txXMLParser.cpp - mozsearch

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/* -*- Mode: C++; tab-width: 4; 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 "txXMLParser.h"

#include "txURIUtils.h"

#include "txXPathTreeWalker.h"

#include "mozilla/dom/Document.h"

#include "nsSyncLoadService.h"

#include "nsNetUtil.h"

#include "nsIURI.h"

using namespace mozilla::dom;

nsresult txParseDocumentFromURI(const nsAString& aHref,

                                const txXPathNode& aLoader, nsAString& aErrMsg,

                                txXPathNode** aResult) {

  NS_ENSURE_ARG_POINTER(aResult);

  *aResult = nullptr;

  nsCOMPtr<nsIURI> documentURI;

  nsresult rv = NS_NewURI(getter_AddRefs(documentURI), aHref);

  NS_ENSURE_SUCCESS(rv, rv);

  Document* loaderDocument = txXPathNativeNode::getDocument(aLoader);

  nsCOMPtr<nsILoadGroup> loadGroup = loaderDocument->GetDocumentLoadGroup();

  // For the system principal loaderUri will be null here, which is good

  // since that means that chrome documents can load any uri.

  // Raw pointer, we want the resulting txXPathNode to hold a reference to

  // the document.

  Document* theDocument = nullptr;

  nsAutoSyncOperation sync(loaderDocument,

                           SyncOperationBehavior::eSuspendInput);

  rv = nsSyncLoadService::LoadDocument(

      documentURI, nsIContentPolicy::TYPE_INTERNAL_XMLHTTPREQUEST_SYNC,

      loaderDocument->NodePrincipal(),

      nsILoadInfo::SEC_REQUIRE_CORS_INHERITS_SEC_CONTEXT, loadGroup,

      loaderDocument->CookieJarSettings(), true,

      loaderDocument->GetReferrerPolicy(), &theDocument);

  if (NS_FAILED(rv)) {

    aErrMsg.AppendLiteral("Document load of ");

    aErrMsg.Append(aHref);

    aErrMsg.AppendLiteral(" failed.");

    return NS_FAILED(rv) ? rv : NS_ERROR_FAILURE;

  *aResult = txXPathNativeNode::createXPathNode(theDocument);

  if (!*aResult) {

    NS_RELEASE(theDocument);

    return NS_ERROR_FAILURE;

  return NS_OK;