From 4db62f5d942a3a7be00bfb5711836ce9e2c89f4b Mon Sep 17 00:00:00 2001 From: John Abd-El-Malek Date: Tue, 20 May 2014 14:34:30 -0700 Subject: Fixed or silenced all warnings and turned on warnings-as-errors. - Silence -Wheader-hygiene warning on Clang. Between fx_agg_driver.cpp and fxjs_v8.h there are hundreds or thousands of things that depend on "using namespace", so it is best to just suppress this warning than fix it. - gzguts.h: Include unistd.h on all non-Windows platforms, not just Apple platforms. Fixes implicit include warnings on Linux. - Added parens to silence a warning about mixing && and ||. - Removed a check if an enum is negative. Enums can be unsigned, generating an always-false warning. The check isn't necessary. - Removed some statements that are just names of variables that do nothing. BUG=375114 Patch by Matt Giuca --- .../src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp | 8756 ++++++++++---------- core/src/fxcodec/fx_zlib/zlib_v128/gzguts.h | 6 +- core/src/fxcodec/lcms2/lcms2-2.6/src/cmsplugin.c | 2 +- core/src/fxge/agg/agg23/fx_agg_driver.cpp | 2 - .../fxge/fx_freetype/fxft2.5.01/src/sfnt/ttload.c | 2 +- pdfium.gyp | 4 +- 6 files changed, 4383 insertions(+), 4389 deletions(-) diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp index b3e587a2a0..35b9726b4a 100644 --- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp +++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp @@ -1,4378 +1,4378 @@ -// Copyright 2014 PDFium Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. - -// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com - -#include "../../../include/fpdfapi/fpdf_parser.h" -#include "../../../include/fpdfapi/fpdf_module.h" -#include "../../../include/fpdfapi/fpdf_page.h" -#include "../fpdf_page/pageint.h" -#include -#define _PARSER_OBJECT_LEVLE_ 64 -extern const FX_LPCSTR _PDF_CharType; -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) { - return FALSE; - } - } - if (pType->GetString() == FX_BSTRC("Sig")) { - return TRUE; - } - return FALSE; -} -static FX_INT32 _CompareDWord(const void* p1, const void* p2) -{ - return (*(FX_DWORD*)p1) - (*(FX_DWORD*)p2); -} -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_bForceUseSecurityHandler = FALSE; -} -CPDF_Parser::~CPDF_Parser() -{ - CloseParser(FALSE); -} -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::CloseParser(FX_BOOL bReParse) -{ - m_bVersionUpdated = FALSE; - if (m_pDocument && !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 != NULL) { - m_Syntax.m_pFileAccess->Release(); - m_Syntax.m_pFileAccess = NULL; - } - FX_POSITION pos = m_ObjectStreamMap.GetStartPosition(); - while (pos) { - FX_LPVOID 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(); - FX_INT32 iLen = m_Trailers.GetSize(); - for (FX_INT32 i = 0; i < iLen; ++i) { - m_Trailers.GetAt(i)->Release(); - } - m_Trailers.RemoveAll(); - if (m_pLinearized) { - m_pLinearized->Release(); - m_pLinearized = NULL; - } -} -static FX_INT32 GetHeaderOffset(IFX_FileRead* pFile) -{ - FX_DWORD tag = FXDWORD_FROM_LSBFIRST(0x46445025); - FX_BYTE buf[4]; - FX_INT32 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(FX_LPCSTR 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(FX_LPCWSTR 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; - FX_INT32 offset = GetHeaderOffset(pFileAccess); - if (offset == -1) { - if (bOwnFileRead && pFileAccess) { - pFileAccess->Release(); - } - return PDFPARSE_ERROR_FORMAT; - } - m_Syntax.InitParser(pFileAccess, offset); - FX_BYTE ch; - m_Syntax.GetCharAt(5, ch); - m_FileVersion = (ch - '0') * 10; - m_Syntax.GetCharAt(7, ch); - m_FileVersion += ch - '0'; - m_Syntax.RestorePos(m_Syntax.m_FileLen - m_Syntax.m_HeaderOffset - 9); - if (!bReParse) { - m_pDocument = FX_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(); - FX_LPVOID 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; - } - 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; - } - 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 (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_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); - } - return PDFPARSE_ERROR_SUCCESS; -} -void CPDF_Parser::ReleaseEncryptHandler() -{ - if (m_Syntax.m_pCryptoHandler) { - delete m_Syntax.m_pCryptoHandler; - m_Syntax.m_pCryptoHandler = NULL; - } - if (m_pSecurityHandler && !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[(FX_INT32)m_CrossRef[objnum]]; - } - return 0; -} -static FX_INT32 GetDirectInteger(CPDF_Dictionary* pDict, FX_BSTR 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, FX_BSTR key, FX_INT32 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; - } - FX_INT32 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) { - pDict->Release(); - return FALSE; - } - xrefpos = newxrefpos; - XRefStreamList.InsertAt(0, pDict->GetInteger(FX_BSTRC("XRefStm"))); - m_Trailers.Add(pDict); - } - for (FX_INT32 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; - } - FX_INT32 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 (FX_INT32 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); - FX_LPVOID 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(); - FX_INT32 recordsize = 20; - char* pBuf = FX_Alloc(char, 1024 * recordsize + 1); - pBuf[1024 * recordsize] = '\0'; - FX_INT32 nBlocks = count / 1024 + 1; - for (FX_INT32 block = 0; block < nBlocks; block ++) { - FX_INT32 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((FX_LPBYTE)pBuf, dwReadSize)) { - FX_Free(pBuf); - return FALSE; - } - for (FX_INT32 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 { - FX_INT32 offset = FXSYS_atoi(pEntry); - if (offset == 0) { - for (FX_INT32 c = 0; c < 10; c ++) { - if (pEntry[c] < '0' || pEntry[c] > '9') { - FX_Free(pBuf); - return FALSE; - } - } - } - m_CrossRef.SetAtGrow(objnum, offset); - FX_INT32 version = FXSYS_atoi(pEntry + 11); - if (version >= 1) { - m_bVersionUpdated = TRUE; - } - m_ObjVersion.SetAtGrow(objnum, version); - if (m_CrossRef[objnum] < m_Syntax.m_FileLen) { - FX_LPVOID 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; - } - FX_LPVOID pResult = FXSYS_bsearch(&pos, m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize); - if (pResult == NULL) { - m_SortedOffset.Add(pos); - } - if (streampos) { - FX_LPVOID pResult = FXSYS_bsearch(&streampos, m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize); - if (pResult == NULL) { - m_SortedOffset.Add(streampos); - } - } - 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; - FX_INT32 recordsize = 20; - if (bFirst) { - bFirstItem = TRUE; - } - m_dwXrefStartObjNum = start_objnum; - if (!bSkip) { - char* pBuf = FX_Alloc(char, 1024 * recordsize + 1); - pBuf[1024 * recordsize] = '\0'; - FX_INT32 nBlocks = count / 1024 + 1; - FX_BOOL bFirstBlock = TRUE; - for (FX_INT32 block = 0; block < nBlocks; block ++) { - FX_INT32 block_size = block == nBlocks - 1 ? count % 1024 : 1024; - m_Syntax.ReadBlock((FX_LPBYTE)pBuf, block_size * recordsize); - for (FX_INT32 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); - FX_INT32 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 (FX_INT32 c = 0; c < 10; c ++) { - if (pEntry[c] < '0' || pEntry[c] > '9') { - FX_Free(pBuf); - return FALSE; - } - } - } - m_CrossRef.SetAtGrow(objnum, offset); - FX_INT32 version = FXSYS_atoi(pEntry + 11); - if (version >= 1) { - m_bVersionUpdated = TRUE; - } - m_ObjVersion.SetAtGrow(objnum, version); - if (m_CrossRef[objnum] < m_Syntax.m_FileLen) { - FX_LPVOID 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); - } - m_Syntax.RestorePos(SavedPos + count * recordsize); - } - if (streampos) - if (!LoadCrossRefV5(streampos, streampos, FALSE)) { - return FALSE; - } - 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; - } - 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; - } - FX_INT32 status = 0; - FX_INT32 inside_index = 0; - FX_DWORD objnum, gennum; - FX_INT32 depth = 0; - FX_LPBYTE buffer = FX_Alloc(FX_BYTE, 4096); - FX_FILESIZE pos = m_Syntax.m_HeaderOffset; - FX_FILESIZE start_pos, start_pos1; - FX_FILESIZE last_obj = -1, last_xref = -1, last_trailer = -1; - FX_BOOL bInUpdate = FALSE; - 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 ++) { - FX_BYTE byte = buffer[i]; - FX_LPBYTE pData = 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; - FX_LPVOID 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() > (FX_INT32)objnum && m_CrossRef[objnum]) { - if (pObject) { - FX_DWORD oldgen = m_ObjVersion.GetAt(objnum); - m_CrossRef[objnum] = obj_pos; - m_ObjVersion.SetAt(objnum, (FX_SHORT)gennum); - if (oldgen != gennum) { - m_bVersionUpdated = TRUE; - } - } - } else { - m_CrossRef.SetAtGrow(objnum, obj_pos); - m_V5Type.SetAtGrow(objnum, 1); - m_ObjVersion.SetAtGrow(objnum, (FX_SHORT)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(); - } - bInUpdate = TRUE; - } - } - } - --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; - FX_LPVOID 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(FX_LPCBYTE p, FX_INT32 n) -{ - FX_DWORD result = 0; - for (FX_INT32 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) { - m_pDocument->InsertIndirectObject(pStream->m_ObjNum, pStream); - } - if (pStream->GetType() != PDFOBJ_STREAM) { - return FALSE; - } - prev = pStream->GetDict()->GetInteger(FX_BSTRC("Prev")); - FX_INT32 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_memset32(m_V5Type.GetData(), 0, size); - } - } else { - m_Trailers.Add((CPDF_Dictionary*)pStream->GetDict()->Clone()); - } - CFX_DWordArray IndexArray, WidthArray; - FX_DWORD nSegs = 0; - CPDF_Array* pArray = pStream->GetDict()->GetArray(FX_BSTRC("Index")); - if (pArray == NULL) { - IndexArray.Add(0); - IndexArray.Add(size); - nSegs = 1; - } else { - for (FX_DWORD i = 0; i < pArray->GetCount(); i ++) { - IndexArray.Add(pArray->GetInteger(i)); - } - nSegs = pArray->GetCount() / 2; - } - pArray = pStream->GetDict()->GetArray(FX_BSTRC("W")); - if (pArray == NULL) { - pStream->Release(); - return FALSE; - } - FX_DWORD totalwidth = 0; - FX_DWORD i; - for (i = 0; i < pArray->GetCount(); i ++) { - WidthArray.Add(pArray->GetInteger(i)); - if (totalwidth + WidthArray[i] < totalwidth) { - pStream->Release(); - return FALSE; - } - totalwidth += WidthArray[i]; - } - if (totalwidth == 0 || WidthArray.GetSize() < 3) { - pStream->Release(); - return FALSE; - } - CPDF_StreamAcc acc; - acc.LoadAllData(pStream); - FX_LPCBYTE pData = acc.GetData(); - FX_DWORD dwTotalSize = acc.GetSize(); - FX_DWORD segindex = 0; - for (i = 0; i < nSegs; i ++) { - FX_INT32 startnum = IndexArray[i * 2]; - if (startnum < 0) { - continue; - } - m_dwXrefStartObjNum = startnum; - FX_DWORD count = IndexArray[i * 2 + 1]; - if (segindex + count < segindex || segindex + count == 0 || - (FX_DWORD)totalwidth >= UINT_MAX / (segindex + count) || (segindex + count) * (FX_DWORD)totalwidth > dwTotalSize) { - continue; - } - FX_LPCBYTE segstart = pData + segindex * (FX_DWORD)totalwidth; - if ((FX_DWORD)startnum + count < (FX_DWORD)startnum || - (FX_DWORD)startnum + count > (FX_DWORD)m_V5Type.GetSize()) { - continue; - } - for (FX_DWORD j = 0; j < count; j ++) { - FX_INT32 type = 1; - FX_LPCBYTE 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; - FX_LPVOID 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) { - FX_LPVOID 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->GetElement(FX_BSTRC("ID")); - 