src/content/browser/quota_dispatcher_host.cc

   1 // Copyright 2013 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/quota_dispatcher_host.h"
   6
   7 #include "base/bind.h"
   8 #include "base/memory/weak_ptr.h"
   9 #include "base/numerics/safe_conversions.h"
  10 #include "content/common/quota_messages.h"
  11 #include "content/public/browser/quota_permission_context.h"
  12 #include "net/base/net_util.h"
  13 #include "url/gurl.h"
  14 #include "webkit/browser/quota/quota_manager.h"
  15
  16 using quota::QuotaClient;
  17 using quota::QuotaManager;
  18 using quota::QuotaStatusCode;
  19 using quota::StorageType;
  20
  21 namespace content {
  22
  23 // Created one per request to carry the request's request_id around.
  24 // Dispatches requests from renderer/worker to the QuotaManager and
  25 // sends back the response to the renderer/worker.
  26 class QuotaDispatcherHost::RequestDispatcher {
  27  public:
  28   RequestDispatcher(base::WeakPtr<QuotaDispatcherHost> dispatcher_host,
  29                     int request_id)
  30       : dispatcher_host_(dispatcher_host),
  31         render_process_id_(dispatcher_host->process_id_),
  32         request_id_(request_id) {
  33     dispatcher_host_->outstanding_requests_.AddWithID(this, request_id_);
  34   }
  35   virtual ~RequestDispatcher() {}
  36
  37  protected:
  38   // Subclass must call this when it's done with the request.
  39   void Completed() {
  40     if (dispatcher_host_)
  41       dispatcher_host_->outstanding_requests_.Remove(request_id_);
  42   }
  43
  44   QuotaDispatcherHost* dispatcher_host() const {
  45     return dispatcher_host_.get();
  46   }
  47   quota::QuotaManager* quota_manager() const {
  48     return dispatcher_host_ ? dispatcher_host_->quota_manager_ : NULL;
  49   }
  50   QuotaPermissionContext* permission_context() const {
  51     return dispatcher_host_ ?
  52         dispatcher_host_->permission_context_.get() : NULL;
  53   }
  54   int render_process_id() const { return render_process_id_; }
  55   int request_id() const { return request_id_; }
  56
  57  private:
  58   base::WeakPtr<QuotaDispatcherHost> dispatcher_host_;
  59   int render_process_id_;
  60   int request_id_;
  61 };
  62
  63 class QuotaDispatcherHost::QueryUsageAndQuotaDispatcher
  64     : public RequestDispatcher {
  65  public:
  66   QueryUsageAndQuotaDispatcher(
  67       base::WeakPtr<QuotaDispatcherHost> dispatcher_host,
  68       int request_id)
  69       : RequestDispatcher(dispatcher_host, request_id),
  70         weak_factory_(this) {}
  71   virtual ~QueryUsageAndQuotaDispatcher() {}
  72
  73   void QueryStorageUsageAndQuota(const GURL& origin, StorageType type) {
  74     quota_manager()->GetUsageAndQuotaForWebApps(
  75         origin, type,
  76         base::Bind(&QueryUsageAndQuotaDispatcher::DidQueryStorageUsageAndQuota,
  77                    weak_factory_.GetWeakPtr()));
  78   }
  79
  80  private:
  81   void DidQueryStorageUsageAndQuota(
  82       QuotaStatusCode status, int64 usage, int64 quota) {
  83     if (!dispatcher_host())
  84       return;
  85     if (status != quota::kQuotaStatusOk) {
  86       dispatcher_host()->Send(new QuotaMsg_DidFail(request_id(), status));
  87     } else {
  88       dispatcher_host()->Send(new QuotaMsg_DidQueryStorageUsageAndQuota(
  89           request_id(), usage, quota));
  90     }
  91     Completed();
  92   }
  93
  94   base::WeakPtrFactory<QueryUsageAndQuotaDispatcher> weak_factory_;
  95 };
  96
  97 class QuotaDispatcherHost::RequestQuotaDispatcher
  98     : public RequestDispatcher {
  99  public:
 100   typedef RequestQuotaDispatcher self_type;
 101
 102   RequestQuotaDispatcher(base::WeakPtr<QuotaDispatcherHost> dispatcher_host,
 103                          int request_id,
 104                          const GURL& origin,
 105                          StorageType type,
 106                          uint64 requested_quota,
 107                          int render_view_id)
 108       : RequestDispatcher(dispatcher_host, request_id),
 109         origin_(origin),
 110         type_(type),
 111         current_usage_(0),
 112         current_quota_(0),
 113         requested_quota_(0),
 114         render_view_id_(render_view_id),
 115         weak_factory_(this) {
 116     // Convert the requested size from uint64 to int64 since the quota backend
 117     // requires int64 values.
 118     // TODO(nhiroki): The backend should accept uint64 values.
 119     requested_quota_ = base::saturated_cast<int64>(requested_quota);
 120   }
 121   virtual ~RequestQuotaDispatcher() {}
 122
 123   void Start() {
 124     DCHECK(dispatcher_host());
 125
 126     DCHECK(type_ == quota::kStorageTypeTemporary ||
 127            type_ == quota::kStorageTypePersistent ||
 128            type_ == quota::kStorageTypeSyncable);
 129     if (type_ == quota::kStorageTypePersistent) {
 130       quota_manager()->GetUsageAndQuotaForWebApps(
 131           origin_, type_,
 132           base::Bind(&self_type::DidGetPersistentUsageAndQuota,
 133                      weak_factory_.GetWeakPtr()));
 134     } else {
 135       quota_manager()->GetUsageAndQuotaForWebApps(
 136           origin_, type_,
 137           base::Bind(&self_type::DidGetTemporaryUsageAndQuota,
 138                      weak_factory_.GetWeakPtr()));
 139     }
 140   }
 141
 142  private:
 143   void DidGetPersistentUsageAndQuota(QuotaStatusCode status,
 144                                      int64 usage,
 145                                      int64 quota) {
 146     if (!dispatcher_host())
 147       return;
 148     if (status != quota::kQuotaStatusOk) {
 149       DidFinish(status, 0, 0);
 150       return;
 151     }
 152
 153     if (quota_manager()->IsStorageUnlimited(origin_, type_) ||
 154         requested_quota_ <= quota) {
 155       // Seems like we can just let it go.
