1 files changed, 49 insertions, 0 deletions
diff --git a/src/lib/protocols/sflow.c b/src/lib/protocols/sflow.c
new file mode 100644
index 000000000..980867634
--- /dev/null
+++ b/src/lib/protocols/sflow.c
@@ -0,0 +1,49 @@
+/*
+ * sflow.c
+ *
+ * Copyright (C) 2011-15 - 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/>.
+ *
+ */
+
+
+#include "ndpi_api.h"
+
+#ifdef NDPI_PROTOCOL_SFLOW
+
+static void ndpi_check_sflow(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+  struct ndpi_packet_struct *packet = &flow->packet;  
+  // const u_int8_t *packet_payload = packet->payload;
+  u_int32_t payload_len = packet->payload_packet_len;
+
+  if((packet->udp != NULL)
+     && (payload_len >= 24)
+     /* Version */
+     && (packet->payload[0] == 0) && (packet->payload[1] == 0) && (packet->payload[2] == 0)
+     && ((packet->payload[3] == 2) || (packet->payload[3] == 5))) {
+    NDPI_LOG(NDPI_PROTOCOL_SFLOW, ndpi_struct, NDPI_LOG_DEBUG, "Found sflow.\n");
+    ndpi_int_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_SFLOW, NDPI_REAL_PROTOCOL);
+    return;
+  }
+}
+
+void ndpi_search_sflow(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+  NDPI_LOG(NDPI_PROTOCOL_SFLOW, ndpi_struct, NDPI_LOG_DEBUG, "sflow detection...\n");
+  ndpi_check_sflow(ndpi_struct, flow);
+}
+
+#endif