gecko-dev/dom/url/URLWorker.cpp

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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/BlobURLProtocolHandler.h"
#include "mozilla/dom/WorkerPrivate.h"
#include "mozilla/dom/WorkerRunnable.h"
#include "mozilla/dom/WorkerScope.h"
#include "mozilla/Unused.h"
#include "nsProxyRelease.h"
#include "nsStandardURL.h"
#include "nsURLHelper.h"
namespace mozilla {
using net::nsStandardURL;
namespace 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,
NS_LITERAL_CSTRING("URL :: CreateURL"))
, mBlobImpl(aBlobImpl)
, mURL(aURL)
{
MOZ_ASSERT(aBlobImpl);
DebugOnly<bool> isMutable;
MOZ_ASSERT(NS_SUCCEEDED(aBlobImpl->GetMutable(&isMutable)));
MOZ_ASSERT(!isMutable);
}
bool
MainThreadRun() override
{
using namespace mozilla::ipc;
AssertIsOnMainThread();
DebugOnly<bool> isMutable;
MOZ_ASSERT(NS_SUCCEEDED(mBlobImpl->GetMutable(&isMutable)));
MOZ_ASSERT(!isMutable);
nsCOMPtr<nsIPrincipal> principal = mWorkerPrivate->GetPrincipal();
nsAutoCString url;
nsresult rv =
BlobURLProtocolHandler::AddDataEntry(mBlobImpl, principal, url);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to add data entry for the blob!");
SetDOMStringToNull(mURL);
return false;
}
if (!mWorkerPrivate->IsSharedWorker() &&
!mWorkerPrivate->IsServiceWorker()) {
// Walk up to top worker object.
WorkerPrivate* wp = mWorkerPrivate;
while (WorkerPrivate* parent = wp->GetParent()) {
wp = parent;
}
nsCOMPtr<nsIScriptContext> sc = wp->GetScriptContext();
// We could not have a ScriptContext in JSM code. In this case, we leak.
if (sc) {
nsCOMPtr<nsIGlobalObject> global = sc->GetGlobalObject();
MOZ_ASSERT(global);
global->RegisterHostObjectURI(url);
}
}
mURL = NS_ConvertUTF8toUTF16(url);
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,
NS_LITERAL_CSTRING("URL :: RevokeURL"))
, mURL(aURL)
{}
bool
MainThreadRun() override
{
AssertIsOnMainThread();
NS_ConvertUTF16toUTF8 url(mURL);
nsIPrincipal* urlPrincipal =
BlobURLProtocolHandler::GetDataEntryPrincipal(url);
nsCOMPtr<nsIPrincipal> principal = mWorkerPrivate->GetPrincipal();
bool subsumes;
if (urlPrincipal &&
NS_SUCCEEDED(principal->Subsumes(urlPrincipal, &subsumes)) &&
subsumes) {
BlobURLProtocolHandler::RemoveDataEntry(url);
}
if (!mWorkerPrivate->IsSharedWorker() &&
!mWorkerPrivate->IsServiceWorker()) {
// Walk up to top worker object.
WorkerPrivate* wp = mWorkerPrivate;
while (WorkerPrivate* parent = wp->GetParent()) {
wp = parent;
}
nsCOMPtr<nsIScriptContext> sc = wp->GetScriptContext();
// We could not have a ScriptContext in JSM code. In this case, we leak.
if (sc) {
nsCOMPtr<nsIGlobalObject> global = sc->GetGlobalObject();
MOZ_ASSERT(global);
global->UnregisterHostObjectURI(url);
}
}
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,
NS_LITERAL_CSTRING("URL :: IsValidURL"))
, mURL(aURL)
, mValid(false)
{}
bool
MainThreadRun() override
{
AssertIsOnMainThread();
NS_ConvertUTF16toUTF8 url(mURL);
mValid = BlobURLProtocolHandler::HasDataEntry(url);
return true;
}
bool
IsValidURL() const
{
return mValid;
}
};
// This class creates a URL object on the main thread.
class ConstructorRunnable : public WorkerMainThreadRunnable
{
private:
const nsString mURL;
nsString mBase; // IsVoid() if we have no base URI string.
