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/* -*- 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 https://mozilla.org/MPL/2.0/. */
#ifndef IPC_GLUE_PROTOCOLMESSAGEUTILS_H
#define IPC_GLUE_PROTOCOLMESSAGEUTILS_H
#include <stdint.h>
#include <string>
#include "base/string_util.h"
#include "chrome/common/ipc_channel.h"
#include "chrome/common/ipc_message_utils.h"
#include "mozilla/Assertions.h"
#include "mozilla/ipc/ProtocolUtils.h"
#include "mozilla/ipc/Transport.h"
class PickleIterator;
namespace mozilla::ipc {
class FileDescriptor;
template <class PFooSide>
class Endpoint;
template <class PFooSide>
class ManagedEndpoint;
template <typename P>
struct IPDLParamTraits;
} // namespace mozilla::ipc
namespace IPC {
class Message;
template <>
struct ParamTraits<mozilla::ipc::ActorHandle> {
typedef mozilla::ipc::ActorHandle paramType;
static void Write(Message* aMsg, const paramType& aParam) {
IPC::WriteParam(aMsg, aParam.mId);
}
static bool Read(const Message* aMsg, PickleIterator* aIter,
paramType* aResult) {
int id;
if (IPC::ReadParam(aMsg, aIter, &id)) {
aResult->mId = id;
return true;
}
return false;
}
static void Log(const paramType& aParam, std::wstring* aLog) {
aLog->append(StringPrintf(L"(%d)", aParam.mId));
}
};
template <class PFooSide>
struct ParamTraits<mozilla::ipc::Endpoint<PFooSide>> {
typedef mozilla::ipc::Endpoint<PFooSide> paramType;
static void Write(Message* aMsg, const paramType& aParam) {
IPC::WriteParam(aMsg, aParam.mValid);
if (!aParam.mValid) {
return;
}
IPC::WriteParam(aMsg, static_cast<uint32_t>(aParam.mMode));
// We duplicate the descriptor so that our own file descriptor remains
// valid after the write. An alternative would be to set
// aParam.mTransport.mValid to false, but that won't work because aParam
// is const.
mozilla::ipc::TransportDescriptor desc =
mozilla::ipc::DuplicateDescriptor(aParam.mTransport);
IPC::WriteParam(aMsg, desc);
IPC::WriteParam(aMsg, aParam.mMyPid);
IPC::WriteParam(aMsg, aParam.mOtherPid);
}
static bool Read(const Message* aMsg, PickleIterator* aIter,
paramType* aResult) {
MOZ_RELEASE_ASSERT(!aResult->mValid);
if (!IPC::ReadParam(aMsg, aIter, &aResult->mValid)) {
return false;
}
if (!aResult->mValid) {
// Object is empty, but read succeeded.
return true;
}
uint32_t mode;
if (!IPC::ReadParam(aMsg, aIter, &mode) ||
!IPC::ReadParam(aMsg, aIter, &aResult->mTransport) ||
!IPC::ReadParam(aMsg, aIter, &aResult->mMyPid) ||
!IPC::ReadParam(aMsg, aIter, &aResult->mOtherPid)) {
return false;
}
aResult->mMode = Channel::Mode(mode);
return true;
}
static void Log(const paramType& aParam, std::wstring* aLog) {
aLog->append(StringPrintf(L"Endpoint"));
}
};
template <class PFooSide>
struct ParamTraits<mozilla::ipc::ManagedEndpoint<PFooSide>> {
typedef mozilla::ipc::ManagedEndpoint<PFooSide> paramType;
static void Write(Message* aMsg, const paramType& aParam) {
IPC::WriteParam(aMsg, aParam.mId);
}
static bool Read(const Message* aMsg, PickleIterator* aIter,
paramType* aResult) {
MOZ_RELEASE_ASSERT(aResult->mId == 0);
if (!IPC::ReadParam(aMsg, aIter, &aResult->mId)) {
return false;
}
return true;
}
static void Log(const paramType& aParam, std::wstring* aLog) {
aLog->append(StringPrintf(L"ManagedEndpoint"));
}
};
} // namespace IPC
namespace mozilla::ipc {
template <>
struct IPDLParamTraits<FileDescriptor> {
typedef FileDescriptor paramType;
static void Write(IPC::Message* aMsg, IProtocol* aActor,
const paramType& aParam);
static bool Read(const IPC::Message* aMsg, PickleIterator* aIter,
IProtocol* aActor, paramType* aResult);
};
} // namespace mozilla::ipc
#endif // IPC_GLUE_PROTOCOLMESSAGEUTILS_H
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