forked from osmocom/wireshark
531 lines
19 KiB
C
531 lines
19 KiB
C
/* capture_dlg.c
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* Routines for packet capture windows
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*
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* $Id: capture_dlg.c,v 1.37 2001/01/28 23:56:29 guy Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@zing.org>
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* Copyright 1998 Gerald Combs
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*
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_LIBPCAP
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <gtk/gtk.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <time.h>
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#include <pcap.h>
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#ifdef NEED_SNPRINTF_H
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# include "snprintf.h"
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#endif
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#include "capture.h"
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#include "globals.h"
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#include "resolv.h"
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#include "main.h"
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#include "ui_util.h"
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#include "capture_dlg.h"
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#include "filter_prefs.h"
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#include "simple_dialog.h"
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#include "dlg_utils.h"
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#include "util.h"
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/* Capture callback data keys */
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#define E_CAP_IFACE_KEY "cap_iface"
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#define E_CAP_FILT_KEY "cap_filter_te"
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#define E_CAP_FILE_TE_KEY "cap_file_te"
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#define E_CAP_COUNT_KEY "cap_count"
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#define E_CAP_SNAP_KEY "cap_snap"
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#define E_CAP_PROMISC_KEY "cap_promisc"
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#define E_CAP_SYNC_KEY "cap_sync"
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#define E_CAP_AUTO_SCROLL_KEY "cap_auto_scroll"
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#define E_CAP_RESOLVE_KEY "cap_resolve"
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#define E_FS_CALLER_PTR_KEY "fs_caller_ptr"
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#define E_FILE_SEL_DIALOG_PTR_KEY "file_sel_dialog_ptr"
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static void
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capture_prep_file_cb(GtkWidget *w, gpointer te);
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static void
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cap_prep_fs_ok_cb(GtkWidget *w, gpointer data);
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static void
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cap_prep_fs_cancel_cb(GtkWidget *w, gpointer data);
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static void
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cap_prep_fs_destroy_cb(GtkWidget *win, gpointer data);
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static void
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capture_prep_ok_cb(GtkWidget *ok_bt, gpointer parent_w);
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static void
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capture_prep_close_cb(GtkWidget *close_bt, gpointer parent_w);
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static void
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capture_prep_destroy_cb(GtkWidget *win, gpointer user_data);
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void
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capture_stop_cb(GtkWidget *w, gpointer d)
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{
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capture_stop();
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}
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/*
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* Keep a static pointer to the current "Capture Preferences" window, if
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* any, so that if somebody tries to do "Capture:Start" while there's
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* already a "Capture Preferences" window up, we just pop up the existing
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* one, rather than creating a new one.
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*/
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static GtkWidget *cap_open_w;
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void
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capture_prep_cb(GtkWidget *w, gpointer d)
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{
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GtkWidget *if_cb, *if_lb,
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*count_lb, *count_cb, *main_vb,
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*filter_bt, *filter_te,
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*file_bt, *file_te,
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*caplen_hb, *table,
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*bbox, *ok_bt, *cancel_bt, *snap_lb,
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*snap_sb, *promisc_cb, *sync_cb, *auto_scroll_cb, *resolv_cb;
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GtkAccelGroup *accel_group;
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GtkAdjustment *adj;
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GList *if_list, *count_list = NULL;
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gchar *count_item1 = "0 (Infinite)", count_item2[16];
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int err;
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char err_str[PCAP_ERRBUF_SIZE];
