| // 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 "../../../include/fpdfapi/fpdf_serial.h" |
| #include "editint.h" |
| #define PDF_OBJECTSTREAM_MAXLENGTH (256 * 1024) |
| #define PDF_XREFSTREAM_MAXSIZE 10000 |
| extern void FlateEncode(const FX_BYTE* src_buf, FX_DWORD src_data, FX_LPBYTE& dest_buf, FX_DWORD& dest_size); |
| extern void FlateEncode(FX_LPCBYTE src_buf, FX_DWORD src_size, int predictor, int Colors, int BitsPerComponent, int Columns, |
| FX_LPBYTE& dest_buf, FX_DWORD& dest_size); |
| extern FX_BOOL IsSignatureDict(const CPDF_Dictionary* pDict); |
| FX_INT32 PDF_CreatorAppendObject(const CPDF_Object* pObj, CFX_FileBufferArchive *pFile, FX_FILESIZE& offset) |
| { |
| FX_INT32 len = 0; |
| if (pObj == NULL) { |
| if (pFile->AppendString(FX_BSTRC(" null")) < 0) { |
| return -1; |
| } |
| offset += 5; |
| return 1; |
| } |
| switch (pObj->GetType()) { |
| case PDFOBJ_NULL: |
| if (pFile->AppendString(FX_BSTRC(" null")) < 0) { |
| return -1; |
| } |
| offset += 5; |
| break; |
| case PDFOBJ_BOOLEAN: |
| case PDFOBJ_NUMBER: |
| if (pFile->AppendString(FX_BSTRC(" ")) < 0) { |
| return -1; |
| } |
| if ((len = pFile->AppendString(pObj->GetString())) < 0) { |
| return -1; |
| } |
| offset += len + 1; |
| break; |
| case PDFOBJ_STRING: { |
| CFX_ByteString str = pObj->GetString(); |
| FX_BOOL bHex = ((CPDF_String*)pObj)->IsHex(); |
| if ((len = pFile->AppendString(PDF_EncodeString(str, bHex))) < 0) { |
| return -1; |
| } |
| offset += len; |
| break; |
| } |
| case PDFOBJ_NAME: { |
| if (pFile->AppendString(FX_BSTRC("/")) < 0) { |
| return -1; |
| } |
| CFX_ByteString str = pObj->GetString(); |
| if ((len = pFile->AppendString(PDF_NameEncode(str))) < 0) { |
| return -1; |
| } |
| offset += len + 1; |
| break; |
| } |
| case PDFOBJ_REFERENCE: { |
| if (pFile->AppendString(FX_BSTRC(" ")) < 0) { |
| return -1; |
| } |
| CPDF_Reference* p = (CPDF_Reference*)pObj; |
| if ((len = pFile->AppendDWord(p->GetRefObjNum())) < 0) { |
| return -1; |
| } |
| if (pFile->AppendString(FX_BSTRC(" 0 R ")) < 0) { |
| return -1; |
| } |
| offset += len + 6; |
| break; |
| } |
| case PDFOBJ_ARRAY: { |
| if (pFile->AppendString(FX_BSTRC("[")) < 0) { |
| return -1; |
| } |
| offset += 1; |
| CPDF_Array* p = (CPDF_Array*)pObj; |
| for (FX_DWORD i = 0; i < p->GetCount(); i ++) { |
| CPDF_Object* pElement = p->GetElement(i); |
| if (pElement->GetObjNum()) { |
| if (pFile->AppendString(FX_BSTRC(" ")) < 0) { |
| return -1; |
| } |
| if ((len = pFile->AppendDWord(pElement->GetObjNum())) < 0) { |
| return -1; |
| } |
| if (pFile->AppendString(FX_BSTRC(" 0 R")) < 0) { |
| return -1; |
| } |
| offset += len + 5; |
| } else { |
| if (PDF_CreatorAppendObject(pElement, pFile, offset) < 0) { |
| return -1; |
| } |
| } |
| } |
| if (pFile->AppendString(FX_BSTRC("]")) < 0) { |
| return -1; |
| } |
| offset += 1; |
| break; |
| } |
| case PDFOBJ_DICTIONARY: { |
| if (pFile->AppendString(FX_BSTRC("<<")) < 0) { |
| return -1; |
| } |
| offset += 2; |
| CPDF_Dictionary* p = (CPDF_Dictionary*)pObj; |
| FX_POSITION pos = p->GetStartPos(); |
| while (pos) { |
| CFX_ByteString key; |
| CPDF_Object* pValue = p->GetNextElement(pos, key); |
| if (pFile->AppendString(FX_BSTRC("/")) < 0) { |
| return -1; |
| } |
| if ((len = pFile->AppendString(PDF_NameEncode(key))) < 0) { |
| return -1; |
| } |
| offset += len + 1; |
| if (pValue->GetObjNum()) { |
| if (pFile->AppendString(FX_BSTRC(" ")) < 0) { |
| return -1; |
| } |
| if ((len = pFile->AppendDWord(pValue->GetObjNum())) < 0) { |
| return -1; |
| } |
| if (pFile->AppendString(FX_BSTRC(" 0 R")) < 0) { |
| return -1; |
| } |
| offset += len + 5; |
| } else { |
| if (PDF_CreatorAppendObject(pValue, pFile, offset) < 0) { |
| return -1; |
| } |
| } |
| } |
| if (pFile->AppendString(FX_BSTRC(">>")) < 0) { |
| return -1; |
| } |
| offset += 2; |
| break; |
| } |
| case PDFOBJ_STREAM: { |
| CPDF_Stream* p = (CPDF_Stream*)pObj; |
| if (PDF_CreatorAppendObject(p->GetDict(), pFile, offset) < 0) { |
| return -1; |
| } |
| if (pFile->AppendString(FX_BSTRC("stream\r\n")) < 0) { |
| return -1; |
| } |
| offset += 8; |
| CPDF_StreamAcc acc; |
| acc.LoadAllData(p, TRUE); |
| if (pFile->AppendBlock(acc.GetData(), acc.GetSize()) < 0) { |
| return -1; |
| } |
| offset += acc.GetSize(); |
| if ((len = pFile->AppendString(FX_BSTRC("\r\nendstream"))) < 0) { |
| return -1; |
| } |
| offset += len; |
| break; |
| } |
| default: |
| ASSERT(FALSE); |
| break; |
| } |
| return 1; |
| } |
| FX_INT32 PDF_CreatorWriteTrailer(CPDF_Document* pDocument, CFX_FileBufferArchive* pFile, CPDF_Array* pIDArray, FX_BOOL bCompress) |
| { |
| FX_FILESIZE offset = 0; |
| FX_INT32 len = 0; |
| FXSYS_assert(pDocument && pFile); |
| CPDF_Parser *pParser = (CPDF_Parser*)pDocument->GetParser(); |
| if (pParser) { |
| CPDF_Dictionary* p = pParser->GetTrailer(); |
| FX_POSITION pos = p->GetStartPos(); |
| while (pos) { |
| CFX_ByteString key; |
| CPDF_Object* pValue = p->GetNextElement(pos, key); |
| if (key == FX_BSTRC("Encrypt") || key == FX_BSTRC("Size") || key == FX_BSTRC("Filter") || |
| key == FX_BSTRC("Index") || key == FX_BSTRC("Length") || key == FX_BSTRC("Prev") || |
| key == FX_BSTRC("W") || key == FX_BSTRC("XRefStm") || key == FX_BSTRC("Type") || key == FX_BSTRC("ID")) { |
| continue; |
| } |
| if (bCompress && key == FX_BSTRC("DecodeParms")) { |
| continue; |
| } |
| if (pFile->AppendString((FX_BSTRC("/"))) < 0) { |
| return -1; |
| } |
| if ((len = pFile->AppendString(PDF_NameEncode(key))) < 0) { |
| return -1; |
| } |
| offset += len + 1; |
| if (pValue->GetObjNum()) { |
| if (pFile->AppendString(FX_BSTRC(" ")) < 0) { |
| return -1; |
| } |
| if ((len = pFile->AppendDWord(pValue->GetObjNum())) < 0) { |
| return -1; |
| } |
| if (pFile->AppendString(FX_BSTRC(" 0 R ")) < 0) { |
| return -1; |
| } |
| offset += len + 6; |
| } else { |
| if (PDF_CreatorAppendObject(pValue, pFile, offset) < 0) { |
| return -1; |
| } |
| } |
| } |
| if (pIDArray) { |
| if (pFile->AppendString((FX_BSTRC("/ID"))) < 0) { |
| return -1; |
| } |
| offset += 3; |
| if (PDF_CreatorAppendObject(pIDArray, pFile, offset) < 0) { |
| return -1; |
| } |
| } |
| return offset; |
| } |
| if (pFile->AppendString(FX_BSTRC("\r\n/Root ")) < 0) { |
| return -1; |
| } |
| if ((len = pFile->AppendDWord(pDocument->GetRoot()->GetObjNum())) < 0) { |
| return -1; |
| } |
| if (pFile->AppendString(FX_BSTRC(" 0 R\r\n")) < 0) { |
| return -1; |
| } |
| offset += len + 14; |
| if (pDocument->GetInfo()) { |
| if (pFile->AppendString(FX_BSTRC("/Info ")) < 0) { |
| return -1; |
| } |
| if ((len = pFile->AppendDWord(pDocument->GetInfo()->GetObjNum())) < 0) { |
| return -1; |
| } |
| if (pFile->AppendString(FX_BSTRC(" 0 R\r\n")) < 0) { |
| return -1; |
| } |
| offset += len + 12; |
| } |
| if (pIDArray) { |
| if (pFile->AppendString((FX_BSTRC("/ID"))) < 0) { |
| return -1; |
| } |
| offset += 3; |
| if (PDF_CreatorAppendObject(pIDArray, pFile, offset) < 0) { |
| return -1; |
| } |
| } |
| return offset; |
| } |
| FX_INT32 PDF_CreatorWriteEncrypt(const CPDF_Dictionary* pEncryptDict, FX_DWORD dwObjNum, CFX_FileBufferArchive *pFile) |
| { |
| if (!pEncryptDict) { |
| return 0; |
| } |
| FXSYS_assert(pFile); |
| FX_FILESIZE offset = 0; |
| FX_INT32 len = 0; |
| if (pFile->AppendString(FX_BSTRC("/Encrypt")) < 0) { |
| return -1; |
| } |
| offset += 8; |
| if (pFile->AppendString(FX_BSTRC(" ")) < 0) { |
| return -1; |
| } |
| if ((len = pFile->AppendDWord(dwObjNum)) < 0) { |
| return -1; |
| } |
| if (pFile->AppendString(FX_BSTRC(" 0 R ")) < 0) { |
| return -1; |
| } |
| offset += len + 6; |
| return offset; |
| } |
