Adding upstream version 4.2.2.upstream/4.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 422 insertions, 0 deletions

diff --git a/ui/mcast_stream.c b/ui/mcast_stream.c
new file mode 100644
index 00000000..44f8f22e
--- /dev/null
+++ b/ui/mcast_stream.c
@@ -0,0 +1,422 @@
+/* mcast_stream.c
+ *
+ * Copyright 2006, Iskratel , Slovenia
+ * By Jakob Bratkovic <j.bratkovic@iskratel.si> and
+ * Miha Jemec <m.jemec@iskratel.si>
+ *
+ * based on rtp_stream.c
+ * Copyright 2003, Alcatel Business Systems
+ * By Lars Ruoff <lars.ruoff@gmx.net>
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "config.h"
+
+#include <glib.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <string.h>
+
+#include "file.h"
+
+#include <epan/epan.h>
+#include <epan/address.h>
+#include <epan/packet.h>
+#include <epan/tap.h>
+#include <epan/to_str.h>
+
+#include "ui/mcast_stream.h"
+
+gint32  mcast_stream_trigger         =     50; /* limit for triggering the burst alarm (in packets per second) */
+gint32  mcast_stream_bufferalarm     =  10000; /* limit for triggering the buffer alarm (in bytes) */
+guint16 mcast_stream_burstint        =    100; /* burst interval in ms */
+gint32  mcast_stream_emptyspeed      =   5000; /* outgoing speed for single stream (kbps)*/
+gint32  mcast_stream_cumulemptyspeed = 100000; /* outgoiong speed for all streams (kbps)*/
+
+/* sliding window and buffer usage */
+static gint32  buffsize = (int)((double)MAX_SPEED * 100 / 1000) * 2;
+static guint16 comparetimes(nstime_t *t1, nstime_t *t2, guint16 burstint_lcl);
+static void    buffusagecalc(mcast_stream_info_t *strinfo, packet_info *pinfo, double emptyspeed_lcl);
+static void    slidingwindow(mcast_stream_info_t *strinfo, packet_info *pinfo);
+
+/****************************************************************************/
+/* GCompareFunc style comparison function for _mcast_stream_info */
+static gint
+mcast_stream_info_cmp(gconstpointer aa, gconstpointer bb)
+{
+    const struct _mcast_stream_info* a = (const struct _mcast_stream_info *)aa;
+    const struct _mcast_stream_info* b = (const struct _mcast_stream_info *)bb;
+
+    if (a==b)
+        return 0;
+    if (a==NULL || b==NULL)
+        return 1;
+    if (addresses_equal(&(a->src_addr), &(b->src_addr))
+        && (a->src_port == b->src_port)
+        && addresses_equal(&(a->dest_addr), &(b->dest_addr))
+        && (a->dest_port == b->dest_port))
+        return 0;
+    else
+        return 1;
+
+}
+
+
+/****************************************************************************/
+/* when there is a [re]reading of packet's */
+void
+mcaststream_reset(mcaststream_tapinfo_t *tapinfo)
+{
+    GList* list;
+
+    /* free the data items first */
+    list = g_list_first(tapinfo->strinfo_list);
+    while (list)
+    {
+        /* XYZ I don't know how to clean this */
+        /*g_free(list->element.buff); */
+        g_free(list->data);
+        list = g_list_next(list);
+    }
+    g_list_free(tapinfo->strinfo_list);
+    tapinfo->strinfo_list = NULL;
+
+    /* XYZ and why does the line below causes a crach? */
+    /*g_free(tapinfo->allstreams->element.buff);*/
+    g_free(tapinfo->allstreams);
+    tapinfo->allstreams = NULL;
+
+    tapinfo->npackets = 0;
+
+    return;
+}
+
+static void
+mcaststream_reset_cb(void *ti_ptr)
+{
+    mcaststream_tapinfo_t *tapinfo = (mcaststream_tapinfo_t *)ti_ptr;
+    if (tapinfo) {
+        if (tapinfo->tap_reset) {
+           tapinfo->tap_reset(tapinfo);
+        }
+        mcaststream_reset(tapinfo);
+    }
+}
+
+/****************************************************************************/
+/* redraw the output */
+static void
+mcaststream_draw(void *ti_ptr)
+{
+    mcaststream_tapinfo_t *tapinfo = (mcaststream_tapinfo_t *)ti_ptr;
+/* XXX: see mcaststream_on_update in mcast_streams_dlg.c for comments
+    g_signal_emit_by_name(top_level, "signal_mcaststream_update");
+*/
+    if (tapinfo && tapinfo->tap_draw) {
+        tapinfo->tap_draw(tapinfo);
+    }
+    return;
+}
+
+
+
+/****************************************************************************/
+/* whenever a udp packet is seen by the tap listener */
+tap_packet_status
+mcaststream_packet(void *arg, packet_info *pinfo, epan_dissect_t *edt _U_, const void *arg2 _U_, tap_flags_t flags _U_)
+{
+    mcaststream_tapinfo_t *tapinfo = (mcaststream_tapinfo_t *)arg;
+    mcast_stream_info_t tmp_strinfo;
+    mcast_stream_info_t *strinfo = NULL;
+    GList* list;
+    nstime_t delta;
+    double deltatime;
+
+    /*
+     * Restrict statistics to standard multicast IPv4 and IPv6 addresses.