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if (cap_open_w != NULL) {
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/* There's already a "Capture Preferences" dialog box; reactivate it. */
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reactivate_window(cap_open_w);
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return;
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}
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if_list = get_interface_list(&err, err_str);
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if (if_list == NULL && err == CANT_GET_INTERFACE_LIST) {
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simple_dialog(ESD_TYPE_WARN, NULL, "Can't get list of interfaces: %s",
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err_str);
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}
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cap_open_w = dlg_window_new("Ethereal: Capture Preferences");
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gtk_signal_connect(GTK_OBJECT(cap_open_w), "destroy",
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GTK_SIGNAL_FUNC(capture_prep_destroy_cb), NULL);
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/* Accelerator group for the accelerators (or, as they're called in
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Windows and, I think, in Motif, "mnemonics"; Alt+<key> is a mnemonic,
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Ctrl+<key> is an accelerator). */
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accel_group = gtk_accel_group_new();
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gtk_window_add_accel_group(GTK_WINDOW(cap_open_w), accel_group);
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main_vb = gtk_vbox_new(FALSE, 3);
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gtk_container_border_width(GTK_CONTAINER(main_vb), 5);
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gtk_container_add(GTK_CONTAINER(cap_open_w), main_vb);
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gtk_widget_show(main_vb);
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/* Table : container of the first 4 rows */
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table = gtk_table_new (4, 2, FALSE);
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gtk_table_set_row_spacings(GTK_TABLE (table), 5);
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gtk_table_set_col_spacings(GTK_TABLE (table), 5);
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gtk_container_add(GTK_CONTAINER(main_vb), table);
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gtk_widget_show(table);
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/* Interface row */
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if_lb = gtk_label_new("Interface:");
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gtk_table_attach_defaults(GTK_TABLE(table), if_lb, 0, 1, 0, 1);
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gtk_widget_show(if_lb);
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if_cb = gtk_combo_new();
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if (if_list != NULL)
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gtk_combo_set_popdown_strings(GTK_COMBO(if_cb), if_list);
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if (cfile.iface)
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gtk_entry_set_text(GTK_ENTRY(GTK_COMBO(if_cb)->entry), cfile.iface);
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else if (if_list)
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gtk_entry_set_text(GTK_ENTRY(GTK_COMBO(if_cb)->entry), if_list->data);
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gtk_table_attach_defaults(GTK_TABLE(table), if_cb, 1, 2, 0, 1);
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gtk_widget_show(if_cb);
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free_interface_list(if_list);
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/* Count row */
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count_lb = gtk_label_new("Count:");
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gtk_table_attach_defaults(GTK_TABLE(table), count_lb, 0, 1, 1, 2);
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gtk_widget_show(count_lb);
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count_list = g_list_append(count_list, count_item1);
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if (cfile.count) {
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snprintf(count_item2, 15, "%d", cfile.count);
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count_list = g_list_append(count_list, count_item2);
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}
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count_cb = gtk_combo_new();
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gtk_combo_set_popdown_strings(GTK_COMBO(count_cb), count_list);
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gtk_table_attach_defaults(GTK_TABLE(table), count_cb, 1, 2, 1, 2);
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gtk_widget_show(count_cb);
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while (count_list)
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count_list = g_list_remove_link(count_list, count_list);
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/* Filter row */
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filter_bt = gtk_button_new_with_label("Filter:");
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gtk_signal_connect(GTK_OBJECT(filter_bt), "clicked",
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GTK_SIGNAL_FUNC(capture_filter_construct_cb), NULL);
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gtk_table_attach_defaults(GTK_TABLE(table), filter_bt, 0, 1, 2, 3);
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gtk_widget_show(filter_bt);
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filter_te = gtk_entry_new();
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if (cfile.cfilter) gtk_entry_set_text(GTK_ENTRY(filter_te), cfile.cfilter);
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gtk_object_set_data(GTK_OBJECT(filter_bt), E_FILT_TE_PTR_KEY, filter_te);
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gtk_table_attach_defaults(GTK_TABLE(table), filter_te, 1, 2, 2, 3);
