dom/permission/StorageAccessPermissionStatus.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "mozilla/dom/StorageAccessPermissionStatus.h"
   8
   9 #include "mozilla/AntiTrackingUtils.h"
  10 #include "mozilla/dom/WindowGlobalChild.h"
  11 #include "mozilla/dom/BrowsingContext.h"
  12 #include "mozilla/dom/FeaturePolicyUtils.h"
  13 #include "mozilla/dom/PermissionStatus.h"
  14 #include "mozilla/dom/PermissionStatusBinding.h"
  15 #include "nsIPermissionManager.h"
  16
  17 namespace mozilla::dom {
  18
  19 // static
  20 RefPtr<PermissionStatus::CreatePromise> StorageAccessPermissionStatus::Create(
  21     nsPIDOMWindowInner* aWindow) {
  22   RefPtr<PermissionStatus> status = new StorageAccessPermissionStatus(aWindow);
  23   return status->Init()->Then(
  24       GetMainThreadSerialEventTarget(), __func__,
  25       [status](nsresult aOk) {
  26         MOZ_ASSERT(NS_SUCCEEDED(aOk));
  27         return MozPromise<RefPtr<PermissionStatus>, nsresult,
  28                           true>::CreateAndResolve(status, __func__);
  29       },
  30       [](nsresult aError) {
  31         MOZ_ASSERT(NS_FAILED(aError));
  32         return MozPromise<RefPtr<PermissionStatus>, nsresult,
  33                           true>::CreateAndReject(aError, __func__);
  34       });
  35 }
  36
  37 StorageAccessPermissionStatus::StorageAccessPermissionStatus(
  38     nsPIDOMWindowInner* aWindow)
  39     : PermissionStatus(aWindow, PermissionName::Storage_access) {}
  40
  41 RefPtr<PermissionStatus::SimplePromise>
  42 StorageAccessPermissionStatus::UpdateState() {
  43   nsCOMPtr<nsPIDOMWindowInner> window = GetOwner();
  44   if (NS_WARN_IF(!window)) {
  45     return SimplePromise::CreateAndReject(NS_ERROR_FAILURE, __func__);
  46   }
  47
  48   WindowGlobalChild* wgc = window->GetWindowGlobalChild();
  49   if (NS_WARN_IF(!wgc)) {
  50     return SimplePromise::CreateAndReject(NS_ERROR_FAILURE, __func__);
  51   }
  52
  53   // Perform a Permission Policy Request
  54   if (!FeaturePolicyUtils::IsFeatureAllowed(window->GetExtantDoc(),
  55                                             u"storage-access"_ns)) {
  56     mState = PermissionState::Prompt;
  57     return SimplePromise::CreateAndResolve(NS_OK, __func__);
  58   }
  59
  60   RefPtr<StorageAccessPermissionStatus> self(this);
  61   return wgc->SendGetStorageAccessPermission()->Then(
  62       GetMainThreadSerialEventTarget(), __func__,
  63       [self](uint32_t aAction) {
  64         if (aAction == nsIPermissionManager::ALLOW_ACTION) {
  65           self->mState = PermissionState::Granted;
  66         } else {
  67           // We never reveal PermissionState::Denied here
  68           self->mState = PermissionState::Prompt;
  69         }
  70         return SimplePromise::CreateAndResolve(NS_OK, __func__);
  71       },
  72       [](mozilla::ipc::ResponseRejectReason aError) {
  73         return SimplePromise::CreateAndResolve(NS_ERROR_FAILURE, __func__);
  74       });
  75 }
  76
  77 bool StorageAccessPermissionStatus::MaybeUpdatedBy(
  78     nsIPermission* aPermission) const {
  79   return false;
  80 }
  81
  82 bool StorageAccessPermissionStatus::MaybeUpdatedByNotifyOnly(
  83     nsPIDOMWindowInner* aInnerWindow) const {
  84   nsPIDOMWindowInner* owner = GetOwner();
  85   NS_ENSURE_TRUE(owner, false);
  86   NS_ENSURE_TRUE(aInnerWindow, false);
  87   return owner->WindowID() == aInnerWindow->WindowID();
  88 }
  89
  90 }  // namespace mozilla::dom