The Tor Browser: content/html/document/src/PluginDocument.cpp@b8a032363ba2 (annotated)

content/html/document/src/PluginDocument.cpp@b8a032363ba2 (annotated)

content/html/document/src/PluginDocument.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Thu, 22 Jan 2015 13:21:57 +0100
branch: TOR_BUG_9701
changeset 15: b8a032363ba2
permissions: -rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* 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 "MediaDocument.h"
 #include "nsIPluginDocument.h"
 #include "nsGkAtoms.h"
 #include "nsIPresShell.h"
 #include "nsIObjectFrame.h"
 #include "nsNPAPIPluginInstance.h"
 #include "nsIDocumentInlines.h"
 #include "nsIDocShellTreeItem.h"
 #include "nsNodeInfoManager.h"
 #include "nsContentCreatorFunctions.h"
 #include "nsContentPolicyUtils.h"
 #include "nsIPropertyBag2.h"
 #include "mozilla/dom/Element.h"
 #include "nsObjectLoadingContent.h"
 #include "GeckoProfiler.h"
 namespace mozilla {
 namespace dom {
 class PluginDocument MOZ_FINAL : public MediaDocument
                                , public nsIPluginDocument
 {
 public:
   PluginDocument();
   virtual ~PluginDocument();
   NS_DECL_ISUPPORTS_INHERITED
   NS_DECL_NSIPLUGINDOCUMENT
   virtual nsresult StartDocumentLoad(const char*         aCommand,
                                      nsIChannel*         aChannel,
                                      nsILoadGroup*       aLoadGroup,
                                      nsISupports*        aContainer,
                                      nsIStreamListener** aDocListener,
                                      bool                aReset = true,
                                      nsIContentSink*     aSink = nullptr);
   virtual void SetScriptGlobalObject(nsIScriptGlobalObject* aScriptGlobalObject);
   virtual bool CanSavePresentation(nsIRequest *aNewRequest);
   const nsCString& GetType() const { return mMimeType; }
   Element*         GetPluginContent() { return mPluginContent; }
   void StartLayout() { MediaDocument::StartLayout(); }
   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(PluginDocument, MediaDocument)
 protected:
   nsresult CreateSyntheticPluginDocument();
   nsCOMPtr<Element>                        mPluginContent;
   nsRefPtr<MediaDocumentStreamListener>    mStreamListener;
   nsCString                                mMimeType;
 };
 class PluginStreamListener : public MediaDocumentStreamListener
 {
 public:
   PluginStreamListener(PluginDocument* doc)
     : MediaDocumentStreamListener(doc)
     , mPluginDoc(doc)
   {}
   NS_IMETHOD OnStartRequest(nsIRequest* request, nsISupports *ctxt);
 private:
   nsRefPtr<PluginDocument> mPluginDoc;
 };
 NS_IMETHODIMP
 PluginStreamListener::OnStartRequest(nsIRequest* request, nsISupports *ctxt)
 {
   PROFILER_LABEL("PluginStreamListener", "OnStartRequest");
   nsCOMPtr<nsIContent> embed = mPluginDoc->GetPluginContent();
   nsCOMPtr<nsIObjectLoadingContent> objlc = do_QueryInterface(embed);
   nsCOMPtr<nsIStreamListener> objListener = do_QueryInterface(objlc);
   if (!objListener) {
     NS_NOTREACHED("PluginStreamListener without appropriate content node");
     return NS_BINDING_ABORTED;
   }
   SetStreamListener(objListener);
   // Sets up the ObjectLoadingContent tag as if it is waiting for a
   // channel, so it can proceed with a load normally once it gets OnStartRequest
   nsresult rv = objlc->InitializeFromChannel(request);
   if (NS_FAILED(rv)) {
     NS_NOTREACHED("InitializeFromChannel failed");
     return rv;
   }
   // Note that because we're now hooked up to a plugin listener, this will
   // likely spawn a plugin, which may re-enter.
   return MediaDocumentStreamListener::OnStartRequest(request, ctxt);
 }
   // NOTE! nsDocument::operator new() zeroes out all members, so don't
   // bother initializing members to 0.
 PluginDocument::PluginDocument()
 {}
 PluginDocument::~PluginDocument()
 {}
 NS_IMPL_CYCLE_COLLECTION_INHERITED(PluginDocument, MediaDocument,
                                    mPluginContent)
 NS_IMPL_ADDREF_INHERITED(PluginDocument, MediaDocument)
 NS_IMPL_RELEASE_INHERITED(PluginDocument, MediaDocument)
 NS_INTERFACE_TABLE_HEAD_CYCLE_COLLECTION_INHERITED(PluginDocument)
   NS_INTERFACE_TABLE_INHERITED(PluginDocument, nsIPluginDocument)
 NS_INTERFACE_TABLE_TAIL_INHERITING(MediaDocument)
 void
 PluginDocument::SetScriptGlobalObject(nsIScriptGlobalObject* aScriptGlobalObject)
 {
   // Set the script global object on the superclass before doing
   // anything that might require it....
   MediaDocument::SetScriptGlobalObject(aScriptGlobalObject);
   if (aScriptGlobalObject) {
     if (!mPluginContent) {
       // Create synthetic document
 #ifdef DEBUG
       nsresult rv =
 #endif
         CreateSyntheticPluginDocument();
       NS_ASSERTION(NS_SUCCEEDED(rv), "failed to create synthetic document");
