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/* prefs_capture.c
 * Dialog box for capture preferences
 *
 * Wireshark - Network traffic analyzer
 * By Gerald Combs <gerald@wireshark.org>
 * Copyright 1998 Gerald Combs
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include "config.h"

#ifdef HAVE_LIBPCAP

#include <string.h>
#include <gtk/gtk.h>

#include <epan/prefs.h>

#include "capture_opts.h"
#include "caputils/capture_ifinfo.h"
#include "ui/capture_ui_utils.h"
#include "ui/capture_globals.h"
#include "ui/iface_lists.h"
#include "ui/simple_dialog.h"
#include "ui/ui_util.h"

#include "ui/gtk/prefs_capture.h"
#include "ui/gtk/prefs_dlg.h"
#include "ui/gtk/gui_utils.h"
#include "ui/gtk/dlg_utils.h"
#include "ui/gtk/main_welcome.h"
#include "ui/gtk/help_dlg.h"
#include "ui/gtk/stock_icons.h"
#include "ui/gtk/old-gtk-compat.h"
#include <epan/strutil.h>

#include <wiretap/wtap.h>

#define DEVICE_KEY              "device"
#define PROM_MODE_KEY           "prom_mode"
#define PCAP_NG_KEY             "pcap_ng"
#define CAPTURE_REAL_TIME_KEY   "capture_real_time"
#define AUTO_SCROLL_KEY         "auto_scroll"
#define SHOW_INFO_KEY           "show_info"

#define IFOPTS_CALLER_PTR_KEY   "ifopts_caller_ptr"
#define IFOPTS_DIALOG_PTR_KEY   "ifopts_dialog_ptr"
#define IFOPTS_LIST_TEXT_COLS   4
#define IFOPTS_MAX_DESCR_LEN  128
#define IFOPTS_IF_NOSEL        -1
#define COLOPTS_CALLER_PTR_KEY  "colopts_caller_ptr"
#define COLOPTS_DIALOG_PTR_KEY  "colopts_dialog_ptr"

static GtkWidget        *capture_window;

/* interface options dialog */
static GtkWidget *cur_list, *if_dev_lb, *if_name_lb, *if_linktype_lb, *if_linktype_cb, *if_descr_te, *if_hide_cb, *if_default_if_lb;
#ifdef HAVE_PCAP_CREATE
static GtkWidget *if_monitor_lb, *if_monitor_cb;
#endif
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
static GtkWidget *if_buffersize_lb, *if_buffersize_cb;
#endif
static GtkWidget *if_snaplen_lb, *if_snaplen_cb, *if_snaplen_tg, *if_pmode_lb, *if_pmode_cb;
static GtkTreeSelection *if_selection;  /* current interface row selected */
static int num_linktypes;
static gboolean interfaces_info_nochange;  /* TRUE to ignore Interface Options Properties */
                                           /*  widgets "changed" callbacks.               */

static void ifopts_edit_cb(GtkWidget *w, gpointer data);
static void ifopts_edit_ok_cb(GtkWidget *w, gpointer parent_w);
static void ifopts_edit_destroy_cb(GtkWidget *win, gpointer data);
static void ifopts_edit_ifsel_cb(GtkTreeSelection *selection, gpointer data);
#ifdef HAVE_PCAP_CREATE
static void ifopts_edit_monitor_changed_cb(GtkToggleButton *tbt, gpointer udata);
#endif
static void ifopts_edit_linktype_changed_cb(GtkComboBox *ed, gpointer udata);
static void ifopts_edit_descr_changed_cb(GtkEditable *ed, gpointer udata);
static void ifopts_edit_hide_changed_cb(GtkToggleButton *tbt, gpointer udata);
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
static void ifopts_edit_buffersize_changed_cb(GtkSpinButton *ed, gpointer udata);
#endif
static void ifopts_edit_snaplen_changed_cb(GtkSpinButton *ed, gpointer udata);
static void ifopts_edit_hassnap_changed_cb(GtkToggleButton *tbt, gpointer udata);
static void ifopts_edit_pmode_changed_cb(GtkToggleButton *tbt, gpointer udata);
static void ifopts_options_add(GtkListStore *list_store, if_info_t *if_info);
static void ifopts_options_free(gchar *text[]);
static void ifopts_if_liststore_add(void);
#ifdef HAVE_PCAP_CREATE
static void ifopts_write_new_monitor_mode(void);
#endif
static void ifopts_write_new_linklayer(void);
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
static void ifopts_write_new_buffersize(void);
#endif
static void ifopts_write_new_snaplen(void);
static void ifopts_write_new_descr(void);
static void ifopts_write_new_hide(void);
static void ifopts_write_new_pmode(void);
static void prom_mode_cb(GtkToggleButton *tbt, gpointer udata);

/* Columns options dialog */
#ifdef HAVE_PCAP_CREATE
static GtkWidget *col_monitor_cb;
#endif
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
static GtkWidget *col_buf_cb;
#endif
static GtkWidget *col_snap_cb;
static GtkWidget *col_link_cb, *col_filter_cb, *col_pmode_cb;
static void colopts_edit_destroy_cb(GtkWidget *win, gpointer data);
static void colopts_edit_cb(GtkWidget *w, gpointer data);
static void colopts_edit_ok_cb(GtkWidget *w, gpointer parent_w);

GtkWidget*
capture_prefs_show(void)
{
        GtkWidget       *main_grid;
        GtkWidget       *if_cbxe, *if_lb, *promisc_cb, *pcap_ng_cb, *sync_cb, *auto_scroll_cb, *show_info_cb;
        GtkWidget       *ifopts_lb, *ifopts_bt, *colopts_lb, *colopts_bt;
        GList           *if_list, *combo_list;
        int             err;
        int             row = 0;
        const gchar     *tooltips_text;

        /* Main vertical box */
        capture_window = ws_gtk_box_new(GTK_ORIENTATION_VERTICAL, 7, FALSE);
        gtk_container_set_border_width(GTK_CONTAINER(capture_window), 5);

        /* Main grid */
        main_grid = ws_gtk_grid_new();
        gtk_box_pack_start(GTK_BOX(capture_window), main_grid, FALSE, FALSE, 0);
#if GTK_CHECK_VERSION(3,0,0)
        gtk_widget_set_vexpand(GTK_WIDGET(main_grid), FALSE); /* Ignore VEXPAND requests from children */
#endif
        ws_gtk_grid_set_row_spacing(GTK_GRID(main_grid), 10);
        ws_gtk_grid_set_column_spacing(GTK_GRID(main_grid), 15);
        gtk_widget_show(main_grid);

        /* Default device */
        if_lb = gtk_label_new("Default interface:");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_lb, 0, row, 1, 1);
        gtk_misc_set_alignment(GTK_MISC(if_lb), 1.0f, 0.5f);
        gtk_widget_show(if_lb);

        if_cbxe = gtk_combo_box_text_new_with_entry();
        /*
         * XXX - what if we can't get the list?
         */
        if_list = capture_interface_list(&err, NULL, main_window_update);
        combo_list = build_capture_combo_list(if_list, FALSE);
        free_interface_list(if_list);
        if (combo_list != NULL) {
                GList *combo_entry;
                for (combo_entry = combo_list; combo_entry != NULL; combo_entry = g_list_next(combo_entry)) {
                        gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT(if_cbxe), (const gchar *)combo_entry->data);
                }
        }
        if (prefs.capture_device) {
                gtk_entry_set_text(GTK_ENTRY(gtk_bin_get_child(GTK_BIN(if_cbxe))),
                                   prefs.capture_device);
        }
        else if (combo_list != NULL) {
                gtk_combo_box_set_active(GTK_COMBO_BOX(if_cbxe), 0);
        }
        free_capture_combo_list(combo_list);

        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_cbxe, 1, row, 1, 1);
        tooltips_text = "The default interface to be captured from.";
        gtk_widget_set_tooltip_text(if_lb, tooltips_text);
        gtk_widget_set_tooltip_text(gtk_bin_get_child(GTK_BIN(if_cbxe)), tooltips_text);
        gtk_widget_show(if_cbxe);
        g_object_set_data(G_OBJECT(capture_window), DEVICE_KEY, if_cbxe);
        row++;

        /* Interface properties */
        ifopts_lb = gtk_label_new("Interfaces:");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), ifopts_lb, 0, row, 1, 1);
        gtk_misc_set_alignment(GTK_MISC(ifopts_lb), 1.0f, 0.5f);
        gtk_widget_show(ifopts_lb);

        ifopts_bt = ws_gtk_button_new_from_stock(WIRESHARK_STOCK_EDIT);
        tooltips_text = "Open a dialog box to set various interface options.";
        gtk_widget_set_tooltip_text(ifopts_lb, tooltips_text);
        gtk_widget_set_tooltip_text(ifopts_bt, tooltips_text);
        g_signal_connect(ifopts_bt, "clicked", G_CALLBACK(ifopts_edit_cb), NULL);
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), ifopts_bt, 1, row, 1, 1);
        row++;

        /* Promiscuous mode */
        promisc_cb = create_preference_check_button(main_grid, row++,
            "Capture packets in promiscuous mode on all network cards:",
            "To set this mode on a per interface basis, select the interface first."
            "Usually a network card will only capture the traffic sent to its own network address. "
            "If you want to capture all traffic that the network card can \"see\", mark this option. "
            "See the FAQ for some more details of capturing packets from a switched network. ",
            prefs.capture_prom_mode);
        g_signal_connect(promisc_cb, "toggled", G_CALLBACK(prom_mode_cb), NULL);
        g_object_set_data(G_OBJECT(capture_window), PROM_MODE_KEY, promisc_cb);

        /* Pcap-NG format */
        pcap_ng_cb = create_preference_check_button(main_grid, row++,
            "Capture packets in pcap-ng format:",
            "Capture packets in the next-generation capture file format.",
            prefs.capture_pcap_ng);
        g_object_set_data(G_OBJECT(capture_window), PCAP_NG_KEY, pcap_ng_cb);

        /* Real-time capture */
        sync_cb = create_preference_check_button(main_grid, row++,
            "Update list of packets in real time:",
            "Update the list of packets while capture is in progress. "
            "This can result in dropped packets on high-speed networks.",
            prefs.capture_real_time);
        g_object_set_data(G_OBJECT(capture_window), CAPTURE_REAL_TIME_KEY, sync_cb);

        /* Auto-scroll real-time capture */
        auto_scroll_cb = create_preference_check_button(main_grid, row++,
            "Automatic scrolling in live capture:",
            "Keep the packet list scrolled to the bottom while capturing.",
            prefs.capture_auto_scroll);
        g_object_set_data(G_OBJECT(capture_window), AUTO_SCROLL_KEY, auto_scroll_cb);

        /* Show capture info dialog */
        show_info_cb = create_preference_check_button(main_grid, row++,
            "Hide capture info dialog:",
            "Hide the capture info dialog while capturing. ",
            !prefs.capture_show_info);
        g_object_set_data(G_OBJECT(capture_window), SHOW_INFO_KEY, show_info_cb);

