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Unified Diff: core/fpdfapi/fpdf_edit/fpdf_edit_create.cpp

Issue 1902713003: Cleanups from prior CLs. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master
Patch Set: Created 4 years, 8 months ago
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Index: 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
index 7570a796e4abc9136506628ef673a6c0a3c12782..438c777c0ad818a9b778b434b20c3e324eefa902 100644
--- a/core/fpdfapi/fpdf_edit/fpdf_edit_create.cpp
+++ b/core/fpdfapi/fpdf_edit/fpdf_edit_create.cpp
@@ -387,14 +387,15 @@ int32_t OutputIndex(CFX_FileBufferArchive* pFile, FX_FILESIZE offset) {
class CPDF_FlateEncoder {
public:
- CPDF_FlateEncoder();
+ CPDF_FlateEncoder(CPDF_Stream* pStream, FX_BOOL bFlateEncode);
+ CPDF_FlateEncoder(const uint8_t* pBuffer,
+ uint32_t size,
+ FX_BOOL bFlateEncode,
+ FX_BOOL bXRefStream = FALSE);
~CPDF_FlateEncoder();
- FX_BOOL Initialize(CPDF_Stream* pStream, FX_BOOL bFlateEncode);
- FX_BOOL Initialize(const uint8_t* pBuffer,
- uint32_t size,
- FX_BOOL bFlateEncode,
- FX_BOOL bXRefStream = FALSE);
+
void CloneDict();
+
uint8_t* m_pData;
uint32_t m_dwSize;
CPDF_Dictionary* m_pDict;
@@ -402,13 +403,7 @@ class CPDF_FlateEncoder {
FX_BOOL m_bNewData;
CPDF_StreamAcc m_Acc;
};
-CPDF_FlateEncoder::CPDF_FlateEncoder() {
- m_pData = NULL;
- m_dwSize = 0;
- m_pDict = NULL;
- m_bCloned = FALSE;
- m_bNewData = FALSE;
-}
+
void CPDF_FlateEncoder::CloneDict() {
if (!m_bCloned) {
m_pDict = ToDictionary(m_pDict->Clone());
@@ -416,8 +411,13 @@ void CPDF_FlateEncoder::CloneDict() {
m_bCloned = TRUE;
}
}
-FX_BOOL CPDF_FlateEncoder::Initialize(CPDF_Stream* pStream,
- FX_BOOL bFlateEncode) {
+
+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")) ||
@@ -436,10 +436,9 @@ FX_BOOL CPDF_FlateEncoder::Initialize(CPDF_Stream* pStream,
m_dwSize = m_Acc.GetSize();
m_pDict = pStream->GetDict();
}
- return TRUE;
+ return;
}
- m_pData = NULL;
- m_dwSize = 0;
+
m_bNewData = TRUE;
m_bCloned = TRUE;
::FlateEncode(m_Acc.GetData(), m_Acc.GetSize(), m_pData, m_dwSize);
@@ -447,73 +446,71 @@ FX_BOOL CPDF_FlateEncoder::Initialize(CPDF_Stream* pStream,
m_pDict->SetAtInteger("Length", m_dwSize);
m_pDict->SetAtName("Filter", "FlateDecode");
m_pDict->RemoveAt("DecodeParms");
- return TRUE;
}
-FX_BOOL CPDF_FlateEncoder::Initialize(const uint8_t* pBuffer,
- uint32_t size,
- FX_BOOL bFlateEncode,
- FX_BOOL bXRefStream) {
+
+CPDF_FlateEncoder::CPDF_FlateEncoder(const uint8_t* pBuffer,
+ uint32_t size,
+ FX_BOOL bFlateEncode,
+ FX_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 TRUE;
+ return;
}
m_bNewData = TRUE;
- if (bXRefStream) {
+ if (bXRefStream)
::FlateEncode(pBuffer, size, 12, 1, 8, 7, m_pData, m_dwSize);
- } else {
+ else
::FlateEncode(pBuffer, size, m_pData, m_dwSize);
- }
- return TRUE;
}
+
CPDF_FlateEncoder::~CPDF_FlateEncoder() {
- if (m_bCloned && m_pDict) {
+ if (m_bCloned && m_pDict)
m_pDict->Release();
- }
- if (m_bNewData) {
+ if (m_bNewData)
FX_Free(m_pData);
- }
}
+
class CPDF_Encryptor {
public:
- CPDF_Encryptor();
+ CPDF_Encryptor(CPDF_CryptoHandler* pHandler,
+ int objnum,
+ uint8_t* src_data,
+ uint32_t src_size);
~CPDF_Encryptor();
- FX_BOOL Initialize(CPDF_CryptoHandler* pHandler,
- int objnum,
- uint8_t* src_data,
- uint32_t src_size);
+
uint8_t* m_pData;
uint32_t m_dwSize;
FX_BOOL m_bNewBuf;
};
-CPDF_Encryptor::CPDF_Encryptor() {
- m_pData = NULL;
