| // Copyright 2017 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 "content/browser/service_worker/service_worker_script_loader_factory.h" |
| |
| #include <memory> |
| #include "content/browser/service_worker/service_worker_context_core.h" |
| #include "content/browser/service_worker/service_worker_installed_script_loader.h" |
| #include "content/browser/service_worker/service_worker_new_script_loader.h" |
| #include "content/browser/service_worker/service_worker_provider_host.h" |
| #include "content/browser/service_worker/service_worker_version.h" |
| #include "mojo/public/cpp/bindings/strong_binding.h" |
| #include "services/network/public/cpp/resource_response.h" |
| #include "services/network/public/cpp/shared_url_loader_factory.h" |
| #include "third_party/blink/public/common/service_worker/service_worker_utils.h" |
| |
| namespace content { |
| |
| ServiceWorkerScriptLoaderFactory::ServiceWorkerScriptLoaderFactory( |
| base::WeakPtr<ServiceWorkerContextCore> context, |
| base::WeakPtr<ServiceWorkerProviderHost> provider_host, |
| scoped_refptr<network::SharedURLLoaderFactory> loader_factory) |
| : context_(context), |
| provider_host_(provider_host), |
| loader_factory_(std::move(loader_factory)) { |
| DCHECK(provider_host_->IsProviderForServiceWorker()); |
| DCHECK(loader_factory_); |
| } |
| |
| ServiceWorkerScriptLoaderFactory::~ServiceWorkerScriptLoaderFactory() = default; |
| |
| void ServiceWorkerScriptLoaderFactory::CreateLoaderAndStart( |
| network::mojom::URLLoaderRequest request, |
| int32_t routing_id, |
| int32_t request_id, |
| uint32_t options, |
| const network::ResourceRequest& resource_request, |
| network::mojom::URLLoaderClientPtr client, |
| const net::MutableNetworkTrafficAnnotationTag& traffic_annotation) { |
| DCHECK(blink::ServiceWorkerUtils::IsServicificationEnabled()); |
| if (!CheckIfScriptRequestIsValid(resource_request)) { |
| // TODO(kinuko): Record the reason like what we do with netlog in |
| // ServiceWorkerContextRequestHandler. |
| client->OnComplete(network::URLLoaderCompletionStatus(net::ERR_ABORTED)); |
| return; |
| } |
| |
| // There are four cases of how to handle the request for the script. |
| // A) service worker is installed, script is installed: serve from storage |
| // (use ServceWorkerInstalledScriptLoader). Typically this case is handled |
| // by ServiceWorkerInstalledScriptsSender, but we can still get here when a |
| // new service worker starts up and becomes installed while it is running. |
| // B) service worker is installed, script is not installed: serve from direct |
| // network. This happens when the script is newly imported after |
| // installation. |
| // TODO(crbug.com/719052): deprecate this. |
| // C) service worker is not installed, script is installed: serve from |
| // storage (use ServceWorkerInstalledScriptLoader) |
| // D) service worker is not installed, script is not installed: serve from |
| // network with installing the script (use ServceWorkerNewScriptLoader) |
| // This is the common case: load the script and install it. |
| |
| // Case A and C: |
| scoped_refptr<ServiceWorkerVersion> version = |
| provider_host_->running_hosted_version(); |
| int64_t resource_id = |
| version->script_cache_map()->LookupResourceId(resource_request.url); |
| if (resource_id != kInvalidServiceWorkerResourceId) { |
| std::unique_ptr<ServiceWorkerResponseReader> response_reader = |
| context_->storage()->CreateResponseReader(resource_id); |
| mojo::MakeStrongBinding( |
| std::make_unique<ServiceWorkerInstalledScriptLoader>( |
| options, std::move(client), std::move(response_reader)), |
| std::move(request)); |
| return; |
| } |
| |
| // Case B: |
| if (ServiceWorkerVersion::IsInstalled(version->status())) { |
| // TODO(kinuko): Record the reason like what we do with netlog in |
| // ServiceWorkerContextRequestHandler. |
| loader_factory_->CreateLoaderAndStart( |
| std::move(request), routing_id, request_id, options, resource_request, |
| std::move(client), traffic_annotation); |
| return; |
| } |
| |
| // Case D: |
| mojo::MakeStrongBinding( |
| std::make_unique<ServiceWorkerNewScriptLoader>( |
| routing_id, request_id, options, resource_request, std::move(client), |
| provider_host_->running_hosted_version(), loader_factory_, |
| traffic_annotation), |
| std::move(request)); |
| } |
| |
| void ServiceWorkerScriptLoaderFactory::Clone( |
| network::mojom::URLLoaderFactoryRequest request) { |
| bindings_.AddBinding(this, std::move(request)); |
| } |
| |
| bool ServiceWorkerScriptLoaderFactory::CheckIfScriptRequestIsValid( |
| const network::ResourceRequest& resource_request) { |
| if (!context_ || !provider_host_) |
| return false; |
| |
| scoped_refptr<ServiceWorkerVersion> version = |
| provider_host_->running_hosted_version(); |
| if (!version) |
| return false; |
| |
| // Handle only the service worker main script (RESOURCE_TYPE_SERVICE_WORKER) |
| // or importScripts() (RESOURCE_TYPE_SCRIPT). |
| if (resource_request.resource_type != RESOURCE_TYPE_SERVICE_WORKER && |
| resource_request.resource_type != RESOURCE_TYPE_SCRIPT) { |
| mojo::ReportBadMessage("SWSLF_BAD_RESOURCE_TYPE"); |
| return false; |
| } |
| |
| if (version->status() == ServiceWorkerVersion::REDUNDANT) { |
| // This could happen if browser-side has set the status to redundant but |
| // the worker has not yet stopped. The worker is already doomed so just |
| // reject the request. Handle it specially here because otherwise it'd |
| // be unclear whether "REDUNDANT" should count as installed or not |
| // installed when making decisions about how to handle the request and |
| // logging UMA. |
| return false; |
| } |
| |
| // TODO(falken): Make sure we don't handle a redirected request. |
| |
| return true; |
| } |
| |
| } // namespace content |