        /* Column properties */
        colopts_lb = gtk_label_new("Columns:");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), colopts_lb, 0, row, 1, 1);
        gtk_misc_set_alignment(GTK_MISC(colopts_lb), 1.0f, 0.5f);
        gtk_widget_show(colopts_lb);

        colopts_bt = ws_gtk_button_new_from_stock(WIRESHARK_STOCK_EDIT);
        tooltips_text = "Open a dialog box to change the visible columns.";
        gtk_widget_set_tooltip_text(colopts_lb, tooltips_text);
        gtk_widget_set_tooltip_text(colopts_bt, tooltips_text);
        g_signal_connect(colopts_bt, "clicked", G_CALLBACK(colopts_edit_cb), NULL);
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), colopts_bt, 1, row, 1, 1);
        row++;

        /* Show 'em what we got */
        gtk_widget_show_all(capture_window);

        return(capture_window);
}

void
capture_prefs_fetch(GtkWidget *w)
{
        GtkWidget *if_cbxe, *promisc_cb, *pcap_ng_cb, *sync_cb, *auto_scroll_cb, *show_info_cb;
        gchar   *if_text;

        if_cbxe    = (GtkWidget *)g_object_get_data(G_OBJECT(w), DEVICE_KEY);
        promisc_cb = (GtkWidget *)g_object_get_data(G_OBJECT(w), PROM_MODE_KEY);
        pcap_ng_cb = (GtkWidget *)g_object_get_data(G_OBJECT(w), PCAP_NG_KEY);
        sync_cb    = (GtkWidget *)g_object_get_data(G_OBJECT(w), CAPTURE_REAL_TIME_KEY);
        auto_scroll_cb = (GtkWidget *)g_object_get_data(G_OBJECT(w), AUTO_SCROLL_KEY);
        show_info_cb = (GtkWidget *)g_object_get_data(G_OBJECT(w), SHOW_INFO_KEY);

        if (prefs.capture_device != NULL) {
                g_free(prefs.capture_device);
                prefs.capture_device = NULL;
        }
        if_text = g_strdup(gtk_entry_get_text(GTK_ENTRY(gtk_bin_get_child(GTK_BIN(if_cbxe)))));
        /* Strip out white space */
        g_strstrip(if_text);
        /* If there was nothing but white space, treat that as an
           indication that the user doesn't want to wire in a default
           device, and just wants the first device in the list chosen. */
        if (*if_text == '\0') {
                g_free(if_text);
                if_text = NULL;
        }

        /* Ensure capture device is not NULL */
        if (if_text == NULL)
                if_text = g_strdup("");
        prefs.capture_device = if_text;

        prefs.capture_prom_mode = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(promisc_cb));

        prefs.capture_pcap_ng = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(pcap_ng_cb));

        prefs.capture_real_time = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(sync_cb));

        prefs.capture_auto_scroll = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(auto_scroll_cb));

        prefs.capture_show_info = !(gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(show_info_cb)));
}

void
capture_prefs_apply(GtkWidget *w _U_)
{
}

void
capture_prefs_destroy(GtkWidget *w)
{
        GtkWidget *caller = gtk_widget_get_toplevel(w);
        GtkWidget *dlg;

        /* Is there an interface descriptions dialog associated with this
           Preferences dialog? */
        dlg = (GtkWidget *)g_object_get_data(G_OBJECT(caller), IFOPTS_DIALOG_PTR_KEY);

        if (dlg != NULL) {
                /* Yes.  Destroy it. */
                window_destroy(dlg);
        }

        /* Is there an column descriptions dialog associated with this
           Preferences dialog? */
        dlg = (GtkWidget *)g_object_get_data(G_OBJECT(caller), COLOPTS_DIALOG_PTR_KEY);

        if (dlg != NULL) {
                /* Yes.  Destroy it. */
                window_destroy(dlg);
        }
}

/*
 * Create an edit interface options dialog.
 */
enum
{
        DEVICE_COLUMN,
        DESC_COLUMN,
#ifdef HAVE_PCAP_CREATE
        DEF_MONITOR_MODE_COLUMN,
#endif
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
        BUF_COLUMN,
#endif
        HASSNAP_COLUMN,
        SNAPLEN_COLUMN,
        PMODE_COLUMN,
        DEF_LINK_LAYER_COLUMN,
        COMMENT_COLUMN,
        HIDE_COLUMN,
        DLT_COLUMN,
        N_COLUMN /* The number of columns */
};


static void
colopts_edit_cb(GtkWidget *w, gpointer data _U_)
{
        GtkWidget       *colopts_edit_dlg, *main_hb, *main_grid,
                                                *ed_opts_fr, *main_vb,
                                                *bbox, *ok_bt, *cancel_bt, *help_bt, *column_lb,
                                                *col_link_lb,
#ifdef HAVE_PCAP_CREATE
                                                *col_monitor_lb,
#endif
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
                                                *col_buf_lb,
#endif
                                                *col_filter_lb, *col_pmode_lb,
                          *col_snap_lb;

        int row = 0;

        GtkWidget   *caller   = gtk_widget_get_toplevel(w);

        /* Has an edit dialog box already been opened for that top-level
           widget? */
        colopts_edit_dlg = (GtkWidget *)g_object_get_data(G_OBJECT(caller), COLOPTS_DIALOG_PTR_KEY);
        if (colopts_edit_dlg != NULL) {
                /* Yes.  Just re-activate that dialog box. */
                reactivate_window(colopts_edit_dlg);
                return;
        }

        /* create a new dialog */
        colopts_edit_dlg = dlg_conf_window_new("Wireshark: Preferences: Capture Options Columns");
        gtk_window_set_default_size(GTK_WINDOW(colopts_edit_dlg), 300, 200);

        main_vb = ws_gtk_box_new(GTK_ORIENTATION_VERTICAL, 1, FALSE);
        gtk_container_set_border_width(GTK_CONTAINER(main_vb), 5);
        gtk_container_add(GTK_CONTAINER(colopts_edit_dlg), main_vb);
        gtk_widget_show(main_vb);

        /* create edit options frame */
        ed_opts_fr = gtk_frame_new("Columns");
        gtk_box_pack_start(GTK_BOX(main_vb), ed_opts_fr, FALSE, FALSE, 0);
        gtk_widget_show(ed_opts_fr);

        main_hb = ws_gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 5, TRUE);
        gtk_container_set_border_width(GTK_CONTAINER(main_hb), 3);
        gtk_container_add(GTK_CONTAINER(ed_opts_fr), main_hb);
        gtk_widget_show(main_hb);

        /* grid to hold description text entry and hide button */
        main_grid = ws_gtk_grid_new();
        gtk_box_pack_start(GTK_BOX(main_hb), main_grid, TRUE, FALSE, 10);
        ws_gtk_grid_set_row_spacing(GTK_GRID(main_grid), 10);
        ws_gtk_grid_set_column_spacing(GTK_GRID(main_grid), 10);
        gtk_widget_show(main_grid);

        column_lb = gtk_label_new("Select the columns to be displayed");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), column_lb, 0, row, 2, 1);
        gtk_misc_set_alignment(GTK_MISC(column_lb), 0, 0.5f);
        gtk_widget_show(column_lb);
        row++;

        /* create "Link Layer" label and button */
        col_link_cb = gtk_check_button_new();
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), col_link_cb, 0, row, 1, 1);
        if (!prefs.capture_columns || prefs_capture_options_dialog_column_is_visible("LINK"))
                gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(col_link_cb), TRUE);
        else
                gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(col_link_cb), FALSE);
        gtk_widget_show(col_link_cb);

        col_link_lb = gtk_label_new("Link layer header");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), col_link_lb, 1, row, 1, 1);
        gtk_misc_set_alignment(GTK_MISC(col_link_lb), 0, 0.5f);
        gtk_widget_show(col_link_lb);
        row++;

        /* create "Promiscuous Mode" label and button */
        col_pmode_cb = gtk_check_button_new();
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), col_pmode_cb, 0, row, 1, 1);
        if (!prefs.capture_columns || prefs_capture_options_dialog_column_is_visible("PMODE"))
                gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(col_pmode_cb), TRUE);
        else
                gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(col_pmode_cb), FALSE);
        gtk_widget_show(col_pmode_cb);

        col_pmode_lb = gtk_label_new("Promiscuous Mode");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), col_pmode_lb, 1, row, 1, 1);
        gtk_misc_set_alignment(GTK_MISC(col_pmode_lb), 0, 0.5f);
        gtk_widget_show(col_pmode_lb);
        row++;

        /* create "Snap length in Bytes" label and button */
        col_snap_cb = gtk_check_button_new();
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), col_snap_cb, 0, row, 1, 1);
        if (!prefs.capture_columns || prefs_capture_options_dialog_column_is_visible("SNAPLEN"))
                gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(col_snap_cb), TRUE);
        else
                gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(col_snap_cb), FALSE);
        gtk_widget_show(col_snap_cb);

        col_snap_lb = gtk_label_new("Snap length in Bytes");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), col_snap_lb, 1, row, 1, 1);
        gtk_misc_set_alignment(GTK_MISC(col_snap_lb), 0, 0.5f);
        gtk_widget_show(col_snap_lb);
        row++;

#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
        /* create "Buffer in Megabytes" label and button */
        col_buf_cb = gtk_check_button_new();
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), col_buf_cb, 0, row, 1, 1);
        if (!prefs.capture_columns || prefs_capture_options_dialog_column_is_visible("BUFFER"))
                gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(col_buf_cb), TRUE);
        else
                gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(col_buf_cb), FALSE);
        gtk_widget_show(col_buf_cb);

        col_buf_lb = gtk_label_new("Buffer in Megabytes");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), col_buf_lb, 1, row, 1, 1);
        gtk_misc_set_alignment(GTK_MISC(col_buf_lb), 0, 0.5f);
        gtk_widget_show(col_buf_lb);
        row++;
#endif

#ifdef HAVE_PCAP_CREATE
        /* create "monitor mode" label and button */
        col_monitor_lb = gtk_label_new("Monitor mode");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), col_monitor_lb, 1, row, 1, 1);
        gtk_misc_set_alignment(GTK_MISC(col_monitor_lb), 0, 0.5f);
        gtk_widget_show(col_monitor_lb);

        col_monitor_cb = gtk_check_button_new();
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), col_monitor_cb, 0, row, 1, 1);
        if (!prefs.capture_columns || prefs_capture_options_dialog_column_is_visible("MONITOR"))
                gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(col_monitor_cb), TRUE);
        else
                gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(col_monitor_cb), FALSE);
        gtk_widget_show(col_monitor_cb);

        row++;
#endif

        /* create "Capture Filter" label and button */
        col_filter_lb = gtk_label_new("Capture filter");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), col_filter_lb, 1, row, 1, 1);
        gtk_misc_set_alignment(GTK_MISC(col_filter_lb), 0, 0.5f);
        gtk_widget_show(col_filter_lb);

        col_filter_cb = gtk_check_button_new();
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), col_filter_cb, 0, row, 1, 1);
        if (!prefs.capture_columns || prefs_capture_options_dialog_column_is_visible("FILTER"))
                gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(col_filter_cb), TRUE);
        else
                gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(col_filter_cb), FALSE);
        gtk_widget_show(col_filter_cb);

        row++;

