// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
-#include "../../../include/fpdfapi/fpdf_parser.h"
+#include <utility>
+#include <vector>
+
#include "../../../include/fpdfapi/fpdf_module.h"
#include "../../../include/fpdfapi/fpdf_page.h"
+#include "../../../include/fpdfapi/fpdf_parser.h"
+#include "../../../include/fxcrt/fx_safe_types.h"
#include "../fpdf_page/pageint.h"
-#include <limits.h>
-#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"));
}
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);
}
return 0;
}
+
CPDF_Parser::CPDF_Parser()
{
m_pDocument = NULL;
m_dwFirstPageNo = 0;
m_dwXrefStartObjNum = 0;
m_bOwnFileRead = TRUE;
+ m_FileVersion = 0;
m_bForceUseSecurityHandler = FALSE;
}
CPDF_Parser::~CPDF_Parser()
}
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';
+ if (!m_Syntax.GetCharAt(5, ch)) {
+ return PDFPARSE_ERROR_FORMAT;
+ }
+ if (ch >= '0' && ch <= '9') {
+ m_FileVersion = (ch - '0') * 10;
+ }
+ if (!m_Syntax.GetCharAt(7, ch)) {
+ return PDFPARSE_ERROR_FORMAT;
+ }
+ if (ch >= '0' && ch <= '9') {
+ m_FileVersion += ch - '0';
+ }
+ if (m_Syntax.m_FileLen < m_Syntax.m_HeaderOffset + 9) {
+ return PDFPARSE_ERROR_FORMAT;
+ }
m_Syntax.RestorePos(m_Syntax.m_FileLen - m_Syntax.m_HeaderOffset - 9);
if (!bReParse) {
- m_pDocument = FX_NEW CPDF_Document(this);
+ m_pDocument = new CPDF_Document(this);
}
FX_BOOL bXRefRebuilt = FALSE;
if (m_Syntax.SearchWord(FX_BSTRC("startxref"), TRUE, FALSE, 4096)) {
}
FX_INT32 status = 0;
FX_INT32 inside_index = 0;
- FX_DWORD objnum, gennum;
+ FX_DWORD objnum = 0, gennum = 0;
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 start_pos = 0, start_pos1 = 0;
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);
}
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') {
+ if (PDF_CharType[byte] == 'W') {
status = 1;
}
if (byte <= '9' && byte >= '0') {
}
break;
case 1:
- if (_PDF_CharType[byte] == 'W') {
+ if (PDF_CharType[byte] == 'W') {
break;
} else if (byte <= '9' && byte >= '0') {
start_pos = pos + i;
if (byte <= '9' && byte >= '0') {
objnum = objnum * 10 + byte - '0';
break;
- } else if (_PDF_CharType[byte] == 'W') {
+ } else if (PDF_CharType[byte] == 'W') {
status = 3;
} else {
--i;
start_pos1 = pos + i;
status = 4;
gennum = byte - '0';
- } else if (_PDF_CharType[byte] == 'W') {
+ } else if (PDF_CharType[byte] == 'W') {
break;
} else if (byte == 't') {
status = 7;
if (byte <= '9' && byte >= '0') {
gennum = gennum * 10 + byte - '0';
break;
- } else if (_PDF_CharType[byte] == 'W') {
+ } else if (PDF_CharType[byte] == 'W') {
status = 5;
} else {
--i;
if (byte == 'o') {
status = 6;
inside_index = 1;
- } else if (_PDF_CharType[byte] == 'W') {
+ } else if (PDF_CharType[byte] == 'W') {
break;
} else if (byte <= '9' && byte >= '0') {
objnum = gennum;
}
break;
case 3:
- if (_PDF_CharType[byte] == 'W' || _PDF_CharType[byte] == 'D') {
+ if (PDF_CharType[byte] == 'W' || PDF_CharType[byte] == 'D') {
if (objnum > 0x1000000) {
status = 0;
break;
break;
case 7:
if (inside_index == 7) {
- if (_PDF_CharType[byte] == 'W' || _PDF_CharType[byte] == 'D') {
+ 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);
} else {
pObj->Release();
}
- bInUpdate = TRUE;
}
}
}
status = 0;
break;
case 13:
- if (_PDF_CharType[byte] == 'D' || _PDF_CharType[byte] == 'W') {
+ if (PDF_CharType[byte] == 'D' || PDF_CharType[byte] == 'W') {
--i;
status = 0;
}
break;
case 14:
- if (_PDF_CharType[byte] == 'W') {
+ if (PDF_CharType[byte] == 'W') {
status = 0;
} else if (byte == '%' || byte == '(' || byte == '<' || byte == '\\') {
status = 0;
return FALSE;
}
if (m_pDocument) {
- m_pDocument->InsertIndirectObject(pStream->m_ObjNum, pStream);
+ CPDF_Dictionary * pDict = m_pDocument->GetRoot();
+ if (!pDict || pDict->GetObjNum() != pStream->m_ObjNum) {
+ m_pDocument->InsertIndirectObject(pStream->m_ObjNum, pStream);
+ } else {
+ if (pStream->GetType() == PDFOBJ_STREAM) {
+ pStream->Release();
+ }
+ return FALSE;
+ }
}
if (pStream->GetType() != PDFOBJ_STREAM) {
return FALSE;
} else {
m_Trailers.Add((CPDF_Dictionary*)pStream->GetDict()->Clone());
}
- CFX_DWordArray IndexArray, WidthArray;
- FX_DWORD nSegs = 0;
+ std::vector<std::pair<FX_INT32, FX_INT32> > arrIndex;
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));
+ if (pArray) {
+ FX_DWORD nPairSize = pArray->GetCount() / 2;
+ for (FX_DWORD i = 0; i < nPairSize; i++) {
+ CPDF_Object* pStartNumObj = pArray->GetElement(i * 2);
+ CPDF_Object* pCountObj = pArray->GetElement(i * 2 + 1);
+ if (pStartNumObj && pStartNumObj->GetType() == PDFOBJ_NUMBER
+ && pCountObj && pCountObj->GetType() == PDFOBJ_NUMBER) {
+ int nStartNum = pStartNumObj->GetInteger();
