2 * Routines for packet capture windows
4 * $Id: capture_dlg.c,v 1.7 1999/10/02 07:13:20 guy Exp $
6 * Ethereal - Network traffic analyzer
7 * By Gerald Combs <gerald@zing.org>
8 * Copyright 1998 Gerald Combs
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version 2
14 * of the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
42 #ifdef HAVE_SYS_SOCKET_H
43 #include <sys/socket.h>
46 #ifdef HAVE_SYS_IOCTL_H
47 #include <sys/ioctl.h>
57 #ifdef NEED_SNPRINTF_H
63 # include "snprintf.h"
66 #ifdef HAVE_SYS_SOCKIO_H
67 # include <sys/sockio.h>
70 #include <wiretap/wtap.h>
74 #include "capture_dlg.h"
75 #include "prefs_dlg.h"
78 /* Capture callback data keys */
79 #define E_CAP_IFACE_KEY "cap_iface"
80 #define E_CAP_FILT_KEY "cap_filter_te"
81 #define E_CAP_FILE_TE_KEY "cap_file_te"
82 #define E_CAP_COUNT_KEY "cap_count"
83 #define E_CAP_SNAP_KEY "cap_snap"
84 #define E_CAP_SYNC_KEY "cap_sync"
85 #define E_CAP_RESOLVE_KEY "cap_resolve"
87 /* Capture filter key */
88 #define E_CAP_FILT_TE_KEY "cap_filt_te"
94 capture_prep_file_cb(GtkWidget *w, gpointer te);
97 cap_prep_fs_ok_cb(GtkWidget *w, gpointer data);
100 cap_prep_fs_cancel_cb(GtkWidget *w, gpointer data);
103 capture_prep_ok_cb(GtkWidget *ok_bt, gpointer parent_w);
106 capture_prep_close_cb(GtkWidget *close_bt, gpointer parent_w);
109 search_for_if_cb(gpointer data, gpointer user_data);
112 free_if_cb(gpointer data, gpointer user_data);
115 capture_prep_cb(GtkWidget *w, gpointer d)
117 GtkWidget *cap_open_w, *if_cb, *if_lb,
118 *count_lb, *count_cb, *main_vb, *if_hb, *count_hb,
119 *filter_hb, *filter_bt, *filter_te,
120 *file_hb, *file_bt, *file_te,
122 *bbox, *ok_bt, *cancel_bt, *snap_lb,
123 *snap_sb, *sync_cb, *resolv_cb;
125 GList *if_list, *count_list = NULL;
126 gchar *count_item1 = "0 (Infinite)", count_item2[16];
128 if_list = get_interface_list();
132 cap_open_w = gtk_window_new(GTK_WINDOW_TOPLEVEL);
133 gtk_window_set_title(GTK_WINDOW(cap_open_w), "Ethereal: Capture Preferences");
135 /* Container for each row of widgets */
136 main_vb = gtk_vbox_new(FALSE, 3);
137 gtk_container_border_width(GTK_CONTAINER(main_vb), 5);
138 gtk_container_add(GTK_CONTAINER(cap_open_w), main_vb);
139 gtk_widget_show(main_vb);
142 if_hb = gtk_hbox_new(FALSE, 3);
143 gtk_container_add(GTK_CONTAINER(main_vb), if_hb);
144 gtk_widget_show(if_hb);
146 if_lb = gtk_label_new("Interface:");
147 gtk_box_pack_start(GTK_BOX(if_hb), if_lb, FALSE, FALSE, 0);
148 gtk_widget_show(if_lb);
150 if_cb = gtk_combo_new();
151 gtk_combo_set_popdown_strings(GTK_COMBO(if_cb), if_list);
153 gtk_entry_set_text(GTK_ENTRY(GTK_COMBO(if_cb)->entry), cf.iface);
155 gtk_entry_set_text(GTK_ENTRY(GTK_COMBO(if_cb)->entry), if_list->data);
156 gtk_box_pack_start(GTK_BOX(if_hb), if_cb, FALSE, FALSE, 0);
157 gtk_widget_show(if_cb);
160 g_free(if_list->data);
