tap-radiusstat.c

   1 /* tap-radiusstat.c
   2  * Copyright 2006 Alejandro Vaquero <alejandrovaquero@yahoo.com>
   3  *
   4  *
   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 "register.h"
  41 #include <epan/dissectors/packet-radius.h>
  42 #include "timestats.h"
  43
  44 #define NUM_TIMESTATS 8
  45
  46 /* used to keep track of the statistics for an entire program interface */
  47 typedef struct _radiusstat_t {
  48         char *filter;
  49         timestat_t rtd[NUM_TIMESTATS];
  50         guint32 open_req_num;
  51         guint32 disc_rsp_num;
  52         guint32 req_dup_num;
  53         guint32 rsp_dup_num;
  54 } radiusstat_t;
  55
  56 static const value_string radius_message_code[] = {
  57   {  0, "Overall       "},
  58   {  1, "Access        "},
  59   {  2, "Accounting    "},
  60   {  3, "Access Passw  "},
  61   {  4, "Ascend Acce Ev"},
  62   {  5, "Diconnect     "},
  63   {  6, "Change Filter "},
  64   {  7, "Other         "},
  65 };
  66
  67 static int
  68 radiusstat_packet(void *prs, packet_info *pinfo, epan_dissect_t *edt _U_, const void *pri)
  69 {
  70         radiusstat_t *rs=(radiusstat_t *)prs;
  71         const radius_info_t *ri=pri;
  72         nstime_t delta;
  73
  74         switch (ri->code) {
  75
  76         case RADIUS_ACCESS_REQUEST:
  77         case RADIUS_ACCOUNTING_REQUEST:
  78         case RADIUS_ACCESS_PASSWORD_REQUEST:
  79         case RADIUS_ASCEND_ACCESS_EVENT_REQUEST:
  80         case RADIUS_DISCONNECT_REQUEST:
  81         case RADIUS_CHANGE_FILTER_REQUEST:
  82                 if(ri->is_duplicate){
  83                         /* Duplicate is ignored */
  84                         rs->req_dup_num++;
  85                         return 0;
  86                 }
  87                 else {
  88                         rs->open_req_num++;
  89                         return 0;
  90                 }
  91         break;
  92
  93         case RADIUS_ACCESS_ACCEPT:
  94         case RADIUS_ACCESS_REJECT:
  95         case RADIUS_ACCOUNTING_RESPONSE:
  96         case RADIUS_ACCESS_PASSWORD_ACK:
  97         case RADIUS_ACCESS_PASSWORD_REJECT:
  98         case RADIUS_ASCEND_ACCESS_EVENT_RESPONSE:
  99         case RADIUS_DISCONNECT_REQUEST_ACK:
 100         case RADIUS_DISCONNECT_REQUEST_NAK:
 101         case RADIUS_CHANGE_FILTER_REQUEST_ACK:
 102         case RADIUS_CHANGE_FILTER_REQUEST_NAK:
 103                 if(ri->is_duplicate){
 104                         /* Duplicate is ignored */
 105                         rs->rsp_dup_num++;
 106                         return 0;
 107                 }
 108                 else if (!ri->request_available) {
 109                         /* no request was seen */
 110                         rs->disc_rsp_num++;
 111                         return 0;
 112                 }
 113                 else {
 114                         rs->open_req_num--;
 115                         /* calculate time delta between request and response */
 116                         nstime_delta(&delta, &pinfo->fd->abs_ts, &ri->req_time);
 117
 118                         time_stat_update(&(rs->rtd[0]),&delta, pinfo);
 119                         if (ri->code == RADIUS_ACCESS_ACCEPT || ri->code == RADIUS_ACCESS_REJECT) {
 120                                 time_stat_update(&(rs->rtd[1]),&delta, pinfo);
 121                         }
 122                         else if (ri->code == RADIUS_ACCOUNTING_RESPONSE) {
 123                                 time_stat_update(&(rs->rtd[2]),&delta, pinfo);
 124                         }
 125
 126
 127
 128                         else {
 129                                 time_stat_update(&(rs->rtd[7]),&delta, pinfo);