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gtk_widget_show(filter_te);
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/* File row */
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file_bt = gtk_button_new_with_label("File:");
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gtk_table_attach_defaults(GTK_TABLE(table), file_bt, 0, 1, 3, 4);
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gtk_widget_show(file_bt);
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file_te = gtk_entry_new();
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gtk_table_attach_defaults(GTK_TABLE(table), file_te, 1, 2, 3, 4);
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gtk_widget_show(file_te);
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gtk_signal_connect(GTK_OBJECT(file_bt), "clicked",
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GTK_SIGNAL_FUNC(capture_prep_file_cb), GTK_OBJECT(file_te));
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/* Misc row: Capture file checkbox and snap spinbutton */
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caplen_hb = gtk_hbox_new(FALSE, 3);
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gtk_container_add(GTK_CONTAINER(main_vb), caplen_hb);
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gtk_widget_show(caplen_hb);
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snap_lb = gtk_label_new("Capture length");
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gtk_misc_set_alignment(GTK_MISC(snap_lb), 0, 0.5);
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gtk_box_pack_start(GTK_BOX(caplen_hb), snap_lb, FALSE, FALSE, 6);
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gtk_widget_show(snap_lb);
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adj = (GtkAdjustment *) gtk_adjustment_new((float) cfile.snap,
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MIN_PACKET_SIZE, WTAP_MAX_PACKET_SIZE, 1.0, 10.0, 0.0);
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snap_sb = gtk_spin_button_new (adj, 0, 0);
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gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (snap_sb), TRUE);
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gtk_widget_set_usize (snap_sb, 80, 0);
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gtk_box_pack_start (GTK_BOX(caplen_hb), snap_sb, FALSE, FALSE, 3);
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gtk_widget_show(snap_sb);
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promisc_cb = dlg_check_button_new_with_label_with_mnemonic(
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"Capture packets in _promiscuous mode", accel_group);
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gtk_toggle_button_set_state(GTK_TOGGLE_BUTTON(promisc_cb), promisc_mode);
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gtk_container_add(GTK_CONTAINER(main_vb), promisc_cb);
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gtk_widget_show(promisc_cb);
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sync_cb = dlg_check_button_new_with_label_with_mnemonic(
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"_Update list of packets in real time", accel_group);
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gtk_toggle_button_set_state(GTK_TOGGLE_BUTTON(sync_cb), sync_mode);
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gtk_container_add(GTK_CONTAINER(main_vb), sync_cb);
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gtk_widget_show(sync_cb);
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auto_scroll_cb = dlg_check_button_new_with_label_with_mnemonic(
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"_Automatic scrolling in live capture", accel_group);
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gtk_toggle_button_set_state(GTK_TOGGLE_BUTTON(auto_scroll_cb), auto_scroll_live);
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gtk_container_add(GTK_CONTAINER(main_vb), auto_scroll_cb);
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gtk_widget_show(auto_scroll_cb);
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resolv_cb = dlg_check_button_new_with_label_with_mnemonic(
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"Enable _name resolution", accel_group);
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gtk_toggle_button_set_state(GTK_TOGGLE_BUTTON(resolv_cb), g_resolving_actif);
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gtk_container_add(GTK_CONTAINER(main_vb), resolv_cb);
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gtk_widget_show(resolv_cb);
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/* Button row: OK and cancel buttons */
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bbox = gtk_hbutton_box_new();
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gtk_button_box_set_layout (GTK_BUTTON_BOX (bbox), GTK_BUTTONBOX_END);
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gtk_button_box_set_spacing(GTK_BUTTON_BOX(bbox), 5);
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gtk_container_add(GTK_CONTAINER(main_vb), bbox);
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gtk_widget_show(bbox);
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ok_bt = gtk_button_new_with_label ("OK");
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gtk_signal_connect(GTK_OBJECT(ok_bt), "clicked",
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GTK_SIGNAL_FUNC(capture_prep_ok_cb), GTK_OBJECT(cap_open_w));
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GTK_WIDGET_SET_FLAGS(ok_bt, GTK_CAN_DEFAULT);
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gtk_box_pack_start (GTK_BOX (bbox), ok_bt, TRUE, TRUE, 0);
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gtk_widget_grab_default(ok_bt);
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gtk_widget_show(ok_bt);
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cancel_bt = gtk_button_new_with_label ("Cancel");
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gtk_signal_connect(GTK_OBJECT(cancel_bt), "clicked",
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GTK_SIGNAL_FUNC(capture_prep_close_cb), GTK_OBJECT(cap_open_w));
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GTK_WIDGET_SET_FLAGS(cancel_bt, GTK_CAN_DEFAULT);
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gtk_box_pack_start (GTK_BOX (bbox), cancel_bt, TRUE, TRUE, 0);
