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-rw-r--r--layout/build/nsContentDLF.cpp425
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diff --git a/layout/build/nsContentDLF.cpp b/layout/build/nsContentDLF.cpp
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+/* -*- Mode: c++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 sw=2 et tw=78: */
+/* 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 "nsCOMPtr.h"
+#include "nsContentDLF.h"
+#include "nsDocShell.h"
+#include "nsGenericHTMLElement.h"
+#include "nsGkAtoms.h"
+#include "nsIComponentManager.h"
+#include "nsIComponentRegistrar.h"
+#include "nsIContentViewer.h"
+#include "nsICategoryManager.h"
+#include "nsIDocumentLoaderFactory.h"
+#include "nsIDocument.h"
+#include "nsIURL.h"
+#include "nsNodeInfoManager.h"
+#include "nsIScriptSecurityManager.h"
+#include "nsString.h"
+#include "nsContentCID.h"
+#include "prprf.h"
+#include "nsNetUtil.h"
+#include "nsCRT.h"
+#include "nsIViewSourceChannel.h"
+#include "nsContentUtils.h"
+#include "imgLoader.h"
+#include "nsCharsetSource.h"
+#include "nsMimeTypes.h"
+#include "DecoderTraits.h"
+
+
+// plugins
+#include "nsIPluginHost.h"
+#include "nsPluginHost.h"
+static NS_DEFINE_CID(kPluginDocumentCID, NS_PLUGINDOCUMENT_CID);
+
+// Factory code for creating variations on html documents
+
+#undef NOISY_REGISTRY
+
+static NS_DEFINE_IID(kHTMLDocumentCID, NS_HTMLDOCUMENT_CID);
+static NS_DEFINE_IID(kXMLDocumentCID, NS_XMLDOCUMENT_CID);
+static NS_DEFINE_IID(kSVGDocumentCID, NS_SVGDOCUMENT_CID);
+static NS_DEFINE_IID(kVideoDocumentCID, NS_VIDEODOCUMENT_CID);
+static NS_DEFINE_IID(kImageDocumentCID, NS_IMAGEDOCUMENT_CID);
+static NS_DEFINE_IID(kXULDocumentCID, NS_XULDOCUMENT_CID);
+
+already_AddRefed<nsIContentViewer> NS_NewContentViewer();
+
+static const char* const gHTMLTypes[] = {
+ TEXT_HTML,
+ VIEWSOURCE_CONTENT_TYPE,
+ APPLICATION_XHTML_XML,
+ APPLICATION_WAPXHTML_XML,
+ 0
+};
+
+static const char* const gXMLTypes[] = {
+ TEXT_XML,
+ APPLICATION_XML,
+ APPLICATION_MATHML_XML,
+ APPLICATION_RDF_XML,
+ TEXT_RDF,
+ 0
+};
+
+static const char* const gSVGTypes[] = {
+ IMAGE_SVG_XML,
+ 0
+};
+
+static const char* const gXULTypes[] = {
+ TEXT_XUL,
+ APPLICATION_CACHED_XUL,
+ 0
+};
+
+static bool
+IsTypeInList(const nsACString& aType, const char* const aList[])
+{
+ int32_t typeIndex;
+ for (typeIndex = 0; aList[typeIndex]; ++typeIndex) {
+ if (aType.Equals(aList[typeIndex])) {
+ return true;
+ }
+ }
+
+ return false;
+}
+
+nsresult
+NS_NewContentDocumentLoaderFactory(nsIDocumentLoaderFactory** aResult)
+{
+ NS_PRECONDITION(aResult, "null OUT ptr");
+ if (!aResult) {
+ return NS_ERROR_NULL_POINTER;
+ }
+ nsContentDLF* it = new nsContentDLF();
+ if (!it) {
+ return NS_ERROR_OUT_OF_MEMORY;
+ }
+
+ return CallQueryInterface(it, aResult);
+}
+
+nsContentDLF::nsContentDLF()
+{
+}
+
+nsContentDLF::~nsContentDLF()
+{
+}
+
+NS_IMPL_ISUPPORTS(nsContentDLF,
+ nsIDocumentLoaderFactory)
+
+bool
+MayUseXULXBL(nsIChannel* aChannel)
+{
+ nsIScriptSecurityManager *securityManager =
+ nsContentUtils::GetSecurityManager();
+ if (!securityManager) {
+ return false;
+ }
+
+ nsCOMPtr<nsIPrincipal> principal;
+ securityManager->GetChannelResultPrincipal(aChannel, getter_AddRefs(principal));
+ NS_ENSURE_TRUE(principal, false);
+
+ return nsContentUtils::AllowXULXBLForPrincipal(principal);
+}
+
+NS_IMETHODIMP
+nsContentDLF::CreateInstance(const char* aCommand,
+ nsIChannel* aChannel,
+ nsILoadGroup* aLoadGroup,
+ const nsACString& aContentType,
+ nsIDocShell* aContainer,
+ nsISupports* aExtraInfo,
+ nsIStreamListener** aDocListener,
+ nsIContentViewer** aDocViewer)
+{
+ // Make a copy of aContentType, because we're possibly going to change it.
