849 lines
26 KiB
C
849 lines
26 KiB
C
/* capture.c
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* Routines for packet capture windows
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*
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* $Id: capture.c,v 1.61 1999/08/24 03:19:21 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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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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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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#include <gtk/gtk.h>
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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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#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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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#ifdef HAVE_SYS_IOCTL_H
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#include <sys/ioctl.h>
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#endif
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#ifdef HAVE_NET_IF_H
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#include <net/if.h>
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#endif
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#include <signal.h>
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#include <errno.h>
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#ifdef NEED_SNPRINTF_H
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# ifdef HAVE_STDARG_H
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# include <stdarg.h>
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# else
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# include <varargs.h>
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# endif
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# include "snprintf.h"
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#endif
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#ifdef HAVE_SYS_SOCKIO_H
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# include <sys/sockio.h>
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#endif
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#include "ethereal.h"
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#include "packet.h"
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#include "file.h"
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#include "menu.h"
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#include "capture.h"
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#include "etypes.h"
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#include "util.h"
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#include "prefs.h"
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extern capture_file cf;
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extern GtkWidget *info_bar;
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extern guint file_ctx;
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extern gchar *ethereal_path;
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extern gchar *medium_font;
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extern gchar *bold_font;
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extern int fork_mode;
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extern int sync_pipe[];
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extern int sync_mode;
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extern int sigusr2_received;
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extern int quit_after_cap;
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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"
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#define E_CAP_COUNT_KEY "cap_count"
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#define E_CAP_OPEN_KEY "cap_open"
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#define E_CAP_SNAP_KEY "cap_snap"
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/* Capture filter key */
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#define E_CAP_FILT_TE_KEY "cap_filt_te"
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static void search_for_if_cb(gpointer data, gpointer user_data);
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static void free_if_cb(gpointer data, gpointer user_data);
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static void capture_prep_ok_cb(GtkWidget *, gpointer);
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static void capture_prep_close_cb(GtkWidget *, gpointer);
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static float pct(gint, gint);
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static void capture_stop_cb(GtkWidget *, gpointer);
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static void capture_pcap_cb(u_char *, const struct pcap_pkthdr *,
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const u_char *);
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struct search_user_data {
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char *name;
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int found;
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};
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static GList *
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get_interface_list() {
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GList *il = NULL;
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gint nonloopback_pos = 0;
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struct ifreq *ifr, *last;
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struct ifconf ifc;
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struct ifreq ifrflags;
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int sock = socket(AF_INET, SOCK_DGRAM, 0);
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struct search_user_data user_data;
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if (sock < 0)
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{
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simple_dialog(ESD_TYPE_WARN, NULL,
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"Can't list interfaces: error opening socket.");
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return NULL;
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}
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/* Since we have to grab the interface list all at once, we'll make
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plenty of room */
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ifc.ifc_len = 1024 * sizeof(struct ifreq);
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ifc.ifc_buf = malloc(ifc.ifc_len);
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if (ioctl(sock, SIOCGIFCONF, &ifc) < 0 ||
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ifc.ifc_len < sizeof(struct ifreq))
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{
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simple_dialog(ESD_TYPE_WARN, NULL,
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"Can't list interfaces: SIOCGIFCONF error: %s", strerror(errno));
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return NULL;
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}
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ifr = (struct ifreq *) ifc.ifc_req;
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last = (struct ifreq *) ((char *) ifr + ifc.ifc_len);
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while (ifr < last)
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{
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/*
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* Skip addresses that begin with "dummy", or that include a ":"
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* (the latter are Solaris virtuals).
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*/
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if (strncmp(ifr->ifr_name, "dummy", 5) == 0 ||
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strchr(ifr->ifr_name, ':') != NULL)
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goto next;
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/*
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* If we already have this interface name on the list, don't add
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* it (SIOCGIFCONF returns, at least on BSD-flavored systems, one
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* entry per interface *address*; if an interface has multiple
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* addresses, we get multiple entries for it).
