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/*
*
* Copyright 2016 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include <stdbool.h>
#include <dirent.h>
#include <gflags/gflags.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include <gtest/gtest.h>
#include <stdio.h>
#include <sys/types.h>
#include "src/core/lib/gpr/env.h"
#include "src/core/lib/iomgr/load_file.h"
#include "test/core/util/test_config.h"
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size);
extern bool squelch;
extern bool leak_check;
// In some distros, gflags is in the namespace google, and in some others,
// in gflags. This hack is enabling us to find both.
namespace google {}
namespace gflags {}
using namespace google;
using namespace gflags;
DEFINE_string(file, "", "Use this file as test data");
DEFINE_string(directory, "", "Use this directory as test data");
class FuzzerCorpusTest : public ::testing::TestWithParam<std::string> {};
TEST_P(FuzzerCorpusTest, RunOneExample) {
gpr_log(GPR_DEBUG, "Example file: %s", GetParam().c_str());
grpc_slice buffer;
squelch = false;
leak_check = false;
GPR_ASSERT(GRPC_LOG_IF_ERROR("load_file",
grpc_load_file(GetParam().c_str(), 0, &buffer)));
LLVMFuzzerTestOneInput(GRPC_SLICE_START_PTR(buffer),
GRPC_SLICE_LENGTH(buffer));
grpc_slice_unref(buffer);
}
class ExampleGenerator
: public ::testing::internal::ParamGeneratorInterface<std::string> {
public:
virtual ::testing::internal::ParamIteratorInterface<std::string>* Begin()
const;
virtual ::testing::internal::ParamIteratorInterface<std::string>* End() const;
private:
void Materialize() const {
if (examples_.empty()) {
if (!FLAGS_file.empty()) examples_.push_back(FLAGS_file);
if (!FLAGS_directory.empty()) {
char* test_srcdir = gpr_getenv("TEST_SRCDIR");
if (test_srcdir != nullptr) {
FLAGS_directory = test_srcdir +
std::string("/com_github_grpc_grpc/") +
FLAGS_directory;
}
DIR* dp;
struct dirent* ep;
dp = opendir(FLAGS_directory.c_str());
if (dp != nullptr) {
while ((ep = readdir(dp)) != nullptr) {
if (ep->d_type == DT_REG) {
examples_.push_back(FLAGS_directory + "/" + ep->d_name);
}
}
(void)closedir(dp);
} else {
perror("Couldn't open the directory");
abort();
}
gpr_free(test_srcdir);
}
}
}
mutable std::vector<std::string> examples_;
};
class ExampleIterator
: public ::testing::internal::ParamIteratorInterface<std::string> {
public:
ExampleIterator(const ExampleGenerator& base_,
std::vector<std::string>::const_iterator begin)
: base_(base_), begin_(begin), current_(begin) {}
virtual const ExampleGenerator* BaseGenerator() const { return &base_; }
virtual void Advance() { current_++; }
virtual ExampleIterator* Clone() const { return new ExampleIterator(*this); }
virtual const std::string* Current() const { return &*current_; }
virtual bool Equals(const ParamIteratorInterface<std::string>& other) const {
return &base_ == other.BaseGenerator() &&
current_ == dynamic_cast<const ExampleIterator*>(&other)->current_;
}
private:
ExampleIterator(const ExampleIterator& other)
: base_(other.base_), begin_(other.begin_), current_(other.current_) {}
const ExampleGenerator& base_;
const std::vector<std::string>::const_iterator begin_;
std::vector<std::string>::const_iterator current_;
};
::testing::internal::ParamIteratorInterface<std::string>*
ExampleGenerator::Begin() const {
Materialize();
return new ExampleIterator(*this, examples_.begin());
}
::testing::internal::ParamIteratorInterface<std::string>*
ExampleGenerator::End() const {
Materialize();
return new ExampleIterator(*this, examples_.end());
}
INSTANTIATE_TEST_CASE_P(
CorpusExamples, FuzzerCorpusTest,
::testing::internal::ParamGenerator<std::string>(new ExampleGenerator));
int main(int argc, char** argv) {
grpc::testing::TestEnvironment env(argc, argv);
ParseCommandLineFlags(&argc, &argv, true);
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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