Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 323 insertions, 0 deletions

diff --git a/dom/base/DOMParser.cpp b/dom/base/DOMParser.cpp
new file mode 100644
index 0000000000..27e0650550
--- /dev/null
+++ b/dom/base/DOMParser.cpp
@@ -0,0 +1,323 @@
+/* -*- 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/dom/DOMParser.h"
+
+#include "nsNetUtil.h"
+#include "nsDOMString.h"
+#include "MainThreadUtils.h"
+#include "SystemPrincipal.h"
+#include "nsIScriptGlobalObject.h"
+#include "nsIStreamListener.h"
+#include "nsStringStream.h"
+#include "nsCRT.h"
+#include "nsStreamUtils.h"
+#include "nsContentUtils.h"
+#include "nsDOMJSUtils.h"
+#include "nsError.h"
+#include "nsPIDOMWindow.h"
+#include "mozilla/BasePrincipal.h"
+#include "mozilla/LoadInfo.h"
+#include "mozilla/NullPrincipal.h"
+#include "mozilla/dom/BindingUtils.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/ScriptSettings.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+DOMParser::DOMParser(nsIGlobalObject* aOwner, nsIPrincipal* aDocPrincipal,
+                     nsIURI* aDocumentURI, nsIURI* aBaseURI)
+    : mOwner(aOwner),
+      mPrincipal(aDocPrincipal),
+      mDocumentURI(aDocumentURI),
+      mBaseURI(aBaseURI),
+      mForceEnableXULXBL(false),
+      mForceEnableDTD(false) {
+  MOZ_ASSERT(aDocPrincipal);
+  MOZ_ASSERT(aDocumentURI);
+}
+
+DOMParser::~DOMParser() = default;
+
+// QueryInterface implementation for DOMParser
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMParser)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DOMParser, mOwner)
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMParser)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMParser)
+
+already_AddRefed<Document> DOMParser::ParseFromString(const nsAString& aStr,
+                                                      SupportedType aType,
+                                                      ErrorResult& aRv) {
+  if (aType == SupportedType::Text_html) {
+    nsCOMPtr<Document> document = SetUpDocument(DocumentFlavorHTML, aRv);
+    if (NS_WARN_IF(aRv.Failed())) {
+      return nullptr;
+    }
+
+    // Keep the XULXBL state in sync with the XML case.
+    if (mForceEnableXULXBL) {
+      document->ForceEnableXULXBL();
+    }
+
+    if (mForceEnableDTD) {
+      document->ForceSkipDTDSecurityChecks();
+    }
+
+    nsresult rv = nsContentUtils::ParseDocumentHTML(aStr, document, false);
+    if (NS_WARN_IF(NS_FAILED(rv))) {
+      aRv.Throw(rv);
+      return nullptr;
+    }
+
+    return document.forget();
+  }
+
+  nsAutoCString utf8str;
+  // Convert from UTF16 to UTF8 using fallible allocations
+  if (!AppendUTF16toUTF8(aStr, utf8str, mozilla::fallible)) {
+    aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
+    return nullptr;
+  }
+
+  // The new stream holds a reference to the buffer
+  nsCOMPtr<nsIInputStream> stream;
+  nsresult rv = NS_NewByteInputStream(getter_AddRefs(stream), utf8str,
+                                      NS_ASSIGNMENT_DEPEND);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    aRv.Throw(rv);
+    return nullptr;
+  }
+
+  return ParseFromStream(stream, u"UTF-8"_ns, utf8str.Length(), aType, aRv);
+}
+
+already_AddRefed<Document> DOMParser::ParseFromSafeString(const nsAString& aStr,
+                                                          SupportedType aType,
+                                                          ErrorResult& aRv) {
+  // Create the new document with the same principal as `mOwner`, even if it is
+  // the system principal. This will ensure that nodes from the returned
+  // document are in the same DocGroup as the owner global's document, allowing
+  // nodes to be adopted.
