summaryrefslogtreecommitdiff
path: root/core
diff options
context:
space:
mode:
Diffstat (limited to 'core')
-rw-r--r--core/include/fxcrt/fx_basic.h14
-rw-r--r--core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp483
2 files changed, 226 insertions, 271 deletions
diff --git a/core/include/fxcrt/fx_basic.h b/core/include/fxcrt/fx_basic.h
index 9ed5fbafcf..c5bb570fca 100644
--- a/core/include/fxcrt/fx_basic.h
+++ b/core/include/fxcrt/fx_basic.h
@@ -955,20 +955,6 @@ struct ReleaseDeleter {
inline void operator()(T* ptr) const { ptr->Release(); }
};
-// TODO(thestig) Remove in favor of nonstd::unique_ptr.
-template <class T>
-class CFX_SmartPointer {
- public:
- CFX_SmartPointer(T* pObj) : m_pObj(pObj) {}
- ~CFX_SmartPointer() { m_pObj->Release(); }
- T* Get(void) { return m_pObj; }
- T& operator*(void) { return *m_pObj; }
- T* operator->(void) { return m_pObj; }
-
- protected:
- T* m_pObj;
-};
-
#define FX_DATALIST_LENGTH 1024
template <size_t unit>
class CFX_SortListArray {
diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
index c9d4f142b5..a36850bc2e 100644
--- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
+++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_parser.cpp
@@ -17,6 +17,12 @@
namespace {
+struct SearchTagRecord {
+ const uint8_t* m_pTag;
+ FX_DWORD m_Len;
+ FX_DWORD m_Offset;
+};
+
int CompareFileSize(const void* p1, const void* p2) {
return *(FX_FILESIZE*)p1 - *(FX_FILESIZE*)p2;
}
@@ -59,8 +65,21 @@ FX_DWORD GetVarInt(const uint8_t* p, int32_t n) {
return result;
}
+int32_t GetStreamNCount(CPDF_StreamAcc* pObjStream) {
+ return pObjStream->GetDict()->GetInteger(FX_BSTRC("N"));
+}
+
+int32_t GetStreamFirst(CPDF_StreamAcc* pObjStream) {
+ return pObjStream->GetDict()->GetInteger(FX_BSTRC("First"));
+}
+
} // namespace
+// TODO(thestig) Using unique_ptr with ReleaseDeleter is still not ideal.
+// Come up or wait for something better.
+using ScopedFileStream =
+ nonstd::unique_ptr<IFX_FileStream, ReleaseDeleter<IFX_FileStream>>;
+
FX_BOOL IsSignatureDict(const CPDF_Dictionary* pDict) {
CPDF_Object* pType = pDict->GetElementValue(FX_BSTRC("Type"));
if (!pType) {
@@ -361,27 +380,26 @@ FX_BOOL CPDF_Parser::LoadAllCrossRefV4(FX_FILESIZE xrefpos) {
while (xrefpos) {
CrossRefList.InsertAt(0, xrefpos);
LoadCrossRefV4(xrefpos, 0, TRUE, FALSE);
- CPDF_Dictionary* pDict = LoadTrailerV4();
- if (pDict == NULL) {
+ nonstd::unique_ptr<CPDF_Dictionary, ReleaseDeleter<CPDF_Dictionary>> pDict(
+ LoadTrailerV4());
+ if (!pDict)
return FALSE;
- }
- if (!CheckDirectType(pDict, FX_BSTRC("Prev"), PDFOBJ_NUMBER)) {
- pDict->Release();
+
+ if (!CheckDirectType(pDict.get(), FX_BSTRC("Prev"), PDFOBJ_NUMBER))
return FALSE;
- }
- newxrefpos = GetDirectInteger(pDict, FX_BSTRC("Prev"));
- if (newxrefpos == xrefpos) {
- pDict->Release();
+
+ newxrefpos = GetDirectInteger(pDict.get(), FX_BSTRC("Prev"));
+ if (newxrefpos == xrefpos)
return FALSE;
- }
+
xrefpos = newxrefpos;
XRefStreamList.InsertAt(0, pDict->GetInteger(FX_BSTRC("XRefStm")));
- m_Trailers.Add(pDict);
+ m_Trailers.Add(pDict.release());
}
- for (int32_t i = 0; i < CrossRefList.GetSize(); i++)
- if (!LoadCrossRefV4(CrossRefList[i], XRefStreamList[i], FALSE, i == 0)) {
+ for (int32_t i = 0; i < CrossRefList.GetSize(); i++) {
+ if (!LoadCrossRefV4(CrossRefList[i], XRefStreamList[i], FALSE, i == 0))
