1 files changed, 373 insertions, 0 deletions
diff --git a/toolkit/components/alerts/AlertNotification.cpp b/toolkit/components/alerts/AlertNotification.cpp
new file mode 100644
index 0000000000..3cc2ec4380
--- /dev/null
+++ b/toolkit/components/alerts/AlertNotification.cpp
@@ -0,0 +1,373 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/AlertNotification.h"
+
+#include "imgIContainer.h"
+#include "imgINotificationObserver.h"
+#include "imgIRequest.h"
+#include "imgLoader.h"
+#include "nsAlertsUtils.h"
+#include "nsComponentManagerUtils.h"
+#include "nsContentUtils.h"
+#include "nsNetUtil.h"
+#include "nsServiceManagerUtils.h"
+
+#include "mozilla/Unused.h"
+
+namespace mozilla {
+
+NS_IMPL_ISUPPORTS(AlertNotification, nsIAlertNotification)
+
+AlertNotification::AlertNotification()
+    : mTextClickable(false), mInPrivateBrowsing(false) {}
+
+AlertNotification::~AlertNotification() = default;
+
+NS_IMETHODIMP
+AlertNotification::Init(const nsAString& aName, const nsAString& aImageURL,
+                        const nsAString& aTitle, const nsAString& aText,
+                        bool aTextClickable, const nsAString& aCookie,
+                        const nsAString& aDir, const nsAString& aLang,
+                        const nsAString& aData, nsIPrincipal* aPrincipal,
+                        bool aInPrivateBrowsing, bool aRequireInteraction,
+                        bool aSilent, const nsTArray<uint32_t>& aVibrate) {
+  mName = aName;
+  mImageURL = aImageURL;
+  mTitle = aTitle;
+  mText = aText;
+  mTextClickable = aTextClickable;
+  mCookie = aCookie;
+  mDir = aDir;
+  mLang = aLang;
+  mData = aData;
+  mPrincipal = aPrincipal;
+  mInPrivateBrowsing = aInPrivateBrowsing;
+  mRequireInteraction = aRequireInteraction;
+  mSilent = aSilent;
+  mVibrate = aVibrate.Clone();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::SetActions(
+    const nsTArray<RefPtr<nsIAlertAction>>& aActions) {
+  mActions = aActions.Clone();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::GetName(nsAString& aName) {
+  aName = mName;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::GetImageURL(nsAString& aImageURL) {
+  aImageURL = mImageURL;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::GetTitle(nsAString& aTitle) {
+  aTitle = mTitle;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::GetText(nsAString& aText) {
+  aText = mText;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::GetTextClickable(bool* aTextClickable) {
+  *aTextClickable = mTextClickable;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::GetCookie(nsAString& aCookie) {
+  aCookie = mCookie;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::GetDir(nsAString& aDir) {
+  aDir = mDir;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::GetLang(nsAString& aLang) {
+  aLang = mLang;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::GetRequireInteraction(bool* aRequireInteraction) {
+  *aRequireInteraction = mRequireInteraction;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::GetData(nsAString& aData) {
+  aData = mData;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::GetPrincipal(nsIPrincipal** aPrincipal) {
+  NS_IF_ADDREF(*aPrincipal = mPrincipal);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::GetURI(nsIURI** aURI) {
+  if (!nsAlertsUtils::IsActionablePrincipal(mPrincipal)) {
+    *aURI = nullptr;
+    return NS_OK;
+  }
+  auto* basePrin = BasePrincipal::Cast(mPrincipal);
+  return basePrin->GetURI(aURI);
+}
+
+NS_IMETHODIMP
+AlertNotification::GetInPrivateBrowsing(bool* aInPrivateBrowsing) {
+  *aInPrivateBrowsing = mInPrivateBrowsing;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::GetActionable(bool* aActionable) {
+  *aActionable = nsAlertsUtils::IsActionablePrincipal(mPrincipal);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::GetSilent(bool* aSilent) {
+  *aSilent = mSilent;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::GetVibrate(nsTArray<uint32_t>& aVibrate) {
+  aVibrate = mVibrate.Clone();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::GetActions(nsTArray<RefPtr<nsIAlertAction>>& aActions) {
+  aActions = mActions.Clone();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::GetSource(nsAString& aSource) {
+  nsAlertsUtils::GetSourceHostPort(mPrincipal, aSource);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::GetOpaqueRelaunchData(nsAString& aOpaqueRelaunchData) {
+  aOpaqueRelaunchData = mOpaqueRelaunchData;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::SetOpaqueRelaunchData(const nsAString& aOpaqueRelaunchData) {
+  mOpaqueRelaunchData = aOpaqueRelaunchData;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertNotification::LoadImage(uint32_t aTimeout,
+                             nsIAlertNotificationImageListener* aListener,
+                             nsISupports* aUserData, nsICancelable** aRequest) {
+  NS_ENSURE_ARG(aListener);
+  NS_ENSURE_ARG_POINTER(aRequest);
+  *aRequest = nullptr;
+
+  // Exit early if this alert doesn't have an image.
