diff options
author | Luca Deri <deri@ntop.org> | 2019-09-26 21:52:42 +0200 |
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committer | Luca Deri <deri@ntop.org> | 2019-09-26 21:52:42 +0200 |
commit | 0e9918464bb4e734cec0ef370ffc927926e2f810 (patch) | |
tree | c302fb790bf013c12fb49b2cdea9f70fa37ad080 /src/lib/protocols/zoom.c | |
parent | ce40155377fe7211da546c76de42d3c8024032b9 (diff) |
Added Zoom protocol support removing invalid STUN/Skype detections
Diffstat (limited to 'src/lib/protocols/zoom.c')
-rw-r--r-- | src/lib/protocols/zoom.c | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/src/lib/protocols/zoom.c b/src/lib/protocols/zoom.c deleted file mode 100644 index 341fb1c0f..000000000 --- a/src/lib/protocols/zoom.c +++ /dev/null @@ -1,130 +0,0 @@ -/* - * zoom.c - * - * Copyright (C) 2018 by ntop.org - * - * This file is part of nDPI, an open source deep packet inspection - * library based on the OpenDPI and PACE technology by ipoque GmbH - * - * nDPI is free software: you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * nDPI 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 Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public License - * along with nDPI. If not, see <http://www.gnu.org/licenses/>. - * - */ - -#include "ndpi_protocol_ids.h" - -#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_ZOOM - -#include "ndpi_api.h" - -static u_int8_t is_zoom_tcp_port(struct ndpi_flow_struct *flow) { - - struct ndpi_packet_struct *packet = &flow->packet; - u_int16_t dport = ntohs(packet->tcp->dest); - - if((dport == 8801) || (dport == 8802) || (dport == 5090) || (dport == 5091)){ - return 1; - } - return 0; -} - -static u_int8_t is_zoom_udp_port(struct ndpi_flow_struct *flow) { - - struct ndpi_packet_struct *packet = &flow->packet; - u_int16_t dport = ntohs(packet->tcp->dest); - - if((dport == 3478) || (dport == 3479) || (dport == 5090) || - (dport >= 8801 && dport <= 8810) || (dport >= 20000 && dport <= 64000)){ - return 1; - } - return 0; -} - -static u_int8_t zoom_ptree_match(struct ndpi_detection_module_struct *ndpi_struct, struct in_addr *pin) { - return((ndpi_network_ptree_match(ndpi_struct, pin) == NDPI_PROTOCOL_ZOOM) ? 1 : 0); -} - -/* ******************************************* */ - -static u_int8_t is_zoom_flow(struct ndpi_detection_module_struct *ndpi_struct, - struct ndpi_flow_struct *flow) { - struct ndpi_packet_struct *packet = &flow->packet; - - if(packet->iph) { - struct in_addr daddr; - - daddr.s_addr = packet->iph->daddr; - - if(zoom_ptree_match(ndpi_struct, &daddr)) { - return(1); - } - } - - return(0); -} - -static void ndpi_check_zoom(struct ndpi_detection_module_struct *ndpi_struct, - struct ndpi_flow_struct *flow) { - - struct ndpi_packet_struct *packet = &flow->packet; - - NDPI_LOG_DBG(ndpi_struct, "search Zoom video \n"); - - if(packet->tcp != NULL) - { - if (is_zoom_flow(ndpi_struct, flow) && is_zoom_tcp_port(flow)){ - NDPI_LOG_INFO(ndpi_struct, "found zoom on tcp\n"); - - ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_ZOOM, - NDPI_PROTOCOL_UNKNOWN); - return; - } - } - else if(packet->udp != NULL) - { - if (is_zoom_flow(ndpi_struct, flow) && is_zoom_udp_port(flow)){ - NDPI_LOG_INFO(ndpi_struct, "found zoom on udp\n"); - - ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_ZOOM, - NDPI_PROTOCOL_UNKNOWN); - return; - } - } - else - { - NDPI_EXCLUDE_PROTO(ndpi_struct, flow); - } -} - -void ndpi_search_zoom(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) -{ - struct ndpi_packet_struct *packet = &flow->packet; - - NDPI_LOG_DBG(ndpi_struct, "search zoom\n"); - - /* skip marked packets */ - if(packet->detected_protocol_stack[0] != NDPI_PROTOCOL_ZOOM) - ndpi_check_zoom(ndpi_struct, flow); -} - - -void init_zoom_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id, NDPI_PROTOCOL_BITMASK *detection_bitmask) -{ - ndpi_set_bitmask_protocol_detection("Zoom", ndpi_struct, detection_bitmask, *id, - NDPI_PROTOCOL_ZOOM, - ndpi_search_zoom, - NDPI_SELECTION_BITMASK_PROTOCOL_TCP_OR_UDP_WITH_PAYLOAD, - SAVE_DETECTION_BITMASK_AS_UNKNOWN, - ADD_TO_DETECTION_BITMASK); - *id += 1; -} |