aboutsummaryrefslogtreecommitdiff
path: root/src/lib/protocols/csgo.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/lib/protocols/csgo.c')
-rw-r--r--src/lib/protocols/csgo.c79
1 files changed, 47 insertions, 32 deletions
diff --git a/src/lib/protocols/csgo.c b/src/lib/protocols/csgo.c
index f316f96b7..a1f5e56ef 100644
--- a/src/lib/protocols/csgo.c
+++ b/src/lib/protocols/csgo.c
@@ -29,8 +29,8 @@
void ndpi_search_csgo(struct ndpi_detection_module_struct* ndpi_struct, struct ndpi_flow_struct* flow) {
struct ndpi_packet_struct* packet = &flow->packet;
- if (packet->udp != NULL) {
- if (packet->payload_packet_len < sizeof(uint32_t)) {
+ if(packet->udp != NULL) {
+ if(packet->payload_packet_len < sizeof(uint32_t)) {
NDPI_LOG_DBG2(ndpi_struct, "Short csgo packet\n");
return;
}
@@ -38,58 +38,65 @@ void ndpi_search_csgo(struct ndpi_detection_module_struct* ndpi_struct, struct n
uint32_t w = htonl(get_u_int32_t(packet->payload, 0));
NDPI_LOG_DBG2(ndpi_struct, "CSGO: word %08x\n", w);
- if (!flow->csgo_state && packet->payload_packet_len == 23 && w == 0xfffffffful) {
- if (!memcmp(packet->payload + 5, "connect0x", 9)) {
+ if(!flow->csgo_state && packet->payload_packet_len == 23 && w == 0xfffffffful) {
+ if(!memcmp(packet->payload + 5, "connect0x", 9)) {
flow->csgo_state++;
memcpy(flow->csgo_strid, packet->payload + 5, 18);
NDPI_LOG_DBG2(ndpi_struct, "Found csgo connect0x\n");
return;
}
}
- if (flow->csgo_state == 1 && packet->payload_packet_len >= 42 && w == 0xfffffffful) {
- if (!memcmp(packet->payload + 24, flow->csgo_strid, 18)) {
+
+ if(flow->csgo_state == 1 && packet->payload_packet_len >= 42 && w == 0xfffffffful) {
+ if(!memcmp(packet->payload + 24, flow->csgo_strid, 18)) {
flow->csgo_state++;
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_CSGO, NDPI_PROTOCOL_UNKNOWN);
NDPI_LOG_INFO( ndpi_struct, "found csgo connect0x reply\n");
return;
}
}
- if (packet->payload_packet_len == 8 && ( w == 0x3a180000 || w == 0x39180000) ) {
+
+ if(packet->payload_packet_len == 8 && ( w == 0x3a180000 || w == 0x39180000) ) {
NDPI_LOG_INFO( ndpi_struct, "found csgo udp 8b\n");
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_CSGO, NDPI_PROTOCOL_UNKNOWN);
return;
}
- if (packet->payload_packet_len >= 36 && w == 0x56533031ul) {
+
+ if(packet->payload_packet_len >= 36 && w == 0x56533031ul) {
NDPI_LOG_INFO( ndpi_struct, "found csgo udp\n");
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_CSGO, NDPI_PROTOCOL_UNKNOWN);
return;
}
- if (packet->payload_packet_len >= 36 && w == 0x01007364) {
+
+ if(packet->payload_packet_len >= 36 && w == 0x01007364) {
uint32_t w2 = htonl(get_u_int32_t(packet->payload, 4));
- if (w2 == 0x70696e67) {
+ if(w2 == 0x70696e67) {
NDPI_LOG_INFO( ndpi_struct, "found csgo udp ping\n");
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_CSGO, NDPI_PROTOCOL_UNKNOWN);
return;
}
}
- if (flow->csgo_s2 < 3 && (w & 0xffff0000ul) == 0x0d1d0000) {
+
+ if(flow->csgo_s2 < 3 && (w & 0xffff0000ul) == 0x0d1d0000) {