+  nsCOMPtr<nsIPrincipal> docPrincipal = mPrincipal;
+  if (mOwner && mOwner->PrincipalOrNull()) {
+    mPrincipal = mOwner->PrincipalOrNull();
+  }
+
+  RefPtr<Document> ret = ParseFromString(aStr, aType, aRv);
+  mPrincipal = docPrincipal;
+  return ret.forget();
+}
+
+already_AddRefed<Document> DOMParser::ParseFromBuffer(const Uint8Array& aBuf,
+                                                      SupportedType aType,
+                                                      ErrorResult& aRv) {
+  aBuf.ComputeState();
+  return ParseFromBuffer(Span(aBuf.Data(), aBuf.Length()), aType, aRv);
+}
+
+already_AddRefed<Document> DOMParser::ParseFromBuffer(Span<const uint8_t> aBuf,
+                                                      SupportedType aType,
+                                                      ErrorResult& aRv) {
+  // The new stream holds a reference to the buffer
+  nsCOMPtr<nsIInputStream> stream;
+  nsresult rv = NS_NewByteInputStream(
+      getter_AddRefs(stream),
+      Span(reinterpret_cast<const char*>(aBuf.Elements()), aBuf.Length()),
+      NS_ASSIGNMENT_DEPEND);
+  if (NS_FAILED(rv)) {
+    aRv.Throw(rv);
+    return nullptr;
+  }
+
+  return ParseFromStream(stream, VoidString(), aBuf.Length(), aType, aRv);
+}
+
+already_AddRefed<Document> DOMParser::ParseFromStream(nsIInputStream* aStream,
+                                                      const nsAString& aCharset,
+                                                      int32_t aContentLength,
+                                                      SupportedType aType,
+                                                      ErrorResult& aRv) {
+  bool svg = (aType == SupportedType::Image_svg_xml);
+
+  // For now, we can only create XML documents.
+  // XXXsmaug Should we create an HTMLDocument (in XHTML mode)
+  //         for "application/xhtml+xml"?
+  if (aType != SupportedType::Text_xml &&
+      aType != SupportedType::Application_xml &&
+      aType != SupportedType::Application_xhtml_xml && !svg) {
+    aRv.Throw(NS_ERROR_NOT_IMPLEMENTED);
+    return nullptr;
+  }
+
+  // Put the nsCOMPtr out here so we hold a ref to the stream as needed
+  nsCOMPtr<nsIInputStream> stream = aStream;
+  if (!NS_InputStreamIsBuffered(stream)) {
+    nsCOMPtr<nsIInputStream> bufferedStream;
+    nsresult rv = NS_NewBufferedInputStream(getter_AddRefs(bufferedStream),
+                                            stream.forget(), 4096);
+    if (NS_WARN_IF(NS_FAILED(rv))) {
+      aRv.Throw(rv);
+      return nullptr;
+    }
+
+    stream = bufferedStream;
+  }
+
+  nsCOMPtr<Document> document =
+      SetUpDocument(svg ? DocumentFlavorSVG : DocumentFlavorLegacyGuess, aRv);
+  if (NS_WARN_IF(aRv.Failed())) {
+    return nullptr;
+  }
+
+  // Create a fake channel
+  nsCOMPtr<nsIChannel> parserChannel;
+  NS_NewInputStreamChannel(
+      getter_AddRefs(parserChannel), mDocumentURI,
+      nullptr,  // aStream
+      mPrincipal, nsILoadInfo::SEC_FORCE_INHERIT_PRINCIPAL,
+      nsIContentPolicy::TYPE_OTHER,
+      nsDependentCSubstring(SupportedTypeValues::GetString(aType)));
+  if (NS_WARN_IF(!parserChannel)) {
+    aRv.Throw(NS_ERROR_UNEXPECTED);
+    return nullptr;
+  }
+
+  if (!DOMStringIsNull(aCharset)) {
+    parserChannel->SetContentCharset(NS_ConvertUTF16toUTF8(aCharset));
+  }
+
+  // Tell the document to start loading
+  nsCOMPtr<nsIStreamListener> listener;
+
+  // Keep the XULXBL state in sync with the HTML case
+  if (mForceEnableXULXBL) {
+    document->ForceEnableXULXBL();
+  }
+
+  if (mForceEnableDTD) {
+    document->ForceSkipDTDSecurityChecks();
+  }
+
+  // Have to pass false for reset here, else the reset will remove
+  // our event listener.  Should that listener addition move to later
+  // than this call?