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_Reference* pRef = (CPDF_Reference*)m_pTrailer->GetElement(FX_BSTRC("Root")); - if (pRef == NULL || pRef->GetType() != PDFOBJ_REFERENCE) { - return 0; - } - return pRef->GetRefObjNum(); -} -FX_DWORD CPDF_Parser::GetInfoObjNum() -{ - CPDF_Reference* pRef = (CPDF_Reference*)m_pTrailer->GetElement(FX_BSTRC("Info")); - if (pRef == NULL || pRef->GetType() != PDFOBJ_REFERENCE) { - return 0; - } - return 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]; - FX_LPVOID 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; -} -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; - } - FX_INT32 n = pObjStream->GetDict()->GetInteger(FX_BSTRC("N")); - FX_INT32 offset = pObjStream->GetDict()->GetInteger(FX_BSTRC("First")); - CPDF_SyntaxParser syntax; - CFX_SmartPointer file(FX_CreateMemoryStream((FX_LPBYTE)pObjStream->GetData(), (size_t)pObjStream->GetSize(), FALSE)); - syntax.InitParser((IFX_FileStream*)file, 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, 0, pContext); - break; - } - n --; - } - return pRet; - } - return NULL; -} -CPDF_StreamAcc* CPDF_Parser::GetObjectStream(FX_DWORD objnum) -{ - CPDF_StreamAcc* pStreamAcc = NULL; - if (m_ObjectStreamMap.Lookup((void*)(FX_UINTPTR)objnum, (void*&)pStreamAcc)) { - return pStreamAcc; - } - const CPDF_Stream* pStream = (CPDF_Stream*)m_pDocument->GetIndirectObject(objnum); - if (pStream == NULL || pStream->GetType() != PDFOBJ_STREAM) { - return NULL; - } - pStreamAcc = FX_NEW CPDF_StreamAcc; - pStreamAcc->LoadAllData(pStream); - m_ObjectStreamMap.SetAt((void*)(FX_UINTPTR)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; - } - FX_LPVOID pResult = FXSYS_bsearch(&offset, m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize); - if (pResult == NULL) { - return 0; - } - if ((FX_FILESIZE*)pResult - (FX_FILESIZE*)m_SortedOffset.GetData() == m_SortedOffset.GetSize() - 1) { - return 0; - } - return ((FX_FILESIZE*)pResult)[1] - offset; - } - return 0; -} -void CPDF_Parser::GetIndirectBinary(FX_DWORD objnum, FX_LPBYTE& 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; - } - FX_INT32 n = pObjStream->GetDict()->GetInteger(FX_BSTRC("N")); - FX_INT32 offset = pObjStream->GetDict()->GetInteger(FX_BSTRC("First")); - CPDF_SyntaxParser syntax; - FX_LPCBYTE pData = pObjStream->GetData(); - FX_DWORD totalsize = pObjStream->GetSize(); - CFX_SmartPointer file(FX_CreateMemoryStream((FX_LPBYTE)pData, (size_t)totalsize, FALSE)); - syntax.InitParser((IFX_FileStream*)file, 0); - while (n) { - FX_DWORD thisnum = syntax.GetDirectNum(); - FX_DWORD thisoff = syntax.GetDirectNum(); - if (thisnum == objnum) { - if (n == 1) { - size = totalsize - (thisoff + offset); - } else { - FX_DWORD nextnum = syntax.GetDirectNum(); - FX_DWORD nextoff = syntax.GetDirectNum(); - size = nextoff - thisoff; - } - pBuffer = FX_Alloc(FX_BYTE, size); - FXSYS_memcpy32(pBuffer, pData + thisoff + offset, size); - return; - } - n --; - } - return; - } - 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 real_objnum = FXSYS_atoi(word); - if (real_objnum && real_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; - } - FX_LPVOID 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; - } - } - } - 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(); - } - size = (FX_DWORD)(nextoff - pos); - pBuffer = FX_Alloc(FX_BYTE, size); - m_Syntax.RestorePos(pos); - m_Syntax.ReadBlock(pBuffer, size); - m_Syntax.RestorePos(SavedPos); - } -} -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 real_objnum = FXSYS_atoi(word); - if (objnum && real_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.GetObject(pObjList, objnum, gennum, 0, pContext); - FX_FILESIZE endOffset = m_Syntax.SavePos(); - CFX_ByteString bsWord = m_Syntax.GetKeyword(); - if (bsWord == FX_BSTRC("endobj")) { - endOffset = m_Syntax.SavePos(); - } - FX_DWORD objSize = endOffset - objOffset; - m_Syntax.RestorePos(SavedPos); - if (pObj && !objnum) { - pObj->m_ObjNum = real_objnum; - } - 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 real_objnum = FXSYS_atoi(word); - if (objnum && real_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, 0, pContext); - if (pResultPos) { - *pResultPos = m_Syntax.m_Pos; - } - m_Syntax.RestorePos(SavedPos); - return pObj; -} -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 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(); -} -void CPDF_Parser::SetSecurityHandler(CPDF_SecurityHandler* pSecurityHandler, FX_BOOL bForced) -{ - ASSERT(m_pSecurityHandler == NULL); - if (m_pSecurityHandler && !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()->GetElement(FX_BSTRC("Linearized"))) { - m_Syntax.GetNextWord(bIsNumber); - CPDF_Object *pLen = m_pLinearized->GetDict()->GetElement(FX_BSTRC("L")); - if (!pLen) { - m_pLinearized->Release(); - 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 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; - FX_INT32 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 = FX_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; - } - FX_INT32 xrefsize = GetDirectInteger(m_pTrailer, FX_BSTRC("Size")); - if (xrefsize == 0) { - return FALSE; - } - 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; - } - 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; - } - } - 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; - } - 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_BOOL CPDF_Parser::LoadLinearizedAllCrossRefV5(FX_FILESIZE xrefpos) -{ - if (!LoadCrossRefV5(xrefpos, xrefpos, FALSE)) { - return FALSE; - } - while (xrefpos) - if (!LoadCrossRefV5(xrefpos, xrefpos, FALSE)) { - return FALSE; - } - 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); - FX_FILESIZE dwSavedPos = m_Syntax.SavePos(); - FX_BYTE ch = 0; - FX_DWORD dwCount = 0; - m_Syntax.GetNextChar(ch); - FX_INT32 type = _PDF_CharType[ch]; - while (type == 'W') { - ++dwCount; - if (m_Syntax.m_FileLen >= (FX_FILESIZE)(m_Syntax.SavePos() + m_Syntax.m_HeaderOffset)) { - break; - } - m_Syntax.GetNextChar(ch); - type = _PDF_CharType[ch]; - } - m_LastXRefOffset += dwCount; - FX_POSITION pos = m_ObjectStreamMap.GetStartPosition(); - while (pos) { - FX_LPVOID 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_DWORD), _CompareDWord); - m_Syntax.m_MetadataObjnum = dwSaveMetadataObjnum; - return PDFPARSE_ERROR_SUCCESS; -} -CPDF_SyntaxParser::CPDF_SyntaxParser() -{ - m_pFileAccess = NULL; - m_pCryptoHandler = NULL; - m_pFileBuf = NULL; - m_BufSize = CPDF_ModuleMgr::Get()->m_FileBufSize; - m_pFileBuf = NULL; - m_MetadataObjnum = 0; - m_dwWordPos = 0; -#if defined(_FPDFAPI_MINI_) - m_bFileStream = TRUE; -#else - m_bFileStream = FALSE; -#endif -} -CPDF_SyntaxParser::~CPDF_SyntaxParser() -{ - if (m_pFileBuf) { - FX_Free(m_pFileBuf); - } -} -FX_BOOL CPDF_SyntaxParser::GetCharAt(FX_FILESIZE pos, FX_BYTE& 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(FX_BYTE& 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, FX_BYTE& 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(FX_LPBYTE pBuf, FX_DWORD size) -{ - if (!m_pFileAccess->ReadBlock(pBuf, m_Pos + m_HeaderOffset, size)) { - return FALSE; - } - m_Pos += size; - return TRUE; -} -#define MAX_WORD_BUFFER 256 -void CPDF_SyntaxParser::GetNextWord() -{ - m_WordSize = 0; - m_bIsNumber = TRUE; - FX_BYTE ch; - if (!GetNextChar(ch)) { - return; - } - FX_BYTE 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 (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; - } else { - m_Pos --; - } - } - 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() -{ - FX_BYTE ch; - if (!GetNextChar(ch)) { - return CFX_ByteString(); - } - CFX_ByteTextBuf buf; - FX_INT32 parlevel = 0; - FX_INT32 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; - } - } - GetNextChar(ch); - return buf.GetByteString(); -} -CFX_ByteString CPDF_SyntaxParser::ReadHexString() -{ - FX_BYTE ch; - if (!GetNextChar(ch)) { - return CFX_ByteString(); - } - CFX_BinaryBuf buf; - FX_BOOL bFirst = TRUE; - FX_BYTE code = 0; - while (1) { - if (ch == '>') { - break; - } - if (ch >= '0' && ch <= '9') { - if (bFirst) { - code = (ch - '0') * 16; - } else { - code += ch - '0'; - buf.AppendByte((FX_BYTE)code); - } - bFirst = !bFirst; - } else if (ch >= 'A' && ch <= 'F') { - if (bFirst) { - code = (ch - 'A' + 10) * 16; - } else { - code += ch - 'A' + 10; - buf.AppendByte((FX_BYTE)code); - } - bFirst = !bFirst; - } else if (ch >= 'a' && ch <= 'f') { - if (bFirst) { - code = (ch - 'a' + 10) * 16; - } else { - code += ch - 'a' + 10; - buf.AppendByte((FX_BYTE)code); - } - bFirst = !bFirst; - } - if (!GetNextChar(ch)) { - break; - } - } - if (!bFirst) { - buf.AppendByte((FX_BYTE)code); - } - return buf.GetByteString(); -} -void CPDF_SyntaxParser::ToNextLine() -{ - FX_BYTE ch; - while (1) { - if (!GetNextChar(ch)) { - return; - } - if (ch == '\n') { - return; - } - if (ch == '\r') { - GetNextChar(ch); - if (ch == '\n') { - return; - } else { - m_Pos --; - return; - } - } - } -} -void CPDF_SyntaxParser::ToNextWord() -{ - FX_BYTE ch; - if (!GetNextChar(ch)) { - return; - } - FX_BYTE 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((FX_LPCSTR)m_WordBuffer, m_WordSize); -} -CFX_ByteString CPDF_SyntaxParser::GetKeyword() -{ - GetNextWord(); - return CFX_ByteString((FX_LPCSTR)m_WordBuffer, m_WordSize); -} -CPDF_Object* CPDF_SyntaxParser::GetObject(CPDF_IndirectObjects* pObjList, FX_DWORD objnum, FX_DWORD gennum, FX_INT32 level, PARSE_CONTEXT* pContext, FX_BOOL bDecrypt) -{ - if (level > _PARSER_OBJECT_LEVLE_) { - return NULL; - } - FX_FILESIZE SavedPos = m_Pos; - FX_BOOL bTypeOnly = pContext && (pContext->m_Flags & PDFPARSE_TYPEONLY); - FX_BOOL bIsNumber; - CFX_ByteString word = GetNextWord(bIsNumber); - CPDF_Object* pRet = NULL; - if (word.GetLength() == 0) { - if (bTypeOnly) { - return (CPDF_Object*)PDFOBJ_INVALID; - } - return NULL; - } - FX_FILESIZE wordOffset = m_Pos - word.GetLength(); - 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; - } - pRet = CPDF_Reference::Create(pObjList, objnum); - return pRet; - } else { - m_Pos = SavedPos; - if (bTypeOnly) { - return (CPDF_Object*)PDFOBJ_NUMBER; - } - pRet = CPDF_Number::Create(word); - return pRet; - } - } else { - m_Pos = SavedPos; - if (bTypeOnly) { - return (CPDF_Object*)PDFOBJ_NUMBER; - } - pRet = CPDF_Number::Create(word); - return pRet; - } - } - if (word == FX_BSTRC("true") || word == FX_BSTRC("false")) { - if (bTypeOnly) { - return (CPDF_Object*)PDFOBJ_BOOLEAN; - } - pRet = CPDF_Boolean::Create(word == FX_BSTRC("true")); - return pRet; - } - if (word == FX_BSTRC("null")) { - if (bTypeOnly) { - return (CPDF_Object*)PDFOBJ_NULL; - } - pRet = CPDF_Null::Create(); - return pRet; - } - if (word == FX_BSTRC("(")) { - if (bTypeOnly) { - return (CPDF_Object*)PDFOBJ_STRING; - } - FX_FILESIZE SavedPos = m_Pos - 1; - CFX_ByteString str = ReadString(); - if (m_pCryptoHandler && bDecrypt) { - m_pCryptoHandler->Decrypt(objnum, gennum, str); - } - pRet = CPDF_String::Create(str, FALSE); - return pRet; - } - if (word == FX_BSTRC("<")) { - if (bTypeOnly) { - return (CPDF_Object*)PDFOBJ_STRING; - } - FX_FILESIZE SavedPos = m_Pos - 1; - CFX_ByteString str = ReadHexString(); - if (m_pCryptoHandler && bDecrypt) { - m_pCryptoHandler->Decrypt(objnum, gennum, str); - } - pRet = CPDF_String::Create(str, TRUE); - return pRet; - } - if (word == FX_BSTRC("[")) { - if (bTypeOnly) { - return (CPDF_Object*)PDFOBJ_ARRAY; - } - CPDF_Array* pArray = CPDF_Array::Create(); - FX_FILESIZE firstPos = m_Pos - 1; - while (1) { - FX_FILESIZE SavedPos = m_Pos; - CPDF_Object* pObj = GetObject(pObjList, objnum, gennum, level + 1); - if (pObj == NULL) { - return pArray; - } - pArray->Add(pObj); - } - } - if (word[0] == '/') { - if (bTypeOnly) { - return (CPDF_Object*)PDFOBJ_NAME; - } - pRet = CPDF_Name::Create(PDF_NameDecode(CFX_ByteStringC(m_WordBuffer + 1, m_WordSize - 1))); - return pRet; - } - if (word == FX_BSTRC("<<")) { - FX_FILESIZE saveDictOffset = m_Pos - 2; - FX_DWORD dwDictSize = 0; - if (bTypeOnly) { - return (CPDF_Object*)PDFOBJ_DICTIONARY; - } - if (pContext) { - pContext->m_DictStart = SavedPos; - } - CPDF_Dictionary* pDict = CPDF_Dictionary::Create(); - FX_INT32 nKeys = 0; - FX_FILESIZE dwSignValuePos = 0; - while (1) { - FX_BOOL bIsNumber; - CFX_ByteString key = GetNextWord(bIsNumber); - if (key.IsEmpty()) { - pDict->Release(); - return NULL; - } - FX_FILESIZE SavedPos = m_Pos - key.GetLength(); - if (key == FX_BSTRC(">>")) { - dwDictSize = m_Pos - saveDictOffset; - break; - } - if (key == FX_BSTRC("endobj")) { - dwDictSize = m_Pos - 6 - saveDictOffset; - 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, level + 1); - if (pObj == NULL) { - continue; - } - if (key.GetLength() == 1) { - pDict->SetAt(CFX_ByteStringC(((FX_LPCSTR)key) + 1, key.GetLength() - 1), pObj); - } else { - if (nKeys < 32) { - pDict->SetAt(CFX_ByteStringC(((FX_LPCSTR)key) + 1, key.GetLength() - 1), pObj); - } else { - pDict->AddValue(CFX_ByteStringC(((FX_LPCSTR)key) + 1, key.GetLength() - 1), pObj); - } - } - } - if (IsSignatureDict(pDict)) { - FX_FILESIZE dwSavePos = m_Pos; - m_Pos = dwSignValuePos; - CPDF_Object* pObj = GetObject(pObjList, objnum, gennum, level + 1, 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; - } - 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, - FX_INT32 level, struct PARSE_CONTEXT* pContext) -{ - if (level > _PARSER_OBJECT_LEVLE_) { - 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 CPDF_Reference::Create(pObjList, objnum); - } else { - m_Pos = SavedPos; - if (bTypeOnly) { - return (CPDF_Object*)PDFOBJ_NUMBER; - } - return CPDF_Number::Create(word); - } - } else { - 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, level + 1); - if (pObj == NULL) { - if (m_WordBuffer[0] == ']') { - return 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()) { - 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, level + 1); - if (pObj == NULL) { - pDict->Release(); - FX_BYTE ch; - while (1) { - if (!GetNextChar(ch)) { - break; - } - if (ch == 0x0A || ch == 0x0D) { - break; - } - } - return NULL; - } - if (key.GetLength() == 1) { - pDict->SetAt(CFX_ByteStringC(((FX_LPCSTR)key) + 1, key.GetLength() - 1), pObj); - } else { - pDict->AddValue(CFX_ByteStringC(((FX_LPCSTR)key) + 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; - } - 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_DWORD len = 0; - if (pLenObj && (pLenObj->GetType() != PDFOBJ_REFERENCE || - (((CPDF_Reference*)pLenObj)->GetObjList() != NULL) && - ((CPDF_Reference*)pLenObj)->GetRefObjNum() != objnum)) { - FX_FILESIZE pos = m_Pos; - if (pLenObj) { - len = pLenObj->GetInteger(); - } - m_Pos = pos; - if (len > 0x40000000) { - return NULL; - } - } - ToNextLine(); - FX_FILESIZE StreamStartPos = m_Pos; - if (pContext) { - pContext->m_DataStart = m_Pos; - } - m_Pos += len; - CPDF_CryptoHandler* pCryptoHandler = objnum == (FX_DWORD)m_MetadataObjnum ? NULL : m_pCryptoHandler; - if (pCryptoHandler == NULL) { - FX_FILESIZE SavedPos = m_Pos; - GetNextWord(); - if (m_WordSize < 9 || FXSYS_memcmp32(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; - } - FX_BYTE 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; -#if defined(_FPDFAPI_MINI_) && !defined(_FXCORE_FEATURE_ALL_) - pStream = FX_NEW CPDF_Stream(m_pFileAccess, pCryptoHandler, m_HeaderOffset + m_Pos, len, pDict, gennum); - m_Pos += len; -#else - FX_LPBYTE pData = FX_Alloc(FX_BYTE, len); - if (!pData) { - return NULL; - } - ReadBlock(pData, len); - if (pCryptoHandler) { - CFX_BinaryBuf dest_buf; - dest_buf.EstimateSize(pCryptoHandler->DecryptGetSize(len)); - FX_LPVOID 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 = FX_NEW CPDF_Stream(pData, len, pDict); -#endif - if (pContext) { - pContext->m_DataEnd = pContext->m_DataStart + len; - } - StreamStartPos = m_Pos; - GetNextWord(); - if (m_WordSize == 6 && 0 == FXSYS_memcmp32(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(FX_BYTE, 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_INT32 CPDF_SyntaxParser::GetDirectNum() -{ - GetNextWord(); - if (!m_bIsNumber) { - return 0; - } - m_WordBuffer[m_WordSize] = 0; - return FXSYS_atoi((FX_LPCSTR)m_WordBuffer); -} -FX_BOOL CPDF_SyntaxParser::IsWholeWord(FX_FILESIZE startpos, FX_FILESIZE limit, FX_LPCBYTE tag, FX_DWORD taglen) -{ - FX_BYTE 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'; - FX_BYTE ch; - if (bCheckRight && startpos + (FX_INT32)taglen <= limit && GetCharAt(startpos + (FX_INT32)taglen, ch)) { - FX_BYTE type = _PDF_CharType[ch]; - if (type == 'N' || type == 'R') { - return FALSE; - } - } - if (bCheckLeft && startpos > 0 && GetCharAt(startpos - 1, ch)) { - FX_BYTE type = _PDF_CharType[ch]; - if (type == 'N' || type == 'R') { - return FALSE; - } - } - return TRUE; -} -FX_BOOL CPDF_SyntaxParser::SearchWord(FX_BSTR tag, FX_BOOL bWholeWord, FX_BOOL bForward, FX_FILESIZE limit) -{ - FX_INT32 taglen = tag.GetLength(); - if (taglen == 0) { - return FALSE; - } - FX_FILESIZE pos = m_Pos; - FX_INT32 offset = 0; - if (!bForward) { - offset = taglen - 1; - } - FX_LPCBYTE tag_data = tag; - FX_BYTE 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, 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 { - FX_LPCBYTE m_pTag; - FX_DWORD m_Len; - FX_DWORD m_Offset; -}; -FX_INT32 CPDF_SyntaxParser::SearchMultiWord(FX_BSTR tags, FX_BOOL bWholeWord, FX_FILESIZE limit) -{ - FX_INT32 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; - FX_BYTE byte; - GetCharAt(pos++, byte); - FX_INT32 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(FX_BSTR tag, FX_FILESIZE limit) -{ - FX_INT32 taglen = tag.GetLength(); - FX_INT32 match = 0; - limit += m_Pos; - FX_FILESIZE startpos = m_Pos; - while (1) { - FX_BYTE 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(FX_BYTE* buffer, FX_DWORD size) -{ - FX_DWORD offset = 0; - FX_BYTE ch; - while (1) { - if (!GetNextChar(ch)) { - return; - } - buffer[offset++] = ch; - if (offset == size) { - break; - } - } -} -CPDF_DataAvail::CPDF_DataAvail(IFX_FileAvail* pFileAvail, IFX_FileRead* pFileRead) -{ - m_pFileAvail = pFileAvail; - m_pFileRead = 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_bMainXRefLoad = 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(); - } - if (m_pageMapCheckState) { - delete m_pageMapCheckState; - } - if (m_pagesLoadState) { - delete m_pagesLoadState; - } - FX_INT32 i = 0; - FX_INT32 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; -} -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; - } - FX_LPVOID 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; -} -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; - FX_INT32 i = 0; - for (i = 0; i < obj_array.GetSize(); i++) { - CPDF_Object *pObj = (CPDF_Object *)obj_array[i]; - if (!pObj) { - continue; - } - FX_INT32 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->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 size = GetObjectSize(pRef->GetRefObjNum(), offset); - if (!size) { - break; - } - size = (FX_DWORD)((FX_FILESIZE)(offset + size + 512) > m_dwFileLen ? m_dwFileLen - offset : size + 512); - if (!m_pFileAvail->IsDataAvail(offset, size)) { - pHints->AddSegment(offset, size); - 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) { - FX_INT32 iSize = new_obj_array.GetSize(); - for (i = 0; i < iSize; ++i) { - CPDF_Object *pObj = (CPDF_Object *)new_obj_array[i]; - FX_INT32 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); -} -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; - } else { - CFX_PtrArray new_objs_array; - FX_BOOL bRet = IsObjectsAvail(m_objs_array, FALSE, pHints, new_objs_array); - if (bRet) { - FX_INT32 iSize = m_arrayAcroforms.GetSize(); - for (FX_INT32 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); - } - 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; - } - m_arrayAcroforms.Add(m_pAcroForm); - 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); - } else { - return LoadDocPages(pHints); - } - case PDF_DATAAVAIL_PAGE: - if (m_bTotalLoadPageTree) { - return CheckPage(pHints); - } else { - 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::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::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::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; - if (pExistInFile) { - *pExistInFile = TRUE; - } - if (m_pDocument == NULL) { - FX_FILESIZE offset = m_parser.GetObjectOffset(objnum); - if (offset < 0) { - *pExistInFile = FALSE; - return NULL; - } - FX_DWORD size = (FX_DWORD)m_parser.GetObjectSize(objnum); - size = (FX_DWORD)(((FX_FILESIZE)(offset + size + 512)) > m_dwFileLen ? m_dwFileLen - offset : size + 512); - if (!m_pFileAvail->IsDataAvail(offset, size)) { - pHints->AddSegment(offset, size); - return NULL; - } - pRet = m_parser.ParseIndirectObject(NULL, objnum); - if (!pRet && pExistInFile) { - *pExistInFile = FALSE; - } - return pRet; - } - FX_FILESIZE offset; - FX_DWORD size = GetObjectSize(objnum, offset); - size = (FX_DWORD)((FX_FILESIZE)(offset + size + 512) > m_dwFileLen ? m_dwFileLen - offset : size + 512); - if (!m_pFileAvail->IsDataAvail(offset, size)) { - pHints->AddSegment(offset, size); - return NULL; - } - CPDF_Parser *pParser = (CPDF_Parser *)(m_pDocument->GetParser()); - pRet = pParser->ParseIndirectObject(NULL, objnum, NULL); - if (!pRet && pExistInFile) { - *pExistInFile = FALSE; - } - 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; - } - 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_Reference* pRef = (CPDF_Reference*)m_pRoot->GetDict()->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 = (CPDF_Reference*)pRoot->GetElement(FX_BSTRC("Pages")); - 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 = FX_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 = FX_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 i = 0; - FX_DWORD iLen = m_PageObjList.GetSize(); - CFX_DWordArray UnavailObjList; - for (; i < iLen; ++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) { - FX_INT32 iSize = pArray->GetCount(); - CPDF_Object *pItem = NULL; - for (FX_INT32 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; - } - i = 0; - iLen = m_PagesArray.GetSize(); - for (; i < iLen; ++i) { - CPDF_Object *pPages = (CPDF_Object *)m_PagesArray.GetAt(i); - if (!pPages) { - continue; - } - if (!GetPageKids(m_pCurrentParser, pPages)) { - pPages->Release(); - while (i++ < iLen) { - 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 TRUE; - } - return TRUE; -} -FX_BOOL CPDF_DataAvail::GetPageKids(CPDF_Parser *pParser, CPDF_Object *pPages) -{ - if (!pParser) { - m_docStatus = PDF_DATAAVAIL_ERROR; - return FALSE; - } - CPDF_Object *pKids = pPages->GetDict()->GetElement(FX_BSTRC("Kids")); - 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_Reference *pKid = (CPDF_Reference *)pKidsArray->GetElement(i); - m_PageObjList.Add(pKid->GetRefObjNum()); - } - } - break; - default: - m_docStatus = PDF_DATAAVAIL_ERROR; - return FALSE; - } - 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; - } - return FALSE; - } - FX_BOOL bNeedLoad = FALSE; - if (!GetPageKids(m_pCurrentParser, pPages)) { - pPages->Release(); - m_docStatus = PDF_DATAAVAIL_ERROR; - return FALSE; - } - pPages->Release(); - m_docStatus = PDF_DATAAVAIL_PAGE; - 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)) { - FX_BYTE 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); - return FALSE; -} -FX_BOOL CPDF_DataAvail::CheckFirstPage(IFX_DownloadHints *pHints) -{ - FX_DWORD dwFirstPageEndOffset = 0; - CPDF_Object *pEndOffSet = m_pLinearized->GetDict()->GetElement(FX_BSTRC("E")); - if (!pEndOffSet) { - m_docStatus = PDF_DATAAVAIL_ERROR; - return FALSE; - } - CPDF_Object *pXRefOffset = m_pLinearized->GetDict()->GetElement(FX_BSTRC("T")); - if (!pXRefOffset) { - m_docStatus = PDF_DATAAVAIL_ERROR; - return FALSE; - } - CPDF_Object *pFileLen = m_pLinearized->GetDict()->GetElement(FX_BSTRC("L")); - 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; - } - FX_INT32 iStartPos = (FX_INT32)(m_dwFileLen > 1024 ? 