aboutsummaryrefslogtreecommitdiffstats
path: root/tap-h225rassrt.c
blob: a33fd8ba601d3c200f7a98452a7d0533e16b5a8d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
/* tap_h225rassrt.c
 * h225 RAS Service Response Time statistics for ethereal
 * Copyright 2003 Lars Roland
 *
 * $Id: tap-h225rassrt.c,v 1.1 2003/11/16 23:11:18 sahlberg Exp $
 *
 * Ethereal - Network traffic analyzer
 * By Gerald Combs <gerald@ethereal.com>
 * Copyright 1998 Gerald Combs
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <stdio.h>

#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif

#include <string.h>
#include "epan/packet_info.h"
#include "tap.h"
#include "epan/value_string.h"
#include "register.h"
#include "packet-h225.h"
#include "timestats.h"

/* following values represent the size of their valuestring arrays */
#define NUM_RAS_STATS 7

static const value_string ras_message_category[] = {
  {  0,	"Gatekeeper    "},
  {  1,	"Registration  "},
  {  2,	"UnRegistration"},
  {  3,	"Admission     "},
  {  4,	"Bandwidth     "},
  {  5,	"Disengage     "},
  {  6,	"Location      "},
  {  0, NULL }
};

typedef enum _ras_type {
	RAS_REQUEST,
	RAS_CONFIRM,
	RAS_REJECT,
	RAS_OTHER
}ras_type;

typedef enum _ras_category {
	RAS_GATEKEEPER,
	RAS_REGISTRATION,
	RAS_UNREGISTRATION,
	RAS_ADMISSION,
	RAS_BANDWIDTH,
	RAS_DISENGAGE,
	RAS_LOCATION,
	RAS_OTHERS
}ras_category;

/* Summary of response-time calculations*/
typedef struct _h225_rtd_t {
	guint32 open_req_num;
	guint32 disc_rsp_num;
	guint32 req_dup_num;
	guint32 rsp_dup_num;
	timestat_t stats;
} h225_rtd_t;

/* used to keep track of the statistics for an entire program interface */
typedef struct _h225rassrt_t {
	char *filter;
	h225_rtd_t ras_rtd[NUM_RAS_STATS];
} h225rassrt_t;


static void
h225rassrt_reset(void *phs)
{
	h225rassrt_t *hs=(h225rassrt_t *)phs;
	int i;

	for(i=0;i<NUM_RAS_STATS;i++) {
		hs->ras_rtd[i].stats.num = 0;
		hs->ras_rtd[i].stats.min_num = 0;
		hs->ras_rtd[i].stats.max_num = 0;
		hs->ras_rtd[i].stats.min.secs = 0;
        	hs->ras_rtd[i].stats.min.nsecs = 0;
        	hs->ras_rtd[i].stats.max.secs = 0;
        	hs->ras_rtd[i].stats.max.nsecs = 0;
        	hs->ras_rtd[i].stats.tot.secs = 0;
        	hs->ras_rtd[i].stats.tot.nsecs = 0;
		hs->ras_rtd[i].open_req_num = 0;
		hs->ras_rtd[i].disc_rsp_num = 0;
		hs->ras_rtd[i].req_dup_num = 0;
		hs->ras_rtd[i].rsp_dup_num = 0;
	}

}

static int
h225rassrt_packet(void *phs, packet_info *pinfo _U_, epan_dissect_t *edt _U_, void *phi)
{
	h225rassrt_t *hs=(h225rassrt_t *)phs;
	h225_packet_info *pi=phi;

	ras_type rasmsg_type = RAS_OTHER;
	ras_category rascategory = RAS_OTHERS;

	if (pi->msg_type != H225_RAS || pi->msg_tag == -1) {
		/* No RAS Message or uninitialized msg_tag -> return */
		return 0;
	}

	if (pi->msg_tag < 21) {
		/* */
		rascategory = pi->msg_tag / 3;
		rasmsg_type = pi->msg_tag % 3;
	}
	else {
		/* No SRT yet (ToDo) */
		return 0;
	}

