forked from osmocom/wireshark
![Lars Roland](/assets/img/avatar_default.png)
object code for libethereal.dll isn't generated by the makefile in /trunk. Having no code in /trunk linked into libethereal.dll anymore, the definition of the macro _NEED_VAR_IMPORT_ can be moved from various source files in /trunk to /trunk/Makefile.nmake . So do that, too. svn path=/trunk/; revision=13389
543 lines
15 KiB
C
543 lines
15 KiB
C
/* capture_if_dlg.c
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* Routines for the capture interface dialog
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*
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* $Id$
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 Gerald Combs
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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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#ifdef HAVE_SYS_STAT_H
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# include <sys/stat.h>
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#endif
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#ifdef HAVE_SYS_WAIT_H
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# include <sys/wait.h>
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#endif
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#include <pcap.h>
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#include <gtk/gtk.h>
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#include "globals.h"
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#include "pcap-util.h"
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#ifdef _WIN32
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#include "capture-wpcap.h"
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#endif
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#include "compat_macros.h"
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#include "simple_dialog.h"
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#include "capture.h"
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#include "capture_dlg.h"
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#include "ui_util.h"
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#include "dlg_utils.h"
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#include "wtap.h"
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#include "main.h"
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#include "help_dlg.h"
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extern gboolean is_capture_in_progress(void);
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/*
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* Keep a static pointer to the current "Capture Interfaces" 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 Interfaces" 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_if_w;
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GList *if_data = NULL;
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guint timer_id;
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GtkWidget *stop_bt;
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GList *if_list;
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/*
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* Timeout, in milliseconds, for reads from the stream of captured packets.
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*/
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#define CAP_READ_TIMEOUT 250
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/* the "runtime" data of one interface */
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typedef struct if_dlg_data_s {
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pcap_t *pch;
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GtkWidget *device_lb;
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GtkWidget *descr_lb;
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GtkWidget *ip_lb;
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GtkWidget *curr_lb;
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GtkWidget *last_lb;
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GtkWidget *capture_bt;
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GtkWidget *prepare_bt;
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guint32 last_packets;
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gchar *device;
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} if_dlg_data_t;
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void update_if(if_dlg_data_t *if_dlg_data);
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/* start capture button was pressed */
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static void
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capture_do_cb(GtkWidget *capture_bt _U_, gpointer if_data)
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{
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if_dlg_data_t *if_dlg_data = if_data;
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if (capture_opts->iface)
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g_free(capture_opts->iface);
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capture_opts->iface = g_strdup(if_dlg_data->device);
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if (capture_opts->save_file)
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g_free(capture_opts->save_file);
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capture_opts->save_file = NULL;
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do_capture(capture_opts);
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}
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/* prepare capture button was pressed */
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static void
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capture_prepare_cb(GtkWidget *prepare_bt _U_, gpointer if_data)
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{
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if_dlg_data_t *if_dlg_data = if_data;
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if (capture_opts->iface)
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g_free(capture_opts->iface);
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capture_opts->iface = g_strdup(if_dlg_data->device);
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capture_prep_cb(NULL, NULL);
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}
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/* open a single interface */
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void
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open_if(gchar *name, if_dlg_data_t *if_dlg_data)
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{
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gchar open_err_str[PCAP_ERRBUF_SIZE];
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/*
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* XXX - on systems with BPF, the number of BPF devices limits the
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* number of devices on which you can capture simultaneously.
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*
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* This means that
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*
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* 1) this might fail if you run out of BPF devices
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*
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* and
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*
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* 2) opening every interface could leave too few BPF devices
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* for *other* programs.
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*
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* It also means the system could end up getting a lot of traffic
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* that it has to pass through the networking stack and capture
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* mechanism, so opening all the devices and presenting packet
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* counts might not always be a good idea.
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*/
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if_dlg_data->pch = pcap_open_live(name,
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MIN_PACKET_SIZE,
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capture_opts->promisc_mode, CAP_READ_TIMEOUT,
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open_err_str);
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if (if_dlg_data->pch != NULL) {
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update_if(if_dlg_data);
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} else {
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printf("open_if: %s\n", open_err_str);
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gtk_label_set_text(GTK_LABEL(if_dlg_data->curr_lb), "error");
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gtk_label_set_text(GTK_LABEL(if_dlg_data->last_lb), "error");
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}
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}
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/* update a single interface */
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void
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update_if(if_dlg_data_t *if_dlg_data)
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{
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struct pcap_stat stats;
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gchar *str;
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guint diff;
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/* pcap_stats() stats values differ on libpcap and winpcap!
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* libpcap: returns the number of packets since pcap_open_live
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* winpcap: returns the number of packets since the last pcap_stats call
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* XXX - if that's true, that's a bug, and should be fixed; "pcap_stats()"
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* is supposed to work the same way on all platforms, including Windows.