        /* button row: OK and Cancel buttons */
        bbox = dlg_button_row_new(GTK_STOCK_OK, GTK_STOCK_CANCEL, GTK_STOCK_HELP, NULL);
        gtk_box_pack_start(GTK_BOX(main_vb), bbox, FALSE, FALSE, 0);
        gtk_widget_show(bbox);

        ok_bt = (GtkWidget *)g_object_get_data(G_OBJECT(bbox), GTK_STOCK_OK);
        gtk_widget_set_tooltip_text(ok_bt, "Save changes and exit dialog");
        g_signal_connect(ok_bt, "clicked", G_CALLBACK(colopts_edit_ok_cb), colopts_edit_dlg);

        cancel_bt = (GtkWidget *)g_object_get_data(G_OBJECT(bbox), GTK_STOCK_CANCEL);
        gtk_widget_set_tooltip_text(cancel_bt, "Cancel and exit dialog");
        window_set_cancel_button(colopts_edit_dlg, cancel_bt, window_cancel_button_cb);

        help_bt = (GtkWidget *)g_object_get_data(G_OBJECT(bbox), GTK_STOCK_HELP);
        g_signal_connect(help_bt, "clicked", G_CALLBACK(topic_cb),
                         (gpointer)HELP_CAPTURE_INTERFACE_OPTIONS_DIALOG);
        gtk_widget_set_tooltip_text (help_bt, "Show topic specific help");

        gtk_widget_grab_default(ok_bt);

        g_signal_connect(colopts_edit_dlg, "delete_event", G_CALLBACK(window_delete_event_cb), NULL);
        /* Call a handler when we're destroyed, so we can inform
                 our caller, if any, that we've been destroyed. */
        g_signal_connect(colopts_edit_dlg, "destroy", G_CALLBACK(colopts_edit_destroy_cb), NULL);

        /* Set the key for the new dialog to point to our caller. */
        g_object_set_data(G_OBJECT(colopts_edit_dlg), COLOPTS_CALLER_PTR_KEY, caller);
        /* Set the key for the caller to point to us */
        g_object_set_data(G_OBJECT(caller), COLOPTS_DIALOG_PTR_KEY, colopts_edit_dlg);

        gtk_widget_show(colopts_edit_dlg); /* triggers ifopts_edit_ifsel_cb() with the */
                                           /* "interfaces" TreeView first row selected */
        window_present(colopts_edit_dlg);
}


static void
ifopts_edit_cb(GtkWidget *w, gpointer data _U_)
{
        GtkWidget         *ifopts_edit_dlg, *cur_scr_win, *main_hb, *main_grid,
                          *cur_opts_fr, *ed_opts_fr, *main_vb,
                          *if_descr_lb,
                          *if_hide_lb,
                          *bbox, *ok_bt, *cancel_bt, *help_bt;

        GtkListStore      *list_store;
        GtkWidget         *list;
        GtkTreeViewColumn *column;
        GtkCellRenderer   *renderer;
        GtkTreeView       *list_view;
        GtkTreeSelection  *selection;
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
        GtkAdjustment     *buffer_size_adj;
#endif
        GtkAdjustment     *snaplen_adj;
        int row = 0;

        GtkWidget   *caller   = gtk_widget_get_toplevel(w);

        /* Has an edit dialog box already been opened for that top-level
           widget? */
        ifopts_edit_dlg = (GtkWidget *)g_object_get_data(G_OBJECT(caller), IFOPTS_DIALOG_PTR_KEY);
        if (ifopts_edit_dlg != NULL) {
                /* Yes.  Just re-activate that dialog box. */
                reactivate_window(ifopts_edit_dlg);
                return;
        }

        /* create a new dialog */
        ifopts_edit_dlg = dlg_conf_window_new("Wireshark: Preferences: Interface Options");
        gtk_window_set_default_size(GTK_WINDOW(ifopts_edit_dlg), 1000, 500);

        main_vb = ws_gtk_box_new(GTK_ORIENTATION_VERTICAL, 1, FALSE);
        gtk_container_set_border_width(GTK_CONTAINER(main_vb), 5);
        gtk_container_add(GTK_CONTAINER(ifopts_edit_dlg), main_vb);
        gtk_widget_show(main_vb);

        /* create current options frame */
        cur_opts_fr = gtk_frame_new("Interfaces");
        gtk_box_pack_start(GTK_BOX(main_vb), cur_opts_fr, TRUE, TRUE, 0);
        gtk_widget_show(cur_opts_fr);

        /* create a scrolled window to pack the current options TreeView widget into */
        cur_scr_win = scrolled_window_new(NULL, NULL);
        gtk_container_set_border_width(GTK_CONTAINER(cur_scr_win), 3);
        gtk_container_add(GTK_CONTAINER(cur_opts_fr), cur_scr_win);
        gtk_widget_show(cur_scr_win);

        /*
         * Create current options TreeView.
         */
        list_store = gtk_list_store_new(N_COLUMN,       /* Total number of columns XXX  */
                                        G_TYPE_STRING,  /* Device                       */
                                        G_TYPE_STRING,  /* Description                  */
#ifdef HAVE_PCAP_CREATE
                                        G_TYPE_BOOLEAN, /* Monitor mode         */
#endif
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
                                        G_TYPE_INT,                     /* Buffer size                          */
#endif
                                        G_TYPE_BOOLEAN, /* Has snap length              */
                                        G_TYPE_INT,                     /* Snap length                          */
                                        G_TYPE_BOOLEAN, /* Promiscuous mode             */
                                        G_TYPE_STRING,  /* Default link-layer           */
                                        G_TYPE_STRING,  /* Comment                      */
                                        G_TYPE_BOOLEAN, /* Hide?                        */
                                        G_TYPE_INT);    /* Dlt                          */

        list = gtk_tree_view_new_with_model (GTK_TREE_MODEL (list_store));

        list_view = GTK_TREE_VIEW(list);

        /* The view now holds a reference.  We can get rid of our own reference */
        g_object_unref (G_OBJECT (list_store));

        /*
         * Create the first column packet, associating the "text" attribute of the
         * cell_renderer to the first column of the model
         */
        renderer = gtk_cell_renderer_text_new ();
        column = gtk_tree_view_column_new_with_attributes ("Device", renderer,
                                                           "text", DEVICE_COLUMN,
                                                           NULL);

        gtk_tree_view_column_set_resizable(column, TRUE);
        gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_FIXED);
#ifdef _WIN32
        gtk_tree_view_column_set_min_width(column, 230);
#else
        gtk_tree_view_column_set_min_width(column, 70);
#endif
        /* Add the column to the view. */
        gtk_tree_view_append_column (list_view, column);

        renderer = gtk_cell_renderer_text_new ();
        column = gtk_tree_view_column_new_with_attributes ("Description", renderer,
                                                           "text", DESC_COLUMN,
                                                           NULL);

        gtk_tree_view_column_set_resizable(column, TRUE);
        gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_FIXED);
        gtk_tree_view_column_set_min_width(column, 260);
        /* Add the column to the view. */
        gtk_tree_view_append_column (list_view, column);

#ifdef HAVE_PCAP_CREATE
        /*
         * XXX - for some reason, this doesn't show up.
         */
        renderer = gtk_cell_renderer_toggle_new ();
        column = gtk_tree_view_column_new_with_attributes ("Default to monitor mode", renderer,
                                                           "active", DEF_MONITOR_MODE_COLUMN,
                                                           NULL);

        gtk_tree_view_column_set_resizable(column, FALSE);
        gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_FIXED);
        /* Add the column to the view. */
        gtk_tree_view_append_column (list_view, column);
#endif

#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
        renderer = gtk_cell_renderer_spin_new ();
        buffer_size_adj = (GtkAdjustment *) gtk_adjustment_new(DEFAULT_CAPTURE_BUFFER_SIZE, 1, 65535, 1.0, 10.0, 0.0);
        g_object_set(G_OBJECT(renderer), "adjustment", buffer_size_adj, NULL);
        column = gtk_tree_view_column_new_with_attributes ("Default buffer size (MiB)", renderer,
                                                           "text", BUF_COLUMN,
                                                           NULL);

        gtk_tree_view_column_set_resizable(column, TRUE);
        gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_FIXED);
        /* Add the column to the view. */
        gtk_tree_view_append_column (list_view, column);
#endif
        renderer = gtk_cell_renderer_toggle_new ();
        column = gtk_tree_view_column_new_with_attributes ("Has snap length mode", renderer,
                                                           "active", HASSNAP_COLUMN,
                                                           NULL);
        gtk_tree_view_column_set_resizable(column, FALSE);
        /*gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_FIXED);*/
        renderer = gtk_cell_renderer_spin_new ();
        snaplen_adj = (GtkAdjustment *) gtk_adjustment_new(WTAP_MAX_PACKET_SIZE, 1, WTAP_MAX_PACKET_SIZE, 1.0, 10.0, 0.0);
        g_object_set(G_OBJECT(renderer), "adjustment", snaplen_adj, NULL);
        column = gtk_tree_view_column_new_with_attributes ("Default snap length", renderer,
                                                           "text", SNAPLEN_COLUMN,
                                                           NULL);
        gtk_tree_view_column_set_resizable(column, FALSE);

        renderer = gtk_cell_renderer_toggle_new ();
        column = gtk_tree_view_column_new_with_attributes ("Default to promiscuous mode", renderer,
                                                           "active", PMODE_COLUMN,
                                                           NULL);

        gtk_tree_view_column_set_resizable(column, FALSE);
        gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_FIXED);
        /* Add the column to the view. */
        gtk_tree_view_append_column (list_view, column);

        renderer = gtk_cell_renderer_text_new ();
        column = gtk_tree_view_column_new_with_attributes ("Default link-layer", renderer,
                                                           "text", DEF_LINK_LAYER_COLUMN,
                                                           NULL);

        gtk_tree_view_column_set_resizable(column, TRUE);
        gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_FIXED);
        gtk_tree_view_column_set_min_width(column, 230);
        /* Add the column to the view. */
        gtk_tree_view_append_column (list_view, column);

        renderer = gtk_cell_renderer_text_new ();
        column = gtk_tree_view_column_new_with_attributes ("Comment", renderer,
                                                           "text", COMMENT_COLUMN,
                                                           NULL);

        gtk_tree_view_column_set_resizable(column, TRUE);
        gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_FIXED);
        gtk_tree_view_column_set_min_width(column, 100);
        /* Add the column to the view. */
        gtk_tree_view_append_column (list_view, column);

        renderer = gtk_cell_renderer_toggle_new ();
        column = gtk_tree_view_column_new_with_attributes ("Hide?", renderer,
                                                           "active", HIDE_COLUMN,
                                                           NULL);

        gtk_tree_view_column_set_resizable(column, FALSE);
        gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_FIXED);
        /* Add the column to the view. */
        gtk_tree_view_append_column (list_view, column);

