3 * Copyright 2006, Iskratel , Slovenia
4 * By Jakob Bratkovic <j.bratkovic@iskratel.si> and
5 * Miha Jemec <m.jemec@iskratel.si>
7 * based on rtp_stream.c
8 * Copyright 2003, Alcatel Business Systems
9 * By Lars Ruoff <lars.ruoff@gmx.net>
11 * Wireshark - Network traffic analyzer
12 * By Gerald Combs <gerald@wireshark.org>
13 * Copyright 1998 Gerald Combs
15 * This program is free software; you can redistribute it and/or
16 * modify it under the terms of the GNU General Public License
17 * as published by the Free Software Foundation; either version 2
18 * of the License, or (at your option) any later version.
20 * This program is distributed in the hope that it will be useful,
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 * GNU General Public License for more details.
25 * You should have received a copy of the GNU General Public License
26 * along with this program; if not, write to the Free Software
27 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
44 #include <epan/epan.h>
45 #include <epan/address.h>
46 #include <epan/packet.h>
48 #include <epan/to_str.h>
50 #include "ui/alert_box.h"
51 #include "ui/mcast_stream.h"
52 #include "ui/simple_dialog.h"
54 #ifdef HAVE_WINSOCK2_H
58 gint32 mcast_stream_trigger = 50; /* limit for triggering the burst alarm (in packets per second) */
59 gint32 mcast_stream_bufferalarm = 10000; /* limit for triggering the buffer alarm (in bytes) */
60 guint16 mcast_stream_burstint = 100; /* burst interval in ms */
61 gint32 mcast_stream_emptyspeed = 5000; /* outgoing speed for single stream (kbps)*/
62 gint32 mcast_stream_cumulemptyspeed = 100000; /* outgoiong speed for all streams (kbps)*/
64 /* sliding window and buffer usage */
65 static gint32 buffsize = (int)((double)MAX_SPEED * 100 / 1000) * 2;
66 static guint16 comparetimes(struct timeval *t1, struct timeval *t2, guint16 burstint_lcl);
67 static void buffusagecalc(mcast_stream_info_t *strinfo, packet_info *pinfo, double emptyspeed_lcl);
68 static void slidingwindow(mcast_stream_info_t *strinfo, packet_info *pinfo);
71 /****************************************************************************/
72 /* GCompareFunc style comparison function for _mcast_stream_info */
74 mcast_stream_info_cmp(gconstpointer aa, gconstpointer bb)
76 const struct _mcast_stream_info* a = (const struct _mcast_stream_info *)aa;
77 const struct _mcast_stream_info* b = (const struct _mcast_stream_info *)bb;
81 if (a==NULL || b==NULL)
83 if (ADDRESSES_EQUAL(&(a->src_addr), &(b->src_addr))
84 && (a->src_port == b->src_port)
85 && ADDRESSES_EQUAL(&(a->dest_addr), &(b->dest_addr))
86 && (a->dest_port == b->dest_port))
94 /****************************************************************************/
95 /* when there is a [re]reading of packet's */
97 mcaststream_reset(mcaststream_tapinfo_t *tapinfo)
101 /* free the data items first */
102 list = g_list_first(tapinfo->strinfo_list);
105 /* XYZ I don't know how to clean this */
106 /*g_free(list->element.buff); */
108 list = g_list_next(list);
110 g_list_free(tapinfo->strinfo_list);
111 tapinfo->strinfo_list = NULL;
113 /* XYZ and why does the line below causes a crach? */
114 /*g_free(tapinfo->allstreams->element.buff);*/
115 g_free(tapinfo->allstreams);
116 tapinfo->allstreams = NULL;
118 tapinfo->nstreams = 0;
119 tapinfo->npackets = 0;
121 ++(tapinfo->launch_count);
127 mcaststream_reset_cb(void *arg)
129 mcaststream_reset((mcaststream_tapinfo_t *)arg);
132 /****************************************************************************/
133 /* redraw the output */
135 mcaststream_draw(void *ti_ptr)
137 mcaststream_tapinfo_t *tapinfo = (mcaststream_tapinfo_t *)ti_ptr;
138 /* XXX: see mcaststream_on_update in mcast_streams_dlg.c for comments
139 g_signal_emit_by_name(top_level, "signal_mcaststream_update");
141 if (tapinfo && tapinfo->tap_draw) {
142 tapinfo->tap_draw(ti_ptr);
149 /****************************************************************************/
150 /* whenever a udp packet is seen by the tap listener */
152 mcaststream_packet(void *arg, packet_info *pinfo, epan_dissect_t *edt _U_, const void *arg2 _U_)
154 mcaststream_tapinfo_t *tapinfo = (mcaststream_tapinfo_t *)arg;
155 mcast_stream_info_t tmp_strinfo;
156 mcast_stream_info_t *strinfo = NULL;
160 /* gather infos on the stream this packet is part of */
161 COPY_ADDRESS(&(tmp_strinfo.src_addr), &(pinfo->src));
162 tmp_strinfo.src_port = pinfo->srcport;
163 COPY_ADDRESS(&(tmp_strinfo.dest_addr), &(pinfo->dst));
164 tmp_strinfo.dest_port = pinfo->destport;
166 /* first we ignore non multicast packets; we filter out only those ethernet packets
167 * which start with the 01:00:5E multicast address (for IPv4) and 33:33 multicast
168 * address (for IPv6).
