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Unified Diff: core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp

Issue 1265503005: clang-format all pdfium code. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master
Patch Set: sigh Created 5 years, 4 months ago
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Index: core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
index 854be75ad440041ed9fc5778e1755c0175ef67ea..d0d449308dd2b5497c09794d354502fbfe633924 100644
--- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
+++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
@@ -13,4591 +13,4647 @@
#include "../../../include/fxcrt/fx_safe_types.h"
#include "../fpdf_page/pageint.h"
-FX_BOOL IsSignatureDict(const CPDF_Dictionary* pDict)
-{
- CPDF_Object* pType = pDict->GetElementValue(FX_BSTRC("Type"));
+FX_BOOL IsSignatureDict(const CPDF_Dictionary* pDict) {
+ CPDF_Object* pType = pDict->GetElementValue(FX_BSTRC("Type"));
+ if (!pType) {
+ pType = pDict->GetElementValue(FX_BSTRC("FT"));
if (!pType) {
- pType = pDict->GetElementValue(FX_BSTRC("FT"));
- if (!pType) {
- return FALSE;
- }
- }
- if (pType->GetString() == FX_BSTRC("Sig")) {
- return TRUE;
+ return FALSE;
}
- return FALSE;
+ }
+ if (pType->GetString() == FX_BSTRC("Sig")) {
+ return TRUE;
+ }
+ return FALSE;
}
-static int _CompareFileSize(const void* p1, const void* p2)
-{
- FX_FILESIZE ret = (*(FX_FILESIZE*)p1) - (*(FX_FILESIZE*)p2);
- if (ret > 0) {
- return 1;
- }
- if (ret < 0) {
- return -1;
- }
- return 0;
+static int _CompareFileSize(const void* p1, const void* p2) {
+ FX_FILESIZE ret = (*(FX_FILESIZE*)p1) - (*(FX_FILESIZE*)p2);
+ if (ret > 0) {
+ return 1;
+ }
+ if (ret < 0) {
+ return -1;
+ }
+ return 0;
}
-CPDF_Parser::CPDF_Parser()
-{
- m_pDocument = NULL;
- m_pTrailer = NULL;
- m_pEncryptDict = NULL;
- m_pSecurityHandler = NULL;
- m_pLinearized = NULL;
- m_dwFirstPageNo = 0;
- m_dwXrefStartObjNum = 0;
- m_bOwnFileRead = TRUE;
- m_FileVersion = 0;
- m_bForceUseSecurityHandler = FALSE;
+CPDF_Parser::CPDF_Parser() {
+ m_pDocument = NULL;
+ m_pTrailer = NULL;
+ m_pEncryptDict = NULL;
+ m_pSecurityHandler = NULL;
+ m_pLinearized = NULL;
+ m_dwFirstPageNo = 0;
+ m_dwXrefStartObjNum = 0;
+ m_bOwnFileRead = TRUE;
+ m_FileVersion = 0;
+ m_bForceUseSecurityHandler = FALSE;
}
-CPDF_Parser::~CPDF_Parser()
-{
- CloseParser(FALSE);
+CPDF_Parser::~CPDF_Parser() {
+ CloseParser(FALSE);
}
-FX_DWORD CPDF_Parser::GetLastObjNum()
-{
- FX_DWORD dwSize = m_CrossRef.GetSize();
- return dwSize ? dwSize - 1 : 0;
+FX_DWORD CPDF_Parser::GetLastObjNum() {
+ FX_DWORD dwSize = m_CrossRef.GetSize();
+ return dwSize ? dwSize - 1 : 0;
}
-void CPDF_Parser::SetEncryptDictionary(CPDF_Dictionary* pDict)
-{
- m_pEncryptDict = pDict;
+void CPDF_Parser::SetEncryptDictionary(CPDF_Dictionary* pDict) {
+ m_pEncryptDict = pDict;
}
-void CPDF_Parser::CloseParser(FX_BOOL bReParse)
-{
- m_bVersionUpdated = FALSE;
- if (!bReParse) {
- delete m_pDocument;
- m_pDocument = NULL;
- }
- if (m_pTrailer) {
- m_pTrailer->Release();
- m_pTrailer = NULL;
- }
- ReleaseEncryptHandler();
- SetEncryptDictionary(NULL);
- if (m_bOwnFileRead && m_Syntax.m_pFileAccess) {
- m_Syntax.m_pFileAccess->Release();
- m_Syntax.m_pFileAccess = NULL;
- }
- FX_POSITION pos = m_ObjectStreamMap.GetStartPosition();
- while (pos) {
- void* objnum;
- CPDF_StreamAcc* pStream;
- m_ObjectStreamMap.GetNextAssoc(pos, objnum, (void*&)pStream);
- delete pStream;
- }
- m_ObjectStreamMap.RemoveAll();
- m_SortedOffset.RemoveAll();
- m_CrossRef.RemoveAll();
- m_V5Type.RemoveAll();
- m_ObjVersion.RemoveAll();
- int32_t iLen = m_Trailers.GetSize();
- for (int32_t i = 0; i < iLen; ++i) {
- if (CPDF_Dictionary* trailer = m_Trailers.GetAt(i))
- trailer->Release();
- }
- m_Trailers.RemoveAll();
- if (m_pLinearized) {
- m_pLinearized->Release();
- m_pLinearized = NULL;
- }
+void CPDF_Parser::CloseParser(FX_BOOL bReParse) {
+ m_bVersionUpdated = FALSE;
+ if (!bReParse) {
+ delete m_pDocument;
+ m_pDocument = NULL;
+ }
+ if (m_pTrailer) {
+ m_pTrailer->Release();
+ m_pTrailer = NULL;
+ }
+ ReleaseEncryptHandler();
+ SetEncryptDictionary(NULL);
+ if (m_bOwnFileRead && m_Syntax.m_pFileAccess) {
+ m_Syntax.m_pFileAccess->Release();
+ m_Syntax.m_pFileAccess = NULL;
+ }
+ FX_POSITION pos = m_ObjectStreamMap.GetStartPosition();
+ while (pos) {
+ void* objnum;
+ CPDF_StreamAcc* pStream;
+ m_ObjectStreamMap.GetNextAssoc(pos, objnum, (void*&)pStream);
+ delete pStream;
+ }
+ m_ObjectStreamMap.RemoveAll();
+ m_SortedOffset.RemoveAll();
+ m_CrossRef.RemoveAll();
+ m_V5Type.RemoveAll();
+ m_ObjVersion.RemoveAll();
+ int32_t iLen = m_Trailers.GetSize();
+ for (int32_t i = 0; i < iLen; ++i) {
+ if (CPDF_Dictionary* trailer = m_Trailers.GetAt(i))
+ trailer->Release();
+ }
+ m_Trailers.RemoveAll();
+ if (m_pLinearized) {
+ m_pLinearized->Release();
+ m_pLinearized = NULL;
+ }
}
-static int32_t GetHeaderOffset(IFX_FileRead* pFile)
-{
- FX_DWORD tag = FXDWORD_FROM_LSBFIRST(0x46445025);
- uint8_t buf[4];
- int32_t offset = 0;
- while (1) {
- if (!pFile->ReadBlock(buf, offset, 4)) {
- return -1;
- }
- if (*(FX_DWORD*)buf == tag) {
- return offset;
- }
- offset ++;
- if (offset > 1024) {
- return -1;
- }
- }
- return -1;
+static int32_t GetHeaderOffset(IFX_FileRead* pFile) {
+ FX_DWORD tag = FXDWORD_FROM_LSBFIRST(0x46445025);
+ uint8_t buf[4];
+ int32_t offset = 0;
+ while (1) {
+ if (!pFile->ReadBlock(buf, offset, 4)) {
+ return -1;
+ }
+ if (*(FX_DWORD*)buf == tag) {
+ return offset;
+ }
+ offset++;
+ if (offset > 1024) {
+ return -1;
+ }
+ }
+ return -1;
}
-FX_DWORD CPDF_Parser::StartParse(const FX_CHAR* filename, FX_BOOL bReParse)
-{
- IFX_FileRead* pFileAccess = FX_CreateFileRead(filename);
- if (!pFileAccess) {
- return PDFPARSE_ERROR_FILE;
- }
- return StartParse(pFileAccess, bReParse);
+FX_DWORD CPDF_Parser::StartParse(const FX_CHAR* filename, FX_BOOL bReParse) {
+ IFX_FileRead* pFileAccess = FX_CreateFileRead(filename);
+ if (!pFileAccess) {
+ return PDFPARSE_ERROR_FILE;
+ }
+ return StartParse(pFileAccess, bReParse);
}
-FX_DWORD CPDF_Parser::StartParse(const FX_WCHAR* filename, FX_BOOL bReParse)
-{
- IFX_FileRead* pFileAccess = FX_CreateFileRead(filename);
- if (!pFileAccess) {
- return PDFPARSE_ERROR_FILE;
- }
- return StartParse(pFileAccess, bReParse);
+FX_DWORD CPDF_Parser::StartParse(const FX_WCHAR* filename, FX_BOOL bReParse) {
+ IFX_FileRead* pFileAccess = FX_CreateFileRead(filename);
+ if (!pFileAccess) {
+ return PDFPARSE_ERROR_FILE;
+ }
+ return StartParse(pFileAccess, bReParse);
}
CPDF_SecurityHandler* FPDF_CreateStandardSecurityHandler();
CPDF_SecurityHandler* FPDF_CreatePubKeyHandler(void*);
-FX_DWORD CPDF_Parser::StartParse(IFX_FileRead* pFileAccess, FX_BOOL bReParse, FX_BOOL bOwnFileRead)
-{
- CloseParser(bReParse);
- m_bXRefStream = FALSE;
- m_LastXRefOffset = 0;
- m_bOwnFileRead = bOwnFileRead;
- int32_t offset = GetHeaderOffset(pFileAccess);
- if (offset == -1) {
- if (bOwnFileRead && pFileAccess) {
- pFileAccess->Release();
- }
- return PDFPARSE_ERROR_FORMAT;
- }
- m_Syntax.InitParser(pFileAccess, offset);
- uint8_t ch;
- if (!m_Syntax.GetCharAt(5, ch)) {
- return PDFPARSE_ERROR_FORMAT;
- }
- if (ch >= '0' && ch <= '9') {
- m_FileVersion = (ch - '0') * 10;
- }
- if (!m_Syntax.GetCharAt(7, ch)) {
- return PDFPARSE_ERROR_FORMAT;
+FX_DWORD CPDF_Parser::StartParse(IFX_FileRead* pFileAccess,
+ FX_BOOL bReParse,
+ FX_BOOL bOwnFileRead) {
+ CloseParser(bReParse);
+ m_bXRefStream = FALSE;
+ m_LastXRefOffset = 0;
+ m_bOwnFileRead = bOwnFileRead;
+ int32_t offset = GetHeaderOffset(pFileAccess);
+ if (offset == -1) {
+ if (bOwnFileRead && pFileAccess) {
+ pFileAccess->Release();
+ }
+ return PDFPARSE_ERROR_FORMAT;
+ }
+ m_Syntax.InitParser(pFileAccess, offset);
+ uint8_t ch;
+ if (!m_Syntax.GetCharAt(5, ch)) {
+ return PDFPARSE_ERROR_FORMAT;
+ }
+ if (ch >= '0' && ch <= '9') {
+ m_FileVersion = (ch - '0') * 10;
+ }
+ if (!m_Syntax.GetCharAt(7, ch)) {
+ return PDFPARSE_ERROR_FORMAT;
+ }
+ if (ch >= '0' && ch <= '9') {
+ m_FileVersion += ch - '0';
+ }
+ if (m_Syntax.m_FileLen < m_Syntax.m_HeaderOffset + 9) {
+ return PDFPARSE_ERROR_FORMAT;
+ }
+ m_Syntax.RestorePos(m_Syntax.m_FileLen - m_Syntax.m_HeaderOffset - 9);
+ if (!bReParse) {
+ m_pDocument = new CPDF_Document(this);
+ }
+ FX_BOOL bXRefRebuilt = FALSE;
+ if (m_Syntax.SearchWord(FX_BSTRC("startxref"), TRUE, FALSE, 4096)) {
+ FX_FILESIZE startxref_offset = m_Syntax.SavePos();
+ void* pResult = FXSYS_bsearch(&startxref_offset, m_SortedOffset.GetData(),
+ m_SortedOffset.GetSize(), sizeof(FX_FILESIZE),
+ _CompareFileSize);
+ if (pResult == NULL) {
+ m_SortedOffset.Add(startxref_offset);
}
- if (ch >= '0' && ch <= '9') {
- m_FileVersion += ch - '0';
+ m_Syntax.GetKeyword();
+ FX_BOOL bNumber;
+ CFX_ByteString xrefpos_str = m_Syntax.GetNextWord(bNumber);
+ if (!bNumber) {
+ return PDFPARSE_ERROR_FORMAT;
}
- if (m_Syntax.m_FileLen < m_Syntax.m_HeaderOffset + 9) {
+ m_LastXRefOffset = (FX_FILESIZE)FXSYS_atoi64(xrefpos_str);
+ if (!LoadAllCrossRefV4(m_LastXRefOffset) &&
+ !LoadAllCrossRefV5(m_LastXRefOffset)) {
+ if (!RebuildCrossRef()) {
return PDFPARSE_ERROR_FORMAT;
+ }
+ bXRefRebuilt = TRUE;
+ m_LastXRefOffset = 0;
+ }
+ } else {
+ if (!RebuildCrossRef()) {
+ return PDFPARSE_ERROR_FORMAT;
+ }
+ bXRefRebuilt = TRUE;
+ }
+ FX_DWORD dwRet = SetEncryptHandler();
+ if (dwRet != PDFPARSE_ERROR_SUCCESS) {
+ return dwRet;
+ }
+ m_pDocument->LoadDoc();
+ if (m_pDocument->GetRoot() == NULL || m_pDocument->GetPageCount() == 0) {
+ if (bXRefRebuilt) {
+ return PDFPARSE_ERROR_FORMAT;
}
- m_Syntax.RestorePos(m_Syntax.m_FileLen - m_Syntax.m_HeaderOffset - 9);
- if (!bReParse) {
- m_pDocument = new CPDF_Document(this);
- }
- FX_BOOL bXRefRebuilt = FALSE;
- if (m_Syntax.SearchWord(FX_BSTRC("startxref"), TRUE, FALSE, 4096)) {
- FX_FILESIZE startxref_offset = m_Syntax.SavePos();
- void* pResult = FXSYS_bsearch(&startxref_offset, m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize);
- if (pResult == NULL) {
- m_SortedOffset.Add(startxref_offset);
- }
- m_Syntax.GetKeyword();
- FX_BOOL bNumber;
- CFX_ByteString xrefpos_str = m_Syntax.GetNextWord(bNumber);
- if (!bNumber) {
- return PDFPARSE_ERROR_FORMAT;
- }
- m_LastXRefOffset = (FX_FILESIZE)FXSYS_atoi64(xrefpos_str);
- if (!LoadAllCrossRefV4(m_LastXRefOffset) && !LoadAllCrossRefV5(m_LastXRefOffset)) {
- if (!RebuildCrossRef()) {
- return PDFPARSE_ERROR_FORMAT;
- }
- bXRefRebuilt = TRUE;
- m_LastXRefOffset = 0;
- }
- } else {
- if (!RebuildCrossRef()) {
- return PDFPARSE_ERROR_FORMAT;
- }
- bXRefRebuilt = TRUE;
+ ReleaseEncryptHandler();
+ if (!RebuildCrossRef()) {
+ return PDFPARSE_ERROR_FORMAT;
}
- FX_DWORD dwRet = SetEncryptHandler();
+ dwRet = SetEncryptHandler();
if (dwRet != PDFPARSE_ERROR_SUCCESS) {
- return dwRet;
+ return dwRet;
}
m_pDocument->LoadDoc();
- if (m_pDocument->GetRoot() == NULL || m_pDocument->GetPageCount() == 0) {
- if (bXRefRebuilt) {
- return PDFPARSE_ERROR_FORMAT;
- }
- ReleaseEncryptHandler();
- if (!RebuildCrossRef()) {
- return PDFPARSE_ERROR_FORMAT;
- }
- dwRet = SetEncryptHandler();
- if (dwRet != PDFPARSE_ERROR_SUCCESS) {
- return dwRet;
- }
- m_pDocument->LoadDoc();
- if (m_pDocument->GetRoot() == NULL) {
- return PDFPARSE_ERROR_FORMAT;
- }
- }
- FXSYS_qsort(m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize);
- FX_DWORD RootObjNum = GetRootObjNum();
+ if (m_pDocument->GetRoot() == NULL) {
+ return PDFPARSE_ERROR_FORMAT;
+ }
+ }
+ FXSYS_qsort(m_SortedOffset.GetData(), m_SortedOffset.GetSize(),
+ sizeof(FX_FILESIZE), _CompareFileSize);
+ FX_DWORD RootObjNum = GetRootObjNum();
+ if (RootObjNum == 0) {
+ ReleaseEncryptHandler();
+ RebuildCrossRef();
+ RootObjNum = GetRootObjNum();
if (RootObjNum == 0) {
- ReleaseEncryptHandler();
- RebuildCrossRef();
- RootObjNum = GetRootObjNum();
- if (RootObjNum == 0) {
- return PDFPARSE_ERROR_FORMAT;
- }
- dwRet = SetEncryptHandler();
- if (dwRet != PDFPARSE_ERROR_SUCCESS) {
- return dwRet;
- }
- }
- if (m_pSecurityHandler && !m_pSecurityHandler->IsMetadataEncrypted()) {
- CPDF_Reference* pMetadata = (CPDF_Reference*)m_pDocument->GetRoot()->GetElement(FX_BSTRC("Metadata"));
- if (pMetadata && pMetadata->GetType() == PDFOBJ_REFERENCE) {
- m_Syntax.m_MetadataObjnum = pMetadata->GetRefObjNum();
- }
+ return PDFPARSE_ERROR_FORMAT;
}
- return PDFPARSE_ERROR_SUCCESS;
+ dwRet = SetEncryptHandler();
+ if (dwRet != PDFPARSE_ERROR_SUCCESS) {
+ return dwRet;
+ }
+ }
+ if (m_pSecurityHandler && !m_pSecurityHandler->IsMetadataEncrypted()) {
+ CPDF_Reference* pMetadata =
+ (CPDF_Reference*)m_pDocument->GetRoot()->GetElement(
+ FX_BSTRC("Metadata"));
+ if (pMetadata && pMetadata->GetType() == PDFOBJ_REFERENCE) {
+ m_Syntax.m_MetadataObjnum = pMetadata->GetRefObjNum();
+ }
+ }
+ return PDFPARSE_ERROR_SUCCESS;
}
-FX_DWORD CPDF_Parser::SetEncryptHandler()
-{
- ReleaseEncryptHandler();
- SetEncryptDictionary(NULL);
- if (m_pTrailer == NULL) {
- return PDFPARSE_ERROR_FORMAT;
- }
- CPDF_Object* pEncryptObj = m_pTrailer->GetElement(FX_BSTRC("Encrypt"));
- if (pEncryptObj) {
- if (pEncryptObj->GetType() == PDFOBJ_DICTIONARY) {
- SetEncryptDictionary((CPDF_Dictionary*)pEncryptObj);
- } else if (pEncryptObj->GetType() == PDFOBJ_REFERENCE) {
- pEncryptObj = m_pDocument->GetIndirectObject(((CPDF_Reference*)pEncryptObj)->GetRefObjNum());
- if (pEncryptObj) {
- SetEncryptDictionary(pEncryptObj->GetDict());
- }
- }
- }
- if (m_bForceUseSecurityHandler) {
- FX_DWORD err = PDFPARSE_ERROR_HANDLER;
- if (m_pSecurityHandler == NULL) {
- return PDFPARSE_ERROR_HANDLER;
- }
- if (!m_pSecurityHandler->OnInit(this, m_pEncryptDict)) {
- return err;
- }
- CPDF_CryptoHandler* pCryptoHandler = m_pSecurityHandler->CreateCryptoHandler();
- if (!pCryptoHandler->Init(m_pEncryptDict, m_pSecurityHandler)) {
- delete pCryptoHandler;
- pCryptoHandler = NULL;
- return PDFPARSE_ERROR_HANDLER;
- }
- m_Syntax.SetEncrypt(pCryptoHandler);
- } else if (m_pEncryptDict) {
- CFX_ByteString filter = m_pEncryptDict->GetString(FX_BSTRC("Filter"));
- CPDF_SecurityHandler* pSecurityHandler = NULL;
- FX_DWORD err = PDFPARSE_ERROR_HANDLER;
- if (filter == FX_BSTRC("Standard")) {
- pSecurityHandler = FPDF_CreateStandardSecurityHandler();
- err = PDFPARSE_ERROR_PASSWORD;
- }
- if (pSecurityHandler == NULL) {
- return PDFPARSE_ERROR_HANDLER;
- }
- if (!pSecurityHandler->OnInit(this, m_pEncryptDict)) {
- delete pSecurityHandler;
- pSecurityHandler = NULL;
- return err;
- }
- m_pSecurityHandler = pSecurityHandler;
- CPDF_CryptoHandler* pCryptoHandler = pSecurityHandler->CreateCryptoHandler();
- if (!pCryptoHandler->Init(m_pEncryptDict, m_pSecurityHandler)) {
- delete pCryptoHandler;
- pCryptoHandler = NULL;
- return PDFPARSE_ERROR_HANDLER;
- }
- m_Syntax.SetEncrypt(pCryptoHandler);
+FX_DWORD CPDF_Parser::SetEncryptHandler() {
+ ReleaseEncryptHandler();
+ SetEncryptDictionary(NULL);
+ if (m_pTrailer == NULL) {
+ return PDFPARSE_ERROR_FORMAT;
+ }
+ CPDF_Object* pEncryptObj = m_pTrailer->GetElement(FX_BSTRC("Encrypt"));
+ if (pEncryptObj) {
+ if (pEncryptObj->GetType() == PDFOBJ_DICTIONARY) {
+ SetEncryptDictionary((CPDF_Dictionary*)pEncryptObj);
+ } else if (pEncryptObj->GetType() == PDFOBJ_REFERENCE) {
+ pEncryptObj = m_pDocument->GetIndirectObject(
+ ((CPDF_Reference*)pEncryptObj)->GetRefObjNum());
+ if (pEncryptObj) {
+ SetEncryptDictionary(pEncryptObj->GetDict());
+ }
+ }
+ }
+ if (m_bForceUseSecurityHandler) {
+ FX_DWORD err = PDFPARSE_ERROR_HANDLER;
+ if (m_pSecurityHandler == NULL) {
+ return PDFPARSE_ERROR_HANDLER;
+ }
+ if (!m_pSecurityHandler->OnInit(this, m_pEncryptDict)) {
+ return err;
+ }
+ CPDF_CryptoHandler* pCryptoHandler =
+ m_pSecurityHandler->CreateCryptoHandler();
+ if (!pCryptoHandler->Init(m_pEncryptDict, m_pSecurityHandler)) {
+ delete pCryptoHandler;
+ pCryptoHandler = NULL;
+ return PDFPARSE_ERROR_HANDLER;
+ }
+ m_Syntax.SetEncrypt(pCryptoHandler);
+ } else if (m_pEncryptDict) {
+ CFX_ByteString filter = m_pEncryptDict->GetString(FX_BSTRC("Filter"));
+ CPDF_SecurityHandler* pSecurityHandler = NULL;
+ FX_DWORD err = PDFPARSE_ERROR_HANDLER;
+ if (filter == FX_BSTRC("Standard")) {
+ pSecurityHandler = FPDF_CreateStandardSecurityHandler();
+ err = PDFPARSE_ERROR_PASSWORD;
+ }
+ if (pSecurityHandler == NULL) {
+ return PDFPARSE_ERROR_HANDLER;
+ }
+ if (!pSecurityHandler->OnInit(this, m_pEncryptDict)) {
+ delete pSecurityHandler;
+ pSecurityHandler = NULL;
+ return err;
}
- return PDFPARSE_ERROR_SUCCESS;
+ m_pSecurityHandler = pSecurityHandler;
+ CPDF_CryptoHandler* pCryptoHandler =
+ pSecurityHandler->CreateCryptoHandler();
+ if (!pCryptoHandler->Init(m_pEncryptDict, m_pSecurityHandler)) {
+ delete pCryptoHandler;
+ pCryptoHandler = NULL;
+ return PDFPARSE_ERROR_HANDLER;
+ }
+ m_Syntax.SetEncrypt(pCryptoHandler);
+ }
+ return PDFPARSE_ERROR_SUCCESS;
}
-void CPDF_Parser::ReleaseEncryptHandler()
-{
- delete m_Syntax.m_pCryptoHandler;
- m_Syntax.m_pCryptoHandler = NULL;
- if (!m_bForceUseSecurityHandler) {
- delete m_pSecurityHandler;
- m_pSecurityHandler = NULL;
- }
+void CPDF_Parser::ReleaseEncryptHandler() {
+ delete m_Syntax.m_pCryptoHandler;
+ m_Syntax.m_pCryptoHandler = NULL;
+ if (!m_bForceUseSecurityHandler) {
+ delete m_pSecurityHandler;
+ m_pSecurityHandler = NULL;
+ }
}
-FX_FILESIZE CPDF_Parser::GetObjectOffset(FX_DWORD objnum)
-{
- if (objnum >= (FX_DWORD)m_CrossRef.GetSize()) {
- return 0;
- }
- if (m_V5Type[objnum] == 1) {
- return m_CrossRef[objnum];
- }
- if (m_V5Type[objnum] == 2) {
- return m_CrossRef[(int32_t)m_CrossRef[objnum]];
- }
+FX_FILESIZE CPDF_Parser::GetObjectOffset(FX_DWORD objnum) {
+ if (objnum >= (FX_DWORD)m_CrossRef.GetSize()) {
return 0;
+ }
+ if (m_V5Type[objnum] == 1) {
+ return m_CrossRef[objnum];
+ }
+ if (m_V5Type[objnum] == 2) {
+ return m_CrossRef[(int32_t)m_CrossRef[objnum]];
+ }
+ return 0;
}
-static int32_t GetDirectInteger(CPDF_Dictionary* pDict, const CFX_ByteStringC& key)
-{
- CPDF_Object* pObj = pDict->GetElement(key);
- if (pObj == NULL) {
- return 0;
- }
- if (pObj->GetType() == PDFOBJ_NUMBER) {
- return ((CPDF_Number*)pObj)->GetInteger();
- }
+static int32_t GetDirectInteger(CPDF_Dictionary* pDict,
+ const CFX_ByteStringC& key) {
+ CPDF_Object* pObj = pDict->GetElement(key);
+ if (pObj == NULL) {
return 0;
+ }
+ if (pObj->GetType() == PDFOBJ_NUMBER) {
+ return ((CPDF_Number*)pObj)->GetInteger();
+ }
+ return 0;
}
-static FX_BOOL CheckDirectType(CPDF_Dictionary* pDict, const CFX_ByteStringC& key, int32_t iType)
-{
- CPDF_Object* pObj = pDict->GetElement(key);
- if (!pObj) {
- return TRUE;
- }
- return pObj->GetType() == iType;
+static FX_BOOL CheckDirectType(CPDF_Dictionary* pDict,
+ const CFX_ByteStringC& key,
+ int32_t iType) {
+ CPDF_Object* pObj = pDict->GetElement(key);
+ if (!pObj) {
+ return TRUE;
+ }
+ return pObj->GetType() == iType;
}
-FX_BOOL CPDF_Parser::LoadAllCrossRefV4(FX_FILESIZE xrefpos)
-{
- if (!LoadCrossRefV4(xrefpos, 0, TRUE, FALSE)) {
- return FALSE;
- }
- m_pTrailer = LoadTrailerV4();
- if (m_pTrailer == NULL) {
- return FALSE;
- }
- int32_t xrefsize = GetDirectInteger(m_pTrailer, FX_BSTRC("Size"));
- if (xrefsize <= 0 || xrefsize > (1 << 20)) {
- return FALSE;
- }
- m_CrossRef.SetSize(xrefsize);
- m_V5Type.SetSize(xrefsize);
- CFX_FileSizeArray CrossRefList, XRefStreamList;
- CrossRefList.Add(xrefpos);
- XRefStreamList.Add(GetDirectInteger(m_pTrailer, FX_BSTRC("XRefStm")));
- if (!CheckDirectType(m_pTrailer, FX_BSTRC("Prev"), PDFOBJ_NUMBER)) {
- return FALSE;
- }
- FX_FILESIZE newxrefpos = GetDirectInteger(m_pTrailer, FX_BSTRC("Prev"));
+FX_BOOL CPDF_Parser::LoadAllCrossRefV4(FX_FILESIZE xrefpos) {
+ if (!LoadCrossRefV4(xrefpos, 0, TRUE, FALSE)) {
+ return FALSE;
+ }
+ m_pTrailer = LoadTrailerV4();
+ if (m_pTrailer == NULL) {
+ return FALSE;
+ }
+ int32_t xrefsize = GetDirectInteger(m_pTrailer, FX_BSTRC("Size"));
+ if (xrefsize <= 0 || xrefsize > (1 << 20)) {
+ return FALSE;
+ }
+ m_CrossRef.SetSize(xrefsize);
+ m_V5Type.SetSize(xrefsize);
+ CFX_FileSizeArray CrossRefList, XRefStreamList;
+ CrossRefList.Add(xrefpos);
+ XRefStreamList.Add(GetDirectInteger(m_pTrailer, FX_BSTRC("XRefStm")));
+ if (!CheckDirectType(m_pTrailer, FX_BSTRC("Prev"), PDFOBJ_NUMBER)) {
+ return FALSE;
+ }
+ FX_FILESIZE newxrefpos = GetDirectInteger(m_pTrailer, FX_BSTRC("Prev"));
+ if (newxrefpos == xrefpos) {
+ return FALSE;
+ }
+ xrefpos = newxrefpos;
+ while (xrefpos) {
+ CrossRefList.InsertAt(0, xrefpos);
+ LoadCrossRefV4(xrefpos, 0, TRUE, FALSE);
+ CPDF_Dictionary* pDict = LoadTrailerV4();
+ if (pDict == NULL) {
+ return FALSE;
+ }
+ if (!CheckDirectType(pDict, FX_BSTRC("Prev"), PDFOBJ_NUMBER)) {
+ pDict->Release();
+ return FALSE;
+ }
+ newxrefpos = GetDirectInteger(pDict, FX_BSTRC("Prev"));
if (newxrefpos == xrefpos) {
- return FALSE;
+ pDict->Release();
+ return FALSE;
}
xrefpos = newxrefpos;
- while (xrefpos) {
- CrossRefList.InsertAt(0, xrefpos);
- LoadCrossRefV4(xrefpos, 0, TRUE, FALSE);
- CPDF_Dictionary* pDict = LoadTrailerV4();
- if (pDict == NULL) {
- return FALSE;
- }
- if (!CheckDirectType(pDict, FX_BSTRC("Prev"), PDFOBJ_NUMBER)) {
- pDict->Release();
- return FALSE;
- }
- newxrefpos = GetDirectInteger(pDict, FX_BSTRC("Prev"));
- if (newxrefpos == xrefpos) {
- pDict->Release();
- return FALSE;
- }
- xrefpos = newxrefpos;
- XRefStreamList.InsertAt(0, pDict->GetInteger(FX_BSTRC("XRefStm")));
- m_Trailers.Add(pDict);
- }
- for (int32_t i = 0; i < CrossRefList.GetSize(); i ++)
- if (!LoadCrossRefV4(CrossRefList[i], XRefStreamList[i], FALSE, i == 0)) {
- return FALSE;
- }
- return TRUE;
+ XRefStreamList.InsertAt(0, pDict->GetInteger(FX_BSTRC("XRefStm")));
+ m_Trailers.Add(pDict);
+ }
+ for (int32_t i = 0; i < CrossRefList.GetSize(); i++)
+ if (!LoadCrossRefV4(CrossRefList[i], XRefStreamList[i], FALSE, i == 0)) {
+ return FALSE;
+ }
+ return TRUE;
}
-FX_BOOL CPDF_Parser::LoadLinearizedAllCrossRefV4(FX_FILESIZE xrefpos, FX_DWORD dwObjCount)
-{
- if (!LoadLinearizedCrossRefV4(xrefpos, dwObjCount)) {
- return FALSE;
- }
- m_pTrailer = LoadTrailerV4();
- if (m_pTrailer == NULL) {
- return FALSE;
- }
- int32_t xrefsize = GetDirectInteger(m_pTrailer, FX_BSTRC("Size"));
- if (xrefsize == 0) {
- return FALSE;
- }
- CFX_FileSizeArray CrossRefList, XRefStreamList;
- CrossRefList.Add(xrefpos);
- XRefStreamList.Add(GetDirectInteger(m_pTrailer, FX_BSTRC("XRefStm")));
- xrefpos = GetDirectInteger(m_pTrailer, FX_BSTRC("Prev"));
- while (xrefpos) {
- CrossRefList.InsertAt(0, xrefpos);
- LoadCrossRefV4(xrefpos, 0, TRUE, FALSE);
- CPDF_Dictionary* pDict = LoadTrailerV4();
- if (pDict == NULL) {
- return FALSE;
- }
- xrefpos = GetDirectInteger(pDict, FX_BSTRC("Prev"));
- XRefStreamList.InsertAt(0, pDict->GetInteger(FX_BSTRC("XRefStm")));
- m_Trailers.Add(pDict);
- }
- for (int32_t i = 1; i < CrossRefList.GetSize(); i ++)
- if (!LoadCrossRefV4(CrossRefList[i], XRefStreamList[i], FALSE, i == 0)) {
- return FALSE;
- }
- return TRUE;
+FX_BOOL CPDF_Parser::LoadLinearizedAllCrossRefV4(FX_FILESIZE xrefpos,
+ FX_DWORD dwObjCount) {
+ if (!LoadLinearizedCrossRefV4(xrefpos, dwObjCount)) {
+ return FALSE;
+ }
+ m_pTrailer = LoadTrailerV4();
+ if (m_pTrailer == NULL) {
+ return FALSE;
+ }
+ int32_t xrefsize = GetDirectInteger(m_pTrailer, FX_BSTRC("Size"));
+ if (xrefsize == 0) {
+ return FALSE;
+ }
+ CFX_FileSizeArray CrossRefList, XRefStreamList;
+ CrossRefList.Add(xrefpos);
+ XRefStreamList.Add(GetDirectInteger(m_pTrailer, FX_BSTRC("XRefStm")));
+ xrefpos = GetDirectInteger(m_pTrailer, FX_BSTRC("Prev"));
+ while (xrefpos) {
+ CrossRefList.InsertAt(0, xrefpos);
+ LoadCrossRefV4(xrefpos, 0, TRUE, FALSE);
+ CPDF_Dictionary* pDict = LoadTrailerV4();
+ if (pDict == NULL) {
+ return FALSE;
+ }
+ xrefpos = GetDirectInteger(pDict, FX_BSTRC("Prev"));
+ XRefStreamList.InsertAt(0, pDict->GetInteger(FX_BSTRC("XRefStm")));
+ m_Trailers.Add(pDict);
+ }
+ for (int32_t i = 1; i < CrossRefList.GetSize(); i++)
+ if (!LoadCrossRefV4(CrossRefList[i], XRefStreamList[i], FALSE, i == 0)) {
+ return FALSE;
+ }
+ return TRUE;
}
-FX_BOOL CPDF_Parser::LoadLinearizedCrossRefV4(FX_FILESIZE pos, FX_DWORD dwObjCount)
-{
- FX_FILESIZE dwStartPos = pos - m_Syntax.m_HeaderOffset;
- m_Syntax.RestorePos(dwStartPos);
- void* pResult = FXSYS_bsearch(&pos, m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize);
+FX_BOOL CPDF_Parser::LoadLinearizedCrossRefV4(FX_FILESIZE pos,
+ FX_DWORD dwObjCount) {
+ FX_FILESIZE dwStartPos = pos - m_Syntax.m_HeaderOffset;
+ m_Syntax.RestorePos(dwStartPos);
+ void* pResult =
+ FXSYS_bsearch(&pos, m_SortedOffset.GetData(), m_SortedOffset.GetSize(),
+ sizeof(FX_FILESIZE), _CompareFileSize);
+ if (pResult == NULL) {
+ m_SortedOffset.Add(pos);
+ }
+ FX_DWORD start_objnum = 0;
+ FX_DWORD count = dwObjCount;
+ FX_FILESIZE SavedPos = m_Syntax.SavePos();
+ int32_t recordsize = 20;
+ char* pBuf = FX_Alloc(char, 1024 * recordsize + 1);
+ pBuf[1024 * recordsize] = '\0';
+ int32_t nBlocks = count / 1024 + 1;
+ for (int32_t block = 0; block < nBlocks; block++) {
+ int32_t block_size = block == nBlocks - 1 ? count % 1024 : 1024;
+ FX_DWORD dwReadSize = block_size * recordsize;
+ if ((FX_FILESIZE)(dwStartPos + dwReadSize) > m_Syntax.m_FileLen) {
+ FX_Free(pBuf);
+ return FALSE;
+ }
+ if (!m_Syntax.ReadBlock((uint8_t*)pBuf, dwReadSize)) {
+ FX_Free(pBuf);
+ return FALSE;
+ }
+ for (int32_t i = 0; i < block_size; i++) {
+ FX_DWORD objnum = start_objnum + block * 1024 + i;
+ char* pEntry = pBuf + i * recordsize;
+ if (pEntry[17] == 'f') {
+ m_CrossRef.SetAtGrow(objnum, 0);
+ m_V5Type.SetAtGrow(objnum, 0);
+ } else {
+ int32_t offset = FXSYS_atoi(pEntry);
+ if (offset == 0) {
+ for (int32_t c = 0; c < 10; c++) {
+ if (pEntry[c] < '0' || pEntry[c] > '9') {
+ FX_Free(pBuf);
+ return FALSE;
+ }
+ }
+ }
+ m_CrossRef.SetAtGrow(objnum, offset);
+ int32_t version = FXSYS_atoi(pEntry + 11);
+ if (version >= 1) {
+ m_bVersionUpdated = TRUE;
+ }
+ m_ObjVersion.SetAtGrow(objnum, version);
+ if (m_CrossRef[objnum] < m_Syntax.m_FileLen) {
+ void* pResult = FXSYS_bsearch(
+ &m_CrossRef[objnum], m_SortedOffset.GetData(),
+ m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize);
+ if (pResult == NULL) {
+ m_SortedOffset.Add(m_CrossRef[objnum]);
+ }
+ }
+ m_V5Type.SetAtGrow(objnum, 1);
+ }
+ }
+ }
+ FX_Free(pBuf);
+ m_Syntax.RestorePos(SavedPos + count * recordsize);
+ return TRUE;
+}
+FX_BOOL CPDF_Parser::LoadCrossRefV4(FX_FILESIZE pos,
+ FX_FILESIZE streampos,
+ FX_BOOL bSkip,
+ FX_BOOL bFirst) {
+ m_Syntax.RestorePos(pos);
+ if (m_Syntax.GetKeyword() != FX_BSTRC("xref")) {
+ return FALSE;
+ }
+ void* pResult =
+ FXSYS_bsearch(&pos, m_SortedOffset.GetData(), m_SortedOffset.GetSize(),
+ sizeof(FX_FILESIZE), _CompareFileSize);
+ if (pResult == NULL) {
+ m_SortedOffset.Add(pos);
+ }
+ if (streampos) {
+ void* pResult = FXSYS_bsearch(&streampos, m_SortedOffset.GetData(),
+ m_SortedOffset.GetSize(), sizeof(FX_FILESIZE),
+ _CompareFileSize);
if (pResult == NULL) {
- m_SortedOffset.Add(pos);
+ m_SortedOffset.Add(streampos);
}
- FX_DWORD start_objnum = 0;
- FX_DWORD count = dwObjCount;
+ }
+ while (1) {
FX_FILESIZE SavedPos = m_Syntax.SavePos();
+ FX_BOOL bIsNumber;
+ CFX_ByteString word = m_Syntax.GetNextWord(bIsNumber);
+ if (word.IsEmpty()) {
+ return FALSE;
+ }
+ if (!bIsNumber) {
+ m_Syntax.RestorePos(SavedPos);
+ break;
+ }
+ FX_DWORD start_objnum = FXSYS_atoi(word);
+ if (start_objnum >= (1 << 20)) {
+ return FALSE;
+ }
+ FX_DWORD count = m_Syntax.GetDirectNum();
+ m_Syntax.ToNextWord();
+ SavedPos = m_Syntax.SavePos();
+ FX_BOOL bFirstItem = FALSE;
int32_t recordsize = 20;
- char* pBuf = FX_Alloc(char, 1024 * recordsize + 1);
- pBuf[1024 * recordsize] = '\0';
- int32_t nBlocks = count / 1024 + 1;
- for (int32_t block = 0; block < nBlocks; block ++) {
+ if (bFirst) {
+ bFirstItem = TRUE;
+ }
+ m_dwXrefStartObjNum = start_objnum;
+ if (!bSkip) {
+ char* pBuf = FX_Alloc(char, 1024 * recordsize + 1);
+ pBuf[1024 * recordsize] = '\0';
+ int32_t nBlocks = count / 1024 + 1;
+ FX_BOOL bFirstBlock = TRUE;
+ for (int32_t block = 0; block < nBlocks; block++) {
int32_t block_size = block == nBlocks - 1 ? count % 1024 : 1024;
- FX_DWORD dwReadSize = block_size * recordsize;
- if ((FX_FILESIZE)(dwStartPos + dwReadSize) > m_Syntax.m_FileLen) {
- FX_Free(pBuf);
- return FALSE;
- }
- if (!m_Syntax.ReadBlock((uint8_t*)pBuf, dwReadSize)) {
- FX_Free(pBuf);
- return FALSE;
- }
- for (int32_t i = 0; i < block_size; i ++) {
- FX_DWORD objnum = start_objnum + block * 1024 + i;
- char* pEntry = pBuf + i * recordsize;
- if (pEntry[17] == 'f') {
- m_CrossRef.SetAtGrow(objnum, 0);
- m_V5Type.SetAtGrow(objnum, 0);
- } else {
- int32_t offset = FXSYS_atoi(pEntry);
- if (offset == 0) {
- for (int32_t c = 0; c < 10; c ++) {
- if (pEntry[c] < '0' || pEntry[c] > '9') {
- FX_Free(pBuf);
- return FALSE;
- }
- }
- }
- m_CrossRef.SetAtGrow(objnum, offset);
- int32_t version = FXSYS_atoi(pEntry + 11);
- if (version >= 1) {
- m_bVersionUpdated = TRUE;
- }
- m_ObjVersion.SetAtGrow(objnum, version);
- if (m_CrossRef[objnum] < m_Syntax.m_FileLen) {
- void* pResult = FXSYS_bsearch(&m_CrossRef[objnum], m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize);
- if (pResult == NULL) {
- m_SortedOffset.Add(m_CrossRef[objnum]);
- }
+ m_Syntax.ReadBlock((uint8_t*)pBuf, block_size * recordsize);
+ for (int32_t i = 0; i < block_size; i++) {
+ FX_DWORD objnum = start_objnum + block * 1024 + i;
+ char* pEntry = pBuf + i * recordsize;
+ if (pEntry[17] == 'f') {
+ if (bFirstItem) {
+ objnum = 0;
+ bFirstItem = FALSE;
+ }
+ if (bFirstBlock) {
+ FX_FILESIZE offset = (FX_FILESIZE)FXSYS_atoi64(pEntry);
+ int32_t version = FXSYS_atoi(pEntry + 11);
+ if (offset == 0 && version == 65535 && start_objnum != 0) {
+ start_objnum--;
+ objnum = 0;
+ }
+ }
+ m_CrossRef.SetAtGrow(objnum, 0);
+ m_V5Type.SetAtGrow(objnum, 0);
+ } else {
+ FX_FILESIZE offset = (FX_FILESIZE)FXSYS_atoi64(pEntry);
+ if (offset == 0) {
+ for (int32_t c = 0; c < 10; c++) {
+ if (pEntry[c] < '0' || pEntry[c] > '9') {
+ FX_Free(pBuf);
+ return FALSE;
}
- m_V5Type.SetAtGrow(objnum, 1);
+ }
+ }
+ m_CrossRef.SetAtGrow(objnum, offset);
+ int32_t version = FXSYS_atoi(pEntry + 11);
+ if (version >= 1) {
+ m_bVersionUpdated = TRUE;
+ }
+ m_ObjVersion.SetAtGrow(objnum, version);
+ if (m_CrossRef[objnum] < m_Syntax.m_FileLen) {
+ void* pResult =
+ FXSYS_bsearch(&m_CrossRef[objnum], m_SortedOffset.GetData(),
+ m_SortedOffset.GetSize(), sizeof(FX_FILESIZE),
+ _CompareFileSize);
+ if (pResult == NULL) {
+ m_SortedOffset.Add(m_CrossRef[objnum]);
+ }
}
+ m_V5Type.SetAtGrow(objnum, 1);
+ }
+ if (bFirstBlock) {
+ bFirstBlock = FALSE;
+ }
}
+ }
+ FX_Free(pBuf);
}
- FX_Free(pBuf);
m_Syntax.RestorePos(SavedPos + count * recordsize);
- return TRUE;
-}
