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/*
* apple_push.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_APPLE_PUSH
#include "ndpi_api.h"
#include "ndpi_private.h"
static int is_apple_push_addr(const struct ndpi_packet_struct *packet)
{
if(packet->iph) {
/* 17.0.0.0/8 */
if(((ntohl(packet->iph->saddr) & 0xFF000000 /* 255.0.0.0 */) == 0x11000000) ||
((ntohl(packet->iph->daddr) & 0xFF000000 /* 255.0.0.0 */) == 0x11000000))
return 1;
} else if(packet->iphv6) {
/* 2620:149:a44::/48 */
if(((packet->iphv6->ip6_src.u6_addr.u6_addr32[0] == ntohl(0x26200149)) &&
((packet->iphv6->ip6_src.u6_addr.u6_addr32[1] & htonl (0xffff0000)) == ntohl(0x0a440000))) ||
((packet->iphv6->ip6_dst.u6_addr.u6_addr32[0] == ntohl(0x26200149)) &&
((packet->iphv6->ip6_dst.u6_addr.u6_addr32[1] & htonl (0xffff0000)) == ntohl(0x0a440000))))
return 1;
/* 2403:300:a42::/48 */
if(((packet->iphv6->ip6_src.u6_addr.u6_addr32[0] == ntohl(0x24030300)) &&
((packet->iphv6->ip6_src.u6_addr.u6_addr32[1] & htonl (0xffff0000)) == ntohl(0x0a420000))) ||
((packet->iphv6->ip6_dst.u6_addr.u6_addr32[0] == ntohl(0x24030300)) &&
((packet->iphv6->ip6_dst.u6_addr.u6_addr32[1] & htonl (0xffff0000)) == ntohl(0x0a420000))))
return 1;
/* 2403:300:a51::/48 */
if(((packet->iphv6->ip6_src.u6_addr.u6_addr32[0] == ntohl(0x24030300)) &&
((packet->iphv6->ip6_src.u6_addr.u6_addr32[1] & htonl (0xffff0000)) == ntohl(0x0a510000))) ||
((packet->iphv6->ip6_dst.u6_addr.u6_addr32[0] == ntohl(0x24030300)) &&
((packet->iphv6->ip6_dst.u6_addr.u6_addr32[1] & htonl (0xffff0000)) == ntohl(0x0a510000))))
return 1;
/* 2a01:b740:a42::/48 */
if(((packet->iphv6->ip6_src.u6_addr.u6_addr32[0] == ntohl(0x2a0ab740)) &&
((packet->iphv6->ip6_src.u6_addr.u6_addr32[1] & htonl (0xffff0000)) == ntohl(0x0a420000))) ||
((packet->iphv6->ip6_dst.u6_addr.u6_addr32[0] == ntohl(0x2a0ab740)) &&
((packet->iphv6->ip6_dst.u6_addr.u6_addr32[1] & htonl (0xffff0000)) == ntohl(0x0a420000))))
return 1;
}
return 0;
}
static void ndpi_check_apple_push(struct ndpi_detection_module_struct *ndpi_struct,
struct ndpi_flow_struct *flow) {
struct ndpi_packet_struct *packet = &ndpi_struct->packet;
/* https://support.apple.com/en-us/HT203609 */
if(is_apple_push_addr(packet)) {
u_int16_t apple_push_port = ntohs(5223);
u_int16_t notification_apn_port = ntohs(2197);
if((packet->tcp->source == apple_push_port) || (packet->tcp->dest == apple_push_port) ||
(packet->tcp->source == notification_apn_port) || (packet->tcp->dest == notification_apn_port)) {
NDPI_LOG_INFO(ndpi_struct, "found apple_push\n");
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_APPLE_PUSH, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
return;
}
}
NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
}
static void ndpi_search_apple_push(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
NDPI_LOG_DBG(ndpi_struct, "search apple_push\n");
ndpi_check_apple_push(ndpi_struct, flow);
}
void init_apple_push_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id)
{
ndpi_set_bitmask_protocol_detection("APPLE_PUSH", ndpi_struct, *id,
NDPI_PROTOCOL_APPLE_PUSH,
ndpi_search_apple_push,
NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION,
SAVE_DETECTION_BITMASK_AS_UNKNOWN,
ADD_TO_DETECTION_BITMASK);
*id += 1;
}
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