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Add Yojimbo (netcode) protocol dissector (#2277)
Signed-off-by: Toni Uhlig <[email protected]>
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/* | ||
* yojimbo.c | ||
* | ||
* Copyright (C) 2024 - ntop.org | ||
* | ||
* 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/>. | ||
* | ||
*/ | ||
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#include "ndpi_protocol_ids.h" | ||
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#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_YOJIMBO | ||
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#include "ndpi_api.h" | ||
#include "ndpi_private.h" | ||
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static void ndpi_int_yojimbo_add_connection(struct ndpi_detection_module_struct * const ndpi_struct, | ||
struct ndpi_flow_struct * const flow) | ||
{ | ||
NDPI_LOG_INFO(ndpi_struct, "found yojimbo\n"); | ||
ndpi_set_detected_protocol(ndpi_struct, flow, | ||
NDPI_PROTOCOL_YOJIMBO, | ||
NDPI_PROTOCOL_UNKNOWN, | ||
NDPI_CONFIDENCE_DPI); | ||
} | ||
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static void ndpi_search_yojimbo(struct ndpi_detection_module_struct *ndpi_struct, | ||
struct ndpi_flow_struct *flow) | ||
{ | ||
struct ndpi_packet_struct const * const packet = &ndpi_struct->packet; | ||
uint64_t const magic = 0x4e4554434f444520; // "NETCODE " | ||
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if (packet->payload_packet_len < 9) | ||
{ | ||
NDPI_EXCLUDE_PROTO(ndpi_struct, flow); | ||
return; | ||
} | ||
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if (packet->payload[0] == 0x00 && | ||
get_u_int64_t(packet->payload, 1) == ndpi_htonll(magic)) | ||
{ | ||
ndpi_int_yojimbo_add_connection(ndpi_struct, flow); | ||
return; | ||
} | ||
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NDPI_EXCLUDE_PROTO(ndpi_struct, flow); | ||
} | ||
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void init_yojimbo_dissector(struct ndpi_detection_module_struct *ndpi_struct, | ||
u_int32_t *id) | ||
{ | ||
ndpi_set_bitmask_protocol_detection("Yojimbo", ndpi_struct, *id, | ||
NDPI_PROTOCOL_YOJIMBO, | ||
ndpi_search_yojimbo, | ||
NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_UDP_WITH_PAYLOAD, | ||
SAVE_DETECTION_BITMASK_AS_UNKNOWN, | ||
ADD_TO_DETECTION_BITMASK); | ||
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*id += 1; | ||
} | ||
|
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2 changes: 1 addition & 1 deletion
2
tests/cfgs/default/result/FAX-Call-t38-CA-TDM-SIP-FB-1.pcap.out
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2 changes: 1 addition & 1 deletion
2
tests/cfgs/default/result/dnscrypt-v1-and-resolver-pings.pcap.out
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2 changes: 1 addition & 1 deletion
2
tests/cfgs/default/result/dnscrypt_skype_false_positive.pcapng.out
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