Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 361 insertions, 0 deletions

diff --git a/dom/fetch/InternalResponse.cpp b/dom/fetch/InternalResponse.cpp
new file mode 100644
index 0000000000..342a88eeeb
--- /dev/null
+++ b/dom/fetch/InternalResponse.cpp
@@ -0,0 +1,361 @@
+/* -*- 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/. */
+
+#include "InternalResponse.h"
+
+#include "mozilla/Assertions.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/dom/FetchTypes.h"
+#include "mozilla/dom/InternalHeaders.h"
+#include "mozilla/dom/cache/CacheTypes.h"
+#include "mozilla/ipc/PBackgroundSharedTypes.h"
+#include "mozilla/ipc/IPCStreamUtils.h"
+#include "mozilla/RandomNum.h"
+#include "mozilla/RemoteLazyInputStreamStorage.h"
+#include "nsIRandomGenerator.h"
+#include "nsStreamUtils.h"
+
+namespace mozilla::dom {
+
+namespace {
+
+// Const variable for generate padding size
+// XXX This will be tweaked to something more meaningful in Bug 1383656.
+const uint32_t kMaxRandomNumber = 102400;
+
+nsCOMPtr<nsIInputStream> TakeStreamFromStorage(
+    const BodyStreamVariant& aVariant, int64_t aBodySize) {
+  MOZ_ASSERT(aVariant.type() == BodyStreamVariant::TParentToParentStream);
+  const auto& uuid = aVariant.get_ParentToParentStream().uuid();
+
+  auto storageOrErr = RemoteLazyInputStreamStorage::Get();
+  MOZ_ASSERT(storageOrErr.isOk());
+  auto storage = storageOrErr.unwrap();
+  auto stream = storage->ForgetStream(uuid);
+  MOZ_ASSERT(stream);
+
+  return stream;
+}
+
+}  // namespace
+
+InternalResponse::InternalResponse(uint16_t aStatus,
+                                   const nsACString& aStatusText,
+                                   RequestCredentials aCredentialsMode)
+    : mType(ResponseType::Default),
+      mStatus(aStatus),
+      mStatusText(aStatusText),
+      mHeaders(new InternalHeaders(HeadersGuardEnum::Response)),
+      mBodySize(UNKNOWN_BODY_SIZE),
+      mPaddingSize(UNKNOWN_PADDING_SIZE),
+      mErrorCode(NS_OK),
+      mCredentialsMode(aCredentialsMode) {}
+
+/* static */ RefPtr<InternalResponse> InternalResponse::FromIPC(
+    const IPCInternalResponse& aIPCResponse) {
+  if (aIPCResponse.type() == ResponseType::Error) {
+    return InternalResponse::NetworkError(aIPCResponse.errorCode());
+  }
+
+  RefPtr<InternalResponse> response =
+      new InternalResponse(aIPCResponse.status(), aIPCResponse.statusText());
+
+  response->SetURLList(aIPCResponse.urlList());
+  response->mHeaders =
+      new InternalHeaders(aIPCResponse.headers(), aIPCResponse.headersGuard());
+
+  if (aIPCResponse.body()) {
+    auto bodySize = aIPCResponse.bodySize();
+    nsCOMPtr<nsIInputStream> body =
+        TakeStreamFromStorage(*aIPCResponse.body(), bodySize);
+    response->SetBody(body, bodySize);
+  }
+
+  response->SetAlternativeDataType(aIPCResponse.alternativeDataType());
+
+  if (aIPCResponse.alternativeBody()) {
+    nsCOMPtr<nsIInputStream> alternativeBody = TakeStreamFromStorage(
+        *aIPCResponse.alternativeBody(), UNKNOWN_BODY_SIZE);
+    response->SetAlternativeBody(alternativeBody);
+  }
+