     }
     BecomeInteractive();
   } else {
     mStreamListener = nullptr;
   }
 }
 bool
 PluginDocument::CanSavePresentation(nsIRequest *aNewRequest)
 {
   // Full-page plugins cannot be cached, currently, because we don't have
   // the stream listener data to feed to the plugin instance.
   return false;
 }
 nsresult
 PluginDocument::StartDocumentLoad(const char*         aCommand,
                                   nsIChannel*         aChannel,
                                   nsILoadGroup*       aLoadGroup,
                                   nsISupports*        aContainer,
                                   nsIStreamListener** aDocListener,
                                   bool                aReset,
                                   nsIContentSink*     aSink)
 {
   // do not allow message panes to host full-page plugins
   // returning an error causes helper apps to take over
   nsCOMPtr<nsIDocShellTreeItem> dsti (do_QueryInterface(aContainer));
   if (dsti) {
     bool isMsgPane = false;
     dsti->NameEquals(MOZ_UTF16("messagepane"), &isMsgPane);
     if (isMsgPane) {
       return NS_ERROR_FAILURE;
     }
   }
   nsresult rv =
     MediaDocument::StartDocumentLoad(aCommand, aChannel, aLoadGroup, aContainer,
                                      aDocListener, aReset, aSink);
   if (NS_FAILED(rv)) {
     return rv;
   }
   rv = aChannel->GetContentType(mMimeType);
   if (NS_FAILED(rv)) {
     return rv;
   }
   MediaDocument::UpdateTitleAndCharset(mMimeType);
   mStreamListener = new PluginStreamListener(this);
   NS_ASSERTION(aDocListener, "null aDocListener");
   NS_ADDREF(*aDocListener = mStreamListener);
   return rv;
 }
 nsresult
 PluginDocument::CreateSyntheticPluginDocument()
 {
   NS_ASSERTION(!GetShell() || !GetShell()->DidInitialize(),
                "Creating synthetic plugin document content too late");
   // make our generic document
   nsresult rv = MediaDocument::CreateSyntheticDocument();
   NS_ENSURE_SUCCESS(rv, rv);
   // then attach our plugin
   Element* body = GetBodyElement();
   if (!body) {
     NS_WARNING("no body on plugin document!");
     return NS_ERROR_FAILURE;
   }
   // remove margins from body
   NS_NAMED_LITERAL_STRING(zero, "0");
   body->SetAttr(kNameSpaceID_None, nsGkAtoms::marginwidth, zero, false);
   body->SetAttr(kNameSpaceID_None, nsGkAtoms::marginheight, zero, false);
   // make plugin content
   nsCOMPtr<nsINodeInfo> nodeInfo;
   nodeInfo = mNodeInfoManager->GetNodeInfo(nsGkAtoms::embed, nullptr,
                                            kNameSpaceID_XHTML,
                                            nsIDOMNode::ELEMENT_NODE);
   rv = NS_NewHTMLElement(getter_AddRefs(mPluginContent), nodeInfo.forget(),
                          NOT_FROM_PARSER);
   NS_ENSURE_SUCCESS(rv, rv);
   // make it a named element
   mPluginContent->SetAttr(kNameSpaceID_None, nsGkAtoms::name,
                           NS_LITERAL_STRING("plugin"), false);
   // fill viewport and auto-resize
   NS_NAMED_LITERAL_STRING(percent100, "100%");
   mPluginContent->SetAttr(kNameSpaceID_None, nsGkAtoms::width, percent100,
                           false);
   mPluginContent->SetAttr(kNameSpaceID_None, nsGkAtoms::height, percent100,
                           false);
   // set URL
   nsAutoCString src;
   mDocumentURI->GetSpec(src);
   mPluginContent->SetAttr(kNameSpaceID_None, nsGkAtoms::src,
                           NS_ConvertUTF8toUTF16(src), false);
   // set mime type
   mPluginContent->SetAttr(kNameSpaceID_None, nsGkAtoms::type,
                           NS_ConvertUTF8toUTF16(mMimeType), false);
   // nsHTML(Shared)ObjectElement does not kick off a load on BindToTree if it is
   // to a PluginDocument
   body->AppendChildTo(mPluginContent, false);
   return NS_OK;
 }
 NS_IMETHODIMP
 PluginDocument::Print()
 {
   NS_ENSURE_TRUE(mPluginContent, NS_ERROR_FAILURE);
   nsIObjectFrame* objectFrame =
     do_QueryFrame(mPluginContent->GetPrimaryFrame());
   if (objectFrame) {
     nsRefPtr<nsNPAPIPluginInstance> pi;
     objectFrame->GetPluginInstance(getter_AddRefs(pi));
     if (pi) {
       NPPrint npprint;
       npprint.mode = NP_FULL;
       npprint.print.fullPrint.pluginPrinted = false;
       npprint.print.fullPrint.printOne = false;
       npprint.print.fullPrint.platformPrint = nullptr;
       pi->Print(&npprint);
     }
   }
   return NS_OK;
 }
 } // namespace dom
 } // namespace mozilla
 nsresult
 NS_NewPluginDocument(nsIDocument** aResult)
 {
   mozilla::dom::PluginDocument* doc = new mozilla::dom::PluginDocument();
   NS_ADDREF(doc);
   nsresult rv = doc->Init();
   if (NS_FAILED(rv)) {
     NS_RELEASE(doc);
   }
   *aResult = doc;
   return rv;
 }

The Tor Browser / annotate

content/html/document/src/PluginDocument.cpp@b8a032363ba2 (annotated)

content/html/document/src/PluginDocument.cpp