src/content/browser/resource_context_impl.cc

   1 // Copyright (c) 2012 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/resource_context_impl.h"
   6
   7 #include "base/logging.h"
   8 #include "content/browser/fileapi/chrome_blob_storage_context.h"
   9 #include "content/browser/host_zoom_map_impl.h"
  10 #include "content/browser/loader/resource_dispatcher_host_impl.h"
  11 #include "content/browser/loader/resource_request_info_impl.h"
  12 #include "content/browser/streams/stream_context.h"
  13 #include "content/browser/webui/url_data_manager_backend.h"
  14 #include "content/public/browser/browser_context.h"
  15 #include "content/public/browser/browser_thread.h"
  16 #include "net/base/keygen_handler.h"
  17 #include "net/ssl/client_cert_store.h"
  18
  19 using base::UserDataAdapter;
  20
  21 namespace content {
  22
  23 namespace {
  24
  25 // Key names on ResourceContext.
  26 const char kBlobStorageContextKeyName[] = "content_blob_storage_context";
  27 const char kHostZoomMapKeyName[] = "content_host_zoom_map";
  28 const char kStreamContextKeyName[] = "content_stream_context";
  29 const char kURLDataManagerBackendKeyName[] = "url_data_manager_backend";
  30
  31 class NonOwningZoomData : public base::SupportsUserData::Data {
  32  public:
  33   explicit NonOwningZoomData(HostZoomMap* hzm) : host_zoom_map_(hzm) {}
  34   HostZoomMap* host_zoom_map() { return host_zoom_map_; }
  35
  36  private:
  37   HostZoomMap* host_zoom_map_;
  38 };
  39
  40 // Used by the default implementation of GetMediaDeviceIDSalt, below.
  41 std::string ReturnEmptySalt() {
  42   return std::string();
  43 }
  44
  45 }  // namespace
  46
  47
  48 ResourceContext::ResourceContext() {
  49   if (ResourceDispatcherHostImpl::Get())
  50     ResourceDispatcherHostImpl::Get()->AddResourceContext(this);
  51 }
  52
  53 ResourceContext::~ResourceContext() {
  54   ResourceDispatcherHostImpl* rdhi = ResourceDispatcherHostImpl::Get();
  55   if (rdhi) {
  56     rdhi->CancelRequestsForContext(this);
  57     rdhi->RemoveResourceContext(this);
  58   }
  59
  60   // In some tests this object is destructed on UI thread.
  61   DetachUserDataThread();
  62 }
  63
  64 ResourceContext::SaltCallback ResourceContext::GetMediaDeviceIDSalt() {
  65   return base::Bind(&ReturnEmptySalt);
  66 }
  67
  68 scoped_ptr<net::ClientCertStore> ResourceContext::CreateClientCertStore() {
  69   return scoped_ptr<net::ClientCertStore>();
  70 }
  71
  72 void ResourceContext::CreateKeygenHandler(
  73     uint32 key_size_in_bits,
  74     const std::string& challenge_string,
  75     const GURL& url,
  76     const base::Callback<void(scoped_ptr<net::KeygenHandler>)>& callback) {
  77   callback.Run(make_scoped_ptr(
  78       new net::KeygenHandler(key_size_in_bits, challenge_string, url)));
  79 }
  80
  81 ChromeBlobStorageContext* GetChromeBlobStorageContextForResourceContext(
  82     ResourceContext* resource_context) {
  83   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
  84   return UserDataAdapter<ChromeBlobStorageContext>::Get(
  85       resource_context, kBlobStorageContextKeyName);
  86 }
  87
  88 StreamContext* GetStreamContextForResourceContext(
  89     ResourceContext* resource_context) {
  90   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
  91   return UserDataAdapter<StreamContext>::Get(
  92       resource_context, kStreamContextKeyName);
  93 }
  94
  95 HostZoomMap* GetHostZoomMapForResourceContext(ResourceContext* context) {
  96   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
  97   return static_cast<NonOwningZoomData*>(
  98       context->GetUserData(kHostZoomMapKeyName))->host_zoom_map();
  99 }
 100
 101 URLDataManagerBackend* GetURLDataManagerForResourceContext(
 102     ResourceContext* context) {
 103   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 104   if (!context->GetUserData(kURLDataManagerBackendKeyName)) {
 105     context->SetUserData(kURLDataManagerBackendKeyName,
 106                          new URLDataManagerBackend());
 107   }
 108   return static_cast<URLDataManagerBackend*>(
 109       context->GetUserData(kURLDataManagerBackendKeyName));
 110 }
 111
 112 void InitializeResourceContext(BrowserContext* browser_context) {
 113   ResourceContext* resource_context = browser_context->GetResourceContext();
 114   DCHECK(!resource_context->GetUserData(kHostZoomMapKeyName));
 115
 116   resource_context->SetUserData(
 117       kBlobStorageContextKeyName,
 118       new UserDataAdapter<ChromeBlobStorageContext>(
 119           ChromeBlobStorageContext::GetFor(browser_context)));
 120
 121   resource_context->SetUserData(
 122       kStreamContextKeyName,
 123       new UserDataAdapter<StreamContext>(
 124           StreamContext::GetFor(browser_context)));
 125
 126   // This object is owned by the BrowserContext and not ResourceContext, so
 127   // store a non-owning pointer here.
 128   resource_context->SetUserData(
 129       kHostZoomMapKeyName,
 130       new NonOwningZoomData(
 131           HostZoomMap::GetForBrowserContext(browser_context)));
 132
 133   resource_context->DetachUserDataThread();
 134 }
 135
 136 }  // namespace content