From 241543581696e996093bf0c2ae09ece6afe13ba2 Mon Sep 17 00:00:00 2001 From: dsinclair Date: Tue, 4 Oct 2016 11:01:48 -0700 Subject: Move core/fpdfapi/fpdf_edit to core/fpdfapi/edit BUG=pdfium:603 Review-Url: https://codereview.chromium.org/2386263003 --- core/fpdfapi/fpdf_edit/fpdf_edit_create.cpp | 2022 --------------------------- 1 file changed, 2022 deletions(-) delete mode 100644 core/fpdfapi/fpdf_edit/fpdf_edit_create.cpp (limited to 'core/fpdfapi/fpdf_edit/fpdf_edit_create.cpp') diff --git a/core/fpdfapi/fpdf_edit/fpdf_edit_create.cpp b/core/fpdfapi/fpdf_edit/fpdf_edit_create.cpp deleted file mode 100644 index 1eb4286aa1..0000000000 --- a/core/fpdfapi/fpdf_edit/fpdf_edit_create.cpp +++ /dev/null @@ -1,2022 +0,0 @@ -// 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 "core/fpdfapi/fpdf_edit/editint.h" - -#include - -#include "core/fpdfapi/fpdf_edit/cpdf_creator.h" -#include "core/fpdfapi/fpdf_parser/cpdf_array.h" -#include "core/fpdfapi/fpdf_parser/cpdf_crypto_handler.h" -#include "core/fpdfapi/fpdf_parser/cpdf_dictionary.h" -#include "core/fpdfapi/fpdf_parser/cpdf_document.h" -#include "core/fpdfapi/fpdf_parser/cpdf_parser.h" -#include "core/fpdfapi/fpdf_parser/cpdf_reference.h" -#include "core/fpdfapi/fpdf_parser/cpdf_security_handler.h" -#include "core/fpdfapi/fpdf_parser/cpdf_stream.h" -#include "core/fpdfapi/fpdf_parser/cpdf_stream_acc.h" -#include "core/fpdfapi/fpdf_parser/cpdf_string.h" -#include "core/fpdfapi/fpdf_parser/fpdf_parser_decode.h" -#include "core/fxcrt/fx_ext.h" -#include "third_party/base/stl_util.h" - -#define PDF_OBJECTSTREAM_MAXLENGTH (256 * 1024) -#define PDF_XREFSTREAM_MAXSIZE 10000 - -// TODO(ochang): Make helper for appending "objnum 0 R ". - -namespace { - -int32_t PDF_CreatorAppendObject(const CPDF_Object* pObj, - CFX_FileBufferArchive* pFile, - FX_FILESIZE& offset) { - int32_t len = 0; - if (!pObj) { - if (pFile->AppendString(" null") < 0) { - return -1; - } - offset += 5; - return 1; - } - switch (pObj->GetType()) { - case CPDF_Object::NULLOBJ: - if (pFile->AppendString(" null") < 0) { - return -1; - } - offset += 5; - break; - case CPDF_Object::BOOLEAN: - case CPDF_Object::NUMBER: - if (pFile->AppendString(" ") < 0) { - return -1; - } - if ((len = pFile->AppendString(pObj->GetString().AsStringC())) < 0) { - return -1; - } - offset += len + 1; - break; - case CPDF_Object::STRING: { - CFX_ByteString str = pObj->GetString(); - FX_BOOL bHex = pObj->AsString()->IsHex(); - if ((len = pFile->AppendString(PDF_EncodeString(str, bHex).AsStringC())) < - 0) { - return -1; - } - offset += len; - break; - } - case CPDF_Object::NAME: { - if (pFile->AppendString("/") < 0) { - return -1; - } - CFX_ByteString str = pObj->GetString(); - if ((len = pFile->AppendString(PDF_NameEncode(str).AsStringC())) < 0) { - return -1; - } - offset += len + 1; - break; - } - case CPDF_Object::REFERENCE: { - if (pFile->AppendString(" ") < 0) - return -1; - if ((len = pFile->AppendDWord(pObj->AsReference()->GetRefObjNum())) < 0) - return -1; - if (pFile->AppendString(" 0 R ") < 0) - return -1; - offset += len + 6; - break; - } - case CPDF_Object::ARRAY: { - if (pFile->AppendString("[") < 0) { - return -1; - } - offset += 1; - const CPDF_Array* p = pObj->AsArray(); - for (size_t i = 0; i < p->GetCount(); i++) { - CPDF_Object* pElement = p->GetObjectAt(i); - if (pElement->GetObjNum()) { - if (pFile->AppendString(" ") < 0) { - return -1; - } - if ((len = pFile->AppendDWord(pElement->GetObjNum())) < 0) { - return -1; - } - if (pFile->AppendString(" 0 R") < 0) { - return -1; - } - offset += len + 5; - } else { - if (PDF_CreatorAppendObject(pElement, pFile, offset) < 0) { - return -1; - } - } - } - if (pFile->AppendString("]") < 0) { - return -1; - } - offset += 1; - break; - } - case CPDF_Object::DICTIONARY: { - if (pFile->AppendString("<<") < 0) { - return -1; - } - offset += 2; - const CPDF_Dictionary* p = pObj->AsDictionary(); - for (const auto& it : *p) { - const CFX_ByteString& key = it.first; - CPDF_Object* pValue = it.second; - if (pFile->AppendString("/") < 0) { - return -1; - } - if ((len = pFile->AppendString(PDF_NameEncode(key).AsStringC())) < 0) { - return -1; - } - offset += len + 1; - if (pValue->GetObjNum()) { - if (pFile->AppendString(" ") < 0) { - return -1; - } - if ((len = pFile->AppendDWord(pValue->GetObjNum())) < 0) { - return -1; - } - if (pFile->AppendString(" 0 R") < 0) { - return -1; - } - offset += len + 5; - } else { - if (PDF_CreatorAppendObject(pValue, pFile, offset) < 0) { - return -1; - } - } - } - if (pFile->AppendString(">>") < 0) { - return -1; - } - offset += 2; - break; - } - case CPDF_Object::STREAM: { - const CPDF_Stream* p = pObj->AsStream(); - if (PDF_CreatorAppendObject(p->GetDict(), pFile, offset) < 0) { - return -1; - } - if (pFile->AppendString("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("\r\nendstream")) < 0) { - return -1; - } - offset += len; - break; - } - default: - ASSERT(FALSE); - break; - } - return 1; -} - -int32_t PDF_CreatorWriteTrailer(CPDF_Document* pDocument, - CFX_FileBufferArchive* pFile, - CPDF_Array* pIDArray) { - FX_FILESIZE offset = 0; - int32_t len = 0; - CPDF_Parser* pParser = pDocument->GetParser(); - if (pParser) { - CPDF_Dictionary* p = pParser->GetTrailer(); - for (const auto& it : *p) { - const CFX_ByteString& key = it.first; - CPDF_Object* pValue = it.second; - if (key == "Encrypt" || key == "Size" || key == "Filter" || - key == "Index" || key == "Length" || key == "Prev" || key == "W" || - key == "XRefStm" || key == "Type" || key == "ID") { - continue; - } - if (key == "DecodeParms") - continue; - - if (pFile->AppendString(("/")) < 0) { - return -1; - } - if ((len = pFile->AppendString(PDF_NameEncode(key).AsStringC())) < 0) { - return -1; - } - offset += len + 1; - if (pValue->GetObjNum()) { - if (pFile->AppendString(" ") < 0) { - return -1; - } - if ((len = pFile->AppendDWord(pValue->GetObjNum())) < 0) { - return -1; - } - if (pFile->AppendString(" 0 R ") < 0) { - return -1; - } - offset += len + 6; - } else { - if (PDF_CreatorAppendObject(pValue, pFile, offset) < 0) { - return -1; - } - } - } - if (pIDArray) { - if (pFile->AppendString(("/ID")) < 0) { - return -1; - } - offset += 3; - if (PDF_CreatorAppendObject(pIDArray, pFile, offset) < 0) { - return -1; - } - } - return offset; - } - if (pFile->AppendString("\r\n/Root ") < 0) { - return -1; - } - if ((len = pFile->AppendDWord(pDocument->GetRoot()->GetObjNum())) < 0) { - return -1; - } - if (pFile->AppendString(" 0 R\r\n") < 0) { - return -1; - } - offset += len + 14; - if (pDocument->GetInfo()) { - if (pFile->AppendString("/Info ") < 0) { - return -1; - } - if ((len = pFile->AppendDWord(pDocument->GetInfo()->GetObjNum())) < 0) { - return -1; - } - if (pFile->AppendString(" 0 R\r\n") < 0) { - return -1; - } - offset += len + 12; - } - if (pIDArray) { - if (pFile->AppendString(("/ID")) < 0) { - return -1; - } - offset += 3; - if (PDF_CreatorAppendObject(pIDArray, pFile, offset) < 0) { - return -1; - } - } - return offset; -} - -int32_t PDF_CreatorWriteEncrypt(const CPDF_Dictionary* pEncryptDict, - uint32_t dwObjNum, - CFX_FileBufferArchive* pFile) { - if (!pEncryptDict) { - return 0; - } - ASSERT(pFile); - FX_FILESIZE offset = 0; - int32_t len = 0; - if (pFile->AppendString("/Encrypt") < 0) { - return -1; - } - offset += 8; - if (pFile->AppendString(" ") < 0) { - return -1; - } - if ((len = pFile->AppendDWord(dwObjNum)) < 0) { - return -1; - } - if (pFile->AppendString(" 0 R ") < 0) { - return -1; - } - offset += len + 6; - return offset; -} - -std::vector PDF_GenerateFileID(uint32_t dwSeed1, uint32_t dwSeed2) { - std::vector buffer(sizeof(uint32_t) * 4); - uint32_t* pBuffer = reinterpret_cast(buffer.data()); - void* pContext = FX_Random_MT_Start(dwSeed1); - for (int i = 0; i < 2; ++i) - *pBuffer++ = FX_Random_MT_Generate(pContext); - FX_Random_MT_Close(pContext); - pContext = FX_Random_MT_Start(dwSeed2); - for (int i = 0; i < 2; ++i) - *pBuffer++ = FX_Random_MT_Generate(pContext); - FX_Random_MT_Close(pContext); - return buffer; -} - -void AppendIndex0(CFX_ByteTextBuf& buffer, bool bFirstObject) { - buffer.AppendByte(0); - buffer.AppendByte(0); - buffer.AppendByte(0); - buffer.AppendByte(0); - buffer.AppendByte(0); - const uint8_t byte = bFirstObject ? 0xFF : 0; - buffer.AppendByte(byte); - buffer.AppendByte(byte); -} - -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); -} - -void AppendIndex2(CFX_ByteTextBuf& buffer, uint32_t objnum, int32_t 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)); -} - -bool IsXRefNeedEnd(CPDF_XRefStream* pXRef, uint32_t flag) { - if (!(flag & FPDFCREATE_INCREMENTAL)) - return false; - - uint32_t iCount = 0; - for (const auto& pair : pXRef->m_IndexArray) - iCount += pair.count; - - return iCount >= PDF_XREFSTREAM_MAXSIZE; -} - -int32_t OutputIndex(CFX_FileBufferArchive* pFile, FX_FILESIZE offset) { - 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; -} - -class CPDF_FlateEncoder { - public: - CPDF_FlateEncoder(CPDF_Stream* pStream, FX_BOOL bFlateEncode); - CPDF_FlateEncoder(const uint8_t* pBuffer, - uint32_t size, - bool bFlateEncode, - bool bXRefStream); - ~CPDF_FlateEncoder(); - - void CloneDict(); - - uint8_t* m_pData; - uint32_t m_dwSize; - CPDF_Dictionary* m_pDict; - FX_BOOL m_bCloned; - FX_BOOL m_bNewData; - CPDF_StreamAcc m_Acc; -}; - -void CPDF_FlateEncoder::CloneDict() { - if (!m_bCloned) { - m_pDict = ToDictionary(m_pDict->Clone()); - ASSERT(m_pDict); - m_bCloned = TRUE; - } -} - -CPDF_FlateEncoder::CPDF_FlateEncoder(CPDF_Stream* pStream, FX_BOOL bFlateEncode) - : m_pData(nullptr), - m_dwSize(0), - m_pDict(nullptr), - m_bCloned(FALSE), - m_bNewData(FALSE) { - 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 = (uint8_t*)destAcc.DetachData(); - m_pDict = ToDictionary(pStream->GetDict()->Clone()); - m_pDict->RemoveFor("Filter"); - m_bNewData = TRUE; - m_bCloned = TRUE; - } else { - m_pData = (uint8_t*)m_Acc.GetData(); - m_dwSize = m_Acc.GetSize(); - m_pDict = pStream->GetDict(); - } - return; - } - - m_bNewData = TRUE; - m_bCloned = TRUE; - // TODO(thestig): Move to Init() and check return value. - ::FlateEncode(m_Acc.GetData(), m_Acc.GetSize(), &m_pData, &m_dwSize); - m_pDict = ToDictionary(pStream->GetDict()->Clone()); - m_pDict->SetIntegerFor("Length", m_dwSize); - m_pDict->SetNameFor("Filter", "FlateDecode"); - m_pDict->RemoveFor("DecodeParms"); -} - -CPDF_FlateEncoder::CPDF_FlateEncoder(const uint8_t* pBuffer, - uint32_t size, - bool bFlateEncode, - bool bXRefStream) - : m_pData(nullptr), - m_dwSize(0), - m_pDict(nullptr), - m_bCloned(FALSE), - m_bNewData(FALSE) { - if (!bFlateEncode) { - m_pData = (uint8_t*)pBuffer; - m_dwSize = size; - return; - } - m_bNewData = TRUE; - // TODO(thestig): Move to Init() and check return value. - if (bXRefStream) - ::PngEncode(pBuffer, size, &m_pData, &m_dwSize); - else - ::FlateEncode(pBuffer, size, &m_pData, &m_dwSize); -} - -CPDF_FlateEncoder::~CPDF_FlateEncoder() { - if (m_bCloned && m_pDict) - m_pDict->Release(); - if (m_bNewData) - FX_Free(m_pData); -} - -class CPDF_Encryptor { - public: - CPDF_Encryptor(CPDF_CryptoHandler* pHandler, - int objnum, - uint8_t* src_data, - uint32_t src_size); - ~CPDF_Encryptor(); - - uint8_t* m_pData; - uint32_t m_dwSize; - FX_BOOL m_bNewBuf; -}; - -CPDF_Encryptor::CPDF_Encryptor(CPDF_CryptoHandler* pHandler, - int objnum, - uint8_t* src_data, - uint32_t src_size) - : m_pData(nullptr), m_dwSize(0), m_bNewBuf(FALSE) { - if (src_size == 0) - return; - - if (!pHandler) { - m_pData = (uint8_t*)src_data; - m_dwSize = src_size; - return; - } - m_dwSize = pHandler->EncryptGetSize(objnum, 0, src_data, src_size); - m_pData = FX_Alloc(uint8_t, m_dwSize); - pHandler->EncryptContent(objnum, 0, src_data, src_size, m_pData, m_dwSize); - m_bNewBuf = TRUE; -} - -CPDF_Encryptor::~CPDF_Encryptor() { - if (m_bNewBuf) - FX_Free(m_pData); -} - -} // namespace - -CPDF_ObjectStream::CPDF_ObjectStream() : m_dwObjNum(0), m_index(0) {} - -CPDF_ObjectStream::~CPDF_ObjectStream() {} - -void CPDF_ObjectStream::Start() { - m_Items.clear(); - m_Buffer.Clear(); - m_dwObjNum = 0; - m_index = 0; -} - -void CPDF_ObjectStream::CompressIndirectObject(uint32_t dwObjNum, - const CPDF_Object* pObj) { - m_Items.push_back({dwObjNum, m_Buffer.GetLength()}); - m_Buffer << pObj; -} - -void CPDF_ObjectStream::CompressIndirectObject(uint32_t dwObjNum, - const uint8_t* pBuffer, - uint32_t dwSize) { - m_Items.push_back({dwObjNum, m_Buffer.GetLength()}); - m_Buffer.AppendBlock(pBuffer, dwSize); -} - -FX_FILESIZE CPDF_ObjectStream::End(CPDF_Creator* pCreator) { - ASSERT(pCreator); - if (m_Items.empty()) - return 0; - - CFX_FileBufferArchive* pFile = &pCreator->m_File; - FX_FILESIZE ObjOffset = pCreator->m_Offset; - if (!m_dwObjNum) { - m_dwObjNum = ++pCreator->m_dwLastObjNum; - } - CFX_ByteTextBuf tempBuffer; - for (const auto& pair : m_Items) - tempBuffer << pair.objnum << " " << pair.offset << " "; - - FX_FILESIZE& offset = pCreator->m_Offset; - int32_t len = pFile->AppendDWord(m_dwObjNum); - if (len < 0) { - return -1; - } - offset += len; - if ((len = pFile->AppendString(" 0 obj\r\n<(m_Items); - if ((len = pFile->AppendDWord(iCount)) < 0) { - return -1; - } - offset += len; - if (pFile->AppendString("/First ") < 0) { - return -1; - } - if ((len = pFile->AppendDWord((uint32_t)tempBuffer.GetLength())) < 0) { - return -1; - } - if (pFile->AppendString("/Length ") < 0) { - return -1; - } - offset += len + 15; - - tempBuffer << m_Buffer; - CPDF_FlateEncoder encoder(tempBuffer.GetBuffer(), tempBuffer.GetLength(), - true, false); - CPDF_Encryptor encryptor(pCreator->m_pCryptoHandler, m_dwObjNum, - encoder.m_pData, encoder.m_dwSize); - if ((len = pFile->AppendDWord(encryptor.m_dwSize)) < 0) { - return -1; - } - offset += len; - if (pFile->AppendString("/Filter /FlateDecode") < 0) { - return -1; - } - offset += 20; - if ((len = pFile->AppendString(">>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("\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) {} - -CPDF_XRefStream::~CPDF_XRefStream() {} - -FX_BOOL CPDF_XRefStream::Start() { - m_IndexArray.clear(); - m_Buffer.Clear(); - m_iSeg = 0; - return TRUE; -} -int32_t CPDF_XRefStream::CompressIndirectObject(uint32_t dwObjNum, - const CPDF_Object* pObj, - CPDF_Creator* pCreator) { - if (!pCreator) - return 0; - - m_ObjStream.CompressIndirectObject(dwObjNum, pObj); - if (pdfium::CollectionSize(m_ObjStream.m_Items) < - pCreator->m_ObjectStreamSize && - m_ObjStream.m_Buffer.GetLength() < PDF_OBJECTSTREAM_MAXLENGTH) { - return 1; - } - return EndObjectStream(pCreator); -} -int32_t CPDF_XRefStream::CompressIndirectObject(uint32_t dwObjNum, - const uint8_t* pBuffer, - uint32_t dwSize, - CPDF_Creator* pCreator) { - if (!pCreator) - return 0; - - m_ObjStream.CompressIndirectObject(dwObjNum, pBuffer, dwSize); - if (pdfium::CollectionSize(m_ObjStream.m_Items) < - pCreator->m_ObjectStreamSize && - m_ObjStream.m_Buffer.GetLength() < PDF_OBJECTSTREAM_MAXLENGTH) { - return 1; - } - return EndObjectStream(pCreator); -} - -int32_t 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; - } - } - uint32_t& dwObjStmNum = m_ObjStream.m_dwObjNum; - if (!dwObjStmNum) { - dwObjStmNum = ++pCreator->m_dwLastObjNum; - } - int32_t iSize = pdfium::CollectionSize(m_ObjStream.m_Items); - size_t iSeg = m_IndexArray.size(); - if (!