+     * We might want to check for and allow ethernet addresses starting
+     * with 01:00:05 and 33:33 as well.
+     */
+    switch (pinfo->net_dst.type) {
+        case AT_IPv4:
+            /* 224.0.0.0/4 */
+            if (pinfo->net_dst.len == 0 || (((const guint8*)pinfo->net_dst.data)[0] & 0xf0) != 0xe0)
+                return TAP_PACKET_DONT_REDRAW;
+            break;
+        case AT_IPv6:
+            /* ff00::/8 */
+            /* XXX This includes DHCPv6. */
+            if (pinfo->net_dst.len == 0 || ((const guint8*)pinfo->net_dst.data)[0] != 0xff)
+                return TAP_PACKET_DONT_REDRAW;
+            break;
+        default:
+            return TAP_PACKET_DONT_REDRAW;
+    }
+
+    /* gather infos on the stream this packet is part of */
+    copy_address(&(tmp_strinfo.src_addr), &(pinfo->net_src));
+    tmp_strinfo.src_port = pinfo->srcport;
+    copy_address(&(tmp_strinfo.dest_addr), &(pinfo->net_dst));
+    tmp_strinfo.dest_port = pinfo->destport;
+
+    /* check whether we already have a stream with these parameters in the list */
+    list = g_list_first(tapinfo->strinfo_list);
+    while (list)
+    {
+        if (mcast_stream_info_cmp(&tmp_strinfo, (mcast_stream_info_t*)(list->data))==0)
+        {
+            strinfo = (mcast_stream_info_t*)(list->data);  /*found!*/
+            break;
+        }
+        list = g_list_next(list);
+    }
+
+    /* not in the list? then create a new entry */
+    if (!strinfo) {
+        /*printf("nov sip %s sp %d dip %s dp %d\n", address_to_display(NULL, &(pinfo->src)),
+            pinfo->srcport, address_to_display(NULL, &(pinfo->dst)), pinfo->destport);*/
+        tmp_strinfo.npackets = 0;
+        tmp_strinfo.apackets = 0;
+        tmp_strinfo.first_frame_num = pinfo->num;
+        tmp_strinfo.start_abs = pinfo->abs_ts;
+        tmp_strinfo.start_rel = pinfo->rel_ts;
+        tmp_strinfo.vlan_id = 0;
+
+        /* reset Mcast stats */
+        tmp_strinfo.average_bw = 0;
+        tmp_strinfo.total_bytes = 0;
+
+        /* reset slidingwindow and buffer parameters */
+        tmp_strinfo.element.buff = g_new(nstime_t, buffsize);
+        tmp_strinfo.element.first=0;
+        tmp_strinfo.element.last=0;
+        tmp_strinfo.element.burstsize=1;
+        tmp_strinfo.element.topburstsize=1;
+        tmp_strinfo.element.numbursts=0;
+        tmp_strinfo.element.burststatus=0;
+        tmp_strinfo.element.count=1;
+        tmp_strinfo.element.buffusage=pinfo->fd->pkt_len;
+        tmp_strinfo.element.topbuffusage=pinfo->fd->pkt_len;
+        tmp_strinfo.element.numbuffalarms=0;
+        tmp_strinfo.element.buffstatus=0;
+        tmp_strinfo.element.maxbw=0;
+
+        strinfo = g_new(mcast_stream_info_t, 1);
+        *strinfo = tmp_strinfo;  /* memberwise copy of struct */
+        tapinfo->strinfo_list = g_list_append(tapinfo->strinfo_list, strinfo);
+        strinfo->element.buff = g_new(nstime_t, buffsize);
+
+        /* set time with the first packet */
+        if (tapinfo->npackets == 0) {
+            tapinfo->allstreams = g_new(mcast_stream_info_t, 1);
+            tapinfo->allstreams->element.buff =
+                    g_new(nstime_t, buffsize);
+            tapinfo->allstreams->start_rel = pinfo->rel_ts;
+            tapinfo->allstreams->total_bytes = 0;
+            tapinfo->allstreams->element.first=0;
+            tapinfo->allstreams->element.last=0;
+            tapinfo->allstreams->element.burstsize=1;
