Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

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

1 files changed, 338 insertions, 0 deletions

diff --git a/dom/file/MultipartBlobImpl.cpp b/dom/file/MultipartBlobImpl.cpp
new file mode 100644
index 0000000000..b795793aef
--- /dev/null
+++ b/dom/file/MultipartBlobImpl.cpp
@@ -0,0 +1,338 @@
+/* -*- 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 "MultipartBlobImpl.h"
+#include "jsfriendapi.h"
+#include "mozilla/dom/BlobSet.h"
+#include "mozilla/dom/FileBinding.h"
+#include "mozilla/dom/UnionTypes.h"
+#include "nsComponentManagerUtils.h"
+#include "nsIGlobalObject.h"
+#include "nsIMultiplexInputStream.h"
+#include "nsReadableUtils.h"
+#include "nsRFPService.h"
+#include "nsStringStream.h"
+#include "nsTArray.h"
+#include "nsJSUtils.h"
+#include "nsContentUtils.h"
+#include <algorithm>
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+/* static */
+already_AddRefed<MultipartBlobImpl> MultipartBlobImpl::Create(
+    nsTArray<RefPtr<BlobImpl>>&& aBlobImpls, const nsAString& aName,
+    const nsAString& aContentType, RTPCallerType aRTPCallerType,
+    ErrorResult& aRv) {
+  RefPtr<MultipartBlobImpl> blobImpl =
+      new MultipartBlobImpl(std::move(aBlobImpls), aName, aContentType);
+  blobImpl->SetLengthAndModifiedDate(Some(aRTPCallerType), aRv);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return nullptr;
+  }
+
+  return blobImpl.forget();
+}
+
+/* static */
+already_AddRefed<MultipartBlobImpl> MultipartBlobImpl::Create(
+    nsTArray<RefPtr<BlobImpl>>&& aBlobImpls, const nsAString& aContentType,
+    ErrorResult& aRv) {
+  RefPtr<MultipartBlobImpl> blobImpl =
+      new MultipartBlobImpl(std::move(aBlobImpls), aContentType);
+  blobImpl->SetLengthAndModifiedDate(/* aRTPCallerType */ Nothing(), aRv);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return nullptr;
+  }
+
+  return blobImpl.forget();
+}
+
+void MultipartBlobImpl::CreateInputStream(nsIInputStream** aStream,
+                                          ErrorResult& aRv) const {
+  *aStream = nullptr;
+
+  uint32_t length = mBlobImpls.Length();
+  if (length == 0 || mLength == 0) {
+    aRv = NS_NewCStringInputStream(aStream, ""_ns);
+    return;
+  }
+
+  if (length == 1) {
+    BlobImpl* blobImpl = mBlobImpls.ElementAt(0);
+    blobImpl->CreateInputStream(aStream, aRv);
+    return;
+  }
+
+  nsCOMPtr<nsIMultiplexInputStream> stream =
+      do_CreateInstance("@mozilla.org/io/multiplex-input-stream;1");
+  if (NS_WARN_IF(!stream)) {
+    aRv.Throw(NS_ERROR_FAILURE);
+    return;
+  }
+
+  uint32_t i;
+  for (i = 0; i < length; i++) {
+    nsCOMPtr<nsIInputStream> scratchStream;
+    BlobImpl* blobImpl = mBlobImpls.ElementAt(i).get();
+
+    // nsIMultiplexInputStream doesn't work well with empty sub streams. Let's
+    // skip the empty blobs.
