Added EthernetIP dissector

1 files changed, 71 insertions, 0 deletions

diff --git a/src/lib/protocols/ethernet_ip.c b/src/lib/protocols/ethernet_ip.c
new file mode 100644
index 000000000..b11a05d95
--- /dev/null
+++ b/src/lib/protocols/ethernet_ip.c
@@ -0,0 +1,71 @@
+/*
+ * zmq.c
+ *
+ * Copyright (C) 2016-22 - ntop.org
+ *
+ * nDPI is free software: you can zmqtribute 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_ETHERNET_IP
+
+#include "ndpi_api.h"
+
+static void ndpi_int_ethernet_ip_add_connection(struct ndpi_detection_module_struct
+						*ndpi_struct, struct ndpi_flow_struct *flow) {
+  ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_ETHERNET_IP,
+			     NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI);
+}
+
+
+void ndpi_search_ethernet_ip(struct ndpi_detection_module_struct *ndpi_struct,
+			     struct ndpi_flow_struct *flow) {
+  struct ndpi_packet_struct *packet = &ndpi_struct->packet;
+  
+  NDPI_LOG_DBG(ndpi_struct, "search for ETHERNET_IP\n");
+
+  if(packet->tcp != NULL) {
+    NDPI_LOG_DBG2(ndpi_struct, "calculating ETHERNET_IP over tcp\n");
+  
+    if(packet->payload_packet_len >= 24) {
+      u_int16_t eth_ip_port = ntohs(44818);
+
+      if((packet->tcp->source == eth_ip_port) || (packet->tcp->dest == eth_ip_port)) {
+	u_int16_t len = *((u_int16_t*)&packet->payload[2]); /* Little endian */
+	
+	if((len+24) == packet->payload_packet_len) {	
+	  NDPI_LOG_INFO(ndpi_struct, "found ethernet_ip\n");
+	  ndpi_int_ethernet_ip_add_connection(ndpi_struct, flow);
+	  return;
+	}
+      }
+    }
+  }
+  
+  NDPI_EXCLUDE_PROTO(ndpi_struct, flow); /* No luck this time */
+}
+  
+
+void init_ethernet_ip_dissector(struct ndpi_detection_module_struct *ndpi_struct,
+				u_int32_t *id, NDPI_PROTOCOL_BITMASK *detection_bitmask) {
+  ndpi_set_bitmask_protocol_detection("EthernetIP", ndpi_struct, detection_bitmask, *id,
+				      NDPI_PROTOCOL_ETHERNET_IP,
+				      ndpi_search_ethernet_ip,
+				      NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_WITH_PAYLOAD_WITHOUT_RETRANSMISSION,
+				      SAVE_DETECTION_BITMASK_AS_UNKNOWN,
+				      ADD_TO_DETECTION_BITMASK);
+  *id += 1;
+}