From a064261e854317bcc48aab31f86f3cbee67855c3 Mon Sep 17 00:00:00 2001
From: Ivan Nardi <12729895+IvanNardi@users.noreply.github.com>
Date: Sat, 11 May 2024 23:37:31 +0200
Subject: Revert `ndpi_strnstr()` optimization introduced in a813121e0 (#2439)

New implementation fails tests 11b, 12 and 13.
Revert to the original (BSD) implementation (with also some basic
parameters check)
---
 example/ndpiReader.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'example/ndpiReader.c')

diff --git a/example/ndpiReader.c b/example/ndpiReader.c
index 7a326f71b..cf26d0841 100644
--- a/example/ndpiReader.c
+++ b/example/ndpiReader.c
@@ -5691,6 +5691,16 @@ void strnstrUnitTest(void) {
 
   /* Test 10: substring equal to the string */
   assert(strcmp(ndpi_strnstr("string", "string", 6), "string") == 0);
+
+  /* Test 11a,b: max_length bigger that string length */
+  assert(strcmp(ndpi_strnstr("string", "string", 66), "string") == 0);
+  assert(ndpi_strnstr("string", "a", 66) == NULL);
+
+  /* Test 12: substring longer than the string */
+  assert(ndpi_strnstr("string", "stringA", 6) == NULL);
+
+  /* Test 13 */
+  assert(ndpi_strnstr("abcdef", "abc", 2) == NULL);
 }
 
 /* *********************************************** */
-- 
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