return FALSE;
- }
+ }
return TRUE;
}
FX_BOOL CPDF_Parser::LoadLinearizedAllCrossRefV4(FX_FILESIZE xrefpos,
@@ -1197,45 +1215,42 @@ FX_BOOL CPDF_Parser::IsFormStream(FX_DWORD objnum, FX_BOOL& bForm) {
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 (objnum >= (FX_DWORD)m_CrossRef.GetSize())
+ return nullptr;
+
if (m_V5Type[objnum] == 1 || m_V5Type[objnum] == 255) {
FX_FILESIZE pos = m_CrossRef[objnum];
- if (pos <= 0) {
- return NULL;
- }
+ if (pos <= 0)
+ return nullptr;
return ParseIndirectObjectAt(pObjList, pos, objnum, pContext);
}
- if (m_V5Type[objnum] == 2) {
- CPDF_StreamAcc* pObjStream = GetObjectStream((FX_DWORD)m_CrossRef[objnum]);
- if (pObjStream == NULL) {
- return NULL;
- }
- int32_t n = pObjStream->GetDict()->GetInteger(FX_BSTRC("N"));
- int32_t offset = pObjStream->GetDict()->GetInteger(FX_BSTRC("First"));
- CPDF_SyntaxParser syntax;
- CFX_SmartPointer<IFX_FileStream> file(FX_CreateMemoryStream(
- (uint8_t*)pObjStream->GetData(), (size_t)pObjStream->GetSize(), FALSE));
- syntax.InitParser(file.Get(), 0);
- CPDF_Object* pRet = NULL;
- while (n) {
- FX_DWORD thisnum = syntax.GetDirectNum();
- FX_DWORD thisoff = syntax.GetDirectNum();
- if (thisnum == objnum) {
- syntax.RestorePos(offset + thisoff);
- pRet = syntax.GetObject(pObjList, 0, 0, pContext);
- break;
- }
- n--;
- }
- return pRet;
- }
- return NULL;
+ if (m_V5Type[objnum] != 2)
+ return nullptr;
+
+ CPDF_StreamAcc* pObjStream = GetObjectStream((FX_DWORD)m_CrossRef[objnum]);
+ if (!pObjStream)
+ return nullptr;
+
+ ScopedFileStream file(FX_CreateMemoryStream(
+ (uint8_t*)pObjStream->GetData(), (size_t)pObjStream->GetSize(), FALSE));
+ CPDF_SyntaxParser syntax;
+ syntax.InitParser(file.get(), 0);
+ int32_t offset = GetStreamFirst(pObjStream);
+ for (int32_t i = GetStreamNCount(pObjStream); i > 0; --i) {
+ FX_DWORD thisnum = syntax.GetDirectNum();
+ FX_DWORD thisoff = syntax.GetDirectNum();
+ if (thisnum == objnum) {
+ syntax.RestorePos(offset + thisoff);
+ return syntax.GetObject(pObjList, 0, 0, pContext);
+ }
+ }
+ return nullptr;
}
+
CPDF_StreamAcc* CPDF_Parser::GetObjectStream(FX_DWORD objnum) {
CPDF_StreamAcc* pStreamAcc = NULL;
if (m_ObjectStreamMap.Lookup((void*)(uintptr_t)objnum, (void*&)pStreamAcc)) {
@@ -1287,103 +1302,105 @@ void CPDF_Parser::GetIndirectBinary(FX_DWORD objnum,
}
if (m_V5Type[objnum] == 2) {
CPDF_StreamAcc* pObjStream = GetObjectStream((FX_DWORD)m_CrossRef[objnum]);
- if (pObjStream == NULL) {
+ if (!pObjStream)
return;
- }
- int32_t n = pObjStream->GetDict()->GetInteger(FX_BSTRC("N"));
- int32_t offset = pObjStream->GetDict()->GetInteger(FX_BSTRC("First"));
- CPDF_SyntaxParser syntax;
+
+ int32_t offset = GetStreamFirst(pObjStream);
const uint8_t* pData = pObjStream->GetData();
FX_DWORD totalsize = pObjStream->GetSize();
- CFX_SmartPointer<IFX_FileStream> file(
+ ScopedFileStream file(
FX_CreateMemoryStream((uint8_t*)pData, (size_t)totalsize, FALSE));
- syntax.InitParser(file.Get(), 0);
- while (n) {
+ CPDF_SyntaxParser syntax;
+ syntax.InitParser(file.get(), 0);
+ for (int i = GetStreamNCount(pObjStream); i > 0; --i) {
FX_DWORD thisnum = syntax.GetDirectNum();
FX_DWORD thisoff = syntax.GetDirectNum();
- if (thisnum == objnum) {
- if (n == 1) {
- size = totalsize - (thisoff + offset);
- } else {
- syntax.GetDirectNum(); // Skip nextnum.
