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-rw-r--r--core/fpdfapi/parser/cpdf_parser.cpp58
-rw-r--r--core/fpdfapi/parser/cpdf_parser.h12
2 files changed, 30 insertions, 40 deletions
diff --git a/core/fpdfapi/parser/cpdf_parser.cpp b/core/fpdfapi/parser/cpdf_parser.cpp
index 905f36622a..cf23ec7cd7 100644
--- a/core/fpdfapi/parser/cpdf_parser.cpp
+++ b/core/fpdfapi/parser/cpdf_parser.cpp
@@ -51,16 +51,15 @@ CPDF_Parser::CPDF_Parser()
: m_pDocument(nullptr),
m_bHasParsed(false),
m_bOwnFileRead(true),
+ m_bXRefStream(false),
+ m_bVersionUpdated(false),
m_FileVersion(0),
- m_pTrailer(nullptr),
m_pEncryptDict(nullptr),
- m_bVersionUpdated(false),
m_dwXrefStartObjNum(0) {
m_pSyntax.reset(new CPDF_SyntaxParser);
}
CPDF_Parser::~CPDF_Parser() {
- delete m_pTrailer;
ReleaseEncryptHandler();
SetEncryptDictionary(nullptr);
@@ -68,9 +67,6 @@ CPDF_Parser::~CPDF_Parser() {
m_pSyntax->m_pFileAccess->Release();
m_pSyntax->m_pFileAccess = nullptr;
}
-
- for (CPDF_Dictionary* trailer : m_Trailers)
- delete trailer;
}
uint32_t CPDF_Parser::GetLastObjNum() const {
@@ -323,7 +319,7 @@ bool CPDF_Parser::LoadAllCrossRefV4(FX_FILESIZE xrefpos) {
if (!m_pTrailer)
return false;
- int32_t xrefsize = GetDirectInteger(m_pTrailer, "Size");
+ int32_t xrefsize = GetDirectInteger(m_pTrailer.get(), "Size");
if (xrefsize > 0 && xrefsize <= kMaxXRefSize)
ShrinkObjectMap(xrefsize);
@@ -332,12 +328,12 @@ bool CPDF_Parser::LoadAllCrossRefV4(FX_FILESIZE xrefpos) {
std::set<FX_FILESIZE> seen_xrefpos;
CrossRefList.push_back(xrefpos);
- XRefStreamList.push_back(GetDirectInteger(m_pTrailer, "XRefStm"));
+ XRefStreamList.push_back(GetDirectInteger(m_pTrailer.get(), "XRefStm"));
seen_xrefpos.insert(xrefpos);
// When |m_pTrailer| doesn't have Prev entry or Prev entry value is not
// numerical, GetDirectInteger() returns 0. Loading will end.
- xrefpos = GetDirectInteger(m_pTrailer, "Prev");
+ xrefpos = GetDirectInteger(m_pTrailer.get(), "Prev");
while (xrefpos) {
// Check for circular references.
if (pdfium::ContainsKey(seen_xrefpos, xrefpos))
@@ -358,7 +354,7 @@ bool CPDF_Parser::LoadAllCrossRefV4(FX_FILESIZE xrefpos) {
// SLOW ...
XRefStreamList.insert(XRefStreamList.begin(),
pDict->GetIntegerFor("XRefStm"));
- m_Trailers.push_back(pDict.release());
+ m_Trailers.push_back(std::move(pDict));
}
for (size_t i = 0; i < CrossRefList.size(); ++i) {
@@ -379,7 +375,7 @@ bool CPDF_Parser::LoadLinearizedAllCrossRefV4(FX_FILESIZE xrefpos,
if (!m_pTrailer)
return false;
- int32_t xrefsize = GetDirectInteger(m_pTrailer, "Size");
+ int32_t xrefsize = GetDirectInteger(m_pTrailer.get(), "Size");
if (xrefsize == 0)
return false;
@@ -388,10 +384,10 @@ bool CPDF_Parser::LoadLinearizedAllCrossRefV4(FX_FILESIZE xrefpos,
std::set<FX_FILESIZE> seen_xrefpos;
CrossRefList.push_back(xrefpos);
- XRefStreamList.push_back(GetDirectInteger(m_pTrailer, "XRefStm"));
+ XRefStreamList.push_back(GetDirectInteger(m_pTrailer.get(), "XRefStm"));
seen_xrefpos.insert(xrefpos);
- xrefpos = GetDirectInteger(m_pTrailer, "Prev");
+ xrefpos = GetDirectInteger(m_pTrailer.get(), "Prev");
while (xrefpos) {
// Check for circular references.