nsCOMPtr<nsIURI> mRetval;
public:
ConstructorRunnable(WorkerPrivate* aWorkerPrivate,
const nsAString& aURL, const Optional<nsAString>& aBase)
: WorkerMainThreadRunnable(aWorkerPrivate,
NS_LITERAL_CSTRING("URL :: Constructor"))
, mURL(aURL)
{
if (aBase.WasPassed()) {
mBase = aBase.Value();
} else {
mBase.SetIsVoid(true);
}
mWorkerPrivate->AssertIsOnWorkerThread();
}
bool
MainThreadRun() override
{
AssertIsOnMainThread();
nsCOMPtr<nsIURI> baseUri;
if (!mBase.IsVoid()) {
nsresult rv = NS_NewURI(getter_AddRefs(baseUri), mBase, nullptr, nullptr,
nsContentUtils::GetIOService());
if (NS_WARN_IF(NS_FAILED(rv))) {
return true;
}
}
nsCOMPtr<nsIURI> uri;
nsresult rv = NS_NewURI(getter_AddRefs(uri), mURL, nullptr, baseUri,
nsContentUtils::GetIOService());
if (NS_WARN_IF(NS_FAILED(rv))) {
return true;
}
mRetval = std::move(uri);
return true;
}
nsIURI*
GetURI(ErrorResult& aRv) const
{
MOZ_ASSERT(mWorkerPrivate);
mWorkerPrivate->AssertIsOnWorkerThread();
if (!mRetval) {
aRv.ThrowTypeError<MSG_INVALID_URL>(mURL);
}
return mRetval;
}
};
class OriginGetterRunnable : public WorkerMainThreadRunnable
{
public:
OriginGetterRunnable(WorkerPrivate* aWorkerPrivate,
nsAString& aValue,
nsIURI* aURI)
: WorkerMainThreadRunnable(aWorkerPrivate,
// We can have telemetry keys for each getter when
// needed.
NS_LITERAL_CSTRING("URL :: getter"))
, mValue(aValue)
, mURI(aURI)
{
mWorkerPrivate->AssertIsOnWorkerThread();
}
bool
MainThreadRun() override
{
AssertIsOnMainThread();
ErrorResult rv;
nsContentUtils::GetUTFOrigin(mURI, mValue);
return true;
}
void
Dispatch(ErrorResult& aRv)
{
WorkerMainThreadRunnable::Dispatch(Canceling, aRv);
}
private:
nsAString& mValue;
nsCOMPtr<nsIURI> mURI;
};
class ProtocolSetterRunnable : public WorkerMainThreadRunnable
{
public:
ProtocolSetterRunnable(WorkerPrivate* aWorkerPrivate,
const nsACString& aValue,
nsIURI* aURI)
: WorkerMainThreadRunnable(aWorkerPrivate,
NS_LITERAL_CSTRING("ProtocolSetterRunnable"))
, mValue(aValue)
, mURI(aURI)
{
mWorkerPrivate->AssertIsOnWorkerThread();
}
bool
MainThreadRun() override
{
AssertIsOnMainThread();
nsCOMPtr<nsIURI> clone;
nsresult rv = NS_MutateURI(mURI)
.SetScheme(mValue)
.Finalize(clone);
if (NS_WARN_IF(NS_FAILED(rv))) {
return true;
}
nsAutoCString href;
rv = clone->GetSpec(href);
if (NS_WARN_IF(NS_FAILED(rv))) {
return true;
}
nsCOMPtr<nsIURI> uri;
rv = NS_NewURI(getter_AddRefs(uri), href);
if (NS_WARN_IF(NS_FAILED(rv))) {
return true;
}
mRetval = std::move(uri);
return true;
}
void
Dispatch(ErrorResult& aRv)
{
WorkerMainThreadRunnable::Dispatch(Canceling, aRv);
}
nsIURI*
GetRetval() const
{
return mRetval;
}
private:
const nsCString mValue;
nsCOMPtr<nsIURI> mURI;
nsCOMPtr<nsIURI> mRetval;
};
/* static */ already_AddRefed<URLWorker>
URLWorker::Constructor(const GlobalObject& aGlobal, const nsAString& aURL,
const Optional<nsAString>& aBase, ErrorResult& aRv)
{
JSContext* cx = aGlobal.Context();
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(cx);
RefPtr<URLWorker> url = new URLWorker(workerPrivate);
url->Init(aURL, aBase, aRv);
return aRv.Failed() ? nullptr : url.forget();
}
/* static */ already_AddRefed<URLWorker>