170 if ((pinfo->dl_dst.type != AT_ETHER) ||
171 ((g_ascii_strncasecmp("01005E", bytes_to_str(pinfo->pool, (const guint8 *)pinfo->dl_dst.data, pinfo->dl_dst.len), 6) != 0) &&
172 (g_ascii_strncasecmp("3333", bytes_to_str(pinfo->pool, (const guint8 *)pinfo->dl_dst.data, pinfo->dl_dst.len), 4) != 0)) )
175 /* check whether we already have a stream with these parameters in the list */
176 list = g_list_first(tapinfo->strinfo_list);
179 if (mcast_stream_info_cmp(&tmp_strinfo, (mcast_stream_info_t*)(list->data))==0)
181 strinfo = (mcast_stream_info_t*)(list->data); /*found!*/
184 list = g_list_next(list);
187 /* not in the list? then create a new entry */
189 /*printf("nov sip %s sp %d dip %s dp %d\n", address_to_display(NULL, &(pinfo->src)),
190 pinfo->srcport, address_to_display(NULL, &(pinfo->dst)), pinfo->destport);*/
191 tmp_strinfo.npackets = 0;
192 tmp_strinfo.apackets = 0;
193 tmp_strinfo.first_frame_num = pinfo->fd->num;
194 tmp_strinfo.start_sec = (guint32) pinfo->fd->abs_ts.secs;
195 tmp_strinfo.start_usec = pinfo->fd->abs_ts.nsecs/1000;
196 tmp_strinfo.start_rel_sec = (guint32) pinfo->rel_ts.secs;
197 tmp_strinfo.start_rel_usec = pinfo->rel_ts.nsecs/1000;
198 tmp_strinfo.vlan_id = 0;
200 /* reset Mcast stats */
201 tmp_strinfo.average_bw = 0;
202 tmp_strinfo.total_bytes = 0;
204 /* reset slidingwindow and buffer parameters */
205 tmp_strinfo.element.buff = (struct timeval *)g_malloc(buffsize * sizeof(struct timeval));
206 tmp_strinfo.element.first=0;
207 tmp_strinfo.element.last=0;
208 tmp_strinfo.element.burstsize=1;
209 tmp_strinfo.element.topburstsize=1;
210 tmp_strinfo.element.numbursts=0;
211 tmp_strinfo.element.burststatus=0;
212 tmp_strinfo.element.count=1;
213 tmp_strinfo.element.buffusage=pinfo->fd->pkt_len;
214 tmp_strinfo.element.topbuffusage=pinfo->fd->pkt_len;
215 tmp_strinfo.element.numbuffalarms=0;
216 tmp_strinfo.element.buffstatus=0;
217 tmp_strinfo.element.maxbw=0;
219 strinfo = (mcast_stream_info_t *)g_malloc(sizeof(mcast_stream_info_t));
220 *strinfo = tmp_strinfo; /* memberwise copy of struct */
221 tapinfo->strinfo_list = g_list_append(tapinfo->strinfo_list, strinfo);
222 strinfo->element.buff = (struct timeval *)g_malloc(buffsize * sizeof(struct timeval));
224 /* set time with the first packet */
225 if (tapinfo->npackets == 0) {
226 tapinfo->allstreams = (mcast_stream_info_t *)g_malloc(sizeof(mcast_stream_info_t));
227 tapinfo->allstreams->element.buff =
228 (struct timeval *)g_malloc(buffsize * sizeof(struct timeval));
229 tapinfo->allstreams->start_rel_sec = (guint32) pinfo->rel_ts.secs;
230 tapinfo->allstreams->start_rel_usec = pinfo->rel_ts.nsecs/1000;
231 tapinfo->allstreams->total_bytes = 0;
232 tapinfo->allstreams->element.first=0;
233 tapinfo->allstreams->element.last=0;
234 tapinfo->allstreams->element.burstsize=1;
235 tapinfo->allstreams->element.topburstsize=1;
236 tapinfo->allstreams->element.numbursts=0;
237 tapinfo->allstreams->element.burststatus=0;
238 tapinfo->allstreams->element.count=1;
239 tapinfo->allstreams->element.buffusage=pinfo->fd->pkt_len;
240 tapinfo->allstreams->element.topbuffusage=pinfo->fd->pkt_len;
241 tapinfo->allstreams->element.numbuffalarms=0;
242 tapinfo->allstreams->element.buffstatus=0;
243 tapinfo->allstreams->element.maxbw=0;
247 /* time between first and last packet in the group */