161 if_list = g_list_remove_link(if_list, if_list);
165 count_hb = gtk_hbox_new(FALSE, 3);
166 gtk_container_add(GTK_CONTAINER(main_vb), count_hb);
167 gtk_widget_show(count_hb);
169 count_lb = gtk_label_new("Count:");
170 gtk_box_pack_start(GTK_BOX(count_hb), count_lb, FALSE, FALSE, 0);
171 gtk_widget_show(count_lb);
173 count_list = g_list_append(count_list, count_item1);
175 snprintf(count_item2, 15, "%d", cf.count);
176 count_list = g_list_append(count_list, count_item2);
179 count_cb = gtk_combo_new();
180 gtk_combo_set_popdown_strings(GTK_COMBO(count_cb), count_list);
181 gtk_box_pack_start(GTK_BOX(count_hb), count_cb, FALSE, FALSE, 0);
182 gtk_widget_show(count_cb);
185 count_list = g_list_remove_link(count_list, count_list);
188 filter_hb = gtk_hbox_new(FALSE, 3);
189 gtk_container_add(GTK_CONTAINER(main_vb), filter_hb);
190 gtk_widget_show(filter_hb);
192 filter_bt = gtk_button_new_with_label("Filter:");
193 gtk_signal_connect(GTK_OBJECT(filter_bt), "clicked",
194 GTK_SIGNAL_FUNC(prefs_cb), (gpointer) E_PR_PG_FILTER);
195 gtk_box_pack_start(GTK_BOX(filter_hb), filter_bt, FALSE, TRUE, 0);
196 gtk_widget_show(filter_bt);
198 filter_te = gtk_entry_new();
199 if (cf.cfilter) gtk_entry_set_text(GTK_ENTRY(filter_te), cf.cfilter);
200 gtk_object_set_data(GTK_OBJECT(filter_bt), E_FILT_TE_PTR_KEY, filter_te);
201 gtk_box_pack_start(GTK_BOX(filter_hb), filter_te, TRUE, TRUE, 0);
202 gtk_widget_show(filter_te);
205 file_hb = gtk_hbox_new(FALSE, 1);
206 gtk_container_add(GTK_CONTAINER(main_vb), file_hb);
207 gtk_widget_show(file_hb);
209 file_bt = gtk_button_new_with_label("File:");
210 gtk_box_pack_start(GTK_BOX(file_hb), file_bt, FALSE, FALSE, 3);
211 gtk_widget_show(file_bt);
213 file_te = gtk_entry_new();
214 gtk_box_pack_start(GTK_BOX(file_hb), file_te, TRUE, TRUE, 3);
215 gtk_widget_show(file_te);
217 gtk_signal_connect(GTK_OBJECT(file_bt), "clicked",
218 GTK_SIGNAL_FUNC(capture_prep_file_cb), GTK_OBJECT(file_te));
220 /* Misc row: Capture file checkbox and snap spinbutton */
221 caplen_hb = gtk_hbox_new(FALSE, 3);
222 gtk_container_add(GTK_CONTAINER(main_vb), caplen_hb);
223 gtk_widget_show(caplen_hb);
225 snap_lb = gtk_label_new("Capture length");
226 gtk_misc_set_alignment(GTK_MISC(snap_lb), 0, 0.5);
227 gtk_box_pack_start(GTK_BOX(caplen_hb), snap_lb, FALSE, FALSE, 6);
228 gtk_widget_show(snap_lb);
230 adj = (GtkAdjustment *) gtk_adjustment_new((float) cf.snap,
231 MIN_PACKET_SIZE, WTAP_MAX_PACKET_SIZE, 1.0, 10.0, 0.0);
232 snap_sb = gtk_spin_button_new (adj, 0, 0);
233 gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (snap_sb), TRUE);
234 gtk_widget_set_usize (snap_sb, 80, 0);
235 gtk_box_pack_start (GTK_BOX(caplen_hb), snap_sb, FALSE, FALSE, 3);
236 gtk_widget_show(snap_sb);
238 sync_cb = gtk_check_button_new_with_label("Update list of packets in real time");
