*
 * XXX - this doesn't appear to work with the paned widgets in
 * GTK+ 1.2[.x]; if you hide one of the panes, the splitter remains
 * and the other pane doesn't grow to take up the rest of the pane.
 * It does appear to work with GTK+ 2.x.
 */
void
main_widgets_show_or_hide(void)
{
    gboolean main_second_pane_show;

    if (recent.main_toolbar_show) {
        gtk_widget_show(main_tb);
    } else {
        gtk_widget_hide(main_tb);
    }

    /*
     * Show the status hbox if either:
     *
     *    1) we're showing the filter toolbar and we want it in the status
     *       line
     *
     * or
     *
     *    2) we're showing the status bar.
     */
    if ((recent.filter_toolbar_show && prefs.filter_toolbar_show_in_statusbar) ||
         recent.statusbar_show) {
        gtk_widget_show(stat_hbox);
    } else {
        gtk_widget_hide(stat_hbox);
    }

    if (recent.statusbar_show) {
        gtk_widget_show(status_pane);
    } else {
        gtk_widget_hide(status_pane);
    }

    if (recent.filter_toolbar_show) {
        gtk_widget_show(filter_tb);
    } else {
        gtk_widget_hide(filter_tb);
    }

    if (recent.packet_list_show && have_capture_file) {
        gtk_widget_show(pkt_scrollw);
    } else {
        gtk_widget_hide(pkt_scrollw);
    }

    if (recent.tree_view_show && have_capture_file) {
        gtk_widget_show(tv_scrollw);
    } else {
        gtk_widget_hide(tv_scrollw);
    }

    if (recent.byte_view_show && have_capture_file) {
        gtk_widget_show(byte_nb_ptr);
    } else {
        gtk_widget_hide(byte_nb_ptr);
    }

    if (have_capture_file) {
        gtk_widget_show(main_first_pane);
    } else {
        gtk_widget_hide(main_first_pane);
    }

    /*
     * Is anything in "main_second_pane" visible?
     * If so, show it, otherwise hide it.
     */
    main_second_pane_show = FALSE;
    gtk_container_foreach(GTK_CONTAINER(main_second_pane), is_widget_visible,
                          &main_second_pane_show);
    if (main_second_pane_show) {
        gtk_widget_show(main_second_pane);
    } else {
        gtk_widget_hide(main_second_pane);
    }

    if (!have_capture_file) {
        if(welcome_pane) {
            gtk_widget_show(welcome_pane);
        }
    } else {
        gtk_widget_hide(welcome_pane);
    }
}


#if GTK_MAJOR_VERSION >= 2
/* called, when the window state changes (minimized, maximized, ...) */
static int
window_state_event_cb (GtkWidget *widget _U_,
                       GdkEvent *event,
                       gpointer  data _U_)
{
    GdkWindowState new_window_state = ((GdkEventWindowState*)event)->new_window_state;

    if( (event->type) == (GDK_WINDOW_STATE)) {
        if(!(new_window_state & GDK_WINDOW_STATE_ICONIFIED)) {
            /* we might have dialogs popped up while we where iconified,
               show em now */
            display_queued_messages();
        }
    }
    return FALSE;
}
#endif


static void
create_main_window (gint pl_size, gint tv_size, gint bv_size, e_prefs *prefs)
{
    GtkWidget     
                  *filter_bt, *filter_cm, *filter_te,
                  *filter_add_expr_bt,
                  *filter_apply,
                  *filter_reset;
    GList         *dfilter_list = NULL;
    GtkTooltips   *tooltips;
    GtkAccelGroup *accel;
	gchar         *title;
    /* Display filter construct dialog has an Apply button, and "OK" not
       only sets our text widget, it activates it (i.e., it causes us to
       filter the capture). */
    static construct_args_t args = {
        "Ethereal: Display Filter",
        TRUE,
        TRUE
    };

