From Oleg Terletsky: Support for SCTP chunk counters. Modified to handle bundling correctly.

svn path=/trunk/; revision=13823

1 files changed, 265 insertions, 0 deletions

diff --git a/tap-sctpchunkstat.c b/tap-sctpchunkstat.c
new file mode 100644
index 0000000000..8cdf8e5bdc
--- /dev/null
+++ b/tap-sctpchunkstat.c
@@ -0,0 +1,265 @@
+/* tap_sctpchunkstat.c
+ * SCTP chunk counter for ethereal
+ * Copyright 2005 Oleg Terletsky <oleg.terletsky@comverse.com>
+ *
+ * $Id:$
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@ethereal.com>
+ * Copyright 1998 Gerald Combs
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+/* With MSVC and a libethereal.dll this file needs to import some variables 
+   in a special way. Therefore _NEED_VAR_IMPORT_ is defined. */  
+#define _NEED_VAR_IMPORT_
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdio.h>
+
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+
+#include <string.h>
+#include "epan/packet_info.h"
+#include "epan/addr_resolv.h"
+#include <epan/tap.h>
+#include "epan/value_string.h"
+#include "register.h"
+#include <epan/dissectors/packet-sctp.h>
+
+typedef struct sctp_ep {
+	struct sctp_ep* next;
+	address src;
+	address dst;
+	guint16 sport;
+	guint16 dport;
+	guint32 chunk_count[256];
+} sctp_ep_t;
+
+
+/* used to keep track of the statistics for an entire program interface */
+typedef struct _sctpstat_t {
+	char*      filter;
+	guint32    number_of_packets;
+	sctp_ep_t* ep_list;
+} sctpstat_t;
+
+
+#define SCTP_DATA_CHUNK_ID               0
+#define SCTP_INIT_CHUNK_ID               1
+#define SCTP_INIT_ACK_CHUNK_ID           2
+#define SCTP_SACK_CHUNK_ID               3
+#define SCTP_HEARTBEAT_CHUNK_ID          4
+#define SCTP_HEARTBEAT_ACK_CHUNK_ID      5
+#define SCTP_ABORT_CHUNK_ID              6
+#define SCTP_SHUTDOWN_CHUNK_ID           7
+#define SCTP_SHUTDOWN_ACK_CHUNK_ID       8
+#define SCTP_ERROR_CHUNK_ID              9
+#define SCTP_COOKIE_ECHO_CHUNK_ID       10
+#define SCTP_COOKIE_ACK_CHUNK_ID        11
+#define SCTP_ECNE_CHUNK_ID              12
+#define SCTP_CWR_CHUNK_ID               13
+#define SCTP_SHUTDOWN_COMPLETE_CHUNK_ID 14
+#define SCTP_AUTH_CHUNK_ID            0x16
+#define SCTP_ASCONF_ACK_CHUNK_ID      0x80
+#define SCTP_PKTDROP_CHUNK_ID         0x81
+#define SCTP_FORWARD_TSN_CHUNK_ID     0xC0
+#define SCTP_ASCONF_CHUNK_ID          0xC1
+#define SCTP_IETF_EXT                 0xFF
+
+#define CHUNK_TYPE_OFFSET 0
+#define CHUNK_TYPE(x)(tvb_get_guint8((x), CHUNK_TYPE_OFFSET))
+
+
+extern gchar* address_to_str(const address *);
+
+
+static void
+sctpstat_reset(void *phs)
+{
+	sctpstat_t* sctp_stat = (sctpstat_t *)phs;
+	sctp_ep_t* list = (sctp_ep_t*)sctp_stat->ep_list;
+	sctp_ep_t* tmp = NULL;
+	guint16 chunk_type;
+	
+	if(!list)
+		return;
+
+	for(tmp = list; tmp ; tmp=tmp->next)
+		for(chunk_type = 0; chunk_type < 256; chunk_type++)
+			tmp->chunk_count[chunk_type] = 0;
+
+	sctp_stat->number_of_packets = 0;
+}
+
+
+sctp_ep_t* alloc_sctp_ep(struct _sctp_info *si)
+{
+	sctp_ep_t* ep;
+	guint16 chunk_type;
+
+	if(!si)
+		return NULL;
+
+	if (!(ep = g_malloc(sizeof(sctp_ep_t))))
+		return NULL;
+	
+	COPY_ADDRESS(&ep->src,&si->ip_src);
+	COPY_ADDRESS(&ep->dst,&si->ip_dst);
+	ep->sport = si->sport;
+	ep->dport = si->dport;
+	ep->next = NULL;
+	for(chunk_type = 0; chunk_type < 256; chunk_type++)
+		ep->chunk_count[chunk_type] = 0;
+	return ep;
+}
+
+
+	
+
+static int
+sctpstat_packet(void *phs, packet_info *pinfo _U_, epan_dissect_t *edt _U_, const void *phi)
+{
+
+	sctpstat_t *hs=(sctpstat_t *)phs;
+	sctp_ep_t *tmp = NULL, *te = NULL;