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*/
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user_data.name = ifr->ifr_name;
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user_data.found = FALSE;
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g_list_foreach(il, search_for_if_cb, &user_data);
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if (user_data.found)
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goto next;
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/*
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* Get the interface flags.
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*/
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memset(&ifrflags, 0, sizeof ifrflags);
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strncpy(ifrflags.ifr_name, ifr->ifr_name, sizeof ifrflags.ifr_name);
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if (ioctl(sock, SIOCGIFFLAGS, (char *)&ifrflags) < 0) {
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if (errno == ENXIO)
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goto next;
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simple_dialog(ESD_TYPE_WARN, NULL,
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"Can't list interfaces: SIOCGIFFLAGS error on %s: %s",
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ifr->ifr_name, strerror(errno));
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goto fail;
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}
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/*
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* Skip interfaces that aren't up.
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*/
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if (!(ifrflags.ifr_flags & IFF_UP))
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goto next;
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/*
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* If it's a loopback interface, add it at the end of the list,
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* otherwise add it after the last non-loopback interface,
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* so all loopback interfaces go at the end - we don't want a
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* loopback interface to be the default capture device unless there
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* are no non-loopback devices.
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*/
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if ((ifrflags.ifr_flags & IFF_LOOPBACK) ||
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strncmp(ifr->ifr_name, "lo", 2) == 0)
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il = g_list_insert(il, g_strdup(ifr->ifr_name), -1);
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else {
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il = g_list_insert(il, g_strdup(ifr->ifr_name), nonloopback_pos);
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/* Insert the next non-loopback interface after this one. */
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nonloopback_pos++;
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}
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next:
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#ifdef HAVE_SA_LEN
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ifr = (struct ifreq *) ((char *) ifr + ifr->ifr_addr.sa_len + IFNAMSIZ);
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#else
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ifr = (struct ifreq *) ((char *) ifr + sizeof(struct ifreq));
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#endif
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}
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free(ifc.ifc_buf);