(pCreator->m_dwFlags & FPDFCREATE_INCREMENTAL)) { - if (m_dwTempObjNum == 0) { - AppendIndex0(m_Buffer, true); - m_dwTempObjNum++; - } - uint32_t end_num = m_IndexArray.back().objnum + m_IndexArray.back().count; - 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_Items[index].objnum) { - 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_ObjectOffset[dwObjStmNum] = objOffset; - } - m_iSeg = iSeg; - if (bEOF) { - m_ObjStream.Start(); - } - return 1; - } - for (auto it = m_IndexArray.begin() + m_iSeg; it != m_IndexArray.end(); - ++it) { - for (uint32_t m = it->objnum; m < it->objnum + it->count; ++m) { - if (m_ObjStream.m_index >= iSize || - m != m_ObjStream.m_Items[it - m_IndexArray.begin()].objnum) { - AppendIndex1(m_Buffer, pCreator->m_ObjectOffset[m]); - } else { - AppendIndex2(m_Buffer, dwObjStmNum, m_ObjStream.m_index++); - } - } - } - if (iSize > 0 && bEOF) { - AppendIndex1(m_Buffer, objOffset); - m_IndexArray.push_back({dwObjStmNum, 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; - uint32_t 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; - int32_t len = pFile->AppendDWord(objnum); - if (len < 0) { - return FALSE; - } - offset += len; - if ((len = pFile->AppendString(" 0 obj\r\n<AppendDWord(0)) < 0) { - return FALSE; - } - if ((len = pFile->AppendString(" ")) < 0) { - return FALSE; - } - offset += len + 1; - if ((len = pFile->AppendDWord(objnum + 1)) < 0) { - return FALSE; - } - offset += len; - } else { - for (const auto& pair : m_IndexArray) { - if ((len = pFile->AppendDWord(pair.objnum)) < 0) { - return FALSE; - } - if (pFile->AppendString(" ") < 0) { - return FALSE; - } - offset += len + 1; - if ((len = pFile->AppendDWord(pair.count)) < 0) { - return FALSE; - } - if (pFile->AppendString(" ") < 0) { - return FALSE; - } - offset += len + 1; - } - } - if (pFile->AppendString("]/Size ") < 0) { - return FALSE; - } - if ((len = pFile->AppendDWord(objnum + 1)) < 0) { - return FALSE; - } - offset += len + 7; - if (m_PrevOffset > 0) { - if (pFile->AppendString("/Prev ") < 0) { - return FALSE; - } - FX_CHAR offset_buf[20]; - FXSYS_memset(offset_buf, 0, sizeof(offset_buf)); - FXSYS_i64toa(m_PrevOffset, offset_buf, 10); - int32_t offset_len = (int32_t)FXSYS_strlen(offset_buf); - if (pFile->AppendBlock(offset_buf, offset_len) < 0) { - return FALSE; - } - offset += offset_len + 6; - } - CPDF_FlateEncoder encoder(m_Buffer.GetBuffer(), m_Buffer.GetLength(), TRUE, - TRUE); - if (pFile->AppendString("/Filter /FlateDecode") < 0) - return FALSE; - - offset += 20; - if ((len = pFile->AppendString("/DecodeParms<>")) < - 0) { - return FALSE; - } - - offset += len; - if (pFile->AppendString("/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.get())) < 0) { - return FALSE; - } - offset += len; - if (pCreator->m_pEncryptDict) { - uint32_t dwEncryptObjNum = pCreator->m_pEncryptDict->GetObjNum(); - if (dwEncryptObjNum == 0) { - dwEncryptObjNum = pCreator->m_dwEncryptObjNum; - } - if ((len = PDF_CreatorWriteEncrypt(pCreator->m_pEncryptDict, - dwEncryptObjNum, pFile)) < 0) { - return FALSE; - } - offset += len; - } - } - if ((len = pFile->AppendString(">>stream\r\n")) < 0) { - return FALSE; - } - offset += len; - if (pFile->AppendBlock(encoder.m_pData, encoder.m_dwSize) < 0) { - return FALSE; - } - if ((len = pFile->AppendString("\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, true); - for (uint32_t 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 { - for (const auto& pair : m_IndexArray) { - for (uint32_t j = pair.objnum; j < pair.objnum + pair.count; ++j) - AppendIndex1(m_Buffer, pCreator->m_ObjectOffset[j]); - } - } - return GenerateXRefStream(pCreator, FALSE); -} -void CPDF_XRefStream::AddObjectNumberToIndexArray(uint32_t objnum) { - if (m_IndexArray.empty()) { - m_IndexArray.push_back({objnum, 1}); - return; - } - uint32_t next_objnum = m_IndexArray.back().objnum + m_IndexArray.back().count; - if (objnum == next_objnum) - m_IndexArray.back().count += 1; - else - m_IndexArray.push_back({objnum, 1}); -} - -CPDF_Creator::CPDF_Creator(CPDF_Document* pDoc) - : m_pDocument(pDoc), - m_pParser(pDoc->GetParser()), - m_bSecurityChanged(FALSE), - m_pEncryptDict(m_pParser ? m_pParser->GetEncryptDict() : nullptr), - m_dwEncryptObjNum(0), - m_bEncryptCloned(FALSE), - m_pCryptoHandler(m_pParser ? m_pParser->GetCryptoHandler() : nullptr), - m_bLocalCryptoHandler(FALSE), - m_pMetadata(nullptr), - m_ObjectStreamSize(200), - m_dwLastObjNum(m_pDocument->GetLastObjNum()), - m_Offset(0), - m_iStage(-1), - m_dwFlags(0), - m_Pos(nullptr), - m_XrefStart(0), - m_pIDArray(nullptr), - m_FileVersion(0) {} - -CPDF_Creator::~CPDF_Creator() { - ResetStandardSecurity(); - if (m_bEncryptCloned && m_pEncryptDict) { - m_pEncryptDict->Release(); - m_pEncryptDict = nullptr; - } - Clear(); -} - -int32_t CPDF_Creator::WriteIndirectObjectToStream(const CPDF_Object* pObj) { - if (!m_pXRefStream) - return 1; - - uint32_t objnum = pObj->GetObjNum(); - if (m_pParser && m_pParser->GetObjectGenNum(objnum) > 0) - return 1; - - if (pObj->IsNumber()) - return 1; - - CPDF_Dictionary* pDict = pObj->GetDict(); - if (pObj->IsStream()) { - if (pDict && pDict->GetStringFor("Type") == "XRef") - return 0; - return 1; - } - - if (pDict) { - if (pDict == m_pDocument->GetRoot() || pDict == m_pEncryptDict) - return 1; - if (pDict->IsSignatureDict()) - return 1; - if (pDict->GetStringFor("Type") == "Page") - return 1; - } - - m_pXRefStream->AddObjectNumberToIndexArray(objnum); - if (m_pXRefStream->CompressIndirectObject(objnum, pObj, this) < 0) - return -1; - if (!IsXRefNeedEnd(m_pXRefStream.get(), m_dwFlags)) - return 0; - if (!m_pXRefStream->End(this)) - return -1; - if (!m_pXRefStream->Start()) - return -1; - return 0; -} -int32_t CPDF_Creator::WriteIndirectObjectToStream(uint32_t objnum, - const uint8_t* pBuffer, - uint32_t dwSize) { - if (!m_pXRefStream) { - return 1; - } - m_pXRefStream->AddObjectNumberToIndexArray(objnum); - int32_t iRet = - m_pXRefStream->CompressIndirectObject(objnum, pBuffer, dwSize, this); - if (iRet < 1) { - return iRet; - } - if (!IsXRefNeedEnd(m_pXRefStream.get(), m_dwFlags)) { - return 0; - } - if (!m_pXRefStream->End(this)) { - return -1; - } - if (!m_pXRefStream->Start()) { - return -1; - } - return 0; -} -int32_t CPDF_Creator::AppendObjectNumberToXRef(uint32_t objnum) { - if (!m_pXRefStream) { - return 1; - } - m_pXRefStream->AddObjectNumberToIndexArray(objnum); - if (!IsXRefNeedEnd(m_pXRefStream.get(), m_dwFlags)) { - return 0; - } - if (!m_pXRefStream->End(this)) { - return -1; - } - if (!m_pXRefStream->Start()) { - return -1; - } - return 0; -} -int32_t CPDF_Creator::WriteStream(const CPDF_Object* pStream, - uint32_t objnum, - CPDF_CryptoHandler* pCrypto) { - CPDF_FlateEncoder encoder(const_cast(pStream->AsStream()), - pStream != m_pMetadata); - CPDF_Encryptor encryptor(pCrypto, objnum, encoder.m_pData, encoder.m_dwSize); - if ((uint32_t)encoder.m_pDict->GetIntegerFor("Length") != - encryptor.m_dwSize) { - encoder.CloneDict(); - encoder.m_pDict->SetIntegerFor("Length", encryptor.m_dwSize); - } - if (WriteDirectObj(objnum, encoder.m_pDict) < 0) { - return -1; - } - int len = m_File.AppendString("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("\r\nendstream")) < 0) { - return -1; - } - m_Offset += len; - return 1; -} -int32_t CPDF_Creator::WriteIndirectObj(uint32_t objnum, - const CPDF_Object* pObj) { - int32_t len = m_File.AppendDWord(objnum); - if (len < 0) - return -1; - - m_Offset += len; - if ((len = m_File.AppendString(" 0 obj\r\n")) < 0) - return -1; - - m_Offset += len; - if (pObj->IsStream()) { - CPDF_CryptoHandler* pHandler = - pObj != m_pMetadata ? m_pCryptoHandler : nullptr; - if (WriteStream(pObj, objnum, pHandler) < 0) - return -1; - } else { - if (WriteDirectObj(objnum, pObj) < 0) - return -1; - } - if ((len = m_File.AppendString("\r\nendobj\r\n")) < 0) - return -1; - - m_Offset += len; - if (AppendObjectNumberToXRef(objnum) < 0) - return -1; - return 0; -} -int32_t CPDF_Creator::WriteIndirectObj(const CPDF_Object* pObj) { - int32_t iRet = WriteIndirectObjectToStream(pObj); - if (iRet < 1) { - return iRet; - } - return WriteIndirectObj(pObj->GetObjNum(), pObj); -} -int32_t CPDF_Creator::WriteDirectObj(uint32_t objnum, - const CPDF_Object* pObj, - FX_BOOL bEncrypt) { - int32_t len = 0; - if (!pObj) { - if (m_File.AppendString(" null") < 0) { - return -1; - } - m_Offset += 5; - return 1; - } - switch (pObj->GetType()) { - case CPDF_Object::NULLOBJ: - if (m_File.AppendString(" null") < 0) { - return -1; - } - m_Offset += 5; - break; - case CPDF_Object::BOOLEAN: - case CPDF_Object::NUMBER: - if (m_File.AppendString(" ") < 0) { - return -1; - } - if ((len = m_File.AppendString(pObj->GetString().AsStringC())) < 0) { - return -1; - } - m_Offset += len + 1; - break; - case CPDF_Object::STRING: { - CFX_ByteString str = pObj->GetString(); - FX_BOOL bHex = pObj->AsString()->IsHex(); - if (!m_pCryptoHandler || !bEncrypt) { - CFX_ByteString content = PDF_EncodeString(str, bHex); - if ((len = m_File.AppendString(content.AsStringC())) < 0) { - return -1; - } - m_Offset += len; - break; - } - CPDF_Encryptor encryptor(m_pCryptoHandler, objnum, (uint8_t*)str.c_str(), - str.GetLength()); - CFX_ByteString content = PDF_EncodeString( - CFX_ByteString((const FX_CHAR*)encryptor.m_pData, encryptor.m_dwSize), - bHex); - if ((len = m_File.AppendString(content.AsStringC())) < 0) { - return -1; - } - m_Offset += len; - break; - } - case CPDF_Object::STREAM: { - CPDF_FlateEncoder encoder(const_cast(pObj->AsStream()), - TRUE); - CPDF_Encryptor encryptor(m_pCryptoHandler, objnum, encoder.m_pData, - encoder.m_dwSize); - if ((uint32_t)encoder.m_pDict->GetIntegerFor("Length") != - encryptor.m_dwSize) { - encoder.CloneDict(); - encoder.m_pDict->SetIntegerFor("Length", encryptor.m_dwSize); - } - if (WriteDirectObj(objnum, encoder.m_pDict) < 0) { - return -1; - } - if ((len = m_File.AppendString("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("\r\nendstream")) < 0) { - return -1; - } - m_Offset += len; - break; - } - case CPDF_Object::NAME: { - if (m_File.AppendString("/") < 0) { - return -1; - } - CFX_ByteString str = pObj->GetString(); - if ((len = m_File.AppendString(PDF_NameEncode(str).AsStringC())) < 0) { - return -1; - } - m_Offset += len + 1; - break; - } - case CPDF_Object::REFERENCE: { - if (m_File.AppendString(" ") < 0) - return -1; - if ((len = m_File.AppendDWord(pObj->AsReference()->GetRefObjNum())) < 0) - return -1; - if (m_File.AppendString(" 0 R") < 0) - return -1; - m_Offset += len + 5; - break; - } - case CPDF_Object::ARRAY: { - if (m_File.AppendString("[") < 0) { - return -1; - } - m_Offset += 1; - const CPDF_Array* p = pObj->AsArray(); - for (size_t i = 0; i < p->GetCount(); i++) { - CPDF_Object* pElement = p->GetObjectAt(i); - if (pElement->GetObjNum()) { - if (m_File.AppendString(" ") < 0) { - return -1; - } - if ((len = m_File.AppendDWord(pElement->GetObjNum())) < 0) { - return -1; - } - if (m_File.AppendString(" 0 R") < 0) { - return -1; - } - m_Offset += len + 5; - } else { - if (WriteDirectObj(objnum, pElement) < 0) { - return -1; - } - } - } - if (m_File.AppendString("]") < 0) { - return -1; - } - m_Offset += 1; - break; - } - case CPDF_Object::DICTIONARY: { - if (!m_pCryptoHandler || pObj == m_pEncryptDict) - return PDF_CreatorAppendObject(pObj, &m_File, m_Offset); - if (m_File.AppendString("<<") < 0) - return -1; - - m_Offset += 2; - const