248 strinfo->stop_rel_sec = (guint32) pinfo->rel_ts.secs;
249 strinfo->stop_rel_usec = pinfo->rel_ts.nsecs/1000;
250 deltatime = ((float)((strinfo->stop_rel_sec * 1000000 + strinfo->stop_rel_usec)
251 - (strinfo->start_rel_sec*1000000 + strinfo->start_rel_usec)))/1000000;
253 /* calculate average bandwidth for this stream */
254 strinfo->total_bytes = strinfo->total_bytes + pinfo->fd->pkt_len;
256 strinfo->average_bw = (((float)(strinfo->total_bytes*8) / deltatime) / 1000000);
258 /* increment the packets counter for this stream and calculate average pps */
259 ++(strinfo->npackets);
260 strinfo->apackets = (guint32) (strinfo->npackets / deltatime);
262 /* time between first and last packet in any group */
263 tapinfo->allstreams->stop_rel_sec = (guint32) pinfo->rel_ts.secs;
264 tapinfo->allstreams->stop_rel_usec = pinfo->rel_ts.nsecs/1000;
265 deltatime = ((float)((tapinfo->allstreams->stop_rel_sec * 1000000 + tapinfo->allstreams->stop_rel_usec)
266 - (tapinfo->allstreams->start_rel_sec*1000000 + tapinfo->allstreams->start_rel_usec)))/1000000;
268 /* increment the packets counter of all streams */
269 ++(tapinfo->npackets);
271 /* calculate average bandwidth for all streams */
272 tapinfo->allstreams->total_bytes = tapinfo->allstreams->total_bytes + pinfo->fd->pkt_len;
274 tapinfo->allstreams->average_bw = (((float)(tapinfo->allstreams->total_bytes *8) / deltatime) / 1000000);
276 /* sliding window and buffercalc for this group*/
277 slidingwindow(strinfo, pinfo);
278 buffusagecalc(strinfo, pinfo, mcast_stream_emptyspeed*1000);
279 /* sliding window and buffercalc for all groups */
280 slidingwindow(tapinfo->allstreams, pinfo);
281 buffusagecalc(tapinfo->allstreams, pinfo, mcast_stream_cumulemptyspeed*1000);
282 /* end of sliding window */
284 return 1; /* refresh output */
288 /****************************************************************************/
289 /* scan for Mcast streams */
291 mcaststream_scan(mcaststream_tapinfo_t *tapinfo, capture_file *cap_file)
293 gboolean was_registered;
295 if (!tapinfo || !cap_file) {
299 was_registered = tapinfo->is_registered;
300 if (!tapinfo->is_registered)
301 register_tap_listener_mcast_stream(tapinfo);
303 cf_retap_packets(cap_file);
306 remove_tap_listener_mcast_stream(tapinfo);
309 /****************************************************************************/
311 /****************************************************************************/
313 /****************************************************************************/
315 remove_tap_listener_mcast_stream(mcaststream_tapinfo_t *tapinfo)
317 if (tapinfo && tapinfo->is_registered) {
318 remove_tap_listener(tapinfo);
319 tapinfo->is_registered = FALSE;
324 /****************************************************************************/
326 register_tap_listener_mcast_stream(mcaststream_tapinfo_t *tapinfo)
328 GString *error_string;
334 if (!tapinfo->is_registered) {
335 error_string = register_tap_listener("udp", tapinfo,
336 NULL, 0, mcaststream_reset_cb, mcaststream_packet,
339 if (error_string != NULL) {
340 simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
341 "%s", error_string->str);
342 g_string_free(error_string, TRUE);
346 tapinfo->is_registered = TRUE;
350 /*******************************************************************************/