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return il;
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fail:
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g_list_foreach(il, free_if_cb, NULL);
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g_list_free(il);
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return NULL;
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}
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static void
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search_for_if_cb(gpointer data, gpointer user_data)
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{
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struct search_user_data *search_user_data = user_data;
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if (strcmp((char *)data, search_user_data->name) == 0)
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search_user_data->found = TRUE;
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}
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static void
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free_if_cb(gpointer data, gpointer user_data)
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{
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g_free(data);
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}
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void
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capture_prep_cb(GtkWidget *w, gpointer d) {
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GtkWidget *cap_open_w, *if_cb, *if_lb,
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*count_lb, *count_cb, *main_vb, *if_hb, *count_hb,
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*filter_hb, *filter_bt, *filter_te, *caplen_hb,
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*bbox, *ok_bt, *cancel_bt, *snap_lb,
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*snap_sb;
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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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cap_open_w = gtk_window_new(GTK_WINDOW_TOPLEVEL);
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gtk_window_set_title(GTK_WINDOW(cap_open_w), "Ethereal: Capture Preferences");
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/* Container for each row of widgets */
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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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/* Interface row */
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if_hb = gtk_hbox_new(FALSE, 3);
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gtk_container_add(GTK_CONTAINER(main_vb), if_hb);
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gtk_widget_show(if_hb);
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if_lb = gtk_label_new("Interface:");
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gtk_box_pack_start(GTK_BOX(if_hb), if_lb, FALSE, FALSE, 0);
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gtk_widget_show(if_lb);
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if_list = get_interface_list();
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if_cb = gtk_combo_new();
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gtk_combo_set_popdown_strings(GTK_COMBO(if_cb), if_list);
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if (cf.iface)
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gtk_entry_set_text(GTK_ENTRY(GTK_COMBO(if_cb)->entry), cf.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_box_pack_start(GTK_BOX(if_hb), if_cb, FALSE, FALSE, 0);
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gtk_widget_show(if_cb);
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while (if_list) {
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g_free(if_list->data);