| FX_BOOL PDF_GenerateFileID(FX_DWORD dwSeed1, FX_DWORD dwSeed2, FX_LPDWORD pBuffer) |
| { |
| if (!pBuffer) { |
| return FALSE; |
| } |
| FX_LPVOID pContext = FX_Random_MT_Start(dwSeed1); |
| FX_INT32 i = 0; |
| for (i = 0; i < 2; i++) { |
| *pBuffer++ = FX_Random_MT_Generate(pContext); |
| } |
| FX_Random_MT_Close(pContext); |
| pContext = FX_Random_MT_Start(dwSeed2); |
| for (i = 0; i < 2; i++) { |
| *pBuffer++ = FX_Random_MT_Generate(pContext); |
| } |
| FX_Random_MT_Close(pContext); |
| return TRUE; |
| } |
| class CPDF_FlateEncoder |
| { |
| public: |
| CPDF_FlateEncoder(); |
| ~CPDF_FlateEncoder(); |
| FX_BOOL Initialize(CPDF_Stream* pStream, FX_BOOL bFlateEncode); |
| FX_BOOL Initialize(FX_LPCBYTE pBuffer, FX_DWORD size, FX_BOOL bFlateEncode, FX_BOOL bXRefStream = FALSE); |
| void CloneDict(); |
| FX_LPBYTE m_pData; |
| FX_DWORD m_dwSize; |
| CPDF_Dictionary* m_pDict; |
| FX_BOOL m_bCloned; |
| FX_BOOL m_bNewData; |
| CPDF_StreamAcc m_Acc; |
| }; |
| CPDF_FlateEncoder::CPDF_FlateEncoder() |
| { |
| m_pData = NULL; |
| m_dwSize = 0; |
| m_pDict = NULL; |
| m_bCloned = FALSE; |
| m_bNewData = FALSE; |
| } |
| void CPDF_FlateEncoder::CloneDict() |
| { |
| if (!m_bCloned) { |
| m_pDict = (CPDF_Dictionary*)m_pDict->Clone(); |
| m_bCloned = TRUE; |
| } |
| } |
| FX_BOOL CPDF_FlateEncoder::Initialize(CPDF_Stream* pStream, FX_BOOL bFlateEncode) |
| { |
| m_Acc.LoadAllData(pStream, TRUE); |
| if ((pStream && pStream->GetDict() && pStream->GetDict()->KeyExist("Filter")) || !bFlateEncode) { |
| if (pStream->GetDict()->KeyExist("Filter") && !bFlateEncode) { |
| CPDF_StreamAcc destAcc; |
| destAcc.LoadAllData(pStream); |
| m_dwSize = destAcc.GetSize(); |
| m_pData = (FX_LPBYTE)destAcc.DetachData(); |
| m_pDict = (CPDF_Dictionary*)pStream->GetDict()->Clone(); |
| m_pDict->RemoveAt(FX_BSTRC("Filter")); |
| m_bNewData = TRUE; |
| m_bCloned = TRUE; |
| } else { |
| m_pData = (FX_LPBYTE)m_Acc.GetData(); |
| m_dwSize = m_Acc.GetSize(); |
| m_pDict = pStream->GetDict(); |
| } |
| return TRUE; |
| } |
| m_pData = NULL; |
| m_dwSize = 0; |
| m_bNewData = TRUE; |
| m_bCloned = TRUE; |
| ::FlateEncode(m_Acc.GetData(), m_Acc.GetSize(), m_pData, m_dwSize); |
| m_pDict = (CPDF_Dictionary*)pStream->GetDict()->Clone(); |
| m_pDict->SetAtInteger("Length", m_dwSize); |
| m_pDict->SetAtName("Filter", "FlateDecode"); |
| m_pDict->RemoveAt("DecodeParms"); |
| return TRUE; |
| } |
| FX_BOOL CPDF_FlateEncoder::Initialize(FX_LPCBYTE pBuffer, FX_DWORD size, FX_BOOL bFlateEncode, FX_BOOL bXRefStream) |
| { |
| if (!bFlateEncode) { |
| m_pData = (FX_LPBYTE)pBuffer; |
| m_dwSize = size; |
| return TRUE; |
| } |
| m_bNewData = TRUE; |
| if (bXRefStream) { |
| ::FlateEncode(pBuffer, size, 12, 1, 8, 7, m_pData, m_dwSize); |
| } else { |
| ::FlateEncode(pBuffer, size, m_pData, m_dwSize); |
| } |
| return TRUE; |
| } |
| CPDF_FlateEncoder::~CPDF_FlateEncoder() |
| { |
| if (m_bCloned && m_pDict) { |
| m_pDict->Release(); |
| } |
| if (m_bNewData && m_pData) { |
| FX_Free(m_pData); |
| } |
| } |
| class CPDF_Encryptor |
| { |
| public: |
| CPDF_Encryptor(); |
| ~CPDF_Encryptor(); |
| FX_BOOL Initialize(CPDF_CryptoHandler* pHandler, int objnum, FX_LPBYTE src_data, FX_DWORD src_size); |
| FX_LPBYTE m_pData; |
| FX_DWORD m_dwSize; |
| FX_BOOL m_bNewBuf; |
| }; |
| CPDF_Encryptor::CPDF_Encryptor() |
| { |
| m_pData = NULL; |
| m_dwSize = 0; |
| m_bNewBuf = FALSE; |
| } |
| FX_BOOL CPDF_Encryptor::Initialize(CPDF_CryptoHandler* pHandler, int objnum, FX_LPBYTE src_data, FX_DWORD src_size) |
| { |
| if (src_size == 0) { |
| return TRUE; |
| } |
| if (pHandler == NULL) { |
| m_pData = (FX_LPBYTE)src_data; |
| m_dwSize = src_size; |
| m_bNewBuf = FALSE; |
| return TRUE; |
| } |
| m_dwSize = pHandler->EncryptGetSize(objnum, 0, src_data, src_size); |
| m_pData = FX_Alloc(FX_BYTE, m_dwSize); |
| pHandler->EncryptContent(objnum, 0, src_data, src_size, m_pData, m_dwSize); |
| m_bNewBuf = TRUE; |
| return TRUE; |
| } |
| CPDF_Encryptor::~CPDF_Encryptor() |
| { |
| if (m_bNewBuf) { |
| FX_Free(m_pData); |
| } |
| } |
| CPDF_ObjectStream::CPDF_ObjectStream() |
| : m_dwObjNum(0) |
| , m_index(0) |
| { |
| } |
| FX_BOOL CPDF_ObjectStream::Start() |
| { |
| m_ObjNumArray.RemoveAll(); |
| m_OffsetArray.RemoveAll(); |
| m_Buffer.Clear(); |
| m_dwObjNum = 0; |
| m_index = 0; |
| return TRUE; |
| } |
| FX_INT32 CPDF_ObjectStream::CompressIndirectObject(FX_DWORD dwObjNum, const CPDF_Object *pObj) |
| { |
| m_ObjNumArray.Add(dwObjNum); |
| m_OffsetArray.Add(m_Buffer.GetLength()); |
| m_Buffer << pObj; |
| return 1; |
| } |
| FX_INT32 CPDF_ObjectStream::CompressIndirectObject(FX_DWORD dwObjNum, FX_LPCBYTE pBuffer, FX_DWORD dwSize) |
| { |
| m_ObjNumArray.Add(dwObjNum); |
| m_OffsetArray.Add(m_Buffer.GetLength()); |
| m_Buffer.AppendBlock(pBuffer, dwSize); |
| return 1; |
| } |
| FX_FILESIZE CPDF_ObjectStream::End(CPDF_Creator* pCreator) |
| { |
| FXSYS_assert(pCreator); |
| if (m_ObjNumArray.GetSize() == 0) { |
| return 0; |
| } |
| CFX_FileBufferArchive *pFile = &pCreator->m_File; |
| CPDF_CryptoHandler *pHandler = pCreator->m_pCryptoHandler; |
| FX_FILESIZE ObjOffset = pCreator->m_Offset; |
| if (!m_dwObjNum) { |
| m_dwObjNum = ++pCreator->m_dwLastObjNum; |
| } |
| CFX_ByteTextBuf tempBuffer; |
| FX_INT32 iCount = m_ObjNumArray.GetSize(); |
| for (FX_INT32 i = 0; i < iCount; i++) { |
| tempBuffer << m_ObjNumArray.ElementAt(i) << FX_BSTRC(" ") << m_OffsetArray.ElementAt(i) << FX_BSTRC(" "); |
| } |
| FX_FILESIZE &offset = pCreator->m_Offset; |
| FX_INT32 len = pFile->AppendDWord(m_dwObjNum); |
| if (len < 0) { |
| return -1; |
| } |
| offset += len; |
| if ((len = pFile->AppendString(FX_BSTRC(" 0 obj\r\n<</Type /ObjStm /N "))) < 0) { |
| return -1; |
| } |
| offset += len; |
| if ((len = pFile->AppendDWord((FX_DWORD)iCount)) < 0) { |
| return -1; |
| } |
| offset += len; |
| if (pFile->AppendString(FX_BSTRC("/First ")) < 0) { |
| return -1; |
| } |
| if ((len = pFile->AppendDWord((FX_DWORD)tempBuffer.GetLength())) < 0) { |
| return -1; |
| } |
| if (pFile->AppendString(FX_BSTRC("/Length ")) < 0) { |
| return -1; |
| } |
| offset += len + 15; |
| if (!pCreator->m_bCompress && !pHandler) { |
| if ((len = pFile->AppendDWord((FX_DWORD)(tempBuffer.GetLength() + m_Buffer.GetLength()))) < 0) { |
| return -1; |
| } |
| offset += len; |
| if ((len = pFile->AppendString(FX_BSTRC(">>stream\r\n"))) < 0) { |
| return -1; |
| } |
| if (pFile->AppendBlock(tempBuffer.GetBuffer(), tempBuffer.GetLength()) < 0) { |
| return -1; |
| } |
| if (pFile->AppendBlock(m_Buffer.GetBuffer(), m_Buffer.GetLength()) < 0) { |
| return -1; |
| } |
| offset += len + tempBuffer.GetLength() + m_Buffer.GetLength(); |
| } else { |
| tempBuffer << m_Buffer; |
| CPDF_FlateEncoder encoder; |
| encoder.Initialize(tempBuffer.GetBuffer(), tempBuffer.GetLength(), pCreator->m_bCompress); |
| CPDF_Encryptor encryptor; |
| encryptor.Initialize(pHandler, m_dwObjNum, encoder.m_pData, encoder.m_dwSize); |
| if ((len = pFile->AppendDWord(encryptor.m_dwSize)) < 0) { |
| return -1; |
| } |
| offset += len; |
| if (pCreator->m_bCompress) { |
| if (pFile->AppendString(FX_BSTRC("/Filter /FlateDecode")) < 0) { |
| return -1; |
| } |
| offset += 20; |
| } |
| if ((len = pFile->AppendString(FX_BSTRC(">>stream\r\n"))) < 0) { |
| return -1; |
| } |
| if (pFile->AppendBlock(encryptor.m_pData, encryptor.m_dwSize) < 0) { |
| return -1; |
| } |
| offset += len + encryptor.m_dwSize; |
| } |
| if ((len = pFile->AppendString(FX_BSTRC("\r\nendstream\r\nendobj\r\n"))) < 0) { |
| return -1; |
| } |
| offset += len; |
| return ObjOffset; |
| } |
| CPDF_XRefStream::CPDF_XRefStream() |