-FX_BOOL CPDF_Parser::LoadCrossRefV4(FX_FILESIZE pos, FX_FILESIZE streampos, FX_BOOL bSkip, FX_BOOL bFirst)
-{
- m_Syntax.RestorePos(pos);
- if (m_Syntax.GetKeyword() != FX_BSTRC("xref")) {
- return FALSE;
+ }
+ if (streampos)
+ if (!LoadCrossRefV5(streampos, streampos, FALSE)) {
+ return FALSE;
}
- void* pResult = FXSYS_bsearch(&pos, m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize);
- if (pResult == NULL) {
- m_SortedOffset.Add(pos);
- }
- if (streampos) {
- void* pResult = FXSYS_bsearch(&streampos, m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize);
- if (pResult == NULL) {
- m_SortedOffset.Add(streampos);
- }
+ return TRUE;
+}
+FX_BOOL CPDF_Parser::LoadAllCrossRefV5(FX_FILESIZE xrefpos) {
+ if (!LoadCrossRefV5(xrefpos, xrefpos, TRUE)) {
+ return FALSE;
+ }
+ while (xrefpos)
+ if (!LoadCrossRefV5(xrefpos, xrefpos, FALSE)) {
+ return FALSE;
}
- while (1) {
- FX_FILESIZE SavedPos = m_Syntax.SavePos();
- FX_BOOL bIsNumber;
- CFX_ByteString word = m_Syntax.GetNextWord(bIsNumber);
- if (word.IsEmpty()) {
- return FALSE;
- }
- if (!bIsNumber) {
- m_Syntax.RestorePos(SavedPos);
+ m_ObjectStreamMap.InitHashTable(101, FALSE);
+ m_bXRefStream = TRUE;
+ return TRUE;
+}
+FX_BOOL CPDF_Parser::RebuildCrossRef() {
+ m_CrossRef.RemoveAll();
+ m_V5Type.RemoveAll();
+ m_SortedOffset.RemoveAll();
+ m_ObjVersion.RemoveAll();
+ if (m_pTrailer) {
+ m_pTrailer->Release();
+ m_pTrailer = NULL;
+ }
+ int32_t status = 0;
+ int32_t inside_index = 0;
+ FX_DWORD objnum = 0, gennum = 0;
+ int32_t depth = 0;
+ uint8_t* buffer = FX_Alloc(uint8_t, 4096);
+ FX_FILESIZE pos = m_Syntax.m_HeaderOffset;
+ FX_FILESIZE start_pos = 0, start_pos1 = 0;
+ FX_FILESIZE last_obj = -1, last_xref = -1, last_trailer = -1;
+ while (pos < m_Syntax.m_FileLen) {
+ FX_BOOL bOverFlow = FALSE;
+ FX_DWORD size = (FX_DWORD)(m_Syntax.m_FileLen - pos);
+ if (size > 4096) {
+ size = 4096;
+ }
+ if (!m_Syntax.m_pFileAccess->ReadBlock(buffer, pos, size)) {
+ break;
+ }
+ for (FX_DWORD i = 0; i < size; i++) {
+ uint8_t byte = buffer[i];
+ switch (status) {
+ case 0:
+ if (PDF_CharType[byte] == 'W') {
+ status = 1;
+ }
+ if (byte <= '9' && byte >= '0') {
+ --i;
+ status = 1;
+ }
+ if (byte == '%') {
+ inside_index = 0;
+ status = 9;
+ }
+ if (byte == '(') {
+ status = 10;
+ depth = 1;
+ }
+ if (byte == '<') {
+ inside_index = 1;
+ status = 11;
+ }
+ if (byte == '\\') {
+ status = 13;
+ }
+ if (byte == 't') {
+ status = 7;
+ inside_index = 1;
+ }
+ break;
+ case 1:
+ if (PDF_CharType[byte] == 'W') {
break;
- }
- FX_DWORD start_objnum = FXSYS_atoi(word);
- if (start_objnum >= (1 << 20)) {
- return FALSE;
- }
- FX_DWORD count = m_Syntax.GetDirectNum();
- m_Syntax.ToNextWord();
- SavedPos = m_Syntax.SavePos();
- FX_BOOL bFirstItem = FALSE;
- int32_t recordsize = 20;
- if (bFirst) {
- bFirstItem = TRUE;
- }
- m_dwXrefStartObjNum = start_objnum;
- if (!bSkip) {
- char* pBuf = FX_Alloc(char, 1024 * recordsize + 1);
- pBuf[1024 * recordsize] = '\0';
- int32_t nBlocks = count / 1024 + 1;
- FX_BOOL bFirstBlock = TRUE;
- for (int32_t block = 0; block < nBlocks; block ++) {
- int32_t block_size = block == nBlocks - 1 ? count % 1024 : 1024;
- m_Syntax.ReadBlock((uint8_t*)pBuf, block_size * recordsize);
- for (int32_t i = 0; i < block_size; i ++) {
- FX_DWORD objnum = start_objnum + block * 1024 + i;
- char* pEntry = pBuf + i * recordsize;
- if (pEntry[17] == 'f') {
- if (bFirstItem) {
- objnum = 0;
- bFirstItem = FALSE;
- }
- if (bFirstBlock) {
- FX_FILESIZE offset = (FX_FILESIZE)FXSYS_atoi64(pEntry);
- int32_t version = FXSYS_atoi(pEntry + 11);
- if (offset == 0 && version == 65535 && start_objnum != 0) {
- start_objnum--;
- objnum = 0;
- }
- }
- m_CrossRef.SetAtGrow(objnum, 0);
- m_V5Type.SetAtGrow(objnum, 0);
- } else {
- FX_FILESIZE offset = (FX_FILESIZE)FXSYS_atoi64(pEntry);
- if (offset == 0) {
- for (int32_t c = 0; c < 10; c ++) {
- if (pEntry[c] < '0' || pEntry[c] > '9') {
- FX_Free(pBuf);
- return FALSE;
- }
+ } else if (byte <= '9' && byte >= '0') {
+ start_pos = pos + i;
+ status = 2;
+ objnum = byte - '0';
+ } else if (byte == 't') {
+ status = 7;
+ inside_index = 1;
+ } else if (byte == 'x') {
+ status = 8;
+ inside_index = 1;
+ } else {
+ --i;
+ status = 0;
+ }
+ break;
+ case 2:
+ if (byte <= '9' && byte >= '0') {
+ objnum = objnum * 10 + byte - '0';
+ break;
+ } else if (PDF_CharType[byte] == 'W') {
+ status = 3;
+ } else {
+ --i;
+ status = 14;
+ inside_index = 0;
+ }
+ break;
+ case 3:
+ if (byte <= '9' && byte >= '0') {
+ start_pos1 = pos + i;
+ status = 4;
+ gennum = byte - '0';
+ } else if (PDF_CharType[byte] == 'W') {
+ break;
+ } else if (byte == 't') {
+ status = 7;
+ inside_index = 1;
+ } else {
+ --i;
+ status = 0;
+ }
+ break;
+ case 4:
+ if (byte <= '9' && byte >= '0') {
+ gennum = gennum * 10 + byte - '0';
+ break;
+ } else if (PDF_CharType[byte] == 'W') {
+ status = 5;
+ } else {
+ --i;
+ status = 0;
+ }
+ break;
+ case 5:
+ if (byte == 'o') {
+ status = 6;
+ inside_index = 1;
+ } else if (PDF_CharType[byte] == 'W') {
+ break;
+ } else if (byte <= '9' && byte >= '0') {
+ objnum = gennum;
+ gennum = byte - '0';
+ start_pos = start_pos1;
+ start_pos1 = pos + i;
+ status = 4;
+ } else if (byte == 't') {
+ status = 7;
+ inside_index = 1;
+ } else {
+ --i;
+ status = 0;
+ }
+ break;
+ case 6:
+ switch (inside_index) {
+ case 1:
+ if (byte != 'b') {
+ --i;
+ status = 0;
+ } else {
+ inside_index++;
+ }
+ break;
+ case 2:
+ if (byte != 'j') {
+ --i;
+ status = 0;
+ } else {
+ inside_index++;
+ }
+ break;
+ case 3:
+ if (PDF_CharType[byte] == 'W' || PDF_CharType[byte] == 'D') {
+ if (objnum > 0x1000000) {
+ status = 0;
+ break;
+ }
+ FX_FILESIZE obj_pos = start_pos - m_Syntax.m_HeaderOffset;
+ last_obj = start_pos;
+ void* pResult =
+ FXSYS_bsearch(&obj_pos, m_SortedOffset.GetData(),
+ m_SortedOffset.GetSize(), sizeof(FX_FILESIZE),
+ _CompareFileSize);
+ if (pResult == NULL) {
+ m_SortedOffset.Add(obj_pos);
+ }
+ FX_FILESIZE obj_end = 0;
+ CPDF_Object* pObject = ParseIndirectObjectAtByStrict(
+ m_pDocument, obj_pos, objnum, NULL, &obj_end);
+ if (pObject) {
+ int iType = pObject->GetType();
+ if (iType == PDFOBJ_STREAM) {
+ CPDF_Stream* pStream = (CPDF_Stream*)pObject;
+ CPDF_Dictionary* pDict = pStream->GetDict();
+ if (pDict) {
+ if (pDict->KeyExist(FX_BSTRC("Type"))) {
+ CFX_ByteString bsValue =
+ pDict->GetString(FX_BSTRC("Type"));
+ if (bsValue == FX_BSTRC("XRef") &&
+ pDict->KeyExist(FX_BSTRC("Size"))) {
+ CPDF_Object* pRoot =
+ pDict->GetElement(FX_BSTRC("Root"));
+ if (pRoot && pRoot->GetDict() &&
+ pRoot->GetDict()->GetElement(FX_BSTRC("Pages"))) {
+ if (m_pTrailer) {
+ m_pTrailer->Release();
}
+ m_pTrailer = (CPDF_Dictionary*)pDict->Clone();
+ }
}
- m_CrossRef.SetAtGrow(objnum, offset);
- int32_t version = FXSYS_atoi(pEntry + 11);
- if (version >= 1) {
- m_bVersionUpdated = TRUE;
+ }
+ }
+ }
+ }
+ FX_FILESIZE offset = 0;
+ m_Syntax.RestorePos(obj_pos);
+ offset = m_Syntax.FindTag(FX_BSTRC("obj"), 0);
+ if (offset == -1) {
+ offset = 0;
+ } else {
+ offset += 3;
+ }
+ FX_FILESIZE nLen = obj_end - obj_pos - offset;
+ if ((FX_DWORD)nLen > size - i) {
+ pos = obj_end + m_Syntax.m_HeaderOffset;
+ bOverFlow = TRUE;
+ } else {
+ i += (FX_DWORD)nLen;
+ }
+ if (m_CrossRef.GetSize() > (int32_t)objnum &&
+ m_CrossRef[objnum]) {
+ if (pObject) {
+ FX_DWORD oldgen = m_ObjVersion.GetAt(objnum);
+ m_CrossRef[objnum] = obj_pos;
+ m_ObjVersion.SetAt(objnum, (int16_t)gennum);
+ if (oldgen != gennum) {
+ m_bVersionUpdated = TRUE;
+ }
+ }
+ } else {
+ m_CrossRef.SetAtGrow(objnum, obj_pos);
+ m_V5Type.SetAtGrow(objnum, 1);
+ m_ObjVersion.SetAtGrow(objnum, (int16_t)gennum);
+ }
+ if (pObject) {
+ pObject->Release();
+ }
+ }
+ --i;
+ status = 0;
+ break;
+ }
+ break;
+ case 7:
+ if (inside_index == 7) {
+ if (PDF_CharType[byte] == 'W' || PDF_CharType[byte] == 'D') {
+ last_trailer = pos + i - 7;
+ m_Syntax.RestorePos(pos + i - m_Syntax.m_HeaderOffset);
+ CPDF_Object* pObj = m_Syntax.GetObject(m_pDocument, 0, 0, 0);
+ if (pObj) {
+ if (pObj->GetType() != PDFOBJ_DICTIONARY &&
+ pObj->GetType() != PDFOBJ_STREAM) {
+ pObj->Release();
+ } else {
+ CPDF_Dictionary* pTrailer = NULL;
+ if (pObj->GetType() == PDFOBJ_STREAM) {
+ pTrailer = ((CPDF_Stream*)pObj)->GetDict();
+ } else {
+ pTrailer = (CPDF_Dictionary*)pObj;
+ }
+ if (pTrailer) {
+ if (m_pTrailer) {
+ CPDF_Object* pRoot =
+ pTrailer->GetElement(FX_BSTRC("Root"));
+ if (pRoot == NULL ||
+ (pRoot->GetType() == PDFOBJ_REFERENCE &&
+ (FX_DWORD)m_CrossRef.GetSize() >
+ ((CPDF_Reference*)pRoot)->GetRefObjNum() &&
+ m_CrossRef.GetAt(((CPDF_Reference*)pRoot)
+ ->GetRefObjNum()) != 0)) {
+ FX_POSITION pos = pTrailer->GetStartPos();
+ while (pos) {
+ CFX_ByteString key;
+ CPDF_Object* pObj =
+ pTrailer->GetNextElement(pos, key);
+ m_pTrailer->SetAt(key, pObj->Clone(), m_pDocument);
}
- m_ObjVersion.SetAtGrow(objnum, version);
- if (m_CrossRef[objnum] < m_Syntax.m_FileLen) {
- void* pResult = FXSYS_bsearch(&m_CrossRef[objnum], m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize);
- if (pResult == NULL) {
- m_SortedOffset.Add(m_CrossRef[objnum]);
- }
+ pObj->Release();
+ } else {
+ pObj->Release();
+ }
+ } else {
+ if (pObj->GetType() == PDFOBJ_STREAM) {
+ m_pTrailer = (CPDF_Dictionary*)pTrailer->Clone();
+ pObj->Release();
+ } else {
+ m_pTrailer = pTrailer;
+ }
+ FX_FILESIZE dwSavePos = m_Syntax.SavePos();
+ CFX_ByteString strWord = m_Syntax.GetKeyword();
+ if (!strWord.Compare(FX_BSTRC("startxref"))) {
+ FX_BOOL bNumber = FALSE;
+ CFX_ByteString bsOffset = m_Syntax.GetNextWord(bNumber);
+ if (bNumber) {
+ m_LastXRefOffset = FXSYS_atoi(bsOffset);
}
- m_V5Type.SetAtGrow(objnum, 1);
- }
- if (bFirstBlock) {
- bFirstBlock = FALSE;
+ }
+ m_Syntax.RestorePos(dwSavePos);
}
+ } else {
+ pObj->Release();
+ }
}
+ }
}
- FX_Free(pBuf);
- }
- m_Syntax.RestorePos(SavedPos + count * recordsize);
+ --i;
+ status = 0;
+ } else if (byte == "trailer"[inside_index]) {
+ inside_index++;
+ } else {
+ --i;
+ status = 0;
+ }
+ break;
+ case 8:
+ if (inside_index == 4) {
+ last_xref = pos + i - 4;
+ status = 1;
+ } else if (byte == "xref"[inside_index]) {
+ inside_index++;
+ } else {
+ --i;
+ status = 0;
+ }
+ break;
+ case 9:
+ if (byte == '\r' || byte == '\n') {
+ status = 0;
+ }
+ break;
+ case 10:
+ if (byte == ')') {
+ if (depth > 0) {
+ depth--;
+ }
+ } else if (byte == '(') {
+ depth++;
+ }
+ if (!depth) {
+ status = 0;
+ }
+ break;
+ case 11:
+ if (byte == '<' && inside_index == 1) {
+ status = 12;
+ } else if (byte == '>') {
+ status = 0;
+ }
+ inside_index = 0;
+ break;
+ case 12:
+ --i;
+ status = 0;
+ break;
+ case 13:
+ if (PDF_CharType[byte] == 'D' || PDF_CharType[byte] == 'W') {
+ --i;
+ status = 0;
+ }
+ break;
+ case 14:
+ if (PDF_CharType[byte] == 'W') {
+ status = 0;
+ } else if (byte == '%' || byte == '(' || byte == '<' ||
+ byte == '\\') {
+ status = 0;
+ --i;
+ } else if (inside_index == 6) {
+ status = 0;
+ --i;
+ } else if (byte == "endobj"[inside_index]) {
+ inside_index++;
+ }
+ break;
+ }
+ if (bOverFlow) {
+ size = 0;
+ break;
+ }
+ }
+ pos += size;
+ }
+ if (last_xref != -1 && last_xref > last_obj) {
+ last_trailer = last_xref;
+ } else if (last_trailer == -1 || last_xref < last_obj) {
+ last_trailer = m_Syntax.m_FileLen;
+ }
+ FX_FILESIZE offset = last_trailer - m_Syntax.m_HeaderOffset;
+ void* pResult =
+ FXSYS_bsearch(&offset, m_SortedOffset.GetData(), m_SortedOffset.GetSize(),
+ sizeof(FX_FILESIZE), _CompareFileSize);
+ if (pResult == NULL) {
+ m_SortedOffset.Add(offset);
+ }
+ FX_Free(buffer);
+ return TRUE;
+}
+static FX_DWORD _GetVarInt(const uint8_t* p, int32_t n) {
+ FX_DWORD result = 0;
+ for (int32_t i = 0; i < n; i++) {
+ result = result * 256 + p[i];
+ }
+ return result;
+}
+FX_BOOL CPDF_Parser::LoadCrossRefV5(FX_FILESIZE pos,
+ FX_FILESIZE& prev,
+ FX_BOOL bMainXRef) {
+ CPDF_Stream* pStream =
+ (CPDF_Stream*)ParseIndirectObjectAt(m_pDocument, pos, 0, NULL);
+ if (!pStream) {
+ return FALSE;
+ }
+ if (m_pDocument) {
+ CPDF_Dictionary* pDict = m_pDocument->GetRoot();
+ if (!pDict || pDict->GetObjNum() != pStream->m_ObjNum) {
+ m_pDocument->InsertIndirectObject(pStream->m_ObjNum, pStream);
+ } else {
+ if (pStream->GetType() == PDFOBJ_STREAM) {
+ pStream->Release();
+ }
+ return FALSE;
}
- if (streampos)
- if (!LoadCrossRefV5(streampos, streampos, FALSE)) {
+ }
+ if (pStream->GetType() != PDFOBJ_STREAM) {
+ return FALSE;
+ }
+ prev = pStream->GetDict()->GetInteger(FX_BSTRC("Prev"));
+ int32_t size = pStream->GetDict()->GetInteger(FX_BSTRC("Size"));
+ if (size < 0) {
+ pStream->Release();
+ return FALSE;
+ }
+ if (bMainXRef) {
+ m_pTrailer = (CPDF_Dictionary*)pStream->GetDict()->Clone();
+ m_CrossRef.SetSize(size);
+ if (m_V5Type.SetSize(size)) {
+ FXSYS_memset(m_V5Type.GetData(), 0, size);
+ }
+ } else {
+ m_Trailers.Add((CPDF_Dictionary*)pStream->GetDict()->Clone());
+ }
+ std::vector<std::pair<int32_t, int32_t> > arrIndex;
+ CPDF_Array* pArray = pStream->GetDict()->GetArray(FX_BSTRC("Index"));
+ if (pArray) {
+ FX_DWORD nPairSize = pArray->GetCount() / 2;
+ for (FX_DWORD i = 0; i < nPairSize; i++) {
+ CPDF_Object* pStartNumObj = pArray->GetElement(i * 2);
+ CPDF_Object* pCountObj = pArray->GetElement(i * 2 + 1);
+ if (pStartNumObj && pStartNumObj->GetType() == PDFOBJ_NUMBER &&
+ pCountObj && pCountObj->GetType() == PDFOBJ_NUMBER) {
+ int nStartNum = pStartNumObj->GetInteger();
+ int nCount = pCountObj->GetInteger();
+ if (nStartNum >= 0 && nCount > 0) {
+ arrIndex.push_back(std::make_pair(nStartNum, nCount));
+ }
+ }
+ }
+ }
+ if (arrIndex.size() == 0) {
+ arrIndex.push_back(std::make_pair(0, size));
+ }
+ pArray = pStream->GetDict()->GetArray(FX_BSTRC("W"));
+ if (pArray == NULL) {
+ pStream->Release();
+ return FALSE;
+ }
+ CFX_DWordArray WidthArray;
+ FX_SAFE_DWORD dwAccWidth = 0;
+ for (FX_DWORD i = 0; i < pArray->GetCount(); i++) {
+ WidthArray.Add(pArray->GetInteger(i));
+ dwAccWidth += WidthArray[i];
+ }
+ if (!dwAccWidth.IsValid() || WidthArray.GetSize() < 3) {
+ pStream->Release();
+ return FALSE;
+ }
+ FX_DWORD totalWidth = dwAccWidth.ValueOrDie();
+ CPDF_StreamAcc acc;
+ acc.LoadAllData(pStream);
+ const uint8_t* pData = acc.GetData();
+ FX_DWORD dwTotalSize = acc.GetSize();
+ FX_DWORD segindex = 0;
+ for (FX_DWORD i = 0; i < arrIndex.size(); i++) {
+ int32_t startnum = arrIndex[i].first;
+ if (startnum < 0) {
+ continue;
+ }
+ m_dwXrefStartObjNum =
+ pdfium::base::checked_cast<FX_DWORD, int32_t>(startnum);
+ FX_DWORD count =
+ pdfium::base::checked_cast<FX_DWORD, int32_t>(arrIndex[i].second);
+ FX_SAFE_DWORD dwCaculatedSize = segindex;
+ dwCaculatedSize += count;
+ dwCaculatedSize *= totalWidth;
+ if (!dwCaculatedSize.IsValid() ||
+ dwCaculatedSize.ValueOrDie() > dwTotalSize) {
+ continue;
+ }
+ const uint8_t* segstart = pData + segindex * totalWidth;
+ FX_SAFE_DWORD dwMaxObjNum = startnum;
+ dwMaxObjNum += count;
+ FX_DWORD dwV5Size =
+ pdfium::base::checked_cast<FX_DWORD, int32_t>(m_V5Type.GetSize());
+ if (!dwMaxObjNum.IsValid() || dwMaxObjNum.ValueOrDie() > dwV5Size) {
+ continue;
+ }
+ for (FX_DWORD j = 0; j < count; j++) {
+ int32_t type = 1;
+ const uint8_t* entrystart = segstart + j * totalWidth;
+ if (WidthArray[0]) {
+ type = _GetVarInt(entrystart, WidthArray[0]);
+ }
+ if (m_V5Type[startnum + j] == 255) {
+ FX_FILESIZE offset =
+ _GetVarInt(entrystart + WidthArray[0], WidthArray[1]);
+ m_CrossRef[startnum + j] = offset;
+ void* pResult = FXSYS_bsearch(&offset, m_SortedOffset.GetData(),
+ m_SortedOffset.GetSize(),
+ sizeof(FX_FILESIZE), _CompareFileSize);
+ if (pResult == NULL) {
+ m_SortedOffset.Add(offset);
+ }
+ continue;
+ }
+ if (m_V5Type[startnum + j]) {
+ continue;
+ }
+ m_V5Type[startnum + j] = type;
+ if (type == 0) {
+ m_CrossRef[startnum + j] = 0;
+ } else {
+ FX_FILESIZE offset =
+ _GetVarInt(entrystart + WidthArray[0], WidthArray[1]);
+ m_CrossRef[startnum + j] = offset;
+ if (type == 1) {
+ void* pResult = FXSYS_bsearch(&offset, m_SortedOffset.GetData(),
+ m_SortedOffset.GetSize(),
+ sizeof(FX_FILESIZE), _CompareFileSize);
+ if (pResult == NULL) {
+ m_SortedOffset.Add(offset);
+ }
+ } else {
+ if (offset < 0 || offset >= m_V5Type.GetSize()) {
+ pStream->Release();
return FALSE;
+ }
+ m_V5Type[offset] = 255;
}
+ }
+ }
+ segindex += count;
+ }
+ pStream->Release();
+ return TRUE;
+}
+CPDF_Array* CPDF_Parser::GetIDArray() {
+ CPDF_Object* pID = m_pTrailer ? m_pTrailer->GetElement(FX_BSTRC("ID")) : NULL;
+ if (pID == NULL) {
+ return NULL;
+ }
+ if (pID->GetType() == PDFOBJ_REFERENCE) {
+ pID = ParseIndirectObject(NULL, ((CPDF_Reference*)pID)->GetRefObjNum());
+ m_pTrailer->SetAt(FX_BSTRC("ID"), pID);
+ }
+ if (pID == NULL || pID->GetType() != PDFOBJ_ARRAY) {
+ return NULL;
+ }
+ return (CPDF_Array*)pID;
+}
+FX_DWORD CPDF_Parser::GetRootObjNum() {
+ CPDF_Object* pRef =
+ m_pTrailer ? m_pTrailer->GetElement(FX_BSTRC("Root")) : NULL;
+ if (pRef == NULL || pRef->GetType() != PDFOBJ_REFERENCE) {
+ return 0;
+ }
+ return ((CPDF_Reference*)pRef)->GetRefObjNum();
+}
+FX_DWORD CPDF_Parser::GetInfoObjNum() {
+ CPDF_Object* pRef =
+ m_pTrailer ? m_pTrailer->GetElement(FX_BSTRC("Info")) : NULL;
+ if (pRef == NULL || pRef->GetType() != PDFOBJ_REFERENCE) {
+ return 0;
+ }
+ return ((CPDF_Reference*)pRef)->GetRefObjNum();
+}
+FX_BOOL CPDF_Parser::IsFormStream(FX_DWORD objnum, FX_BOOL& bForm) {
+ bForm = FALSE;
+ if (objnum >= (FX_DWORD)m_CrossRef.GetSize()) {
+ return TRUE;
+ }
+ if (m_V5Type[objnum] == 0) {
+ return TRUE;
+ }
+ if (m_V5Type[objnum] == 2) {
+ return TRUE;
+ }
+ FX_FILESIZE pos = m_CrossRef[objnum];
+ void* pResult =
+ FXSYS_bsearch(&pos, m_SortedOffset.GetData(), m_SortedOffset.GetSize(),
+ sizeof(FX_FILESIZE), _CompareFileSize);
+ if (pResult == NULL) {
return TRUE;
+ }
+ if ((FX_FILESIZE*)pResult - (FX_FILESIZE*)m_SortedOffset.GetData() ==
+ m_SortedOffset.GetSize() - 1) {
+ return FALSE;
+ }
+ FX_FILESIZE size = ((FX_FILESIZE*)pResult)[1] - pos;
+ FX_FILESIZE SavedPos = m_Syntax.SavePos();
+ m_Syntax.RestorePos(pos);
+ bForm = m_Syntax.SearchMultiWord(FX_BSTRC("/Form\0stream"), TRUE, size) == 0;
+ m_Syntax.RestorePos(SavedPos);
+ return TRUE;
}
-FX_BOOL CPDF_Parser::LoadAllCrossRefV5(FX_FILESIZE xrefpos)
-{
- if (!LoadCrossRefV5(xrefpos, xrefpos, TRUE)) {
- return FALSE;
+CPDF_Object* CPDF_Parser::ParseIndirectObject(CPDF_IndirectObjects* pObjList,
+ FX_DWORD objnum,
+ PARSE_CONTEXT* pContext) {
+ if (objnum >= (FX_DWORD)m_CrossRef.GetSize()) {
+ return NULL;
+ }
+ if (m_V5Type[objnum] == 1 || m_V5Type[objnum] == 255) {
+ FX_FILESIZE pos = m_CrossRef[objnum];
+ if (pos <= 0) {
+ return NULL;
+ }
+ return ParseIndirectObjectAt(pObjList, pos, objnum, pContext);
+ }
+ if (m_V5Type[objnum] == 2) {
+ CPDF_StreamAcc* pObjStream = GetObjectStream((FX_DWORD)m_CrossRef[objnum]);
+ if (pObjStream == NULL) {
+ return NULL;
+ }
+ int32_t n = pObjStream->GetDict()->GetInteger(FX_BSTRC("N"));
+ int32_t offset = pObjStream->GetDict()->GetInteger(FX_BSTRC("First"));
+ CPDF_SyntaxParser syntax;
+ CFX_SmartPointer<IFX_FileStream> file(FX_CreateMemoryStream(
+ (uint8_t*)pObjStream->GetData(), (size_t)pObjStream->GetSize(), FALSE));
+ syntax.InitParser(file.Get(), 0);
+ CPDF_Object* pRet = NULL;
+ while (n) {
+ FX_DWORD thisnum = syntax.GetDirectNum();
+ FX_DWORD thisoff = syntax.GetDirectNum();
+ if (thisnum == objnum) {
+ syntax.RestorePos(offset + thisoff);
+ pRet = syntax.GetObject(pObjList, 0, 0, pContext);
+ break;
+ }
+ n--;
}
- while (xrefpos)
- if (!LoadCrossRefV5(xrefpos, xrefpos, FALSE)) {
- return FALSE;
- }
- m_ObjectStreamMap.InitHashTable(101, FALSE);
- m_bXRefStream = TRUE;
- return TRUE;
+ return pRet;
+ }
+ return NULL;
}
-FX_BOOL CPDF_Parser::RebuildCrossRef()
-{
- m_CrossRef.RemoveAll();
- m_V5Type.RemoveAll();
- m_SortedOffset.RemoveAll();
- m_ObjVersion.RemoveAll();
- if (m_pTrailer) {
- m_pTrailer->Release();
- m_pTrailer = NULL;
- }
- int32_t status = 0;
- int32_t inside_index = 0;
- FX_DWORD objnum = 0, gennum = 0;
- int32_t depth = 0;
- uint8_t* buffer = FX_Alloc(uint8_t, 4096);
- FX_FILESIZE pos = m_Syntax.m_HeaderOffset;
- FX_FILESIZE start_pos = 0, start_pos1 = 0;
- FX_FILESIZE last_obj = -1, last_xref = -1, last_trailer = -1;
- while (pos < m_Syntax.m_FileLen) {
- FX_BOOL bOverFlow = FALSE;
- FX_DWORD size = (FX_DWORD)(m_Syntax.m_FileLen - pos);
- if (size > 4096) {
- size = 4096;
- }
- if (!m_Syntax.m_pFileAccess->ReadBlock(buffer, pos, size)) {
- break;
- }
- for (FX_DWORD i = 0; i < size; i ++) {
- uint8_t byte = buffer[i];
- switch (status) {
- case 0:
- if (PDF_CharType[byte] == 'W') {
- status = 1;
- }
- if (byte <= '9' && byte >= '0') {
- --i;
- status = 1;
- }
- if (byte == '%') {
- inside_index = 0;
- status = 9;
- }
- if (byte == '(') {
- status = 10;
- depth = 1;
- }
- if (byte == '<') {
- inside_index = 1;
- status = 11;
- }
- if (byte == '\\') {
- status = 13;
- }
- if (byte == 't') {
- status = 7;
- inside_index = 1;
- }
- break;
- case 1:
- if (PDF_CharType[byte] == 'W') {
- break;
- } else if (byte <= '9' && byte >= '0') {
- start_pos = pos + i;
- status = 2;
- objnum = byte - '0';
- } else if (byte == 't') {
- status = 7;
- inside_index = 1;
- } else if (byte == 'x') {
- status = 8;
- inside_index = 1;
- } else {
- --i;
- status = 0;
- }
- break;
- case 2:
- if (byte <= '9' && byte >= '0') {
- objnum = objnum * 10 + byte - '0';
- break;
- } else if (PDF_CharType[byte] == 'W') {
- status = 3;
- } else {
- --i;
- status = 14;
- inside_index = 0;
- }
- break;
- case 3:
- if (byte <= '9' && byte >= '0') {
- start_pos1 = pos + i;
- status = 4;
- gennum = byte - '0';
- } else if (PDF_CharType[byte] == 'W') {
- break;
- } else if (byte == 't') {
- status = 7;
- inside_index = 1;
- } else {
- --i;
- status = 0;
- }
- break;
- case 4:
- if (byte <= '9' && byte >= '0') {
- gennum = gennum * 10 + byte - '0';
- break;
- } else if (PDF_CharType[byte] == 'W') {
- status = 5;
- } else {
- --i;
- status = 0;
- }
- break;
- case 5:
- if (byte == 'o') {
- status = 6;
- inside_index = 1;
- } else if (PDF_CharType[byte] == 'W') {
- break;
- } else if (byte <= '9' && byte >= '0') {
- objnum = gennum;
- gennum = byte - '0';
- start_pos = start_pos1;
- start_pos1 = pos + i;
- status = 4;
- } else if (byte == 't') {
- status = 7;
- inside_index = 1;
- } else {
- --i;
- status = 0;
- }
- break;
- case 6:
- switch (inside_index) {
- case 1:
- if (byte != 'b') {
- --i;
- status = 0;
- } else {
- inside_index ++;
- }
- break;
- case 2:
- if (byte != 'j') {
- --i;
- status = 0;
- } else {
- inside_index ++;
- }
- break;
- case 3:
- if (PDF_CharType[byte] == 'W' || PDF_CharType[byte] == 'D') {
- if (objnum > 0x1000000) {
- status = 0;
- break;
- }
- FX_FILESIZE obj_pos = start_pos - m_Syntax.m_HeaderOffset;
- last_obj = start_pos;
- void* pResult = FXSYS_bsearch(&obj_pos, m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize);
- if (pResult == NULL) {
- m_SortedOffset.Add(obj_pos);
- }
- FX_FILESIZE obj_end = 0;
- CPDF_Object *pObject = ParseIndirectObjectAtByStrict(m_pDocument, obj_pos, objnum, NULL, &obj_end);
- if (pObject) {
- int iType = pObject->GetType();
- if (iType == PDFOBJ_STREAM) {
- CPDF_Stream* pStream = (CPDF_Stream*)pObject;
- CPDF_Dictionary* pDict = pStream->GetDict();
- if (pDict) {
- if (pDict->KeyExist(FX_BSTRC("Type"))) {
- CFX_ByteString bsValue = pDict->GetString(FX_BSTRC("Type"));
- if (bsValue == FX_BSTRC("XRef") && pDict->KeyExist(FX_BSTRC("Size"))) {
- CPDF_Object* pRoot = pDict->GetElement(FX_BSTRC("Root"));
- if (pRoot && pRoot->GetDict() && pRoot->GetDict()->GetElement(FX_BSTRC("Pages"))) {
- if (m_pTrailer) {
- m_pTrailer->Release();
- }
- m_pTrailer = (CPDF_Dictionary*)pDict->Clone();
- }
- }
- }
- }
- }
- }
- FX_FILESIZE offset = 0;
- m_Syntax.RestorePos(obj_pos);
- offset = m_Syntax.FindTag(FX_BSTRC("obj"), 0);
- if (offset == -1) {
- offset = 0;
- } else {
- offset += 3;
- }
- FX_FILESIZE nLen = obj_end - obj_pos - offset;
- if ((FX_DWORD)nLen > size - i) {
- pos = obj_end + m_Syntax.m_HeaderOffset;
- bOverFlow = TRUE;
- } else {
- i += (FX_DWORD)nLen;
- }
- if (m_CrossRef.GetSize() > (int32_t)objnum && m_CrossRef[objnum]) {
- if (pObject) {
- FX_DWORD oldgen = m_ObjVersion.GetAt(objnum);
- m_CrossRef[objnum] = obj_pos;
- m_ObjVersion.SetAt(objnum, (int16_t)gennum);
- if (oldgen != gennum) {
- m_bVersionUpdated = TRUE;
- }
- }
- } else {
- m_CrossRef.SetAtGrow(objnum, obj_pos);
- m_V5Type.SetAtGrow(objnum, 1);
- m_ObjVersion.SetAtGrow(objnum, (int16_t)gennum);
- }
- if (pObject) {
- pObject->Release();
- }
- }
- --i;
- status = 0;
- break;
- }
- break;
- case 7:
- if (inside_index == 7) {
- if (PDF_CharType[byte] == 'W' || PDF_CharType[byte] == 'D') {
- last_trailer = pos + i - 7;
- m_Syntax.RestorePos(pos + i - m_Syntax.m_HeaderOffset);
- CPDF_Object* pObj = m_Syntax.GetObject(m_pDocument, 0, 0, 0);
- if (pObj) {
- if (pObj->GetType() != PDFOBJ_DICTIONARY && pObj->GetType() != PDFOBJ_STREAM) {
- pObj->Release();
- } else {
- CPDF_Dictionary* pTrailer = NULL;
- if (pObj->GetType() == PDFOBJ_STREAM) {
- pTrailer = ((CPDF_Stream*)pObj)->GetDict();
- } else {
- pTrailer = (CPDF_Dictionary*)pObj;
- }
- if (pTrailer) {
- if (m_pTrailer) {
- CPDF_Object* pRoot = pTrailer->GetElement(FX_BSTRC("Root"));
- if (pRoot == NULL || (pRoot->GetType() == PDFOBJ_REFERENCE &&
- (FX_DWORD)m_CrossRef.GetSize() > ((CPDF_Reference*)pRoot)->GetRefObjNum() &&
- m_CrossRef.GetAt(((CPDF_Reference*)pRoot)->GetRefObjNum()) != 0)) {
- FX_POSITION pos = pTrailer->GetStartPos();
- while (pos) {
- CFX_ByteString key;
- CPDF_Object* pObj = pTrailer->GetNextElement(pos, key);
- m_pTrailer->SetAt(key, pObj->Clone(), m_pDocument);
- }
- pObj->Release();
- } else {
- pObj->Release();
- }
- } else {
- if (pObj->GetType() == PDFOBJ_STREAM) {
- m_pTrailer = (CPDF_Dictionary*)pTrailer->Clone();
- pObj->Release();
- } else {
- m_pTrailer = pTrailer;
- }
- FX_FILESIZE dwSavePos = m_Syntax.SavePos();
- CFX_ByteString strWord = m_Syntax.GetKeyword();
- if (!strWord.Compare(FX_BSTRC("startxref"))) {
- FX_BOOL bNumber = FALSE;
- CFX_ByteString bsOffset = m_Syntax.GetNextWord(bNumber);
- if (bNumber) {
- m_LastXRefOffset = FXSYS_atoi(bsOffset);
- }
- }
- m_Syntax.RestorePos(dwSavePos);
- }
- } else {
- pObj->Release();
- }
- }
- }
- }
- --i;
- status = 0;
- } else if (byte == "trailer"[inside_index]) {
- inside_index ++;
- } else {
- --i;
- status = 0;
- }
- break;
- case 8:
- if (inside_index == 4) {
- last_xref = pos + i - 4;
- status = 1;
- } else if (byte == "xref"[inside_index]) {
- inside_index ++;
- } else {
- --i;
- status = 0;
- }
- break;
- case 9:
- if (byte == '\r' || byte == '\n') {
- status = 0;
- }
- break;
- case 10:
- if (byte == ')') {
- if (depth > 0) {
- depth--;
- }
- } else if (byte == '(') {
- depth++;
- }
- if (!depth) {
- status = 0;
- }
- break;
- case 11:
- if (byte == '<' && inside_index == 1) {
- status = 12;
- } else if (byte == '>') {
- status = 0;
- }
- inside_index = 0;
- break;
- case 12:
- --i;
- status = 0;
- break;
- case 13:
- if (PDF_CharType[byte] == 'D' || PDF_CharType[byte] == 'W') {
- --i;
- status = 0;
- }
- break;
- case 14:
- if (PDF_CharType[byte] == 'W') {
- status = 0;
- } else if (byte == '%' || byte == '(' || byte == '<' || byte == '\\') {
- status = 0;
- --i;
- } else if (inside_index == 6) {
- status = 0;
- --i;
- } else if (byte == "endobj"[inside_index]) {
- inside_index++;
- }
- break;
- }
- if (bOverFlow) {
- size = 0;
- break;
- }
- }
- pos += size;
- }
- if (last_xref != -1 && last_xref > last_obj) {
- last_trailer = last_xref;
- } else if (last_trailer == -1 || last_xref < last_obj) {
- last_trailer = m_Syntax.m_FileLen;
- }
- FX_FILESIZE offset = last_trailer - m_Syntax.m_HeaderOffset;
- void* pResult = FXSYS_bsearch(&offset, m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize);
+CPDF_StreamAcc* CPDF_Parser::GetObjectStream(FX_DWORD objnum) {
+ CPDF_StreamAcc* pStreamAcc = NULL;
+ if (m_ObjectStreamMap.Lookup((void*)(uintptr_t)objnum, (void*&)pStreamAcc)) {
+ return pStreamAcc;
+ }
+ const CPDF_Stream* pStream =
+ m_pDocument ? (CPDF_Stream*)m_pDocument->GetIndirectObject(objnum) : NULL;
+ if (pStream == NULL || pStream->GetType() != PDFOBJ_STREAM) {
+ return NULL;
+ }
+ pStreamAcc = new CPDF_StreamAcc;
+ pStreamAcc->LoadAllData(pStream);
+ m_ObjectStreamMap.SetAt((void*)(uintptr_t)objnum, pStreamAcc);
+ return pStreamAcc;
+}
+FX_FILESIZE CPDF_Parser::GetObjectSize(FX_DWORD objnum) {
+ if (objnum >= (FX_DWORD)m_CrossRef.GetSize()) {
+ return 0;
+ }
+ if (m_V5Type[objnum] == 2) {
+ objnum = (FX_DWORD)m_CrossRef[objnum];
+ }
+ if (m_V5Type[objnum] == 1 || m_V5Type[objnum] == 255) {
+ FX_FILESIZE offset = m_CrossRef[objnum];
+ if (offset == 0) {
+ return 0;
+ }
+ void* pResult = FXSYS_bsearch(&offset, m_SortedOffset.GetData(),
+ m_SortedOffset.GetSize(), sizeof(FX_FILESIZE),
+ _CompareFileSize);
if (pResult == NULL) {
- m_SortedOffset.Add(offset);
+ return 0;
}
- FX_Free(buffer);
- return TRUE;
-}
-static FX_DWORD _GetVarInt(const uint8_t* p, int32_t n)
-{
- FX_DWORD result = 0;
- for (int32_t i = 0; i < n; i ++) {
- result = result * 256 + p[i];
+ if ((FX_FILESIZE*)pResult - (FX_FILESIZE*)m_SortedOffset.GetData() ==
+ m_SortedOffset.GetSize() - 1) {
+ return 0;
}
- return result;
+ return ((FX_FILESIZE*)pResult)[1] - offset;
+ }
+ return 0;
}
-FX_BOOL CPDF_Parser::LoadCrossRefV5(FX_FILESIZE pos, FX_FILESIZE& prev, FX_BOOL bMainXRef)
-{
- CPDF_Stream* pStream = (CPDF_Stream*)ParseIndirectObjectAt(m_pDocument, pos, 0, NULL);
- if (!pStream) {
- return FALSE;
- }
- if (m_pDocument) {
- CPDF_Dictionary * pDict = m_pDocument->GetRoot();
- if (!pDict || pDict->GetObjNum() != pStream->m_ObjNum) {
- m_pDocument->InsertIndirectObject(pStream->m_ObjNum, pStream);
+void CPDF_Parser::GetIndirectBinary(FX_DWORD objnum,
+ uint8_t*& pBuffer,
+ FX_DWORD& size) {
+ pBuffer = NULL;
+ size = 0;
+ if (objnum >= (FX_DWORD)m_CrossRef.GetSize()) {
+ return;
+ }
+ if (m_V5Type[objnum] == 2) {
+ CPDF_StreamAcc* pObjStream = GetObjectStream((FX_DWORD)m_CrossRef[objnum]);
+ if (pObjStream == NULL) {
+ return;
+ }
+ int32_t n = pObjStream->GetDict()->GetInteger(FX_BSTRC("N"));
+ int32_t offset = pObjStream->GetDict()->GetInteger(FX_BSTRC("First"));
+ CPDF_SyntaxParser syntax;
+ const uint8_t* pData = pObjStream->GetData();
+ FX_DWORD totalsize = pObjStream->GetSize();
+ CFX_SmartPointer<IFX_FileStream> file(
+ FX_CreateMemoryStream((uint8_t*)pData, (size_t)totalsize, FALSE));
+ syntax.InitParser(file.Get(), 0);
+ while (n) {
+ FX_DWORD thisnum = syntax.GetDirectNum();
+ FX_DWORD thisoff = syntax.GetDirectNum();
+ if (thisnum == objnum) {
+ if (n == 1) {
+ size = totalsize - (thisoff + offset);
} else {
- if (pStream->GetType() == PDFOBJ_STREAM) {
- pStream->Release();
- }
- return FALSE;
+ syntax.GetDirectNum(); // Skip nextnum.
