Add m-esr52 at 52.6.0

1 files changed, 495 insertions, 0 deletions

diff --git a/dom/base/DOMParser.cpp b/dom/base/DOMParser.cpp
new file mode 100644
index 0000000000..55911d4778
--- /dev/null
+++ b/dom/base/DOMParser.cpp
@@ -0,0 +1,495 @@
+/* -*- 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 "nsIDOMDocument.h"
+#include "nsNetUtil.h"
+#include "nsIStreamListener.h"
+#include "nsStringStream.h"
+#include "nsIScriptError.h"
+#include "nsIScriptSecurityManager.h"
+#include "nsCRT.h"
+#include "nsStreamUtils.h"
+#include "nsContentUtils.h"
+#include "nsDOMJSUtils.h"
+#include "nsError.h"
+#include "nsPIDOMWindow.h"
+#include "nsNullPrincipal.h"
+#include "mozilla/LoadInfo.h"
+#include "mozilla/dom/BindingUtils.h"
+#include "mozilla/dom/ScriptSettings.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+DOMParser::DOMParser()
+  : mAttemptedInit(false)
+{
+}
+
+DOMParser::~DOMParser()
+{
+}
+
+// QueryInterface implementation for DOMParser
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMParser)
+  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMParser)
+  NS_INTERFACE_MAP_ENTRY(nsIDOMParser)
+  NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
+NS_INTERFACE_MAP_END
+
+NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DOMParser, mOwner)
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMParser)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMParser)
+
+static const char*
+StringFromSupportedType(SupportedType aType)
+{
+  return SupportedTypeValues::strings[static_cast<int>(aType)].value;
+}
+
+already_AddRefed<nsIDocument>
+DOMParser::ParseFromString(const nsAString& aStr, SupportedType aType,
+                           ErrorResult& rv)
+{
+  nsCOMPtr<nsIDOMDocument> domDocument;
+  rv = ParseFromString(aStr,
+                       StringFromSupportedType(aType),
+                       getter_AddRefs(domDocument));
+  nsCOMPtr<nsIDocument> document(do_QueryInterface(domDocument));
+  return document.forget();
+}
+
+NS_IMETHODIMP 
+DOMParser::ParseFromString(const char16_t *str, 
+                           const char *contentType,
+                           nsIDOMDocument **aResult)
+{
+  NS_ENSURE_ARG(str);
+  // Converting a string to an enum value manually is a bit of a pain,
+  // so let's just use a helper that takes a content-type string.
+  return ParseFromString(nsDependentString(str), contentType, aResult);
+}
+
+nsresult
+DOMParser::ParseFromString(const nsAString& str,
+                           const char *contentType,
+                           nsIDOMDocument **aResult)
+{
+  NS_ENSURE_ARG_POINTER(aResult);
+
+  nsresult rv;
+
+  if (!nsCRT::strcmp(contentType, "text/html")) {
+    nsCOMPtr<nsIDOMDocument> domDocument;
+    rv = SetUpDocument(DocumentFlavorHTML, getter_AddRefs(domDocument));
+    NS_ENSURE_SUCCESS(rv, rv);
+    nsCOMPtr<nsIDocument> document = do_QueryInterface(domDocument);
+
+    // Keep the XULXBL state, base URL and principal setting in sync with the
+    // XML case
+
+    if (nsContentUtils::IsSystemPrincipal(mOriginalPrincipal)) {
+      document->ForceEnableXULXBL();
+    }
+
+    // Make sure to give this document the right base URI
+    document->SetBaseURI(mBaseURI);
+    // And the right principal
+    document->SetPrincipal(mPrincipal);
+
+    rv = nsContentUtils::ParseDocumentHTML(str, document, false);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    domDocument.forget(aResult);
+    return rv;
+  }
+
+  nsAutoCString utf8str;
+  // Convert from UTF16 to UTF8 using fallible allocations
+  if (!AppendUTF16toUTF8(str, utf8str, mozilla::fallible)) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+
