From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- tools/fuzzing/ipc/IPCFuzzController.h | 193 ++++++++++++++++++++++++++++++++++ 1 file changed, 193 insertions(+) create mode 100644 tools/fuzzing/ipc/IPCFuzzController.h (limited to 'tools/fuzzing/ipc/IPCFuzzController.h') diff --git a/tools/fuzzing/ipc/IPCFuzzController.h b/tools/fuzzing/ipc/IPCFuzzController.h new file mode 100644 index 0000000000..faf89d9f81 --- /dev/null +++ b/tools/fuzzing/ipc/IPCFuzzController.h @@ -0,0 +1,193 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=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_IPCFuzzController_h +#define mozilla_ipc_IPCFuzzController_h + +#include "mozilla/Atomics.h" +#include "mozilla/Attributes.h" +#include "mozilla/HashTable.h" +#include "mozilla/Mutex.h" +#include "mozilla/fuzzing/Nyx.h" + +#include "nsIRunnable.h" +#include "nsThreadUtils.h" + +#include "chrome/common/ipc_message.h" +#include "mojo/core/ports/name.h" +#include "mojo/core/ports/event.h" + +#include "IPCMessageStart.h" + +#include +#include +#include +#include +#include + +#define MOZ_FUZZING_IPC_DROP_PEER(aReason) \ + mozilla::fuzzing::IPCFuzzController::instance().OnDropPeer( \ + aReason, __FILE__, __LINE__); + +#define MOZ_FUZZING_IPC_MT_CTOR() \ + mozilla::fuzzing::IPCFuzzController::instance().OnMessageTaskStart(); + +#define MOZ_FUZZING_IPC_MT_STOP() \ + mozilla::fuzzing::IPCFuzzController::instance().OnMessageTaskStop(); + +#define MOZ_FUZZING_IPC_PRE_FUZZ_MT_RUN() \ + mozilla::fuzzing::IPCFuzzController::instance().OnPreFuzzMessageTaskRun(); + +#define MOZ_FUZZING_IPC_PRE_FUZZ_MT_STOP() \ + mozilla::fuzzing::IPCFuzzController::instance().OnPreFuzzMessageTaskStop(); + +namespace mozilla { + +namespace ipc { +// We can't include ProtocolUtils.h here +class IProtocol; +typedef IPCMessageStart ProtocolId; + +class NodeChannel; +} // namespace ipc + +namespace fuzzing { + +class IPCFuzzController { + typedef std::pair SeqNoPair; + + typedef std::pair ActorIdPair; + + class IPCFuzzLoop final : public Runnable { + friend class IPCFuzzController; + + public: + NS_DECL_NSIRUNNABLE + + IPCFuzzLoop(); + + private: + ~IPCFuzzLoop() = default; + }; + + public: + static IPCFuzzController& instance(); + + void InitializeIPCTypes(); + bool GetRandomIPCMessageType(mozilla::ipc::ProtocolId pId, + uint16_t typeOffset, uint32_t* type); + + bool ObserveIPCMessage(mozilla::ipc::NodeChannel* channel, + IPC::Message& aMessage); + bool MakeTargetDecision(uint8_t portIndex, uint8_t portInstanceIndex, + uint8_t actorIndex, uint16_t typeOffset, + mojo::core::ports::PortName* name, int32_t* seqno, + uint64_t* fseqno, int32_t* actorId, uint32_t* type, + bool* is_cons, bool update = true); + + void OnActorConnected(mozilla::ipc::IProtocol* protocol); + void OnActorDestroyed(mozilla::ipc::IProtocol* protocol); + void OnDropPeer(const char* reason, const char* file, int line); + void OnMessageTaskStart(); + void OnMessageTaskStop(); + void OnPreFuzzMessageTaskRun(); + void OnPreFuzzMessageTaskStop(); + void OnChildReady() { childReady = true; } + void OnRunnableDone() { runnableDone = true; } + + uint32_t getPreFuzzMessageTaskCount() { return messageTaskCount; }; + uint32_t getMessageStartCount() { return messageStartCount; }; + uint32_t getMessageStopCount() { return messageStopCount; }; + + void StartFuzzing(mozilla::ipc::NodeChannel* channel, IPC::Message& aMessage); + + void SynchronizeOnMessageExecution(uint32_t expected_messages); + void AddToplevelActor(mojo::core::ports::PortName name, + mozilla::ipc::ProtocolId protocolId); + + private: + // This is a mapping from port name to a pair of last seen sequence numbers. + std::unordered_map portSeqNos; + + // This is a mapping from port name to node name. + std::unordered_map + portNodeName; + + // This maps each ProtocolId (IPCMessageStart) to the number of valid + // messages for that particular type. + std::unordered_map validMsgTypes; + + // This is a mapping from port name to pairs of actor Id and ProtocolId. + std::unordered_map> + actorIds; + + // If set, `lastActorPortName` is valid and fuzzing is pinned to this port. + Atomic useLastPortName; + + // Last port where a new actor appeared. Only valid with `useLastPortName`. + mojo::core::ports::PortName lastActorPortName; + + // Counter to indicate how long fuzzing should stay pinned to the last + // actor that appeared on `lastActorPortName`. + Atomic useLastActor; + + // This is the deterministic ordering of toplevel actors for fuzzing. + // In this matrix, each row (toplevel index) corresponds to one toplevel + // actor *type* while each entry in that row is an instance of that type, + // since some actors usually have multiple instances alive while others + // don't. For the exact ordering, please check the constructor for this + // class. + std::vector> portNames; + std::unordered_map portNameToIndex; + + // This is a set of all types that are constructors. + std::unordered_set constructorTypes; + + // This is the name of the target node. We select one Node based on a + // particular toplevel actor and then use this to pull in additional + // toplevel actors that are on the same node (i.e. belong to the same + // process pair). + mojo::core::ports::NodeName targetNodeName; + bool haveTargetNodeName = false; + + // This indicates that we have started the fuzzing thread and fuzzing will + // begin shortly. + bool fuzzingStartPending = false; + + // This is used as a signal from other threads that runnables we dispatched + // are completed. Right now we use this only when dispatching to the main + // thread to await the completion of all pending events. + Atomic runnableDone; + + // This is used to signal that the other process we are talking to is ready + // to start fuzzing. In the case of Parent <-> Child, a special IPC message + // is used to signal this. We might not be able to start fuzzing immediately + // hough if not all toplevel actors have been created yet. + Atomic childReady; + + // Current amount of pending message tasks. + Atomic messageStartCount; + Atomic messageStopCount; + + Atomic messageTaskCount; + + Vector sampleHeader; + + mozilla::ipc::NodeChannel* nodeChannel = nullptr; + + // This class is used both on the I/O and background threads as well as + // its own fuzzing thread. Those methods that alter non-threadsafe data + // structures need to aquire this mutex first. + Mutex mMutex; // MOZ_UNANNOTATED; + + IPCFuzzController(); + NYX_DISALLOW_COPY_AND_ASSIGN(IPCFuzzController); +}; + +} // namespace fuzzing +} // namespace mozilla + +#endif -- cgit v1.2.3