+ FX_DWORD nextoff = syntax.GetDirectNum();
+ size = nextoff - thisoff;
}
+ pBuffer = FX_Alloc(uint8_t, size);
+ FXSYS_memcpy(pBuffer, pData + thisoff + offset, size);
+ return;
+ }
+ n--;
}
- if (pStream->GetType() != PDFOBJ_STREAM) {
- return FALSE;
- }
- prev = pStream->GetDict()->GetInteger(FX_BSTRC("Prev"));
- int32_t size = pStream->GetDict()->GetInteger(FX_BSTRC("Size"));
- if (size < 0) {
- pStream->Release();
- return FALSE;
- }
- if (bMainXRef) {
- m_pTrailer = (CPDF_Dictionary*)pStream->GetDict()->Clone();
- m_CrossRef.SetSize(size);
- if (m_V5Type.SetSize(size)) {
- FXSYS_memset(m_V5Type.GetData(), 0, size);
- }
- } else {
- m_Trailers.Add((CPDF_Dictionary*)pStream->GetDict()->Clone());
- }
- std::vector<std::pair<int32_t, int32_t> > arrIndex;
- CPDF_Array* pArray = pStream->GetDict()->GetArray(FX_BSTRC("Index"));
- if (pArray) {
- FX_DWORD nPairSize = pArray->GetCount() / 2;
- for (FX_DWORD i = 0; i < nPairSize; i++) {
- CPDF_Object* pStartNumObj = pArray->GetElement(i * 2);
- CPDF_Object* pCountObj = pArray->GetElement(i * 2 + 1);
- if (pStartNumObj && pStartNumObj->GetType() == PDFOBJ_NUMBER
- && pCountObj && pCountObj->GetType() == PDFOBJ_NUMBER) {
- int nStartNum = pStartNumObj->GetInteger();
- int nCount = pCountObj->GetInteger();
- if (nStartNum >= 0 && nCount > 0) {
- arrIndex.push_back(std::make_pair(nStartNum, nCount));
- }
- }
- }
+ return;
+ }
+ if (m_V5Type[objnum] == 1) {
+ FX_FILESIZE pos = m_CrossRef[objnum];
+ if (pos == 0) {
+ return;
}
- if (arrIndex.size() == 0) {
- arrIndex.push_back(std::make_pair(0, size));
+ FX_FILESIZE SavedPos = m_Syntax.SavePos();
+ m_Syntax.RestorePos(pos);
+ FX_BOOL bIsNumber;
+ CFX_ByteString word = m_Syntax.GetNextWord(bIsNumber);
+ if (!bIsNumber) {
+ m_Syntax.RestorePos(SavedPos);
+ return;
}
- pArray = pStream->GetDict()->GetArray(FX_BSTRC("W"));
- if (pArray == NULL) {
- pStream->Release();
- return FALSE;
+ FX_DWORD parser_objnum = FXSYS_atoi(word);
+ if (parser_objnum && parser_objnum != objnum) {
+ m_Syntax.RestorePos(SavedPos);
+ return;
}
- CFX_DWordArray WidthArray;
- FX_SAFE_DWORD dwAccWidth = 0;
- for (FX_DWORD i = 0; i < pArray->GetCount(); i ++) {
- WidthArray.Add(pArray->GetInteger(i));
- dwAccWidth += WidthArray[i];
+ word = m_Syntax.GetNextWord(bIsNumber);
+ if (!bIsNumber) {
+ m_Syntax.RestorePos(SavedPos);
+ return;
}
- if (!dwAccWidth.IsValid() || WidthArray.GetSize() < 3) {
- pStream->Release();
- return FALSE;
+ if (m_Syntax.GetKeyword() != FX_BSTRC("obj")) {
+ m_Syntax.RestorePos(SavedPos);
+ return;
}
- FX_DWORD totalWidth = dwAccWidth.ValueOrDie();
- CPDF_StreamAcc acc;
- acc.LoadAllData(pStream);
- const uint8_t* pData = acc.GetData();
- FX_DWORD dwTotalSize = acc.GetSize();
- FX_DWORD segindex = 0;
- for (FX_DWORD i = 0; i < arrIndex.size(); i ++) {
- int32_t startnum = arrIndex[i].first;
- if (startnum < 0) {
- continue;
- }
- m_dwXrefStartObjNum = pdfium::base::checked_cast<FX_DWORD, int32_t> (startnum);
- FX_DWORD count = pdfium::base::checked_cast<FX_DWORD, int32_t> (arrIndex[i].second);
- FX_SAFE_DWORD dwCaculatedSize = segindex;
- dwCaculatedSize += count;
- dwCaculatedSize *= totalWidth;
- if (!dwCaculatedSize.IsValid() || dwCaculatedSize.ValueOrDie() > dwTotalSize) {
- continue;
+ void* pResult =
+ FXSYS_bsearch(&pos, m_SortedOffset.GetData(), m_SortedOffset.GetSize(),
+ sizeof(FX_FILESIZE), _CompareFileSize);
+ if (pResult == NULL) {
+ m_Syntax.RestorePos(SavedPos);
+ return;
+ }
+ FX_FILESIZE nextoff = ((FX_FILESIZE*)pResult)[1];
+ FX_BOOL bNextOffValid = FALSE;
+ if (nextoff != pos) {
+ m_Syntax.RestorePos(nextoff);
+ word = m_Syntax.GetNextWord(bIsNumber);
+ if (word == FX_BSTRC("xref")) {
+ bNextOffValid = TRUE;
+ } else if (bIsNumber) {
+ word = m_Syntax.GetNextWord(bIsNumber);
+ if (bIsNumber && m_Syntax.GetKeyword() == FX_BSTRC("obj")) {
+ bNextOffValid = TRUE;
}
- const uint8_t* segstart = pData + segindex * totalWidth;
- FX_SAFE_DWORD dwMaxObjNum = startnum;
- dwMaxObjNum += count;
- FX_DWORD dwV5Size = pdfium::base::checked_cast<FX_DWORD, int32_t> (m_V5Type.GetSize());
- if (!dwMaxObjNum.IsValid() || dwMaxObjNum.ValueOrDie() > dwV5Size) {
- continue;
+ }
+ }
+ if (!bNextOffValid) {
+ m_Syntax.RestorePos(pos);
+ while (1) {
+ if (m_Syntax.GetKeyword() == FX_BSTRC("endobj")) {
+ break;
}
- for (FX_DWORD j = 0; j < count; j ++) {
- int32_t type = 1;
- const uint8_t* entrystart = segstart + j * totalWidth;
- if (WidthArray[0]) {
- type = _GetVarInt(entrystart, WidthArray[0]);
- }
- if (m_V5Type[startnum + j] == 255) {
- FX_FILESIZE offset = _GetVarInt(entrystart + WidthArray[0], WidthArray[1]);
- m_CrossRef[startnum + j] = offset;
- void* pResult = FXSYS_bsearch(&offset, m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize);
- if (pResult == NULL) {
- m_SortedOffset.Add(offset);
- }
- continue;
- }
- if (m_V5Type[startnum + j]) {
- continue;
- }
- m_V5Type[startnum + j] = type;
- if (type == 0) {
- m_CrossRef[startnum + j] = 0;
- } else {
- FX_FILESIZE offset = _GetVarInt(entrystart + WidthArray[0], WidthArray[1]);
- m_CrossRef[startnum + j] = offset;
- if (type == 1) {
- void* pResult = FXSYS_bsearch(&offset, m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize);
- if (pResult == NULL) {
- m_SortedOffset.Add(offset);
- }
- } else {
- if (offset < 0 || offset >= m_V5Type.GetSize()) {
- pStream->Release();
- return FALSE;
- }
- m_V5Type[offset] = 255;
- }
- }
+ if (m_Syntax.SavePos() == m_Syntax.m_FileLen) {
+ break;
}
- segindex += count;
+ }
+ nextoff = m_Syntax.SavePos();
}
- pStream->Release();
- return TRUE;
+ size = (FX_DWORD)(nextoff - pos);
+ pBuffer = FX_Alloc(uint8_t, size);
+ m_Syntax.RestorePos(pos);
+ m_Syntax.ReadBlock(pBuffer, size);
+ m_Syntax.RestorePos(SavedPos);
+ }
}
-CPDF_Array* CPDF_Parser::GetIDArray()
-{
- CPDF_Object* pID = m_pTrailer ? m_pTrailer->GetElement(FX_BSTRC("ID")) : NULL;
- if (pID == NULL) {
- return NULL;
- }
- if (pID->GetType() == PDFOBJ_REFERENCE) {
- pID = ParseIndirectObject(NULL, ((CPDF_Reference*)pID)->GetRefObjNum());
- m_pTrailer->SetAt(FX_BSTRC("ID"), pID);
- }
- if (pID == NULL || pID->GetType() != PDFOBJ_ARRAY) {
- return NULL;
- }
- return (CPDF_Array*)pID;
+CPDF_Object* CPDF_Parser::ParseIndirectObjectAt(CPDF_IndirectObjects* pObjList,
+ FX_FILESIZE pos,
+ FX_DWORD objnum,
+ PARSE_CONTEXT* pContext) {
+ FX_FILESIZE SavedPos = m_Syntax.SavePos();
+ m_Syntax.RestorePos(pos);
+ FX_BOOL bIsNumber;
+ CFX_ByteString word = m_Syntax.GetNextWord(bIsNumber);
+ if (!bIsNumber) {
+ m_Syntax.RestorePos(SavedPos);
+ return NULL;
+ }
+ FX_FILESIZE objOffset = m_Syntax.SavePos();
+ objOffset -= word.GetLength();
+ FX_DWORD parser_objnum = FXSYS_atoi(word);
+ if (objnum && parser_objnum != objnum) {
+ m_Syntax.RestorePos(SavedPos);
+ return NULL;
+ }
+ word = m_Syntax.GetNextWord(bIsNumber);
+ if (!bIsNumber) {
+ m_Syntax.RestorePos(SavedPos);
+ return NULL;
+ }
+ FX_DWORD parser_gennum = FXSYS_atoi(word);
+ if (m_Syntax.GetKeyword() != FX_BSTRC("obj")) {
+ m_Syntax.RestorePos(SavedPos);
+ return NULL;
+ }
+ CPDF_Object* pObj =
+ m_Syntax.GetObject(pObjList, objnum, parser_gennum, pContext);
+ m_Syntax.SavePos();
+ CFX_ByteString bsWord = m_Syntax.GetKeyword();
+ if (bsWord == FX_BSTRC("endobj")) {
+ m_Syntax.SavePos();
+ }
+ m_Syntax.RestorePos(SavedPos);
+ if (pObj) {
+ if (!objnum) {
+ pObj->m_ObjNum = parser_objnum;
+ }
+ pObj->m_GenNum = parser_gennum;
+ }
+ return pObj;
+}
+CPDF_Object* CPDF_Parser::ParseIndirectObjectAtByStrict(
+ CPDF_IndirectObjects* pObjList,
+ FX_FILESIZE pos,
+ FX_DWORD objnum,
+ struct PARSE_CONTEXT* pContext,
+ FX_FILESIZE* pResultPos) {
+ FX_FILESIZE SavedPos = m_Syntax.SavePos();
+ m_Syntax.RestorePos(pos);
+ FX_BOOL bIsNumber;
+ CFX_ByteString word = m_Syntax.GetNextWord(bIsNumber);
+ if (!bIsNumber) {
+ m_Syntax.RestorePos(SavedPos);
+ return NULL;
+ }
+ FX_DWORD parser_objnum = FXSYS_atoi(word);
+ if (objnum && parser_objnum != objnum) {
+ m_Syntax.RestorePos(SavedPos);
+ return NULL;
+ }
+ word = m_Syntax.GetNextWord(bIsNumber);
+ if (!bIsNumber) {
+ m_Syntax.RestorePos(SavedPos);
+ return NULL;
+ }
+ FX_DWORD gennum = FXSYS_atoi(word);
+ if (m_Syntax.GetKeyword() != FX_BSTRC("obj")) {
+ m_Syntax.RestorePos(SavedPos);
+ return NULL;
+ }
+ CPDF_Object* pObj =
+ m_Syntax.GetObjectByStrict(pObjList, objnum, gennum, pContext);
+ if (pResultPos) {
+ *pResultPos = m_Syntax.m_Pos;
+ }
+ m_Syntax.RestorePos(SavedPos);
+ return pObj;
}
-FX_DWORD CPDF_Parser::GetRootObjNum()
-{
- CPDF_Object* pRef = m_pTrailer ? m_pTrailer->GetElement(FX_BSTRC("Root")) : NULL;
- if (pRef == NULL || pRef->GetType() != PDFOBJ_REFERENCE) {
- return 0;
+CPDF_Dictionary* CPDF_Parser::LoadTrailerV4() {
+ if (m_Syntax.GetKeyword() != FX_BSTRC("trailer")) {
+ return NULL;
+ }
+ CPDF_Object* pObj = m_Syntax.GetObject(m_pDocument, 0, 0, 0);
+ if (pObj == NULL || pObj->GetType() != PDFOBJ_DICTIONARY) {
+ if (pObj) {
+ pObj->Release();
}
- return ((CPDF_Reference*) pRef)->GetRefObjNum();
+ return NULL;
+ }
+ return (CPDF_Dictionary*)pObj;
+}
+FX_DWORD CPDF_Parser::GetPermissions(FX_BOOL bCheckRevision) {
+ if (m_pSecurityHandler == NULL) {
+ return (FX_DWORD)-1;
+ }
+ FX_DWORD dwPermission = m_pSecurityHandler->GetPermissions();
+ if (m_pEncryptDict &&
+ m_pEncryptDict->GetString(FX_BSTRC("Filter")) == FX_BSTRC("Standard")) {
+ dwPermission &= 0xFFFFFFFC;
+ dwPermission |= 0xFFFFF0C0;
+ if (bCheckRevision && m_pEncryptDict->GetInteger(FX_BSTRC("R")) == 2) {
+ dwPermission &= 0xFFFFF0FF;
+ }
+ }
+ return dwPermission;
+}
+FX_BOOL CPDF_Parser::IsOwner() {
+ return m_pSecurityHandler == NULL ? TRUE : m_pSecurityHandler->IsOwner();
}
-FX_DWORD CPDF_Parser::GetInfoObjNum()
-{
- CPDF_Object* pRef = m_pTrailer ? m_pTrailer->GetElement(FX_BSTRC("Info")) : NULL;
- if (pRef == NULL || pRef->GetType() != PDFOBJ_REFERENCE) {
- return 0;
+void CPDF_Parser::SetSecurityHandler(CPDF_SecurityHandler* pSecurityHandler,
+ FX_BOOL bForced) {
+ ASSERT(m_pSecurityHandler == NULL);
+ if (!m_bForceUseSecurityHandler) {
+ delete m_pSecurityHandler;
+ m_pSecurityHandler = NULL;
+ }
+ m_bForceUseSecurityHandler = bForced;
+ m_pSecurityHandler = pSecurityHandler;
+ if (m_bForceUseSecurityHandler) {
+ return;
+ }
+ m_Syntax.m_pCryptoHandler = pSecurityHandler->CreateCryptoHandler();
+ m_Syntax.m_pCryptoHandler->Init(NULL, pSecurityHandler);
+}
+FX_BOOL CPDF_Parser::IsLinearizedFile(IFX_FileRead* pFileAccess,
+ FX_DWORD offset) {
+ m_Syntax.InitParser(pFileAccess, offset);
+ m_Syntax.RestorePos(m_Syntax.m_HeaderOffset + 9);
+ FX_FILESIZE SavedPos = m_Syntax.SavePos();
+ FX_BOOL bIsNumber;
+ CFX_ByteString word = m_Syntax.GetNextWord(bIsNumber);
+ if (!bIsNumber) {
+ return FALSE;
+ }
+ FX_DWORD objnum = FXSYS_atoi(word);
+ word = m_Syntax.GetNextWord(bIsNumber);
+ if (!bIsNumber) {
+ return FALSE;
+ }
+ FX_DWORD gennum = FXSYS_atoi(word);
+ if (m_Syntax.GetKeyword() != FX_BSTRC("obj")) {
+ m_Syntax.RestorePos(SavedPos);
+ return FALSE;
+ }
+ m_pLinearized = m_Syntax.GetObject(NULL, objnum, gennum, 0);
+ if (!m_pLinearized) {
+ return FALSE;
+ }
+ if (m_pLinearized->GetDict() &&
+ m_pLinearized->GetDict()->GetElement(FX_BSTRC("Linearized"))) {
+ m_Syntax.GetNextWord(bIsNumber);
+ CPDF_Object* pLen = m_pLinearized->GetDict()->GetElement(FX_BSTRC("L"));
+ if (!pLen) {
+ m_pLinearized->Release();
+ m_pLinearized = NULL;
+ return FALSE;
+ }
+ if (pLen->GetInteger() != (int)pFileAccess->GetSize()) {
+ return FALSE;
+ }
+ CPDF_Object* pNo = m_pLinearized->GetDict()->GetElement(FX_BSTRC("P"));
+ if (pNo && pNo->GetType() == PDFOBJ_NUMBER) {
+ m_dwFirstPageNo = pNo->GetInteger();
+ }
+ CPDF_Object* pTable = m_pLinearized->GetDict()->GetElement(FX_BSTRC("T"));
+ if (pTable && pTable->GetType() == PDFOBJ_NUMBER) {
+ m_LastXRefOffset = pTable->GetInteger();
}
- return ((CPDF_Reference*) pRef)->GetRefObjNum();
+ return TRUE;
+ }
+ m_pLinearized->Release();
+ m_pLinearized = NULL;
+ return FALSE;
}
-FX_BOOL CPDF_Parser::IsFormStream(FX_DWORD objnum, FX_BOOL& bForm)
-{
- bForm = FALSE;
- if (objnum >= (FX_DWORD)m_CrossRef.GetSize()) {
- return TRUE;
+FX_DWORD CPDF_Parser::StartAsynParse(IFX_FileRead* pFileAccess,
+ FX_BOOL bReParse,
+ FX_BOOL bOwnFileRead) {
+ CloseParser(bReParse);
+ m_bXRefStream = FALSE;
+ m_LastXRefOffset = 0;
+ m_bOwnFileRead = bOwnFileRead;
+ int32_t offset = GetHeaderOffset(pFileAccess);
+ if (offset == -1) {
+ return PDFPARSE_ERROR_FORMAT;
+ }
+ if (!IsLinearizedFile(pFileAccess, offset)) {
+ m_Syntax.m_pFileAccess = NULL;
+ return StartParse(pFileAccess, bReParse, bOwnFileRead);
+ }
+ if (!bReParse) {
+ m_pDocument = new CPDF_Document(this);
+ }
+ FX_FILESIZE dwFirstXRefOffset = m_Syntax.SavePos();
+ FX_BOOL bXRefRebuilt = FALSE;
+ FX_BOOL bLoadV4 = FALSE;
+ if (!(bLoadV4 = LoadCrossRefV4(dwFirstXRefOffset, 0, FALSE, FALSE)) &&
+ !LoadCrossRefV5(dwFirstXRefOffset, dwFirstXRefOffset, TRUE)) {
+ if (!RebuildCrossRef()) {
+ return PDFPARSE_ERROR_FORMAT;
+ }
+ bXRefRebuilt = TRUE;
+ m_LastXRefOffset = 0;
+ }
+ if (bLoadV4) {
+ m_pTrailer = LoadTrailerV4();
+ if (m_pTrailer == NULL) {
+ return FALSE;
}
- if (m_V5Type[objnum] == 0) {
- return TRUE;
+ int32_t xrefsize = GetDirectInteger(m_pTrailer, FX_BSTRC("Size"));
+ if (xrefsize > 0) {
+ m_CrossRef.SetSize(xrefsize);
+ m_V5Type.SetSize(xrefsize);
+ }
+ }
+ FX_DWORD dwRet = SetEncryptHandler();
+ if (dwRet != PDFPARSE_ERROR_SUCCESS) {
+ return dwRet;
+ }
+ m_pDocument->LoadAsynDoc(m_pLinearized->GetDict());
+ if (m_pDocument->GetRoot() == NULL || m_pDocument->GetPageCount() == 0) {
+ if (bXRefRebuilt) {
+ return PDFPARSE_ERROR_FORMAT;
}
- if (m_V5Type[objnum] == 2) {
- return TRUE;
+ ReleaseEncryptHandler();
+ if (!RebuildCrossRef()) {
+ return PDFPARSE_ERROR_FORMAT;
}
- FX_FILESIZE pos = m_CrossRef[objnum];
- void* pResult = FXSYS_bsearch(&pos, m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize);
- if (pResult == NULL) {
- return TRUE;
+ dwRet = SetEncryptHandler();
+ if (dwRet != PDFPARSE_ERROR_SUCCESS) {
+ return dwRet;
}
- if ((FX_FILESIZE*)pResult - (FX_FILESIZE*)m_SortedOffset.GetData() == m_SortedOffset.GetSize() - 1) {
- return FALSE;
+ m_pDocument->LoadAsynDoc(m_pLinearized->GetDict());
+ if (m_pDocument->GetRoot() == NULL) {
+ return PDFPARSE_ERROR_FORMAT;
+ }
+ }
+ FXSYS_qsort(m_SortedOffset.GetData(), m_SortedOffset.GetSize(),
+ sizeof(FX_FILESIZE), _CompareFileSize);
+ FX_DWORD RootObjNum = GetRootObjNum();
+ if (RootObjNum == 0) {
+ ReleaseEncryptHandler();
+ RebuildCrossRef();
+ RootObjNum = GetRootObjNum();
+ if (RootObjNum == 0) {
+ return PDFPARSE_ERROR_FORMAT;
}
- FX_FILESIZE size = ((FX_FILESIZE*)pResult)[1] - pos;
- FX_FILESIZE SavedPos = m_Syntax.SavePos();
- m_Syntax.RestorePos(pos);
- bForm = m_Syntax.SearchMultiWord(FX_BSTRC("/Form\0stream"), TRUE, size) == 0;
- m_Syntax.RestorePos(SavedPos);
- return TRUE;
-}
-CPDF_Object* CPDF_Parser::ParseIndirectObject(CPDF_IndirectObjects* pObjList, FX_DWORD objnum, PARSE_CONTEXT* pContext)
-{
- if (objnum >= (FX_DWORD)m_CrossRef.GetSize()) {
- return NULL;
+ dwRet = SetEncryptHandler();
+ if (dwRet != PDFPARSE_ERROR_SUCCESS) {
+ return dwRet;
}
- if (m_V5Type[objnum] == 1 || m_V5Type[objnum] == 255) {
- FX_FILESIZE pos = m_CrossRef[objnum];
- if (pos <= 0) {
- return NULL;
- }
- return ParseIndirectObjectAt(pObjList, pos, objnum, pContext);
+ }
+ if (m_pSecurityHandler && m_pSecurityHandler->IsMetadataEncrypted()) {
+ CPDF_Object* pMetadata =
+ m_pDocument->GetRoot()->GetElement(FX_BSTRC("Metadata"));
+ if (pMetadata && pMetadata->GetType() == PDFOBJ_REFERENCE) {
+ m_Syntax.m_MetadataObjnum = ((CPDF_Reference*)pMetadata)->GetRefObjNum();
}
- if (m_V5Type[objnum] == 2) {
- CPDF_StreamAcc* pObjStream = GetObjectStream((FX_DWORD)m_CrossRef[objnum]);
- if (pObjStream == NULL) {
- return NULL;
- }
- int32_t n = pObjStream->GetDict()->GetInteger(FX_BSTRC("N"));
- int32_t offset = pObjStream->GetDict()->GetInteger(FX_BSTRC("First"));
- CPDF_SyntaxParser syntax;
- CFX_SmartPointer<IFX_FileStream> file(FX_CreateMemoryStream((uint8_t*)pObjStream->GetData(), (size_t)pObjStream->GetSize(), FALSE));
- syntax.InitParser(file.Get(), 0);
- CPDF_Object* pRet = NULL;
- while (n) {
- FX_DWORD thisnum = syntax.GetDirectNum();
- FX_DWORD thisoff = syntax.GetDirectNum();
- if (thisnum == objnum) {
- syntax.RestorePos(offset + thisoff);
- pRet = syntax.GetObject(pObjList, 0, 0, pContext);
- break;
- }
- n --;
- }
- return pRet;
+ }
+ return PDFPARSE_ERROR_SUCCESS;
+}
+FX_BOOL CPDF_Parser::LoadLinearizedAllCrossRefV5(FX_FILESIZE xrefpos) {
+ if (!LoadCrossRefV5(xrefpos, xrefpos, FALSE)) {
+ return FALSE;
+ }
+ while (xrefpos)
+ if (!LoadCrossRefV5(xrefpos, xrefpos, FALSE)) {
+ return FALSE;
}
- return NULL;
+ m_ObjectStreamMap.InitHashTable(101, FALSE);
+ m_bXRefStream = TRUE;
+ return TRUE;
}
-CPDF_StreamAcc* CPDF_Parser::GetObjectStream(FX_DWORD objnum)
-{
- CPDF_StreamAcc* pStreamAcc = NULL;
- if (m_ObjectStreamMap.Lookup((void*)(uintptr_t)objnum, (void*&)pStreamAcc)) {
- return pStreamAcc;
- }
- const CPDF_Stream* pStream = m_pDocument ? (CPDF_Stream*)m_pDocument->GetIndirectObject(objnum) : NULL;
- if (pStream == NULL || pStream->GetType() != PDFOBJ_STREAM) {
- return NULL;
+FX_DWORD CPDF_Parser::LoadLinearizedMainXRefTable() {
+ FX_DWORD dwSaveMetadataObjnum = m_Syntax.m_MetadataObjnum;
+ m_Syntax.m_MetadataObjnum = 0;
+ if (m_pTrailer) {
+ m_pTrailer->Release();
+ m_pTrailer = NULL;
+ }
+ m_Syntax.RestorePos(m_LastXRefOffset - m_Syntax.m_HeaderOffset);
+ uint8_t ch = 0;
+ FX_DWORD dwCount = 0;
+ m_Syntax.GetNextChar(ch);
+ int32_t type = PDF_CharType[ch];
+ while (type == 'W') {
+ ++dwCount;
+ if (m_Syntax.m_FileLen >=
+ (FX_FILESIZE)(m_Syntax.SavePos() + m_Syntax.m_HeaderOffset)) {
+ break;
}
- pStreamAcc = new CPDF_StreamAcc;
- pStreamAcc->LoadAllData(pStream);
- m_ObjectStreamMap.SetAt((void*)(uintptr_t)objnum, pStreamAcc);
- return pStreamAcc;
+ m_Syntax.GetNextChar(ch);
+ type = PDF_CharType[ch];
+ }
+ m_LastXRefOffset += dwCount;
+ FX_POSITION pos = m_ObjectStreamMap.GetStartPosition();
+ while (pos) {
+ void* objnum;
+ CPDF_StreamAcc* pStream;
+ m_ObjectStreamMap.GetNextAssoc(pos, objnum, (void*&)pStream);
+ delete pStream;
+ }
+ m_ObjectStreamMap.RemoveAll();
+ if (!LoadLinearizedAllCrossRefV4(m_LastXRefOffset, m_dwXrefStartObjNum) &&
+ !LoadLinearizedAllCrossRefV5(m_LastXRefOffset)) {
+ m_LastXRefOffset = 0;
+ m_Syntax.m_MetadataObjnum = dwSaveMetadataObjnum;
+ return PDFPARSE_ERROR_FORMAT;
+ }
+ FXSYS_qsort(m_SortedOffset.GetData(), m_SortedOffset.GetSize(),
+ sizeof(FX_FILESIZE), _CompareFileSize);
+ m_Syntax.m_MetadataObjnum = dwSaveMetadataObjnum;
+ return PDFPARSE_ERROR_SUCCESS;
+}
+
+// static
+int CPDF_SyntaxParser::s_CurrentRecursionDepth = 0;
+
+CPDF_SyntaxParser::CPDF_SyntaxParser() {
+ m_pFileAccess = NULL;
+ m_pCryptoHandler = NULL;
+ m_pFileBuf = NULL;
+ m_BufSize = CPDF_ModuleMgr::kFileBufSize;
+ m_pFileBuf = NULL;
+ m_MetadataObjnum = 0;
+ m_dwWordPos = 0;
+ m_bFileStream = FALSE;
+}
+CPDF_SyntaxParser::~CPDF_SyntaxParser() {
+ if (m_pFileBuf) {
+ FX_Free(m_pFileBuf);
+ }
+}
+FX_BOOL CPDF_SyntaxParser::GetCharAt(FX_FILESIZE pos, uint8_t& ch) {
+ FX_FILESIZE save_pos = m_Pos;
+ m_Pos = pos;
+ FX_BOOL ret = GetNextChar(ch);
+ m_Pos = save_pos;
+ return ret;
+}
+FX_BOOL CPDF_SyntaxParser::GetNextChar(uint8_t& ch) {
+ FX_FILESIZE pos = m_Pos + m_HeaderOffset;
+ if (pos >= m_FileLen) {
+ return FALSE;
+ }
+ if (m_BufOffset >= pos || (FX_FILESIZE)(m_BufOffset + m_BufSize) <= pos) {
+ FX_FILESIZE read_pos = pos;
+ FX_DWORD read_size = m_BufSize;
+ if ((FX_FILESIZE)read_size > m_FileLen) {
+ read_size = (FX_DWORD)m_FileLen;
+ }
+ if ((FX_FILESIZE)(read_pos + read_size) > m_FileLen) {
+ if (m_FileLen < (FX_FILESIZE)read_size) {
+ read_pos = 0;
+ read_size = (FX_DWORD)m_FileLen;
+ } else {
+ read_pos = m_FileLen - read_size;
+ }
+ }
+ if (!m_pFileAccess->ReadBlock(m_pFileBuf, read_pos, read_size)) {
+ return FALSE;
+ }
+ m_BufOffset = read_pos;
+ }
+ ch = m_pFileBuf[pos - m_BufOffset];
+ m_Pos++;
+ return TRUE;
+}
+FX_BOOL CPDF_SyntaxParser::GetCharAtBackward(FX_FILESIZE pos, uint8_t& ch) {
+ pos += m_HeaderOffset;
+ if (pos >= m_FileLen) {
+ return FALSE;
+ }
+ if (m_BufOffset >= pos || (FX_FILESIZE)(m_BufOffset + m_BufSize) <= pos) {
+ FX_FILESIZE read_pos;
+ if (pos < (FX_FILESIZE)m_BufSize) {
+ read_pos = 0;
+ } else {
+ read_pos = pos - m_BufSize + 1;
+ }
+ FX_DWORD read_size = m_BufSize;
+ if ((FX_FILESIZE)(read_pos + read_size) > m_FileLen) {
+ if (m_FileLen < (FX_FILESIZE)read_size) {
+ read_pos = 0;
+ read_size = (FX_DWORD)m_FileLen;
+ } else {
+ read_pos = m_FileLen - read_size;
+ }
+ }
+ if (!m_pFileAccess->ReadBlock(m_pFileBuf, read_pos, read_size)) {
+ return FALSE;
+ }
+ m_BufOffset = read_pos;
+ }
+ ch = m_pFileBuf[pos - m_BufOffset];
+ return TRUE;
+}
+FX_BOOL CPDF_SyntaxParser::ReadBlock(uint8_t* pBuf, FX_DWORD size) {
+ if (!m_pFileAccess->ReadBlock(pBuf, m_Pos + m_HeaderOffset, size)) {
+ return FALSE;
+ }
+ m_Pos += size;
+ return TRUE;
}
-FX_FILESIZE CPDF_Parser::GetObjectSize(FX_DWORD objnum)
-{
- if (objnum >= (FX_DWORD)m_CrossRef.GetSize()) {
- return 0;
+#define MAX_WORD_BUFFER 256
+void CPDF_SyntaxParser::GetNextWord() {
+ m_WordSize = 0;
+ m_bIsNumber = TRUE;
+ uint8_t ch;
+ if (!GetNextChar(ch)) {
+ return;
+ }
+ uint8_t type = PDF_CharType[ch];
+ while (1) {
+ while (type == 'W') {
+ if (!GetNextChar(ch)) {
+ return;
+ }
+ type = PDF_CharType[ch];
}
- if (m_V5Type[objnum] == 2) {
- objnum = (FX_DWORD)m_CrossRef[objnum];
+ if (ch != '%') {
+ break;
}
- if (m_V5Type[objnum] == 1 || m_V5Type[objnum] == 255) {
- FX_FILESIZE offset = m_CrossRef[objnum];
- if (offset == 0) {
- return 0;
+ while (1) {
+ if (!GetNextChar(ch)) {
+ return;
+ }
+ if (ch == '\r' || ch == '\n') {
+ break;
+ }
+ }
+ type = PDF_CharType[ch];
+ }
+ if (type == 'D') {
+ m_bIsNumber = FALSE;
+ m_WordBuffer[m_WordSize++] = ch;
+ if (ch == '/') {
+ while (1) {
+ if (!GetNextChar(ch)) {
+ return;
}
- void* pResult = FXSYS_bsearch(&offset, m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize);
- if (pResult == NULL) {
- return 0;
+ type = PDF_CharType[ch];
+ if (type != 'R' && type != 'N') {
+ m_Pos--;
+ return;
}
- if ((FX_FILESIZE*)pResult - (FX_FILESIZE*)m_SortedOffset.GetData() == m_SortedOffset.GetSize() - 1) {
- return 0;
+ if (m_WordSize < MAX_WORD_BUFFER) {
+ m_WordBuffer[m_WordSize++] = ch;
}
- return ((FX_FILESIZE*)pResult)[1] - offset;
- }
- return 0;
-}
-void CPDF_Parser::GetIndirectBinary(FX_DWORD objnum, uint8_t*& pBuffer, FX_DWORD& size)
-{
- pBuffer = NULL;
- size = 0;
- if (objnum >= (FX_DWORD)m_CrossRef.GetSize()) {
+ }
+ } else if (ch == '<') {
+ if (!GetNextChar(ch)) {
return;
- }
- if (m_V5Type[objnum] == 2) {
- CPDF_StreamAcc* pObjStream = GetObjectStream((FX_DWORD)m_CrossRef[objnum]);
- if (pObjStream == NULL) {
- return;
- }
- int32_t n = pObjStream->GetDict()->GetInteger(FX_BSTRC("N"));
- int32_t offset = pObjStream->GetDict()->GetInteger(FX_BSTRC("First"));
- CPDF_SyntaxParser syntax;
- const uint8_t* pData = pObjStream->GetData();
- FX_DWORD totalsize = pObjStream->GetSize();
- CFX_SmartPointer<IFX_FileStream> file(FX_CreateMemoryStream((uint8_t*)pData, (size_t)totalsize, FALSE));
- syntax.InitParser(file.Get(), 0);
- while (n) {
- FX_DWORD thisnum = syntax.GetDirectNum();
- FX_DWORD thisoff = syntax.GetDirectNum();
- if (thisnum == objnum) {
- if (n == 1) {
- size = totalsize - (thisoff + offset);
- } else {
- syntax.GetDirectNum(); // Skip nextnum.
