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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
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#ifndef GOOGLE_PROTOBUF_ARENA_TEST_UTIL_H__
#define GOOGLE_PROTOBUF_ARENA_TEST_UTIL_H__
#include <google/protobuf/stubs/logging.h>
#include <google/protobuf/stubs/common.h>
#include <google/protobuf/arena.h>
namespace google {
namespace protobuf {
template <typename T, bool use_arena>
void TestParseCorruptedString(const T& message) {
int success_count = 0;
string s = message.SerializeAsString();
const int kMaxIters = 900;
const int stride = s.size() <= kMaxIters ? 1 : s.size() / kMaxIters;
const int start = stride == 1 || use_arena ? 0 : (stride + 1) / 2;
for (int i = start; i < s.size(); i += stride) {
for (int c = 1 + (i % 17); c < 256; c += 2 * c + (i & 3)) {
s[i] ^= c;
google::protobuf::Arena arena;
T* message =
google::protobuf::Arena::CreateMessage<T>(use_arena ? &arena : nullptr);
if (message->ParseFromString(s)) {
++success_count;
}
if (!use_arena) {
delete message;
}
s[i] ^= c; // Restore s to its original state.
}
}
// This next line is a low bar. But getting through the test without crashing
// due to use-after-free or other bugs is a big part of what we're checking.
GOOGLE_CHECK_GT(success_count, 0);
}
namespace internal {
class NoHeapChecker {
public:
NoHeapChecker() {
capture_alloc.Hook();
}
~NoHeapChecker();
private:
class NewDeleteCapture {
public:
// TOOD(xiaofeng): Implement this for opensource protobuf.
void Hook() {}
void Unhook() {}
int alloc_count() { return 0; }
int free_count() { return 0; }
} capture_alloc;
};
} // namespace internal
} // namespace protobuf
} // namespace google
#endif // GOOGLE_PROTOBUF_ARENA_TEST_UTIL_H__