+  response->InitChannelInfo(aIPCResponse.channelInfo());
+
+  if (aIPCResponse.principalInfo()) {
+    response->SetPrincipalInfo(MakeUnique<mozilla::ipc::PrincipalInfo>(
+        aIPCResponse.principalInfo().ref()));
+  }
+
+  switch (aIPCResponse.type()) {
+    case ResponseType::Basic:
+      response = response->BasicResponse();
+      break;
+    case ResponseType::Cors:
+      response = response->CORSResponse();
+      break;
+    case ResponseType::Default:
+      break;
+    case ResponseType::Opaque:
+      response = response->OpaqueResponse();
+      break;
+    case ResponseType::Opaqueredirect:
+      response = response->OpaqueRedirectResponse();
+      break;
+    default:
+      MOZ_CRASH("Unexpected ResponseType!");
+  }
+
+  MOZ_ASSERT(response);
+
+  return response;
+}
+
+InternalResponse::~InternalResponse() = default;
+
+void InternalResponse::ToIPC(
+    IPCInternalResponse* aIPCResponse, mozilla::ipc::PBackgroundChild* aManager,
+    UniquePtr<mozilla::ipc::AutoIPCStream>& aAutoBodyStream,
+    UniquePtr<mozilla::ipc::AutoIPCStream>& aAutoAlternativeBodyStream) {
+  nsTArray<HeadersEntry> headers;
+  HeadersGuardEnum headersGuard;
+  UnfilteredHeaders()->ToIPC(headers, headersGuard);
+
+  Maybe<mozilla::ipc::PrincipalInfo> principalInfo =
+      mPrincipalInfo ? Some(*mPrincipalInfo) : Nothing();
+
+  // Note: all the arguments are copied rather than moved, which would be more
+  // efficient, because there's no move-friendly constructor generated.
+  *aIPCResponse =
+      IPCInternalResponse(mType, GetUnfilteredURLList(), GetUnfilteredStatus(),
+                          GetUnfilteredStatusText(), headersGuard, headers,
+                          Nothing(), static_cast<uint64_t>(UNKNOWN_BODY_SIZE),
+                          mErrorCode, GetAlternativeDataType(), Nothing(),
+                          mChannelInfo.AsIPCChannelInfo(), principalInfo);
+
+  nsCOMPtr<nsIInputStream> body;
+  int64_t bodySize;
+  GetUnfilteredBody(getter_AddRefs(body), &bodySize);
+
+  if (body) {
+    aIPCResponse->body().emplace(ChildToParentStream());
+    aIPCResponse->bodySize() = bodySize;
+
+    aAutoBodyStream.reset(new mozilla::ipc::AutoIPCStream(
+        aIPCResponse->body()->get_ChildToParentStream().stream()));
+    DebugOnly<bool> ok = aAutoBodyStream->Serialize(body, aManager);
+    MOZ_ASSERT(ok);
+  }
+
+  nsCOMPtr<nsIInputStream> alternativeBody = TakeAlternativeBody();
+  if (alternativeBody) {
+    aIPCResponse->alternativeBody().emplace(ChildToParentStream());
+
+    aAutoAlternativeBodyStream.reset(new mozilla::ipc::AutoIPCStream(
+        aIPCResponse->alternativeBody()->get_ChildToParentStream().stream()));
+    DebugOnly<bool> ok =
+        aAutoAlternativeBodyStream->Serialize(alternativeBody, aManager);
+    MOZ_ASSERT(ok);
+  }
+}
+
+already_AddRefed<InternalResponse> InternalResponse::Clone(
+    CloneType aCloneType) {
+  RefPtr<InternalResponse> clone = CreateIncompleteCopy();
+
+  clone->mHeaders = new InternalHeaders(*mHeaders);
+
+  // Make sure the clone response will have the same padding size.