- FX_DWORD nextoff = syntax.GetDirectNum();
- size = nextoff - thisoff;
- }
- pBuffer = FX_Alloc(uint8_t, size);
- FXSYS_memcpy(pBuffer, pData + thisoff + offset, size);
- return;
- }
- n --;
- }
+ }
+ if (ch == '<') {
+ m_WordBuffer[m_WordSize++] = ch;
+ } else {
+ m_Pos--;
+ }
+ } else if (ch == '>') {
+ if (!GetNextChar(ch)) {
return;
+ }
+ if (ch == '>') {
+ m_WordBuffer[m_WordSize++] = ch;
+ } else {
+ m_Pos--;
+ }
}
- if (m_V5Type[objnum] == 1) {
- FX_FILESIZE pos = m_CrossRef[objnum];
- if (pos == 0) {
- return;
- }
- FX_FILESIZE SavedPos = m_Syntax.SavePos();
- m_Syntax.RestorePos(pos);
- FX_BOOL bIsNumber;
- CFX_ByteString word = m_Syntax.GetNextWord(bIsNumber);
- if (!bIsNumber) {
- m_Syntax.RestorePos(SavedPos);
- return;
- }
- FX_DWORD parser_objnum = FXSYS_atoi(word);
- if (parser_objnum && parser_objnum != objnum) {
- m_Syntax.RestorePos(SavedPos);
- return;
- }
- word = m_Syntax.GetNextWord(bIsNumber);
- if (!bIsNumber) {
- m_Syntax.RestorePos(SavedPos);
- return;
- }
- if (m_Syntax.GetKeyword() != FX_BSTRC("obj")) {
- m_Syntax.RestorePos(SavedPos);
- return;
- }
- void* pResult = FXSYS_bsearch(&pos, m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize);
- if (pResult == NULL) {
- m_Syntax.RestorePos(SavedPos);
- return;
- }
- FX_FILESIZE nextoff = ((FX_FILESIZE*)pResult)[1];
- FX_BOOL bNextOffValid = FALSE;
- if (nextoff != pos) {
- m_Syntax.RestorePos(nextoff);
- word = m_Syntax.GetNextWord(bIsNumber);
- if (word == FX_BSTRC("xref")) {
- bNextOffValid = TRUE;
- } else if (bIsNumber) {
- word = m_Syntax.GetNextWord(bIsNumber);
- if (bIsNumber && m_Syntax.GetKeyword() == FX_BSTRC("obj")) {
- bNextOffValid = TRUE;
- }
- }
+ return;
+ }
+ while (1) {
+ if (m_WordSize < MAX_WORD_BUFFER) {
+ m_WordBuffer[m_WordSize++] = ch;
+ }
+ if (type != 'N') {
+ m_bIsNumber = FALSE;
+ }
+ if (!GetNextChar(ch)) {
+ return;
+ }
+ type = PDF_CharType[ch];
+ if (type == 'D' || type == 'W') {
+ m_Pos--;
+ break;
+ }
+ }
+}
+CFX_ByteString CPDF_SyntaxParser::ReadString() {
+ uint8_t ch;
+ if (!GetNextChar(ch)) {
+ return CFX_ByteString();
+ }
+ CFX_ByteTextBuf buf;
+ int32_t parlevel = 0;
+ int32_t status = 0, iEscCode = 0;
+ while (1) {
+ switch (status) {
+ case 0:
+ if (ch == ')') {
+ if (parlevel == 0) {
+ return buf.GetByteString();
+ }
+ parlevel--;
+ buf.AppendChar(')');
+ } else if (ch == '(') {
+ parlevel++;
+ buf.AppendChar('(');
+ } else if (ch == '\\') {
+ status = 1;
+ } else {
+ buf.AppendChar(ch);
+ }
+ break;
+ case 1:
+ if (ch >= '0' && ch <= '7') {
+ iEscCode = ch - '0';
+ status = 2;
+ break;
+ }
+ if (ch == 'n') {
+ buf.AppendChar('\n');
+ } else if (ch == 'r') {
+ buf.AppendChar('\r');
+ } else if (ch == 't') {
+ buf.AppendChar('\t');
+ } else if (ch == 'b') {
+ buf.AppendChar('\b');
+ } else if (ch == 'f') {
+ buf.AppendChar('\f');
+ } else if (ch == '\r') {
+ status = 4;
+ break;
+ } else if (ch == '\n') {
+ } else {
+ buf.AppendChar(ch);
+ }
+ status = 0;
+ break;
+ case 2:
+ if (ch >= '0' && ch <= '7') {
+ iEscCode = iEscCode * 8 + ch - '0';
+ status = 3;
+ } else {
+ buf.AppendChar(iEscCode);
+ status = 0;
+ continue;
+ }
+ break;
+ case 3:
+ if (ch >= '0' && ch <= '7') {
+ iEscCode = iEscCode * 8 + ch - '0';
+ buf.AppendChar(iEscCode);
+ status = 0;
+ } else {
+ buf.AppendChar(iEscCode);
+ status = 0;
+ continue;
}
- if (!bNextOffValid) {
- m_Syntax.RestorePos(pos);
- while (1) {
- if (m_Syntax.GetKeyword() == FX_BSTRC("endobj")) {
- break;
- }
- if (m_Syntax.SavePos() == m_Syntax.m_FileLen) {
- break;
- }
- }
- nextoff = m_Syntax.SavePos();
+ break;
+ case 4:
+ status = 0;
+ if (ch != '\n') {
+ continue;
}
- size = (FX_DWORD)(nextoff - pos);
- pBuffer = FX_Alloc(uint8_t, size);
- m_Syntax.RestorePos(pos);
- m_Syntax.ReadBlock(pBuffer, size);
- m_Syntax.RestorePos(SavedPos);
+ break;
}
-}
-CPDF_Object* CPDF_Parser::ParseIndirectObjectAt(CPDF_IndirectObjects* pObjList, FX_FILESIZE pos, FX_DWORD objnum,
- PARSE_CONTEXT* pContext)
-{
- FX_FILESIZE SavedPos = m_Syntax.SavePos();
- m_Syntax.RestorePos(pos);
- FX_BOOL bIsNumber;
- CFX_ByteString word = m_Syntax.GetNextWord(bIsNumber);
- if (!bIsNumber) {
- m_Syntax.RestorePos(SavedPos);
- return NULL;
+ if (!GetNextChar(ch)) {
+ break;
}
- FX_FILESIZE objOffset = m_Syntax.SavePos();
- objOffset -= word.GetLength();
- FX_DWORD parser_objnum = FXSYS_atoi(word);
- if (objnum && parser_objnum != objnum) {
- m_Syntax.RestorePos(SavedPos);
- return NULL;
+ }
+ GetNextChar(ch);
+ return buf.GetByteString();
+}
+CFX_ByteString CPDF_SyntaxParser::ReadHexString() {
+ uint8_t ch;
+ if (!GetNextChar(ch)) {
+ return CFX_ByteString();
+ }
+ CFX_BinaryBuf buf;
+ FX_BOOL bFirst = TRUE;
+ uint8_t code = 0;
+ while (1) {
+ if (ch == '>') {
+ break;
}
- word = m_Syntax.GetNextWord(bIsNumber);
- if (!bIsNumber) {
- m_Syntax.RestorePos(SavedPos);
- return NULL;
+ if (ch >= '0' && ch <= '9') {
+ if (bFirst) {
+ code = (ch - '0') * 16;
+ } else {
+ code += ch - '0';
+ buf.AppendByte((uint8_t)code);
+ }
+ bFirst = !bFirst;
+ } else if (ch >= 'A' && ch <= 'F') {
+ if (bFirst) {
+ code = (ch - 'A' + 10) * 16;
+ } else {
+ code += ch - 'A' + 10;
+ buf.AppendByte((uint8_t)code);
+ }
+ bFirst = !bFirst;
+ } else if (ch >= 'a' && ch <= 'f') {
+ if (bFirst) {
+ code = (ch - 'a' + 10) * 16;
+ } else {
+ code += ch - 'a' + 10;
+ buf.AppendByte((uint8_t)code);
+ }
+ bFirst = !bFirst;
}
- FX_DWORD parser_gennum = FXSYS_atoi(word);
- if (m_Syntax.GetKeyword() != FX_BSTRC("obj")) {
- m_Syntax.RestorePos(SavedPos);
- return NULL;
+ if (!GetNextChar(ch)) {
+ break;
}
- CPDF_Object* pObj = m_Syntax.GetObject(pObjList, objnum, parser_gennum, pContext);
- m_Syntax.SavePos();
- CFX_ByteString bsWord = m_Syntax.GetKeyword();
- if (bsWord == FX_BSTRC("endobj")) {
- m_Syntax.SavePos();
+ }
+ if (!bFirst) {
+ buf.AppendByte((uint8_t)code);
+ }
+ return buf.GetByteString();
+}
+void CPDF_SyntaxParser::ToNextLine() {
+ uint8_t ch;
+ while (GetNextChar(ch)) {
+ if (ch == '\n') {
+ break;
+ }
+ if (ch == '\r') {
+ GetNextChar(ch);
+ if (ch != '\n') {
+ --m_Pos;
+ }
+ break;
+ }
+ }
+}
+void CPDF_SyntaxParser::ToNextWord() {
+ uint8_t ch;
+ if (!GetNextChar(ch)) {
+ return;
+ }
+ uint8_t type = PDF_CharType[ch];
+ while (1) {
+ while (type == 'W') {
+ m_dwWordPos = m_Pos;
+ if (!GetNextChar(ch)) {
+ return;
+ }
+ type = PDF_CharType[ch];
}
- m_Syntax.RestorePos(SavedPos);
- if (pObj) {
- if (!objnum) {
- pObj->m_ObjNum = parser_objnum;
- }
- pObj->m_GenNum = parser_gennum;
+ if (ch != '%') {
+ break;
}
- return pObj;
+ while (1) {
+ if (!GetNextChar(ch)) {
+ return;
+ }
+ if (ch == '\r' || ch == '\n') {
+ break;
+ }
+ }
+ type = PDF_CharType[ch];
+ }
+ m_Pos--;
}
-CPDF_Object* CPDF_Parser::ParseIndirectObjectAtByStrict(CPDF_IndirectObjects* pObjList, FX_FILESIZE pos, FX_DWORD objnum,
- struct PARSE_CONTEXT* pContext, FX_FILESIZE *pResultPos)
-{
- FX_FILESIZE SavedPos = m_Syntax.SavePos();
- m_Syntax.RestorePos(pos);
- FX_BOOL bIsNumber;
- CFX_ByteString word = m_Syntax.GetNextWord(bIsNumber);
- if (!bIsNumber) {
- m_Syntax.RestorePos(SavedPos);
- return NULL;
+CFX_ByteString CPDF_SyntaxParser::GetNextWord(FX_BOOL& bIsNumber) {
+ GetNextWord();
+ bIsNumber = m_bIsNumber;
+ return CFX_ByteString((const FX_CHAR*)m_WordBuffer, m_WordSize);
+}
+CFX_ByteString CPDF_SyntaxParser::GetKeyword() {
+ GetNextWord();
+ return CFX_ByteString((const FX_CHAR*)m_WordBuffer, m_WordSize);
+}
+CPDF_Object* CPDF_SyntaxParser::GetObject(CPDF_IndirectObjects* pObjList,
+ FX_DWORD objnum,
+ FX_DWORD gennum,
+ PARSE_CONTEXT* pContext,
+ FX_BOOL bDecrypt) {
+ CFX_AutoRestorer<int> restorer(&s_CurrentRecursionDepth);
+ if (++s_CurrentRecursionDepth > kParserMaxRecursionDepth) {
+ return NULL;
+ }
+ FX_FILESIZE SavedPos = m_Pos;
+ FX_BOOL bTypeOnly = pContext && (pContext->m_Flags & PDFPARSE_TYPEONLY);
+ FX_BOOL bIsNumber;
+ CFX_ByteString word = GetNextWord(bIsNumber);
+ if (word.GetLength() == 0) {
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_INVALID;
}
- FX_DWORD parser_objnum = FXSYS_atoi(word);
- if (objnum && parser_objnum != objnum) {
- m_Syntax.RestorePos(SavedPos);
- return NULL;
+ return NULL;
+ }
+ if (bIsNumber) {
+ FX_FILESIZE SavedPos = m_Pos;
+ CFX_ByteString nextword = GetNextWord(bIsNumber);
+ if (bIsNumber) {
+ CFX_ByteString nextword2 = GetNextWord(bIsNumber);
+ if (nextword2 == FX_BSTRC("R")) {
+ FX_DWORD objnum = FXSYS_atoi(word);
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_REFERENCE;
+ }
+ return new CPDF_Reference(pObjList, objnum);
+ }
}
- word = m_Syntax.GetNextWord(bIsNumber);
- if (!bIsNumber) {
- m_Syntax.RestorePos(SavedPos);
- return NULL;
+ m_Pos = SavedPos;
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_NUMBER;
}
- FX_DWORD gennum = FXSYS_atoi(word);
- if (m_Syntax.GetKeyword() != FX_BSTRC("obj")) {
- m_Syntax.RestorePos(SavedPos);
- return NULL;
+ return CPDF_Number::Create(word);
+ }
+ if (word == FX_BSTRC("true") || word == FX_BSTRC("false")) {
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_BOOLEAN;
}
- CPDF_Object* pObj = m_Syntax.GetObjectByStrict(pObjList, objnum, gennum, pContext);
- if (pResultPos) {
- *pResultPos = m_Syntax.m_Pos;
+ return CPDF_Boolean::Create(word == FX_BSTRC("true"));
+ }
+ if (word == FX_BSTRC("null")) {
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_NULL;
}
- m_Syntax.RestorePos(SavedPos);
- return pObj;
-}
-CPDF_Dictionary* CPDF_Parser::LoadTrailerV4()
-{
- if (m_Syntax.GetKeyword() != FX_BSTRC("trailer")) {
- return NULL;
+ return CPDF_Null::Create();
+ }
+ if (word == FX_BSTRC("(")) {
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_STRING;
}
- CPDF_Object* pObj = m_Syntax.GetObject(m_pDocument, 0, 0, 0);
- if (pObj == NULL || pObj->GetType() != PDFOBJ_DICTIONARY) {
- if (pObj) {
- pObj->Release();
- }
- return NULL;
+ CFX_ByteString str = ReadString();
+ if (m_pCryptoHandler && bDecrypt) {
+ m_pCryptoHandler->Decrypt(objnum, gennum, str);
}
- return (CPDF_Dictionary*)pObj;
-}
-FX_DWORD CPDF_Parser::GetPermissions(FX_BOOL bCheckRevision)
-{
- if (m_pSecurityHandler == NULL) {
- return (FX_DWORD) - 1;
- }
- FX_DWORD dwPermission = m_pSecurityHandler->GetPermissions();
- if (m_pEncryptDict && m_pEncryptDict->GetString(FX_BSTRC("Filter")) == FX_BSTRC("Standard")) {
- dwPermission &= 0xFFFFFFFC;
- dwPermission |= 0xFFFFF0C0;
- if(bCheckRevision && m_pEncryptDict->GetInteger(FX_BSTRC("R")) == 2) {
- dwPermission &= 0xFFFFF0FF;
- }
+ return CPDF_String::Create(str, FALSE);
+ }
+ if (word == FX_BSTRC("<")) {
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_STRING;
}
- return dwPermission;
-}
-FX_BOOL CPDF_Parser::IsOwner()
-{
- return m_pSecurityHandler == NULL ? TRUE : m_pSecurityHandler->IsOwner();
-}
-void CPDF_Parser::SetSecurityHandler(CPDF_SecurityHandler* pSecurityHandler, FX_BOOL bForced)
-{
- ASSERT(m_pSecurityHandler == NULL);
- if (!m_bForceUseSecurityHandler) {
- delete m_pSecurityHandler;
- m_pSecurityHandler = NULL;
- }
- m_bForceUseSecurityHandler = bForced;
- m_pSecurityHandler = pSecurityHandler;
- if (m_bForceUseSecurityHandler) {
- return;
+ CFX_ByteString str = ReadHexString();
+ if (m_pCryptoHandler && bDecrypt) {
+ m_pCryptoHandler->Decrypt(objnum, gennum, str);
}
- m_Syntax.m_pCryptoHandler = pSecurityHandler->CreateCryptoHandler();
- m_Syntax.m_pCryptoHandler->Init(NULL, pSecurityHandler);
-}
-FX_BOOL CPDF_Parser::IsLinearizedFile(IFX_FileRead* pFileAccess, FX_DWORD offset)
-{
- m_Syntax.InitParser(pFileAccess, offset);
- m_Syntax.RestorePos(m_Syntax.m_HeaderOffset + 9);
- FX_FILESIZE SavedPos = m_Syntax.SavePos();
- FX_BOOL bIsNumber;
- CFX_ByteString word = m_Syntax.GetNextWord(bIsNumber);
- if (!bIsNumber) {
- return FALSE;
+ return CPDF_String::Create(str, TRUE);
+ }
+ if (word == FX_BSTRC("[")) {
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_ARRAY;
}
- FX_DWORD objnum = FXSYS_atoi(word);
- word = m_Syntax.GetNextWord(bIsNumber);
- if (!bIsNumber) {
- return FALSE;
+ CPDF_Array* pArray = CPDF_Array::Create();
+ while (1) {
+ CPDF_Object* pObj = GetObject(pObjList, objnum, gennum);
+ if (pObj == NULL) {
+ return pArray;
+ }
+ pArray->Add(pObj);
+ }
+ }
+ if (word[0] == '/') {
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_NAME;
}
- FX_DWORD gennum = FXSYS_atoi(word);
- if (m_Syntax.GetKeyword() != FX_BSTRC("obj")) {
- m_Syntax.RestorePos(SavedPos);
- return FALSE;
+ return CPDF_Name::Create(
+ PDF_NameDecode(CFX_ByteStringC(m_WordBuffer + 1, m_WordSize - 1)));
+ }
+ if (word == FX_BSTRC("<<")) {
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_DICTIONARY;
}
- m_pLinearized = m_Syntax.GetObject(NULL, objnum, gennum, 0);
- if (!m_pLinearized) {
- return FALSE;
+ if (pContext) {
+ pContext->m_DictStart = SavedPos;
}
- if (m_pLinearized->GetDict() && m_pLinearized->GetDict()->GetElement(FX_BSTRC("Linearized"))) {
- m_Syntax.GetNextWord(bIsNumber);
- CPDF_Object *pLen = m_pLinearized->GetDict()->GetElement(FX_BSTRC("L"));
- if (!pLen) {
- m_pLinearized->Release();
- m_pLinearized = NULL;
- return FALSE;
- }
- if (pLen->GetInteger() != (int)pFileAccess->GetSize()) {
- return FALSE;
- }
- CPDF_Object *pNo = m_pLinearized->GetDict()->GetElement(FX_BSTRC("P"));
- if (pNo && pNo->GetType() == PDFOBJ_NUMBER) {
- m_dwFirstPageNo = pNo->GetInteger();
- }
- CPDF_Object *pTable = m_pLinearized->GetDict()->GetElement(FX_BSTRC("T"));
- if (pTable && pTable->GetType() == PDFOBJ_NUMBER) {
- m_LastXRefOffset = pTable->GetInteger();
+ CPDF_Dictionary* pDict = CPDF_Dictionary::Create();
+ int32_t nKeys = 0;
+ FX_FILESIZE dwSignValuePos = 0;
+ while (1) {
+ FX_BOOL bIsNumber;
+ CFX_ByteString key = GetNextWord(bIsNumber);
+ if (key.IsEmpty()) {
+ if (pDict)
+ pDict->Release();
+ return NULL;
+ }
+ FX_FILESIZE SavedPos = m_Pos - key.GetLength();
+ if (key == FX_BSTRC(">>")) {
+ break;
+ }
+ if (key == FX_BSTRC("endobj")) {
+ m_Pos = SavedPos;
+ break;
+ }
+ if (key[0] != '/') {
+ continue;
+ }
+ nKeys++;
+ key = PDF_NameDecode(key);
+ if (key == FX_BSTRC("/Contents")) {
+ dwSignValuePos = m_Pos;
+ }
+ CPDF_Object* pObj = GetObject(pObjList, objnum, gennum);
+ if (pObj == NULL) {
+ continue;
+ }
+ if (key.GetLength() >= 1) {
+ if (nKeys < 32) {
+ pDict->SetAt(CFX_ByteStringC(key.c_str() + 1, key.GetLength() - 1),
+ pObj);
+ } else {
+ pDict->AddValue(CFX_ByteStringC(key.c_str() + 1, key.GetLength() - 1),
+ pObj);
}
- return TRUE;
+ }
}
- m_pLinearized->Release();
- m_pLinearized = NULL;
- return FALSE;
-}
-FX_DWORD CPDF_Parser::StartAsynParse(IFX_FileRead* pFileAccess, FX_BOOL bReParse, FX_BOOL bOwnFileRead)
-{
- CloseParser(bReParse);
- m_bXRefStream = FALSE;
- m_LastXRefOffset = 0;
- m_bOwnFileRead = bOwnFileRead;
- int32_t offset = GetHeaderOffset(pFileAccess);
- if (offset == -1) {
- return PDFPARSE_ERROR_FORMAT;
+ if (IsSignatureDict(pDict)) {
+ FX_FILESIZE dwSavePos = m_Pos;
+ m_Pos = dwSignValuePos;
+ CPDF_Object* pObj = GetObject(pObjList, objnum, gennum, NULL, FALSE);
+ pDict->SetAt(FX_BSTRC("Contents"), pObj);
+ m_Pos = dwSavePos;
}
- if (!IsLinearizedFile(pFileAccess, offset)) {
- m_Syntax.m_pFileAccess = NULL;
- return StartParse(pFileAccess, bReParse, bOwnFileRead);
+ if (pContext) {
+ pContext->m_DictEnd = m_Pos;
+ if (pContext->m_Flags & PDFPARSE_NOSTREAM) {
+ return pDict;
+ }
}
- if (!bReParse) {
- m_pDocument = new CPDF_Document(this);
+ FX_FILESIZE SavedPos = m_Pos;
+ FX_BOOL bIsNumber;
+ CFX_ByteString nextword = GetNextWord(bIsNumber);
+ if (nextword == FX_BSTRC("stream")) {
+ CPDF_Stream* pStream = ReadStream(pDict, pContext, objnum, gennum);
+ if (pStream) {
+ return pStream;
+ }
+ if (pDict)
+ pDict->Release();
+ return NULL;
+ } else {
+ m_Pos = SavedPos;
+ return pDict;
}
- FX_FILESIZE dwFirstXRefOffset = m_Syntax.SavePos();
- FX_BOOL bXRefRebuilt = FALSE;
- FX_BOOL bLoadV4 = FALSE;
- if (!(bLoadV4 = LoadCrossRefV4(dwFirstXRefOffset, 0, FALSE, FALSE)) && !LoadCrossRefV5(dwFirstXRefOffset, dwFirstXRefOffset, TRUE)) {
- if (!RebuildCrossRef()) {
- return PDFPARSE_ERROR_FORMAT;
- }
- bXRefRebuilt = TRUE;
- m_LastXRefOffset = 0;
+ }
+ if (word == FX_BSTRC(">>")) {
+ m_Pos = SavedPos;
+ return NULL;
+ }
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_INVALID;
+ }
+ return NULL;
+}
+CPDF_Object* CPDF_SyntaxParser::GetObjectByStrict(
+ CPDF_IndirectObjects* pObjList,
+ FX_DWORD objnum,
+ FX_DWORD gennum,
+ struct PARSE_CONTEXT* pContext) {
+ CFX_AutoRestorer<int> restorer(&s_CurrentRecursionDepth);
+ if (++s_CurrentRecursionDepth > kParserMaxRecursionDepth) {
+ return NULL;
+ }
+ FX_FILESIZE SavedPos = m_Pos;
+ FX_BOOL bTypeOnly = pContext && (pContext->m_Flags & PDFPARSE_TYPEONLY);
+ FX_BOOL bIsNumber;
+ CFX_ByteString word = GetNextWord(bIsNumber);
+ if (word.GetLength() == 0) {
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_INVALID;
}
- if (bLoadV4) {
- m_pTrailer = LoadTrailerV4();
- if (m_pTrailer == NULL) {
- return FALSE;
- }
- int32_t xrefsize = GetDirectInteger(m_pTrailer, FX_BSTRC("Size"));
- if (xrefsize > 0) {
- m_CrossRef.SetSize(xrefsize);
- m_V5Type.SetSize(xrefsize);
+ return NULL;
+ }
+ if (bIsNumber) {
+ FX_FILESIZE SavedPos = m_Pos;
+ CFX_ByteString nextword = GetNextWord(bIsNumber);
+ if (bIsNumber) {
+ CFX_ByteString nextword2 = GetNextWord(bIsNumber);
+ if (nextword2 == FX_BSTRC("R")) {
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_REFERENCE;
}
+ FX_DWORD objnum = FXSYS_atoi(word);
+ return new CPDF_Reference(pObjList, objnum);
+ }
}
- FX_DWORD dwRet = SetEncryptHandler();
- if (dwRet != PDFPARSE_ERROR_SUCCESS) {
- return dwRet;
+ m_Pos = SavedPos;
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_NUMBER;
}
- m_pDocument->LoadAsynDoc(m_pLinearized->GetDict());
- if (m_pDocument->GetRoot() == NULL || m_pDocument->GetPageCount() == 0) {
- if (bXRefRebuilt) {
- return PDFPARSE_ERROR_FORMAT;
- }
- ReleaseEncryptHandler();
- if (!RebuildCrossRef()) {
- return PDFPARSE_ERROR_FORMAT;
- }
- dwRet = SetEncryptHandler();
- if (dwRet != PDFPARSE_ERROR_SUCCESS) {
- return dwRet;
- }
- m_pDocument->LoadAsynDoc(m_pLinearized->GetDict());
- if (m_pDocument->GetRoot() == NULL) {
- return PDFPARSE_ERROR_FORMAT;
- }
+ return CPDF_Number::Create(word);
+ }
+ if (word == FX_BSTRC("true") || word == FX_BSTRC("false")) {
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_BOOLEAN;
}
- FXSYS_qsort(m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize);
- FX_DWORD RootObjNum = GetRootObjNum();
- if (RootObjNum == 0) {
- ReleaseEncryptHandler();
- RebuildCrossRef();
- RootObjNum = GetRootObjNum();
- if (RootObjNum == 0) {
- return PDFPARSE_ERROR_FORMAT;
+ return CPDF_Boolean::Create(word == FX_BSTRC("true"));
+ }
+ if (word == FX_BSTRC("null")) {
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_NULL;
+ }
+ return CPDF_Null::Create();
+ }
+ if (word == FX_BSTRC("(")) {
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_STRING;
+ }
+ CFX_ByteString str = ReadString();
+ if (m_pCryptoHandler) {
+ m_pCryptoHandler->Decrypt(objnum, gennum, str);
+ }
+ return CPDF_String::Create(str, FALSE);
+ }
+ if (word == FX_BSTRC("<")) {
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_STRING;
+ }
+ CFX_ByteString str = ReadHexString();
+ if (m_pCryptoHandler) {
+ m_pCryptoHandler->Decrypt(objnum, gennum, str);
+ }
+ return CPDF_String::Create(str, TRUE);
+ }
+ if (word == FX_BSTRC("[")) {
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_ARRAY;
+ }
+ CPDF_Array* pArray = CPDF_Array::Create();
+ while (1) {
+ CPDF_Object* pObj = GetObject(pObjList, objnum, gennum);
+ if (pObj == NULL) {
+ if (m_WordBuffer[0] == ']') {
+ return pArray;
}
- dwRet = SetEncryptHandler();
- if (dwRet != PDFPARSE_ERROR_SUCCESS) {
- return dwRet;
+ if (pArray) {
+ pArray->Release();
}
+ return NULL;
+ }
+ pArray->Add(pObj);
}
- if (m_pSecurityHandler && m_pSecurityHandler->IsMetadataEncrypted()) {
- CPDF_Object* pMetadata = m_pDocument->GetRoot()->GetElement(FX_BSTRC("Metadata"));
- if (pMetadata && pMetadata->GetType() == PDFOBJ_REFERENCE) {
- m_Syntax.m_MetadataObjnum = ((CPDF_Reference*) pMetadata)->GetRefObjNum();
- }
+ }
+ if (word[0] == '/') {
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_NAME;
}
- return PDFPARSE_ERROR_SUCCESS;
-}
-FX_BOOL CPDF_Parser::LoadLinearizedAllCrossRefV5(FX_FILESIZE xrefpos)
-{
- if (!LoadCrossRefV5(xrefpos, xrefpos, FALSE)) {
- return FALSE;
+ return CPDF_Name::Create(
+ PDF_NameDecode(CFX_ByteStringC(m_WordBuffer + 1, m_WordSize - 1)));
+ }
+ if (word == FX_BSTRC("<<")) {
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_DICTIONARY;
}
- while (xrefpos)
- if (!LoadCrossRefV5(xrefpos, xrefpos, FALSE)) {
- return FALSE;
+ if (pContext) {
+ pContext->m_DictStart = SavedPos;
+ }
+ CPDF_Dictionary* pDict = CPDF_Dictionary::Create();
+ while (1) {
+ FX_BOOL bIsNumber;
+ FX_FILESIZE SavedPos = m_Pos;
+ CFX_ByteString key = GetNextWord(bIsNumber);
+ if (key.IsEmpty()) {
+ if (pDict) {
+ pDict->Release();
}
- m_ObjectStreamMap.InitHashTable(101, FALSE);
- m_bXRefStream = TRUE;
- return TRUE;
-}
-FX_DWORD CPDF_Parser::LoadLinearizedMainXRefTable()
-{
- FX_DWORD dwSaveMetadataObjnum = m_Syntax.m_MetadataObjnum;
- m_Syntax.m_MetadataObjnum = 0;
- if (m_pTrailer) {
- m_pTrailer->Release();
- m_pTrailer = NULL;
- }
- m_Syntax.RestorePos(m_LastXRefOffset - m_Syntax.m_HeaderOffset);
- uint8_t ch = 0;
- FX_DWORD dwCount = 0;
- m_Syntax.GetNextChar(ch);
- int32_t type = PDF_CharType[ch];
- while (type == 'W') {
- ++dwCount;
- if (m_Syntax.m_FileLen >= (FX_FILESIZE)(m_Syntax.SavePos() + m_Syntax.m_HeaderOffset)) {
+ return NULL;
+ }
+ if (key == FX_BSTRC(">>")) {
+ break;
+ }
+ if (key == FX_BSTRC("endobj")) {
+ m_Pos = SavedPos;
+ break;
+ }
+ if (key[0] != '/') {
+ continue;
+ }
+ key = PDF_NameDecode(key);
+ CPDF_Object* pObj = GetObject(pObjList, objnum, gennum);
+ if (pObj == NULL) {
+ if (pDict) {
+ pDict->Release();
+ }
+ uint8_t ch;
+ while (1) {
+ if (!GetNextChar(ch)) {
break;
+ }
+ if (ch == 0x0A || ch == 0x0D) {
+ break;
+ }
}
- m_Syntax.GetNextChar(ch);
- type = PDF_CharType[ch];
+ return NULL;
+ }
+ if (key.GetLength() > 1) {
+ pDict->AddValue(CFX_ByteStringC(key.c_str() + 1, key.GetLength() - 1),
+ pObj);
+ }
}
- m_LastXRefOffset += dwCount;
- FX_POSITION pos = m_ObjectStreamMap.GetStartPosition();
- while (pos) {
- void* objnum;
- CPDF_StreamAcc* pStream;
- m_ObjectStreamMap.GetNextAssoc(pos, objnum, (void*&)pStream);
- delete pStream;
- }
- m_ObjectStreamMap.RemoveAll();
- if (!LoadLinearizedAllCrossRefV4(m_LastXRefOffset, m_dwXrefStartObjNum) && !LoadLinearizedAllCrossRefV5(m_LastXRefOffset)) {
- m_LastXRefOffset = 0;
- m_Syntax.m_MetadataObjnum = dwSaveMetadataObjnum;
- return PDFPARSE_ERROR_FORMAT;
+ if (pContext) {
+ pContext->m_DictEnd = m_Pos;
+ if (pContext->m_Flags & PDFPARSE_NOSTREAM) {
+ return pDict;
+ }
}
- FXSYS_qsort(m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize);
- m_Syntax.m_MetadataObjnum = dwSaveMetadataObjnum;
- return PDFPARSE_ERROR_SUCCESS;
+ FX_FILESIZE SavedPos = m_Pos;
+ FX_BOOL bIsNumber;
+ CFX_ByteString nextword = GetNextWord(bIsNumber);
+ if (nextword == FX_BSTRC("stream")) {
+ CPDF_Stream* pStream = ReadStream(pDict, pContext, objnum, gennum);
+ if (pStream) {
+ return pStream;
+ }
+ if (pDict) {
+ pDict->Release();
+ }
+ return NULL;
+ } else {
+ m_Pos = SavedPos;
+ return pDict;
+ }
+ }
+ if (word == FX_BSTRC(">>")) {
+ m_Pos = SavedPos;
+ return NULL;
+ }
+ if (bTypeOnly) {
+ return (CPDF_Object*)PDFOBJ_INVALID;
+ }
+ return NULL;
}
+CPDF_Stream* CPDF_SyntaxParser::ReadStream(CPDF_Dictionary* pDict,
+ PARSE_CONTEXT* pContext,
+ FX_DWORD objnum,
+ FX_DWORD gennum) {
+ CPDF_Object* pLenObj = pDict->GetElement(FX_BSTRC("Length"));
+ FX_FILESIZE len = 0;
+ if (pLenObj && ((pLenObj->GetType() != PDFOBJ_REFERENCE) ||
+ ((((CPDF_Reference*)pLenObj)->GetObjList() != NULL) &&
+ ((CPDF_Reference*)pLenObj)->GetRefObjNum() != objnum))) {
+ len = pLenObj->GetInteger();
+ }
-// static
-int CPDF_SyntaxParser::s_CurrentRecursionDepth = 0;
+ ToNextLine();
+ FX_FILESIZE StreamStartPos = m_Pos;
+ if (pContext) {
+ pContext->m_DataStart = m_Pos;
+ }
-CPDF_SyntaxParser::CPDF_SyntaxParser()
-{
- m_pFileAccess = NULL;
- m_pCryptoHandler = NULL;
- m_pFileBuf = NULL;
- m_BufSize = CPDF_ModuleMgr::kFileBufSize;
- m_pFileBuf = NULL;
- m_MetadataObjnum = 0;
- m_dwWordPos = 0;
- m_bFileStream = FALSE;
-}
-CPDF_SyntaxParser::~CPDF_SyntaxParser()
-{
- if (m_pFileBuf) {
- FX_Free(m_pFileBuf);
+ CPDF_CryptoHandler* pCryptoHandler =
+ objnum == (FX_DWORD)m_MetadataObjnum ? NULL : m_pCryptoHandler;
+ if (pCryptoHandler == NULL) {
+ pdfium::base::CheckedNumeric<FX_FILESIZE> pos = m_Pos;
+ pos += len;
+ if (pos.IsValid() && pos.ValueOrDie() < m_FileLen) {
+ m_Pos = pos.ValueOrDie();
}
+ GetNextWord();
+ if (m_WordSize < 9 || FXSYS_memcmp(m_WordBuffer, "endstream", 9)) {
+ m_Pos = StreamStartPos;
+ FX_FILESIZE offset = FindTag(FX_BSTRC("endstream"), 0);
+ if (offset >= 0) {
+ FX_FILESIZE curPos = m_Pos;
+ m_Pos = StreamStartPos;
+ FX_FILESIZE endobjOffset = FindTag(FX_BSTRC("endobj"), 0);
+ if (endobjOffset < offset && endobjOffset >= 0) {
+ offset = endobjOffset;
+ } else {
+ m_Pos = curPos;
+ }
+ uint8_t byte1, byte2;
+ GetCharAt(StreamStartPos + offset - 1, byte1);
+ GetCharAt(StreamStartPos + offset - 2, byte2);
+ if (byte1 == 0x0a && byte2 == 0x0d) {
+ len -= 2;
+ } else if (byte1 == 0x0a || byte1 == 0x0d) {
+ len--;
+ }
+ len = (FX_DWORD)offset;
+ pDict->SetAtInteger(FX_BSTRC("Length"), len);
+ } else {
+ m_Pos = StreamStartPos;
+ if (FindTag(FX_BSTRC("endobj"), 0) < 0) {
+ return NULL;
+ }
+ }
+ }
+ m_Pos = StreamStartPos;
+ }
+ CPDF_Stream* pStream;
+ uint8_t* pData = FX_Alloc(uint8_t, len);
+ ReadBlock(pData, len);
+ if (pCryptoHandler) {
+ CFX_BinaryBuf dest_buf;
+ dest_buf.EstimateSize(pCryptoHandler->DecryptGetSize(len));
+ void* context = pCryptoHandler->DecryptStart(objnum, gennum);
+ pCryptoHandler->DecryptStream(context, pData, len, dest_buf);
+ pCryptoHandler->DecryptFinish(context, dest_buf);
+ FX_Free(pData);
+ pData = dest_buf.GetBuffer();
+ len = dest_buf.GetSize();
+ dest_buf.DetachBuffer();
+ }
+ pStream = new CPDF_Stream(pData, len, pDict);
+ if (pContext) {
+ pContext->m_DataEnd = pContext->m_DataStart + len;
+ }
+ StreamStartPos = m_Pos;
+ GetNextWord();
+ if (m_WordSize == 6 && 0 == FXSYS_memcmp(m_WordBuffer, "endobj", 6)) {
+ m_Pos = StreamStartPos;
+ }
+ return pStream;
}
-FX_BOOL CPDF_SyntaxParser::GetCharAt(FX_FILESIZE pos, uint8_t& ch)
-{
- FX_FILESIZE save_pos = m_Pos;
- m_Pos = pos;
- FX_BOOL ret = GetNextChar(ch);
- m_Pos = save_pos;
- return ret;
+void CPDF_SyntaxParser::InitParser(IFX_FileRead* pFileAccess,
+ FX_DWORD HeaderOffset) {
+ if (m_pFileBuf) {
+ FX_Free(m_pFileBuf);
+ m_pFileBuf = NULL;
+ }
+ m_pFileBuf = FX_Alloc(uint8_t, m_BufSize);
+ m_HeaderOffset = HeaderOffset;
+ m_FileLen = pFileAccess->GetSize();
+ m_Pos = 0;
+ m_pFileAccess = pFileAccess;
+ m_BufOffset = 0;
+ pFileAccess->ReadBlock(
+ m_pFileBuf, 0,
+ (size_t)((FX_FILESIZE)m_BufSize > m_FileLen ? m_FileLen : m_BufSize));
}
-FX_BOOL CPDF_SyntaxParser::GetNextChar(uint8_t& ch)
-{
- FX_FILESIZE pos = m_Pos + m_HeaderOffset;
- if (pos >= m_FileLen) {
- return FALSE;
+int32_t CPDF_SyntaxParser::GetDirectNum() {
+ GetNextWord();
+ if (!m_bIsNumber) {
+ return 0;
+ }
+ m_WordBuffer[m_WordSize] = 0;
+ return FXSYS_atoi((const FX_CHAR*)m_WordBuffer);
+}
+FX_BOOL CPDF_SyntaxParser::IsWholeWord(FX_FILESIZE startpos,
+ FX_FILESIZE limit,
+ const uint8_t* tag,
+ FX_DWORD taglen) {
+ uint8_t type = PDF_CharType[tag[0]];
+ FX_BOOL bCheckLeft = type != 'D' && type != 'W';
+ type = PDF_CharType[tag[taglen - 1]];
+ FX_BOOL bCheckRight = type != 'D' && type != 'W';
+ uint8_t ch;
+ if (bCheckRight && startpos + (int32_t)taglen <= limit &&
+ GetCharAt(startpos + (int32_t)taglen, ch)) {
+ uint8_t type = PDF_CharType[ch];
+ if (type == 'N' || type == 'R') {
+ return FALSE;
}
- if (m_BufOffset >= pos || (FX_FILESIZE)(m_BufOffset + m_BufSize) <= pos) {
- FX_FILESIZE read_pos = pos;
- FX_DWORD read_size = m_BufSize;
- if ((FX_FILESIZE)read_size > m_FileLen) {
- read_size = (FX_DWORD)m_FileLen;
- }
- if ((FX_FILESIZE)(read_pos + read_size) > m_FileLen) {
- if (m_FileLen < (FX_FILESIZE)read_size) {
- read_pos = 0;
- read_size = (FX_DWORD)m_FileLen;
- } else {
- read_pos = m_FileLen - read_size;
- }
- }
- if (!m_pFileAccess->ReadBlock(m_pFileBuf, read_pos, read_size)) {
- return FALSE;
- }
- m_BufOffset = read_pos;
+ }
+ if (bCheckLeft && startpos > 0 && GetCharAt(startpos - 1, ch)) {
+ uint8_t type = PDF_CharType[ch];
+ if (type == 'N' || type == 'R') {
+ return FALSE;
}
- ch = m_pFileBuf[pos - m_BufOffset];
- m_Pos ++;
- return TRUE;
+ }
+ return TRUE;
}
-FX_BOOL CPDF_SyntaxParser::GetCharAtBackward(FX_FILESIZE pos, uint8_t& ch)
-{
- pos += m_HeaderOffset;
- if (pos >= m_FileLen) {
+FX_BOOL CPDF_SyntaxParser::SearchWord(const CFX_ByteStringC& tag,
+ FX_BOOL bWholeWord,
+ FX_BOOL bForward,
+ FX_FILESIZE limit) {
+ int32_t taglen = tag.GetLength();
+ if (taglen == 0) {
+ return FALSE;
+ }
+ FX_FILESIZE pos = m_Pos;
+ int32_t offset = 0;
+ if (!bForward) {
+ offset = taglen - 1;
+ }
+ const uint8_t* tag_data = tag.GetPtr();
+ uint8_t byte;
+ while (1) {
+ if (bForward) {
+ if (limit) {
+ if (pos >= m_Pos + limit) {
+ return FALSE;
+ }
+ }
+ if (!GetCharAt(pos, byte)) {
return FALSE;
- }
- if (m_BufOffset >= pos || (FX_FILESIZE)(m_BufOffset + m_BufSize) <= pos) {
- FX_FILESIZE read_pos;
- if (pos < (FX_FILESIZE)m_BufSize) {
- read_pos = 0;
- } else {
- read_pos = pos - m_BufSize + 1;
- }
- FX_DWORD read_size = m_BufSize;
- if ((FX_FILESIZE)(read_pos + read_size) > m_FileLen) {
- if (m_FileLen < (FX_FILESIZE)read_size) {
- read_pos = 0;
- read_size = (FX_DWORD)m_FileLen;
- } else {
- read_pos = m_FileLen - read_size;
- }
- }
- if (!m_pFileAccess->ReadBlock(m_pFileBuf, read_pos, read_size)) {
- return FALSE;
+ }
+ } else {
+ if (limit) {
+ if (pos <= m_Pos - limit) {
+ return FALSE;
}
- m_BufOffset = read_pos;
- }
- ch = m_pFileBuf[pos - m_BufOffset];
- return TRUE;
-}
-FX_BOOL CPDF_SyntaxParser::ReadBlock(uint8_t* pBuf, FX_DWORD size)
-{
- if (!m_pFileAccess->ReadBlock(pBuf, m_Pos + m_HeaderOffset, size)) {
+ }
+ if (!GetCharAtBackward(pos, byte)) {
return FALSE;
+ }
+ }
+ if (byte == tag_data[offset]) {
+ if (bForward) {
+ offset++;
+ if (offset < taglen) {
+ pos++;
+ continue;
+ }
+ } else {
+ offset--;
+ if (offset >= 0) {
+ pos--;
+ continue;
+ }
+ }
+ FX_FILESIZE startpos = bForward ? pos - taglen + 1 : pos;
+ if (!bWholeWord || IsWholeWord(startpos, limit, tag.GetPtr(), taglen)) {
+ m_Pos = startpos;
+ return TRUE;
+ }
}
- m_Pos += size;
- return TRUE;
-}
-#define MAX_WORD_BUFFER 256
-void CPDF_SyntaxParser::GetNextWord()
-{
- m_WordSize = 0;
- m_bIsNumber = TRUE;
- uint8_t ch;
- if (!GetNextChar(ch)) {
- return;
+ if (bForward) {
+ offset = byte == tag_data[0] ? 1 : 0;
+ pos++;
+ } else {
+ offset = byte == tag_data[taglen - 1] ? taglen - 2 : taglen - 1;
+ pos--;
}
- uint8_t type = PDF_CharType[ch];
- while (1) {
- while (type == 'W') {
- if (!GetNextChar(ch)) {
- return;
- }
- type = PDF_CharType[ch];
- }
- if (ch != '%') {
- break;
- }