uint32_t w2 = get_u_int32_t(packet->payload, 2);
- if (packet->payload_packet_len == 13) {
- if (!flow->csgo_s2) {
+ if(packet->payload_packet_len == 13) {
+ if(!flow->csgo_s2) {
flow->csgo_id2 = w2;
flow->csgo_s2 = 1;
NDPI_LOG_DBG2( ndpi_struct, "Found csgo udp 0d1d step1\n");
return;
}
- if (flow->csgo_s2 == 1 && flow->csgo_id2 == w2) {
+
+ if(flow->csgo_s2 == 1 && flow->csgo_id2 == w2) {
NDPI_LOG_DBG2( ndpi_struct, "Found csgo udp 0d1d step1 DUP\n");
return;
}
flow->csgo_s2 = 3;
return;
}
- if (packet->payload_packet_len == 15) {
- if (flow->csgo_s2 == 1 && flow->csgo_id2 == w2) {
+
+ if(packet->payload_packet_len == 15) {
+ if(flow->csgo_s2 == 1 && flow->csgo_id2 == w2) {
NDPI_LOG_INFO( ndpi_struct, "found csgo udp 0d1d\n");
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_CSGO, NDPI_PROTOCOL_UNKNOWN);
return;
@@ -97,31 +104,39 @@ void ndpi_search_csgo(struct ndpi_detection_module_struct* ndpi_struct, struct n
}
flow->csgo_s2 = 3;
}
- if (packet->payload_packet_len >= 140 && (w == 0x02124c6c || w == 0x02125c6c) &&
+
+ if(packet->payload_packet_len >= 140 && (w == 0x02124c6c || w == 0x02125c6c) &&
!memcmp(&packet->payload[3], "lta\000mob\000tpc\000bhj\000bxd\000tae\000urg\000gkh\000", 32)) {
- NDPI_LOG_INFO( ndpi_struct, "found csgo dictionary udp\n");
- ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_CSGO, NDPI_PROTOCOL_UNKNOWN);
- return;
+ NDPI_LOG_INFO( ndpi_struct, "found csgo dictionary udp\n");
+ ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_CSGO, NDPI_PROTOCOL_UNKNOWN);
+ return;
}
- if (packet->payload_packet_len >= 33 && packet->iph && packet->iph->daddr == 0xffffffff &&
+
+ if(packet->payload_packet_len >= 33 && packet->iph && packet->iph->daddr == 0xffffffff &&
!memcmp(&packet->payload[17], "LanSearch", 9)) {
- NDPI_LOG_INFO( ndpi_struct, "found csgo LanSearch udp\n");
- ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_CSGO, NDPI_PROTOCOL_UNKNOWN);
- return;
+ NDPI_LOG_INFO( ndpi_struct, "found csgo LanSearch udp\n");
+ ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_CSGO, NDPI_PROTOCOL_UNKNOWN);
+ return;
+ }
+
+ if(w == 0) {
+ NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+ return;
}
}
- if (flow->packet_counter > 20)
- NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+
+ if(flow->packet_counter > 5)
+ NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
}
void init_csgo_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id, NDPI_PROTOCOL_BITMASK *detection_bitmask)
{
- ndpi_set_bitmask_protocol_detection("CSGO", ndpi_struct, detection_bitmask, *id,
- NDPI_PROTOCOL_CSGO,
- ndpi_search_csgo,
- NDPI_SELECTION_BITMASK_PROTOCOL_UDP_WITH_PAYLOAD,
- SAVE_DETECTION_BITMASK_AS_UNKNOWN,
- ADD_TO_DETECTION_BITMASK);
+ ndpi_set_bitmask_protocol_detection("CSGO", ndpi_struct, detection_bitmask, *id,
+ NDPI_PROTOCOL_CSGO,
+ ndpi_search_csgo,
+ NDPI_SELECTION_BITMASK_PROTOCOL_UDP_WITH_PAYLOAD,
+ SAVE_DETECTION_BITMASK_AS_UNKNOWN,
+ ADD_TO_DETECTION_BITMASK);
*id += 1;
}
Powered by cgit, Themed by Ted Yin.