tap-mgcpstat.c

   1 /* tap-mgcpstat.c
   2  * mgcpstat   2003 Lars Roland
   3  *
   4  * $Id$
   5  *
   6  * Wireshark - Network traffic analyzer
   7  * By Gerald Combs <gerald@wireshark.org>
   8  * Copyright 1998 Gerald Combs
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License
  12  * as published by the Free Software Foundation; either version 2
  13  * of the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  23  */
  24
  25 #ifdef HAVE_CONFIG_H
  26 # include "config.h"
  27 #endif
  28
  29 #include <stdio.h>
  30
  31 #ifdef HAVE_SYS_TYPES_H
  32 # include <sys/types.h>
  33 #endif
  34
  35 #include <string.h>
  36 #include "epan/packet_info.h"
  37 #include <epan/tap.h>
  38 #include <epan/stat_cmd_args.h>
  39 #include "epan/value_string.h"
  40 #include "register.h"
  41 #include "epan/dissectors/packet-mgcp.h"
  42 #include "timestats.h"
  43
  44 #define NUM_TIMESTATS 11
  45
  46 /* used to keep track of the statistics for an entire program interface */
  47 typedef struct _mgcpstat_t {
  48         char *filter;
  49         timestat_t rtd[NUM_TIMESTATS];
  50         guint32 open_req_num;
  51         guint32 disc_rsp_num;
  52         guint32 req_dup_num;
  53         guint32 rsp_dup_num;
  54 } mgcpstat_t;
  55
  56 static const value_string mgcp_mesage_type[] = {
  57   {  0, "Overall"},
  58   {  1, "EPCF   "},
  59   {  2, "CRCX   "},
  60   {  3, "MDCX   "},
  61   {  4, "DLCX   "},
  62   {  5, "RQNT   "},
  63   {  6, "NTFY   "},
  64   {  7, "AUEP   "},
  65   {  8, "AUCX   "},
  66   {  9, "RSIP   "},
  67   {  0, NULL}
  68 };
  69
  70 static int
  71 mgcpstat_packet(void *pms, packet_info *pinfo, epan_dissect_t *edt _U_, const void *pmi)
  72 {
  73         mgcpstat_t *ms=(mgcpstat_t *)pms;
  74         const mgcp_info_t *mi=pmi;
  75         nstime_t delta;
  76         int ret = 0;
  77
  78         switch (mi->mgcp_type) {
  79
  80         case MGCP_REQUEST:
  81                 if(mi->is_duplicate){
  82                         /* Duplicate is ignored */
  83                         ms->req_dup_num++;
  84                 }
  85                 else {
  86                         ms->open_req_num++;
  87                 }
  88                 break;
  89
  90         case MGCP_RESPONSE:
  91                 if(mi->is_duplicate){
  92                         /* Duplicate is ignored */
  93                         ms->rsp_dup_num++;
  94                 }
  95                 else if (!mi->request_available) {
  96                         /* no request was seen */
  97                         ms->disc_rsp_num++;
  98                 }
  99                 else {
 100                         ms->open_req_num--;
 101                         /* calculate time delta between request and response */
 102                         nstime_delta(&delta, &pinfo->fd->abs_ts, &mi->req_time);
 103
 104                         time_stat_update(&(ms->rtd[0]),&delta, pinfo);
 105
 106                         if (g_ascii_strncasecmp(mi->code, "EPCF", 4) == 0 ) {
 107                                 time_stat_update(&(ms->rtd[1]),&delta, pinfo);
 108                         }
 109                         else if (g_ascii_strncasecmp(mi->code, "CRCX", 4) == 0 ) {
 110                                 time_stat_update(&(ms->rtd[2]),&delta, pinfo);
 111                         }
 112                         else if (g_ascii_strncasecmp(mi->code, "MDCX", 4) == 0 ) {
 113                                 time_stat_update(&(ms->rtd[3]),&delta, pinfo);
 114                         }
 115                         else if (g_ascii_strncasecmp(mi->code, "DLCX", 4) == 0 ) {
 116                                 time_stat_update(&(ms->rtd[4]),&delta, pinfo);
 117                         }
 118                         else if (g_ascii_strncasecmp(mi->code, "RQNT", 4) == 0 ) {
 119                                 time_stat_update(&(ms->rtd[5]),&delta, pinfo);
 120                         }
 121                         else if (g_ascii_strncasecmp(mi->code, "NTFY", 4) == 0 ) {
 122                                 time_stat_update(&(ms->rtd[6]),&delta, pinfo);
 123                         }
 124                         else if (g_ascii_strncasecmp(mi->code, "AUEP", 4) == 0 ) {
 125                                 time_stat_update(&(ms->rtd[7]),&delta, pinfo);