    /* use user-defined title if preference is set */
    title = create_user_window_title("The Ethereal Network Analyzer");

    /* Main window */
    top_level = window_new(GTK_WINDOW_TOPLEVEL, title);
    g_free(title);

    tooltips = gtk_tooltips_new();

#ifdef _WIN32 
#if GTK_MAJOR_VERSION < 2
    /* has to be done, after top_level window is created */
    app_font_gtk1_init(top_level);
#endif
#endif
    
    gtk_widget_set_name(top_level, "main window");
    SIGNAL_CONNECT(top_level, "delete_event", main_window_delete_event_cb,
                   NULL);
#if GTK_MAJOR_VERSION >= 2
    SIGNAL_CONNECT(GTK_OBJECT(top_level), "window_state_event",
                         G_CALLBACK (window_state_event_cb), NULL);
#endif

    gtk_window_set_policy(GTK_WINDOW(top_level), TRUE, TRUE, FALSE);

    /* Container for menu bar, toolbar(s), paned windows and progress/info box */
    main_vbox = gtk_vbox_new(FALSE, 1);
    gtk_container_border_width(GTK_CONTAINER(main_vbox), 1);
    gtk_container_add(GTK_CONTAINER(top_level), main_vbox);
    gtk_widget_show(main_vbox);

    /* Menu bar */
    menubar = main_menu_new(&accel);
    gtk_window_add_accel_group(GTK_WINDOW(top_level), accel);
    gtk_widget_show(menubar);

    /* Main Toolbar */
    main_tb = toolbar_new();
    gtk_widget_show (main_tb);

    /* Packet list */
    pkt_scrollw = packet_list_new(prefs);
    WIDGET_SET_SIZE(packet_list, -1, pl_size);
    gtk_widget_show(pkt_scrollw);

    /* Tree view */
    tv_scrollw = main_tree_view_new(prefs, &tree_view);
    WIDGET_SET_SIZE(tv_scrollw, -1, tv_size);
    gtk_widget_show(tv_scrollw);

#if GTK_MAJOR_VERSION < 2
    SIGNAL_CONNECT(tree_view, "tree-select-row", tree_view_select_row_cb, NULL);
    SIGNAL_CONNECT(tree_view, "tree-unselect-row", tree_view_unselect_row_cb,
                   NULL);
#else
    SIGNAL_CONNECT(gtk_tree_view_get_selection(GTK_TREE_VIEW(tree_view)),
                   "changed", tree_view_selection_changed_cb, NULL);
#endif
    SIGNAL_CONNECT(tree_view, "button_press_event", popup_menu_handler,
                   OBJECT_GET_DATA(popup_menu_object, PM_TREE_VIEW_KEY));
    gtk_widget_show(tree_view);

    /* Byte view. */
    byte_nb_ptr = byte_view_new();
    WIDGET_SET_SIZE(byte_nb_ptr, -1, bv_size);
    gtk_widget_show(byte_nb_ptr);

    SIGNAL_CONNECT(byte_nb_ptr, "button_press_event", popup_menu_handler,
                   OBJECT_GET_DATA(popup_menu_object, PM_HEXDUMP_KEY));


    /* Panes for the packet list, tree, and byte view */
    main_pane_v1 = gtk_vpaned_new();
    gtk_widget_show(main_pane_v1);
    main_pane_v2 = gtk_vpaned_new();
    gtk_widget_show(main_pane_v2);
    main_pane_h1 = gtk_hpaned_new();
    gtk_widget_show(main_pane_h1);
    main_pane_h2 = gtk_hpaned_new();
    gtk_widget_show(main_pane_h2);

    /* filter toolbar */
#if GTK_MAJOR_VERSION < 2
    filter_tb = gtk_toolbar_new(GTK_ORIENTATION_HORIZONTAL,
                               GTK_TOOLBAR_BOTH);
#else
    filter_tb = gtk_toolbar_new();
    gtk_toolbar_set_orientation(GTK_TOOLBAR(filter_tb),
                                GTK_ORIENTATION_HORIZONTAL);
#endif /* GTK_MAJOR_VERSION */
    gtk_widget_show(filter_tb);