- FX_DWORD nextoff = syntax.GetDirectNum();
- size = nextoff - thisoff;
- }
- pBuffer = FX_Alloc(uint8_t, size);
- FXSYS_memcpy(pBuffer, pData + thisoff + offset, size);
- return;
+ if (thisnum != objnum)
+ continue;
+
+ if (i == 1) {
+ size = totalsize - (thisoff + offset);
+ } else {
+ syntax.GetDirectNum(); // Skip nextnum.
+ FX_DWORD nextoff = syntax.GetDirectNum();
+ size = nextoff - thisoff;
}
- n--;
+ pBuffer = FX_Alloc(uint8_t, size);
+ FXSYS_memcpy(pBuffer, pData + thisoff + offset, size);
+ return;
}
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 parser_objnum = FXSYS_atoi(word);
- if (parser_objnum && parser_objnum != objnum) {
- m_Syntax.RestorePos(SavedPos);
- return;
- }
+
+ if (m_V5Type[objnum] != 1)
+ return;
+
+ FX_FILESIZE pos = m_CrossRef[objnum];
+ if (pos == 0) {
+ return;
+ }
+ FX_FILESIZE SavedPos = m_Syntax.SavePos();
+ m_Syntax.RestorePos(pos);
+ FX_BOOL bIsNumber;
+ CFX_ByteString word = m_Syntax.GetNextWord(bIsNumber);
+ if (!bIsNumber) {
+ m_Syntax.RestorePos(SavedPos);
+ return;
+ }
+ FX_DWORD parser_objnum = FXSYS_atoi(word);
+ if (parser_objnum && parser_objnum != objnum) {
+ m_Syntax.RestorePos(SavedPos);
+ return;
+ }
+ word = m_Syntax.GetNextWord(bIsNumber);
+ if (!bIsNumber) {
+ m_Syntax.RestorePos(SavedPos);
+ return;
+ }
+ if (m_Syntax.GetKeyword() != FX_BSTRC("obj")) {
+ m_Syntax.RestorePos(SavedPos);
+ return;
+ }
+ void* pResult =
+ FXSYS_bsearch(&pos, m_SortedOffset.GetData(), m_SortedOffset.GetSize(),
+ sizeof(FX_FILESIZE), CompareFileSize);
+ if (pResult == NULL) {
+ m_Syntax.RestorePos(SavedPos);
+ return;
+ }
+ FX_FILESIZE nextoff = ((FX_FILESIZE*)pResult)[1];
+ FX_BOOL bNextOffValid = FALSE;
+ if (nextoff != pos) {
+ m_Syntax.RestorePos(nextoff);
word = m_Syntax.GetNextWord(bIsNumber);
- if (!bIsNumber) {
- m_Syntax.RestorePos(SavedPos);
- return;
- }
- if (m_Syntax.GetKeyword() != FX_BSTRC("obj")) {
- m_Syntax.RestorePos(SavedPos);
- return;
- }
- void* pResult =
- FXSYS_bsearch(&pos, m_SortedOffset.GetData(), m_SortedOffset.GetSize(),
- sizeof(FX_FILESIZE), CompareFileSize);
- if (pResult == NULL) {
- m_Syntax.RestorePos(SavedPos);
- return;
- }
- FX_FILESIZE nextoff = ((FX_FILESIZE*)pResult)[1];
- FX_BOOL bNextOffValid = FALSE;
- if (nextoff != pos) {
- m_Syntax.RestorePos(nextoff);
+ if (word == FX_BSTRC("xref")) {
+ bNextOffValid = TRUE;
+ } else if (bIsNumber) {
word = m_Syntax.GetNextWord(bIsNumber);
- if (word == FX_BSTRC("xref")) {
+ if (bIsNumber && m_Syntax.GetKeyword() == FX_BSTRC("obj")) {
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;
- }
+ }
+ 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(uint8_t, size);
- m_Syntax.RestorePos(pos);
- m_Syntax.ReadBlock(pBuffer, size);
- m_Syntax.RestorePos(SavedPos);
+ nextoff = m_Syntax.SavePos();
}
+ size = (FX_DWORD)(nextoff - pos);
+ pBuffer = FX_Alloc(uint8_t, size);
