debian conntrack 0.9.14-2

1 files changed, 206 insertions, 0 deletions

diff --git a/src/stats-mode.c b/src/stats-mode.c
new file mode 100644
index 0000000..0403ce2
--- /dev/null
+++ b/src/stats-mode.c
@@ -0,0 +1,206 @@
+/*
+ * (C) 2006-2007 by Pablo Neira Ayuso <pablo@netfilter.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "netlink.h"
+#include "traffic_stats.h"
+#include "cache.h"
+#include "log.h"
+#include "conntrackd.h"
+#include "internal.h"
+
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+#include <libnetfilter_conntrack/libnetfilter_conntrack.h>
+
+static int init_stats(void)
+{
+	state.stats = malloc(sizeof(struct ct_stats_state));
+	if (!state.stats) {
+		dlog(LOG_ERR, "can't allocate memory for stats");
+		return -1;
+	}
+	memset(state.stats, 0, sizeof(struct ct_stats_state));
+
+	STATE_STATS(cache) = cache_create("stats", NO_FEATURES, NULL);
+	if (!STATE_STATS(cache)) {
+		dlog(LOG_ERR, "can't allocate memory for the "
+			      "external cache");
+		free(state.stats);
+		return -1;
+	}
+
+	return 0;
+}
+
+static void kill_stats(void)
+{
+	cache_destroy(STATE_STATS(cache));
+}
+
+/* handler for requests coming via UNIX socket */
+static int local_handler_stats(int fd, int type, void *data)
+{
+	int ret = LOCAL_RET_OK;
+
+	switch(type) {
+	case DUMP_INTERNAL:
+		cache_dump(STATE_STATS(cache), fd, NFCT_O_PLAIN);
+		break;
+	case DUMP_INT_XML:
+		cache_dump(STATE_STATS(cache), fd, NFCT_O_XML);
+		break;
+	case FLUSH_CACHE:
+	case FLUSH_INT_CACHE:
+		dlog(LOG_NOTICE, "flushing caches");
+		cache_flush(STATE_STATS(cache));
+		break;
+	case KILL:
+		killer(0);
+		break;
+	case STATS:
+		cache_stats(STATE_STATS(cache), fd);
+		dump_traffic_stats(fd);
+		break;
+	case STATS_CACHE:
+		cache_stats_extended(STATE_STATS(cache), fd);
+		break;
+	default:
+		ret = 0;
+		break;
+	}
+
+	return ret;
+}
+
+static void populate_stats(struct nf_conntrack *ct)
+{
+	nfct_attr_unset(ct, ATTR_ORIG_COUNTER_BYTES);
+	nfct_attr_unset(ct, ATTR_ORIG_COUNTER_PACKETS);
+	nfct_attr_unset(ct, ATTR_REPL_COUNTER_BYTES);
+	nfct_attr_unset(ct, ATTR_REPL_COUNTER_PACKETS);
+	nfct_attr_unset(ct, ATTR_TIMEOUT);
+	nfct_attr_unset(ct, ATTR_USE);
+
+	cache_update_force(STATE_STATS(cache), ct);
+}
+
+static int resync_stats(enum nf_conntrack_msg_type type,
+			struct nf_conntrack *ct,
+			void *data)
+{
+	if (ct_filter_conntrack(ct, 1))
+		return NFCT_CB_CONTINUE;
+
+	/* This is required by kernels < 2.6.20 */
+	nfct_attr_unset(ct, ATTR_TIMEOUT);
+	nfct_attr_unset(ct, ATTR_ORIG_COUNTER_BYTES);
+	nfct_attr_unset(ct, ATTR_ORIG_COUNTER_PACKETS);
+	nfct_attr_unset(ct, ATTR_REPL_COUNTER_BYTES);
+	nfct_attr_unset(ct, ATTR_REPL_COUNTER_PACKETS);
+	nfct_attr_unset(ct, ATTR_USE);
+
+	cache_update_force(STATE_STATS(cache), ct);
+
+	return NFCT_CB_CONTINUE;
+}
+
+static int purge_step(void *data1, void *data2)
+{
+	struct cache_object *obj = data2;
+
+	STATE(get_retval) = 0;
+	nl_get_conntrack(STATE(get), obj->ct); /* modifies STATE(get_retval) */
+	if (!STATE(get_retval)) {
+		cache_del(STATE_STATS(cache), obj);
+		dlog_ct(STATE(stats_log), obj->ct, NFCT_O_PLAIN);
+		cache_object_free(obj);
+	}
+
+	return 0;
+}
+
+static void purge_stats(void)
+{
+	cache_iterate(STATE_STATS(cache), NULL, purge_step);
+}
+
+static void
+event_new_stats(struct nf_conntrack *ct, int origin)
+{
+	int id;
+	struct cache_object *obj;
+
+	nfct_attr_unset(ct, ATTR_TIMEOUT);
+
+	obj = cache_find(STATE_STATS(cache), ct, &id);
+	if (obj == NULL) {
+		obj = cache_object_new(STATE_STATS(cache), ct);
+		if (obj == NULL)
+			return;
+
+		if (cache_add(STATE_STATS(cache), obj, id) == -1) {
+			cache_object_free(obj);
+			return;
+		}
+	}
+	return;
+}
+
+static void
+event_update_stats(struct nf_conntrack *ct, int origin)
+{
+	nfct_attr_unset(ct, ATTR_TIMEOUT);
+	cache_update_force(STATE_STATS(cache), ct);
+}
+
+static int
+event_destroy_stats(struct nf_conntrack *ct, int origin)
+{
+	int id;
+	struct cache_object *obj;
+
+	nfct_attr_unset(ct, ATTR_TIMEOUT);
+
+	obj = cache_find(STATE_STATS(cache), ct, &id);
+	if (obj) {
+		cache_del(STATE_STATS(cache), obj);
+		dlog_ct(STATE(stats_log), ct, NFCT_O_PLAIN);
+		cache_object_free(obj);
+		return 1;
+	}
+	return 0;
+}
+
+static struct internal_handler internal_cache_stats = {
+	.flags			= INTERNAL_F_POPULATE | INTERNAL_F_RESYNC,
+	.populate		= populate_stats,
+	.resync			= resync_stats,
+	.purge			= purge_stats,
+	.new			= event_new_stats,
+	.update			= event_update_stats,
+	.destroy		= event_destroy_stats
+};
+
+struct ct_mode stats_mode = {
+	.init 			= init_stats,
+	.run			= NULL,
+	.local			= local_handler_stats,
+	.kill			= kill_stats,
+	.internal		= &internal_cache_stats,
+};