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Added Zoom screen share detection

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This commit is contained in:
Luca Deri 2022-12-09 21:32:45 +01:00
parent fc7b070030
commit eacc2b8e32
4 changed files with 22 additions and 4 deletions
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17
src/lib/protocols/rtp.c
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@ -100,7 +100,7 @@ PACK_ON struct zoom_sfu_encapsulation {
} PACK_OFF;
PACK_ON struct zoom_media_encapsulation {
u_int8_t enc_type; /* 15 = Audio, 16 = Video, 34 = RTCP */
u_int8_t enc_type; /* 13/30 = Screen Share, 15 = Audio, 16 = Video, 33/34/35 = RTCP */
u_int32_t unknown_1, unknown_2;
u_int16_t sequence_num;
u_int32_t timestamp;
@ -128,6 +128,12 @@ static u_int8_t isZoom(u_int16_t sport, u_int16_t dport,
*zoom_stream_type = enc->enc_type;
switch(enc->enc_type) {
case 13: /* Screen Share */
case 30: /* Screen Share */
*is_rtp = 0;
*payload_offset = 27;
break;
case 15: /* Audio */
*is_rtp = 0;
*payload_offset = 27;
@ -137,8 +143,10 @@ static u_int8_t isZoom(u_int16_t sport, u_int16_t dport,
*is_rtp = 1;
*payload_offset = 32;
break;
case 33: /* RTCP */
case 34: /* RTCP */
case 35: /* RTCP */
*is_rtp = 1;
*payload_offset = 36;
break;
@ -184,6 +192,11 @@ static void ndpi_rtp_search(struct ndpi_detection_module_struct *ndpi_struct,
*/
switch(zoom_stream_type) {
case 13: /* Screen Share */
case 30: /* Screen Share */
flow->protos.rtp.stream_type = rtp_screen_share;
break;
case 15: /* Audio */
flow->protos.rtp.stream_type = rtp_audio;
break;