+ m_Syntax.RestorePos(pos);
+ m_Syntax.ReadBlock(pBuffer, size);
+ m_Syntax.RestorePos(SavedPos);
}
+
CPDF_Object* CPDF_Parser::ParseIndirectObjectAt(CPDF_IndirectObjects* pObjList,
FX_FILESIZE pos,
FX_DWORD objnum,
@@ -1466,19 +1483,18 @@ CPDF_Object* CPDF_Parser::ParseIndirectObjectAtByStrict(
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;
+ if (m_Syntax.GetKeyword() != FX_BSTRC("trailer"))
+ return nullptr;
+
+ nonstd::unique_ptr<CPDF_Object, ReleaseDeleter<CPDF_Object>> pObj(
+ m_Syntax.GetObject(m_pDocument, 0, 0, 0));
+ if (!pObj || pObj->GetType() != PDFOBJ_DICTIONARY)
+ return nullptr;
+ return static_cast<CPDF_Dictionary*>(pObj.release());
}
+
FX_DWORD CPDF_Parser::GetPermissions(FX_BOOL bCheckRevision) {
if (m_pSecurityHandler == NULL) {
return (FX_DWORD)-1;
@@ -2133,13 +2149,10 @@ CPDF_Object* CPDF_SyntaxParser::GetObject(CPDF_IndirectObjects* pObjList,
return (CPDF_Object*)PDFOBJ_ARRAY;
}
CPDF_Array* pArray = CPDF_Array::Create();
- while (1) {
- CPDF_Object* pObj = GetObject(pObjList, objnum, gennum);
- if (pObj == NULL) {
- return pArray;
- }
+ while (CPDF_Object* pObj = GetObject(pObjList, objnum, gennum))
pArray->Add(pObj);
- }
+
+ return pArray;
}
if (word[0] == '/') {
if (bTypeOnly) {
@@ -2149,43 +2162,42 @@ CPDF_Object* CPDF_SyntaxParser::GetObject(CPDF_IndirectObjects* pObjList,
PDF_NameDecode(CFX_ByteStringC(m_WordBuffer + 1, m_WordSize - 1)));
}
if (word == FX_BSTRC("<<")) {
- if (bTypeOnly) {
+ if (bTypeOnly)
return (CPDF_Object*)PDFOBJ_DICTIONARY;
- }
- if (pContext) {
+
+ if (pContext)
pContext->m_DictStart = SavedPos;
- }
- CPDF_Dictionary* pDict = CPDF_Dictionary::Create();
+
int32_t nKeys = 0;
FX_FILESIZE dwSignValuePos = 0;
+ nonstd::unique_ptr<CPDF_Dictionary, ReleaseDeleter<CPDF_Dictionary>> pDict(
+ CPDF_Dictionary::Create());
while (1) {
FX_BOOL bIsNumber;
CFX_ByteString key = GetNextWord(bIsNumber);
- if (key.IsEmpty()) {
- if (pDict)
- pDict->Release();
- return NULL;
- }
+ if (key.IsEmpty())
+ return nullptr;
+
FX_FILESIZE SavedPos = m_Pos - key.GetLength();
- if (key == FX_BSTRC(">>")) {
+ if (key == FX_BSTRC(">>"))
break;
- }
+
if (key == FX_BSTRC("endobj")) {
m_Pos = SavedPos;
break;
}
- if (key[0] != '/') {
+ if (key[0] != '/')
continue;
- }
- nKeys++;
+
+ ++nKeys;
key = PDF_NameDecode(key);
- if (key == FX_BSTRC("/Contents")) {
+ if (key == FX_BSTRC("/Contents"))
dwSignValuePos = m_Pos;
- }
+
CPDF_Object* pObj = GetObject(pObjList, objnum, gennum);
- if (pObj == NULL) {
+ if (!pObj)
continue;
- }
+
if (key.GetLength() >= 1) {
if (nKeys < 32) {
pDict->SetAt(CFX_ByteStringC(key.c_str() + 1, key.GetLength() - 1),
@@ -2196,7 +2208,8 @@ CPDF_Object* CPDF_SyntaxParser::GetObject(CPDF_IndirectObjects* pObjList,
}
}
}
- if (IsSignatureDict(pDict)) {
+
+ if (IsSignatureDict(pDict.get())) {
FX_FILESIZE dwSavePos = m_Pos;
