3 * Copyright 2006, Iskratel , Slovenia
4 * By Jakob Bratkovic <j.bratkovic@iskratel.si> and
5 * Miha Jemec <m.jemec@iskratel.si>
9 * based on rtp_stream.c
10 * Copyright 2003, Alcatel Business Systems
11 * By Lars Ruoff <lars.ruoff@gmx.net>
13 * Wireshark - Network traffic analyzer
14 * By Gerald Combs <gerald@wireshark.org>
15 * Copyright 1998 Gerald Combs
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License
19 * as published by the Free Software Foundation; either version 2
20 * of the License, or (at your option) any later version.
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software
29 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
39 #ifdef HAVE_SYS_TYPES_H
40 # include <sys/types.h>
48 #include <epan/epan.h>
49 #include <epan/packet.h>
51 #include <epan/strutil.h>
53 #include "../globals.h"
54 #include "../register.h"
55 #include "../alert_box.h"
56 #include "../simple_dialog.h"
58 #include "gtk/mcast_stream.h"
59 #include "gtk/mcast_stream_dlg.h"
62 #ifdef HAVE_WINSOCK2_H
66 gint32 trigger=50; /* limit for triggering the burst alarm (in packets per second) */
67 gint32 bufferalarm = 10000; /* limit for triggernig the buffer alarm (in bytes) */
68 guint16 burstint = 100; /* burts interval in ms */
69 gint32 emptyspeed = 5000; /* outgoing speed for single stream (kbps)*/
70 gint32 cumulemptyspeed = 100000; /* outgoiong speed for all streams (kbps)*/
74 /* sliding window and buffer usage */
75 gint32 buffsize = (int)((double)MAX_SPEED * 100 / 1000) * 2;
76 guint16 comparetimes(struct timeval *t1, struct timeval *t2, guint16 burstint);
77 static void buffusagecalc(mcast_stream_info_t *strinfo, packet_info *pinfo, double emptyspeed);
78 static void slidingwindow(mcast_stream_info_t *strinfo, packet_info *pinfo);
81 /****************************************************************************/
82 /* the one and only global mcaststream_tapinfo_t structure */
83 static mcaststream_tapinfo_t the_tapinfo_struct =
84 {0, NULL, 0, NULL, 0, FALSE};
87 /****************************************************************************/
88 /* GCompareFunc style comparison function for _mcast_stream_info */
89 static gint mcast_stream_info_cmp(gconstpointer aa, gconstpointer bb)
91 const struct _mcast_stream_info* a = aa;
92 const struct _mcast_stream_info* b = bb;
96 if (a==NULL || b==NULL)
98 if (ADDRESSES_EQUAL(&(a->src_addr), &(b->src_addr))
99 && (a->src_port == b->src_port)
100 && ADDRESSES_EQUAL(&(a->dest_addr), &(b->dest_addr))
101 && (a->dest_port == b->dest_port))
109 /****************************************************************************/
110 /* when there is a [re]reading of packet's */
111 void mcaststream_reset(mcaststream_tapinfo_t *tapinfo)
115 /* free the data items first */
116 list = g_list_first(tapinfo->strinfo_list);
119 /* XYZ I don't know how to clean this */
120 /*g_free(list->element.buff); */
122 list = g_list_next(list);
124 g_list_free(tapinfo->strinfo_list);
125 tapinfo->strinfo_list = NULL;
127 /* XYZ and why does the line below causes a crach? */
128 /*g_free(tapinfo->allstreams->element.buff);*/
129 g_free(tapinfo->allstreams);
130 tapinfo->allstreams = NULL;
132 tapinfo->nstreams = 0;
133 tapinfo->npackets = 0;
135 ++(tapinfo->launch_count);
140 static void mcaststream_reset_cb(void *arg)
142 mcaststream_reset(arg);
145 /****************************************************************************/
146 /* redraw the output */
147 static void mcaststream_draw(void *arg _U_)
149 /* XXX: see mcaststream_on_update in mcast_streams_dlg.c for comments
150 g_signal_emit_by_name(top_level, "signal_mcaststream_update");
152 mcaststream_dlg_update(the_tapinfo_struct.strinfo_list);
158 /****************************************************************************/
159 /* whenever a udp packet is seen by the tap listener */
160 static int mcaststream_packet(void *arg, packet_info *pinfo, epan_dissect_t *edt _U_, const void *arg2 _U_)
162 mcaststream_tapinfo_t *tapinfo = arg;
163 mcast_stream_info_t tmp_strinfo;
164 mcast_stream_info_t *strinfo = NULL;
168 /* gather infos on the stream this packet is part of */
169 COPY_ADDRESS(&(tmp_strinfo.src_addr), &(pinfo->src));
170 tmp_strinfo.src_port = pinfo->srcport;
171 COPY_ADDRESS(&(tmp_strinfo.dest_addr), &(pinfo->dst));
172 tmp_strinfo.dest_port = pinfo->destport;
174 /* first we ignore non multicast packets; we filter out only those ethernet packets
175 * which start with the 01:00:5E multicast address (for IPv4) and 33:33 multicast
176 * address (for IPv6).
