#include <fcntl.h>
#endif
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
+
+#ifdef HAVE_ARPA_INET_H
+#include <arpa/inet.h>
+#endif
+
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h> /* needed to define AF_ values on UNIX */
+#endif
+
+#ifdef HAVE_WINSOCK2_H
+#include <winsock2.h> /* needed to define AF_ values on Windows */
+#endif
+
+#ifdef NEED_INET_V6DEFS_H
+# include "inet_v6defs.h"
+#endif
+
#include <signal.h>
#include <errno.h>
#include <epan/packet.h>
#include <epan/dfilter/dfilter.h>
+#include <epan/ws_strsplit.h>
#include "file.h"
#include "capture.h"
#include "capture_sync.h"
#include "alert_box.h"
#include "simple_dialog.h"
#include <epan/prefs.h>
-#include "conditions.h"
-#include "ringbuffer.h"
#ifdef _WIN32
#include "capture-wpcap.h"
#include "file_util.h"
#include "log.h"
+typedef struct if_stat_cache_item_s {
+ char *name;
+ struct pcap_stat ps;
+} if_stat_cache_item_t;
+struct if_stat_cache_s {
+ int stat_fd;
+ int fork_child;
+ GList *cache_list; /* List of if_stat_chache_entry_t */
+};
-/**
+/**
* Start a capture.
*
* @return TRUE if the capture starts successfully, FALSE otherwise.
g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_INFO, "Capture Kill");
/* kill the capture child */
- sync_pipe_kill(capture_opts);
+ sync_pipe_kill(capture_opts->fork_child);
}
break;
case CF_READ_ABORTED:
- /* User wants to quit program. Exit by leaving the main loop,
+ /* User wants to quit program. Exit by leaving the main loop,
so that any quit functions we registered get called. */
main_window_nested_quit();
return FALSE;
/* if we didn't captured even a single packet, close the file again */
if(cf_get_packet_count(capture_opts->cf) == 0 && !capture_opts->restart) {
- simple_dialog(ESD_TYPE_INFO, ESD_BTN_OK,
+ simple_dialog(ESD_TYPE_INFO, ESD_BTN_OK,
"%sNo packets captured!%s\n"
"\n"
"As no data was captured, closing the %scapture file!\n"
case CF_OK:
break;
case CF_ERROR:
- /* Don't unlink (delete) the save file - leave it around,
+ /* Don't unlink (delete) the save file - leave it around,
for debugging purposes. */
g_free(capture_opts->save_file);
capture_opts->save_file = NULL;
return TRUE;
}
-
+
/* capture child tells us we have new packets to read */
void
capture_input_new_packets(capture_options *capture_opts, int to_read)
}
} else {
/* increase capture file packet counter by the number or incoming packets */
- cf_set_packet_count(capture_opts->cf,
+ cf_set_packet_count(capture_opts->cf,
cf_get_packet_count(capture_opts->cf) + to_read);
cf_callback_invoke(cf_cb_live_capture_fixed_continue, capture_opts->cf);
capture_input_closed(capture_options *capture_opts)
{
int err;
-
+ int packet_count_save;
g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture stopped!");
g_assert(capture_opts->state == CAPTURE_PREPARING || capture_opts->state == CAPTURE_RUNNING);
}
if(capture_opts->real_time_mode) {
- cf_read_status_t status;
+ cf_read_status_t status;
/* Read what remains of the capture file. */
status = cf_finish_tail(capture_opts->cf, &err);
+ /* XXX: If -Q (quit-after-cap) then cf->count clr'd below so save it first */
+ packet_count_save = cf_get_packet_count(capture_opts->cf);
/* Tell the GUI, we are not doing a capture any more.
- Must be done after the cf_finish_tail(), so file lengths are displayed
+ Must be done after the cf_finish_tail(), so file lengths are displayed
correct. */
cf_callback_invoke(cf_cb_live_capture_update_finished, capture_opts->cf);
switch (status) {
case CF_READ_OK:
- if(cf_get_packet_count(capture_opts->cf) == 0 && !capture_opts->restart) {
- simple_dialog(ESD_TYPE_INFO, ESD_BTN_OK,
+ if ((packet_count_save == 0) && !capture_opts->restart) {
+ simple_dialog(ESD_TYPE_INFO, ESD_BTN_OK,
"%sNo packets captured!%s\n"
"\n"
"As no data was captured, closing the %scapture file!\n"
/* this is a normal mode capture and if no error happened, read in the capture file data */
if(capture_opts->save_file != NULL) {
- capture_input_read_all(capture_opts, cf_is_tempfile(capture_opts->cf),
+ capture_input_read_all(capture_opts, cf_is_tempfile(capture_opts->cf),
cf_get_drops_known(capture_opts->cf), cf_get_drops(capture_opts->cf));
}
}
}
}
+/**
+ * Fetch the interface list from a child process (dumpcap).