+    uint32_t size = blobImpl->GetSize(aRv);
+    if (NS_WARN_IF(aRv.Failed())) {
+      return;
+    }
+
+    if (size == 0) {
+      continue;
+    }
+
+    blobImpl->CreateInputStream(getter_AddRefs(scratchStream), aRv);
+    if (NS_WARN_IF(aRv.Failed())) {
+      return;
+    }
+
+    aRv = stream->AppendStream(scratchStream);
+    if (NS_WARN_IF(aRv.Failed())) {
+      return;
+    }
+  }
+
+  CallQueryInterface(stream, aStream);
+}
+
+already_AddRefed<BlobImpl> MultipartBlobImpl::CreateSlice(
+    uint64_t aStart, uint64_t aLength, const nsAString& aContentType,
+    ErrorResult& aRv) const {
+  // If we clamped to nothing we create an empty blob
+  nsTArray<RefPtr<BlobImpl>> blobImpls;
+
+  uint64_t length = aLength;
+  uint64_t skipStart = aStart;
+
+  // Prune the list of blobs if we can
+  uint32_t i;
+  for (i = 0; length && skipStart && i < mBlobImpls.Length(); i++) {
+    BlobImpl* blobImpl = mBlobImpls[i].get();
+
+    uint64_t l = blobImpl->GetSize(aRv);
+    if (NS_WARN_IF(aRv.Failed())) {
+      return nullptr;
+    }
+
+    if (skipStart < l) {
+      uint64_t upperBound = std::min<uint64_t>(l - skipStart, length);
+
+      RefPtr<BlobImpl> firstBlobImpl =
+          blobImpl->CreateSlice(skipStart, upperBound, aContentType, aRv);
+      if (NS_WARN_IF(aRv.Failed())) {
+        return nullptr;
+      }
+
+      // Avoid wrapping a single blob inside an MultipartBlobImpl
+      if (length == upperBound) {
+        return firstBlobImpl.forget();
+      }
+
+      blobImpls.AppendElement(firstBlobImpl);
+      length -= upperBound;
+      i++;
+      break;
+    }
+    skipStart -= l;
+  }
+
+  // Now append enough blobs until we're done
+  for (; length && i < mBlobImpls.Length(); i++) {
+    BlobImpl* blobImpl = mBlobImpls[i].get();
+
+    uint64_t l = blobImpl->GetSize(aRv);
+    if (NS_WARN_IF(aRv.Failed())) {
+      return nullptr;
+    }
+
+    if (length < l) {
+      RefPtr<BlobImpl> lastBlobImpl =
+          blobImpl->CreateSlice(0, length, aContentType, aRv);
+      if (NS_WARN_IF(aRv.Failed())) {
+        return nullptr;
+      }
+
+      blobImpls.AppendElement(lastBlobImpl);
+    } else {
+      blobImpls.AppendElement(blobImpl);
+    }
+    length -= std::min<uint64_t>(l, length);
+  }
+
+  // we can create our blob now
+  RefPtr<BlobImpl> impl = Create(std::move(blobImpls), aContentType, aRv);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return nullptr;
+  }
+
+  return impl.forget();
+}
+
+void MultipartBlobImpl::InitializeBlob(RTPCallerType aRTPCallerType,
+                                       ErrorResult& aRv) {
+  SetLengthAndModifiedDate(Some(aRTPCallerType), aRv);
+  NS_WARNING_ASSERTION(!aRv.Failed(), "SetLengthAndModifiedDate failed");
+}
+
+void MultipartBlobImpl::InitializeBlob(const Sequence<Blob::BlobPart>& aData,
+                                       const nsAString& aContentType,
+                                       bool aNativeEOL,
+                                       RTPCallerType aRTPCallerType,
+                                       ErrorResult& aRv) {
+  mContentType = aContentType;
+  BlobSet blobSet;
+
+  for (uint32_t i = 0, len = aData.Length(); i < len; ++i) {
+    const Blob::BlobPart& data = aData[i];
+
+    if (data.IsBlob()) {
+      RefPtr<Blob> blob = data.GetAsBlob().get();
+      aRv = blobSet.AppendBlobImpl(blob->Impl());
+      if (aRv.Failed()) {
+        return;
+      }
+    }
+
+    else if (data.IsUTF8String()) {
+      aRv = blobSet.AppendUTF8String(data.GetAsUTF8String(), aNativeEOL);
+      if (aRv.Failed()) {
+        return;
+      }
+    }
+
+    else if (data.IsArrayBuffer()) {
