Make checkdeps --resolve-dotdot succeed.

core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp

 // Copyright 2014 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
 
 #include <set>
 #include <utility>
 #include <vector>
 
@@ skipping 2660 matching lines @@
   }
 }
 
 class CPDF_DataAvail final : public IPDF_DataAvail {
  public:
   CPDF_DataAvail(IFX_FileAvail* pFileAvail,
                  IFX_FileRead* pFileRead,
                  FX_BOOL bSupportHintTable);
   ~CPDF_DataAvail() override;
 
-  int IsDocAvail(IFX_DownloadHints* pHints) override;
+  // IPDF_DataAvail:
+  DocAvailStatus IsDocAvail(IFX_DownloadHints* pHints) override;
+  void SetDocument(CPDF_Document* pDoc) override;
+  int IsPageAvail(int iPage, IFX_DownloadHints* pHints) override;
+  DocFormStatus IsFormAvail(IFX_DownloadHints* pHints) override;
+  DocLinearizationStatus IsLinearizedPDF() override;
+  FX_BOOL IsLinearized() override { return m_bLinearized; }
+  void GetLinearizedMainXRefInfo(FX_FILESIZE* pPos, FX_DWORD* pSize) override;
 
-  void SetDocument(CPDF_Document* pDoc) override;
-
-  int IsPageAvail(int iPage, IFX_DownloadHints* pHints) override;
-
-  int IsFormAvail(IFX_DownloadHints* pHints) override;
-
-  int IsLinearizedPDF() override;
-
-  FX_BOOL IsLinearized() override { return m_bLinearized; }
-
-  void GetLinearizedMainXRefInfo(FX_FILESIZE* pPos, FX_DWORD* pSize) override;
   int GetPageCount() const;
   CPDF_Dictionary* GetPage(int index);
 
   friend class CPDF_HintTables;
 
  protected:
   static const int kMaxDataAvailRecursionDepth = 64;
   static int s_CurrentDataAvailRecursionDepth;
   static const int kMaxPageRecursionDepth = 1024;
 
