dom/xslt/xml/txXMLParser.cpp

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "txXMLParser.h"
   7 #include "txURIUtils.h"
   8 #include "txXPathTreeWalker.h"
   9
  10 #include "nsIDocument.h"
  11 #include "nsIDOMDocument.h"
  12 #include "nsSyncLoadService.h"
  13 #include "nsNetUtil.h"
  14 #include "nsIPrincipal.h"
  15
  16 nsresult
  17 txParseDocumentFromURI(const nsAString& aHref, const txXPathNode& aLoader,
  18                        nsAString& aErrMsg, txXPathNode** aResult)
  19 {
  20     NS_ENSURE_ARG_POINTER(aResult);
  21     *aResult = nullptr;
  22     nsCOMPtr<nsIURI> documentURI;
  23     nsresult rv = NS_NewURI(getter_AddRefs(documentURI), aHref);
  24     NS_ENSURE_SUCCESS(rv, rv);
  25
  26     nsIDocument* loaderDocument = txXPathNativeNode::getDocument(aLoader);
  27
  28     nsCOMPtr<nsILoadGroup> loadGroup = loaderDocument->GetDocumentLoadGroup();
  29
  30     // For the system principal loaderUri will be null here, which is good
  31     // since that means that chrome documents can load any uri.
  32
  33     // Raw pointer, we want the resulting txXPathNode to hold a reference to
  34     // the document.
  35     nsIDOMDocument* theDocument = nullptr;
  36     nsAutoSyncOperation sync(loaderDocument);
  37     rv = nsSyncLoadService::LoadDocument(documentURI,
  38                                          loaderDocument->NodePrincipal(),
  39                                          loadGroup, true, &theDocument);
  40
  41     if (NS_FAILED(rv)) {
  42         aErrMsg.AppendLiteral("Document load of ");
  43         aErrMsg.Append(aHref);
  44         aErrMsg.AppendLiteral(" failed.");
  45         return NS_FAILED(rv) ? rv : NS_ERROR_FAILURE;
  46     }
  47
  48     *aResult = txXPathNativeNode::createXPathNode(theDocument);
  49     if (!*aResult) {
  50         NS_RELEASE(theDocument);
  51         return NS_ERROR_FAILURE;
  52     }
  53
  54     return NS_OK;
  55 }