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-rw-r--r--core/fpdfapi/parser/cpdf_data_avail.cpp87
-rw-r--r--core/fpdfapi/parser/cpdf_data_avail.h11
2 files changed, 52 insertions, 46 deletions
diff --git a/core/fpdfapi/parser/cpdf_data_avail.cpp b/core/fpdfapi/parser/cpdf_data_avail.cpp
index 46c71a5ab9..2f17345ab6 100644
--- a/core/fpdfapi/parser/cpdf_data_avail.cpp
+++ b/core/fpdfapi/parser/cpdf_data_avail.cpp
@@ -52,17 +52,17 @@ CPDF_Object* GetResourceObject(CPDF_Dictionary* pDict) {
return nullptr;
}
-class HintsAssigner {
+class HintsScope {
public:
- HintsAssigner(CPDF_ReadValidator* validator,
- CPDF_DataAvail::DownloadHints* hints)
+ HintsScope(CPDF_ReadValidator* validator,
+ CPDF_DataAvail::DownloadHints* hints)
: validator_(validator) {
ASSERT(validator_);
validator_->ResetErrors();
validator_->SetDownloadHints(hints);
}
- ~HintsAssigner() { validator_->SetDownloadHints(nullptr); }
+ ~HintsScope() { validator_->SetDownloadHints(nullptr); }
private:
CFX_UnownedPtr<CPDF_ReadValidator> validator_;
@@ -155,7 +155,6 @@ uint32_t CPDF_DataAvail::GetObjectSize(uint32_t objnum, FX_FILESIZE& offset) {
bool CPDF_DataAvail::AreObjectsAvailable(std::vector<CPDF_Object*>& obj_array,
bool bParsePage,
- DownloadHints* pHints,
std::vector<CPDF_Object*>& ret_array) {
if (obj_array.empty())
return true;
@@ -188,24 +187,25 @@ bool CPDF_DataAvail::AreObjectsAvailable(std::vector<CPDF_Object*>& obj_array,
break;
}
case CPDF_Object::REFERENCE: {
+ const CPDF_ReadValidator::Session read_session(GetValidator().Get());
+
CPDF_Reference* pRef = pObj->AsReference();
- uint32_t dwNum = pRef->GetRefObjNum();
+ const uint32_t dwNum = pRef->GetRefObjNum();
- FX_FILESIZE offset;
- uint32_t size = GetObjectSize(dwNum, offset);
- if (size == 0 || offset < 0 || offset >= m_dwFileLen)
+ if (pdfium::ContainsKey(m_ObjectSet, dwNum))
break;
- if (!IsDataAvail(offset, size, pHints)) {
+ CPDF_Object* pReferred = m_pDocument->GetOrParseIndirectObject(dwNum);
+ if (GetValidator()->has_read_problems()) {
+ ASSERT(!pReferred);
ret_array.push_back(pObj);
- count++;
- } else if (!pdfium::ContainsKey(m_ObjectSet, dwNum)) {
- m_ObjectSet.insert(dwNum);
- CPDF_Object* pReferred =
- m_pDocument->GetOrParseIndirectObject(pRef->GetRefObjNum());
- if (pReferred)
- new_obj_array.push_back(pReferred);
+ ++count;
+ break;
}
+ m_ObjectSet.insert(dwNum);
+ if (pReferred)
+ new_obj_array.push_back(pReferred);
+
break;
}
}
@@ -222,7 +222,7 @@ bool CPDF_DataAvail::AreObjectsAvailable(std::vector<CPDF_Object*>& obj_array,
}
obj_array = new_obj_array;
- return AreObjectsAvailable(obj_array, false, pHints, ret_array);
+ return AreObjectsAvailable(obj_array, false, ret_array);
}
CPDF_DataAvail::DocAvailStatus CPDF_DataAvail::IsDocAvail(
@@ -230,7 +230,7 @@ CPDF_DataAvail::DocAvailStatus CPDF_DataAvail::IsDocAvail(
if (!m_dwFileLen)
return DataError;
- const HintsAssigner hints_assigner(m_pFileRead.Get(), pHints);