1024 : m_dwFileLen); - FX_INT32 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; -} -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 real_objnum = FXSYS_atoi(word); - if (objnum && real_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; -} -FX_INT32 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_BYTE 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(FX_LPBYTE pData, FX_DWORD dwLen) -{ - CFX_SmartPointer file(FX_CreateMemoryStream(pData, (size_t)dwLen, FALSE)); - FX_INT32 offset = GetHeaderOffset((IFX_FileStream*)file); - if (offset == -1) { - m_docStatus = PDF_DATAAVAIL_ERROR; - return FALSE; - } - m_dwHeaderOffset = offset; - m_syntaxParser.InitParser((IFX_FileStream*)file, offset); - m_syntaxParser.RestorePos(m_syntaxParser.m_HeaderOffset + 9); - FX_BOOL bNumber = FALSE; - FX_FILESIZE dwSavePos = m_syntaxParser.SavePos(); - 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()->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; -} -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)) { - FX_BYTE buffer[1024]; - m_pFileRead->ReadBlock(buffer, req_pos, dwSize); - CFX_SmartPointer file(FX_CreateMemoryStream(buffer, (size_t)dwSize, FALSE)); - m_syntaxParser.InitParser((IFX_FileStream*)file, 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; - } else { - m_docStatus = PDF_DATAAVAIL_LOADALLFILE; - return TRUE; - } - } - pHints->AddSegment(req_pos, dwSize); - return FALSE; -} -FX_DWORD 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)) { - FX_INT32 iSize = (FX_INT32)(m_Pos + req_size - m_dwCurrentXRefSteam); - CFX_BinaryBuf buf(iSize); - FX_LPBYTE pBuf = buf.GetBuffer(); - m_pFileRead->ReadBlock(pBuf, m_dwCurrentXRefSteam, iSize); - CFX_SmartPointer file(FX_CreateMemoryStream(pBuf, (size_t)iSize, FALSE)); - m_parser.m_Syntax.InitParser((IFX_FileStream*)file, 0); - FX_BOOL bNumber = FALSE; - FX_FILESIZE dwSavePos = m_parser.m_Syntax.SavePos(); - 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_Object *pName = pObj->GetDict()->GetElement(FX_BSTRC("Type")); - 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; - } else { - pObj->Release(); - return -1; - } - } - pObj->Release(); - return -1; - } - pHints->AddSegment(m_Pos, req_size); - return 0; -} -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; - FX_BYTE ch; - if (!GetNextChar(ch)) { - return FALSE; - } - FX_BYTE 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; - } - } - CFX_ByteString ret(m_WordBuffer, m_WordSize); - token = ret; - return TRUE; -} -FX_BOOL CPDF_DataAvail::GetNextChar(FX_BYTE &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) -{ - FX_INT32 iSize = 0; - CFX_ByteString token; - while (1) { - if (!GetNextToken(token)) { - iSize = (FX_INT32)(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; - FX_DWORD dwRet = CheckCrossRefStream(pHints, xref_offset); - if (dwRet == 1) { - if (!xref_offset) { - m_docStatus = PDF_DATAAVAIL_LOADALLCRSOSSREF; - } else { - m_dwCurrentXRefSteam = xref_offset; - m_Pos = xref_offset; - } - return TRUE; - } else if (dwRet == -1) { - m_docStatus = PDF_DATAAVAIL_ERROR; - } - return FALSE; -} -FX_BOOL CPDF_DataAvail::CheckCrossRef(IFX_DownloadHints* pHints) -{ - FX_FILESIZE dwSavePos = m_Pos; - FX_INT32 iSize = 0; - CFX_ByteString token; - if (!GetNextToken(token)) { - iSize = (FX_INT32)(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 = (FX_INT32)(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_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(); - FX_INT32 iSize = (FX_INT32)(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::CheckTrailer(IFX_DownloadHints* pHints) -{ - FX_INT32 iTrailerSize = (FX_INT32)(m_Pos + 512 > m_dwFileLen ? m_dwFileLen - m_Pos : 512); - if (m_pFileAvail->IsDataAvail(m_Pos, iTrailerSize)) { - FX_INT32 iSize = (FX_INT32)(m_Pos + iTrailerSize - m_dwTrailerOffset); - CFX_BinaryBuf buf(iSize); - FX_LPBYTE pBuf = buf.GetBuffer(); - if (!pBuf) { - m_docStatus = PDF_DATAAVAIL_ERROR; - return FALSE; - } - if (!m_pFileRead->ReadBlock(pBuf, m_dwTrailerOffset, iSize)) { - return FALSE; - } - CFX_SmartPointer file(FX_CreateMemoryStream(pBuf, (size_t)iSize, FALSE)); - m_syntaxParser.InitParser((IFX_FileStream*)file, 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; - } - 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; - } else { - m_dwPrevXRefOffset = 0; - m_docStatus = PDF_DATAAVAIL_TRAILER_APPEND; - pTrailer->Release(); - } - return TRUE; - } - pHints->AddSegment(m_Pos, iTrailerSize); - return FALSE; -} -FX_BOOL CPDF_DataAvail::CheckPage(FX_INT32 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_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 = FX_NEW CPDF_PageNode(); - pPageNode->m_childNode.Add(pNode); - pNode->m_dwPageNo = ((CPDF_Reference*)pKid)->GetRefObjNum(); - } - pPages->Release(); - 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; - } - if (!pPage) { - if (m_docStatus == PDF_DATAAVAIL_ERROR) { - m_docStatus = PDF_DATAAVAIL_ERROR; - return FALSE; - } - 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; - CFX_ByteString type = pPage->GetDict()->GetString(FX_BSTRC("Type")); - if (type == FX_BSTRC("Pages")) { - pPageNode->m_type = PDF_PAGENODE_PAGES; - CPDF_Object *pKids = pPage->GetDict()->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 = FX_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 = FX_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::CheckPageNode(CPDF_PageNode &pageNodes, FX_INT32 iPage, FX_INT32 &iCount, IFX_DownloadHints* pHints) -{ - FX_INT32 iSize = pageNodes.m_childNode.GetSize(); - if (!iSize) { - m_docStatus = PDF_DATAAVAIL_ERROR; - return FALSE; - } - for (FX_INT32 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(FX_INT32 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_docStatus = PDF_DATAAVAIL_ERROR; - return TRUE; - } - FX_INT32 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::LoadDocPages(IFX_DownloadHints* pHints) -{ - if (!CheckUnkownPageNode(m_PagesObjNum, &m_pageNodes, pHints)) { - return FALSE; - } - if (CheckPageCount(pHints)) { - m_docStatus = PDF_DATAAVAIL_PAGE; - return TRUE; - } else { - 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_pFileAvail->IsDataAvail(m_dwLastXRefOffset, (FX_DWORD)(m_dwFileLen - m_dwLastXRefOffset))) { - pHints->AddSegment(m_dwLastXRefOffset, (FX_DWORD)(m_dwFileLen - m_dwLastXRefOffset)); - return FALSE; - } - FX_DWORD dwRet = 0; - if (!m_bMainXRefLoad) { - dwRet = ((CPDF_Parser *)m_pDocument->GetParser())->LoadLinearizedMainXRefTable(); - if (dwRet == PDFPARSE_ERROR_SUCCESS) { - if (!PreparePageItem()) { - return FALSE; - } - m_bMainXRefLoadedOK = TRUE; - } - m_bMainXRefLoad = TRUE; - } - m_bLinearedDataOK = TRUE; - return TRUE; -} -FX_BOOL CPDF_DataAvail::CheckPageAnnots(FX_INT32 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; - } 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_objs_array.Append(new_objs_array); - } - return bRet; - } -} -FX_BOOL CPDF_DataAvail::CheckLinearizedFirstPage(FX_INT32 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) -{ - CPDF_Object *pParent = pDict->GetElement("Parent"); - if (!pParent) { - return FALSE; - } - CPDF_Dictionary *pParentDict = pParent->GetDict(); - if (!pParentDict) { - return FALSE; - } - CPDF_Object *pRet = pParentDict->GetElement("Resource"); - if (pRet) { - m_pPageResource = pRet; - return TRUE; - } else { - return HaveResourceAncestor(pParentDict); - } -} -FX_BOOL CPDF_DataAvail::IsPageAvail(FX_INT32 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 = FX_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; - } - 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; - } - } 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; - } - } - if (m_pPageDict && !m_bNeedDownLoadResource) { - CPDF_Object *pRes = m_pPageDict->GetElement("Resource"); - if (!pRes) { - m_bNeedDownLoadResource = HaveResourceAncestor(m_pPageDict); - } - m_bNeedDownLoadResource = FALSE; - } - if (m_bNeedDownLoadResource) { - FX_BOOL bRet = CheckResources(pHints); - if (!bRet) { - return FALSE; - } - 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; - } 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_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); - } -} -FX_INT32 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 (!m_bMainXRefLoad && !CheckLinearizedData(pHints)) { - return PDFFORM_NOTAVAIL; - } - 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; -} -void CPDF_SortObjNumArray::AddObjNum(FX_DWORD dwObjNum) -{ - FX_INT32 iNext = 0; - if (BinarySearch(dwObjNum, iNext)) { - return; - } - m_number_array.InsertAt(iNext, dwObjNum); -} -FX_BOOL CPDF_SortObjNumArray::Find(FX_DWORD dwObjNum) -{ - FX_INT32 iNext = 0; - return BinarySearch(dwObjNum, iNext); -} -FX_BOOL CPDF_SortObjNumArray::BinarySearch(FX_DWORD value, FX_INT32 &iNext) -{ - FX_INT32 iLen = m_number_array.GetSize(); - FX_INT32 iLow = 0; - FX_INT32 iHigh = iLen - 1; - FX_INT32 iMid = 0; - while (iLow <= iHigh) { - iMid = (iLow + iHigh) / 2; - FX_DWORD tt = m_number_array.GetAt(iMid); - if (m_number_array.GetAt(iMid) == value) { - iNext = iMid; - return TRUE; - } else 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() -{ - FX_INT32 iSize = m_childNode.GetSize(); - for (FX_INT32 i = 0; i < iSize; ++i) { - CPDF_PageNode *pNode = (CPDF_PageNode*)m_childNode[i]; - if (pNode) { - delete pNode; - } - } - m_childNode.RemoveAll(); -} +// Copyright 2014 PDFium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com + +#include "../../../include/fpdfapi/fpdf_parser.h" +#include "../../../include/fpdfapi/fpdf_module.h" +#include "../../../include/fpdfapi/fpdf_page.h" +#include "../fpdf_page/pageint.h" +#include +#define _PARSER_OBJECT_LEVLE_ 64 +extern const FX_LPCSTR _PDF_CharType; +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) { + return FALSE; + } + } + if (pType->GetString() == FX_BSTRC("Sig")) { + return TRUE; + } + return FALSE; +} +static FX_INT32 _CompareDWord(const void* p1, const void* p2) +{ + return (*(FX_DWORD*)p1) - (*(FX_DWORD*)p2); +} +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_bForceUseSecurityHandler = FALSE; +} +CPDF_Parser::~CPDF_Parser() +{ + CloseParser(FALSE); +} +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::CloseParser(FX_BOOL bReParse) +{ + m_bVersionUpdated = FALSE; + if (m_pDocument && !