diff options
Diffstat (limited to 'core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp')
| -rw-r--r-- | core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp | 135 |
1 files changed, 77 insertions, 58 deletions
diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp index 71cd8443d5..b2f7eb6d7e 100644 --- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp +++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp @@ -258,9 +258,11 @@ FX_DWORD CPDF_Parser::StartParse(IFX_FileRead* pFileAccess, } if (m_pSecurityHandler && !m_pSecurityHandler->IsMetadataEncrypted()) { CPDF_Reference* pMetadata = - ToReference(m_pDocument->GetRoot()->GetElement(FX_BSTRC("Metadata"))); - if (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; } @@ -274,10 +276,12 @@ FX_DWORD CPDF_Parser::SetEncryptHandler() { if (pEncryptObj) { if (CPDF_Dictionary* pEncryptDict = pEncryptObj->AsDictionary()) { SetEncryptDictionary(pEncryptDict); - } else if (CPDF_Reference* pRef = pEncryptObj->AsReference()) { - pEncryptObj = m_pDocument->GetIndirectObject(pRef->GetRefObjNum()); - if (pEncryptObj) + } else if (pEncryptObj->GetType() == PDFOBJ_REFERENCE) { + pEncryptObj = m_pDocument->GetIndirectObject( + ((CPDF_Reference*)pEncryptObj)->GetRefObjNum()); + if (pEncryptObj) { SetEncryptDictionary(pEncryptObj->GetDict()); + } } } if (m_bForceUseSecurityHandler) { @@ -836,12 +840,12 @@ FX_BOOL CPDF_Parser::RebuildCrossRef() { if (m_pTrailer) { CPDF_Object* pRoot = pTrailer->GetElement(FX_BSTRC("Root")); - CPDF_Reference* pRef = ToReference(pRoot); - if (!pRoot || - (pRef && + if (pRoot == NULL || + (pRoot->GetType() == PDFOBJ_REFERENCE && (FX_DWORD)m_CrossRef.GetSize() > - pRef->GetRefObjNum() && - m_CrossRef.GetAt(pRef->GetRefObjNum()) != 0)) { + ((CPDF_Reference*)pRoot)->GetRefObjNum() && + m_CrossRef.GetAt(((CPDF_Reference*)pRoot) + ->GetRefObjNum()) != 0)) { FX_POSITION pos = pTrailer->GetStartPos(); while (pos) { CFX_ByteString key; @@ -1125,21 +1129,27 @@ CPDF_Array* CPDF_Parser::GetIDArray() { if (!pID) return nullptr; - if (CPDF_Reference* pRef = pID->AsReference()) { - pID = ParseIndirectObject(nullptr, pRef->GetRefObjNum()); + if (pID->GetType() == PDFOBJ_REFERENCE) { + pID = ParseIndirectObject(NULL, ((CPDF_Reference*)pID)->GetRefObjNum()); m_pTrailer->SetAt(FX_BSTRC("ID"), pID); } return ToArray(pID); } FX_DWORD CPDF_Parser::GetRootObjNum() { - CPDF_Reference* pRef = ToReference( - m_pTrailer ? m_pTrailer->GetElement(FX_BSTRC("Root")) : nullptr); - return pRef ? pRef->GetRefObjNum() : 0; + CPDF_Object* pRef = + m_pTrailer ? m_pTrailer->GetElement(FX_BSTRC("Root")) : NULL; + if (pRef == NULL || pRef->GetType() != PDFOBJ_REFERENCE) { + return 0; + } + return ((CPDF_Reference*)pRef)->GetRefObjNum(); } FX_DWORD CPDF_Parser::GetInfoObjNum() { - CPDF_Reference* pRef = ToReference( - m_pTrailer ? m_pTrailer->GetElement(FX_BSTRC("Info")) : nullptr); - return pRef ? pRef->GetRefObjNum() : 0; + CPDF_Object* pRef = + m_pTrailer ? m_pTrailer->GetElement(FX_BSTRC("Info")) : NULL; + if (pRef == NULL || pRef->GetType() != PDFOBJ_REFERENCE) { + return 0; + } + return ((CPDF_Reference*)pRef)->GetRefObjNum(); } FX_BOOL CPDF_Parser::IsFormStream(FX_DWORD objnum, FX_BOOL& bForm) { bForm = FALSE; @@ -1607,9 +1617,11 @@ FX_DWORD