CPDF_Dictionary* p = pObj->AsDictionary(); - bool bSignDict = p->IsSignatureDict(); - for (const auto& it : *p) { - FX_BOOL bSignValue = FALSE; - const CFX_ByteString& key = it.first; - CPDF_Object* pValue = it.second; - if (m_File.AppendString("/") < 0) { - return -1; - } - if ((len = m_File.AppendString(PDF_NameEncode(key).AsStringC())) < 0) { - return -1; - } - m_Offset += len + 1; - if (bSignDict && key == "Contents") { - bSignValue = TRUE; - } - if (pValue->GetObjNum()) { - if (m_File.AppendString(" ") < 0) { - return -1; - } - if ((len = m_File.AppendDWord(pValue->GetObjNum())) < 0) { - return -1; - } - if (m_File.AppendString(" 0 R ") < 0) { - return -1; - } - m_Offset += len + 6; - } else { - if (WriteDirectObj(objnum, pValue, !bSignValue) < 0) { - return -1; - } - } - } - if (m_File.AppendString(">>") < 0) { - return -1; - } - m_Offset += 2; - break; - } - } - return 1; -} -int32_t CPDF_Creator::WriteOldIndirectObject(uint32_t objnum) { - if (m_pParser->IsObjectFreeOrNull(objnum)) - return 0; - - m_ObjectOffset[objnum] = m_Offset; - FX_BOOL bExistInMap = !!m_pDocument->GetIndirectObject(objnum); - const uint8_t object_type = m_pParser->GetObjectType(objnum); - bool bObjStm = (object_type == 2) && m_pEncryptDict && !m_pXRefStream; - if (m_pParser->IsVersionUpdated() || m_bSecurityChanged || bExistInMap || - bObjStm) { - CPDF_Object* pObj = m_pDocument->GetOrParseIndirectObject(objnum); - if (!pObj) { - m_ObjectOffset[objnum] = 0; - return 0; - } - if (WriteIndirectObj(pObj)) { - return -1; - } - if (!bExistInMap) { - m_pDocument->ReleaseIndirectObject(objnum); - } - } else { - uint8_t* pBuffer; - uint32_t size; - m_pParser->GetIndirectBinary(objnum, pBuffer, size); - if (!pBuffer) { - return 0; - } - if (object_type == 2) { - if (m_pXRefStream) { - if (WriteIndirectObjectToStream(objnum, pBuffer, size) < 0) { - FX_Free(pBuffer); - return -1; - } - } else { - int32_t len = m_File.AppendDWord(objnum); - if (len < 0) { - return -1; - } - if (m_File.AppendString(" 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("\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; -} -int32_t CPDF_Creator::WriteOldObjs(IFX_Pause* pPause) { - uint32_t nLastObjNum = m_pParser->GetLastObjNum(); - if (!m_pParser->IsValidObjectNumber(nLastObjNum)) - return 0; - - uint32_t objnum = (uint32_t)(uintptr_t)m_Pos; - for (; objnum <= nLastObjNum; ++objnum) { - int32_t iRet = WriteOldIndirectObject(objnum); - if (iRet < 0) - return iRet; - - if (!iRet) - continue; - - if (pPause && pPause->NeedToPauseNow()) { - m_Pos = (void*)(uintptr_t)(objnum + 1); - return 1; - } - } - return 0; -} -int32_t CPDF_Creator::WriteNewObjs(FX_BOOL bIncremental, IFX_Pause* pPause) { - int32_t iCount = m_NewObjNumArray.GetSize(); - int32_t index = (int32_t)(uintptr_t)m_Pos; - while (index < iCount) { - uint32_t objnum = m_NewObjNumArray.ElementAt(index); - CPDF_Object* pObj = m_pDocument->GetIndirectObject(objnum); - if (!pObj) { - ++index; - continue; - } - m_ObjectOffset[objnum] = m_Offset; - if (WriteIndirectObj(pObj)) - return -1; - - index++; - if (pPause && pPause->NeedToPauseNow()) { - m_Pos = (FX_POSITION)(uintptr_t)index; - return 1; - } - } - return 0; -} -void CPDF_Creator::InitOldObjNumOffsets() { - if (!m_pParser) { - return; - } - uint32_t j = 0; - uint32_t dwStart = 0; - uint32_t dwEnd = m_pParser->GetLastObjNum(); - while (dwStart <= dwEnd) { - while (dwStart <= dwEnd && m_pParser->IsObjectFreeOrNull(dwStart)) - dwStart++; - - if (dwStart > dwEnd) - break; - - j = dwStart; - while (j <= dwEnd && !m_pParser->IsObjectFreeOrNull(j)) - j++; - - m_ObjectOffset.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; - for (const auto& pair : *m_pDocument) { - const uint32_t objnum = pair.first; - const CPDF_Object* pObj = pair.second.get(); - if (bIncremental || pObj->GetObjNum() == CPDF_Object::kInvalidObjNum) - continue; - if (m_pParser && m_pParser->IsValidObjectNumber(objnum) && - m_pParser->GetObjectType(objnum)) { - continue; - } - AppendNewObjNum(objnum); - } - - int32_t iCount = m_NewObjNumArray.GetSize(); - if (iCount == 0) - return; - - int32_t i = 0; - uint32_t 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; - - uint32_t dwLastObjNum = dwStartObjNum; - i++; - bool bNewStart = false; - for (; i < iCount; i++) { - uint32_t dwCurObjNum = m_NewObjNumArray.ElementAt(i); - bool bExist = m_pParser && m_pParser->IsValidObjectNumber(dwCurObjNum) && - m_ObjectOffset.GetPtrAt(dwCurObjNum); - if (bExist || dwCurObjNum - dwLastObjNum > 1) { - if (!bNewStart) - m_ObjectOffset.Add(dwStartObjNum, dwLastObjNum - dwStartObjNum + 1); - dwStartObjNum = dwCurObjNum; - } - if (bNewStart) - dwStartObjNum = dwCurObjNum; - - bNewStart = bExist; - dwLastObjNum = dwCurObjNum; - } - m_ObjectOffset.Add(dwStartObjNum, dwLastObjNum - dwStartObjNum + 1); -} - -void CPDF_Creator::AppendNewObjNum(uint32_t objbum) { - int32_t iStart = 0, iFind = 0; - int32_t iEnd = m_NewObjNumArray.GetUpperBound(); - while (iStart <= iEnd) { - int32_t iMid = (iStart + iEnd) / 2; - uint32_t dwMid = m_NewObjNumArray.ElementAt(iMid); - if (objbum < dwMid) { - iEnd = iMid - 1; - } else { - if (iMid == iEnd) { - iFind = iMid + 1; - break; - } - uint32_t dwNext = m_NewObjNumArray.ElementAt(iMid + 1); - if (objbum < dwNext) { - iFind = iMid + 1; - break; - } - iStart = iMid + 