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 != NULL) { + m_Syntax.m_pFileAccess->Release(); + m_Syntax.m_pFileAccess = NULL; + } + FX_POSITION pos = m_ObjectStreamMap.GetStartPosition(); + while (pos) { + FX_LPVOID 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(); + FX_INT32 iLen = m_Trailers.GetSize(); + for (FX_INT32 i = 0; i < iLen; ++i) { + m_Trailers.GetAt(i)->Release(); + } + m_Trailers.RemoveAll(); + if (m_pLinearized) { + m_pLinearized->Release(); + m_pLinearized = NULL; + } +} +static FX_INT32 GetHeaderOffset(IFX_FileRead* pFile) +{ + FX_DWORD tag = FXDWORD_FROM_LSBFIRST(0x46445025); + FX_BYTE buf[4]; + FX_INT32 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(FX_LPCSTR 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(FX_LPCWSTR 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; + FX_INT32 offset = GetHeaderOffset(pFileAccess); + if (offset == -1) { + if (bOwnFileRead && pFileAccess) { + pFileAccess->Release(); + } + return PDFPARSE_ERROR_FORMAT; + } + m_Syntax.InitParser(pFileAccess, offset); + FX_BYTE ch; + m_Syntax.GetCharAt(5, ch); + m_FileVersion = (ch - '0') * 10; + m_Syntax.GetCharAt(7, ch); + m_FileVersion += ch - '0'; + m_Syntax.RestorePos(m_Syntax.m_FileLen - m_Syntax.m_HeaderOffset - 9); + if (!bReParse) { + m_pDocument = FX_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(); + FX_LPVOID 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; + } + 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; + } + 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 (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_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); + } + return PDFPARSE_ERROR_SUCCESS; +} +void CPDF_Parser::ReleaseEncryptHandler() +{ + if (m_Syntax.m_pCryptoHandler) { + delete m_Syntax.m_pCryptoHandler; + m_Syntax.m_pCryptoHandler = NULL; + } + if (m_pSecurityHandler && !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[(FX_INT32)m_CrossRef[objnum]]; + } + return 0; +} +static FX_INT32 GetDirectInteger(CPDF_Dictionary* pDict, FX_BSTR 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, FX_BSTR key, FX_INT32 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; + } + FX_INT32 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) { + pDict->Release(); + return FALSE; + } + xrefpos = newxrefpos; + XRefStreamList.InsertAt(0, pDict->GetInteger(FX_BSTRC("XRefStm"))); + m_Trailers.Add(pDict); + } + for (FX_INT32 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; + } + FX_INT32 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 (FX_INT32 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); + FX_LPVOID 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(); + FX_INT32 recordsize = 20; + char* pBuf = FX_Alloc(char, 1024 * recordsize + 1); + pBuf[1024 * recordsize] = '\0'; + FX_INT32 nBlocks = count / 1024 + 1; + for (FX_INT32 block = 0; block < nBlocks; block ++) { + FX_INT32 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((FX_LPBYTE)pBuf, dwReadSize)) { + FX_Free(pBuf); + return FALSE; + } + for (FX_INT32 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 { + FX_INT32 offset = FXSYS_atoi(pEntry); + if (offset == 0) { + for (FX_INT32 c = 0; c < 10; c ++) { + if (pEntry[c] < '0' || pEntry[c] > '9') { + FX_Free(pBuf); + return FALSE; + } + } + } + m_CrossRef.SetAtGrow(objnum, offset); + FX_INT32 version = FXSYS_atoi(pEntry + 11); + if (version >= 1) { + m_bVersionUpdated = TRUE; + } + m_ObjVersion.SetAtGrow(objnum, version); + if (m_CrossRef[objnum] < m_Syntax.m_FileLen) { + FX_LPVOID 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; + } + FX_LPVOID pResult = FXSYS_bsearch(&pos, m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize); + if (pResult == NULL) { + m_SortedOffset.Add(pos); + } + if (streampos) { + FX_LPVOID pResult = FXSYS_bsearch(&streampos, m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize); + if (pResult == NULL) { + m_SortedOffset.Add(streampos); + } + } + 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; + FX_INT32 recordsize = 20; + if (bFirst) { + bFirstItem = TRUE; + } + m_dwXrefStartObjNum = start_objnum; + if (!bSkip) { + char* pBuf = FX_Alloc(char, 1024 * recordsize + 1); + pBuf[1024 * recordsize] = '\0'; + FX_INT32 nBlocks = count / 1024 + 1; + FX_BOOL bFirstBlock = TRUE; + for (FX_INT32 block = 0; block < nBlocks; block ++) { + FX_INT32 block_size = block == nBlocks - 1 ? count % 1024 : 1024; + m_Syntax.ReadBlock((FX_LPBYTE)pBuf, block_size * recordsize); + for (FX_INT32 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); + FX_INT32 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 (FX_INT32 c = 0; c < 10; c ++) { + if (pEntry[c] < '0' || pEntry[c] > '9') { + FX_Free(pBuf); + return FALSE; + } + } + } + m_CrossRef.SetAtGrow(objnum, offset); + FX_INT32 version = FXSYS_atoi(pEntry + 11); + if (version >= 1) { + m_bVersionUpdated = TRUE; + } + m_ObjVersion.SetAtGrow(objnum, version); + if (m_CrossRef[objnum] < m_Syntax.m_FileLen) { + FX_LPVOID 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); + } + m_Syntax.RestorePos(SavedPos + count * recordsize); + } + if (streampos) + if (!LoadCrossRefV5(streampos, streampos, FALSE)) { + return FALSE; + } + 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; + } + 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; + } + FX_INT32 status = 0; + FX_INT32 inside_index = 0; + FX_DWORD objnum, gennum; + FX_INT32 depth = 0; + FX_LPBYTE buffer = FX_Alloc(FX_BYTE, 4096); + FX_FILESIZE pos = m_Syntax.m_HeaderOffset; + FX_FILESIZE start_pos, start_pos1; + FX_FILESIZE last_obj = -1, last_xref = -1, last_trailer = -1; + FX_BOOL bInUpdate = FALSE; + 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 ++) { + FX_BYTE byte = buffer[i]; + FX_LPBYTE pData = 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; + FX_LPVOID 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() > (FX_INT32)objnum && m_CrossRef[objnum]) { + if (pObject) { + FX_DWORD oldgen = m_ObjVersion.GetAt(objnum); + m_CrossRef[objnum] = obj_pos; + m_ObjVersion.SetAt(objnum, (FX_SHORT)gennum); + if (oldgen != gennum) { + m_bVersionUpdated = TRUE; + } + } + } else { + m_CrossRef.SetAtGrow(objnum, obj_pos); + m_V5Type.SetAtGrow(objnum, 1); + m_ObjVersion.SetAtGrow(objnum, (FX_SHORT)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(); + } + bInUpdate = TRUE; + } + } + } + --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; + FX_LPVOID 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(FX_LPCBYTE p, FX_INT32 n) +{ + FX_DWORD result = 0; + for (FX_INT32 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) { + m_pDocument->InsertIndirectObject(pStream->m_ObjNum, pStream); + } + if (pStream->GetType() != PDFOBJ_STREAM) { + return FALSE; + } + prev = pStream->GetDict()->GetInteger(FX_BSTRC("Prev")); + FX_INT32 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_memset32(m_V5Type.GetData(), 0, size); + } + } else { + m_Trailers.Add((CPDF_Dictionary*)pStream->GetDict()->Clone()); + } + CFX_DWordArray IndexArray, WidthArray; + FX_DWORD nSegs = 0; + CPDF_Array* pArray = pStream->GetDict()->GetArray(FX_BSTRC("Index")); + if (pArray == NULL) { + IndexArray.Add(0); + IndexArray.Add(size); + nSegs = 1; + } else { + for (FX_DWORD i = 0; i < pArray->GetCount(); i ++) { + IndexArray.Add(pArray->GetInteger(i)); + } + nSegs = pArray->GetCount() / 2; + } + pArray = pStream->GetDict()->GetArray(FX_BSTRC("W")); + if (pArray == NULL) { + pStream->Release(); + return FALSE; + } + FX_DWORD totalwidth = 0; + FX_DWORD i; + for (i = 0; i < pArray->GetCount(); i ++) { + WidthArray.Add(pArray->GetInteger(i)); + if (totalwidth + WidthArray[i] < totalwidth) { + pStream->Release(); + return FALSE; + } + totalwidth += WidthArray[i]; + } + if (totalwidth == 0 || WidthArray.GetSize() < 3) { + pStream->Release(); + return FALSE; + } + CPDF_StreamAcc acc; + acc.LoadAllData(pStream); + FX_LPCBYTE pData = acc.GetData(); + FX_DWORD dwTotalSize = acc.GetSize(); + FX_DWORD segindex = 0; + for (i = 0; i < nSegs; i ++) { + FX_INT32 startnum = IndexArray[i * 2]; + if (startnum < 0) { + continue; + } + m_dwXrefStartObjNum = startnum; + FX_DWORD count = IndexArray[i * 2 + 1]; + if (segindex + count < segindex || segindex + count == 0 || + (FX_DWORD)totalwidth >= UINT_MAX / (segindex + count) || (segindex + count) * (FX_DWORD)totalwidth > dwTotalSize) { + continue; + } + FX_LPCBYTE segstart = pData + segindex * (FX_DWORD)totalwidth; + if ((FX_DWORD)startnum + count < (FX_DWORD)startnum || + (FX_DWORD)startnum + count > (FX_DWORD)m_V5Type.GetSize()) { + continue; + } + for (FX_DWORD j = 0; j < count; j ++) { + FX_INT32 type = 1; + FX_LPCBYTE 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; + FX_LPVOID 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) { + FX_LPVOID 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->GetElement(FX_BSTRC("ID")); + 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_Reference* pRef = (CPDF_Reference*)m_pTrailer->GetElement(FX_BSTRC("Root")); + if (pRef == NULL || pRef->GetType() != PDFOBJ_REFERENCE) { + return 0; + } + return pRef->GetRefObjNum(); +} +FX_DWORD CPDF_Parser::GetInfoObjNum() +{ + CPDF_Reference* pRef = (CPDF_Reference*)m_pTrailer->GetElement(FX_BSTRC("Info")); + if (pRef == NULL || pRef->GetType() != PDFOBJ_REFERENCE) { + return 0; + } + return 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]; + FX_LPVOID 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; +} +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; + } + FX_INT32 n = pObjStream->GetDict()->GetInteger(FX_BSTRC("N")); + FX_INT32 offset = pObjStream->GetDict()->GetInteger(FX_BSTRC("First")); + CPDF_SyntaxParser syntax; + CFX_SmartPointer file(FX_CreateMemoryStream((FX_LPBYTE)pObjStream->GetData(), (size_t)pObjStream->GetSize(), FALSE)); + syntax.InitParser((IFX_FileStream*)file, 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, 0, pContext); + break; + } + n --; + } + return pRet; + } + return NULL; +} +CPDF_StreamAcc* CPDF_Parser::GetObjectStream(FX_DWORD objnum) +{ + CPDF_StreamAcc* pStreamAcc = NULL; + if (m_ObjectStreamMap.Lookup((void*)(FX_UINTPTR)objnum, (void*&)pStreamAcc)) { + return pStreamAcc; + } + const CPDF_Stream* pStream = (CPDF_Stream*)m_pDocument->GetIndirectObject(objnum); + if (pStream == NULL || pStream->GetType() != PDFOBJ_STREAM) { + return NULL; + } + pStreamAcc = FX_NEW CPDF_StreamAcc; + pStreamAcc->LoadAllData(pStream); + m_ObjectStreamMap.SetAt((void*)(FX_UINTPTR)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; + } + FX_LPVOID pResult = FXSYS_bsearch(&offset, m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize); + if (pResult == NULL) { + return 0; + } + if ((FX_FILESIZE*)pResult - (FX_FILESIZE*)m_SortedOffset.GetData() == m_SortedOffset.GetSize() - 1) { + return 0; + } + return ((FX_FILESIZE*)pResult)[1] - offset; + } + return 0; +} +void CPDF_Parser::GetIndirectBinary(FX_DWORD objnum, FX_LPBYTE& 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; + } + FX_INT32 n = pObjStream->GetDict()->GetInteger(FX_BSTRC("N")); + FX_INT32 