File: ServiceWorkerLinkResource.cpp

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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "modules/serviceworkers/ServiceWorkerLinkResource.h"

#include "bindings/core/v8/ExceptionState.h"
#include "core/dom/Document.h"
#include "core/frame/DOMWindow.h"
#include "core/frame/LocalFrame.h"
#include "core/html/HTMLLinkElement.h"
#include "core/inspector/ConsoleMessage.h"
#include "core/loader/FrameLoaderClient.h"
#include "modules/serviceworkers/NavigatorServiceWorker.h"
#include "modules/serviceworkers/ServiceWorkerContainer.h"
#include "public/platform/Platform.h"
#include "public/platform/WebScheduler.h"
#include "wtf/PtrUtil.h"

namespace blink {

namespace {

class RegistrationCallback
    : public WebServiceWorkerProvider::WebServiceWorkerRegistrationCallbacks {
 public:
  explicit RegistrationCallback(LinkLoaderClient* client) : m_client(client) {}
  ~RegistrationCallback() override {}

  void onSuccess(
      std::unique_ptr<WebServiceWorkerRegistration::Handle> handle) override {
    Platform::current()
        ->currentThread()
        ->scheduler()
        ->timerTaskRunner()
        ->postTask(BLINK_FROM_HERE,
                   WTF::bind(&LinkLoaderClient::linkLoaded, m_client));
  }

  void onError(const WebServiceWorkerError& error) override {
    Platform::current()
        ->currentThread()
        ->scheduler()
        ->timerTaskRunner()
        ->postTask(BLINK_FROM_HERE,
                   WTF::bind(&LinkLoaderClient::linkLoadingErrored, m_client));
  }

 private:
  WTF_MAKE_NONCOPYABLE(RegistrationCallback);

  Persistent<LinkLoaderClient> m_client;
};
}

ServiceWorkerLinkResource* ServiceWorkerLinkResource::create(
    HTMLLinkElement* owner) {
  return new ServiceWorkerLinkResource(owner);
}

ServiceWorkerLinkResource::~ServiceWorkerLinkResource() {}

void ServiceWorkerLinkResource::process() {
  if (!m_owner || !m_owner->document().frame())
    return;

  if (!m_owner->shouldLoadLink())
    return;

  Document& document = m_owner->document();

  KURL scriptURL = m_owner->href();

  String scope = m_owner->scope();
  KURL scopeURL;
  if (scope.isNull())
    scopeURL = KURL(scriptURL, "./");
  else
    scopeURL = document.completeURL(scope);
  scopeURL.removeFragmentIdentifier();

  String errorMessage;
  ServiceWorkerContainer* container = NavigatorServiceWorker::serviceWorker(
      &document, *document.frame()->domWindow()->navigator(), errorMessage);

  if (!container) {
    document.addConsoleMessage(ConsoleMessage::create(
        JSMessageSource, ErrorMessageLevel,
        "Cannot register service worker with <link> element. " + errorMessage));
    WTF::makeUnique<RegistrationCallback>(m_owner)->onError(
        WebServiceWorkerError(WebServiceWorkerError::ErrorTypeSecurity,
                              errorMessage));
    return;
  }

  container->registerServiceWorkerImpl(
      &document, scriptURL, scopeURL,
      WTF::makeUnique<RegistrationCallback>(m_owner));
}

bool ServiceWorkerLinkResource::hasLoaded() const {
  return false;
}

void ServiceWorkerLinkResource::ownerRemoved() {
  process();
}

ServiceWorkerLinkResource::ServiceWorkerLinkResource(HTMLLinkElement* owner)
    : LinkResource(owner) {}

}  // namespace blink