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 "register.h"
  43 #include <epan/dissectors/packet-sctp.h>
  44 #include <epan/to_str.h>
  45
  46 typedef struct sctp_ep {
  47         struct sctp_ep* next;
  48         address src;
  49         address dst;
  50         guint16 sport;
  51         guint16 dport;
  52         guint32 chunk_count[256];
  53 } sctp_ep_t;
  54
  55
  56 /* used to keep track of the statistics for an entire program interface */
  57 typedef struct _sctpstat_t {
  58         char*      filter;
  59         guint32    number_of_packets;
  60         sctp_ep_t* ep_list;
  61 } sctpstat_t;
  62
  63
  64 #define SCTP_DATA_CHUNK_ID               0
  65 #define SCTP_INIT_CHUNK_ID               1
  66 #define SCTP_INIT_ACK_CHUNK_ID           2
  67 #define SCTP_SACK_CHUNK_ID               3
  68 #define SCTP_HEARTBEAT_CHUNK_ID          4
  69 #define SCTP_HEARTBEAT_ACK_CHUNK_ID      5
  70 #define SCTP_ABORT_CHUNK_ID              6
  71 #define SCTP_SHUTDOWN_CHUNK_ID           7
  72 #define SCTP_SHUTDOWN_ACK_CHUNK_ID       8
  73 #define SCTP_ERROR_CHUNK_ID              9
  74 #define SCTP_COOKIE_ECHO_CHUNK_ID       10
  75 #define SCTP_COOKIE_ACK_CHUNK_ID        11
  76 #define SCTP_ECNE_CHUNK_ID              12
  77 #define SCTP_CWR_CHUNK_ID               13
  78 #define SCTP_SHUTDOWN_COMPLETE_CHUNK_ID 14
  79 #define SCTP_AUTH_CHUNK_ID            0x16
  80 #define SCTP_ASCONF_ACK_CHUNK_ID      0x80
  81 #define SCTP_PKTDROP_CHUNK_ID         0x81
  82 #define SCTP_FORWARD_TSN_CHUNK_ID     0xC0
  83 #define SCTP_ASCONF_CHUNK_ID          0xC1
  84 #define SCTP_IETF_EXT                 0xFF
  85
  86 #define CHUNK_TYPE_OFFSET 0
  87 #define CHUNK_TYPE(x)(tvb_get_guint8((x), CHUNK_TYPE_OFFSET))
  88
  89 static void
  90 sctpstat_reset(void *phs)
  91 {
  92         sctpstat_t* sctp_stat = (sctpstat_t *)phs;
  93         sctp_ep_t* list = (sctp_ep_t*)sctp_stat->ep_list;
  94         sctp_ep_t* tmp = NULL;
  95         guint16 chunk_type;
  96
  97         if(!list)
  98                 return;
  99
 100         for(tmp = list; tmp ; tmp=tmp->next)
 101                 for(chunk_type = 0; chunk_type < 256; chunk_type++)
 102                         tmp->chunk_count[chunk_type] = 0;
 103
 104         sctp_stat->number_of_packets = 0;
 105 }
 106
 107
 108 static sctp_ep_t*
 109 alloc_sctp_ep(const struct _sctp_info *si)
 110 {
 111         sctp_ep_t* ep;
 112         guint16 chunk_type;
 113
 114         if(!si)
 115                 return NULL;
 116
 117         if (!(ep = g_malloc(sizeof(sctp_ep_t))))
 118                 return NULL;
 119
 120         COPY_ADDRESS(&ep->src,&si->ip_src);
 121         COPY_ADDRESS(&ep->dst,&si->ip_dst);
 122         ep->sport = si->sport;
 123         ep->dport = si->dport;
 124         ep->next = NULL;
 125         for(chunk_type = 0; chunk_type < 256; chunk_type++)
 126                 ep->chunk_count[chunk_type] = 0;
 127         return ep;
 128 }
 129
 130
 131
 132
 133 static int
 134 sctpstat_packet(void *phs, packet_info *pinfo _U_, epan_dissect_t *edt _U_, const void *phi)
 135 {
 136
 137         sctpstat_t *hs=(sctpstat_t *)phs;
 138         sctp_ep_t *tmp = NULL, *te = NULL;
 139         const struct _sctp_info *si = (const struct _sctp_info *) phi;
 140         guint32 tvb_number;
 141         guint8 chunk_type;
 142
 143         if (!hs)
 144                 return (0);
 145
 146         hs->number_of_packets++;
 147
 148         if(!hs->ep_list) {
 149                 hs->ep_list = alloc_sctp_ep(si);
 150                 te = hs->ep_list;
 151         } else {
 152                 for(tmp=hs->ep_list ; tmp ; tmp=tmp->next)
 153                 {
 154                         if((!CMP_ADDRESS(&tmp->src,&si->ip_src)) &&
 155                            (!CMP_ADDRESS(&tmp->dst,&si->ip_dst)) &&
 156                            (tmp->sport == si->sport) &&
 157                            (tmp->dport == si->dport))
 158                         {
 159                                 te = tmp;
 160                                 break;
 161                         }
 162                 }
 163                 if(!te) {
