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 "register.h"
  40 #include "plugins/mgcp/packet-mgcp.h"
  41 #include "timestats.h"
  42
  43 #define NUM_TIMESTATS 11
  44
  45 /* used to keep track of the statistics for an entire program interface */
  46 typedef struct _mgcpstat_t {
  47         char *filter;
  48         timestat_t rtd[NUM_TIMESTATS];
  49         guint32 open_req_num;
  50         guint32 disc_rsp_num;
  51         guint32 req_dup_num;
  52         guint32 rsp_dup_num;
  53 } mgcpstat_t;
  54
  55 static const value_string mgcp_mesage_type[] = {
  56   {  0, "Overall"},
  57   {  1, "EPCF   "},
  58   {  2, "CRCX   "},
  59   {  3, "MDCX   "},
  60   {  4, "DLCX   "},
  61   {  5, "RQNT   "},
  62   {  6, "NTFY   "},
  63   {  7, "AUEP   "},
  64   {  8, "AUCX   "},
  65   {  9, "RSIP   "},
  66 };
  67
  68 static int
  69 mgcpstat_packet(void *pms, packet_info *pinfo, epan_dissect_t *edt _U_, const void *pmi)
  70 {
  71         mgcpstat_t *ms=(mgcpstat_t *)pms;
  72         const mgcp_info_t *mi=pmi;
  73         nstime_t delta;
  74
  75         switch (mi->mgcp_type) {
  76
  77         case MGCP_REQUEST:
  78                 if(mi->is_duplicate){
  79                         /* Duplicate is ignored */
  80                         ms->req_dup_num++;
  81                         return 0;
  82                 }
  83                 else {
  84                         ms->open_req_num++;
  85                         return 0;
  86                 }
  87         break;
  88
  89         case MGCP_RESPONSE:
  90                 if(mi->is_duplicate){
  91                         /* Duplicate is ignored */
  92                         ms->rsp_dup_num++;
  93                         return 0;
  94                 }
  95                 else if (!mi->request_available) {
  96                         /* no request was seen */
  97                         ms->disc_rsp_num++;
  98                         return 0;
  99                 }
 100                 else {
 101                         ms->open_req_num--;
 102                         /* calculate time delta between request and response */
 103                         delta.secs=pinfo->fd->abs_secs-mi->req_time.secs;
 104                         delta.nsecs=pinfo->fd->abs_usecs*1000-mi->req_time.nsecs;
 105                         if(delta.nsecs<0){
 106                                 delta.nsecs+=1000000000;
 107                                 delta.secs--;
 108                         }
 109
 110                         time_stat_update(&(ms->rtd[0]),&delta, pinfo);
 111
 112                         if (strncasecmp(mi->code, "EPCF", 4) == 0 ) {
 113                                 time_stat_update(&(ms->rtd[1]),&delta, pinfo);
 114                         }
 115                         else if (strncasecmp(mi->code, "CRCX", 4) == 0 ) {
 116                                 time_stat_update(&(ms->rtd[2]),&delta, pinfo);
 117                         }
 118                         else if (strncasecmp(mi->code, "MDCX", 4) == 0 ) {
 119                                 time_stat_update(&(ms->rtd[3]),&delta, pinfo);
 120                         }
 121                         else if (strncasecmp(mi->code, "DLCX", 4) == 0 ) {
 122                                 time_stat_update(&(ms->rtd[4]),&delta, pinfo);
 123                         }
 124                         else if (strncasecmp(mi->code, "RQNT", 4) == 0 ) {
 125                                 time_stat_update(&(ms->rtd[5]),&delta, pinfo);
 126                         }
 127                         else if (strncasecmp(mi->code, "NTFY", 4) == 0 ) {
 128                                 time_stat_update(&(ms->rtd[6]),&delta, pinfo);
 129                         }
 130                         else if (strncasecmp(mi->code, "AUEP", 4) == 0 ) {
 131                                 time_stat_update(&(ms->rtd[7]),&delta, pinfo);
 132                         }
 133                         else if (strncasecmp(mi->code, "AUCX", 4) == 0 ) {
 134                                 time_stat_update(&(ms->rtd[8]),&delta, pinfo);
 135                         }
 136                         else if (strncasecmp(mi->code, "RSIP", 4) == 0 ) {
 137                                 time_stat_update(&(ms->rtd[9]),&delta, pinfo);
 138                         }
 139                         else {
 140                                 time_stat_update(&(ms->rtd[10]),&delta, pinfo);
 141                         }
 142
 143                         return 1;
 144                 }
 145         break;
 146
 147         default:
 148                 return 0;
 149         break;
 150         }
 151 }
 152
 153 static void
 154 mgcpstat_draw(void *pms)
 155 {
 156         mgcpstat_t *ms=(mgcpstat_t *)pms;
 157         int i;
 158
 159         /* printing results */
 160         printf("\n");
 161         printf("=====================================================================================================\n");
 162         printf("MGCP Response Time Delay (RTD) Statistics:\n");
 163         printf("Filter for statistics: %s\n",ms->filter?ms->filter:"");
 164         printf("Duplicate requests: %u\n",ms->req_dup_num);
 165         printf("Duplicate responses: %u\n",ms->rsp_dup_num);
 166         printf("Open requests: %u\n",ms->open_req_num);
 167         printf("Discarded responses: %u\n",ms->disc_rsp_num);
 168         printf("Type    | Messages   |    Min RTD    |    Max RTD    |    Avg RTD    | Min in Frame | Max in Frame |\n");
 169         for(i=0;i<NUM_TIMESTATS;i++) {
 170                 if(ms->rtd[i].num) {
 171                         printf("%s | %7u    | %8.2f msec | %8.2f msec | %8.2f msec |  %10u  |  %10u  |\n",
 172                                 val_to_str(i,mgcp_mesage_type,"Other  "),ms->rtd[i].num,
 173                                 nstime_to_msec(&(ms->rtd[i].min)), nstime_to_msec(&(ms->rtd[i].max)),
 174                                 get_average(&(ms->rtd[i].tot), ms->rtd[i].num),
 175                                 ms->rtd[i].min_num, ms->rtd[i].max_num
 176                         );
 177                 }
 178         }
 179         printf("=====================================================================================================\n");
 180 }
 181
 182
 183 static void
 184 mgcpstat_init(char *optarg)
 185 {
 186         mgcpstat_t *ms;
 187         int i;
 188         char *filter=NULL;
 189         GString *error_string;
 190
 191         if(!strncmp(optarg,"mgcp,rtd,",9)){
 192                 filter=optarg+9;
 193         } else {
 194                 filter=g_malloc(1);
 195                 *filter='\0';
 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_tap_listener_cmd_arg("mgcp,rtd", mgcpstat_init);
 239         }
 240 }
 241