tap-megaco-common.c

   1 /* megaco_stat.c
   2  * megaco-statistics for Wireshark
   3  * Copyright 2003 Lars Roland
   4  * Copyright 2008 Ericsson AB
   5  * By Balint Reczey <balint.reczey@ericsson.com>
   6  *
   7  * $Id$
   8  *
   9  * Wireshark - Network traffic analyzer
  10  * By Gerald Combs <gerald@wireshark.org>
  11  * Copyright 1998 Gerald Combs
  12  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License
  15  * as published by the Free Software Foundation; either version 2
  16  * of the License, or (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  26  */
  27
  28 #ifdef HAVE_CONFIG_H
  29 # include "config.h"
  30 #endif
  31
  32 #ifdef HAVE_SYS_TYPES_H
  33 # include <sys/types.h>
  34 #endif
  35
  36 #include <string.h>
  37
  38 #include <epan/packet_info.h>
  39 #include <epan/epan.h>
  40 #include <epan/value_string.h>
  41 #include <epan/tap.h>
  42 #include "epan/gcp.h"
  43
  44 #include "../timestats.h"
  45 #include "../file.h"
  46 #include "../globals.h"
  47 #include "../stat_menu.h"
  48
  49 #include "tap-megaco-common.h"
  50
  51 static gboolean
  52 megacostat_is_duplicate_reply(const gcp_cmd_t* cmd)
  53 {
  54         switch (cmd->type) {
  55
  56         GCP_CMD_REPLY_CASE
  57                 {
  58                         gcp_cmd_msg_t *cmd_msg;
  59                         /* cycle through commands to find same command in the transaction */
  60                         for (cmd_msg = cmd->trx->cmds; cmd_msg->cmd->msg->framenum != cmd->msg->framenum &&
  61                                         cmd_msg != NULL; cmd_msg = cmd_msg->next) {
  62                                 if (cmd_msg->cmd->type == cmd->type)
  63                                         return TRUE;
  64                         }
  65
  66                         return FALSE;
  67                 }
  68                 break;
  69         default:
  70                 return FALSE;
  71                 break;
  72         }
  73
  74
  75 }
  76
  77 static gboolean
  78 megacostat_had_request(const gcp_cmd_t* cmd)
  79 {
  80         switch (cmd->type) {
  81
  82         GCP_CMD_REPLY_CASE
  83                 {
  84                         gcp_cmd_msg_t *cmd_msg;
  85                         /* cycle through commands to find a request in the transaction */
  86                         for (cmd_msg = cmd->trx->cmds; cmd_msg->cmd->msg->framenum != cmd->msg->framenum &&
  87                                         cmd_msg != NULL; cmd_msg = cmd_msg->next) {
  88
  89                                 switch (cmd_msg->cmd->type) {
  90
  91                                 GCP_CMD_REQ_CASE
  92                                         return TRUE;
  93                                         break;
  94                                 default:
  95                                         return FALSE;
  96                                         break;
  97                                 }
  98                         }
  99
 100                         return FALSE;
 101                 }
 102                 break;
 103         default:
 104                 return FALSE;
 105                 break;
 106         }
 107 }
 108
 109 int
 110 megacostat_packet(void *pms, packet_info *pinfo, epan_dissect_t *edt _U_, const void *pmi)
 111 {
 112         megacostat_t *ms=(megacostat_t *)pms;
 113         const gcp_cmd_t *mi=(const gcp_cmd_t*)pmi;
 114         nstime_t delta;
 115         int ret = 0;
 116
 117         switch (mi->type) {
 118
 119         GCP_CMD_REQ_CASE
 120                 if(!mi->trx->initial) {
 121                         /* Track Context is probably disabled, we cannot
 122                          * measure service response time */
 123                         return 0;
 124                 }
 125
 126                 else if(mi->trx->initial->framenum != mi->msg->framenum){
 127                         /* Duplicate is ignored */
 128                         ms->req_dup_num++;
 129                 }
 130                 else {
 131                         ms->open_req_num++;
 132                 }
 133                 break;
 134
 135         GCP_CMD_REPLY_CASE
 136                 if(megacostat_is_duplicate_reply(mi)){
 137                         /* Duplicate is ignored */
 138                         ms->rsp_dup_num++;
 139                 }
 140                 else if (!megacostat_had_request(mi)) {
 141                         /* no request was seen */
 142                         ms->disc_rsp_num++;
 143                 }
 144                 else {
 145                         ms->open_req_num--;
 146                         /* calculate time delta between request and response */
 147                         nstime_delta(&delta, &pinfo->fd->abs_ts, &mi->trx->initial->time);
 148
 149                         switch(mi->type) {
 150
 151                         case GCP_CMD_ADD_REPLY:
 152                                 time_stat_update(&(ms->rtd[0]),&delta, pinfo);
 153                                 break;
 154                         case GCP_CMD_MOVE_REPLY:
 155                                 time_stat_update(&(ms->rtd[1]),&delta, pinfo);
 156                                 break;
 157                         case GCP_CMD_MOD_REPLY:
 158                                 time_stat_update(&(ms->rtd[2]),&delta, pinfo);
 159                                 break;
 160                         case GCP_CMD_SUB_REPLY:
 161                                 time_stat_update(&(ms->rtd[3]),&delta, pinfo);
 162                                 break;
 163                         case GCP_CMD_AUDITCAP_REPLY:
 164                                 time_stat_update(&(ms->rtd[4]),&delta, pinfo);
 165                                 break;
 166                         case GCP_CMD_AUDITVAL_REPLY:
 167                                 time_stat_update(&(ms->rtd[5]),&delta, pinfo);
 168                                 break;
 169                         case GCP_CMD_NOTIFY_REPLY:
 170                                 time_stat_update(&(ms->rtd[6]),&delta, pinfo);
 171                                 break;
 172                         case GCP_CMD_SVCCHG_REPLY:
 173                                 time_stat_update(&(ms->rtd[7]),&delta, pinfo);
 174                                 break;
 175                         case GCP_CMD_TOPOLOGY_REPLY:
 176                                 time_stat_update(&(ms->rtd[8]),&delta, pinfo);
 177                                 break;
 178                         case GCP_CMD_REPLY:
 179                                 time_stat_update(&(ms->rtd[9]),&delta, pinfo);
 180                                 break;
 181                         default:
 182                                 time_stat_update(&(ms->rtd[11]),&delta, pinfo);
 183                         }
 184                         time_stat_update(&(ms->rtd[10]),&delta, pinfo);
 185
 186                         ret = 1;
 187                 }
 188                 break;
 189
 190         default:
 191                 break;
 192         }
 193
 194         return ret;
 195 }
 196