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if_list = g_list_remove_link(if_list, if_list);
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}
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/* Count row */
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count_hb = gtk_hbox_new(FALSE, 3);
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gtk_container_add(GTK_CONTAINER(main_vb), count_hb);
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gtk_widget_show(count_hb);
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count_lb = gtk_label_new("Count:");
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gtk_box_pack_start(GTK_BOX(count_hb), count_lb, FALSE, FALSE, 0);
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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 (cf.count) {
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snprintf(count_item2, 15, "%d", cf.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_box_pack_start(GTK_BOX(count_hb), count_cb, FALSE, FALSE, 0);
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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_hb = gtk_hbox_new(FALSE, 3);
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gtk_container_add(GTK_CONTAINER(main_vb), filter_hb);
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gtk_widget_show(filter_hb);
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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(prefs_cb), (gpointer) E_PR_PG_FILTER);
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gtk_box_pack_start(GTK_BOX(filter_hb), filter_bt, FALSE, TRUE, 0);
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gtk_widget_show(filter_bt);
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filter_te = gtk_entry_new();
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if (cf.cfilter) gtk_entry_set_text(GTK_ENTRY(filter_te), cf.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_box_pack_start(GTK_BOX(filter_hb), filter_te, TRUE, TRUE, 0);
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gtk_widget_show(filter_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) cf.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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/* 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_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_widget_show(cap_open_w);
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}
|
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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, *count_cb, *snap_sb;
|
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gchar *filter_text;
|
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char tmpname[128+1];
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|
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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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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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|
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if (cf.iface) g_free(cf.iface);
|
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cf.iface =
|
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g_strdup(gtk_entry_get_text(GTK_ENTRY(GTK_COMBO(if_cb)->entry)));
|
|
|
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filter_text = gtk_entry_get_text(GTK_ENTRY(filter_te));
|
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if (cf.cfilter) g_free(cf.cfilter);
|
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cf.cfilter = NULL; /* ead 06/16/99 */
|
|
if (filter_text && filter_text[0]) {
|
|
cf.cfilter = g_strdup(gtk_entry_get_text(GTK_ENTRY(filter_te)));
|
|
}
|
|
cf.count = atoi(gtk_entry_get_text(GTK_ENTRY(GTK_COMBO(count_cb)->entry)));
|
|
cf.snap = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(snap_sb));