- m_dwSize = 0;
- m_bNewBuf = FALSE;
-}
-FX_BOOL CPDF_Encryptor::Initialize(CPDF_CryptoHandler* pHandler,
- int objnum,
- uint8_t* src_data,
- uint32_t src_size) {
- if (src_size == 0) {
- return TRUE;
- }
+
+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;
- m_bNewBuf = FALSE;
- return TRUE;
+ 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;
- return TRUE;
}
+
CPDF_Encryptor::~CPDF_Encryptor() {
- if (m_bNewBuf) {
+ if (m_bNewBuf)
FX_Free(m_pData);
- }
}
} // namespace
@@ -548,7 +545,6 @@ FX_FILESIZE CPDF_ObjectStream::End(CPDF_Creator* pCreator) {
return 0;
}
CFX_FileBufferArchive* pFile = &pCreator->m_File;
- CPDF_CryptoHandler* pHandler = pCreator->m_pCryptoHandler;
FX_FILESIZE ObjOffset = pCreator->m_Offset;
if (!m_dwObjNum) {
m_dwObjNum = ++pCreator->m_dwLastObjNum;
@@ -583,7 +579,8 @@ FX_FILESIZE CPDF_ObjectStream::End(CPDF_Creator* pCreator) {
return -1;
}
offset += len + 15;
- if (!pCreator->m_bCompress && !pHandler) {
+
+ if (!pCreator->m_bCompress && !pCreator->m_pCryptoHandler) {
if ((len = pFile->AppendDWord(
(uint32_t)(tempBuffer.GetLength() + m_Buffer.GetLength()))) < 0) {
return -1;
@@ -602,12 +599,10 @@ FX_FILESIZE CPDF_ObjectStream::End(CPDF_Creator* pCreator) {
offset += len + tempBuffer.GetLength() + m_Buffer.GetLength();
} else {
tempBuffer << m_Buffer;
- CPDF_FlateEncoder encoder;
- encoder.Initialize(tempBuffer.GetBuffer(), tempBuffer.GetLength(),
- pCreator->m_bCompress);
- CPDF_Encryptor encryptor;
- encryptor.Initialize(pHandler, m_dwObjNum, encoder.m_pData,
- encoder.m_dwSize);
+ CPDF_FlateEncoder encoder(tempBuffer.GetBuffer(), tempBuffer.GetLength(),
+ pCreator->m_bCompress);
+ CPDF_Encryptor encryptor(pCreator->m_pCryptoHandler, m_dwObjNum,
+ encoder.m_pData, encoder.m_dwSize);
if ((len = pFile->AppendDWord(encryptor.m_dwSize)) < 0) {
return -1;
}
@@ -815,9 +810,8 @@ FX_BOOL CPDF_XRefStream::GenerateXRefStream(CPDF_Creator* pCreator,
offset += len + 6;
}
FX_BOOL bPredictor = TRUE;
- CPDF_FlateEncoder encoder;
- encoder.Initialize(m_Buffer.GetBuffer(), m_Buffer.GetLength(),
- pCreator->m_bCompress, bPredictor);
+ CPDF_FlateEncoder encoder(m_Buffer.GetBuffer(), m_Buffer.GetLength(),
+ pCreator->m_bCompress, bPredictor);
if (pCreator->m_bCompress) {
if (pFile->AppendString("/Filter /FlateDecode") < 0) {
return FALSE;
@@ -915,26 +909,25 @@ CPDF_Creator::CPDF_Creator(CPDF_Document* pDoc) {
m_pEncryptDict = m_pParser->GetEncryptDict();
m_pCryptoHandler = m_pParser->GetCryptoHandler();
} else {
- m_pEncryptDict = NULL;
- m_pCryptoHandler = NULL;
+ m_pEncryptDict = nullptr;
+ m_pCryptoHandler = nullptr;
}
m_bSecurityChanged = FALSE;
- m_bStandardSecurity = FALSE;
- m_pMetadata = NULL;
+ m_pMetadata = nullptr;
m_bEncryptCloned = FALSE;
m_bEncryptMetadata = FALSE;
m_Offset = 0;
m_iStage = -1;
m_dwFlags = 0;
- m_Pos = NULL;
+ m_Pos = nullptr;
m_XrefStart = 0;
- m_pXRefStream = NULL;
+ m_pXRefStream = nullptr;
m_ObjectStreamSize = 200;
m_dwLastObjNum = m_pDocument->GetLastObjNum();
- m_pIDArray = NULL;
+ m_pIDArray = nullptr;
m_FileVersion = 0;
m_dwEnryptObjNum = 0;
- m_bNewCrypto = FALSE;
+ m_bLocalCryptoHandler = FALSE;
}
CPDF_Creator::~CPDF_Creator() {
ResetStandardSecurity();
@@ -1025,14 +1018,9 @@ int32_t CPDF_Creator::AppendObjectNumberToXRef(uint32_t objnum) {
int32_t CPDF_Creator::WriteStream(const CPDF_Object* pStream,
uint32_t objnum,
CPDF_CryptoHandler* pCrypto) {
- CPDF_FlateEncoder encoder;
