1 files changed, 86 insertions, 0 deletions
diff --git a/src/lib/protocols/nfs.c b/src/lib/protocols/nfs.c
new file mode 100644
index 000000000..0a3fde84b
--- /dev/null
+++ b/src/lib/protocols/nfs.c
@@ -0,0 +1,86 @@
+/*
+ * nfs.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_NFS
+
+static void ndpi_int_nfs_add_connection(struct ndpi_detection_module_struct
+										  *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+	ndpi_int_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_NFS, NDPI_REAL_PROTOCOL);
+}
+
+void ndpi_search_nfs(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+	struct ndpi_packet_struct *packet = &flow->packet;
+	
+//      struct ndpi_id_struct         *src=ndpi_struct->src;
+//      struct ndpi_id_struct         *dst=ndpi_struct->dst;
+
+	u_int8_t offset = 0;
+	if (packet->tcp != NULL)
+		offset = 4;
+
+	if (packet->payload_packet_len < (40 + offset))
+		goto exclude_nfs;
+
+	NDPI_LOG(NDPI_PROTOCOL_NFS, ndpi_struct, NDPI_LOG_DEBUG, "NFS user match stage 1\n");
+
+
+	if (offset != 0 && get_u_int32_t(packet->payload, 0) != htonl(0x80000000 + packet->payload_packet_len - 4))
+		goto exclude_nfs;
+
+	NDPI_LOG(NDPI_PROTOCOL_NFS, ndpi_struct, NDPI_LOG_DEBUG, "NFS user match stage 2\n");
+
+	if (get_u_int32_t(packet->payload, 4 + offset) != 0)
+		goto exclude_nfs;
+
+	NDPI_LOG(NDPI_PROTOCOL_NFS, ndpi_struct, NDPI_LOG_DEBUG, "NFS user match stage 3\n");
+
+	if (get_u_int32_t(packet->payload, 8 + offset) != htonl(0x02))
+		goto exclude_nfs;
+
+	NDPI_LOG(NDPI_PROTOCOL_NFS, ndpi_struct, NDPI_LOG_DEBUG, "NFS match stage 3\n");
+
+	if (get_u_int32_t(packet->payload, 12 + offset) != htonl(0x000186a5)
+		&& get_u_int32_t(packet->payload, 12 + offset) != htonl(0x000186a3)
+		&& get_u_int32_t(packet->payload, 12 + offset) != htonl(0x000186a0))
+		goto exclude_nfs;
+
+	NDPI_LOG(NDPI_PROTOCOL_NFS, ndpi_struct, NDPI_LOG_DEBUG, "NFS match stage 4\n");
+
+	if (ntohl(get_u_int32_t(packet->payload, 16 + offset)) > 4)
+		goto exclude_nfs;
+
+	NDPI_LOG(NDPI_PROTOCOL_NFS, ndpi_struct, NDPI_LOG_DEBUG, "NFS match\n");
+
+	ndpi_int_nfs_add_connection(ndpi_struct, flow);
+	return;
+
+  exclude_nfs:
+	NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_NFS);
+}
+
+#endif