+ nsAutoCString contentType(aContentType);
+
+ // Are we viewing source?
+ nsCOMPtr<nsIViewSourceChannel> viewSourceChannel = do_QueryInterface(aChannel);
+ if (viewSourceChannel)
+ {
+ aCommand = "view-source";
+
+ // The parser freaks out when it sees the content-type that a
+ // view-source channel normally returns. Get the actual content
+ // type of the data. If it's known, use it; otherwise use
+ // text/plain.
+ nsAutoCString type;
+ viewSourceChannel->GetOriginalContentType(type);
+ bool knownType =
+ (!type.EqualsLiteral(VIEWSOURCE_CONTENT_TYPE) &&
+ IsTypeInList(type, gHTMLTypes)) ||
+ nsContentUtils::IsPlainTextType(type) ||
+ IsTypeInList(type, gXMLTypes) ||
+ IsTypeInList(type, gSVGTypes) ||
+ IsTypeInList(type, gXMLTypes);
+
+ if (knownType) {
+ viewSourceChannel->SetContentType(type);
+ } else if (IsImageContentType(type.get())) {
+ // If it's an image, we want to display it the same way we normally would.
+ // Also note the lifetime of "type" allows us to safely use "get()" here.
+ contentType = type;
+ } else {
+ viewSourceChannel->SetContentType(NS_LITERAL_CSTRING(TEXT_PLAIN));
+ }
+ } else if (aContentType.EqualsLiteral(VIEWSOURCE_CONTENT_TYPE)) {
+ aChannel->SetContentType(NS_LITERAL_CSTRING(TEXT_PLAIN));
+ contentType = TEXT_PLAIN;
+ }
+
+ // Try html or plaintext; both use the same document CID
+ if (IsTypeInList(contentType, gHTMLTypes) ||
+ nsContentUtils::IsPlainTextType(contentType)) {
+ return CreateDocument(aCommand,
+ aChannel, aLoadGroup,
+ aContainer, kHTMLDocumentCID,
+ aDocListener, aDocViewer);
+ }
+
+ // Try XML
+ if (IsTypeInList(contentType, gXMLTypes)) {
+ return CreateDocument(aCommand,
+ aChannel, aLoadGroup,
+ aContainer, kXMLDocumentCID,
+ aDocListener, aDocViewer);
+ }
+
+ // Try SVG
+ if (IsTypeInList(contentType, gSVGTypes)) {
+ return CreateDocument(aCommand,
+ aChannel, aLoadGroup,
+ aContainer, kSVGDocumentCID,
+ aDocListener, aDocViewer);
+ }
+
+ // Try XUL
+ if (IsTypeInList(contentType, gXULTypes)) {
+ if (!MayUseXULXBL(aChannel)) {
+ return NS_ERROR_REMOTE_XUL;
+ }
+
+ return CreateXULDocument(aCommand, aChannel, aLoadGroup, aContainer,
+ aExtraInfo, aDocListener, aDocViewer);
+ }
+
+ if (mozilla::DecoderTraits::ShouldHandleMediaType(contentType.get(),
+ /* DecoderDoctorDiagnostics* */ nullptr)) {
+ return CreateDocument(aCommand,
+ aChannel, aLoadGroup,
+ aContainer, kVideoDocumentCID,
+ aDocListener, aDocViewer);
+ }
+
+ // Try image types
+ if (IsImageContentType(contentType.get())) {
+ return CreateDocument(aCommand,
+ aChannel, aLoadGroup,
+ aContainer, kImageDocumentCID,
+ aDocListener, aDocViewer);
+ }
+
+ RefPtr<nsPluginHost> pluginHost = nsPluginHost::GetInst();
+ // Don't exclude disabled plugins, which will still trigger the "this plugin
+ // is disabled" placeholder.
