Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

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

1 files changed, 200 insertions, 0 deletions

diff --git a/dom/quota/FileStreams.cpp b/dom/quota/FileStreams.cpp
new file mode 100644
index 0000000000..22419fe70c
--- /dev/null
+++ b/dom/quota/FileStreams.cpp
@@ -0,0 +1,200 @@
+/* -*- 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 "FileStreams.h"
+
+// Local includes
+#include "QuotaCommon.h"
+#include "QuotaManager.h"
+#include "QuotaObject.h"
+#include "RemoteQuotaObject.h"
+
+// Global includes
+#include <utility>
+#include "mozilla/Assertions.h"
+#include "mozilla/DebugOnly.h"
+#include "mozilla/Result.h"
+#include "mozilla/dom/quota/ResultExtensions.h"
+#include "mozilla/ipc/RandomAccessStreamParams.h"
+#include "nsDebug.h"
+#include "prio.h"
+
+namespace mozilla::dom::quota {
+
+template <class FileStreamBase>
+NS_IMETHODIMP FileQuotaStream<FileStreamBase>::SetEOF() {
+  // If the stream is not quota tracked, or on an early or late stage in the
+  // lifecycle, mQuotaObject is null. Under these circumstances,
+  // we don't check the quota limit in order to avoid breakage.
+  if (mQuotaObject) {
+    int64_t offset = 0;
+    QM_TRY(MOZ_TO_RESULT(FileStreamBase::Tell(&offset)));
+
+    QM_TRY(OkIf(mQuotaObject->MaybeUpdateSize(offset, /* aTruncate */ true)),
+           NS_ERROR_FILE_NO_DEVICE_SPACE);
+  }
+
+  QM_TRY(MOZ_TO_RESULT(FileStreamBase::SetEOF()));
+
+  return NS_OK;
+}
+
+template <class FileStreamBase>
+NS_IMETHODIMP FileQuotaStream<FileStreamBase>::Close() {
+  QM_TRY(MOZ_TO_RESULT(FileStreamBase::Close()));
+
+  if (mQuotaObject) {
+    if (auto* remoteQuotaObject = mQuotaObject->AsRemoteQuotaObject()) {
+      remoteQuotaObject->Close();
+    }
+
+    mQuotaObject = nullptr;
+  }
+
+  return NS_OK;
+}
+
+template <class FileStreamBase>
+nsresult FileQuotaStream<FileStreamBase>::DoOpen() {
+  MOZ_RELEASE_ASSERT(XRE_IsParentProcess());
+  MOZ_RELEASE_ASSERT(!mDeserialized);
+
+  QuotaManager* quotaManager = QuotaManager::Get();
+  MOZ_ASSERT(quotaManager, "Shouldn't be null!");
+
+  MOZ_ASSERT(!mQuotaObject, "Creating quota object more than once?");
+  mQuotaObject = quotaManager->GetQuotaObject(
+      mPersistenceType, mOriginMetadata, mClientType,
+      FileStreamBase::mOpenParams.localFile);
+
+  QM_TRY(MOZ_TO_RESULT(FileStreamBase::DoOpen()));
+
+  if (mQuotaObject && (FileStreamBase::mOpenParams.ioFlags & PR_TRUNCATE)) {
+    DebugOnly<bool> res =
+        mQuotaObject->MaybeUpdateSize(0, /* aTruncate */ true);
+    MOZ_ASSERT(res);
+  }
+
+  return NS_OK;
+}
+
+template <class FileStreamBase>
+NS_IMETHODIMP FileQuotaStreamWithWrite<FileStreamBase>::Write(
+    const char* aBuf, uint32_t aCount, uint32_t* _retval) {
+  if (FileQuotaStreamWithWrite::mQuotaObject) {
+    int64_t offset;
+    QM_TRY(MOZ_TO_RESULT(FileStreamBase::Tell(&offset)));
+
+    MOZ_ASSERT(INT64_MAX - offset >= int64_t(aCount));
+
+    if (!FileQuotaStreamWithWrite::mQuotaObject->MaybeUpdateSize(
+            offset + int64_t(aCount),
+            /* aTruncate */ false)) {
+      *_retval = 0;
+      return NS_ERROR_FILE_NO_DEVICE_SPACE;
+    }
+  }
+
+  QM_TRY(MOZ_TO_RESULT(FileStreamBase::Write(aBuf, aCount, _retval)));
+
+  return NS_OK;
+}
+
+mozilla::ipc::RandomAccessStreamParams FileRandomAccessStream::Serialize(
+    nsIInterfaceRequestor* aCallbacks) {
+  MOZ_RELEASE_ASSERT(XRE_IsParentProcess());
+  MOZ_RELEASE_ASSERT(!mDeserialized);
+  MOZ_ASSERT(mOpenParams.localFile);
+
+  QuotaManager* quotaManager = QuotaManager::Get();