178 if ((pinfo->dl_dst.type != AT_ETHER) ||
179 ((strncmp("01005E", bytes_to_str(pinfo->dl_dst.data, pinfo->dl_dst.len), 6) != 0) &&
180 (strncmp("3333", bytes_to_str(pinfo->dl_dst.data, pinfo->dl_dst.len), 4) != 0)) )
183 /* check whether we already have a stream with these parameters in the list */
184 list = g_list_first(tapinfo->strinfo_list);
187 if (mcast_stream_info_cmp(&tmp_strinfo, (mcast_stream_info_t*)(list->data))==0)
189 strinfo = (mcast_stream_info_t*)(list->data); /*found!*/
192 list = g_list_next(list);
195 /* not in the list? then create a new entry */
197 /*printf("nov sip %s sp %d dip %s dp %d\n", g_strdup(get_addr_name(&(pinfo->src))),
198 pinfo->srcport, g_strdup(get_addr_name(&(pinfo->dst))), pinfo->destport);*/
199 tmp_strinfo.npackets = 0;
200 tmp_strinfo.apackets = 0;
201 tmp_strinfo.first_frame_num = pinfo->fd->num;
202 tmp_strinfo.start_sec = (guint32) pinfo->fd->abs_ts.secs;
203 tmp_strinfo.start_usec = pinfo->fd->abs_ts.nsecs/1000;
204 tmp_strinfo.start_rel_sec = (guint32) pinfo->fd->rel_ts.secs;
205 tmp_strinfo.start_rel_usec = pinfo->fd->rel_ts.nsecs/1000;
206 tmp_strinfo.vlan_id = 0;
208 /* reset Mcast stats */
209 tmp_strinfo.average_bw = 0;
210 tmp_strinfo.total_bytes = 0;
212 /* reset slidingwindow and buffer parameters */
213 tmp_strinfo.element.buff = (struct timeval *)g_malloc(buffsize * sizeof(struct timeval));
214 tmp_strinfo.element.first=0;
215 tmp_strinfo.element.last=0;
216 tmp_strinfo.element.burstsize=1;
217 tmp_strinfo.element.topburstsize=1;
218 tmp_strinfo.element.numbursts=0;
219 tmp_strinfo.element.burststatus=0;
220 tmp_strinfo.element.count=1;
221 tmp_strinfo.element.buffusage=pinfo->fd->pkt_len;
222 tmp_strinfo.element.topbuffusage=pinfo->fd->pkt_len;
223 tmp_strinfo.element.numbuffalarms=0;
224 tmp_strinfo.element.buffstatus=0;
225 tmp_strinfo.element.maxbw=0;
227 strinfo = g_malloc(sizeof(mcast_stream_info_t));
228 *strinfo = tmp_strinfo; /* memberwise copy of struct */
229 tapinfo->strinfo_list = g_list_append(tapinfo->strinfo_list, strinfo);
230 strinfo->element.buff = (struct timeval *)g_malloc(buffsize * sizeof(struct timeval));
232 /* set time with the first packet */
233 if (tapinfo->npackets == 0) {
234 tapinfo->allstreams = g_malloc(sizeof(mcast_stream_info_t));
235 tapinfo->allstreams->element.buff =
236 (struct timeval *)g_malloc(buffsize * sizeof(struct timeval));
237 tapinfo->allstreams->start_rel_sec = (guint32) pinfo->fd->rel_ts.secs;
238 tapinfo->allstreams->start_rel_usec = pinfo->fd->rel_ts.nsecs/1000;
239 tapinfo->allstreams->total_bytes = 0;
240 tapinfo->allstreams->element.first=0;
241 tapinfo->allstreams->element.last=0;
242 tapinfo->allstreams->element.burstsize=1;
243 tapinfo->allstreams->element.topburstsize=1;
244 tapinfo->allstreams->element.numbursts=0;
245 tapinfo->allstreams->element.burststatus=0;
246 tapinfo->allstreams->element.count=1;
247 tapinfo->allstreams->element.buffusage=pinfo->fd->pkt_len;
248 tapinfo->allstreams->element.topbuffusage=pinfo->fd->pkt_len;
249 tapinfo->allstreams->element.numbuffalarms=0;
250 tapinfo->allstreams->element.buffstatus=0;
251 tapinfo->allstreams->element.maxbw=0;
255 /* time between first and last packet in the group */