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* Note that the WinPcap 3.0 documentation says "The values represent
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* packet statistics from the start of the run to the time of the call."
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* (Note also that some versions of libpcap, on some versions of UN*X,
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* have the same bug.)
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*/
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if (if_dlg_data->pch) {
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if(pcap_stats(if_dlg_data->pch, &stats) >= 0) {
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#ifdef _WIN32
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diff = stats.ps_recv - if_dlg_data->last_packets;
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if_dlg_data->last_packets = stats.ps_recv;
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#else
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diff = stats.ps_recv;
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if_dlg_data->last_packets = stats.ps_recv + if_dlg_data->last_packets;
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#endif
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str = g_strdup_printf("%u", if_dlg_data->last_packets);
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gtk_label_set_text(GTK_LABEL(if_dlg_data->curr_lb), str);
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g_free(str);
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str = g_strdup_printf("%u", diff);
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gtk_label_set_text(GTK_LABEL(if_dlg_data->last_lb), str);
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g_free(str);
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gtk_widget_set_sensitive(if_dlg_data->curr_lb, diff);
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gtk_widget_set_sensitive(if_dlg_data->last_lb, diff);
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} else {
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gtk_label_set_text(GTK_LABEL(if_dlg_data->curr_lb), "error");
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gtk_label_set_text(GTK_LABEL(if_dlg_data->last_lb), "error");
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}
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}
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}
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/* close a single interface */
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void
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close_if(if_dlg_data_t *if_dlg_data)
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{
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if(if_dlg_data->pch)
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pcap_close(if_dlg_data->pch);
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}
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/* update all interfaces */
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gboolean
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update_all(gpointer data)
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{
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GList *curr;
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int ifs;
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if(!cap_if_w) {
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return FALSE;
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}
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for(ifs = 0; (curr = g_list_nth(data, ifs)); ifs++) {
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update_if(curr->data);
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}
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return TRUE;
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}
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/* a live capture has started or stopped */
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void
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set_capture_if_dialog_for_capture_in_progress(gboolean capture_in_progress)
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{
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GList *curr;
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int ifs;
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if(cap_if_w) {
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gtk_widget_set_sensitive(stop_bt, capture_in_progress);
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for(ifs = 0; (curr = g_list_nth(if_data, ifs)); ifs++) {
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if_dlg_data_t *if_dlg_data = curr->data;
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gtk_widget_set_sensitive(if_dlg_data->capture_bt, !capture_in_progress);
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gtk_widget_set_sensitive(if_dlg_data->prepare_bt, !capture_in_progress);
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}
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}
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}
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/* the window was closed, cleanup things */
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static void
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capture_if_destroy_cb(GtkWidget *win _U_, gpointer user_data _U_)
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{
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GList *curr;
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int ifs;
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gtk_timeout_remove(timer_id);
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for(ifs = 0; (curr = g_list_nth(if_data, ifs)); ifs++) {
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if_dlg_data_t *if_dlg_data = curr->data;
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close_if(if_dlg_data);
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g_free(curr->data);
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}
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if_data = NULL;
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free_interface_list(if_list);
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/* Note that we no longer have a "Capture Options" dialog box. */
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cap_if_w = NULL;
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}
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/* start getting capture stats from all interfaces */
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void
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capture_if_cb(GtkWidget *w _U_, gpointer d _U_)
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{
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GtkWidget *main_vb, *bbox, *close_bt, *help_bt;
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GtkWidget *if_tb;
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GtkWidget *if_lb;
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#if GTK_MAJOR_VERSION < 2
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GtkAccelGroup *accel_group;
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#endif
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GtkTooltips *tooltips;
