From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- ipc/glue/IPCMessageUtilsSpecializations.h | 802 ++++++++++++++++++++++++++++++ 1 file changed, 802 insertions(+) create mode 100644 ipc/glue/IPCMessageUtilsSpecializations.h (limited to 'ipc/glue/IPCMessageUtilsSpecializations.h') diff --git a/ipc/glue/IPCMessageUtilsSpecializations.h b/ipc/glue/IPCMessageUtilsSpecializations.h new file mode 100644 index 0000000000..4f357405d9 --- /dev/null +++ b/ipc/glue/IPCMessageUtilsSpecializations.h @@ -0,0 +1,802 @@ +/* -*- 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 __IPC_GLUE_IPCMESSAGEUTILSSPECIALIZATIONS_H__ +#define __IPC_GLUE_IPCMESSAGEUTILSSPECIALIZATIONS_H__ + +#include +#include +#include +#include +#include +#include +#include +#include +#include "chrome/common/ipc_message.h" +#include "chrome/common/ipc_message_utils.h" +#include "ipc/EnumSerializer.h" +#include "ipc/IPCMessageUtils.h" +#include "mozilla/Assertions.h" +#include "mozilla/BitSet.h" +#include "mozilla/EnumSet.h" +#include "mozilla/EnumTypeTraits.h" +#include "mozilla/IntegerRange.h" +#include "mozilla/Maybe.h" +#include "mozilla/TimeStamp.h" +#ifdef XP_WIN +# include "mozilla/TimeStamp_windows.h" +#endif + +#include "mozilla/UniquePtr.h" +#include "mozilla/Unused.h" +#include "mozilla/Vector.h" +#include "mozilla/dom/ipc/StructuredCloneData.h" +#include "nsCSSPropertyID.h" +#include "nsDebug.h" +#include "nsIContentPolicy.h" +#include "nsID.h" +#include "nsILoadInfo.h" +#include "nsIThread.h" +#include "nsLiteralString.h" +#include "nsNetUtil.h" +#include "nsString.h" +#include "nsTArray.h" +#include "nsTHashSet.h" + +// XXX Includes that are only required by implementations which could be moved +// to the cpp file. +#include "base/string_util.h" // for StringPrintf +#include "mozilla/ArrayUtils.h" // for ArrayLength +#include "mozilla/CheckedInt.h" + +#ifdef _MSC_VER +# pragma warning(disable : 4800) +#endif + +namespace mozilla { +template +class Variant; + +namespace detail { +template +struct VariantTag; +} +} // namespace mozilla + +namespace mozilla::dom { +template +class Optional; +} + +class nsAtom; + +namespace IPC { + +template +struct ParamTraits> { + typedef nsTSubstring paramType; + + static void Write(MessageWriter* aWriter, const paramType& aParam) { + bool isVoid = aParam.IsVoid(); + aWriter->WriteBool(isVoid); + + if (isVoid) { + // represents a nullptr pointer + return; + } + + WriteSequenceParam(aWriter, aParam.BeginReading(), + aParam.Length()); + } + + static bool Read(MessageReader* aReader, paramType* aResult) { + bool isVoid; + if (!aReader->ReadBool(&isVoid)) { + return false; + } + + if (isVoid) { + aResult->SetIsVoid(true); + return true; + } + + return ReadSequenceParam(aReader, [&](uint32_t aLength) -> T* { + T* data = nullptr; + aResult->GetMutableData(&data, aLength); + return data; + }); + } +}; + +template +struct ParamTraits> : ParamTraits> {}; + +template +struct ParamTraits> : ParamTraits> {}; + +template +struct ParamTraits> : ParamTraits> {}; + +template +struct ParamTraits> : ParamTraits> {}; + +// XXX While this has no special dependencies, it's currently only used in +// GfxMessageUtils and could be moved there, or generalized to potentially work +// with any nsTHashSet. +template <> +struct ParamTraits> { + typedef nsTHashSet paramType; + + static void Write(MessageWriter* aWriter, const paramType& aParam) { + uint32_t count = aParam.Count(); + WriteParam(aWriter, count); + for (const auto& key : aParam) { + WriteParam(aWriter, key); + } + } + + static bool Read(MessageReader* aReader, paramType* aResult) { + uint32_t count; + if (!ReadParam(aReader, &count)) { + return false; + } + paramType table(count); + for (uint32_t i = 0; i < count; ++i) { + uint64_t key; + if (!ReadParam(aReader, &key)) { + return false; + } + table.Insert(key); + } + *aResult = std::move(table); + return true; + } +}; + +template +struct ParamTraits> { + typedef nsTArray paramType; + + static void Write(MessageWriter* aWriter, const paramType& aParam) { + WriteSequenceParam(aWriter, aParam.Elements(), aParam.Length()); + } + + static