+  clone->mPaddingInfo = mPaddingInfo;
+  clone->mPaddingSize = mPaddingSize;
+
+  clone->mCacheInfoChannel = mCacheInfoChannel;
+
+  if (mWrappedResponse) {
+    clone->mWrappedResponse = mWrappedResponse->Clone(aCloneType);
+    MOZ_ASSERT(!mBody);
+    return clone.forget();
+  }
+
+  if (!mBody || aCloneType == eDontCloneInputStream) {
+    return clone.forget();
+  }
+
+  nsCOMPtr<nsIInputStream> clonedBody;
+  nsCOMPtr<nsIInputStream> replacementBody;
+
+  nsresult rv = NS_CloneInputStream(mBody, getter_AddRefs(clonedBody),
+                                    getter_AddRefs(replacementBody));
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return nullptr;
+  }
+
+  clone->mBody.swap(clonedBody);
+  if (replacementBody) {
+    mBody.swap(replacementBody);
+  }
+
+  return clone.forget();
+}
+
+already_AddRefed<InternalResponse> InternalResponse::BasicResponse() {
+  MOZ_ASSERT(!mWrappedResponse,
+             "Can't BasicResponse a already wrapped response");
+  RefPtr<InternalResponse> basic = CreateIncompleteCopy();
+  basic->mType = ResponseType::Basic;
+  basic->mHeaders = InternalHeaders::BasicHeaders(Headers());
+  basic->mWrappedResponse = this;
+  return basic.forget();
+}
+
+already_AddRefed<InternalResponse> InternalResponse::CORSResponse() {
+  MOZ_ASSERT(!mWrappedResponse,
+             "Can't CORSResponse a already wrapped response");
+  RefPtr<InternalResponse> cors = CreateIncompleteCopy();
+  cors->mType = ResponseType::Cors;
+  cors->mHeaders = InternalHeaders::CORSHeaders(Headers(), mCredentialsMode);
+  cors->mWrappedResponse = this;
+  return cors.forget();
+}
+
+uint32_t InternalResponse::GetPaddingInfo() {
+  // If it's an opaque response, the paddingInfo should be generated only when
+  // paddingSize is unknown size.
+  // If it's not, the paddingInfo should be nothing and the paddingSize should
+  // be unknown size.
+  MOZ_DIAGNOSTIC_ASSERT(
+      (mType == ResponseType::Opaque && mPaddingSize == UNKNOWN_PADDING_SIZE &&
+       mPaddingInfo.isSome()) ||
+      (mType == ResponseType::Opaque && mPaddingSize != UNKNOWN_PADDING_SIZE &&
+       mPaddingInfo.isNothing()) ||
+      (mType != ResponseType::Opaque && mPaddingSize == UNKNOWN_PADDING_SIZE &&
+       mPaddingInfo.isNothing()));
+  return mPaddingInfo.isSome() ? mPaddingInfo.ref() : 0;
+}
+
+nsresult InternalResponse::GeneratePaddingInfo() {
+  MOZ_DIAGNOSTIC_ASSERT(mType == ResponseType::Opaque);
+  MOZ_DIAGNOSTIC_ASSERT(mPaddingSize == UNKNOWN_PADDING_SIZE);
+
+  // Utilize random generator to generator a random number
+  nsresult rv;
+  uint32_t randomNumber = 0;
+  nsCOMPtr<nsIRandomGenerator> randomGenerator =
+      do_GetService("@mozilla.org/security/random-generator;1", &rv);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    Maybe<uint64_t> maybeRandomNum = RandomUint64();
+    if (maybeRandomNum.isSome()) {
+      mPaddingInfo.emplace(uint32_t(maybeRandomNum.value() % kMaxRandomNumber));
+      return NS_OK;
+    }
+    return rv;
+  }
+
+  MOZ_DIAGNOSTIC_ASSERT(randomGenerator);
+
+  uint8_t* buffer;
+  rv = randomGenerator->GenerateRandomBytes(sizeof(randomNumber), &buffer);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    Maybe<uint64_t> maybeRandomNum = RandomUint64();
+    if (maybeRandomNum.isSome()) {
+      mPaddingInfo.emplace(uint32_t(maybeRandomNum.value() % kMaxRandomNumber));
+      return NS_OK;
+    }
+    return rv;
+  }
+
+  memcpy(&randomNumber, buffer, sizeof(randomNumber));
+  free(buffer);
+
+  mPaddingInfo.emplace(randomNumber % kMaxRandomNumber);
+
+  return rv;
+}
+
+int64_t InternalResponse::GetPaddingSize() {
+  // We initialize padding size to an unknown size (-1). After cached, we only
+  // pad opaque response. Opaque response's padding size might be unknown before
+  // cached.
