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;
  61                              (cmd_msg != NULL) && (cmd_msg->cmd->msg->framenum != cmd->msg->framenum);
  62                              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;
  88                              (cmd_msg != NULL) && (cmd_msg->cmd->msg->framenum != cmd->msg->framenum);
  89                              cmd_msg = cmd_msg->next) {
  90
  91                                 switch (cmd_msg->cmd->type) {
  92
  93                                 GCP_CMD_REQ_CASE
  94                                         return TRUE;
  95                                         break;
  96                                 default:
  97                                         return FALSE;
  98                                         break;
  99                                 }
 100                         }
 101
 102                         return FALSE;
 103                 }
 104                 break;
 105         default:
 106                 return FALSE;
 107                 break;
 108         }
 109 }
 110
 111 int
 112 megacostat_packet(void *pms, packet_info *pinfo, epan_dissect_t *edt _U_, const void *pmi)
 113 {
 114         megacostat_t *ms=(megacostat_t *)pms;
 115         const gcp_cmd_t *mi=(const gcp_cmd_t*)pmi;
 116         nstime_t delta;
 117         int ret = 0;
 118
 119         switch (mi->type) {
 120
 121         GCP_CMD_REQ_CASE
 122                 if(!mi->trx->initial) {
 123                         /* Track Context is probably disabled, we cannot
 124                          * measure service response time */
 125                         return 0;
 126                 }
 127
 128                 else if(mi->trx->initial->framenum != mi->msg->framenum){
 129                         /* Duplicate is ignored */
 130                         ms->req_dup_num++;
 131                 }
 132                 else {
 133                         ms->open_req_num++;
 134                 }
 135                 break;
 136
 137         GCP_CMD_REPLY_CASE
 138                 if(megacostat_is_duplicate_reply(mi)){
 139                         /* Duplicate is ignored */
 140                         ms->rsp_dup_num++;
 141                 }
 142                 else if (!megacostat_had_request(mi)) {
 143                         /* no request was seen */
 144                         ms->disc_rsp_num++;
 145                 }
 146                 else {
 147                         ms->open_req_num--;
 148                         /* calculate time delta between request and response */
 149                         nstime_delta(&delta, &pinfo->fd->abs_ts, &mi->trx->initial->time);
 150
 151                         switch(mi->type) {
 152
 153                         case GCP_CMD_ADD_REPLY:
 154                                 time_stat_update(&(ms->rtd[0]),&delta, pinfo);
 155                                 break;
 156                         case GCP_CMD_MOVE_REPLY:
 157                                 time_stat_update(&(ms->rtd[1]),&delta, pinfo);
 158                                 break;
 159                         case GCP_CMD_MOD_REPLY:
 160                                 time_stat_update(&(ms->rtd[2]),&delta, pinfo);
 161                                 break;
 162                         case GCP_CMD_SUB_REPLY:
 163                                 time_stat_update(&(ms->rtd[3]),&delta, pinfo);
 164                                 break;
 165                         case GCP_CMD_AUDITCAP_REPLY:
 166                                 time_stat_update(&(ms->rtd[4]),&delta, pinfo);
 167                                 break;
 168                         case GCP_CMD_AUDITVAL_REPLY:
 169                                 time_stat_update(&(ms->rtd[5]),&delta, pinfo);
 170                                 break;
 171                         case GCP_CMD_NOTIFY_REPLY:
 172                                 time_stat_update(&(ms->rtd[6]),&delta, pinfo);
 173                                 break;
 174                         case GCP_CMD_SVCCHG_REPLY:
 175                                 time_stat_update(&(ms->rtd[7]),&delta, pinfo);
 176                                 break;
 177                         case GCP_CMD_TOPOLOGY_REPLY:
 178                                 time_stat_update(&(ms->rtd[8]),&delta, pinfo);
 179                                 break;
 180                         case GCP_CMD_REPLY:
 181                                 time_stat_update(&(ms->rtd[9]),&delta, pinfo);
 182                                 break;
 183                         default:
 184                                 time_stat_update(&(ms->rtd[11]),&delta, pinfo);
 185                         }
 186                         time_stat_update(&(ms->rtd[10]),&delta, pinfo);
 187
 188                         ret = 1;
 189                 }
 190                 break;
 191
 192         default:
 193                 break;
 194         }
 195
 196         return ret;
 197 }
 198