Do not load main cross refs for first page in linearized pdf.

core/fpdfapi/parser/cpdf_data_avail.h

 // Copyright 2016 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef CORE_FPDFAPI_PARSER_CPDF_DATA_AVAIL_H_
 #define CORE_FPDFAPI_PARSER_CPDF_DATA_AVAIL_H_
 
 #include <vector>
 
 #include "core/fpdfapi/parser/cpdf_parser.h"
 #include "core/fpdfapi/parser/cpdf_syntax_parser.h"
 #include "core/fxcrt/fx_basic.h"
 
 class CPDF_Dictionary;
 class CPDF_HintTables;
 class CPDF_IndirectObjectHolder;
 class CPDF_LinearizedHeader;
 class CPDF_Parser;
 
 enum PDF_DATAAVAIL_STATUS {
   PDF_DATAAVAIL_HEADER = 0,
   PDF_DATAAVAIL_FIRSTPAGE,
-  PDF_DATAAVAIL_FIRSTPAGE_PREPARE,
   PDF_DATAAVAIL_HINTTABLE,
   PDF_DATAAVAIL_END,
   PDF_DATAAVAIL_CROSSREF,
   PDF_DATAAVAIL_CROSSREF_ITEM,
   PDF_DATAAVAIL_CROSSREF_STREAM,
   PDF_DATAAVAIL_TRAILER,
   PDF_DATAAVAIL_LOADALLCROSSREF,
   PDF_DATAAVAIL_ROOT,
   PDF_DATAAVAIL_INFO,
   PDF_DATAAVAIL_ACROFORM,
@@ skipping 149 matching lines @@
   bool CheckUnkownPageNode(uint32_t dwPageNo,
                            PageNode* pPageNode,
                            DownloadHints* pHints);
   bool CheckArrayPageNode(uint32_t dwPageNo,
                           PageNode* pPageNode,
                           DownloadHints* pHints);
   bool CheckPageCount(DownloadHints* pHints);
   bool IsFirstCheck(uint32_t dwPage);
   void ResetFirstCheck(uint32_t dwPage);
   bool IsDataAvail(FX_FILESIZE offset, uint32_t size, DownloadHints* pHints);
+  bool ValidatePage(uint32_t dwPage);
+  bool ValidateForm();
 
   FileAvail* const m_pFileAvail;
   IFX_SeekableReadStream* const m_pFileRead;
   CPDF_Parser m_parser;
   CPDF_SyntaxParser m_syntaxParser;
   std::unique_ptr<CPDF_Object> m_pRoot;
   uint32_t m_dwRootObjNum;
   uint32_t m_dwInfoObjNum;
   std::unique_ptr<CPDF_LinearizedHeader> m_pLinearized;
   CPDF_Object* m_pTrailer;
@@ skipping 40 matching lines @@
   bool m_bTotalLoadPageTree;
   bool m_bCurPageDictLoadOK;
   PageNode m_pageNodes;
   std::set<uint32_t> m_pageMapCheckState;
   std::set<uint32_t> m_pagesLoadState;
   std::unique_ptr<CPDF_HintTables> m_pHintTables;
   bool m_bSupportHintTable;
 };
 
 #endif  // CORE_FPDFAPI_PARSER_CPDF_DATA_AVAIL_H_