+  MOZ_DIAGNOSTIC_ASSERT(mType == ResponseType::Opaque ||
+                        mPaddingSize == UNKNOWN_PADDING_SIZE);
+  MOZ_DIAGNOSTIC_ASSERT(mPaddingSize == UNKNOWN_PADDING_SIZE ||
+                        mPaddingSize >= 0);
+
+  return mPaddingSize;
+}
+
+void InternalResponse::SetPaddingSize(int64_t aPaddingSize) {
+  // We should only pad the opaque response.
+  MOZ_DIAGNOSTIC_ASSERT(
+      (mType == ResponseType::Opaque) !=
+      (aPaddingSize == InternalResponse::UNKNOWN_PADDING_SIZE));
+  MOZ_DIAGNOSTIC_ASSERT(aPaddingSize == UNKNOWN_PADDING_SIZE ||
+                        aPaddingSize >= 0);
+
+  mPaddingSize = aPaddingSize;
+}
+
+void InternalResponse::SetPrincipalInfo(
+    UniquePtr<mozilla::ipc::PrincipalInfo> aPrincipalInfo) {
+  mPrincipalInfo = std::move(aPrincipalInfo);
+}
+
+LoadTainting InternalResponse::GetTainting() const {
+  switch (mType) {
+    case ResponseType::Cors:
+      return LoadTainting::CORS;
+    case ResponseType::Opaque:
+      return LoadTainting::Opaque;
+    default:
+      return LoadTainting::Basic;
+  }
+}
+
+already_AddRefed<InternalResponse> InternalResponse::Unfiltered() {
+  RefPtr<InternalResponse> ref = mWrappedResponse;
+  if (!ref) {
+    ref = this;
+  }
+  return ref.forget();
+}
+
+already_AddRefed<InternalResponse> InternalResponse::OpaqueResponse() {
+  MOZ_ASSERT(!mWrappedResponse,
+             "Can't OpaqueResponse a already wrapped response");
+  RefPtr<InternalResponse> response = new InternalResponse(0, ""_ns);
+  response->mType = ResponseType::Opaque;
+  response->mChannelInfo = mChannelInfo;
+  if (mPrincipalInfo) {
+    response->mPrincipalInfo =
+        MakeUnique<mozilla::ipc::PrincipalInfo>(*mPrincipalInfo);
+  }
+  response->mWrappedResponse = this;
+  return response.forget();
+}
+
+already_AddRefed<InternalResponse> InternalResponse::OpaqueRedirectResponse() {
+  MOZ_ASSERT(!mWrappedResponse,
+             "Can't OpaqueRedirectResponse a already wrapped response");
+  MOZ_ASSERT(!mURLList.IsEmpty(),
+             "URLList should not be emtpy for internalResponse");
+  RefPtr<InternalResponse> response = OpaqueResponse();
+  response->mType = ResponseType::Opaqueredirect;
+  response->mURLList = mURLList.Clone();
+  return response.forget();
+}
+
+already_AddRefed<InternalResponse> InternalResponse::CreateIncompleteCopy() {
+  RefPtr<InternalResponse> copy = new InternalResponse(mStatus, mStatusText);
+  copy->mType = mType;
+  copy->mURLList = mURLList.Clone();
+  copy->mChannelInfo = mChannelInfo;
+  if (mPrincipalInfo) {
+    copy->mPrincipalInfo =
+        MakeUnique<mozilla::ipc::PrincipalInfo>(*mPrincipalInfo);
+  }
+  return copy.forget();
+}
+
+}  // namespace mozilla::dom