URLWorker::Constructor(const GlobalObject& aGlobal, const nsAString& aURL,
const nsAString& aBase, ErrorResult& aRv)
{
Optional<nsAString> base;
base = &aBase;
return Constructor(aGlobal, aURL, base, aRv);
}
/* 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);
aRv = blobImpl->SetMutable(false);
if (NS_WARN_IF(aRv.Failed())) {
return;
}
RefPtr<CreateURLRunnable> runnable =
new CreateURLRunnable(workerPrivate, blobImpl, aResult);
runnable->Dispatch(Canceling, aRv);
if (NS_WARN_IF(aRv.Failed())) {
return;
}
if (workerPrivate->IsSharedWorker() || workerPrivate->IsServiceWorker()) {
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;
}
if (workerPrivate->IsSharedWorker() || workerPrivate->IsServiceWorker()) {
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();
}
URLWorker::URLWorker(WorkerPrivate* aWorkerPrivate)
: URL(nullptr)
, mWorkerPrivate(aWorkerPrivate)
{}
void
URLWorker::Init(const nsAString& aURL, const Optional<nsAString>& aBase,
ErrorResult& aRv)
{
nsAutoCString scheme;
nsresult rv = net_ExtractURLScheme(NS_ConvertUTF16toUTF8(aURL), scheme);
if (NS_FAILED(rv)) {
// this may be a relative URL, check baseURL
if (!aBase.WasPassed()) {
aRv.ThrowTypeError<MSG_INVALID_URL>(aURL);
return;
}
rv = net_ExtractURLScheme(NS_ConvertUTF16toUTF8(aBase.Value()), scheme);
if (NS_WARN_IF(NS_FAILED(rv))) {
aRv.ThrowTypeError<MSG_INVALID_URL>(aURL);
return;
}
}
// create url proxy
RefPtr<ConstructorRunnable> runnable =
new ConstructorRunnable(mWorkerPrivate, aURL, aBase);
runnable->Dispatch(Canceling, aRv);
if (NS_WARN_IF(aRv.Failed())) {
return;
}
nsCOMPtr<nsIURI> uri = runnable->GetURI(aRv);
if (NS_WARN_IF(aRv.Failed())) {
return;
}
SetURI(uri.forget());
}
URLWorker::~URLWorker() = default;
void
URLWorker::SetHref(const nsAString& aHref, ErrorResult& aRv)
{
nsAutoCString scheme;
nsresult rv = net_ExtractURLScheme(NS_ConvertUTF16toUTF8(aHref), scheme);
if (NS_FAILED(rv)) {
aRv.ThrowTypeError<MSG_INVALID_URL>(aHref);
return;
}
RefPtr<ConstructorRunnable> runnable =
new ConstructorRunnable(mWorkerPrivate, aHref, Optional<nsAString>());
runnable->Dispatch(Canceling, aRv);
if (NS_WARN_IF(aRv.Failed())) {
return;
}
nsCOMPtr<nsIURI> uri = runnable->GetURI(aRv);
if (NS_WARN_IF(aRv.Failed())) {
return;
}
SetURI(uri.forget());
UpdateURLSearchParams();
}
void
URLWorker::GetOrigin(nsAString& aOrigin, ErrorResult& aRv) const
{
RefPtr<OriginGetterRunnable> runnable =
new OriginGetterRunnable(mWorkerPrivate, aOrigin, GetURI());
runnable->Dispatch(aRv);
}
void
URLWorker::SetProtocol(const nsAString& aProtocol, ErrorResult& aRv)
{
nsAString::const_iterator start, end;
aProtocol.BeginReading(start);
aProtocol.EndReading(end);
nsAString::const_iterator iter(start);
FindCharInReadable(':', iter, end);
NS_ConvertUTF16toUTF8 scheme(Substring(start, iter));
RefPtr<ProtocolSetterRunnable> runnable =
new ProtocolSetterRunnable(mWorkerPrivate, scheme, GetURI());
runnable->Dispatch(aRv);
if (NS_WARN_IF(aRv.Failed())) {
return;
}
nsCOMPtr<nsIURI> uri = runnable->GetRetval();
if (NS_WARN_IF(!uri)) {
return;
}
SetURI(uri.forget());
}
} // namespace dom
} // namespace mozilla