#if 0
        /* Don't show the DLT column */
        renderer = gtk_cell_renderer_text_new ();
        column = gtk_tree_view_column_new_with_attributes ("DLT", renderer,
                                                           "text", DLT_COLUMN,
                                                           NULL);

        gtk_tree_view_column_set_resizable(column, TRUE);
        gtk_tree_view_column_set_sizing(column, GTK_TREE_VIEW_COLUMN_FIXED);
        gtk_tree_view_column_set_min_width(column, 40);
        /* Add the column to the view. */
        gtk_tree_view_append_column (list_view, column);
#endif
        /* Setup the selection handler */
        selection = gtk_tree_view_get_selection(list_view);
        gtk_tree_selection_set_mode(selection, GTK_SELECTION_SINGLE);

        cur_list = list;
        gtk_container_add(GTK_CONTAINER(cur_scr_win), cur_list);

        if_selection = selection;

        g_signal_connect (G_OBJECT (selection), "changed", /* select_row */
                          G_CALLBACK (ifopts_edit_ifsel_cb),
                          NULL);

        gtk_widget_show(cur_list);

        /* add interface names to cell */
        ifopts_if_liststore_add();

        /* create edit options frame */
        ed_opts_fr = gtk_frame_new("Properties");
        gtk_box_pack_start(GTK_BOX(main_vb), ed_opts_fr, FALSE, FALSE, 0);
        gtk_widget_show(ed_opts_fr);

        main_hb = ws_gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 5, TRUE);
        gtk_container_set_border_width(GTK_CONTAINER(main_hb), 3);
        gtk_container_add(GTK_CONTAINER(ed_opts_fr), main_hb);
        gtk_widget_show(main_hb);

        /* grid to hold description text entry and hide button */
        main_grid = ws_gtk_grid_new();
        gtk_box_pack_start(GTK_BOX(main_hb), main_grid, TRUE, FALSE, 10);
        ws_gtk_grid_set_row_spacing(GTK_GRID(main_grid), 10);
        ws_gtk_grid_set_column_spacing(GTK_GRID(main_grid), 10);
        gtk_widget_show(main_grid);

        if_dev_lb = gtk_label_new("Device:");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_dev_lb, 0, row, 1, 1);
        gtk_misc_set_alignment(GTK_MISC(if_dev_lb), 1.0f, 0.5f);
        gtk_widget_show(if_dev_lb);

        if_dev_lb = gtk_label_new("");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_dev_lb, 1, row, 1, 1);
        gtk_misc_set_alignment(GTK_MISC(if_dev_lb), 0.0f, 0.5f);
        gtk_widget_show(if_dev_lb);
        row++;

        if_name_lb = gtk_label_new("Description:");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_name_lb, 0, row, 1, 1);
        gtk_misc_set_alignment(GTK_MISC(if_name_lb), 1.0f, 0.5f);
        gtk_widget_show(if_name_lb);

        if_name_lb = gtk_label_new("");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_name_lb, 1, row, 1, 1);
        gtk_misc_set_alignment(GTK_MISC(if_name_lb), 0.0f, 0.5f);
        gtk_widget_show(if_name_lb);
        row++;

#ifdef HAVE_PCAP_CREATE
        /* create "monitor mode" label and button */
        if_monitor_lb = gtk_label_new("Monitor mode:");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_monitor_lb, 0, row, 1, 1);
        gtk_misc_set_alignment(GTK_MISC(if_monitor_lb), 1.0f, 0.5f);
        gtk_widget_show(if_monitor_lb);

        if_monitor_cb = gtk_check_button_new();
        g_signal_connect(if_monitor_cb, "toggled", G_CALLBACK(ifopts_edit_monitor_changed_cb),
                        cur_list);
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_monitor_cb, 1, row, 1, 1);
        gtk_widget_show(if_monitor_cb);
        row++;
#endif

#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
        if_buffersize_lb = gtk_label_new("Default buffer size (MiB):");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_buffersize_lb, 0, row, 1, 1);
        gtk_misc_set_alignment(GTK_MISC(if_buffersize_lb), 1.0f, 0.5f);
        gtk_widget_show(if_buffersize_lb);
        buffer_size_adj = (GtkAdjustment *) gtk_adjustment_new(DEFAULT_CAPTURE_BUFFER_SIZE, 1, 65535, 1.0, 10.0, 0.0);
        if_buffersize_cb = gtk_spin_button_new (buffer_size_adj, 0, 0);
        g_signal_connect(if_buffersize_cb, "value-changed", G_CALLBACK(ifopts_edit_buffersize_changed_cb),
                        cur_list);
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_buffersize_cb, 1, row, 1, 1);
        gtk_widget_show(if_buffersize_cb);
        row++;
#endif

        if_snaplen_lb = gtk_label_new("Limit each packet to:");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_snaplen_lb, 0, row, 1, 1);
        gtk_misc_set_alignment(GTK_MISC(if_snaplen_lb), 1.0f, 0.5f);
        gtk_widget_show(if_snaplen_lb);
        if_snaplen_tg = gtk_check_button_new();
        g_signal_connect(if_snaplen_tg, "toggled", G_CALLBACK(ifopts_edit_hassnap_changed_cb),
                        cur_list);
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_snaplen_tg, 2, row, 1, 1);
        gtk_widget_show(if_snaplen_tg);
        snaplen_adj = (GtkAdjustment *) gtk_adjustment_new(65535, 1, 65535, 1.0, 10.0, 0.0);
        if_snaplen_cb = gtk_spin_button_new (snaplen_adj, 0, 0);
        g_signal_connect(if_snaplen_cb, "value-changed", G_CALLBACK(ifopts_edit_snaplen_changed_cb),
                        cur_list);
        gtk_spin_button_set_numeric(GTK_SPIN_BUTTON (if_snaplen_cb), TRUE);
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_snaplen_cb, 1, row, 1, 1);
        gtk_widget_show(if_snaplen_cb);
        row++;

        /* create "promiscuous mode" label and button */
        if_pmode_lb = gtk_label_new("Promiscuous mode:");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_pmode_lb, 0, row, 1, 1);
        gtk_misc_set_alignment(GTK_MISC(if_pmode_lb), 1.0f, 0.5f);
        gtk_widget_show(if_pmode_lb);

        if_pmode_cb = gtk_check_button_new();
        g_signal_connect(if_pmode_cb, "toggled", G_CALLBACK(ifopts_edit_pmode_changed_cb),
                        cur_list);
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_pmode_cb, 1, row, 1, 1);
        gtk_widget_show(if_pmode_cb);
        row++;

        if_linktype_lb = gtk_label_new("Default link-layer header type:");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_linktype_lb, 0, row, 1, 1);
        gtk_misc_set_alignment(GTK_MISC(if_linktype_lb), 1.0f, 0.5f);
        gtk_widget_show(if_linktype_lb);

        if_linktype_cb = gtk_combo_box_text_new();
        num_linktypes = 0;
        interfaces_info_nochange = FALSE;
        g_signal_connect(if_linktype_cb, "changed", G_CALLBACK(ifopts_edit_linktype_changed_cb),
                        cur_list);
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_linktype_cb, 1, row, 1, 1);
        gtk_widget_show(if_linktype_cb);
        row++;

        /* create interface description label and text entry */
        if_descr_lb = gtk_label_new("Comment:");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_descr_lb, 0, row, 1, 1);
        gtk_misc_set_alignment(GTK_MISC(if_descr_lb), 1.0f, 0.5f);
        gtk_widget_show(if_descr_lb);

        if_descr_te = gtk_entry_new();
        g_signal_connect(if_descr_te, "changed", G_CALLBACK(ifopts_edit_descr_changed_cb),
                        cur_list);
        gtk_entry_set_max_length(GTK_ENTRY(if_descr_te), IFOPTS_MAX_DESCR_LEN);
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_descr_te, 1, row, 1, 1);
        gtk_widget_show(if_descr_te);
        row++;

        /* create "hide interface" label and button */
        if_hide_lb = gtk_label_new("Hide interface?:");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_hide_lb, 0, row, 1, 1);
        gtk_misc_set_alignment(GTK_MISC(if_hide_lb), 1.0f, 0.5f);
        gtk_widget_show(if_hide_lb);

        if_hide_cb = gtk_check_button_new();
        g_signal_connect(if_hide_cb, "toggled", G_CALLBACK(ifopts_edit_hide_changed_cb),
                        cur_list);
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_hide_cb, 1, row, 1, 1);
        gtk_widget_show(if_hide_cb);

        if_default_if_lb = gtk_label_new("(Default interface cannot be hidden)");
        ws_gtk_grid_attach_defaults(GTK_GRID(main_grid), if_default_if_lb, 1, row, 2, 1);
        gtk_misc_set_alignment(GTK_MISC(if_default_if_lb), 0.15f, 0.5f);
        row++;

        /* button row: OK and Cancel buttons */
        bbox = dlg_button_row_new(GTK_STOCK_OK, GTK_STOCK_CANCEL, GTK_STOCK_HELP, NULL);
        gtk_box_pack_start(GTK_BOX(main_vb), bbox, FALSE, FALSE, 0);
        gtk_widget_show(bbox);

        ok_bt = (GtkWidget *)g_object_get_data(G_OBJECT(bbox), GTK_STOCK_OK);
        gtk_widget_set_tooltip_text(ok_bt, "Save changes and exit dialog");
        g_signal_connect(ok_bt, "clicked", G_CALLBACK(ifopts_edit_ok_cb), ifopts_edit_dlg);

        cancel_bt = (GtkWidget *)g_object_get_data(G_OBJECT(bbox), GTK_STOCK_CANCEL);
        gtk_widget_set_tooltip_text(cancel_bt, "Cancel and exit dialog");
        window_set_cancel_button(ifopts_edit_dlg, cancel_bt, window_cancel_button_cb);

        help_bt = (GtkWidget *)g_object_get_data(G_OBJECT(bbox), GTK_STOCK_HELP);
        g_signal_connect(help_bt, "clicked", G_CALLBACK(topic_cb),
                         (gpointer)HELP_CAPTURE_INTERFACE_OPTIONS_DIALOG);
        gtk_widget_set_tooltip_text (help_bt, "Show topic specific help");

        gtk_widget_grab_default(ok_bt);

        g_signal_connect(ifopts_edit_dlg, "delete_event", G_CALLBACK(window_delete_event_cb),
                         NULL);
        /* Call a handler when we're destroyed, so we can inform
           our caller, if any, that we've been destroyed. */
        g_signal_connect(ifopts_edit_dlg, "destroy", G_CALLBACK(ifopts_edit_destroy_cb), NULL);