+            tapinfo->allstreams->element.topburstsize=1;
+            tapinfo->allstreams->element.numbursts=0;
+            tapinfo->allstreams->element.burststatus=0;
+            tapinfo->allstreams->element.count=1;
+            tapinfo->allstreams->element.buffusage=pinfo->fd->pkt_len;
+            tapinfo->allstreams->element.topbuffusage=pinfo->fd->pkt_len;
+            tapinfo->allstreams->element.numbuffalarms=0;
+            tapinfo->allstreams->element.buffstatus=0;
+            tapinfo->allstreams->element.maxbw=0;
+        }
+    }
+
+    /* time between first and last packet in the group */
+    strinfo->stop_rel = pinfo->rel_ts;
+    nstime_delta(&delta, &strinfo->stop_rel, &strinfo->start_rel);
+    deltatime = nstime_to_sec(&delta);
+
+    /* calculate average bandwidth for this stream */
+    strinfo->total_bytes = strinfo->total_bytes + pinfo->fd->pkt_len;
+
+    /* increment the packets counter for this stream and calculate average pps */
+    ++(strinfo->npackets);
+
+    if (deltatime > 0) {
+        strinfo->apackets = strinfo->npackets / deltatime;
+        strinfo->average_bw = ((double)(strinfo->total_bytes*8) / deltatime);
+    } else {
+        strinfo->apackets = strinfo->average_bw = 0.0;
+    }
+
+    /* time between first and last packet in any group */
+    tapinfo->allstreams->stop_rel = pinfo->rel_ts;
+    nstime_delta(&delta, &tapinfo->allstreams->stop_rel, &tapinfo->allstreams->start_rel);
+    deltatime = nstime_to_sec(&delta);
+
+    /* increment the packets counter of all streams */
+    ++(tapinfo->npackets);
+
+    /* calculate average bandwidth for all streams */
+    tapinfo->allstreams->total_bytes = tapinfo->allstreams->total_bytes + pinfo->fd->pkt_len;
+    if (deltatime > 0)
+        tapinfo->allstreams->average_bw = ((double)(tapinfo->allstreams->total_bytes*8) / deltatime);
+
+    /* sliding window and buffercalc for this group*/
+    slidingwindow(strinfo, pinfo);
+    buffusagecalc(strinfo, pinfo, mcast_stream_emptyspeed*1000);
+    /* sliding window and buffercalc for all groups */
+    slidingwindow(tapinfo->allstreams, pinfo);
+    buffusagecalc(tapinfo->allstreams, pinfo, mcast_stream_cumulemptyspeed*1000);
+    /* end of sliding window */
+
+    return TAP_PACKET_REDRAW;  /* refresh output */
+
+}
+
+/****************************************************************************/
+/* TAP INTERFACE */
+/****************************************************************************/
+
+/****************************************************************************/
+void
+remove_tap_listener_mcast_stream(mcaststream_tapinfo_t *tapinfo)
+{
+    if (tapinfo && tapinfo->is_registered) {
+        remove_tap_listener(tapinfo);
+        tapinfo->is_registered = FALSE;
+    }
+}
+
+
+/****************************************************************************/
+GString *
+register_tap_listener_mcast_stream(mcaststream_tapinfo_t *tapinfo)
+{
+    GString *error_string;
+    if (!tapinfo) {
+        return NULL;
+    }
+
+    if (tapinfo->is_registered) {
+        return NULL;
+    }
+
+    error_string = register_tap_listener("udp", tapinfo,
+        NULL, 0, mcaststream_reset_cb, mcaststream_packet,
+        mcaststream_draw, NULL);
+
+    if (NULL == error_string) {
+        tapinfo->is_registered = TRUE;
+    }
+    return error_string;
+}
+
+/*******************************************************************************/
