From 560280e6f082d22e6a9de8e537b7876bacf8d072 Mon Sep 17 00:00:00 2001
From: Ivan Nardi <12729895+IvanNardi@users.noreply.github.com>
Date: Fri, 23 Dec 2022 19:07:13 +0100
Subject: fuzz: add fuzzer testing nDPI (initial) configurations (#1830)

The goal of this fuzzer is to test init and deinit of the library, with
different configurations. In details:
* random memory allocation failures, even during init phase
* random `ndpi_init_prefs` parameter of `ndpi_init_detection_module()`
* random LRU caches sizes
* random bitmask of enabled protocols
* random parameters of `ndpi_set_detection_preferences()`
* random initialization of opportunistic TLS
* random load/don't load of configuration files

This new fuzzer is a C++ file, because it uses `FuzzedDataProvider`
class (see
https://github.com/google/fuzzing/blob/master/docs/split-inputs.md).
Note that the (existing) fuzzers need to be linked with C++ compiler
anyway, so this new fuzzer doesn't add any new requirements.
---
 fuzz/fuzz_common_code.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'fuzz/fuzz_common_code.h')

diff --git a/fuzz/fuzz_common_code.h b/fuzz/fuzz_common_code.h
index 5225446ad..9f26ea060 100644
--- a/fuzz/fuzz_common_code.h
+++ b/fuzz/fuzz_common_code.h
@@ -3,7 +3,22 @@
 
 #include "ndpi_api.h"
 
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#ifdef ENABLE_MEM_ALLOC_FAILURES
+void *malloc_wrapper(size_t size);
+void free_wrapper(void *freeable);
+void set_mem_alloc_state(int value);
+#endif
+
 void fuzz_init_detection_module(struct ndpi_detection_module_struct **ndpi_info_mod,
 				int enable_log);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif
-- 
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