void Write(MessageWriter* aWriter, paramType&& aParam) { + WriteSequenceParam(aWriter, aParam.Elements(), aParam.Length()); + } + + static bool Read(MessageReader* aReader, paramType* aResult) { + return ReadSequenceParam(aReader, [&](uint32_t aLength) { + if constexpr (std::is_trivially_default_constructible_v) { + return aResult->AppendElements(aLength); + } else { + aResult->SetCapacity(aLength); + return mozilla::Some(MakeBackInserter(*aResult)); + } + }); + } +}; + +template +struct ParamTraits> : ParamTraits> {}; + +template +struct ParamTraits> { + typedef FallibleTArray paramType; + + static void Write(MessageWriter* aWriter, const paramType& aParam) { + WriteSequenceParam(aWriter, aParam.Elements(), aParam.Length()); + } + + static void Write(MessageWriter* aWriter, paramType&& aParam) { + WriteSequenceParam(aWriter, aParam.Elements(), aParam.Length()); + } + + static bool Read(MessageReader* aReader, paramType* aResult) { + return ReadSequenceParam(aReader, [&](uint32_t aLength) { + if constexpr (std::is_trivially_default_constructible_v) { + return aResult->AppendElements(aLength, mozilla::fallible); + } else { + if (!aResult->SetCapacity(aLength, mozilla::fallible)) { + return mozilla::Maybe{}; + } + return mozilla::Some(BackInserter{.mArray = aResult}); + } + }); + } + + private: + struct BackInserter { + using iterator_category = std::output_iterator_tag; + using value_type = void; + using difference_type = void; + using pointer = void; + using reference = void; + + struct Proxy { + paramType& mArray; + + template + void operator=(U&& aValue) { + // This won't fail because we've reserved capacity earlier. + MOZ_ALWAYS_TRUE(mArray.AppendElement(aValue, mozilla::fallible)); + } + }; + Proxy operator*() { return Proxy{.mArray = *mArray}; } + + BackInserter& operator++() { return *this; } + BackInserter& operator++(int) { return *this; } + + paramType* mArray = nullptr; + }; +}; + +template +struct ParamTraits> : ParamTraits> { + typedef AutoTArray paramType; +}; + +template +struct ParamTraits> : ParamTraits> {}; + +template +struct ParamTraits> : ParamTraits> { +}; + +template +struct ParamTraits> { + typedef mozilla::Vector paramType; + + static void Write(MessageWriter* aWriter, const paramType& aParam) { + WriteSequenceParam(aWriter, aParam.Elements(), aParam.Length()); + } + + static void Write(MessageWriter* aWriter, paramType&& aParam) { + WriteSequenceParam(aWriter, aParam.Elements(), aParam.Length()); + } + + static bool Read(MessageReader* aReader, paramType* aResult) { + return ReadSequenceParam(aReader, [&](uint32_t aLength) -> E* { + if (!aResult->resize(aLength)) { + // So that OOM failure shows up as OOM crash instead of IPC FatalError. + NS_ABORT_OOM(aLength * sizeof(E)); + } + return aResult->begin(); + }); + } +}; + +template +struct ParamTraits> { + typedef std::vector paramType; + + static void Write(MessageWriter* aWriter, const paramType& aParam) { + WriteSequenceParam(aWriter, aParam.data(), aParam.size()); + } + static void Write(MessageWriter* aWriter, paramType&& aParam) { + WriteSequenceParam(aWriter, aParam.data(), aParam.size()); + } + + static bool Read(MessageReader* aReader, paramType* aResult) { + return ReadSequenceParam(aReader, [&](uint32_t aLength) { + if constexpr (std::is_trivially_default_constructible_v) { + aResult->resize(aLength); + return aResult->data(); + } else { + aResult->reserve(aLength); + return mozilla::Some(std::back_inserter(*aResult)); + } + }); + } +}; + +template +struct ParamTraits> final { + using T = std::unordered_map; + + static void Write(MessageWriter* const writer, const T& in) { + WriteParam(writer, in.size()); + for (const auto& pair : in) { + WriteParam(writer, pair.first); + WriteParam(writer, pair.second); + } + } + + static bool Read(MessageReader* const reader, T* const out) { + size_t size = 0; + if (!ReadParam(reader, &size)) return false; + T map; + map.reserve(size); + for (const auto i : mozilla::IntegerRange(size)) { + std::pair pair; + mozilla::Unused << i; + if (!ReadParam(reader, &(pair.first)) || + !ReadParam(reader, &(pair.second))) { + return false; + } + map.insert(std::move(pair)); + } + *out = std::move(map); + return true; + } +}; + +template <> +struct ParamTraits { + typedef float paramType; + + static void Write(MessageWriter* aWriter, const paramType& aParam) { + aWriter->WriteBytes(&aParam, sizeof(paramType)); + } + + static bool Read(MessageReader* aReader, paramType* aResult) { + return aReader->ReadBytesInto(aResult, sizeof(*aResult)); + } +}; + +template <> +struct ParamTraits + : public ContiguousEnumSerializer {}; + +template <> +struct ParamTraits { + typedef nsID paramType; + + static void Write(MessageWriter* aWriter, const paramType& aParam) { + WriteParam(aWriter, aParam.m0); + WriteParam(aWriter, aParam.m1); + WriteParam(aWriter, aParam.m2); + for (unsigned int i = 0; i < mozilla::ArrayLength(aParam.m3); i++) { + WriteParam(aWriter, aParam.m3[i]); + } + } + + static bool Read(MessageReader* aReader, paramType* aResult) { + if (!ReadParam(aReader, &(aResult->m0)) || + !ReadParam(aReader, &(aResult->m1)) || + !ReadParam(aReader, &(aResult->m2))) + return false; + + for (unsigned int i = 0; i < mozilla::ArrayLength(aResult->m3); i++) + if (!ReadParam(aReader, &(aResult->m3[i]))) return false; + + return true; + } +}; + +template <> +struct ParamTraits + : public ContiguousEnumSerializer {}; + +template <> +struct ParamTraits { + typedef mozilla::TimeDuration paramType; + static void Write(MessageWriter* aWriter, const paramType& aParam) { + WriteParam(aWriter, aParam.mValue); + } + static bool Read(MessageReader* aReader, paramType* aResult) { + return ReadParam(aReader, &aResult->mValue); + }; +}; + +template <> +struct ParamTraits { + typedef mozilla::TimeStamp paramType; + static void Write(MessageWriter* aWriter, const paramType& aParam) { + WriteParam(aWriter, aParam.mValue); + } + static bool Read(MessageReader* aReader, paramType* aResult) { + return ReadParam(aReader, &aResult->mValue); + }; +}; + +#ifdef XP_WIN + +template <> +struct ParamTraits { + typedef mozilla::TimeStampValue paramType; + static void Write(MessageWriter* aWriter, const paramType& aParam) { + WriteParam(aWriter, aParam.mGTC); + WriteParam(aWriter, aParam.mQPC); + WriteParam(aWriter, aParam.mIsNull); + WriteParam(aWriter, aParam.mHasQPC); + } + static bool Read(MessageReader* aReader, paramType* aResult) { + return (ReadParam(aReader, &aResult->mGTC) && + ReadParam(aReader, &aResult->mQPC) && + ReadParam(aReader, &aResult->mIsNull) && + ReadParam(aReader, &aResult->mHasQPC)); + } +}; + +#endif + +template <> +struct ParamTraits { + typedef mozilla::dom::ipc::StructuredCloneData paramType; + + static void Write(MessageWriter* aWriter, const paramType& aParam) { + aParam.WriteIPCParams(aWriter); + } + + static bool Read(MessageReader* aReader, paramType* aResult) { + return aResult->ReadIPCParams(aReader); + } +}; + +template +struct ParamTraits> { + typedef mozilla::Maybe paramType; + + static void Write(MessageWriter* writer, const paramType& param) { + if (param.isSome()) { + WriteParam(writer, true); + WriteParam(writer, param.ref()); + } else { + WriteParam(writer, false); + } + } + + static void Write(MessageWriter* writer, paramType&& param) { + if (param.isSome()) { + WriteParam(writer, true); + WriteParam(writer, std::move(param.ref())); + } else { + WriteParam(writer, false); + } + } + + static bool Read(MessageReader* reader, paramType* result) { + bool isSome; + if (!ReadParam(reader, &isSome)) { + return false; + } + if (isSome) { + mozilla::Maybe tmp = ReadParam(reader).TakeMaybe(); + if (!tmp) { + return false; + } + *result = std::move(tmp); + } else { + *result = mozilla::Nothing(); + } + return true; + } +}; + +template +struct ParamTraits> { + typedef mozilla::EnumSet paramType; + typedef U serializedType; + + static void Write(MessageWriter* writer, const paramType& param) { + MOZ_RELEASE_ASSERT(IsLegalValue(param.serialize())); + WriteParam(writer, param.serialize()); + } + + static bool