 156       DidFinish(quota::kQuotaStatusOk, usage, requested_quota_);
 157       return;
 158     }
 159     current_usage_ = usage;
 160     current_quota_ = quota;
 161
 162     // Otherwise we need to consult with the permission context and
 163     // possibly show an infobar.
 164     DCHECK(permission_context());
 165     permission_context()->RequestQuotaPermission(
 166         origin_, type_, requested_quota_, render_process_id(), render_view_id_,
 167         base::Bind(&self_type::DidGetPermissionResponse,
 168                    weak_factory_.GetWeakPtr()));
 169   }
 170
 171   void DidGetTemporaryUsageAndQuota(QuotaStatusCode status,
 172                                     int64 usage,
 173                                     int64 quota) {
 174     DidFinish(status, usage, std::min(requested_quota_, quota));
 175   }
 176
 177   void DidGetPermissionResponse(
 178       QuotaPermissionContext::QuotaPermissionResponse response) {
 179     if (!dispatcher_host())
 180       return;
 181     if (response != QuotaPermissionContext::QUOTA_PERMISSION_RESPONSE_ALLOW) {
 182       // User didn't allow the new quota.  Just returning the current quota.
 183       DidFinish(quota::kQuotaStatusOk, current_usage_, current_quota_);
 184       return;
 185     }
 186     // Now we're allowed to set the new quota.
 187     quota_manager()->SetPersistentHostQuota(
 188         net::GetHostOrSpecFromURL(origin_), requested_quota_,
 189         base::Bind(&self_type::DidSetHostQuota, weak_factory_.GetWeakPtr()));
 190   }
 191
 192   void DidSetHostQuota(QuotaStatusCode status, int64 new_quota) {
 193     DidFinish(status, current_usage_, new_quota);
 194   }
 195
 196   void DidFinish(QuotaStatusCode status,
 197                  int64 usage,
 198                  int64 granted_quota) {
 199     if (!dispatcher_host())
 200       return;
 201     DCHECK(dispatcher_host());
 202     if (status != quota::kQuotaStatusOk) {
 203       dispatcher_host()->Send(new QuotaMsg_DidFail(request_id(), status));
 204     } else {
 205       dispatcher_host()->Send(new QuotaMsg_DidGrantStorageQuota(
 206           request_id(), usage, granted_quota));
 207     }
 208     Completed();
 209   }
 210
 211   const GURL origin_;
 212   const StorageType type_;
 213   int64 current_usage_;
 214   int64 current_quota_;
 215   int64 requested_quota_;
 216   const int render_view_id_;
 217   base::WeakPtrFactory<self_type> weak_factory_;
 218 };
 219
 220 QuotaDispatcherHost::QuotaDispatcherHost(
 221     int process_id,
 222     QuotaManager* quota_manager,
 223     QuotaPermissionContext* permission_context)
 224     : process_id_(process_id),
 225       quota_manager_(quota_manager),
 226       permission_context_(permission_context),
 227       weak_factory_(this) {
 228 }
 229
 230 bool QuotaDispatcherHost::OnMessageReceived(
 231     const IPC::Message& message, bool* message_was_ok) {
 232   *message_was_ok = true;
 233   bool handled = true;
 234   IPC_BEGIN_MESSAGE_MAP_EX(QuotaDispatcherHost, message, *message_was_ok)
 235     IPC_MESSAGE_HANDLER(QuotaHostMsg_QueryStorageUsageAndQuota,
 236                         OnQueryStorageUsageAndQuota)
 237     IPC_MESSAGE_HANDLER(QuotaHostMsg_RequestStorageQuota,
 238                         OnRequestStorageQuota)
 239     IPC_MESSAGE_UNHANDLED(handled = false)
 240   IPC_END_MESSAGE_MAP_EX()
 241   return handled;
 242 }
 243
 244 QuotaDispatcherHost::~QuotaDispatcherHost() {}
 245
 246 void QuotaDispatcherHost::OnQueryStorageUsageAndQuota(
 247     int request_id,
 248     const GURL& origin,
 249     StorageType type) {
 250   QueryUsageAndQuotaDispatcher* dispatcher = new QueryUsageAndQuotaDispatcher(
 251       weak_factory_.GetWeakPtr(), request_id);
 252   dispatcher->QueryStorageUsageAndQuota(origin, type);
 253 }
 254
 255 void QuotaDispatcherHost::OnRequestStorageQuota(
 256     int render_view_id,
 257     int request_id,
 258     const GURL& origin,
 259     StorageType type,
 260     uint64 requested_size) {
 261   if (type != quota::kStorageTypeTemporary &&
 262       type != quota::kStorageTypePersistent) {
 263     // Unsupported storage types.
 264     Send(new QuotaMsg_DidFail(request_id, quota::kQuotaErrorNotSupported));
 265     return;
 266   }
 267
 268   RequestQuotaDispatcher* dispatcher = new RequestQuotaDispatcher(
 269       weak_factory_.GetWeakPtr(), request_id, origin, type,
 270       requested_size, render_view_id);
 271   dispatcher->Start();
 272 }
 273
 274 }  // namespace content