// 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 <vector>
|
|
#include "core/fpdfapi/fpdf_edit/include/cpdf_creator.h"
|
#include "core/fpdfapi/fpdf_parser/cpdf_crypto_handler.h"
|
#include "core/fpdfapi/fpdf_parser/cpdf_security_handler.h"
|
#include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
|
#include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
|
#include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
|
#include "core/fpdfapi/fpdf_parser/include/cpdf_parser.h"
|
#include "core/fpdfapi/fpdf_parser/include/cpdf_reference.h"
|
#include "core/fpdfapi/fpdf_parser/include/cpdf_stream.h"
|
#include "core/fpdfapi/fpdf_parser/include/cpdf_stream_acc.h"
|
#include "core/fpdfapi/fpdf_parser/include/cpdf_string.h"
|
#include "core/fpdfapi/fpdf_parser/include/fpdf_parser_decode.h"
|
#include "core/fxcrt/include/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<uint8_t> PDF_GenerateFileID(uint32_t dwSeed1, uint32_t dwSeed2) {
|
std::vector<uint8_t> buffer(sizeof(uint32_t) * 4);
|
uint32_t* pBuffer = reinterpret_cast<uint32_t*>(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->RemoveAt("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->SetAtInteger("Length", m_dwSize);
|
m_pDict->SetAtName("Filter", "FlateDecode");
|
m_pDict->RemoveAt("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<</Type /ObjStm /N ")) < 0) {
|
return -1;
|
}
|
offset += len;
|
uint32_t iCount = pdfium::CollectionSize<uint32_t>(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<int32_t>(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<int32_t>(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<int32_t>(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<</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(" ")) < 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<</Columns 7/Predictor 12>>")) <
|
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)) < 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->GetStringBy("Type") == "XRef")
|
return 0;
|
return 1;
|
}
|
|
if (pDict) {
|
if (pDict == m_pDocument->m_pRootDict || pDict == m_pEncryptDict)
|
return 1;
|
if (pDict->IsSignatureDict())
|
return 1;
|
if (pDict->GetStringBy("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<CPDF_Stream*>(pStream->AsStream()),
|
pStream != m_pMetadata);
|
CPDF_Encryptor encryptor(pCrypto, objnum, encoder.m_pData, encoder.m_dwSize);
|
if ((uint32_t)encoder.m_pDict->GetIntegerBy("Length") != encryptor.m_dwSize) {
|
encoder.CloneDict();
|
encoder.m_pDict->SetAtInteger("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<CPDF_Stream*>(pObj->AsStream()),
|
TRUE);
|
CPDF_Encryptor encryptor(m_pCryptoHandler, objnum, encoder.m_pData,
|
encoder.m_dwSize);
|
if ((uint32_t)encoder.m_pDict->GetIntegerBy("Length") !=
|
encryptor.m_dwSize) {
|
encoder.CloneDict();
|
encoder.m_pDict->SetAtInteger("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 =
|
pdfium::ContainsKey(m_pDocument->m_IndirectObjs, 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->GetIndirectObject(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);
|
auto it = m_pDocument->m_IndirectObjs.find(objnum);
|
if (it == m_pDocument->m_IndirectObjs.end()) {
|
++index;
|
continue;
|
}
|
m_ObjectOffset[objnum] = m_Offset;
|
if (WriteIndirectObj(it->second)) {
|
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->m_IndirectObjs) {
|
const uint32_t objnum = pair.first;
|
const CPDF_Object* pObj = pair.second;
|
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->GetDirectObjectBy("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->m_LastObjNum + 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->m_pRootDict->GetObjNum()) < 0) {
|
return -1;
|
}
|
if (m_File.AppendString(" 0 R\r\n") < 0) {
|
return -1;
|
}
|
if (m_pDocument->m_pInfoDict) {
|
if (m_File.AppendString("/Info ") < 0) {
|
return -1;
|
}
|
if (m_File.AppendDWord(m_pDocument->m_pInfoDict->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, &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();
|
if (m_pIDArray) {
|
m_pIDArray->Release();
|
m_pIDArray = nullptr;
|
}
|
}
|
|
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 (!m_pIDArray) {
|
m_pIDArray = new CPDF_Array;
|
CPDF_Object* pID1 = pOldIDArray ? pOldIDArray->GetObjectAt(0) : nullptr;
|
if (pID1) {
|
m_pIDArray->Add(pID1->Clone());
|
} else {
|
std::vector<uint8_t> 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), m_pDocument);
|
}
|
}
|
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<uint8_t> 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), m_pDocument);
|
return;
|
}
|
m_pIDArray->Add(m_pIDArray->GetObjectAt(0)->Clone());
|
if (m_pEncryptDict && !pOldIDArray && m_pParser && bNewId) {
|
if (m_pEncryptDict->GetStringBy("Filter") == "Standard") {
|
CFX_ByteString user_pass = m_pParser->GetPassword();
|
uint32_t flag = PDF_ENCRYPT_CONTENT;
|
|
CPDF_SecurityHandler handler;
|
handler.OnCreate(m_pEncryptDict, m_pIDArray, 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;
|
}
|
