More rewrite of prohibited APIs (sprintf, strcpy, strcat).
[obnox/wireshark/wip.git] / tap-h225rassrt.c
1 /* tap_h225rassrt.c
2  * h225 RAS Service Response Time statistics for wireshark
3  * Copyright 2003 Lars Roland
4  *
5  * $Id$
6  *
7  * Wireshark - Network traffic analyzer
8  * By Gerald Combs <gerald@wireshark.org>
9  * Copyright 1998 Gerald Combs
10  *
11  * This program is free software; you can redistribute it and/or
12  * modify it under the terms of the GNU General Public License
13  * as published by the Free Software Foundation; either version 2
14  * of the License, or (at your option) any later version.
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19  * GNU General Public License for more details.
20  *
21  * You should have received a copy of the GNU General Public License
22  * along with this program; if not, write to the Free Software
23  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
24  */
25
26 #ifdef HAVE_CONFIG_H
27 # include "config.h"
28 #endif
29
30 #include <stdio.h>
31
32 #ifdef HAVE_SYS_TYPES_H
33 # include <sys/types.h>
34 #endif
35
36 #include <string.h>
37 #include "epan/packet.h"
38 #include "epan/packet_info.h"
39 #include <epan/tap.h>
40 #include <epan/stat_cmd_args.h>
41 #include "epan/value_string.h"
42 #include "register.h"
43 #include <epan/dissectors/packet-h225.h>
44 #include "timestats.h"
45
46 /* following values represent the size of their valuestring arrays */
47 #define NUM_RAS_STATS 7
48
49 static const value_string ras_message_category[] = {
50   {  0, "Gatekeeper    "},
51   {  1, "Registration  "},
52   {  2, "UnRegistration"},
53   {  3, "Admission     "},
54   {  4, "Bandwidth     "},
55   {  5, "Disengage     "},
56   {  6, "Location      "},
57   {  0, NULL }
58 };
59
60 typedef enum _ras_type {
61         RAS_REQUEST,
62         RAS_CONFIRM,
63         RAS_REJECT,
64         RAS_OTHER
65 }ras_type;
66
67 typedef enum _ras_category {
68         RAS_GATEKEEPER,
69         RAS_REGISTRATION,
70         RAS_UNREGISTRATION,
71         RAS_ADMISSION,
72         RAS_BANDWIDTH,
73         RAS_DISENGAGE,
74         RAS_LOCATION,
75         RAS_OTHERS
76 }ras_category;
77
78 /* Summary of response-time calculations*/
79 typedef struct _h225_rtd_t {
80         guint32 open_req_num;
81         guint32 disc_rsp_num;
82         guint32 req_dup_num;
83         guint32 rsp_dup_num;
84         timestat_t stats;
85 } h225_rtd_t;
86
87 /* used to keep track of the statistics for an entire program interface */
88 typedef struct _h225rassrt_t {
89         char *filter;
90         h225_rtd_t ras_rtd[NUM_RAS_STATS];
91 } h225rassrt_t;
92
93
94 static void
95 h225rassrt_reset(void *phs)
96 {
97         h225rassrt_t *hs=(h225rassrt_t *)phs;
98         int i;
99
100         for(i=0;i<NUM_RAS_STATS;i++) {
101                 hs->ras_rtd[i].stats.num = 0;
102                 hs->ras_rtd[i].stats.min_num = 0;
103                 hs->ras_rtd[i].stats.max_num = 0;
104                 hs->ras_rtd[i].stats.min.secs = 0;
105                 hs->ras_rtd[i].stats.min.nsecs = 0;
106                 hs->ras_rtd[i].stats.max.secs = 0;
107                 hs->ras_rtd[i].stats.max.nsecs = 0;
108                 hs->ras_rtd[i].stats.tot.secs = 0;
109                 hs->ras_rtd[i].stats.tot.nsecs = 0;
110                 hs->ras_rtd[i].open_req_num = 0;
111                 hs->ras_rtd[i].disc_rsp_num = 0;
112                 hs->ras_rtd[i].req_dup_num = 0;
113                 hs->ras_rtd[i].rsp_dup_num = 0;
114         }
115
116 }
117
118 static int
119 h225rassrt_packet(void *phs, packet_info *pinfo _U_, epan_dissect_t *edt _U_, const void *phi)
120 {
121         h225rassrt_t *hs=(h225rassrt_t *)phs;
122         const h225_packet_info *pi=phi;
123
124         ras_type rasmsg_type = RAS_OTHER;
125         ras_category rascategory = RAS_OTHERS;
126
127         if (pi->msg_type != H225_RAS || pi->msg_tag == -1) {
128                 /* No RAS Message or uninitialized msg_tag -> return */
129                 return 0;
130         }
131
132         if (pi->msg_tag < 21) {
133                 /* */
134                 rascategory = pi->msg_tag / 3;
135                 rasmsg_type = pi->msg_tag % 3;
136         }
137         else {
138                 /* No SRT yet (ToDo) */
139                 return 0;
140         }
141
142         switch(rasmsg_type) {
143
144         case RAS_REQUEST:
145                 if(pi->is_duplicate){