| : m_PrevOffset(0) |
| , m_dwTempObjNum(0) |
| , m_iSeg(0) |
| { |
| } |
| FX_BOOL CPDF_XRefStream::Start() |
| { |
| m_IndexArray.RemoveAll(); |
| m_Buffer.Clear(); |
| m_iSeg = 0; |
| return TRUE; |
| } |
| FX_INT32 CPDF_XRefStream::CompressIndirectObject(FX_DWORD dwObjNum, const CPDF_Object *pObj, CPDF_Creator *pCreator) |
| { |
| if (!pCreator) { |
| return 0; |
| } |
| m_ObjStream.CompressIndirectObject(dwObjNum, pObj); |
| if (m_ObjStream.m_ObjNumArray.GetSize() < pCreator->m_ObjectStreamSize && |
| m_ObjStream.m_Buffer.GetLength() < PDF_OBJECTSTREAM_MAXLENGTH) { |
| return 1; |
| } |
| return EndObjectStream(pCreator); |
| } |
| FX_INT32 CPDF_XRefStream::CompressIndirectObject(FX_DWORD dwObjNum, FX_LPCBYTE pBuffer, FX_DWORD dwSize, CPDF_Creator *pCreator) |
| { |
| if (!pCreator) { |
| return 0; |
| } |
| m_ObjStream.CompressIndirectObject(dwObjNum, pBuffer, dwSize); |
| if (m_ObjStream.m_ObjNumArray.GetSize() < pCreator->m_ObjectStreamSize && |
| m_ObjStream.m_Buffer.GetLength() < PDF_OBJECTSTREAM_MAXLENGTH) { |
| return 1; |
| } |
| return EndObjectStream(pCreator); |
| } |
| static void _AppendIndex0(CFX_ByteTextBuf& buffer, FX_BOOL bFirstObject = TRUE) |
| { |
| buffer.AppendByte(0); |
| buffer.AppendByte(0); |
| buffer.AppendByte(0); |
| buffer.AppendByte(0); |
| buffer.AppendByte(0); |
| if (bFirstObject) { |
| buffer.AppendByte(0xFF); |
| buffer.AppendByte(0xFF); |
| } else { |
| buffer.AppendByte(0); |
| buffer.AppendByte(0); |
| } |
| } |
| static void _AppendIndex1(CFX_ByteTextBuf& buffer, FX_FILESIZE offset) |
| { |
| buffer.AppendByte(1); |
| buffer.AppendByte(FX_GETBYTEOFFSET24(offset)); |
| buffer.AppendByte(FX_GETBYTEOFFSET16(offset)); |
| buffer.AppendByte(FX_GETBYTEOFFSET8(offset)); |
| buffer.AppendByte(FX_GETBYTEOFFSET0(offset)); |
| buffer.AppendByte(0); |
| buffer.AppendByte(0); |
| } |
| static void _AppendIndex2(CFX_ByteTextBuf& buffer, FX_DWORD objnum, FX_INT32 index) |
| { |
| buffer.AppendByte(2); |
| buffer.AppendByte(FX_GETBYTEOFFSET24(objnum)); |
| buffer.AppendByte(FX_GETBYTEOFFSET16(objnum)); |
| buffer.AppendByte(FX_GETBYTEOFFSET8(objnum)); |
| buffer.AppendByte(FX_GETBYTEOFFSET0(objnum)); |
| buffer.AppendByte(FX_GETBYTEOFFSET8(index)); |
| buffer.AppendByte(FX_GETBYTEOFFSET0(index)); |
| } |
| FX_INT32 CPDF_XRefStream::EndObjectStream(CPDF_Creator *pCreator, FX_BOOL bEOF) |
| { |
| FX_FILESIZE objOffset = 0; |
| if (bEOF) { |
| objOffset = m_ObjStream.End(pCreator); |
| if (objOffset < 0) { |
| return -1; |
| } |
| } |
| FX_DWORD &dwObjStmNum = m_ObjStream.m_dwObjNum; |
| if (!dwObjStmNum) { |
| dwObjStmNum = ++pCreator->m_dwLastObjNum; |
| } |
| FX_INT32 iSize = m_ObjStream.m_ObjNumArray.GetSize(); |
| FX_INT32 iSeg = m_IndexArray.GetSize() / 2; |
| if (!(pCreator->m_dwFlags & FPDFCREATE_INCREMENTAL)) { |
| if (m_dwTempObjNum == 0) { |
| _AppendIndex0(m_Buffer); |
| m_dwTempObjNum++; |
| } |
| FX_DWORD end_num = m_IndexArray.GetAt((iSeg - 1) * 2) + m_IndexArray.GetAt((iSeg - 1) * 2 + 1); |
| int index = 0; |
| for (; m_dwTempObjNum < end_num; m_dwTempObjNum++) { |
| FX_FILESIZE* offset = pCreator->m_ObjectOffset.GetPtrAt(m_dwTempObjNum); |
| if (offset) { |
| if (index >= iSize || m_dwTempObjNum != m_ObjStream.m_ObjNumArray[index]) { |
| _AppendIndex1(m_Buffer, *offset); |
| } else { |
| _AppendIndex2(m_Buffer, dwObjStmNum, index++); |
| } |
| } else { |
| _AppendIndex0(m_Buffer, FALSE); |
| } |
| } |
| if (iSize > 0 && bEOF) { |
| pCreator->m_ObjectOffset.Add(dwObjStmNum, 1); |
| pCreator->m_ObjectSize.Add(dwObjStmNum, 1); |
| pCreator->m_ObjectOffset[dwObjStmNum] = objOffset; |
| } |
| m_iSeg = iSeg; |
| if (bEOF) { |
| m_ObjStream.Start(); |
| } |
| return 1; |
| } |
| FX_INT32 &j = m_ObjStream.m_index; |
| for (int i = m_iSeg; i < iSeg; i++) { |
| FX_DWORD start = m_IndexArray.ElementAt(i * 2); |
| FX_DWORD end = m_IndexArray.ElementAt(i * 2 + 1) + start; |
| for (FX_DWORD m = start; m < end; m++) { |
| if (j >= iSize || m != m_ObjStream.m_ObjNumArray.ElementAt(j)) { |
| _AppendIndex1(m_Buffer, pCreator->m_ObjectOffset[m]); |
| } else { |
| _AppendIndex2(m_Buffer, dwObjStmNum, j++); |
| } |
| } |
| } |
| if (iSize > 0 && bEOF) { |
| _AppendIndex1(m_Buffer, objOffset); |
| m_IndexArray.Add(dwObjStmNum); |
| m_IndexArray.Add(1); |
| iSeg += 1; |
| } |
| m_iSeg = iSeg; |
| if (bEOF) { |
| m_ObjStream.Start(); |
| } |
| return 1; |
| } |
| FX_BOOL CPDF_XRefStream::GenerateXRefStream(CPDF_Creator* pCreator, FX_BOOL bEOF) |
| { |
| FX_FILESIZE offset_tmp = pCreator->m_Offset; |
| FX_DWORD objnum = ++pCreator->m_dwLastObjNum; |
| CFX_FileBufferArchive *pFile = &pCreator->m_File; |
| FX_BOOL bIncremental = (pCreator->m_dwFlags & FPDFCREATE_INCREMENTAL) != 0; |
| if (bIncremental) { |
| AddObjectNumberToIndexArray(objnum); |
| } else { |
| for (; m_dwTempObjNum < pCreator->m_dwLastObjNum; m_dwTempObjNum++) { |
| FX_FILESIZE* offset = pCreator->m_ObjectOffset.GetPtrAt(m_dwTempObjNum); |
| if (offset) { |
| _AppendIndex1(m_Buffer, *offset); |
| } else { |
| _AppendIndex0(m_Buffer, FALSE); |
| } |
| } |
| } |
| _AppendIndex1(m_Buffer, offset_tmp); |
| FX_FILESIZE &offset = pCreator->m_Offset; |
| FX_INT32 len = pFile->AppendDWord(objnum); |
| if (len < 0) { |
| return FALSE; |
| } |
| offset += len; |
| if ((len = pFile->AppendString(FX_BSTRC(" 0 obj\r\n<</Type /XRef/W[1 4 2]/Index["))) < 0) { |
| return FALSE; |
| } |
| offset += len; |
| if (!bIncremental) { |
| if ((len = pFile->AppendDWord(0)) < 0) { |
| return FALSE; |
| } |
| if ((len = pFile->AppendString(FX_BSTRC(" "))) < 0) { |
| return FALSE; |
| } |
| offset += len + 1; |
| if ((len = pFile->AppendDWord(objnum + 1)) < 0) { |
| return FALSE; |
| } |
| offset += len; |
| } else { |
| FX_INT32 iSeg = m_IndexArray.GetSize() / 2; |
| for (FX_INT32 i = 0; i < iSeg; i++) { |
| if ((len = pFile->AppendDWord(m_IndexArray.ElementAt(i * 2))) < 0) { |
| return FALSE; |
| } |
| if (pFile->AppendString(FX_BSTRC(" ")) < 0) { |
| return FALSE; |
| } |
| offset += len + 1; |
| if ((len = pFile->AppendDWord(m_IndexArray.ElementAt(i * 2 + 1))) < 0) { |
| return FALSE; |
| } |
| if (pFile->AppendString(FX_BSTRC(" ")) < 0) { |
| return FALSE; |
| } |
| offset += len + 1; |
| } |
| } |
| if (pFile->AppendString(FX_BSTRC("]/Size ")) < 0) { |
| return FALSE; |
| } |
| if ((len = pFile->AppendDWord(objnum + 1)) < 0) { |
| return FALSE; |
| } |
| offset += len + 7; |
| if (m_PrevOffset > 0) { |
| if (pFile->AppendString(FX_BSTRC("/Prev ")) < 0) { |
| return -1; |
| } |
| FX_CHAR offset_buf[20]; |
| FXSYS_memset32(offset_buf, 0, sizeof(offset_buf)); |
| FXSYS_i64toa(m_PrevOffset, offset_buf, 10); |
| FX_INT32 len = (FX_INT32)FXSYS_strlen(offset_buf); |
| if (pFile->AppendBlock(offset_buf, len) < 0) { |
| return -1; |
| } |
| offset += len + 6; |
| } |
| FX_BOOL bPredictor = TRUE; |
| CPDF_FlateEncoder encoder; |
| encoder.Initialize(m_Buffer.GetBuffer(), m_Buffer.GetLength(), pCreator->m_bCompress, bPredictor); |
| if (pCreator->m_bCompress) { |
| if (pFile->AppendString(FX_BSTRC("/Filter /FlateDecode")) < 0) { |
| return FALSE; |
| } |
| offset += 20; |
| if (bPredictor) { |
| if ((len = pFile->AppendString(FX_BSTRC("/DecodeParms<</Columns 7/Predictor 12>>"))) < 0) { |
| return FALSE; |
| } |
| offset += len; |
| } |
| } |
| if (pFile->AppendString(FX_BSTRC("/Length ")) < 0) { |
| return FALSE; |
| } |
| if ((len = pFile->AppendDWord(encoder.m_dwSize)) < 0) { |
| return FALSE; |
| } |
| offset += len + 8; |
| if (bEOF) { |
| if ((len = PDF_CreatorWriteTrailer(pCreator->m_pDocument, pFile, pCreator->m_pIDArray, pCreator->m_bCompress)) < 0) { |
| return -1; |
| } |