+  // The new stream holds a reference to the buffer
+  nsCOMPtr<nsIInputStream> stream;
+  rv = NS_NewByteInputStream(getter_AddRefs(stream),
+                             utf8str.get(), utf8str.Length(),
+                             NS_ASSIGNMENT_DEPEND);
+  if (NS_FAILED(rv))
+    return rv;
+
+  return ParseFromStream(stream, "UTF-8", utf8str.Length(), contentType, aResult);
+}
+
+already_AddRefed<nsIDocument>
+DOMParser::ParseFromBuffer(const Sequence<uint8_t>& aBuf, uint32_t aBufLen,
+                           SupportedType aType, ErrorResult& rv)
+{
+  if (aBufLen > aBuf.Length()) {
+    rv.Throw(NS_ERROR_XPC_NOT_ENOUGH_ELEMENTS_IN_ARRAY);
+    return nullptr;
+  }
+  nsCOMPtr<nsIDOMDocument> domDocument;
+  rv = DOMParser::ParseFromBuffer(aBuf.Elements(), aBufLen,
+                                  StringFromSupportedType(aType),
+                                  getter_AddRefs(domDocument));
+  nsCOMPtr<nsIDocument> document(do_QueryInterface(domDocument));
+  return document.forget();
+}
+
+already_AddRefed<nsIDocument>
+DOMParser::ParseFromBuffer(const Uint8Array& aBuf, uint32_t aBufLen,
+                           SupportedType aType, ErrorResult& rv)
+{
+  aBuf.ComputeLengthAndData();
+
+  if (aBufLen > aBuf.Length()) {
+    rv.Throw(NS_ERROR_XPC_NOT_ENOUGH_ELEMENTS_IN_ARRAY);
+    return nullptr;
+  }
+  nsCOMPtr<nsIDOMDocument> domDocument;
+  rv = DOMParser::ParseFromBuffer(aBuf.Data(), aBufLen,
+                                    StringFromSupportedType(aType),
+                                    getter_AddRefs(domDocument));
+  nsCOMPtr<nsIDocument> document(do_QueryInterface(domDocument));
+  return document.forget();
+}
+
+NS_IMETHODIMP 
+DOMParser::ParseFromBuffer(const uint8_t *buf,
+                           uint32_t bufLen,
+                           const char *contentType,
+                           nsIDOMDocument **aResult)
+{
+  NS_ENSURE_ARG_POINTER(buf);
+  NS_ENSURE_ARG_POINTER(aResult);
+
+  // The new stream holds a reference to the buffer
+  nsCOMPtr<nsIInputStream> stream;
+  nsresult rv = NS_NewByteInputStream(getter_AddRefs(stream),
+                                      reinterpret_cast<const char *>(buf),
+                                      bufLen, NS_ASSIGNMENT_DEPEND);
+  if (NS_FAILED(rv))
+    return rv;
+
+  return ParseFromStream(stream, nullptr, bufLen, contentType, aResult);
+}
+
+
+already_AddRefed<nsIDocument>
+DOMParser::ParseFromStream(nsIInputStream* aStream,
+                           const nsAString& aCharset,
+                           int32_t aContentLength,
+                           SupportedType aType,
+                           ErrorResult& rv)
+{
+  nsCOMPtr<nsIDOMDocument> domDocument;
+  rv = DOMParser::ParseFromStream(aStream,
+                                  NS_ConvertUTF16toUTF8(aCharset).get(),
+                                  aContentLength,
+                                  StringFromSupportedType(aType),
+                                  getter_AddRefs(domDocument));
+  nsCOMPtr<nsIDocument> document(do_QueryInterface(domDocument));
+  return document.forget();
+}
+
+NS_IMETHODIMP 
+DOMParser::ParseFromStream(nsIInputStream *stream, 
+                           const char *charset, 
+                           int32_t contentLength,
+                           const char *contentType,
+                           nsIDOMDocument **aResult)
+{
+  NS_ENSURE_ARG(stream);
+  NS_ENSURE_ARG(contentType);
+  NS_ENSURE_ARG_POINTER(aResult);
+  *aResult = nullptr;
+
+  bool svg = nsCRT::strcmp(contentType, "image/svg+xml") == 0;
+
+  // For now, we can only create XML documents.