m_Pos = dwSignValuePos;
CPDF_Object* pObj = GetObject(pObjList, objnum, gennum, NULL, FALSE);
@@ -2206,34 +2219,29 @@ CPDF_Object* CPDF_SyntaxParser::GetObject(CPDF_IndirectObjects* pObjList,
if (pContext) {
pContext->m_DictEnd = m_Pos;
if (pContext->m_Flags & PDFPARSE_NOSTREAM) {
- return pDict;
+ return pDict.release();
}
}
FX_FILESIZE SavedPos = m_Pos;
FX_BOOL bIsNumber;
CFX_ByteString nextword = GetNextWord(bIsNumber);
- if (nextword == FX_BSTRC("stream")) {
- CPDF_Stream* pStream = ReadStream(pDict, pContext, objnum, gennum);
- if (pStream) {
- return pStream;
- }
- if (pDict)
- pDict->Release();
- return NULL;
- } else {
+ if (nextword != FX_BSTRC("stream")) {
m_Pos = SavedPos;
- return pDict;
+ return pDict.release();
}
+
+ return ReadStream(pDict.release(), pContext, objnum, gennum);
}
if (word == FX_BSTRC(">>")) {
m_Pos = SavedPos;
- return NULL;
+ return nullptr;
}
- if (bTypeOnly) {
+ if (bTypeOnly)
return (CPDF_Object*)PDFOBJ_INVALID;
- }
- return NULL;
+
+ return nullptr;
}
+
CPDF_Object* CPDF_SyntaxParser::GetObjectByStrict(
CPDF_IndirectObjects* pObjList,
FX_DWORD objnum,
@@ -2308,20 +2316,11 @@ CPDF_Object* CPDF_SyntaxParser::GetObjectByStrict(
if (bTypeOnly) {
return (CPDF_Object*)PDFOBJ_ARRAY;
}
- CPDF_Array* pArray = CPDF_Array::Create();
- while (1) {
- CPDF_Object* pObj = GetObject(pObjList, objnum, gennum);
- if (pObj == NULL) {
- if (m_WordBuffer[0] == ']') {
- return pArray;
- }
- if (pArray) {
- pArray->Release();
- }
- return NULL;
- }
+ nonstd::unique_ptr<CPDF_Array, ReleaseDeleter<CPDF_Array>> pArray(
+ CPDF_Array::Create());
+ while (CPDF_Object* pObj = GetObject(pObjList, objnum, gennum))
pArray->Add(pObj);
- }
+ return m_WordBuffer[0] == ']' ? pArray.release() : nullptr;
}
if (word[0] == '/') {
if (bTypeOnly) {
@@ -2337,44 +2336,33 @@ CPDF_Object* CPDF_SyntaxParser::GetObjectByStrict(
if (pContext) {
pContext->m_DictStart = SavedPos;
}
- CPDF_Dictionary* pDict = CPDF_Dictionary::Create();
+ nonstd::unique_ptr<CPDF_Dictionary, ReleaseDeleter<CPDF_Dictionary>> pDict(
+ CPDF_Dictionary::Create());
while (1) {
FX_BOOL bIsNumber;
FX_FILESIZE SavedPos = m_Pos;
CFX_ByteString key = GetNextWord(bIsNumber);
- if (key.IsEmpty()) {
- if (pDict) {
- pDict->Release();
- }
- return NULL;
- }
- if (key == FX_BSTRC(">>")) {
+ if (key.IsEmpty())
+ return nullptr;
+
+ if (key == FX_BSTRC(">>"))
break;
- }
+
if (key == FX_BSTRC("endobj")) {
m_Pos = SavedPos;
break;
}
- if (key[0] != '/') {
+ if (key[0] != '/')
continue;
- }
+
key = PDF_NameDecode(key);
nonstd::unique_ptr<CPDF_Object, ReleaseDeleter<CPDF_Object>> obj(
GetObject(pObjList, objnum, gennum));
if (!obj) {
- if (pDict) {
- pDict->Release();
- }
uint8_t ch;
- while (1) {
- if (!GetNextChar(ch)) {
- break;
- }
- if (ch == 0x0A || ch == 0x0D) {
- break;
- }
+ while (GetNextChar(ch) && ch != 0x0A && ch != 0x0D) {
