1 files changed, 64 insertions, 0 deletions
diff --git a/dom/quota/EncryptingOutputStream.cpp b/dom/quota/EncryptingOutputStream.cpp
new file mode 100644
index 0000000000..80279eae27
--- /dev/null
+++ b/dom/quota/EncryptingOutputStream.cpp
@@ -0,0 +1,64 @@
+/* -*- 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 "EncryptingOutputStream.h"
+#include "EncryptingOutputStream_impl.h"
+
+#include <type_traits>
+#include "mozilla/MacroForEach.h"
+#include "nsStreamUtils.h"
+
+namespace mozilla::dom::quota {
+
+NS_IMPL_ISUPPORTS(EncryptingOutputStreamBase, nsIOutputStream);
+
+EncryptingOutputStreamBase::EncryptingOutputStreamBase(
+    nsCOMPtr<nsIOutputStream> aBaseStream, size_t aBlockSize)
+    : mBaseStream(WrapNotNull(std::move(aBaseStream))),
+      mBlockSize(aBlockSize) {}
+
+NS_IMETHODIMP EncryptingOutputStreamBase::Write(const char* aBuf,
+                                                uint32_t aCount,
+                                                uint32_t* aResultOut) {
+  return WriteSegments(NS_CopyBufferToSegment, const_cast<char*>(aBuf), aCount,
+                       aResultOut);
+}
+
+NS_IMETHODIMP EncryptingOutputStreamBase::WriteFrom(nsIInputStream*, uint32_t,
+                                                    uint32_t*) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP EncryptingOutputStreamBase::IsNonBlocking(bool* aNonBlockingOut) {
+  *aNonBlockingOut = false;
+  return NS_OK;
+}
+
+nsresult EncryptingOutputStreamBase::WriteAll(const char* aBuf, uint32_t aCount,
+                                              uint32_t* aBytesWrittenOut) {
+  *aBytesWrittenOut = 0;
+
+  if (!mBaseStream) {
+    return NS_BASE_STREAM_CLOSED;
+  }
+
+  uint32_t offset = 0;
+  while (aCount > 0) {
+    uint32_t numWritten = 0;
+    nsresult rv = (*mBaseStream)->Write(aBuf + offset, aCount, &numWritten);
+    if (NS_WARN_IF(NS_FAILED(rv))) {
+      return rv;
+    }
+
+    offset += numWritten;
+    aCount -= numWritten;
+    *aBytesWrittenOut += numWritten;
+  }
+
+  return NS_OK;
+}
+
+}  // namespace mozilla::dom::quota