Add Lustre protocol detection support (#2544)

4 files changed, 98 insertions, 0 deletions

diff --git a/src/include/ndpi_private.h b/src/include/ndpi_private.h
index 3688061ca..99f158456 100644
--- a/src/include/ndpi_private.h
+++ b/src/include/ndpi_private.h
@@ -939,6 +939,7 @@ void init_openwire_dissector(struct ndpi_detection_module_struct *ndpi_struct, u
 void init_cnp_ip_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
 void init_atg_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
 void init_trdp_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
+void init_lustre_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id);
 
 #endif
 
diff --git a/src/include/ndpi_protocol_ids.h b/src/include/ndpi_protocol_ids.h
index 3925d941d..4773c07bb 100644
--- a/src/include/ndpi_protocol_ids.h
+++ b/src/include/ndpi_protocol_ids.h
@@ -453,6 +453,7 @@ typedef enum {
   NDPI_PROTOCOL_CNP_IP                = 422,
   NDPI_PROTOCOL_ATG                   = 423,
   NDPI_PROTOCOL_TRDP                  = 424,
+  NDPI_PROTOCOL_LUSTRE                = 425,
 
 #ifdef CUSTOM_NDPI_PROTOCOLS
 #include "../../../nDPI-custom/custom_ndpi_protocol_ids.h"
diff --git a/src/lib/ndpi_main.c b/src/lib/ndpi_main.c
index d74afa61a..8f72b8b03 100644
--- a/src/lib/ndpi_main.c
+++ b/src/lib/ndpi_main.c
@@ -2340,6 +2340,10 @@ static void ndpi_init_protocol_defaults(struct ndpi_detection_module_struct *ndp
 			  "TRDP", NDPI_PROTOCOL_CATEGORY_IOT_SCADA,
 			  ndpi_build_default_ports(ports_a, 17225, 0, 0, 0, 0) /* TCP */,
 			  ndpi_build_default_ports(ports_b, 17224, 17225, 0, 0, 0) /* UDP */);
+  ndpi_set_proto_defaults(ndpi_str, 1 /* cleartext */, 0 /* nw proto */, NDPI_PROTOCOL_ACCEPTABLE, NDPI_PROTOCOL_LUSTRE,
+			  "Lustre", NDPI_PROTOCOL_CATEGORY_DATA_TRANSFER,
+			  ndpi_build_default_ports(ports_a, 0, 0, 0, 0, 0) /* TCP */,
+			  ndpi_build_default_ports(ports_b, 0, 0, 0, 0, 0) /* UDP */);
 
 #ifdef CUSTOM_NDPI_PROTOCOLS
 #include "../../../nDPI-custom/custom_ndpi_main.c"
@@ -6304,6 +6308,9 @@ static int ndpi_callback_init(struct ndpi_detection_module_struct *ndpi_str) {
   /* Train Real Time Data Protocol */
   init_trdp_dissector(ndpi_str, &a);
 
+  /* Lustre */
+  init_lustre_dissector(ndpi_str, &a);
+
 #ifdef CUSTOM_NDPI_PROTOCOLS
 #include "../../../nDPI-custom/custom_ndpi_main_init.c"
 #endif
diff --git a/src/lib/protocols/lustre.c b/src/lib/protocols/lustre.c
new file mode 100644
index 000000000..6965fe51a
--- /dev/null
+++ b/src/lib/protocols/lustre.c
@@ -0,0 +1,89 @@
+/*
+ * lustre.c
+ *
+ * Lustre file system
+ * 
+ * Copyright (C) 2024 - ntop.org
+ * Copyright (C) 2024 - V.G <v.gavrilov@securitycode.ru>
+ *
+ * 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_LUSTRE
+
+#include "ndpi_api.h"
+#include "ndpi_private.h"
+
+static void ndpi_int_lustre_add_connection(struct ndpi_detection_module_struct *ndpi_struct,
+                                           struct ndpi_flow_struct *flow) 
+{
+  NDPI_LOG_INFO(ndpi_struct, "found Lustre\n");
+  ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_LUSTRE, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
+}
+
+static void ndpi_search_lustre(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 Lustre\n");
+
+  u_int32_t lnd_dst_address = 0;
+
+  if (packet->payload_packet_len > 15) {
+    u_int32_t lnet_magic = le32toh(get_u_int32_t(packet->payload, 0));
+    lnd_dst_address = le32toh(get_u_int32_t(packet->payload, 8));
+
+    if ((lnet_magic == 0x45726963 || lnet_magic == 0xacce7100) && lnd_dst_address == ntohl(packet->iph->daddr))
+    {
+      ndpi_int_lustre_add_connection(ndpi_struct, flow);
+      return;
+    }
+  }
+
+  /*
+   * Mid-stream detection
+   */
+
+  if (packet->payload_packet_len > 95 && le32toh(get_u_int32_t(packet->payload, 0)) == 0xC1)
+  {
+    lnd_dst_address = le32toh(get_u_int32_t(packet->payload, 24));
+    u_int32_t lnet_payload_len = le32toh(get_u_int32_t(packet->payload, 52));
+
+    if (lnd_dst_address == ntohl(packet->iph->daddr) &&
+        lnet_payload_len == (u_int32_t)(packet->payload_packet_len-96))
+    {
+      ndpi_int_lustre_add_connection(ndpi_struct, flow);
+      return;
+    }
+  }
+
+  NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+}
+
+void init_lustre_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id)
+{
+  ndpi_set_bitmask_protocol_detection("Lustre", ndpi_struct, *id,
+				      NDPI_PROTOCOL_LUSTRE,
+				      ndpi_search_lustre,
+				      NDPI_SELECTION_BITMASK_PROTOCOL_TCP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION /* Ipv4 only; Lustre doesn't support IPv6 */,
+				      SAVE_DETECTION_BITMASK_AS_UNKNOWN,
+				      ADD_TO_DETECTION_BITMASK);
+  *id += 1;
+}