aboutsummaryrefslogtreecommitdiff
path: root/src
diff options
context:
space:
mode:
Diffstat (limited to 'src')
-rw-r--r--src/include/ndpi_protocol_ids.h1
-rw-r--r--src/lib/ndpi_content_match.c.inc1
-rw-r--r--src/lib/ndpi_main.c7
-rw-r--r--src/lib/ndpi_private.h1
-rw-r--r--src/lib/protocols/nomachine.c82
5 files changed, 92 insertions, 0 deletions
diff --git a/src/include/ndpi_protocol_ids.h b/src/include/ndpi_protocol_ids.h
index a7deb2b64..22e30ce57 100644
--- a/src/include/ndpi_protocol_ids.h
+++ b/src/include/ndpi_protocol_ids.h
@@ -406,6 +406,7 @@ typedef enum {
NDPI_PROTOCOL_JSON_RPC = 375,
NDPI_PROTOCOL_WEBDAV = 376,
NDPI_PROTOCOL_APACHE_KAFKA = 377,
+ NDPI_PROTOCOL_NOMACHINE = 378,
#ifdef CUSTOM_NDPI_PROTOCOLS
#include "../../../nDPI-custom/custom_ndpi_protocol_ids.h"
diff --git a/src/lib/ndpi_content_match.c.inc b/src/lib/ndpi_content_match.c.inc
index 24850c586..91fe3109d 100644
--- a/src/lib/ndpi_content_match.c.inc
+++ b/src/lib/ndpi_content_match.c.inc
@@ -1571,6 +1571,7 @@ static ndpi_tls_cert_name_match tls_certificate_match [] = {
{ "O=Yandex LLC", NDPI_PROTOCOL_YANDEX },
{ "O=Riot Games, Inc.", NDPI_PROTOCOL_RIOTGAMES },
{ "O=Riot Games Inc", NDPI_PROTOCOL_RIOTGAMES },
+ { "O=NoMachine", NDPI_PROTOCOL_NOMACHINE },
{ "CN=hangouts", NDPI_PROTOCOL_HANGOUT_DUO },
{ "CN=Snapchat Inc.", NDPI_PROTOCOL_SNAPCHAT_CALL },
diff --git a/src/lib/ndpi_main.c b/src/lib/ndpi_main.c
index 0b9b28864..2c8cbd11f 100644
--- a/src/lib/ndpi_main.c
+++ b/src/lib/ndpi_main.c
@@ -2218,6 +2218,10 @@ static void ndpi_init_protocol_defaults(struct ndpi_detection_module_struct *ndp
"Kafka", NDPI_PROTOCOL_CATEGORY_RPC,
ndpi_build_default_ports(ports_a, 9092, 0, 0, 0, 0) /* TCP */,
ndpi_build_default_ports(ports_b, 0, 0, 0, 0, 0) /* UDP */);
+ ndpi_set_proto_defaults(ndpi_str, 0 /* encrypted */, 0 /* nw proto */, NDPI_PROTOCOL_ACCEPTABLE, NDPI_PROTOCOL_NOMACHINE,
+ "NoMachine", NDPI_PROTOCOL_CATEGORY_REMOTE_ACCESS,
+ ndpi_build_default_ports(ports_a, 4000, 0, 0, 0, 0) /* TCP */,
+ ndpi_build_default_ports(ports_b, 4000, 0, 0, 0, 0) /* UDP */);
#ifdef CUSTOM_NDPI_PROTOCOLS
#include "../../../nDPI-custom/custom_ndpi_main.c"
@@ -5724,6 +5728,9 @@ static int ndpi_callback_init(struct ndpi_detection_module_struct *ndpi_str) {
/* Apache Kafka */
init_kafka_dissector(ndpi_str, &a);
+ /* NoMachine */
+ init_nomachine_dissector(ndpi_str, &a);
+
#ifdef CUSTOM_NDPI_PROTOCOLS
#include "../../../nDPI-custom/custom_ndpi_main_init.c"
#endif
diff --git a/src/lib/ndpi_private.h b/src/lib/ndpi_private.h
index a906bc566..a14a87635 100644
--- a/src/lib/ndpi_private.h
+++ b/src/lib/ndpi_private.h
@@ -640,6 +640,7 @@ void init_uftp_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int
void init_openflow_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
void init_json_rpc_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
void init_kafka_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
+void init_nomachine_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
#endif
diff --git a/src/lib/protocols/nomachine.c b/src/lib/protocols/nomachine.c
new file mode 100644
index 000000000..33cf71dc9
--- /dev/null
+++ b/src/lib/protocols/nomachine.c
@@ -0,0 +1,82 @@
+/*
+ * nomachine.c
+ *
+ * Copyright (C) 2023 - ntop.org
+ * Copyright (C) 2023 - V.G <jacendi@protonmail.com>
+ *
+ * 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_NOMACHINE
+
+#include "ndpi_api.h"
+#include "ndpi_private.h"
+
+static void ndpi_int_nomachine_add_connection(struct ndpi_detection_module_struct *ndpi_struct,
+ struct ndpi_flow_struct *flow)
+{
+ NDPI_LOG_INFO(ndpi_struct, "found NoMachine\n");
+ ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_NOMACHINE,
+ NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
+ ndpi_set_risk(ndpi_struct, flow, NDPI_DESKTOP_OR_FILE_SHARING_SESSION, "Found NoMachine");
+}
+
+static void ndpi_search_nomachine(struct ndpi_detection_module_struct *ndpi_struct,
+ struct ndpi_flow_struct *flow)
+{
+ struct ndpi_packet_struct const * const packet = &ndpi_struct->packet;
+
+ NDPI_LOG_DBG(ndpi_struct, "search NoMachine\n");
+
+ if (packet->tcp != NULL) {
+ /* A NoMachine connection starts with a handshake that contains
+ * only the characters NXSH (request) & NXD (response) and a version
+ * number. After that it is followed by a TLS handshake. */
+ if ((packet->payload_packet_len > 10 && packet->payload_packet_len < 15) &&
+ ((memcmp(packet->payload, "NXSH-", 5) == 0) || (memcmp(packet->payload, "NXD-", 4) == 0)))
+ {
+ ndpi_int_nomachine_add_connection(ndpi_struct, flow);
+ return;
+ }
+ } else if (packet->udp != NULL) {
+ /* NoMachine uses UDP for multimedia data */
+ if (packet->payload_packet_len > 9 && /* Shortest valid packet is 10 bytes long, probably it's keep-alive */
+ le16toh(get_u_int16_t(packet->payload, 2)) == 1 &&
+ le16toh(get_u_int16_t(packet->payload, 4)) == packet->payload_packet_len &&
+ get_u_int16_t(packet->payload, 8) == 0)
+ {
+ ndpi_int_nomachine_add_connection(ndpi_struct, flow);
+ return;
+ }
+ }
+
+ NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+}
+void init_nomachine_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id)
+{
+ ndpi_set_bitmask_protocol_detection("NoMachine", ndpi_struct, *id,
+ NDPI_PROTOCOL_NOMACHINE,
+ ndpi_search_nomachine,
+ NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_OR_UDP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION,
+ SAVE_DETECTION_BITMASK_AS_UNKNOWN,
+ ADD_TO_DETECTION_BITMASK);
+
+ *id += 1;
+}
Powered by cgit, Themed by Ted Yin.