}
- return NULL;
+ return nullptr;
}
if (key.GetLength() > 1) {
pDict->AddValue(CFX_ByteStringC(key.c_str() + 1, key.GetLength() - 1),
@@ -2384,35 +2372,29 @@ CPDF_Object* CPDF_SyntaxParser::GetObjectByStrict(
if (pContext) {
pContext->m_DictEnd = m_Pos;
if (pContext->m_Flags & PDFPARSE_NOSTREAM) {
- return pDict;
+ return pDict.release();
}
}
FX_FILESIZE SavedPos = m_Pos;
FX_BOOL bIsNumber;
CFX_ByteString nextword = GetNextWord(bIsNumber);
- if (nextword == FX_BSTRC("stream")) {
- CPDF_Stream* pStream = ReadStream(pDict, pContext, objnum, gennum);
- if (pStream) {
- return pStream;
- }
- if (pDict) {
- pDict->Release();
- }
- return NULL;
- } else {
+ if (nextword != FX_BSTRC("stream")) {
m_Pos = SavedPos;
- return pDict;
+ return pDict.release();
}
+
+ return ReadStream(pDict.release(), pContext, objnum, gennum);
}
if (word == FX_BSTRC(">>")) {
m_Pos = SavedPos;
- return NULL;
+ return nullptr;
}
- if (bTypeOnly) {
+ if (bTypeOnly)
return (CPDF_Object*)PDFOBJ_INVALID;
- }
- return NULL;
+
+ return nullptr;
}
+
unsigned int CPDF_SyntaxParser::ReadEOLMarkers(FX_FILESIZE pos) {
unsigned char byte1 = 0;
unsigned char byte2 = 0;
@@ -2676,12 +2658,6 @@ FX_BOOL CPDF_SyntaxParser::SearchWord(const CFX_ByteStringC& tag,
return FALSE;
}
-struct _SearchTagRecord {
- const uint8_t* m_pTag;
- FX_DWORD m_Len;
- FX_DWORD m_Offset;
-};
-
int32_t CPDF_SyntaxParser::SearchMultiWord(const CFX_ByteStringC& tags,
FX_BOOL bWholeWord,
FX_FILESIZE limit) {
@@ -2692,7 +2668,7 @@ int32_t CPDF_SyntaxParser::SearchMultiWord(const CFX_ByteStringC& tags,
}
}
- std::vector<_SearchTagRecord> patterns(ntags);
+ std::vector<SearchTagRecord> patterns(ntags);
FX_DWORD start = 0;
FX_DWORD itag = 0;
FX_DWORD max_len = 0;
@@ -2715,7 +2691,7 @@ int32_t CPDF_SyntaxParser::SearchMultiWord(const CFX_ByteStringC& tags,
break;
for (int i = 0; i < ntags; ++i) {
- _SearchTagRecord& pat = patterns[i];
+ SearchTagRecord& pat = patterns[i];
if (pat.m_pTag[pat.m_Offset] != byte) {
pat.m_Offset = (pat.m_pTag[0] == byte) ? 1 : 0;
continue;
@@ -3734,15 +3710,14 @@ int32_t CPDF_DataAvail::IsLinearizedPDF() {
return PDF_NOT_LINEARIZED;
}
FX_BOOL CPDF_DataAvail::IsLinearizedFile(uint8_t* pData, FX_DWORD dwLen) {
- CFX_SmartPointer<IFX_FileStream> file(
- FX_CreateMemoryStream(pData, (size_t)dwLen, FALSE));
- int32_t offset = GetHeaderOffset(file.Get());
+ ScopedFileStream file(FX_CreateMemoryStream(pData, (size_t)dwLen, FALSE));
+ int32_t offset = GetHeaderOffset(file.get());
if (offset == -1) {
m_docStatus = PDF_DATAAVAIL_ERROR;
return FALSE;
}
m_dwHeaderOffset = offset;
- m_syntaxParser.InitParser(file.Get(), offset);
+ m_syntaxParser.InitParser(file.get(), offset);
m_syntaxParser.RestorePos(m_syntaxParser.m_HeaderOffset + 9);
FX_BOOL bNumber = FALSE;
CFX_ByteString wordObjNum = m_syntaxParser.GetNextWord(bNumber);
