Add a "confidence" field about the reliability of the classification. (#1395)

As a general rule, the higher the confidence value, the higher the
"reliability/precision" of the classification.

In other words, this new field provides an hint about "how" the flow
classification has been obtained.
For example, the application may want to ignore classification "by-port"
(they are not real DPI classifications, after all) or give a second
glance at flows classified via LRU caches (because of false positives).

Setting only one value for the confidence field is a bit tricky: more
work is probably needed in the next future to tweak/fix/improve the logic.

5 files changed, 5 insertions, 5 deletions

diff --git a/src/lib/protocols/attic/flash.c b/src/lib/protocols/attic/flash.c
index cf1c3f374..8ffdf2f06 100644
--- a/src/lib/protocols/attic/flash.c
+++ b/src/lib/protocols/attic/flash.c
@@ -28,7 +28,7 @@
 
 static void ndpi_int_flash_add_connection(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
 {
-	ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_FLASH);
+	ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_FLASH, NDPI_CONFIDENCE_DPI);
 }
 
 void ndpi_search_flash(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
diff --git a/src/lib/protocols/attic/ftp.c b/src/lib/protocols/attic/ftp.c
index 13b242b56..99330aa54 100644
--- a/src/lib/protocols/attic/ftp.c
+++ b/src/lib/protocols/attic/ftp.c
@@ -31,7 +31,7 @@
 
 static void ndpi_int_ftp_add_connection(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow)
 {
-  ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_FTP);
+  ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_FTP, NDPI_CONFIDENCE_DPI);
 }
 
 /**
diff --git a/src/lib/protocols/attic/manolito.c b/src/lib/protocols/attic/manolito.c
index 9c139edb4..07965b35d 100644
--- a/src/lib/protocols/attic/manolito.c
+++ b/src/lib/protocols/attic/manolito.c
@@ -35,7 +35,7 @@ static void ndpi_int_manolito_add_connection(struct
   struct ndpi_id_struct *src = flow->src;
   struct ndpi_id_struct *dst = flow->dst;
 
-  ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_MANOLITO);
+  ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_MANOLITO, NDPI_CONFIDENCE_DPI);
 
 
   if (src != NULL) {
diff --git a/src/lib/protocols/attic/popo.c b/src/lib/protocols/attic/popo.c
index b3c4f90a0..41cda83a6 100644
--- a/src/lib/protocols/attic/popo.c
+++ b/src/lib/protocols/attic/popo.c
@@ -29,7 +29,7 @@
 static void ndpi_int_popo_add_connection(struct ndpi_detection_module_struct
 										   *ndpi_struct, struct ndpi_flow_struct *flow)
 {
-	ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_POPO);
+	ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_POPO, NDPI_CONFIDENCE_DPI);
 }
 
 void ndpi_search_popo_tcp_udp(struct ndpi_detection_module_struct
diff --git a/src/lib/protocols/attic/secondlife.c b/src/lib/protocols/attic/secondlife.c
index a41e71765..b4787a910 100644
--- a/src/lib/protocols/attic/secondlife.c
+++ b/src/lib/protocols/attic/secondlife.c
@@ -30,7 +30,7 @@ static void ndpi_int_secondlife_add_connection(struct ndpi_detection_module_stru
 					       struct ndpi_flow_struct *flow/* , */
 					       /* ndpi_protocol_type_t protocol_type */)
 {
-  ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_SECONDLIFE, protocol_type);
+  ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_SECONDLIFE, protocol_type, NDPI_CONFIDENCE_DPI);
 }
 
 void ndpi_search_secondlife(struct ndpi_detection_module_struct