offset = pObjStream->GetDict()->GetInteger(FX_BSTRC("First")); + CPDF_SyntaxParser syntax; + FX_LPCBYTE pData = pObjStream->GetData(); + FX_DWORD totalsize = pObjStream->GetSize(); + CFX_SmartPointer file(FX_CreateMemoryStream((FX_LPBYTE)pData, (size_t)totalsize, FALSE)); + syntax.InitParser((IFX_FileStream*)file, 0); + while (n) { + FX_DWORD thisnum = syntax.GetDirectNum(); + FX_DWORD thisoff = syntax.GetDirectNum(); + if (thisnum == objnum) { + if (n == 1) { + size = totalsize - (thisoff + offset); + } else { + FX_DWORD nextnum = syntax.GetDirectNum(); + FX_DWORD nextoff = syntax.GetDirectNum(); + size = nextoff - thisoff; + } + pBuffer = FX_Alloc(FX_BYTE, size); + FXSYS_memcpy32(pBuffer, pData + thisoff + offset, size); + return; + } + n --; + } + return; + } + 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 real_objnum = FXSYS_atoi(word); + if (real_objnum && real_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; + } + FX_LPVOID 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; + } + } + } + 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(); + } + size = (FX_DWORD)(nextoff - pos); + pBuffer = FX_Alloc(FX_BYTE, size); + m_Syntax.RestorePos(pos); + m_Syntax.ReadBlock(pBuffer, size); + m_Syntax.RestorePos(SavedPos); + } +} +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 real_objnum = FXSYS_atoi(word); + if (objnum && real_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.GetObject(pObjList, objnum, gennum, 0, pContext); + FX_FILESIZE endOffset = m_Syntax.SavePos(); + CFX_ByteString bsWord = m_Syntax.GetKeyword(); + if (bsWord == FX_BSTRC("endobj")) { + endOffset = m_Syntax.SavePos(); + } + FX_DWORD objSize = endOffset - objOffset; + m_Syntax.RestorePos(SavedPos); + if (pObj && !objnum) { + pObj->m_ObjNum = real_objnum; + } + 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 real_objnum = FXSYS_atoi(word); + if (objnum && real_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, 0, pContext); + if (pResultPos) { + *pResultPos = m_Syntax.m_Pos; + } + m_Syntax.RestorePos(SavedPos); + return pObj; +} +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 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(); +} +void CPDF_Parser::SetSecurityHandler(CPDF_SecurityHandler* pSecurityHandler, FX_BOOL bForced) +{ + ASSERT(m_pSecurityHandler == NULL); + if (m_pSecurityHandler && !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()->GetElement(FX_BSTRC("Linearized"))) { + m_Syntax.GetNextWord(bIsNumber); + CPDF_Object *pLen = m_pLinearized->GetDict()->GetElement(FX_BSTRC("L")); + if (!pLen) { + m_pLinearized->Release(); + 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 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; + FX_INT32 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 = FX_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; + } + FX_INT32 xrefsize = GetDirectInteger(m_pTrailer, FX_BSTRC("Size")); + if (xrefsize == 0) { + return FALSE; + } + 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; + } + 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; + } + } + 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; + } + 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_BOOL CPDF_Parser::LoadLinearizedAllCrossRefV5(FX_FILESIZE xrefpos) +{ + if (!LoadCrossRefV5(xrefpos, xrefpos, FALSE)) { + return FALSE; + } + while (xrefpos) + if (!LoadCrossRefV5(xrefpos, xrefpos, FALSE)) { + return FALSE; + } + 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); + FX_FILESIZE dwSavedPos = m_Syntax.SavePos(); + FX_BYTE ch = 0; + FX_DWORD dwCount = 0; + m_Syntax.GetNextChar(ch); + FX_INT32 type = _PDF_CharType[ch]; + while (type == 'W') { + ++dwCount; + if (m_Syntax.m_FileLen >= (FX_FILESIZE)(m_Syntax.SavePos() + m_Syntax.m_HeaderOffset)) { + break; + } + m_Syntax.GetNextChar(ch); + type = _PDF_CharType[ch]; + } + m_LastXRefOffset += dwCount; + FX_POSITION pos = m_ObjectStreamMap.GetStartPosition(); + while (pos) { + FX_LPVOID 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_DWORD), _CompareDWord); + m_Syntax.m_MetadataObjnum = dwSaveMetadataObjnum; + return PDFPARSE_ERROR_SUCCESS; +} +CPDF_SyntaxParser::CPDF_SyntaxParser() +{ + m_pFileAccess = NULL; + m_pCryptoHandler = NULL; + m_pFileBuf = NULL; + m_BufSize = CPDF_ModuleMgr::Get()->m_FileBufSize; + m_pFileBuf = NULL; + m_MetadataObjnum = 0; + m_dwWordPos = 0; +#if defined(_FPDFAPI_MINI_) + m_bFileStream = TRUE; +#else + m_bFileStream = FALSE; +#endif +} +CPDF_SyntaxParser::~CPDF_SyntaxParser() +{ + if (m_pFileBuf) { + FX_Free(m_pFileBuf); + } +} +FX_BOOL CPDF_SyntaxParser::GetCharAt(FX_FILESIZE pos, FX_BYTE& 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(FX_BYTE& 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, FX_BYTE& 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(FX_LPBYTE pBuf, FX_DWORD size) +{ + if (!m_pFileAccess->ReadBlock(pBuf, m_Pos + m_HeaderOffset, size)) { + return FALSE; + } + m_Pos += size; + return TRUE; +} +#define MAX_WORD_BUFFER 256 +void CPDF_SyntaxParser::GetNextWord() +{ + m_WordSize = 0; + m_bIsNumber = TRUE; + FX_BYTE ch; + if (!GetNextChar(ch)) { + return; + } + FX_BYTE 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 (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; + } else { + m_Pos --; + } + } + 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() +{ + FX_BYTE ch; + if (!GetNextChar(ch)) { + return CFX_ByteString(); + } + CFX_ByteTextBuf buf; + FX_INT32 parlevel = 0; + FX_INT32 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; + } + } + GetNextChar(ch); + return buf.GetByteString(); +} +CFX_ByteString CPDF_SyntaxParser::ReadHexString() +{ + FX_BYTE ch; + if (!GetNextChar(ch)) { + return CFX_ByteString(); + } + CFX_BinaryBuf buf; + FX_BOOL bFirst = TRUE; + FX_BYTE code = 0; + while (1) { + if (ch == '>') { + break; + } + if (ch >= '0' && ch <= '9') { + if (bFirst) { + code = (ch - '0') * 16; + } else { + code += ch - '0'; + buf.AppendByte((FX_BYTE)code); + } + bFirst = !bFirst; + } else if (ch >= 'A' && ch <= 'F') { + if (bFirst) { + code = (ch - 'A' + 10) * 16; + } else { + code += ch - 'A' + 10; + buf.AppendByte((FX_BYTE)code); + } + bFirst = !bFirst; + } else if (ch >= 'a' && ch <= 'f') { + if (bFirst) { + code = (ch - 'a' + 10) * 16; + } else { + code += ch - 'a' + 10; + buf.AppendByte((FX_BYTE)code); + } + bFirst = !bFirst; + } + if (!GetNextChar(ch)) { + break; + } + } + if (!bFirst) { + buf.AppendByte((FX_BYTE)code); + } + return buf.GetByteString(); +} +void CPDF_SyntaxParser::ToNextLine() +{ + FX_BYTE ch; + while (1) { + if (!GetNextChar(ch)) { + return; + } + if (ch == '\n') { + return; + } + if (ch == '\r') { + GetNextChar(ch); + if (ch == '\n') { + return; + } else { + m_Pos --; + return; + } + } + } +} +void CPDF_SyntaxParser::ToNextWord() +{ + FX_BYTE ch; + if (!GetNextChar(ch)) { + return; + } + FX_BYTE 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((FX_LPCSTR)m_WordBuffer, m_WordSize); +} +CFX_ByteString CPDF_SyntaxParser::GetKeyword() +{ + GetNextWord(); + return CFX_ByteString((FX_LPCSTR)m_WordBuffer, m_WordSize); +} +CPDF_Object* CPDF_SyntaxParser::GetObject(CPDF_IndirectObjects* pObjList, FX_DWORD objnum, FX_DWORD gennum, FX_INT32 level, PARSE_CONTEXT* pContext, FX_BOOL bDecrypt) +{ + if (level > _PARSER_OBJECT_LEVLE_) { + return NULL; + } + FX_FILESIZE SavedPos = m_Pos; + FX_BOOL bTypeOnly = pContext && (pContext->m_Flags & PDFPARSE_TYPEONLY); + FX_BOOL bIsNumber; + CFX_ByteString word = GetNextWord(bIsNumber); + CPDF_Object* pRet = NULL; + if (word.GetLength() == 0) { + if (bTypeOnly) { + return (CPDF_Object*)PDFOBJ_INVALID; + } + return NULL; + } + FX_FILESIZE wordOffset = m_Pos - word.GetLength(); + 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; + } + pRet = CPDF_Reference::Create(pObjList, objnum); + return pRet; + } else { + m_Pos = SavedPos; + if (bTypeOnly) { + return (CPDF_Object*)PDFOBJ_NUMBER; + } + pRet = CPDF_Number::Create(word); + return pRet; + } + } else { + m_Pos = SavedPos; + if (bTypeOnly) { + return (CPDF_Object*)PDFOBJ_NUMBER; + } + pRet = CPDF_Number::Create(word); + return pRet; + } + } + if (word == FX_BSTRC("true") || word == FX_BSTRC("false")) { + if (bTypeOnly) { + return (CPDF_Object*)PDFOBJ_BOOLEAN; + } + pRet = CPDF_Boolean::Create(word == FX_BSTRC("true")); + return pRet; + } + if (word == FX_BSTRC("null")) { + if (bTypeOnly) { + return (CPDF_Object*)PDFOBJ_NULL; + } + pRet = CPDF_Null::Create(); + return pRet; + } + if (word == FX_BSTRC("(")) { + if (bTypeOnly) { + return (CPDF_Object*)PDFOBJ_STRING; + } + FX_FILESIZE SavedPos = m_Pos - 1; + CFX_ByteString str = ReadString(); + if (m_pCryptoHandler && bDecrypt) { + m_pCryptoHandler->Decrypt(objnum, gennum, str); + } + pRet = CPDF_String::Create(str, FALSE); + return pRet; + } + if (word == FX_BSTRC("<")) { + if (bTypeOnly) { + return (CPDF_Object*)PDFOBJ_STRING; + } + FX_FILESIZE SavedPos = m_Pos - 1; + CFX_ByteString str = ReadHexString(); + if (m_pCryptoHandler && bDecrypt) { + m_pCryptoHandler->Decrypt(objnum, gennum, str); + } + pRet = CPDF_String::Create(str, TRUE); + return pRet; + } + if (word == FX_BSTRC("[")) { + if (bTypeOnly) { + return (CPDF_Object*)PDFOBJ_ARRAY; + } + CPDF_Array* pArray = CPDF_Array::Create(); + FX_FILESIZE firstPos = m_Pos - 1; + while (1) { + FX_FILESIZE SavedPos = m_Pos; + CPDF_Object* pObj = GetObject(pObjList, objnum, gennum, level + 1); + if (pObj == NULL) { + return pArray; + } + pArray->Add(pObj); + } + } + if (word[0] == '/') { + if (bTypeOnly) { + return (CPDF_Object*)PDFOBJ_NAME; + } + pRet = CPDF_Name::Create(PDF_NameDecode(CFX_ByteStringC(m_WordBuffer + 1, m_WordSize - 1))); + return pRet; + } + if (word == FX_BSTRC("<<")) { + FX_FILESIZE saveDictOffset = m_Pos - 2; + FX_DWORD dwDictSize = 0; + if (bTypeOnly) { + return (CPDF_Object*)PDFOBJ_DICTIONARY; + } + if (pContext) { + pContext->m_DictStart = SavedPos; + } + CPDF_Dictionary* pDict = CPDF_Dictionary::Create(); + FX_INT32 nKeys = 0; + FX_FILESIZE dwSignValuePos = 0; + while (1) { + FX_BOOL bIsNumber; + CFX_ByteString key = GetNextWord(bIsNumber); + if (key.IsEmpty()) { + pDict->Release(); + return NULL; + } + FX_FILESIZE SavedPos = m_Pos - key.GetLength(); + if (key == FX_BSTRC(">>")) { + dwDictSize = m_Pos - saveDictOffset; + break; + } + if (key == FX_BSTRC("endobj")) { + dwDictSize = m_Pos - 6 - saveDictOffset; + 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, level + 1); + if (pObj == NULL) { + continue; + } + if (key.GetLength() == 1) { + pDict->SetAt(CFX_ByteStringC(((FX_LPCSTR)key) + 1, key.GetLength() - 1), pObj); + } else { + if (nKeys < 32) { + pDict->SetAt(CFX_ByteStringC(((FX_LPCSTR)key) + 1, key.GetLength() - 1), pObj); + } else { + pDict->AddValue(CFX_ByteStringC(((FX_LPCSTR)key) + 1, key.GetLength() - 1), pObj); + } + } + } + if (IsSignatureDict(pDict)) { + FX_FILESIZE dwSavePos = m_Pos; + m_Pos = dwSignValuePos; + CPDF_Object* pObj = GetObject(pObjList, objnum, gennum, level + 1, 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; + } + 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, + FX_INT32 level, struct PARSE_CONTEXT* pContext) +{ + if (level > _PARSER_OBJECT_LEVLE_) { + 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 CPDF_Reference::Create(pObjList, objnum); + } else { + m_Pos = SavedPos; + if (bTypeOnly) { + return (CPDF_Object*)PDFOBJ_NUMBER; + } + return CPDF_Number::Create(word); + } + } else { + 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, level + 1); + if (pObj == NULL) { + if (m_WordBuffer[0] == ']') { + return 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()) { + 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, level + 1); + if (pObj == NULL) { + pDict->Release(); + FX_BYTE ch; + while (1) { + if (!GetNextChar(ch)) { + break; + } + if (ch == 0x0A || ch == 0x0D) { + break; + } + } + return NULL; + } + if (key.GetLength() == 1) { + pDict->SetAt(CFX_ByteStringC(((FX_LPCSTR)key) + 1, key.GetLength() - 1), pObj); + } else { + pDict->AddValue(CFX_ByteStringC(((FX_LPCSTR)key) + 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; + } + 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_DWORD len = 0; + if (pLenObj && (pLenObj->GetType() != PDFOBJ_REFERENCE || + ((((CPDF_Reference*)pLenObj)->GetObjList() != NULL) && + ((CPDF_Reference*)pLenObj)->GetRefObjNum() != objnum))) { + FX_FILESIZE pos = m_Pos; + if (pLenObj) { + len = pLenObj->GetInteger(); + } + m_Pos = pos; + if (len > 0x40000000) { + return NULL; + } + } + ToNextLine(); + FX_FILESIZE StreamStartPos = m_Pos; + if (pContext) { + pContext->m_DataStart = m_Pos; + } + m_Pos += len; + CPDF_CryptoHandler* pCryptoHandler = objnum == (FX_DWORD)m_MetadataObjnum ? NULL : m_pCryptoHandler; + if (pCryptoHandler == NULL) { + FX_FILESIZE SavedPos = m_Pos; + GetNextWord(); + if (m_WordSize < 9 || FXSYS_memcmp32(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; + } + FX_BYTE 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; +#if defined(_FPDFAPI_MINI_) && !defined(_FXCORE_FEATURE_ALL_) + pStream = FX_NEW CPDF_Stream(m_pFileAccess, pCryptoHandler, m_HeaderOffset + m_Pos, len, pDict, gennum); + m_Pos += len; +#else + FX_LPBYTE pData = FX_Alloc(FX_BYTE, len); + if (!pData) { + return NULL; + } + ReadBlock(pData, len); + if (pCryptoHandler) { + CFX_BinaryBuf dest_buf; + dest_buf.EstimateSize(pCryptoHandler->DecryptGetSize(len)); + FX_LPVOID 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 = FX_NEW CPDF_Stream(pData, len, pDict); +#endif + if (pContext) { + pContext->m_DataEnd = pContext->m_DataStart + len; + } + StreamStartPos = m_Pos; + GetNextWord(); + if (m_WordSize == 6 && 0 == FXSYS_memcmp32(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(FX_BYTE, 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_INT32 CPDF_SyntaxParser::GetDirectNum() +{ + GetNextWord(); + if (!m_bIsNumber) { + return 0; + } + m_WordBuffer[m_WordSize] = 0; + return FXSYS_atoi((FX_LPCSTR)m_WordBuffer); +} +FX_BOOL CPDF_SyntaxParser::IsWholeWord(FX_FILESIZE startpos, FX_FILESIZE limit, FX_LPCBYTE tag, FX_DWORD taglen) +{ + FX_BYTE 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'; + FX_BYTE ch; + if (bCheckRight && startpos + (FX_INT32)taglen <= limit && GetCharAt(startpos + (FX_INT32)taglen, ch)) { + FX_BYTE type = _PDF_CharType[ch]; + if (type == 'N' || type == 'R') { + return FALSE; + } + } + if (bCheckLeft && startpos > 0 && GetCharAt(startpos - 1, ch)) { + FX_BYTE type = _PDF_CharType[ch]; + if (type == 'N' || type == 'R') { + return FALSE; + } + } + return TRUE; +} +FX_BOOL CPDF_SyntaxParser::SearchWord(FX_BSTR tag, FX_BOOL bWholeWord, FX_BOOL bForward, FX_FILESIZE limit) +{ + FX_INT32 taglen = tag.GetLength(); + if (taglen == 0) { + return FALSE; + } + FX_FILESIZE pos = m_Pos; + FX_INT32 offset = 0; + if (!bForward) { + offset = taglen - 1; + } + FX_LPCBYTE tag_data = tag; + FX_BYTE 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, 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 { + FX_LPCBYTE m_pTag; + FX_DWORD m_Len; + FX_DWORD m_Offset; +}; +FX_INT32 CPDF_SyntaxParser::SearchMultiWord(FX_BSTR tags, FX_BOOL bWholeWord, FX_FILESIZE limit) +{ + FX_INT32 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; + FX_BYTE byte; + GetCharAt(pos++, byte); + FX_INT32 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(FX_BSTR tag, FX_FILESIZE limit) +{ + FX_INT32 taglen = tag.GetLength(); + FX_INT32 match = 0; + limit += m_Pos; + FX_FILESIZE startpos = m_Pos; + while (1) { + FX_BYTE 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(FX_BYTE* buffer, FX_DWORD size) +{ + FX_DWORD offset = 0; + FX_BYTE ch; + while (1) { + if (!GetNextChar(ch)) { + return; + } + buffer[offset++] = ch; + if (offset == size) { + break; + } + } +} +CPDF_DataAvail::CPDF_DataAvail(IFX_FileAvail* pFileAvail, IFX_FileRead* pFileRead) +{ + m_pFileAvail = pFileAvail; + m_pFileRead = 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_bMainXRefLoad = 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(); + } + if (m_pageMapCheckState) { + delete m_pageMapCheckState; + } + if (m_pagesLoadState) { + delete m_pagesLoadState; + } + FX_INT32 i = 0; + FX_INT32 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; +} +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; + } + FX_LPVOID 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; +} +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; + FX_INT32 i = 0; + for (i = 0; i < obj_array.GetSize(); i++) { + CPDF_Object *pObj = (CPDF_Object *)obj_array[i]; + if (!pObj) { + continue; + } + FX_INT32 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->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 size = GetObjectSize(pRef->GetRefObjNum(), offset); + if (!size) { + break; + } + size = (FX_DWORD)((FX_FILESIZE)(offset + size + 512) > m_dwFileLen ? m_dwFileLen - offset : size + 512); + if (!m_pFileAvail->IsDataAvail(offset, size)) { + pHints->AddSegment(offset, size); + 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) { + FX_INT32 iSize = new_obj_array.GetSize(); + for (i = 0; i < iSize; ++i) { + CPDF_Object *pObj = (CPDF_Object *)new_obj_array[i]; + FX_INT32 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); +} +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; + } else { + CFX_PtrArray new_objs_array; + FX_BOOL bRet = IsObjectsAvail(m_objs_array, FALSE, pHints, new_objs_array); + if (bRet) { + FX_INT32 iSize = m_arrayAcroforms.GetSize(); + for (FX_INT32 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); + } + 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; + } + m_arrayAcroforms.Add(m_pAcroForm); + 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); + } else { + return LoadDocPages(pHints); + } + case PDF_DATAAVAIL_PAGE: + if (m_bTotalLoadPageTree) { + return CheckPage(pHints); + } else { + 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::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::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::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; + if (pExistInFile) { + *pExistInFile = TRUE; + } + if (m_pDocument == NULL) { + FX_FILESIZE offset = m_parser.GetObjectOffset(objnum); + if (offset < 0) { + *pExistInFile = FALSE; + return NULL; + } + FX_DWORD size = (FX_DWORD)m_parser.GetObjectSize(objnum); + size = (FX_DWORD)(((FX_FILESIZE)(offset + size + 512)) > m_dwFileLen ? m_dwFileLen - offset : size + 512); + if (!m_pFileAvail->IsDataAvail(offset, size)) { + pHints->AddSegment(offset, size); + return NULL; + } + pRet = m_parser.ParseIndirectObject(NULL, objnum); + if (!pRet && pExistInFile) { + *pExistInFile = FALSE; + } + return pRet; + } + FX_FILESIZE offset; + FX_DWORD size = GetObjectSize(objnum, offset); + size = (FX_DWORD)((FX_FILESIZE)(offset + size + 512) > m_dwFileLen ? m_dwFileLen - offset : size + 512); + if (!m_pFileAvail->IsDataAvail(offset, size)) { + pHints->AddSegment(offset, size); + return NULL; + } + CPDF_Parser *pParser = (CPDF_Parser *)(m_pDocument->GetParser()); + pRet = pParser->ParseIndirectObject(NULL, objnum, NULL); + if (!pRet && pExistInFile) { + *pExistInFile = FALSE; + } + 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; + } + 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_Reference* pRef = (CPDF_Reference*)m_pRoot->GetDict()->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 = (CPDF_Reference*)pRoot->GetElement(FX_BSTRC("Pages")); + 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 = FX_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 = FX_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 i = 0; + FX_DWORD iLen = m_PageObjList.GetSize(); + CFX_DWordArray UnavailObjList; + for (; i < iLen; ++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) { + FX_INT32 iSize = pArray->GetCount(); + CPDF_Object *pItem = NULL; + for (FX_INT32 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; + } + i = 0; + iLen = m_PagesArray.GetSize(); + for (; i < iLen; ++i) { + CPDF_Object *pPages = (CPDF_Object *)m_PagesArray.GetAt(i); + if (!pPages) { + continue; + } + if (!GetPageKids(m_pCurrentParser, pPages)) { + pPages->Release(); + while (i++ < iLen) { + 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 TRUE; + } + return TRUE; +} +FX_BOOL CPDF_DataAvail::GetPageKids(CPDF_Parser *pParser, CPDF_Object *pPages) +{ + if (!pParser) { + m_docStatus = PDF_DATAAVAIL_ERROR; + return FALSE; + } + CPDF_Object *pKids = pPages->GetDict()->GetElement(FX_BSTRC("Kids")); + 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_Reference *pKid = (CPDF_Reference *)pKidsArray->GetElement(i); + m_PageObjList.Add(pKid->GetRefObjNum()); + } + } + break; + default: + m_docStatus = PDF_DATAAVAIL_ERROR; + return FALSE; + } + 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; + } + return FALSE; + } + FX_BOOL bNeedLoad = FALSE; + if (!GetPageKids(m_pCurrentParser, pPages)) { + pPages->Release(); + m_docStatus = PDF_DATAAVAIL_ERROR; + return FALSE; + } + pPages->Release(); + m_docStatus = PDF_DATAAVAIL_PAGE; + 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)) { + FX_BYTE 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); + return FALSE; +} +FX_BOOL CPDF_DataAvail::CheckFirstPage(IFX_DownloadHints *pHints) +{ + FX_DWORD dwFirstPageEndOffset = 0; + CPDF_Object *pEndOffSet = m_pLinearized->GetDict()->GetElement(FX_BSTRC("E")); + if (!pEndOffSet) { + m_docStatus = PDF_DATAAVAIL_ERROR; + return FALSE; + } + CPDF_Object *pXRefOffset = m_pLinearized->GetDict()->GetElement(FX_BSTRC("T")); + if (!pXRefOffset) { + m_docStatus = PDF_DATAAVAIL_ERROR; + return FALSE; + } + CPDF_Object *pFileLen = m_pLinearized->GetDict()->GetElement(FX_BSTRC("L")); + 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; + } + FX_INT32 iStartPos = (FX_INT32)(m_dwFileLen > 1024 ? 