+/* sliding window and buffer calculations */
+
+/* compare two times */
+static guint16
+comparetimes(nstime_t *t1, nstime_t *t2, guint16 burstint_lcl)
+{
+    if(((t2->secs - t1->secs)*1000 + (t2->nsecs - t1->nsecs)/1000000) > burstint_lcl){
+        return 1;
+    } else{
+        return 0;
+    }
+}
+
+/* calculate buffer usage */
+static void
+buffusagecalc(mcast_stream_info_t *strinfo, packet_info *pinfo, double emptyspeed_lcl)
+{
+    gint32 cur, prev;
+    nstime_t *buffer;
+    nstime_t delta;
+    double timeelapsed;
+
+    buffer = strinfo->element.buff;
+    cur = strinfo->element.last;
+    if(cur == 0){
+        cur = buffsize - 1;
+        prev = cur - 1;
+    } else if(cur == 1){
+        prev = buffsize - 1;
+        cur = 0;
+    } else{
+        cur=cur-1;
+        prev=cur-1;
+    }
+
+    nstime_delta(&delta, &buffer[cur], &buffer[prev]);
+    timeelapsed = nstime_to_sec(&delta);
+
+    /* bytes added to buffer */
+    strinfo->element.buffusage+=pinfo->fd->pkt_len;
+
+    /* bytes cleared from buffer */
+    strinfo->element.buffusage-= (guint32) (timeelapsed * emptyspeed_lcl / 8);
+
+    if(strinfo->element.buffusage < 0) strinfo->element.buffusage=0;
+    if(strinfo->element.buffusage > strinfo->element.topbuffusage)
+        strinfo->element.topbuffusage = strinfo->element.buffusage;
+    /* check for buffer losses */
+    if((strinfo->element.buffusage >= mcast_stream_bufferalarm) && (strinfo->element.buffstatus == 0)){
+        strinfo->element.buffstatus = 1;
+        strinfo->element.numbuffalarms++;
+    } else if(strinfo->element.buffusage < mcast_stream_bufferalarm){
+        strinfo->element.buffstatus = 0;
+    }
+
+    return;
+}
+
+/* sliding window calculation */
+static void
+slidingwindow(mcast_stream_info_t *strinfo, packet_info *pinfo)
+{
+    nstime_t *buffer;
+    gint32 diff;
+
+    buffer = strinfo->element.buff;
+
+    diff = strinfo->element.last - strinfo->element.first;
+    if(diff < 0) diff+=buffsize;
+
+    /* check if buffer is full */
+    if(diff >= (buffsize - 2)){
+        fprintf(stderr, "Warning: capture buffer full\n");
+        strinfo->element.first++;
+        if(strinfo->element.first >= buffsize) strinfo->element.first = strinfo->element.first % buffsize;
+    }
+
+    /* burst count */
+    buffer[strinfo->element.last] = pinfo->rel_ts;
+    while(comparetimes(&buffer[strinfo->element.first],
+                       &buffer[strinfo->element.last], mcast_stream_burstint)){
+        strinfo->element.first++;
+        if(strinfo->element.first >= buffsize) strinfo->element.first = strinfo->element.first % buffsize;
+        diff--;
+    }
+    strinfo->element.burstsize = diff;
+    if(strinfo->element.burstsize > strinfo->element.topburstsize) {
+        strinfo->element.topburstsize = strinfo->element.burstsize;
+        strinfo->element.maxbw = (double)(strinfo->element.topburstsize) * 1000 / mcast_stream_burstint * pinfo->fd->pkt_len * 8;
+    }
+
+    strinfo->element.last++;
+    if(strinfo->element.last >= buffsize) strinfo->element.last = strinfo->element.last % buffsize;
+    /* trigger check */
+    if((strinfo->element.burstsize >= mcast_stream_trigger) && (strinfo->element.burststatus == 0)){
+        strinfo->element.burststatus = 1;
+        strinfo->element.numbursts++;
+    } else if(strinfo->element.burstsize < mcast_stream_trigger){
+        strinfo->element.burststatus = 0;
+    }
+
+    strinfo->element.count++;
+}