tap-sctpchunkstat.c

   1 /* tap_sctpchunkstat.c
   2  * SCTP chunk counter for ethereal
   3  * Copyright 2005 Oleg Terletsky <oleg.terletsky@comverse.com>
   4  *
   5  * $Id:$
   6  *
   7  * Ethereal - Network traffic analyzer
   8  * By Gerald Combs <gerald@ethereal.com>
   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/value_string.h"
  41 #include "register.h"
  42 #include <epan/dissectors/packet-sctp.h>
  43
  44 typedef struct sctp_ep {
  45         struct sctp_ep* next;
  46         address src;
  47         address dst;
  48         guint16 sport;
  49         guint16 dport;
  50         guint32 chunk_count[256];
  51 } sctp_ep_t;
  52
  53
  54 /* used to keep track of the statistics for an entire program interface */
  55 typedef struct _sctpstat_t {
  56         char*      filter;
  57         guint32    number_of_packets;
  58         sctp_ep_t* ep_list;
  59 } sctpstat_t;
  60
  61
  62 #define SCTP_DATA_CHUNK_ID               0
  63 #define SCTP_INIT_CHUNK_ID               1
  64 #define SCTP_INIT_ACK_CHUNK_ID           2
  65 #define SCTP_SACK_CHUNK_ID               3
  66 #define SCTP_HEARTBEAT_CHUNK_ID          4
  67 #define SCTP_HEARTBEAT_ACK_CHUNK_ID      5
  68 #define SCTP_ABORT_CHUNK_ID              6
  69 #define SCTP_SHUTDOWN_CHUNK_ID           7
  70 #define SCTP_SHUTDOWN_ACK_CHUNK_ID       8
  71 #define SCTP_ERROR_CHUNK_ID              9
  72 #define SCTP_COOKIE_ECHO_CHUNK_ID       10
  73 #define SCTP_COOKIE_ACK_CHUNK_ID        11
  74 #define SCTP_ECNE_CHUNK_ID              12
  75 #define SCTP_CWR_CHUNK_ID               13
  76 #define SCTP_SHUTDOWN_COMPLETE_CHUNK_ID 14
  77 #define SCTP_AUTH_CHUNK_ID            0x16
  78 #define SCTP_ASCONF_ACK_CHUNK_ID      0x80
  79 #define SCTP_PKTDROP_CHUNK_ID         0x81
  80 #define SCTP_FORWARD_TSN_CHUNK_ID     0xC0
  81 #define SCTP_ASCONF_CHUNK_ID          0xC1
  82 #define SCTP_IETF_EXT                 0xFF
  83
  84 #define CHUNK_TYPE_OFFSET 0
  85 #define CHUNK_TYPE(x)(tvb_get_guint8((x), CHUNK_TYPE_OFFSET))
  86
  87
  88 extern gchar* address_to_str(const address *);
  89
  90
  91 static void
  92 sctpstat_reset(void *phs)
  93 {
  94         sctpstat_t* sctp_stat = (sctpstat_t *)phs;
  95         sctp_ep_t* list = (sctp_ep_t*)sctp_stat->ep_list;
  96         sctp_ep_t* tmp = NULL;
  97         guint16 chunk_type;
  98
  99         if(!list)
 100                 return;
 101
 102         for(tmp = list; tmp ; tmp=tmp->next)
 103                 for(chunk_type = 0; chunk_type < 256; chunk_type++)
 104                         tmp->chunk_count[chunk_type] = 0;
 105
 106         sctp_stat->number_of_packets = 0;
 107 }
 108
 109
 110 sctp_ep_t* alloc_sctp_ep(struct _sctp_info *si)
 111 {
 112         sctp_ep_t* ep;
 113         guint16 chunk_type;
 114
 115         if(!si)
 116                 return NULL;
 117
 118         if (!(ep = g_malloc(sizeof(sctp_ep_t))))
 119                 return NULL;
 120
 121         COPY_ADDRESS(&ep->src,&si->ip_src);
 122         COPY_ADDRESS(&ep->dst,&si->ip_dst);
 123         ep->sport = si->sport;
 124         ep->dport = si->dport;
 125         ep->next = NULL;
 126         for(chunk_type = 0; chunk_type < 256; chunk_type++)
 127                 ep->chunk_count[chunk_type] = 0;
 128         return ep;
 129 }
 130
 131
 132
 133
 134 static int
 135 sctpstat_packet(void *phs, packet_info *pinfo _U_, epan_dissect_t *edt _U_, const void *phi)
 136 {
 137
 138         sctpstat_t *hs=(sctpstat_t *)phs;
 139         sctp_ep_t *tmp = NULL, *te = NULL;
 140         struct _sctp_info *si = (struct _sctp_info *) phi;
 141         guint32 tvb_number;
 142         guint8 chunk_type;
 143
 144         if (!hs)
 145                 return (0);
 146
 147         hs->number_of_packets++;
 148
 149         if(!hs->ep_list) {
 150                 hs->ep_list = alloc_sctp_ep(si);
 151                 te = hs->ep_list;
 152         } else {
 153                 for(tmp=hs->ep_list ; tmp ; tmp=tmp->next)
 154                 {
 155                         if((!CMP_ADDRESS(&tmp->src,&si->ip_src)) &&
 156                            (!CMP_ADDRESS(&tmp->dst,&si->ip_dst)) &&
 157                            (tmp->sport == si->sport) &&
 158                            (tmp->dport == si->dport))
 159                         {
 160                                 te = tmp;
