Amazon video static classification.

Signed-off-by: Ravi Kerur <ravi.kerur@viasat.com>

1 files changed, 81 insertions, 0 deletions

diff --git a/src/lib/protocols/amazon_video.c b/src/lib/protocols/amazon_video.c
new file mode 100644
index 000000000..41356d9ad
--- /dev/null
+++ b/src/lib/protocols/amazon_video.c
@@ -0,0 +1,81 @@
+/*
+ * amazon_video.c
+ *
+ * Copyright (C) 2018 by 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_protocol_ids.h"
+
+#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_AMAZON_VIDEO
+
+#include "ndpi_api.h"
+
+static void ndpi_check_amazon_video(struct ndpi_detection_module_struct *ndpi_struct,
+				  struct ndpi_flow_struct *flow) {
+
+  struct ndpi_packet_struct *packet = &flow->packet;
+
+  NDPI_LOG_DBG(ndpi_struct, "search Amazon Prime\n");
+
+  if((packet->tcp != NULL) &&
+      (packet->payload[0] == 0xFE &&
+       packet->payload[1] == 0xED &&
+       packet->payload[2] == 0xFA &&
+       packet->payload[3] == 0xCE))
+    {
+      NDPI_LOG_INFO(ndpi_struct, "found Amazon Video on TCP\n");
+      ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_AMAZON_VIDEO, NDPI_PROTOCOL_UNKNOWN);
+      return;
+    }
+  else if((packet->udp != NULL) &&
+	   (packet->payload[0] == 0xDE &&
+	    packet->payload[1] == 0xAD &&
+	    packet->payload[2] == 0xBE &&
+	    packet->payload[3] == 0xEF))
+    {
+      NDPI_LOG_INFO(ndpi_struct, "found Amazon Video on UDP\n");
+      ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_AMAZON_VIDEO, NDPI_PROTOCOL_UNKNOWN);
+    } else {
+      NDPI_EXCLUDE_PROTO(ndpi_struct, flow);
+  }
+}
+
+void ndpi_search_amazon_video(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
+{
+  struct ndpi_packet_struct *packet = &flow->packet;
+
+  NDPI_LOG_DBG(ndpi_struct, "search amazon_video\n");
+
+  /* skip marked packets */
+  if(packet->detected_protocol_stack[0] != NDPI_PROTOCOL_AMAZON_VIDEO)
+    ndpi_check_amazon_video(ndpi_struct, flow);
+}
+
+
+void init_amazon_video_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id, NDPI_PROTOCOL_BITMASK *detection_bitmask)
+{
+  ndpi_set_bitmask_protocol_detection("AMAZON_VIDEO", ndpi_struct, detection_bitmask, *id,
+				      NDPI_PROTOCOL_AMAZON_VIDEO,
+				      ndpi_search_amazon_video,
+				      NDPI_SELECTION_BITMASK_PROTOCOL_TCP_OR_UDP_WITH_PAYLOAD,
+				      SAVE_DETECTION_BITMASK_AS_UNKNOWN,
+				      ADD_TO_DETECTION_BITMASK);
+  *id += 1;
+}