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-rw-r--r--core/fpdfapi/parser/cpdf_document_unittest.cpp2
-rw-r--r--core/fpdfapi/parser/cpdf_linearized_header.cpp29
-rw-r--r--core/fpdfapi/parser/cpdf_linearized_header.h17
3 files changed, 26 insertions, 22 deletions
diff --git a/core/fpdfapi/parser/cpdf_document_unittest.cpp b/core/fpdfapi/parser/cpdf_document_unittest.cpp
index 9e03c96697..d1b8dce74a 100644
--- a/core/fpdfapi/parser/cpdf_document_unittest.cpp
+++ b/core/fpdfapi/parser/cpdf_document_unittest.cpp
@@ -133,7 +133,7 @@ class CPDF_TestDocumentWithPageWithoutPageNum : public CPDF_Document {
class TestLinearized : public CPDF_LinearizedHeader {
public:
explicit TestLinearized(CPDF_Dictionary* dict)
- : CPDF_LinearizedHeader(dict) {}
+ : CPDF_LinearizedHeader(dict, 0) {}
};
class CPDF_TestDocPagesWithoutKids : public CPDF_Document {
diff --git a/core/fpdfapi/parser/cpdf_linearized_header.cpp b/core/fpdfapi/parser/cpdf_linearized_header.cpp
index ce22c55f48..3251a5eb9f 100644
--- a/core/fpdfapi/parser/cpdf_linearized_header.cpp
+++ b/core/fpdfapi/parser/cpdf_linearized_header.cpp
@@ -70,22 +70,25 @@ std::unique_ptr<CPDF_LinearizedHeader> CPDF_LinearizedHeader::Parse(
if (parser->GetNextWord(nullptr) != "endobj")
return nullptr;
- auto result = pdfium::WrapUnique(new CPDF_LinearizedHeader(pDict.get()));
- result->m_szLastXRefOffset = parser->GetPos();
+ auto result = pdfium::WrapUnique(
+ new CPDF_LinearizedHeader(pDict.get(), parser->GetPos()));
- return IsLinearizedHeaderValid(result.get(),
- parser->GetFileAccess()->GetSize())
- ? std::move(result)
- : nullptr;
+ if (!IsLinearizedHeaderValid(result.get(),
+ parser->GetFileAccess()->GetSize())) {
+ return nullptr;
+ }
+ return result;
}
-CPDF_LinearizedHeader::CPDF_LinearizedHeader(const CPDF_Dictionary* pDict) {
- m_szFileSize = pDict->GetIntegerFor("L");
- m_dwFirstPageNo = pDict->GetIntegerFor("P");
- m_szMainXRefTableFirstEntryOffset = pDict->GetIntegerFor("T");
- m_PageCount = pDict->GetIntegerFor("N");
- m_szFirstPageEndOffset = pDict->GetIntegerFor("E");
- m_FirstPageObjNum = pDict->GetIntegerFor("O");
+CPDF_LinearizedHeader::CPDF_LinearizedHeader(const CPDF_Dictionary* pDict,
+ FX_FILESIZE szLastXRefOffset)
+ : m_szFileSize(pDict->GetIntegerFor("L")),
+ m_dwFirstPageNo(pDict->GetIntegerFor("P")),
+ m_szMainXRefTableFirstEntryOffset(pDict->GetIntegerFor("T")),
+ m_PageCount(pDict->GetIntegerFor("N")),
+ m_szFirstPageEndOffset(pDict->GetIntegerFor("E")),
+ m_FirstPageObjNum(pDict->GetIntegerFor("O")),
+ m_szLastXRefOffset(szLastXRefOffset) {
const CPDF_Array* pHintStreamRange = pDict->GetArrayFor("H");
const size_t nHintStreamSize =
pHintStreamRange ? pHintStreamRange->GetCount() : 0;
diff --git a/core/fpdfapi/parser/cpdf_linearized_header.h b/core/fpdfapi/parser/cpdf_linearized_header.h
index d73216059f..964ae26dff 100644
--- a/core/fpdfapi/parser/cpdf_linearized_header.h
+++ b/core/fpdfapi/parser/cpdf_linearized_header.h
@@ -43,18 +43,19 @@ class CPDF_LinearizedHeader {
uint32_t GetHintLength() const { return m_HintLength; }
protected:
- explicit CPDF_LinearizedHeader(const CPDF_Dictionary* pDict);
+ CPDF_LinearizedHeader(const CPDF_Dictionary* pDict,
+ FX_FILESIZE szLastXRefOffset);
private:
- FX_FILESIZE m_szFileSize = 0;
- uint32_t m_dwFirstPageNo = 0;
- FX_FILESIZE m_szMainXRefTableFirstEntryOffset = 0;
- uint32_t m_PageCount = 0;
- FX_FILESIZE m_szFirstPageEndOffset = 0;
- uint32_t m_FirstPageObjNum = 0;
+ const FX_FILESIZE m_szFileSize;
+ const uint32_t m_dwFirstPageNo;
+ const FX_FILESIZE m_szMainXRefTableFirstEntryOffset;
+ const uint32_t m_PageCount;
+ const FX_FILESIZE m_szFirstPageEndOffset;
+ const uint32_t m_FirstPageObjNum;
+ const FX_FILESIZE m_szLastXRefOffset;
FX_FILESIZE m_szHintStart = 0;
uint32_t m_HintLength = 0;
- FX_FILESIZE m_szLastXRefOffset = 0;
};
#endif // CORE_FPDFAPI_PARSER_CPDF_LINEARIZED_HEADER_H_