 130                         }
 131
 132                         return 1;
 133                 }
 134         break;
 135
 136         default:
 137                 return 0;
 138         break;
 139         }
 140 }
 141
 142 static void
 143 radiusstat_draw(void *prs)
 144 {
 145         radiusstat_t *rs=(radiusstat_t *)prs;
 146         int i;
 147
 148         /* printing results */
 149         printf("\n");
 150         printf("===========================================================================================================\n");
 151         printf("RADIUS Response Time Delay (RTD) Statistics:\n");
 152         printf("Filter for statistics: %s\n",rs->filter?rs->filter:"");
 153         printf("Duplicate requests: %u\n",rs->req_dup_num);
 154         printf("Duplicate responses: %u\n",rs->rsp_dup_num);
 155         printf("Open requests: %u\n",rs->open_req_num);
 156         printf("Discarded responses: %u\n",rs->disc_rsp_num);
 157         printf("Type           | Messages   |    Min RTD    |    Max RTD    |    Avg RTD    | Min in Frame | Max in Frame |\n");
 158         for(i=0;i<NUM_TIMESTATS;i++) {
 159                 if(rs->rtd[i].num) {
 160                         printf("%s | %7u    | %8.2f msec | %8.2f msec | %8.2f msec |  %10u  |  %10u  |\n",
 161                                 val_to_str(i,radius_message_code,"Other  "),rs->rtd[i].num,
 162                                 nstime_to_msec(&(rs->rtd[i].min)), nstime_to_msec(&(rs->rtd[i].max)),
 163                                 get_average(&(rs->rtd[i].tot), rs->rtd[i].num),
 164                                 rs->rtd[i].min_num, rs->rtd[i].max_num
 165                         );
 166                 }
 167         }
 168         printf("===========================================================================================================\n");
 169 }
 170
 171
 172 static void
 173 radiusstat_init(const char *optarg, void* userdata _U_)
 174 {
 175         radiusstat_t *rs;
 176         int i;
 177         const char *filter=NULL;
 178         GString *error_string;
 179
 180         if(!strncmp(optarg,"radius,rtd,",11)){
 181                 filter=optarg+11;
 182         } else {
 183                 filter="";
 184         }
 185
 186         rs=g_malloc(sizeof(radiusstat_t));
 187         rs->filter=g_malloc(strlen(filter)+1);
 188         strcpy(rs->filter, filter);
 189
 190         for(i=0;i<NUM_TIMESTATS;i++) {
 191                 rs->rtd[i].num=0;
 192                 rs->rtd[i].min_num=0;
 193                 rs->rtd[i].max_num=0;
 194                 rs->rtd[i].min.secs=0;
 195         rs->rtd[i].min.nsecs=0;
 196         rs->rtd[i].max.secs=0;
 197         rs->rtd[i].max.nsecs=0;
 198         rs->rtd[i].tot.secs=0;
 199         rs->rtd[i].tot.nsecs=0;
 200         }
 201
 202         rs->open_req_num=0;
 203         rs->disc_rsp_num=0;
 204         rs->req_dup_num=0;
 205         rs->rsp_dup_num=0;
 206
 207         error_string=register_tap_listener("radius", rs, filter, NULL, radiusstat_packet, radiusstat_draw);
 208         if(error_string){
 209                 /* error, we failed to attach to the tap. clean up */
 210                 g_free(rs->filter);
 211                 g_free(rs);
 212
 213                 fprintf(stderr, "tshark: Couldn't register radius,rtd tap: %s\n",
 214                     error_string->str);
 215                 g_string_free(error_string, TRUE);
 216                 exit(1);
 217         }
 218 }
 219
 220
 221 void
 222 register_tap_listener_radiusstat(void)
 223 {
 224         register_stat_cmd_arg("radius,rtd", radiusstat_init, NULL);
 225 }
 226