 126                         }
 127                         else if (g_ascii_strncasecmp(mi->code, "AUCX", 4) == 0 ) {
 128                                 time_stat_update(&(ms->rtd[8]),&delta, pinfo);
 129                         }
 130                         else if (g_ascii_strncasecmp(mi->code, "RSIP", 4) == 0 ) {
 131                                 time_stat_update(&(ms->rtd[9]),&delta, pinfo);
 132                         }
 133                         else {
 134                                 time_stat_update(&(ms->rtd[10]),&delta, pinfo);
 135                         }
 136
 137                         ret = 1;
 138                 }
 139                 break;
 140
 141         default:
 142                 break;
 143         }
 144
 145         return ret;
 146 }
 147
 148 static void
 149 mgcpstat_draw(void *pms)
 150 {
 151         mgcpstat_t *ms=(mgcpstat_t *)pms;
 152         int i;
 153
 154         /* printing results */
 155         printf("\n");
 156         printf("=====================================================================================================\n");
 157         printf("MGCP Response Time Delay (RTD) Statistics:\n");
 158         printf("Filter for statistics: %s\n",ms->filter?ms->filter:"");
 159         printf("Duplicate requests: %u\n",ms->req_dup_num);
 160         printf("Duplicate responses: %u\n",ms->rsp_dup_num);
 161         printf("Open requests: %u\n",ms->open_req_num);
 162         printf("Discarded responses: %u\n",ms->disc_rsp_num);
 163         printf("Type    | Messages   |    Min RTD    |    Max RTD    |    Avg RTD    | Min in Frame | Max in Frame |\n");
 164         for(i=0;i<NUM_TIMESTATS;i++) {
 165                 if(ms->rtd[i].num) {
 166                         printf("%s | %7u    | %8.2f msec | %8.2f msec | %8.2f msec |  %10u  |  %10u  |\n",
 167                                 val_to_str(i,mgcp_mesage_type,"Other  "),ms->rtd[i].num,
 168                                 nstime_to_msec(&(ms->rtd[i].min)), nstime_to_msec(&(ms->rtd[i].max)),
 169                                 get_average(&(ms->rtd[i].tot), ms->rtd[i].num),
 170                                 ms->rtd[i].min_num, ms->rtd[i].max_num
 171                         );
 172                 }
 173         }
 174         printf("=====================================================================================================\n");
 175 }
 176
 177
 178 static void
 179 mgcpstat_init(const char *optarg, void* userdata _U_)
 180 {
 181         mgcpstat_t *ms;
 182         int i;
 183         const char *filter=NULL;
 184         GString *error_string;
 185
 186         if(!strncmp(optarg,"mgcp,rtd,",9)){
 187                 filter=optarg+9;
 188         } else {
 189                 filter="";
 190         }
 191
 192         ms=g_malloc(sizeof(mgcpstat_t));
 193         ms->filter=g_strdup(filter);
 194
 195         for(i=0;i<NUM_TIMESTATS;i++) {
 196                 ms->rtd[i].num=0;
 197                 ms->rtd[i].min_num=0;
 198                 ms->rtd[i].max_num=0;
 199                 ms->rtd[i].min.secs=0;
 200                 ms->rtd[i].min.nsecs=0;
 201                 ms->rtd[i].max.secs=0;
 202                 ms->rtd[i].max.nsecs=0;
 203                 ms->rtd[i].tot.secs=0;
 204                 ms->rtd[i].tot.nsecs=0;
 205         }
 206
 207         ms->open_req_num=0;
 208         ms->disc_rsp_num=0;
 209         ms->req_dup_num=0;
 210         ms->rsp_dup_num=0;
 211
 212         error_string=register_tap_listener("mgcp", ms, filter, NULL, mgcpstat_packet, mgcpstat_draw);
 213         if(error_string){
 214                 /* error, we failed to attach to the tap. clean up */
 215                 g_free(ms->filter);
 216                 g_free(ms);
 217
 218                 fprintf(stderr, "tshark: Couldn't register mgcp,rtd tap: %s\n",
 219                     error_string->str);
 220                 g_string_free(error_string, TRUE);
 221                 exit(1);
 222         }
 223 }
 224
 225
 226 void
 227 register_tap_listener_mgcpstat(void)
 228 {
 229         /* We don't register this tap, if we don't have the mgcp plugin loaded.*/
 230         if (find_tap_id("mgcp")) {
 231                 register_stat_cmd_arg("mgcp,rtd", mgcpstat_init, NULL);
 232         }
 233 }
 234