1; - } - } - m_NewObjNumArray.InsertAt(iFind, objbum); -} -int32_t CPDF_Creator::WriteDoc_Stage1(IFX_Pause* pPause) { - ASSERT(m_iStage > -1 || m_iStage < 20); - if (m_iStage == 0) { - if (!m_pParser) { - 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->GetDirectObjectFor("Metadata") : nullptr; - if (m_dwFlags & FPDFCREATE_OBJECTSTREAM) { - m_pXRefStream.reset(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("%PDF-1.") < 0) { - return -1; - } - m_Offset += 7; - int32_t version = 7; - if (m_FileVersion) { - version = m_FileVersion; - } else if (m_pParser) { - version = m_pParser->GetFileVersion(); - } - int32_t len = m_File.AppendDWord(version % 10); - if (len < 0) { - return -1; - } - m_Offset += len; - if ((len = m_File.AppendString("\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 = (void*)(uintptr_t)m_Offset; - m_iStage = 15; - } - } - if (m_iStage == 15) { - if ((m_dwFlags & FPDFCREATE_NO_ORIGINAL) == 0 && m_Pos) { - IFX_FileRead* pSrcFile = m_pParser->GetFileAccess(); - uint8_t buffer[4096]; - uint32_t src_size = (uint32_t)(uintptr_t)m_Pos; - while (src_size) { - uint32_t 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 = (void*)(uintptr_t)src_size; - return 1; - } - } - } - if ((m_dwFlags & FPDFCREATE_NO_ORIGINAL) == 0 && - m_pParser->GetLastXRefOffset() == 0) { - InitOldObjNumOffsets(); - uint32_t dwEnd = m_pParser->GetLastObjNum(); - bool bObjStm = (m_dwFlags & FPDFCREATE_OBJECTSTREAM) != 0; - for (uint32_t objnum = 0; objnum <= dwEnd; objnum++) { - if (m_pParser->IsObjectFreeOrNull(objnum)) - continue; - - m_ObjectOffset[objnum] = m_pParser->GetObjectPositionOrZero(objnum); - if (bObjStm) { - m_pXRefStream->AddObjectNumberToIndexArray(objnum); - } - } - if (bObjStm) { - m_pXRefStream->EndXRefStream(this); - m_pXRefStream->Start(); - } - } - m_iStage = 20; - } - InitNewObjNumOffsets(); - return m_iStage; -} -int32_t CPDF_Creator::WriteDoc_Stage2(IFX_Pause* pPause) { - ASSERT(m_iStage >= 20 || m_iStage < 30); - if (m_iStage == 20) { - if ((m_dwFlags & FPDFCREATE_INCREMENTAL) == 0 && m_pParser) { - m_Pos = (void*)(uintptr_t)0; - m_iStage = 21; - } else { - m_iStage = 25; - } - } - if (m_iStage == 21) { - int32_t iRet = WriteOldObjs(pPause); - if (iRet) { - return iRet; - } - m_iStage = 25; - } - if (m_iStage == 25) { - m_Pos = (void*)(uintptr_t)0; - m_iStage = 26; - } - if (m_iStage == 26) { - int32_t iRet = - WriteNewObjs((m_dwFlags & FPDFCREATE_INCREMENTAL) != 0, pPause); - if (iRet) { - return iRet; - } - m_iStage = 27; - } - if (m_iStage == 27) { - if (m_pEncryptDict && !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_dwEncryptObjNum = m_dwLastObjNum; - if (m_dwFlags & FPDFCREATE_INCREMENTAL) { - m_NewObjNumArray.Add(m_dwLastObjNum); - } - } - m_iStage = 80; - } - return m_iStage; -} -int32_t CPDF_Creator::WriteDoc_Stage3(IFX_Pause* pPause) { - ASSERT(m_iStage >= 80 || m_iStage < 90); - uint32_t 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) - ? "xref\r\n" - : "xref\r\n0 1\r\n0000000000 65535 f\r\n"; - if (m_File.AppendString(str.AsStringC()) < 0) { - return -1; - } - m_Pos = (void*)(uintptr_t)1; - m_iStage = 81; - } else { - if (m_File.AppendString("xref\r\n") < 0) { - return -1; - } - m_Pos = (void*)(uintptr_t)0; - m_iStage = 82; - } - } else { - m_iStage = 90; - } - } - if (m_iStage == 81) { - CFX_ByteString str; - uint32_t i = (uint32_t)(uintptr_t)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 65535 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 = (void*)(uintptr_t)i; - return 1; - } - } - m_iStage = 90; - } - if (m_iStage == 82) { - CFX_ByteString str; - int32_t iCount = m_NewObjNumArray.GetSize(); - int32_t i = (int32_t)(uintptr_t)m_Pos; - while (i < iCount) { - int32_t j = i; - uint32_t objnum = m_NewObjNumArray.ElementAt(i); - while (j < iCount) { - if (++j == iCount) { - break; - } - uint32_t 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 65535 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 = (void*)(uintptr_t)i; - return 1; - } - } - m_iStage = 90; - } - return m_iStage; -} - -int32_t CPDF_Creator::WriteDoc_Stage4(IFX_Pause* pPause) { - 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("trailer\r\n<<") < 0) { - return -1; - } - } else { - if (m_File.AppendDWord(m_pDocument->GetLastObjNum() + 1) < 0) { - return -1; - } - if (m_File.AppendString(" 0 obj <<") < 0) { - return -1; - } - } - if (m_pParser) { - CPDF_Dictionary* p = m_pParser->GetTrailer(); - for (const auto& it : *p) { - const CFX_ByteString& key = it.first; - CPDF_Object* pValue = it.second; - // TODO(ochang): Consolidate with similar check in - // PDF_CreatorWriteTrailer. - if (key == "Encrypt" || key == "Size" || key == "Filter" || - key == "Index" || key == "Length" || key == "Prev" || key == "W" || - key == "XRefStm" || key == "ID") { - continue; - } - if (m_File.AppendString(("/")) < 0) { - return -1; - } - if (m_File.AppendString(PDF_NameEncode(key).AsStringC()) < 0) { - return -1; - } - if (pValue->GetObjNum()) { - if (m_File.AppendString(" ") < 0) { - return -1; - } - if (m_File.AppendDWord(pValue->GetObjNum()) < 0) { - return -1; - } - if (m_File.AppendString(" 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("\r\n/Root ") < 0) { - return -1; - } - if (m_File.AppendDWord(m_pDocument->GetRoot()->GetObjNum()) < 0) { - return -1; - } - if (m_File.AppendString(" 0 R\r\n") < 0) { - return -1; - } - if (m_pDocument->GetInfo()) { - if (m_File.AppendString("/Info ") < 0) { - return -1; - } - if (m_File.AppendDWord(m_pDocument->GetInfo()->GetObjNum()) < 0) { - return -1; - } - if (m_File.AppendString(" 0 R\r\n") < 0) { - return -1; - } - } - } - if (m_pEncryptDict) { - if (m_File.AppendString("/Encrypt") < 0) { - return -1; - } - uint32_t dwObjNum = m_pEncryptDict->GetObjNum(); - if (dwObjNum == 0) { - dwObjNum = m_pDocument->GetLastObjNum() + 1; - } - if (m_File.AppendString(" ") < 0) { - return -1; - } - if (m_File.AppendDWord(dwObjNum) < 0) { - return -1; - } - if (m_File.AppendString(" 0 R ") < 0) { - return -1; - } - } - if (m_File.AppendString("/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("/Prev ") < 0) { - return -1; - } - FX_CHAR offset_buf[20]; - FXSYS_memset(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(("/ID")) < 0) { - return -1; - } - FX_FILESIZE offset = 0; - if (PDF_CreatorAppendObject(m_pIDArray.get(), &m_File, offset) < 0) { - return -1; - } - } - if (!bXRefStream) { - if (m_File.AppendString(">>") < 0) { - return -1; - } - } else { - if (m_File.AppendString("/W[0 4 1]/Index[") < 0) { - return -1; - } - if ((m_dwFlags & FPDFCREATE_INCREMENTAL) != 0 && m_pParser && - m_pParser->GetLastXRefOffset() == 0) { - uint32_t 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(" 1 ") < 0) { - return -1; - } - } - if (m_File.AppendString("]/Length ") < 0) { - return -1; - } - if (m_File.AppendDWord(m_dwLastObjNum * 5) < 0) { - return -1; - } - if (m_File.AppendString(">>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(); - int32_t i = 0; - for (i = 0; i < count; i++) { - uint32_t objnum = m_NewObjNumArray.ElementAt(i); - if (m_File.AppendDWord(objnum) < 0) { - return -1; - } - if (m_File.AppendString(" 1 ") < 0) { - return -1; - } - } - if (m_File.AppendString("]/Length ") < 0) { - return -1; - } - if (m_File.AppendDWord(count * 5) < 0) { - return -1; - } - if (m_File.AppendString(">>stream\r\n") < 0) { - return -1; - } - for (i = 0; i < count; i++) { - uint32_t objnum = m_NewObjNumArray.ElementAt(i); - FX_FILESIZE offset = m_ObjectOffset[objnum]; - OutputIndex(&m_File, offset); - } - } - if (m_File.AppendString("\r\nendstream") < 0) { - return -1; - } - } - } - if (m_File.AppendString("\r\nstartxref\r\n") < 0) { - return -1; - } - FX_CHAR offset_buf[20]; - FXSYS_memset(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("\r\n%%EOF\r\n") < 0) { - return -1; - } - m_File.Flush(); - return m_iStage = 100; -} - -void CPDF_Creator::Clear() { - m_pXRefStream.reset(); - m_File.Clear(); - m_NewObjNumArray.RemoveAll(); - m_pIDArray.reset(); -} - -bool CPDF_Creator::Create(IFX_StreamWrite* pFile, uint32_t flags) { - m_File.AttachFile(pFile); - return Create(flags); -} - -bool CPDF_Creator::Create(uint32_t flags) { - m_dwFlags = flags; - m_iStage = 0; - m_Offset = 0; - m_dwLastObjNum = m_pDocument->GetLastObjNum(); - m_ObjectOffset.Clear(); - m_NewObjNumArray.RemoveAll(); - InitID(); - if (flags & FPDFCREATE_PROGRESSIVE) - return true; - return Continue(nullptr) > -1; -} - -void CPDF_Creator::InitID(FX_BOOL bDefault) { - CPDF_Array* pOldIDArray = m_pParser ? m_pParser->GetIDArray() : nullptr; - FX_BOOL bNewId = !m_pIDArray; - if (bNewId) { - m_pIDArray.reset(new CPDF_Array); - CPDF_Object* pID1 = pOldIDArray ? pOldIDArray->GetObjectAt(0) : nullptr; - if (pID1) { - m_pIDArray->Add(pID1->Clone()); - } else { - std::vector buffer = - PDF_GenerateFileID((uint32_t)(uintptr_t) this, m_dwLastObjNum); - CFX_ByteString bsBuffer(buffer.data(), buffer.size()); - m_pIDArray->Add(new CPDF_String(bsBuffer, TRUE)); - } - } - if (!bDefault) { - return; - } - if (pOldIDArray) { - CPDF_Object* pID2 = pOldIDArray->GetObjectAt(1); - if ((m_dwFlags & FPDFCREATE_INCREMENTAL) && m_pEncryptDict && pID2) { - m_pIDArray->Add(pID2->Clone()); - return; - } - std::vector buffer = - PDF_GenerateFileID((uint32_t)(uintptr_t) this, m_dwLastObjNum); - CFX_ByteString bsBuffer(buffer.data(), buffer.size()); - m_pIDArray->Add(new CPDF_String(bsBuffer, TRUE)); - return; - } - m_pIDArray->Add(m_pIDArray->GetObjectAt(0)->Clone()); - if (m_pEncryptDict && !pOldIDArray && m_pParser && bNewId) { - if (m_pEncryptDict->GetStringFor("Filter") == "Standard") { - CFX_ByteString user_pass = m_pParser->GetPassword(); - uint32_t flag = PDF_ENCRYPT_CONTENT; - - CPDF_SecurityHandler handler; - handler.OnCreate(m_pEncryptDict, m_pIDArray.get(), user_pass.raw_str(), - user_pass.GetLength(), flag); - if (m_bLocalCryptoHandler) - delete m_pCryptoHandler; - m_pCryptoHandler = new CPDF_CryptoHandler; - m_pCryptoHandler->Init(m_pEncryptDict, &handler); - m_bLocalCryptoHandler = TRUE; - m_bSecurityChanged = TRUE; - } - } -} -int32_t CPDF_Creator::Continue(IFX_Pause* pPause) { - if (m_iStage < 0) { - return m_iStage; - } - int32_t 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(int32_t fileVersion) { - if (fileVersion < 10 || fileVersion > 17) { - return FALSE; - } - m_FileVersion = fileVersion; - return TRUE; -} -void CPDF_Creator::RemoveSecurity() { - ResetStandardSecurity(); - m_bSecurityChanged = TRUE; - m_pEncryptDict = nullptr; - m_pCryptoHandler = nullptr; -} -void CPDF_Creator::ResetStandardSecurity() { - if (!m_bLocalCryptoHandler) - return; - - delete m_pCryptoHandler; - m_pCryptoHandler = nullptr; - m_bLocalCryptoHandler = FALSE; -} -- cgit v1.2.3