+ int nCount = pCountObj->GetInteger();
+ if (nStartNum >= 0 && nCount > 0) {
+ arrIndex.push_back(std::make_pair(nStartNum, nCount));
+ }
+ }
}
- nSegs = pArray->GetCount() / 2;
+ }
+ if (arrIndex.size() == 0) {
+ arrIndex.push_back(std::make_pair(0, size));
}
pArray = pStream->GetDict()->GetArray(FX_BSTRC("W"));
if (pArray == NULL) {
pStream->Release();
return FALSE;
}
- FX_DWORD totalwidth = 0;
- FX_DWORD i;
- for (i = 0; i < pArray->GetCount(); i ++) {
+ CFX_DWordArray WidthArray;
+ FX_SAFE_DWORD dwAccWidth = 0;
+ for (FX_DWORD i = 0; i < pArray->GetCount(); i ++) {
WidthArray.Add(pArray->GetInteger(i));
- if (totalwidth + WidthArray[i] < totalwidth) {
- pStream->Release();
- return FALSE;
- }
- totalwidth += WidthArray[i];
+ dwAccWidth += WidthArray[i];
}
- if (totalwidth == 0 || WidthArray.GetSize() < 3) {
+ if (!dwAccWidth.IsValid() || WidthArray.GetSize() < 3) {
pStream->Release();
return FALSE;
}
+ FX_DWORD totalWidth = dwAccWidth.ValueOrDie();
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];
+ for (FX_DWORD i = 0; i < arrIndex.size(); i ++) {
+ FX_INT32 startnum = arrIndex[i].first;
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) {
+ m_dwXrefStartObjNum = pdfium::base::checked_cast<FX_DWORD, FX_INT32> (startnum);
+ FX_DWORD count = pdfium::base::checked_cast<FX_DWORD, FX_INT32> (arrIndex[i].second);
+ FX_SAFE_DWORD dwCaculatedSize = segindex;
+ dwCaculatedSize += count;
+ dwCaculatedSize *= totalWidth;
+ if (!dwCaculatedSize.IsValid() || dwCaculatedSize.ValueOrDie() > 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()) {
+ FX_LPCBYTE segstart = pData + segindex * totalWidth;
+ FX_SAFE_DWORD dwMaxObjNum = startnum;
+ dwMaxObjNum += count;
+ FX_DWORD dwV5Size = pdfium::base::checked_cast<FX_DWORD, FX_INT32> (m_V5Type.GetSize());
+ if (!dwMaxObjNum.IsValid() || dwMaxObjNum.ValueOrDie() > dwV5Size) {
continue;
}
for (FX_DWORD j = 0; j < count; j ++) {
FX_INT32 type = 1;
- FX_LPCBYTE entrystart = segstart + j * totalwidth;
+ FX_LPCBYTE entrystart = segstart + j * totalWidth;
if (WidthArray[0]) {
type = _GetVarInt(entrystart, WidthArray[0]);
}
}
FX_DWORD CPDF_Parser::GetRootObjNum()
{
- CPDF_Reference* pRef = m_pTrailer ? (CPDF_Reference*)m_pTrailer->GetElement(FX_BSTRC("Root")) : NULL;
+ CPDF_Object* pRef = m_pTrailer ? m_pTrailer->GetElement(FX_BSTRC("Root")) : NULL;
if (pRef == NULL || pRef->GetType() != PDFOBJ_REFERENCE) {
return 0;
}
- return pRef->GetRefObjNum();
+ return ((CPDF_Reference*) pRef)->GetRefObjNum();
}
FX_DWORD CPDF_Parser::GetInfoObjNum()
{
- CPDF_Reference* pRef = m_pTrailer ? (CPDF_Reference*)m_pTrailer->GetElement(FX_BSTRC("Info")) : NULL;
+ CPDF_Object* pRef = m_pTrailer ? m_pTrailer->GetElement(FX_BSTRC("Info")) : NULL;
if (pRef == NULL || pRef->GetType() != PDFOBJ_REFERENCE) {
return 0;
}
- return pRef->GetRefObjNum();
+ return ((CPDF_Reference*) pRef)->GetRefObjNum();
}
FX_BOOL CPDF_Parser::IsFormStream(FX_DWORD objnum, FX_BOOL& bForm)
{
FX_INT32 offset = pObjStream->GetDict()->GetInteger(FX_BSTRC("First"));
CPDF_SyntaxParser syntax;
CFX_SmartPointer<IFX_FileStream> file(FX_CreateMemoryStream((FX_LPBYTE)pObjStream->GetData(), (size_t)pObjStream->GetSize(), FALSE));
- syntax.InitParser((IFX_FileStream*)file, 0);
+ syntax.InitParser(file.Get(), 0);
CPDF_Object* pRet = NULL;
while (n) {
FX_DWORD thisnum = syntax.GetDirectNum();
FX_DWORD thisoff = syntax.GetDirectNum();
if (thisnum == objnum) {
syntax.RestorePos(offset + thisoff);
- pRet = syntax.GetObject(pObjList, 0, 0, 0, pContext);
+ pRet = syntax.GetObject(pObjList, 0, 0, pContext);
break;
}
n --;
if (m_ObjectStreamMap.Lookup((void*)(FX_UINTPTR)objnum, (void*&)pStreamAcc)) {
return pStreamAcc;
}
- const CPDF_Stream* pStream = (CPDF_Stream*)m_pDocument->GetIndirectObject(objnum);
+ const CPDF_Stream* pStream = m_pDocument ? (CPDF_Stream*)m_pDocument->GetIndirectObject(objnum) : NULL;
if (pStream == NULL || pStream->GetType() != PDFOBJ_STREAM) {
return NULL;
}
- pStreamAcc = FX_NEW CPDF_StreamAcc;
+ pStreamAcc = new CPDF_StreamAcc;
pStreamAcc->LoadAllData(pStream);
m_ObjectStreamMap.SetAt((void*)(FX_UINTPTR)objnum, pStreamAcc);
return pStreamAcc;
FX_LPCBYTE pData = pObjStream->GetData();
FX_DWORD totalsize = pObjStream->GetSize();
CFX_SmartPointer<IFX_FileStream> file(FX_CreateMemoryStream((FX_LPBYTE)pData, (size_t)totalsize, FALSE));
- syntax.InitParser((IFX_FileStream*)file, 0);
+ syntax.InitParser(file.Get(), 0);
while (n) {
FX_DWORD thisnum = syntax.GetDirectNum();
FX_DWORD thisoff = syntax.GetDirectNum();
if (n == 1) {
size = totalsize - (thisoff + offset);
} else {
- FX_DWORD nextnum = syntax.GetDirectNum();
+ syntax.GetDirectNum(); // Skip nextnum.