@@ skipping 369 matching lines @@
       } else {
         ret_array.Add(pObj);
       }
     }
     return FALSE;
   }
   obj_array.RemoveAll();
   obj_array.Append(new_obj_array);
   return IsObjectsAvail(obj_array, FALSE, pHints, ret_array);
 }
-int CPDF_DataAvail::IsDocAvail(IFX_DownloadHints* pHints) {
+
+IPDF_DataAvail::DocAvailStatus CPDF_DataAvail::IsDocAvail(
+    IFX_DownloadHints* pHints) {
   if (!m_dwFileLen && m_pFileRead) {
     m_dwFileLen = (FX_DWORD)m_pFileRead->GetSize();
     if (!m_dwFileLen) {
-      return PDF_DATA_ERROR;
+      return DataError;
     }
   }
   while (!m_bDocAvail) {
     if (!CheckDocStatus(pHints)) {
-      return PDF_DATA_NOTAVAIL;
+      return DataNotAvailable;
     }
   }
-  return PDF_DATA_AVAIL;
+  return DataAvailable;
 }
+
 FX_BOOL CPDF_DataAvail::CheckAcroFormSubObject(IFX_DownloadHints* pHints) {
   if (!m_objs_array.GetSize()) {
     m_objs_array.RemoveAll();
     m_objnum_array.RemoveAll();
     CFX_PtrArray obj_array;
     obj_array.Append(m_arrayAcroforms);
     FX_BOOL bRet = IsObjectsAvail(obj_array, FALSE, pHints, m_objs_array);
     if (bRet) {
       m_objs_array.RemoveAll();
     }
@@ skipping 530 matching lines @@
   FX_DWORD gennum = FXSYS_atoi(word);
   if (m_syntaxParser.GetKeyword() != FX_BSTRC("obj")) {
     m_syntaxParser.RestorePos(SavedPos);
     return NULL;
   }
   CPDF_Object* pObj =
       m_syntaxParser.GetObject(pObjList, parser_objnum, gennum, 0);
   m_syntaxParser.RestorePos(SavedPos);
   return pObj;
 }
-int CPDF_DataAvail::IsLinearizedPDF() {
+IPDF_DataAvail::DocLinearizationStatus CPDF_DataAvail::IsLinearizedPDF() {
   FX_DWORD req_size = 1024;
   if (!m_pFileAvail->IsDataAvail(0, req_size)) {
-    return PDF_LINEARIZATION_UNKNOWN;
+    return LinearizationUnknown;
   }
   if (!m_pFileRead) {
-    return PDF_NOT_LINEARIZED;
+    return NotLinearized;
   }
   FX_FILESIZE dwSize = m_pFileRead->GetSize();
   if (dwSize < (FX_FILESIZE)req_size) {
-    return PDF_LINEARIZATION_UNKNOWN;
+    return LinearizationUnknown;
   }
   uint8_t buffer[1024];
   m_pFileRead->ReadBlock(buffer, 0, req_size);
   if (IsLinearizedFile(buffer, req_size)) {
-    return PDF_LINEARIZED;
+    return Linearized;
   }
-  return PDF_NOT_LINEARIZED;
+  return NotLinearized;
 }
 FX_BOOL CPDF_DataAvail::IsLinearizedFile(uint8_t* pData, FX_DWORD dwLen) {
   ScopedFileStream file(FX_CreateMemoryStream(pData, (size_t)dwLen, FALSE));
   int32_t offset = GetHeaderOffset(file.get());
   if (offset == -1) {
     m_docStatus = PDF_DATAAVAIL_ERROR;
     return FALSE;
   }
   m_dwHeaderOffset = offset;
   m_syntaxParser.InitParser(file.get(), offset);
@@ skipping 596 matching lines @@
     }
   }
   if (m_bPagesLoad) {
     return TRUE;
   }
   m_pDocument->LoadPages();
   return FALSE;
 }
 int CPDF_DataAvail::CheckLinearizedData(IFX_DownloadHints* pHints) {
   if (m_bLinearedDataOK) {
-    return PDF_DATA_AVAIL;
+    return DataAvailable;
   }
 
   if (!m_bMainXRefLoadTried) {
     FX_SAFE_DWORD data_size = m_dwFileLen;
     data_size -= m_dwLastXRefOffset;
     if (!data_size.IsValid()) {
-      return PDF_DATA_ERROR;
+      return DataError;
     }
     if (!m_pFileAvail->IsDataAvail(m_dwLastXRefOffset,
                                    data_size.ValueOrDie())) {
       pHints->AddSegment(m_dwLastXRefOffset, data_size.ValueOrDie());
-      return PDF_DATA_NOTAVAIL;
+      return DataNotAvailable;
     }
     FX_DWORD dwRet = (m_pDocument->GetParser())->LoadLinearizedMainXRefTable();
     m_bMainXRefLoadTried = TRUE;
     if (dwRet != PDFPARSE_ERROR_SUCCESS) {
-      return PDF_DATA_ERROR;
+      return DataError;
     }
     if (!PreparePageItem()) {
-      return PDF_DATA_NOTAVAIL;
+      return DataNotAvailable;
     }
     m_bMainXRefLoadedOK = TRUE;
     m_bLinearedDataOK = TRUE;
   }
 