 161                                 break;
 162                         }
 163                 }
 164                 if(!te) {
 165                         if ((te = alloc_sctp_ep(si))) {
 166                                 te->next = hs->ep_list;
 167                                 hs->ep_list = te;
 168                         }
 169                 }
 170         }
 171
 172         if(!te)
 173                 return (0);
 174
 175
 176         if (si->number_of_tvbs > 0) {
 177                 chunk_type = CHUNK_TYPE(si->tvb[0]);
 178                 if ((chunk_type == SCTP_INIT_CHUNK_ID) ||
 179                     (chunk_type == SCTP_INIT_ACK_CHUNK_ID)) {
 180                         te->chunk_count[chunk_type]++;
 181                 } else {
 182                         for(tvb_number = 0; tvb_number < si->number_of_tvbs; tvb_number++)
 183                                 te->chunk_count[CHUNK_TYPE(si->tvb[tvb_number])]++;
 184                 }
 185         }
 186         return (1);
 187 }
 188
 189
 190 static void
 191 sctpstat_draw(void *phs)
 192 {
 193         sctpstat_t *hs=(sctpstat_t *)phs;
 194         sctp_ep_t* list = hs->ep_list, *tmp;
 195
 196         printf("-------------------------------------------- SCTP Statistics --------------------------------------------------------------------------\n");
 197         printf("|  Total packets RX/TX %u\n", hs->number_of_packets);
 198         printf("---------------------------------------------------------------------------------------------------------------------------------------\n");
 199         printf("|   Source IP   |PortA|    Dest. IP   |PortB|  DATA  |  SACK  |  HBEAT |HBEATACK|  INIT  | INITACK| COOKIE |COOKIACK| ABORT  |  ERROR |\n");
 200         printf("---------------------------------------------------------------------------------------------------------------------------------------\n");
 201
 202         for(tmp = list ; tmp ; tmp=tmp->next) {
 203                 printf("|%15s|%5u|%15s|%5u|%8u|%8u|%8u|%8u|%8u|%8u|%8u|%8u|%8u|%8u|\n",
 204                        address_to_str(&tmp->src),tmp->sport,
 205                        address_to_str(&tmp->dst),tmp->dport,
 206                        tmp->chunk_count[SCTP_DATA_CHUNK_ID],
 207                        tmp->chunk_count[SCTP_SACK_CHUNK_ID],
 208                        tmp->chunk_count[SCTP_HEARTBEAT_CHUNK_ID],
 209                        tmp->chunk_count[SCTP_HEARTBEAT_ACK_CHUNK_ID],
 210                        tmp->chunk_count[SCTP_INIT_CHUNK_ID],
 211                        tmp->chunk_count[SCTP_INIT_ACK_CHUNK_ID],
 212                        tmp->chunk_count[SCTP_COOKIE_ECHO_CHUNK_ID],
 213                        tmp->chunk_count[SCTP_COOKIE_ACK_CHUNK_ID],
 214                        tmp->chunk_count[SCTP_ABORT_CHUNK_ID],
 215                        tmp->chunk_count[SCTP_ERROR_CHUNK_ID]);
 216         }
 217         printf("---------------------------------------------------------------------------------------------------------------------------------------\n");
 218 }
 219
 220
 221 static void
 222 sctpstat_init(char *optarg)
 223 {
 224         sctpstat_t *hs;
 225         char *filter=NULL;
 226         GString *error_string;
 227
 228         if(!strncmp(optarg,"sctp,stat,",11)){
 229                 filter=optarg+11;
 230         } else {
 231                 filter=g_malloc(1);
 232                 *filter='\0';
 233         }
 234
 235         hs = g_malloc(sizeof(sctpstat_t));
 236         hs->filter=g_malloc(strlen(filter)+1);
 237         hs->ep_list = NULL;
 238         hs->number_of_packets = 0;
 239         strcpy(hs->filter, filter);
 240
 241         sctpstat_reset(hs);
 242
 243         error_string=register_tap_listener("sctp", hs, filter, NULL, sctpstat_packet, sctpstat_draw);
 244         if(error_string){
 245                 /* error, we failed to attach to the tap. clean up */
 246                 g_free(hs->filter);
 247                 g_free(hs);
 248
 249                 fprintf(stderr, "tethereal: Couldn't register sctp,stat tap: %s\n",
 250                     error_string->str);
 251                 g_string_free(error_string, TRUE);
 252                 exit(1);
 253         }
 254 }
 255
 256
 257 void
 258 register_tap_listener_sctpstat(void)
 259 {
 260         register_tap_listener_cmd_arg("sctp,stat", sctpstat_init);
 261 }