146                         hs->ras_rtd[rascategory].req_dup_num++;
147                 }
148                 else {
149                         hs->ras_rtd[rascategory].open_req_num++;
150                 }
151                 break;
152
153         case RAS_CONFIRM:
154                 /* no break - delay calculation is identical for Confirm and Reject  */
155         case RAS_REJECT:
156                 if(pi->is_duplicate){
157                         /* Duplicate is ignored */
158                         hs->ras_rtd[rascategory].rsp_dup_num++;
159                 }
160                 else if (!pi->request_available) {
161                         /* no request was seen, ignore response  */
162                         hs->ras_rtd[rascategory].disc_rsp_num++;
163                 }
164                 else {
165                         hs->ras_rtd[rascategory].open_req_num--;
166                         time_stat_update(&(hs->ras_rtd[rascategory].stats),&(pi->delta_time), pinfo);
167                 }
168                 break;
169
170         default:
171                 return 0;
172                 break;
173         }
174         return 1;
175 }
176
177 static void
178 h225rassrt_draw(void *phs)
179 {
180         h225rassrt_t *hs=(h225rassrt_t *)phs;
181         int i;
182         timestat_t *rtd_temp;
183
184         printf("======================================== H225 RAS Service Response Time ========================================\n");
185         printf("H225 RAS Service Response Time (SRT) Statistics:\n");
186         printf("RAS-Messages   | Measurements |     Min SRT    |     Max SRT    |     Avg SRT    | Min in Frame | Max in Frame |\n");
187         for(i=0;i<NUM_RAS_STATS;i++) {
188                 rtd_temp = &(hs->ras_rtd[i].stats);
189                 if(rtd_temp->num){
190                         printf("%s | %10u   | %9.2f msec | %9.2f msec | %9.2f msec |  %10u  |  %10u  |\n",
191                                 val_to_str(i,ras_message_category,"Unknown       "),rtd_temp->num,
192                                 nstime_to_msec(&(rtd_temp->min)), nstime_to_msec(&(rtd_temp->max)),
193                                 get_average(&(rtd_temp->tot), rtd_temp->num),
194                                 rtd_temp->min_num, rtd_temp->max_num
195                         );
196                 }
197         }
198         printf("================================================================================================================\n");
199         printf("RAS-Messages   |   Open REQ   |  Discarded RSP  |   Repeated REQ  |   Repeated RSP  |\n");
200         for(i=0;i<NUM_RAS_STATS;i++) {
201                 rtd_temp = &(hs->ras_rtd[i].stats);
202                 if(rtd_temp->num){
203                         printf("%s | %10u   |    %10u   |    %10u   |    %10u   |\n",
204                                 val_to_str(i,ras_message_category,"Unknown       "),
205                                 hs->ras_rtd[i].open_req_num, hs->ras_rtd[i].disc_rsp_num,
206                                 hs->ras_rtd[i].req_dup_num, hs->ras_rtd[i].rsp_dup_num
207                         );
208                 }
209         }
210         printf("================================================================================================================\n");
211
212 }
213
214
215 static void
216 h225rassrt_init(const char *optarg, void* userdata _U_)
217 {
218         h225rassrt_t *hs;
219         const char *filter=NULL;
220         GString *error_string;
221
222         if(!strncmp(optarg,"h225,srt,",9)){
223                 filter=optarg+9;
224         } else {
225                 filter="";
226         }
227
228         hs = g_malloc(sizeof(h225rassrt_t));
229         hs->filter=g_strdup(filter);
230
231         h225rassrt_reset(hs);
232
233         error_string=register_tap_listener("h225", hs, filter, NULL, h225rassrt_packet, h225rassrt_draw);
234         if(error_string){
235                 /* error, we failed to attach to the tap. clean up */
236                 g_free(hs->filter);
237                 g_free(hs);
238
239                 fprintf(stderr, "tshark: Couldn't register h225,srt tap: %s\n",
240                     error_string->str);
241                 g_string_free(error_string, TRUE);
242                 exit(1);
243         }
244 }
245
246
247 void
248 register_tap_listener_h225rassrt(void)
249 {
250         register_stat_cmd_arg("h225,srt", h225rassrt_init,NULL);
251 }