 164                         if ((te = alloc_sctp_ep(si))) {
 165                                 te->next = hs->ep_list;
 166                                 hs->ep_list = te;
 167                         }
 168                 }
 169         }
 170
 171         if(!te)
 172                 return (0);
 173
 174
 175         if (si->number_of_tvbs > 0) {
 176                 chunk_type = CHUNK_TYPE(si->tvb[0]);
 177                 if ((chunk_type == SCTP_INIT_CHUNK_ID) ||
 178                     (chunk_type == SCTP_INIT_ACK_CHUNK_ID)) {
 179                         te->chunk_count[chunk_type]++;
 180                 } else {
 181                         for(tvb_number = 0; tvb_number < si->number_of_tvbs; tvb_number++)
 182                                 te->chunk_count[CHUNK_TYPE(si->tvb[tvb_number])]++;
 183                 }
 184         }
 185         return (1);
 186 }
 187
 188
 189 static void
 190 sctpstat_draw(void *phs)
 191 {
 192         sctpstat_t *hs=(sctpstat_t *)phs;
 193         sctp_ep_t* list = hs->ep_list, *tmp;
 194
 195         printf("-------------------------------------------- SCTP Statistics --------------------------------------------------------------------------\n");
 196         printf("|  Total packets RX/TX %u\n", hs->number_of_packets);
 197         printf("---------------------------------------------------------------------------------------------------------------------------------------\n");
 198         printf("|   Source IP   |PortA|    Dest. IP   |PortB|  DATA  |  SACK  |  HBEAT |HBEATACK|  INIT  | INITACK| COOKIE |COOKIACK| ABORT  |  ERROR |\n");
 199         printf("---------------------------------------------------------------------------------------------------------------------------------------\n");
 200
 201         for(tmp = list ; tmp ; tmp=tmp->next) {
 202                 printf("|%15s|%5u|%15s|%5u|%8u|%8u|%8u|%8u|%8u|%8u|%8u|%8u|%8u|%8u|\n",
 203                        ep_address_to_str(&tmp->src),tmp->sport,
 204                        ep_address_to_str(&tmp->dst),tmp->dport,
 205                        tmp->chunk_count[SCTP_DATA_CHUNK_ID],
 206                        tmp->chunk_count[SCTP_SACK_CHUNK_ID],
 207                        tmp->chunk_count[SCTP_HEARTBEAT_CHUNK_ID],
 208                        tmp->chunk_count[SCTP_HEARTBEAT_ACK_CHUNK_ID],
 209                        tmp->chunk_count[SCTP_INIT_CHUNK_ID],
 210                        tmp->chunk_count[SCTP_INIT_ACK_CHUNK_ID],
 211                        tmp->chunk_count[SCTP_COOKIE_ECHO_CHUNK_ID],
 212                        tmp->chunk_count[SCTP_COOKIE_ACK_CHUNK_ID],
 213                        tmp->chunk_count[SCTP_ABORT_CHUNK_ID],
 214                        tmp->chunk_count[SCTP_ERROR_CHUNK_ID]);
 215         }
 216         printf("---------------------------------------------------------------------------------------------------------------------------------------\n");
 217 }
 218
 219
 220 static void
 221 sctpstat_init(const char *optarg, void* userdata _U_)
 222 {
 223         sctpstat_t *hs;
 224         GString *error_string;
 225
 226         hs = (sctpstat_t *)g_malloc(sizeof(sctpstat_t));
 227         if(!strncmp(optarg,"sctp,stat,",11)){
 228                 hs->filter=g_strdup(optarg+11);
 229         } else {
 230                 hs->filter=NULL;
 231         }
 232         hs->ep_list = NULL;
 233         hs->number_of_packets = 0;
 234
 235         sctpstat_reset(hs);
 236
 237         error_string=register_tap_listener("sctp", hs, hs->filter, 0, NULL, sctpstat_packet, sctpstat_draw);
 238         if(error_string){
 239                 /* error, we failed to attach to the tap. clean up */
 240                 g_free(hs->filter);
 241                 g_free(hs);
 242
 243                 fprintf(stderr, "tshark: Couldn't register sctp,stat tap: %s\n",
 244                     error_string->str);
 245                 g_string_free(error_string, TRUE);
 246                 exit(1);
 247         }
 248 }
 249
 250
 251 void
 252 register_tap_listener_sctpstat(void)
 253 {
 254         register_stat_cmd_arg("sctp,stat", sctpstat_init,NULL);
 255 }