FX_DWORD nextoff = syntax.GetDirectNum();
size = nextoff - thisoff;
}
m_Syntax.RestorePos(SavedPos);
return;
}
- FX_DWORD real_objnum = FXSYS_atoi(word);
- if (real_objnum && real_objnum != objnum) {
+ FX_DWORD parser_objnum = FXSYS_atoi(word);
+ if (parser_objnum && parser_objnum != objnum) {
m_Syntax.RestorePos(SavedPos);
return;
}
}
FX_FILESIZE objOffset = m_Syntax.SavePos();
objOffset -= word.GetLength();
- FX_DWORD real_objnum = FXSYS_atoi(word);
- if (objnum && real_objnum != objnum) {
+ FX_DWORD parser_objnum = FXSYS_atoi(word);
+ if (objnum && parser_objnum != objnum) {
m_Syntax.RestorePos(SavedPos);
return NULL;
}
m_Syntax.RestorePos(SavedPos);
return NULL;
}
- FX_DWORD gennum = FXSYS_atoi(word);
+ FX_DWORD parser_gennum = FXSYS_atoi(word);
if (m_Syntax.GetKeyword() != FX_BSTRC("obj")) {
m_Syntax.RestorePos(SavedPos);
return NULL;
}
- CPDF_Object* pObj = m_Syntax.GetObject(pObjList, objnum, gennum, 0, pContext);
- FX_FILESIZE endOffset = m_Syntax.SavePos();
+ CPDF_Object* pObj = m_Syntax.GetObject(pObjList, objnum, parser_gennum, pContext);
+ m_Syntax.SavePos();
CFX_ByteString bsWord = m_Syntax.GetKeyword();
if (bsWord == FX_BSTRC("endobj")) {
- endOffset = m_Syntax.SavePos();
+ m_Syntax.SavePos();
}
- FX_DWORD objSize = endOffset - objOffset;
m_Syntax.RestorePos(SavedPos);
- if (pObj && !objnum) {
- pObj->m_ObjNum = real_objnum;
+ if (pObj) {
+ if (!objnum) {
+ pObj->m_ObjNum = parser_objnum;
+ }
+ pObj->m_GenNum = parser_gennum;
}
return pObj;
}
m_Syntax.RestorePos(SavedPos);
return NULL;
}
- FX_DWORD real_objnum = FXSYS_atoi(word);
- if (objnum && real_objnum != objnum) {
+ FX_DWORD parser_objnum = FXSYS_atoi(word);
+ if (objnum && parser_objnum != objnum) {
m_Syntax.RestorePos(SavedPos);
return NULL;
}
m_Syntax.RestorePos(SavedPos);
return NULL;
}
- CPDF_Object* pObj = m_Syntax.GetObjectByStrict(pObjList, objnum, gennum, 0, pContext);
+ CPDF_Object* pObj = m_Syntax.GetObjectByStrict(pObjList, objnum, gennum, pContext);
if (pResultPos) {
*pResultPos = m_Syntax.m_Pos;
}
CPDF_Object *pLen = m_pLinearized->GetDict()->GetElement(FX_BSTRC("L"));
if (!pLen) {
m_pLinearized->Release();
+ m_pLinearized = NULL;
return FALSE;
}
if (pLen->GetInteger() != (int)pFileAccess->GetSize()) {
return StartParse(pFileAccess, bReParse, bOwnFileRead);
}
if (!bReParse) {
- m_pDocument = FX_NEW CPDF_Document(this);
+ m_pDocument = new CPDF_Document(this);
}
FX_FILESIZE dwFirstXRefOffset = m_Syntax.SavePos();
FX_BOOL bXRefRebuilt = FALSE;
return FALSE;
}
FX_INT32 xrefsize = GetDirectInteger(m_pTrailer, FX_BSTRC("Size"));
- if (xrefsize == 0) {
- return FALSE;
+ if (xrefsize > 0) {
+ m_CrossRef.SetSize(xrefsize);
+ m_V5Type.SetSize(xrefsize);
}
- m_CrossRef.SetSize(xrefsize);
- m_V5Type.SetSize(xrefsize);
}
FX_DWORD dwRet = SetEncryptHandler();
if (dwRet != PDFPARSE_ERROR_SUCCESS) {
}
}
if (m_pSecurityHandler && m_pSecurityHandler->IsMetadataEncrypted()) {
- CPDF_Reference* pMetadata = (CPDF_Reference*)m_pDocument->GetRoot()->GetElement(FX_BSTRC("Metadata"));
+ CPDF_Object* pMetadata = m_pDocument->GetRoot()->GetElement(FX_BSTRC("Metadata"));
if (pMetadata && pMetadata->GetType() == PDFOBJ_REFERENCE) {
- m_Syntax.m_MetadataObjnum = pMetadata->GetRefObjNum();
+ m_Syntax.m_MetadataObjnum = ((CPDF_Reference*) pMetadata)->GetRefObjNum();
}
}
return PDFPARSE_ERROR_SUCCESS;
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];
+ 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];
+ type = PDF_CharType[ch];
}
m_LastXRefOffset += dwCount;
FX_POSITION pos = m_ObjectStreamMap.GetStartPosition();
m_Syntax.m_MetadataObjnum = dwSaveMetadataObjnum;
return PDFPARSE_ERROR_FORMAT;
}
- FXSYS_qsort(m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_DWORD), _CompareDWord);
+ FXSYS_qsort(m_SortedOffset.GetData(), m_SortedOffset.GetSize(), sizeof(FX_FILESIZE), _CompareFileSize);
m_Syntax.m_MetadataObjnum = dwSaveMetadataObjnum;
return PDFPARSE_ERROR_SUCCESS;
}
+
+// static
+int CPDF_SyntaxParser::s_CurrentRecursionDepth = 0;
+
CPDF_SyntaxParser::CPDF_SyntaxParser()
{
m_pFileAccess = NULL;
m_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 (!GetNextChar(ch)) {
return;
}
- FX_BYTE type = _PDF_CharType[ch];
+ FX_BYTE type = PDF_CharType[ch];
while (1) {
while (type == 'W') {
if (!GetNextChar(ch)) {
return;
}
- type = _PDF_CharType[ch];
+ type = PDF_CharType[ch];
}
if (ch != '%') {
break;
break;
}
}
- type = _PDF_CharType[ch];
+ type = PDF_CharType[ch];
}
if (type == 'D') {
m_bIsNumber = FALSE;
if (!GetNextChar(ch)) {
return;
}
- type = _PDF_CharType[ch];
+ type = PDF_CharType[ch];
if (type != 'R' && type != 'N') {
m_Pos --;
return;
if (!GetNextChar(ch)) {
return;
}
- type = _PDF_CharType[ch];
+ type = PDF_CharType[ch];
if (type == 'D' || type == 'W') {
m_Pos --;
break;
if (!GetNextChar(ch)) {