+ *
+ * @return A GList containing if_info_t structs if successful, NULL otherwise.
+ */
+
+/* XXX - We parse simple text output to get our interface list. Should
+ * we use "real" data serialization instead, e.g. via XML? */
+GList *
+capture_interface_list(int *err, char **err_str)
+{
+ GList *if_list = NULL;
+ int i, j;
+ gchar *msg;
+ gchar **raw_list, **if_parts, **addr_parts;
+ gchar *name;
+ if_info_t *if_info;
+ if_addr_t *if_addr;
+
+ g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture Interface List ...");
+
+ /* Try to get our interface list */
+ *err = sync_interface_list_open(&msg);
+ if (*err != 0) {
+ g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture Interface List failed!");
+ if (err_str) {
+ if (*err_str)
+ *err_str = msg;
+ else
+ g_free(msg);
+ } else {
+ g_free(msg);
+ }
+ return NULL;
+ }
+
+ /* Split our lines */
+ raw_list = g_strsplit(msg, "\n", 0);
+ g_free(msg);
+
+ for (i = 0; raw_list[i] != NULL; i++) {
+ if_parts = g_strsplit(raw_list[i], "\t", 4);
+ if (if_parts[0] == NULL || if_parts[1] == NULL || if_parts[2] == NULL ||
+ if_parts[3] == NULL) {
+ g_strfreev(if_parts);
+ continue;
+ }
+
+ /* Number followed by the name, e.g "1. eth0" */
+ name = strchr(if_parts[0], ' ');
+ if (name) {
+ name++;
+ } else {
+ g_strfreev(if_parts);
+ continue;
+ }
+
+ if_info = g_malloc0(sizeof(if_info_t));
+ if_info->name = g_strdup(name);
+ if (strlen(if_parts[1]) > 0)
+ if_info->description = g_strdup(if_parts[1]);
+ addr_parts = g_strsplit(if_parts[2], ",", 0);
+ for (j = 0; addr_parts[j] != NULL; j++) {
+ if_addr = g_malloc0(sizeof(if_addr_t));
+ if (inet_pton(AF_INET, addr_parts[j], &if_addr->ip_addr.ip4_addr)) {
+ if_addr->type = AT_IPv4;
+ } else if (inet_pton(AF_INET6, addr_parts[j],
+ &if_addr->ip_addr.ip6_addr)) {
+ if_addr->type = AT_IPv6;
+ } else {
+ g_free(if_addr);
+ if_addr = NULL;
+ }
+ if (if_addr) {
+ if_info->ip_addr = g_slist_append(if_info->ip_addr, if_addr);
+ }
+ }
+ if (strcmp(if_parts[3], "loopback") == 0)
+ if_info->loopback = TRUE;
+ g_strfreev(if_parts);
+ g_strfreev(addr_parts);
+ if_list = g_list_append(if_list, if_info);
+ }
+ g_strfreev(raw_list);
+
+ /* Check to see if we built a list */
+ if (if_list == NULL) {
+ if (err_str && *err_str)
+ *err_str = g_strdup("No interfaces found");
+ *err = NO_INTERFACES_FOUND;
+ }
+ return if_list;
+}
+
+/* XXX - We parse simple text output to get our interface list. Should
+ * we use "real" data serialization instead, e.g. via XML? */
+GList *
+capture_pcap_linktype_list(gchar *ifname, char **err_str)
+{
+ GList *linktype_list = NULL;
+ int err, i;
+ gchar *msg;
+ gchar **raw_list, **lt_parts;
+ data_link_info_t *data_link_info;
+
+ g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture Interface List ...");
+
+ /* Try to get our interface list */
+ err = sync_linktype_list_open(ifname, &msg);
+ if (err != 0) {
+ g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture Interface List failed!");
+ if (err_str) {
+ *err_str = msg;
+ } else {
+ g_free(msg);
+ }
+ return NULL;
+ }
+
+ /* Split our lines */
+ raw_list = g_strsplit(msg, "\n", 0);
+ g_free(msg);
+
+ for (i = 0; raw_list[i] != NULL; i++) {
+ /* ...and what if the interface name has a tab in it, Mr. Clever Programmer? */
+ lt_parts = g_strsplit(raw_list[i], "\t", 3);
+ if (lt_parts[0] == NULL || lt_parts[1] == NULL || lt_parts[2] == NULL) {
+ g_strfreev(lt_parts);
+ continue;
+ }
+
+ data_link_info = g_malloc(sizeof (data_link_info_t));
+ data_link_info->dlt = (int) strtol(lt_parts[0], NULL, 10);
+ data_link_info->name = g_strdup(lt_parts[1]);
+ if (strcmp(lt_parts[2], "(not supported)") != 0)
+ data_link_info->description = g_strdup(lt_parts[2]);
+ else
+ data_link_info->description = NULL;
+
+ linktype_list = g_list_append(linktype_list, data_link_info);
+ }
+ g_strfreev(raw_list);
+
+ /* Check to see if we built a list */
+ if (linktype_list == NULL) {
+ if (err_str)
+ *err_str = NULL;
+ }
+ return linktype_list;
+}
+
+if_stat_cache_t *
+capture_stat_start(GList *if_list) {
+ int stat_fd, fork_child;
+ gchar *msg;
+ if_stat_cache_t *sc = NULL;
+ GList *if_entry;
+ if_info_t *if_info;
+ if_stat_cache_item_t *sc_item;
+
+ /* Fire up dumpcap. */
+ /*
+ * XXX - on systems with BPF, the number of BPF devices limits the
+ * number of devices on which you can capture simultaneously.