256 strinfo->stop_rel_sec = (guint32) pinfo->fd->rel_ts.secs;
257 strinfo->stop_rel_usec = pinfo->fd->rel_ts.nsecs/1000;
258 deltatime = ((float)((strinfo->stop_rel_sec * 1000000 + strinfo->stop_rel_usec)
259 - (strinfo->start_rel_sec*1000000 + strinfo->start_rel_usec)))/1000000;
261 /* calculate average bandwidth for this stream */
262 strinfo->total_bytes = strinfo->total_bytes + pinfo->fd->pkt_len;
264 strinfo->average_bw = (((float)(strinfo->total_bytes*8) / deltatime) / 1000000);
266 /* increment the packets counter for this stream and calculate average pps */
267 ++(strinfo->npackets);
268 strinfo->apackets = (guint32) (strinfo->npackets / deltatime);
270 /* time between first and last packet in any group */
271 tapinfo->allstreams->stop_rel_sec = (guint32) pinfo->fd->rel_ts.secs;
272 tapinfo->allstreams->stop_rel_usec = pinfo->fd->rel_ts.nsecs/1000;
273 deltatime = ((float)((tapinfo->allstreams->stop_rel_sec * 1000000 + tapinfo->allstreams->stop_rel_usec)
274 - (tapinfo->allstreams->start_rel_sec*1000000 + tapinfo->allstreams->start_rel_usec)))/1000000;
276 /* increment the packets counter of all streams */
277 ++(tapinfo->npackets);
279 /* calculate average bandwidth for all streams */
280 tapinfo->allstreams->total_bytes = tapinfo->allstreams->total_bytes + pinfo->fd->pkt_len;
282 tapinfo->allstreams->average_bw = (((float)(tapinfo->allstreams->total_bytes *8) / deltatime) / 1000000);
284 /* sliding window and buffercalc for this group*/
285 slidingwindow(strinfo, pinfo);
286 buffusagecalc(strinfo, pinfo, emptyspeed*1000);
287 /* sliding window and buffercalc for all groups */
288 slidingwindow(tapinfo->allstreams, pinfo);
289 buffusagecalc(tapinfo->allstreams, pinfo, cumulemptyspeed*1000);
290 /* end of sliding window */
292 return 1; /* refresh output */
296 /****************************************************************************/
297 /* scan for Mcast streams */
298 void mcaststream_scan(void)
300 gboolean was_registered = the_tapinfo_struct.is_registered;
301 if (!the_tapinfo_struct.is_registered)
302 register_tap_listener_mcast_stream();
304 cf_retap_packets(&cfile, FALSE);
307 remove_tap_listener_mcast_stream();
311 /****************************************************************************/
312 const mcaststream_tapinfo_t* mcaststream_get_info(void)
314 return &the_tapinfo_struct;
318 /****************************************************************************/
320 /****************************************************************************/
322 /****************************************************************************/
324 remove_tap_listener_mcast_stream(void)
326 if (the_tapinfo_struct.is_registered) {
327 protect_thread_critical_region();
328 remove_tap_listener(&the_tapinfo_struct);
329 unprotect_thread_critical_region();
331 the_tapinfo_struct.is_registered = FALSE;
336 /****************************************************************************/
338 register_tap_listener_mcast_stream(void)
340 GString *error_string;
341 if (!the_tapinfo_struct.is_registered) {
342 error_string = register_tap_listener("udp", &the_tapinfo_struct,
343 NULL, mcaststream_reset_cb, mcaststream_packet,
346 if (error_string != NULL) {
347 simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