return;
}
- FX_BYTE type = _PDF_CharType[ch];
+ FX_BYTE type = PDF_CharType[ch];
while (1) {
while (type == 'W') {
m_dwWordPos = m_Pos;
if (!GetNextChar(ch)) {
return;
}
- type = _PDF_CharType[ch];
+ type = PDF_CharType[ch];
}
if (ch != '%') {
break;
break;
}
}
- type = _PDF_CharType[ch];
+ type = PDF_CharType[ch];
}
m_Pos --;
}
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)
+CPDF_Object* CPDF_SyntaxParser::GetObject(CPDF_IndirectObjects* pObjList, FX_DWORD objnum, FX_DWORD gennum, PARSE_CONTEXT* pContext, FX_BOOL bDecrypt)
{
- if (level > _PARSER_OBJECT_LEVLE_) {
+ CFX_AutoRestorer<int> restorer(&s_CurrentRecursionDepth);
+ if (++s_CurrentRecursionDepth > kParserMaxRecursionDepth) {
return NULL;
}
FX_FILESIZE SavedPos = m_Pos;
}
return NULL;
}
- FX_FILESIZE wordOffset = m_Pos - word.GetLength();
if (bIsNumber) {
FX_FILESIZE SavedPos = m_Pos;
CFX_ByteString nextword = GetNextWord(bIsNumber);
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);
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);
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);
+ CPDF_Object* pObj = GetObject(pObjList, objnum, gennum);
if (pObj == NULL) {
return pArray;
}
return pRet;
}
if (word == FX_BSTRC("<<")) {
- FX_FILESIZE saveDictOffset = m_Pos - 2;
- FX_DWORD dwDictSize = 0;
if (bTypeOnly) {
return (CPDF_Object*)PDFOBJ_DICTIONARY;
}
}
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 == FX_BSTRC("/Contents")) {
dwSignValuePos = m_Pos;
}
- CPDF_Object* pObj = GetObject(pObjList, objnum, gennum, level + 1);
+ CPDF_Object* pObj = GetObject(pObjList, objnum, gennum);
if (pObj == NULL) {
continue;
}
- if (key.GetLength() == 1) {
- pDict->SetAt(CFX_ByteStringC(((FX_LPCSTR)key) + 1, key.GetLength() - 1), pObj);
- } else {
+ if (key.GetLength() >= 1) {
if (nKeys < 32) {
- pDict->SetAt(CFX_ByteStringC(((FX_LPCSTR)key) + 1, key.GetLength() - 1), pObj);
+ pDict->SetAt(CFX_ByteStringC(key.c_str() + 1, key.GetLength() - 1), pObj);
} else {
- pDict->AddValue(CFX_ByteStringC(((FX_LPCSTR)key) + 1, key.GetLength() - 1), pObj);
+ pDict->AddValue(CFX_ByteStringC(key.c_str() + 1, key.GetLength() - 1), pObj);
}
}
}
if (IsSignatureDict(pDict)) {
FX_FILESIZE dwSavePos = m_Pos;
m_Pos = dwSignValuePos;
- CPDF_Object* pObj = GetObject(pObjList, objnum, gennum, level + 1, NULL, FALSE);
+ CPDF_Object* pObj = GetObject(pObjList, objnum, gennum, NULL, FALSE);
pDict->SetAt(FX_BSTRC("Contents"), pObj);
m_Pos = dwSavePos;
}
}
return NULL;
}
-CPDF_Object* CPDF_SyntaxParser::GetObjectByStrict(CPDF_IndirectObjects* pObjList, FX_DWORD objnum, FX_DWORD gennum,
- FX_INT32 level, struct PARSE_CONTEXT* pContext)
+CPDF_Object* CPDF_SyntaxParser::GetObjectByStrict(CPDF_IndirectObjects* pObjList, FX_DWORD objnum, FX_DWORD gennum, struct PARSE_CONTEXT* pContext)
{
- if (level > _PARSER_OBJECT_LEVLE_) {
+ CFX_AutoRestorer<int> restorer(&s_CurrentRecursionDepth);
+ if (++s_CurrentRecursionDepth > kParserMaxRecursionDepth) {
return NULL;
}
FX_FILESIZE SavedPos = m_Pos;
}
CPDF_Array* pArray = CPDF_Array::Create();
while (1) {
- CPDF_Object* pObj = GetObject(pObjList, objnum, gennum, level + 1);
+ CPDF_Object* pObj = GetObject(pObjList, objnum, gennum);
if (pObj == NULL) {
if (m_WordBuffer[0] == ']') {
return pArray;
}
- if (pArray)
+ if (pArray) {
pArray->Release();
+ }
return NULL;
}
pArray->Add(pObj);
FX_FILESIZE SavedPos = m_Pos;
CFX_ByteString key = GetNextWord(bIsNumber);
if (key.IsEmpty()) {
- if (pDict)
+ if (pDict) {
pDict->Release();
+ }
return NULL;
}
if (key == FX_BSTRC(">>")) {
continue;
}
key = PDF_NameDecode(key);
- CPDF_Object* pObj = GetObject(pObjList, objnum, gennum, level + 1);
+ CPDF_Object* pObj = GetObject(pObjList, objnum, gennum);
if (pObj == NULL) {
- if (pDict)
+ if (pDict) {
pDict->Release();
+ }
FX_BYTE ch;
while (1) {
if (!GetNextChar(ch)) {
}
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 (key.GetLength() > 1) {
+ pDict->AddValue(CFX_ByteStringC(key.c_str() + 1, key.GetLength() - 1), pObj);
+ }
}
if (pContext) {
pContext->m_DictEnd = m_Pos;
if (pStream) {
return pStream;
}
- if (pDict)
+ if (pDict) {
pDict->Release();
+ }
return NULL;
} else {
m_Pos = SavedPos;
FX_DWORD objnum, FX_DWORD gennum)
{
CPDF_Object* pLenObj = pDict->GetElement(FX_BSTRC("Length"));
- FX_DWORD len = 0;
+ FX_FILESIZE 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;
- }
+ len = pLenObj->GetInteger();
}
+
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;
+ pdfium::base::CheckedNumeric<FX_FILESIZE> pos = m_Pos;
+ pos += len;
+ if (pos.IsValid() && pos.ValueOrDie() < m_FileLen) {
+ m_Pos = pos.ValueOrDie();
+ }
GetNextWord();
if (m_WordSize < 9 || FXSYS_memcmp32(m_WordBuffer, "endstream", 9)) {
m_Pos = StreamStartPos;
}
}
}
+ m_Pos = StreamStartPos;
}
- 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;