if (pdfium::ContainsKey(seen_xrefpos, xrefpos))
@@ -412,7 +408,7 @@ bool CPDF_Parser::LoadLinearizedAllCrossRefV4(FX_FILESIZE xrefpos,
// SLOW ...
XRefStreamList.insert(XRefStreamList.begin(),
pDict->GetIntegerFor("XRefStm"));
- m_Trailers.push_back(pDict.release());
+ m_Trailers.push_back(std::move(pDict));
}
for (size_t i = 1; i < CrossRefList.size(); ++i) {
@@ -580,8 +576,7 @@ bool CPDF_Parser::LoadAllCrossRefV5(FX_FILESIZE xrefpos) {
bool CPDF_Parser::RebuildCrossRef() {
m_ObjectInfo.clear();
m_SortedOffset.clear();
- delete m_pTrailer;
- m_pTrailer = nullptr;
+ m_pTrailer.reset();
ParserState state = ParserState::kDefault;
int32_t inside_index = 0;
@@ -742,8 +737,8 @@ bool CPDF_Parser::RebuildCrossRef() {
CPDF_Object* pRoot = pDict->GetObjectFor("Root");
if (pRoot && pRoot->GetDict() &&
pRoot->GetDict()->GetObjectFor("Pages")) {
- delete m_pTrailer;
- m_pTrailer = ToDictionary(pDict->Clone());
+ m_pTrailer =
+ ToDictionary(pdfium::WrapUnique(pDict->Clone()));
}
}
}
@@ -822,10 +817,10 @@ bool CPDF_Parser::RebuildCrossRef() {
}
} else {
if (pObj->IsStream()) {
- m_pTrailer = ToDictionary(pTrailer->Clone());
+ m_pTrailer =
+ ToDictionary(pdfium::WrapUnique(pTrailer->Clone()));
} else {
- pObj.release();
- m_pTrailer = pTrailer;
+ m_pTrailer = ToDictionary(std::move(pObj));
}
FX_FILESIZE dwSavePos = m_pSyntax->SavePos();
@@ -964,14 +959,15 @@ bool CPDF_Parser::LoadCrossRefV5(FX_FILESIZE* pos, bool bMainXRef) {
if (size < 0)
return false;
- CPDF_Dictionary* pNewTrailer = ToDictionary(pDict->Clone());
+ std::unique_ptr<CPDF_Dictionary> pNewTrailer =
+ ToDictionary(pdfium::WrapUnique(pDict->Clone()));
if (bMainXRef) {
- m_pTrailer = pNewTrailer;
+ m_pTrailer = std::move(pNewTrailer);
ShrinkObjectMap(size);
for (auto& it : m_ObjectInfo)
it.second.type = 0;
} else {
- m_Trailers.push_back(pNewTrailer);
+ m_Trailers.push_back(std::move(pNewTrailer));
}
std::vector<std::pair<int32_t, int32_t>> arrIndex;
@@ -1400,15 +1396,11 @@ uint32_t CPDF_Parser::GetFirstPageNo() const {
return m_pLinearized ? m_pLinearized->GetFirstPageNo() : 0;
}
-CPDF_Dictionary* CPDF_Parser::LoadTrailerV4() {
+std::unique_ptr<CPDF_Dictionary> CPDF_Parser::LoadTrailerV4() {
if (m_pSyntax->GetKeyword() != "trailer")
return nullptr;
- std::unique_ptr<CPDF_Object> pObj(
- m_pSyntax->GetObject(m_pDocument, 0, 0, true));
- if (!ToDictionary(pObj.get()))
- return nullptr;
- return pObj.release()->AsDictionary();
+ return ToDictionary(m_pSyntax->GetObject(m_pDocument, 0, 0, true));
