dom/cache/CacheStorageParent.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/cache/CacheStorageParent.h"
   8
   9 #include "mozilla/Unused.h"
  10 #include "mozilla/dom/cache/ActorUtils.h"
  11 #include "mozilla/dom/cache/CacheOpParent.h"
  12 #include "mozilla/dom/cache/ManagerId.h"
  13 #include "mozilla/dom/quota/QuotaManager.h"
  14 #include "mozilla/ipc/PBackgroundParent.h"
  15
  16 namespace mozilla::dom::cache {
  17
  18 using mozilla::dom::quota::QuotaManager;
  19 using mozilla::ipc::PBackgroundParent;
  20 using mozilla::ipc::PrincipalInfo;
  21
  22 // declared in ActorUtils.h
  23 already_AddRefed<PCacheStorageParent> AllocPCacheStorageParent(
  24     PBackgroundParent* aManagingActor, Namespace aNamespace,
  25     const mozilla::ipc::PrincipalInfo& aPrincipalInfo) {
  26   if (NS_WARN_IF(!QuotaManager::IsPrincipalInfoValid(aPrincipalInfo))) {
  27     MOZ_ASSERT(false);
  28     return nullptr;
  29   }
  30
  31   return MakeAndAddRef<CacheStorageParent>(aManagingActor, aNamespace,
  32                                            aPrincipalInfo);
  33 }
  34
  35 // declared in ActorUtils.h
  36 void DeallocPCacheStorageParent(PCacheStorageParent* aActor) { delete aActor; }
  37
  38 CacheStorageParent::CacheStorageParent(PBackgroundParent* aManagingActor,
  39                                        Namespace aNamespace,
  40                                        const PrincipalInfo& aPrincipalInfo)
  41     : mNamespace(aNamespace), mVerifiedStatus(NS_OK) {
  42   MOZ_COUNT_CTOR(cache::CacheStorageParent);
  43   MOZ_DIAGNOSTIC_ASSERT(aManagingActor);
  44
  45   // Start the async principal verification process immediately.
  46   mVerifier = PrincipalVerifier::CreateAndDispatch(*this, aManagingActor,
  47                                                    aPrincipalInfo);
  48   MOZ_DIAGNOSTIC_ASSERT(mVerifier);
  49 }
  50
  51 CacheStorageParent::~CacheStorageParent() {
  52   MOZ_COUNT_DTOR(cache::CacheStorageParent);
  53   MOZ_DIAGNOSTIC_ASSERT(!mVerifier);
  54 }
  55
  56 void CacheStorageParent::ActorDestroy(ActorDestroyReason aReason) {
  57   if (mVerifier) {
  58     mVerifier->RemoveListener(*this);
  59     mVerifier = nullptr;
  60   }
  61 }
  62
  63 PCacheOpParent* CacheStorageParent::AllocPCacheOpParent(
  64     const CacheOpArgs& aOpArgs) {
  65   if (aOpArgs.type() != CacheOpArgs::TStorageMatchArgs &&
  66       aOpArgs.type() != CacheOpArgs::TStorageHasArgs &&
  67       aOpArgs.type() != CacheOpArgs::TStorageOpenArgs &&
  68       aOpArgs.type() != CacheOpArgs::TStorageDeleteArgs &&
  69       aOpArgs.type() != CacheOpArgs::TStorageKeysArgs) {
  70     MOZ_CRASH("Invalid operation sent to CacheStorage actor!");
  71   }
  72
  73   return new CacheOpParent(Manager(), mNamespace, aOpArgs);
  74 }
  75
  76 bool CacheStorageParent::DeallocPCacheOpParent(PCacheOpParent* aActor) {
  77   delete aActor;
  78   return true;
  79 }
  80
  81 mozilla::ipc::IPCResult CacheStorageParent::RecvPCacheOpConstructor(
  82     PCacheOpParent* aActor, const CacheOpArgs& aOpArgs) {
  83   auto actor = static_cast<CacheOpParent*>(aActor);
  84
  85   if (mVerifier) {
  86     MOZ_DIAGNOSTIC_ASSERT(!mManagerId);
  87     actor->WaitForVerification(mVerifier);
  88     return IPC_OK();
  89   }
  90
  91   if (NS_WARN_IF(NS_FAILED(mVerifiedStatus))) {
  92     ErrorResult result(mVerifiedStatus);
  93
  94     QM_WARNONLY_TRY(OkIf(
  95         CacheOpParent::Send__delete__(actor, std::move(result), void_t())));
  96     return IPC_OK();
  97   }
  98
  99   MOZ_DIAGNOSTIC_ASSERT(mManagerId);
 100   actor->Execute(mManagerId);
 101   return IPC_OK();
 102 }
 103
 104 mozilla::ipc::IPCResult CacheStorageParent::RecvTeardown() {
 105   // If child process is gone, warn and allow actor to clean up normally
 106   QM_WARNONLY_TRY(OkIf(Send__delete__(this)));
 107   return IPC_OK();
 108 }
 109
 110 void CacheStorageParent::OnPrincipalVerified(
 111     nsresult aRv, const SafeRefPtr<ManagerId>& aManagerId) {
 112   MOZ_DIAGNOSTIC_ASSERT(mVerifier);
 113   MOZ_DIAGNOSTIC_ASSERT(!mManagerId);
 114   MOZ_DIAGNOSTIC_ASSERT(NS_SUCCEEDED(mVerifiedStatus));
 115
 116   if (NS_WARN_IF(NS_FAILED(aRv))) {
 117     mVerifiedStatus = aRv;
 118   }
 119
 120   mManagerId = aManagerId.clonePtr();
 121   mVerifier->RemoveListener(*this);
 122   mVerifier = nullptr;
 123 }
 124
 125 }  // namespace mozilla::dom::cache