|
|
if (cf.snap < 1)
|
|
cf.snap = WTAP_MAX_PACKET_SIZE;
|
|
else if (cf.snap < MIN_PACKET_SIZE)
|
|
cf.snap = MIN_PACKET_SIZE;
|
|
|
|
gtk_widget_destroy(GTK_WIDGET(parent_w));
|
|
|
|
/* Choose a random name for the capture buffer */
|
|
if (cf.save_file && !cf.user_saved) {
|
|
unlink(cf.save_file); /* silently ignore error */
|
|
g_free(cf.save_file);
|
|
}
|
|
cf.save_file_fd = create_tempfile(tmpname, sizeof tmpname, "ether");
|
|
cf.save_file = g_strdup(tmpname);
|
|
cf.user_saved = 0;
|
|
|
|
if( fork_mode ){ /* use fork() for capture */
|
|
int fork_child;
|
|
char ssnap[24];
|
|
char scount[24]; /* need a constant for len of numbers */
|
|
char save_file_fd[24];
|
|
int err;
|
|
|
|
sprintf(ssnap,"%d",cf.snap); /* in lieu of itoa */
|
|
sprintf(scount,"%d",cf.count);
|
|
sprintf(save_file_fd,"%d",cf.save_file_fd);
|
|
signal(SIGCHLD, SIG_IGN);
|
|
if (sync_mode) pipe(sync_pipe);
|
|
if((fork_child = fork()) == 0){
|
|
/* args: -k -- capture
|
|
* -i interface specification
|
|
* -w file to write
|
|
* -W file descriptor to write
|
|
* -c count to capture
|
|
* -Q quit after capture (forces -k)
|
|
* -s snaplen
|
|
* -S sync mode
|
|
* -m / -b fonts
|
|
* -f "filter expression"
|
|
*/
|
|
if (sync_mode) {
|
|
close(1);
|
|
dup(sync_pipe[1]);
|
|
close(sync_pipe[0]);
|
|
execlp(ethereal_path, "ethereal", "-k", "-Q", "-i", cf.iface,
|
|
"-w", cf.save_file, "-W", save_file_fd,
|
|
"-c", scount, "-s", ssnap, "-S",
|
|
"-m", medium_font, "-b", bold_font,
|
|
(cf.cfilter == NULL)? 0 : "-f",
|
|
(cf.cfilter == NULL)? 0 : cf.cfilter,
|
|
(const char *)NULL);
|
|
}
|
|
else {
|
|
execlp(ethereal_path, "ethereal", "-k", "-Q", "-i", cf.iface,
|
|
"-w", cf.save_file, "-W", save_file_fd,
|
|
"-c", scount, "-s", ssnap,
|
|
"-m", medium_font, "-b", bold_font,
|
|
(cf.cfilter == NULL)? 0 : "-f",
|
|
(cf.cfilter == NULL)? 0 : cf.cfilter,
|
|
(const char *)NULL);
|
|
}
|
|
}
|
|
else {
|
|
cf.filename = cf.save_file;
|
|
if (sync_mode) {
|
|
close(sync_pipe[1]);
|
|
while (!sigusr2_received) {
|
|
struct timeval timeout = {1,0};
|
|
select(0, NULL, NULL, NULL, &timeout);
|
|
if (kill(fork_child, 0) == -1 && errno == ESRCH)
|
|
break;
|
|
}
|
|
if (sigusr2_received) {
|
|
err = tail_cap_file(cf.save_file, &cf);
|
|
if (err != 0) {
|
|
simple_dialog(ESD_TYPE_WARN, NULL,
|
|
file_open_error_message(err, FALSE), cf.save_file);
|
|
}
|
|
}
|
|
sigusr2_received = FALSE;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
capture();
|
|
}
|
|
|
|
static void
|
|
capture_prep_close_cb(GtkWidget *close_bt, gpointer parent_w)
|
|
{
|
|
gtk_grab_remove(GTK_WIDGET(parent_w));
|
|
gtk_widget_destroy(GTK_WIDGET(parent_w));
|
|
}
|
|
|
|
typedef struct _loop_data {
|
|
gint go;
|
|
gint max;
|
|
gint linktype;
|
|
gint sync_packets;
|
|
packet_counts counts;
|
|
wtap_dumper *pdh;
|
|
} loop_data;
|
|
|
|
void
|
|
capture(void) {
|
|
GtkWidget *cap_w, *main_vb, *count_lb, *tcp_lb, *udp_lb, *icmp_lb,
|
|
*ospf_lb, *gre_lb, *netbios_lb, *other_lb, *stop_bt;
|
|
pcap_t *pch;
|
|
gchar err_str[PCAP_ERRBUF_SIZE], label_str[32];
|
|
loop_data ld;
|
|
bpf_u_int32 netnum, netmask;
|
|
time_t upd_time, cur_time;
|
|
int err, inpkts;
|
|
char *errmsg;
|
|
char errmsg_errno[1024+1];
|
|
|
|
ld.go = TRUE;
|
|
ld.counts.total = 0;
|
|
ld.max = cf.count;
|
|
ld.linktype = WTAP_ENCAP_UNKNOWN;
|
|
ld.sync_packets = 0;
|
|
ld.counts.tcp = 0;
|
|
ld.counts.udp = 0;
|
|
ld.counts.icmp = 0;
|
|
ld.counts.ospf = 0;
|
|
ld.counts.gre = 0;
|
|
ld.counts.netbios = 0;
|
|
ld.counts.other = 0;
|
|
ld.pdh = NULL;
|
|
|
|
close_cap_file(&cf, info_bar, file_ctx);
|
|
|
|
pch = pcap_open_live(cf.iface, cf.snap, 1, 250, err_str);
|
|
|
|
if (pch) {
|
|
ld.linktype = wtap_pcap_encap_to_wtap_encap(pcap_datalink(pch));
|
|
if (ld.linktype == WTAP_ENCAP_UNKNOWN) {
|
|
errmsg = "The network you're capturing from is of a type"
|
|