+ if (pluginHost && pluginHost->HavePluginForType(contentType,
+ nsPluginHost::eExcludeNone)) {
+ return CreateDocument(aCommand,
+ aChannel, aLoadGroup,
+ aContainer, kPluginDocumentCID,
+ aDocListener, aDocViewer);
+ }
+
+ // If we get here, then we weren't able to create anything. Sorry!
+ return NS_ERROR_FAILURE;
+}
+
+
+NS_IMETHODIMP
+nsContentDLF::CreateInstanceForDocument(nsISupports* aContainer,
+ nsIDocument* aDocument,
+ const char *aCommand,
+ nsIContentViewer** aContentViewer)
+{
+ MOZ_ASSERT(aDocument);
+
+ nsCOMPtr<nsIContentViewer> contentViewer = NS_NewContentViewer();
+
+ // Bind the document to the Content Viewer
+ contentViewer->LoadStart(aDocument);
+ contentViewer.forget(aContentViewer);
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsContentDLF::CreateBlankDocument(nsILoadGroup *aLoadGroup,
+ nsIPrincipal* aPrincipal,
+ nsIDocument **aDocument)
+{
+ *aDocument = nullptr;
+
+ nsresult rv = NS_ERROR_FAILURE;
+
+ // create a new blank HTML document
+ nsCOMPtr<nsIDocument> blankDoc(do_CreateInstance(kHTMLDocumentCID));
+
+ if (blankDoc) {
+ // initialize
+ nsCOMPtr<nsIURI> uri;
+ NS_NewURI(getter_AddRefs(uri), NS_LITERAL_CSTRING("about:blank"));
+ if (uri) {
+ blankDoc->ResetToURI(uri, aLoadGroup, aPrincipal);
+ rv = NS_OK;
+ }
+ }
+
+ // add some simple content structure
+ if (NS_SUCCEEDED(rv)) {
+ rv = NS_ERROR_FAILURE;
+
+ nsNodeInfoManager *nim = blankDoc->NodeInfoManager();
+
+ RefPtr<mozilla::dom::NodeInfo> htmlNodeInfo;
+
+ // generate an html html element
+ htmlNodeInfo = nim->GetNodeInfo(nsGkAtoms::html, 0, kNameSpaceID_XHTML,
+ nsIDOMNode::ELEMENT_NODE);
+ nsCOMPtr<nsIContent> htmlElement =
+ NS_NewHTMLHtmlElement(htmlNodeInfo.forget());
+
+ // generate an html head element
+ htmlNodeInfo = nim->GetNodeInfo(nsGkAtoms::head, 0, kNameSpaceID_XHTML,
+ nsIDOMNode::ELEMENT_NODE);
+ nsCOMPtr<nsIContent> headElement =
+ NS_NewHTMLHeadElement(htmlNodeInfo.forget());
+
+ // generate an html body elemment
+ htmlNodeInfo = nim->GetNodeInfo(nsGkAtoms::body, 0, kNameSpaceID_XHTML,
+ nsIDOMNode::ELEMENT_NODE);
+ nsCOMPtr<nsIContent> bodyElement =
+ NS_NewHTMLBodyElement(htmlNodeInfo.forget());
+
+ // blat in the structure
+ if (htmlElement && headElement && bodyElement) {
+ NS_ASSERTION(blankDoc->GetChildCount() == 0,
+ "Shouldn't have children");
+ rv = blankDoc->AppendChildTo(htmlElement, false);
+ if (NS_SUCCEEDED(rv)) {
+ rv = htmlElement->AppendChildTo(headElement, false);
+
+ if (NS_SUCCEEDED(rv)) {
+ // XXXbz Why not notifying here?