+  //XXXsmaug Should we create an HTMLDocument (in XHTML mode)
+  //         for "application/xhtml+xml"?
+  if ((nsCRT::strcmp(contentType, "text/xml") != 0) &&
+      (nsCRT::strcmp(contentType, "application/xml") != 0) &&
+      (nsCRT::strcmp(contentType, "application/xhtml+xml") != 0) &&
+      !svg)
+    return NS_ERROR_NOT_IMPLEMENTED;
+
+  nsresult rv;
+
+  // Put the nsCOMPtr out here so we hold a ref to the stream as needed
+  nsCOMPtr<nsIInputStream> bufferedStream;
+  if (!NS_InputStreamIsBuffered(stream)) {
+    rv = NS_NewBufferedInputStream(getter_AddRefs(bufferedStream), stream,
+                                   4096);
+    NS_ENSURE_SUCCESS(rv, rv);
+
+    stream = bufferedStream;
+  }
+
+  nsCOMPtr<nsIDOMDocument> domDocument;
+  rv = SetUpDocument(svg ? DocumentFlavorSVG : DocumentFlavorLegacyGuess,
+                     getter_AddRefs(domDocument));
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  // Create a fake channel 
+  nsCOMPtr<nsIChannel> parserChannel;
+  NS_NewInputStreamChannel(getter_AddRefs(parserChannel),
+                           mDocumentURI,
+                           nullptr, // aStream
+                           mOriginalPrincipal,
+                           nsILoadInfo::SEC_FORCE_INHERIT_PRINCIPAL,
+                           nsIContentPolicy::TYPE_OTHER,
+                           nsDependentCString(contentType));
+  NS_ENSURE_STATE(parserChannel);
+
+  if (charset) {
+    parserChannel->SetContentCharset(nsDependentCString(charset));
+  }
+
+  // Tell the document to start loading
+  nsCOMPtr<nsIStreamListener> listener;
+
+  // 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?  Then we wouldn't need to mess around with
+  // SetPrincipal, etc, probably!
+  nsCOMPtr<nsIDocument> document(do_QueryInterface(domDocument));
+  if (!document) return NS_ERROR_FAILURE;
+
+  // Keep the XULXBL state, base URL and principal setting in sync with the
+  // HTML case
+
+  if (nsContentUtils::IsSystemPrincipal(mOriginalPrincipal)) {
+    document->ForceEnableXULXBL();
+  }
+
+  rv = document->StartDocumentLoad(kLoadAsData, parserChannel, 
+                                   nullptr, nullptr, 
+                                   getter_AddRefs(listener),
+                                   false);
+
+  // Make sure to give this document the right base URI
+  document->SetBaseURI(mBaseURI);
+
+  // And the right principal
+  document->SetPrincipal(mPrincipal);
+
+  if (NS_FAILED(rv) || !listener) {
+    return NS_ERROR_FAILURE;
+  }
+
+  // Now start pumping data to the listener
+  nsresult status;
+
+  rv = listener->OnStartRequest(parserChannel, nullptr);
+  if (NS_FAILED(rv))
+    parserChannel->Cancel(rv);
+  parserChannel->GetStatus(&status);
+
+  if (NS_SUCCEEDED(rv) && NS_SUCCEEDED(status)) {
+    rv = listener->OnDataAvailable(parserChannel, nullptr, stream, 0,
+                                   contentLength);
+    if (NS_FAILED(rv))
+      parserChannel->Cancel(rv);
+    parserChannel->GetStatus(&status);
+  }
+
+  rv = listener->OnStopRequest(parserChannel, nullptr, 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)) {
+    return NS_ERROR_FAILURE;
+  }
+
+  domDocument.swap(*aResult);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+DOMParser::Init(nsIPrincipal* principal, nsIURI* documentURI,
+                nsIURI* baseURI, nsIGlobalObject* aScriptObject)
+{
+  NS_ENSURE_STATE(!mAttemptedInit);
+  mAttemptedInit = true;
+  NS_ENSURE_ARG(principal || documentURI);
+  mDocumentURI = documentURI;
+  
+  if (!mDocumentURI) {
+    principal->GetURI(getter_AddRefs(mDocumentURI));
+    // If we have the system principal, then we'll just use the null principals
+    // uri.
