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/*
* Copyright (C) 2009 Google Inc. All rights reserved.
* Copyright (C) 2010 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "third_party/blink/renderer/core/workers/shared_worker.h"
#include "third_party/blink/renderer/bindings/core/v8/exception_state.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/frame/local_frame_client.h"
#include "third_party/blink/renderer/core/frame/use_counter.h"
#include "third_party/blink/renderer/core/messaging/message_channel.h"
#include "third_party/blink/renderer/core/messaging/message_port.h"
#include "third_party/blink/renderer/core/probe/core_probes.h"
#include "third_party/blink/renderer/core/workers/shared_worker_repository_client.h"
#include "third_party/blink/renderer/platform/weborigin/kurl.h"
#include "third_party/blink/renderer/platform/weborigin/security_origin.h"
namespace blink {
inline SharedWorker::SharedWorker(ExecutionContext* context)
: AbstractWorker(context), is_being_connected_(false) {}
SharedWorker* SharedWorker::Create(ExecutionContext* context,
const String& url,
const String& name,
ExceptionState& exception_state) {
DCHECK(IsMainThread());
SECURITY_DCHECK(context->IsDocument());
UseCounter::Count(context, WebFeature::kSharedWorkerStart);
SharedWorker* worker = new SharedWorker(context);
MessageChannel* channel = MessageChannel::Create(context);
worker->port_ = channel->port1();
MessagePortChannel remote_port = channel->port2()->Disentangle();
// We don't currently support nested workers, so workers can only be created
// from documents.
Document* document = ToDocument(context);
if (!document->GetSecurityOrigin()->CanAccessSharedWorkers()) {
exception_state.ThrowSecurityError(
"Access to shared workers is denied to origin '" +
document->GetSecurityOrigin()->ToString() + "'.");
return nullptr;
} else if (document->GetSecurityOrigin()->IsLocal()) {
UseCounter::Count(document, WebFeature::kFileAccessedSharedWorker);
}
KURL script_url = ResolveURL(context, url, exception_state,
WebURLRequest::kRequestContextSharedWorker);
if (script_url.IsEmpty())
return nullptr;
if (document->GetFrame()->Client()->GetSharedWorkerRepositoryClient()) {
document->GetFrame()->Client()->GetSharedWorkerRepositoryClient()->Connect(
worker, std::move(remote_port), script_url, name);
}
return worker;
}
SharedWorker::~SharedWorker() = default;
const AtomicString& SharedWorker::InterfaceName() const {
return EventTargetNames::SharedWorker;
}
bool SharedWorker::HasPendingActivity() const {
return is_being_connected_;
}
void SharedWorker::Trace(blink::Visitor* visitor) {
visitor->Trace(port_);
AbstractWorker::Trace(visitor);
Supplementable<SharedWorker>::Trace(visitor);
}
} // namespace blink
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