    /* Create the "Filter:" button */
    filter_bt = BUTTON_NEW_FROM_STOCK(ETHEREAL_STOCK_DISPLAY_FILTER_ENTRY);
    SIGNAL_CONNECT(filter_bt, "clicked", display_filter_construct_cb, &args);
    gtk_widget_show(filter_bt);
    OBJECT_SET_DATA(top_level, E_FILT_BT_PTR_KEY, filter_bt);

    gtk_toolbar_append_widget(GTK_TOOLBAR(filter_tb), filter_bt, 
        "Open the \"Display Filter\" dialog, to edit/apply filters", "Private");

    /* Create the filter combobox */
    filter_cm = gtk_combo_new();
    dfilter_list = NULL;
    gtk_combo_disable_activate(GTK_COMBO(filter_cm));
    gtk_combo_set_case_sensitive(GTK_COMBO(filter_cm), TRUE);
    OBJECT_SET_DATA(filter_cm, E_DFILTER_FL_KEY, dfilter_list);
    filter_te = GTK_COMBO(filter_cm)->entry;
    main_display_filter_widget=filter_te;
    OBJECT_SET_DATA(filter_bt, E_FILT_TE_PTR_KEY, filter_te);
    OBJECT_SET_DATA(filter_te, E_DFILTER_CM_KEY, filter_cm);
    OBJECT_SET_DATA(top_level, E_DFILTER_CM_KEY, filter_cm);
    SIGNAL_CONNECT(filter_te, "activate", filter_activate_cb, filter_te);
    SIGNAL_CONNECT(filter_te, "changed", filter_te_syntax_check_cb, NULL);
    WIDGET_SET_SIZE(filter_cm, 400, -1);
    gtk_widget_show(filter_cm);
    gtk_toolbar_append_widget(GTK_TOOLBAR(filter_tb), filter_cm, 
        NULL, NULL);
    /* setting a tooltip for a combobox will do nothing, so add it to the corresponding text entry */
    gtk_tooltips_set_tip(tooltips, filter_te, 
        "Enter a display filter, or choose one of your recently used filters. "
        "The background color of this field is changed by a continuous syntax check (green is valid, red is invalid).", 
        NULL);

    /* Create the "Add Expression..." button, to pop up a dialog
       for constructing filter comparison expressions. */
    filter_add_expr_bt = BUTTON_NEW_FROM_STOCK(ETHEREAL_STOCK_ADD_EXPRESSION);
    OBJECT_SET_DATA(filter_tb, E_FILT_FILTER_TE_KEY, filter_te);
    SIGNAL_CONNECT(filter_add_expr_bt, "clicked", filter_add_expr_bt_cb, filter_tb);
    gtk_widget_show(filter_add_expr_bt);
    gtk_toolbar_append_widget(GTK_TOOLBAR(filter_tb), filter_add_expr_bt, 
        "Add an expression to this filter string", "Private");

    /* Create the "Clear" button */
    filter_reset = BUTTON_NEW_FROM_STOCK(GTK_STOCK_CLEAR);
    OBJECT_SET_DATA(filter_reset, E_DFILTER_TE_KEY, filter_te);
    SIGNAL_CONNECT(filter_reset, "clicked", filter_reset_cb, NULL);
    gtk_widget_show(filter_reset);
    gtk_toolbar_append_widget(GTK_TOOLBAR(filter_tb), filter_reset, 
        "Clear this filter string and update the display", "Private");