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int err;
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char err_str[PCAP_ERRBUF_SIZE];
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gchar *cant_get_if_list_errstr;
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int row;
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if_dlg_data_t *if_dlg_data;
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int ifs;
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GList *curr;
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if_info_t *if_info;
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GSList *curr_ip;
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if_addr_t *ip_addr;
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GString *if_tool_str = g_string_new("");
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gchar *tmp_str;
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if (cap_if_w != NULL) {
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/* There's already a "Capture Interfaces" dialog box; reactivate it. */
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reactivate_window(cap_if_w);
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return;
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}
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#ifdef _WIN32
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/* Is WPcap loaded? */
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if (!has_wpcap) {
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simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
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"Unable to load WinPcap (wpcap.dll); Ethereal will not be able\n"
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"to capture packets.\n\n"
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"In order to capture packets, WinPcap must be installed; see\n"
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"\n"
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" http://winpcap.polito.it/\n"
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"\n"
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"or the mirror at\n"
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"\n"
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" http://winpcap.mirror.ethereal.com/\n"
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"\n"
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"or the mirror at\n"
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"\n"
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" http://www.mirrors.wiretapped.net/security/packet-capture/winpcap/\n"
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"\n"
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"for a downloadable version of WinPcap and for instructions\n"
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"on how to install WinPcap.");
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return;
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}
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#endif
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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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cant_get_if_list_errstr = cant_get_if_list_error_message(err_str);
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simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, "%s",
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cant_get_if_list_errstr);
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g_free(cant_get_if_list_errstr);
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return;
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}
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cap_if_w = window_new(GTK_WINDOW_TOPLEVEL, "Ethereal: Capture Interfaces");
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tooltips = gtk_tooltips_new();
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#if GTK_MAJOR_VERSION < 2
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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_if_w), accel_group);
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#endif
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main_vb = gtk_vbox_new(FALSE, 0);
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gtk_container_border_width(GTK_CONTAINER(main_vb), 5);
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gtk_container_add(GTK_CONTAINER(cap_if_w), main_vb);
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if_tb = gtk_table_new(6,1, FALSE);
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gtk_table_set_row_spacings(GTK_TABLE(if_tb), 3);
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gtk_table_set_col_spacings(GTK_TABLE(if_tb), 3);
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gtk_container_add(GTK_CONTAINER(main_vb), if_tb);
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row = 0;
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#ifndef _WIN32
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/*
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* On Windows, device names are generally not meaningful - NT 5
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* uses long blobs with GUIDs in them, for example - so we don't
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* bother showing them.
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*/
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if_lb = gtk_label_new("Device");
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gtk_table_attach_defaults(GTK_TABLE(if_tb), if_lb, 0, 1, row, row+1);
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#endif
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if_lb = gtk_label_new("Description");
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gtk_table_attach_defaults(GTK_TABLE(if_tb), if_lb, 1, 2, row, row+1);
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if_lb = gtk_label_new(" IP ");
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gtk_table_attach_defaults(GTK_TABLE(if_tb), if_lb, 2, 3, row, row+1);
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if_lb = gtk_label_new("Packets");
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gtk_table_attach_defaults(GTK_TABLE(if_tb), if_lb, 3, 4, row, row+1);
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if_lb = gtk_label_new(" Packets/s ");
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gtk_table_attach_defaults(GTK_TABLE(if_tb), if_lb, 4, 5, row, row+1);
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stop_bt = BUTTON_NEW_FROM_STOCK(GTK_STOCK_STOP);
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gtk_tooltips_set_tip(tooltips, stop_bt,
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"Stop a running capture.", NULL);
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gtk_table_attach_defaults(GTK_TABLE(if_tb), stop_bt, 5, 7, row, row+1);
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SIGNAL_CONNECT(stop_bt, "clicked", capture_stop_cb, NULL);
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row++;
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for(ifs = 0; (curr = g_list_nth(if_list, ifs)); ifs++) {
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g_string_assign(if_tool_str, "");