| offset += len; |
| if (pCreator->m_pEncryptDict) { |
| FX_DWORD dwEncryptObjNum = pCreator->m_pEncryptDict->GetObjNum(); |
| if (dwEncryptObjNum == 0) { |
| dwEncryptObjNum = pCreator->m_dwEnryptObjNum; |
| } |
| if ((len = PDF_CreatorWriteEncrypt(pCreator->m_pEncryptDict, dwEncryptObjNum, pFile)) < 0) { |
| return -1; |
| } |
| offset += len; |
| } |
| } |
| if ((len = pFile->AppendString(FX_BSTRC(">>stream\r\n"))) < 0) { |
| return FALSE; |
| } |
| offset += len; |
| if (pFile->AppendBlock(encoder.m_pData, encoder.m_dwSize) < 0) { |
| return FALSE; |
| } |
| if ((len = pFile->AppendString(FX_BSTRC("\r\nendstream\r\nendobj\r\n"))) < 0) { |
| return FALSE; |
| } |
| offset += encoder.m_dwSize + len; |
| m_PrevOffset = offset_tmp; |
| return TRUE; |
| } |
| FX_BOOL CPDF_XRefStream::End(CPDF_Creator *pCreator, FX_BOOL bEOF ) |
| { |
| if (EndObjectStream(pCreator, bEOF) < 0) { |
| return FALSE; |
| } |
| return GenerateXRefStream(pCreator, bEOF); |
| } |
| FX_BOOL CPDF_XRefStream::EndXRefStream(CPDF_Creator* pCreator) |
| { |
| if (!(pCreator->m_dwFlags & FPDFCREATE_INCREMENTAL)) { |
| _AppendIndex0(m_Buffer); |
| for (FX_DWORD i = 1; i < pCreator->m_dwLastObjNum + 1; i++) { |
| FX_FILESIZE* offset = pCreator->m_ObjectOffset.GetPtrAt(i); |
| if (offset) { |
| _AppendIndex1(m_Buffer, *offset); |
| } else { |
| _AppendIndex0(m_Buffer, FALSE); |
| } |
| } |
| } else { |
| FX_INT32 iSeg = m_IndexArray.GetSize() / 2; |
| for (int i = 0; i < iSeg; i++) { |
| FX_DWORD start = m_IndexArray.ElementAt(i * 2); |
| FX_DWORD end = m_IndexArray.ElementAt(i * 2 + 1) + start; |
| for (FX_DWORD j = start; j < end; j++) { |
| _AppendIndex1(m_Buffer, pCreator->m_ObjectOffset[j]); |
| } |
| } |
| } |
| return GenerateXRefStream(pCreator, FALSE); |
| } |
| FX_BOOL CPDF_XRefStream::AddObjectNumberToIndexArray(FX_DWORD objnum) |
| { |
| FX_INT32 iSize = m_IndexArray.GetSize(); |
| if (iSize == 0) { |
| m_IndexArray.Add(objnum); |
| m_IndexArray.Add(1); |
| } else { |
| FXSYS_assert(iSize > 1); |
| FX_DWORD startobjnum = m_IndexArray.ElementAt(iSize - 2); |
| FX_INT32 iCount = m_IndexArray.ElementAt(iSize - 1); |
| if (objnum == startobjnum + iCount) { |
| m_IndexArray[iSize - 1] = iCount + 1; |
| } else { |
| m_IndexArray.Add(objnum); |
| m_IndexArray.Add(1); |
| } |
| } |
| return TRUE; |
| } |
| CPDF_Creator::CPDF_Creator(CPDF_Document* pDoc) |
| { |
| m_pDocument = pDoc; |
| m_pParser = (CPDF_Parser*)pDoc->m_pParser; |
| m_bCompress = TRUE; |
| if (m_pParser) { |
| m_pEncryptDict = m_pParser->GetEncryptDict(); |
| m_pCryptoHandler = m_pParser->GetCryptoHandler(); |
| } else { |
| m_pEncryptDict = NULL; |
| m_pCryptoHandler = NULL; |
| } |
| m_bSecurityChanged = FALSE; |
| m_bStandardSecurity = FALSE; |
| m_pMetadata = NULL; |
| m_bEncryptCloned = FALSE; |
| m_bEncryptMetadata = FALSE; |
| m_Offset = 0; |
| m_iStage = -1; |
| m_dwFlags = 0; |
| m_Pos = NULL; |
| m_XrefStart = 0; |
| m_pXRefStream = NULL; |
| m_ObjectStreamSize = 200; |
| m_dwLastObjNum = m_pDocument->GetLastObjNum(); |
| m_pIDArray = NULL; |
| m_FileVersion = 0; |
| m_dwEnryptObjNum = 0; |
| m_bNewCrypto = FALSE; |
| } |
| CPDF_Creator::~CPDF_Creator() |
| { |
| ResetStandardSecurity(); |
| if (m_bEncryptCloned && m_pEncryptDict) { |
| m_pEncryptDict->Release(); |
| m_pEncryptDict = NULL; |
| } |
| Clear(); |
| } |
| static FX_BOOL _IsXRefNeedEnd(CPDF_XRefStream* pXRef, FX_DWORD flag) |
| { |
| if (!(flag & FPDFCREATE_INCREMENTAL)) { |
| return FALSE; |
| } |
| FX_INT32 iSize = pXRef->m_IndexArray.GetSize() / 2; |
| FX_INT32 iCount = 0; |
| for (FX_INT32 i = 0; i < iSize; i++) { |
| iCount += pXRef->m_IndexArray.ElementAt(i * 2 + 1); |
| } |
| return (iCount >= PDF_XREFSTREAM_MAXSIZE); |
| } |
| FX_INT32 CPDF_Creator::WriteIndirectObjectToStream(const CPDF_Object* pObj) |
| { |
| if (!m_pXRefStream) { |
| return 1; |
| } |
| FX_DWORD objnum = pObj->GetObjNum(); |
| if (m_pParser && m_pParser->m_ObjVersion.GetSize() > (FX_INT32)objnum && m_pParser->m_ObjVersion[objnum] > 0) { |
| return 1; |
| } |
| if (pObj->GetType() == PDFOBJ_NUMBER) { |
| return 1; |
| } |
| CPDF_Dictionary *pDict = pObj->GetDict(); |
| if (pObj->GetType() == PDFOBJ_STREAM) { |
| if (pDict && pDict->GetString(FX_BSTRC("Type")) == FX_BSTRC("XRef")) { |
| return 0; |
| } |
| return 1; |
| } |
| if (pDict) { |
| if (pDict == m_pDocument->m_pRootDict || pDict == m_pEncryptDict) { |
| return 1; |
| } |
| if (IsSignatureDict(pDict)) { |
| return 1; |
| } |
| if (pDict->GetString(FX_BSTRC("Type")) == FX_BSTRC("Page")) { |
| return 1; |
| } |
| } |
| m_pXRefStream->AddObjectNumberToIndexArray(objnum); |
| if (m_pXRefStream->CompressIndirectObject(objnum, pObj, this) < 0) { |
| return -1; |
| } |
| if (!_IsXRefNeedEnd(m_pXRefStream, m_dwFlags)) { |
| return 0; |
| } |
| if (!m_pXRefStream->End(this)) { |
| return -1; |
| } |
| if (!m_pXRefStream->Start()) { |
| return -1; |
| } |
| return 0; |
| } |
| FX_INT32 CPDF_Creator::WriteIndirectObjectToStream(FX_DWORD objnum, FX_LPCBYTE pBuffer, FX_DWORD dwSize) |
| { |
| if (!m_pXRefStream) { |
| return 1; |
| } |
| m_pXRefStream->AddObjectNumberToIndexArray(objnum); |
| FX_INT32 iRet = m_pXRefStream->CompressIndirectObject(objnum, pBuffer, dwSize, this); |
| if (iRet < 1) { |
| return iRet; |
| } |
| if (!_IsXRefNeedEnd(m_pXRefStream, m_dwFlags)) { |
| return 0; |
| } |
| if (!m_pXRefStream->End(this)) { |
| return -1; |
| } |
| if (!m_pXRefStream->Start()) { |
| return -1; |
| } |
| return 0; |
| } |
| FX_INT32 CPDF_Creator::AppendObjectNumberToXRef(FX_DWORD objnum) |
| { |
| if (!m_pXRefStream) { |
| return 1; |
| } |
| m_pXRefStream->AddObjectNumberToIndexArray(objnum); |
| if (!_IsXRefNeedEnd(m_pXRefStream, m_dwFlags)) { |
| return 0; |
| } |
| if (!m_pXRefStream->End(this)) { |
| return -1; |
| } |
| if (!m_pXRefStream->Start()) { |
| return -1; |
| } |
| return 0; |
| } |
| FX_INT32 CPDF_Creator::WriteStream(const CPDF_Object* pStream, FX_DWORD objnum, CPDF_CryptoHandler* pCrypto) |
| { |
| CPDF_FlateEncoder encoder; |
| encoder.Initialize((CPDF_Stream*)pStream, pStream == m_pMetadata ? FALSE : m_bCompress); |
| CPDF_Encryptor encryptor; |
| if(!encryptor.Initialize(pCrypto, objnum, encoder.m_pData, encoder.m_dwSize)) { |
| return -1; |
| } |
| if ((FX_DWORD)encoder.m_pDict->GetInteger(FX_BSTRC("Length")) != encryptor.m_dwSize) { |
| encoder.CloneDict(); |
| encoder.m_pDict->SetAtInteger(FX_BSTRC("Length"), encryptor.m_dwSize); |
| } |
| if (WriteDirectObj(objnum, encoder.m_pDict) < 0) { |
| return -1; |
| } |
| int len = m_File.AppendString(FX_BSTRC("stream\r\n")); |
| if (len < 0) { |
| return -1; |
| } |
| m_Offset += len; |
| if (m_File.AppendBlock(encryptor.m_pData, encryptor.m_dwSize) < 0) { |
| return -1; |
| } |
| m_Offset += encryptor.m_dwSize; |
| if ((len = m_File.AppendString(FX_BSTRC("\r\nendstream"))) < 0) { |
| return -1; |
| } |
| m_Offset += len; |
| return 1; |
| } |
| FX_INT32 CPDF_Creator::WriteIndirectObj(FX_DWORD objnum, const CPDF_Object* pObj) |
| { |
| FX_INT32 len = m_File.AppendDWord(objnum); |
| if (len < 0) { |
| return -1; |
| } |
| m_Offset += len; |
| if ((len = m_File.AppendString(FX_BSTRC(" 0 obj\r\n"))) < 0) { |
| return -1; |
| } |
| m_Offset += len; |
| if (pObj->GetType() == PDFOBJ_STREAM) { |
| CPDF_CryptoHandler *pHandler = NULL; |
| pHandler = (pObj == m_pMetadata && !m_bEncryptMetadata) ? NULL : m_pCryptoHandler; |
| if (WriteStream(pObj, objnum, pHandler) < 0) { |
| return -1; |
| } |
| } else { |
| if (WriteDirectObj(objnum, pObj) < 0) { |
| return -1; |
| } |
| } |
| if ((len = m_File.AppendString(FX_BSTRC("\r\nendobj\r\n"))) < 0) { |