239 gtk_toggle_button_set_state(GTK_TOGGLE_BUTTON(sync_cb), sync_mode);
240 gtk_container_add(GTK_CONTAINER(main_vb), sync_cb);
241 gtk_widget_show(sync_cb);
243 resolv_cb = gtk_check_button_new_with_label("Enable name resolution");
244 gtk_toggle_button_set_state(GTK_TOGGLE_BUTTON(resolv_cb), g_resolving_actif);
245 gtk_container_add(GTK_CONTAINER(main_vb), resolv_cb);
246 gtk_widget_show(resolv_cb);
248 /* Button row: OK and cancel buttons */
249 bbox = gtk_hbutton_box_new();
250 gtk_button_box_set_layout (GTK_BUTTON_BOX (bbox), GTK_BUTTONBOX_END);
251 gtk_button_box_set_spacing(GTK_BUTTON_BOX(bbox), 5);
252 gtk_container_add(GTK_CONTAINER(main_vb), bbox);
253 gtk_widget_show(bbox);
255 ok_bt = gtk_button_new_with_label ("OK");
256 gtk_signal_connect(GTK_OBJECT(ok_bt), "clicked",
257 GTK_SIGNAL_FUNC(capture_prep_ok_cb), GTK_OBJECT(cap_open_w));
258 GTK_WIDGET_SET_FLAGS(ok_bt, GTK_CAN_DEFAULT);
259 gtk_box_pack_start (GTK_BOX (bbox), ok_bt, TRUE, TRUE, 0);
260 gtk_widget_grab_default(ok_bt);
261 gtk_widget_show(ok_bt);
263 cancel_bt = gtk_button_new_with_label ("Cancel");
264 gtk_signal_connect(GTK_OBJECT(cancel_bt), "clicked",
265 GTK_SIGNAL_FUNC(capture_prep_close_cb), GTK_OBJECT(cap_open_w));
266 GTK_WIDGET_SET_FLAGS(cancel_bt, GTK_CAN_DEFAULT);
267 gtk_box_pack_start (GTK_BOX (bbox), cancel_bt, TRUE, TRUE, 0);
268 gtk_widget_show(cancel_bt);
270 /* Attach pointers to needed widgets to the capture prefs window/object */
271 gtk_object_set_data(GTK_OBJECT(cap_open_w), E_CAP_IFACE_KEY, if_cb);
272 gtk_object_set_data(GTK_OBJECT(cap_open_w), E_CAP_FILT_KEY, filter_te);
273 gtk_object_set_data(GTK_OBJECT(cap_open_w), E_CAP_FILE_TE_KEY, file_te);
274 gtk_object_set_data(GTK_OBJECT(cap_open_w), E_CAP_COUNT_KEY, count_cb);
275 gtk_object_set_data(GTK_OBJECT(cap_open_w), E_CAP_SNAP_KEY, snap_sb);
276 gtk_object_set_data(GTK_OBJECT(cap_open_w), E_CAP_SYNC_KEY, sync_cb);
277 gtk_object_set_data(GTK_OBJECT(cap_open_w), E_CAP_RESOLVE_KEY, resolv_cb);
279 gtk_widget_show(cap_open_w);
283 capture_prep_file_cb(GtkWidget *w, gpointer file_te)
287 fs = gtk_file_selection_new ("Ethereal: Capture File");
289 gtk_object_set_data(GTK_OBJECT(fs), E_CAP_FILE_TE_KEY, file_te);
291 gtk_signal_connect (GTK_OBJECT (GTK_FILE_SELECTION(fs)->ok_button),
292 "clicked", (GtkSignalFunc) cap_prep_fs_ok_cb, fs);
294 /* Connect the cancel_button to destroy the widget */
295 gtk_signal_connect (GTK_OBJECT (GTK_FILE_SELECTION(fs)->cancel_button),
296 "clicked", (GtkSignalFunc) cap_prep_fs_cancel_cb, fs);
302 cap_prep_fs_ok_cb(GtkWidget *w, gpointer data)
304 gtk_entry_set_text(GTK_ENTRY(gtk_object_get_data(GTK_OBJECT(data),
306 gtk_file_selection_get_filename (GTK_FILE_SELECTION(data)));
307 gtk_widget_destroy(GTK_WIDGET(data));
311 cap_prep_fs_cancel_cb(GtkWidget *w, gpointer data)