len = dest_buf.GetSize();
dest_buf.DetachBuffer();
}
- pStream = FX_NEW CPDF_Stream(pData, len, pDict);
-#endif
+ pStream = new CPDF_Stream(pData, len, pDict);
if (pContext) {
pContext->m_DataEnd = pContext->m_DataStart + len;
}
}
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_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';
+ 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];
+ 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];
+ FX_BYTE type = PDF_CharType[ch];
if (type == 'N' || type == 'R') {
return FALSE;
}
if (!bForward) {
offset = taglen - 1;
}
- FX_LPCBYTE tag_data = tag;
+ FX_LPCBYTE tag_data = tag.GetPtr();
FX_BYTE byte;
while (1) {
if (bForward) {
}
}
FX_FILESIZE startpos = bForward ? pos - taglen + 1 : pos;
- if (!bWholeWord || IsWholeWord(startpos, limit, tag, taglen)) {
+ if (!bWholeWord || IsWholeWord(startpos, limit, tag.GetPtr(), taglen)) {
m_Pos = startpos;
return TRUE;
}
}
}
}
+
+class CPDF_DataAvail FX_FINAL : public IPDF_DataAvail
+{
+public:
+ CPDF_DataAvail(IFX_FileAvail* pFileAvail, IFX_FileRead* pFileRead);
+ ~CPDF_DataAvail();
+
+ virtual FX_BOOL IsDocAvail(IFX_DownloadHints* pHints) FX_OVERRIDE;
+
+ virtual void SetDocument(CPDF_Document* pDoc) FX_OVERRIDE;
+
+ virtual FX_BOOL IsPageAvail(int iPage, IFX_DownloadHints* pHints) FX_OVERRIDE;
+
+ virtual FX_INT32 IsFormAvail(IFX_DownloadHints *pHints) FX_OVERRIDE;
+
+ virtual FX_INT32 IsLinearizedPDF() FX_OVERRIDE;
+
+ virtual FX_BOOL IsLinearized() FX_OVERRIDE
+ {
+ return m_bLinearized;
+ }
+
+ virtual void GetLinearizedMainXRefInfo(FX_FILESIZE *pPos, FX_DWORD *pSize) FX_OVERRIDE;
+
+protected:
+ static const int kMaxDataAvailRecursionDepth = 64;
+ static int s_CurrentDataAvailRecursionDepth;
+
+ FX_DWORD GetObjectSize(FX_DWORD objnum, FX_FILESIZE& offset);
+ FX_BOOL IsObjectsAvail(CFX_PtrArray& obj_array, FX_BOOL bParsePage, IFX_DownloadHints* pHints, CFX_PtrArray &ret_array);
+ FX_BOOL CheckDocStatus(IFX_DownloadHints *pHints);
+ FX_BOOL CheckHeader(IFX_DownloadHints* pHints);
+ FX_BOOL CheckFirstPage(IFX_DownloadHints *pHints);
+ FX_BOOL CheckEnd(IFX_DownloadHints *pHints);
+ FX_BOOL CheckCrossRef(IFX_DownloadHints* pHints);
+ FX_BOOL CheckCrossRefItem(IFX_DownloadHints *pHints);
+ FX_BOOL CheckTrailer(IFX_DownloadHints* pHints);
+ FX_BOOL CheckRoot(IFX_DownloadHints* pHints);
+ FX_BOOL CheckInfo(IFX_DownloadHints* pHints);
+ FX_BOOL CheckPages(IFX_DownloadHints* pHints);
+ FX_BOOL CheckPage(IFX_DownloadHints* pHints);
+ FX_BOOL CheckResources(IFX_DownloadHints* pHints);
+ FX_BOOL CheckAnnots(IFX_DownloadHints* pHints);
+ FX_BOOL CheckAcroForm(IFX_DownloadHints* pHints);
+ FX_BOOL CheckAcroFormSubObject(IFX_DownloadHints* pHints);
+ FX_BOOL CheckTrailerAppend(IFX_DownloadHints* pHints);
+ FX_BOOL CheckPageStatus(IFX_DownloadHints* pHints);
+ FX_BOOL CheckAllCrossRefStream(IFX_DownloadHints *pHints);
+
+ FX_INT32 CheckCrossRefStream(IFX_DownloadHints *pHints, FX_FILESIZE &xref_offset);
+ FX_BOOL IsLinearizedFile(FX_LPBYTE pData, FX_DWORD dwLen);
+ void SetStartOffset(FX_FILESIZE dwOffset);
+ FX_BOOL GetNextToken(CFX_ByteString &token);
+ FX_BOOL GetNextChar(FX_BYTE &ch);
+ CPDF_Object * ParseIndirectObjectAt(FX_FILESIZE pos, FX_DWORD objnum);
+ CPDF_Object * GetObject(FX_DWORD objnum, IFX_DownloadHints* pHints, FX_BOOL *pExistInFile);
+ FX_BOOL GetPageKids(CPDF_Parser *pParser, CPDF_Object *pPages);
+ FX_BOOL PreparePageItem();
+ FX_BOOL LoadPages(IFX_DownloadHints* pHints);
+ FX_BOOL LoadAllXref(IFX_DownloadHints* pHints);
+ FX_BOOL LoadAllFile(IFX_DownloadHints* pHints);
+ FX_BOOL CheckLinearizedData(IFX_DownloadHints* pHints);
+ FX_BOOL CheckFileResources(IFX_DownloadHints* pHints);
+ FX_BOOL CheckPageAnnots(int iPage, IFX_DownloadHints* pHints);
+
+ FX_BOOL CheckLinearizedFirstPage(int iPage, IFX_DownloadHints* pHints);
+ FX_BOOL HaveResourceAncestor(CPDF_Dictionary *pDict);
+ FX_BOOL CheckPage(FX_INT32 iPage, IFX_DownloadHints* pHints);
+ FX_BOOL LoadDocPages(IFX_DownloadHints* pHints);
+ FX_BOOL LoadDocPage(FX_INT32 iPage, IFX_DownloadHints* pHints);
+ FX_BOOL CheckPageNode(CPDF_PageNode &pageNodes, FX_INT32 iPage, FX_INT32 &iCount, IFX_DownloadHints* pHints);
+ FX_BOOL CheckUnkownPageNode(FX_DWORD dwPageNo, CPDF_PageNode *pPageNode, IFX_DownloadHints* pHints);
+ FX_BOOL CheckArrayPageNode(FX_DWORD dwPageNo, CPDF_PageNode *pPageNode, IFX_DownloadHints* pHints);
+ FX_BOOL CheckPageCount(IFX_DownloadHints* pHints);
+ FX_BOOL IsFirstCheck(int iPage);
+ void ResetFirstCheck(int iPage);
+
+ CPDF_Parser m_parser;
+
+ CPDF_SyntaxParser m_syntaxParser;
+
+ CPDF_Object *m_pRoot;
+
+ FX_DWORD m_dwRootObjNum;
+
+ FX_DWORD m_dwInfoObjNum;
+
+ CPDF_Object *m_pLinearized;
+
+ CPDF_Object *m_pTrailer;
+
+ FX_BOOL m_bDocAvail;
+
+ FX_FILESIZE m_dwHeaderOffset;
+