- while (1) {
- if (!GetNextChar(ch)) {
- return;
- }
- if (ch == '\r' || ch == '\n') {
- break;
- }
- }
- type = PDF_CharType[ch];
+ if (pos < 0) {
+ return FALSE;
}
- if (type == 'D') {
- m_bIsNumber = FALSE;
- m_WordBuffer[m_WordSize++] = ch;
- if (ch == '/') {
- while (1) {
- if (!GetNextChar(ch)) {
- return;
- }
- type = PDF_CharType[ch];
- if (type != 'R' && type != 'N') {
- m_Pos --;
- return;
- }
- if (m_WordSize < MAX_WORD_BUFFER) {
- m_WordBuffer[m_WordSize++] = ch;
- }
- }
- } else if (ch == '<') {
- if (!GetNextChar(ch)) {
- return;
- }
- if (ch == '<') {
- m_WordBuffer[m_WordSize++] = ch;
- } else {
- m_Pos --;
- }
- } else if (ch == '>') {
- if (!GetNextChar(ch)) {
- return;
- }
- if (ch == '>') {
- m_WordBuffer[m_WordSize++] = ch;
+ }
+ return FALSE;
+}
+struct _SearchTagRecord {
+ const uint8_t* m_pTag;
+ FX_DWORD m_Len;
+ FX_DWORD m_Offset;
+};
+int32_t CPDF_SyntaxParser::SearchMultiWord(const CFX_ByteStringC& tags,
+ FX_BOOL bWholeWord,
+ FX_FILESIZE limit) {
+ int32_t ntags = 1, i;
+ for (i = 0; i < tags.GetLength(); i++)
+ if (tags[i] == 0) {
+ ntags++;
+ }
+ _SearchTagRecord* pPatterns = FX_Alloc(_SearchTagRecord, ntags);
+ FX_DWORD start = 0, itag = 0, max_len = 0;
+ for (i = 0; i <= tags.GetLength(); i++) {
+ if (tags[i] == 0) {
+ FX_DWORD len = i - start;
+ if (len > max_len) {
+ max_len = len;
+ }
+ pPatterns[itag].m_pTag = tags.GetPtr() + start;
+ pPatterns[itag].m_Len = len;
+ pPatterns[itag].m_Offset = 0;
+ start = i + 1;
+ itag++;
+ }
+ }
+ FX_FILESIZE pos = m_Pos;
+ uint8_t byte;
+ GetCharAt(pos++, byte);
+ int32_t found = -1;
+ while (1) {
+ for (i = 0; i < ntags; i++) {
+ if (pPatterns[i].m_pTag[pPatterns[i].m_Offset] == byte) {
+ pPatterns[i].m_Offset++;
+ if (pPatterns[i].m_Offset == pPatterns[i].m_Len) {
+ if (!bWholeWord ||
+ IsWholeWord(pos - pPatterns[i].m_Len, limit, pPatterns[i].m_pTag,
+ pPatterns[i].m_Len)) {
+ found = i;
+ goto end;
+ } else {
+ if (pPatterns[i].m_pTag[0] == byte) {
+ pPatterns[i].m_Offset = 1;
} else {
- m_Pos --;
+ pPatterns[i].m_Offset = 0;
}
+ }
}
- return;
- }
- while (1) {
- if (m_WordSize < MAX_WORD_BUFFER) {
- m_WordBuffer[m_WordSize++] = ch;
- }
- if (type != 'N') {
- m_bIsNumber = FALSE;
- }
- if (!GetNextChar(ch)) {
- return;
- }
- type = PDF_CharType[ch];
- if (type == 'D' || type == 'W') {
- m_Pos --;
- break;
+ } else {
+ if (pPatterns[i].m_pTag[0] == byte) {
+ pPatterns[i].m_Offset = 1;
+ } else {
+ pPatterns[i].m_Offset = 0;
}
+ }
+ }
+ if (limit && pos >= m_Pos + limit) {
+ goto end;
+ }
+ if (!GetCharAt(pos, byte)) {
+ goto end;
}
+ pos++;
+ }
+end:
+ FX_Free(pPatterns);
+ return found;
}
-CFX_ByteString CPDF_SyntaxParser::ReadString()
-{
+FX_FILESIZE CPDF_SyntaxParser::FindTag(const CFX_ByteStringC& tag,
+ FX_FILESIZE limit) {
+ int32_t taglen = tag.GetLength();
+ int32_t match = 0;
+ limit += m_Pos;
+ FX_FILESIZE startpos = m_Pos;
+ while (1) {
uint8_t ch;
if (!GetNextChar(ch)) {
- return CFX_ByteString();
+ return -1;
}
- CFX_ByteTextBuf buf;
- int32_t parlevel = 0;
- int32_t status = 0, iEscCode = 0;
- while (1) {
- switch (status) {
- case 0:
- if (ch == ')') {
- if (parlevel == 0) {
- return buf.GetByteString();
- }
- parlevel --;
- buf.AppendChar(')');
- } else if (ch == '(') {
- parlevel ++;
- buf.AppendChar('(');
- } else if (ch == '\\') {
- status = 1;
- } else {
- buf.AppendChar(ch);
- }
- break;
- case 1:
- if (ch >= '0' && ch <= '7') {
- iEscCode = ch - '0';
- status = 2;
- break;
- }
- if (ch == 'n') {
- buf.AppendChar('\n');
- } else if (ch == 'r') {
- buf.AppendChar('\r');
- } else if (ch == 't') {
- buf.AppendChar('\t');
- } else if (ch == 'b') {
- buf.AppendChar('\b');
- } else if (ch == 'f') {
- buf.AppendChar('\f');
- } else if (ch == '\r') {
- status = 4;
- break;
- } else if (ch == '\n') {
- } else {
- buf.AppendChar(ch);
- }
- status = 0;
- break;
- case 2:
- if (ch >= '0' && ch <= '7') {
- iEscCode = iEscCode * 8 + ch - '0';
- status = 3;
- } else {
- buf.AppendChar(iEscCode);
- status = 0;
- continue;
- }
- break;
- case 3:
- if (ch >= '0' && ch <= '7') {
- iEscCode = iEscCode * 8 + ch - '0';
- buf.AppendChar(iEscCode);
- status = 0;
- } else {
- buf.AppendChar(iEscCode);
- status = 0;
- continue;
- }
- break;
- case 4:
- status = 0;
- if (ch != '\n') {
- continue;
- }
- break;
- }
- if (!GetNextChar(ch)) {
- break;
- }
+ if (ch == tag[match]) {
+ match++;
+ if (match == taglen) {
+ return m_Pos - startpos - taglen;
+ }
+ } else {
+ match = ch == tag[0] ? 1 : 0;
+ }
+ if (limit && m_Pos == limit) {
+ return -1;
}
- GetNextChar(ch);
- return buf.GetByteString();
+ }
+ return -1;
}
-CFX_ByteString CPDF_SyntaxParser::ReadHexString()
-{
- uint8_t ch;
+void CPDF_SyntaxParser::GetBinary(uint8_t* buffer, FX_DWORD size) {
+ FX_DWORD offset = 0;
+ uint8_t ch;
+ while (1) {
if (!GetNextChar(ch)) {
- return CFX_ByteString();
- }
- CFX_BinaryBuf buf;
- FX_BOOL bFirst = TRUE;
- uint8_t code = 0;
- while (1) {
- if (ch == '>') {
- break;
- }
- if (ch >= '0' && ch <= '9') {
- if (bFirst) {
- code = (ch - '0') * 16;
- } else {
- code += ch - '0';
- buf.AppendByte((uint8_t)code);
- }
- bFirst = !bFirst;
- } else if (ch >= 'A' && ch <= 'F') {
- if (bFirst) {
- code = (ch - 'A' + 10) * 16;
- } else {
- code += ch - 'A' + 10;
- buf.AppendByte((uint8_t)code);
- }
- bFirst = !bFirst;
- } else if (ch >= 'a' && ch <= 'f') {
- if (bFirst) {
- code = (ch - 'a' + 10) * 16;
- } else {
- code += ch - 'a' + 10;
- buf.AppendByte((uint8_t)code);
- }
- bFirst = !bFirst;
- }
- if (!GetNextChar(ch)) {
- break;
- }
+ return;
}
- if (!bFirst) {
- buf.AppendByte((uint8_t)code);
+ buffer[offset++] = ch;
+ if (offset == size) {
+ break;
}
- return buf.GetByteString();
+ }
}
-void CPDF_SyntaxParser::ToNextLine()
-{
- uint8_t ch;
- while (GetNextChar(ch)) {
- if (ch == '\n') {
- break;
- }
- if (ch == '\r') {
- GetNextChar(ch);
- if (ch != '\n') {
- --m_Pos;
- }
- break;
- }
- }
-}
-void CPDF_SyntaxParser::ToNextWord()
-{
- uint8_t ch;
- if (!GetNextChar(ch)) {
- return;
- }
- uint8_t type = PDF_CharType[ch];
- while (1) {
- while (type == 'W') {
- m_dwWordPos = m_Pos;
- if (!GetNextChar(ch)) {
- return;
- }
- type = PDF_CharType[ch];
- }
- if (ch != '%') {
- break;
- }
- while (1) {
- if (!GetNextChar(ch)) {
- return;
- }
- if (ch == '\r' || ch == '\n') {
- break;
- }
- }
- type = PDF_CharType[ch];
- }
- m_Pos --;
-}
-CFX_ByteString CPDF_SyntaxParser::GetNextWord(FX_BOOL& bIsNumber)
-{
- GetNextWord();
- bIsNumber = m_bIsNumber;
- return CFX_ByteString((const FX_CHAR*)m_WordBuffer, m_WordSize);
-}
-CFX_ByteString CPDF_SyntaxParser::GetKeyword()
-{
- GetNextWord();
- return CFX_ByteString((const FX_CHAR*)m_WordBuffer, m_WordSize);
-}
-CPDF_Object* CPDF_SyntaxParser::GetObject(CPDF_IndirectObjects* pObjList, FX_DWORD objnum, FX_DWORD gennum, PARSE_CONTEXT* pContext, FX_BOOL bDecrypt)
-{
- CFX_AutoRestorer<int> restorer(&s_CurrentRecursionDepth);
- if (++s_CurrentRecursionDepth > kParserMaxRecursionDepth) {
- return NULL;
- }
- FX_FILESIZE SavedPos = m_Pos;
- FX_BOOL bTypeOnly = pContext && (pContext->m_Flags & PDFPARSE_TYPEONLY);
- FX_BOOL bIsNumber;
- CFX_ByteString word = GetNextWord(bIsNumber);
- if (word.GetLength() == 0) {
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_INVALID;
- }
- return NULL;
- }
- if (bIsNumber) {
- FX_FILESIZE SavedPos = m_Pos;
- CFX_ByteString nextword = GetNextWord(bIsNumber);
- if (bIsNumber) {
- CFX_ByteString nextword2 = GetNextWord(bIsNumber);
- if (nextword2 == FX_BSTRC("R")) {
- FX_DWORD objnum = FXSYS_atoi(word);
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_REFERENCE;
- }
- return new CPDF_Reference(pObjList, objnum);
- }
- }
- m_Pos = SavedPos;
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_NUMBER;
- }
- return CPDF_Number::Create(word);
- }
- if (word == FX_BSTRC("true") || word == FX_BSTRC("false")) {
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_BOOLEAN;
- }
- return CPDF_Boolean::Create(word == FX_BSTRC("true"));
- }
- if (word == FX_BSTRC("null")) {
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_NULL;
- }
- return CPDF_Null::Create();
- }
- if (word == FX_BSTRC("(")) {
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_STRING;
- }
- CFX_ByteString str = ReadString();
- if (m_pCryptoHandler && bDecrypt) {
- m_pCryptoHandler->Decrypt(objnum, gennum, str);
- }
- return CPDF_String::Create(str, FALSE);
- }
- if (word == FX_BSTRC("<")) {
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_STRING;
- }
- CFX_ByteString str = ReadHexString();
- if (m_pCryptoHandler && bDecrypt) {
- m_pCryptoHandler->Decrypt(objnum, gennum, str);
- }
- return CPDF_String::Create(str, TRUE);
- }
- if (word == FX_BSTRC("[")) {
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_ARRAY;
- }
- CPDF_Array* pArray = CPDF_Array::Create();
- while (1) {
- CPDF_Object* pObj = GetObject(pObjList, objnum, gennum);
- if (pObj == NULL) {
- return pArray;
- }
- pArray->Add(pObj);
- }
- }
- if (word[0] == '/') {
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_NAME;
- }
- return CPDF_Name::Create(
- PDF_NameDecode(CFX_ByteStringC(m_WordBuffer + 1, m_WordSize - 1)));
- }
- if (word == FX_BSTRC("<<")) {
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_DICTIONARY;
- }
- if (pContext) {
- pContext->m_DictStart = SavedPos;
- }
- CPDF_Dictionary* pDict = CPDF_Dictionary::Create();
- int32_t nKeys = 0;
- FX_FILESIZE dwSignValuePos = 0;
- while (1) {
- FX_BOOL bIsNumber;
- CFX_ByteString key = GetNextWord(bIsNumber);
- if (key.IsEmpty()) {
- if (pDict)
- pDict->Release();
- return NULL;
- }
- FX_FILESIZE SavedPos = m_Pos - key.GetLength();
- if (key == FX_BSTRC(">>")) {
- break;
- }
- if (key == FX_BSTRC("endobj")) {
- m_Pos = SavedPos;
- break;
- }
- if (key[0] != '/') {
- continue;
- }
- nKeys ++;
- key = PDF_NameDecode(key);
- if (key == FX_BSTRC("/Contents")) {
- dwSignValuePos = m_Pos;
- }
- CPDF_Object* pObj = GetObject(pObjList, objnum, gennum);
- if (pObj == NULL) {
- continue;
- }
- if (key.GetLength() >= 1) {
- if (nKeys < 32) {
- pDict->SetAt(CFX_ByteStringC(key.c_str() + 1, key.GetLength() - 1), pObj);
- } else {
- pDict->AddValue(CFX_ByteStringC(key.c_str() + 1, key.GetLength() - 1), pObj);
- }
- }
- }
- if (IsSignatureDict(pDict)) {
- FX_FILESIZE dwSavePos = m_Pos;
- m_Pos = dwSignValuePos;
- CPDF_Object* pObj = GetObject(pObjList, objnum, gennum, NULL, FALSE);
- pDict->SetAt(FX_BSTRC("Contents"), pObj);
- m_Pos = dwSavePos;
- }
- if (pContext) {
- pContext->m_DictEnd = m_Pos;
- if (pContext->m_Flags & PDFPARSE_NOSTREAM) {
- return pDict;
- }
- }
- FX_FILESIZE SavedPos = m_Pos;
- FX_BOOL bIsNumber;
- CFX_ByteString nextword = GetNextWord(bIsNumber);
- if (nextword == FX_BSTRC("stream")) {
- CPDF_Stream* pStream = ReadStream(pDict, pContext, objnum, gennum);
- if (pStream) {
- return pStream;
- }
- if (pDict)
- pDict->Release();
- return NULL;
- } else {
- m_Pos = SavedPos;
- return pDict;
- }
- }
- if (word == FX_BSTRC(">>")) {
- m_Pos = SavedPos;
- return NULL;
- }
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_INVALID;
- }
- return NULL;
-}
-CPDF_Object* CPDF_SyntaxParser::GetObjectByStrict(CPDF_IndirectObjects* pObjList, FX_DWORD objnum, FX_DWORD gennum, struct PARSE_CONTEXT* pContext)
-{
- CFX_AutoRestorer<int> restorer(&s_CurrentRecursionDepth);
- if (++s_CurrentRecursionDepth > kParserMaxRecursionDepth) {
- return NULL;
- }
- FX_FILESIZE SavedPos = m_Pos;
- FX_BOOL bTypeOnly = pContext && (pContext->m_Flags & PDFPARSE_TYPEONLY);
- FX_BOOL bIsNumber;
- CFX_ByteString word = GetNextWord(bIsNumber);
- if (word.GetLength() == 0) {
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_INVALID;
- }
- return NULL;
- }
- if (bIsNumber) {
- FX_FILESIZE SavedPos = m_Pos;
- CFX_ByteString nextword = GetNextWord(bIsNumber);
- if (bIsNumber) {
- CFX_ByteString nextword2 = GetNextWord(bIsNumber);
- if (nextword2 == FX_BSTRC("R")) {
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_REFERENCE;
- }
- FX_DWORD objnum = FXSYS_atoi(word);
- return new CPDF_Reference(pObjList, objnum);
- }
- }
- m_Pos = SavedPos;
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_NUMBER;
- }
- return CPDF_Number::Create(word);
- }
- if (word == FX_BSTRC("true") || word == FX_BSTRC("false")) {
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_BOOLEAN;
- }
- return CPDF_Boolean::Create(word == FX_BSTRC("true"));
- }
- if (word == FX_BSTRC("null")) {
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_NULL;
- }
- return CPDF_Null::Create();
- }
- if (word == FX_BSTRC("(")) {
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_STRING;
- }
- CFX_ByteString str = ReadString();
- if (m_pCryptoHandler) {
- m_pCryptoHandler->Decrypt(objnum, gennum, str);
- }
- return CPDF_String::Create(str, FALSE);
- }
- if (word == FX_BSTRC("<")) {
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_STRING;
- }
- CFX_ByteString str = ReadHexString();
- if (m_pCryptoHandler) {
- m_pCryptoHandler->Decrypt(objnum, gennum, str);
- }
- return CPDF_String::Create(str, TRUE);
- }
- if (word == FX_BSTRC("[")) {
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_ARRAY;
- }
- CPDF_Array* pArray = CPDF_Array::Create();
- while (1) {
- CPDF_Object* pObj = GetObject(pObjList, objnum, gennum);
- if (pObj == NULL) {
- if (m_WordBuffer[0] == ']') {
- return pArray;
- }
- if (pArray) {
- pArray->Release();
- }
- return NULL;
- }
- pArray->Add(pObj);
- }
- }
- if (word[0] == '/') {
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_NAME;
- }
- return CPDF_Name::Create(PDF_NameDecode(CFX_ByteStringC(m_WordBuffer + 1, m_WordSize - 1)));
- }
- if (word == FX_BSTRC("<<")) {
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_DICTIONARY;
- }
- if (pContext) {
- pContext->m_DictStart = SavedPos;
- }
- CPDF_Dictionary* pDict = CPDF_Dictionary::Create();
- while (1) {
- FX_BOOL bIsNumber;
- FX_FILESIZE SavedPos = m_Pos;
- CFX_ByteString key = GetNextWord(bIsNumber);
- if (key.IsEmpty()) {
- if (pDict) {
- pDict->Release();
- }
- return NULL;
- }
- if (key == FX_BSTRC(">>")) {
- break;
- }
- if (key == FX_BSTRC("endobj")) {
- m_Pos = SavedPos;
- break;
- }
- if (key[0] != '/') {
- continue;
- }
- key = PDF_NameDecode(key);
- CPDF_Object* pObj = GetObject(pObjList, objnum, gennum);
- if (pObj == NULL) {
- if (pDict) {
- pDict->Release();
- }
- uint8_t ch;
- while (1) {
- if (!GetNextChar(ch)) {
- break;
- }
- if (ch == 0x0A || ch == 0x0D) {
- break;
- }
- }
- return NULL;
- }
- if (key.GetLength() > 1) {
- pDict->AddValue(CFX_ByteStringC(key.c_str() + 1, key.GetLength() - 1), pObj);
- }
- }
- if (pContext) {
- pContext->m_DictEnd = m_Pos;
- if (pContext->m_Flags & PDFPARSE_NOSTREAM) {
- return pDict;
- }
- }
- FX_FILESIZE SavedPos = m_Pos;
- FX_BOOL bIsNumber;
- CFX_ByteString nextword = GetNextWord(bIsNumber);
- if (nextword == FX_BSTRC("stream")) {
- CPDF_Stream* pStream = ReadStream(pDict, pContext, objnum, gennum);
- if (pStream) {
- return pStream;
- }
- if (pDict) {
- pDict->Release();
- }
- return NULL;
- } else {
- m_Pos = SavedPos;
- return pDict;
- }
- }
- if (word == FX_BSTRC(">>")) {
- m_Pos = SavedPos;
- return NULL;
- }
- if (bTypeOnly) {
- return (CPDF_Object*)PDFOBJ_INVALID;
- }
- return NULL;
-}
-CPDF_Stream* CPDF_SyntaxParser::ReadStream(CPDF_Dictionary* pDict, PARSE_CONTEXT* pContext,
- FX_DWORD objnum, FX_DWORD gennum)
-{
- CPDF_Object* pLenObj = pDict->GetElement(FX_BSTRC("Length"));
- FX_FILESIZE len = 0;
- if (pLenObj && ((pLenObj->GetType() != PDFOBJ_REFERENCE) ||
- ((((CPDF_Reference*)pLenObj)->GetObjList() != NULL) &&
- ((CPDF_Reference*)pLenObj)->GetRefObjNum() != objnum))) {
- len = pLenObj->GetInteger();
- }
- ToNextLine();
- FX_FILESIZE StreamStartPos = m_Pos;
- if (pContext) {
- pContext->m_DataStart = m_Pos;
- }
+class CPDF_DataAvail final : public IPDF_DataAvail {
+ public:
+ CPDF_DataAvail(IFX_FileAvail* pFileAvail, IFX_FileRead* pFileRead);
+ ~CPDF_DataAvail();
- CPDF_CryptoHandler* pCryptoHandler = objnum == (FX_DWORD)m_MetadataObjnum ? NULL : m_pCryptoHandler;
- if (pCryptoHandler == NULL) {
- pdfium::base::CheckedNumeric<FX_FILESIZE> pos = m_Pos;
- pos += len;
- if (pos.IsValid() && pos.ValueOrDie() < m_FileLen) {
- m_Pos = pos.ValueOrDie();
- }
- GetNextWord();
- if (m_WordSize < 9 || FXSYS_memcmp(m_WordBuffer, "endstream", 9)) {
- m_Pos = StreamStartPos;
- FX_FILESIZE offset = FindTag(FX_BSTRC("endstream"), 0);
- if (offset >= 0) {
- FX_FILESIZE curPos = m_Pos;
- m_Pos = StreamStartPos;
- FX_FILESIZE endobjOffset = FindTag(FX_BSTRC("endobj"), 0);
- if (endobjOffset < offset && endobjOffset >= 0) {
- offset = endobjOffset;
- } else {
- m_Pos = curPos;
- }
- uint8_t byte1, byte2;
- GetCharAt(StreamStartPos + offset - 1, byte1);
- GetCharAt(StreamStartPos + offset - 2, byte2);
- if (byte1 == 0x0a && byte2 == 0x0d) {
- len -= 2;
- } else if (byte1 == 0x0a || byte1 == 0x0d) {
- len --;
- }
- len = (FX_DWORD)offset;
- pDict->SetAtInteger(FX_BSTRC("Length"), len);
- } else {
- m_Pos = StreamStartPos;
- if (FindTag(FX_BSTRC("endobj"), 0) < 0) {
- return NULL;
- }
- }
- }
- m_Pos = StreamStartPos;
- }
- CPDF_Stream* pStream;
- uint8_t* pData = FX_Alloc(uint8_t, len);
- ReadBlock(pData, len);
- if (pCryptoHandler) {
- CFX_BinaryBuf dest_buf;
- dest_buf.EstimateSize(pCryptoHandler->DecryptGetSize(len));
- void* context = pCryptoHandler->DecryptStart(objnum, gennum);
- pCryptoHandler->DecryptStream(context, pData, len, dest_buf);
- pCryptoHandler->DecryptFinish(context, dest_buf);
- FX_Free(pData);
- pData = dest_buf.GetBuffer();
- len = dest_buf.GetSize();
- dest_buf.DetachBuffer();
- }
- pStream = new CPDF_Stream(pData, len, pDict);
- if (pContext) {
- pContext->m_DataEnd = pContext->m_DataStart + len;
- }
- StreamStartPos = m_Pos;
- GetNextWord();
- if (m_WordSize == 6 && 0 == FXSYS_memcmp(m_WordBuffer, "endobj", 6)) {
- m_Pos = StreamStartPos;
- }
- return pStream;
-}
-void CPDF_SyntaxParser::InitParser(IFX_FileRead* pFileAccess, FX_DWORD HeaderOffset)
-{
- if (m_pFileBuf) {
- FX_Free(m_pFileBuf);
- m_pFileBuf = NULL;
- }
- m_pFileBuf = FX_Alloc(uint8_t, m_BufSize);
- m_HeaderOffset = HeaderOffset;
- m_FileLen = pFileAccess->GetSize();
- m_Pos = 0;
- m_pFileAccess = pFileAccess;
- m_BufOffset = 0;
- pFileAccess->ReadBlock(m_pFileBuf, 0, (size_t)((FX_FILESIZE)m_BufSize > m_FileLen ? m_FileLen : m_BufSize));
-}
-int32_t CPDF_SyntaxParser::GetDirectNum()
-{
- GetNextWord();
- if (!m_bIsNumber) {
- return 0;
- }
- m_WordBuffer[m_WordSize] = 0;
- return FXSYS_atoi((const FX_CHAR*)m_WordBuffer);
-}
-FX_BOOL CPDF_SyntaxParser::IsWholeWord(FX_FILESIZE startpos, FX_FILESIZE limit, const uint8_t* tag, FX_DWORD taglen)
-{
- uint8_t type = PDF_CharType[tag[0]];
- FX_BOOL bCheckLeft = type != 'D' && type != 'W';
- type = PDF_CharType[tag[taglen - 1]];
- FX_BOOL bCheckRight = type != 'D' && type != 'W';
- uint8_t ch;
- if (bCheckRight && startpos + (int32_t)taglen <= limit && GetCharAt(startpos + (int32_t)taglen, ch)) {
- uint8_t type = PDF_CharType[ch];
- if (type == 'N' || type == 'R') {
- return FALSE;
- }
- }
- if (bCheckLeft && startpos > 0 && GetCharAt(startpos - 1, ch)) {
- uint8_t type = PDF_CharType[ch];
- if (type == 'N' || type == 'R') {
- return FALSE;
- }
- }
- return TRUE;
-}
-FX_BOOL CPDF_SyntaxParser::SearchWord(const CFX_ByteStringC& tag, FX_BOOL bWholeWord, FX_BOOL bForward, FX_FILESIZE limit)
-{
- int32_t taglen = tag.GetLength();
- if (taglen == 0) {
- return FALSE;
- }
- FX_FILESIZE pos = m_Pos;
- int32_t offset = 0;
- if (!bForward) {
- offset = taglen - 1;
- }
- const uint8_t* tag_data = tag.GetPtr();
- uint8_t byte;
- while (1) {
- if (bForward) {
- if (limit) {
- if (pos >= m_Pos + limit) {
- return FALSE;
- }
- }
- if (!GetCharAt(pos, byte)) {
- return FALSE;
- }
- } else {
- if (limit) {
- if (pos <= m_Pos - limit) {
- return FALSE;
- }
- }
- if (!GetCharAtBackward(pos, byte)) {
- return FALSE;
- }
- }
- if (byte == tag_data[offset]) {
- if (bForward) {
- offset ++;
- if (offset < taglen) {
- pos ++;
- continue;
- }
- } else {
- offset --;
- if (offset >= 0) {
- pos --;
- continue;
- }
- }
- FX_FILESIZE startpos = bForward ? pos - taglen + 1 : pos;
- if (!bWholeWord || IsWholeWord(startpos, limit, tag.GetPtr(), taglen)) {
- m_Pos = startpos;
- return TRUE;
- }
- }
- if (bForward) {
- offset = byte == tag_data[0] ? 1 : 0;
- pos ++;
- } else {
- offset = byte == tag_data[taglen - 1] ? taglen - 2 : taglen - 1;
- pos --;
- }
- if (pos < 0) {
- return FALSE;
- }
- }
- return FALSE;
-}
-struct _SearchTagRecord {
- const uint8_t* m_pTag;
- FX_DWORD m_Len;
- FX_DWORD m_Offset;
-};
-int32_t CPDF_SyntaxParser::SearchMultiWord(const CFX_ByteStringC& tags, FX_BOOL bWholeWord, FX_FILESIZE limit)
-{
- int32_t ntags = 1, i;
- for (i = 0; i < tags.GetLength(); i ++)
- if (tags[i] == 0) {
- ntags ++;
- }
- _SearchTagRecord* pPatterns = FX_Alloc(_SearchTagRecord, ntags);
- FX_DWORD start = 0, itag = 0, max_len = 0;
- for (i = 0; i <= tags.GetLength(); i ++) {
- if (tags[i] == 0) {
- FX_DWORD len = i - start;
- if (len > max_len) {
- max_len = len;
- }
- pPatterns[itag].m_pTag = tags.GetPtr() + start;
- pPatterns[itag].m_Len = len;
- pPatterns[itag].m_Offset = 0;
- start = i + 1;
- itag ++;
- }
- }
- FX_FILESIZE pos = m_Pos;
- uint8_t byte;
- GetCharAt(pos++, byte);
- int32_t found = -1;
- while (1) {
- for (i = 0; i < ntags; i ++) {
- if (pPatterns[i].m_pTag[pPatterns[i].m_Offset] == byte) {
- pPatterns[i].m_Offset ++;
- if (pPatterns[i].m_Offset == pPatterns[i].m_Len) {
- if (!bWholeWord || IsWholeWord(pos - pPatterns[i].m_Len, limit, pPatterns[i].m_pTag, pPatterns[i].m_Len)) {
- found = i;
- goto end;
- } else {
- if (pPatterns[i].m_pTag[0] == byte) {
- pPatterns[i].m_Offset = 1;
- } else {
- pPatterns[i].m_Offset = 0;
- }
- }
- }
- } else {
- if (pPatterns[i].m_pTag[0] == byte) {
- pPatterns[i].m_Offset = 1;
- } else {
- pPatterns[i].m_Offset = 0;
- }
- }
- }
- if (limit && pos >= m_Pos + limit) {
- goto end;
- }
- if (!GetCharAt(pos, byte)) {
- goto end;
- }
- pos ++;
- }
-end:
- FX_Free(pPatterns);
- return found;
-}
-FX_FILESIZE CPDF_SyntaxParser::FindTag(const CFX_ByteStringC& tag, FX_FILESIZE limit)
-{
- int32_t taglen = tag.GetLength();
- int32_t match = 0;
- limit += m_Pos;
- FX_FILESIZE startpos = m_Pos;
- while (1) {
- uint8_t ch;
- if (!GetNextChar(ch)) {
- return -1;
- }
- if (ch == tag[match]) {
- match ++;
- if (match == taglen) {
- return m_Pos - startpos - taglen;
- }
- } else {
- match = ch == tag[0] ? 1 : 0;
- }
- if (limit && m_Pos == limit) {
- return -1;
- }
- }
- return -1;
-}
-void CPDF_SyntaxParser::GetBinary(uint8_t* buffer, FX_DWORD size)
-{
- FX_DWORD offset = 0;
- uint8_t ch;
- while (1) {
- if (!GetNextChar(ch)) {
- return;
- }
- buffer[offset++] = ch;
- if (offset == size) {
- break;
- }
- }
-}
+ virtual FX_BOOL IsDocAvail(IFX_DownloadHints* pHints) override;
-class CPDF_DataAvail final : public IPDF_DataAvail
-{
-public:
- CPDF_DataAvail(IFX_FileAvail* pFileAvail, IFX_FileRead* pFileRead);
- ~CPDF_DataAvail();
+ virtual void SetDocument(CPDF_Document* pDoc) override;
- virtual FX_BOOL IsDocAvail(IFX_DownloadHints* pHints) override;
+ virtual FX_BOOL IsPageAvail(int iPage, IFX_DownloadHints* pHints) override;
- virtual void SetDocument(CPDF_Document* pDoc) override;
+ virtual int32_t IsFormAvail(IFX_DownloadHints* pHints) override;
- virtual FX_BOOL IsPageAvail(int iPage, IFX_DownloadHints* pHints) override;
+ virtual int32_t IsLinearizedPDF() override;
- virtual int32_t IsFormAvail(IFX_DownloadHints *pHints) override;
+ virtual FX_BOOL IsLinearized() override { return m_bLinearized; }
- virtual int32_t IsLinearizedPDF() override;
-
- virtual FX_BOOL IsLinearized() override
- {
- return m_bLinearized;
- }
+ virtual void GetLinearizedMainXRefInfo(FX_FILESIZE* pPos,
+ FX_DWORD* pSize) override;
- virtual void GetLinearizedMainXRefInfo(FX_FILESIZE *pPos, FX_DWORD *pSize) override;
+ protected:
+ static const int kMaxDataAvailRecursionDepth = 64;
+ static int s_CurrentDataAvailRecursionDepth;
-protected:
- static const int kMaxDataAvailRecursionDepth = 64;
- static int s_CurrentDataAvailRecursionDepth;
+ FX_DWORD GetObjectSize(FX_DWORD objnum, FX_FILESIZE& offset);
+ FX_BOOL IsObjectsAvail(CFX_PtrArray& obj_array,
+ FX_BOOL bParsePage,
+ IFX_DownloadHints* pHints,
+ CFX_PtrArray& ret_array);
+ FX_BOOL CheckDocStatus(IFX_DownloadHints* pHints);
+ FX_BOOL CheckHeader(IFX_DownloadHints* pHints);
+ FX_BOOL CheckFirstPage(IFX_DownloadHints* pHints);
+ FX_BOOL CheckEnd(IFX_DownloadHints* pHints);
+ FX_BOOL CheckCrossRef(IFX_DownloadHints* pHints);
+ FX_BOOL CheckCrossRefItem(IFX_DownloadHints* pHints);
+ FX_BOOL CheckTrailer(IFX_DownloadHints* pHints);
+ FX_BOOL CheckRoot(IFX_DownloadHints* pHints);
+ FX_BOOL CheckInfo(IFX_DownloadHints* pHints);
+ FX_BOOL CheckPages(IFX_DownloadHints* pHints);
+ FX_BOOL CheckPage(IFX_DownloadHints* pHints);
+ FX_BOOL CheckResources(IFX_DownloadHints* pHints);
+ FX_BOOL CheckAnnots(IFX_DownloadHints* pHints);
+ FX_BOOL CheckAcroForm(IFX_DownloadHints* pHints);
+ FX_BOOL CheckAcroFormSubObject(IFX_DownloadHints* pHints);
+ FX_BOOL CheckTrailerAppend(IFX_DownloadHints* pHints);
+ FX_BOOL CheckPageStatus(IFX_DownloadHints* pHints);
+ FX_BOOL CheckAllCrossRefStream(IFX_DownloadHints* pHints);
- FX_DWORD GetObjectSize(FX_DWORD objnum, FX_FILESIZE& offset);
- FX_BOOL IsObjectsAvail(CFX_PtrArray& obj_array, FX_BOOL bParsePage, IFX_DownloadHints* pHints, CFX_PtrArray &ret_array);
- FX_BOOL CheckDocStatus(IFX_DownloadHints *pHints);
- FX_BOOL CheckHeader(IFX_DownloadHints* pHints);
- FX_BOOL CheckFirstPage(IFX_DownloadHints *pHints);
- FX_BOOL CheckEnd(IFX_DownloadHints *pHints);
- FX_BOOL CheckCrossRef(IFX_DownloadHints* pHints);
- FX_BOOL CheckCrossRefItem(IFX_DownloadHints *pHints);
- FX_BOOL CheckTrailer(IFX_DownloadHints* pHints);
- FX_BOOL CheckRoot(IFX_DownloadHints* pHints);
- FX_BOOL CheckInfo(IFX_DownloadHints* pHints);
- FX_BOOL CheckPages(IFX_DownloadHints* pHints);
- FX_BOOL CheckPage(IFX_DownloadHints* pHints);
- FX_BOOL CheckResources(IFX_DownloadHints* pHints);
- FX_BOOL CheckAnnots(IFX_DownloadHints* pHints);
- FX_BOOL CheckAcroForm(IFX_DownloadHints* pHints);
- FX_BOOL CheckAcroFormSubObject(IFX_DownloadHints* pHints);
- FX_BOOL CheckTrailerAppend(IFX_DownloadHints* pHints);
- FX_BOOL CheckPageStatus(IFX_DownloadHints* pHints);
- FX_BOOL CheckAllCrossRefStream(IFX_DownloadHints *pHints);
+ int32_t CheckCrossRefStream(IFX_DownloadHints* pHints,
+ FX_FILESIZE& xref_offset);
+ FX_BOOL IsLinearizedFile(uint8_t* pData, FX_DWORD dwLen);
+ void SetStartOffset(FX_FILESIZE dwOffset);
+ FX_BOOL GetNextToken(CFX_ByteString& token);
+ FX_BOOL GetNextChar(uint8_t& ch);
+ CPDF_Object* ParseIndirectObjectAt(FX_FILESIZE pos, FX_DWORD objnum);
+ CPDF_Object* GetObject(FX_DWORD objnum,
+ IFX_DownloadHints* pHints,
+ FX_BOOL* pExistInFile);
+ FX_BOOL GetPageKids(CPDF_Parser* pParser, CPDF_Object* pPages);
+ FX_BOOL PreparePageItem();
+ FX_BOOL LoadPages(IFX_DownloadHints* pHints);
+ FX_BOOL LoadAllXref(IFX_DownloadHints* pHints);
+ FX_BOOL LoadAllFile(IFX_DownloadHints* pHints);
+ FX_BOOL CheckLinearizedData(IFX_DownloadHints* pHints);
+ FX_BOOL CheckFileResources(IFX_DownloadHints* pHints);
+ FX_BOOL CheckPageAnnots(int iPage, IFX_DownloadHints* pHints);
- int32_t CheckCrossRefStream(IFX_DownloadHints *pHints, FX_FILESIZE &xref_offset);
- FX_BOOL IsLinearizedFile(uint8_t* pData, FX_DWORD dwLen);
- void SetStartOffset(FX_FILESIZE dwOffset);
- FX_BOOL GetNextToken(CFX_ByteString &token);
- FX_BOOL GetNextChar(uint8_t &ch);
- CPDF_Object * ParseIndirectObjectAt(FX_FILESIZE pos, FX_DWORD objnum);
- CPDF_Object * GetObject(FX_DWORD objnum, IFX_DownloadHints* pHints, FX_BOOL *pExistInFile);
- FX_BOOL GetPageKids(CPDF_Parser *pParser, CPDF_Object *pPages);
- FX_BOOL PreparePageItem();
- FX_BOOL LoadPages(IFX_DownloadHints* pHints);
- FX_BOOL LoadAllXref(IFX_DownloadHints* pHints);
- FX_BOOL LoadAllFile(IFX_DownloadHints* pHints);
- FX_BOOL CheckLinearizedData(IFX_DownloadHints* pHints);
- FX_BOOL CheckFileResources(IFX_DownloadHints* pHints);
- FX_BOOL CheckPageAnnots(int iPage, IFX_DownloadHints* pHints);
+ FX_BOOL CheckLinearizedFirstPage(int iPage, IFX_DownloadHints* pHints);
+ FX_BOOL HaveResourceAncestor(CPDF_Dictionary* pDict);
+ FX_BOOL CheckPage(int32_t iPage, IFX_DownloadHints* pHints);
+ FX_BOOL LoadDocPages(IFX_DownloadHints* pHints);
+ FX_BOOL LoadDocPage(int32_t iPage, IFX_DownloadHints* pHints);
+ FX_BOOL CheckPageNode(CPDF_PageNode& pageNodes,
+ int32_t iPage,
+ int32_t& iCount,
+ IFX_DownloadHints* pHints);
+ FX_BOOL CheckUnkownPageNode(FX_DWORD dwPageNo,
+ CPDF_PageNode* pPageNode,
+ IFX_DownloadHints* pHints);
+ FX_BOOL CheckArrayPageNode(FX_DWORD dwPageNo,
+ CPDF_PageNode* pPageNode,
+ IFX_DownloadHints* pHints);
+ FX_BOOL CheckPageCount(IFX_DownloadHints* pHints);
+ FX_BOOL IsFirstCheck(int iPage);
+ void ResetFirstCheck(int iPage);
- FX_BOOL CheckLinearizedFirstPage(int iPage, IFX_DownloadHints* pHints);
- FX_BOOL HaveResourceAncestor(CPDF_Dictionary *pDict);
- FX_BOOL CheckPage(int32_t iPage, IFX_DownloadHints* pHints);
- FX_BOOL LoadDocPages(IFX_DownloadHints* pHints);
- FX_BOOL LoadDocPage(int32_t iPage, IFX_DownloadHints* pHints);
- FX_BOOL CheckPageNode(CPDF_PageNode &pageNodes, int32_t iPage, int32_t &iCount, IFX_DownloadHints* pHints);
- FX_BOOL CheckUnkownPageNode(FX_DWORD dwPageNo, CPDF_PageNode *pPageNode, IFX_DownloadHints* pHints);
- FX_BOOL CheckArrayPageNode(FX_DWORD dwPageNo, CPDF_PageNode *pPageNode, IFX_DownloadHints* pHints);
- FX_BOOL CheckPageCount(IFX_DownloadHints* pHints);
- FX_BOOL IsFirstCheck(int iPage);
- void ResetFirstCheck(int iPage);
+ CPDF_Parser m_parser;
- CPDF_Parser m_parser;
+ CPDF_SyntaxParser m_syntaxParser;
- CPDF_SyntaxParser m_syntaxParser;
+ CPDF_Object* m_pRoot;
- CPDF_Object *m_pRoot;
+ FX_DWORD m_dwRootObjNum;
- FX_DWORD m_dwRootObjNum;
+ FX_DWORD m_dwInfoObjNum;
- FX_DWORD m_dwInfoObjNum;
+ CPDF_Object* m_pLinearized;
- CPDF_Object *m_pLinearized;
+ CPDF_Object* m_pTrailer;
- CPDF_Object *m_pTrailer;
+ FX_BOOL m_bDocAvail;
- FX_BOOL m_bDocAvail;
+ FX_FILESIZE m_dwHeaderOffset;
- FX_FILESIZE m_dwHeaderOffset;
+ FX_FILESIZE m_dwLastXRefOffset;
- FX_FILESIZE m_dwLastXRefOffset;
+ FX_FILESIZE m_dwXRefOffset;
- FX_FILESIZE m_dwXRefOffset;
+ FX_FILESIZE m_dwTrailerOffset;
- FX_FILESIZE m_dwTrailerOffset;
+ FX_FILESIZE m_dwCurrentOffset;
- FX_FILESIZE m_dwCurrentOffset;
+ PDF_DATAAVAIL_STATUS m_docStatus;
- PDF_DATAAVAIL_STATUS m_docStatus;
+ FX_FILESIZE m_dwFileLen;
- FX_FILESIZE m_dwFileLen;
+ CPDF_Document* m_pDocument;
- CPDF_Document* m_pDocument;
+ CPDF_SortObjNumArray m_objnum_array;
- CPDF_SortObjNumArray m_objnum_array;
+ CFX_PtrArray m_objs_array;
- CFX_PtrArray m_objs_array;
+ FX_FILESIZE m_Pos;
- FX_FILESIZE m_Pos;
+ FX_FILESIZE m_bufferOffset;
- FX_FILESIZE m_bufferOffset;
+ FX_DWORD m_bufferSize;
- FX_DWORD m_bufferSize;
+ CFX_ByteString m_WordBuf;
- CFX_ByteString m_WordBuf;
+ uint8_t m_WordBuffer[257];
- uint8_t m_WordBuffer[257];
+ FX_DWORD m_WordSize;
- FX_DWORD m_WordSize;
+ uint8_t m_bufferData[512];
