tap-mgcpstat.c

   1 /* tap-mgcpstat.c
   2  * mgcpstat   2003 Lars Roland
   3  *
   4  * $Id$
   5  *
   6  * Ethereal - Network traffic analyzer
   7  * By Gerald Combs <gerald@ethereal.com>
   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/value_string.h"
  39 #include "stat.h"
  40 #include "register.h"
  41 #include "plugins/mgcp/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 };
  68
  69 static int
  70 mgcpstat_packet(void *pms, packet_info *pinfo, epan_dissect_t *edt _U_, const void *pmi)
  71 {
  72         mgcpstat_t *ms=(mgcpstat_t *)pms;
  73         const mgcp_info_t *mi=pmi;
  74         nstime_t delta;
  75
  76         switch (mi->mgcp_type) {
  77
  78         case MGCP_REQUEST:
  79                 if(mi->is_duplicate){
  80                         /* Duplicate is ignored */
  81                         ms->req_dup_num++;
  82                         return 0;
  83                 }
  84                 else {
  85                         ms->open_req_num++;
  86                         return 0;
  87                 }
  88         break;
  89
  90         case MGCP_RESPONSE:
  91                 if(mi->is_duplicate){
  92                         /* Duplicate is ignored */
  93                         ms->rsp_dup_num++;
  94                         return 0;
  95                 }
  96                 else if (!mi->request_available) {
  97                         /* no request was seen */
  98                         ms->disc_rsp_num++;
  99                         return 0;
 100                 }
 101                 else {
 102                         ms->open_req_num--;
 103                         /* calculate time delta between request and response */
 104                         delta.secs=pinfo->fd->abs_secs-mi->req_time.secs;
 105                         delta.nsecs=pinfo->fd->abs_usecs*1000-mi->req_time.nsecs;
 106                         if(delta.nsecs<0){
 107                                 delta.nsecs+=1000000000;
 108                                 delta.secs--;
 109                         }
 110
 111                         time_stat_update(&(ms->rtd[0]),&delta, pinfo);
 112
 113                         if (strncasecmp(mi->code, "EPCF", 4) == 0 ) {
 114                                 time_stat_update(&(ms->rtd[1]),&delta, pinfo);
 115                         }
 116                         else if (strncasecmp(mi->code, "CRCX", 4) == 0 ) {
 117                                 time_stat_update(&(ms->rtd[2]),&delta, pinfo);
 118                         }
 119                         else if (strncasecmp(mi->code, "MDCX", 4) == 0 ) {
 120                                 time_stat_update(&(ms->rtd[3]),&delta, pinfo);
 121                         }
 122                         else if (strncasecmp(mi->code, "DLCX", 4) == 0 ) {
 123                                 time_stat_update(&(ms->rtd[4]),&delta, pinfo);
 124                         }
 125                         else if (strncasecmp(mi->code, "RQNT", 4) == 0 ) {
 126                                 time_stat_update(&(ms->rtd[5]),&delta, pinfo);
 127                         }
 128                         else if (strncasecmp(mi->code, "NTFY", 4) == 0 ) {
 129                                 time_stat_update(&(ms->rtd[6]),&delta, pinfo);
 130                         }
 131                         else if (strncasecmp(mi->code, "AUEP", 4) == 0 ) {
 132                                 time_stat_update(&(ms->rtd[7]),&delta, pinfo);
 133                         }
 134                         else if (strncasecmp(mi->code, "AUCX", 4) == 0 ) {
 135                                 time_stat_update(&(ms->rtd[8]),&delta, pinfo);
 136                         }
 137                         else if (strncasecmp(mi->code, "RSIP", 4) == 0 ) {
 138                                 time_stat_update(&(ms->rtd[9]),&delta, pinfo);