+ FX_FILESIZE m_dwLastXRefOffset;
+
+ FX_FILESIZE m_dwXRefOffset;
+
+ FX_FILESIZE m_dwTrailerOffset;
+
+ FX_FILESIZE m_dwCurrentOffset;
+
+ PDF_DATAAVAIL_STATUS m_docStatus;
+
+ FX_FILESIZE m_dwFileLen;
+
+ CPDF_Document* m_pDocument;
+
+ CPDF_SortObjNumArray m_objnum_array;
+
+ CFX_PtrArray m_objs_array;
+
+ FX_FILESIZE m_Pos;
+
+ FX_FILESIZE m_bufferOffset;
+
+ FX_DWORD m_bufferSize;
+
+ CFX_ByteString m_WordBuf;
+
+ FX_BYTE m_WordBuffer[257];
+
+ FX_DWORD m_WordSize;
+
+ FX_BYTE m_bufferData[512];
+
+ CFX_FileSizeArray m_CrossOffset;
+
+ CFX_DWordArray m_XRefStreamList;
+
+ CFX_DWordArray m_PageObjList;
+
+ FX_DWORD m_PagesObjNum;
+
+ FX_BOOL m_bLinearized;
+
+ FX_DWORD m_dwFirstPageNo;
+
+ FX_BOOL m_bLinearedDataOK;
+
+ FX_BOOL m_bMainXRefLoadTried;
+
+ FX_BOOL m_bMainXRefLoadedOK;
+
+ FX_BOOL m_bPagesTreeLoad;
+
+ FX_BOOL m_bPagesLoad;
+
+ CPDF_Parser * m_pCurrentParser;
+
+ FX_FILESIZE m_dwCurrentXRefSteam;
+
+ FX_BOOL m_bAnnotsLoad;
+
+ FX_BOOL m_bHaveAcroForm;
+
+ FX_DWORD m_dwAcroFormObjNum;
+
+ FX_BOOL m_bAcroFormLoad;
+
+ CPDF_Object * m_pAcroForm;
+
+ CFX_PtrArray m_arrayAcroforms;
+
+ CPDF_Dictionary * m_pPageDict;
+
+ CPDF_Object * m_pPageResource;
+
+ FX_BOOL m_bNeedDownLoadResource;
+
+ FX_BOOL m_bPageLoadedOK;
+
+ FX_BOOL m_bLinearizedFormParamLoad;
+
+ CFX_PtrArray m_PagesArray;
+
+ FX_DWORD m_dwEncryptObjNum;
+
+ FX_FILESIZE m_dwPrevXRefOffset;
+
+ FX_BOOL m_bTotalLoadPageTree;
+
+ FX_BOOL m_bCurPageDictLoadOK;
+
+ CPDF_PageNode m_pageNodes;
+
+ CFX_CMapDWordToDWord * m_pageMapCheckState;
+
+ CFX_CMapDWordToDWord * m_pagesLoadState;
+};
+
+IPDF_DataAvail::IPDF_DataAvail(IFX_FileAvail* pFileAvail, IFX_FileRead* pFileRead) :
+ m_pFileAvail(pFileAvail),
+ m_pFileRead(pFileRead) {
+}
+
+// static
+IPDF_DataAvail* IPDF_DataAvail::Create(IFX_FileAvail* pFileAvail, IFX_FileRead* pFileRead)
+{
+ return new CPDF_DataAvail(pFileAvail, pFileRead);
+}
+
+// static
+int CPDF_DataAvail::s_CurrentDataAvailRecursionDepth = 0;
+
CPDF_DataAvail::CPDF_DataAvail(IFX_FileAvail* pFileAvail, IFX_FileRead* pFileRead)
+ : IPDF_DataAvail(pFileAvail, pFileRead)
{
- m_pFileAvail = pFileAvail;
- m_pFileRead = pFileRead;
m_Pos = 0;
m_dwFileLen = 0;
if (m_pFileRead) {
m_dwPrevXRefOffset = 0;
m_dwLastXRefOffset = 0;
m_bDocAvail = FALSE;
- m_bMainXRefLoad = FALSE;
+ m_bMainXRefLoadTried = FALSE;
m_bDocAvail = FALSE;
m_bLinearized = FALSE;
m_bPagesLoad = FALSE;
CPDF_Reference *pRef = (CPDF_Reference*)pObj;
FX_DWORD dwNum = pRef->GetRefObjNum();
FX_FILESIZE offset;
- FX_DWORD size = GetObjectSize(pRef->GetRefObjNum(), offset);
- if (!size) {
+ FX_DWORD original_size = GetObjectSize(dwNum, offset);
+ pdfium::base::CheckedNumeric<FX_DWORD> size = original_size;
+ if (size.ValueOrDefault(0) == 0 || offset < 0 || offset >= m_dwFileLen) {
+ break;
+ }
+
+ size += offset;
+ size += 512;
+ if (!size.IsValid()) {
break;
}
- 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);
+ if (size.ValueOrDie() > m_dwFileLen) {
+ size = m_dwFileLen - offset;
+ } else {
+ size = original_size + 512;
+ }
+ if (!size.IsValid()) {
+ break;
+ }
+ if (!m_pFileAvail->IsDataAvail(offset, size.ValueOrDie())) {
+ pHints->AddSegment(offset, size.ValueOrDie());
ret_array.Add(pObj);
count++;
} else if (!m_objnum_array.Find(dwNum)) {
}
CPDF_Object* CPDF_DataAvail::GetObject(FX_DWORD objnum, IFX_DownloadHints* pHints, FX_BOOL *pExistInFile)
{
- CPDF_Object *pRet = NULL;
- if (pExistInFile) {
+ CPDF_Object *pRet = NULL;
+ FX_DWORD original_size = 0;
+ FX_FILESIZE offset = 0;
+ CPDF_Parser *pParser = 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;
+ original_size = (FX_DWORD)m_parser.GetObjectSize(objnum);
+ offset = m_parser.GetObjectOffset(objnum);
+ pParser = &m_parser;
+ } else {
+ original_size = GetObjectSize(objnum, offset);
+ pParser = (CPDF_Parser *)(m_pDocument->GetParser());
}
- 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);
+
+ pdfium::base::CheckedNumeric<FX_DWORD> size = original_size;
+ if (size.ValueOrDefault(0) == 0 || offset < 0 || offset >= m_dwFileLen) {
+ if (pExistInFile)
+ *pExistInFile = FALSE;
+
return NULL;
}
- CPDF_Parser *pParser = (CPDF_Parser *)(m_pDocument->GetParser());
- pRet = pParser->ParseIndirectObject(NULL, objnum, NULL);
+
+ size += offset;
+ size += 512;
+ if (!size.IsValid()) {
+ return NULL;
+ }
+
+ if (size.ValueOrDie() > m_dwFileLen) {
+ size = m_dwFileLen - offset;
+ } else {
+ size = original_size + 512;
+ }
+
+ if (!size.IsValid()) {
+ return NULL;
+ }
+
+ if (!m_pFileAvail->IsDataAvail(offset, size.ValueOrDie())) {
+ pHints->AddSegment(offset, size.ValueOrDie());
+ return NULL;
+ }
+
+ if (pParser) {
+ 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;
}
return FALSE;
}
- CPDF_Reference* pRef = (CPDF_Reference*)m_pRoot->GetDict()->GetElement(FX_BSTRC("Pages"));