        /* Set the key for the new dialog to point to our caller. */
        g_object_set_data(G_OBJECT(ifopts_edit_dlg), IFOPTS_CALLER_PTR_KEY, caller);
        /* Set the key for the caller to point to us */
        g_object_set_data(G_OBJECT(caller), IFOPTS_DIALOG_PTR_KEY, ifopts_edit_dlg);

        gtk_widget_show(ifopts_edit_dlg); /* triggers ifopts_edit_ifsel_cb() with the  */
                                          /*  "interfaces" TreeView first row selected */
        window_present(ifopts_edit_dlg);
}

/*
 * User selected "OK". Create/write preferences strings.
 */
static void
colopts_edit_ok_cb(GtkWidget *w _U_, gpointer parent_w)
{
        g_list_free(prefs.capture_columns);
        prefs.capture_columns = NULL;
        prefs.capture_columns = g_list_append(prefs.capture_columns, g_strdup("INTERFACE"));
        if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(col_link_cb))) {
                prefs.capture_columns = g_list_append(prefs.capture_columns, g_strdup("LINK"));
        }
        if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(col_pmode_cb))) {
                prefs.capture_columns = g_list_append(prefs.capture_columns, g_strdup("PMODE"));
        }
        if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(col_snap_cb))) {
                prefs.capture_columns = g_list_append(prefs.capture_columns, g_strdup("SNAPLEN"));
        }
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
        if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(col_buf_cb))) {
                prefs.capture_columns = g_list_append(prefs.capture_columns, g_strdup("BUFFER"));
        }
#endif
#if defined (HAVE_PCAP_CREATE)
        if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(col_monitor_cb))) {
                prefs.capture_columns = g_list_append(prefs.capture_columns, g_strdup("MONITOR"));
        }
#endif
        if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(col_filter_cb))) {
                prefs.capture_columns = g_list_append(prefs.capture_columns, g_strdup("FILTER"));
        }
        /* Now nuke this window. */
        gtk_grab_remove(GTK_WIDGET(parent_w));
        window_destroy(GTK_WIDGET(parent_w));
        if (capture_dlg_window_present()) {
                update_visible_tree_view_columns();
                update_visible_columns_menu ();
        }
}

/*
 * User selected "OK". Create/write preferences strings.
 */
static void
ifopts_edit_ok_cb(GtkWidget *w _U_, gpointer parent_w)
{
        if (if_selection){ /* XXX: Cannot be NULL ?? */
#ifdef HAVE_PCAP_CREATE
                /* create/write new monitor-mode interfaces string */
                ifopts_write_new_monitor_mode();
#endif

                /* create/write new interfaces link-layer string */
                ifopts_write_new_linklayer();

                /* create/write new interfaces description string */
                ifopts_write_new_descr();

                /* create/write new "hidden" interfaces string */
                ifopts_write_new_hide();

#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
                /* create/write new "buffersize" interfaces string */
                ifopts_write_new_buffersize();
#endif

                /* create/write new "snaplen" interfaces string */
                ifopts_write_new_snaplen();
                /* create/write new promiscuous mode interfaces string */
                ifopts_write_new_pmode();
        }

        /* Update everything that shows an interface list that includes
           local interfaces, as we may have changed something that
           affects how those lists are displayed. */
        refresh_local_interface_lists();

        /* Now nuke this window. */
        gtk_grab_remove(GTK_WIDGET(parent_w));
        window_destroy(GTK_WIDGET(parent_w));
}

static void
colopts_edit_destroy_cb(GtkWidget *win, gpointer data _U_)
{
        GtkWidget *caller;

        /* Get the widget that requested that we be popped up, if any.
           (It should arrange to destroy us if it's destroyed, so
           that we don't get a pointer to a non-existent window here.) */
        caller = (GtkWidget *)g_object_get_data(G_OBJECT(win), COLOPTS_CALLER_PTR_KEY);

        if (caller != NULL) {
                /* Tell it we no longer exist. */
                g_object_set_data(G_OBJECT(caller), COLOPTS_DIALOG_PTR_KEY, NULL);
        }
}

static void
ifopts_edit_destroy_cb(GtkWidget *win, gpointer data _U_)
{
        GtkWidget *caller;

        /* Get the widget that requested that we be popped up, if any.
           (It should arrange to destroy us if it's destroyed, so
           that we don't get a pointer to a non-existent window here.) */
        caller = (GtkWidget *)g_object_get_data(G_OBJECT(win), IFOPTS_CALLER_PTR_KEY);

        if (caller != NULL) {
                /* Tell it we no longer exist. */
                g_object_set_data(G_OBJECT(caller), IFOPTS_DIALOG_PTR_KEY, NULL);
        }
}

static gint
ifopts_description_to_val (const char *if_name, gboolean monitor_mode, const char *descr)
{
        if_capabilities_t *caps;
        int dlt = -1;

        caps = capture_get_if_capabilities(if_name, monitor_mode, NULL, NULL, main_window_update);
        if (caps != NULL) {
                if (caps->data_link_types != NULL) {
                        GList  *lt_entry;
                        /* XXX: Code skips first entry because that's the default ??? */
                        for (lt_entry = g_list_next(caps->data_link_types);
                            lt_entry != NULL;
                            lt_entry = g_list_next(lt_entry)) {
                                data_link_info_t *dli_p = (data_link_info_t *)lt_entry->data;
                                if (dli_p->description) {
                                        if (strcmp(dli_p->description, descr) == 0) {
                                                dlt = dli_p->dlt;
                                                break;
                                        }
                                } else {
                                        if (strcmp(dli_p->name, descr) == 0) {
                                                dlt = dli_p->dlt;
                                                break;
                                        }
                                }
                        }
                }
                free_if_capabilities(caps);
        }
        return dlt;
}

/*
 * Interface selected callback; update displayed widgets.
 */
static void
ifopts_edit_ifsel_cb(GtkTreeSelection   *selection _U_,
                     gpointer            data _U_)
{
        GtkTreeIter         iter;
        GtkTreeModel       *model;
        gchar              *desc, *comment, *text;
        gchar              *if_name, *linktype;
#ifdef HAVE_PCAP_CREATE
        gboolean            monitor_mode;
#endif
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
        gint                buffersize;
#endif
        gint                snaplen;
        gboolean            hide, hide_enabled = TRUE, hassnap = FALSE, pmode;
        gboolean            pmode_pref;
        if_capabilities_t  *caps;
        gint                selected = 0;

        /* Get list_store data for currently selected interface */
        if (!gtk_tree_selection_get_selected (if_selection, &model, &iter)){
                return;
        }
        gtk_tree_model_get(model, &iter,
                           DEVICE_COLUMN,             &if_name,
                           DESC_COLUMN,               &desc,
#ifdef HAVE_PCAP_CREATE
                           DEF_MONITOR_MODE_COLUMN,   &monitor_mode,
#endif
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
                           BUF_COLUMN,                &buffersize,
#endif
                           HASSNAP_COLUMN,            &hassnap,
                           SNAPLEN_COLUMN,            &snaplen,
                           PMODE_COLUMN,              &pmode,
                           DEF_LINK_LAYER_COLUMN,     &linktype,
                           COMMENT_COLUMN,            &comment,
                           HIDE_COLUMN,               &hide,
                           -1);

        /* display  the interface device from current interfaces selection */
        gtk_label_set_text(GTK_LABEL(if_dev_lb), if_name);

        /* display the interface name from current interfaces selection */
        gtk_label_set_text(GTK_LABEL(if_name_lb), desc);

#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
        /* display the buffer size from current interfaces selection */
        gtk_spin_button_set_value(GTK_SPIN_BUTTON (if_buffersize_cb), buffersize);
#endif

        /* display the snap length from current interfaces selection */
        gtk_spin_button_set_value(GTK_SPIN_BUTTON (if_snaplen_cb), snaplen);
        gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(if_snaplen_tg), hassnap);
        gtk_widget_set_sensitive(GTK_WIDGET(if_snaplen_cb), hassnap);

        if (prefs.capture_prom_mode) {
                gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(if_pmode_cb), TRUE);
        } else if (capture_dev_user_pmode_find(if_name, &pmode_pref)) {
                gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(if_pmode_cb), pmode_pref);
        } else {
                gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(if_pmode_cb), FALSE);
        }

        /* Ignore "changed" callbacks while we update the Properties widgets */
        interfaces_info_nochange = TRUE;

        /* display the link-layer header type from current interfaces selection */
        /*  -- remove old linktype list (if any) from the ComboBox */
        while (num_linktypes > 0) {
                num_linktypes--;
                gtk_combo_box_text_remove(GTK_COMBO_BOX_TEXT(if_linktype_cb), num_linktypes);
        }

        /*
         * -- set the state and sensitivity of the monitor-mode checkbox,
         * and build and add to the ComboBox a linktype list, corresponding
         * to the interface capabilities of the selected interface
         */
#ifdef HAVE_PCAP_CREATE
        caps = capture_get_if_capabilities(if_name, monitor_mode, NULL, NULL, main_window_update);
#else
        caps = capture_get_if_capabilities(if_name, FALSE, NULL, NULL, main_window_update);
#endif
        if (caps != NULL) {
#ifdef HAVE_PCAP_CREATE
                gtk_widget_set_sensitive(if_monitor_lb, caps->can_set_rfmon);
                gtk_widget_set_sensitive(if_monitor_cb, caps->can_set_rfmon);
                gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(if_monitor_cb), monitor_mode);
#endif
                if (caps->data_link_types != NULL) {
                        GList *lt_entry;
                        for (lt_entry = caps->data_link_types; lt_entry != NULL;
                            lt_entry = g_list_next(lt_entry)) {
                                data_link_info_t *dli_p = (data_link_info_t *)lt_entry->data;
                                text = (dli_p->description != NULL) ? dli_p->description : dli_p->name;
                                if (strcmp(linktype, text) == 0) {
                                        selected = num_linktypes;
                                }
                                 gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT(if_linktype_cb), text);
                                num_linktypes++;
                        }
                        gtk_widget_set_sensitive(if_linktype_lb, num_linktypes >= 2);
                        gtk_widget_set_sensitive(if_linktype_cb, num_linktypes >= 2);
                        gtk_combo_box_set_active(GTK_COMBO_BOX(if_linktype_cb), selected);
                }
                free_if_capabilities(caps);
        }
#ifdef HAVE_PCAP_CREATE
        else {
                gtk_widget_set_sensitive(if_monitor_lb, FALSE);
                gtk_widget_set_sensitive(if_monitor_cb, FALSE);
                gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(if_monitor_cb), FALSE);
        }
#endif

        /* display the interface description from current interfaces selection */
        gtk_entry_set_text(GTK_ENTRY(if_descr_te), comment);