| return -1; |
| } |
| m_Offset += len; |
| if (AppendObjectNumberToXRef(objnum) < 0) { |
| return -1; |
| } |
| return 0; |
| } |
| FX_INT32 CPDF_Creator::WriteIndirectObj(const CPDF_Object* pObj) |
| { |
| FX_INT32 iRet = WriteIndirectObjectToStream(pObj); |
| if (iRet < 1) { |
| return iRet; |
| } |
| return WriteIndirectObj(pObj->GetObjNum(), pObj); |
| } |
| FX_INT32 CPDF_Creator::WriteDirectObj(FX_DWORD objnum, const CPDF_Object* pObj, FX_BOOL bEncrypt) |
| { |
| FX_INT32 len = 0; |
| if (pObj == NULL) { |
| if (m_File.AppendString(FX_BSTRC(" null")) < 0) { |
| return -1; |
| } |
| m_Offset += 5; |
| return 1; |
| } |
| switch (pObj->GetType()) { |
| case PDFOBJ_NULL: |
| if (m_File.AppendString(FX_BSTRC(" null")) < 0) { |
| return -1; |
| } |
| m_Offset += 5; |
| break; |
| case PDFOBJ_BOOLEAN: |
| case PDFOBJ_NUMBER: |
| if (m_File.AppendString(FX_BSTRC(" ")) < 0) { |
| return -1; |
| } |
| if ((len = m_File.AppendString(pObj->GetString())) < 0) { |
| return -1; |
| } |
| m_Offset += len + 1; |
| break; |
| case PDFOBJ_STRING: { |
| CFX_ByteString str = pObj->GetString(); |
| FX_BOOL bHex = ((CPDF_String*)pObj)->IsHex(); |
| if (m_pCryptoHandler == NULL || !bEncrypt) { |
| CFX_ByteString content = PDF_EncodeString(str, bHex); |
| if ((len = m_File.AppendString(content)) < 0) { |
| return -1; |
| } |
| m_Offset += len; |
| break; |
| } |
| CPDF_Encryptor encryptor; |
| encryptor.Initialize(m_pCryptoHandler, objnum, (FX_LPBYTE)str.c_str(), str.GetLength()); |
| CFX_ByteString content = PDF_EncodeString(CFX_ByteString((FX_LPCSTR)encryptor.m_pData, encryptor.m_dwSize), bHex); |
| if ((len = m_File.AppendString(content)) < 0) { |
| return -1; |
| } |
| m_Offset += len; |
| break; |
| } |
| case PDFOBJ_STREAM: { |
| CPDF_FlateEncoder encoder; |
| encoder.Initialize((CPDF_Stream*)pObj, m_bCompress); |
| CPDF_Encryptor encryptor; |
| CPDF_CryptoHandler* pHandler = m_pCryptoHandler; |
| encryptor.Initialize(pHandler, objnum, encoder.m_pData, encoder.m_dwSize); |
| if ((FX_DWORD)encoder.m_pDict->GetInteger(FX_BSTRC("Length")) != encryptor.m_dwSize) { |
| encoder.CloneDict(); |
| encoder.m_pDict->SetAtInteger(FX_BSTRC("Length"), encryptor.m_dwSize); |
| } |
| if (WriteDirectObj(objnum, encoder.m_pDict) < 0) { |
| return -1; |
| } |
| if ((len = m_File.AppendString(FX_BSTRC("stream\r\n"))) < 0) { |
| return -1; |
| } |
| m_Offset += len; |
| if (m_File.AppendBlock(encryptor.m_pData, encryptor.m_dwSize) < 0) { |
| return -1; |
| } |
| m_Offset += encryptor.m_dwSize; |
| if ((len = m_File.AppendString(FX_BSTRC("\r\nendstream"))) < 0) { |
| return -1; |
| } |
| m_Offset += len; |
| break; |
| } |
| case PDFOBJ_NAME: { |
| if (m_File.AppendString(FX_BSTRC("/")) < 0) { |
| return -1; |
| } |
| CFX_ByteString str = pObj->GetString(); |
| if ((len = m_File.AppendString(PDF_NameEncode(str))) < 0) { |
| return -1; |
| } |
| m_Offset += len + 1; |
| break; |
| } |
| case PDFOBJ_REFERENCE: { |
| if (m_File.AppendString(FX_BSTRC(" ")) < 0) { |
| return -1; |
| } |
| CPDF_Reference* p = (CPDF_Reference*)pObj; |
| if ((len = m_File.AppendDWord(p->GetRefObjNum())) < 0) { |
| return -1; |
| } |
| if (m_File.AppendString(FX_BSTRC(" 0 R")) < 0) { |
| return -1; |
| } |
| m_Offset += len + 5; |
| break; |
| } |
| case PDFOBJ_ARRAY: { |
| if (m_File.AppendString(FX_BSTRC("[")) < 0) { |
| return -1; |
| } |
| m_Offset += 1; |
| CPDF_Array* p = (CPDF_Array*)pObj; |
| for (FX_DWORD i = 0; i < p->GetCount(); i ++) { |
| CPDF_Object* pElement = p->GetElement(i); |
| if (pElement->GetObjNum()) { |
| if (m_File.AppendString(FX_BSTRC(" ")) < 0) { |
| return -1; |
| } |
| if ((len = m_File.AppendDWord(pElement->GetObjNum())) < 0) { |
| return -1; |
| } |
| if (m_File.AppendString(FX_BSTRC(" 0 R")) < 0) { |
| return -1; |
| } |
| m_Offset += len + 5; |
| } else { |
| if (WriteDirectObj(objnum, pElement) < 0) { |
| return -1; |
| } |
| } |
| } |
| if (m_File.AppendString(FX_BSTRC("]")) < 0) { |
| return -1; |
| } |
| m_Offset += 1; |
| break; |
| } |
| case PDFOBJ_DICTIONARY: { |
| if (m_pCryptoHandler == NULL || pObj == m_pEncryptDict) { |
| return PDF_CreatorAppendObject(pObj, &m_File, m_Offset); |
| } |
| if (m_File.AppendString(FX_BSTRC("<<")) < 0) { |
| return -1; |
| } |
| m_Offset += 2; |
| CPDF_Dictionary* p = (CPDF_Dictionary*)pObj; |
| FX_BOOL bSignDict = IsSignatureDict(p); |
| FX_POSITION pos = p->GetStartPos(); |
| while (pos) { |
| FX_BOOL bSignValue = FALSE; |
| CFX_ByteString key; |
| CPDF_Object* pValue = p->GetNextElement(pos, key); |
| if (m_File.AppendString(FX_BSTRC("/")) < 0) { |
| return -1; |
| } |
| if ((len = m_File.AppendString(PDF_NameEncode(key))) < 0) { |
| return -1; |
| } |
| m_Offset += len + 1; |
| if (bSignDict && key == FX_BSTRC("Contents")) { |
| bSignValue = TRUE; |
| } |
| if (pValue->GetObjNum()) { |
| if (m_File.AppendString(FX_BSTRC(" ")) < 0) { |
| return -1; |
| } |
| if ((len = m_File.AppendDWord(pValue->GetObjNum())) < 0) { |
| return -1; |
| } |
| if (m_File.AppendString(FX_BSTRC(" 0 R ")) < 0) { |
| return -1; |
| } |
| m_Offset += len + 6; |
| } else { |
| if (WriteDirectObj(objnum, pValue, !bSignValue) < 0) { |
| return -1; |
| } |
| } |
| } |
| if (m_File.AppendString(FX_BSTRC(">>")) < 0) { |
| return -1; |
| } |
| m_Offset += 2; |
| break; |
| } |
| } |
| return 1; |
| } |
| FX_INT32 CPDF_Creator::WriteOldIndirectObject(FX_DWORD objnum) |
| { |
| if(m_pParser->m_V5Type[objnum] == 0 || m_pParser->m_V5Type[objnum] == 255) { |
| return 0; |
| } |
| m_ObjectOffset[objnum] = m_Offset; |
| FX_LPVOID valuetemp = NULL; |
| FX_BOOL bExistInMap = m_pDocument->m_IndirectObjs.Lookup((FX_LPVOID)(FX_UINTPTR)objnum, valuetemp); |
| FX_BOOL bObjStm = (m_pParser->m_V5Type[objnum] == 2) && m_pEncryptDict && !m_pXRefStream; |
| if(m_pParser->m_bVersionUpdated || m_bSecurityChanged || bExistInMap || bObjStm) { |
| CPDF_Object* pObj = m_pDocument->GetIndirectObject(objnum); |
| if (pObj == NULL) { |
| m_ObjectOffset[objnum] = 0; |
| m_ObjectSize[objnum] = 0; |
| return 0; |
| } |
| if (WriteIndirectObj(pObj)) { |
| return -1; |
| } |
| if (!bExistInMap) { |
| m_pDocument->ReleaseIndirectObject(objnum); |
| } |
| } else { |
| FX_BYTE* pBuffer; |
| FX_DWORD size; |
| m_pParser->GetIndirectBinary(objnum, pBuffer, size); |
| if (pBuffer == NULL) { |
| return 0; |
| } |
| if (m_pParser->m_V5Type[objnum] == 2) { |
| if (m_pXRefStream) { |
| if (WriteIndirectObjectToStream(objnum, pBuffer, size) < 0) { |
| FX_Free(pBuffer); |
| return -1; |
| } |
| } else { |
| FX_INT32 len = m_File.AppendDWord(objnum); |
| if (len < 0) { |
| return -1; |
| } |
| if (m_File.AppendString(FX_BSTRC(" 0 obj ")) < 0) { |
| return -1; |
| } |
| m_Offset += len + 7; |
| if (m_File.AppendBlock(pBuffer, size) < 0) { |
| return -1; |
| } |
| m_Offset += size; |
| if (m_File.AppendString(FX_BSTRC("\r\nendobj\r\n")) < 0) { |
| return -1; |
| } |
| m_Offset += 10; |
| } |
| } else { |
| if (m_File.AppendBlock(pBuffer, size) < 0) { |
| return -1; |
| } |
| m_Offset += size; |
| if(AppendObjectNumberToXRef(objnum) < 0) { |
| return -1; |
| } |
| } |
| FX_Free(pBuffer); |
| } |
| return 1; |
| } |
| FX_INT32 CPDF_Creator::WriteOldObjs(IFX_Pause *pPause) |
| { |
| FX_DWORD nOldSize = m_pParser->m_CrossRef.GetSize(); |
| FX_DWORD objnum = (FX_DWORD)(FX_UINTPTR)m_Pos; |
| for(; objnum < nOldSize; objnum ++) { |
| FX_INT32 iRet = WriteOldIndirectObject(objnum); |
| if (!iRet) { |
| continue; |
| } |
| if (iRet < 0) { |
| return iRet; |
| } |
| m_ObjectSize[objnum] = (FX_DWORD)(m_Offset - m_ObjectOffset[objnum]); |
| if (pPause && pPause->NeedToPauseNow()) { |
| m_Pos = (FX_LPVOID)(FX_UINTPTR)(objnum + 1); |
