mirror of
https://github.com/nlohmann/json.git
synced 2024-08-23 21:42:29 +02:00
146 lines
5.9 KiB
C
146 lines
5.9 KiB
C
|
//===- FuzzerMutate.h - Internal header for the Fuzzer ----------*- C++ -* ===//
|
||
|
//
|
||
|
// The LLVM Compiler Infrastructure
|
||
|
//
|
||
|
// This file is distributed under the University of Illinois Open Source
|
||
|
// License. See LICENSE.TXT for details.
|
||
|
//
|
||
|
//===----------------------------------------------------------------------===//
|
||
|
// fuzzer::MutationDispatcher
|
||
|
//===----------------------------------------------------------------------===//
|
||
|
|
||
|
#ifndef LLVM_FUZZER_MUTATE_H
|
||
|
#define LLVM_FUZZER_MUTATE_H
|
||
|
|
||
|
#include "FuzzerDefs.h"
|
||
|
#include "FuzzerDictionary.h"
|
||
|
#include "FuzzerRandom.h"
|
||
|
|
||
|
namespace fuzzer {
|
||
|
|
||
|
class MutationDispatcher {
|
||
|
public:
|
||
|
MutationDispatcher(Random &Rand, const FuzzingOptions &Options);
|
||
|
~MutationDispatcher() {}
|
||
|
/// Indicate that we are about to start a new sequence of mutations.
|
||
|
void StartMutationSequence();
|
||
|
/// Print the current sequence of mutations.
|
||
|
void PrintMutationSequence();
|
||
|
/// Indicate that the current sequence of mutations was successfull.
|
||
|
void RecordSuccessfulMutationSequence();
|
||
|
/// Mutates data by invoking user-provided mutator.
|
||
|
size_t Mutate_Custom(uint8_t *Data, size_t Size, size_t MaxSize);
|
||
|
/// Mutates data by invoking user-provided crossover.
|
||
|
size_t Mutate_CustomCrossOver(uint8_t *Data, size_t Size, size_t MaxSize);
|
||
|
/// Mutates data by shuffling bytes.
|
||
|
size_t Mutate_ShuffleBytes(uint8_t *Data, size_t Size, size_t MaxSize);
|
||
|
/// Mutates data by erasing bytes.
|
||
|
size_t Mutate_EraseBytes(uint8_t *Data, size_t Size, size_t MaxSize);
|
||
|
/// Mutates data by inserting a byte.
|
||
|
size_t Mutate_InsertByte(uint8_t *Data, size_t Size, size_t MaxSize);
|
||
|
/// Mutates data by inserting several repeated bytes.
|
||
|
size_t Mutate_InsertRepeatedBytes(uint8_t *Data, size_t Size, size_t MaxSize);
|
||
|
/// Mutates data by chanding one byte.
|
||
|
size_t Mutate_ChangeByte(uint8_t *Data, size_t Size, size_t MaxSize);
|
||
|
/// Mutates data by chanding one bit.
|
||
|
size_t Mutate_ChangeBit(uint8_t *Data, size_t Size, size_t MaxSize);
|
||
|
/// Mutates data by copying/inserting a part of data into a different place.
|
||
|
size_t Mutate_CopyPart(uint8_t *Data, size_t Size, size_t MaxSize);
|
||
|
|
||
|
/// Mutates data by adding a word from the manual dictionary.
|
||
|
size_t Mutate_AddWordFromManualDictionary(uint8_t *Data, size_t Size,
|
||
|
size_t MaxSize);
|
||
|
|
||
|
/// Mutates data by adding a word from the temporary automatic dictionary.
|
||
|
size_t Mutate_AddWordFromTemporaryAutoDictionary(uint8_t *Data, size_t Size,
|
||
|
size_t MaxSize);
|
||
|
|
||
|
/// Mutates data by adding a word from the TORC.
|
||
|
size_t Mutate_AddWordFromTORC(uint8_t *Data, size_t Size, size_t MaxSize);
|
||
|
|
||
|
/// Mutates data by adding a word from the persistent automatic dictionary.
|
||
|
size_t Mutate_AddWordFromPersistentAutoDictionary(uint8_t *Data, size_t Size,
|
||
|
size_t MaxSize);
|
||
|
|
||
|
/// Tries to find an ASCII integer in Data, changes it to another ASCII int.
|
||
|
size_t Mutate_ChangeASCIIInteger(uint8_t *Data, size_t Size, size_t MaxSize);
|
||
|
/// Change a 1-, 2-, 4-, or 8-byte integer in interesting ways.
