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/*
* afp.c
*
* Copyright (C) 2009-2011 by ipoque GmbH
* Copyright (C) 2011-15 - 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_protocols.h"
#ifdef NDPI_PROTOCOL_AFP
static void ndpi_int_afp_add_connection(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_AFP, NDPI_PROTOCOL_UNKNOWN);
}
void ndpi_search_afp(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
{
struct ndpi_packet_struct *packet = &flow->packet;
// struct ndpi_id_struct *src = flow->src;
// struct ndpi_id_struct *dst = flow->dst;
/*
* this will detect the OpenSession command of the Data Stream Interface (DSI) protocol
* which is exclusively used by the Apple Filing Protocol (AFP) on TCP/IP networks
*/
if (packet->payload_packet_len >= 22 && get_u_int16_t(packet->payload, 0) == htons(0x0004) &&
get_u_int16_t(packet->payload, 2) == htons(0x0001) && get_u_int32_t(packet->payload, 4) == 0 &&
get_u_int32_t(packet->payload, 8) == htonl(packet->payload_packet_len - 16) &&
get_u_int32_t(packet->payload, 12) == 0 && get_u_int16_t(packet->payload, 16) == htons(0x0104)) {
NDPI_LOG(NDPI_PROTOCOL_AFP, ndpi_struct, NDPI_LOG_DEBUG, "AFP: DSI OpenSession detected.\n");
ndpi_int_afp_add_connection(ndpi_struct, flow);
return;
}
/*
* detection of GetStatus command of DSI protocl
*/
if (packet->payload_packet_len >= 18 && get_u_int16_t(packet->payload, 0) == htons(0x0003) &&
get_u_int16_t(packet->payload, 2) == htons(0x0001) && get_u_int32_t(packet->payload, 4) == 0 &&
get_u_int32_t(packet->payload, 8) == htonl(packet->payload_packet_len - 16) &&
get_u_int32_t(packet->payload, 12) == 0 && get_u_int16_t(packet->payload, 16) == htons(0x0f00)) {
NDPI_LOG(NDPI_PROTOCOL_AFP, ndpi_struct, NDPI_LOG_DEBUG, "AFP: DSI GetStatus detected.\n");
ndpi_int_afp_add_connection(ndpi_struct, flow);
return;
}
NDPI_LOG(NDPI_PROTOCOL_AFP, ndpi_struct, NDPI_LOG_DEBUG, "AFP excluded.\n");
NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_AFP);
}
#endif
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