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