Fix infinite recursion in CPDF_Parser::ParseIndirectObjectAt().
[pdfium.git] / core / include / fpdfapi / fpdf_parser.h
index 7cab211..e1a0f5c 100644 (file)
@@ -49,7 +49,7 @@ class CFX_PrivateData;
 class IPDF_EnumPageHandler
 {
 public:
-
+    virtual ~IPDF_EnumPageHandler() { }
     virtual FX_BOOL EnumPage(CPDF_Dictionary* pPageDict) = 0;
 };
 class CPDF_Document : public CFX_PrivateData, public CPDF_IndirectObjects
@@ -134,7 +134,7 @@ public:
 
     CPDF_StreamAcc*                    LoadFontFile(CPDF_Stream* pStream);
 
-    CPDF_IccProfile*           LoadIccProfile(CPDF_Stream* pStream, int nComponents);
+    CPDF_IccProfile*           LoadIccProfile(CPDF_Stream* pStream);
 
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
 
@@ -247,8 +247,7 @@ class CPDF_SyntaxParser : public CFX_Object
 public:
 
     CPDF_SyntaxParser();
-
-    ~CPDF_SyntaxParser();
+    virtual ~CPDF_SyntaxParser();
 
     void                               InitParser(IFX_FileRead* pFileAccess, FX_DWORD HeaderOffset);
 
@@ -262,10 +261,10 @@ public:
         m_Pos = pos;
     }
 
-    CPDF_Object*               GetObject(CPDF_IndirectObjects* pObjList, FX_DWORD objnum, FX_DWORD gennum, int level, struct PARSE_CONTEXT* pContext = NULL, FX_BOOL bDecrypt = TRUE);
+    CPDF_Object*               GetObject(CPDF_IndirectObjects* pObjList, FX_DWORD objnum, FX_DWORD gennum, struct PARSE_CONTEXT* pContext = NULL, FX_BOOL bDecrypt = TRUE);
 
 
-    CPDF_Object*               GetObjectByStrict(CPDF_IndirectObjects* pObjList, FX_DWORD objnum, FX_DWORD gennum, int level, struct PARSE_CONTEXT* pContext = NULL);
+    CPDF_Object*               GetObjectByStrict(CPDF_IndirectObjects* pObjList, FX_DWORD objnum, FX_DWORD gennum, struct PARSE_CONTEXT* pContext = NULL);
 
     int                                        GetDirectNum();
 
@@ -303,6 +302,8 @@ public:
 
     CFX_ByteString             GetNextWord(FX_BOOL& bIsNumber);
 protected:
+    static const int kParserMaxRecursionDepth = 64;
+    static int s_CurrentRecursionDepth;
 
     virtual FX_BOOL                            GetNextChar(FX_BYTE& ch);
 
@@ -366,7 +367,7 @@ struct PARSE_CONTEXT {
 class IPDF_DocParser : public CFX_Object
 {
 public:
-
+    virtual ~IPDF_DocParser() { }
     virtual FX_DWORD   GetRootObjNum() = 0;
 
     virtual FX_DWORD   GetInfoObjNum() = 0;
@@ -402,8 +403,7 @@ class CPDF_Parser FX_FINAL : public IPDF_DocParser
 public:
 
     CPDF_Parser();
-
-    ~CPDF_Parser();
+    ~CPDF_Parser() override;
 
     FX_DWORD                   StartParse(FX_LPCSTR filename, FX_BOOL bReParse = FALSE);
 
@@ -522,7 +522,6 @@ public:
         return m_dwFirstPageNo;
     }
 protected:
-
     CPDF_Document*             m_pDocument;
 
     CPDF_SyntaxParser  m_Syntax;
@@ -853,13 +852,13 @@ protected:
 class IFX_FileAvail
 {
 public:
-
+    virtual ~IFX_FileAvail() { }
     virtual FX_BOOL                    IsDataAvail( FX_FILESIZE offset, FX_DWORD size) = 0;
 };
 class IFX_DownloadHints
 {
 public:
-
+    virtual ~IFX_DownloadHints() { }
     virtual void                       AddSegment(FX_FILESIZE offset, FX_DWORD size) = 0;
 };
 #define PDF_IS_LINEARIZED                      1
@@ -871,22 +870,25 @@ public:
 class IPDF_DataAvail
 {
 public:
+    static IPDF_DataAvail* Create(IFX_FileAvail* pFileAvail, IFX_FileRead* pFileRead);
+    virtual ~IPDF_DataAvail() { }
 
-    virtual FX_BOOL                    IsDocAvail(IFX_DownloadHints* pHints) = 0;
-
+    IFX_FileAvail* GetFileAvail() const { return m_pFileAvail; }
+    IFX_FileRead* GetFileRead() const { return m_pFileRead; }
 
+    virtual FX_BOOL                    IsDocAvail(IFX_DownloadHints* pHints) = 0;
     virtual void                       SetDocument(CPDF_Document* pDoc) = 0;
-
-
     virtual FX_BOOL                    IsPageAvail(int iPage, IFX_DownloadHints* pHints) = 0;
-
     virtual FX_BOOL                    IsLinearized() = 0;
-
     virtual FX_INT32           IsFormAvail(IFX_DownloadHints *pHints) = 0;
-
     virtual FX_INT32           IsLinearizedPDF() = 0;
-
     virtual void                               GetLinearizedMainXRefInfo(FX_FILESIZE *pPos, FX_DWORD *pSize) = 0;
+
+protected:
+    IPDF_DataAvail(IFX_FileAvail* pFileAvail, IFX_FileRead* pFileRead);
+
+    IFX_FileAvail* m_pFileAvail;
+    IFX_FileRead* m_pFileRead;
 };
 class CPDF_SortObjNumArray : public CFX_Object
 {
@@ -945,205 +947,4 @@ enum PDF_DATAAVAIL_STATUS {
     PDF_DATAAVAIL_LOADALLFILE,
     PDF_DATAAVAIL_TRAILER_APPEND
 };
-class CPDF_DataAvail FX_FINAL : public CFX_Object, public IPDF_DataAvail
-{
-public:
-
-    CPDF_DataAvail(IFX_FileAvail* pFileAvail, IFX_FileRead* pFileRead);
-    ~CPDF_DataAvail();
-
-    virtual FX_BOOL                            IsDocAvail(IFX_DownloadHints* pHints)  FX_OVERRIDE;
-
-
-    virtual void                               SetDocument(CPDF_Document* pDoc)  FX_OVERRIDE;
-
-
-    virtual FX_BOOL                            IsPageAvail(int iPage, IFX_DownloadHints* pHints)  FX_OVERRIDE;
-
-    virtual FX_INT32                   IsFormAvail(IFX_DownloadHints *pHints)  FX_OVERRIDE;
-
-    virtual FX_INT32                   IsLinearizedPDF()  FX_OVERRIDE;
-
-    virtual FX_BOOL                            IsLinearized()  FX_OVERRIDE
-    {
-        return m_bLinearized;
-    }
-
-    virtual void                               GetLinearizedMainXRefInfo(FX_FILESIZE *pPos, FX_DWORD *pSize)  FX_OVERRIDE;
-    IFX_FileRead*                              GetFileRead() const
-    {
-        return m_pFileRead;
-    }
-    IFX_FileAvail*                             GetFileAvail() const
-    {
-        return m_pFileAvail;
-    }
-protected:
-    FX_DWORD                                   GetObjectSize(FX_DWORD objnum, FX_FILESIZE& offset);
-    FX_BOOL                                            IsObjectsAvail(CFX_PtrArray& obj_array, FX_BOOL bParsePage, IFX_DownloadHints* pHints, CFX_PtrArray &ret_array);
-    FX_BOOL                                            CheckDocStatus(IFX_DownloadHints *pHints);
-    FX_BOOL                                            CheckHeader(IFX_DownloadHints* pHints);
-    FX_BOOL                                            CheckFirstPage(IFX_DownloadHints *pHints);
-    FX_BOOL                                            CheckEnd(IFX_DownloadHints *pHints);
-    FX_BOOL                                            CheckCrossRef(IFX_DownloadHints* pHints);
-    FX_BOOL                                            CheckCrossRefItem(IFX_DownloadHints *pHints);
-    FX_BOOL                                            CheckTrailer(IFX_DownloadHints* pHints);
-    FX_BOOL                                            CheckRoot(IFX_DownloadHints* pHints);
-    FX_BOOL                                            CheckInfo(IFX_DownloadHints* pHints);
-    FX_BOOL                                            CheckPages(IFX_DownloadHints* pHints);
-    FX_BOOL                                            CheckPage(IFX_DownloadHints* pHints);
-    FX_BOOL                                            CheckResources(IFX_DownloadHints* pHints);
-    FX_BOOL                                            CheckAnnots(IFX_DownloadHints* pHints);
-    FX_BOOL                                            CheckAcroForm(IFX_DownloadHints* pHints);
-    FX_BOOL                                            CheckAcroFormSubObject(IFX_DownloadHints* pHints);
-    FX_BOOL                                            CheckTrailerAppend(IFX_DownloadHints* pHints);
-    FX_BOOL                                            CheckPageStatus(IFX_DownloadHints* pHints);
-    FX_BOOL                                            CheckAllCrossRefStream(IFX_DownloadHints *pHints);
-
-    FX_DWORD                                   CheckCrossRefStream(IFX_DownloadHints *pHints, FX_FILESIZE &xref_offset);
-    FX_BOOL                                            IsLinearizedFile(FX_LPBYTE pData, FX_DWORD dwLen);
-    void                                               SetStartOffset(FX_FILESIZE dwOffset);
-    FX_BOOL                                            GetNextToken(CFX_ByteString &token);
-    FX_BOOL                                            GetNextChar(FX_BYTE &ch);
-    CPDF_Object        *                               ParseIndirectObjectAt(FX_FILESIZE pos, FX_DWORD objnum);
-    CPDF_Object        *                               GetObject(FX_DWORD objnum, IFX_DownloadHints* pHints, FX_BOOL *pExistInFile);
-    FX_BOOL                                            GetPageKids(CPDF_Parser *pParser, CPDF_Object *pPages);
-    FX_BOOL                                            PreparePageItem();
-    FX_BOOL                                            LoadPages(IFX_DownloadHints* pHints);
-    FX_BOOL                                            LoadAllXref(IFX_DownloadHints* pHints);
-    FX_BOOL                                            LoadAllFile(IFX_DownloadHints* pHints);
-    FX_BOOL                                            CheckLinearizedData(IFX_DownloadHints* pHints);
-    FX_BOOL                                            CheckFileResources(IFX_DownloadHints* pHints);
-    FX_BOOL                                            CheckPageAnnots(int iPage, IFX_DownloadHints* pHints);
-
-    FX_BOOL                                            CheckLinearizedFirstPage(int iPage, IFX_DownloadHints* pHints);
-    FX_BOOL                                            HaveResourceAncestor(CPDF_Dictionary *pDict);
-    FX_BOOL                                            CheckPage(FX_INT32 iPage, IFX_DownloadHints* pHints);
-    FX_BOOL                                            LoadDocPages(IFX_DownloadHints* pHints);
-    FX_BOOL                                            LoadDocPage(FX_INT32 iPage, IFX_DownloadHints* pHints);
-    FX_BOOL                                            CheckPageNode(CPDF_PageNode &pageNodes, FX_INT32 iPage, FX_INT32 &iCount, IFX_DownloadHints* pHints);
-    FX_BOOL                                            CheckUnkownPageNode(FX_DWORD dwPageNo, CPDF_PageNode *pPageNode, IFX_DownloadHints* pHints);
-    FX_BOOL                                            CheckArrayPageNode(FX_DWORD dwPageNo, CPDF_PageNode *pPageNode, IFX_DownloadHints* pHints);
-    FX_BOOL                     CheckPageCount(IFX_DownloadHints* pHints);
-    FX_BOOL                                            IsFirstCheck(int iPage);
-    void                                               ResetFirstCheck(int iPage);
-
-    CPDF_Parser                                m_parser;
-
-    CPDF_SyntaxParser          m_syntaxParser;
-
-    CPDF_Object                                *m_pRoot;
-
-    FX_DWORD                           m_dwRootObjNum;
-
-    FX_DWORD                           m_dwInfoObjNum;
-
-    CPDF_Object                                *m_pLinearized;
-
-    CPDF_Object                                *m_pTrailer;
-
-    FX_BOOL                                    m_bDocAvail;
-
-    FX_FILESIZE                                m_dwHeaderOffset;
-
-    FX_FILESIZE                                m_dwLastXRefOffset;
-
-    FX_FILESIZE                                m_dwXRefOffset;
-
-    FX_FILESIZE                                m_dwTrailerOffset;
-
-    FX_FILESIZE                                m_dwCurrentOffset;
-
-    PDF_DATAAVAIL_STATUS       m_docStatus;
-
-    IFX_FileAvail*                     m_pFileAvail;
-
-    IFX_FileRead*                      m_pFileRead;
-
-    FX_FILESIZE                                m_dwFileLen;
-
-    CPDF_Document*                     m_pDocument;
-
-    CPDF_SortObjNumArray       m_objnum_array;
-
-    CFX_PtrArray                       m_objs_array;
-
-    FX_FILESIZE                                m_Pos;
-
-    FX_FILESIZE                                m_bufferOffset;
-
-    FX_DWORD                           m_bufferSize;
-
-    CFX_ByteString                     m_WordBuf;
-
-    FX_BYTE                                    m_WordBuffer[257];
-
-    FX_DWORD                           m_WordSize;
-
-    FX_BYTE                                    m_bufferData[512];
-
-    CFX_FileSizeArray          m_CrossOffset;
-
-    CFX_DWordArray                     m_XRefStreamList;
-
-    CFX_DWordArray                     m_PageObjList;
-
-    FX_DWORD                           m_PagesObjNum;
-
-    FX_BOOL                                    m_bLinearized;
-
-    FX_DWORD                           m_dwFirstPageNo;
-
-    FX_BOOL                                    m_bLinearedDataOK;
-
-    FX_BOOL                                    m_bMainXRefLoad;
-
-    FX_BOOL                                    m_bMainXRefLoadedOK;
-
-    FX_BOOL                                    m_bPagesTreeLoad;
-
-    FX_BOOL                                    m_bPagesLoad;
-
-    CPDF_Parser *                      m_pCurrentParser;
-
-    FX_FILESIZE                                m_dwCurrentXRefSteam;
-
-    FX_BOOL                                    m_bAnnotsLoad;
-
-    FX_BOOL                                    m_bHaveAcroForm;
-
-    FX_DWORD                           m_dwAcroFormObjNum;
-
-    FX_BOOL                                    m_bAcroFormLoad;
-
-    CPDF_Object        *                       m_pAcroForm;
-
-    CFX_PtrArray                       m_arrayAcroforms;
-
-    CPDF_Dictionary *          m_pPageDict;
-
-    CPDF_Object *                      m_pPageResource;
-
-    FX_BOOL                                    m_bNeedDownLoadResource;
-
-    FX_BOOL                                    m_bPageLoadedOK;
-
-    FX_BOOL                                    m_bLinearizedFormParamLoad;
-
-    CFX_PtrArray                       m_PagesArray;
-
-    FX_DWORD                           m_dwEncryptObjNum;
-
-    FX_FILESIZE                                m_dwPrevXRefOffset;
-
-    FX_BOOL                                    m_bTotalLoadPageTree;
-
-    FX_BOOL                                    m_bCurPageDictLoadOK;
-
-    CPDF_PageNode                      m_pageNodes;
-
-    CFX_CMapDWordToDWord *     m_pageMapCheckState;
-
-    CFX_CMapDWordToDWord *     m_pagesLoadState;
-};
 #endif