-  return m_bLinearedDataOK ? PDF_DATA_AVAIL : PDF_DATA_NOTAVAIL;
+  return m_bLinearedDataOK ? DataAvailable : DataNotAvailable;
 }
 FX_BOOL CPDF_DataAvail::CheckPageAnnots(int32_t iPage,
                                         IFX_DownloadHints* pHints) {
   if (!m_objs_array.GetSize()) {
     m_objs_array.RemoveAll();
     m_objnum_array.RemoveAll();
     CPDF_Dictionary* pPageDict = m_pDocument->GetPage(iPage);
     if (!pPageDict) {
       return TRUE;
     }
@@ skipping 47 matching lines @@
   }
   CPDF_Object* pRet = pParentDict->GetElement("Resources");
   if (pRet) {
     m_pPageResource = pRet;
     return TRUE;
   }
   return HaveResourceAncestor(pParentDict);
 }
 int CPDF_DataAvail::IsPageAvail(int32_t iPage, IFX_DownloadHints* pHints) {
   if (!m_pDocument) {
-    return PDF_DATA_ERROR;
+    return DataError;
   }
   if (IsFirstCheck(iPage)) {
     m_bCurPageDictLoadOK = FALSE;
     m_bPageLoadedOK = FALSE;
     m_bAnnotsLoad = FALSE;
     m_bNeedDownLoadResource = FALSE;
     m_objs_array.RemoveAll();
     m_objnum_array.RemoveAll();
   }
   if (m_pagesLoadState.find(iPage) != m_pagesLoadState.end()) {
-    return PDF_DATA_AVAIL;
+    return DataAvailable;
   }
   if (m_bLinearized) {
     if ((FX_DWORD)iPage == m_dwFirstPageNo) {
       m_pagesLoadState.insert(iPage);
-      return PDF_DATA_AVAIL;
+      return DataAvailable;
     }
     int32_t nResult = CheckLinearizedData(pHints);
-    if (nResult != PDF_DATA_AVAIL) {
+    if (nResult != DataAvailable) {
       return nResult;
     }
     if (m_pHintTables) {
       nResult = m_pHintTables->CheckPage(iPage, pHints);
-      if (nResult != PDF_DATA_AVAIL)
+      if (nResult != DataAvailable)
         return nResult;
       m_pagesLoadState.insert(iPage);
-      return PDF_DATA_AVAIL;
+      return DataAvailable;
     }
     if (m_bMainXRefLoadedOK) {
       if (m_bTotalLoadPageTree) {
         if (!LoadPages(pHints)) {
-          return PDF_DATA_NOTAVAIL;
+          return DataNotAvailable;
         }
       } else {
         if (!m_bCurPageDictLoadOK && !CheckPage(iPage, pHints)) {
-          return PDF_DATA_NOTAVAIL;
+          return DataNotAvailable;
         }
       }
     } else {
       if (!LoadAllFile(pHints)) {
-        return PDF_DATA_NOTAVAIL;
+        return DataNotAvailable;
       }
       ((CPDF_Parser*)m_pDocument->GetParser())->RebuildCrossRef();
       ResetFirstCheck(iPage);
-      return PDF_DATA_AVAIL;
+      return DataAvailable;
     }
   } else {
     if (!m_bTotalLoadPageTree) {
       if (!m_bCurPageDictLoadOK && !CheckPage(iPage, pHints)) {
-        return PDF_DATA_NOTAVAIL;
+        return DataNotAvailable;
       }
     }
   }
   if (m_bHaveAcroForm && !m_bAcroFormLoad) {
     if (!CheckAcroFormSubObject(pHints)) {
-      return PDF_DATA_NOTAVAIL;
+      return DataNotAvailable;
     }
     m_bAcroFormLoad = TRUE;
   }
   if (!m_bPageLoadedOK) {
     if (!m_objs_array.GetSize()) {
       m_objs_array.RemoveAll();
       m_objnum_array.RemoveAll();
       m_pPageDict = m_pDocument->GetPage(iPage);
       if (!m_pPageDict) {
         ResetFirstCheck(iPage);
-        return PDF_DATA_AVAIL;
+        return DataAvailable;
       }
       CFX_PtrArray obj_array;