| return 1; |
| } |
| } |
| return 0; |
| } |
| FX_INT32 CPDF_Creator::WriteNewObjs(FX_BOOL bIncremental, IFX_Pause *pPause) |
| { |
| FX_INT32 iCount = m_NewObjNumArray.GetSize(); |
| FX_INT32 index = (FX_INT32)(FX_UINTPTR)m_Pos; |
| while (index < iCount) { |
| FX_DWORD objnum = m_NewObjNumArray.ElementAt(index); |
| CPDF_Object *pObj = NULL; |
| m_pDocument->m_IndirectObjs.Lookup((FX_LPVOID)(FX_UINTPTR)objnum, (FX_LPVOID&)pObj); |
| if (NULL == pObj) { |
| ++index; |
| continue; |
| } |
| m_ObjectOffset[objnum] = m_Offset; |
| if (WriteIndirectObj(pObj)) { |
| return -1; |
| } |
| m_ObjectSize[objnum] = (FX_DWORD)(m_Offset - m_ObjectOffset[objnum]); |
| index++; |
| if (pPause && pPause->NeedToPauseNow()) { |
| m_Pos = (FX_POSITION)(FX_UINTPTR)index; |
| return 1; |
| } |
| } |
| return 0; |
| } |
| void CPDF_Creator::InitOldObjNumOffsets() |
| { |
| if (!m_pParser) { |
| return; |
| } |
| FX_DWORD j = 0; |
| FX_DWORD dwStart = 0; |
| FX_DWORD dwEnd = m_pParser->GetLastObjNum(); |
| while (dwStart <= dwEnd) { |
| while (dwStart <= dwEnd && (m_pParser->m_V5Type[dwStart] == 0 || m_pParser->m_V5Type[dwStart] == 255)) { |
| dwStart++; |
| } |
| if (dwStart > dwEnd) { |
| break; |
| } |
| j = dwStart; |
| while (j <= dwEnd && m_pParser->m_V5Type[j] != 0 && m_pParser->m_V5Type[j] != 255) { |
| j++; |
| } |
| m_ObjectOffset.Add(dwStart, j - dwStart); |
| m_ObjectSize.Add(dwStart, j - dwStart); |
| dwStart = j; |
| } |
| } |
| void CPDF_Creator::InitNewObjNumOffsets() |
| { |
| FX_BOOL bIncremental = (m_dwFlags & FPDFCREATE_INCREMENTAL) != 0; |
| FX_BOOL bNoOriginal = (m_dwFlags & FPDFCREATE_NO_ORIGINAL) != 0; |
| FX_DWORD nOldSize = m_pParser ? m_pParser->m_CrossRef.GetSize() : 0; |
| FX_POSITION pos = m_pDocument->m_IndirectObjs.GetStartPosition(); |
| while (pos) { |
| size_t key = 0; |
| CPDF_Object* pObj; |
| m_pDocument->m_IndirectObjs.GetNextAssoc(pos, (FX_LPVOID&)key, (FX_LPVOID&)pObj); |
| FX_DWORD objnum = (FX_DWORD)key; |
| if (pObj->GetObjNum() == -1) { |
| continue; |
| } |
| if (bIncremental) { |
| if (!pObj->IsModified()) { |
| continue; |
| } |
| } else { |
| if (objnum < nOldSize && m_pParser->m_V5Type[objnum] != 0) { |
| continue; |
| } |
| } |
| AppendNewObjNum(objnum); |
| } |
| FX_INT32 iCount = m_NewObjNumArray.GetSize(); |
| if (iCount == 0) { |
| return; |
| } |
| FX_INT32 i = 0; |
| FX_DWORD dwStartObjNum = 0; |
| FX_BOOL bCrossRefValid = m_pParser && m_pParser->GetLastXRefOffset() > 0; |
| while (i < iCount) { |
| dwStartObjNum = m_NewObjNumArray.ElementAt(i); |
| if ((bIncremental && (bNoOriginal || bCrossRefValid)) || !m_ObjectOffset.GetPtrAt(dwStartObjNum)) { |
| break; |
| } |
| i++; |
| } |
| if (i >= iCount) { |
| return; |
| } |
| FX_DWORD dwLastObjNum = dwStartObjNum; |
| i++; |
| FX_BOOL bNewStart = FALSE; |
| for (; i < iCount; i++) { |
| FX_DWORD dwCurObjNum = m_NewObjNumArray.ElementAt(i); |
| FX_BOOL bExist = (dwCurObjNum < nOldSize && m_ObjectOffset.GetPtrAt(dwCurObjNum) != NULL); |
| if (bExist || dwCurObjNum - dwLastObjNum > 1) { |
| if (!bNewStart) { |
| m_ObjectOffset.Add(dwStartObjNum, dwLastObjNum - dwStartObjNum + 1); |
| m_ObjectSize.Add(dwStartObjNum, dwLastObjNum - dwStartObjNum + 1); |
| } |
| dwStartObjNum = dwCurObjNum; |
| } |
| if (bNewStart) { |
| dwStartObjNum = dwCurObjNum; |
| } |
| bNewStart = bExist; |
| dwLastObjNum = dwCurObjNum; |
| } |
| m_ObjectOffset.Add(dwStartObjNum, dwLastObjNum - dwStartObjNum + 1); |
| m_ObjectSize.Add(dwStartObjNum, dwLastObjNum - dwStartObjNum + 1); |
| } |
| void CPDF_Creator::AppendNewObjNum(FX_DWORD objbum) |
| { |
| FX_INT32 iStart = 0, iFind = 0; |
| FX_INT32 iEnd = m_NewObjNumArray.GetUpperBound(); |
| while (iStart <= iEnd) { |
| FX_INT32 iMid = (iStart + iEnd) / 2; |
| FX_DWORD dwMid = m_NewObjNumArray.ElementAt(iMid); |
| if (objbum < dwMid) { |
| iEnd = iMid - 1; |
| } else { |
| if (iMid == iEnd) { |
| iFind = iMid + 1; |
| break; |
| } |
| FX_DWORD dwNext = m_NewObjNumArray.ElementAt(iMid + 1); |
| if (objbum < dwNext) { |
| iFind = iMid + 1; |
| break; |
| } |
| iStart = iMid + 1; |
| } |
| } |
| m_NewObjNumArray.InsertAt(iFind, objbum); |
| } |
| FX_INT32 CPDF_Creator::WriteDoc_Stage1(IFX_Pause *pPause) |
| { |
| FXSYS_assert(m_iStage > -1 || m_iStage < 20); |
| if (m_iStage == 0) { |
| if (m_pParser == NULL) { |
| m_dwFlags &= ~FPDFCREATE_INCREMENTAL; |
| } |
| if (m_bSecurityChanged && (m_dwFlags & FPDFCREATE_NO_ORIGINAL) == 0) { |
| m_dwFlags &= ~FPDFCREATE_INCREMENTAL; |
| } |
| CPDF_Dictionary* pDict = m_pDocument->GetRoot(); |
| m_pMetadata = pDict ? pDict->GetElementValue(FX_BSTRC("Metadata")) : NULL; |
| if (m_dwFlags & FPDFCREATE_OBJECTSTREAM) { |
| m_pXRefStream = new CPDF_XRefStream; |
| m_pXRefStream->Start(); |
| if ((m_dwFlags & FPDFCREATE_INCREMENTAL) != 0 && m_pParser) { |
| FX_FILESIZE prev = m_pParser->GetLastXRefOffset(); |
| m_pXRefStream->m_PrevOffset = prev; |
| } |
| } |
| m_iStage = 10; |
| } |
| if (m_iStage == 10) { |
| if ((m_dwFlags & FPDFCREATE_INCREMENTAL) == 0) { |
| if (m_File.AppendString(FX_BSTRC("%PDF-1.")) < 0) { |
| return -1; |
| } |
| m_Offset += 7; |
| FX_INT32 version = 7; |
| if (m_FileVersion) { |
| version = m_FileVersion; |
| } else if (m_pParser) { |
| version = m_pParser->GetFileVersion(); |
| } |
| FX_INT32 len = m_File.AppendDWord(version % 10); |
| if (len < 0) { |
| return -1; |
| } |
| m_Offset += len; |
| if ((len = m_File.AppendString(FX_BSTRC("\r\n%\xA1\xB3\xC5\xD7\r\n"))) < 0) { |
| return -1; |
| } |
| m_Offset += len; |
| InitOldObjNumOffsets(); |
| m_iStage = 20; |
| } else { |
| IFX_FileRead* pSrcFile = m_pParser->GetFileAccess(); |
| m_Offset = pSrcFile->GetSize(); |
| m_Pos = (FX_LPVOID)(FX_UINTPTR)m_Offset; |
| m_iStage = 15; |
| } |
| } |
| if (m_iStage == 15) { |
| if ((m_dwFlags & FPDFCREATE_NO_ORIGINAL) == 0 && m_Pos) { |
| IFX_FileRead* pSrcFile = m_pParser->GetFileAccess(); |
| FX_BYTE buffer[4096]; |
| FX_DWORD src_size = (FX_DWORD)(FX_UINTPTR)m_Pos; |
| while (src_size) { |
| FX_DWORD block_size = src_size > 4096 ? 4096 : src_size; |
| if (!pSrcFile->ReadBlock(buffer, m_Offset - src_size, block_size)) { |
| return -1; |
| } |
| if (m_File.AppendBlock(buffer, block_size) < 0) { |
| return -1; |
| } |
| src_size -= block_size; |
| if (pPause && pPause->NeedToPauseNow()) { |
| m_Pos = (FX_LPVOID)(FX_UINTPTR)src_size; |
| return 1; |
| } |
| } |
| } |
| if ((m_dwFlags & FPDFCREATE_NO_ORIGINAL) == 0 && m_pParser->GetLastXRefOffset() == 0) { |
| InitOldObjNumOffsets(); |
| FX_DWORD dwEnd = m_pParser->GetLastObjNum(); |
| FX_BOOL bObjStm = (m_dwFlags & FPDFCREATE_OBJECTSTREAM) != 0; |
| for (FX_DWORD objnum = 0; objnum <= dwEnd; objnum++) { |
| if (m_pParser->m_V5Type[objnum] == 0 || m_pParser->m_V5Type[objnum] == 255) { |
| continue; |
| } |
| m_ObjectOffset[objnum] = m_pParser->m_CrossRef[objnum]; |
| if (bObjStm) { |
| m_pXRefStream->AddObjectNumberToIndexArray(objnum); |
| } |
| } |
| if (bObjStm) { |
| m_pXRefStream->EndXRefStream(this); |
| m_pXRefStream->Start(); |
| } |
| } |
| m_iStage = 20; |
| } |
| InitNewObjNumOffsets(); |
| return m_iStage; |
| } |
| FX_INT32 CPDF_Creator::WriteDoc_Stage2(IFX_Pause *pPause) |
| { |
| FXSYS_assert(m_iStage >= 20 || m_iStage < 30); |
| if (m_iStage == 20) { |
| if ((m_dwFlags & FPDFCREATE_INCREMENTAL) == 0 && m_pParser) { |
| m_Pos = (FX_LPVOID)(FX_UINTPTR)0; |
| m_iStage = 21; |
| } else { |
| m_iStage = 25; |
| } |
| } |
| if (m_iStage == 21) { |
| FX_INT32 iRet = WriteOldObjs(pPause); |
| if (iRet) { |
| return iRet; |
| } |
| m_iStage = 25; |
| } |
| if (m_iStage == 25) { |
| m_Pos = (FX_LPVOID)(FX_UINTPTR)0; |