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gtk_widget_show(cancel_bt);
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/* Attach pointers to needed widgets to the capture prefs window/object */
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gtk_object_set_data(GTK_OBJECT(cap_open_w), E_CAP_IFACE_KEY, if_cb);
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gtk_object_set_data(GTK_OBJECT(cap_open_w), E_CAP_FILT_KEY, filter_te);
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gtk_object_set_data(GTK_OBJECT(cap_open_w), E_CAP_FILE_TE_KEY, file_te);
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gtk_object_set_data(GTK_OBJECT(cap_open_w), E_CAP_COUNT_KEY, count_cb);
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gtk_object_set_data(GTK_OBJECT(cap_open_w), E_CAP_SNAP_KEY, snap_sb);
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gtk_object_set_data(GTK_OBJECT(cap_open_w), E_CAP_PROMISC_KEY, promisc_cb);
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gtk_object_set_data(GTK_OBJECT(cap_open_w), E_CAP_SYNC_KEY, sync_cb);
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gtk_object_set_data(GTK_OBJECT(cap_open_w), E_CAP_AUTO_SCROLL_KEY, auto_scroll_cb);
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gtk_object_set_data(GTK_OBJECT(cap_open_w), E_CAP_RESOLVE_KEY, resolv_cb);
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/* Catch the "activate" signal on the frame number and file name text
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entries, so that if the user types Return there, we act as if the
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"OK" button had been selected, as happens if Return is typed if some
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widget that *doesn't* handle the Return key has the input focus. */
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dlg_set_activate(filter_te, ok_bt);
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dlg_set_activate(file_te, ok_bt);
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/* Catch the "key_press_event" signal in the window, so that we can catch
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the ESC key being pressed and act as if the "Cancel" button had
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been selected. */
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dlg_set_cancel(cap_open_w, cancel_bt);
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/* XXX - why does not
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gtk_widget_grab_focus(if_cb);
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give the initial focus to the "Interface" combo box?
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Or should I phrase that as "why does GTK+ continually frustrate
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attempts to make GUIs driveable from the keyboard?" We have to
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go catch the activate signal on every single GtkEntry widget
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(rather than having widgets whose activate signal is *not*
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caught not catch the Return keystroke, so that it passes on,
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ultimately, to the window, which can activate the default
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widget, i.e. the "OK" button); we have to catch the "key_press_event"
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signal and have the handler check for ESC, so that we can have ESC
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activate the "Cancel" button; in order to support Alt+<key> mnemonics
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for buttons and the like, we may have to construct an accelerator
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group by hand and set up the accelerators by hand (if that even
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works - I've not tried it yet); we have to do a "gtk_widget_grab_focus()"
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to keep some container widget from getting the initial focus, so that
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you don't have to tab into the first widget in order to start typing
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in it; and it now appears that you simply *can't* make a combo box
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get the initial focus, at least not in the obvious fashion. Sigh.... */
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gtk_widget_show(cap_open_w);
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}
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static void
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capture_prep_file_cb(GtkWidget *w, gpointer file_te)
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{
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GtkWidget *caller = gtk_widget_get_toplevel(w);
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GtkWidget *fs;
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/* Has a file selection dialog box already been opened for that top-level
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widget? */
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fs = gtk_object_get_data(GTK_OBJECT(caller), E_FILE_SEL_DIALOG_PTR_KEY);
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if (fs != NULL) {
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/* Yes. Just re-activate that dialog box. */
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reactivate_window(fs);
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return;
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}
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fs = gtk_file_selection_new ("Ethereal: Capture File");
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gtk_object_set_data(GTK_OBJECT(fs), E_CAP_FILE_TE_KEY, file_te);
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/* Set the E_FS_CALLER_PTR_KEY for the new dialog to point to our caller. */
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gtk_object_set_data(GTK_OBJECT(fs), E_FS_CALLER_PTR_KEY, caller);
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/* Set the E_FILE_SEL_DIALOG_PTR_KEY for the caller to point to us */