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if_info = curr->data;
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if_dlg_data = g_malloc0(sizeof(if_dlg_data_t));
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/* device name */
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if_dlg_data->device_lb = gtk_label_new(if_info->name);
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if_dlg_data->device = if_info->name;
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#ifndef _WIN32
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gtk_misc_set_alignment(GTK_MISC(if_dlg_data->device_lb), 0.0, 0.5);
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gtk_table_attach_defaults(GTK_TABLE(if_tb), if_dlg_data->device_lb, 0, 1, row, row+1);
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#endif
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g_string_append(if_tool_str, "Device: ");
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g_string_append(if_tool_str, if_info->name);
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g_string_append(if_tool_str, "\n");
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/* description */
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if (if_info->description != NULL)
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if_dlg_data->descr_lb = gtk_label_new(if_info->description);
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else
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if_dlg_data->descr_lb = gtk_label_new("");
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gtk_misc_set_alignment(GTK_MISC(if_dlg_data->descr_lb), 0.0, 0.5);
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gtk_table_attach_defaults(GTK_TABLE(if_tb), if_dlg_data->descr_lb, 1, 2, row, row+1);
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if (if_info->description) {
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g_string_append(if_tool_str, "Description: ");
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g_string_append(if_tool_str, if_info->description);
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g_string_append(if_tool_str, "\n");
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}
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/* IP address */
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/* only the first IP address will be shown */
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g_string_append(if_tool_str, "IP: ");
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curr_ip = g_slist_nth(if_info->ip_addr, 0);
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if(curr_ip) {
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ip_addr = (if_addr_t *)curr_ip->data;
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switch (ip_addr->type) {
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case AT_IPv4:
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tmp_str = ip_to_str((guint8 *)&ip_addr->ip_addr.ip4_addr);
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break;
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case AT_IPv6:
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tmp_str = ip6_to_str((struct e_in6_addr *)&ip_addr->ip_addr.ip6_addr);
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break;
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default:
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g_assert_not_reached();
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tmp_str = NULL;
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}
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if_dlg_data->ip_lb = gtk_label_new(tmp_str);
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gtk_widget_set_sensitive(if_dlg_data->ip_lb, TRUE);
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g_string_append(if_tool_str, tmp_str);
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} else {
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if_dlg_data->ip_lb = gtk_label_new("unknown");
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gtk_widget_set_sensitive(if_dlg_data->ip_lb, FALSE);
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g_string_append(if_tool_str, "unknown");
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}
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gtk_table_attach_defaults(GTK_TABLE(if_tb), if_dlg_data->ip_lb, 2, 3, row, row+1);
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g_string_append(if_tool_str, "\n");
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/* packets */
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if_dlg_data->curr_lb = gtk_label_new("-");
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gtk_table_attach_defaults(GTK_TABLE(if_tb), if_dlg_data->curr_lb, 3, 4, row, row+1);
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/* packets/s */
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if_dlg_data->last_lb = gtk_label_new("-");
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gtk_table_attach_defaults(GTK_TABLE(if_tb), if_dlg_data->last_lb, 4, 5, row, row+1);
|
|
|
|
/* capture button */
|
|
if_dlg_data->capture_bt = gtk_button_new_with_label("Capture");
|
|
SIGNAL_CONNECT(if_dlg_data->capture_bt, "clicked", capture_do_cb, if_dlg_data);
|
|
tmp_str = g_strdup_printf("Immediately start a capture from this interface:\n\n%s", if_tool_str->str);
|
|
gtk_tooltips_set_tip(tooltips, if_dlg_data->capture_bt,
|
|
tmp_str, NULL);
|
|
g_free(tmp_str);
|
|
gtk_table_attach_defaults(GTK_TABLE(if_tb), if_dlg_data->capture_bt, 5, 6, row, row+1);
|
|
|
|
/* prepare button */
|
|
if_dlg_data->prepare_bt = gtk_button_new_with_label("Prepare");
|
|
SIGNAL_CONNECT(if_dlg_data->prepare_bt, "clicked", capture_prepare_cb, if_dlg_data);
|
|
gtk_tooltips_set_tip(tooltips, if_dlg_data->prepare_bt,
|
|
"Open the capture options dialog with this interface selected.", NULL);
|
|
gtk_table_attach_defaults(GTK_TABLE(if_tb), if_dlg_data->prepare_bt, 6, 7, row, row+1);
|
|
|
|
open_if(if_info->name, if_dlg_data);
|
|
|
|
if_data = g_list_append(if_data, if_dlg_data);
|
|
|
|
row++;
|
|
}
|
|
|
|
g_string_free(if_tool_str, TRUE);
|
|
|
|
/* Button row: close button */
|
|
if(topic_available(HELP_CAPTURE_INTERFACES_DIALOG)) {
|
|
bbox = dlg_button_row_new(GTK_STOCK_CLOSE, GTK_STOCK_HELP, NULL);
|
|
} else {
|
|
bbox = dlg_button_row_new(GTK_STOCK_CLOSE, NULL);
|
|
}
|
|
gtk_box_pack_start(GTK_BOX(main_vb), bbox, FALSE, FALSE, 5);
|
|
|
|
close_bt = OBJECT_GET_DATA(bbox, GTK_STOCK_CLOSE);
|
|
window_set_cancel_button(cap_if_w, close_bt, window_cancel_button_cb);
|
|
gtk_tooltips_set_tip(tooltips, close_bt, "Close this window.", NULL);
|
|
|
|
if(topic_available(HELP_CAPTURE_INTERFACES_DIALOG)) {
|
|
help_bt = OBJECT_GET_DATA(bbox, GTK_STOCK_HELP);
|
|
SIGNAL_CONNECT(help_bt, "clicked", topic_cb, HELP_CAPTURE_INTERFACES_DIALOG);
|
|
}
|
|
|
|
gtk_widget_grab_default(close_bt);
|
|
|
|
SIGNAL_CONNECT(cap_if_w, "delete_event", window_delete_event_cb, NULL);
|
|
SIGNAL_CONNECT(cap_if_w, "destroy", capture_if_destroy_cb, NULL);
|
|
|
|
gtk_widget_show_all(cap_if_w);
|
|
window_present(cap_if_w);
|
|
|
|
set_capture_if_dialog_for_capture_in_progress(is_capture_in_progress());
|
|
|
|
/* update the interface list every 1000ms */
|
|
timer_id = gtk_timeout_add(1000, update_all, if_data);
|
|
}
|
|
|
|
|
|
#endif /* HAVE_LIBPCAP */
|