tap-sctpchunkstat.c

   1 /* tap_sctpchunkstat.c
   2  * SCTP chunk counter for wireshark
   3  * Copyright 2005 Oleg Terletsky <oleg.terletsky@comverse.com>
   4  *
   5  * $Id$
   6  *
   7  * Wireshark - Network traffic analyzer
   8  * By Gerald Combs <gerald@wireshark.org>
   9  * Copyright 1998 Gerald Combs
  10  *
  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.
  15  *
  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.
  20  *
  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.
  24  */
  25
  26 #ifdef HAVE_CONFIG_H
  27 # include "config.h"
  28 #endif
  29
  30 #include <stdio.h>
  31
  32 #ifdef HAVE_SYS_TYPES_H
  33 # include <sys/types.h>
  34 #endif
  35
  36 #include <string.h>
  37 #include "epan/packet_info.h"
  38 #include "epan/addr_resolv.h"
  39 #include <epan/tap.h>
  40 #include <epan/stat_cmd_args.h>
  41 #include "epan/value_string.h"
  42 #include <epan/dissectors/packet-sctp.h>
  43 #include <epan/to_str.h>
  44
  45 typedef struct sctp_ep {
  46         struct sctp_ep* next;
  47         address src;
  48         address dst;
  49         guint16 sport;
  50         guint16 dport;
  51         guint32 chunk_count[256];
  52 } sctp_ep_t;
  53
  54
  55 /* used to keep track of the statistics for an entire program interface */
  56 typedef struct _sctpstat_t {
  57         char*      filter;
  58         guint32    number_of_packets;
  59         sctp_ep_t* ep_list;
  60 } sctpstat_t;
  61
  62
  63 #define SCTP_DATA_CHUNK_ID               0
  64 #define SCTP_INIT_CHUNK_ID               1
  65 #define SCTP_INIT_ACK_CHUNK_ID           2
  66 #define SCTP_SACK_CHUNK_ID               3
  67 #define SCTP_HEARTBEAT_CHUNK_ID          4
  68 #define SCTP_HEARTBEAT_ACK_CHUNK_ID      5
  69 #define SCTP_ABORT_CHUNK_ID              6
  70 #define SCTP_SHUTDOWN_CHUNK_ID           7
  71 #define SCTP_SHUTDOWN_ACK_CHUNK_ID       8
  72 #define SCTP_ERROR_CHUNK_ID              9
  73 #define SCTP_COOKIE_ECHO_CHUNK_ID       10
  74 #define SCTP_COOKIE_ACK_CHUNK_ID        11
  75 #define SCTP_ECNE_CHUNK_ID              12
  76 #define SCTP_CWR_CHUNK_ID               13
  77 #define SCTP_SHUTDOWN_COMPLETE_CHUNK_ID 14
  78 #define SCTP_AUTH_CHUNK_ID            0x16
  79 #define SCTP_ASCONF_ACK_CHUNK_ID      0x80
  80 #define SCTP_PKTDROP_CHUNK_ID         0x81
  81 #define SCTP_FORWARD_TSN_CHUNK_ID     0xC0
  82 #define SCTP_ASCONF_CHUNK_ID          0xC1
  83 #define SCTP_IETF_EXT                 0xFF
  84
  85 #define CHUNK_TYPE_OFFSET 0
  86 #define CHUNK_TYPE(x)(tvb_get_guint8((x), CHUNK_TYPE_OFFSET))
  87
  88 static void
  89 sctpstat_reset(void *phs)
  90 {
  91         sctpstat_t* sctp_stat = (sctpstat_t *)phs;
  92         sctp_ep_t* list = (sctp_ep_t*)sctp_stat->ep_list;
  93         sctp_ep_t* tmp = NULL;
  94         guint16 chunk_type;
  95
  96         if(!list)
  97                 return;
  98
  99         for(tmp = list; tmp ; tmp=tmp->next)
 100                 for(chunk_type = 0; chunk_type < 256; chunk_type++)
 101                         tmp->chunk_count[chunk_type] = 0;
 102
 103         sctp_stat->number_of_packets = 0;
 104 }
 105
 106
 107 static sctp_ep_t*
 108 alloc_sctp_ep(const struct _sctp_info *si)
 109 {
 110         sctp_ep_t* ep;
 111         guint16 chunk_type;
 112
 113         if(!si)
 114                 return NULL;
 115
 116         if (!(ep = g_malloc(sizeof(sctp_ep_t))))
 117                 return NULL;
 118
 119         COPY_ADDRESS(&ep->src,&si->ip_src);
 120         COPY_ADDRESS(&ep->dst,&si->ip_dst);
 121         ep->sport = si->sport;
 122         ep->dport = si->dport;
 123         ep->next = NULL;
 124         for(chunk_type = 0; chunk_type < 256; chunk_type++)
 125                 ep->chunk_count[chunk_type] = 0;
 126         return ep;
 127 }
 128
 129
 130
 131
 132 static int
 133 sctpstat_packet(void *phs, packet_info *pinfo _U_, epan_dissect_t *edt _U_, const void *phi)
 134 {
 135
 136         sctpstat_t *hs=(sctpstat_t *)phs;
 137         sctp_ep_t *tmp = NULL, *te = NULL;
 138         const struct _sctp_info *si = (const struct _sctp_info *) phi;
 139         guint32 tvb_number;
 140         guint8 chunk_type;
 141
 142         if (!hs)
 143                 return (0);
 144
 145         hs->number_of_packets++;
 146
 147         if(!hs->ep_list) {
 148                 hs->ep_list = alloc_sctp_ep(si);
 149                 te = hs->ep_list;
 150         } else {
 151                 for(tmp=hs->ep_list ; tmp ; tmp=tmp->next)
 152                 {
 153                         if((!CMP_ADDRESS(&tmp->src,&si->ip_src)) &&
