#include <unistd.h>
#endif
-#include <stdlib.h>
+#include <stdio.h>
#include <string.h>
-#include <ctype.h>
-
-#ifdef HAVE_FCNTL_H
-#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 <glib.h>
#include <epan/dfilter/dfilter.h>
#include "file.h"
#include "capture.h"
+#include "capture_ifinfo.h"
#include "capture_sync.h"
#include "capture_info.h"
#include "capture_ui_utils.h"
-#include "util.h"
+#include "ui/util.h"
#include "capture-pcap-util.h"
-#include "alert_box.h"
-#include "simple_dialog.h"
#include <epan/prefs.h>
#ifdef _WIN32
#include "capture-wpcap.h"
#endif
-#include "ui_util.h"
+
+#include "ui/simple_dialog.h"
+#include "ui/ui_util.h"
+
#include "wsutil/file_util.h"
#include "log.h"
static void
capture_callback_invoke(int event, capture_options *capture_opts)
{
- capture_callback_data_t *cb;
- GList *cb_item = capture_callbacks;
+ capture_callback_data_t *cb;
+ GList *cb_item = capture_callbacks;
- /* there should be at least one interested */
- g_assert(cb_item != NULL);
+ /* there should be at least one interested */
+ g_assert(cb_item != NULL);
- while(cb_item != NULL) {
- cb = cb_item->data;
- cb->cb_fct(event, capture_opts, cb->user_data);
- cb_item = g_list_next(cb_item);
- }
+ while(cb_item != NULL) {
+ cb = cb_item->data;
+ cb->cb_fct(event, capture_opts, cb->user_data);
+ cb_item = g_list_next(cb_item);
+ }
}
void
capture_callback_add(capture_callback_t func, gpointer user_data)
{
- capture_callback_data_t *cb;
+ capture_callback_data_t *cb;
- cb = g_malloc(sizeof(capture_callback_data_t));
- cb->cb_fct = func;
- cb->user_data = user_data;
+ cb = g_malloc(sizeof(capture_callback_data_t));
+ cb->cb_fct = func;
+ cb->user_data = user_data;
- capture_callbacks = g_list_append(capture_callbacks, cb);
+ capture_callbacks = g_list_append(capture_callbacks, cb);
}
void
capture_callback_remove(capture_callback_t func)
{
- capture_callback_data_t *cb;
- GList *cb_item = capture_callbacks;
-
- while(cb_item != NULL) {
- cb = cb_item->data;
- if(cb->cb_fct == func) {
- capture_callbacks = g_list_remove(capture_callbacks, cb);
- g_free(cb);
- return;
- }
- cb_item = g_list_next(cb_item);
+ capture_callback_data_t *cb;
+ GList *cb_item = capture_callbacks;
+
+ while(cb_item != NULL) {
+ cb = cb_item->data;
+ if(cb->cb_fct == func) {
+ capture_callbacks = g_list_remove(capture_callbacks, cb);
+ g_free(cb);
+ return;
}
+ cb_item = g_list_next(cb_item);
+ }
- g_assert_not_reached();
+ g_assert_not_reached();
}
/**
capture_start(capture_options *capture_opts)
{
gboolean ret;
+ guint i;
+ GString *source = g_string_new("");
+ if (capture_opts->state != CAPTURE_STOPPED)
+ return FALSE;
+ capture_opts->state = CAPTURE_PREPARING;
/* close the currently loaded capture file */
cf_close(capture_opts->cf);
-
- g_assert(capture_opts->state == CAPTURE_STOPPED);
- capture_opts->state = CAPTURE_PREPARING;
-
+ collect_ifaces(capture_opts);
g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture Start ...");
-
+#ifdef _WIN32
+ if (capture_opts->ifaces->len < 2) {
+#else
+ if (capture_opts->ifaces->len < 4) {
+#endif
+ for (i = 0; i < capture_opts->ifaces->len; i++) {
+ interface_options interface_opts;
+
+ interface_opts = g_array_index(capture_opts->ifaces, interface_options, i);
+ if (i > 0) {
+ if (capture_opts->ifaces->len > 2) {
+ g_string_append_printf(source, ",");
+ }
+ g_string_append_printf(source, " ");
+ if (i == capture_opts->ifaces->len - 1) {
+ g_string_append_printf(source, "and ");
+ }
+ }
+ g_string_append_printf(source, "%s", get_iface_description_for_interface(capture_opts, i));
+ if ((interface_opts.cfilter != NULL) &&
+ (strlen(interface_opts.cfilter) > 0)) {
+ g_string_append_printf(source, " (%s)", interface_opts.cfilter);
+ }
+ }
+ } else {
+ g_string_append_printf(source, "%u interfaces", capture_opts->ifaces->len);
+ }
+ cf_set_tempfile_source(capture_opts->cf, source->str);
+ g_string_free(source, TRUE);
/* try to start the capture child process */
ret = sync_pipe_start(capture_opts);
if(!ret) {
{
int err;
-
/* Capture succeeded; attempt to open the capture file. */
if (cf_open(capture_opts->cf, capture_opts->save_file, is_tempfile, &err) != CF_OK) {
/* We're not doing a capture any more, so we don't have a save file. */
return FALSE;
}
-
+
/* Set the read filter to NULL. */
/* XXX - this is odd here; try to put it somewhere where it fits better */
cf_set_rfcode(capture_opts->cf, NULL);
}
/* read in the packet data */