@@ -3783,9 +3758,8 @@ FX_BOOL CPDF_DataAvail::CheckEnd(IFX_DownloadHints* pHints) {
if (m_pFileAvail->IsDataAvail(req_pos, dwSize)) {
uint8_t buffer[1024];
m_pFileRead->ReadBlock(buffer, req_pos, dwSize);
- CFX_SmartPointer<IFX_FileStream> file(
- FX_CreateMemoryStream(buffer, (size_t)dwSize, FALSE));
- m_syntaxParser.InitParser(file.Get(), 0);
+ ScopedFileStream file(FX_CreateMemoryStream(buffer, (size_t)dwSize, FALSE));
+ m_syntaxParser.InitParser(file.get(), 0);
m_syntaxParser.RestorePos(dwSize - 1);
if (m_syntaxParser.SearchWord(FX_BSTRC("startxref"), TRUE, FALSE, dwSize)) {
FX_BOOL bNumber;
@@ -3821,9 +3795,8 @@ int32_t CPDF_DataAvail::CheckCrossRefStream(IFX_DownloadHints* pHints,
CFX_BinaryBuf buf(iSize);
uint8_t* pBuf = buf.GetBuffer();
m_pFileRead->ReadBlock(pBuf, m_dwCurrentXRefSteam, iSize);
- CFX_SmartPointer<IFX_FileStream> file(
- FX_CreateMemoryStream(pBuf, (size_t)iSize, FALSE));
- m_parser.m_Syntax.InitParser(file.Get(), 0);
+ ScopedFileStream file(FX_CreateMemoryStream(pBuf, (size_t)iSize, FALSE));
+ m_parser.m_Syntax.InitParser(file.get(), 0);
FX_BOOL bNumber = FALSE;
CFX_ByteString objnum = m_parser.m_Syntax.GetNextWord(bNumber);
if (!bNumber) {
@@ -4061,31 +4034,28 @@ FX_BOOL CPDF_DataAvail::CheckTrailer(IFX_DownloadHints* pHints) {
if (!m_pFileRead->ReadBlock(pBuf, m_dwTrailerOffset, iSize)) {
return FALSE;
}
- CFX_SmartPointer<IFX_FileStream> file(
- FX_CreateMemoryStream(pBuf, (size_t)iSize, FALSE));
- m_syntaxParser.InitParser(file.Get(), 0);
- CPDF_Object* pTrailer = m_syntaxParser.GetObject(nullptr, 0, 0);
+ ScopedFileStream file(FX_CreateMemoryStream(pBuf, (size_t)iSize, FALSE));
+ m_syntaxParser.InitParser(file.get(), 0);
+ nonstd::unique_ptr<CPDF_Object, ReleaseDeleter<CPDF_Object>> pTrailer(
+ m_syntaxParser.GetObject(nullptr, 0, 0));
if (!pTrailer) {
m_Pos += m_syntaxParser.SavePos();
pHints->AddSegment(m_Pos, iTrailerSize);
return FALSE;
}
- if (pTrailer->GetType() != PDFOBJ_DICTIONARY) {
- pTrailer->Release();
+ if (pTrailer->GetType() != PDFOBJ_DICTIONARY)
return FALSE;
- }
+
CPDF_Dictionary* pTrailerDict = pTrailer->GetDict();
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"));
+
+ FX_DWORD xrefpos = GetDirectInteger(pTrailerDict, FX_BSTRC("Prev"));
if (xrefpos) {
- m_dwPrevXRefOffset =
- GetDirectInteger(pTrailer->GetDict(), FX_BSTRC("XRefStm"));
- pTrailer->Release();
+ m_dwPrevXRefOffset = GetDirectInteger(pTrailerDict, FX_BSTRC("XRefStm"));
if (m_dwPrevXRefOffset) {
m_docStatus = PDF_DATAAVAIL_LOADALLFILE;
} else {
@@ -4101,7 +4071,6 @@ FX_BOOL CPDF_DataAvail::CheckTrailer(IFX_DownloadHints* pHints) {
}
m_dwPrevXRefOffset = 0;
m_docStatus = PDF_DATAAVAIL_TRAILER_APPEND;
- pTrailer->Release();
return TRUE;
}
pHints->AddSegment(m_Pos, iTrailerSize);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 10:25:00 +0000