chrome/browser/web_applications/externally_managed_app_registration_task.cc

// Copyright 2018 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 "chrome/browser/web_applications/externally_managed_app_registration_task.h"

#include "base/callback_helpers.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/web_applications/externally_managed_app_manager.h"
#include "chrome/browser/web_applications/web_app_url_loader.h"
#include "content/public/browser/browser_context.h"
#include "content/public/browser/service_worker_context.h"
#include "content/public/browser/storage_partition.h"
#include "content/public/browser/web_contents.h"
#include "third_party/blink/public/common/storage_key/storage_key.h"
#include "url/origin.h"
#include "url/url_constants.h"

namespace web_app {

ExternallyManagedAppRegistrationTaskBase::
    ExternallyManagedAppRegistrationTaskBase(const GURL& install_url)
    : install_url_(install_url) {}

ExternallyManagedAppRegistrationTaskBase::
    ~ExternallyManagedAppRegistrationTaskBase() = default;

int ExternallyManagedAppRegistrationTask::registration_timeout_in_seconds_ = 40;

ExternallyManagedAppRegistrationTask::ExternallyManagedAppRegistrationTask(
    const GURL& install_url,
    WebAppUrlLoader* url_loader,
    content::WebContents* web_contents,
    RegistrationCallback callback)
    : ExternallyManagedAppRegistrationTaskBase(install_url),
      url_loader_(url_loader),
      web_contents_(web_contents),
      callback_(std::move(callback)) {
  content::StoragePartition* storage_partition =
      web_contents_->GetBrowserContext()->GetStoragePartition(
          web_contents_->GetSiteInstance());
  DCHECK(storage_partition);

  service_worker_context_ = storage_partition->GetServiceWorkerContext();
  service_worker_context_->AddObserver(this);

  registration_timer_.Start(
      FROM_HERE, base::Seconds(registration_timeout_in_seconds_),
      base::BindOnce(
          &ExternallyManagedAppRegistrationTask::OnRegistrationTimeout,
          weak_ptr_factory_.GetWeakPtr()));

  // Check to see if there is already a service worker for the install url.
  service_worker_context_->CheckHasServiceWorker(
      install_url, blink::StorageKey(url::Origin::Create(install_url)),
      base::BindOnce(
          &ExternallyManagedAppRegistrationTask::OnDidCheckHasServiceWorker,
          weak_ptr_factory_.GetWeakPtr()));
}

ExternallyManagedAppRegistrationTask::~ExternallyManagedAppRegistrationTask() {
  if (service_worker_context_)
    service_worker_context_->RemoveObserver(this);
}

void ExternallyManagedAppRegistrationTask::OnRegistrationCompleted(
    const GURL& scope) {
  if (!content::ServiceWorkerContext::ScopeMatches(scope, install_url()))
    return;

  registration_timer_.Stop();
  std::move(callback_).Run(RegistrationResultCode::kSuccess);
}

void ExternallyManagedAppRegistrationTask::OnDestruct(
    content::ServiceWorkerContext* context) {
  service_worker_context_->RemoveObserver(this);
  service_worker_context_ = nullptr;
}

void ExternallyManagedAppRegistrationTask::SetTimeoutForTesting(
    int registration_timeout_in_seconds) {
  registration_timeout_in_seconds_ = registration_timeout_in_seconds;
}

void ExternallyManagedAppRegistrationTask::OnDidCheckHasServiceWorker(
    content::ServiceWorkerCapability capability) {
  if (capability != content::ServiceWorkerCapability::NO_SERVICE_WORKER) {
    registration_timer_.Stop();
    std::move(callback_).Run(RegistrationResultCode::kAlreadyRegistered);
    return;
  }

  url_loader_->PrepareForLoad(
      web_contents_,
      base::BindOnce(&ExternallyManagedAppRegistrationTask::OnWebContentsReady,
                     weak_ptr_factory_.GetWeakPtr()));
}

void ExternallyManagedAppRegistrationTask::OnWebContentsReady(
    WebAppUrlLoader::Result result) {
  // TODO(crbug.com/1098139): Handle the scenario where WebAppUrlLoader fails to
  // load about:blank and flush WebContents states.

  // No action is needed when the URL loads.
  // We wait for OnRegistrationCompleted (or registration timeout).
  url_loader_->LoadUrl(install_url(), web_contents_,
                       WebAppUrlLoader::UrlComparison::kExact,
                       base::DoNothing());
}

void ExternallyManagedAppRegistrationTask::OnRegistrationTimeout() {
  std::move(callback_).Run(RegistrationResultCode::kTimeout);
}

}  // namespace web_app