+ CPDF_Dictionary* pDict = m_pRoot->GetDict();
+ if (!pDict) {
+ m_docStatus = PDF_DATAAVAIL_ERROR;
+ return FALSE;
+ }
+ CPDF_Reference* pRef = (CPDF_Reference*)pDict->GetElement(FX_BSTRC("Pages"));
if (pRef == NULL || pRef->GetType() != PDFOBJ_REFERENCE) {
m_docStatus = PDF_DATAAVAIL_ERROR;
return FALSE;
FX_BOOL CPDF_DataAvail::IsFirstCheck(int iPage)
{
if (NULL == m_pageMapCheckState) {
- m_pageMapCheckState = FX_NEW CFX_CMapDWordToDWord();
+ m_pageMapCheckState = new CFX_CMapDWordToDWord();
}
FX_DWORD dwValue = 0;
if (!m_pageMapCheckState->Lookup(iPage, dwValue)) {
void CPDF_DataAvail::ResetFirstCheck(int iPage)
{
if (NULL == m_pageMapCheckState) {
- m_pageMapCheckState = FX_NEW CFX_CMapDWordToDWord();
+ m_pageMapCheckState = new CFX_CMapDWordToDWord();
}
FX_DWORD dwValue = 1;
if (!m_pageMapCheckState->Lookup(iPage, dwValue)) {
}
FX_BOOL CPDF_DataAvail::CheckPage(IFX_DownloadHints* pHints)
{
- FX_DWORD i = 0;
- FX_DWORD iLen = m_PageObjList.GetSize();
+ FX_DWORD iPageObjs = m_PageObjList.GetSize();
CFX_DWordArray UnavailObjList;
- for (; i < iLen; ++i) {
+ for (FX_DWORD i = 0; i < iPageObjs; ++i) {
FX_DWORD dwPageObjNum = m_PageObjList.GetAt(i);
FX_BOOL bExist = FALSE;
CPDF_Object *pObj = GetObject(dwPageObjNum, pHints, &bExist);
m_PageObjList.Append(UnavailObjList);
return FALSE;
}
- i = 0;
- iLen = m_PagesArray.GetSize();
- for (; i < iLen; ++i) {
+ FX_DWORD iPages = m_PagesArray.GetSize();
+ for (FX_DWORD i = 0; i < iPages; i++) {
CPDF_Object *pPages = (CPDF_Object *)m_PagesArray.GetAt(i);
if (!pPages) {
continue;
}
if (!GetPageKids(m_pCurrentParser, pPages)) {
pPages->Release();
- while (i++ < iLen) {
+ while (++i < iPages) {
pPages = (CPDF_Object *)m_PagesArray.GetAt(i);
pPages->Release();
}
m_PagesArray.RemoveAll();
if (!m_PageObjList.GetSize()) {
m_docStatus = PDF_DATAAVAIL_DONE;
- return TRUE;
}
return TRUE;
}
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());
+ CPDF_Object *pKid = (CPDF_Object *)pKidsArray->GetElement(i);
+ if (pKid && pKid->GetType() == PDFOBJ_REFERENCE) {
+ m_PageObjList.Add(((CPDF_Reference *)pKid)->GetRefObjNum());
+ }
}
}
break;
}
return FALSE;
}
- FX_BOOL bNeedLoad = FALSE;
if (!GetPageKids(m_pCurrentParser, pPages)) {
pPages->Release();
m_docStatus = PDF_DATAAVAIL_ERROR;
}
FX_BOOL CPDF_DataAvail::CheckFirstPage(IFX_DownloadHints *pHints)
{
- FX_DWORD dwFirstPageEndOffset = 0;
CPDF_Dictionary* pDict = m_pLinearized->GetDict();
CPDF_Object *pEndOffSet = pDict ? pDict->GetElement(FX_BSTRC("E")) : NULL;
if (!pEndOffSet) {
if (!bIsNumber) {
return NULL;
}
- FX_DWORD real_objnum = FXSYS_atoi(word);
- if (objnum && real_objnum != objnum) {
+ FX_DWORD parser_objnum = FXSYS_atoi(word);
+ if (objnum && parser_objnum != objnum) {
return NULL;
}
word = m_syntaxParser.GetNextWord(bIsNumber);
FX_BOOL CPDF_DataAvail::IsLinearizedFile(FX_LPBYTE pData, FX_DWORD dwLen)
{
CFX_SmartPointer<IFX_FileStream> file(FX_CreateMemoryStream(pData, (size_t)dwLen, FALSE));
- FX_INT32 offset = GetHeaderOffset((IFX_FileStream*)file);
+ FX_INT32 offset = GetHeaderOffset(file.Get());
if (offset == -1) {
m_docStatus = PDF_DATAAVAIL_ERROR;
return FALSE;
}
m_dwHeaderOffset = offset;
- m_syntaxParser.InitParser((IFX_FileStream*)file, offset);
+ m_syntaxParser.InitParser(file.Get(), 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_BYTE buffer[1024];
m_pFileRead->ReadBlock(buffer, req_pos, dwSize);
CFX_SmartPointer<IFX_FileStream> file(FX_CreateMemoryStream(buffer, (size_t)dwSize, FALSE));
- m_syntaxParser.InitParser((IFX_FileStream*)file, 0);
+ m_syntaxParser.InitParser(file.Get(), 0);
m_syntaxParser.RestorePos(dwSize - 1);
if (m_syntaxParser.SearchWord(FX_BSTRC("startxref"), TRUE, FALSE, dwSize)) {
FX_BOOL bNumber;
pHints->AddSegment(req_pos, dwSize);
return FALSE;
}
-FX_DWORD CPDF_DataAvail::CheckCrossRefStream(IFX_DownloadHints* pHints, FX_FILESIZE &xref_offset)
+FX_INT32 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);
FX_LPBYTE pBuf = buf.GetBuffer();
m_pFileRead->ReadBlock(pBuf, m_dwCurrentXRefSteam, iSize);
CFX_SmartPointer<IFX_FileStream> file(FX_CreateMemoryStream(pBuf, (size_t)iSize, FALSE));
- m_parser.m_Syntax.InitParser((IFX_FileStream*)file, 0);
+ m_parser.m_Syntax.InitParser(file.Get(), 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;
if (!GetNextChar(ch)) {
return FALSE;
}
- FX_BYTE type = _PDF_CharType[ch];
+ FX_BYTE type = PDF_CharType[ch];
while (1) {
while (type == 'W') {
if (!GetNextChar(ch)) {
return FALSE;
}
- type = _PDF_CharType[ch];
+ type = PDF_CharType[ch];
}
if (ch != '%') {
break;
break;
}
}
- type = _PDF_CharType[ch];
+ type = PDF_CharType[ch];
}
if (type == 'D') {
m_WordBuffer[m_WordSize++] = ch;
if (!GetNextChar(ch)) {
return FALSE;
}
- type = _PDF_CharType[ch];
+ type = PDF_CharType[ch];
