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 typedef enum _radius_category {
  44         RADIUS_CAT_OVERALL = 0,
  45         RADIUS_CAT_ACCESS,
  46         RADIUS_CAT_ACCOUNTING,
  47         RADIUS_CAT_PASSWORD,
  48         RADIUS_CAT_RESOURCE_FREE,
  49         RADIUS_CAT_RESOURCE_QUERY,
  50         RADIUS_CAT_NAS_REBOOT,
  51         RADIUS_CAT_EVENT,
  52         RADIUS_CAT_DISCONNECT,
  53         RADIUS_CAT_COA,
  54         RADIUS_CAT_OTHERS,
  55         RADIUS_CAT_NUM_TIMESTATS
  56 } radius_category;
  57
  58 /* used to keep track of the statistics for an entire program interface */
  59 typedef struct _radiusstat_t {
  60         char *filter;
  61         timestat_t rtd[RADIUS_CAT_NUM_TIMESTATS];
  62         guint32 open_req_num;
  63         guint32 disc_rsp_num;
  64         guint32 req_dup_num;
  65         guint32 rsp_dup_num;
  66 } radiusstat_t;
  67
  68
  69
  70
  71 static const value_string radius_message_code[] = {
  72         {  RADIUS_CAT_OVERALL,        "Overall       "},
  73         {  RADIUS_CAT_ACCESS,         "Access        "},
  74         {  RADIUS_CAT_ACCOUNTING,     "Accounting    "},
  75         {  RADIUS_CAT_PASSWORD,       "Password      "},
  76         {  RADIUS_CAT_RESOURCE_FREE,  "Resource Free "},
  77         {  RADIUS_CAT_RESOURCE_QUERY, "Resource Query"},
  78         {  RADIUS_CAT_NAS_REBOOT,     "NAS Reboot    "},
  79         {  RADIUS_CAT_EVENT,          "Event         "},
  80         {  RADIUS_CAT_DISCONNECT,     "Disconnect    "},
  81         {  RADIUS_CAT_COA,            "CoA           "},
  82         {  RADIUS_CAT_OTHERS,         "Other         "},
  83         {  0, NULL}
  84 };
  85
  86 static int
  87 radiusstat_packet(void *prs, packet_info *pinfo, epan_dissect_t *edt _U_, const void *pri)
  88 {
  89         radiusstat_t *rs=(radiusstat_t *)prs;
  90         const radius_info_t *ri=pri;
  91         nstime_t delta;
  92         int ret = 0;
  93
  94         switch (ri->code) {
  95
  96         case RADIUS_PKT_TYPE_ACCESS_REQUEST:
  97         case RADIUS_PKT_TYPE_ACCOUNTING_REQUEST:
  98         case RADIUS_PKT_TYPE_PASSWORD_REQUEST:
  99         case RADIUS_PKT_TYPE_RESOURCE_FREE_REQUEST:
 100         case RADIUS_PKT_TYPE_RESOURCE_QUERY_REQUEST:
 101         case RADIUS_PKT_TYPE_NAS_REBOOT_REQUEST:
 102         case RADIUS_PKT_TYPE_EVENT_REQUEST:
 103         case RADIUS_PKT_TYPE_DISCONNECT_REQUEST:
 104         case RADIUS_PKT_TYPE_COA_REQUEST:
 105                 if(ri->is_duplicate){
 106                         /* Duplicate is ignored */
 107                         rs->req_dup_num++;
 108                 }
 109                 else {
 110                         rs->open_req_num++;
 111                 }
 112                 break;
 113
 114         case RADIUS_PKT_TYPE_ACCESS_ACCEPT:
 115         case RADIUS_PKT_TYPE_ACCESS_REJECT:
 116         case RADIUS_PKT_TYPE_ACCOUNTING_RESPONSE:
 117         case RADIUS_PKT_TYPE_PASSWORD_ACK:
 118         case RADIUS_PKT_TYPE_PASSWORD_REJECT:
 119         case RADIUS_PKT_TYPE_RESOURCE_FREE_RESPONSE:
 120         case RADIUS_PKT_TYPE_RESOURCE_QUERY_RESPONSE:
 121         case RADIUS_PKT_TYPE_NAS_REBOOT_RESPONSE:
 122         case RADIUS_PKT_TYPE_EVENT_RESPONSE:
 123         case RADIUS_PKT_TYPE_DISCONNECT_ACK:
 124         case RADIUS_PKT_TYPE_DISCONNECT_NAK:
 125         case RADIUS_PKT_TYPE_COA_ACK:
 126         case RADIUS_PKT_TYPE_COA_NAK:
 127                 if(ri->is_duplicate){
 128                         /* Duplicate is ignored */
 129                         rs->rsp_dup_num++;
 130                 }
 131                 else if (!ri->request_available) {
 132                         /* no request was seen */
 133                         rs->disc_rsp_num++;
 134                 }
 135                 else {
 136                         rs->open_req_num--;
 137                         /* calculate time delta between request and response */
 138                         nstime_delta(&delta, &pinfo->fd->abs_ts, &ri->req_time);
 139
 140                         time_stat_update(&(rs->rtd[RADIUS_CAT_OVERALL]),&delta, pinfo);
 141
