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 "../simple_dialog.h"
  46 #include "../file.h"
  47 #include "../globals.h"
  48 #include "../stat_menu.h"
  49
  50 #include "tap-megaco-common.h"
  51
  52 static gboolean
  53 megacostat_is_duplicate_reply(const gcp_cmd_t* cmd)
  54 {
  55         switch (cmd->type) {
  56
  57         GCP_CMD_REPLY_CASE
  58                 {
  59                         gcp_cmd_msg_t *cmd_msg;
  60                         /* cycle through commands to find same command in the transaction */
  61                         for (cmd_msg = cmd->trx->cmds; cmd_msg->cmd->msg->framenum != cmd->msg->framenum &&
  62                                         cmd_msg != NULL; cmd_msg = cmd_msg->next) {
  63                                 if (cmd_msg->cmd->type == cmd->type)
  64                                         return TRUE;
  65                         }
  66
  67                         return FALSE;
  68                 }
  69                 break;
  70         default:
  71                 return FALSE;
  72                 break;
  73         }
  74
  75
  76 }
  77
  78 static gboolean
  79 megacostat_had_request(const gcp_cmd_t* cmd)
  80 {
  81         switch (cmd->type) {
  82
  83         GCP_CMD_REPLY_CASE
  84                 {
  85                         gcp_cmd_msg_t *cmd_msg;
  86                         /* cycle through commands to find a request in the transaction */
  87                         for (cmd_msg = cmd->trx->cmds; cmd_msg->cmd->msg->framenum != cmd->msg->framenum &&
  88                                         cmd_msg != NULL; cmd_msg = cmd_msg->next) {
  89
  90                                 switch (cmd_msg->cmd->type) {
  91
  92                                 GCP_CMD_REQ_CASE
  93                                         return TRUE;
  94                                         break;
  95                                 default:
  96                                         return FALSE;
  97                                         break;
  98                                 }
  99                         }
 100
 101                         return FALSE;
 102                 }
 103                 break;
 104         default:
 105                 return FALSE;
 106                 break;
 107         }
 108 }
 109
 110 int
 111 megacostat_packet(void *pms, packet_info *pinfo, epan_dissect_t *edt _U_, const void *pmi)
 112 {
 113         megacostat_t *ms=(megacostat_t *)pms;
 114         const gcp_cmd_t *mi=(const gcp_cmd_t*)pmi;
 115         nstime_t delta;
 116         int ret = 0;
 117
 118         switch (mi->type) {
 119
 120         GCP_CMD_REQ_CASE
 121                 if(!mi->trx->initial) {
 122                         /* Track Context is probably disabled, we cannot
 123                          * measure service response time */
 124                         return 0;
 125                 }
 126
 127                 else if(mi->trx->initial->framenum != mi->msg->framenum){
 128                         /* Duplicate is ignored */
 129                         ms->req_dup_num++;
 130                 }
 131                 else {
 132                         ms->open_req_num++;
 133                 }
 134                 break;
 135
 136         GCP_CMD_REPLY_CASE
 137                 if(megacostat_is_duplicate_reply(mi)){
 138                         /* Duplicate is ignored */
 139                         ms->rsp_dup_num++;
 140                 }
 141                 else if (!megacostat_had_request(mi)) {
 142                         /* no request was seen */
 143                         ms->disc_rsp_num++;
 144                 }
 145                 else {
 146                         ms->open_req_num--;
 147                         /* calculate time delta between request and response */
 148                         nstime_delta(&delta, &pinfo->fd->abs_ts, &mi->trx->initial->time);
 149
 150                         switch(mi->type) {
 151
 152                         case GCP_CMD_ADD_REPLY:
 153                                 time_stat_update(&(ms->rtd[0]),&delta, pinfo);
 154                                 break;
 155                         case GCP_CMD_MOVE_REPLY:
 156                                 time_stat_update(&(ms->rtd[1]),&delta, pinfo);
 157                                 break;
 158                         case GCP_CMD_MOD_REPLY:
 159                                 time_stat_update(&(ms->rtd[2]),&delta, pinfo);
 160                                 break;
 161                         case GCP_CMD_SUB_REPLY:
 162                                 time_stat_update(&(ms->rtd[3]),&delta, pinfo);
 163                                 break;
 164                         case GCP_CMD_AUDITCAP_REPLY:
 165                                 time_stat_update(&(ms->rtd[4]),&delta, pinfo);
 166                                 break;
 167                         case GCP_CMD_AUDITVAL_REPLY:
 168                                 time_stat_update(&(ms->rtd[5]),&delta, pinfo);
 169                                 break;
 170                         case GCP_CMD_NOTIFY_REPLY:
 171                                 time_stat_update(&(ms->rtd[6]),&delta, pinfo);
 172                                 break;
 173                         case GCP_CMD_SVCCHG_REPLY:
 174                                 time_stat_update(&(ms->rtd[7]),&delta, pinfo);
 175                                 break;
 176                         case GCP_CMD_TOPOLOGY_REPLY:
 177                                 time_stat_update(&(ms->rtd[8]),&delta, pinfo);
 178                                 break;
 179                         case GCP_CMD_REPLY:
 180                                 time_stat_update(&(ms->rtd[9]),&delta, pinfo);
 181                                 break;
 182                         default:
 183                                 time_stat_update(&(ms->rtd[11]),&delta, pinfo);
 184                         }
 185                         time_stat_update(&(ms->rtd[10]),&delta, pinfo);
 186
 187                         ret = 1;
 188                 }
 189                 break;
 190
 191         default:
 192                 break;
 193         }
 194
 195         return ret;
 196 }
 197