+    if (!mDocumentURI && !nsContentUtils::IsSystemPrincipal(principal)) {
+      return NS_ERROR_INVALID_ARG;
+    }
+  }
+
+  mScriptHandlingObject = do_GetWeakReference(aScriptObject);
+  mPrincipal = principal;
+  nsresult rv;
+  if (!mPrincipal) {
+    // BUG 1237080 -- in this case we're getting a chrome privilege scripted
+    // DOMParser object creation without an explicit principal set.  This is
+    // now deprecated.
+    nsContentUtils::ReportToConsole(nsIScriptError::warningFlag,
+                                    NS_LITERAL_CSTRING("DOM"),
+                                    nullptr,
+                                    nsContentUtils::eDOM_PROPERTIES,
+                                    "ChromeScriptedDOMParserWithoutPrincipal",
+                                    nullptr,
+                                    0,
+                                    documentURI);
+
+    PrincipalOriginAttributes attrs;
+    mPrincipal = BasePrincipal::CreateCodebasePrincipal(mDocumentURI, attrs);
+    NS_ENSURE_TRUE(mPrincipal, NS_ERROR_FAILURE);
+    mOriginalPrincipal = mPrincipal;
+  } else {
+    mOriginalPrincipal = mPrincipal;
+    if (nsContentUtils::IsSystemPrincipal(mPrincipal)) {
+      // Don't give DOMParsers the system principal.  Use a null
+      // principal instead.
+      mPrincipal = nsNullPrincipal::Create();
+
+      if (!mDocumentURI) {
+        rv = mPrincipal->GetURI(getter_AddRefs(mDocumentURI));
+        NS_ENSURE_SUCCESS(rv, rv);
+      }
+    }
+  }
+  
+  mBaseURI = baseURI;
+  // Note: if mBaseURI is null, fine.  Leave it like that; that will use the
+  // documentURI as the base.  Otherwise for null principals we'll get
+  // nsDocument::SetBaseURI giving errors.
+
+  NS_POSTCONDITION(mPrincipal, "Must have principal");
+  NS_POSTCONDITION(mOriginalPrincipal, "Must have original principal");
+  NS_POSTCONDITION(mDocumentURI, "Must have document URI");
+  return NS_OK;
+}
+
+/*static */already_AddRefed<DOMParser>
+DOMParser::Constructor(const GlobalObject& aOwner,
+                       nsIPrincipal* aPrincipal, nsIURI* aDocumentURI,
+                       nsIURI* aBaseURI, ErrorResult& rv)
+{
+  if (!nsContentUtils::IsCallerChrome()) {
+    rv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+    return nullptr;
+  }
+  RefPtr<DOMParser> domParser = new DOMParser(aOwner.GetAsSupports());
+  rv = domParser->InitInternal(aOwner.GetAsSupports(), aPrincipal, aDocumentURI,
+                               aBaseURI);
+  if (rv.Failed()) {
+    return nullptr;
+  }
+  return domParser.forget();
+}
+
+/*static */already_AddRefed<DOMParser>
+DOMParser::Constructor(const GlobalObject& aOwner,
+                       ErrorResult& rv)
+{
+  RefPtr<DOMParser> domParser = new DOMParser(aOwner.GetAsSupports());
+  rv = domParser->InitInternal(aOwner.GetAsSupports(),
+                               nsContentUtils::SubjectPrincipal(),
+                               nullptr, nullptr);
+  if (rv.Failed()) {
+    return nullptr;
+  }
+  return domParser.forget();
+}
+
+nsresult
+DOMParser::InitInternal(nsISupports* aOwner, nsIPrincipal* prin,
+                        nsIURI* documentURI, nsIURI* baseURI)
+{
+  AttemptedInitMarker marker(&mAttemptedInit);
+  if (!documentURI) {
+    // No explicit documentURI; grab document and base URIs off the window our
+    // constructor was called on. Error out if anything untoward happens.