        /* See if this is the currently selected capturing device */
        if ((prefs.capture_device != NULL) && (*prefs.capture_device != '\0')) {
                guint i;
                interface_t device;
                for (i = 0; i < global_capture_opts.all_ifaces->len; i++) {
                        device = g_array_index(global_capture_opts.all_ifaces, interface_t, i);
                        if ((strcmp(device.display_name, prefs.capture_device) == 0) &&
                                (strcmp(device.name, if_name) == 0)) {
                                /* Don't allow current interface to be hidden */
                                hide_enabled = FALSE;
                                break;
                        }
                }
        }

        /* display the "hide interface" button state from current interfaces selection */
        gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(if_hide_cb), hide);
        gtk_widget_set_sensitive(if_hide_cb, hide_enabled);
        if (hide_enabled) {
                gtk_widget_hide(if_default_if_lb);
        } else {
                gtk_widget_show(if_default_if_lb);
        }

        interfaces_info_nochange = FALSE;

        g_free(if_name);
        g_free(desc);
        g_free(linktype);
        g_free(comment);
}

#ifdef HAVE_PCAP_CREATE
/*
 * Monitor-mode toggle button changed callback; update displayed widgets
 * (the list of link-layer types might change) and list_store for currently
 * selected interface.
 */
static void
ifopts_edit_monitor_changed_cb(GtkToggleButton *tbt, gpointer udata)
{
        GtkTreeModel      *list_model;
        GtkTreeIter        list_iter;
        GtkListStore      *list_store;
        gchar             *if_name, *text;
        gboolean           monitor_mode;
        if_capabilities_t *caps;

        if (interfaces_info_nochange)
                return;

        if (if_selection == NULL) /* XXX: Cannot be NULL ?? */
                return;

        if (!gtk_tree_selection_get_selected (if_selection, &list_model, &list_iter)){
                return;
        }
        gtk_tree_model_get(list_model, &list_iter,
                           DEVICE_COLUMN,  &if_name,
                           -1);

        /* Ignore "changed" callbacks while we update the Properties widgets */
        interfaces_info_nochange = TRUE;

        /* display the link-layer header type from current interfaces selection */
        /*  -- remove old linktype list (if any) from the ComboBox */
        while (num_linktypes > 0) {
                num_linktypes--;
                gtk_combo_box_text_remove(GTK_COMBO_BOX_TEXT(if_linktype_cb), num_linktypes);
        }

        list_store = GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW (udata))); /* Get store */

#ifdef HAVE_PCAP_CREATE
        /* get "monitor mode" button state and set status in list_store for currently selected interface */
        monitor_mode = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(tbt));
        gtk_list_store_set  (list_store, &list_iter,
                             DEF_MONITOR_MODE_COLUMN, monitor_mode,
                             -1);
        caps = capture_get_if_capabilities(if_name, monitor_mode, NULL, NULL, main_window_update);
#else
        /* no monitor-mode support */
        caps = capture_get_if_capabilities(if_name, FALSE, NULL, NULL);
#endif

        /*
         * -- set the sensitivity of the monitor-mode checkbox, and
         * build and add to the ComboBox a linktype list for the current
         * interfaces selection, based on the interface capabilities
         */
        if (caps != NULL) {
#ifdef HAVE_PCAP_CREATE
                gtk_widget_set_sensitive(if_monitor_lb, caps->can_set_rfmon);
                gtk_widget_set_sensitive(if_monitor_cb, caps->can_set_rfmon);
#endif
                if (caps->data_link_types != NULL) {
                        GList *lt_entry;
                        for (lt_entry = caps->data_link_types; lt_entry != NULL;
                            lt_entry = g_list_next(lt_entry)) {
                                data_link_info_t *dli_p = (data_link_info_t *)lt_entry->data;
                                text = (dli_p->description != NULL) ? dli_p->description : dli_p->name;
                                 gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT(if_linktype_cb), text);
                                num_linktypes++;
                        }
                        gtk_widget_set_sensitive(if_linktype_lb, num_linktypes >= 2);
                        gtk_widget_set_sensitive(if_linktype_cb, num_linktypes >= 2);
                        gtk_combo_box_set_active(GTK_COMBO_BOX(if_linktype_cb), 0);
                }
                free_if_capabilities(caps);
        }
#ifdef HAVE_PCAP_CREATE
        else {
                gtk_widget_set_sensitive(if_monitor_lb, FALSE);
                gtk_widget_set_sensitive(if_monitor_cb, FALSE);
        }
#endif

        interfaces_info_nochange = FALSE;
        g_signal_emit_by_name(if_linktype_cb, "changed");

        g_free(if_name);
}
#endif

/*
 * Link-layer entry changed callback; update list_store for currently selected interface.
 */
static void
ifopts_edit_linktype_changed_cb(GtkComboBox *cb, gpointer udata)
{
        gchar        *ifnm, *text;
#ifdef HAVE_PCAP_CREATE
        gboolean      monitor_mode;
#endif
        gint          linktype;
        GtkTreeModel *list_model;
        GtkTreeIter   list_iter;
        GtkListStore *list_store;

        if (interfaces_info_nochange)
                return;

        if (if_selection == NULL)  /* XXX: Cannot be NULL ?? */
                return;

        if (!gtk_tree_selection_get_selected (if_selection, &list_model, &list_iter)){
                return;
        }

        gtk_tree_model_get(list_model, &list_iter,
                DEVICE_COLUMN,           &ifnm,
#ifdef HAVE_PCAP_CREATE
                DEF_MONITOR_MODE_COLUMN, &monitor_mode,
#endif
                -1);

        /* get current description text and set value in list_store for currently selected interface */
        text = gtk_combo_box_text_get_active_text (GTK_COMBO_BOX_TEXT(cb));
        if (text) {
#ifdef HAVE_PCAP_CREATE
                linktype = ifopts_description_to_val(ifnm, monitor_mode, text);
#else
                linktype = ifopts_description_to_val(ifnm, FALSE, text);
#endif
                list_store = GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW (udata))); /* Get store */
                gtk_list_store_set  (list_store, &list_iter,
                                     DEF_LINK_LAYER_COLUMN, text,
                                     DLT_COLUMN, linktype,
                                     -1);
                g_free(text);
        }
}

#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
/*
 * Buffer size entry changed callback; update list_store for currently selected interface.
 */
static void
ifopts_edit_buffersize_changed_cb(GtkSpinButton *sb, gpointer udata)
{
        gint          buffersize;
        GtkTreeModel *list_model;
        GtkTreeIter   list_iter;
        GtkListStore *list_store;

        if (if_selection == NULL)  /* XXX: Cannot be NULL ?? */
                return;

        if (!gtk_tree_selection_get_selected (if_selection, &list_model, &list_iter)){
                return;
        }


        /* get current description text and set value in list_store for currently selected interface */
        buffersize = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(sb));
        list_store = GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW (udata))); /* Get store */
        gtk_list_store_set  (list_store, &list_iter,
                                     BUF_COLUMN, buffersize,
                                     -1);
}
#endif

/*
 * Snap length entry changed callback; update list_store for currently selected interface.
 */
static void
ifopts_edit_snaplen_changed_cb(GtkSpinButton *sb _U_, gpointer udata _U_)
{
        gint          snaplen;
        gboolean      hassnap;
        GtkTreeModel *list_model;
        GtkTreeIter   list_iter;
        GtkListStore *list_store;

        if (if_selection == NULL)  /* XXX: Cannot be NULL ?? */
                return;

        if (!gtk_tree_selection_get_selected (if_selection, &list_model, &list_iter)){
                return;
        }


        /* get current description text and set value in list_store for currently selected interface */
        snaplen = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(sb));
        if (snaplen != WTAP_MAX_PACKET_SIZE) {
                hassnap = TRUE;
        } else {
                hassnap = FALSE;
        }
        list_store = GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW (udata)));
        gtk_list_store_set  (list_store, &list_iter,
                                     SNAPLEN_COLUMN, snaplen,
                                     HASSNAP_COLUMN, hassnap,
                                     -1);
}

/*
 * Checkbutton for the Snap length changed callback; update list_store for currently selected interface.
 */
static void
ifopts_edit_hassnap_changed_cb(GtkToggleButton *tbt, gpointer udata)
{
        gboolean      hassnap;
        GtkTreeModel *list_model;
        GtkTreeIter   list_iter;
        GtkListStore *list_store;

        if (if_selection == NULL)  /* XXX: Cannot be NULL ?? */
                return;

        if (!gtk_tree_selection_get_selected (if_selection, &list_model, &list_iter)){
                return;
        }
        hassnap = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(tbt));

        list_store = GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW (udata)));
        gtk_list_store_set  (list_store, &list_iter,
                                     HASSNAP_COLUMN, hassnap,
                                     -1);
        gtk_widget_set_sensitive(GTK_WIDGET(if_snaplen_cb), hassnap);
}

/*
 * Checkbutton for the promiscuous mode changed callback; update list_store for currently selected interface.
 */
static void
ifopts_edit_pmode_changed_cb(GtkToggleButton *tbt, gpointer udata)
{
        gboolean      pmode;
        GtkTreeModel *list_model;
        GtkTreeIter   list_iter;
        GtkListStore *list_store;

        if (if_selection == NULL)  /* XXX: Cannot be NULL ?? */
                return;

        if (!gtk_tree_selection_get_selected (if_selection, &list_model, &list_iter)){
                return;
        }
        pmode = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(tbt));

        list_store = GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW (udata)));
        gtk_list_store_set  (list_store, &list_iter,
                                     PMODE_COLUMN, pmode,
                                     -1);
}


/*
 * Comment text entry changed callback; update list_store for currently selected interface.
 */
static void
ifopts_edit_descr_changed_cb(GtkEditable *ed, gpointer udata)
{
        gchar        *text;
        GtkTreeModel *list_model;
        GtkTreeIter   list_iter;
        GtkListStore *list_store;

        if (interfaces_info_nochange)
                return;

        if (if_selection == NULL) /* XXX: Cannot be NULL ?? */
                return;

        if (!gtk_tree_selection_get_selected (if_selection, &list_model, &list_iter)){
                return;
        }

        /* get current description text and set value in list_store for currently selected interface */
        text = gtk_editable_get_chars(GTK_EDITABLE(ed), 0, -1);
        /* replace any reserved formatting characters "()," with spaces */
        g_strdelimit(text, "(),", ' ');

        list_store = GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW (udata))); /* Get store */
        gtk_list_store_set  (list_store, &list_iter,
                             COMMENT_COLUMN, text,
                             -1);

        g_free(text);
}

/*
 * Hide toggle button changed callback; update list_store for currently selected interface .
 */
static void
ifopts_edit_hide_changed_cb(GtkToggleButton *tbt, gpointer udata)
{
        GtkTreeModel *list_model;
        GtkTreeIter   list_iter;
        GtkListStore *list_store;

        if (interfaces_info_nochange)
                return;

        if (if_selection == NULL) /* XXX: Cannot be NULL ?? */
                return;

        if (!gtk_tree_selection_get_selected (if_selection, &list_model, &list_iter)){
                return;
        }

        list_store = GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW (udata))); /* Get store */
        /* get "hide" button state and set status in list_store for currently selected interface */
        if (gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(tbt)) == TRUE)
                gtk_list_store_set  (list_store, &list_iter,
                                     HIDE_COLUMN, TRUE,
                                     -1);
        else
                gtk_list_store_set  (list_store, &list_iter,
                                     HIDE_COLUMN, FALSE,
                                     -1);
}