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gtk_object_set_data(GTK_OBJECT(caller), E_FILE_SEL_DIALOG_PTR_KEY, fs);
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/* Call a handler when the file selection box is destroyed, so we can inform
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our caller, if any, that it's been destroyed. */
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gtk_signal_connect(GTK_OBJECT(fs), "destroy",
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GTK_SIGNAL_FUNC(cap_prep_fs_destroy_cb), NULL);
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gtk_signal_connect (GTK_OBJECT (GTK_FILE_SELECTION(fs)->ok_button),
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"clicked", (GtkSignalFunc) cap_prep_fs_ok_cb, fs);
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/* Connect the cancel_button to destroy the widget */
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gtk_signal_connect (GTK_OBJECT (GTK_FILE_SELECTION(fs)->cancel_button),
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"clicked", (GtkSignalFunc) cap_prep_fs_cancel_cb, fs);
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/* Catch the "key_press_event" signal in the window, so that we can catch
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the ESC key being pressed and act as if the "Cancel" button had
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been selected. */
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dlg_set_cancel(fs, GTK_FILE_SELECTION(fs)->cancel_button);
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gtk_widget_show(fs);
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}
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static void
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cap_prep_fs_ok_cb(GtkWidget *w, gpointer data)
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{
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gtk_entry_set_text(GTK_ENTRY(gtk_object_get_data(GTK_OBJECT(data),
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E_CAP_FILE_TE_KEY)),
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gtk_file_selection_get_filename (GTK_FILE_SELECTION(data)));
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gtk_widget_destroy(GTK_WIDGET(data));
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}
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static void
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cap_prep_fs_cancel_cb(GtkWidget *w, gpointer data)
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{
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gtk_widget_destroy(GTK_WIDGET(data));
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}
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static void
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cap_prep_fs_destroy_cb(GtkWidget *win, gpointer data)
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{
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GtkWidget *caller;
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/* Get the widget that requested that we be popped up.
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(It should arrange to destroy us if it's destroyed, so
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that we don't get a pointer to a non-existent window here.) */
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caller = gtk_object_get_data(GTK_OBJECT(win), E_FS_CALLER_PTR_KEY);
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/* Tell it we no longer exist. */
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gtk_object_set_data(GTK_OBJECT(caller), E_FILE_SEL_DIALOG_PTR_KEY, NULL);
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/* Now nuke this window. */
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gtk_grab_remove(GTK_WIDGET(win));
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gtk_widget_destroy(GTK_WIDGET(win));
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}
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static void
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capture_prep_ok_cb(GtkWidget *ok_bt, gpointer parent_w) {
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GtkWidget *if_cb, *filter_te, *file_te, *count_cb, *snap_sb, *promisc_cb,
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*sync_cb, *auto_scroll_cb, *resolv_cb;
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gchar *if_text;
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gchar *if_name;
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gchar *filter_text;
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gchar *save_file;
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if_cb = (GtkWidget *) gtk_object_get_data(GTK_OBJECT(parent_w), E_CAP_IFACE_KEY);
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filter_te = (GtkWidget *) gtk_object_get_data(GTK_OBJECT(parent_w), E_CAP_FILT_KEY);
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file_te = (GtkWidget *) gtk_object_get_data(GTK_OBJECT(parent_w), E_CAP_FILE_TE_KEY);
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count_cb = (GtkWidget *) gtk_object_get_data(GTK_OBJECT(parent_w), E_CAP_COUNT_KEY);
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snap_sb = (GtkWidget *) gtk_object_get_data(GTK_OBJECT(parent_w), E_CAP_SNAP_KEY);
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promisc_cb = (GtkWidget *) gtk_object_get_data(GTK_OBJECT(parent_w), E_CAP_PROMISC_KEY);
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sync_cb = (GtkWidget *) gtk_object_get_data(GTK_OBJECT(parent_w), E_CAP_SYNC_KEY);
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auto_scroll_cb = (GtkWidget *) gtk_object_get_data(GTK_OBJECT(parent_w), E_CAP_AUTO_SCROLL_KEY);
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resolv_cb = (GtkWidget *) gtk_object_get_data(GTK_OBJECT(parent_w), E_CAP_RESOLVE_KEY);
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if_text =
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g_strdup(gtk_entry_get_text(GTK_ENTRY(GTK_COMBO(if_cb)->entry)));
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if_name = strtok(if_text, " \t");
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if (if_name == NULL) {
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simple_dialog(ESD_TYPE_CRIT, NULL,
