Adding upstream version 115.7.0esr.upstream/115.7.0esr

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

1 files changed, 294 insertions, 0 deletions

diff --git a/dom/file/FileBlobImpl.cpp b/dom/file/FileBlobImpl.cpp
new file mode 100644
index 0000000000..af80476e1a
--- /dev/null
+++ b/dom/file/FileBlobImpl.cpp
@@ -0,0 +1,294 @@
+/* -*- 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 "FileBlobImpl.h"
+#include "BaseBlobImpl.h"
+#include "mozilla/SlicedInputStream.h"
+#include "mozilla/dom/WorkerPrivate.h"
+#include "mozilla/dom/WorkerRunnable.h"
+#include "nsCExternalHandlerService.h"
+#include "nsIFile.h"
+#include "nsIFileStreams.h"
+#include "nsIMIMEService.h"
+#include "nsNetUtil.h"
+#include "nsStreamUtils.h"
+
+namespace mozilla::dom {
+
+FileBlobImpl::FileBlobImpl(nsIFile* aFile)
+    : mMutex("FileBlobImpl::mMutex"),
+      mFile(aFile),
+      mSerialNumber(BaseBlobImpl::NextSerialNumber()),
+      mStart(0),
+      mFileId(-1),
+      mIsFile(true),
+      mWholeFile(true) {
+  MOZ_ASSERT(mFile, "must have file");
+  MOZ_ASSERT(XRE_IsParentProcess());
+  // Lazily get the content type and size
+  mContentType.SetIsVoid(true);
+  mMozFullPath.SetIsVoid(true);
+  mFile->GetLeafName(mName);
+}
+
+FileBlobImpl::FileBlobImpl(const nsAString& aName,
+                           const nsAString& aContentType, uint64_t aLength,
+                           nsIFile* aFile)
+    : mMutex("FileBlobImpl::mMutex"),
+      mFile(aFile),
+      mContentType(aContentType),
+      mName(aName),
+      mSerialNumber(BaseBlobImpl::NextSerialNumber()),
+      mStart(0),
+      mFileId(-1),
+      mLength(Some(aLength)),
+      mIsFile(true),
+      mWholeFile(true) {
+  MOZ_ASSERT(mFile, "must have file");
+  MOZ_ASSERT(XRE_IsParentProcess());
+  mMozFullPath.SetIsVoid(true);
+}
+
+FileBlobImpl::FileBlobImpl(const nsAString& aName,
+                           const nsAString& aContentType, uint64_t aLength,
+                           nsIFile* aFile, int64_t aLastModificationDate)
+    : mMutex("FileBlobImpl::mMutex"),
+      mFile(aFile),
+      mContentType(aContentType),
+      mName(aName),
+      mSerialNumber(BaseBlobImpl::NextSerialNumber()),
+      mStart(0),
+      mFileId(-1),
+      mLength(Some(aLength)),
+      mLastModified(Some(aLastModificationDate)),
+      mIsFile(true),
+      mWholeFile(true) {
+  MOZ_ASSERT(mFile, "must have file");
+  MOZ_ASSERT(XRE_IsParentProcess());
+  mMozFullPath.SetIsVoid(true);
+}
+
+FileBlobImpl::FileBlobImpl(nsIFile* aFile, const nsAString& aName,
+                           const nsAString& aContentType)
+    : mMutex("FileBlobImpl::mMutex"),
+      mFile(aFile),
+      mContentType(aContentType),
+      mName(aName),
+      mSerialNumber(BaseBlobImpl::NextSerialNumber()),
+      mStart(0),
+      mFileId(-1),
+      mIsFile(true),
+      mWholeFile(true) {
+  MOZ_ASSERT(mFile, "must have file");
+  MOZ_ASSERT(XRE_IsParentProcess());
+  if (aContentType.IsEmpty()) {
+    // Lazily get the content type and size
+    mContentType.SetIsVoid(true);
+  }
+
+  mMozFullPath.SetIsVoid(true);
+}
+
+FileBlobImpl::FileBlobImpl(const FileBlobImpl* aOther, uint64_t aStart,
+                           uint64_t aLength, const nsAString& aContentType)
+    : mMutex("FileBlobImpl::mMutex"),
+      mFile(aOther->mFile),
+      mContentType(aContentType),
+      mSerialNumber(BaseBlobImpl::NextSerialNumber()),
+      mStart(aOther->mStart + aStart),
+      mFileId(-1),
+      mLength(Some(aLength)),
+      mIsFile(false),
+      mWholeFile(false) {
+  MOZ_ASSERT(mFile, "must have file");
+  MOZ_ASSERT(XRE_IsParentProcess());
+  mMozFullPath = aOther->mMozFullPath;
+}
+
+already_AddRefed<BlobImpl> FileBlobImpl::CreateSlice(
+    uint64_t aStart, uint64_t aLength, const nsAString& aContentType,
+    ErrorResult& aRv) const {
+  RefPtr<FileBlobImpl> impl =
+      new FileBlobImpl(this, aStart, aLength, aContentType);
+  return impl.forget();
+}
+
+void FileBlobImpl::GetMozFullPathInternal(nsAString& aFilename,
+                                          ErrorResult& aRv) {
+  MOZ_ASSERT(mIsFile, "Should only be called on files");
+
+  MutexAutoLock lock(mMutex);
+
+  if (!mMozFullPath.IsVoid()) {
+    aFilename = mMozFullPath;
+    return;
+  }
+
+  aRv = mFile->GetPath(aFilename);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return;