" that Ethereal doesn't support.";
|
|
goto fail;
|
|
}
|
|
ld.pdh = wtap_dump_fdopen(cf.save_file_fd, WTAP_FILE_PCAP,
|
|
ld.linktype, pcap_snapshot(pch), &err);
|
|
|
|
if (ld.pdh == NULL) { /* We have an error */
|
|
switch (err) {
|
|
|
|
case WTAP_ERR_CANT_OPEN:
|
|
errmsg = "The file to which the capture would be saved"
|
|
" couldn't be created for some unknown reason.";
|
|
break;
|
|
|
|
case WTAP_ERR_SHORT_WRITE:
|
|
errmsg = "A full header couldn't be written to the file"
|
|
" to which the capture would be saved.";
|
|
break;
|
|
|
|
default:
|
|
if (err < 0) {
|
|
sprintf(errmsg_errno, "The file to which the capture would be"
|
|
" saved (\"%%s\") could not be opened: Error %d.",
|
|
err);
|
|
} else {
|
|
sprintf(errmsg_errno, "The file to which the capture would be"
|
|
" saved (\"%%s\") could not be opened: %s.",
|
|
strerror(err));
|
|
}
|
|
errmsg = errmsg_errno;
|
|
break;
|
|
}
|
|
fail:
|
|
snprintf(err_str, PCAP_ERRBUF_SIZE, errmsg, cf.save_file);
|
|
simple_dialog(ESD_TYPE_WARN, NULL, err_str);
|
|
pcap_close(pch);
|
|
return;
|
|
}
|
|
|
|
if (cf.cfilter) {
|
|
if (pcap_lookupnet (cf.iface, &netnum, &netmask, err_str) < 0) {
|
|
simple_dialog(ESD_TYPE_WARN, NULL,
|
|
"Can't use filter: Couldn't obtain netmask info (%s).", err_str);
|
|
wtap_dump_close(ld.pdh, NULL);
|
|
unlink(cf.save_file); /* silently ignore error */
|
|
pcap_close(pch);
|
|
return;
|
|
} else if (pcap_compile(pch, &cf.fcode, cf.cfilter, 1, netmask) < 0) {
|
|
simple_dialog(ESD_TYPE_WARN, NULL, "Unable to parse filter string (%s).",
|
|
pcap_geterr(pch));
|
|
wtap_dump_close(ld.pdh, NULL);
|
|
unlink(cf.save_file); /* silently ignore error */
|
|
pcap_close(pch);
|
|
return;
|
|
} else if (pcap_setfilter(pch, &cf.fcode) < 0) {
|
|
simple_dialog(ESD_TYPE_WARN, NULL, "Can't install filter (%s).",
|
|
pcap_geterr(pch));
|
|
wtap_dump_close(ld.pdh, NULL);
|
|
unlink(cf.save_file); /* silently ignore error */
|
|
pcap_close(pch);
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (sync_mode) {
|
|
/* Sync out the capture file, so the header makes it to the file
|
|
system, and signal our parent so that they'll open the capture
|
|
file and update its windows to indicate that we have a live
|
|
capture in progress. */
|
|
fflush(wtap_dump_file(ld.pdh));
|
|
kill(getppid(), SIGUSR2);
|
|
}
|
|
|
|
cap_w = gtk_window_new(GTK_WINDOW_TOPLEVEL);
|
|
gtk_window_set_title(GTK_WINDOW(cap_w), "Ethereal: Capture / Playback");
|
|
|
|
/* Container for capture display widgets */
|
|
main_vb = gtk_vbox_new(FALSE, 1);
|
|
gtk_container_border_width(GTK_CONTAINER(main_vb), 5);
|
|
gtk_container_add(GTK_CONTAINER(cap_w), main_vb);
|
|
gtk_widget_show(main_vb);
|
|
|
|
count_lb = gtk_label_new("Count: 0");
|
|
gtk_box_pack_start(GTK_BOX(main_vb), count_lb, FALSE, FALSE, 3);
|
|
gtk_widget_show(count_lb);
|
|
|
|
tcp_lb = gtk_label_new("TCP: 0 (0.0%)");
|
|
gtk_box_pack_start(GTK_BOX(main_vb), tcp_lb, FALSE, FALSE, 3);
|
|
gtk_widget_show(tcp_lb);
|
|
|
|
udp_lb = gtk_label_new("UDP: 0 (0.0%)");
|
|
gtk_box_pack_start(GTK_BOX(main_vb), udp_lb, FALSE, FALSE, 3);
|
|
gtk_widget_show(udp_lb);
|
|
|
|
icmp_lb = gtk_label_new("ICMP: 0 (0.0%)");
|
|
gtk_box_pack_start(GTK_BOX(main_vb), icmp_lb, FALSE, FALSE, 3);
|
|
gtk_widget_show(icmp_lb);
|
|
|
|
ospf_lb = gtk_label_new("OSPF: 0 (0.0%)");
|
|
gtk_box_pack_start(GTK_BOX(main_vb), ospf_lb, FALSE, FALSE, 3);
|
|
gtk_widget_show(ospf_lb);
|
|
|
|
gre_lb = gtk_label_new("GRE: 0 (0.0%)");
|
|
gtk_box_pack_start(GTK_BOX(main_vb), gre_lb, FALSE, FALSE, 3);
|
|
gtk_widget_show(gre_lb);
|
|
|
|
netbios_lb = gtk_label_new("NetBIOS: 0 (0.0%)");
|
|
gtk_box_pack_start(GTK_BOX(main_vb), netbios_lb, FALSE, FALSE, 3);
|
|
gtk_widget_show(netbios_lb);
|
|
|
|
other_lb = gtk_label_new("Other: 0 (0.0%)");
|
|
gtk_box_pack_start(GTK_BOX(main_vb), other_lb, FALSE, FALSE, 3);
|
|
gtk_widget_show(other_lb);
