Prepare fuzzing engine

src/fuzzing-engine/random_generator.cpp

@@ -0,0 +1,34 @@
+#include "random_generator.hpp"
+
+namespace fuzzer
+{
+	random_generator::random_generator()
+		: rng_(std::random_device()())
+	{
+	}
+
+	std::mt19937::result_type random_generator::generate_number()
+	{
+		return this->distribution_(this->rng_);
+	}
+
+	void random_generator::fill(void* data, const size_t size)
+	{
+		this->fill(std::span(static_cast<uint8_t*>(data), size));
+	}
+
+	void random_generator::fill(std::span<uint8_t> data)
+	{
+		size_t i = 0;
+		while (i < data.size())
+		{
+			const auto number = this->generate_number();
+
+			const auto remaining_data = data.size() - i;
+			const auto data_to_fill = std::min(remaining_data, sizeof(number));
+
+			memcpy(data.data() + i, &number, data_to_fill);
+			i += data_to_fill;
+		}
+	}
+}