	switch(rasmsg_type) {

	case RAS_REQUEST:
		if(pi->is_duplicate){
			hs->ras_rtd[rascategory].req_dup_num++;
		}
		else {
			hs->ras_rtd[rascategory].open_req_num++;
		}
		break;

	case RAS_CONFIRM:
		/* no break - delay calculation is identical for Confirm and Reject  */
	case RAS_REJECT:
		if(pi->is_duplicate){
			/* Duplicate is ignored */
			hs->ras_rtd[rascategory].rsp_dup_num++;
		}
		else if (!pi->request_available) {
			/* no request was seen, ignore response  */
			hs->ras_rtd[rascategory].disc_rsp_num++;
		}
		else {
			hs->ras_rtd[rascategory].open_req_num--;
			time_stat_update(&(hs->ras_rtd[rascategory].stats),&(pi->delta_time), pinfo);
		}
		break;

	default:
		return 0;
		break;
	}
	return 1;
}

static void
h225rassrt_draw(void *phs)
{
	h225rassrt_t *hs=(h225rassrt_t *)phs;
	int i;
	timestat_t *rtd_temp;

	printf("======================================== H225 RAS Service Response Time ========================================\n");
	printf("H225 RAS Service Response Time (SRT) Statistics:\n");
	printf("RAS-Messages   | Measurements |     Min SRT    |     Max SRT    |     Avg SRT    | Min in Frame | Max in Frame |\n");
	for(i=0;i<NUM_RAS_STATS;i++) {
		rtd_temp = &(hs->ras_rtd[i].stats);
		if(rtd_temp->num){
			printf("%s | %10u   | %9.2f msec | %9.2f msec | %9.2f msec |  %10u  |  %10u  |\n",
		        	val_to_str(i,ras_message_category,"Unknown       "),rtd_temp->num,
				nstime_to_msec(&(rtd_temp->min)), nstime_to_msec(&(rtd_temp->max)),
				get_average(&(rtd_temp->tot), rtd_temp->num),
				rtd_temp->min_num, rtd_temp->max_num
			);
		}
	}
        printf("================================================================================================================\n");
	printf("RAS-Messages   |   Open REQ   |  Discarded RSP  |   Repeated REQ  |   Repeated RSP  |\n");
	for(i=0;i<NUM_RAS_STATS;i++) {
		rtd_temp = &(hs->ras_rtd[i].stats);
		if(rtd_temp->num){
			printf("%s | %10u   |    %10u   |    %10u   |    %10u   |\n",
				val_to_str(i,ras_message_category,"Unknown       "),
				hs->ras_rtd[i].open_req_num, hs->ras_rtd[i].disc_rsp_num,
				hs->ras_rtd[i].req_dup_num, hs->ras_rtd[i].rsp_dup_num
			);
		}
	}
	printf("================================================================================================================\n");

}


static void
h225rassrt_init(char *optarg)
{
	h225rassrt_t *hs;
	char *filter=NULL;
	GString *error_string;

	if(!strncmp(optarg,"h225,srt,",9)){
		filter=optarg+9;
	} else {
		filter=g_malloc(1);
		*filter='\0';
	}

	hs = g_malloc(sizeof(h225rassrt_t));
	hs->filter=g_malloc(strlen(filter)+1);
	strcpy(hs->filter, filter);

	h225rassrt_reset(hs);

    	error_string=register_tap_listener("h225", hs, filter, NULL, h225rassrt_packet, h225rassrt_draw);
    	if(error_string){
		/* error, we failed to attach to the tap. clean up */
		g_free(hs->filter);
		g_free(hs);

		fprintf(stderr, "tethereal: Couldn't register h225,srt tap: %s\n",
		    error_string->str);
		g_string_free(error_string, TRUE);
		exit(1);
	}
}


void
register_tap_listener_h225rassrt(void)
{
	register_ethereal_tap("h225,srt", h225rassrt_init);
}