+  nsresult rv =
+      document->StartDocumentLoad(kLoadAsData, parserChannel, nullptr, nullptr,
+                                  getter_AddRefs(listener), false);
+
+  if (NS_FAILED(rv) || !listener) {
+    aRv.Throw(NS_ERROR_FAILURE);
+    return nullptr;
+  }
+
+  // Now start pumping data to the listener
+  nsresult status;
+
+  rv = listener->OnStartRequest(parserChannel);
+  if (NS_FAILED(rv)) parserChannel->Cancel(rv);
+  parserChannel->GetStatus(&status);
+
+  if (NS_SUCCEEDED(rv) && NS_SUCCEEDED(status)) {
+    rv = listener->OnDataAvailable(parserChannel, stream, 0, aContentLength);
+    if (NS_FAILED(rv)) parserChannel->Cancel(rv);
+    parserChannel->GetStatus(&status);
+  }
+
+  rv = listener->OnStopRequest(parserChannel, status);
+  // Failure returned from OnStopRequest does not affect the final status of
+  // the channel, so we do not need to call Cancel(rv) as we do above.
+
+  if (NS_FAILED(rv)) {
+    aRv.Throw(NS_ERROR_FAILURE);
+    return nullptr;
+  }
+
+  return document.forget();
+}
+
+/*static */
+already_AddRefed<DOMParser> DOMParser::Constructor(const GlobalObject& aOwner,
+                                                   ErrorResult& rv) {
+  MOZ_ASSERT(NS_IsMainThread());
+  nsCOMPtr<nsIPrincipal> docPrincipal = aOwner.GetSubjectPrincipal();
+  nsCOMPtr<nsIURI> documentURI;
+  nsIURI* baseURI = nullptr;
+  if (docPrincipal->IsSystemPrincipal()) {
+    docPrincipal = NullPrincipal::Create(OriginAttributes());
+    documentURI = docPrincipal->GetURI();
+  } else {
+    // Grab document and base URIs off the window our constructor was
+    // called on. Error out if anything untoward happens.
+    nsCOMPtr<nsPIDOMWindowInner> window =
+        do_QueryInterface(aOwner.GetAsSupports());
+    if (!window) {
+      rv.Throw(NS_ERROR_UNEXPECTED);
+      return nullptr;
+    }
+
+    baseURI = window->GetDocBaseURI();
+    documentURI = window->GetDocumentURI();
+  }
+
+  if (!documentURI) {
+    rv.Throw(NS_ERROR_UNEXPECTED);
+    return nullptr;
+  }
+
+  nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aOwner.GetAsSupports());
+  MOZ_ASSERT(global);
+  RefPtr<DOMParser> domParser =
+      new DOMParser(global, docPrincipal, documentURI, baseURI);
+  return domParser.forget();
+}
+
+// static
+already_AddRefed<DOMParser> DOMParser::CreateWithoutGlobal(ErrorResult& aRv) {
+  nsCOMPtr<nsIPrincipal> docPrincipal =
+      NullPrincipal::Create(OriginAttributes());
+
+  nsCOMPtr<nsIURI> documentURI = docPrincipal->GetURI();
+  if (!documentURI) {
+    aRv.Throw(NS_ERROR_UNEXPECTED);
+    return nullptr;
+  }
+
+  RefPtr<DOMParser> domParser =
+      new DOMParser(nullptr, docPrincipal, documentURI, nullptr);
+  return domParser.forget();
+}
+
+already_AddRefed<Document> DOMParser::SetUpDocument(DocumentFlavor aFlavor,
+                                                    ErrorResult& aRv) {
+  // We should really just use mOwner here, but Document gets confused
+  // if we pass it a scriptHandlingObject that doesn't QI to
+  // nsIScriptGlobalObject, and test_isequalnode.js (an xpcshell test without
+  // a window global) breaks. The correct solution is just to wean Document off
+  // of nsIScriptGlobalObject, but that's a yak to shave another day.
+  nsCOMPtr<nsIScriptGlobalObject> scriptHandlingObject =
+      do_QueryInterface(mOwner);
+
+  // Try to inherit a style backend.
+  NS_ASSERTION(mPrincipal, "Must have principal by now");
+  NS_ASSERTION(mDocumentURI, "Must have document URI by now");
+
+  nsCOMPtr<Document> doc;
+  nsresult rv = NS_NewDOMDocument(getter_AddRefs(doc), u""_ns, u""_ns, nullptr,
+                                  mDocumentURI, mBaseURI, mPrincipal, true,
+                                  scriptHandlingObject, aFlavor);
+  if (NS_WARN_IF(NS_FAILED(rv))) {
+    aRv.Throw(rv);
+    return nullptr;
+  }
+
+  return doc.forget();
+}