+      const ArrayBuffer& buffer = data.GetAsArrayBuffer();
+      buffer.ComputeState();
+      aRv = blobSet.AppendVoidPtr(buffer.Data(), buffer.Length());
+      if (aRv.Failed()) {
+        return;
+      }
+    }
+
+    else if (data.IsArrayBufferView()) {
+      const ArrayBufferView& buffer = data.GetAsArrayBufferView();
+      buffer.ComputeState();
+      aRv = blobSet.AppendVoidPtr(buffer.Data(), buffer.Length());
+      if (aRv.Failed()) {
+        return;
+      }
+    }
+
+    else {
+      MOZ_CRASH("Impossible blob data type.");
+    }
+  }
+
+  mBlobImpls = blobSet.GetBlobImpls();
+  SetLengthAndModifiedDate(Some(aRTPCallerType), aRv);
+  NS_WARNING_ASSERTION(!aRv.Failed(), "SetLengthAndModifiedDate failed");
+}
+
+void MultipartBlobImpl::SetLengthAndModifiedDate(
+    const Maybe<RTPCallerType>& aRTPCallerType, ErrorResult& aRv) {
+  MOZ_ASSERT(mLength == MULTIPARTBLOBIMPL_UNKNOWN_LENGTH);
+  MOZ_ASSERT_IF(mIsFile, IsLastModificationDateUnset());
+
+  uint64_t totalLength = 0;
+  int64_t lastModified = 0;
+  bool lastModifiedSet = false;
+
+  for (uint32_t index = 0, count = mBlobImpls.Length(); index < count;
+       index++) {
+    RefPtr<BlobImpl>& blob = mBlobImpls[index];
+
+    uint64_t subBlobLength = blob->GetSize(aRv);
+    if (NS_WARN_IF(aRv.Failed())) {
+      return;
+    }
+
+    MOZ_ASSERT(UINT64_MAX - subBlobLength >= totalLength);
+    totalLength += subBlobLength;
+
+    if (blob->IsFile()) {
+      int64_t partLastModified = blob->GetLastModified(aRv);
+      if (NS_WARN_IF(aRv.Failed())) {
+        return;
+      }
+
+      if (lastModified < partLastModified) {
+        lastModified = partLastModified * PR_USEC_PER_MSEC;
+        lastModifiedSet = true;
+      }
+    }
+  }
+
+  mLength = totalLength;
+
+  if (mIsFile) {
+    if (lastModifiedSet) {
+      SetLastModificationDatePrecisely(lastModified);
+    } else {
+      MOZ_ASSERT(aRTPCallerType.isSome());
+
+      // We cannot use PR_Now() because bug 493756 and, for this reason:
+      //   var x = new Date(); var f = new File(...);
+      //   x.getTime() < f.dateModified.getTime()
+      // could fail.
+      SetLastModificationDate(aRTPCallerType.value(), JS_Now());
+    }
+  }
+}
+
+size_t MultipartBlobImpl::GetAllocationSize() const {
+  FallibleTArray<BlobImpl*> visitedBlobs;
+
+  // We want to report the unique blob allocation, avoiding duplicated blobs in
+  // the multipart blob tree.
+  size_t total = 0;
+  for (uint32_t i = 0; i < mBlobImpls.Length(); ++i) {
+    total += mBlobImpls[i]->GetAllocationSize(visitedBlobs);
+  }
+
+  return total;
+}
+
+size_t MultipartBlobImpl::GetAllocationSize(
+    FallibleTArray<BlobImpl*>& aVisitedBlobs) const {
+  FallibleTArray<BlobImpl*> visitedBlobs;
+
+  size_t total = 0;
+  for (BlobImpl* blobImpl : mBlobImpls) {
+    if (!aVisitedBlobs.Contains(blobImpl)) {
+      if (NS_WARN_IF(!aVisitedBlobs.AppendElement(blobImpl, fallible))) {
+        return 0;
+      }
+      total += blobImpl->GetAllocationSize(aVisitedBlobs);
+    }
+  }
+
+  return total;
+}
+
+void MultipartBlobImpl::GetBlobImplType(nsAString& aBlobImplType) const {
+  aBlobImplType.AssignLiteral("MultipartBlobImpl[");
+
+  StringJoinAppend(aBlobImplType, u", "_ns, mBlobImpls,
+                   [](nsAString& dest, BlobImpl* subBlobImpl) {
+                     nsAutoString blobImplType;
+                     subBlobImpl->GetBlobImplType(blobImplType);
+
+                     dest.Append(blobImplType);
+                   });
+
+  aBlobImplType.AppendLiteral("]");
+}
+
+void MultipartBlobImpl::SetLastModified(int64_t aLastModified) {
+  SetLastModificationDatePrecisely(aLastModified * PR_USEC_PER_MSEC);
+}