       obj_array.Add(m_pPageDict);
       FX_BOOL bRet = IsObjectsAvail(obj_array, TRUE, pHints, m_objs_array);
       if (bRet) {
         m_objs_array.RemoveAll();
         m_bPageLoadedOK = TRUE;
       } else {
         return bRet;
       }
     } else {
       CFX_PtrArray new_objs_array;
       FX_BOOL bRet =
           IsObjectsAvail(m_objs_array, FALSE, pHints, new_objs_array);
       m_objs_array.RemoveAll();
       if (bRet) {
         m_bPageLoadedOK = TRUE;
       } else {
         m_objs_array.Append(new_objs_array);
-        return PDF_DATA_NOTAVAIL;
+        return DataNotAvailable;
       }
     }
   }
   if (m_bPageLoadedOK) {
     if (!m_bAnnotsLoad) {
       if (!CheckPageAnnots(iPage, pHints)) {
-        return PDF_DATA_NOTAVAIL;
+        return DataNotAvailable;
       }
       m_bAnnotsLoad = TRUE;
     }
   }
   if (m_pPageDict && !m_bNeedDownLoadResource) {
     m_pPageResource = m_pPageDict->GetElement("Resources");
     if (!m_pPageResource) {
       m_bNeedDownLoadResource = HaveResourceAncestor(m_pPageDict);
     } else {
       m_bNeedDownLoadResource = TRUE;
     }
   }
   if (m_bNeedDownLoadResource) {
     FX_BOOL bRet = CheckResources(pHints);
     if (!bRet) {
-      return PDF_DATA_NOTAVAIL;
+      return DataNotAvailable;
     }
     m_bNeedDownLoadResource = FALSE;
   }
   m_bPageLoadedOK = FALSE;
   m_bAnnotsLoad = FALSE;
   m_bCurPageDictLoadOK = FALSE;
   ResetFirstCheck(iPage);
   m_pagesLoadState.insert(iPage);
-  return PDF_DATA_AVAIL;
+  return DataAvailable;
 }
 FX_BOOL CPDF_DataAvail::CheckResources(IFX_DownloadHints* pHints) {
   if (!m_objs_array.GetSize()) {
     m_objs_array.RemoveAll();
     CFX_PtrArray obj_array;
     obj_array.Add(m_pPageResource);
     FX_BOOL bRet = IsObjectsAvail(obj_array, TRUE, pHints, m_objs_array);
     if (bRet) {
       m_objs_array.RemoveAll();
     }
@@ skipping 45 matching lines @@
       CPDF_Object* pPageDict = ParseIndirectObjectAt(0, dwObjNum, m_pDocument);
       if (!pPageDict) {
         return nullptr;
       }
       m_pDocument->InsertIndirectObject(dwObjNum, pPageDict);
       return pPageDict->GetDict();
     }
   }
   return m_pDocument->GetPage(index);
 }
-int CPDF_DataAvail::IsFormAvail(IFX_DownloadHints* pHints) {
+IPDF_DataAvail::DocFormStatus CPDF_DataAvail::IsFormAvail(
+    IFX_DownloadHints* pHints) {
   if (!m_pDocument) {
-    return PDF_FORM_AVAIL;
+    return FormAvailable;
   }
   if (!m_bLinearizedFormParamLoad) {
     CPDF_Dictionary* pRoot = m_pDocument->GetRoot();
     if (!pRoot) {
-      return PDF_FORM_AVAIL;
+      return FormAvailable;
     }
     CPDF_Object* pAcroForm = pRoot->GetElement(FX_BSTRC("AcroForm"));
     if (!pAcroForm) {
-      return PDF_FORM_NOTEXIST;
+      return FormNotExist;
     }
     if (!CheckLinearizedData(pHints)) {
-      return PDF_FORM_NOTAVAIL;
+      return FormNotAvailable;
     }
     if (!m_objs_array.GetSize()) {
       m_objs_array.Add(pAcroForm->GetDict());
     }
     m_bLinearizedFormParamLoad = TRUE;
   }
   CFX_PtrArray new_objs_array;
   FX_BOOL bRet = IsObjectsAvail(m_objs_array, FALSE, pHints, new_objs_array);
   m_objs_array.RemoveAll();
   if (!bRet) {
     m_objs_array.Append(new_objs_array);
-    return PDF_FORM_NOTAVAIL;
+    return FormNotAvailable;
   }
-  return PDF_FORM_AVAIL;
+  return FormAvailable;
 }
 void CPDF_SortObjNumArray::AddObjNum(FX_DWORD dwObjNum) {
   int32_t iNext = 0;
   if (BinarySearch(dwObjNum, iNext)) {
     return;
   }
   m_number_array.InsertAt(iNext, dwObjNum);
 }
 FX_BOOL CPDF_SortObjNumArray::Find(FX_DWORD dwObjNum) {
   int32_t iNext = 0;
@@ skipping 263 matching lines @@
   dwObjNum = 1;
   for (int i = 0; i < index; ++i) {
     if (i == nFirstPageNum)
       continue;
     dwObjNum += m_dwDeltaNObjsArray[i];
   }
   return TRUE;
 }
 int32_t CPDF_HintTables::CheckPage(int index, IFX_DownloadHints* pHints) {
   if (!m_pLinearizedDict || !pHints)
-    return PDF_DATA_ERROR;
+    return IPDF_DataAvail::DataError;
   CPDF_Object* pFirstAvailPage =
       m_pLinearizedDict->GetElementValue(FX_BSTRC("P"));
   int nFirstAvailPage = pFirstAvailPage ? pFirstAvailPage->GetInteger() : 0;
   if (index == nFirstAvailPage)
-    return PDF_DATA_AVAIL;
+    return IPDF_DataAvail::DataAvailable;
   FX_DWORD dwLength = GetItemLength(index, m_szPageOffsetArray);
   if (!dwLength ||
       !m_pDataAvail->IsDataAvail(m_szPageOffsetArray[index], dwLength,
                                  pHints)) {
-    return PDF_DATA_NOTAVAIL;
+    return IPDF_DataAvail::DataNotAvailable;
   }
   // Download data of shared objects in the page.
   FX_DWORD offset = 0;
   for (int i = 0; i < index; ++i) {
     offset += m_dwNSharedObjsArray[i];
   }
   CPDF_Object* pFirstPageObj =
       m_pLinearizedDict->GetElementValue(FX_BSTRC("O"));
   int nFirstPageObjNum = pFirstPageObj ? pFirstPageObj->GetInteger() : -1;
   if (nFirstPageObjNum < 0)
-    return FALSE;
+    return FALSE;  // TODO(thestig): Fix this and the return type.
   FX_DWORD dwIndex = 0;
   FX_DWORD dwObjNum = 0;
   for (int j = 0; j < m_dwNSharedObjsArray[index]; ++j) {
     dwIndex = m_dwIdentifierArray[offset + j];
     dwObjNum = m_dwSharedObjNumArray[dwIndex];
     if (dwObjNum >= nFirstPageObjNum &&
         dwObjNum < nFirstPageObjNum + m_nFirstPageSharedObjs) {
       continue;
     }
     dwLength = GetItemLength(dwIndex, m_szSharedObjOffsetArray);
     if (!dwLength ||
         !m_pDataAvail->IsDataAvail(m_szSharedObjOffsetArray[dwIndex], dwLength,
                                    pHints)) {
-      return PDF_DATA_NOTAVAIL;
+      return IPDF_DataAvail::DataNotAvailable;
     }
   }
-  return PDF_DATA_AVAIL;
+  return IPDF_DataAvail::DataAvailable;
 }
 FX_BOOL CPDF_HintTables::LoadHintStream(CPDF_Stream* pHintStream) {
   if (!pHintStream || !m_pLinearizedDict)
     return FALSE;
   CPDF_Dictionary* pDict = pHintStream->GetDict();
   CPDF_Object* pOffset = pDict ? pDict->GetElement(FX_BSTRC("S")) : nullptr;
   if (!pOffset || pOffset->GetType() != PDFOBJ_NUMBER)
     return FALSE;
   CPDF_StreamAcc acc;
   acc.LoadAllData(pHintStream);
@@ skipping 25 matching lines @@
   if (!m_pLinearizedDict)
     return -1;
   CPDF_Array* pRange = m_pLinearizedDict->GetArray(FX_BSTRC("H"));
   if (!pRange)
     return -1;
   CPDF_Object* pStreamLen = pRange->GetElementValue(1);
   if (!pStreamLen)
     return -1;
   return pStreamLen->GetInteger();
 }