+ const HintsScope hints_scope(m_pFileRead.Get(), pHints);
while (!m_bDocAvail) {
if (!CheckDocStatus(pHints))
@@ -240,7 +240,7 @@ CPDF_DataAvail::DocAvailStatus CPDF_DataAvail::IsDocAvail(
return DataAvailable;
}
-bool CPDF_DataAvail::CheckAcroFormSubObject(DownloadHints* pHints) {
+bool CPDF_DataAvail::CheckAcroFormSubObject() {
if (m_objs_array.empty()) {
std::vector<CPDF_Object*> obj_array(m_Acroforms.size());
std::transform(
@@ -248,7 +248,7 @@ bool CPDF_DataAvail::CheckAcroFormSubObject(DownloadHints* pHints) {
[](const std::unique_ptr<CPDF_Object>& pObj) { return pObj.get(); });
m_ObjectSet.clear();
- if (!AreObjectsAvailable(obj_array, false, pHints, m_objs_array))
+ if (!AreObjectsAvailable(obj_array, false, m_objs_array))
return false;
m_objs_array.clear();
@@ -256,7 +256,7 @@ bool CPDF_DataAvail::CheckAcroFormSubObject(DownloadHints* pHints) {
}
std::vector<CPDF_Object*> new_objs_array;
- if (!AreObjectsAvailable(m_objs_array, false, pHints, new_objs_array)) {
+ if (!AreObjectsAvailable(m_objs_array, false, new_objs_array)) {
m_objs_array = new_objs_array;
return false;
}
@@ -1392,7 +1392,7 @@ CPDF_DataAvail::DocAvailStatus CPDF_DataAvail::CheckLinearizedData(
return m_bLinearedDataOK ? DataAvailable : DataNotAvailable;
}
-bool CPDF_DataAvail::CheckPageAnnots(uint32_t dwPage, DownloadHints* pHints) {
+bool CPDF_DataAvail::CheckPageAnnots(uint32_t dwPage) {
if (m_objs_array.empty()) {
m_ObjectSet.clear();
@@ -1407,7 +1407,7 @@ bool CPDF_DataAvail::CheckPageAnnots(uint32_t dwPage, DownloadHints* pHints) {
std::vector<CPDF_Object*> obj_array;
obj_array.push_back(pAnnots);
- if (!AreObjectsAvailable(obj_array, false, pHints, m_objs_array))
+ if (!AreObjectsAvailable(obj_array, false, m_objs_array))
return false;
m_objs_array.clear();
@@ -1415,7 +1415,7 @@ bool CPDF_DataAvail::CheckPageAnnots(uint32_t dwPage, DownloadHints* pHints) {
}
std::vector<CPDF_Object*> new_objs_array;
- if (!AreObjectsAvailable(m_objs_array, false, pHints, new_objs_array)) {
+ if (!AreObjectsAvailable(m_objs_array, false, new_objs_array)) {
m_objs_array = new_objs_array;
return false;
}
@@ -1424,10 +1424,9 @@ bool CPDF_DataAvail::CheckPageAnnots(uint32_t dwPage, DownloadHints* pHints) {
}
CPDF_DataAvail::DocAvailStatus CPDF_DataAvail::CheckLinearizedFirstPage(
- uint32_t dwPage,
- DownloadHints* pHints) {
+ uint32_t dwPage) {
if (!m_bAnnotsLoad) {
- if (!CheckPageAnnots(dwPage, pHints))
+ if (!CheckPageAnnots(dwPage))
return DataNotAvailable;
m_bAnnotsLoad = true;
}
@@ -1454,9 +1453,11 @@ CPDF_DataAvail::DocAvailStatus CPDF_DataAvail::IsPageAvail(
if (pdfium::ContainsKey(m_pagesLoadState, dwPage))
return DataAvailable;
+ const HintsScope hints_scope(GetValidator().Get(), pHints);
+
if (m_pLinearized) {
if (dwPage == m_pLinearized->GetFirstPageNo()) {
- DocAvailStatus nRet = CheckLinearizedFirstPage(dwPage, pHints);
