widget/ClipboardWriteRequestParent.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "mozilla/ClipboardWriteRequestParent.h"
   7
   8 #include "mozilla/dom/ContentParent.h"
   9 #include "mozilla/net/CookieJarSettings.h"
  10 #include "nsComponentManagerUtils.h"
  11 #include "nsIClipboard.h"
  12 #include "nsITransferable.h"
  13 #include "nsWidgetsCID.h"
  14
  15 static NS_DEFINE_CID(kCClipboardCID, NS_CLIPBOARD_CID);
  16
  17 using mozilla::dom::ContentParent;
  18 using mozilla::ipc::IPCResult;
  19
  20 namespace mozilla {
  21
  22 NS_IMPL_ISUPPORTS(ClipboardWriteRequestParent, nsIAsyncClipboardRequestCallback)
  23
  24 ClipboardWriteRequestParent::ClipboardWriteRequestParent(
  25     ContentParent* aManager)
  26     : mManager(aManager) {}
  27
  28 ClipboardWriteRequestParent::~ClipboardWriteRequestParent() = default;
  29
  30 nsresult ClipboardWriteRequestParent::Init(const int32_t& aClipboardType) {
  31   nsCOMPtr<nsIClipboard> clipboard(do_GetService(kCClipboardCID));
  32   if (!clipboard) {
  33     Unused << PClipboardWriteRequestParent::Send__delete__(this,
  34                                                            NS_ERROR_FAILURE);
  35     return NS_ERROR_FAILURE;
  36   }
  37
  38   nsresult rv = clipboard->AsyncSetData(aClipboardType, this,
  39                                         getter_AddRefs(mAsyncSetClipboardData));
  40   if (NS_FAILED(rv)) {
  41     Unused << PClipboardWriteRequestParent::Send__delete__(this, rv);
  42     return rv;
  43   }
  44
  45   return NS_OK;
  46 }
  47
  48 NS_IMETHODIMP ClipboardWriteRequestParent::OnComplete(nsresult aResult) {
  49   nsCOMPtr<nsIAsyncSetClipboardData> clipboardData =
  50       std::move(mAsyncSetClipboardData);
  51   if (clipboardData) {
  52     Unused << PClipboardWriteRequestParent::Send__delete__(this, aResult);
  53   }
  54   return NS_OK;
  55 }
  56
  57 IPCResult ClipboardWriteRequestParent::RecvSetData(
  58     const IPCTransferable& aTransferable) {
  59   if (!mManager->ValidatePrincipal(
  60           aTransferable.requestingPrincipal(),
  61           {ContentParent::ValidatePrincipalOptions::AllowNullPtr,
  62            ContentParent::ValidatePrincipalOptions::AllowExpanded,
  63            ContentParent::ValidatePrincipalOptions::AllowSystem})) {
  64     ContentParent::LogAndAssertFailedPrincipalValidationInfo(
  65         aTransferable.requestingPrincipal(), __func__);
  66   }
  67
  68   if (!mAsyncSetClipboardData) {
  69     return IPC_OK();
  70   }
  71
  72   nsresult rv = NS_ERROR_FAILURE;
  73   nsCOMPtr<nsITransferable> trans =
  74       do_CreateInstance("@mozilla.org/widget/transferable;1", &rv);
  75   if (NS_FAILED(rv)) {
  76     mAsyncSetClipboardData->Abort(rv);
  77     return IPC_OK();
  78   }
  79
  80   trans->Init(nullptr);
  81   rv = nsContentUtils::IPCTransferableToTransferable(
  82       aTransferable, true /* aAddDataFlavor */, trans,
  83       true /* aFilterUnknownFlavors */);
  84   if (NS_FAILED(rv)) {
  85     mAsyncSetClipboardData->Abort(rv);
  86     return IPC_OK();
  87   }
  88
  89   mAsyncSetClipboardData->SetData(trans, nullptr);
  90   return IPC_OK();
  91 }
  92
  93 IPCResult ClipboardWriteRequestParent::Recv__delete__(nsresult aReason) {
  94 #ifndef FUZZING_SNAPSHOT
  95   MOZ_DIAGNOSTIC_ASSERT(NS_FAILED(aReason));
  96 #endif
  97   nsCOMPtr<nsIAsyncSetClipboardData> clipboardData =
  98       std::move(mAsyncSetClipboardData);
  99   if (clipboardData) {
 100     clipboardData->Abort(aReason);
 101   }
 102   return IPC_OK();
 103 }
 104
 105 void ClipboardWriteRequestParent::ActorDestroy(ActorDestroyReason aReason) {
 106   nsCOMPtr<nsIAsyncSetClipboardData> clipboardData =
 107       std::move(mAsyncSetClipboardData);
 108   if (clipboardData) {
 109     clipboardData->Abort(NS_ERROR_ABORT);
 110   }
 111 }
 112
 113 }  // namespace mozilla