Read(MessageReader* reader, paramType* result) { + serializedType tmp; + + if (ReadParam(reader, &tmp)) { + if (IsLegalValue(tmp)) { + result->deserialize(tmp); + return true; + } + } + + return false; + } + + static constexpr serializedType AllEnumBits() { + return ~serializedType(0) >> (std::numeric_limits::digits - + (mozilla::MaxEnumValue::value + 1)); + } + + static constexpr bool IsLegalValue(const serializedType value) { + static_assert(mozilla::MaxEnumValue::value < + std::numeric_limits::digits, + "Enum max value is not in the range!"); + static_assert( + std::is_unsigned::value)>::value, + "Type of MaxEnumValue::value specialization should be unsigned!"); + + return (value & AllEnumBits()) == value; + } +}; + +template +struct ParamTraits> { + typedef mozilla::Variant paramType; + using Tag = typename mozilla::detail::VariantTag::Type; + + static void Write(MessageWriter* writer, const paramType& param) { + WriteParam(writer, param.tag); + param.match([writer](const auto& t) { WriteParam(writer, t); }); + } + + // Because VariantReader is a nested struct, we need the dummy template + // parameter to avoid making VariantReader<0> an explicit specialization, + // which is not allowed for a nested class template + template + struct VariantReader { + using Next = VariantReader; + + static bool Read(MessageReader* reader, Tag tag, paramType* result) { + // Since the VariantReader specializations start at N , we need to + // subtract one to look at N - 1, the first valid tag. This means our + // comparisons are off by 1. If we get to N = 0 then we have failed to + // find a match to the tag. + if (tag == N - 1) { + // Recall, even though the template parameter is N, we are + // actually interested in the N - 1 tag. + // Default construct our field within the result outparameter and + // directly deserialize into the variant. Note that this means that + // every type in Ts needs to be default constructible + return ReadParam(reader, &result->template emplace()); + } else { + return Next::Read(reader, tag, result); + } + } + + }; // VariantReader + + // Since we are conditioning on tag = N - 1 in the preceding specialization, + // if we get to `VariantReader<0, dummy>` we have failed to find + // a matching tag. + template + struct VariantReader<0, dummy> { + static bool Read(MessageReader* reader, Tag tag, paramType* result) { + return false; + } + }; + + static bool Read(MessageReader* reader, paramType* result) { + Tag tag; + if (ReadParam(reader, &tag)) { + return VariantReader::Read(reader, tag, result); + } + return false; + } +}; + +template +struct ParamTraits> { + typedef mozilla::dom::Optional paramType; + + static void Write(MessageWriter* aWriter, const paramType& aParam) { + if (aParam.WasPassed()) { + WriteParam(aWriter, true); + WriteParam(aWriter, aParam.Value()); + return; + } + + WriteParam(aWriter, false); + } + + static bool Read(MessageReader* aReader, paramType* aResult) { + bool wasPassed = false; + + if (!ReadParam(aReader, &wasPassed)) { + return false; + } + + aResult->Reset(); + + if (wasPassed) { + if (!ReadParam(aReader, &aResult->Construct())) { + return false; + } + } + + return true; + } +}; + +template <> +struct ParamTraits { + typedef nsAtom paramType; + + static void Write(MessageWriter* aWriter, const paramType* aParam); + static bool Read(MessageReader* aReader, RefPtr* aResult); +}; + +struct CrossOriginOpenerPolicyValidator { + using IntegralType = + std::underlying_type_t; + + static bool IsLegalValue(const IntegralType e) { + return AreIntegralValuesEqual(e, nsILoadInfo::OPENER_POLICY_UNSAFE_NONE) || + AreIntegralValuesEqual(e, nsILoadInfo::OPENER_POLICY_SAME_ORIGIN) || + AreIntegralValuesEqual( + e, nsILoadInfo::OPENER_POLICY_SAME_ORIGIN_ALLOW_POPUPS) || + AreIntegralValuesEqual( + e, nsILoadInfo:: + OPENER_POLICY_SAME_ORIGIN_EMBEDDER_POLICY_REQUIRE_CORP); + } + + private: + static bool AreIntegralValuesEqual( + const IntegralType aLhs, + const nsILoadInfo::CrossOriginOpenerPolicy aRhs) { + return aLhs == static_cast(aRhs); + } +}; + +template <> +struct ParamTraits + : EnumSerializer {}; + +struct CrossOriginEmbedderPolicyValidator { + using IntegralType = + std::underlying_type_t; + + static bool IsLegalValue(const IntegralType e) { + return AreIntegralValuesEqual(e, nsILoadInfo::EMBEDDER_POLICY_NULL) || + AreIntegralValuesEqual(e, + nsILoadInfo::EMBEDDER_POLICY_REQUIRE_CORP) || + AreIntegralValuesEqual(e, + nsILoadInfo::EMBEDDER_POLICY_CREDENTIALLESS); + } + + private: + static bool AreIntegralValuesEqual( + const IntegralType aLhs, + const nsILoadInfo::CrossOriginEmbedderPolicy aRhs) { + return aLhs == static_cast(aRhs); + } +}; + +template <> +struct ParamTraits + : EnumSerializer {}; + +template +struct ParamTraits> { + typedef mozilla::BitSet paramType; + + static void Write(MessageWriter* aWriter, const paramType& aParam) { + for (Word word : aParam.Storage()) { + WriteParam(aWriter, word); + } + } + + static bool Read(MessageReader* aReader, paramType* aResult) { + for (Word& word : aResult->Storage()) { + if (!ReadParam(aReader, &word)) { + return false; + } + } + return true; + } +}; + +template +struct ParamTraits> { + typedef mozilla::UniquePtr paramType; + + static void Write(MessageWriter* aWriter, const paramType& aParam) { + bool isNull = aParam == nullptr; + WriteParam(aWriter, isNull); + + if (!isNull) { + WriteParam(aWriter, *aParam.get()); + } + } + + static bool Read(IPC::MessageReader* aReader, paramType* aResult) { + bool isNull = true; + if (!ReadParam(aReader, &isNull)) { + return false; + } + + if (isNull) { + aResult->reset(); + } else { + *aResult = mozilla::MakeUnique(); + if (!ReadParam(aReader, aResult->get())) { + return false; + } + } + return true; + } +}; + +template +struct ParamTraits> { + typedef std::tuple paramType; + + template + static void Write(IPC::MessageWriter* aWriter, U&& aParam) { + WriteInternal(aWriter, std::forward(aParam), + std::index_sequence_for{}); + } + + static bool Read(IPC::MessageReader* aReader, std::tuple* aResult) { + return ReadInternal(aReader, *aResult, std::index_sequence_for{}); + } + + private: + template + static void WriteInternal(IPC::MessageWriter* aWriter, + const std::tuple& aParam, + std::index_sequence) { + WriteParams(aWriter, std::get(aParam)...); + } + + template + static void WriteInternal(IPC::MessageWriter* aWriter, + std::tuple&& aParam, + std::index_sequence) { + WriteParams(aWriter, std::move(std::get(aParam))...); + } + + template + static bool ReadInternal(IPC::MessageReader* aReader, + std::tuple& aResult, + std::index_sequence) { + return ReadParams(aReader, std::get(aResult)...); + } +}; + +template <> +struct ParamTraits { + typedef mozilla::net::LinkHeader paramType; + static void Write(MessageWriter* aWriter, const paramType& aParam) { + WriteParam(aWriter, aParam.mHref); + WriteParam(aWriter, aParam.mRel); + WriteParam(aWriter, aParam.mTitle); + WriteParam(aWriter, aParam.mIntegrity); + WriteParam(aWriter, aParam.mSrcset); + WriteParam(aWriter, aParam.mSizes); + WriteParam(aWriter, aParam.mType); + WriteParam(aWriter, aParam.mMedia); + WriteParam(aWriter, aParam.mCrossOrigin); + WriteParam(aWriter, aParam.mReferrerPolicy); + WriteParam(aWriter, aParam.mAs); + } + static bool Read(MessageReader* aReader, paramType* aResult) { + if (!ReadParam(aReader, &aResult->mHref)) { + return false; + } + if (!ReadParam(aReader, &aResult->mRel)) { + return false; + } + if (!ReadParam(aReader, &aResult->mTitle)) { + return false; + } + if (!ReadParam(aReader, &aResult->mIntegrity)) { + return false; + } + if (!ReadParam(aReader, &aResult->mSrcset)) { + return false; + } + if (!ReadParam(aReader, &aResult->mSizes)) { + return false; + } + if (!ReadParam(aReader, &aResult->mType)) { + return false; + } + if (!ReadParam(aReader, &aResult->mMedia)) { + return false; + } + if (!ReadParam(aReader, &aResult->mCrossOrigin)) { + return false; + } + if (!ReadParam(aReader, &aResult->mReferrerPolicy)) { + return false; + } + return ReadParam(aReader, &aResult->mAs); + }; +}; + +} /* namespace IPC */ + +#endif /* __IPC_GLUE_IPCMESSAGEUTILSSPECIALIZATIONS_H__ */ -- cgit v1.2.3