 154                            (!CMP_ADDRESS(&tmp->dst,&si->ip_dst)) &&
 155                            (tmp->sport == si->sport) &&
 156                            (tmp->dport == si->dport))
 157                         {
 158                                 te = tmp;
 159                                 break;
 160                         }
 161                 }
 162                 if(!te) {
 163                         if ((te = alloc_sctp_ep(si))) {
 164                                 te->next = hs->ep_list;
 165                                 hs->ep_list = te;
 166                         }
 167                 }
 168         }
 169
 170         if(!te)
 171                 return (0);
 172
 173
 174         if (si->number_of_tvbs > 0) {
 175                 chunk_type = CHUNK_TYPE(si->tvb[0]);
 176                 if ((chunk_type == SCTP_INIT_CHUNK_ID) ||
 177                     (chunk_type == SCTP_INIT_ACK_CHUNK_ID)) {
 178                         te->chunk_count[chunk_type]++;
 179                 } else {
 180                         for(tvb_number = 0; tvb_number < si->number_of_tvbs; tvb_number++)
 181                                 te->chunk_count[CHUNK_TYPE(si->tvb[tvb_number])]++;
 182                 }
 183         }
 184         return (1);
 185 }
 186
 187
 188 static void
 189 sctpstat_draw(void *phs)
 190 {
 191         sctpstat_t *hs=(sctpstat_t *)phs;
 192         sctp_ep_t* list = hs->ep_list, *tmp;
 193
 194         printf("-------------------------------------------- SCTP Statistics --------------------------------------------------------------------------\n");
 195         printf("|  Total packets RX/TX %u\n", hs->number_of_packets);
 196         printf("---------------------------------------------------------------------------------------------------------------------------------------\n");
 197         printf("|   Source IP   |PortA|    Dest. IP   |PortB|  DATA  |  SACK  |  HBEAT |HBEATACK|  INIT  | INITACK| COOKIE |COOKIACK| ABORT  |  ERROR |\n");
 198         printf("---------------------------------------------------------------------------------------------------------------------------------------\n");
 199
 200         for(tmp = list ; tmp ; tmp=tmp->next) {
 201                 printf("|%15s|%5u|%15s|%5u|%8u|%8u|%8u|%8u|%8u|%8u|%8u|%8u|%8u|%8u|\n",
 202                        ep_address_to_str(&tmp->src),tmp->sport,
 203                        ep_address_to_str(&tmp->dst),tmp->dport,
 204                        tmp->chunk_count[SCTP_DATA_CHUNK_ID],
 205                        tmp->chunk_count[SCTP_SACK_CHUNK_ID],
 206                        tmp->chunk_count[SCTP_HEARTBEAT_CHUNK_ID],
 207                        tmp->chunk_count[SCTP_HEARTBEAT_ACK_CHUNK_ID],
 208                        tmp->chunk_count[SCTP_INIT_CHUNK_ID],
 209                        tmp->chunk_count[SCTP_INIT_ACK_CHUNK_ID],
 210                        tmp->chunk_count[SCTP_COOKIE_ECHO_CHUNK_ID],
 211                        tmp->chunk_count[SCTP_COOKIE_ACK_CHUNK_ID],
 212                        tmp->chunk_count[SCTP_ABORT_CHUNK_ID],
 213                        tmp->chunk_count[SCTP_ERROR_CHUNK_ID]);
 214         }
 215         printf("---------------------------------------------------------------------------------------------------------------------------------------\n");
 216 }
 217
 218
 219 static void
 220 sctpstat_init(const char *optarg, void* userdata _U_)
 221 {
 222         sctpstat_t *hs;
 223         GString *error_string;
 224
 225         hs = (sctpstat_t *)g_malloc(sizeof(sctpstat_t));
 226         if(!strncmp(optarg,"sctp,stat,",11)){
 227                 hs->filter=g_strdup(optarg+11);
 228         } else {
 229                 hs->filter=NULL;
 230         }
 231         hs->ep_list = NULL;
 232         hs->number_of_packets = 0;
 233
 234         sctpstat_reset(hs);
 235
 236         error_string=register_tap_listener("sctp", hs, hs->filter, 0, NULL, sctpstat_packet, sctpstat_draw);
 237         if(error_string){
 238                 /* error, we failed to attach to the tap. clean up */
 239                 g_free(hs->filter);
 240                 g_free(hs);
 241
 242                 fprintf(stderr, "tshark: Couldn't register sctp,stat tap: %s\n",
 243                     error_string->str);
 244                 g_string_free(error_string, TRUE);
 245                 exit(1);
 246         }
 247 }
 248
 249
 250 void
 251 register_tap_listener_sctpstat(void)
 252 {
 253         register_stat_cmd_arg("sctp,stat", sctpstat_init,NULL);
 254 }