- uint8_t m_bufferData[512];
+ CFX_FileSizeArray m_CrossOffset;
- CFX_FileSizeArray m_CrossOffset;
+ CFX_DWordArray m_XRefStreamList;
- CFX_DWordArray m_XRefStreamList;
+ CFX_DWordArray m_PageObjList;
- CFX_DWordArray m_PageObjList;
+ FX_DWORD m_PagesObjNum;
- FX_DWORD m_PagesObjNum;
+ FX_BOOL m_bLinearized;
- FX_BOOL m_bLinearized;
+ FX_DWORD m_dwFirstPageNo;
- FX_DWORD m_dwFirstPageNo;
+ FX_BOOL m_bLinearedDataOK;
- FX_BOOL m_bLinearedDataOK;
+ FX_BOOL m_bMainXRefLoadTried;
- FX_BOOL m_bMainXRefLoadTried;
+ FX_BOOL m_bMainXRefLoadedOK;
- FX_BOOL m_bMainXRefLoadedOK;
+ FX_BOOL m_bPagesTreeLoad;
- FX_BOOL m_bPagesTreeLoad;
+ FX_BOOL m_bPagesLoad;
- FX_BOOL m_bPagesLoad;
+ CPDF_Parser* m_pCurrentParser;
- CPDF_Parser * m_pCurrentParser;
+ FX_FILESIZE m_dwCurrentXRefSteam;
- FX_FILESIZE m_dwCurrentXRefSteam;
+ FX_BOOL m_bAnnotsLoad;
- FX_BOOL m_bAnnotsLoad;
+ FX_BOOL m_bHaveAcroForm;
- FX_BOOL m_bHaveAcroForm;
+ FX_DWORD m_dwAcroFormObjNum;
- FX_DWORD m_dwAcroFormObjNum;
+ FX_BOOL m_bAcroFormLoad;
- FX_BOOL m_bAcroFormLoad;
+ CPDF_Object* m_pAcroForm;
- CPDF_Object * m_pAcroForm;
+ CFX_PtrArray m_arrayAcroforms;
- CFX_PtrArray m_arrayAcroforms;
+ CPDF_Dictionary* m_pPageDict;
- CPDF_Dictionary * m_pPageDict;
+ CPDF_Object* m_pPageResource;
- CPDF_Object * m_pPageResource;
+ FX_BOOL m_bNeedDownLoadResource;
- FX_BOOL m_bNeedDownLoadResource;
+ FX_BOOL m_bPageLoadedOK;
- FX_BOOL m_bPageLoadedOK;
+ FX_BOOL m_bLinearizedFormParamLoad;
- FX_BOOL m_bLinearizedFormParamLoad;
+ CFX_PtrArray m_PagesArray;
- CFX_PtrArray m_PagesArray;
+ FX_DWORD m_dwEncryptObjNum;
- FX_DWORD m_dwEncryptObjNum;
+ FX_FILESIZE m_dwPrevXRefOffset;
- FX_FILESIZE m_dwPrevXRefOffset;
+ FX_BOOL m_bTotalLoadPageTree;
- FX_BOOL m_bTotalLoadPageTree;
+ FX_BOOL m_bCurPageDictLoadOK;
- FX_BOOL m_bCurPageDictLoadOK;
+ CPDF_PageNode m_pageNodes;
- CPDF_PageNode m_pageNodes;
+ CFX_CMapDWordToDWord* m_pageMapCheckState;
- CFX_CMapDWordToDWord * m_pageMapCheckState;
-
- CFX_CMapDWordToDWord * m_pagesLoadState;
+ CFX_CMapDWordToDWord* m_pagesLoadState;
};
-IPDF_DataAvail::IPDF_DataAvail(IFX_FileAvail* pFileAvail, IFX_FileRead* pFileRead) :
- m_pFileAvail(pFileAvail),
- m_pFileRead(pFileRead) {
-}
+IPDF_DataAvail::IPDF_DataAvail(IFX_FileAvail* pFileAvail,
+ IFX_FileRead* pFileRead)
+ : m_pFileAvail(pFileAvail), m_pFileRead(pFileRead) {}
// static
-IPDF_DataAvail* IPDF_DataAvail::Create(IFX_FileAvail* pFileAvail, IFX_FileRead* pFileRead)
-{
+IPDF_DataAvail* IPDF_DataAvail::Create(IFX_FileAvail* pFileAvail,
+ IFX_FileRead* pFileRead) {
return new CPDF_DataAvail(pFileAvail, pFileRead);
}
// static
int CPDF_DataAvail::s_CurrentDataAvailRecursionDepth = 0;
-CPDF_DataAvail::CPDF_DataAvail(IFX_FileAvail* pFileAvail, IFX_FileRead* pFileRead)
- : IPDF_DataAvail(pFileAvail, pFileRead)
-{
- m_Pos = 0;
- m_dwFileLen = 0;
- if (m_pFileRead) {
- m_dwFileLen = (FX_DWORD)m_pFileRead->GetSize();
- }
- m_dwCurrentOffset = 0;
- m_WordSize = 0;
- m_dwXRefOffset = 0;
- m_bufferOffset = 0;
- m_dwFirstPageNo = 0;
- m_bufferSize = 0;
- m_PagesObjNum = 0;
- m_dwCurrentXRefSteam = 0;
- m_dwAcroFormObjNum = 0;
- m_dwInfoObjNum = 0;
- m_pDocument = 0;
- m_dwEncryptObjNum = 0;
- m_dwPrevXRefOffset = 0;
- m_dwLastXRefOffset = 0;
- m_bDocAvail = FALSE;
- m_bMainXRefLoadTried = FALSE;
- m_bDocAvail = FALSE;
- m_bLinearized = FALSE;
- m_bPagesLoad = FALSE;
- m_bPagesTreeLoad = FALSE;
- m_bMainXRefLoadedOK = FALSE;
- m_bAnnotsLoad = FALSE;
- m_bHaveAcroForm = FALSE;
- m_bAcroFormLoad = FALSE;
- m_bPageLoadedOK = FALSE;
- m_bNeedDownLoadResource = FALSE;
- m_bLinearizedFormParamLoad = FALSE;
- m_pLinearized = NULL;
- m_pRoot = NULL;
- m_pTrailer = NULL;
- m_pCurrentParser = NULL;
- m_pAcroForm = NULL;
- m_pPageDict = NULL;
- m_pPageResource = NULL;
- m_pageMapCheckState = NULL;
- m_docStatus = PDF_DATAAVAIL_HEADER;
- m_parser.m_bOwnFileRead = FALSE;
- m_bTotalLoadPageTree = FALSE;
- m_bCurPageDictLoadOK = FALSE;
- m_bLinearedDataOK = FALSE;
- m_pagesLoadState = NULL;
+CPDF_DataAvail::CPDF_DataAvail(IFX_FileAvail* pFileAvail,
+ IFX_FileRead* pFileRead)
+ : IPDF_DataAvail(pFileAvail, pFileRead) {
+ m_Pos = 0;
+ m_dwFileLen = 0;
+ if (m_pFileRead) {
+ m_dwFileLen = (FX_DWORD)m_pFileRead->GetSize();
+ }
+ m_dwCurrentOffset = 0;
+ m_WordSize = 0;
+ m_dwXRefOffset = 0;
+ m_bufferOffset = 0;
+ m_dwFirstPageNo = 0;
+ m_bufferSize = 0;
+ m_PagesObjNum = 0;
+ m_dwCurrentXRefSteam = 0;
+ m_dwAcroFormObjNum = 0;
+ m_dwInfoObjNum = 0;
+ m_pDocument = 0;
+ m_dwEncryptObjNum = 0;
+ m_dwPrevXRefOffset = 0;
+ m_dwLastXRefOffset = 0;
+ m_bDocAvail = FALSE;
+ m_bMainXRefLoadTried = FALSE;
+ m_bDocAvail = FALSE;
+ m_bLinearized = FALSE;
+ m_bPagesLoad = FALSE;
+ m_bPagesTreeLoad = FALSE;
+ m_bMainXRefLoadedOK = FALSE;
+ m_bAnnotsLoad = FALSE;
+ m_bHaveAcroForm = FALSE;
+ m_bAcroFormLoad = FALSE;
+ m_bPageLoadedOK = FALSE;
+ m_bNeedDownLoadResource = FALSE;
+ m_bLinearizedFormParamLoad = FALSE;
+ m_pLinearized = NULL;
+ m_pRoot = NULL;
+ m_pTrailer = NULL;
+ m_pCurrentParser = NULL;
+ m_pAcroForm = NULL;
+ m_pPageDict = NULL;
+ m_pPageResource = NULL;
+ m_pageMapCheckState = NULL;
+ m_docStatus = PDF_DATAAVAIL_HEADER;
+ m_parser.m_bOwnFileRead = FALSE;
+ m_bTotalLoadPageTree = FALSE;
+ m_bCurPageDictLoadOK = FALSE;
+ m_bLinearedDataOK = FALSE;
+ m_pagesLoadState = NULL;
}
-CPDF_DataAvail::~CPDF_DataAvail()
-{
- if (m_pLinearized) {
- m_pLinearized->Release();
- }
- if (m_pRoot) {
- m_pRoot->Release();
- }
- if (m_pTrailer) {
- m_pTrailer->Release();
- }
- delete m_pageMapCheckState;
- delete m_pagesLoadState;
- int32_t i = 0;
- int32_t iSize = m_arrayAcroforms.GetSize();
- for (i = 0; i < iSize; ++i) {
- ((CPDF_Object *)m_arrayAcroforms.GetAt(i))->Release();
- }
+CPDF_DataAvail::~CPDF_DataAvail() {
+ if (m_pLinearized) {
+ m_pLinearized->Release();
+ }
+ if (m_pRoot) {
+ m_pRoot->Release();
+ }
+ if (m_pTrailer) {
+ m_pTrailer->Release();
+ }
+ delete m_pageMapCheckState;
+ delete m_pagesLoadState;
+ int32_t i = 0;
+ int32_t iSize = m_arrayAcroforms.GetSize();
+ for (i = 0; i < iSize; ++i) {
+ ((CPDF_Object*)m_arrayAcroforms.GetAt(i))->Release();
+ }
}
-void CPDF_DataAvail::SetDocument(CPDF_Document* pDoc)
-{
- m_pDocument = pDoc;
+void CPDF_DataAvail::SetDocument(CPDF_Document* pDoc) {
+ m_pDocument = pDoc;
}
-FX_DWORD CPDF_DataAvail::GetObjectSize(FX_DWORD objnum, FX_FILESIZE& offset)
-{
- CPDF_Parser *pParser = (CPDF_Parser *)(m_pDocument->GetParser());
- if (pParser == NULL) {
- return 0;
- }
- if (objnum >= (FX_DWORD)pParser->m_CrossRef.GetSize()) {
- return 0;
+FX_DWORD CPDF_DataAvail::GetObjectSize(FX_DWORD objnum, FX_FILESIZE& offset) {
+ CPDF_Parser* pParser = (CPDF_Parser*)(m_pDocument->GetParser());
+ if (pParser == NULL) {
+ return 0;
+ }
+ if (objnum >= (FX_DWORD)pParser->m_CrossRef.GetSize()) {
+ return 0;
+ }
+ if (pParser->m_V5Type[objnum] == 2) {
+ objnum = (FX_DWORD)pParser->m_CrossRef[objnum];
+ }
+ if (pParser->m_V5Type[objnum] == 1 || pParser->m_V5Type[objnum] == 255) {
+ offset = pParser->m_CrossRef[objnum];
+ if (offset == 0) {
+ return 0;
+ }
+ void* pResult = FXSYS_bsearch(&offset, pParser->m_SortedOffset.GetData(),
+ pParser->m_SortedOffset.GetSize(),
+ sizeof(FX_FILESIZE), _CompareFileSize);
+ if (pResult == NULL) {
+ return 0;
}
- if (pParser->m_V5Type[objnum] == 2) {
- objnum = (FX_DWORD)pParser->m_CrossRef[objnum];
+ if ((FX_FILESIZE*)pResult -
+ (FX_FILESIZE*)pParser->m_SortedOffset.GetData() ==
+ pParser->m_SortedOffset.GetSize() - 1) {
+ return 0;
}
- if (pParser->m_V5Type[objnum] == 1 || pParser->m_V5Type[objnum] == 255) {
- offset = pParser->m_CrossRef[objnum];
- if (offset == 0) {
- return 0;
- }
- void* pResult = FXSYS_bsearch(&offset, pParser->m_SortedOffset.GetData(), pParser->m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize);
- if (pResult == NULL) {
- return 0;
- }
- if ((FX_FILESIZE*)pResult - (FX_FILESIZE*)pParser->m_SortedOffset.GetData() == pParser->m_SortedOffset.GetSize() - 1) {
- return 0;
- }
- return (FX_DWORD)(((FX_FILESIZE*)pResult)[1] - offset);
- }
- return 0;
+ return (FX_DWORD)(((FX_FILESIZE*)pResult)[1] - offset);
+ }
+ return 0;
}
-FX_BOOL CPDF_DataAvail::IsObjectsAvail(CFX_PtrArray& obj_array, FX_BOOL bParsePage, IFX_DownloadHints* pHints, CFX_PtrArray &ret_array)
-{
- if (!obj_array.GetSize()) {
- return TRUE;
- }
- FX_DWORD count = 0;
- CFX_PtrArray new_obj_array;
- int32_t i = 0;
- for (i = 0; i < obj_array.GetSize(); i++) {
- CPDF_Object *pObj = (CPDF_Object *)obj_array[i];
- if (!pObj) {
- continue;
+FX_BOOL CPDF_DataAvail::IsObjectsAvail(CFX_PtrArray& obj_array,
+ FX_BOOL bParsePage,
+ IFX_DownloadHints* pHints,
+ CFX_PtrArray& ret_array) {
+ if (!obj_array.GetSize()) {
+ return TRUE;
+ }
+ FX_DWORD count = 0;
+ CFX_PtrArray new_obj_array;
+ int32_t i = 0;
+ for (i = 0; i < obj_array.GetSize(); i++) {
+ CPDF_Object* pObj = (CPDF_Object*)obj_array[i];
+ if (!pObj) {
+ continue;
+ }
+ int32_t type = pObj->GetType();
+ switch (type) {
+ case PDFOBJ_ARRAY: {
+ CPDF_Array* pArray = pObj->GetArray();
+ for (FX_DWORD k = 0; k < pArray->GetCount(); k++) {
+ new_obj_array.Add(pArray->GetElement(k));
+ }
+ } break;
+ case PDFOBJ_STREAM:
+ pObj = pObj->GetDict();
+ case PDFOBJ_DICTIONARY: {
+ CPDF_Dictionary* pDict = pObj->GetDict();
+ if (pDict && pDict->GetString("Type") == "Page" && !bParsePage) {
+ continue;
+ }
+ FX_POSITION pos = pDict->GetStartPos();
+ while (pos) {
+ CPDF_Object* value;
+ CFX_ByteString key;
+ value = pDict->GetNextElement(pos, key);
+ if (key != "Parent") {
+ new_obj_array.Add(value);
+ }
+ }
+ } break;
+ case PDFOBJ_REFERENCE: {
+ CPDF_Reference* pRef = (CPDF_Reference*)pObj;
+ FX_DWORD dwNum = pRef->GetRefObjNum();
+ FX_FILESIZE offset;
+ FX_DWORD original_size = GetObjectSize(dwNum, offset);
+ pdfium::base::CheckedNumeric<FX_DWORD> size = original_size;
+ if (size.ValueOrDefault(0) == 0 || offset < 0 ||
+ offset >= m_dwFileLen) {
+ break;
}
- int32_t type = pObj->GetType();
- switch (type) {
- case PDFOBJ_ARRAY: {
- CPDF_Array *pArray = pObj->GetArray();
- for (FX_DWORD k = 0; k < pArray->GetCount(); k++) {
- new_obj_array.Add(pArray->GetElement(k));
- }
- }
- break;
- case PDFOBJ_STREAM:
- pObj = pObj->GetDict();
- case PDFOBJ_DICTIONARY: {
- CPDF_Dictionary *pDict = pObj->GetDict();
- if (pDict && pDict->GetString("Type") == "Page" && !bParsePage) {
- continue;
- }
- FX_POSITION pos = pDict->GetStartPos();
- while (pos) {
- CPDF_Object *value;
- CFX_ByteString key;
- value = pDict->GetNextElement(pos, key);
- if (key != "Parent") {
- new_obj_array.Add(value);
- }
- }
- }
- break;
- case PDFOBJ_REFERENCE: {
- CPDF_Reference *pRef = (CPDF_Reference*)pObj;
- FX_DWORD dwNum = pRef->GetRefObjNum();
- FX_FILESIZE offset;
- FX_DWORD original_size = GetObjectSize(dwNum, offset);
- pdfium::base::CheckedNumeric<FX_DWORD> size = original_size;
- if (size.ValueOrDefault(0) == 0 || offset < 0 || offset >= m_dwFileLen) {
- break;
- }
- size += offset;
- size += 512;
- if (!size.IsValid()) {
- break;
- }
- if (size.ValueOrDie() > m_dwFileLen) {
- size = m_dwFileLen - offset;
- } else {
- size = original_size + 512;
- }
- if (!size.IsValid()) {
- break;
- }
- if (!m_pFileAvail->IsDataAvail(offset, size.ValueOrDie())) {
- pHints->AddSegment(offset, size.ValueOrDie());
- ret_array.Add(pObj);
- count++;
- } else if (!m_objnum_array.Find(dwNum)) {
- m_objnum_array.AddObjNum(dwNum);
- CPDF_Object *pReferred = m_pDocument->GetIndirectObject(pRef->GetRefObjNum(), NULL);
- if (pReferred) {
- new_obj_array.Add(pReferred);
- }
- }
- }
- break;
+ size += offset;
+ size += 512;
+ if (!size.IsValid()) {
+ break;
}
+ if (size.ValueOrDie() > m_dwFileLen) {
+ size = m_dwFileLen - offset;
+ } else {
+ size = original_size + 512;
+ }
+ if (!size.IsValid()) {
+ break;
+ }
+ if (!m_pFileAvail->IsDataAvail(offset, size.ValueOrDie())) {
+ pHints->AddSegment(offset, size.ValueOrDie());
+ ret_array.Add(pObj);
+ count++;
+ } else if (!m_objnum_array.Find(dwNum)) {
+ m_objnum_array.AddObjNum(dwNum);
+ CPDF_Object* pReferred =
+ m_pDocument->GetIndirectObject(pRef->GetRefObjNum(), NULL);
+ if (pReferred) {
+ new_obj_array.Add(pReferred);
+ }
+ }
+ } break;
+ }
+ }
+ if (count > 0) {
+ int32_t iSize = new_obj_array.GetSize();
+ for (i = 0; i < iSize; ++i) {
+ CPDF_Object* pObj = (CPDF_Object*)new_obj_array[i];
+ int32_t type = pObj->GetType();
+ if (type == PDFOBJ_REFERENCE) {
+ CPDF_Reference* pRef = (CPDF_Reference*)pObj;
+ FX_DWORD dwNum = pRef->GetRefObjNum();
+ if (!m_objnum_array.Find(dwNum)) {
+ ret_array.Add(pObj);
+ }
+ } else {
+ ret_array.Add(pObj);
+ }
}
- if (count > 0) {
- int32_t iSize = new_obj_array.GetSize();
- for (i = 0; i < iSize; ++i) {
- CPDF_Object *pObj = (CPDF_Object *)new_obj_array[i];
- int32_t type = pObj->GetType();
- if (type == PDFOBJ_REFERENCE) {
- CPDF_Reference *pRef = (CPDF_Reference *)pObj;
- FX_DWORD dwNum = pRef->GetRefObjNum();
- if (!m_objnum_array.Find(dwNum)) {
- ret_array.Add(pObj);
- }
- } else {
- ret_array.Add(pObj);
- }
- }
- return FALSE;
- }
- obj_array.RemoveAll();
- obj_array.Append(new_obj_array);
- return IsObjectsAvail(obj_array, FALSE, pHints, ret_array);
+ return FALSE;
+ }
+ obj_array.RemoveAll();
+ obj_array.Append(new_obj_array);
+ return IsObjectsAvail(obj_array, FALSE, pHints, ret_array);
}
-FX_BOOL CPDF_DataAvail::IsDocAvail(IFX_DownloadHints* pHints)
-{
- if (!m_dwFileLen && m_pFileRead) {
- m_dwFileLen = (FX_DWORD)m_pFileRead->GetSize();
- if (!m_dwFileLen) {
- return TRUE;
- }
- }
- while (!m_bDocAvail) {
- if (!CheckDocStatus(pHints)) {
- return FALSE;
- }
- }
- return TRUE;
+FX_BOOL CPDF_DataAvail::IsDocAvail(IFX_DownloadHints* pHints) {
+ if (!m_dwFileLen && m_pFileRead) {
+ m_dwFileLen = (FX_DWORD)m_pFileRead->GetSize();
+ if (!m_dwFileLen) {
+ return TRUE;
+ }
+ }
+ while (!m_bDocAvail) {
+ if (!CheckDocStatus(pHints)) {
+ return FALSE;
+ }
+ }
+ return TRUE;
}
-FX_BOOL CPDF_DataAvail::CheckAcroFormSubObject(IFX_DownloadHints* pHints)
-{
- if (!m_objs_array.GetSize()) {
- m_objs_array.RemoveAll();
- m_objnum_array.RemoveAll();
- CFX_PtrArray obj_array;
- obj_array.Append(m_arrayAcroforms);
- FX_BOOL bRet = IsObjectsAvail(obj_array, FALSE, pHints, m_objs_array);
- if (bRet) {
- m_objs_array.RemoveAll();
- }
- return bRet;
- }
- CFX_PtrArray new_objs_array;
- FX_BOOL bRet = IsObjectsAvail(m_objs_array, FALSE, pHints, new_objs_array);
+FX_BOOL CPDF_DataAvail::CheckAcroFormSubObject(IFX_DownloadHints* pHints) {
+ if (!m_objs_array.GetSize()) {
+ m_objs_array.RemoveAll();
+ m_objnum_array.RemoveAll();
+ CFX_PtrArray obj_array;
+ obj_array.Append(m_arrayAcroforms);
+ FX_BOOL bRet = IsObjectsAvail(obj_array, FALSE, pHints, m_objs_array);
if (bRet) {
- int32_t iSize = m_arrayAcroforms.GetSize();
- for (int32_t i = 0; i < iSize; ++i) {
- ((CPDF_Object *)m_arrayAcroforms.GetAt(i))->Release();
- }
- m_arrayAcroforms.RemoveAll();
- } else {
- m_objs_array.RemoveAll();
- m_objs_array.Append(new_objs_array);
+ m_objs_array.RemoveAll();
}
return bRet;
-}
-FX_BOOL CPDF_DataAvail::CheckAcroForm(IFX_DownloadHints* pHints)
-{
- FX_BOOL bExist = FALSE;
- m_pAcroForm = GetObject(m_dwAcroFormObjNum, pHints, &bExist);
- if (!bExist) {
- m_docStatus = PDF_DATAAVAIL_PAGETREE;
- return TRUE;
- }
- if (!m_pAcroForm) {
- if (m_docStatus == PDF_DATAAVAIL_ERROR) {
- m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
- return TRUE;
- }
- return FALSE;
+ }
+ CFX_PtrArray new_objs_array;
+ FX_BOOL bRet = IsObjectsAvail(m_objs_array, FALSE, pHints, new_objs_array);
+ if (bRet) {
+ int32_t iSize = m_arrayAcroforms.GetSize();
+ for (int32_t i = 0; i < iSize; ++i) {
+ ((CPDF_Object*)m_arrayAcroforms.GetAt(i))->Release();
}
- m_arrayAcroforms.Add(m_pAcroForm);
+ m_arrayAcroforms.RemoveAll();
+ } else {
+ m_objs_array.RemoveAll();
+ m_objs_array.Append(new_objs_array);
+ }
+ return bRet;
+}
+FX_BOOL CPDF_DataAvail::CheckAcroForm(IFX_DownloadHints* pHints) {
+ FX_BOOL bExist = FALSE;
+ m_pAcroForm = GetObject(m_dwAcroFormObjNum, pHints, &bExist);
+ if (!bExist) {
m_docStatus = PDF_DATAAVAIL_PAGETREE;
return TRUE;
-}
-FX_BOOL CPDF_DataAvail::CheckDocStatus(IFX_DownloadHints *pHints)
-{
- switch (m_docStatus) {
- case PDF_DATAAVAIL_HEADER:
- return CheckHeader(pHints);
- case PDF_DATAAVAIL_FIRSTPAGE:
- case PDF_DATAAVAIL_FIRSTPAGE_PREPARE:
- return CheckFirstPage(pHints);
- case PDF_DATAAVAIL_END:
- return CheckEnd(pHints);
- case PDF_DATAAVAIL_CROSSREF:
- return CheckCrossRef(pHints);
- case PDF_DATAAVAIL_CROSSREF_ITEM:
- return CheckCrossRefItem(pHints);
- case PDF_DATAAVAIL_CROSSREF_STREAM:
- return CheckAllCrossRefStream(pHints);
- case PDF_DATAAVAIL_TRAILER:
- return CheckTrailer(pHints);
- case PDF_DATAAVAIL_TRAILER_APPEND:
- return CheckTrailerAppend(pHints);
- case PDF_DATAAVAIL_LOADALLCRSOSSREF:
- return LoadAllXref(pHints);
- case PDF_DATAAVAIL_LOADALLFILE:
- return LoadAllFile(pHints);
- case PDF_DATAAVAIL_ROOT:
- return CheckRoot(pHints);
- case PDF_DATAAVAIL_INFO:
- return CheckInfo(pHints);
- case PDF_DATAAVAIL_ACROFORM:
- return CheckAcroForm(pHints);
- case PDF_DATAAVAIL_PAGETREE:
- if (m_bTotalLoadPageTree) {
- return CheckPages(pHints);
- }
- return LoadDocPages(pHints);
- case PDF_DATAAVAIL_PAGE:
- if (m_bTotalLoadPageTree) {
- return CheckPage(pHints);
- }
- m_docStatus = PDF_DATAAVAIL_PAGE_LATERLOAD;
- return TRUE;
- case PDF_DATAAVAIL_ERROR:
- return LoadAllFile(pHints);
- case PDF_DATAAVAIL_PAGE_LATERLOAD:
- m_docStatus = PDF_DATAAVAIL_PAGE;
- default:
- m_bDocAvail = TRUE;
- return TRUE;
+ }
+ if (!m_pAcroForm) {
+ if (m_docStatus == PDF_DATAAVAIL_ERROR) {
+ m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
+ return TRUE;
}
+ return FALSE;
+ }
+ m_arrayAcroforms.Add(m_pAcroForm);
+ m_docStatus = PDF_DATAAVAIL_PAGETREE;
+ return TRUE;
}
-FX_BOOL CPDF_DataAvail::CheckPageStatus(IFX_DownloadHints* pHints)
-{
- switch (m_docStatus) {
- case PDF_DATAAVAIL_PAGETREE:
- return CheckPages(pHints);
- case PDF_DATAAVAIL_PAGE:
- return CheckPage(pHints);
- case PDF_DATAAVAIL_ERROR:
- return LoadAllFile(pHints);
- default:
- m_bPagesTreeLoad = TRUE;
- m_bPagesLoad = TRUE;
- return TRUE;
- }
+FX_BOOL CPDF_DataAvail::CheckDocStatus(IFX_DownloadHints* pHints) {
+ switch (m_docStatus) {
+ case PDF_DATAAVAIL_HEADER:
+ return CheckHeader(pHints);
+ case PDF_DATAAVAIL_FIRSTPAGE:
+ case PDF_DATAAVAIL_FIRSTPAGE_PREPARE:
+ return CheckFirstPage(pHints);
+ case PDF_DATAAVAIL_END:
+ return CheckEnd(pHints);
+ case PDF_DATAAVAIL_CROSSREF:
+ return CheckCrossRef(pHints);
+ case PDF_DATAAVAIL_CROSSREF_ITEM:
+ return CheckCrossRefItem(pHints);
+ case PDF_DATAAVAIL_CROSSREF_STREAM:
+ return CheckAllCrossRefStream(pHints);
+ case PDF_DATAAVAIL_TRAILER:
+ return CheckTrailer(pHints);
+ case PDF_DATAAVAIL_TRAILER_APPEND:
+ return CheckTrailerAppend(pHints);
+ case PDF_DATAAVAIL_LOADALLCRSOSSREF:
+ return LoadAllXref(pHints);
+ case PDF_DATAAVAIL_LOADALLFILE:
+ return LoadAllFile(pHints);
+ case PDF_DATAAVAIL_ROOT:
+ return CheckRoot(pHints);
+ case PDF_DATAAVAIL_INFO:
+ return CheckInfo(pHints);
+ case PDF_DATAAVAIL_ACROFORM:
+ return CheckAcroForm(pHints);
+ case PDF_DATAAVAIL_PAGETREE:
+ if (m_bTotalLoadPageTree) {
+ return CheckPages(pHints);
+ }
+ return LoadDocPages(pHints);
+ case PDF_DATAAVAIL_PAGE:
+ if (m_bTotalLoadPageTree) {
+ return CheckPage(pHints);
+ }
+ m_docStatus = PDF_DATAAVAIL_PAGE_LATERLOAD;
+ return TRUE;
+ case PDF_DATAAVAIL_ERROR:
+ return LoadAllFile(pHints);
+ case PDF_DATAAVAIL_PAGE_LATERLOAD:
+ m_docStatus = PDF_DATAAVAIL_PAGE;
+ default:
+ m_bDocAvail = TRUE;
+ return TRUE;
+ }
}
-FX_BOOL CPDF_DataAvail::LoadAllFile(IFX_DownloadHints* pHints)
-{
- if (m_pFileAvail->IsDataAvail(0, (FX_DWORD)m_dwFileLen)) {
- m_docStatus = PDF_DATAAVAIL_DONE;
- return TRUE;
- }
- pHints->AddSegment(0, (FX_DWORD)m_dwFileLen);
- return FALSE;
+FX_BOOL CPDF_DataAvail::CheckPageStatus(IFX_DownloadHints* pHints) {
+ switch (m_docStatus) {
+ case PDF_DATAAVAIL_PAGETREE:
+ return CheckPages(pHints);
+ case PDF_DATAAVAIL_PAGE:
+ return CheckPage(pHints);
+ case PDF_DATAAVAIL_ERROR:
+ return LoadAllFile(pHints);
+ default:
+ m_bPagesTreeLoad = TRUE;
+ m_bPagesLoad = TRUE;
+ return TRUE;
+ }
}
-FX_BOOL CPDF_DataAvail::LoadAllXref(IFX_DownloadHints* pHints)
-{
- m_parser.m_Syntax.InitParser(m_pFileRead, (FX_DWORD)m_dwHeaderOffset);
- m_parser.m_bOwnFileRead = FALSE;
- if (!m_parser.LoadAllCrossRefV4(m_dwLastXRefOffset) && !m_parser.LoadAllCrossRefV5(m_dwLastXRefOffset)) {
- m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
- return FALSE;
- }
- FXSYS_qsort(m_parser.m_SortedOffset.GetData(), m_parser.m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize);
- m_dwRootObjNum = m_parser.GetRootObjNum();
- m_dwInfoObjNum = m_parser.GetInfoObjNum();
- m_pCurrentParser = &m_parser;
- m_docStatus = PDF_DATAAVAIL_ROOT;
+FX_BOOL CPDF_DataAvail::LoadAllFile(IFX_DownloadHints* pHints) {
+ if (m_pFileAvail->IsDataAvail(0, (FX_DWORD)m_dwFileLen)) {
+ m_docStatus = PDF_DATAAVAIL_DONE;
return TRUE;
+ }
+ pHints->AddSegment(0, (FX_DWORD)m_dwFileLen);
+ return FALSE;
}
-CPDF_Object* CPDF_DataAvail::GetObject(FX_DWORD objnum, IFX_DownloadHints* pHints, FX_BOOL *pExistInFile)
-{
- CPDF_Object *pRet = NULL;
- FX_DWORD original_size = 0;
- FX_FILESIZE offset = 0;
- CPDF_Parser *pParser = NULL;
-
- if (pExistInFile) {
- *pExistInFile = TRUE;
- }
+FX_BOOL CPDF_DataAvail::LoadAllXref(IFX_DownloadHints* pHints) {
+ m_parser.m_Syntax.InitParser(m_pFileRead, (FX_DWORD)m_dwHeaderOffset);
+ m_parser.m_bOwnFileRead = FALSE;
+ if (!m_parser.LoadAllCrossRefV4(m_dwLastXRefOffset) &&
+ !m_parser.LoadAllCrossRefV5(m_dwLastXRefOffset)) {
+ m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
+ return FALSE;
+ }
+ FXSYS_qsort(m_parser.m_SortedOffset.GetData(),
+ m_parser.m_SortedOffset.GetSize(), sizeof(FX_FILESIZE),
+ _CompareFileSize);
+ m_dwRootObjNum = m_parser.GetRootObjNum();
+ m_dwInfoObjNum = m_parser.GetInfoObjNum();
+ m_pCurrentParser = &m_parser;
+ m_docStatus = PDF_DATAAVAIL_ROOT;
+ return TRUE;
+}
+CPDF_Object* CPDF_DataAvail::GetObject(FX_DWORD objnum,
+ IFX_DownloadHints* pHints,
+ FX_BOOL* pExistInFile) {
+ CPDF_Object* pRet = NULL;
+ FX_DWORD original_size = 0;
+ FX_FILESIZE offset = 0;
+ CPDF_Parser* pParser = NULL;
- if (m_pDocument == NULL) {
- original_size = (FX_DWORD)m_parser.GetObjectSize(objnum);
- offset = m_parser.GetObjectOffset(objnum);
- pParser = &m_parser;
- } else {
- original_size = GetObjectSize(objnum, offset);
- pParser = (CPDF_Parser *)(m_pDocument->GetParser());
- }
+ if (pExistInFile) {
+ *pExistInFile = TRUE;
+ }
- pdfium::base::CheckedNumeric<FX_DWORD> size = original_size;
- if (size.ValueOrDefault(0) == 0 || offset < 0 || offset >= m_dwFileLen) {
- if (pExistInFile)
- *pExistInFile = FALSE;
+ if (m_pDocument == NULL) {
+ original_size = (FX_DWORD)m_parser.GetObjectSize(objnum);
+ offset = m_parser.GetObjectOffset(objnum);
+ pParser = &m_parser;
+ } else {
+ original_size = GetObjectSize(objnum, offset);
+ pParser = (CPDF_Parser*)(m_pDocument->GetParser());
+ }
- return NULL;
- }
+ pdfium::base::CheckedNumeric<FX_DWORD> size = original_size;
+ if (size.ValueOrDefault(0) == 0 || offset < 0 || offset >= m_dwFileLen) {
+ if (pExistInFile)
+ *pExistInFile = FALSE;
- size += offset;
- size += 512;
- if (!size.IsValid()) {
- return NULL;
- }
+ return NULL;
+ }
- if (size.ValueOrDie() > m_dwFileLen) {
- size = m_dwFileLen - offset;
- } else {
- size = original_size + 512;
- }
+ size += offset;
+ size += 512;
+ if (!size.IsValid()) {
+ return NULL;
+ }
- if (!size.IsValid()) {
- return NULL;
- }
+ if (size.ValueOrDie() > m_dwFileLen) {
+ size = m_dwFileLen - offset;
+ } else {
+ size = original_size + 512;
+ }
- if (!m_pFileAvail->IsDataAvail(offset, size.ValueOrDie())) {
- pHints->AddSegment(offset, size.ValueOrDie());
- return NULL;
- }
+ if (!size.IsValid()) {
+ return NULL;
+ }
- if (pParser) {
- pRet = pParser->ParseIndirectObject(NULL, objnum, NULL);
- }
+ if (!m_pFileAvail->IsDataAvail(offset, size.ValueOrDie())) {
+ pHints->AddSegment(offset, size.ValueOrDie());
+ return NULL;
+ }
- if (!pRet && pExistInFile) {
- *pExistInFile = FALSE;
- }
+ if (pParser) {
+ pRet = pParser->ParseIndirectObject(NULL, objnum, NULL);
+ }
- return pRet;
-}
+ if (!pRet && pExistInFile) {
+ *pExistInFile = FALSE;
+ }
-FX_BOOL CPDF_DataAvail::CheckInfo(IFX_DownloadHints* pHints)
-{
- FX_BOOL bExist = FALSE;
- CPDF_Object *pInfo = GetObject(m_dwInfoObjNum, pHints, &bExist);
- if (!bExist) {
- if (m_bHaveAcroForm) {
- m_docStatus = PDF_DATAAVAIL_ACROFORM;
- } else {
- m_docStatus = PDF_DATAAVAIL_PAGETREE;
- }
- return TRUE;
- }
- if (!pInfo) {
- if (m_docStatus == PDF_DATAAVAIL_ERROR) {
- m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
- return TRUE;
- }
- if (m_Pos == m_dwFileLen) {
- m_docStatus = PDF_DATAAVAIL_ERROR;
- }
- return FALSE;
- }
- if (pInfo) {
- pInfo->Release();
- }
- if (m_bHaveAcroForm) {
- m_docStatus = PDF_DATAAVAIL_ACROFORM;
- } else {
- m_docStatus = PDF_DATAAVAIL_PAGETREE;
- }
- return TRUE;
-}
-FX_BOOL CPDF_DataAvail::CheckRoot(IFX_DownloadHints* pHints)
-{
- FX_BOOL bExist = FALSE;
- m_pRoot = GetObject(m_dwRootObjNum, pHints, &bExist);
- if (!bExist) {
- m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
- return TRUE;
- }
- if (!m_pRoot) {
- if (m_docStatus == PDF_DATAAVAIL_ERROR) {
- m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
- return TRUE;
- }
- return FALSE;
- }
- CPDF_Dictionary* pDict = m_pRoot->GetDict();
- if (!pDict) {
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
- }
- CPDF_Reference* pRef = (CPDF_Reference*)pDict->GetElement(FX_BSTRC("Pages"));
- if (pRef == NULL || pRef->GetType() != PDFOBJ_REFERENCE) {
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
- }
- m_PagesObjNum = pRef->GetRefObjNum();
- CPDF_Reference* pAcroFormRef = (CPDF_Reference*)m_pRoot->GetDict()->GetElement(FX_BSTRC("AcroForm"));
- if (pAcroFormRef && pAcroFormRef->GetType() == PDFOBJ_REFERENCE) {
- m_bHaveAcroForm = TRUE;
- m_dwAcroFormObjNum = pAcroFormRef->GetRefObjNum();
- }
- if (m_dwInfoObjNum) {
- m_docStatus = PDF_DATAAVAIL_INFO;
- } else {
- if (m_bHaveAcroForm) {
- m_docStatus = PDF_DATAAVAIL_ACROFORM;
- } else {
- m_docStatus = PDF_DATAAVAIL_PAGETREE;
- }
- }
- return TRUE;
-}
-FX_BOOL CPDF_DataAvail::PreparePageItem()
-{
- CPDF_Dictionary *pRoot = m_pDocument->GetRoot();
- CPDF_Reference* pRef = pRoot ? (CPDF_Reference*)pRoot->GetElement(FX_BSTRC("Pages")) : NULL;
- if (pRef == NULL || pRef->GetType() != PDFOBJ_REFERENCE) {
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
- }
- m_PagesObjNum = pRef->GetRefObjNum();
- m_pCurrentParser = (CPDF_Parser *)m_pDocument->GetParser();
- m_docStatus = PDF_DATAAVAIL_PAGETREE;
- return TRUE;
-}
-FX_BOOL CPDF_DataAvail::IsFirstCheck(int iPage)
-{
- if (NULL == m_pageMapCheckState) {
- m_pageMapCheckState = new CFX_CMapDWordToDWord();
- }
- FX_DWORD dwValue = 0;
- if (!m_pageMapCheckState->Lookup(iPage, dwValue)) {
- m_pageMapCheckState->SetAt(iPage, 1);
- return TRUE;
- }
- if (dwValue != 0) {
- return FALSE;
- }
- m_pageMapCheckState->SetAt(iPage, 1);
- return TRUE;
-}
-void CPDF_DataAvail::ResetFirstCheck(int iPage)
-{
- if (NULL == m_pageMapCheckState) {
- m_pageMapCheckState = new CFX_CMapDWordToDWord();
- }
- FX_DWORD dwValue = 1;
- if (!m_pageMapCheckState->Lookup(iPage, dwValue)) {
- return;
- }
- m_pageMapCheckState->SetAt(iPage, 0);
-}
-FX_BOOL CPDF_DataAvail::CheckPage(IFX_DownloadHints* pHints)
-{
- FX_DWORD iPageObjs = m_PageObjList.GetSize();
- CFX_DWordArray UnavailObjList;
- for (FX_DWORD i = 0; i < iPageObjs; ++i) {
- FX_DWORD dwPageObjNum = m_PageObjList.GetAt(i);
- FX_BOOL bExist = FALSE;
- CPDF_Object *pObj = GetObject(dwPageObjNum, pHints, &bExist);
- if (!pObj) {
- if (bExist) {
- UnavailObjList.Add(dwPageObjNum);
- }
- continue;
- }
- if (pObj->GetType() == PDFOBJ_ARRAY) {
- CPDF_Array *pArray = pObj->GetArray();
- if (pArray) {
- int32_t iSize = pArray->GetCount();
- CPDF_Object *pItem = NULL;
- for (int32_t j = 0; j < iSize; ++j) {
- pItem = pArray->GetElement(j);
- if (pItem && pItem->GetType() == PDFOBJ_REFERENCE) {
- UnavailObjList.Add(((CPDF_Reference *)pItem)->GetRefObjNum());
- }
- }
- }
- }
- if (pObj->GetType() != PDFOBJ_DICTIONARY) {
- pObj->Release();
- continue;
- }
- CFX_ByteString type = pObj->GetDict()->GetString(FX_BSTRC("Type"));
- if (type == FX_BSTRC("Pages")) {
- m_PagesArray.Add(pObj);
- continue;
- }
- pObj->Release();
- }
- m_PageObjList.RemoveAll();
- if (UnavailObjList.GetSize()) {
- m_PageObjList.Append(UnavailObjList);
- return FALSE;
- }
- FX_DWORD iPages = m_PagesArray.GetSize();
- for (FX_DWORD i = 0; i < iPages; i++) {
- CPDF_Object *pPages = (CPDF_Object *)m_PagesArray.GetAt(i);
- if (!pPages) {
- continue;
- }
- if (!GetPageKids(m_pCurrentParser, pPages)) {
- pPages->Release();
- while (++i < iPages) {
- pPages = (CPDF_Object *)m_PagesArray.GetAt(i);
- pPages->Release();
- }
- m_PagesArray.RemoveAll();
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
- }
- pPages->Release();
- }
- m_PagesArray.RemoveAll();
- if (!m_PageObjList.GetSize()) {
- m_docStatus = PDF_DATAAVAIL_DONE;
+ return pRet;
+}
+
+FX_BOOL CPDF_DataAvail::CheckInfo(IFX_DownloadHints* pHints) {
+ FX_BOOL bExist = FALSE;
+ CPDF_Object* pInfo = GetObject(m_dwInfoObjNum, pHints, &bExist);
+ if (!bExist) {
+ if (m_bHaveAcroForm) {
+ m_docStatus = PDF_DATAAVAIL_ACROFORM;
+ } else {
+ m_docStatus = PDF_DATAAVAIL_PAGETREE;
}
return TRUE;
-}
-FX_BOOL CPDF_DataAvail::GetPageKids(CPDF_Parser *pParser, CPDF_Object *pPages)
-{
- if (!pParser) {
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
+ }
+ if (!pInfo) {
+ if (m_docStatus == PDF_DATAAVAIL_ERROR) {
+ m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
+ return TRUE;
}
- CPDF_Dictionary* pDict = pPages->GetDict();
- CPDF_Object *pKids = pDict ? pDict->GetElement(FX_BSTRC("Kids")) : NULL;
- if (!pKids) {
- return TRUE;
+ if (m_Pos == m_dwFileLen) {
+ m_docStatus = PDF_DATAAVAIL_ERROR;
}
- switch (pKids->GetType()) {
- case PDFOBJ_REFERENCE: {
- CPDF_Reference *pKid = (CPDF_Reference *)pKids;
- m_PageObjList.Add(pKid->GetRefObjNum());
- }
- break;
- case PDFOBJ_ARRAY: {
- CPDF_Array *pKidsArray = (CPDF_Array *)pKids;
- for (FX_DWORD i = 0; i < pKidsArray->GetCount(); ++i) {
- CPDF_Object *pKid = (CPDF_Object *)pKidsArray->GetElement(i);
- if (pKid && pKid->GetType() == PDFOBJ_REFERENCE) {
- m_PageObjList.Add(((CPDF_Reference *)pKid)->GetRefObjNum());
- }
- }
- }
- break;
- default:
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
+ return FALSE;
+ }
+ if (pInfo) {
+ pInfo->Release();
+ }
+ if (m_bHaveAcroForm) {
+ m_docStatus = PDF_DATAAVAIL_ACROFORM;
+ } else {
+ m_docStatus = PDF_DATAAVAIL_PAGETREE;
+ }
+ return TRUE;
+}
+FX_BOOL CPDF_DataAvail::CheckRoot(IFX_DownloadHints* pHints) {
+ FX_BOOL bExist = FALSE;
+ m_pRoot = GetObject(m_dwRootObjNum, pHints, &bExist);
+ if (!bExist) {
+ m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
+ return TRUE;
+ }
+ if (!m_pRoot) {
+ if (m_docStatus == PDF_DATAAVAIL_ERROR) {
+ m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