/*
 * Add any saved interface options that apply to interfaces ListStore.
 *
 * NOTE:
 *              Interfaces that have been removed from the machine or disabled and
 *              no longer apply are ignored. Therefore, if the user subsequently
 *              selects "OK", the options for these interfaces are lost (they're
 *              lost permanently if "Save" is selected).
 */
static void
ifopts_options_add(GtkListStore *list_store, if_info_t *if_info)
{
        gchar   *p;
        gchar   *ifnm;
        gchar   *desc;
        gchar   *pr_descr;
        gchar   *text[] = { NULL, NULL, NULL, NULL };
        if_capabilities_t *caps;
#ifdef HAVE_PCAP_CREATE
        gboolean monitor_mode;
#endif
        gint     linktype;
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
        gint buffersize;
#endif
        gint snaplen;
        gboolean hide, hassnap = TRUE, pmode;
        GtkTreeIter  iter;

        /* set device name text */
        text[0] = g_strdup(if_info->name);

        /* set vendor description */
        if (if_info->vendor_description != NULL)
                text[1] = g_strdup(if_info->vendor_description);
        else
                text[1] = g_strdup("");

#ifdef HAVE_PCAP_CREATE
        /* get default monitor mode setting */
        monitor_mode = prefs_capture_device_monitor_mode(if_info->name);
        caps = capture_get_if_capabilities(if_info->name, monitor_mode, NULL, NULL, main_window_update);
#else
        /* no monitor-mode support */
        caps = capture_get_if_capabilities(if_info->name, FALSE, NULL, NULL, main_window_update);
#endif

        /* set default link-layer header type */
        linktype = capture_dev_user_linktype_find(if_info->name);
        if (caps != NULL) {
                if (caps->data_link_types != NULL) {
                        GList  *lt_entry;
                        for (lt_entry = caps->data_link_types; lt_entry != NULL;
                            lt_entry = g_list_next(lt_entry)) {
                                data_link_info_t *dli_p = (data_link_info_t *)lt_entry->data;
                                /* If we have no previous link-layer header type we use the first one */
                                if (linktype == -1 || linktype == dli_p->dlt) {
                                        if (dli_p->description) {
                                                text[2] = g_strdup(dli_p->description);
                                        } else {
                                                text[2] = g_strdup(dli_p->name);
                                        }
                                        break;
                                }
                        }
                }
                free_if_capabilities(caps);
        }

#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
        buffersize = capture_dev_user_buffersize_find(if_info->name);
        if (buffersize == -1) {
                buffersize = DEFAULT_CAPTURE_BUFFER_SIZE;
        }
#endif

        if (!capture_dev_user_snaplen_find(if_info->name, &hassnap, &snaplen)) {
                snaplen = WTAP_MAX_PACKET_SIZE;
                hassnap = FALSE;
        }

        if (prefs.capture_prom_mode) {
                pmode = TRUE;
        } else {
                if (!capture_dev_user_pmode_find(if_info->name, &pmode)) {
                        pmode = FALSE;
                }
        }

        /* if we have no link-layer */
        if (text[2] == NULL)
                text[2] = g_strdup("");

        /* add interface descriptions */
        if ((prefs.capture_devices_descr != NULL) &&
            (*prefs.capture_devices_descr != '\0')) {
                /* create working copy of device descriptions */
                pr_descr = g_strdup(prefs.capture_devices_descr);

                /* if we find a description for this interface */
                if ((ifnm = strstr(pr_descr, if_info->name)) != NULL) {
                        p = ifnm;
                        while (*p != '\0') {
                                /* found left parenthesis, start of description */
                                if (*p == '(') {
                                        p++;
                                        /* if syntax error */
                                        if ((*p == '\0') || (*p == ',') || (*p == '(') || (*p == ')'))
                                                break;

                                        /* save pointer to beginning of description */
                                        desc = p;
                                        p++;
                                        /* skip to end of description */
                                        while (*p != '\0') {
                                                /* if syntax error */
                                                if ((*p == ',') || (*p == '('))
                                                        break;

                                                /* end of description */
                                                else if (*p == ')') {
                                                        /* terminate and set description text */
                                                        *p = '\0';
                                                        text[3] = g_strdup(desc);
                                                        break;
                                                }
                                                p++;
                                        }
                                        /* get out */
                                        break;
                                } else
                                        p++;
                        }
                }

                g_free(pr_descr);
        }

        /* if we have no description */
        if (text[3] == NULL)
                text[3] = g_strdup("");

        /* check if interface is "hidden" */
        hide = prefs_is_capture_device_hidden(if_info->name);

        /* add row to ListStore */

        gtk_list_store_insert_with_values( list_store , &iter, G_MAXINT,
                             DEVICE_COLUMN,           text[0],
                             DESC_COLUMN,             text[1],
#ifdef HAVE_PCAP_CREATE
                             DEF_MONITOR_MODE_COLUMN, monitor_mode,
#endif
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
                             BUF_COLUMN,              buffersize,
#endif
                             HASSNAP_COLUMN,          hassnap,
                             SNAPLEN_COLUMN,          snaplen,
                             PMODE_COLUMN,            pmode,
                             DEF_LINK_LAYER_COLUMN,   text[2],
                             COMMENT_COLUMN,          text[3],
                             HIDE_COLUMN,             hide,
                             DLT_COLUMN,              linktype,
                             -1);

        ifopts_options_free(text);
}

static void
ifopts_options_free(gchar *text[])
{
        gint i;

        for (i=0; i < IFOPTS_LIST_TEXT_COLS; i++) {
                if (text[i] != NULL) {
                        g_free(text[i]);
                        text[i] = NULL;
                }
        }
}

/*
 * Add all interfaces to interfaces ListStore.
 */
static void
ifopts_if_liststore_add(void)
{
        GList   *if_list, *ifl_p;
        int      err;
        gchar   *err_str;

        if_list = capture_interface_list(&err, &err_str, main_window_update);  /* if_list = ptr to first element of list (or NULL) */
        if (if_list == NULL) {
                if (err != 0) {
                        simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, "%s", err_str);
                }
                g_free(err_str);
                return;
        }

        /* We have an interface list.                            */
        /* add OS description + interface name text to ListStore */
        for (ifl_p = if_list; ifl_p != NULL; ifl_p = g_list_next(ifl_p)) {
                /* should never happen, but just in case */
                if ((ifl_p->data) == NULL)
                        continue;
                /* fill current options ListStore with current preference values */
                ifopts_options_add(GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW (cur_list))),
                                   (if_info_t *)ifl_p->data);
        }
        free_interface_list(if_list);
}

#ifdef HAVE_PCAP_CREATE
/*
 * Create/write new "monitor mode" interfaces string based on current CList.
 * Put it into the preferences value.
 */
static void
ifopts_write_new_monitor_mode(void)
{
        GtkListStore    *store;
        GtkTreeIter      iter;
        GtkTreeModel    *model;
        gboolean         more_items = TRUE;
        gint             first_if = TRUE;       /* flag to check if first in list */
        gchar           *ifnm;
        gboolean         monitor_mode;
        gchar           *new_monitor_mode;

        /* new preferences "monitor mode" interfaces string */
        new_monitor_mode = (gchar*)g_malloc0(MAX_VAL_LEN);

        /* get "monitor mode" flag text for each row (interface) */
        model = gtk_tree_view_get_model(GTK_TREE_VIEW(cur_list));
        store = GTK_LIST_STORE(model);
        if( gtk_tree_model_get_iter_first(GTK_TREE_MODEL(store), &iter) ) {
                while (more_items) {
                        gtk_tree_model_get(GTK_TREE_MODEL(store), &iter,
                                           DEVICE_COLUMN,           &ifnm,
                                           DEF_MONITOR_MODE_COLUMN, &monitor_mode,
                                           -1);

                        /* if flag text is "No", skip this interface */
                        if (!monitor_mode){
                                more_items = gtk_tree_model_iter_next (model,&iter);
                                continue;
                        }

                        /*
                         * create/cat interface to new string
                         */
                        if (first_if != TRUE)
                                g_strlcat (new_monitor_mode, ",", MAX_VAL_LEN);
                        g_strlcat (new_monitor_mode, ifnm, MAX_VAL_LEN);

                        /* set first-in-list flag to false */
                        first_if = FALSE;
                        more_items = gtk_tree_model_iter_next (model,&iter);
                }

                /* write new "hidden" string to preferences */
                g_free(prefs.capture_devices_monitor_mode);
                prefs.capture_devices_monitor_mode = new_monitor_mode;
        }
}
#endif

/*
 * Create/write new interfaces link-layer string based on current CList.
 * Put it into the preferences value.
 */
static void
ifopts_write_new_linklayer(void)
{
        GtkListStore    *store;
        GtkTreeIter      iter;
        GtkTreeModel    *model;

        gboolean         more_items = TRUE, first_if = TRUE;  /* flag to check if first in list */
        gchar           *ifnm;
        gint             linktype;
        gchar           *tmp_linklayer;
        gchar           *new_linklayer;

        /* new preferences interfaces link-layer string */
        new_linklayer = (gchar *)g_malloc0(MAX_VAL_LEN);

        /* get link-layer for each row (interface) */
        model = gtk_tree_view_get_model(GTK_TREE_VIEW(cur_list));
        store = GTK_LIST_STORE(model);
        if( gtk_tree_model_get_iter_first(GTK_TREE_MODEL(store), &iter) ) {

                while (more_items) {
                        gtk_tree_model_get(GTK_TREE_MODEL(store), &iter,
                                           DEVICE_COLUMN, &ifnm,
                                           DLT_COLUMN,    &linktype,
                                           -1);

                        if (linktype == -1){
                                more_items = gtk_tree_model_iter_next (model,&iter);
                                continue;
                        }

                        if (first_if != TRUE) {
                                g_strlcat (new_linklayer, ",", MAX_VAL_LEN);
                        }
                        /*
                         * create/cat interface link-layer to new string
                         * (leave space for parens, comma and terminator)
                         */
                        tmp_linklayer = g_strdup_printf("%s(%d)", ifnm, linktype);
                        g_strlcat(new_linklayer, tmp_linklayer, MAX_VAL_LEN);
                        g_free(tmp_linklayer);
                        g_free(ifnm);
                        /* set first-in-list flag to false */
                        first_if = FALSE;
                        more_items = gtk_tree_model_iter_next (model,&iter);
                }

                /* write new link-layer string to preferences */
                g_free(prefs.capture_devices_linktypes);
                prefs.capture_devices_linktypes = new_linklayer;
        }
}