+ htmlElement->AppendChildTo(bodyElement, false);
+ }
+ }
+ }
+ }
+
+ // add a nice bow
+ if (NS_SUCCEEDED(rv)) {
+ blankDoc->SetDocumentCharacterSetSource(kCharsetFromDocTypeDefault);
+ blankDoc->SetDocumentCharacterSet(NS_LITERAL_CSTRING("UTF-8"));
+
+ blankDoc.forget(aDocument);
+ }
+ return rv;
+}
+
+
+nsresult
+nsContentDLF::CreateDocument(const char* aCommand,
+ nsIChannel* aChannel,
+ nsILoadGroup* aLoadGroup,
+ nsIDocShell* aContainer,
+ const nsCID& aDocumentCID,
+ nsIStreamListener** aDocListener,
+ nsIContentViewer** aContentViewer)
+{
+ nsresult rv = NS_ERROR_FAILURE;
+
+ nsCOMPtr<nsIURI> aURL;
+ rv = aChannel->GetURI(getter_AddRefs(aURL));
+ if (NS_FAILED(rv)) return rv;
+
+#ifdef NOISY_CREATE_DOC
+ if (nullptr != aURL) {
+ nsAutoString tmp;
+ aURL->ToString(tmp);
+ fputs(NS_LossyConvertUTF16toASCII(tmp).get(), stdout);
+ printf(": creating document\n");
+ }
+#endif
+
+ // Create the document
+ nsCOMPtr<nsIDocument> doc = do_CreateInstance(aDocumentCID, &rv);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // Create the content viewer XXX: could reuse content viewer here!
+ nsCOMPtr<nsIContentViewer> contentViewer = NS_NewContentViewer();
+
+ doc->SetContainer(static_cast<nsDocShell*>(aContainer));
+
+ // Initialize the document to begin loading the data. An
+ // nsIStreamListener connected to the parser is returned in
+ // aDocListener.
+ rv = doc->StartDocumentLoad(aCommand, aChannel, aLoadGroup, aContainer, aDocListener, true);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // Bind the document to the Content Viewer
+ contentViewer->LoadStart(doc);
+ contentViewer.forget(aContentViewer);
+ return NS_OK;
+}
+
+nsresult
+nsContentDLF::CreateXULDocument(const char* aCommand,
+ nsIChannel* aChannel,
+ nsILoadGroup* aLoadGroup,
+ nsIDocShell* aContainer,
+ nsISupports* aExtraInfo,
+ nsIStreamListener** aDocListener,
+ nsIContentViewer** aContentViewer)
+{
+ nsresult rv;
+ nsCOMPtr<nsIDocument> doc = do_CreateInstance(kXULDocumentCID, &rv);
+ if (NS_FAILED(rv)) return rv;
+
+ nsCOMPtr<nsIContentViewer> contentViewer = NS_NewContentViewer();
+
+ nsCOMPtr<nsIURI> aURL;
+ rv = aChannel->GetURI(getter_AddRefs(aURL));
+ if (NS_FAILED(rv)) return rv;
+
+ /*
+ * Initialize the document to begin loading the data...
+ *
+ * An nsIStreamListener connected to the parser is returned in
+ * aDocListener.
+ */
+
+ doc->SetContainer(static_cast<nsDocShell*>(aContainer));
+
+ rv = doc->StartDocumentLoad(aCommand, aChannel, aLoadGroup, aContainer, aDocListener, true);
+ if (NS_FAILED(rv)) return rv;
+
+ /*
+ * Bind the document to the Content Viewer...
+ */
+ contentViewer->LoadStart(doc);
+ contentViewer.forget(aContentViewer);
+ return NS_OK;
+}
+
+bool nsContentDLF::IsImageContentType(const char* aContentType) {
+ return imgLoader::SupportImageWithMimeType(aContentType);
+}