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/*
* spotify.c
*
* Copyright (C) 2011-13 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_api.h"
#ifdef NDPI_PROTOCOL_SPOTIFY
static void ndpi_int_spotify_add_connection(struct ndpi_detection_module_struct *ndpi_struct,
struct ndpi_flow_struct *flow,
u_int8_t due_to_correlation)
{
ndpi_int_add_connection(ndpi_struct, flow,
NDPI_PROTOCOL_SPOTIFY,
due_to_correlation ? NDPI_CORRELATED_PROTOCOL : NDPI_REAL_PROTOCOL);
}
static void ndpi_check_spotify(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct *packet = &flow->packet;
// const u_int8_t *packet_payload = packet->payload;
u_int32_t payload_len = packet->payload_packet_len;
if(packet->udp != NULL) {
u_int16_t spotify_port = htons(57621);
if((packet->udp->source == spotify_port)
&& (packet->udp->dest == spotify_port)) {
if(payload_len > 2) {
if(memcmp(packet->payload, "SpotUdp", 7) == 0) {
NDPI_LOG(NDPI_PROTOCOL_SPOTIFY, ndpi_struct, NDPI_LOG_DEBUG, "Found spotify udp dissector.\n");
ndpi_int_spotify_add_connection(ndpi_struct, flow, 0);
return;
}
}
}
} else if(packet->tcp != NULL) {
if(packet->payload[0] == 0x00 && packet->payload[1] == 0x04 &&
packet->payload[2] == 0x00 && packet->payload[3] == 0x00&&
packet->payload[6] == 0x52 && packet->payload[7] == 0x0e &&
packet->payload[8] == 0x50 ) {
NDPI_LOG(NDPI_PROTOCOL_SPOTIFY, ndpi_struct, NDPI_LOG_DEBUG, "Found spotify tcp dissector.\n");
ndpi_int_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_SPOTIFY, NDPI_REAL_PROTOCOL);
}
if(packet->iph /* IPv4 Only: we need to support packet->iphv6 at some point */) {
/* if(packet->detected_protocol_stack[0] == NDPI_PROTOCOL_UNKNOWN) */ {
/*
Spotify
78.31.8.0 - 78.31.15.255 (78.31.8.0/22)
AS29017
193.235.232.0 - 193.235.235.255 (193.235.232.0/22)
AS29017
194.132.196.0 - 194.132.199.255 (194.132.198.147/22)
AS43650
194.132.176.0 - 194.132.179.255 (194.132.176.0/22)
AS43650
194.132.162.0 - 194.132.163.255 (194.132.162.0/24)
AS43650
*/
//printf("%08X - %08X\n", ntohl(packet->iph->saddr), ntohl(packet->iph->daddr));
if(((ntohl(packet->iph->saddr) & 0xFFFFFC00 /* 255.255.252.0 */) == 0x4E1F0800 /* 78.31.8.0 */)
|| ((ntohl(packet->iph->daddr) & 0xFFFFFC00 /* 255.255.252.0 */) == 0x4E1F0800 /* 78.31.8.0 */)
/* **** */
|| ((ntohl(packet->iph->saddr) & 0xFFFFFC00 /* 255.255.252.0 */) == 0xC1EBE800 /* 193.235.232.0 */)
|| ((ntohl(packet->iph->daddr) & 0xFFFFFC00 /* 255.255.252.0 */) == 0xC1EBE800 /* 193.235.232.0 */)
/* **** */
|| ((ntohl(packet->iph->saddr) & 0xFFFFFC00 /* 255.255.252.0 */) == 0xC284C400 /* 194.132.196.0 */)
|| ((ntohl(packet->iph->daddr) & 0xFFFFFC00 /* 255.255.252.0 */) == 0xC284C400 /* 194.132.196.0 */)
/* **** */
|| ((ntohl(packet->iph->saddr) & 0xFFFFFC00 /* 255.255.252.0 */) == 0xC284A200 /* 194.132.162.0 */)
|| ((ntohl(packet->iph->daddr) & 0xFFFFFC00 /* 255.255.252.0 */) == 0xC284A200 /* 194.132.162.0 */)
) {
NDPI_LOG(NDPI_PROTOCOL_SPOTIFY, ndpi_struct, NDPI_LOG_DEBUG, "Found spotify via ip range.\n");
ndpi_int_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_SPOTIFY, NDPI_REAL_PROTOCOL);
return;
}
}
}
}
NDPI_LOG(NDPI_PROTOCOL_SPOTIFY, ndpi_struct, NDPI_LOG_DEBUG, "exclude spotify.\n");
NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_SPOTIFY);
}
void ndpi_search_spotify(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct *packet = &flow->packet;
NDPI_LOG(NDPI_PROTOCOL_SPOTIFY, ndpi_struct, NDPI_LOG_DEBUG, "spotify detection...\n");
/* skip marked packets */
if (packet->detected_protocol_stack[0] != NDPI_PROTOCOL_SPOTIFY) {
if (packet->tcp_retransmission == 0) {
ndpi_check_spotify(ndpi_struct, flow);
}
}
}
#endif
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