351 /* sliding window and buffer calculations */
353 /* compare two times */
355 comparetimes(struct timeval *t1, struct timeval *t2, guint16 burstint_lcl)
357 if(((t2->tv_sec - t1->tv_sec)*1000 + (t2->tv_usec - t1->tv_usec)/1000) > burstint_lcl){
364 /* calculate buffer usage */
366 buffusagecalc(mcast_stream_info_t *strinfo, packet_info *pinfo, double emptyspeed_lcl)
369 gint32 usec=0, cur, prev;
370 struct timeval *buffer;
373 buffer = strinfo->element.buff;
374 cur = strinfo->element.last;
386 sec = buffer[cur].tv_sec - buffer[prev].tv_sec;
387 usec = (gint32)buffer[cur].tv_usec - (gint32)buffer[prev].tv_usec;
388 timeelapsed = (double)usec/1000000 + (double)sec;
390 /* bytes added to buffer */
391 strinfo->element.buffusage+=pinfo->fd->pkt_len;
393 /* bytes cleared from buffer */
394 strinfo->element.buffusage-= (guint32) (timeelapsed * emptyspeed_lcl / 8);
396 if(strinfo->element.buffusage < 0) strinfo->element.buffusage=0;
397 if(strinfo->element.buffusage > strinfo->element.topbuffusage)
398 strinfo->element.topbuffusage = strinfo->element.buffusage;
399 /* check for buffer losses */
400 if((strinfo->element.buffusage >= mcast_stream_bufferalarm) && (strinfo->element.buffstatus == 0)){
401 strinfo->element.buffstatus = 1;
402 strinfo->element.numbuffalarms++;
403 } else if(strinfo->element.buffusage < mcast_stream_bufferalarm){
404 strinfo->element.buffstatus = 0;
410 /* sliding window calculation */
412 slidingwindow(mcast_stream_info_t *strinfo, packet_info *pinfo)
414 struct timeval *buffer;
417 buffer = strinfo->element.buff;
419 diff = strinfo->element.last - strinfo->element.first;
420 if(diff < 0) diff+=buffsize;
422 /* check if buffer is full */
423 if(diff >= (buffsize - 2)){
424 fprintf(stderr, "Warning: capture buffer full\n");
425 strinfo->element.first++;
426 if(strinfo->element.first >= buffsize) strinfo->element.first = strinfo->element.first % buffsize;
430 buffer[strinfo->element.last].tv_sec = (guint32) pinfo->rel_ts.secs;
431 buffer[strinfo->element.last].tv_usec = pinfo->rel_ts.nsecs/1000;
432 while(comparetimes((struct timeval *)&(buffer[strinfo->element.first]),
433 (struct timeval *)&(buffer[strinfo->element.last]), mcast_stream_burstint)){
434 strinfo->element.first++;
435 if(strinfo->element.first >= buffsize) strinfo->element.first = strinfo->element.first % buffsize;
438 strinfo->element.burstsize = diff;
439 if(strinfo->element.burstsize > strinfo->element.topburstsize) {
440 strinfo->element.topburstsize = strinfo->element.burstsize;
441 strinfo->element.maxbw = (float)(strinfo->element.topburstsize) * 1000 / mcast_stream_burstint * pinfo->fd->pkt_len * 8 / 1000000;
444 strinfo->element.last++;
445 if(strinfo->element.last >= buffsize) strinfo->element.last = strinfo->element.last % buffsize;
447 if((strinfo->element.burstsize >= mcast_stream_trigger) && (strinfo->element.burststatus == 0)){
448 strinfo->element.burststatus = 1;
449 strinfo->element.numbursts++;
450 } else if(strinfo->element.burstsize < mcast_stream_trigger){
451 strinfo->element.burststatus = 0;
454 strinfo->element.count++;
458 * Editor modelines - http://www.wireshark.org/tools/modelines.html
463 * indent-tabs-mode: nil
466 * vi: set shiftwidth=4 tabstop=8 expandtab:
467 * :indentSize=4:tabSize=8:noTabs=true: