Split off IPDF_CryptoHandler into its own .cpp/.h files

core/include/fpdfapi/fpdf_parser.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_INCLUDE_FPDFAPI_FPDF_PARSER_H_
 #define CORE_INCLUDE_FPDFAPI_FPDF_PARSER_H_
 
 #include <map>
 #include <memory>
 #include <set>
 
 #include "core/include/fpdfapi/fpdf_objects.h"
 #include "core/include/fxcrt/fx_basic.h"
 
 class CFX_Font;
 class CFX_Matrix;
 class CPDF_ColorSpace;
-class CPDF_CryptoHandler;
+class IPDF_CryptoHandler;
 class CPDF_Document;
 class CPDF_DocPageData;
 class CPDF_DocRenderData;
 class CPDF_Font;
 class CPDF_FontEncoding;
 class CPDF_IccProfile;
 class CPDF_Image;
 class CPDF_Object;
 class CPDF_Parser;
 class CPDF_Pattern;
 class CPDF_StandardSecurityHandler;
 class CPDF_SyntaxParser;
 class IPDF_SecurityHandler;
 
 #define FPDFPERM_PRINT 0x0004
 #define FPDFPERM_MODIFY 0x0008
 #define FPDFPERM_EXTRACT 0x0010
 #define FPDFPERM_ANNOT_FORM 0x0020
 #define FPDFPERM_FILL_FORM 0x0100
 #define FPDFPERM_EXTRACT_ACCESS 0x0200
 #define FPDFPERM_ASSEMBLE 0x0400
 #define FPDFPERM_PRINT_HIGH 0x0800
 #define FPDF_PAGE_MAX_NUM 0xFFFFF
 
 // Indexed by 8-bit char code, contains unicode code points.
 extern const FX_WORD PDFDocEncoding[256];
 
-class CPDF_CryptoHandler {
- public:
-  virtual ~CPDF_CryptoHandler() {}
-
-  virtual FX_BOOL Init(CPDF_Dictionary* pEncryptDict,
-                       IPDF_SecurityHandler* pSecurityHandler) = 0;
-
-  virtual FX_DWORD DecryptGetSize(FX_DWORD src_size) = 0;
-
-  virtual void* DecryptStart(FX_DWORD objnum, FX_DWORD gennum) = 0;
-
-  virtual FX_BOOL DecryptStream(void* context,
-                                const uint8_t* src_buf,
-                                FX_DWORD src_size,
-                                CFX_BinaryBuf& dest_buf) = 0;
-
-  virtual FX_BOOL DecryptFinish(void* context, CFX_BinaryBuf& dest_buf) = 0;
-
-  virtual FX_DWORD EncryptGetSize(FX_DWORD objnum,
-                                  FX_DWORD version,
-                                  const uint8_t* src_buf,
-                                  FX_DWORD src_size) = 0;
-
-  virtual FX_BOOL EncryptContent(FX_DWORD objnum,
-                                 FX_DWORD version,
-                                 const uint8_t* src_buf,
-                                 FX_DWORD src_size,
-                                 uint8_t* dest_buf,
-                                 FX_DWORD& dest_size) = 0;
-
-  void Decrypt(FX_DWORD objnum, FX_DWORD version, CFX_ByteString& str);
-};
-
-class CPDF_StandardCryptoHandler : public CPDF_CryptoHandler {
- public:
-  CPDF_StandardCryptoHandler();
-  ~CPDF_StandardCryptoHandler() override;
-
-  // CPDF_CryptoHandler
-  FX_BOOL Init(CPDF_Dictionary* pEncryptDict,
-               IPDF_SecurityHandler* pSecurityHandler) override;
-  FX_DWORD DecryptGetSize(FX_DWORD src_size) override;
-  void* DecryptStart(FX_DWORD objnum, FX_DWORD gennum) override;
-  FX_BOOL DecryptStream(void* context,
-                        const uint8_t* src_buf,
-                        FX_DWORD src_size,
-                        CFX_BinaryBuf& dest_buf) override;
-  FX_BOOL DecryptFinish(void* context, CFX_BinaryBuf& dest_buf) override;
-  FX_DWORD EncryptGetSize(FX_DWORD objnum,
-                          FX_DWORD version,
-                          const uint8_t* src_buf,
-                          FX_DWORD src_size) override;
-  FX_BOOL EncryptContent(FX_DWORD objnum,
-                         FX_DWORD version,
-                         const uint8_t* src_buf,
-                         FX_DWORD src_size,
-                         uint8_t* dest_buf,
-                         FX_DWORD& dest_size) override;
-
-  FX_BOOL Init(int cipher, const uint8_t* key, int keylen);
-
- protected:
-  virtual void CryptBlock(FX_BOOL bEncrypt,
-                          FX_DWORD objnum,
-                          FX_DWORD gennum,
-                          const uint8_t* src_buf,
-                          FX_DWORD src_size,
-                          uint8_t* dest_buf,
-                          FX_DWORD& dest_size);
-  virtual void* CryptStart(FX_DWORD objnum, FX_DWORD gennum, FX_BOOL bEncrypt);
-  virtual FX_BOOL CryptStream(void* context,
-                              const uint8_t* src_buf,
-                              FX_DWORD src_size,
-                              CFX_BinaryBuf& dest_buf,
-                              FX_BOOL bEncrypt);
-  virtual FX_BOOL CryptFinish(void* context,
-                              CFX_BinaryBuf& dest_buf,
-                              FX_BOOL bEncrypt);
-
-  uint8_t m_EncryptKey[32];
-  int m_KeyLen;
-  int m_Cipher;
-  uint8_t* m_pAESContext;
-};
 
 CFX_ByteString PDF_NameDecode(const CFX_ByteStringC& orig);
 CFX_ByteString PDF_NameDecode(const CFX_ByteString& orig);
 CFX_ByteString PDF_NameEncode(const CFX_ByteString& orig);
 CFX_ByteString PDF_EncodeString(const CFX_ByteString& src,
                                 FX_BOOL bHex = FALSE);
 CFX_WideString PDF_DecodeText(const uint8_t* pData, FX_DWORD size);
 CFX_WideString PDF_DecodeText(const CFX_ByteString& bstr);
 CFX_ByteString PDF_EncodeText(const FX_WCHAR* pString, int len = -1);
 CFX_ByteString PDF_EncodeText(const CFX_WideString& str);
@@ skipping 168 matching lines @@
                        FX_DWORD src_size,
                        const CPDF_Dictionary* pDict,
                        uint8_t*& dest_buf,
                        FX_DWORD& dest_size,
                        CFX_ByteString& ImageEncoding,
                        CPDF_Dictionary*& pImageParms,
                        FX_DWORD estimated_size,
                        FX_BOOL bImageAcc);
 
 #endif  // CORE_INCLUDE_FPDFAPI_FPDF_PARSER_H_