+  MOZ_ASSERT(quotaManager);
+
+  RefPtr<QuotaObject> quotaObject = quotaManager->GetQuotaObject(
+      mPersistenceType, mOriginMetadata, mClientType, mOpenParams.localFile);
+  MOZ_ASSERT(quotaObject);
+
+  IPCQuotaObject ipcQuotaObject = quotaObject->Serialize(aCallbacks);
+
+  mozilla::ipc::RandomAccessStreamParams randomAccessStreamParams =
+      nsFileRandomAccessStream::Serialize(aCallbacks);
+
+  MOZ_ASSERT(
+      randomAccessStreamParams.type() ==
+      mozilla::ipc::RandomAccessStreamParams::TFileRandomAccessStreamParams);
+
+  mozilla::ipc::LimitingFileRandomAccessStreamParams
+      limitingFileRandomAccessStreamParams;
+  limitingFileRandomAccessStreamParams.fileRandomAccessStreamParams() =
+      std::move(randomAccessStreamParams);
+  limitingFileRandomAccessStreamParams.quotaObject() =
+      std::move(ipcQuotaObject);
+
+  return limitingFileRandomAccessStreamParams;
+}
+
+bool FileRandomAccessStream::Deserialize(
+    mozilla::ipc::RandomAccessStreamParams& aParams) {
+  MOZ_ASSERT(aParams.type() == mozilla::ipc::RandomAccessStreamParams::
+                                   TLimitingFileRandomAccessStreamParams);
+
+  auto& params = aParams.get_LimitingFileRandomAccessStreamParams();
+
+  mozilla::ipc::RandomAccessStreamParams randomAccessStreamParams(
+      std::move(params.fileRandomAccessStreamParams()));
+
+  QM_TRY(MOZ_TO_RESULT(
+             nsFileRandomAccessStream::Deserialize(randomAccessStreamParams)),
+         false);
+
+  mQuotaObject = QuotaObject::Deserialize(params.quotaObject());
+
+  return true;
+}
+
+Result<MovingNotNull<nsCOMPtr<nsIInputStream>>, nsresult> CreateFileInputStream(
+    PersistenceType aPersistenceType, const OriginMetadata& aOriginMetadata,
+    Client::Type aClientType, nsIFile* aFile, int32_t aIOFlags, int32_t aPerm,
+    int32_t aBehaviorFlags) {
+  auto stream = MakeRefPtr<FileInputStream>(aPersistenceType, aOriginMetadata,
+                                            aClientType);
+
+  QM_TRY(MOZ_TO_RESULT(stream->Init(aFile, aIOFlags, aPerm, aBehaviorFlags)));
+
+  return WrapMovingNotNullUnchecked(
+      nsCOMPtr<nsIInputStream>(std::move(stream)));
+}
+
+Result<MovingNotNull<nsCOMPtr<nsIOutputStream>>, nsresult>
+CreateFileOutputStream(PersistenceType aPersistenceType,
+                       const OriginMetadata& aOriginMetadata,
+                       Client::Type aClientType, nsIFile* aFile,
+                       int32_t aIOFlags, int32_t aPerm,
+                       int32_t aBehaviorFlags) {
+  auto stream = MakeRefPtr<FileOutputStream>(aPersistenceType, aOriginMetadata,
+                                             aClientType);
+
+  QM_TRY(MOZ_TO_RESULT(stream->Init(aFile, aIOFlags, aPerm, aBehaviorFlags)));
+
+  return WrapMovingNotNullUnchecked(
+      nsCOMPtr<nsIOutputStream>(std::move(stream)));
+}
+
+Result<MovingNotNull<nsCOMPtr<nsIRandomAccessStream>>, nsresult>
+CreateFileRandomAccessStream(PersistenceType aPersistenceType,
+                             const OriginMetadata& aOriginMetadata,
+                             Client::Type aClientType, nsIFile* aFile,
+                             int32_t aIOFlags, int32_t aPerm,
+                             int32_t aBehaviorFlags) {
+  auto stream = MakeRefPtr<FileRandomAccessStream>(
+      aPersistenceType, aOriginMetadata, aClientType);
+
+  QM_TRY(MOZ_TO_RESULT(stream->Init(aFile, aIOFlags, aPerm, aBehaviorFlags)));
+
+  return WrapMovingNotNullUnchecked(
+      nsCOMPtr<nsIRandomAccessStream>(std::move(stream)));
+}
+
+}  // namespace mozilla::dom::quota