 142                         if (ri->code == RADIUS_PKT_TYPE_ACCESS_ACCEPT || ri->code == RADIUS_PKT_TYPE_ACCESS_REJECT) {
 143                                 time_stat_update(&(rs->rtd[RADIUS_CAT_ACCESS]),&delta, pinfo);
 144                         }
 145                         else if (ri->code == RADIUS_PKT_TYPE_ACCOUNTING_RESPONSE) {
 146                                 time_stat_update(&(rs->rtd[RADIUS_CAT_ACCOUNTING]),&delta, pinfo);
 147                         }
 148                         else {
 149                                 time_stat_update(&(rs->rtd[RADIUS_CAT_OTHERS]),&delta, pinfo);
 150                         }
 151
 152                         ret = 1;
 153                 }
 154                 break;
 155
 156         default:
 157                 break;
 158         }
 159
 160         return ret;
 161 }
 162
 163 static void
 164 radiusstat_draw(void *prs)
 165 {
 166         radiusstat_t *rs=(radiusstat_t *)prs;
 167         int i;
 168
 169         /* printing results */
 170         printf("\n");
 171         printf("===========================================================================================================\n");
 172         printf("RADIUS Response Time Delay (RTD) Statistics:\n");
 173         printf("Filter for statistics: %s\n",rs->filter?rs->filter:"");
 174         printf("Duplicate requests: %u\n",rs->req_dup_num);
 175         printf("Duplicate responses: %u\n",rs->rsp_dup_num);
 176         printf("Open requests: %u\n",rs->open_req_num);
 177         printf("Discarded responses: %u\n",rs->disc_rsp_num);
 178         printf("Type           | Messages   |    Min RTD    |    Max RTD    |    Avg RTD    | Min in Frame | Max in Frame |\n");
 179         for(i=0;i<RADIUS_CAT_NUM_TIMESTATS;i++) {
 180                 if(rs->rtd[i].num) {
 181                         printf("%s | %7u    | %8.2f msec | %8.2f msec | %8.2f msec |  %10u  |  %10u  |\n",
 182                                 val_to_str(i,radius_message_code,"Other  "),rs->rtd[i].num,
 183                                 nstime_to_msec(&(rs->rtd[i].min)), nstime_to_msec(&(rs->rtd[i].max)),
 184                                 get_average(&(rs->rtd[i].tot), rs->rtd[i].num),
 185                                 rs->rtd[i].min_num, rs->rtd[i].max_num
 186                         );
 187                 }
 188         }
 189         printf("===========================================================================================================\n");
 190 }
 191
 192
 193 static void
 194 radiusstat_init(const char *optarg, void* userdata _U_)
 195 {
 196         radiusstat_t *rs;
 197         int i;
 198         GString *error_string;
 199
 200         rs=g_malloc(sizeof(radiusstat_t));
 201         if(!strncmp(optarg,"radius,rtd,",11)){
 202                 rs->filter=g_strdup(optarg+11);
 203         } else {
 204                 rs->filter=NULL;
 205         }
 206
 207         for(i=0;i<RADIUS_CAT_NUM_TIMESTATS;i++) {
 208                 rs->rtd[i].num=0;
 209                 rs->rtd[i].min_num=0;
 210                 rs->rtd[i].max_num=0;
 211                 rs->rtd[i].min.secs=0;
 212                 rs->rtd[i].min.nsecs=0;
 213                 rs->rtd[i].max.secs=0;
 214                 rs->rtd[i].max.nsecs=0;
 215                 rs->rtd[i].tot.secs=0;
 216                 rs->rtd[i].tot.nsecs=0;
 217         }
 218
 219         rs->open_req_num=0;
 220         rs->disc_rsp_num=0;
 221         rs->req_dup_num=0;
 222         rs->rsp_dup_num=0;
 223
 224         error_string=register_tap_listener("radius", rs, rs->filter, 0, NULL, radiusstat_packet, radiusstat_draw);
 225         if(error_string){
 226                 /* error, we failed to attach to the tap. clean up */
 227                 g_free(rs->filter);
 228                 g_free(rs);
 229
 230                 fprintf(stderr, "tshark: Couldn't register radius,rtd tap: %s\n",
 231                     error_string->str);
 232                 g_string_free(error_string, TRUE);
 233                 exit(1);
 234         }
 235 }
 236
 237
 238 void
 239 register_tap_listener_radiusstat(void)
 240 {
 241         register_stat_cmd_arg("radius,rtd", radiusstat_init, NULL);
 242 }
 243