- switch (cf_read(capture_opts->cf)) {
+ switch (cf_read(capture_opts->cf, FALSE)) {
case CF_READ_OK:
case CF_READ_ERROR:
gboolean is_tempfile;
int err;
-
if(capture_opts->state == CAPTURE_PREPARING) {
g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture started!");
}
/* increase the capture file packet counter by the number of incoming packets */
cf_set_packet_count(capture_opts->cf,
cf_get_packet_count(capture_opts->cf) + to_read);
+ cf_fake_continue_tail(capture_opts->cf);
capture_callback_invoke(capture_cb_capture_fixed_continue, capture_opts);
}
capture filter when starting/running the capture.
*/
void
-capture_input_cfilter_error_message(capture_options *capture_opts, char *error_message)
+capture_input_cfilter_error_message(capture_options *capture_opts, guint i, char *error_message)
{
- dfilter_t *rfcode = NULL;
- gchar *safe_cfilter = simple_dialog_format_message(capture_opts->cfilter);
- gchar *safe_cfilter_error_msg = simple_dialog_format_message(error_message);
+ dfilter_t *rfcode = NULL;
+ gchar *safe_cfilter;
+ gchar *safe_descr;
+ gchar *safe_cfilter_error_msg;
+ interface_options interface_opts;
g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture filter error message from child: \"%s\"", error_message);
g_assert(capture_opts->state == CAPTURE_PREPARING || capture_opts->state == CAPTURE_RUNNING);
+ g_assert(i < capture_opts->ifaces->len);
+ interface_opts = g_array_index(capture_opts->ifaces, interface_options, i);
+ safe_cfilter = simple_dialog_format_message(interface_opts.cfilter);
+ safe_descr = simple_dialog_format_message(interface_opts.descr);
+ safe_cfilter_error_msg = simple_dialog_format_message(error_message);
/* Did the user try a display filter? */
- if (dfilter_compile(capture_opts->cfilter, &rfcode) && rfcode != NULL) {
+ if (dfilter_compile(interface_opts.cfilter, &rfcode) && rfcode != NULL) {
simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
- "%sInvalid capture filter: \"%s\"!%s\n"
+ "%sInvalid capture filter \"%s\" for interface %s!%s\n"
"\n"
"That string looks like a valid display filter; however, it isn't a valid\n"
"capture filter (%s).\n"
"so you can't use most display filter expressions as capture filters.\n"
"\n"
"See the User's Guide for a description of the capture filter syntax.",
- simple_dialog_primary_start(), safe_cfilter,
+ simple_dialog_primary_start(), safe_cfilter, safe_descr,
simple_dialog_primary_end(), safe_cfilter_error_msg);
dfilter_free(rfcode);
} else {
simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
- "%sInvalid capture filter: \"%s\"!%s\n"
+ "%sInvalid capture filter \"%s\" for interface %s!%s\n"
"\n"
"That string isn't a valid capture filter (%s).\n"
"See the User's Guide for a description of the capture filter syntax.",
- simple_dialog_primary_start(), safe_cfilter,
+ simple_dialog_primary_start(), safe_cfilter, safe_descr,
simple_dialog_primary_end(), safe_cfilter_error_msg);
}
g_free(safe_cfilter_error_msg);
+ g_free(safe_descr);
g_free(safe_cfilter);
/* the capture child will close the sync_pipe if required, nothing to do for now */
/* capture child closed its side of the pipe, do the required cleanup */
void
-capture_input_closed(capture_options *capture_opts)
+capture_input_closed(capture_options *capture_opts, gchar *msg)
{
- 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 we didn't start the capture, do a fake start. */
- /* (happens if we got an error message - we won't get a filename then). */
- if(capture_opts->state == CAPTURE_PREPARING) {
- if(capture_opts->real_time_mode) {
- capture_callback_invoke(capture_cb_capture_update_started, capture_opts);
- } else {
- capture_callback_invoke(capture_cb_capture_fixed_started, capture_opts);
- }
- }
-
- if(capture_opts->real_time_mode) {
- 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
- correctly displayed */
- capture_callback_invoke(capture_cb_capture_update_finished, capture_opts);
+ int err;
+ int packet_count_save;
- /* Finish the capture. */
- switch (status) {
+ g_log(LOG_DOMAIN_CAPTURE, G_LOG_LEVEL_MESSAGE, "Capture stopped!");
+ g_assert(capture_opts->state == CAPTURE_PREPARING || capture_opts->state == CAPTURE_RUNNING);
- case CF_READ_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"
-"\n"
-"\n"
-"Help about capturing can be found at:\n"
-"\n"
-" http://wiki.wireshark.org/CaptureSetup"
-#ifdef _WIN32
-"\n\n"
-"Wireless (Wi-Fi/WLAN):\n"
-"Try to switch off promiscuous mode in the Capture Options!"