+	struct _sctp_info *si = (struct _sctp_info *) phi;
+	guint32 tvb_number;
+	guint8 chunk_type;
+	
+	if (!hs)
+		return (0);
+		
+	hs->number_of_packets++;
+	
+	if(!hs->ep_list) {
+		hs->ep_list = alloc_sctp_ep(si);
+		te = hs->ep_list;
+	} else {
+		for(tmp=hs->ep_list ; tmp ; tmp=tmp->next)
+		{
+			if((!CMP_ADDRESS(&tmp->src,&si->ip_src)) &&
+			   (!CMP_ADDRESS(&tmp->dst,&si->ip_dst)) &&
+			   (tmp->sport == si->sport) &&
+			   (tmp->dport == si->dport))
+			{
+				te = tmp;
+				break;
+			}
+		}
+		if(!te) {
+			if ((te = alloc_sctp_ep(si))) {
+				te->next = hs->ep_list;
+				hs->ep_list = te;
+			}
+		}
+	}
+
+	if(!te)
+		return (0);
+
+	
+	if (si->number_of_tvbs > 0) {
+		chunk_type = CHUNK_TYPE(si->tvb[0]);
+		if ((chunk_type == SCTP_INIT_CHUNK_ID) ||
+		    (chunk_type == SCTP_INIT_ACK_CHUNK_ID)) {
+			te->chunk_count[chunk_type]++;
+		} else {
+			for(tvb_number = 0; tvb_number < si->number_of_tvbs; tvb_number++)
+				te->chunk_count[CHUNK_TYPE(si->tvb[tvb_number])]++;
+		}
+	}
+	return (1);
+}
+
+
+static void
+sctpstat_draw(void *phs)
+{
+	sctpstat_t *hs=(sctpstat_t *)phs;
+	sctp_ep_t* list = hs->ep_list, *tmp;
+
+	printf("-------------------------------------------- SCTP Statistics --------------------------------------------------------------------------\n");
+	printf("|  Total packets RX/TX %u\n", hs->number_of_packets);
+	printf("---------------------------------------------------------------------------------------------------------------------------------------\n");
+	printf("|   Source IP   |PortA|    Dest. IP   |PortB|  DATA  |  SACK  |  HBEAT |HBEATACK|  INIT  | INITACK| COOKIE |COOKIACK| ABORT  |  ERROR |\n");
+	printf("---------------------------------------------------------------------------------------------------------------------------------------\n");
+	
+	for(tmp = list ; tmp ; tmp=tmp->next) {
+		printf("|%15s|%5u|%15s|%5u|%8u|%8u|%8u|%8u|%8u|%8u|%8u|%8u|%8u|%8u|\n",
+		       address_to_str(&tmp->src),tmp->sport,
+		       address_to_str(&tmp->dst),tmp->dport,
+		       tmp->chunk_count[SCTP_DATA_CHUNK_ID],
+		       tmp->chunk_count[SCTP_SACK_CHUNK_ID],
+		       tmp->chunk_count[SCTP_HEARTBEAT_CHUNK_ID],
+		       tmp->chunk_count[SCTP_HEARTBEAT_ACK_CHUNK_ID],
+		       tmp->chunk_count[SCTP_INIT_CHUNK_ID],
+		       tmp->chunk_count[SCTP_INIT_ACK_CHUNK_ID],
+		       tmp->chunk_count[SCTP_COOKIE_ECHO_CHUNK_ID],
+		       tmp->chunk_count[SCTP_COOKIE_ACK_CHUNK_ID],
+		       tmp->chunk_count[SCTP_ABORT_CHUNK_ID],
+		       tmp->chunk_count[SCTP_ERROR_CHUNK_ID]);
+	}
+	printf("---------------------------------------------------------------------------------------------------------------------------------------\n");
+}
+
+
+static void
+sctpstat_init(char *optarg)
+{
+	sctpstat_t *hs;
+	char *filter=NULL;
+	GString *error_string;
+
+	if(!strncmp(optarg,"sctp,stat,",11)){
+		filter=optarg+11;
+	} else {
+		filter=g_malloc(1);
+		*filter='\0';
+	}
+
+	hs = g_malloc(sizeof(sctpstat_t));
+	hs->filter=g_malloc(strlen(filter)+1);
+	hs->ep_list = NULL;
+	hs->number_of_packets = 0;
+	strcpy(hs->filter, filter);
+
+	sctpstat_reset(hs);
+
+	error_string=register_tap_listener("sctp", hs, filter, NULL, sctpstat_packet, sctpstat_draw);
+	if(error_string){
+		/* error, we failed to attach to the tap. clean up */
+		g_free(hs->filter);
+		g_free(hs);
+
+		fprintf(stderr, "tethereal: Couldn't register sctp,stat tap: %s\n",
+		    error_string->str);
+		g_string_free(error_string, TRUE);
+		exit(1);
+	}
+}
+
+
+void
+register_tap_listener_sctpstat(void)
+{
+	register_ethereal_tap("sctp,stat", sctpstat_init);
+}