tap-radiusstat.c

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