1024 : m_dwFileLen); + FX_INT32 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; +} +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 real_objnum = FXSYS_atoi(word); + if (objnum && real_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; +} +FX_INT32 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_BYTE 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(FX_LPBYTE pData, FX_DWORD dwLen) +{ + CFX_SmartPointer file(FX_CreateMemoryStream(pData, (size_t)dwLen, FALSE)); + FX_INT32 offset = GetHeaderOffset((IFX_FileStream*)file); + if (offset == -1) { + m_docStatus = PDF_DATAAVAIL_ERROR; + return FALSE; + } + m_dwHeaderOffset = offset; + m_syntaxParser.InitParser((IFX_FileStream*)file, offset); + m_syntaxParser.RestorePos(m_syntaxParser.m_HeaderOffset + 9); + FX_BOOL bNumber = FALSE; + FX_FILESIZE dwSavePos = m_syntaxParser.SavePos(); + 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()->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; +} +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)) { + FX_BYTE buffer[1024]; + m_pFileRead->ReadBlock(buffer, req_pos, dwSize); + CFX_SmartPointer file(FX_CreateMemoryStream(buffer, (size_t)dwSize, FALSE)); + m_syntaxParser.InitParser((IFX_FileStream*)file, 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; + } else { + m_docStatus = PDF_DATAAVAIL_LOADALLFILE; + return TRUE; + } + } + pHints->AddSegment(req_pos, dwSize); + return FALSE; +} +FX_DWORD 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)) { + FX_INT32 iSize = (FX_INT32)(m_Pos + req_size - m_dwCurrentXRefSteam); + CFX_BinaryBuf buf(iSize); + FX_LPBYTE pBuf = buf.GetBuffer(); + m_pFileRead->ReadBlock(pBuf, m_dwCurrentXRefSteam, iSize); + CFX_SmartPointer file(FX_CreateMemoryStream(pBuf, (size_t)iSize, FALSE)); + m_parser.m_Syntax.InitParser((IFX_FileStream*)file, 0); + FX_BOOL bNumber = FALSE; + FX_FILESIZE dwSavePos = m_parser.m_Syntax.SavePos(); + 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_Object *pName = pObj->GetDict()->GetElement(FX_BSTRC("Type")); + 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; + } else { + pObj->Release(); + return -1; + } + } + pObj->Release(); + return -1; + } + pHints->AddSegment(m_Pos, req_size); + return 0; +} +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; + FX_BYTE ch; + if (!GetNextChar(ch)) { + return FALSE; + } + FX_BYTE 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; + } + } + CFX_ByteString ret(m_WordBuffer, m_WordSize); + token = ret; + return TRUE; +} +FX_BOOL CPDF_DataAvail::GetNextChar(FX_BYTE &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) +{ + FX_INT32 iSize = 0; + CFX_ByteString token; + while (1) { + if (!GetNextToken(token)) { + iSize = (FX_INT32)(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; + FX_DWORD dwRet = CheckCrossRefStream(pHints, xref_offset); + if (dwRet == 1) { + if (!xref_offset) { + m_docStatus = PDF_DATAAVAIL_LOADALLCRSOSSREF; + } else { + m_dwCurrentXRefSteam = xref_offset; + m_Pos = xref_offset; + } + return TRUE; + } else if (dwRet == -1) { + m_docStatus = PDF_DATAAVAIL_ERROR; + } + return FALSE; +} +FX_BOOL CPDF_DataAvail::CheckCrossRef(IFX_DownloadHints* pHints) +{ + FX_FILESIZE dwSavePos = m_Pos; + FX_INT32 iSize = 0; + CFX_ByteString token; + if (!GetNextToken(token)) { + iSize = (FX_INT32)(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 = (FX_INT32)(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_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(); + FX_INT32 iSize = (FX_INT32)(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::CheckTrailer(IFX_DownloadHints* pHints) +{ + FX_INT32 iTrailerSize = (FX_INT32)(m_Pos + 512 > m_dwFileLen ? m_dwFileLen - m_Pos : 512); + if (m_pFileAvail->IsDataAvail(m_Pos, iTrailerSize)) { + FX_INT32 iSize = (FX_INT32)(m_Pos + iTrailerSize - m_dwTrailerOffset); + CFX_BinaryBuf buf(iSize); + FX_LPBYTE pBuf = buf.GetBuffer(); + if (!pBuf) { + m_docStatus = PDF_DATAAVAIL_ERROR; + return FALSE; + } + if (!m_pFileRead->ReadBlock(pBuf, m_dwTrailerOffset, iSize)) { + return FALSE; + } + CFX_SmartPointer file(FX_CreateMemoryStream(pBuf, (size_t)iSize, FALSE)); + m_syntaxParser.InitParser((IFX_FileStream*)file, 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; + } + 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; + } else { + m_dwPrevXRefOffset = 0; + m_docStatus = PDF_DATAAVAIL_TRAILER_APPEND; + pTrailer->Release(); + } + return TRUE; + } + pHints->AddSegment(m_Pos, iTrailerSize); + return FALSE; +} +FX_BOOL CPDF_DataAvail::CheckPage(FX_INT32 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_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 = FX_NEW CPDF_PageNode(); + pPageNode->m_childNode.Add(pNode); + pNode->m_dwPageNo = ((CPDF_Reference*)pKid)->GetRefObjNum(); + } + pPages->Release(); + 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; + } + if (!pPage) { + if (m_docStatus == PDF_DATAAVAIL_ERROR) { + m_docStatus = PDF_DATAAVAIL_ERROR; + return FALSE; + } + 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; + CFX_ByteString type = pPage->GetDict()->GetString(FX_BSTRC("Type")); + if (type == FX_BSTRC("Pages")) { + pPageNode->m_type = PDF_PAGENODE_PAGES; + CPDF_Object *pKids = pPage->GetDict()->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 = FX_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 = FX_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::CheckPageNode(CPDF_PageNode &pageNodes, FX_INT32 iPage, FX_INT32 &iCount, IFX_DownloadHints* pHints) +{ + FX_INT32 iSize = pageNodes.m_childNode.GetSize(); + if (!iSize) { + m_docStatus = PDF_DATAAVAIL_ERROR; + return FALSE; + } + for (FX_INT32 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(FX_INT32 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_docStatus = PDF_DATAAVAIL_ERROR; + return TRUE; + } + FX_INT32 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::LoadDocPages(IFX_DownloadHints* pHints) +{ + if (!CheckUnkownPageNode(m_PagesObjNum, &m_pageNodes, pHints)) { + return FALSE; + } + if (CheckPageCount(pHints)) { + m_docStatus = PDF_DATAAVAIL_PAGE; + return TRUE; + } else { + 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_pFileAvail->IsDataAvail(m_dwLastXRefOffset, (FX_DWORD)(m_dwFileLen - m_dwLastXRefOffset))) { + pHints->AddSegment(m_dwLastXRefOffset, (FX_DWORD)(m_dwFileLen - m_dwLastXRefOffset)); + return FALSE; + } + FX_DWORD dwRet = 0; + if (!m_bMainXRefLoad) { + dwRet = ((CPDF_Parser *)m_pDocument->GetParser())->LoadLinearizedMainXRefTable(); + if (dwRet == PDFPARSE_ERROR_SUCCESS) { + if (!PreparePageItem()) { + return FALSE; + } + m_bMainXRefLoadedOK = TRUE; + } + m_bMainXRefLoad = TRUE; + } + m_bLinearedDataOK = TRUE; + return TRUE; +} +FX_BOOL CPDF_DataAvail::CheckPageAnnots(FX_INT32 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; + } 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_objs_array.Append(new_objs_array); + } + return bRet; + } +} +FX_BOOL CPDF_DataAvail::CheckLinearizedFirstPage(FX_INT32 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) +{ + CPDF_Object *pParent = pDict->GetElement("Parent"); + if (!pParent) { + return FALSE; + } + CPDF_Dictionary *pParentDict = pParent->GetDict(); + if (!pParentDict) { + return FALSE; + } + CPDF_Object *pRet = pParentDict->GetElement("Resource"); + if (pRet) { + m_pPageResource = pRet; + return TRUE; + } else { + return HaveResourceAncestor(pParentDict); + } +} +FX_BOOL CPDF_DataAvail::IsPageAvail(FX_INT32 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 = FX_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; + } + 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; + } + } 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; + } + } + if (m_pPageDict && !m_bNeedDownLoadResource) { + CPDF_Object *pRes = m_pPageDict->GetElement("Resource"); + if (!pRes) { + m_bNeedDownLoadResource = HaveResourceAncestor(m_pPageDict); + } + m_bNeedDownLoadResource = FALSE; + } + if (m_bNeedDownLoadResource) { + FX_BOOL bRet = CheckResources(pHints); + if (!bRet) { + return FALSE; + } + 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; + } 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_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); + } +} +FX_INT32 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 (!m_bMainXRefLoad && !CheckLinearizedData(pHints)) { + return PDFFORM_NOTAVAIL; + } + 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; +} +void CPDF_SortObjNumArray::AddObjNum(FX_DWORD dwObjNum) +{ + FX_INT32 iNext = 0; + if (BinarySearch(dwObjNum, iNext)) { + return; + } + m_number_array.InsertAt(iNext, dwObjNum); +} +FX_BOOL CPDF_SortObjNumArray::Find(FX_DWORD dwObjNum) +{ + FX_INT32 iNext = 0; + return BinarySearch(dwObjNum, iNext); +} +FX_BOOL CPDF_SortObjNumArray::BinarySearch(FX_DWORD value, FX_INT32 &iNext) +{ + FX_INT32 iLen = m_number_array.GetSize(); + FX_INT32 iLow = 0; + FX_INT32 iHigh = iLen - 1; + FX_INT32 iMid = 0; + while (iLow <= iHigh) { + iMid = (iLow + iHigh) / 2; + FX_DWORD tt = m_number_array.GetAt(iMid); + if (m_number_array.GetAt(iMid) == value) { + iNext = iMid; + return TRUE; + } else 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() +{ + FX_INT32 iSize = m_childNode.GetSize(); + for (FX_INT32 i = 0; i < iSize; ++i) { + CPDF_PageNode *pNode = (CPDF_PageNode*)m_childNode[i]; + if (pNode) { + delete pNode; + } + } + m_childNode.RemoveAll(); +} diff --git a/core/src/fxcodec/fx_zlib/zlib_v128/gzguts.h b/core/src/fxcodec/fx_zlib/zlib_v128/gzguts.h index e4454aa65d..a877c0eee3 100644 --- a/core/src/fxcodec/fx_zlib/zlib_v128/gzguts.h +++ b/core/src/fxcodec/fx_zlib/zlib_v128/gzguts.h @@ -29,10 +29,8 @@ #ifdef _WIN32 # include -#endif - -#ifdef __APPLE__ -#include +#else +# include #endif #if defined(__TURBOC__) || defined(_MSC_VER) || defined(_WIN32) diff --git a/core/src/fxcodec/lcms2/lcms2-2.6/src/cmsplugin.c b/core/src/fxcodec/lcms2/lcms2-2.6/src/cmsplugin.c index 55928b7018..8903d2bd61 100644 --- a/core/src/fxcodec/lcms2/lcms2-2.6/src/cmsplugin.c +++ b/core/src/fxcodec/lcms2/lcms2-2.6/src/cmsplugin.c @@ -689,7 +689,7 @@ void* _cmsContextGetClientChunk(cmsContext ContextID, _cmsMemoryClient mc) struct _cmsContext_struct* ctx; void *ptr; - if (mc < 0 || mc >= MemoryClientMax) { + if (mc >= MemoryClientMax) { cmsSignalError(ContextID, cmsERROR_RANGE, "Bad context client"); return NULL; } diff --git a/core/src/fxge/agg/agg23/fx_agg_driver.cpp b/core/src/fxge/agg/agg23/fx_agg_driver.cpp index e0fd065532..c3f42bf9f9 100644 --- a/core/src/fxge/agg/agg23/fx_agg_driver.cpp +++ b/core/src/fxge/agg/agg23/fx_agg_driver.cpp @@ -616,7 +616,6 @@ public: int col_start = span_left < clip_left ? clip_left - span_left : 0; int col_end = (span_left + span_len) < clip_right ? span_len : (clip_right - span_left); dest_scan += col_start; - Bpp; if (dest_extra_alpha_scan) { for (int col = col_start; col < col_end; col ++) { int src_alpha; @@ -884,7 +883,6 @@ public: int col_start = span_left < clip_left ? clip_left - span_left : 0; int col_end = (span_left + span_len) < clip_right ? span_len : (clip_right - span_left); dest_scan += col_start * 4; - Bpp; if (dest_extra_alpha_scan) { for (int col = col_start; col < col_end; col ++) { int src_alpha; diff --git a/core/src/fxge/fx_freetype/fxft2.5.01/src/sfnt/ttload.c b/core/src/fxge/fx_freetype/fxft2.5.01/src/sfnt/ttload.c index 38b7559e13..95eb2bb14c 100644 --- a/core/src/fxge/fx_freetype/fxft2.5.01/src/sfnt/ttload.c +++ b/core/src/fxge/fx_freetype/fxft2.5.01/src/sfnt/ttload.c @@ -58,7 +58,7 @@ TT_Table temp = NULL; if (!entry) return NULL; - for (first; first < limit; first++){ + for (; first < limit; first++){ if (entry->Offset + entry->Length <= first->Offset){ if (!temp || first->Offset < temp->Offset){ temp = first; diff --git a/pdfium.gyp b/pdfium.gyp index 26c5d72ab7..2135b2f44f 100644 --- a/pdfium.gyp +++ b/pdfium.gyp @@ -1,6 +1,5 @@ { 'variables': { - 'win_third_party_warn_as_error': 'false', 'pdf_use_skia%': 0, }, 'target_defaults': { @@ -37,12 +36,11 @@ ['OS=="mac"', { 'xcode_settings': { 'GCC_ENABLE_CPP_EXCEPTIONS': 'YES', - 'GCC_TREAT_WARNINGS_AS_ERRORS': 'NO', # -Werror }, }], ['clang==1', { 'cflags!': [ - '-Werror', + '-Wheader-hygiene', ], }], ], -- cgit v1.2.3