Fix missing u_char, u_short and u_int typedefs for some platforms e.g.:

In file included from ../include/ndpi_main.h:34,
                 from ../include/ndpi_api.h:28,
                 from protocols/activision.c:26:
../include/ndpi_typedefs.h:294:3: error: unknown type name 'u_char'
  294 |   u_char h_dest[6];       /* destination eth addr */
      |   ^~~~~~

Signed-off-by: Toni Uhlig <[email protected]>

src/include/ndpi_typedefs.h

@@ -31,6 +31,20 @@
 /* Used by both nDPI core and patricia code under third-party */
 #include "ndpi_patricia_typedefs.h"
 
+#ifndef NDPI_CFFI_PREPROCESSING
+#ifndef u_char
+typedef unsigned char u_char;
+#endif
+
+#ifndef u_short
+typedef unsigned short u_short;
+#endif
+
+#ifndef u_int
+typedef unsigned int u_int;
+#endif
+#endif
+
 /* NDPI_LOG_LEVEL */
 typedef enum {
 	      NDPI_LOG_ERROR,

src/lib/ndpi_main.c

@@ -8489,7 +8489,8 @@ char *ndpi_strnstr(const char *s, const char *find, size_t slen) {
 /* ****************************************************** */
 
 /*
- * Same as ndpi_strnstr but case-insensitive
+ * Same as ndpi_strnstr but case-insensitive.
+ * Please note that this function is *NOT* equivalent to strncasecmp().
  */
 const char * ndpi_strncasestr(const char *str1, const char *str2, size_t len) {
   size_t str1_len = strnlen(str1, len);