 139                         }
 140                         else {
 141                                 time_stat_update(&(ms->rtd[10]),&delta, pinfo);
 142                         }
 143
 144                         return 1;
 145                 }
 146         break;
 147
 148         default:
 149                 return 0;
 150         break;
 151         }
 152 }
 153
 154 static void
 155 mgcpstat_draw(void *pms)
 156 {
 157         mgcpstat_t *ms=(mgcpstat_t *)pms;
 158         int i;
 159
 160         /* printing results */
 161         printf("\n");
 162         printf("=====================================================================================================\n");
 163         printf("MGCP Response Time Delay (RTD) Statistics:\n");
 164         printf("Filter for statistics: %s\n",ms->filter?ms->filter:"");
 165         printf("Duplicate requests: %u\n",ms->req_dup_num);
 166         printf("Duplicate responses: %u\n",ms->rsp_dup_num);
 167         printf("Open requests: %u\n",ms->open_req_num);
 168         printf("Discarded responses: %u\n",ms->disc_rsp_num);
 169         printf("Type    | Messages   |    Min RTD    |    Max RTD    |    Avg RTD    | Min in Frame | Max in Frame |\n");
 170         for(i=0;i<NUM_TIMESTATS;i++) {
 171                 if(ms->rtd[i].num) {
 172                         printf("%s | %7u    | %8.2f msec | %8.2f msec | %8.2f msec |  %10u  |  %10u  |\n",
 173                                 val_to_str(i,mgcp_mesage_type,"Other  "),ms->rtd[i].num,
 174                                 nstime_to_msec(&(ms->rtd[i].min)), nstime_to_msec(&(ms->rtd[i].max)),
 175                                 get_average(&(ms->rtd[i].tot), ms->rtd[i].num),
 176                                 ms->rtd[i].min_num, ms->rtd[i].max_num
 177                         );
 178                 }
 179         }
 180         printf("=====================================================================================================\n");
 181 }
 182
 183
 184 static void
 185 mgcpstat_init(const char *optarg)
 186 {
 187         mgcpstat_t *ms;
 188         int i;
 189         const char *filter=NULL;
 190         GString *error_string;
 191
 192         if(!strncmp(optarg,"mgcp,rtd,",9)){
 193                 filter=optarg+9;
 194         } else {
 195                 filter="";
 196         }
 197
 198         ms=g_malloc(sizeof(mgcpstat_t));
 199         ms->filter=g_malloc(strlen(filter)+1);
 200         strcpy(ms->filter, filter);
 201
 202         for(i=0;i<NUM_TIMESTATS;i++) {
 203                 ms->rtd[i].num=0;
 204                 ms->rtd[i].min_num=0;
 205                 ms->rtd[i].max_num=0;
 206                 ms->rtd[i].min.secs=0;
 207                 ms->rtd[i].min.nsecs=0;
 208                 ms->rtd[i].max.secs=0;
 209                 ms->rtd[i].max.nsecs=0;
 210                 ms->rtd[i].tot.secs=0;
 211                 ms->rtd[i].tot.nsecs=0;
 212         }
 213
 214         ms->open_req_num=0;
 215         ms->disc_rsp_num=0;
 216         ms->req_dup_num=0;
 217         ms->rsp_dup_num=0;
 218
 219         error_string=register_tap_listener("mgcp", ms, filter, NULL, mgcpstat_packet, mgcpstat_draw);
 220         if(error_string){
 221                 /* error, we failed to attach to the tap. clean up */
 222                 g_free(ms->filter);
 223                 g_free(ms);
 224
 225                 fprintf(stderr, "tethereal: Couldn't register mgcp,rtd tap: %s\n",
 226                     error_string->str);
 227                 g_string_free(error_string, TRUE);
 228                 exit(1);
 229         }
 230 }
 231
 232
 233 void
 234 register_tap_listener_mgcpstat(void)
 235 {
 236         /* We don't register this tap, if we don't have the mgcp plugin loaded.*/
 237         if (find_tap_id("mgcp")) {
 238                 register_stat_cmd_arg("mgcp,rtd", mgcpstat_init);
 239         }
 240 }
 241