content/browser/service_worker/service_worker_request_handler.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/browser/service_worker/service_worker_request_handler.h"
   6
   7 #include <string>
   8
   9 #include "content/browser/service_worker/service_worker_context_core.h"
  10 #include "content/browser/service_worker/service_worker_context_wrapper.h"
  11 #include "content/browser/service_worker/service_worker_provider_host.h"
  12 #include "content/browser/service_worker/service_worker_registration.h"
  13 #include "content/browser/service_worker/service_worker_url_request_job.h"
  14 #include "content/browser/service_worker/service_worker_utils.h"
  15 #include "content/common/resource_request_body.h"
  16 #include "content/common/service_worker/service_worker_types.h"
  17 #include "content/public/browser/resource_context.h"
  18 #include "net/base/net_util.h"
  19 #include "net/url_request/url_request.h"
  20 #include "net/url_request/url_request_interceptor.h"
  21 #include "storage/browser/blob/blob_storage_context.h"
  22
  23 namespace content {
  24
  25 namespace {
  26
  27 int kUserDataKey;  // Key value is not important.
  28
  29 class ServiceWorkerRequestInterceptor
  30     : public net::URLRequestInterceptor {
  31  public:
  32   explicit ServiceWorkerRequestInterceptor(ResourceContext* resource_context)
  33       : resource_context_(resource_context) {}
  34   ~ServiceWorkerRequestInterceptor() override {}
  35   net::URLRequestJob* MaybeInterceptRequest(
  36       net::URLRequest* request,
  37       net::NetworkDelegate* network_delegate) const override {
  38     ServiceWorkerRequestHandler* handler =
  39         ServiceWorkerRequestHandler::GetHandler(request);
  40     if (!handler)
  41       return NULL;
  42     return handler->MaybeCreateJob(
  43         request, network_delegate, resource_context_);
  44   }
  45
  46  private:
  47   ResourceContext* resource_context_;
  48   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerRequestInterceptor);
  49 };
  50
  51 // This is work around to avoid hijacking CORS preflight.
  52 // TODO(horo): Remove this check when we implement "HTTP fetch" correctly.
  53 // http://fetch.spec.whatwg.org/#concept-http-fetch
  54 bool IsMethodSupportedForServiceWorker(const std::string& method) {
  55   return method != "OPTIONS";
  56 }
  57
  58 }  // namespace
  59
  60 void ServiceWorkerRequestHandler::InitializeHandler(
  61     net::URLRequest* request,
  62     ServiceWorkerContextWrapper* context_wrapper,
  63     storage::BlobStorageContext* blob_storage_context,
  64     int process_id,
  65     int provider_id,
  66     bool skip_service_worker,
  67     FetchRequestMode request_mode,
  68     FetchCredentialsMode credentials_mode,
  69     ResourceType resource_type,
  70     RequestContextType request_context_type,
  71     RequestContextFrameType frame_type,
  72     scoped_refptr<ResourceRequestBody> body) {
  73   if (!request->url().SchemeIsHTTPOrHTTPS() ||
  74       !IsMethodSupportedForServiceWorker(request->method())) {
  75     return;
  76   }
  77
  78   if (!context_wrapper || !context_wrapper->context() ||
  79       provider_id == kInvalidServiceWorkerProviderId) {
  80     return;
  81   }
  82
  83   ServiceWorkerProviderHost* provider_host =
  84       context_wrapper->context()->GetProviderHost(process_id, provider_id);
  85   if (!provider_host || !provider_host->IsContextAlive())
  86     return;
  87
  88   if (skip_service_worker) {
  89     if (ServiceWorkerUtils::IsMainResourceType(resource_type)) {
  90       provider_host->SetDocumentUrl(net::SimplifyUrlForRequest(request->url()));
  91       provider_host->SetTopmostFrameUrl(request->first_party_for_cookies());
  92     }
  93     return;
  94   }
  95
  96   scoped_ptr<ServiceWorkerRequestHandler> handler(
  97       provider_host->CreateRequestHandler(request_mode,
  98                                           credentials_mode,
  99                                           resource_type,
 100                                           request_context_type,
 101                                           frame_type,
 102                                           blob_storage_context->AsWeakPtr(),
 103                                           body));
 104   if (!handler)
 105     return;
 106
 107   request->SetUserData(&kUserDataKey, handler.release());
 108 }
 109
 110 ServiceWorkerRequestHandler* ServiceWorkerRequestHandler::GetHandler(
 111     net::URLRequest* request) {
 112   return static_cast<ServiceWorkerRequestHandler*>(
 113       request->GetUserData(&kUserDataKey));
 114 }
 115
 116 scoped_ptr<net::URLRequestInterceptor>
 117 ServiceWorkerRequestHandler::CreateInterceptor(
 118     ResourceContext* resource_context) {
 119   return scoped_ptr<net::URLRequestInterceptor>(
 120       new ServiceWorkerRequestInterceptor(resource_context));
 121 }
 122
 123 bool ServiceWorkerRequestHandler::IsControlledByServiceWorker(
 124     net::URLRequest* request) {
 125   ServiceWorkerRequestHandler* handler = GetHandler(request);
 126   if (!handler || !handler->provider_host_)
 127     return false;
 128   return handler->provider_host_->associated_registration() ||
 129          handler->provider_host_->running_hosted_version();
 130 }
 131
 132 ServiceWorkerRequestHandler::~ServiceWorkerRequestHandler() {
 133 }
 134
 135 ServiceWorkerRequestHandler::ServiceWorkerRequestHandler(
 136     base::WeakPtr<ServiceWorkerContextCore> context,
 137     base::WeakPtr<ServiceWorkerProviderHost> provider_host,
 138     base::WeakPtr<storage::BlobStorageContext> blob_storage_context,
 139     ResourceType resource_type)
 140     : context_(context),
 141       provider_host_(provider_host),
 142       blob_storage_context_(blob_storage_context),
 143       resource_type_(resource_type) {
 144 }
 145
 146 }  // namespace content