+ DocAvailStatus nRet = CheckLinearizedFirstPage(dwPage);
if (nRet == DataAvailable)
m_pagesLoadState.insert(dwPage);
return nRet;
@@ -1496,7 +1497,7 @@ CPDF_DataAvail::DocAvailStatus CPDF_DataAvail::IsPageAvail(
}
if (m_bHaveAcroForm && !m_bAcroFormLoad) {
- if (!CheckAcroFormSubObject(pHints))
+ if (!CheckAcroFormSubObject())
return DataNotAvailable;
m_bAcroFormLoad = true;
}
@@ -1515,13 +1516,13 @@ CPDF_DataAvail::DocAvailStatus CPDF_DataAvail::IsPageAvail(
std::vector<CPDF_Object*> obj_array;
obj_array.push_back(m_pPageDict);
- if (!AreObjectsAvailable(obj_array, true, pHints, m_objs_array))
+ if (!AreObjectsAvailable(obj_array, true, m_objs_array))
return DataNotAvailable;
m_objs_array.clear();
} else {
std::vector<CPDF_Object*> new_objs_array;
- if (!AreObjectsAvailable(m_objs_array, false, pHints, new_objs_array)) {
+ if (!AreObjectsAvailable(m_objs_array, false, new_objs_array)) {
m_objs_array = new_objs_array;
return DataNotAvailable;
}
@@ -1531,7 +1532,7 @@ CPDF_DataAvail::DocAvailStatus CPDF_DataAvail::IsPageAvail(
}
if (!m_bAnnotsLoad) {
- if (!CheckPageAnnots(dwPage, pHints))
+ if (!CheckPageAnnots(dwPage))
return DataNotAvailable;
m_bAnnotsLoad = true;
}
@@ -1542,7 +1543,7 @@ CPDF_DataAvail::DocAvailStatus CPDF_DataAvail::IsPageAvail(
}
if (m_bNeedDownLoadResource) {
- if (!CheckResources(pHints))
+ if (!CheckResources())
return DataNotAvailable;
m_bNeedDownLoadResource = false;
}
@@ -1558,18 +1559,18 @@ CPDF_DataAvail::DocAvailStatus CPDF_DataAvail::IsPageAvail(
return DataAvailable;
}
-bool CPDF_DataAvail::CheckResources(DownloadHints* pHints) {
+bool CPDF_DataAvail::CheckResources() {
if (m_objs_array.empty()) {
std::vector<CPDF_Object*> obj_array;
obj_array.push_back(m_pPageResource);
- if (!AreObjectsAvailable(obj_array, true, pHints, m_objs_array))
+ if (!AreObjectsAvailable(obj_array, true, m_objs_array))
return false;
m_objs_array.clear();
return true;
}
std::vector<CPDF_Object*> new_objs_array;
- if (!AreObjectsAvailable(m_objs_array, false, pHints, new_objs_array)) {
+ if (!AreObjectsAvailable(m_objs_array, false, new_objs_array)) {
m_objs_array = new_objs_array;
return false;
}
@@ -1581,6 +1582,10 @@ CFX_RetainPtr<IFX_SeekableReadStream> CPDF_DataAvail::GetFileRead() const {
return m_pFileRead;
}
+CFX_RetainPtr<CPDF_ReadValidator> CPDF_DataAvail::GetValidator() const {
+ return m_pFileRead;
+}
+
int CPDF_DataAvail::GetPageCount() const {
if (m_pLinearized)
return m_pLinearized->GetPageCount();
@@ -1623,6 +1628,8 @@ CPDF_DataAvail::DocFormStatus CPDF_DataAvail::IsFormAvail(
DownloadHints* pHints) {
if (!m_pDocument)
return FormAvailable;
+
+ const HintsScope hints_scope(GetValidator().Get(), pHints);
if (m_pLinearized) {
DocAvailStatus nDocStatus = CheckLinearizedData(pHints);
if (nDocStatus == DataError)
@@ -1645,7 +1652,7 @@ CPDF_DataAvail::DocFormStatus CPDF_DataAvail::IsFormAvail(
}
std::vector<CPDF_Object*> new_objs_array;