313 gtk_widget_destroy(GTK_WIDGET(data));
317 capture_prep_ok_cb(GtkWidget *ok_bt, gpointer parent_w) {
318 GtkWidget *if_cb, *filter_te, *file_te, *count_cb, *snap_sb, *sync_cb,
323 if_cb = (GtkWidget *) gtk_object_get_data(GTK_OBJECT(parent_w), E_CAP_IFACE_KEY);
324 filter_te = (GtkWidget *) gtk_object_get_data(GTK_OBJECT(parent_w), E_CAP_FILT_KEY);
325 file_te = (GtkWidget *) gtk_object_get_data(GTK_OBJECT(parent_w), E_CAP_FILE_TE_KEY);
326 count_cb = (GtkWidget *) gtk_object_get_data(GTK_OBJECT(parent_w), E_CAP_COUNT_KEY);
327 snap_sb = (GtkWidget *) gtk_object_get_data(GTK_OBJECT(parent_w), E_CAP_SNAP_KEY);
328 sync_cb = (GtkWidget *) gtk_object_get_data(GTK_OBJECT(parent_w), E_CAP_SYNC_KEY);
329 resolv_cb = (GtkWidget *) gtk_object_get_data(GTK_OBJECT(parent_w), E_CAP_RESOLVE_KEY);
334 g_strdup(gtk_entry_get_text(GTK_ENTRY(GTK_COMBO(if_cb)->entry)));
336 filter_text = gtk_entry_get_text(GTK_ENTRY(filter_te));
339 cf.cfilter = NULL; /* ead 06/16/99 */
340 if (filter_text && filter_text[0]) {
341 cf.cfilter = g_strdup(filter_text);
344 save_file = gtk_entry_get_text(GTK_ENTRY(file_te));
345 if (save_file && save_file[0]) {
346 /* User specified a file to which the capture should be written. */
347 save_file = g_strdup(save_file);
349 /* User didn't specify a file; save to a temporary file. */
353 cf.count = atoi(gtk_entry_get_text(GTK_ENTRY(GTK_COMBO(count_cb)->entry)));
355 cf.snap = gtk_spin_button_get_value_as_int(GTK_SPIN_BUTTON(snap_sb));
357 cf.snap = WTAP_MAX_PACKET_SIZE;
358 else if (cf.snap < MIN_PACKET_SIZE)
359 cf.snap = MIN_PACKET_SIZE;
361 sync_mode = GTK_TOGGLE_BUTTON (sync_cb)->active;
363 g_resolving_actif = GTK_TOGGLE_BUTTON (resolv_cb)->active;
365 gtk_widget_destroy(GTK_WIDGET(parent_w));
367 do_capture(save_file);
371 capture_prep_close_cb(GtkWidget *close_bt, gpointer parent_w)
373 gtk_grab_remove(GTK_WIDGET(parent_w));
374 gtk_widget_destroy(GTK_WIDGET(parent_w));
377 struct search_user_data {
383 get_interface_list() {
385 gint nonloopback_pos = 0;
386 struct ifreq *ifr, *last;
388 struct ifreq ifrflags;
389 int sock = socket(AF_INET, SOCK_DGRAM, 0);
390 struct search_user_data user_data;
392 gchar err_str[PCAP_ERRBUF_SIZE];
396 simple_dialog(ESD_TYPE_WARN, NULL,
397 "Can't list interfaces: error opening socket.");
401 /* Since we have to grab the interface list all at once, we'll make
403 ifc.ifc_len = 1024 * sizeof(struct ifreq);
404 ifc.ifc_buf = malloc(ifc.ifc_len);
406 if (ioctl(sock, SIOCGIFCONF, &ifc) < 0 ||
407 ifc.ifc_len < sizeof(struct ifreq))
409 simple_dialog(ESD_TYPE_WARN, NULL,
410 "Can't list interfaces: SIOCGIFCONF error: %s", strerror(errno));
414 ifr = (struct ifreq *) ifc.ifc_req;
415 last = (struct ifreq *) ((char *) ifr + ifc.ifc_len);
419 * Skip addresses that begin with "dummy", or that include a ":"
420 * (the latter are Solaris virtuals).
