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[lib/Fuzzer] extend the fuzzer interface to allow user-supplied mutators

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238059 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kostya Serebryany
2015-05-22 22:35:31 +00:00
parent d8319655f2
commit ebada2c2bc
12 changed files with 258 additions and 67 deletions
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20
lib/Fuzzer/FuzzerInternal.h
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@@ -33,9 +33,10 @@ void CopyFileToErr(const std::string &Path);
std::string DirPlusFile(const std::string &DirPath,
const std::string &FileName);
void Mutate(Unit *U, size_t MaxLen);
size_t Mutate(uint8_t *Data, size_t Size, size_t MaxSize);
void CrossOver(const Unit &A, const Unit &B, Unit *U, size_t MaxLen);
size_t CrossOver(const uint8_t *Data1, size_t Size1, const uint8_t *Data2,
size_t Size2, uint8_t *Out, size_t MaxOutSize);
void Print(const Unit &U, const char *PrintAfter = "");
void PrintASCII(const Unit &U, const char *PrintAfter = "");
@@ -72,7 +73,7 @@ class Fuzzer {
std::string SyncCommand;
std::vector<std::string> Tokens;
};
Fuzzer(UserCallback Callback, FuzzingOptions Options);
Fuzzer(UserSuppliedFuzzer &USF, FuzzingOptions Options);
void AddToCorpus(const Unit &U) { Corpus.push_back(U); }
void Loop(size_t NumIterations);
void ShuffleAndMinimize();
@@ -144,7 +145,7 @@ class Fuzzer {
return Res;
}
UserCallback Callback;
UserSuppliedFuzzer &USF;
FuzzingOptions Options;
system_clock::time_point ProcessStartTime = system_clock::now();
system_clock::time_point LastExternalSync = system_clock::now();
@@ -153,4 +154,15 @@ class Fuzzer {
long EpochOfLastReadOfOutputCorpus = 0;
};
class SimpleUserSuppliedFuzzer: public UserSuppliedFuzzer {
public:
SimpleUserSuppliedFuzzer(UserCallback Callback) : Callback(Callback) {}
virtual void TargetFunction(const uint8_t *Data, size_t Size) {
return Callback(Data, Size);
}
private:
UserCallback Callback;
};
}; // namespace fuzzer