aboutsummaryrefslogtreecommitdiffhomepage
path: root/test/core/util/fuzzer_corpus_test.cc
blob: 7849321257dff0cb880d8c6518465611bcda40c8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
/*
 *
 * 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/log.h>
#include <gtest/gtest.h>
#include <stdio.h>
#include <sys/types.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()) {
        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();
        }
      }
    }
  }

  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_test_init(argc, argv);
  ParseCommandLineFlags(&argc, &argv, true);
  ::testing::InitGoogleTest(&argc, argv);

  return RUN_ALL_TESTS();
}