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"You didn't specify an interface on which to capture packets.");
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g_free(if_name);
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return;
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}
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if (cfile.iface)
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g_free(cfile.iface);
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cfile.iface = g_strdup(if_name);
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g_free(if_text);
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/* XXX - don't try to get clever and set "cfile.filter" to NULL if the
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filter string is empty, as an indication that we don't have a filter
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and thus don't have to set a filter when capturing - the version of
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libpcap in Red Hat Linux 6.1, and versions based on later patches
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in that series, don't bind the AF_PACKET socket to an interface
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until a filter is set, which means they aren't bound at all if
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no filter is set, which means no packets arrive as input on that
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socket, which means Ethereal never sees any packets. */
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filter_text = gtk_entry_get_text(GTK_ENTRY(filter_te));
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if (cfile.cfilter)
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g_free(cfile.cfilter);
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g_assert(filter_text != NULL);
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cfile.cfilter = g_strdup(filter_text);
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save_file = gtk_entry_get_text(GTK_ENTRY(file_te));
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if (save_file && save_file[0]) {
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/* User specified a file to which the capture should be written. */
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save_file = g_strdup(save_file);
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} else {
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/* User didn't specify a file; save to a temporary file. */
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save_file = NULL;
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}
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cfile.count = atoi(gtk_entry_get_text(GTK_ENTRY(GTK_COMBO(count_cb)->entry)));
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cfile.snap = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(snap_sb));
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if (cfile.snap < 1)
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cfile.snap = WTAP_MAX_PACKET_SIZE;
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else if (cfile.snap < MIN_PACKET_SIZE)
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cfile.snap = MIN_PACKET_SIZE;
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promisc_mode = GTK_TOGGLE_BUTTON (promisc_cb)->active;
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sync_mode = GTK_TOGGLE_BUTTON (sync_cb)->active;
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auto_scroll_live = GTK_TOGGLE_BUTTON (auto_scroll_cb)->active;
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g_resolving_actif = GTK_TOGGLE_BUTTON (resolv_cb)->active;
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gtk_widget_destroy(GTK_WIDGET(parent_w));
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do_capture(save_file);
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}
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static void
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capture_prep_close_cb(GtkWidget *close_bt, gpointer parent_w)
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{
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gtk_grab_remove(GTK_WIDGET(parent_w));
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gtk_widget_destroy(GTK_WIDGET(parent_w));
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}
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static void
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capture_prep_destroy_cb(GtkWidget *win, gpointer user_data)
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{
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GtkWidget *capture_prep_filter_w;
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GtkWidget *fs;
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/* Is there a filter edit/selection dialog associated with this
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Capture Preferences dialog? */
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capture_prep_filter_w = gtk_object_get_data(GTK_OBJECT(win), E_FILT_DIALOG_PTR_KEY);
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if (capture_prep_filter_w != NULL) {
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/* Yes. Destroy it. */
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gtk_widget_destroy(capture_prep_filter_w);
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}
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/* Is there a file selection dialog associated with this
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Print File dialog? */
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fs = gtk_object_get_data(GTK_OBJECT(win), E_FILE_SEL_DIALOG_PTR_KEY);
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if (fs != NULL) {
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/* Yes. Destroy it. */
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gtk_widget_destroy(fs);
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}
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/* Note that we no longer have a "Capture Preferences" dialog box. */
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cap_open_w = NULL;
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}
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#endif /* HAVE_LIBPCAP */
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