1 // Protocol Buffers - Google's data interchange format
2 // Copyright 2008 Google Inc. All rights reserved.
3 // https://developers.google.com/protocol-buffers/
4 //
5 // Redistribution and use in source and binary forms, with or without
6 // modification, are permitted provided that the following conditions are
7 // met:
8 //
9 // * Redistributions of source code must retain the above copyright
10 // notice, this list of conditions and the following disclaimer.
11 // * Redistributions in binary form must reproduce the above
12 // copyright notice, this list of conditions and the following disclaimer
13 // in the documentation and/or other materials provided with the
14 // distribution.
15 // * Neither the name of Google Inc. nor the names of its
16 // contributors may be used to endorse or promote products derived from
17 // this software without specific prior written permission.
18 //
19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30
31 #ifndef GOOGLE_PROTOBUF_ARENA_TEST_UTIL_H__
32 #define GOOGLE_PROTOBUF_ARENA_TEST_UTIL_H__
33
34 #include <google/protobuf/stubs/logging.h>
35 #include <google/protobuf/stubs/common.h>
36 #include <google/protobuf/io/coded_stream.h>
37 #include <google/protobuf/io/zero_copy_stream_impl_lite.h>
38 #include <google/protobuf/arena.h>
39
40 namespace google {
41 namespace protobuf {
42
43 template <typename T, bool use_arena>
TestParseCorruptedString(const T & message)44 void TestParseCorruptedString(const T& message) {
45 int success_count = 0;
46 std::string s;
47 {
48 // Map order is not deterministic. To make the test deterministic we want
49 // to serialize the proto deterministically.
50 io::StringOutputStream output(&s);
51 io::CodedOutputStream out(&output);
52 out.SetSerializationDeterministic(true);
53 message.SerializePartialToCodedStream(&out);
54 }
55 const int kMaxIters = 900;
56 const int stride = s.size() <= kMaxIters ? 1 : s.size() / kMaxIters;
57 const int start = stride == 1 || use_arena ? 0 : (stride + 1) / 2;
58 for (int i = start; i < s.size(); i += stride) {
59 for (int c = 1 + (i % 17); c < 256; c += 2 * c + (i & 3)) {
60 s[i] ^= c;
61 Arena arena;
62 T* message = Arena::CreateMessage<T>(use_arena ? &arena : nullptr);
63 if (message->ParseFromString(s)) {
64 ++success_count;
65 }
66 if (!use_arena) {
67 delete message;
68 }
69 s[i] ^= c; // Restore s to its original state.
70 }
71 }
72 // This next line is a low bar. But getting through the test without crashing
73 // due to use-after-free or other bugs is a big part of what we're checking.
74 GOOGLE_CHECK_GT(success_count, 0);
75 }
76
77 namespace internal {
78
79 class NoHeapChecker {
80 public:
NoHeapChecker()81 NoHeapChecker() { capture_alloc.Hook(); }
82 ~NoHeapChecker();
83
84 private:
85 class NewDeleteCapture {
86 public:
87 // TOOD(xiaofeng): Implement this for opensource protobuf.
Hook()88 void Hook() {}
Unhook()89 void Unhook() {}
alloc_count()90 int alloc_count() { return 0; }
free_count()91 int free_count() { return 0; }
92 } capture_alloc;
93 };
94
95 } // namespace internal
96 } // namespace protobuf
97 } // namespace google
98
99 #endif // GOOGLE_PROTOBUF_ARENA_TEST_UTIL_H__
100