422 if (strncmp(ifr->ifr_name, "dummy", 5) == 0 ||
423 strchr(ifr->ifr_name, ':') != NULL)
427 * If we already have this interface name on the list, don't add
428 * it (SIOCGIFCONF returns, at least on BSD-flavored systems, one
429 * entry per interface *address*; if an interface has multiple
430 * addresses, we get multiple entries for it).
432 user_data.name = ifr->ifr_name;
433 user_data.found = FALSE;
434 g_list_foreach(il, search_for_if_cb, &user_data);
439 * Get the interface flags.
441 memset(&ifrflags, 0, sizeof ifrflags);
442 strncpy(ifrflags.ifr_name, ifr->ifr_name, sizeof ifrflags.ifr_name);
443 if (ioctl(sock, SIOCGIFFLAGS, (char *)&ifrflags) < 0) {
446 simple_dialog(ESD_TYPE_WARN, NULL,
447 "Can't list interfaces: SIOCGIFFLAGS error on %s: %s",
448 ifr->ifr_name, strerror(errno));
453 * Skip interfaces that aren't up.
455 if (!(ifrflags.ifr_flags & IFF_UP))
459 * Skip interfaces that we can't open with "libpcap".
461 pch = pcap_open_live(ifr->ifr_name, WTAP_MAX_PACKET_SIZE, 0, 0, err_str);
467 * If it's a loopback interface, add it at the end of the list,
468 * otherwise add it after the last non-loopback interface,
469 * so all loopback interfaces go at the end - we don't want a
470 * loopback interface to be the default capture device unless there
471 * are no non-loopback devices.
473 if ((ifrflags.ifr_flags & IFF_LOOPBACK) ||
474 strncmp(ifr->ifr_name, "lo", 2) == 0)
475 il = g_list_insert(il, g_strdup(ifr->ifr_name), -1);
477 il = g_list_insert(il, g_strdup(ifr->ifr_name), nonloopback_pos);
478 /* Insert the next non-loopback interface after this one. */
484 ifr = (struct ifreq *) ((char *) ifr + ifr->ifr_addr.sa_len + IFNAMSIZ);
486 ifr = (struct ifreq *) ((char *) ifr + sizeof(struct ifreq));
494 simple_dialog(ESD_TYPE_WARN, NULL,
495 "There are no network interfaces that can be opened.\n"
496 "Please check to make sure you have sufficient permission\n"
497 "to capture packets.");
505 g_list_foreach(il, free_if_cb, NULL);
514 search_for_if_cb(gpointer data, gpointer user_data)
516 struct search_user_data *search_user_data = user_data;
518 if (strcmp((char *)data, search_user_data->name) == 0)
519 search_user_data->found = TRUE;
523 free_if_cb(gpointer data, gpointer user_data)