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/*
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>.
*/
#include <libdevcore/CommonIO.h>
#include <libevmasm/Assembly.h>
#include <libevmasm/ConstantOptimiser.h>
#include <libsolc/libsolc.h>
#include <libdevcore/JSON.h>
#include <boost/program_options.hpp>
#include <string>
#include <iostream>
using namespace std;
using namespace dev;
using namespace dev::eth;
namespace po = boost::program_options;
namespace
{
bool quiet = false;
string contains(string const& _haystack, vector<string> const& _needles)
{
for (string const& needle: _needles)
if (_haystack.find(needle) != string::npos)
return needle;
return "";
}
void testConstantOptimizer()
{
if (!quiet)
cout << "Testing constant optimizer" << endl;
vector<u256> numbers;
while (!cin.eof())
{
h256 data;
cin.read(reinterpret_cast<char*>(data.data()), 32);
numbers.push_back(u256(data));
}
if (!quiet)
cout << "Got " << numbers.size() << " inputs:" << endl;
Assembly assembly;
for (u256 const& n: numbers)
{
if (!quiet)
cout << n << endl;
assembly.append(n);
}
for (bool isCreation: {false, true})
{
for (unsigned runs: {1, 2, 3, 20, 40, 100, 200, 400, 1000})
{
ConstantOptimisationMethod::optimiseConstants(
isCreation,
runs,
EVMVersion{},
assembly,
const_cast<AssemblyItems&>(assembly.items())
);
}
}
}
void testStandardCompiler()
{
if (!quiet)
cout << "Testing compiler via JSON interface." << endl;
string input = readStandardInput();
string outputString(compileStandard(input.c_str(), NULL));
Json::Value output;
if (!jsonParseStrict(outputString, output))
{
cout << "Compiler produced invalid JSON output." << endl;
abort();
}
if (output.isMember("errors"))
for (auto const& error: output["errors"])
{
string invalid = contains(error["type"].asString(), vector<string>{
"Exception",
"InternalCompilerError"
});
if (!invalid.empty())
{
cout << "Invalid error: \"" << error["type"].asString() << "\"" << endl;
abort();
}
}
}
void testCompiler(bool optimize)
{
if (!quiet)
cout << "Testing compiler " << (optimize ? "with" : "without") << " optimizer." << endl;
string input = readStandardInput();
string outputString(compileJSON(input.c_str(), optimize));
Json::Value outputJson;
if (!jsonParseStrict(outputString, outputJson))
{
cout << "Compiler produced invalid JSON output." << endl;
abort();
}
if (outputJson.isMember("errors"))
{
if (!outputJson["errors"].isArray())
{
cout << "Output JSON has \"errors\" but it is not an array." << endl;
abort();
}
for (Json::Value const& error: outputJson["errors"])
{
string invalid = contains(error.asString(), vector<string>{
"Internal compiler error",
"Exception during compilation",
"Unknown exception during compilation",
"Unknown exception while generating contract data output",
"Unknown exception while generating source name output",
"Unknown error while generating JSON"
});
if (!invalid.empty())
{
cout << "Invalid error: \"" << error.asString() << "\"" << endl;
abort();
}
}
}
else if (!outputJson.isMember("contracts"))
{
cout << "Output JSON has neither \"errors\" nor \"contracts\"." << endl;
abort();
}
}
}
int main(int argc, char** argv)
{
po::options_description options(
R"(solfuzzer, fuzz-testing binary for use with AFL.
Usage: solfuzzer [Options] < input
Reads a single source from stdin, compiles it and signals a failure for internal errors.
Allowed options)",
po::options_description::m_default_line_length,
po::options_description::m_default_line_length - 23);
options.add_options()
("help", "Show this help screen.")
("quiet", "Only output errors.")
(
"standard-json",
"Test via the standard-json interface, i.e. "
"input is expected to be JSON-encoded instead of "
"plain source file."
)
(
"const-opt",
"Run the constant optimizer instead of compiling. "
"Expects a binary string of up to 32 bytes on stdin."
)
(
"without-optimizer",
"Run without optimizations. Cannot be used together with standard-json."
);
po::variables_map arguments;
try
{
po::command_line_parser cmdLineParser(argc, argv);
cmdLineParser.options(options);
po::store(cmdLineParser.run(), arguments);
}
catch (po::error const& _exception)
{
cerr << _exception.what() << endl;
return 1;
}
if (arguments.count("quiet"))
quiet = true;
if (arguments.count("help"))
cout << options;
else if (arguments.count("const-opt"))
testConstantOptimizer();
else if (arguments.count("standard-json"))
testStandardCompiler();
else
testCompiler(!arguments.count("without-optimizer"));
return 0;
}
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