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