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/*
* secondlife.c
*
* Copyright (C) 2009-2011 by ipoque GmbH
* Copyright (C) 2011-19 - 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_utils.h"
#ifdef NDPI_PROTOCOL_SECONDLIFE
static void ndpi_int_secondlife_add_connection(struct ndpi_detection_module_struct *ndpi_struct,
struct ndpi_flow_struct *flow/* , */
/* ndpi_protocol_type_t protocol_type */)
{
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_SECONDLIFE, protocol_type);
}
void ndpi_search_secondlife(struct ndpi_detection_module_struct
*ndpi_struct, struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct *packet = &flow->packet;
// struct ndpi_id_struct *src=ndpi_struct->src;
// struct ndpi_id_struct *dst=ndpi_struct->dst;
// if ((ntohs(packet->udp->dest) == 12035 || ntohs(packet->udp->dest) == 12036 || (ntohs(packet->udp->dest) >= 13000 && ntohs(packet->udp->dest) <= 13050)) //port
// && packet->payload_packet_len > 6 // min length with no extra header, high frequency and 1 byte message body
// && get_u_int8_t(packet->payload, 0) == 0x40 // reliable packet
// && ntohl(get_u_int32_t(packet->payload, 1)) == 0x00000001 // sequence number equals 1
// //ntohl (get_u_int32_t (packet->payload, 5)) == 0x00FFFF00 // no extra header, low frequency message - can't use, message may have higher frequency
// ) {
// NDPI_LOG(NDPI_PROTOCOL_SECONDLIFE, ndpi_struct, NDPI_LOG_DEBUG, "Second Life detected.\n");
// ndpi_int_secondlife_add_connection(ndpi_struct, flow);
// return;
// }
if (packet->tcp != NULL) {
if (packet->payload_packet_len > NDPI_STATICSTRING_LEN("GET /")
&& memcmp(packet->payload, "GET /", NDPI_STATICSTRING_LEN("GET /")) == 0) {
NDPI_LOG(NDPI_PROTOCOL_SECONDLIFE, ndpi_struct, NDPI_LOG_DEBUG, "Second Life HTTP 'GET /'' found.\n");
ndpi_parse_packet_line_info(ndpi_struct, flow);
if (packet->user_agent_line.ptr != NULL
&& packet->user_agent_line.len >
NDPI_STATICSTRING_LEN
("Mozilla/5.0 (Windows; U; Windows NT 6.1; de-DE) AppleWebKit/532.4 (KHTML, like Gecko) SecondLife/")
&& memcmp(&packet->user_agent_line.ptr[NDPI_STATICSTRING_LEN
("Mozilla/5.0 (Windows; U; Windows NT 6.1; de-DE) AppleWebKit/532.4 (KHTML, like Gecko) ")],
"SecondLife/", NDPI_STATICSTRING_LEN("SecondLife/")) == 0) {
NDPI_LOG(NDPI_PROTOCOL_SECONDLIFE, ndpi_struct, NDPI_LOG_DEBUG,
"Second Life TCP HTTP User Agent detected.\n");
ndpi_int_secondlife_add_connection(ndpi_struct, flow, NDPI_CORRELATED_PROTOCOL);
return;
}
if (packet->host_line.ptr != NULL && packet->host_line.len > NDPI_STATICSTRING_LEN(".agni.lindenlab.com:")) {
u_int8_t x;
for (x = 2; x < 6; x++) {
if (packet->host_line.ptr[packet->host_line.len - (1 + x)] == ':') {
if ((1 + x + NDPI_STATICSTRING_LEN(".agni.lindenlab.com")) < packet->host_line.len
&& memcmp(&packet->host_line.ptr[packet->host_line.len -
(1 + x + NDPI_STATICSTRING_LEN(".agni.lindenlab.com"))],
".agni.lindenlab.com", NDPI_STATICSTRING_LEN(".agni.lindenlab.com")) == 0) {
NDPI_LOG(NDPI_PROTOCOL_SECONDLIFE, ndpi_struct, NDPI_LOG_DEBUG,
"Second Life TCP HTTP Host detected.\n");
ndpi_int_secondlife_add_connection(ndpi_struct, flow, NDPI_CORRELATED_PROTOCOL);
return;
}
break;
}
}
}
}
}
if (packet->udp != NULL) {
if (packet->payload_packet_len == 46
&& memcmp(packet->payload, "\x40\x00\x00\x00\x01\x00\xff\xff\x00\x03", 10) == 0) {
NDPI_LOG(NDPI_PROTOCOL_SECONDLIFE, ndpi_struct, NDPI_LOG_DEBUG, "Second Life 0xffff0003 detected.\n");
ndpi_int_secondlife_add_connection(ndpi_struct, flow);
return;
}
if (packet->payload_packet_len == 54
&& memcmp(packet->payload, "\x40\x00\x00\x00\x01\x00\xff\xff\x00\x52", 10) == 0) {
NDPI_LOG(NDPI_PROTOCOL_SECONDLIFE, ndpi_struct, NDPI_LOG_DEBUG, "Second Life 0xffff0052 detected.\n");
ndpi_int_secondlife_add_connection(ndpi_struct, flow);
return;
}
if (packet->payload_packet_len == 58
&& memcmp(packet->payload, "\x40\x00\x00\x00\x01\x00\xff\xff\x00\xa9", 10) == 0) {
NDPI_LOG(NDPI_PROTOCOL_SECONDLIFE, ndpi_struct, NDPI_LOG_DEBUG, "Second Life 0xffff00a9 detected.\n");
ndpi_int_secondlife_add_connection(ndpi_struct, flow);
return;
}
if (packet->payload_packet_len > 54 && memcmp(packet->payload, "\x40\x00\x00\x00\x01\x00\x08", 7) == 0 &&
get_u_int32_t(packet->payload, packet->payload_packet_len - 4) == 0) {
NDPI_LOG(NDPI_PROTOCOL_SECONDLIFE, ndpi_struct, NDPI_LOG_DEBUG, "Second Life 0x08 detected.\n");
ndpi_int_secondlife_add_connection(ndpi_struct, flow);
return;
}
}
NDPI_LOG(NDPI_PROTOCOL_SECONDLIFE, ndpi_struct, NDPI_LOG_DEBUG, "Second Life excluded.\n");
NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_SECONDLIFE);
}
#endif
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