-#endif
-"",
- simple_dialog_primary_start(), simple_dialog_primary_end(),
- cf_is_tempfile(capture_opts->cf) ? "temporary " : "");
- cf_close(capture_opts->cf);
- }
- break;
- case CF_READ_ERROR:
- /* Just because we got an error, that doesn't mean we were unable
- to read any of the file; we handle what we could get from the
- file. */
- break;
-
- case CF_READ_ABORTED:
- /* Exit by leaving the main loop, so that any quit functions
- we registered get called. */
- main_window_quit();
- }
+ if (msg != NULL)
+ simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, "%s", msg);
+ /* if we didn't start the capture, do a fake start. */
+ /* (happens if we got an error message - we won't get a filename then). */
+ if(capture_opts->state == CAPTURE_PREPARING) {
+ if(capture_opts->real_time_mode) {
+ capture_callback_invoke(capture_cb_capture_update_started, capture_opts);
} else {
- /* first of all, we are not doing a capture any more */
- capture_callback_invoke(capture_cb_capture_fixed_finished, capture_opts);
-
- /* 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),
- cf_get_drops_known(capture_opts->cf), cf_get_drops(capture_opts->cf));
- }
+ capture_callback_invoke(capture_cb_capture_fixed_started, capture_opts);
}
+ }
- if(capture_opts->show_info)
- capture_info_close();
-
- capture_opts->state = CAPTURE_STOPPED;
+ if(capture_opts->real_time_mode) {
+ cf_read_status_t status;
- /* if we couldn't open a capture file, there's nothing more for us to do */
- if(capture_opts->save_file == NULL) {
- cf_close(capture_opts->cf);
- return;
- }
+ /* Read what remains of the capture file. */
+ status = cf_finish_tail(capture_opts->cf, &err);
- /* does the user wants to restart the current capture? */
- if(capture_opts->restart) {
- capture_opts->restart = FALSE;
+ /* 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
+ correctly displayed */
+ capture_callback_invoke(capture_cb_capture_update_finished, capture_opts);
- ws_unlink(capture_opts->save_file);
+ /* Finish the capture. */
+ switch (status) {
- /* if it was a tempfile, throw away the old filename (so it will become a tempfile again) */
- if(cf_is_tempfile(capture_opts->cf)) {
- g_free(capture_opts->save_file);
- capture_opts->save_file = NULL;
- }
+ case CF_READ_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"
+ "\n"
+ "\n"
+ "Help about capturing can be found at:\n"
+ "\n"
+ " http://wiki.wireshark.org/CaptureSetup"
+#ifdef _WIN32
+ "\n\n"
+ "Wireless (Wi-Fi/WLAN):\n"
+ "Try to switch off promiscuous mode in the Capture Options!"
+#endif
+ "",
+ simple_dialog_primary_start(), simple_dialog_primary_end(),
+ cf_is_tempfile(capture_opts->cf) ? "temporary " : "");
+ cf_close(capture_opts->cf);
+ }
+ break;
+ case CF_READ_ERROR:
+ /* Just because we got an error, that doesn't mean we were unable
+ to read any of the file; we handle what we could get from the
+ file. */
+ break;
- /* ... and start the capture again */
- capture_start(capture_opts);
- } else {
- /* We're not doing a capture any more, so we don't have a save file. */
- g_free(capture_opts->save_file);
- capture_opts->save_file = NULL;
+ case CF_READ_ABORTED:
+ /* Exit by leaving the main loop, so that any quit functions
+ we registered get called. */
+ main_window_quit();
+ break;
}
-}
-/**
- * Fetch the interface list from a child process (dumpcap).