    /* Create the "Apply" button */
    filter_apply = BUTTON_NEW_FROM_STOCK(GTK_STOCK_APPLY);
    OBJECT_SET_DATA(filter_apply, E_DFILTER_CM_KEY, filter_cm);
    SIGNAL_CONNECT(filter_apply, "clicked", filter_activate_cb, filter_te);
    gtk_widget_show(filter_apply);
    gtk_toolbar_append_widget(GTK_TOOLBAR(filter_tb), filter_apply, 
        "Apply this filter string to the display", "Private");

    /* Sets the text entry widget pointer as the E_DILTER_TE_KEY data
     * of any widget that ends up calling a callback which needs
     * that text entry pointer */
    set_menu_object_data("/File/Open...", E_DFILTER_TE_KEY, filter_te);
    set_menu_object_data("/Analyze/Display Filters...", E_FILT_TE_PTR_KEY,
                         filter_te);
    set_menu_object_data("/Analyze/Follow TCP Stream", E_DFILTER_TE_KEY,
                         filter_te);
    set_menu_object_data("/Analyze/Apply as Filter/Selected", E_DFILTER_TE_KEY,
                         filter_te);
    set_menu_object_data("/Analyze/Apply as Filter/Not Selected", E_DFILTER_TE_KEY,
                         filter_te);
    set_menu_object_data("/Analyze/Apply as Filter/... and Selected", E_DFILTER_TE_KEY,
                         filter_te);
    set_menu_object_data("/Analyze/Apply as Filter/... or Selected", E_DFILTER_TE_KEY,
                         filter_te);
    set_menu_object_data("/Analyze/Apply as Filter/... and not Selected", E_DFILTER_TE_KEY,
                         filter_te);
    set_menu_object_data("/Analyze/Apply as Filter/... or not Selected", E_DFILTER_TE_KEY,
                         filter_te);
    set_menu_object_data("/Analyze/Prepare a Filter/Selected", E_DFILTER_TE_KEY,
                         filter_te);
    set_menu_object_data("/Analyze/Prepare a Filter/Not Selected", E_DFILTER_TE_KEY,
                         filter_te);
    set_menu_object_data("/Analyze/Prepare a Filter/... and Selected", E_DFILTER_TE_KEY,
                         filter_te);
    set_menu_object_data("/Analyze/Prepare a Filter/... or Selected", E_DFILTER_TE_KEY,
                         filter_te);
    set_menu_object_data("/Analyze/Prepare a Filter/... and not Selected", E_DFILTER_TE_KEY,
                         filter_te);
    set_menu_object_data("/Analyze/Prepare a Filter/... or not Selected", E_DFILTER_TE_KEY,
                         filter_te);
    set_toolbar_object_data(E_DFILTER_TE_KEY, filter_te);
    OBJECT_SET_DATA(popup_menu_object, E_DFILTER_TE_KEY, filter_te);
    OBJECT_SET_DATA(popup_menu_object, E_MPACKET_LIST_KEY, packet_list);

    /* info (main) statusbar */
    info_bar = info_bar_new();
    gtk_widget_show(info_bar);

    /* packets statusbar */
    packets_bar = packets_bar_new();
    gtk_widget_show(packets_bar);

    /* Filter/status hbox */
    stat_hbox = gtk_hbox_new(FALSE, 1);
    gtk_container_border_width(GTK_CONTAINER(stat_hbox), 0);
    gtk_widget_show(stat_hbox);

    /* Pane for the statusbar */
    status_pane = gtk_hpaned_new();
    gtk_widget_show(status_pane);

    /* Pane for the welcome screen */
    welcome_pane = welcome_new();
    gtk_widget_show(welcome_pane);
}

static void
show_main_window(gboolean doing_work)
{
  main_set_for_capture_file(doing_work);

  /*** we have finished all init things, show the main window ***/
  gtk_widget_show(top_level);

  /* the window can be maximized only, if it's visible, so do it after show! */
  main_load_window_geometry(top_level);

  /* process all pending GUI events before continue */
  while (gtk_events_pending()) gtk_main_iteration();

  /* Pop up any queued-up alert boxes. */
  display_queued_messages();
}