|
|
|
|
stop_bt = gtk_button_new_with_label ("Stop");
|
|
gtk_signal_connect(GTK_OBJECT(stop_bt), "clicked",
|
|
GTK_SIGNAL_FUNC(capture_stop_cb), (gpointer) &ld);
|
|
gtk_box_pack_end(GTK_BOX(main_vb), stop_bt, FALSE, FALSE, 3);
|
|
GTK_WIDGET_SET_FLAGS(stop_bt, GTK_CAN_DEFAULT);
|
|
gtk_widget_grab_default(stop_bt);
|
|
GTK_WIDGET_SET_FLAGS(stop_bt, GTK_CAN_DEFAULT);
|
|
gtk_widget_grab_default(stop_bt);
|
|
gtk_widget_show(stop_bt);
|
|
|
|
gtk_widget_show(cap_w);
|
|
gtk_grab_add(cap_w);
|
|
|
|
upd_time = time(NULL);
|
|
while (ld.go) {
|
|
while (gtk_events_pending()) gtk_main_iteration();
|
|
inpkts = pcap_dispatch(pch, 1, capture_pcap_cb, (u_char *) &ld);
|
|
if (inpkts > 0)
|
|
ld.sync_packets += inpkts;
|
|
/* Only update once a second so as not to overload slow displays */
|
|
cur_time = time(NULL);
|
|
if (cur_time > upd_time) {
|
|
|
|
upd_time = cur_time;
|
|
|
|
sprintf(label_str, "Count: %d", ld.counts.total);
|
|
gtk_label_set(GTK_LABEL(count_lb), label_str);
|
|
|
|
sprintf(label_str, "TCP: %d (%.1f%%)", ld.counts.tcp,
|
|
pct(ld.counts.tcp, ld.counts.total));
|
|
gtk_label_set(GTK_LABEL(tcp_lb), label_str);
|
|
|
|
sprintf(label_str, "UDP: %d (%.1f%%)", ld.counts.udp,
|
|
pct(ld.counts.udp, ld.counts.total));
|
|
gtk_label_set(GTK_LABEL(udp_lb), label_str);
|
|
|
|
sprintf(label_str, "ICMP: %d (%.1f%%)", ld.counts.icmp,
|
|
pct(ld.counts.icmp, ld.counts.total));
|
|
gtk_label_set(GTK_LABEL(icmp_lb), label_str);
|
|
|
|
sprintf(label_str, "OSPF: %d (%.1f%%)", ld.counts.ospf,
|
|
pct(ld.counts.ospf, ld.counts.total));
|
|
gtk_label_set(GTK_LABEL(ospf_lb), label_str);
|
|
|
|
sprintf(label_str, "GRE: %d (%.1f%%)", ld.counts.gre,
|
|
pct(ld.counts.gre, ld.counts.total));
|
|
gtk_label_set(GTK_LABEL(gre_lb), label_str);
|
|
|
|
sprintf(label_str, "NetBIOS: %d (%.1f%%)", ld.counts.netbios,
|
|
pct(ld.counts.netbios, ld.counts.total));
|
|
gtk_label_set(GTK_LABEL(netbios_lb), label_str);
|
|
|
|
sprintf(label_str, "Other: %d (%.1f%%)", ld.counts.other,
|
|
pct(ld.counts.other, ld.counts.total));
|
|
gtk_label_set(GTK_LABEL(other_lb), label_str);
|
|
|
|
/* do sync here, too */
|
|
fflush(wtap_dump_file(ld.pdh));
|
|
if (sync_mode && ld.sync_packets) {
|
|
char tmp[20];
|
|
sprintf(tmp, "%d*", ld.sync_packets);
|
|
write(1, tmp, strlen(tmp));
|
|
ld.sync_packets = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (ld.pdh) {
|
|
if (!wtap_dump_close(ld.pdh, &err)) {
|
|
switch (err) {
|
|
|
|
case WTAP_ERR_CANT_CLOSE:
|
|
errmsg = "The file to which the capture was being saved"
|
|
" couldn't be closed for some unknown reason.";
|
|
break;
|
|
|
|
case WTAP_ERR_SHORT_WRITE:
|
|
errmsg = "Not all the data could be written to the file"
|
|
" to which the capture was being saved.";
|
|
break;
|
|
|
|
default:
|
|
if (err < 0) {
|
|
sprintf(errmsg_errno, "The file to which the capture was being"
|
|
" saved (\"%%s\") could not be closed: Error %d.",
|
|
err);
|
|
} else {
|
|
sprintf(errmsg_errno, "The file to which the capture was being"
|
|
" saved (\"%%s\") could not be closed: %s.",
|
|
strerror(err));
|
|
}
|
|
errmsg = errmsg_errno;
|
|
break;
|
|
}
|
|
snprintf(err_str, PCAP_ERRBUF_SIZE, errmsg, cf.save_file);
|
|
simple_dialog(ESD_TYPE_WARN, NULL, err_str);
|
|
}
|
|
}
|
|
pcap_close(pch);
|
|
|
|
gtk_grab_remove(GTK_WIDGET(cap_w));
|
|
gtk_widget_destroy(GTK_WIDGET(cap_w));
|
|
} else {
|
|
while (gtk_events_pending()) gtk_main_iteration();
|
|
simple_dialog(ESD_TYPE_WARN, NULL,
|
|
"The capture session could not be initiated (%s).\n"
|
|
"Please check to make sure you have sufficient permissions, and that\n"
|
|
"you have the proper interface specified.", err_str);
|
|
}
|
|
|
|
if( quit_after_cap ){
|
|
/* DON'T unlink the save file. Presumably someone wants it. */
|
|
gtk_exit(0);
|
|
}
|
|
|
|
if (pch) {
|
|
/* "pch" is non-NULL only if we successfully started a capture.