- *
- * @return A GList containing if_info_t structs if successful, NULL (with err and possibly err_str set) otherwise.
- *
- */
+ } else {
+ /* first of all, we are not doing a capture any more */
+ capture_callback_invoke(capture_cb_capture_fixed_finished, capture_opts);
-/* 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) {
- *err_str = msg;
- } else {
- g_free(msg);
- }
- return NULL;
+ /* 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),
+ cf_get_drops_known(capture_opts->cf), cf_get_drops(capture_opts->cf));
}
+ }
- /* Split our lines */
-#ifdef _WIN32
- raw_list = g_strsplit(msg, "\r\n", 0);
-#else
- raw_list = g_strsplit(msg, "\n", 0);
-#endif
- g_free(msg);
+ if(capture_opts->show_info)
+ capture_info_close();
- 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);
+ capture_opts->state = CAPTURE_STOPPED;
- /* Check to see if we built a list */
- if (if_list == NULL) {
- *err = NO_INTERFACES_FOUND;
- if (err_str)
- *err_str = g_strdup("No interfaces found");
- }
- return if_list;
-}
+ /* if we couldn't open a capture file, there's nothing more for us to do */
+ if(capture_opts->save_file == NULL) {
+ cf_close(capture_opts->cf);
+ return;
+ }
-/* 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(const 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;
- }
+ /* does the user wants to restart the current capture? */
+ if(capture_opts->restart) {
+ capture_opts->restart = FALSE;
- /* Split our lines */
-#ifdef _WIN32
- raw_list = g_strsplit(msg, "\r\n", 0);
-#else
- raw_list = g_strsplit(msg, "\n", 0);
-#endif
- g_free(msg);
+ ws_unlink(capture_opts->save_file);
- 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);
+ /* if it was a tempfile, throw away the old filename (so it will become a tempfile again) */
+ if(cf_is_tempfile(capture_opts->cf)) {
+ g_free(capture_opts->save_file);
+ capture_opts->save_file = NULL;
}
- g_strfreev(raw_list);
- /* Check to see if we built a list */
- if (linktype_list == NULL) {
- if (err_str)
- *err_str = NULL;
+ /* ... and start the capture again */
+ if (capture_opts->ifaces->len == 0) {
+ collect_ifaces(capture_opts);
}
- return linktype_list;
+ capture_start(capture_opts);
+ } else {
+ /* We're not doing a capture any more, so we don't have a save file. */
+ g_free(capture_opts->save_file);
+ capture_opts->save_file = NULL;
+ }
}
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);
- }
+capture_stat_start(capture_options *capture_opts) {
+ int stat_fd, fork_child;
+ gchar *msg;
+ if_stat_cache_t *sc = NULL;
+ if_stat_cache_item_t *sc_item;
+ guint i;
+ interface_t device;
+
+ /* 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 (i = 0; i < capture_opts->all_ifaces->len; i++) {
+ device = g_array_index(capture_opts->all_ifaces, interface_t, i);
+ if (device.type != IF_PIPE && &(device.if_info)) {
+ sc_item = g_malloc0(sizeof(if_stat_cache_item_t));
+ sc_item->name = g_strdup(device.if_info.name);
+ sc->cache_list = g_list_append(sc->cache_list, sc_item);
+ }
}
- return sc;
+ }
+ 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);
+ 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;
+ GList *sc_entry;
+ if_stat_cache_item_t *sc_item;
- if (!sc || !ifname || !ps) {
- return FALSE;
- }
+ 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;
- }
+ 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;
+ }
+ return FALSE;
}
void
capture_stat_stop(if_stat_cache_t *sc) {
- GList *sc_entry;
- if_stat_cache_item_t *sc_item;
- gchar *msg;
+ GList *sc_entry;
+ if_stat_cache_item_t *sc_item;
+ int ret;
+ gchar *msg;
- if (!sc)
- return;
+ if (!sc)
+ return;
- sync_interface_stats_close(&sc->stat_fd, &sc->fork_child, &msg);
+ ret = sync_interface_stats_close(&sc->stat_fd, &sc->fork_child, &msg);
+ if (ret == -1) {
+ /* XXX - report failure? */
+ g_free(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);
+ 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