contrib/fuzz/standalone_fuzz_target_runner.cc
changeset 43813 5a9e2ae9899b
child 43814 e137338e926b
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/contrib/fuzz/standalone_fuzz_target_runner.cc	Fri Dec 06 15:19:47 2019 -0500
@@ -0,0 +1,41 @@
+// Copyright 2017 Google Inc. All Rights Reserved.
+// Licensed under the Apache License, Version 2.0 (the "License");
+
+// Example of a standalone runner for "fuzz targets".
+// It reads all files passed as parameters and feeds their contents
+// one by one into the fuzz target (LLVMFuzzerTestOneInput).
+// This runner does not do any fuzzing, but allows us to run the fuzz target
+// on the test corpus (e.g. "do_stuff_test_data") or on a single file,
+// e.g. the one that comes from a bug report.
+
+#include <cassert>
+#include <fstream>
+#include <iostream>
+#include <vector>
+
+// Forward declare the "fuzz target" interface.
+// We deliberately keep this inteface simple and header-free.
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
+
+int main(int argc, char **argv)
+{
+	for (int i = 1; i < argc; i++) {
+		std::ifstream in(argv[i]);
+		in.seekg(0, in.end);
+		size_t length = in.tellg();
+		in.seekg(0, in.beg);
+		std::cout << "Reading " << length << " bytes from " << argv[i]
+		          << std::endl;
+		// Allocate exactly length bytes so that we reliably catch
+		// buffer overflows.
+		std::vector<char> bytes(length);
+		in.read(bytes.data(), bytes.size());
+		assert(in);
+		LLVMFuzzerTestOneInput(
+		    reinterpret_cast<const uint8_t *>(bytes.data()),
+		    bytes.size());
+		std::cout << "Execution successful" << std::endl;
+	}
+	return 0;
+}
+// no-check-code since this is from a third party