- if (!AreObjectsAvailable(m_objs_array, false, pHints, new_objs_array)) {
+ if (!AreObjectsAvailable(m_objs_array, false, new_objs_array)) {
m_objs_array = new_objs_array;
return FormNotAvailable;
}
@@ -1664,7 +1671,7 @@ bool CPDF_DataAvail::ValidatePage(uint32_t dwPage) {
std::vector<CPDF_Object*> obj_array;
obj_array.push_back(pPageDict);
std::vector<CPDF_Object*> dummy;
- return AreObjectsAvailable(obj_array, true, nullptr, dummy);
+ return AreObjectsAvailable(obj_array, true, dummy);
}
bool CPDF_DataAvail::ValidateForm() {
@@ -1677,7 +1684,7 @@ bool CPDF_DataAvail::ValidateForm() {
std::vector<CPDF_Object*> obj_array;
obj_array.push_back(pAcroForm);
std::vector<CPDF_Object*> dummy;
- return AreObjectsAvailable(obj_array, true, nullptr, dummy);
+ return AreObjectsAvailable(obj_array, true, dummy);
}
CPDF_DataAvail::PageNode::PageNode() : m_type(PDF_PAGENODE_UNKNOWN) {}
diff --git a/core/fpdfapi/parser/cpdf_data_avail.h b/core/fpdfapi/parser/cpdf_data_avail.h
index f19b36d375..b857c659d9 100644
--- a/core/fpdfapi/parser/cpdf_data_avail.h
+++ b/core/fpdfapi/parser/cpdf_data_avail.h
@@ -111,6 +111,7 @@ class CPDF_DataAvail final {
CFX_RetainPtr<IFX_SeekableReadStream> GetFileRead() const;
int GetPageCount() const;
CPDF_Dictionary* GetPage(int index);
+ CFX_RetainPtr<CPDF_ReadValidator> GetValidator() const;
protected:
class PageNode {
@@ -128,7 +129,6 @@ class CPDF_DataAvail final {
uint32_t GetObjectSize(uint32_t objnum, FX_FILESIZE& offset);
bool AreObjectsAvailable(std::vector<CPDF_Object*>& obj_array,
bool bParsePage,
- DownloadHints* pHints,
std::vector<CPDF_Object*>& ret_array);
bool CheckDocStatus(DownloadHints* pHints);
bool CheckHeader(DownloadHints* pHints);
@@ -142,10 +142,10 @@ class CPDF_DataAvail final {
bool CheckInfo(DownloadHints* pHints);
bool CheckPages(DownloadHints* pHints);
bool CheckPage(DownloadHints* pHints);
- bool CheckResources(DownloadHints* pHints);
+ bool CheckResources();
bool CheckAnnots(DownloadHints* pHints);
bool CheckAcroForm(DownloadHints* pHints);
- bool CheckAcroFormSubObject(DownloadHints* pHints);
+ bool CheckAcroFormSubObject();
bool CheckTrailerAppend(DownloadHints* pHints);
bool CheckPageStatus(DownloadHints* pHints);
bool CheckAllCrossRefStream(DownloadHints* pHints);
@@ -168,10 +168,9 @@ class CPDF_DataAvail final {
bool LoadAllXref(DownloadHints* pHints);
bool LoadAllFile(DownloadHints* pHints);
DocAvailStatus CheckLinearizedData(DownloadHints* pHints);
- bool CheckPageAnnots(uint32_t dwPage, DownloadHints* pHints);
+ bool CheckPageAnnots(uint32_t dwPage);
- DocAvailStatus CheckLinearizedFirstPage(uint32_t dwPage,
- DownloadHints* pHints);
+ DocAvailStatus CheckLinearizedFirstPage(uint32_t dwPage);
bool CheckPage(uint32_t dwPage, DownloadHints* pHints);
bool LoadDocPages(DownloadHints* pHints);
bool LoadDocPage(uint32_t dwPage, DownloadHints* pHints);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 12:02:46 +0000