#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
/*
 * Create/write new interfaces buffer size string based on current CList.
 * Put it into the preferences value.
 */
static void
ifopts_write_new_buffersize(void)
{
        GtkListStore    *store;
        GtkTreeIter      iter;
        GtkTreeModel    *model;

        gboolean         more_items = TRUE, first_if = TRUE;  /* flag to check if first in list */
        gchar           *ifnm;
        gint             buffersize;
        gchar           *tmp_buffersize;
        gchar           *new_buffersize;

        /* new preferences interfaces buffer size string */
        new_buffersize = (gchar *)g_malloc0(MAX_VAL_LEN);

        /* get buffer size for each row (interface) */
        model = gtk_tree_view_get_model(GTK_TREE_VIEW(cur_list));
        store = GTK_LIST_STORE(model);
        if( gtk_tree_model_get_iter_first(GTK_TREE_MODEL(store), &iter) ) {

                while (more_items) {
                        gtk_tree_model_get(GTK_TREE_MODEL(store), &iter,
                                           DEVICE_COLUMN, &ifnm,
                                           BUF_COLUMN,    &buffersize,
                                           -1);
                        if (buffersize == -1){
                                more_items = gtk_tree_model_iter_next (model,&iter);
                                continue;
                        }

                        if (first_if != TRUE) {
                                g_strlcat (new_buffersize, ",", MAX_VAL_LEN);
                        }
                        /*
                         * create/cat interface buffersize to new string
                         * (leave space for parens, comma and terminator)
                         */
                        tmp_buffersize = g_strdup_printf("%s(%d)", ifnm, buffersize);
                        g_strlcat(new_buffersize, tmp_buffersize, MAX_VAL_LEN);
                        g_free(tmp_buffersize);
                        g_free(ifnm);
                        /* set first-in-list flag to false */
                        first_if = FALSE;
                        more_items = gtk_tree_model_iter_next (model,&iter);
                }

                /* write new buffersize string to preferences */
                g_free(prefs.capture_devices_buffersize);
                prefs.capture_devices_buffersize = new_buffersize;
        }
}
#endif

/*
 * Create/write new interfaces snap length string based on current CList.
 * Put it into the preferences value.
 */
static void
ifopts_write_new_snaplen(void)
{
        GtkListStore    *store;
        GtkTreeIter      iter;
        GtkTreeModel    *model;

        gboolean         more_items = TRUE, first_if = TRUE;  /* flag to check if first in list */
        gchar           *ifnm;
        gint             snaplen;
        gboolean hassnap;
        gchar           *tmp_snaplen;
        gchar           *new_snaplen;

        /* new preferences interfaces snap length string */
        new_snaplen = (gchar *)g_malloc0(MAX_VAL_LEN);

        /* get snap length for each row (interface) */
        model = gtk_tree_view_get_model(GTK_TREE_VIEW(cur_list));
        store = GTK_LIST_STORE(model);
        if( gtk_tree_model_get_iter_first(GTK_TREE_MODEL(store), &iter) ) {

                while (more_items) {
                        gtk_tree_model_get(GTK_TREE_MODEL(store), &iter,
                                           DEVICE_COLUMN, &ifnm,
                                           SNAPLEN_COLUMN,    &snaplen,
                                           HASSNAP_COLUMN,    &hassnap,
                                           -1);
                        if (snaplen == -1){
                                more_items = gtk_tree_model_iter_next (model,&iter);
                                continue;
                        }
                        if (first_if != TRUE) {
                                g_strlcat (new_snaplen, ",", MAX_VAL_LEN);
                        }
                        /*
                         * create/cat interface snap length to new string
                         * (leave space for parens, comma and terminator)
                         */
                        tmp_snaplen = g_strdup_printf("%s:%d(%d)", ifnm, hassnap, (hassnap?snaplen:WTAP_MAX_PACKET_SIZE));
                        g_strlcat(new_snaplen, tmp_snaplen, MAX_VAL_LEN);
                        g_free(tmp_snaplen);
                        g_free(ifnm);
                        /* set first-in-list flag to false */
                        first_if = FALSE;
                        more_items = gtk_tree_model_iter_next (model,&iter);
                }

                /* write new snap length string to preferences */
                g_free(prefs.capture_devices_snaplen);
                prefs.capture_devices_snaplen = new_snaplen;
        }
}

/*
 * Create/write new promiscuous mode string based on current CList.
 * Put it into the preferences value.
 */
static void
ifopts_write_new_pmode(void)
{
        GtkListStore    *store;
        GtkTreeIter      iter;
        GtkTreeModel    *model;
        GtkWidget *promisc_cb;

        gboolean         more_items = TRUE, first_if = TRUE;  /* flag to check if first in list */
        gchar           *ifnm;
        gboolean        pmode, off = FALSE;
        gchar           *tmp_pmode;
        gchar           *new_pmode;

        /* new preferences interfaces promiscuous mode string */
        new_pmode = (gchar *)g_malloc0(MAX_VAL_LEN);

        /* get promiscuous mode for each row (interface) */
        model = gtk_tree_view_get_model(GTK_TREE_VIEW(cur_list));
        store = GTK_LIST_STORE(model);
        if( gtk_tree_model_get_iter_first(GTK_TREE_MODEL(store), &iter) ) {

                while (more_items) {
                        gtk_tree_model_get(GTK_TREE_MODEL(store), &iter,
                                           DEVICE_COLUMN, &ifnm,
                                           PMODE_COLUMN,    &pmode,
                                           -1);
                        if (pmode == -1){
                                more_items = gtk_tree_model_iter_next (model,&iter);
                                continue;
                        }

                        if (first_if != TRUE) {
                                g_strlcat (new_pmode, ",", MAX_VAL_LEN);
                        }
                        /*
                         * create/cat interface promiscuous mode to new string
                         * (leave space for parens, comma and terminator)
                         */
                        if (!pmode) {
                                off = TRUE;
                        }
                        tmp_pmode = g_strdup_printf("%s(%d)", ifnm, pmode);
                        g_strlcat(new_pmode, tmp_pmode, MAX_VAL_LEN);
                        g_free(tmp_pmode);
                        g_free(ifnm);
                        /* set first-in-list flag to false */
                        first_if = FALSE;
                        more_items = gtk_tree_model_iter_next (model,&iter);
                }

                /* write new promiscuous mode string to preferences */
                g_free(prefs.capture_devices_pmode);
                prefs.capture_devices_pmode = new_pmode;
                if (off) {
                        prefs.capture_prom_mode = FALSE;
                } else {
                        prefs.capture_prom_mode = TRUE;
                }
                promisc_cb = (GtkWidget *)g_object_get_data(G_OBJECT(capture_window), PROM_MODE_KEY);
                gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(promisc_cb), prefs.capture_prom_mode);
        }
}

/*
 * Create/write new interfaces description string based on current CList.
 * Put it into the preferences value.
 */
static void
ifopts_write_new_descr(void)
{
        GtkListStore    *store;
        GtkTreeIter      iter;
        GtkTreeModel    *model;
        gboolean         more_items = TRUE;
        gboolean         first_if = TRUE;       /* flag to check if first in list */
        gchar           *ifnm;
        gchar           *desc;
        gchar           *tmp_descr;
        gchar           *new_descr;

        /* new preferences interfaces description string */
        new_descr = (gchar *)g_malloc0(MAX_VAL_LEN);

        /* get description for each row (interface) */
        model = gtk_tree_view_get_model(GTK_TREE_VIEW(cur_list));
        store = GTK_LIST_STORE(model);
        if( gtk_tree_model_get_iter_first(GTK_TREE_MODEL(store), &iter) ) {
                while (more_items) {
                        gtk_tree_model_get(GTK_TREE_MODEL(store), &iter,
                                DEVICE_COLUMN, &ifnm,
                                COMMENT_COLUMN, &desc,
                                -1);

                        /* if no description, skip this interface */
                        if (strlen(desc) == 0){
                                more_items = gtk_tree_model_iter_next (model,&iter);
                                continue;
                        }
                        /*
                         * create/cat interface description to new string
                         * (leave space for parens, comma and terminator)
                         */
                        if (first_if != TRUE) {
                                g_strlcat (new_descr, ",", MAX_VAL_LEN);
                        }

                        tmp_descr = g_strdup_printf("%s(%s)", ifnm, desc);
                        g_strlcat(new_descr, tmp_descr, MAX_VAL_LEN);
                        g_free(tmp_descr);

                        /* set first-in-list flag to false */
                        first_if = FALSE;
                        more_items = gtk_tree_model_iter_next (model,&iter);
                }

                /* write new description string to preferences */
                g_free(prefs.capture_devices_descr);
                prefs.capture_devices_descr = new_descr;
        }
}

/*
 * Create/write new "hidden" interfaces string based on current CList.
 * Put it into the preferences value.
 */
static void
ifopts_write_new_hide(void)
{
        GtkListStore    *store;
        GtkTreeIter      iter;
        GtkTreeModel    *model;
        gboolean         more_items = TRUE;
        gint             first_if = TRUE;       /* flag to check if first in list */
        gchar           *ifnm;
        gboolean         hide;
        gchar           *new_hide;

        /* get "hide" flag text for each row (interface) */
        model = gtk_tree_view_get_model(GTK_TREE_VIEW(cur_list));
        store = GTK_LIST_STORE(model);
        if( gtk_tree_model_get_iter_first(GTK_TREE_MODEL(store), &iter) ) {
                /* new preferences "hidden" interfaces string */
                new_hide = (gchar *)g_malloc0(MAX_VAL_LEN);
                while (more_items) {
                        gtk_tree_model_get(GTK_TREE_MODEL(store), &iter,
                                           DEVICE_COLUMN, &ifnm,
                                           HIDE_COLUMN,   &hide,
                                           -1);

                        /* if flag text is "No", skip this interface */
                        if (!hide){
                                more_items = gtk_tree_model_iter_next (model,&iter);
                                continue;
                        }

                        /*
                         * create/cat interface to new string
                         */
                        if (first_if != TRUE)
                                g_strlcat (new_hide, ",", MAX_VAL_LEN);
                        g_strlcat (new_hide, ifnm, MAX_VAL_LEN);

                        /* set first-in-list flag to false */
                        first_if = FALSE;
                        more_items = gtk_tree_model_iter_next (model,&iter);
                }

                /* write new "hidden" string to preferences */
                g_free(prefs.capture_devices_hide);
                prefs.capture_devices_hide = new_hide;
                hide_interface(g_strdup(new_hide));
        }
}

static void
prom_mode_cb(GtkToggleButton *tbt, gpointer udata _U_) {
        prefs.capture_prom_mode = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(tbt));
}

#endif /* HAVE_LIBPCAP */

/*
 * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
 *
 * Local variables:
 * c-basic-offset: 8
 * tab-width: 8
 * indent-tabs-mode: t
 * End:
 *
 * vi: set shiftwidth=8 tabstop=8 noexpandtab:
 * :indentSize=8:tabSize=8:noTabs=false:
 */