348 "%s", error_string->str);
349 g_string_free(error_string, TRUE);
353 the_tapinfo_struct.is_registered = TRUE;
357 /*******************************************************************************/
358 /* sliding window and buffer calculations */
360 /* compare two times */
361 guint16 comparetimes(struct timeval *t1, struct timeval *t2, guint16 burstint){
362 if(((t2->tv_sec - t1->tv_sec)*1000 + (t2->tv_usec - t1->tv_usec)/1000) > burstint){
369 /* calculate buffer usage */
370 void buffusagecalc(mcast_stream_info_t *strinfo, packet_info *pinfo, double emptyspeed)
372 gint32 sec=0, usec=0, cur, prev;
373 struct timeval *buffer;
376 buffer = strinfo->element.buff;
377 cur = strinfo->element.last;
389 sec = buffer[cur].tv_sec - buffer[prev].tv_sec;
390 usec = buffer[cur].tv_usec - buffer[prev].tv_usec;
391 timeelapsed = (double)usec/1000000 + (double)sec;
393 /* bytes added to buffer */
394 strinfo->element.buffusage+=pinfo->fd->pkt_len;
396 /* bytes cleared from buffer */
397 strinfo->element.buffusage-= (guint32) (timeelapsed * emptyspeed / 8);
399 if(strinfo->element.buffusage < 0) strinfo->element.buffusage=0;
400 if(strinfo->element.buffusage > strinfo->element.topbuffusage)
401 strinfo->element.topbuffusage = strinfo->element.buffusage;
402 /* check for buffer losses */
403 if((strinfo->element.buffusage >= bufferalarm) && (strinfo->element.buffstatus == 0)){
404 strinfo->element.buffstatus = 1;
405 strinfo->element.numbuffalarms++;
406 } else if(strinfo->element.buffusage < bufferalarm){
407 strinfo->element.buffstatus = 0;
413 /* sliding window calculation */
414 void slidingwindow(mcast_stream_info_t *strinfo, packet_info *pinfo)
416 struct timeval *buffer;
419 buffer = strinfo->element.buff;
421 diff = strinfo->element.last - strinfo->element.first;
422 if(diff < 0) diff+=buffsize;
424 /* check if buffer is full */
425 if(diff >= (buffsize - 2)){
426 fprintf(stderr, "Warning: capture buffer full\n");
427 strinfo->element.first++;
428 if(strinfo->element.first >= buffsize) strinfo->element.first = strinfo->element.first % buffsize;
432 buffer[strinfo->element.last].tv_sec = (guint32) pinfo->fd->rel_ts.secs;
433 buffer[strinfo->element.last].tv_usec = pinfo->fd->rel_ts.nsecs/1000;
434 while(comparetimes((struct timeval *)&(buffer[strinfo->element.first]),
435 (struct timeval *)&(buffer[strinfo->element.last]), burstint)){
436 strinfo->element.first++;
437 if(strinfo->element.first >= buffsize) strinfo->element.first = strinfo->element.first % buffsize;
440 strinfo->element.burstsize = diff;
441 if(strinfo->element.burstsize > strinfo->element.topburstsize) {
442 strinfo->element.topburstsize = strinfo->element.burstsize;
443 strinfo->element.maxbw = (float)(strinfo->element.topburstsize) * 1000 / burstint * pinfo->fd->pkt_len * 8 / 1000000;
446 strinfo->element.last++;
447 if(strinfo->element.last >= buffsize) strinfo->element.last = strinfo->element.last % buffsize;
449 if((strinfo->element.burstsize >= trigger) && (strinfo->element.burststatus == 0)){
450 strinfo->element.burststatus = 1;
451 strinfo->element.numbursts++;
452 } else if(strinfo->element.burstsize < trigger){
453 strinfo->element.burststatus = 0;
456 strinfo->element.count++;