1 files changed, 160 insertions, 0 deletions
diff --git a/dom/url/URLWorker.cpp b/dom/url/URLWorker.cpp
new file mode 100644
index 0000000000..5fa903fc4b
--- /dev/null
+++ b/dom/url/URLWorker.cpp
@@ -0,0 +1,160 @@
+/* -*- 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 "URLWorker.h"
+
+#include "mozilla/dom/Blob.h"
+#include "mozilla/dom/BlobImpl.h"
+#include "mozilla/dom/BlobURLProtocolHandler.h"
+#include "mozilla/dom/WorkerRunnable.h"
+#include "mozilla/dom/WorkerScope.h"
+
+namespace mozilla::dom {
+
+// This class creates an URL from a DOM Blob on the main thread.
+class CreateURLRunnable : public WorkerMainThreadRunnable {
+ private:
+  BlobImpl* mBlobImpl;
+  nsAString& mURL;
+
+ public:
+  CreateURLRunnable(WorkerPrivate* aWorkerPrivate, BlobImpl* aBlobImpl,
+                    nsAString& aURL)
+      : WorkerMainThreadRunnable(aWorkerPrivate, "URL :: CreateURL"_ns),
+        mBlobImpl(aBlobImpl),
+        mURL(aURL) {
+    MOZ_ASSERT(aBlobImpl);
+  }
+
+  bool MainThreadRun() override {
+    using namespace mozilla::ipc;
+
+    AssertIsOnMainThread();
+
+    nsCOMPtr<nsIPrincipal> principal = mWorkerPrivate->GetPrincipal();
+
+    nsAutoCString url;
+    nsresult rv = BlobURLProtocolHandler::AddDataEntry(
+        mBlobImpl, principal, Some(mWorkerPrivate->AgentClusterId()), url);
+
+    if (NS_FAILED(rv)) {
+      NS_WARNING("Failed to add data entry for the blob!");
+      SetDOMStringToNull(mURL);
+      return false;
+    }
+
+    CopyUTF8toUTF16(url, mURL);
+    return true;
+  }
+};
+
+// This class revokes an URL on the main thread.
+class RevokeURLRunnable : public WorkerMainThreadRunnable {
+ private:
+  const nsString mURL;
+
+ public:
+  RevokeURLRunnable(WorkerPrivate* aWorkerPrivate, const nsAString& aURL)
+      : WorkerMainThreadRunnable(aWorkerPrivate, "URL :: RevokeURL"_ns),
+        mURL(aURL) {}
+
+  bool MainThreadRun() override {
+    AssertIsOnMainThread();
+
+    NS_ConvertUTF16toUTF8 url(mURL);
+
+    BlobURLProtocolHandler::RemoveDataEntry(
+        url, mWorkerPrivate->GetPrincipal(),
+        Some(mWorkerPrivate->AgentClusterId()));
+    return true;
+  }
+};
+
+// This class checks if an URL is valid on the main thread.
+class IsValidURLRunnable : public WorkerMainThreadRunnable {
+ private:
+  const nsString mURL;
+  bool mValid;
+
+ public:
+  IsValidURLRunnable(WorkerPrivate* aWorkerPrivate, const nsAString& aURL)
+      : WorkerMainThreadRunnable(aWorkerPrivate, "URL :: IsValidURL"_ns),
+        mURL(aURL),
+        mValid(false) {}
+
+  bool MainThreadRun() override {
+    AssertIsOnMainThread();
+
+    NS_ConvertUTF16toUTF8 url(mURL);
+    mValid = BlobURLProtocolHandler::HasDataEntry(url);
+
+    return true;
+  }
+
+  bool IsValidURL() const { return mValid; }
+};
+
+/* static */
+void URLWorker::CreateObjectURL(const GlobalObject& aGlobal, Blob& aBlob,
+                                nsAString& aResult, mozilla::ErrorResult& aRv) {
+  JSContext* cx = aGlobal.Context();
+  WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(cx);
+
+  RefPtr<BlobImpl> blobImpl = aBlob.Impl();
+  MOZ_ASSERT(blobImpl);
+
+  RefPtr<CreateURLRunnable> runnable =
+      new CreateURLRunnable(workerPrivate, blobImpl, aResult);
+
+  runnable->Dispatch(Canceling, aRv);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return;
+  }
+
+  WorkerGlobalScope* scope = workerPrivate->GlobalScope();
+  MOZ_ASSERT(scope);
+
+  scope->RegisterHostObjectURI(NS_ConvertUTF16toUTF8(aResult));
+}
+
+/* static */
+void URLWorker::RevokeObjectURL(const GlobalObject& aGlobal,
+                                const nsAString& aUrl, ErrorResult& aRv) {
+  JSContext* cx = aGlobal.Context();
+  WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(cx);
+
+  RefPtr<RevokeURLRunnable> runnable =
+      new RevokeURLRunnable(workerPrivate, aUrl);
+
+  runnable->Dispatch(Canceling, aRv);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return;
+  }
+
+  WorkerGlobalScope* scope = workerPrivate->GlobalScope();
+  MOZ_ASSERT(scope);
+
+  scope->UnregisterHostObjectURI(NS_ConvertUTF16toUTF8(aUrl));
+}
+
+/* static */
+bool URLWorker::IsValidURL(const GlobalObject& aGlobal, const nsAString& aUrl,
+                           ErrorResult& aRv) {
+  JSContext* cx = aGlobal.Context();
+  WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(cx);
+
+  RefPtr<IsValidURLRunnable> runnable =
+      new IsValidURLRunnable(workerPrivate, aUrl);
+
+  runnable->Dispatch(Canceling, aRv);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return false;
+  }
+
+  return runnable->IsValidURL();
+}
+
+}  // namespace mozilla::dom