1 files changed, 136 insertions, 0 deletions
diff --git a/tools/fuzzing/faulty/Faulty.h b/tools/fuzzing/faulty/Faulty.h
new file mode 100644
index 0000000000..922f4d7c2d
--- /dev/null
+++ b/tools/fuzzing/faulty/Faulty.h
@@ -0,0 +1,136 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_ipc_Faulty_h
+#define mozilla_ipc_Faulty_h
+
+#include <set>
+#include <string>
+#include <vector>
+#include "base/string16.h"
+#include "nsDebug.h"
+#include "nsTArray.h"
+#include "mozilla/UniquePtr.h"
+
+#ifdef IsLoggingEnabled
+// This is defined in the Windows SDK urlmon.h
+#  undef IsLoggingEnabled
+#endif
+
+#define FAULTY_DEFAULT_PROBABILITY 1000
+#define FAULTY_DEFAULT_MUTATION_FACTOR 10
+#define FAULTY_LOG(fmt, args...)                                  \
+  if (mozilla::ipc::Faulty::IsLoggingEnabled()) {                 \
+    printf_stderr("[Faulty] (%10u) " fmt "\n", getpid(), ##args); \
+  }
+
+namespace IPC {
+// Needed for blacklisting messages.
+class Message;
+class MessageReader;
+class MessageWriter;
+}  // namespace IPC
+
+namespace mozilla {
+namespace ipc {
+
+class Faulty {
+ public:
+  // Used as a default argument for the Fuzz|datatype| methods.
+  static unsigned int DefaultProbability();
+  static bool IsLoggingEnabled(void);
+  static std::vector<uint8_t> GetDataFromIPCMessage(IPC::Message* aMsg);
+  static nsresult CreateOutputDirectory(const char* aPathname);
+  static nsresult ReadFile(const char* aPathname, nsTArray<nsCString>& aArray);
+  static void CopyFDs(IPC::Message* aDstMsg, IPC::Message* aSrcMsg);
+
+  static Faulty& instance();
+
+  // Fuzzing methods for Pickle.
+  void FuzzBool(bool* aValue, unsigned int aProbability = DefaultProbability());
+  void FuzzChar(char* aValue, unsigned int aProbability = DefaultProbability());
+  void FuzzUChar(unsigned char* aValue,
+                 unsigned int aProbability = DefaultProbability());
+  void FuzzInt16(int16_t* aValue,
+                 unsigned int aProbability = DefaultProbability());
+  void FuzzUInt16(uint16_t* aValue,
+                  unsigned int aProbability = DefaultProbability());
+  void FuzzInt(int* aValue, unsigned int aProbability = DefaultProbability());
+  void FuzzUInt32(uint32_t* aValue,
+                  unsigned int aProbability = DefaultProbability());
+  void FuzzLong(long* aValue, unsigned int aProbability = DefaultProbability());
+  void FuzzULong(unsigned long* aValue,
+                 unsigned int aProbability = DefaultProbability());
+  void FuzzInt64(int64_t* aValue,
+                 unsigned int aProbability = DefaultProbability());
+  void FuzzUInt64(uint64_t* aValue,
+                  unsigned int aProbability = DefaultProbability());
+  void FuzzFloat(float* aValue,
+                 unsigned int aProbability = DefaultProbability());
+  void FuzzDouble(double* aValue,
+                  unsigned int aProbability = DefaultProbability());
+  void FuzzString(std::string& aValue,
+                  unsigned int aProbability = DefaultProbability());
+  void FuzzWString(std::wstring& aValue,
+                   unsigned int aProbability = DefaultProbability());
+  void FuzzBytes(void* aData, int aLength,
+                 unsigned int aProbability = DefaultProbability());
+
+  // Fuzzing methods for pipe fuzzing.
+  void MaybeCollectAndClosePipe(
+      int aPipe, unsigned int aProbability = DefaultProbability());
+
+  // Fuzzing methods for message blob fuzzing.
+  void DumpMessage(const char* aChannel, IPC::Message* aMsg,
+                   std::string aAppendix = nullptr);
+  bool IsMessageNameBlacklisted(const char* aMessageName);
+  UniquePtr<IPC::Message> MutateIPCMessage(
+      const char* aChannel, UniquePtr<IPC::Message> aMsg,
+      unsigned int aProbability = DefaultProbability());
+
+  void LogMessage(const char* aChannel, IPC::Message* aMsg);
+
+ private:
+  std::set<int> mFds;
+
+  const bool mFuzzMessages;
+  const bool mFuzzPipes;
+  const bool mFuzzPickle;
+  const bool mUseLargeValues;
+  const bool mUseAsWhitelist;
+  const bool mIsValidProcessType;
+
+  const char* mMessagePath;
+  const char* mBlacklistPath;
+
+  size_t sMsgCounter;
+
+  Faulty();
+  DISALLOW_EVIL_CONSTRUCTORS(Faulty);
+
+  static bool IsValidProcessType(void);
+  static uint32_t MutationFactor();
+
+  // Fuzzing methods for Pickle
+  void MutateBool(bool* aValue);
+  void MutateChar(char* aValue);
+  void MutateUChar(unsigned char* aValue);
+  void MutateInt16(int16_t* aValue);
+  void MutateUInt16(uint16_t* aValue);
+  void MutateInt(int* aValue);
+  void MutateUInt32(uint32_t* aValue);
+  void MutateLong(long* aValue);
+  void MutateULong(unsigned long* aValue);
+  void MutateInt64(int64_t* aValue);
+  void MutateUInt64(uint64_t* aValue);
+  void MutateFloat(float* aValue);
+  void MutateDouble(double* aValue);
+};
+
+}  // namespace ipc
+}  // namespace mozilla
+
+#endif