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-rw-r--r--dom/file/uri/BlobURLChannel.cpp86
1 files changed, 86 insertions, 0 deletions
diff --git a/dom/file/uri/BlobURLChannel.cpp b/dom/file/uri/BlobURLChannel.cpp
new file mode 100644
index 0000000000..6a7d4f1be6
--- /dev/null
+++ b/dom/file/uri/BlobURLChannel.cpp
@@ -0,0 +1,86 @@
+/* -*- 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 "BlobURLChannel.h"
+#include "mozilla/dom/BlobImpl.h"
+#include "mozilla/dom/BlobURL.h"
+#include "mozilla/dom/BlobURLInputStream.h"
+
+using namespace mozilla::dom;
+
+BlobURLChannel::BlobURLChannel(nsIURI* aURI, nsILoadInfo* aLoadInfo)
+ : mContentStreamOpened(false) {
+ SetURI(aURI);
+ SetOriginalURI(aURI);
+ SetLoadInfo(aLoadInfo);
+
+ // If we're sandboxed, make sure to clear any owner the channel
+ // might already have.
+ if (aLoadInfo && aLoadInfo->GetLoadingSandboxed()) {
+ SetOwner(nullptr);
+ }
+}
+
+BlobURLChannel::~BlobURLChannel() = default;
+
+NS_IMETHODIMP
+BlobURLChannel::SetContentType(const nsACString& aContentType) {
+ // If the blob type is empty, set the content type of the channel to the
+ // empty string.
+ if (aContentType.IsEmpty()) {
+ mContentType.Truncate();
+ return NS_OK;
+ }
+
+ return nsBaseChannel::SetContentType(aContentType);
+}
+
+nsresult BlobURLChannel::OpenContentStream(bool aAsync,
+ nsIInputStream** aResult,
+ nsIChannel** aChannel) {
+ if (mContentStreamOpened) {
+ return NS_ERROR_ALREADY_OPENED;
+ }
+
+ mContentStreamOpened = true;
+
+ nsCOMPtr<nsIURI> uri;
+ nsresult rv = GetURI(getter_AddRefs(uri));
+ NS_ENSURE_SUCCESS(rv, NS_ERROR_MALFORMED_URI);
+
+ RefPtr<BlobURL> blobURL;
+ rv = uri->QueryInterface(kHOSTOBJECTURICID, getter_AddRefs(blobURL));
+
+ if (NS_WARN_IF(NS_FAILED(rv)) || NS_WARN_IF(!blobURL)) {
+ return NS_ERROR_MALFORMED_URI;
+ }
+
+ if (blobURL->Revoked()) {
+#ifdef MOZ_WIDGET_ANDROID
+ nsCOMPtr<nsILoadInfo> loadInfo;
+ GetLoadInfo(getter_AddRefs(loadInfo));
+ // if the channel was not triggered by the system principal,
+ // then we return here because the URL had been revoked
+ if (loadInfo && !loadInfo->TriggeringPrincipal()->IsSystemPrincipal()) {
+ return NS_ERROR_MALFORMED_URI;
+ }
+#else
+ return NS_ERROR_MALFORMED_URI;
+#endif
+ }
+
+ nsCOMPtr<nsIInputStream> inputStream =
+ BlobURLInputStream::Create(this, blobURL);
+ if (NS_WARN_IF(!inputStream)) {
+ return NS_ERROR_MALFORMED_URI;
+ }
+
+ EnableSynthesizedProgressEvents(true);
+
+ inputStream.forget(aResult);
+
+ return NS_OK;
+}