static void ndpi_check_pplive_udp2(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) {
struct ndpi_packet_struct *packet = &flow->packet;
u_int32_t payload_len = packet->payload_packet_len;
/* Check if we so far detected the protocol in the request or not. */
if (flow->pplive_stage2 == 0) {
NDPI_LOG(NDPI_PROTOCOL_PPLIVE, ndpi_struct, NDPI_LOG_DEBUG, "PPLIVE stage 0: \n");
if ((payload_len == 57) && match_first_bytes(packet->payload, "\xe9\x03\x41\x01")) {
NDPI_LOG(NDPI_PROTOCOL_PPLIVE, ndpi_struct, NDPI_LOG_DEBUG, "Possible PPLIVE request detected, we will look further for the response...\n");
/* Encode the direction of the packet in the stage, so we will know when we need to look for the response packet. */
flow->pplive_stage2 = packet->packet_direction + 1; // packet_direction 0: stage 1, packet_direction 1: stage 2
}
} else {
NDPI_LOG(NDPI_PROTOCOL_PPLIVE, ndpi_struct, NDPI_LOG_DEBUG, "PPLIVE stage %u: \n", flow->pplive_stage2);
/* At first check, if this is for sure a response packet (in another direction. If not, do nothing now and return. */
if ((flow->pplive_stage2 - packet->packet_direction) == 1) {
return;
}
/* This is a packet in another direction. Check if we find the proper response. */
if (payload_len == 0) {
NDPI_LOG(NDPI_PROTOCOL_PPLIVE, ndpi_struct, NDPI_LOG_DEBUG, "Found PPLIVE.\n");
ndpi_int_pplive_add_connection(ndpi_struct, flow);
} else {
NDPI_LOG(NDPI_PROTOCOL_PPLIVE, ndpi_struct, NDPI_LOG_DEBUG, "The reply did not seem to belong to PPLIVE, resetting the stage to 0...\n");
flow->pplive_stage2 = 0;
}
}
}
static void ndpi_check_pando_tcp(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) {
struct ndpi_packet_struct *packet = &flow->packet;
u_int32_t payload_len = packet->payload_packet_len;
if ((payload_len > 0) && match_first_bytes(packet->payload, "\x0ePan")) {
NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "Found PANDO.\n");
ndpi_int_pando_add_connection(ndpi_struct, flow);
}
}
static void ndpi_check_pando_udp(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) {
struct ndpi_packet_struct *packet = &flow->packet;
u_int32_t payload_len = packet->payload_packet_len;
/* Check if we so far detected the protocol in the request or not. */
if (flow->pando_stage == 0) {
NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "PANDO stage 0: \n");
if ((payload_len >= 4) && (packet->payload[0] == 0x00) && (packet->payload[1] == 0x00) && (packet->payload[2] == 0x00) && (packet->payload[3] == 0x09)) {
NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "Possible PANDO request detected, we will look further for the response...\n");
/* Encode the direction of the packet in the stage, so we will know when we need to look for the response packet. */
flow->pando_stage = packet->packet_direction + 1; // packet_direction 0: stage 1, packet_direction 1: stage 2
return;
}
if ((payload_len > 0) && match_first_bytes(packet->payload, "UDPA")) {
NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "Possible PANDO request detected, we will look further for the response...\n");
/* Encode the direction of the packet in the stage, so we will know when we need to look for the response packet. */
flow->pando_stage = packet->packet_direction + 3; // packet_direction 0: stage 3, packet_direction 1: stage 4
return;
}
if ((payload_len > 0) && (match_first_bytes(packet->payload, "UDPR") || match_first_bytes(packet->payload, "UDPE"))) {
NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "Possible PANDO request detected, we will look further for the response...\n");
/* Encode the direction of the packet in the stage, so we will know when we need to look for the response packet. */
flow->pando_stage = packet->packet_direction + 5; // packet_direction 0: stage 5, packet_direction 1: stage 6
return;
}
} else if ((flow->pando_stage == 1) || (flow->pando_stage == 2)) {
NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "PANDO stage %u: \n", flow->pando_stage);
/* At first check, if this is for sure a response packet (in another direction. If not, do nothing now and return. */
if ((flow->pando_stage - packet->packet_direction) == 1) {
return;
}
/* This is a packet in another direction. Check if we find the proper response. */
if ((payload_len == 0) || ((payload_len >= 4) && (packet->payload[0] == 0x00) && (packet->payload[1] == 0x00) && (packet->payload[2] == 0x00) && (packet->payload[3] == 0x09))) {
NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "Found PANDO.\n");
ndpi_int_pando_add_connection(ndpi_struct, flow);
} else {
NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "The reply did not seem to belong to PANDO, resetting the stage to 0...\n");
flow->pando_stage = 0;
}
} else if ((flow->pando_stage == 3) || (flow->pando_stage == 4)) {
NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "PANDO stage %u: \n", flow->pando_stage);
/* At first check, if this is for sure a response packet (in another direction. If not, do nothing now and return. */
if ((flow->pando_stage - packet->packet_direction) == 3) {
return;
}
/* This is a packet in another direction. Check if we find the proper response. */
if ((payload_len == 0) || match_first_bytes(packet->payload, "UDPR") || match_first_bytes(packet->payload, "UDPE")) {
NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "Found PANDO.\n");
ndpi_int_pando_add_connection(ndpi_struct, flow);
} else {
NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "The reply did not seem to belong to PANDO, resetting the stage to 0...\n");
flow->pando_stage = 0;
}
} else if ((flow->pando_stage == 5) || (flow->pando_stage == 6)) {
NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "PANDO stage %u: \n", flow->pando_stage);
/* At first check, if this is for sure a response packet (in another direction. If not, do nothing now and return. */
if ((flow->pando_stage - packet->packet_direction) == 5) {
return;
}
/* This is a packet in another direction. Check if we find the proper response. */
if ((payload_len > 0) && match_first_bytes(packet->payload, "UDPA")) {
NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "Found PANDO.\n");
ndpi_int_pando_add_connection(ndpi_struct, flow);
} else {
NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "The reply did not seem to belong to PANDO, resetting the stage to 0...\n");
flow->pando_stage = 0;
}
}
}
static void ndpi_check_steam_tcp(struct ndpi_detection_module_struct
*ndpi_struct, struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct *packet = &flow->packet;
u_int32_t payload_len = packet->payload_packet_len;
if (flow->steam_stage == 0) {
NDPI_LOG(NDPI_PROTOCOL_STEAM, ndpi_struct, NDPI_LOG_DEBUG,
"STEAM stage 0: \n");
if (((payload_len == 1) || (payload_len == 4)
|| (payload_len == 5))
&& match_first_bytes(packet->payload, "\x01\x00\x00\x00")) {
NDPI_LOG(NDPI_PROTOCOL_STEAM, ndpi_struct,
NDPI_LOG_DEBUG,
"Possible STEAM request detected, we will look further for the response...\n");
/* Encode the direction of the packet in the stage, so we will know when we need to look for the response packet. */
flow->steam_stage = packet->packet_direction + 1; // packet_direction 0: stage 1, packet_direction 1: stage 2
return;
}
if (((payload_len == 1) || (payload_len == 4)
|| (payload_len == 5)) && (packet->payload[0] == 0x00)
&& (packet->payload[1] == 0x00)
&& (packet->payload[2] == 0x00)) {
NDPI_LOG(NDPI_PROTOCOL_STEAM, ndpi_struct,
NDPI_LOG_DEBUG,
"Possible STEAM request detected, we will look further for the response...\n");
/* Encode the direction of the packet in the stage, so we will know when we need to look for the response packet. */
flow->steam_stage = packet->packet_direction + 3; // packet_direction 0: stage 3, packet_direction 1: stage 4
return;
}
} else if ((flow->steam_stage == 1) || (flow->steam_stage == 2)) {
NDPI_LOG(NDPI_PROTOCOL_STEAM, ndpi_struct, NDPI_LOG_DEBUG,
"STEAM stage %u: \n", flow->steam_stage);
/* At first check, if this is for sure a response packet (in another direction. If not, do nothing now and return. */
if ((flow->steam_stage - packet->packet_direction) == 1) {
return;
}
/* This is a packet in another direction. Check if we find the proper response. */
if (((payload_len == 1) || (payload_len == 4)
|| (payload_len == 5)) && (packet->payload[0] == 0x00)
&& (packet->payload[1] == 0x00)
&& (packet->payload[2] == 0x00)) {
NDPI_LOG(NDPI_PROTOCOL_STEAM, ndpi_struct,
NDPI_LOG_DEBUG, "Found STEAM.\n");
ndpi_int_steam_add_connection(ndpi_struct, flow);
} else {
NDPI_LOG(NDPI_PROTOCOL_STEAM, ndpi_struct,
NDPI_LOG_DEBUG,
"The reply did not seem to belong to STEAM, resetting the stage to 0...\n");
flow->steam_stage = 0;
}
} else if ((flow->steam_stage == 3) || (flow->steam_stage == 4)) {
NDPI_LOG(NDPI_PROTOCOL_STEAM, ndpi_struct, NDPI_LOG_DEBUG,
"STEAM stage %u: \n", flow->steam_stage);
/* At first check, if this is for sure a response packet (in another direction. If not, do nothing now and return. */
if ((flow->steam_stage - packet->packet_direction) == 3) {
return;
}
/* This is a packet in another direction. Check if we find the proper response. */
if (((payload_len == 1) || (payload_len == 4)
|| (payload_len == 5))
&& match_first_bytes(packet->payload, "\x01\x00\x00\x00")) {
NDPI_LOG(NDPI_PROTOCOL_STEAM, ndpi_struct,
NDPI_LOG_DEBUG, "Found STEAM.\n");
ndpi_int_steam_add_connection(ndpi_struct, flow);
} else {
NDPI_LOG(NDPI_PROTOCOL_STEAM, ndpi_struct,
NDPI_LOG_DEBUG,
"The reply did not seem to belong to STEAM, resetting the stage to 0...\n");
flow->steam_stage = 0;
}
}
}