Added ndpi_get_api_version() API call to be used in applications that

are dynamically linking with nDPI, to make sure the APIs are in sync

4 files changed, 16 insertions, 0 deletions

diff --git a/example/ndpiReader.c b/example/ndpiReader.c
index 38ce75b14..ddd83bb74 100644
--- a/example/ndpiReader.c
+++ b/example/ndpiReader.c
@@ -3142,6 +3142,11 @@ int main(int argc, char **argv) {
 #endif
   int i;
 
+  if(ndpi_get_api_version() != NDPI_API_VERSION) {
+    printf("nDPI Library version mismatch: please make sure this code and the nDPI library are in sync\n");
+    return(-1);
+  }
+  
   automataUnitTest();
 
   ndpi_info_mod = ndpi_init_detection_module();
diff --git a/libndpi.sym b/libndpi.sym
index 625b9e81f..9c6643db4 100644
--- a/libndpi.sym
+++ b/libndpi.sym
@@ -61,3 +61,4 @@ ndpi_category_get_name
 ndpi_is_custom_category
 ndpi_is_subprotocol_informative
 ndpi_set_proto_category
+ndpi_get_api_version
\ No newline at end of file
diff --git a/src/include/ndpi_api.h b/src/include/ndpi_api.h
index 25a7612f2..230885d6d 100644
--- a/src/include/ndpi_api.h
+++ b/src/include/ndpi_api.h
@@ -31,6 +31,11 @@
 extern "C" {
 #endif
 
+  /* The #define below is used for apps that dynamically link with nDPI to make
+     sure that datastructures and in sync across versions
+  */
+#define NDPI_API_VERSION                      1
+  
 #define SIZEOF_ID_STRUCT (sizeof(struct ndpi_id_struct))
 #define SIZEOF_FLOW_STRUCT (sizeof(struct ndpi_flow_struct))
 
@@ -739,6 +744,7 @@ extern "C" {
   void * ndpi_malloc(size_t size);
   void * ndpi_calloc(unsigned long count, size_t size);
   void ndpi_free(void *ptr);
+  u_int8_t ndpi_get_api_version();
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/lib/ndpi_main.c b/src/lib/ndpi_main.c
index ee698a75f..afb0f39e7 100644
--- a/src/lib/ndpi_main.c
+++ b/src/lib/ndpi_main.c
@@ -5234,3 +5234,7 @@ void NDPI_DUMP_BITMASK(NDPI_PROTOCOL_BITMASK a) {
 
   printf("\n");
 }
+
+u_int8_t ndpi_get_api_version() {
+  return(NDPI_API_VERSION);
+}