From 6298ecc2718a74a7e5c92e57af464d97c3a60bf9 Mon Sep 17 00:00:00 2001
From: Luca <deri@ntop.org>
Date: Tue, 5 Nov 2019 08:21:31 +0000
Subject: Added tunnelling decapsulation

---
 src/include/ndpi_api.h      |  1 +
 src/include/ndpi_typedefs.h |  7 +++++++
 src/lib/ndpi_utils.c        | 22 ++++++++++++++++++++++
 3 files changed, 30 insertions(+)

(limited to 'src')

diff --git a/src/include/ndpi_api.h b/src/include/ndpi_api.h
index a1c33b36e..b049755ab 100644
--- a/src/include/ndpi_api.h
+++ b/src/include/ndpi_api.h
@@ -818,6 +818,7 @@ extern "C" {
 					  struct ndpi_flow_struct *flow);    
   u_int8_t ndpi_is_safe_ssl_cipher(u_int32_t cipher);
   const char* ndpi_cipher2str(u_int32_t cipher);
+  const char* ndpi_tunnel2str(ndpi_packet_tunnel tt);
   u_int16_t ndpi_guess_host_protocol_id(struct ndpi_detection_module_struct *ndpi_struct,
 					struct ndpi_flow_struct *flow);
   int ndpi_has_human_readeable_string(struct ndpi_detection_module_struct *ndpi_struct,
diff --git a/src/include/ndpi_typedefs.h b/src/include/ndpi_typedefs.h
index 04e439221..1e71ee89e 100644
--- a/src/include/ndpi_typedefs.h
+++ b/src/include/ndpi_typedefs.h
@@ -42,6 +42,13 @@ typedef enum {
 	      ndpi_l4_proto_tcp_and_udp,
 } ndpi_l4_proto_info;
 
+typedef enum {
+  ndpi_no_tunnel = 0,
+  ndpi_gtp_tunnel,
+  ndpi_capwap_tunnel,
+  ndpi_tzsp_tunnel,
+} ndpi_packet_tunnel;
+
 /* NDPI_VISIT */
 typedef enum {
 	      ndpi_preorder,
diff --git a/src/lib/ndpi_utils.c b/src/lib/ndpi_utils.c
index f11f074cd..091cac927 100644
--- a/src/lib/ndpi_utils.c
+++ b/src/lib/ndpi_utils.c
@@ -1072,3 +1072,25 @@ int ndpi_flow2json(struct ndpi_detection_module_struct *ndpi_struct,
 }
 
 /* ********************************** */
+
+const char* ndpi_tunnel2str(ndpi_packet_tunnel tt) {
+  switch(tt) {
+  case ndpi_no_tunnel:
+    return("No-Tunnel");
+    break;
+    
+  case ndpi_gtp_tunnel:
+    return("GTP");
+    break;
+    
+  case ndpi_capwap_tunnel:
+    return("CAPWAP");
+    break;
+    
+  case ndpi_tzsp_tunnel:
+    return("TZSP");
+    break;
+  }
+}
+
+/* ********************************** */
-- 
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