}
uint32_t CPDF_Parser::GetPermissions() const {
@@ -1494,7 +1486,7 @@ CPDF_Parser::Error CPDF_Parser::StartLinearizedParse(
if (!m_pTrailer)
return SUCCESS;
- int32_t xrefsize = GetDirectInteger(m_pTrailer, "Size");
+ int32_t xrefsize = GetDirectInteger(m_pTrailer.get(), "Size");
if (xrefsize > 0)
ShrinkObjectMap(xrefsize);
}
@@ -1561,9 +1553,7 @@ bool CPDF_Parser::LoadLinearizedAllCrossRefV5(FX_FILESIZE xrefpos) {
CPDF_Parser::Error CPDF_Parser::LoadLinearizedMainXRefTable() {
uint32_t dwSaveMetadataObjnum = m_pSyntax->m_MetadataObjnum;
m_pSyntax->m_MetadataObjnum = 0;
-
- delete m_pTrailer;
- m_pTrailer = nullptr;
+ m_pTrailer.reset();
m_pSyntax->RestorePos(m_LastXRefOffset - m_pSyntax->m_HeaderOffset);
uint8_t ch = 0;
diff --git a/core/fpdfapi/parser/cpdf_parser.h b/core/fpdfapi/parser/cpdf_parser.h
index 007193b3ea..5e2cdea08d 100644
--- a/core/fpdfapi/parser/cpdf_parser.h
+++ b/core/fpdfapi/parser/cpdf_parser.h
@@ -49,7 +49,7 @@ class CPDF_Parser {
void SetPassword(const FX_CHAR* password) { m_Password = password; }
CFX_ByteString GetPassword() { return m_Password; }
- CPDF_Dictionary* GetTrailer() const { return m_pTrailer; }
+ CPDF_Dictionary* GetTrailer() const { return m_pTrailer.get(); }
FX_FILESIZE GetLastXRefOffset() const { return m_LastXRefOffset; }
uint32_t GetPermissions() const;
@@ -132,7 +132,7 @@ class CPDF_Parser {
bool LoadAllCrossRefV4(FX_FILESIZE pos);
bool LoadAllCrossRefV5(FX_FILESIZE pos);
bool LoadCrossRefV5(FX_FILESIZE* pos, bool bMainXRef);
- CPDF_Dictionary* LoadTrailerV4();
+ std::unique_ptr<CPDF_Dictionary> LoadTrailerV4();
Error SetEncryptHandler();
void ReleaseEncryptHandler();
bool LoadLinearizedAllCrossRefV4(FX_FILESIZE pos, uint32_t dwObjCount);
@@ -150,16 +150,16 @@ class CPDF_Parser {
CPDF_Document* m_pDocument; // not owned
bool m_bHasParsed;
bool m_bOwnFileRead;
+ bool m_bXRefStream;
+ bool m_bVersionUpdated;
int m_FileVersion;
- CPDF_Dictionary* m_pTrailer;
CPDF_Dictionary* m_pEncryptDict;
FX_FILESIZE m_LastXRefOffset;
- bool m_bXRefStream;
std::unique_ptr<CPDF_SecurityHandler> m_pSecurityHandler;
CFX_ByteString m_Password;
std::set<FX_FILESIZE> m_SortedOffset;
- std::vector<CPDF_Dictionary*> m_Trailers;
- bool m_bVersionUpdated;
+ std::unique_ptr<CPDF_Dictionary> m_pTrailer;
+ std::vector<std::unique_ptr<CPDF_Dictionary>> m_Trailers;
std::unique_ptr<CPDF_LinearizedHeader> m_pLinearized;
uint32_t m_dwXrefStartObjNum;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 02:56:05 +0000