+  if (mImageURL.IsEmpty()) {
+    return aListener->OnImageMissing(aUserData);
+  }
+  nsCOMPtr<nsIURI> imageURI;
+  NS_NewURI(getter_AddRefs(imageURI), mImageURL);
+  if (!imageURI) {
+    return aListener->OnImageMissing(aUserData);
+  }
+
+  RefPtr<AlertImageRequest> request = new AlertImageRequest(
+      imageURI, mPrincipal, mInPrivateBrowsing, aTimeout, aListener, aUserData);
+  request->Start();
+  request.forget(aRequest);
+  return NS_OK;
+}
+
+NS_IMPL_CYCLE_COLLECTION(AlertImageRequest, mURI, mPrincipal, mListener,
+                         mUserData)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(AlertImageRequest)
+  NS_INTERFACE_MAP_ENTRY(imgINotificationObserver)
+  NS_INTERFACE_MAP_ENTRY(nsICancelable)
+  NS_INTERFACE_MAP_ENTRY(nsITimerCallback)
+  NS_INTERFACE_MAP_ENTRY(nsINamed)
+  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, imgINotificationObserver)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(AlertImageRequest)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(AlertImageRequest)
+
+AlertImageRequest::AlertImageRequest(
+    nsIURI* aURI, nsIPrincipal* aPrincipal, bool aInPrivateBrowsing,
+    uint32_t aTimeout, nsIAlertNotificationImageListener* aListener,
+    nsISupports* aUserData)
+    : mURI(aURI),
+      mPrincipal(aPrincipal),
+      mInPrivateBrowsing(aInPrivateBrowsing),
+      mTimeout(aTimeout),
+      mListener(aListener),
+      mUserData(aUserData) {}
+
+AlertImageRequest::~AlertImageRequest() {
+  if (mRequest) {
+    mRequest->CancelAndForgetObserver(NS_BINDING_ABORTED);
+  }
+}
+
+void AlertImageRequest::Notify(imgIRequest* aRequest, int32_t aType,
+                               const nsIntRect* aData) {
+  MOZ_ASSERT(aRequest == mRequest);
+
+  uint32_t imgStatus = imgIRequest::STATUS_ERROR;
+  nsresult rv = aRequest->GetImageStatus(&imgStatus);
+  if (NS_WARN_IF(NS_FAILED(rv)) || (imgStatus & imgIRequest::STATUS_ERROR)) {
+    NotifyMissing();
+    return;
+  }
+
+  // If the image is already decoded, `FRAME_COMPLETE` will fire before
+  // `LOAD_COMPLETE`, so we can notify the listener immediately. Otherwise,
+  // we'll need to request a decode when `LOAD_COMPLETE` fires, and wait
+  // for the first frame.
+
+  if (aType == imgINotificationObserver::LOAD_COMPLETE) {
+    if (!(imgStatus & imgIRequest::STATUS_FRAME_COMPLETE)) {
+      nsCOMPtr<imgIContainer> image;
+      rv = aRequest->GetImage(getter_AddRefs(image));
+      if (NS_WARN_IF(NS_FAILED(rv) || !image)) {
+        NotifyMissing();
+        return;
+      }
+
+      // Ask the image to decode at its intrinsic size.