- encoder.Initialize(const_cast<CPDF_Stream*>(pStream->AsStream()),
- pStream == m_pMetadata ? FALSE : m_bCompress);
- CPDF_Encryptor encryptor;
- if (!encryptor.Initialize(pCrypto, objnum, encoder.m_pData,
- encoder.m_dwSize)) {
- return -1;
- }
+ CPDF_FlateEncoder encoder(const_cast<CPDF_Stream*>(pStream->AsStream()),
+ pStream == m_pMetadata ? FALSE : m_bCompress);
+ 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);
@@ -1067,9 +1055,9 @@ int32_t CPDF_Creator::WriteIndirectObj(uint32_t objnum,
m_Offset += len;
if (pObj->IsStream()) {
- CPDF_CryptoHandler* pHandler = nullptr;
- pHandler =
- (pObj == m_pMetadata && !m_bEncryptMetadata) ? NULL : m_pCryptoHandler;
+ CPDF_CryptoHandler* pHandler = (pObj == m_pMetadata && !m_bEncryptMetadata)
+ ? nullptr
+ : m_pCryptoHandler;
if (WriteStream(pObj, objnum, pHandler) < 0)
return -1;
} else {
@@ -1130,9 +1118,8 @@ int32_t CPDF_Creator::WriteDirectObj(uint32_t objnum,
m_Offset += len;
break;
}
- CPDF_Encryptor encryptor;
- encryptor.Initialize(m_pCryptoHandler, objnum, (uint8_t*)str.c_str(),
- str.GetLength());
+ 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);
@@ -1143,12 +1130,10 @@ int32_t CPDF_Creator::WriteDirectObj(uint32_t objnum,
break;
}
case CPDF_Object::STREAM: {
- CPDF_FlateEncoder encoder;
- encoder.Initialize(const_cast<CPDF_Stream*>(pObj->AsStream()),
- m_bCompress);
- CPDF_Encryptor encryptor;
- CPDF_CryptoHandler* pHandler = m_pCryptoHandler;
- encryptor.Initialize(pHandler, objnum, encoder.m_pData, encoder.m_dwSize);
+ CPDF_FlateEncoder encoder(const_cast<CPDF_Stream*>(pObj->AsStream()),
+ m_bCompress);
+ 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();
@@ -1224,12 +1209,11 @@ int32_t CPDF_Creator::WriteDirectObj(uint32_t objnum,
break;
}
case CPDF_Object::DICTIONARY: {
- if (!m_pCryptoHandler || pObj == m_pEncryptDict) {
+ if (!m_pCryptoHandler || pObj == m_pEncryptDict)
return PDF_CreatorAppendObject(pObj, &m_File, m_Offset);
- }
- if (m_File.AppendString("<<") < 0) {
+ if (m_File.AppendString("<<") < 0)
return -1;
- }
+
m_Offset += 2;
const CPDF_Dictionary* p = pObj->AsDictionary();
bool bSignDict = p->IsSignatureDict();
@@ -2013,12 +1997,11 @@ void CPDF_Creator::InitID(FX_BOOL bDefault) {
CPDF_SecurityHandler handler;
handler.OnCreate(m_pEncryptDict, m_pIDArray, user_pass.raw_str(),
user_pass.GetLength(), flag);
- if (m_bNewCrypto) {
+ if (m_bLocalCryptoHandler)
delete m_pCryptoHandler;
- }
m_pCryptoHandler = new CPDF_CryptoHandler;
m_pCryptoHandler->Init(m_pEncryptDict, &handler);
- m_bNewCrypto = TRUE;
+ m_bLocalCryptoHandler = TRUE;
m_bSecurityChanged = TRUE;
}
}
@@ -2059,21 +2042,14 @@ FX_BOOL CPDF_Creator::SetFileVersion(int32_t fileVersion) {
void CPDF_Creator::RemoveSecurity() {
ResetStandardSecurity();
m_bSecurityChanged = TRUE;
- m_pEncryptDict = NULL;
- m_pCryptoHandler = NULL;
+ m_pEncryptDict = nullptr;
+ m_pCryptoHandler = nullptr;
}
void CPDF_Creator::ResetStandardSecurity() {
- if (m_bStandardSecurity || m_bNewCrypto) {
- delete m_pCryptoHandler;
- m_pCryptoHandler = NULL;
- }
- m_bNewCrypto = FALSE;
- if (!m_bStandardSecurity) {
+ if (!m_bLocalCryptoHandler)
return;
- }
- if (m_pEncryptDict) {
- m_pEncryptDict->Release();
- m_pEncryptDict = NULL;
- }
- m_bStandardSecurity = FALSE;
+
+ delete m_pCryptoHandler;
+ m_pCryptoHandler = nullptr;
+ m_bLocalCryptoHandler = FALSE;
}
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