Add executable for use with AFL.

1 files changed, 92 insertions, 0 deletions

diff --git a/test/fuzzer.cpp b/test/fuzzer.cpp
new file mode 100644
index 00000000..5e46662e
--- /dev/null
+++ b/test/fuzzer.cpp
@@ -0,0 +1,92 @@
+/*
+	This file is part of solidity.
+
+	solidity is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	solidity is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ * Executable for use with AFL <http://lcamtuf.coredump.cx/afl>.
+ * Reads a single source from stdin and signals a failure for internal errors.
+ */
+
+#include <json/json.h>
+
+#include <string>
+#include <iostream>
+
+using namespace std;
+
+extern "C"
+{
+extern char const* compileJSON(char const* _input, bool _optimize);
+}
+
+string contains(string const& _haystack, vector<string> const& _needles)
+{
+	for (string const& needle: _needles)
+		if (_haystack.find(needle) != string::npos)
+			return needle;
+	return "";
+}
+
+int main()
+{
+	string input;
+	while (!cin.eof())
+	{
+		string s;
+		getline(cin, s);
+		input += s + '\n';
+	}
+
+	bool optimize = true;
+	string outputString(compileJSON(input.c_str(), optimize));
+	Json::Value outputJson;
+	if (!Json::Reader().parse(outputString, outputJson))
+	{
+		cout << "Compiler produced invalid JSON output." << endl;
+		return -1;
+	}
+	if (outputJson.isMember("errors"))
+	{
+		if (!outputJson["errors"].isArray())
+		{
+			cout << "Output JSON has \"errors\" but it is not an array." << endl;
+			return -1;
+		}
+		for (Json::Value const& error: outputJson["errors"])
+		{
+			string invalid = contains(error.asString(), vector<string>{
+				"Compiler error",
+				"Internal compiler error",
+				"Exception during compilation",
+				"Unknown exception during compilation",
+				"Unknown exception while generating contract data output",
+				"Unknown exception while generating formal method output",
+				"Unknown exception while generating source name output",
+				"Unknown error while generating JSON"
+			});
+			if (!invalid.empty())
+			{
+				cout << "Invalid error: \"" << invalid << "\"" << endl;
+				return -1;
+			}
+		}
+	}
+	else if (!outputJson.isMember("contracts"))
+	{
+		cout << "Output JSON has neither \"errors\" nor \"contracts\"." << endl;
+		return -1;
+	}
+	return 0;
+}