+ return TRUE;
+ }
+ return FALSE;
+ }
+ CPDF_Dictionary* pDict = m_pRoot->GetDict();
+ if (!pDict) {
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ return FALSE;
+ }
+ CPDF_Reference* pRef = (CPDF_Reference*)pDict->GetElement(FX_BSTRC("Pages"));
+ if (pRef == NULL || pRef->GetType() != PDFOBJ_REFERENCE) {
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ return FALSE;
+ }
+ m_PagesObjNum = pRef->GetRefObjNum();
+ CPDF_Reference* pAcroFormRef =
+ (CPDF_Reference*)m_pRoot->GetDict()->GetElement(FX_BSTRC("AcroForm"));
+ if (pAcroFormRef && pAcroFormRef->GetType() == PDFOBJ_REFERENCE) {
+ m_bHaveAcroForm = TRUE;
+ m_dwAcroFormObjNum = pAcroFormRef->GetRefObjNum();
+ }
+ if (m_dwInfoObjNum) {
+ m_docStatus = PDF_DATAAVAIL_INFO;
+ } else {
+ if (m_bHaveAcroForm) {
+ m_docStatus = PDF_DATAAVAIL_ACROFORM;
+ } else {
+ m_docStatus = PDF_DATAAVAIL_PAGETREE;
}
+ }
+ return TRUE;
+}
+FX_BOOL CPDF_DataAvail::PreparePageItem() {
+ CPDF_Dictionary* pRoot = m_pDocument->GetRoot();
+ CPDF_Reference* pRef =
+ pRoot ? (CPDF_Reference*)pRoot->GetElement(FX_BSTRC("Pages")) : NULL;
+ if (pRef == NULL || pRef->GetType() != PDFOBJ_REFERENCE) {
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ return FALSE;
+ }
+ m_PagesObjNum = pRef->GetRefObjNum();
+ m_pCurrentParser = (CPDF_Parser*)m_pDocument->GetParser();
+ m_docStatus = PDF_DATAAVAIL_PAGETREE;
+ return TRUE;
+}
+FX_BOOL CPDF_DataAvail::IsFirstCheck(int iPage) {
+ if (NULL == m_pageMapCheckState) {
+ m_pageMapCheckState = new CFX_CMapDWordToDWord();
+ }
+ FX_DWORD dwValue = 0;
+ if (!m_pageMapCheckState->Lookup(iPage, dwValue)) {
+ m_pageMapCheckState->SetAt(iPage, 1);
return TRUE;
+ }
+ if (dwValue != 0) {
+ return FALSE;
+ }
+ m_pageMapCheckState->SetAt(iPage, 1);
+ return TRUE;
}
-FX_BOOL CPDF_DataAvail::CheckPages(IFX_DownloadHints* pHints)
-{
+void CPDF_DataAvail::ResetFirstCheck(int iPage) {
+ if (NULL == m_pageMapCheckState) {
+ m_pageMapCheckState = new CFX_CMapDWordToDWord();
+ }
+ FX_DWORD dwValue = 1;
+ if (!m_pageMapCheckState->Lookup(iPage, dwValue)) {
+ return;
+ }
+ m_pageMapCheckState->SetAt(iPage, 0);
+}
+FX_BOOL CPDF_DataAvail::CheckPage(IFX_DownloadHints* pHints) {
+ FX_DWORD iPageObjs = m_PageObjList.GetSize();
+ CFX_DWordArray UnavailObjList;
+ for (FX_DWORD i = 0; i < iPageObjs; ++i) {
+ FX_DWORD dwPageObjNum = m_PageObjList.GetAt(i);
FX_BOOL bExist = FALSE;
- CPDF_Object *pPages = GetObject(m_PagesObjNum, pHints, &bExist);
- if (!bExist) {
- m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
- return TRUE;
- }
+ CPDF_Object* pObj = GetObject(dwPageObjNum, pHints, &bExist);
+ if (!pObj) {
+ if (bExist) {
+ UnavailObjList.Add(dwPageObjNum);
+ }
+ continue;
+ }
+ if (pObj->GetType() == PDFOBJ_ARRAY) {
+ CPDF_Array* pArray = pObj->GetArray();
+ if (pArray) {
+ int32_t iSize = pArray->GetCount();
+ CPDF_Object* pItem = NULL;
+ for (int32_t j = 0; j < iSize; ++j) {
+ pItem = pArray->GetElement(j);
+ if (pItem && pItem->GetType() == PDFOBJ_REFERENCE) {
+ UnavailObjList.Add(((CPDF_Reference*)pItem)->GetRefObjNum());
+ }
+ }
+ }
+ }
+ if (pObj->GetType() != PDFOBJ_DICTIONARY) {
+ pObj->Release();
+ continue;
+ }
+ CFX_ByteString type = pObj->GetDict()->GetString(FX_BSTRC("Type"));
+ if (type == FX_BSTRC("Pages")) {
+ m_PagesArray.Add(pObj);
+ continue;
+ }
+ pObj->Release();
+ }
+ m_PageObjList.RemoveAll();
+ if (UnavailObjList.GetSize()) {
+ m_PageObjList.Append(UnavailObjList);
+ return FALSE;
+ }
+ FX_DWORD iPages = m_PagesArray.GetSize();
+ for (FX_DWORD i = 0; i < iPages; i++) {
+ CPDF_Object* pPages = (CPDF_Object*)m_PagesArray.GetAt(i);
if (!pPages) {
- if (m_docStatus == PDF_DATAAVAIL_ERROR) {
- m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
- return TRUE;
- }
- return FALSE;
+ continue;
}
if (!GetPageKids(m_pCurrentParser, pPages)) {
+ pPages->Release();
+ while (++i < iPages) {
+ pPages = (CPDF_Object*)m_PagesArray.GetAt(i);
pPages->Release();
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
+ }
+ m_PagesArray.RemoveAll();
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ return FALSE;
}
pPages->Release();
- m_docStatus = PDF_DATAAVAIL_PAGE;
- return TRUE;
+ }
+ m_PagesArray.RemoveAll();
+ if (!m_PageObjList.GetSize()) {
+ m_docStatus = PDF_DATAAVAIL_DONE;
+ }
+ return TRUE;
}
-FX_BOOL CPDF_DataAvail::CheckHeader(IFX_DownloadHints* pHints)
-{
- FX_DWORD req_size = 1024;
- if ((FX_FILESIZE)req_size > m_dwFileLen) {
- req_size = (FX_DWORD)m_dwFileLen;
- }
- if (m_pFileAvail->IsDataAvail(0, req_size)) {
- uint8_t buffer[1024];
- m_pFileRead->ReadBlock(buffer, 0, req_size);
- if (IsLinearizedFile(buffer, req_size)) {
- m_docStatus = PDF_DATAAVAIL_FIRSTPAGE;
- } else {
- if (m_docStatus == PDF_DATAAVAIL_ERROR) {
- return FALSE;
- }
- m_docStatus = PDF_DATAAVAIL_END;
- }
- return TRUE;
- }
- pHints->AddSegment(0, req_size);
+FX_BOOL CPDF_DataAvail::GetPageKids(CPDF_Parser* pParser, CPDF_Object* pPages) {
+ if (!pParser) {
+ m_docStatus = PDF_DATAAVAIL_ERROR;
return FALSE;
+ }
+ CPDF_Dictionary* pDict = pPages->GetDict();
+ CPDF_Object* pKids = pDict ? pDict->GetElement(FX_BSTRC("Kids")) : NULL;
+ if (!pKids) {
+ return TRUE;
+ }
+ switch (pKids->GetType()) {
+ case PDFOBJ_REFERENCE: {
+ CPDF_Reference* pKid = (CPDF_Reference*)pKids;
+ m_PageObjList.Add(pKid->GetRefObjNum());
+ } break;
+ case PDFOBJ_ARRAY: {
+ CPDF_Array* pKidsArray = (CPDF_Array*)pKids;
+ for (FX_DWORD i = 0; i < pKidsArray->GetCount(); ++i) {
+ CPDF_Object* pKid = (CPDF_Object*)pKidsArray->GetElement(i);
+ if (pKid && pKid->GetType() == PDFOBJ_REFERENCE) {
+ m_PageObjList.Add(((CPDF_Reference*)pKid)->GetRefObjNum());
+ }
+ }
+ } break;
+ default:
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ return FALSE;
+ }
+ return TRUE;
}
-FX_BOOL CPDF_DataAvail::CheckFirstPage(IFX_DownloadHints *pHints)
-{
- CPDF_Dictionary* pDict = m_pLinearized->GetDict();
- CPDF_Object *pEndOffSet = pDict ? pDict->GetElement(FX_BSTRC("E")) : NULL;
- if (!pEndOffSet) {
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
- }
- CPDF_Object *pXRefOffset = pDict ? pDict->GetElement(FX_BSTRC("T")) : NULL;
- if (!pXRefOffset) {
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
- }
- CPDF_Object *pFileLen = pDict ? pDict->GetElement(FX_BSTRC("L")) : NULL;
- if (!pFileLen) {
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
- }
- FX_BOOL bNeedDownLoad = FALSE;
- if (pEndOffSet->GetType() == PDFOBJ_NUMBER) {
- FX_DWORD dwEnd = pEndOffSet->GetInteger();
- dwEnd += 512;
- if ((FX_FILESIZE)dwEnd > m_dwFileLen) {
- dwEnd = (FX_DWORD)m_dwFileLen;
- }
- int32_t iStartPos = (int32_t)(m_dwFileLen > 1024 ? 1024 : m_dwFileLen);
- int32_t iSize = dwEnd > 1024 ? dwEnd - 1024 : 0;
- if (!m_pFileAvail->IsDataAvail(iStartPos, iSize)) {
- pHints->AddSegment(iStartPos, iSize);
- bNeedDownLoad = TRUE;
- }
- }
- m_dwLastXRefOffset = 0;
- FX_FILESIZE dwFileLen = 0;
- if (pXRefOffset->GetType() == PDFOBJ_NUMBER) {
- m_dwLastXRefOffset = pXRefOffset->GetInteger();
- }
- if (pFileLen->GetType() == PDFOBJ_NUMBER) {
- dwFileLen = pFileLen->GetInteger();
- }
- if (!m_pFileAvail->IsDataAvail(m_dwLastXRefOffset, (FX_DWORD)(dwFileLen - m_dwLastXRefOffset))) {
- if (m_docStatus == PDF_DATAAVAIL_FIRSTPAGE) {
- FX_DWORD dwSize = (FX_DWORD)(dwFileLen - m_dwLastXRefOffset);
- FX_FILESIZE offset = m_dwLastXRefOffset;
- if (dwSize < 512 && dwFileLen > 512) {
- dwSize = 512;
- offset = dwFileLen - 512;
- }
- pHints->AddSegment(offset, dwSize);
- }
- } else {
- m_docStatus = PDF_DATAAVAIL_FIRSTPAGE_PREPARE;
- }
- if (!bNeedDownLoad && m_docStatus == PDF_DATAAVAIL_FIRSTPAGE_PREPARE) {
- m_docStatus = PDF_DATAAVAIL_DONE;
- return TRUE;
+FX_BOOL CPDF_DataAvail::CheckPages(IFX_DownloadHints* pHints) {
+ FX_BOOL bExist = FALSE;
+ CPDF_Object* pPages = GetObject(m_PagesObjNum, pHints, &bExist);
+ if (!bExist) {
+ m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
+ return TRUE;
+ }
+ if (!pPages) {
+ if (m_docStatus == PDF_DATAAVAIL_ERROR) {
+ m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
+ return TRUE;
}
- m_docStatus = PDF_DATAAVAIL_FIRSTPAGE_PREPARE;
return FALSE;
+ }
+ if (!GetPageKids(m_pCurrentParser, pPages)) {
+ pPages->Release();
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ return FALSE;
+ }
+ pPages->Release();
+ m_docStatus = PDF_DATAAVAIL_PAGE;
+ return TRUE;
}
-CPDF_Object * CPDF_DataAvail::ParseIndirectObjectAt(FX_FILESIZE pos, FX_DWORD objnum)
-{
- FX_FILESIZE SavedPos = m_syntaxParser.SavePos();
- m_syntaxParser.RestorePos(pos);
- FX_BOOL bIsNumber;
- CFX_ByteString word = m_syntaxParser.GetNextWord(bIsNumber);
- if (!bIsNumber) {
- return NULL;
- }
- FX_DWORD parser_objnum = FXSYS_atoi(word);
- if (objnum && parser_objnum != objnum) {
- return NULL;
- }
- word = m_syntaxParser.GetNextWord(bIsNumber);
- if (!bIsNumber) {
- return NULL;
- }
- FX_DWORD gennum = FXSYS_atoi(word);
- if (m_syntaxParser.GetKeyword() != FX_BSTRC("obj")) {
- m_syntaxParser.RestorePos(SavedPos);
- return NULL;
- }
- CPDF_Object* pObj = m_syntaxParser.GetObject(NULL, objnum, gennum, 0);
- m_syntaxParser.RestorePos(SavedPos);
- return pObj;
-}
-int32_t CPDF_DataAvail::IsLinearizedPDF()
-{
- FX_DWORD req_size = 1024;
- if (!m_pFileAvail->IsDataAvail(0, req_size)) {
- return PDF_UNKNOW_LINEARIZED;
- }
- if (!m_pFileRead) {
- return PDF_NOT_LINEARIZED;
- }
- FX_FILESIZE dwSize = m_pFileRead->GetSize();
- if (dwSize < (FX_FILESIZE)req_size) {
- return PDF_UNKNOW_LINEARIZED;
- }
+FX_BOOL CPDF_DataAvail::CheckHeader(IFX_DownloadHints* pHints) {
+ FX_DWORD req_size = 1024;
+ if ((FX_FILESIZE)req_size > m_dwFileLen) {
+ req_size = (FX_DWORD)m_dwFileLen;
+ }
+ if (m_pFileAvail->IsDataAvail(0, req_size)) {
uint8_t buffer[1024];
m_pFileRead->ReadBlock(buffer, 0, req_size);
if (IsLinearizedFile(buffer, req_size)) {
- return PDF_IS_LINEARIZED;
- }
- return PDF_NOT_LINEARIZED;
-}
-FX_BOOL CPDF_DataAvail::IsLinearizedFile(uint8_t* pData, FX_DWORD dwLen)
-{
- CFX_SmartPointer<IFX_FileStream> file(FX_CreateMemoryStream(pData, (size_t)dwLen, FALSE));
- int32_t offset = GetHeaderOffset(file.Get());
- if (offset == -1) {
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
- }
- m_dwHeaderOffset = offset;
- m_syntaxParser.InitParser(file.Get(), offset);
- m_syntaxParser.RestorePos(m_syntaxParser.m_HeaderOffset + 9);
- FX_BOOL bNumber = FALSE;
- CFX_ByteString wordObjNum = m_syntaxParser.GetNextWord(bNumber);
- if (!bNumber) {
- return FALSE;
- }
- FX_DWORD objnum = FXSYS_atoi(wordObjNum);
- if (m_pLinearized) {
- m_pLinearized->Release();
- m_pLinearized = NULL;
- }
- m_pLinearized = ParseIndirectObjectAt(m_syntaxParser.m_HeaderOffset + 9, objnum);
- if (!m_pLinearized) {
+ m_docStatus = PDF_DATAAVAIL_FIRSTPAGE;
+ } else {
+ if (m_docStatus == PDF_DATAAVAIL_ERROR) {
return FALSE;
+ }
+ m_docStatus = PDF_DATAAVAIL_END;
}
- if (m_pLinearized->GetDict() && m_pLinearized->GetDict()->GetElement(FX_BSTRC("Linearized"))) {
- CPDF_Object *pLen = m_pLinearized->GetDict()->GetElement(FX_BSTRC("L"));
- if (!pLen) {
- return FALSE;
- }
- if ((FX_FILESIZE)pLen->GetInteger() != m_pFileRead->GetSize()) {
- return FALSE;
- }
- m_bLinearized = TRUE;
- CPDF_Object *pNo = m_pLinearized->GetDict()->GetElement(FX_BSTRC("P"));
- if (pNo && pNo->GetType() == PDFOBJ_NUMBER) {
- m_dwFirstPageNo = pNo->GetInteger();
- }
- return TRUE;
- }
- return FALSE;
+ return TRUE;
+ }
+ pHints->AddSegment(0, req_size);
+ return FALSE;
}
-FX_BOOL CPDF_DataAvail::CheckEnd(IFX_DownloadHints* pHints)
-{
- FX_DWORD req_pos = (FX_DWORD)(m_dwFileLen > 1024 ? m_dwFileLen - 1024 : 0);
- FX_DWORD dwSize = (FX_DWORD)(m_dwFileLen - req_pos);
- if (m_pFileAvail->IsDataAvail(req_pos, dwSize)) {
- uint8_t buffer[1024];
- m_pFileRead->ReadBlock(buffer, req_pos, dwSize);
- CFX_SmartPointer<IFX_FileStream> file(FX_CreateMemoryStream(buffer, (size_t)dwSize, FALSE));
- m_syntaxParser.InitParser(file.Get(), 0);
- m_syntaxParser.RestorePos(dwSize - 1);
- if (m_syntaxParser.SearchWord(FX_BSTRC("startxref"), TRUE, FALSE, dwSize)) {
- FX_BOOL bNumber;
- m_syntaxParser.GetNextWord(bNumber);
- CFX_ByteString xrefpos_str = m_syntaxParser.GetNextWord(bNumber);
- if (!bNumber) {
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
- }
- m_dwXRefOffset = (FX_FILESIZE)FXSYS_atoi64(xrefpos_str);
- if (!m_dwXRefOffset || m_dwXRefOffset > m_dwFileLen) {
- m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
- return TRUE;
- }
- m_dwLastXRefOffset = m_dwXRefOffset;
- SetStartOffset(m_dwXRefOffset);
- m_docStatus = PDF_DATAAVAIL_CROSSREF;
- return TRUE;
- }
- m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
- return TRUE;
- }
- pHints->AddSegment(req_pos, dwSize);
+FX_BOOL CPDF_DataAvail::CheckFirstPage(IFX_DownloadHints* pHints) {
+ CPDF_Dictionary* pDict = m_pLinearized->GetDict();
+ CPDF_Object* pEndOffSet = pDict ? pDict->GetElement(FX_BSTRC("E")) : NULL;
+ if (!pEndOffSet) {
+ m_docStatus = PDF_DATAAVAIL_ERROR;
return FALSE;
+ }
+ CPDF_Object* pXRefOffset = pDict ? pDict->GetElement(FX_BSTRC("T")) : NULL;
+ if (!pXRefOffset) {
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ return FALSE;
+ }
+ CPDF_Object* pFileLen = pDict ? pDict->GetElement(FX_BSTRC("L")) : NULL;
+ if (!pFileLen) {
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ return FALSE;
+ }
+ FX_BOOL bNeedDownLoad = FALSE;
+ if (pEndOffSet->GetType() == PDFOBJ_NUMBER) {
+ FX_DWORD dwEnd = pEndOffSet->GetInteger();
+ dwEnd += 512;
+ if ((FX_FILESIZE)dwEnd > m_dwFileLen) {
+ dwEnd = (FX_DWORD)m_dwFileLen;
+ }
+ int32_t iStartPos = (int32_t)(m_dwFileLen > 1024 ? 1024 : m_dwFileLen);
+ int32_t iSize = dwEnd > 1024 ? dwEnd - 1024 : 0;
+ if (!m_pFileAvail->IsDataAvail(iStartPos, iSize)) {
+ pHints->AddSegment(iStartPos, iSize);
+ bNeedDownLoad = TRUE;
+ }
+ }
+ m_dwLastXRefOffset = 0;
+ FX_FILESIZE dwFileLen = 0;
+ if (pXRefOffset->GetType() == PDFOBJ_NUMBER) {
+ m_dwLastXRefOffset = pXRefOffset->GetInteger();
+ }
+ if (pFileLen->GetType() == PDFOBJ_NUMBER) {
+ dwFileLen = pFileLen->GetInteger();
+ }
+ if (!m_pFileAvail->IsDataAvail(m_dwLastXRefOffset,
+ (FX_DWORD)(dwFileLen - m_dwLastXRefOffset))) {
+ if (m_docStatus == PDF_DATAAVAIL_FIRSTPAGE) {
+ FX_DWORD dwSize = (FX_DWORD)(dwFileLen - m_dwLastXRefOffset);
+ FX_FILESIZE offset = m_dwLastXRefOffset;
+ if (dwSize < 512 && dwFileLen > 512) {
+ dwSize = 512;
+ offset = dwFileLen - 512;
+ }
+ pHints->AddSegment(offset, dwSize);
+ }
+ } else {
+ m_docStatus = PDF_DATAAVAIL_FIRSTPAGE_PREPARE;
+ }
+ if (!bNeedDownLoad && m_docStatus == PDF_DATAAVAIL_FIRSTPAGE_PREPARE) {
+ m_docStatus = PDF_DATAAVAIL_DONE;
+ return TRUE;
+ }
+ m_docStatus = PDF_DATAAVAIL_FIRSTPAGE_PREPARE;
+ return FALSE;
}
-int32_t CPDF_DataAvail::CheckCrossRefStream(IFX_DownloadHints* pHints, FX_FILESIZE &xref_offset)
-{
- xref_offset = 0;
- FX_DWORD req_size = (FX_DWORD)(m_Pos + 512 > m_dwFileLen ? m_dwFileLen - m_Pos : 512);
- if (m_pFileAvail->IsDataAvail(m_Pos, req_size)) {
- int32_t iSize = (int32_t)(m_Pos + req_size - m_dwCurrentXRefSteam);
- CFX_BinaryBuf buf(iSize);
- uint8_t* pBuf = buf.GetBuffer();
- m_pFileRead->ReadBlock(pBuf, m_dwCurrentXRefSteam, iSize);
- CFX_SmartPointer<IFX_FileStream> file(FX_CreateMemoryStream(pBuf, (size_t)iSize, FALSE));
- m_parser.m_Syntax.InitParser(file.Get(), 0);
- FX_BOOL bNumber = FALSE;
- CFX_ByteString objnum = m_parser.m_Syntax.GetNextWord(bNumber);
- if (!bNumber) {
- return -1;
- }
- FX_DWORD objNum = FXSYS_atoi(objnum);
- CPDF_Object *pObj = m_parser.ParseIndirectObjectAt(NULL, 0, objNum, NULL);
- if (!pObj) {
- m_Pos += m_parser.m_Syntax.SavePos();
- return 0;
- }
- CPDF_Dictionary* pDict = pObj->GetDict();
- CPDF_Object *pName = pDict ? pDict->GetElement(FX_BSTRC("Type")) : NULL;
- if (pName && pName->GetType() == PDFOBJ_NAME) {
- if (pName->GetString() == FX_BSTRC("XRef")) {
- m_Pos += m_parser.m_Syntax.SavePos();
- xref_offset = pObj->GetDict()->GetInteger(FX_BSTRC("Prev"));
- pObj->Release();
- return 1;
- }
- }
- pObj->Release();
- return -1;
- }
- pHints->AddSegment(m_Pos, req_size);
- return 0;
+CPDF_Object* CPDF_DataAvail::ParseIndirectObjectAt(FX_FILESIZE pos,
+ FX_DWORD objnum) {
+ FX_FILESIZE SavedPos = m_syntaxParser.SavePos();
+ m_syntaxParser.RestorePos(pos);
+ FX_BOOL bIsNumber;
+ CFX_ByteString word = m_syntaxParser.GetNextWord(bIsNumber);
+ if (!bIsNumber) {
+ return NULL;
+ }
+ FX_DWORD parser_objnum = FXSYS_atoi(word);
+ if (objnum && parser_objnum != objnum) {
+ return NULL;
+ }
+ word = m_syntaxParser.GetNextWord(bIsNumber);
+ if (!bIsNumber) {
+ return NULL;
+ }
+ FX_DWORD gennum = FXSYS_atoi(word);
+ if (m_syntaxParser.GetKeyword() != FX_BSTRC("obj")) {
+ m_syntaxParser.RestorePos(SavedPos);
+ return NULL;
+ }
+ CPDF_Object* pObj = m_syntaxParser.GetObject(NULL, objnum, gennum, 0);
+ m_syntaxParser.RestorePos(SavedPos);
+ return pObj;
}
-inline void CPDF_DataAvail::SetStartOffset(FX_FILESIZE dwOffset)
-{
- m_Pos = dwOffset;
+int32_t CPDF_DataAvail::IsLinearizedPDF() {
+ FX_DWORD req_size = 1024;
+ if (!m_pFileAvail->IsDataAvail(0, req_size)) {
+ return PDF_UNKNOW_LINEARIZED;
+ }
+ if (!m_pFileRead) {
+ return PDF_NOT_LINEARIZED;
+ }
+ FX_FILESIZE dwSize = m_pFileRead->GetSize();
+ if (dwSize < (FX_FILESIZE)req_size) {
+ return PDF_UNKNOW_LINEARIZED;
+ }
+ uint8_t buffer[1024];
+ m_pFileRead->ReadBlock(buffer, 0, req_size);
+ if (IsLinearizedFile(buffer, req_size)) {
+ return PDF_IS_LINEARIZED;
+ }
+ return PDF_NOT_LINEARIZED;
}
-#define MAX_WORD_BUFFER 256
-FX_BOOL CPDF_DataAvail::GetNextToken(CFX_ByteString &token)
-{
- m_WordSize = 0;
- uint8_t ch;
- if (!GetNextChar(ch)) {
- return FALSE;
- }
- uint8_t type = PDF_CharType[ch];
- while (1) {
- while (type == 'W') {
- if (!GetNextChar(ch)) {
- return FALSE;
- }
- type = PDF_CharType[ch];
- }
- if (ch != '%') {
- break;
- }
- while (1) {
- if (!GetNextChar(ch)) {
- return FALSE;
- }
- if (ch == '\r' || ch == '\n') {
- break;
- }
- }
- type = PDF_CharType[ch];
- }
- if (type == 'D') {
- m_WordBuffer[m_WordSize++] = ch;
- if (ch == '/') {
- while (1) {
- if (!GetNextChar(ch)) {
- return FALSE;
- }
- type = PDF_CharType[ch];
- if (type != 'R' && type != 'N') {
- m_Pos --;
- CFX_ByteString ret(m_WordBuffer, m_WordSize);
- token = ret;
- return TRUE;
- }
- if (m_WordSize < MAX_WORD_BUFFER) {
- m_WordBuffer[m_WordSize++] = ch;
- }
- }
- } else if (ch == '<') {
- if (!GetNextChar(ch)) {
- return FALSE;
- }
- if (ch == '<') {
- m_WordBuffer[m_WordSize++] = ch;
- } else {
- m_Pos --;
- }
- } else if (ch == '>') {
- if (!GetNextChar(ch)) {
- return FALSE;
- }
- if (ch == '>') {
- m_WordBuffer[m_WordSize++] = ch;
- } else {
- m_Pos --;
- }
- }
- CFX_ByteString ret(m_WordBuffer, m_WordSize);
- token = ret;
- return TRUE;
- }
- while (1) {
- if (m_WordSize < MAX_WORD_BUFFER) {
- m_WordBuffer[m_WordSize++] = ch;
- }
- if (!GetNextChar(ch)) {
- return FALSE;
- }
- type = PDF_CharType[ch];
- if (type == 'D' || type == 'W') {
- m_Pos --;
- break;
- }
+FX_BOOL CPDF_DataAvail::IsLinearizedFile(uint8_t* pData, FX_DWORD dwLen) {
+ CFX_SmartPointer<IFX_FileStream> file(
+ FX_CreateMemoryStream(pData, (size_t)dwLen, FALSE));
+ int32_t offset = GetHeaderOffset(file.Get());
+ if (offset == -1) {
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ return FALSE;
+ }
+ m_dwHeaderOffset = offset;
+ m_syntaxParser.InitParser(file.Get(), offset);
+ m_syntaxParser.RestorePos(m_syntaxParser.m_HeaderOffset + 9);
+ FX_BOOL bNumber = FALSE;
+ CFX_ByteString wordObjNum = m_syntaxParser.GetNextWord(bNumber);
+ if (!bNumber) {
+ return FALSE;
+ }
+ FX_DWORD objnum = FXSYS_atoi(wordObjNum);
+ if (m_pLinearized) {
+ m_pLinearized->Release();
+ m_pLinearized = NULL;
+ }
+ m_pLinearized =
+ ParseIndirectObjectAt(m_syntaxParser.m_HeaderOffset + 9, objnum);
+ if (!m_pLinearized) {
+ return FALSE;
+ }
+ if (m_pLinearized->GetDict() &&
+ m_pLinearized->GetDict()->GetElement(FX_BSTRC("Linearized"))) {
+ CPDF_Object* pLen = m_pLinearized->GetDict()->GetElement(FX_BSTRC("L"));
+ if (!pLen) {
+ return FALSE;
}
- CFX_ByteString ret(m_WordBuffer, m_WordSize);
- token = ret;
- return TRUE;
-}
-FX_BOOL CPDF_DataAvail::GetNextChar(uint8_t &ch)
-{
- FX_FILESIZE pos = m_Pos;
- if (pos >= m_dwFileLen) {
- return FALSE;
+ if ((FX_FILESIZE)pLen->GetInteger() != m_pFileRead->GetSize()) {
+ return FALSE;
}
- if (m_bufferOffset >= pos || (FX_FILESIZE)(m_bufferOffset + m_bufferSize) <= pos) {
- FX_FILESIZE read_pos = pos;
- FX_DWORD read_size = 512;
- if ((FX_FILESIZE)read_size > m_dwFileLen) {
- read_size = (FX_DWORD)m_dwFileLen;
- }
- if ((FX_FILESIZE)(read_pos + read_size) > m_dwFileLen) {
- read_pos = m_dwFileLen - read_size;
- }
- if (!m_pFileRead->ReadBlock(m_bufferData, read_pos, read_size)) {
- return FALSE;
- }
- m_bufferOffset = read_pos;
- m_bufferSize = read_size;
+ m_bLinearized = TRUE;
+ CPDF_Object* pNo = m_pLinearized->GetDict()->GetElement(FX_BSTRC("P"));
+ if (pNo && pNo->GetType() == PDFOBJ_NUMBER) {
+ m_dwFirstPageNo = pNo->GetInteger();
}
- ch = m_bufferData[pos - m_bufferOffset];
- m_Pos ++;
return TRUE;
+ }
+ return FALSE;
}
-FX_BOOL CPDF_DataAvail::CheckCrossRefItem(IFX_DownloadHints *pHints)
-{
- int32_t iSize = 0;
- CFX_ByteString token;
- while (1) {
- if (!GetNextToken(token)) {
- iSize = (int32_t)(m_Pos + 512 > m_dwFileLen ? m_dwFileLen - m_Pos : 512);
- pHints->AddSegment(m_Pos, iSize);
- return FALSE;
- }
- if (token == "trailer") {
- m_dwTrailerOffset = m_Pos;
- m_docStatus = PDF_DATAAVAIL_TRAILER;
- return TRUE;
- }
- }
-}
-FX_BOOL CPDF_DataAvail::CheckAllCrossRefStream(IFX_DownloadHints *pHints)
-{
- FX_FILESIZE xref_offset = 0;
- int32_t nRet = CheckCrossRefStream(pHints, xref_offset);
- if (nRet == 1) {
- if (!xref_offset) {
- m_docStatus = PDF_DATAAVAIL_LOADALLCRSOSSREF;
- } else {
- m_dwCurrentXRefSteam = xref_offset;
- m_Pos = xref_offset;
- }
- return TRUE;
- }
- if (nRet == -1) {
+FX_BOOL CPDF_DataAvail::CheckEnd(IFX_DownloadHints* pHints) {
+ FX_DWORD req_pos = (FX_DWORD)(m_dwFileLen > 1024 ? m_dwFileLen - 1024 : 0);
+ FX_DWORD dwSize = (FX_DWORD)(m_dwFileLen - req_pos);
+ if (m_pFileAvail->IsDataAvail(req_pos, dwSize)) {
+ uint8_t buffer[1024];
+ m_pFileRead->ReadBlock(buffer, req_pos, dwSize);
+ CFX_SmartPointer<IFX_FileStream> file(
+ FX_CreateMemoryStream(buffer, (size_t)dwSize, FALSE));
+ m_syntaxParser.InitParser(file.Get(), 0);
+ m_syntaxParser.RestorePos(dwSize - 1);
+ if (m_syntaxParser.SearchWord(FX_BSTRC("startxref"), TRUE, FALSE, dwSize)) {
+ FX_BOOL bNumber;
+ m_syntaxParser.GetNextWord(bNumber);
+ CFX_ByteString xrefpos_str = m_syntaxParser.GetNextWord(bNumber);
+ if (!bNumber) {
m_docStatus = PDF_DATAAVAIL_ERROR;
- }
- return FALSE;
-}
-FX_BOOL CPDF_DataAvail::CheckCrossRef(IFX_DownloadHints* pHints)
-{
- int32_t iSize = 0;
- CFX_ByteString token;
- if (!GetNextToken(token)) {
- iSize = (int32_t)(m_Pos + 512 > m_dwFileLen ? m_dwFileLen - m_Pos : 512);
- pHints->AddSegment(m_Pos, iSize);
return FALSE;
- }
- if (token == "xref") {
- m_CrossOffset.InsertAt(0, m_dwXRefOffset);
- while (1) {
- if (!GetNextToken(token)) {
- iSize = (int32_t)(m_Pos + 512 > m_dwFileLen ? m_dwFileLen - m_Pos : 512);
- pHints->AddSegment(m_Pos, iSize);
- m_docStatus = PDF_DATAAVAIL_CROSSREF_ITEM;
- return FALSE;
- }
- if (token == "trailer") {
- m_dwTrailerOffset = m_Pos;
- m_docStatus = PDF_DATAAVAIL_TRAILER;
- return TRUE;
- }
- }
- } else {
+ }
+ m_dwXRefOffset = (FX_FILESIZE)FXSYS_atoi64(xrefpos_str);
+ if (!m_dwXRefOffset || m_dwXRefOffset > m_dwFileLen) {
m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
return TRUE;
+ }
+ m_dwLastXRefOffset = m_dwXRefOffset;
+ SetStartOffset(m_dwXRefOffset);
+ m_docStatus = PDF_DATAAVAIL_CROSSREF;
+ return TRUE;
}
- return FALSE;
-}
-FX_BOOL CPDF_DataAvail::CheckTrailerAppend(IFX_DownloadHints* pHints)
-{
- if (m_Pos < m_dwFileLen) {
- FX_FILESIZE dwAppendPos = m_Pos + m_syntaxParser.SavePos();
- int32_t iSize = (int32_t)(dwAppendPos + 512 > m_dwFileLen ? m_dwFileLen - dwAppendPos : 512);
- if (!m_pFileAvail->IsDataAvail(dwAppendPos, iSize)) {
- pHints->AddSegment(dwAppendPos, iSize);
- return FALSE;
- }
- }
- if (m_dwPrevXRefOffset) {
- SetStartOffset(m_dwPrevXRefOffset);
- m_docStatus = PDF_DATAAVAIL_CROSSREF;
- } else {
- m_docStatus = PDF_DATAAVAIL_LOADALLCRSOSSREF;
- }
+ m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
return TRUE;
+ }
+ pHints->AddSegment(req_pos, dwSize);
+ return FALSE;
}
-FX_BOOL CPDF_DataAvail::CheckTrailer(IFX_DownloadHints* pHints)
-{
- int32_t iTrailerSize = (int32_t)(m_Pos + 512 > m_dwFileLen ? m_dwFileLen - m_Pos : 512);
- if (m_pFileAvail->IsDataAvail(m_Pos, iTrailerSize)) {
- int32_t iSize = (int32_t)(m_Pos + iTrailerSize - m_dwTrailerOffset);
- CFX_BinaryBuf buf(iSize);
- uint8_t* pBuf = buf.GetBuffer();
- if (!pBuf) {
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
- }
- if (!m_pFileRead->ReadBlock(pBuf, m_dwTrailerOffset, iSize)) {
- return FALSE;
- }
- CFX_SmartPointer<IFX_FileStream> file(FX_CreateMemoryStream(pBuf, (size_t)iSize, FALSE));
- m_syntaxParser.InitParser(file.Get(), 0);
- CPDF_Object *pTrailer = m_syntaxParser.GetObject(NULL, 0, 0, 0);
- if (!pTrailer) {
- m_Pos += m_syntaxParser.SavePos();
- pHints->AddSegment(m_Pos, iTrailerSize);
- return FALSE;
- }
- if (pTrailer->GetType() != PDFOBJ_DICTIONARY) {
- return FALSE;
- }
- CPDF_Dictionary *pTrailerDict = pTrailer->GetDict();
- if (pTrailerDict) {
- CPDF_Object *pEncrypt = pTrailerDict->GetElement("Encrypt");
- if (pEncrypt && pEncrypt->GetType() == PDFOBJ_REFERENCE) {
- m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
- pTrailer->Release();
- return TRUE;
- }
- }
- FX_DWORD xrefpos = GetDirectInteger(pTrailer->GetDict(), FX_BSTRC("Prev"));
- if (xrefpos) {
- m_dwPrevXRefOffset = GetDirectInteger(pTrailer->GetDict(), FX_BSTRC("XRefStm"));
- pTrailer->Release();
- if (m_dwPrevXRefOffset) {
- m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
- } else {
- m_dwPrevXRefOffset = xrefpos;
- if (m_dwPrevXRefOffset >= m_dwFileLen) {
- m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
- } else {
- SetStartOffset(m_dwPrevXRefOffset);
- m_docStatus = PDF_DATAAVAIL_TRAILER_APPEND;
- }
- }
- return TRUE;
- }
- m_dwPrevXRefOffset = 0;
- m_docStatus = PDF_DATAAVAIL_TRAILER_APPEND;
- pTrailer->Release();
- return TRUE;
+int32_t CPDF_DataAvail::CheckCrossRefStream(IFX_DownloadHints* pHints,
+ FX_FILESIZE& xref_offset) {
+ xref_offset = 0;
+ FX_DWORD req_size =
+ (FX_DWORD)(m_Pos + 512 > m_dwFileLen ? m_dwFileLen - m_Pos : 512);
+ if (m_pFileAvail->IsDataAvail(m_Pos, req_size)) {
+ int32_t iSize = (int32_t)(m_Pos + req_size - m_dwCurrentXRefSteam);
+ CFX_BinaryBuf buf(iSize);
+ uint8_t* pBuf = buf.GetBuffer();
+ m_pFileRead->ReadBlock(pBuf, m_dwCurrentXRefSteam, iSize);
+ CFX_SmartPointer<IFX_FileStream> file(
+ FX_CreateMemoryStream(pBuf, (size_t)iSize, FALSE));
+ m_parser.m_Syntax.InitParser(file.Get(), 0);
+ FX_BOOL bNumber = FALSE;
+ CFX_ByteString objnum = m_parser.m_Syntax.GetNextWord(bNumber);
+ if (!bNumber) {
+ return -1;
}
- pHints->AddSegment(m_Pos, iTrailerSize);
- return FALSE;
-}
-FX_BOOL CPDF_DataAvail::CheckPage(int32_t iPage, IFX_DownloadHints* pHints)
-{
- while (TRUE) {
- switch (m_docStatus) {
- case PDF_DATAAVAIL_PAGETREE:
- if (!LoadDocPages(pHints)) {
- return FALSE;
- }
- break;
- case PDF_DATAAVAIL_PAGE:
- if (!LoadDocPage(iPage, pHints)) {
- return FALSE;
- }
- break;
- case PDF_DATAAVAIL_ERROR:
- return LoadAllFile(pHints);
- default:
- m_bPagesTreeLoad = TRUE;
- m_bPagesLoad = TRUE;
- m_bCurPageDictLoadOK = TRUE;
- m_docStatus = PDF_DATAAVAIL_PAGE;
- return TRUE;
- }
+ FX_DWORD objNum = FXSYS_atoi(objnum);
+ CPDF_Object* pObj = m_parser.ParseIndirectObjectAt(NULL, 0, objNum, NULL);
+ if (!pObj) {
+ m_Pos += m_parser.m_Syntax.SavePos();
+ return 0;
+ }
+ CPDF_Dictionary* pDict = pObj->GetDict();
+ CPDF_Object* pName = pDict ? pDict->GetElement(FX_BSTRC("Type")) : NULL;
+ if (pName && pName->GetType() == PDFOBJ_NAME) {
+ if (pName->GetString() == FX_BSTRC("XRef")) {
+ m_Pos += m_parser.m_Syntax.SavePos();
+ xref_offset = pObj->GetDict()->GetInteger(FX_BSTRC("Prev"));
+ pObj->Release();
+ return 1;
+ }
}
+ pObj->Release();
+ return -1;
+ }
+ pHints->AddSegment(m_Pos, req_size);
+ return 0;
}
-FX_BOOL CPDF_DataAvail::CheckArrayPageNode(FX_DWORD dwPageNo, CPDF_PageNode *pPageNode, IFX_DownloadHints* pHints)
-{
- FX_BOOL bExist = FALSE;
- CPDF_Object *pPages = GetObject(dwPageNo, pHints, &bExist);
- if (!bExist) {
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
- }
- if (!pPages) {
- if (m_docStatus == PDF_DATAAVAIL_ERROR) {
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
- }
+inline void CPDF_DataAvail::SetStartOffset(FX_FILESIZE dwOffset) {
+ m_Pos = dwOffset;
+}
+#define MAX_WORD_BUFFER 256
+FX_BOOL CPDF_DataAvail::GetNextToken(CFX_ByteString& token) {
+ m_WordSize = 0;
+ uint8_t ch;
+ if (!GetNextChar(ch)) {
+ return FALSE;
+ }
+ uint8_t type = PDF_CharType[ch];
+ while (1) {
+ while (type == 'W') {
+ if (!GetNextChar(ch)) {
return FALSE;
+ }
+ type = PDF_CharType[ch];
}
- if (pPages->GetType() != PDFOBJ_ARRAY) {
- pPages->Release();
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
+ if (ch != '%') {
+ break;
}
- pPageNode->m_type = PDF_PAGENODE_PAGES;
- CPDF_Array* pArray = (CPDF_Array*)pPages;
- for (FX_DWORD i = 0; i < pArray->GetCount(); ++i) {
- CPDF_Object *pKid = (CPDF_Object *)pArray->GetElement(i);
- if (!pKid || pKid->GetType() != PDFOBJ_REFERENCE) {
- continue;
+ while (1) {
+ if (!GetNextChar(ch)) {
+ return FALSE;
+ }
+ if (ch == '\r' || ch == '\n') {
+ break;
+ }
+ }
+ type = PDF_CharType[ch];
+ }
+ if (type == 'D') {
+ m_WordBuffer[m_WordSize++] = ch;
+ if (ch == '/') {
+ while (1) {
+ if (!GetNextChar(ch)) {
+ return FALSE;
}
- CPDF_PageNode *pNode = new CPDF_PageNode();
- pPageNode->m_childNode.Add(pNode);
- pNode->m_dwPageNo = ((CPDF_Reference*)pKid)->GetRefObjNum();
+ type = PDF_CharType[ch];
+ if (type != 'R' && type != 'N') {
+ m_Pos--;
+ CFX_ByteString ret(m_WordBuffer, m_WordSize);
+ token = ret;
+ return TRUE;
+ }
+ if (m_WordSize < MAX_WORD_BUFFER) {
+ m_WordBuffer[m_WordSize++] = ch;
+ }
+ }
+ } else if (ch == '<') {
+ if (!GetNextChar(ch)) {
+ return FALSE;
+ }
+ if (ch == '<') {
+ m_WordBuffer[m_WordSize++] = ch;
+ } else {
+ m_Pos--;
+ }
+ } else if (ch == '>') {
+ if (!GetNextChar(ch)) {
+ return FALSE;
+ }
+ if (ch == '>') {
+ m_WordBuffer[m_WordSize++] = ch;
+ } else {
+ m_Pos--;
+ }
}
- pPages->Release();
+ CFX_ByteString ret(m_WordBuffer, m_WordSize);
+ token = ret;
return TRUE;
-}
-FX_BOOL CPDF_DataAvail::CheckUnkownPageNode(FX_DWORD dwPageNo, CPDF_PageNode *pPageNode, IFX_DownloadHints* pHints)
-{
- FX_BOOL bExist = FALSE;
- CPDF_Object *pPage = GetObject(dwPageNo, pHints, &bExist);
- if (!bExist) {
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
+ }
+ while (1) {
+ if (m_WordSize < MAX_WORD_BUFFER) {
+ m_WordBuffer[m_WordSize++] = ch;
}
- if (!pPage) {
- if (m_docStatus == PDF_DATAAVAIL_ERROR) {
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
- }
- return FALSE;
+ if (!GetNextChar(ch)) {
+ return FALSE;
}
- if (pPage->GetType() == PDFOBJ_ARRAY) {
- pPageNode->m_dwPageNo = dwPageNo;