|
|
If we haven't, there's no capture file to load. */
|
|
if ((err = open_cap_file(cf.save_file, &cf)) == 0) {
|
|
/* Set the read filter to NULL. */
|
|
cf.rfcode = NULL;
|
|
err = read_cap_file(&cf);
|
|
set_menu_sensitivity("/File/Save", TRUE);
|
|
set_menu_sensitivity("/File/Save As...", FALSE);
|
|
}
|
|
}
|
|
}
|
|
|
|
static float
|
|
pct(gint num, gint denom) {
|
|
if (denom) {
|
|
return (float) num * 100.0 / (float) denom;
|
|
} else {
|
|
return 0.0;
|
|
}
|
|
}
|
|
|
|
static void
|
|
capture_stop_cb(GtkWidget *w, gpointer data) {
|
|
loop_data *ld = (loop_data *) data;
|
|
|
|
ld->go = FALSE;
|
|
}
|
|
|
|
static void
|
|
capture_pcap_cb(u_char *user, const struct pcap_pkthdr *phdr,
|
|
const u_char *pd) {
|
|
struct wtap_pkthdr whdr;
|
|
loop_data *ld = (loop_data *) user;
|
|
int err;
|
|
|
|
if ((++ld->counts.total >= ld->max) && (ld->max > 0))
|
|
{
|
|
ld->go = FALSE;
|
|
}
|
|
if (ld->pdh) {
|
|
whdr.ts = phdr->ts;
|
|
whdr.caplen = phdr->caplen;
|
|
whdr.len = phdr->len;
|
|
whdr.pkt_encap = ld->linktype;
|
|
|
|
/* XXX - do something if this fails */
|
|
wtap_dump(ld->pdh, &whdr, pd, &err);
|
|
}
|
|
|
|
switch (ld->linktype) {
|
|
case WTAP_ENCAP_ETHERNET:
|
|
capture_eth(pd, phdr->caplen, &ld->counts);
|
|
break;
|
|
case WTAP_ENCAP_FDDI:
|
|
case WTAP_ENCAP_FDDI_BITSWAPPED:
|
|
capture_fddi(pd, phdr->caplen, &ld->counts);
|
|
break;
|
|
case WTAP_ENCAP_TR:
|
|
capture_tr(pd, phdr->caplen, &ld->counts);
|
|
break;
|
|
case WTAP_ENCAP_NULL:
|
|
capture_null(pd, phdr->caplen, &ld->counts);
|
|
break;
|
|
case WTAP_ENCAP_PPP:
|
|
capture_ppp(pd, phdr->caplen, &ld->counts);
|
|
break;
|
|
case WTAP_ENCAP_RAW_IP:
|
|
capture_raw(pd, phdr->caplen, &ld->counts);
|
|
break;
|
|
/* XXX - FreeBSD may append 4-byte ATM pseudo-header to DLT_ATM_RFC1483,
|
|
with LLC header following; we should implement it at some
|
|
point. */
|
|
}
|
|
}
|
|
|
|
#endif /* HAVE_LIBPCAP */
|