+
+    // Note that this is a behavior change as far as I can tell -- we're now
+    // using the base URI and document URI of the window off of which the
+    // DOMParser is created, not the window in which parse*() is called.
+    // Does that matter?
+
+    // Also note that |cx| matches what GetDocumentFromContext() would return,
+    // while GetDocumentFromCaller() gives us the window that the DOMParser()
+    // call was made on.
+
+    nsCOMPtr<nsPIDOMWindowInner> window = do_QueryInterface(aOwner);
+    if (!window) {
+      return NS_ERROR_UNEXPECTED;
+    }
+
+    baseURI = window->GetDocBaseURI();
+    documentURI = window->GetDocumentURI();
+    if (!documentURI) {
+      return NS_ERROR_UNEXPECTED;
+    }
+  }
+
+  nsCOMPtr<nsIGlobalObject> scriptglobal = do_QueryInterface(aOwner);
+  return Init(prin, documentURI, baseURI, scriptglobal);
+}
+
+void
+DOMParser::Init(nsIPrincipal* aPrincipal, nsIURI* aDocumentURI,
+                nsIURI* aBaseURI, mozilla::ErrorResult& rv)
+{
+  AttemptedInitMarker marker(&mAttemptedInit);
+
+  nsCOMPtr<nsIPrincipal> principal = aPrincipal;
+  if (!principal && !aDocumentURI) {
+    principal = nsContentUtils::SubjectPrincipal();
+  }
+
+  rv = Init(principal, aDocumentURI, aBaseURI, GetEntryGlobal());
+}
+
+nsresult
+DOMParser::SetUpDocument(DocumentFlavor aFlavor, nsIDOMDocument** aResult)
+{
+  // We should really QI to nsIGlobalObject here, but nsDocument 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 nsDocument
+  // off of nsIScriptGlobalObject, but that's a yak to shave another day.
+  nsCOMPtr<nsIScriptGlobalObject> scriptHandlingObject =
+    do_QueryReferent(mScriptHandlingObject);
+  nsresult rv;
+  if (!mPrincipal) {
+    NS_ENSURE_TRUE(!mAttemptedInit, NS_ERROR_NOT_INITIALIZED);
+    AttemptedInitMarker marker(&mAttemptedInit);
+
+    nsCOMPtr<nsIPrincipal> prin = nsNullPrincipal::Create();
+    rv = Init(prin, nullptr, nullptr, scriptHandlingObject);
+    NS_ENSURE_SUCCESS(rv, rv);
+  }
+
+  NS_ASSERTION(mPrincipal, "Must have principal by now");
+  NS_ASSERTION(mDocumentURI, "Must have document URI by now");
+
+  // Here we have to cheat a little bit...  Setting the base URI won't
+  // work if the document has a null principal, so use
+  // mOriginalPrincipal when creating the document, then reset the
+  // principal.
+  return NS_NewDOMDocument(aResult, EmptyString(), EmptyString(), nullptr,
+                           mDocumentURI, mBaseURI,
+                           mOriginalPrincipal,
+                           true,
+                           scriptHandlingObject,
+                           aFlavor);
+}