if (type != 'R' && type != 'N') {
m_Pos --;
CFX_ByteString ret(m_WordBuffer, m_WordSize);
if (!GetNextChar(ch)) {
return FALSE;
}
- type = _PDF_CharType[ch];
+ type = PDF_CharType[ch];
if (type == 'D' || type == 'W') {
m_Pos --;
break;
FX_BOOL CPDF_DataAvail::CheckAllCrossRefStream(IFX_DownloadHints *pHints)
{
FX_FILESIZE xref_offset = 0;
- FX_DWORD dwRet = CheckCrossRefStream(pHints, xref_offset);
- if (dwRet == 1) {
+ FX_INT32 nRet = CheckCrossRefStream(pHints, xref_offset);
+ if (nRet == 1) {
if (!xref_offset) {
m_docStatus = PDF_DATAAVAIL_LOADALLCRSOSSREF;
} else {
m_Pos = xref_offset;
}
return TRUE;
- } else if (dwRet == -1) {
+ } else if (nRet == -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)) {
return FALSE;
}
CFX_SmartPointer<IFX_FileStream> file(FX_CreateMemoryStream(pBuf, (size_t)iSize, FALSE));
- m_syntaxParser.InitParser((IFX_FileStream*)file, 0);
+ m_syntaxParser.InitParser(file.Get(), 0);
CPDF_Object *pTrailer = m_syntaxParser.GetObject(NULL, 0, 0, 0);
if (!pTrailer) {
m_Pos += m_syntaxParser.SavePos();
pHints->AddSegment(m_Pos, iTrailerSize);
return FALSE;
}
+ if (pTrailer->GetType() != PDFOBJ_DICTIONARY) {
+ return FALSE;
+ }
CPDF_Dictionary *pTrailerDict = pTrailer->GetDict();
if (pTrailerDict) {
CPDF_Object *pEncrypt = pTrailerDict->GetElement("Encrypt");
if (!pKid || pKid->GetType() != PDFOBJ_REFERENCE) {
continue;
}
- CPDF_PageNode *pNode = FX_NEW CPDF_PageNode();
+ CPDF_PageNode *pNode = new CPDF_PageNode();
pPageNode->m_childNode.Add(pNode);
pNode->m_dwPageNo = ((CPDF_Reference*)pKid)->GetRefObjNum();
}
switch (pKids->GetType()) {
case PDFOBJ_REFERENCE: {
CPDF_Reference *pKid = (CPDF_Reference *)pKids;
- CPDF_PageNode *pNode = FX_NEW CPDF_PageNode();
+ CPDF_PageNode *pNode = new CPDF_PageNode();
pPageNode->m_childNode.Add(pNode);
pNode->m_dwPageNo = pKid->GetRefObjNum();
}
if (!pKid || pKid->GetType() != PDFOBJ_REFERENCE) {
continue;
}
- CPDF_PageNode *pNode = FX_NEW CPDF_PageNode();
+ CPDF_PageNode *pNode = new CPDF_PageNode();
pPageNode->m_childNode.Add(pNode);
pNode->m_dwPageNo = ((CPDF_Reference*)pKid)->GetRefObjNum();
}
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) {
+ if (iSize <= 0 || iPage >= iSize) {
m_docStatus = PDF_DATAAVAIL_ERROR;
return FALSE;
}
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;
+
+ if (!m_bMainXRefLoadTried) {
+ FX_SAFE_DWORD data_size = m_dwFileLen;
+ data_size -= m_dwLastXRefOffset;
+ if (!data_size.IsValid()) {
+ return FALSE;
+ }
+ if (!m_pFileAvail->IsDataAvail(m_dwLastXRefOffset, data_size.ValueOrDie())) {
+ pHints->AddSegment(m_dwLastXRefOffset, data_size.ValueOrDie());
+ return FALSE;
+ }
+ FX_DWORD dwRet = ((CPDF_Parser *)m_pDocument->GetParser())->LoadLinearizedMainXRefTable();
+ m_bMainXRefLoadTried = TRUE;
+ if (dwRet != PDFPARSE_ERROR_SUCCESS) {
+ return FALSE;
+ }
+ if (!PreparePageItem()) {
+ return FALSE;
}
- m_bMainXRefLoad = TRUE;
+ m_bMainXRefLoadedOK = TRUE;
+ m_bLinearedDataOK = TRUE;
}
- m_bLinearedDataOK = TRUE;
- return TRUE;
+
+ return m_bLinearedDataOK;
}
FX_BOOL CPDF_DataAvail::CheckPageAnnots(FX_INT32 iPage, IFX_DownloadHints* pHints)
{
}
FX_BOOL CPDF_DataAvail::HaveResourceAncestor(CPDF_Dictionary *pDict)
{
+ CFX_AutoRestorer<int> restorer(&s_CurrentDataAvailRecursionDepth);
+ if (++s_CurrentDataAvailRecursionDepth > kMaxDataAvailRecursionDepth) {
+ return FALSE;
+ }
CPDF_Object *pParent = pDict->GetElement("Parent");
if (!pParent) {
return FALSE;
if (!pParentDict) {
return FALSE;
}
- CPDF_Object *pRet = pParentDict->GetElement("Resource");
+ CPDF_Object *pRet = pParentDict->GetElement("Resources");
if (pRet) {
m_pPageResource = pRet;
return TRUE;
- } else {
- return HaveResourceAncestor(pParentDict);
}
+ return HaveResourceAncestor(pParentDict);
}
FX_BOOL CPDF_DataAvail::IsPageAvail(FX_INT32 iPage, IFX_DownloadHints* pHints)
{
m_objnum_array.RemoveAll();
}
if (m_pagesLoadState == NULL) {
- m_pagesLoadState = FX_NEW CFX_CMapDWordToDWord();
+ m_pagesLoadState = new CFX_CMapDWordToDWord();
}
FX_DWORD dwPageLoad = 0;
if (m_pagesLoadState->Lookup(iPage, dwPageLoad) && dwPageLoad != 0) {
}
}
if (m_pPageDict && !m_bNeedDownLoadResource) {
- CPDF_Object *pRes = m_pPageDict->GetElement("Resource");
- if (!pRes) {
+ m_pPageResource = m_pPageDict->GetElement("Resources");
+ if (!m_pPageResource) {
m_bNeedDownLoadResource = HaveResourceAncestor(m_pPageDict);
+ } else {
+ m_bNeedDownLoadResource = TRUE;
}
- m_bNeedDownLoadResource = FALSE;
}
if (m_bNeedDownLoadResource) {
FX_BOOL bRet = CheckResources(pHints);
if (!pAcroForm) {
return PDFFORM_NOTEXIST;
}
- if (!m_bMainXRefLoad && !CheckLinearizedData(pHints)) {
+ if (!CheckLinearizedData(pHints)) {
return PDFFORM_NOTAVAIL;
}
if (!m_objs_array.GetSize()) {
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;
projects / pdfium.git / blobdiff