+  }
+
+  mMozFullPath = aFilename;
+}
+
+uint64_t FileBlobImpl::GetSize(ErrorResult& aRv) {
+  MutexAutoLock lock(mMutex);
+
+  if (mLength.isNothing()) {
+    MOZ_ASSERT(mWholeFile,
+               "Should only use lazy size when using the whole file");
+    int64_t fileSize;
+    aRv = mFile->GetFileSize(&fileSize);
+    if (NS_WARN_IF(aRv.Failed())) {
+      return 0;
+    }
+
+    if (fileSize < 0) {
+      aRv.Throw(NS_ERROR_FAILURE);
+      return 0;
+    }
+
+    mLength.emplace(fileSize);
+  }
+
+  return mLength.value();
+}
+
+class FileBlobImpl::GetTypeRunnable final : public WorkerMainThreadRunnable {
+ public:
+  GetTypeRunnable(WorkerPrivate* aWorkerPrivate, FileBlobImpl* aBlobImpl,
+                  const MutexAutoLock& aProofOfLock)
+      : WorkerMainThreadRunnable(aWorkerPrivate, "FileBlobImpl :: GetType"_ns),
+        mBlobImpl(aBlobImpl),
+        mProofOfLock(aProofOfLock) {
+    MOZ_ASSERT(aBlobImpl);
+    aWorkerPrivate->AssertIsOnWorkerThread();
+  }
+
+  bool MainThreadRun() override {
+    MOZ_ASSERT(NS_IsMainThread());
+
+    nsAutoString type;
+    mBlobImpl->GetTypeInternal(type, mProofOfLock);
+    return true;
+  }
+
+ private:
+  ~GetTypeRunnable() override = default;
+
+  RefPtr<FileBlobImpl> mBlobImpl;
+  const MutexAutoLock& mProofOfLock;
+};
+
+void FileBlobImpl::GetType(nsAString& aType) {
+  MutexAutoLock lock(mMutex);
+  GetTypeInternal(aType, lock);
+}
+
+void FileBlobImpl::GetTypeInternal(nsAString& aType,
+                                   const MutexAutoLock& aProofOfLock) {
+  aType.Truncate();
+
+  if (mContentType.IsVoid()) {
+    MOZ_ASSERT(mWholeFile,
+               "Should only use lazy ContentType when using the whole file");
+
+    if (!NS_IsMainThread()) {
+      WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();
+      if (!workerPrivate) {
+        // I have no idea in which thread this method is called. We cannot
+        // return any valid value.
+        return;
+      }
+
+      RefPtr<GetTypeRunnable> runnable =
+          new GetTypeRunnable(workerPrivate, this, aProofOfLock);
+
+      ErrorResult rv;
+      runnable->Dispatch(Canceling, rv);
+      if (NS_WARN_IF(rv.Failed())) {
+        rv.SuppressException();
+        return;
+      }
+    } else {
+      nsresult rv;
+      nsCOMPtr<nsIMIMEService> mimeService =
+          do_GetService(NS_MIMESERVICE_CONTRACTID, &rv);
+      if (NS_WARN_IF(NS_FAILED(rv))) {
+        return;
+      }
+
+      nsAutoCString mimeType;
+      rv = mimeService->GetTypeFromFile(mFile, mimeType);
+      if (NS_FAILED(rv)) {
+        mimeType.Truncate();
+      }
+
+      AppendUTF8toUTF16(mimeType, mContentType);
+      mContentType.SetIsVoid(false);
+    }
+  }
+
+  aType = mContentType;
+}
+
+void FileBlobImpl::GetBlobImplType(nsAString& aBlobImplType) const {
+  aBlobImplType = u"FileBlobImpl"_ns;
+}
+
+int64_t FileBlobImpl::GetLastModified(ErrorResult& aRv) {
+  MOZ_ASSERT(mIsFile, "Should only be called on files");
+
+  MutexAutoLock lock(mMutex);
+
+  if (mLastModified.isNothing()) {
+    PRTime msecs;
+    aRv = mFile->GetLastModifiedTime(&msecs);
+    if (NS_WARN_IF(aRv.Failed())) {
+      return 0;
+    }
+
+    mLastModified.emplace(int64_t(msecs));
+  }
+
+  return mLastModified.value();
+}
+
+const uint32_t sFileStreamFlags =
+    nsIFileInputStream::CLOSE_ON_EOF | nsIFileInputStream::REOPEN_ON_REWIND |
+    nsIFileInputStream::DEFER_OPEN | nsIFileInputStream::SHARE_DELETE;
+
+void FileBlobImpl::CreateInputStream(nsIInputStream** aStream,
+                                     ErrorResult& aRv) const {
+  nsCOMPtr<nsIInputStream> stream;
+  aRv = NS_NewLocalFileInputStream(getter_AddRefs(stream), mFile, -1, -1,
+                                   sFileStreamFlags);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return;
+  }
+
+  if (mWholeFile) {
+    stream.forget(aStream);
+    return;
+  }
+
+  MOZ_ASSERT(mLength.isSome());
+
+  RefPtr<SlicedInputStream> slicedInputStream =
+      new SlicedInputStream(stream.forget(), mStart, mLength.value());
+  slicedInputStream.forget(aStream);
+}
+
+bool FileBlobImpl::IsDirectory() const {
+  bool isDirectory = false;
+  if (mFile) {
+    mFile->IsDirectory(&isDirectory);
+  }
+  return isDirectory;
+}
+
+}  // namespace mozilla::dom