CPDF_Parser::StartAsynParse(IFX_FileRead* pFileAccess, } } if (m_pSecurityHandler && m_pSecurityHandler->IsMetadataEncrypted()) { - if (CPDF_Reference* pMetadata = ToReference( - m_pDocument->GetRoot()->GetElement(FX_BSTRC("Metadata")))) - m_Syntax.m_MetadataObjnum = pMetadata->GetRefObjNum(); + CPDF_Object* pMetadata = + m_pDocument->GetRoot()->GetElement(FX_BSTRC("Metadata")); + if (pMetadata && pMetadata->GetType() == PDFOBJ_REFERENCE) { + m_Syntax.m_MetadataObjnum = ((CPDF_Reference*)pMetadata)->GetRefObjNum(); + } } return PDFPARSE_ERROR_SUCCESS; } @@ -2362,13 +2374,11 @@ CPDF_Stream* CPDF_SyntaxParser::ReadStream(CPDF_Dictionary* pDict, FX_DWORD gennum) { CPDF_Object* pLenObj = pDict->GetElement(FX_BSTRC("Length")); FX_FILESIZE len = -1; - CPDF_Reference* pLenObjRef = ToReference(pLenObj); - - bool differingObjNum = pLenObjRef && pLenObjRef->GetObjList() && - pLenObjRef->GetRefObjNum() != objnum; - if (pLenObj && differingObjNum) + if (pLenObj && ((pLenObj->GetType() != PDFOBJ_REFERENCE) || + ((((CPDF_Reference*)pLenObj)->GetObjList()) && + ((CPDF_Reference*)pLenObj)->GetRefObjNum() != objnum))) { len = pLenObj->GetInteger(); - + } // Locate the start of stream. ToNextLine(); FX_FILESIZE streamStartPos = m_Pos; @@ -3054,7 +3064,7 @@ FX_BOOL CPDF_DataAvail::IsObjectsAvail(CFX_PtrArray& obj_array, } } break; case PDFOBJ_REFERENCE: { - CPDF_Reference* pRef = pObj->AsReference(); + CPDF_Reference* pRef = (CPDF_Reference*)pObj; FX_DWORD dwNum = pRef->GetRefObjNum(); FX_FILESIZE offset; FX_DWORD original_size = GetObjectSize(dwNum, offset); @@ -3096,10 +3106,13 @@ FX_BOOL CPDF_DataAvail::IsObjectsAvail(CFX_PtrArray& obj_array, int32_t iSize = new_obj_array.GetSize(); for (i = 0; i < iSize; ++i) { CPDF_Object* pObj = (CPDF_Object*)new_obj_array[i]; - if (CPDF_Reference* pRef = pObj->AsReference()) { + int32_t type = pObj->GetType(); + if (type == PDFOBJ_REFERENCE) { + CPDF_Reference* pRef = (CPDF_Reference*)pObj; FX_DWORD dwNum = pRef->GetRefObjNum(); - if (!m_objnum_array.Find(dwNum)) + if (!m_objnum_array.Find(dwNum)) { ret_array.Add(pObj); + } } else { ret_array.Add(pObj); } @@ -3367,37 +3380,37 @@ FX_BOOL CPDF_DataAvail::CheckRoot(IFX_DownloadHints* pHints) { m_docStatus = PDF_DATAAVAIL_ERROR; return FALSE; } - CPDF_Reference* pRef = ToReference(pDict->GetElement(FX_BSTRC("Pages"))); - if (!pRef) { + CPDF_Reference* pRef = (CPDF_Reference*)pDict->GetElement(FX_BSTRC("Pages")); + if (pRef == NULL || pRef->GetType() != PDFOBJ_REFERENCE) { m_docStatus = PDF_DATAAVAIL_ERROR; return FALSE; } - m_PagesObjNum = pRef->GetRefObjNum(); CPDF_Reference* pAcroFormRef = - ToReference(m_pRoot->GetDict()->GetElement(FX_BSTRC("AcroForm"))); - if (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 { - m_docStatus = - m_bHaveAcroForm ? PDF_DATAAVAIL_ACROFORM : PDF_DATAAVAIL_PAGETREE; + 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 = - ToReference(pRoot ? pRoot->GetElement(FX_BSTRC("Pages")) : nullptr); - if (!pRef) { + pRoot ? (CPDF_Reference*)pRoot->GetElement(FX_BSTRC("Pages")) : NULL; + if (pRef == NULL || pRef->GetType() != PDFOBJ_REFERENCE) { m_docStatus = PDF_DATAAVAIL_ERROR; return FALSE; } - m_PagesObjNum = pRef->GetRefObjNum(); m_pCurrentParser = (CPDF_Parser*)m_pDocument->GetParser(); m_docStatus = PDF_DATAAVAIL_PAGETREE; @@ -3430,9 +3443,12 @@ FX_BOOL CPDF_DataAvail::CheckPage(IFX_DownloadHints* pHints) { CPDF_Array* pArray = pObj->GetArray(); if (pArray) { int32_t iSize = pArray->GetCount(); + CPDF_Object* pItem = NULL; for (int32_t j = 0; j < iSize; ++j) { - if (CPDF_Reference* pRef = ToReference(pArray->GetElement(j))) - UnavailObjList.Add(pRef->GetRefObjNum()); + pItem = pArray->GetElement(j); + if (pItem && pItem->GetType() == PDFOBJ_REFERENCE) { + UnavailObjList.Add(((CPDF_Reference*)pItem)->GetRefObjNum()); + } } } } @@ -3487,14 +3503,17 @@ FX_BOOL CPDF_DataAvail::GetPageKids(CPDF_Parser* pParser, CPDF_Object* pPages) { return TRUE; } switch (pKids->GetType()) { - case PDFOBJ_REFERENCE: - m_PageObjList.Add(pKids->AsReference()->GetRefObjNum()); - break; + case PDFOBJ_REFERENCE: { + CPDF_Reference* pKid = (CPDF_Reference*)pKids; + m_PageObjList.Add(pKid->GetRefObjNum()); + } break; case PDFOBJ_ARRAY: { CPDF_Array* pKidsArray = pKids->AsArray(); for (FX_DWORD i = 0; i < pKidsArray->GetCount(); ++i) { - if (CPDF_Reference* pRef = ToReference(pKidsArray->GetElement(i))) - m_PageObjList.Add(pRef->GetRefObjNum()); + CPDF_Object* pKid = (CPDF_Object*)pKidsArray->GetElement(i); + if (pKid && pKid->GetType() == PDFOBJ_REFERENCE) { + m_PageObjList.Add(((CPDF_Reference*)pKid)->GetRefObjNum()); + } } } break; default: @@ -3993,7 +4012,7 @@ FX_BOOL CPDF_DataAvail::CheckTrailer(IFX_DownloadHints* pHints) { CPDF_Dictionary* pTrailerDict = pTrailer->GetDict(); CPDF_Object* pEncrypt = pTrailerDict->GetElement("Encrypt"); - if (ToReference(pEncrypt)) { + if (pEncrypt && pEncrypt->GetType() == PDFOBJ_REFERENCE) { m_docStatus = PDF_DATAAVAIL_LOADALLFILE; return TRUE; } @@ -4072,13 +4091,13 @@ FX_BOOL CPDF_DataAvail::CheckArrayPageNode(FX_DWORD dwPageNo, pPageNode->m_type = PDF_PAGENODE_PAGES; for (FX_DWORD i = 0; i < pArray->GetCount(); ++i) { - CPDF_Reference* pKid = ToReference(pArray->GetElement(i)); - if (!pKid) + CPDF_Object* pKid = (CPDF_Object*)pArray->GetElement(i); + if (!pKid || pKid->GetType() != PDFOBJ_REFERENCE) { continue; - + } CPDF_PageNode* pNode = new CPDF_PageNode(); pPageNode->m_childNode.Add(pNode); - pNode->m_dwPageNo = pKid->GetRefObjNum(); + pNode->m_dwPageNo = ((CPDF_Reference*)pKid)->GetRefObjNum(); } pPages->Release(); return TRUE; @@ -4122,7 +4141,7 @@ FX_BOOL CPDF_DataAvail::CheckUnkownPageNode(FX_DWORD dwPageNo, } switch (pKids->GetType()) { case PDFOBJ_REFERENCE: { - CPDF_Reference* pKid = pKids->AsReference(); + CPDF_Reference* pKid = (CPDF_Reference*)pKids; CPDF_PageNode* pNode = new CPDF_PageNode(); pPageNode->m_childNode.Add(pNode); pNode->m_dwPageNo = pKid->GetRefObjNum(); @@ -4130,13 +4149,13 @@ FX_BOOL CPDF_DataAvail::CheckUnkownPageNode(FX_DWORD dwPageNo, case PDFOBJ_ARRAY: { CPDF_Array* pKidsArray = pKids->AsArray(); for (FX_DWORD i = 0; i < pKidsArray->GetCount(); ++i) { - CPDF_Reference* pKid = ToReference(pKidsArray->GetElement(i)); - if (!pKid) + CPDF_Object* pKid = (CPDF_Object*)pKidsArray->GetElement(i); + if (!pKid || pKid->GetType() != PDFOBJ_REFERENCE) { continue; - + } CPDF_PageNode* pNode = new CPDF_PageNode(); pPageNode->m_childNode.Add(pNode); - pNode->m_dwPageNo = pKid->GetRefObjNum(); + pNode->m_dwPageNo = ((CPDF_Reference*)pKid)->GetRefObjNum(); } } break; default: |