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/* -*- 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::IsValidObjectURL(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
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