| m_iStage = 26; |
| } |
| if (m_iStage == 26) { |
| FX_INT32 iRet = WriteNewObjs((m_dwFlags & FPDFCREATE_INCREMENTAL) != 0, pPause); |
| if (iRet) { |
| return iRet; |
| } |
| m_iStage = 27; |
| } |
| if (m_iStage == 27) { |
| if (NULL != m_pEncryptDict && 0 == m_pEncryptDict->GetObjNum()) { |
| m_dwLastObjNum += 1; |
| FX_FILESIZE saveOffset = m_Offset; |
| if (WriteIndirectObj(m_dwLastObjNum, m_pEncryptDict) < 0) { |
| return -1; |
| } |
| m_ObjectOffset.Add(m_dwLastObjNum, 1); |
| m_ObjectOffset[m_dwLastObjNum] = saveOffset; |
| m_ObjectSize.Add(m_dwLastObjNum, 1); |
| m_ObjectSize[m_dwLastObjNum] = m_Offset - saveOffset; |
| m_dwEnryptObjNum = m_dwLastObjNum; |
| if (m_dwFlags & FPDFCREATE_INCREMENTAL) { |
| m_NewObjNumArray.Add(m_dwLastObjNum); |
| } |
| } |
| m_iStage = 80; |
| } |
| return m_iStage; |
| } |
| FX_INT32 CPDF_Creator::WriteDoc_Stage3(IFX_Pause *pPause) |
| { |
| FXSYS_assert(m_iStage >= 80 || m_iStage < 90); |
| FX_DWORD dwLastObjNum = m_dwLastObjNum; |
| if (m_iStage == 80) { |
| m_XrefStart = m_Offset; |
| if (m_dwFlags & FPDFCREATE_OBJECTSTREAM) { |
| m_pXRefStream->End(this, TRUE); |
| m_XrefStart = m_pXRefStream->m_PrevOffset; |
| m_iStage = 90; |
| } else if ((m_dwFlags & FPDFCREATE_INCREMENTAL) == 0 || !m_pParser->IsXRefStream()) { |
| if ((m_dwFlags & FPDFCREATE_INCREMENTAL) == 0 || m_pParser->GetLastXRefOffset() == 0) { |
| CFX_ByteString str; |
| str = m_ObjectOffset.GetPtrAt(1) ? FX_BSTRC("xref\r\n") : FX_BSTRC("xref\r\n0 1\r\n0000000000 65536 f\r\n"); |
| if (m_File.AppendString(str) < 0) { |
| return -1; |
| } |
| m_Pos = (FX_LPVOID)(FX_UINTPTR)1; |
| m_iStage = 81; |
| } else { |
| if (m_File.AppendString(FX_BSTRC("xref\r\n")) < 0) { |
| return -1; |
| } |
| m_Pos = (FX_LPVOID)(FX_UINTPTR)0; |
| m_iStage = 82; |
| } |
| } else { |
| m_iStage = 90; |
| } |
| } |
| if (m_iStage == 81) { |
| CFX_ByteString str; |
| FX_DWORD i = (FX_DWORD)(FX_UINTPTR)m_Pos, j; |
| while (i <= dwLastObjNum) { |
| while (i <= dwLastObjNum && !m_ObjectOffset.GetPtrAt(i)) { |
| i++; |
| } |
| if (i > dwLastObjNum) { |
| break; |
| } |
| j = i; |
| while (j <= dwLastObjNum && m_ObjectOffset.GetPtrAt(j)) { |
| j++; |
| } |
| if (i == 1) { |
| str.Format("0 %d\r\n0000000000 65536 f\r\n", j); |
| } else { |
| str.Format("%d %d\r\n", i, j - i); |
| } |
| if (m_File.AppendBlock(str.c_str(), str.GetLength()) < 0) { |
| return -1; |
| } |
| while (i < j) { |
| str.Format("%010d 00000 n\r\n", m_ObjectOffset[i ++]); |
| if (m_File.AppendBlock(str.c_str(), str.GetLength()) < 0) { |
| return -1; |
| } |
| } |
| if (i > dwLastObjNum) { |
| break; |
| } |
| if (pPause && pPause->NeedToPauseNow()) { |
| m_Pos = (FX_LPVOID)(FX_UINTPTR)i; |
| return 1; |
| } |
| } |
| m_iStage = 90; |
| } |
| if (m_iStage == 82) { |
| CFX_ByteString str; |
| FX_INT32 iCount = m_NewObjNumArray.GetSize(); |
| FX_INT32 i = (FX_INT32)(FX_UINTPTR)m_Pos; |
| while (i < iCount) { |
| FX_INT32 j = i; |
| FX_DWORD objnum = m_NewObjNumArray.ElementAt(i); |
| while (j < iCount) { |
| if (++j == iCount) { |
| break; |
| } |
| FX_DWORD dwCurrent = m_NewObjNumArray.ElementAt(j); |
| if (dwCurrent - objnum > 1) { |
| break; |
| } |
| objnum = dwCurrent; |
| } |
| objnum = m_NewObjNumArray.ElementAt(i); |
| if (objnum == 1) { |
| str.Format("0 %d\r\n0000000000 65536 f\r\n", j - i + 1); |
| } else { |
| str.Format("%d %d\r\n", objnum, j - i); |
| } |
| if (m_File.AppendBlock(str.c_str(), str.GetLength()) < 0) { |
| return -1; |
| } |
| while (i < j) { |
| objnum = m_NewObjNumArray.ElementAt(i++); |
| str.Format("%010d 00000 n\r\n", m_ObjectOffset[objnum]); |
| if (m_File.AppendBlock(str.c_str(), str.GetLength()) < 0) { |
| return -1; |
| } |
| } |
| if (pPause && (i % 100) == 0 && pPause->NeedToPauseNow()) { |
| m_Pos = (FX_LPVOID)(FX_UINTPTR)i; |
| return 1; |
| } |
| } |
| m_iStage = 90; |
| } |
| return m_iStage; |
| } |
| static FX_INT32 _OutPutIndex(CFX_FileBufferArchive* pFile, FX_FILESIZE offset) |
| { |
| FXSYS_assert(pFile); |
| if (sizeof(offset) > 4) { |
| if (FX_GETBYTEOFFSET32(offset)) { |
| if (pFile->AppendByte(FX_GETBYTEOFFSET56(offset)) < 0) { |
| return -1; |
| } |
| if (pFile->AppendByte(FX_GETBYTEOFFSET48(offset)) < 0) { |
| return -1; |
| } |
| if (pFile->AppendByte(FX_GETBYTEOFFSET40(offset)) < 0) { |
| return -1; |
| } |
| if (pFile->AppendByte(FX_GETBYTEOFFSET32(offset)) < 0) { |
| return -1; |
| } |
| } |
| } |
| if (pFile->AppendByte(FX_GETBYTEOFFSET24(offset)) < 0) { |
| return -1; |
| } |
| if (pFile->AppendByte(FX_GETBYTEOFFSET16(offset)) < 0) { |
| return -1; |
| } |
| if (pFile->AppendByte(FX_GETBYTEOFFSET8(offset)) < 0) { |
| return -1; |
| } |
| if (pFile->AppendByte(FX_GETBYTEOFFSET0(offset)) < 0) { |
| return -1; |
| } |
| if (pFile->AppendByte(0) < 0) { |
| return -1; |
| } |
| return 0; |
| } |
| FX_INT32 CPDF_Creator::WriteDoc_Stage4(IFX_Pause *pPause) |
| { |
| FXSYS_assert(m_iStage >= 90); |
| if ((m_dwFlags & FPDFCREATE_OBJECTSTREAM) == 0) { |
| FX_BOOL bXRefStream = (m_dwFlags & FPDFCREATE_INCREMENTAL) != 0 && m_pParser->IsXRefStream(); |
| if (!bXRefStream) { |
| if (m_File.AppendString(FX_BSTRC("trailer\r\n<<")) < 0) { |
| return -1; |
| } |
| } else { |
| if (m_File.AppendDWord(m_pDocument->m_LastObjNum + 1) < 0) { |
| return -1; |
| } |
| if (m_File.AppendString(FX_BSTRC(" 0 obj <<")) < 0) { |
| return -1; |
| } |
| } |
| if (m_pParser) { |
| CPDF_Dictionary* p = m_pParser->m_pTrailer; |
| FX_POSITION pos = p->GetStartPos(); |
| while (pos) { |
| CFX_ByteString key; |
| CPDF_Object* pValue = p->GetNextElement(pos, key); |
| if (key == FX_BSTRC("Encrypt") || key == FX_BSTRC("Size") || key == FX_BSTRC("Filter") || |
| key == FX_BSTRC("Index") || key == FX_BSTRC("Length") || key == FX_BSTRC("Prev") || |
| key == FX_BSTRC("W") || key == FX_BSTRC("XRefStm") || key == FX_BSTRC("ID")) { |
| continue; |
| } |
| if (m_File.AppendString((FX_BSTRC("/"))) < 0) { |
| return -1; |
| } |
| if (m_File.AppendString(PDF_NameEncode(key)) < 0) { |
| return -1; |
| } |
| if (pValue->GetObjNum()) { |
| if (m_File.AppendString(FX_BSTRC(" ")) < 0) { |
| return -1; |
| } |
| if (m_File.AppendDWord(pValue->GetObjNum()) < 0) { |
| return -1; |
| } |
| if (m_File.AppendString(FX_BSTRC(" 0 R ")) < 0) { |
| return -1; |
| } |
| } else { |
| FX_FILESIZE offset = 0; |
| if (PDF_CreatorAppendObject(pValue, &m_File, offset) < 0) { |
| return -1; |
| } |
| } |
| } |
| } else { |
| if (m_File.AppendString(FX_BSTRC("\r\n/Root ")) < 0) { |
| return -1; |
| } |
| if (m_File.AppendDWord(m_pDocument->m_pRootDict->GetObjNum()) < 0) { |
| return -1; |
| } |
| if (m_File.AppendString(FX_BSTRC(" 0 R\r\n")) < 0) { |
| return -1; |
| } |
| if (m_pDocument->m_pInfoDict) { |
| if (m_File.AppendString(FX_BSTRC("/Info ")) < 0) { |
| return -1; |
| } |
| if (m_File.AppendDWord(m_pDocument->m_pInfoDict->GetObjNum()) < 0) { |
| return -1; |
| } |
| if (m_File.AppendString(FX_BSTRC(" 0 R\r\n")) < 0) { |
| return -1; |
| } |
| } |
| } |
| if (m_pEncryptDict) { |
| if (m_File.AppendString(FX_BSTRC("/Encrypt")) < 0) { |
| return -1; |
| } |
| FX_DWORD dwObjNum = m_pEncryptDict->GetObjNum(); |
| if (dwObjNum == 0) { |
| dwObjNum = m_pDocument->GetLastObjNum() + 1; |
| } |
| if (m_File.AppendString(FX_BSTRC(" ")) < 0) { |
| return -1; |
| } |
| if (m_File.AppendDWord(dwObjNum) < 0) { |
| return -1; |
| } |
| if (m_File.AppendString(FX_BSTRC(" 0 R ")) < 0) { |
| return -1; |
| } |
| } |
| if (m_File.AppendString(FX_BSTRC("/Size ")) < 0) { |
| return -1; |
| } |
| if (m_File.AppendDWord(m_dwLastObjNum + (bXRefStream ? 2 : 1)) < 0) { |
| return -1; |
| } |
| if ((m_dwFlags & FPDFCREATE_INCREMENTAL) != 0) { |