|
||
|
size_t Mutate_ChangeBinaryInteger(uint8_t *Data, size_t Size, size_t MaxSize);
|
||
|
|
||
|
/// CrossOver Data with some other element of the corpus.
|
||
|
size_t Mutate_CrossOver(uint8_t *Data, size_t Size, size_t MaxSize);
|
||
|
|
||
|
/// Applies one of the configured mutations.
|
||
|
/// Returns the new size of data which could be up to MaxSize.
|
||
|
size_t Mutate(uint8_t *Data, size_t Size, size_t MaxSize);
|
||
|
/// Applies one of the default mutations. Provided as a service
|
||
|
/// to mutation authors.
|
||
|
size_t DefaultMutate(uint8_t *Data, size_t Size, size_t MaxSize);
|
||
|
|
||
|
/// Creates a cross-over of two pieces of Data, returns its size.
|
||
|
size_t CrossOver(const uint8_t *Data1, size_t Size1, const uint8_t *Data2,
|
||
|
size_t Size2, uint8_t *Out, size_t MaxOutSize);
|
||
|
|
||
|
void AddWordToManualDictionary(const Word &W);
|
||
|
|
||
|
void AddWordToAutoDictionary(DictionaryEntry DE);
|
||
|
void ClearAutoDictionary();
|
||
|
void PrintRecommendedDictionary();
|
||
|
|
||
|
void SetCorpus(const InputCorpus *Corpus) { this->Corpus = Corpus; }
|
||
|
|
||
|
Random &GetRand() { return Rand; }
|
||
|
|
||
|
private:
|
||
|
|
||
|
struct Mutator {
|
||
|
size_t (MutationDispatcher::*Fn)(uint8_t *Data, size_t Size, size_t Max);
|
||
|
const char *Name;
|
||
|
};
|
||
|
|
||
|
size_t AddWordFromDictionary(Dictionary &D, uint8_t *Data, size_t Size,
|
||
|
size_t MaxSize);
|
||
|
size_t MutateImpl(uint8_t *Data, size_t Size, size_t MaxSize,
|
||
|
const std::vector<Mutator> &Mutators);
|
||
|
|
||
|
size_t InsertPartOf(const uint8_t *From, size_t FromSize, uint8_t *To,
|
||
|
size_t ToSize, size_t MaxToSize);
|
||
|
size_t CopyPartOf(const uint8_t *From, size_t FromSize, uint8_t *To,
|
||
|
size_t ToSize);
|
||
|
size_t ApplyDictionaryEntry(uint8_t *Data, size_t Size, size_t MaxSize,
|
||
|
DictionaryEntry &DE);
|
||
|
|
||
|
template <class T>
|
||
|
DictionaryEntry MakeDictionaryEntryFromCMP(T Arg1, T Arg2,
|
||
|
const uint8_t *Data, size_t Size);
|
||
|
|
||
|
Random &Rand;
|
||
|
const FuzzingOptions &Options;
|
||
|
|
||
|
// Dictionary provided by the user via -dict=DICT_FILE.
|
||
|
Dictionary ManualDictionary;
|
||
|
// Temporary dictionary modified by the fuzzer itself,
|
||
|
// recreated periodically.
|
||
|
Dictionary TempAutoDictionary;
|
||
|
// Persistent dictionary modified by the fuzzer, consists of
|
||
|
// entries that led to successfull discoveries in the past mutations.
|
||
|
Dictionary PersistentAutoDictionary;
|
||
|
|
||
|
std::vector<Mutator> CurrentMutatorSequence;
|
||
|
std::vector<DictionaryEntry *> CurrentDictionaryEntrySequence;
|
||
|
|
||
|
static const size_t kCmpDictionaryEntriesDequeSize = 16;
|
||
|
DictionaryEntry CmpDictionaryEntriesDeque[kCmpDictionaryEntriesDequeSize];
|
||
|
size_t CmpDictionaryEntriesDequeIdx = 0;
|
||
|
|
||
|
const InputCorpus *Corpus = nullptr;
|
||
|
std::vector<uint8_t> MutateInPlaceHere;
|
||
|
|
||
|
std::vector<Mutator> Mutators;
|
||
|
std::vector<Mutator> DefaultMutators;
|
||
|
};
|
||
|
|
||
|
} // namespace fuzzer
|
||
|
|
||
|
#endif // LLVM_FUZZER_MUTATE_H
|