+      int32_t width = 0, height = 0;
+      image->GetWidth(&width);
+      image->GetHeight(&height);
+      image->RequestDecodeForSize(gfx::IntSize(width, height),
+                                  imgIContainer::FLAG_HIGH_QUALITY_SCALING);
+    }
+    return;
+  }
+
+  if (aType == imgINotificationObserver::FRAME_COMPLETE) {
+    return NotifyComplete();
+  }
+}
+
+NS_IMETHODIMP
+AlertImageRequest::Notify(nsITimer* aTimer) {
+  MOZ_ASSERT(aTimer == mTimer);
+  return NotifyMissing();
+}
+
+NS_IMETHODIMP
+AlertImageRequest::GetName(nsACString& aName) {
+  aName.AssignLiteral("AlertImageRequest");
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AlertImageRequest::Cancel(nsresult aReason) {
+  if (mRequest) {
+    mRequest->Cancel(aReason);
+  }
+  // We call `NotifyMissing` here because we won't receive a `LOAD_COMPLETE`
+  // notification if we cancel the request before it loads (bug 1233086,
+  // comment 33). Once that's fixed, `nsIAlertNotification::loadImage` could
+  // return the underlying `imgIRequest` instead of the wrapper.
+  return NotifyMissing();
+}
+
+nsresult AlertImageRequest::Start() {
+  // Keep the request alive until we notify the image listener.
+  NS_ADDREF_THIS();
+
+  nsresult rv;
+  if (mTimeout > 0) {
+    rv = NS_NewTimerWithCallback(getter_AddRefs(mTimer), this, mTimeout,
+                                 nsITimer::TYPE_ONE_SHOT);
+    if (NS_WARN_IF(NS_FAILED(rv))) {
+      return NotifyMissing();
+    }
+  }
+
+  // Begin loading the image.
+  imgLoader* il = imgLoader::NormalLoader();
+  if (!il) {
+    return NotifyMissing();
+  }
+
+  // Bug 1237405: `LOAD_ANONYMOUS` disables cookies, but we want to use a
+  // temporary cookie jar instead. We should also use
+  // `imgLoader::PrivateBrowsingLoader()` instead of the normal loader.
+  // Unfortunately, the PB loader checks the load group, and asserts if its
+  // load context's PB flag isn't set. The fix is to pass the load group to
+  // `nsIAlertNotification::loadImage`.
+  int32_t loadFlags = nsIRequest::LOAD_NORMAL;
+  if (mInPrivateBrowsing) {
+    loadFlags = nsIRequest::LOAD_ANONYMOUS;
+  }
+
+  rv = il->LoadImageXPCOM(
+      mURI, nullptr, nullptr, mPrincipal, nullptr, this, nullptr, loadFlags,
+      nullptr, nsIContentPolicy::TYPE_INTERNAL_IMAGE, getter_AddRefs(mRequest));
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    return NotifyMissing();
+  }
+
+  return NS_OK;
+}
+
+nsresult AlertImageRequest::NotifyMissing() {
+  if (mTimer) {
+    mTimer->Cancel();
+    mTimer = nullptr;
+  }
+  if (nsCOMPtr<nsIAlertNotificationImageListener> listener =
+          std::move(mListener)) {
+    nsresult rv = listener->OnImageMissing(mUserData);
+    NS_RELEASE_THIS();
+    return rv;
+  }
+
+  return NS_OK;
+}
+
+void AlertImageRequest::NotifyComplete() {
+  if (mTimer) {
+    mTimer->Cancel();
+    mTimer = nullptr;
+  }
+  if (nsCOMPtr<nsIAlertNotificationImageListener> listener =
+          std::move(mListener)) {
+    listener->OnImageReady(mUserData, mRequest);
+    NS_RELEASE_THIS();
+  }
+}
+
+}  // namespace mozilla