| FX_FILESIZE prev = m_pParser->GetLastXRefOffset(); |
| if (prev) { |
| if (m_File.AppendString(FX_BSTRC("/Prev ")) < 0) { |
| return -1; |
| } |
| FX_CHAR offset_buf[20]; |
| FXSYS_memset32(offset_buf, 0, sizeof(offset_buf)); |
| FXSYS_i64toa(prev, offset_buf, 10); |
| if (m_File.AppendBlock(offset_buf, FXSYS_strlen(offset_buf)) < 0) { |
| return -1; |
| } |
| } |
| } |
| if (m_pIDArray) { |
| if (m_File.AppendString((FX_BSTRC("/ID"))) < 0) { |
| return -1; |
| } |
| FX_FILESIZE offset = 0; |
| if (PDF_CreatorAppendObject(m_pIDArray, &m_File, offset) < 0) { |
| return -1; |
| } |
| } |
| if (!bXRefStream) { |
| if (m_File.AppendString(FX_BSTRC(">>")) < 0) { |
| return -1; |
| } |
| } else { |
| if (m_File.AppendString(FX_BSTRC("/W[0 4 1]/Index[")) < 0) { |
| return -1; |
| } |
| if ((m_dwFlags & FPDFCREATE_INCREMENTAL) != 0 && m_pParser && m_pParser->GetLastXRefOffset() == 0) { |
| FX_DWORD i = 0; |
| for (i = 0; i < m_dwLastObjNum; i++) { |
| if (!m_ObjectOffset.GetPtrAt(i)) { |
| continue; |
| } |
| if (m_File.AppendDWord(i) < 0) { |
| return -1; |
| } |
| if (m_File.AppendString(FX_BSTRC(" 1 ")) < 0) { |
| return -1; |
| } |
| } |
| if (m_File.AppendString(FX_BSTRC("]/Length ")) < 0) { |
| return -1; |
| } |
| if (m_File.AppendDWord(m_dwLastObjNum * 5) < 0) { |
| return -1; |
| } |
| if (m_File.AppendString(FX_BSTRC(">>stream\r\n")) < 0) { |
| return -1; |
| } |
| for (i = 0; i < m_dwLastObjNum; i++) { |
| FX_FILESIZE* offset = m_ObjectOffset.GetPtrAt(i); |
| if (!offset) { |
| continue; |
| } |
| _OutPutIndex(&m_File, *offset); |
| } |
| } else { |
| int count = m_NewObjNumArray.GetSize(); |
| FX_INT32 i = 0; |
| for (i = 0; i < count; i++) { |
| FX_DWORD objnum = m_NewObjNumArray.ElementAt(i); |
| if (m_File.AppendDWord(objnum) < 0) { |
| return -1; |
| } |
| if (m_File.AppendString(FX_BSTRC(" 1 ")) < 0) { |
| return -1; |
| } |
| } |
| if (m_File.AppendString(FX_BSTRC("]/Length ")) < 0) { |
| return -1; |
| } |
| if (m_File.AppendDWord(count * 5) < 0) { |
| return -1; |
| } |
| if (m_File.AppendString(FX_BSTRC(">>stream\r\n")) < 0) { |
| return -1; |
| } |
| for (i = 0; i < count; i++) { |
| FX_DWORD objnum = m_NewObjNumArray.ElementAt(i); |
| FX_FILESIZE offset = m_ObjectOffset[objnum]; |
| _OutPutIndex(&m_File, offset); |
| } |
| } |
| if (m_File.AppendString(FX_BSTRC("\r\nendstream")) < 0) { |
| return -1; |
| } |
| } |
| } |
| if (m_File.AppendString(FX_BSTRC("\r\nstartxref\r\n")) < 0) { |
| return -1; |
| } |
| FX_CHAR offset_buf[20]; |
| FXSYS_memset32(offset_buf, 0, sizeof(offset_buf)); |
| FXSYS_i64toa(m_XrefStart, offset_buf, 10); |
| if (m_File.AppendBlock(offset_buf, FXSYS_strlen(offset_buf)) < 0) { |
| return -1; |
| } |
| if (m_File.AppendString(FX_BSTRC("\r\n%%EOF\r\n")) < 0) { |
| return -1; |
| } |
| m_File.Flush(); |
| return m_iStage = 100; |
| } |
| void CPDF_Creator::Clear() |
| { |
| if (m_pXRefStream) { |
| delete m_pXRefStream; |
| m_pXRefStream = NULL; |
| } |
| m_File.Clear(); |
| m_NewObjNumArray.RemoveAll(); |
| if (m_pIDArray) { |
| m_pIDArray->Release(); |
| m_pIDArray = NULL; |
| } |
| } |
| FX_BOOL CPDF_Creator::Create(FX_LPCSTR filename, FX_DWORD flags) |
| { |
| if (!m_File.AttachFile(filename)) { |
| return FALSE; |
| } |
| FX_BOOL bRet = Create(flags); |
| if (!bRet || !(flags & FPDFCREATE_PROGRESSIVE)) { |
| Clear(); |
| } |
| return bRet; |
| } |
| FX_BOOL CPDF_Creator::Create(FX_LPCWSTR filename, FX_DWORD flags) |
| { |
| if (!m_File.AttachFile(filename)) { |
| return FALSE; |
| } |
| FX_BOOL bRet = Create(flags); |
| if (!bRet || !(flags & FPDFCREATE_PROGRESSIVE)) { |
| Clear(); |
| } |
| return bRet; |
| } |
| FX_BOOL CPDF_Creator::Create(IFX_StreamWrite* pFile, FX_DWORD flags) |
| { |
| if (!pFile) { |
| return FALSE; |
| } |
| if (!m_File.AttachFile(pFile, FALSE)) { |
| return FALSE; |
| } |
| return Create(flags); |
| } |
| FX_BOOL CPDF_Creator::Create(FX_DWORD flags) |
| { |
| m_dwFlags = flags; |
| m_iStage = 0; |
| m_Offset = 0; |
| m_dwLastObjNum = m_pDocument->GetLastObjNum(); |
| m_ObjectOffset.Clear(); |
| m_ObjectSize.Clear(); |
| m_NewObjNumArray.RemoveAll(); |
| InitID(); |
| if (flags & FPDFCREATE_PROGRESSIVE) { |
| return TRUE; |
| } |
| return Continue(NULL) > -1; |
| } |
| void CPDF_Creator::InitID(FX_BOOL bDefault ) |
| { |
| CPDF_Array* pOldIDArray = m_pParser ? m_pParser->GetIDArray() : NULL; |
| FX_BOOL bNewId = !m_pIDArray; |
| if (!m_pIDArray) { |
| FX_LPDWORD pBuffer = NULL; |
| m_pIDArray = CPDF_Array::Create(); |
| CPDF_Object* pID1 = pOldIDArray ? pOldIDArray->GetElement(0) : NULL; |
| if (pID1) { |
| m_pIDArray->Add(pID1->Clone()); |
| } else { |
| pBuffer = FX_Alloc(FX_DWORD, 4); |
| PDF_GenerateFileID((FX_DWORD)(FX_UINTPTR)this, m_dwLastObjNum, pBuffer); |
| CFX_ByteStringC bsBuffer((FX_LPCBYTE)pBuffer, 4 * sizeof(FX_DWORD)); |
| m_pIDArray->Add(CPDF_String::Create(bsBuffer, TRUE), m_pDocument); |
| } |
| if (pBuffer) { |
| FX_Free(pBuffer); |
| } |
| } |
| if (!bDefault) { |
| return; |
| } |
| if (pOldIDArray) { |
| CPDF_Object* pID2 = pOldIDArray->GetElement(1); |
| if ((m_dwFlags & FPDFCREATE_INCREMENTAL) && m_pEncryptDict && pID2) { |
| m_pIDArray->Add(pID2->Clone()); |
| return; |
| } |
| FX_LPDWORD pBuffer = FX_Alloc(FX_DWORD, 4); |
| PDF_GenerateFileID((FX_DWORD)(FX_UINTPTR)this, m_dwLastObjNum, pBuffer); |
| CFX_ByteStringC bsBuffer((FX_LPCBYTE)pBuffer, 4 * sizeof(FX_DWORD)); |
| m_pIDArray->Add(CPDF_String::Create(bsBuffer, TRUE), m_pDocument); |
| FX_Free(pBuffer); |
| return; |
| } |
| m_pIDArray->Add(m_pIDArray->GetElement(0)->Clone()); |
| if (m_pEncryptDict && !pOldIDArray && m_pParser && bNewId) { |
| if (m_pEncryptDict->GetString(FX_BSTRC("Filter")) == FX_BSTRC("Standard")) { |
| CPDF_StandardSecurityHandler handler; |
| CFX_ByteString user_pass = m_pParser->GetPassword(); |
| FX_DWORD flag = PDF_ENCRYPT_CONTENT; |
| handler.OnCreate(m_pEncryptDict, m_pIDArray, (FX_LPCBYTE)user_pass, user_pass.GetLength(), flag); |
| if (m_pCryptoHandler && m_bNewCrypto) { |
| delete m_pCryptoHandler; |
| } |
| m_pCryptoHandler = new CPDF_StandardCryptoHandler; |
| m_pCryptoHandler->Init(m_pEncryptDict, &handler); |
| m_bNewCrypto = TRUE; |
| m_bSecurityChanged = TRUE; |
| } |
| } |
| } |
| FX_INT32 CPDF_Creator::Continue(IFX_Pause *pPause) |
| { |
| if (m_iStage < 0) { |
| return m_iStage; |
| } |
| FX_INT32 iRet = 0; |
| while (m_iStage < 100) { |
| if (m_iStage < 20) { |
| iRet = WriteDoc_Stage1(pPause); |
| } else if (m_iStage < 30) { |
| iRet = WriteDoc_Stage2(pPause); |
| } else if (m_iStage < 90) { |
| iRet = WriteDoc_Stage3(pPause); |
| } else { |
| iRet = WriteDoc_Stage4(pPause); |
| } |
| if (iRet < m_iStage) { |
| break; |
| } |
| } |
| if (iRet < 1 || m_iStage == 100) { |
| m_iStage = -1; |
| Clear(); |
| return iRet > 99 ? 0 : (iRet < 1 ? -1 : iRet); |
| } |
| return m_iStage; |
| } |
| FX_BOOL CPDF_Creator::SetFileVersion(FX_INT32 fileVersion ) |
| { |
| if (fileVersion < 10 || fileVersion > 17) { |
| return FALSE; |
| } |
| m_FileVersion = fileVersion; |
| return TRUE; |
| } |
| void CPDF_Creator::RemoveSecurity() |
| { |
| ResetStandardSecurity(); |
| m_bSecurityChanged = TRUE; |
| m_pEncryptDict = NULL; |
| m_pCryptoHandler = NULL; |
| } |
| void CPDF_Creator::ResetStandardSecurity() |
| { |
| if ((m_bStandardSecurity || m_bNewCrypto) && m_pCryptoHandler) { |
| delete m_pCryptoHandler; |
| m_pCryptoHandler = NULL; |
| } |
| m_bNewCrypto = FALSE; |
| if (!m_bStandardSecurity) { |
| return; |
| } |
| if (m_pEncryptDict) { |
| m_pEncryptDict->Release(); |
| m_pEncryptDict = NULL; |
| } |
| m_bStandardSecurity = FALSE; |
| } |