- pPageNode->m_type = PDF_PAGENODE_ARRAY;
- pPage->Release();
- return TRUE;
+ type = PDF_CharType[ch];
+ if (type == 'D' || type == 'W') {
+ m_Pos--;
+ break;
}
- if (pPage->GetType() != PDFOBJ_DICTIONARY) {
- pPage->Release();
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
+ }
+ CFX_ByteString ret(m_WordBuffer, m_WordSize);
+ token = ret;
+ return TRUE;
+}
+FX_BOOL CPDF_DataAvail::GetNextChar(uint8_t& ch) {
+ FX_FILESIZE pos = m_Pos;
+ if (pos >= m_dwFileLen) {
+ return FALSE;
+ }
+ if (m_bufferOffset >= pos ||
+ (FX_FILESIZE)(m_bufferOffset + m_bufferSize) <= pos) {
+ FX_FILESIZE read_pos = pos;
+ FX_DWORD read_size = 512;
+ if ((FX_FILESIZE)read_size > m_dwFileLen) {
+ read_size = (FX_DWORD)m_dwFileLen;
+ }
+ if ((FX_FILESIZE)(read_pos + read_size) > m_dwFileLen) {
+ read_pos = m_dwFileLen - read_size;
+ }
+ if (!m_pFileRead->ReadBlock(m_bufferData, read_pos, read_size)) {
+ return FALSE;
+ }
+ m_bufferOffset = read_pos;
+ m_bufferSize = read_size;
+ }
+ ch = m_bufferData[pos - m_bufferOffset];
+ m_Pos++;
+ return TRUE;
+}
+FX_BOOL CPDF_DataAvail::CheckCrossRefItem(IFX_DownloadHints* pHints) {
+ int32_t iSize = 0;
+ CFX_ByteString token;
+ while (1) {
+ if (!GetNextToken(token)) {
+ iSize = (int32_t)(m_Pos + 512 > m_dwFileLen ? m_dwFileLen - m_Pos : 512);
+ pHints->AddSegment(m_Pos, iSize);
+ return FALSE;
}
- pPageNode->m_dwPageNo = dwPageNo;
- CPDF_Dictionary* pDict = pPage->GetDict();
- CFX_ByteString type = pDict ? pDict->GetString(FX_BSTRC("Type")) : CFX_ByteString();
- if (type == FX_BSTRC("Pages")) {
- pPageNode->m_type = PDF_PAGENODE_PAGES;
- CPDF_Object *pKids = pDict->GetElement(FX_BSTRC("Kids"));
- if (!pKids) {
- m_docStatus = PDF_DATAAVAIL_PAGE;
- return TRUE;
- }
- switch (pKids->GetType()) {
- case PDFOBJ_REFERENCE: {
- CPDF_Reference *pKid = (CPDF_Reference *)pKids;
- CPDF_PageNode *pNode = new CPDF_PageNode();
- pPageNode->m_childNode.Add(pNode);
- pNode->m_dwPageNo = pKid->GetRefObjNum();
- }
- break;
- case PDFOBJ_ARRAY: {
- CPDF_Array *pKidsArray = (CPDF_Array *)pKids;
- for (FX_DWORD i = 0; i < pKidsArray->GetCount(); ++i) {
- CPDF_Object *pKid = (CPDF_Object *)pKidsArray->GetElement(i);
- if (!pKid || pKid->GetType() != PDFOBJ_REFERENCE) {
- continue;
- }
- CPDF_PageNode *pNode = new CPDF_PageNode();
- pPageNode->m_childNode.Add(pNode);
- pNode->m_dwPageNo = ((CPDF_Reference*)pKid)->GetRefObjNum();
- }
- }
- break;
- default:
- break;
- }
- } else if (type == FX_BSTRC("Page")) {
- pPageNode->m_type = PDF_PAGENODE_PAGE;
+ if (token == "trailer") {
+ m_dwTrailerOffset = m_Pos;
+ m_docStatus = PDF_DATAAVAIL_TRAILER;
+ return TRUE;
+ }
+ }
+}
+FX_BOOL CPDF_DataAvail::CheckAllCrossRefStream(IFX_DownloadHints* pHints) {
+ FX_FILESIZE xref_offset = 0;
+ int32_t nRet = CheckCrossRefStream(pHints, xref_offset);
+ if (nRet == 1) {
+ if (!xref_offset) {
+ m_docStatus = PDF_DATAAVAIL_LOADALLCRSOSSREF;
} else {
- pPage->Release();
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
+ m_dwCurrentXRefSteam = xref_offset;
+ m_Pos = xref_offset;
}
- pPage->Release();
return TRUE;
+ }
+ if (nRet == -1) {
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ }
+ return FALSE;
}
-FX_BOOL CPDF_DataAvail::CheckPageNode(CPDF_PageNode &pageNodes, int32_t iPage, int32_t &iCount, IFX_DownloadHints* pHints)
-{
- int32_t iSize = pageNodes.m_childNode.GetSize();
- if (iSize <= 0 || iPage >= iSize) {
- m_docStatus = PDF_DATAAVAIL_ERROR;
+FX_BOOL CPDF_DataAvail::CheckCrossRef(IFX_DownloadHints* pHints) {
+ int32_t iSize = 0;
+ CFX_ByteString token;
+ if (!GetNextToken(token)) {
+ iSize = (int32_t)(m_Pos + 512 > m_dwFileLen ? m_dwFileLen - m_Pos : 512);
+ pHints->AddSegment(m_Pos, iSize);
+ return FALSE;
+ }
+ if (token == "xref") {
+ m_CrossOffset.InsertAt(0, m_dwXRefOffset);
+ while (1) {
+ if (!GetNextToken(token)) {
+ iSize =
+ (int32_t)(m_Pos + 512 > m_dwFileLen ? m_dwFileLen - m_Pos : 512);
+ pHints->AddSegment(m_Pos, iSize);
+ m_docStatus = PDF_DATAAVAIL_CROSSREF_ITEM;
return FALSE;
+ }
+ if (token == "trailer") {
+ m_dwTrailerOffset = m_Pos;
+ m_docStatus = PDF_DATAAVAIL_TRAILER;
+ return TRUE;
+ }
}
- for (int32_t i = 0; i < iSize; ++i) {
- CPDF_PageNode *pNode = (CPDF_PageNode*)pageNodes.m_childNode.GetAt(i);
- if (!pNode) {
- continue;
- }
- switch (pNode->m_type) {
- case PDF_PAGENODE_UNKOWN:
- if (!CheckUnkownPageNode(pNode->m_dwPageNo, pNode, pHints)) {
- return FALSE;
- }
- --i;
- break;
- case PDF_PAGENODE_PAGE:
- iCount++;
- if (iPage == iCount && m_pDocument) {
- m_pDocument->m_PageList.SetAt(iPage, pNode->m_dwPageNo);
- }
- break;
- case PDF_PAGENODE_PAGES:
- if (!CheckPageNode(*pNode, iPage, iCount, pHints)) {
- return FALSE;
- }
- break;
- case PDF_PAGENODE_ARRAY:
- if (!CheckArrayPageNode(pNode->m_dwPageNo, pNode, pHints)) {
- return FALSE;
- }
- --i;
- break;
- }
- if (iPage == iCount) {
- m_docStatus = PDF_DATAAVAIL_DONE;
- return TRUE;
- }
- }
+ } else {
+ m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
return TRUE;
+ }
+ return FALSE;
+}
+FX_BOOL CPDF_DataAvail::CheckTrailerAppend(IFX_DownloadHints* pHints) {
+ if (m_Pos < m_dwFileLen) {
+ FX_FILESIZE dwAppendPos = m_Pos + m_syntaxParser.SavePos();
+ int32_t iSize = (int32_t)(
+ dwAppendPos + 512 > m_dwFileLen ? m_dwFileLen - dwAppendPos : 512);
+ if (!m_pFileAvail->IsDataAvail(dwAppendPos, iSize)) {
+ pHints->AddSegment(dwAppendPos, iSize);
+ return FALSE;
+ }
+ }
+ if (m_dwPrevXRefOffset) {
+ SetStartOffset(m_dwPrevXRefOffset);
+ m_docStatus = PDF_DATAAVAIL_CROSSREF;
+ } else {
+ m_docStatus = PDF_DATAAVAIL_LOADALLCRSOSSREF;
+ }
+ return TRUE;
}
-FX_BOOL CPDF_DataAvail::LoadDocPage(int32_t iPage, IFX_DownloadHints* pHints)
-{
- if (m_pDocument->GetPageCount() <= iPage || m_pDocument->m_PageList.GetAt(iPage)) {
- m_docStatus = PDF_DATAAVAIL_DONE;
+FX_BOOL CPDF_DataAvail::CheckTrailer(IFX_DownloadHints* pHints) {
+ int32_t iTrailerSize =
+ (int32_t)(m_Pos + 512 > m_dwFileLen ? m_dwFileLen - m_Pos : 512);
+ if (m_pFileAvail->IsDataAvail(m_Pos, iTrailerSize)) {
+ int32_t iSize = (int32_t)(m_Pos + iTrailerSize - m_dwTrailerOffset);
+ CFX_BinaryBuf buf(iSize);
+ uint8_t* pBuf = buf.GetBuffer();
+ if (!pBuf) {
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ return FALSE;
+ }
+ if (!m_pFileRead->ReadBlock(pBuf, m_dwTrailerOffset, iSize)) {
+ return FALSE;
+ }
+ CFX_SmartPointer<IFX_FileStream> file(
+ FX_CreateMemoryStream(pBuf, (size_t)iSize, FALSE));
+ m_syntaxParser.InitParser(file.Get(), 0);
+ CPDF_Object* pTrailer = m_syntaxParser.GetObject(NULL, 0, 0, 0);
+ if (!pTrailer) {
+ m_Pos += m_syntaxParser.SavePos();
+ pHints->AddSegment(m_Pos, iTrailerSize);
+ return FALSE;
+ }
+ if (pTrailer->GetType() != PDFOBJ_DICTIONARY) {
+ return FALSE;
+ }
+ CPDF_Dictionary* pTrailerDict = pTrailer->GetDict();
+ if (pTrailerDict) {
+ CPDF_Object* pEncrypt = pTrailerDict->GetElement("Encrypt");
+ if (pEncrypt && pEncrypt->GetType() == PDFOBJ_REFERENCE) {
+ m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
+ pTrailer->Release();
return TRUE;
- }
- if (m_pageNodes.m_type == PDF_PAGENODE_PAGE) {
- if (iPage == 0) {
- m_docStatus = PDF_DATAAVAIL_DONE;
- return TRUE;
+ }
+ }
+ FX_DWORD xrefpos = GetDirectInteger(pTrailer->GetDict(), FX_BSTRC("Prev"));
+ if (xrefpos) {
+ m_dwPrevXRefOffset =
+ GetDirectInteger(pTrailer->GetDict(), FX_BSTRC("XRefStm"));
+ pTrailer->Release();
+ if (m_dwPrevXRefOffset) {
+ m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
+ } else {
+ m_dwPrevXRefOffset = xrefpos;
+ if (m_dwPrevXRefOffset >= m_dwFileLen) {
+ m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
+ } else {
+ SetStartOffset(m_dwPrevXRefOffset);
+ m_docStatus = PDF_DATAAVAIL_TRAILER_APPEND;
}
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return TRUE;
+ }
+ return TRUE;
}
- int32_t iCount = -1;
- return CheckPageNode(m_pageNodes, iPage, iCount, pHints);
+ m_dwPrevXRefOffset = 0;
+ m_docStatus = PDF_DATAAVAIL_TRAILER_APPEND;
+ pTrailer->Release();
+ return TRUE;
+ }
+ pHints->AddSegment(m_Pos, iTrailerSize);
+ return FALSE;
}
-FX_BOOL CPDF_DataAvail::CheckPageCount(IFX_DownloadHints* pHints)
-{
- FX_BOOL bExist = FALSE;
- CPDF_Object *pPages = GetObject(m_PagesObjNum, pHints, &bExist);
- if (!bExist) {
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
- }
- if (!pPages) {
- return FALSE;
- }
- CPDF_Dictionary* pPagesDict = pPages->GetDict();
- if (!pPagesDict) {
- pPages->Release();
- m_docStatus = PDF_DATAAVAIL_ERROR;
- return FALSE;
- }
- if (!pPagesDict->KeyExist(FX_BSTRC("Kids"))) {
- pPages->Release();
+FX_BOOL CPDF_DataAvail::CheckPage(int32_t iPage, IFX_DownloadHints* pHints) {
+ while (TRUE) {
+ switch (m_docStatus) {
+ case PDF_DATAAVAIL_PAGETREE:
+ if (!LoadDocPages(pHints)) {
+ return FALSE;
+ }
+ break;
+ case PDF_DATAAVAIL_PAGE:
+ if (!LoadDocPage(iPage, pHints)) {
+ return FALSE;
+ }
+ break;
+ case PDF_DATAAVAIL_ERROR:
+ return LoadAllFile(pHints);
+ default:
+ m_bPagesTreeLoad = TRUE;
+ m_bPagesLoad = TRUE;
+ m_bCurPageDictLoadOK = TRUE;
+ m_docStatus = PDF_DATAAVAIL_PAGE;
return TRUE;
}
- int count = pPagesDict->GetInteger(FX_BSTRC("Count"));
- if (count > 0) {
- pPages->Release();
- return TRUE;
+ }
+}
+FX_BOOL CPDF_DataAvail::CheckArrayPageNode(FX_DWORD dwPageNo,
+ CPDF_PageNode* pPageNode,
+ IFX_DownloadHints* pHints) {
+ FX_BOOL bExist = FALSE;
+ CPDF_Object* pPages = GetObject(dwPageNo, pHints, &bExist);
+ if (!bExist) {
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ return FALSE;
+ }
+ if (!pPages) {
+ if (m_docStatus == PDF_DATAAVAIL_ERROR) {
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ return FALSE;
}
+ return FALSE;
+ }
+ if (pPages->GetType() != PDFOBJ_ARRAY) {
pPages->Release();
+ m_docStatus = PDF_DATAAVAIL_ERROR;
return FALSE;
+ }
+ pPageNode->m_type = PDF_PAGENODE_PAGES;
+ CPDF_Array* pArray = (CPDF_Array*)pPages;
+ for (FX_DWORD i = 0; i < pArray->GetCount(); ++i) {
+ CPDF_Object* pKid = (CPDF_Object*)pArray->GetElement(i);
+ if (!pKid || pKid->GetType() != PDFOBJ_REFERENCE) {
+ continue;
+ }
+ CPDF_PageNode* pNode = new CPDF_PageNode();
+ pPageNode->m_childNode.Add(pNode);
+ pNode->m_dwPageNo = ((CPDF_Reference*)pKid)->GetRefObjNum();
+ }
+ pPages->Release();
+ return TRUE;
}
-FX_BOOL CPDF_DataAvail::LoadDocPages(IFX_DownloadHints* pHints)
-{
- if (!CheckUnkownPageNode(m_PagesObjNum, &m_pageNodes, pHints)) {
- return FALSE;
+FX_BOOL CPDF_DataAvail::CheckUnkownPageNode(FX_DWORD dwPageNo,
+ CPDF_PageNode* pPageNode,
+ IFX_DownloadHints* pHints) {
+ FX_BOOL bExist = FALSE;
+ CPDF_Object* pPage = GetObject(dwPageNo, pHints, &bExist);
+ if (!bExist) {
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ return FALSE;
+ }
+ if (!pPage) {
+ if (m_docStatus == PDF_DATAAVAIL_ERROR) {
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ return FALSE;
}
- if (CheckPageCount(pHints)) {
- m_docStatus = PDF_DATAAVAIL_PAGE;
- return TRUE;
+ return FALSE;
+ }
+ if (pPage->GetType() == PDFOBJ_ARRAY) {
+ pPageNode->m_dwPageNo = dwPageNo;
+ pPageNode->m_type = PDF_PAGENODE_ARRAY;
+ pPage->Release();
+ return TRUE;
+ }
+ if (pPage->GetType() != PDFOBJ_DICTIONARY) {
+ pPage->Release();
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ return FALSE;
+ }
+ pPageNode->m_dwPageNo = dwPageNo;
+ CPDF_Dictionary* pDict = pPage->GetDict();
+ CFX_ByteString type =
+ pDict ? pDict->GetString(FX_BSTRC("Type")) : CFX_ByteString();
+ if (type == FX_BSTRC("Pages")) {
+ pPageNode->m_type = PDF_PAGENODE_PAGES;
+ CPDF_Object* pKids = pDict->GetElement(FX_BSTRC("Kids"));
+ if (!pKids) {
+ m_docStatus = PDF_DATAAVAIL_PAGE;
+ return TRUE;
}
- m_bTotalLoadPageTree = TRUE;
+ switch (pKids->GetType()) {
+ case PDFOBJ_REFERENCE: {
+ CPDF_Reference* pKid = (CPDF_Reference*)pKids;
+ CPDF_PageNode* pNode = new CPDF_PageNode();
+ pPageNode->m_childNode.Add(pNode);
+ pNode->m_dwPageNo = pKid->GetRefObjNum();
+ } break;
+ case PDFOBJ_ARRAY: {
+ CPDF_Array* pKidsArray = (CPDF_Array*)pKids;
+ for (FX_DWORD i = 0; i < pKidsArray->GetCount(); ++i) {
+ CPDF_Object* pKid = (CPDF_Object*)pKidsArray->GetElement(i);
+ if (!pKid || pKid->GetType() != PDFOBJ_REFERENCE) {
+ continue;
+ }
+ CPDF_PageNode* pNode = new CPDF_PageNode();
+ pPageNode->m_childNode.Add(pNode);
+ pNode->m_dwPageNo = ((CPDF_Reference*)pKid)->GetRefObjNum();
+ }
+ } break;
+ default:
+ break;
+ }
+ } else if (type == FX_BSTRC("Page")) {
+ pPageNode->m_type = PDF_PAGENODE_PAGE;
+ } else {
+ pPage->Release();
+ m_docStatus = PDF_DATAAVAIL_ERROR;
return FALSE;
+ }
+ pPage->Release();
+ return TRUE;
}
-FX_BOOL CPDF_DataAvail::LoadPages(IFX_DownloadHints* pHints)
-{
- while (!m_bPagesTreeLoad) {
- if (!CheckPageStatus(pHints)) {
- return FALSE;
- }
- }
- if (m_bPagesLoad) {
- return TRUE;
+FX_BOOL CPDF_DataAvail::CheckPageNode(CPDF_PageNode& pageNodes,
+ int32_t iPage,
+ int32_t& iCount,
+ IFX_DownloadHints* pHints) {
+ int32_t iSize = pageNodes.m_childNode.GetSize();
+ if (iSize <= 0 || iPage >= iSize) {
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ return FALSE;
+ }
+ for (int32_t i = 0; i < iSize; ++i) {
+ CPDF_PageNode* pNode = (CPDF_PageNode*)pageNodes.m_childNode.GetAt(i);
+ if (!pNode) {
+ continue;
+ }
+ switch (pNode->m_type) {
+ case PDF_PAGENODE_UNKOWN:
+ if (!CheckUnkownPageNode(pNode->m_dwPageNo, pNode, pHints)) {
+ return FALSE;
+ }
+ --i;
+ break;
+ case PDF_PAGENODE_PAGE:
+ iCount++;
+ if (iPage == iCount && m_pDocument) {
+ m_pDocument->m_PageList.SetAt(iPage, pNode->m_dwPageNo);
+ }
+ break;
+ case PDF_PAGENODE_PAGES:
+ if (!CheckPageNode(*pNode, iPage, iCount, pHints)) {
+ return FALSE;
+ }
+ break;
+ case PDF_PAGENODE_ARRAY:
+ if (!CheckArrayPageNode(pNode->m_dwPageNo, pNode, pHints)) {
+ return FALSE;
+ }
+ --i;
+ break;
+ }
+ if (iPage == iCount) {
+ m_docStatus = PDF_DATAAVAIL_DONE;
+ return TRUE;
+ }
+ }
+ return TRUE;
+}
+FX_BOOL CPDF_DataAvail::LoadDocPage(int32_t iPage, IFX_DownloadHints* pHints) {
+ if (m_pDocument->GetPageCount() <= iPage ||
+ m_pDocument->m_PageList.GetAt(iPage)) {
+ m_docStatus = PDF_DATAAVAIL_DONE;
+ return TRUE;
+ }
+ if (m_pageNodes.m_type == PDF_PAGENODE_PAGE) {
+ if (iPage == 0) {
+ m_docStatus = PDF_DATAAVAIL_DONE;
+ return TRUE;
}
- m_pDocument->LoadPages();
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ return TRUE;
+ }
+ int32_t iCount = -1;
+ return CheckPageNode(m_pageNodes, iPage, iCount, pHints);
+}
+FX_BOOL CPDF_DataAvail::CheckPageCount(IFX_DownloadHints* pHints) {
+ FX_BOOL bExist = FALSE;
+ CPDF_Object* pPages = GetObject(m_PagesObjNum, pHints, &bExist);
+ if (!bExist) {
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ return FALSE;
+ }
+ if (!pPages) {
return FALSE;
+ }
+ CPDF_Dictionary* pPagesDict = pPages->GetDict();
+ if (!pPagesDict) {
+ pPages->Release();
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ return FALSE;
+ }
+ if (!pPagesDict->KeyExist(FX_BSTRC("Kids"))) {
+ pPages->Release();
+ return TRUE;
+ }
+ int count = pPagesDict->GetInteger(FX_BSTRC("Count"));
+ if (count > 0) {
+ pPages->Release();
+ return TRUE;
+ }
+ pPages->Release();
+ return FALSE;
}
-FX_BOOL CPDF_DataAvail::CheckLinearizedData(IFX_DownloadHints* pHints)
-{
- if (m_bLinearedDataOK) {
- return TRUE;
+FX_BOOL CPDF_DataAvail::LoadDocPages(IFX_DownloadHints* pHints) {
+ if (!CheckUnkownPageNode(m_PagesObjNum, &m_pageNodes, pHints)) {
+ return FALSE;
+ }
+ if (CheckPageCount(pHints)) {
+ m_docStatus = PDF_DATAAVAIL_PAGE;
+ return TRUE;
+ }
+ m_bTotalLoadPageTree = TRUE;
+ return FALSE;
+}
+FX_BOOL CPDF_DataAvail::LoadPages(IFX_DownloadHints* pHints) {
+ while (!m_bPagesTreeLoad) {
+ if (!CheckPageStatus(pHints)) {
+ return FALSE;
}
+ }
+ if (m_bPagesLoad) {
+ return TRUE;
+ }
+ m_pDocument->LoadPages();
+ return FALSE;
+}
+FX_BOOL CPDF_DataAvail::CheckLinearizedData(IFX_DownloadHints* pHints) {
+ if (m_bLinearedDataOK) {
+ return TRUE;
+ }
- if (!m_bMainXRefLoadTried) {
- FX_SAFE_DWORD data_size = m_dwFileLen;
- data_size -= m_dwLastXRefOffset;
- if (!data_size.IsValid()) {
- return FALSE;
- }
- if (!m_pFileAvail->IsDataAvail(m_dwLastXRefOffset, data_size.ValueOrDie())) {
- pHints->AddSegment(m_dwLastXRefOffset, data_size.ValueOrDie());
- return FALSE;
- }
- FX_DWORD dwRet = ((CPDF_Parser *)m_pDocument->GetParser())->LoadLinearizedMainXRefTable();
- m_bMainXRefLoadTried = TRUE;
- if (dwRet != PDFPARSE_ERROR_SUCCESS) {
- return FALSE;
- }
- if (!PreparePageItem()) {
- return FALSE;
- }
- m_bMainXRefLoadedOK = TRUE;
- m_bLinearedDataOK = TRUE;
+ if (!m_bMainXRefLoadTried) {
+ FX_SAFE_DWORD data_size = m_dwFileLen;
+ data_size -= m_dwLastXRefOffset;
+ if (!data_size.IsValid()) {
+ return FALSE;
+ }
+ if (!m_pFileAvail->IsDataAvail(m_dwLastXRefOffset,
+ data_size.ValueOrDie())) {
+ pHints->AddSegment(m_dwLastXRefOffset, data_size.ValueOrDie());
+ return FALSE;
+ }
+ FX_DWORD dwRet =
+ ((CPDF_Parser*)m_pDocument->GetParser())->LoadLinearizedMainXRefTable();
+ m_bMainXRefLoadTried = TRUE;
+ if (dwRet != PDFPARSE_ERROR_SUCCESS) {
+ return FALSE;
+ }
+ if (!PreparePageItem()) {
+ return FALSE;
}
+ m_bMainXRefLoadedOK = TRUE;
+ m_bLinearedDataOK = TRUE;
+ }
- return m_bLinearedDataOK;
+ return m_bLinearedDataOK;
}
-FX_BOOL CPDF_DataAvail::CheckPageAnnots(int32_t iPage, IFX_DownloadHints* pHints)
-{
- if (!m_objs_array.GetSize()) {
- m_objs_array.RemoveAll();
- m_objnum_array.RemoveAll();
- CPDF_Dictionary *pPageDict = m_pDocument->GetPage(iPage);
- if (!pPageDict) {
- return TRUE;
- }
- CPDF_Object *pAnnots = pPageDict->GetElement(FX_BSTRC("Annots"));
- if (!pAnnots) {
- return TRUE;
- }
- CFX_PtrArray obj_array;
- obj_array.Add(pAnnots);
- FX_BOOL bRet = IsObjectsAvail(obj_array, FALSE, pHints, m_objs_array);
- if (bRet) {
- m_objs_array.RemoveAll();
- }
- return bRet;
- }
- CFX_PtrArray new_objs_array;
- FX_BOOL bRet = IsObjectsAvail(m_objs_array, FALSE, pHints, new_objs_array);
+FX_BOOL CPDF_DataAvail::CheckPageAnnots(int32_t iPage,
+ IFX_DownloadHints* pHints) {
+ if (!m_objs_array.GetSize()) {
m_objs_array.RemoveAll();
- if (!bRet) {
- m_objs_array.Append(new_objs_array);
+ m_objnum_array.RemoveAll();
+ CPDF_Dictionary* pPageDict = m_pDocument->GetPage(iPage);
+ if (!pPageDict) {
+ return TRUE;
+ }
+ CPDF_Object* pAnnots = pPageDict->GetElement(FX_BSTRC("Annots"));
+ if (!pAnnots) {
+ return TRUE;
+ }
+ CFX_PtrArray obj_array;
+ obj_array.Add(pAnnots);
+ FX_BOOL bRet = IsObjectsAvail(obj_array, FALSE, pHints, m_objs_array);
+ if (bRet) {
+ m_objs_array.RemoveAll();
}
return bRet;
+ }
+ CFX_PtrArray new_objs_array;
+ FX_BOOL bRet = IsObjectsAvail(m_objs_array, FALSE, pHints, new_objs_array);
+ m_objs_array.RemoveAll();
+ if (!bRet) {
+ m_objs_array.Append(new_objs_array);
+ }
+ return bRet;
}
-FX_BOOL CPDF_DataAvail::CheckLinearizedFirstPage(int32_t iPage, IFX_DownloadHints* pHints)
-{
- if (!m_bAnnotsLoad) {
- if (!CheckPageAnnots(iPage, pHints)) {
- return FALSE;
- }
- m_bAnnotsLoad = TRUE;
- }
- if (m_bAnnotsLoad) {
- if (!CheckLinearizedData(pHints))
- return FALSE;
- }
- m_bPageLoadedOK = FALSE;
+FX_BOOL CPDF_DataAvail::CheckLinearizedFirstPage(int32_t iPage,
+ IFX_DownloadHints* pHints) {
+ if (!m_bAnnotsLoad) {
+ if (!CheckPageAnnots(iPage, pHints)) {
+ return FALSE;
+ }
+ m_bAnnotsLoad = TRUE;
+ }
+ if (m_bAnnotsLoad) {
+ if (!CheckLinearizedData(pHints))
+ return FALSE;
+ }
+ m_bPageLoadedOK = FALSE;
+ return TRUE;
+}
+FX_BOOL CPDF_DataAvail::HaveResourceAncestor(CPDF_Dictionary* pDict) {
+ CFX_AutoRestorer<int> restorer(&s_CurrentDataAvailRecursionDepth);
+ if (++s_CurrentDataAvailRecursionDepth > kMaxDataAvailRecursionDepth) {
+ return FALSE;
+ }
+ CPDF_Object* pParent = pDict->GetElement("Parent");
+ if (!pParent) {
+ return FALSE;
+ }
+ CPDF_Dictionary* pParentDict = pParent->GetDict();
+ if (!pParentDict) {
+ return FALSE;
+ }
+ CPDF_Object* pRet = pParentDict->GetElement("Resources");
+ if (pRet) {
+ m_pPageResource = pRet;
return TRUE;
+ }
+ return HaveResourceAncestor(pParentDict);
}
-FX_BOOL CPDF_DataAvail::HaveResourceAncestor(CPDF_Dictionary *pDict)
-{
- CFX_AutoRestorer<int> restorer(&s_CurrentDataAvailRecursionDepth);
- if (++s_CurrentDataAvailRecursionDepth > kMaxDataAvailRecursionDepth) {
- return FALSE;
+FX_BOOL CPDF_DataAvail::IsPageAvail(int32_t iPage, IFX_DownloadHints* pHints) {
+ if (!m_pDocument) {
+ return FALSE;
+ }
+ if (IsFirstCheck(iPage)) {
+ m_bCurPageDictLoadOK = FALSE;
+ m_bPageLoadedOK = FALSE;
+ m_bAnnotsLoad = FALSE;
+ m_bNeedDownLoadResource = FALSE;
+ m_objs_array.RemoveAll();
+ m_objnum_array.RemoveAll();
+ }
+ if (m_pagesLoadState == NULL) {
+ m_pagesLoadState = new CFX_CMapDWordToDWord();
+ }
+ FX_DWORD dwPageLoad = 0;
+ if (m_pagesLoadState->Lookup(iPage, dwPageLoad) && dwPageLoad != 0) {
+ return TRUE;
+ }
+ if (m_bLinearized) {
+ if ((FX_DWORD)iPage == m_dwFirstPageNo) {
+ m_pagesLoadState->SetAt(iPage, TRUE);
+ return TRUE;
}
- CPDF_Object *pParent = pDict->GetElement("Parent");
- if (!pParent) {
- return FALSE;
+ if (!CheckLinearizedData(pHints)) {
+ return FALSE;
}
- CPDF_Dictionary *pParentDict = pParent->GetDict();
- if (!pParentDict) {
+ if (m_bMainXRefLoadedOK) {
+ if (m_bTotalLoadPageTree) {
+ if (!LoadPages(pHints)) {
+ return FALSE;
+ }
+ } else {
+ if (!m_bCurPageDictLoadOK && !CheckPage(iPage, pHints)) {
+ return FALSE;
+ }
+ }
+ } else {
+ if (!LoadAllFile(pHints)) {
return FALSE;
- }
- CPDF_Object *pRet = pParentDict->GetElement("Resources");
- if (pRet) {
- m_pPageResource = pRet;
- return TRUE;
- }
- return HaveResourceAncestor(pParentDict);
-}
-FX_BOOL CPDF_DataAvail::IsPageAvail(int32_t iPage, IFX_DownloadHints* pHints)
-{
- if (!m_pDocument) {
+ }
+ ((CPDF_Parser*)m_pDocument->GetParser())->RebuildCrossRef();
+ ResetFirstCheck(iPage);
+ return TRUE;
+ }
+ } else {
+ if (!m_bTotalLoadPageTree) {
+ if (!m_bCurPageDictLoadOK && !CheckPage(iPage, pHints)) {
return FALSE;
+ }
}
- if (IsFirstCheck(iPage)) {
- m_bCurPageDictLoadOK = FALSE;
- m_bPageLoadedOK = FALSE;
- m_bAnnotsLoad = FALSE;
- m_bNeedDownLoadResource = FALSE;
- m_objs_array.RemoveAll();
- m_objnum_array.RemoveAll();
- }
- if (m_pagesLoadState == NULL) {
- m_pagesLoadState = new CFX_CMapDWordToDWord();
+ }
+ if (m_bHaveAcroForm && !m_bAcroFormLoad) {
+ if (!CheckAcroFormSubObject(pHints)) {
+ return FALSE;
}
- FX_DWORD dwPageLoad = 0;
- if (m_pagesLoadState->Lookup(iPage, dwPageLoad) && dwPageLoad != 0) {
+ m_bAcroFormLoad = TRUE;
+ }
+ if (!m_bPageLoadedOK) {
+ if (!m_objs_array.GetSize()) {
+ m_objs_array.RemoveAll();
+ m_objnum_array.RemoveAll();
+ m_pPageDict = m_pDocument->GetPage(iPage);
+ if (!m_pPageDict) {
+ ResetFirstCheck(iPage);
return TRUE;
- }
- if (m_bLinearized) {
- if ((FX_DWORD)iPage == m_dwFirstPageNo) {
- m_pagesLoadState->SetAt(iPage, TRUE);
- return TRUE;
- }
- if (!CheckLinearizedData(pHints)) {
- return FALSE;
- }
- if (m_bMainXRefLoadedOK) {
- if (m_bTotalLoadPageTree) {
- if (!LoadPages(pHints)) {
- return FALSE;
- }
- } else {
- if (!m_bCurPageDictLoadOK && !CheckPage(iPage, pHints)) {
- return FALSE;
- }
- }
- } else {
- if (!LoadAllFile(pHints)) {
- return FALSE;
- }
- ((CPDF_Parser *)m_pDocument->GetParser())->RebuildCrossRef();
- ResetFirstCheck(iPage);
- return TRUE;
- }
+ }
+ CFX_PtrArray obj_array;
+ obj_array.Add(m_pPageDict);
+ FX_BOOL bRet = IsObjectsAvail(obj_array, TRUE, pHints, m_objs_array);
+ if (bRet) {
+ m_objs_array.RemoveAll();
+ m_bPageLoadedOK = TRUE;
+ } else {
+ return bRet;
+ }
} else {
- if (!m_bTotalLoadPageTree) {
- if (!m_bCurPageDictLoadOK && !CheckPage(iPage, pHints)) {
- return FALSE;
- }
- }
- }
- if (m_bHaveAcroForm && !m_bAcroFormLoad) {
- if (!CheckAcroFormSubObject(pHints)) {
- return FALSE;
- }
- m_bAcroFormLoad = TRUE;
- }
- if (!m_bPageLoadedOK) {
- if (!m_objs_array.GetSize()) {
- m_objs_array.RemoveAll();
- m_objnum_array.RemoveAll();
- m_pPageDict = m_pDocument->GetPage(iPage);
- if (!m_pPageDict) {
- ResetFirstCheck(iPage);
- return TRUE;
- }
- CFX_PtrArray obj_array;
- obj_array.Add(m_pPageDict);
- FX_BOOL bRet = IsObjectsAvail(obj_array, TRUE, pHints, m_objs_array);
- if (bRet) {
- m_objs_array.RemoveAll();
- m_bPageLoadedOK = TRUE;
- } else {
- return bRet;
- }
- } else {
- CFX_PtrArray new_objs_array;
- FX_BOOL bRet = IsObjectsAvail(m_objs_array, FALSE, pHints, new_objs_array);
- m_objs_array.RemoveAll();
- if (bRet) {
- m_bPageLoadedOK = TRUE;
- } else {
- m_objs_array.Append(new_objs_array);
- return bRet;
- }
- }
- }
- if (m_bPageLoadedOK) {
- if (!m_bAnnotsLoad) {
- if (!CheckPageAnnots(iPage, pHints)) {
- return FALSE;
- }
- m_bAnnotsLoad = TRUE;
- }
+ CFX_PtrArray new_objs_array;
+ FX_BOOL bRet =
+ IsObjectsAvail(m_objs_array, FALSE, pHints, new_objs_array);
+ m_objs_array.RemoveAll();
+ if (bRet) {
+ m_bPageLoadedOK = TRUE;
+ } else {
+ m_objs_array.Append(new_objs_array);
+ return bRet;
+ }
}
- if (m_pPageDict && !m_bNeedDownLoadResource) {
- m_pPageResource = m_pPageDict->GetElement("Resources");
- if (!m_pPageResource) {
- m_bNeedDownLoadResource = HaveResourceAncestor(m_pPageDict);
- } else {
- m_bNeedDownLoadResource = TRUE;
- }
+ }
+ if (m_bPageLoadedOK) {
+ if (!m_bAnnotsLoad) {
+ if (!CheckPageAnnots(iPage, pHints)) {
+ return FALSE;
+ }
+ m_bAnnotsLoad = TRUE;
+ }
+ }
+ if (m_pPageDict && !m_bNeedDownLoadResource) {
+ m_pPageResource = m_pPageDict->GetElement("Resources");
+ if (!m_pPageResource) {
+ m_bNeedDownLoadResource = HaveResourceAncestor(m_pPageDict);
+ } else {
+ m_bNeedDownLoadResource = TRUE;
}
- if (m_bNeedDownLoadResource) {
- FX_BOOL bRet = CheckResources(pHints);
- if (!bRet) {
- return FALSE;
- }
- m_bNeedDownLoadResource = FALSE;
+ }
+ if (m_bNeedDownLoadResource) {
+ FX_BOOL bRet = CheckResources(pHints);
+ if (!bRet) {
+ return FALSE;
}
- m_bPageLoadedOK = FALSE;
- m_bAnnotsLoad = FALSE;
- m_bCurPageDictLoadOK = FALSE;
- ResetFirstCheck(iPage);
- m_pagesLoadState->SetAt(iPage, TRUE);
- return TRUE;
+ m_bNeedDownLoadResource = FALSE;
+ }
+ m_bPageLoadedOK = FALSE;
+ m_bAnnotsLoad = FALSE;
+ m_bCurPageDictLoadOK = FALSE;
+ ResetFirstCheck(iPage);
+ m_pagesLoadState->SetAt(iPage, TRUE);
+ return TRUE;
}
-FX_BOOL CPDF_DataAvail::CheckResources(IFX_DownloadHints* pHints)
-{
- if (!m_objs_array.GetSize()) {
- m_objs_array.RemoveAll();
- CFX_PtrArray obj_array;
- obj_array.Add(m_pPageResource);
- FX_BOOL bRet = IsObjectsAvail(obj_array, TRUE, pHints, m_objs_array);
- if (bRet) {
- m_objs_array.RemoveAll();
- }
- return bRet;
- }
- CFX_PtrArray new_objs_array;
- FX_BOOL bRet = IsObjectsAvail(m_objs_array, FALSE, pHints, new_objs_array);
+FX_BOOL CPDF_DataAvail::CheckResources(IFX_DownloadHints* pHints) {
+ if (!m_objs_array.GetSize()) {
m_objs_array.RemoveAll();
- if (!bRet) {
- m_objs_array.Append(new_objs_array);
+ CFX_PtrArray obj_array;
+ obj_array.Add(m_pPageResource);
+ FX_BOOL bRet = IsObjectsAvail(obj_array, TRUE, pHints, m_objs_array);
+ if (bRet) {
+ m_objs_array.RemoveAll();
}
return bRet;
+ }
+ CFX_PtrArray new_objs_array;
+ FX_BOOL bRet = IsObjectsAvail(m_objs_array, FALSE, pHints, new_objs_array);
+ m_objs_array.RemoveAll();
+ if (!bRet) {
+ m_objs_array.Append(new_objs_array);
+ }
+ return bRet;
}
-void CPDF_DataAvail::GetLinearizedMainXRefInfo(FX_FILESIZE *pPos, FX_DWORD *pSize)
-{
- if (pPos) {
- *pPos = m_dwLastXRefOffset;
- }
- if (pSize) {
- *pSize = (FX_DWORD)(m_dwFileLen - m_dwLastXRefOffset);
- }
+void CPDF_DataAvail::GetLinearizedMainXRefInfo(FX_FILESIZE* pPos,
+ FX_DWORD* pSize) {
+ if (pPos) {
+ *pPos = m_dwLastXRefOffset;
+ }
+ if (pSize) {
+ *pSize = (FX_DWORD)(m_dwFileLen - m_dwLastXRefOffset);
+ }
}
-int32_t CPDF_DataAvail::IsFormAvail(IFX_DownloadHints *pHints)
-{
- if (!m_pDocument) {
- return PDFFORM_AVAIL;
- }
- if (!m_bLinearizedFormParamLoad) {
- CPDF_Dictionary *pRoot = m_pDocument->GetRoot();
- if (!pRoot) {
- return PDFFORM_AVAIL;
- }
- CPDF_Object *pAcroForm = pRoot->GetElement(FX_BSTRC("AcroForm"));
- if (!pAcroForm) {
- return PDFFORM_NOTEXIST;
- }
- if (!CheckLinearizedData(pHints)) {
- return PDFFORM_NOTAVAIL;
- }
- if (!m_objs_array.GetSize()) {
- m_objs_array.Add(pAcroForm->GetDict());
- }
- m_bLinearizedFormParamLoad = TRUE;
+int32_t CPDF_DataAvail::IsFormAvail(IFX_DownloadHints* pHints) {
+ if (!m_pDocument) {
+ return PDFFORM_AVAIL;
+ }
+ if (!m_bLinearizedFormParamLoad) {
+ CPDF_Dictionary* pRoot = m_pDocument->GetRoot();
+ if (!pRoot) {
+ return PDFFORM_AVAIL;
}
- CFX_PtrArray new_objs_array;
- FX_BOOL bRet = IsObjectsAvail(m_objs_array, FALSE, pHints, new_objs_array);
- m_objs_array.RemoveAll();
- if (!bRet) {
- m_objs_array.Append(new_objs_array);
- return PDFFORM_NOTAVAIL;
+ CPDF_Object* pAcroForm = pRoot->GetElement(FX_BSTRC("AcroForm"));
+ if (!pAcroForm) {
+ return PDFFORM_NOTEXIST;
}
- return PDFFORM_AVAIL;
-}
-void CPDF_SortObjNumArray::AddObjNum(FX_DWORD dwObjNum)
-{
- int32_t iNext = 0;
- if (BinarySearch(dwObjNum, iNext)) {
- return;
+ if (!CheckLinearizedData(pHints)) {
+ return PDFFORM_NOTAVAIL;
}
- m_number_array.InsertAt(iNext, dwObjNum);
+ if (!m_objs_array.GetSize()) {
+ m_objs_array.Add(pAcroForm->GetDict());
+ }
+ m_bLinearizedFormParamLoad = TRUE;
+ }
+ CFX_PtrArray new_objs_array;
+ FX_BOOL bRet = IsObjectsAvail(m_objs_array, FALSE, pHints, new_objs_array);
+ m_objs_array.RemoveAll();
+ if (!bRet) {
+ m_objs_array.Append(new_objs_array);
+ return PDFFORM_NOTAVAIL;
+ }
+ return PDFFORM_AVAIL;
}
-FX_BOOL CPDF_SortObjNumArray::Find(FX_DWORD dwObjNum)
-{
- int32_t iNext = 0;
- return BinarySearch(dwObjNum, iNext);
+void CPDF_SortObjNumArray::AddObjNum(FX_DWORD dwObjNum) {
+ int32_t iNext = 0;
+ if (BinarySearch(dwObjNum, iNext)) {
+ return;
+ }
+ m_number_array.InsertAt(iNext, dwObjNum);
}
-FX_BOOL CPDF_SortObjNumArray::BinarySearch(FX_DWORD value, int32_t &iNext)
-{
- int32_t iLow = 0;
- int32_t iHigh = m_number_array.GetSize() - 1;
- while (iLow <= iHigh) {
- int32_t iMid = (iLow + iHigh) / 2;
- if (m_number_array.GetAt(iMid) == value) {
- iNext = iMid;
- return TRUE;
- }
- if (m_number_array.GetAt(iMid) > value) {
- iHigh = iMid - 1;
- } else if (m_number_array.GetAt(iMid) < value) {
- iLow = iMid + 1;
- }
- }
- iNext = iLow;
- return FALSE;
+FX_BOOL CPDF_SortObjNumArray::Find(FX_DWORD dwObjNum) {
+ int32_t iNext = 0;
+ return BinarySearch(dwObjNum, iNext);
}
-CPDF_PageNode::~CPDF_PageNode()
-{
- int32_t iSize = m_childNode.GetSize();
- for (int32_t i = 0; i < iSize; ++i) {
- CPDF_PageNode* pNode = (CPDF_PageNode*)m_childNode[i];
- delete pNode;
- }
- m_childNode.RemoveAll();
+FX_BOOL CPDF_SortObjNumArray::BinarySearch(FX_DWORD value, int32_t& iNext) {
+ int32_t iLow = 0;
+ int32_t iHigh = m_number_array.GetSize() - 1;
+ while (iLow <= iHigh) {
+ int32_t iMid = (iLow + iHigh) / 2;
+ if (m_number_array.GetAt(iMid) == value) {
+ iNext = iMid;
+ return TRUE;
+ }
+ if (m_number_array.GetAt(iMid) > value) {
+ iHigh = iMid - 1;
+ } else if (m_number_array.GetAt(iMid) < value) {
+ iLow = iMid + 1;
+ }
+ }
+ iNext = iLow;
+ return FALSE;
+}
+CPDF_PageNode::~CPDF_PageNode() {
+ int32_t iSize = m_childNode.GetSize();
+ for (int32_t i = 0; i < iSize; ++i) {
+ CPDF_PageNode* pNode = (CPDF_PageNode*)m_childNode[i];
+ delete pNode;
+ }
+ m_childNode.RemoveAll();
}
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