+ *
+ * This means that
+ *
+ * 1) this might fail if you run out of BPF devices
+ *
+ * and
+ *
+ * 2) opening every interface could leave too few BPF devices
+ * for *other* programs.
+ *
+ * It also means the system could end up getting a lot of traffic
+ * that it has to pass through the networking stack and capture
+ * mechanism, so opening all the devices and presenting packet
+ * counts might not always be a good idea.
+ */
+ if (sync_interface_stats_open(&stat_fd, &fork_child, &msg) == 0) {
+ sc = g_malloc(sizeof(if_stat_cache_t));
+ sc->stat_fd = stat_fd;
+ sc->fork_child = fork_child;
+ sc->cache_list = NULL;
+
+ /* Initialize the cache */
+ for (if_entry = if_list; if_entry != NULL; if_entry = g_list_next(if_entry)) {
+ if_info = if_entry->data;
+ sc_item = g_malloc0(sizeof(if_stat_cache_item_t));
+ sc_item->name = g_strdup(if_info->name);
+ sc->cache_list = g_list_append(sc->cache_list, sc_item);
+ }
+ }
+ return sc;
+}
+
+#define MAX_STAT_LINE_LEN 500
+
+static void
+capture_stat_cache_update(if_stat_cache_t *sc) {
+ gchar stat_line[MAX_STAT_LINE_LEN];
+ gchar **stat_parts;
+ GList *sc_entry;
+ if_stat_cache_item_t *sc_item;
+
+ if (!sc)
+ return;
+
+ while (sync_pipe_gets_nonblock(sc->stat_fd, stat_line, MAX_STAT_LINE_LEN) > 0) {
+ g_strstrip(stat_line);
+ stat_parts = g_strsplit(stat_line, "\t", 3);
+ if (stat_parts[0] == NULL || stat_parts[1] == NULL ||
+ stat_parts[2] == NULL) {
+ g_strfreev(stat_parts);
+ continue;
+ }
+ for (sc_entry = sc->cache_list; sc_entry != NULL; sc_entry = g_list_next(sc_entry)) {
+ sc_item = sc_entry->data;
+ if (strcmp(sc_item->name, stat_parts[0]) == 0) {
+ sc_item->ps.ps_recv = (u_int) strtoul(stat_parts[1], NULL, 10);
+ sc_item->ps.ps_drop = (u_int) strtoul(stat_parts[2], NULL, 10);
+ }
+ }
+ g_strfreev(stat_parts);
+ }
+}
+
+gboolean
+capture_stats(if_stat_cache_t *sc, char *ifname, struct pcap_stat *ps) {
+ GList *sc_entry;
+ if_stat_cache_item_t *sc_item;
+
+ if (!sc || !ifname || !ps) {
+ return FALSE;
+ }
+
+ capture_stat_cache_update(sc);
+ for (sc_entry = sc->cache_list; sc_entry != NULL; sc_entry = g_list_next(sc_entry)) {
+ sc_item = sc_entry->data;
+ if (strcmp(sc_item->name, ifname) == 0) {
+ memcpy(ps, &sc_item->ps, sizeof(struct pcap_stat));
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+
+void
+capture_stat_stop(if_stat_cache_t *sc) {
+ GList *sc_entry;
+ if_stat_cache_item_t *sc_item;
+ gchar *msg;
+
+ if (!sc)
+ return;
+
+ sync_interface_stats_close(&sc->stat_fd, &sc->fork_child, &msg);
+
+ for (sc_entry = sc->cache_list; sc_entry != NULL; sc_entry = g_list_next(sc_entry)) {
+ sc_item = sc_entry->data;
+ g_free(sc_item->name);
+ g_free(sc_item);
+ }
+ g_free(sc);
+}
#endif /* HAVE_LIBPCAP */
git.samba.org / obnox / wireshark / wip.git / blobdiff