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-rw-r--r--core/fpdfapi/parser/cpdf_data_avail.cpp26
-rw-r--r--core/fpdfapi/parser/cpdf_data_avail.h6
-rw-r--r--core/fpdfapi/parser/cpdf_read_validator.cpp55
-rw-r--r--core/fpdfapi/parser/cpdf_read_validator.h6
-rw-r--r--core/fpdfapi/parser/cpdf_read_validator_unittest.cpp4
5 files changed, 46 insertions, 51 deletions
diff --git a/core/fpdfapi/parser/cpdf_data_avail.cpp b/core/fpdfapi/parser/cpdf_data_avail.cpp
index 8b378aab0e..b2415915c4 100644
--- a/core/fpdfapi/parser/cpdf_data_avail.cpp
+++ b/core/fpdfapi/parser/cpdf_data_avail.cpp
@@ -322,11 +322,10 @@ bool CPDF_DataAvail::CheckPageStatus() {
}
bool CPDF_DataAvail::LoadAllFile() {
- if (GetValidator()->IsWholeFileAvailable()) {
+ if (GetValidator()->CheckWholeFileAndRequestIfUnavailable()) {
m_docStatus = PDF_DATAAVAIL_DONE;
return true;
}
- GetValidator()->ScheduleDownloadWholeFile();
return false;
}
@@ -590,18 +589,17 @@ bool CPDF_DataAvail::CheckFirstPage() {
dwEnd = (uint32_t)m_dwFileLen;
const FX_FILESIZE start_pos = m_dwFileLen > 1024 ? 1024 : m_dwFileLen;
- const uint32_t data_size = dwEnd > 1024 ? dwEnd - 1024 : 0;
- if (!GetValidator()->IsDataRangeAvailable(start_pos, data_size)) {
- GetValidator()->ScheduleDataDownload(start_pos, data_size);
+ const size_t data_size = dwEnd > 1024 ? static_cast<size_t>(dwEnd - 1024) : 0;
+ if (!GetValidator()->CheckDataRangeAndRequestIfUnavailable(start_pos,
+ data_size))
return false;
- }
m_docStatus =
m_bSupportHintTable ? PDF_DATAAVAIL_HINTTABLE : PDF_DATAAVAIL_DONE;
return true;
}
-bool CPDF_DataAvail::IsDataAvail(FX_FILESIZE offset, uint32_t size) {
+bool CPDF_DataAvail::IsDataAvail(FX_FILESIZE offset, size_t size) {
if (offset < 0 || offset > m_dwFileLen)
return true;
@@ -613,10 +611,9 @@ bool CPDF_DataAvail::IsDataAvail(FX_FILESIZE offset, uint32_t size) {
else
size += 512;
- if (!GetValidator()->IsDataRangeAvailable(offset, size)) {
- GetValidator()->ScheduleDataDownload(offset, size);
+ if (!GetValidator()->CheckDataRangeAndRequestIfUnavailable(offset, size))
return false;
- }
+
return true;
}
@@ -1207,17 +1204,14 @@ CPDF_DataAvail::DocAvailStatus CPDF_DataAvail::CheckLinearizedData() {
return DataError;
if (!m_bMainXRefLoadTried) {
- FX_SAFE_UINT32 data_size = m_dwFileLen;
+ FX_SAFE_SIZE_T data_size = m_dwFileLen;
data_size -= m_pLinearized->GetLastXRefOffset();
if (!data_size.IsValid())
return DataError;
- if (!GetValidator()->IsDataRangeAvailable(
- m_pLinearized->GetLastXRefOffset(), data_size.ValueOrDie())) {
- GetValidator()->ScheduleDataDownload(m_pLinearized->GetLastXRefOffset(),
- data_size.ValueOrDie());
+ if (!GetValidator()->CheckDataRangeAndRequestIfUnavailable(
+ m_pLinearized->GetLastXRefOffset(), data_size.ValueOrDie()))
return DataNotAvailable;
- }
CPDF_Parser::Error eRet =
m_pDocument->GetParser()->LoadLinearizedMainXRefTable();
diff --git a/core/fpdfapi/parser/cpdf_data_avail.h b/core/fpdfapi/parser/cpdf_data_avail.h
index ab7f045fec..24b5b7f357 100644
--- a/core/fpdfapi/parser/cpdf_data_avail.h
+++ b/core/fpdfapi/parser/cpdf_data_avail.h
@@ -84,13 +84,13 @@ class CPDF_DataAvail final {
class FileAvail {
public:
virtual ~FileAvail();
- virtual bool IsDataAvail(FX_FILESIZE offset, uint32_t size) = 0;
+ virtual bool IsDataAvail(FX_FILESIZE offset, size_t size) = 0;
};
class DownloadHints {
public:
virtual ~DownloadHints();
- virtual void AddSegment(FX_FILESIZE offset, uint32_t size) = 0;
+ virtual void AddSegment(FX_FILESIZE offset, size_t size) = 0;
};
CPDF_DataAvail(FileAvail* pFileAvail,
@@ -98,7 +98,7 @@ class CPDF_DataAvail final {
bool bSupportHintTable);
~CPDF_DataAvail();
- bool IsDataAvail(FX_FILESIZE offset, uint32_t size);
+ bool IsDataAvail(FX_FILESIZE offset, size_t size);
DocAvailStatus IsDocAvail(DownloadHints* pHints);
void SetDocument(CPDF_Document* pDoc);
DocAvailStatus IsPageAvail(uint32_t dwPage, DownloadHints* pHints);
diff --git a/core/fpdfapi/parser/cpdf_read_validator.cpp b/core/fpdfapi/parser/cpdf_read_validator.cpp
index bf086008ca..0f7eaa70a2 100644
--- a/core/fpdfapi/parser/cpdf_read_validator.cpp
+++ b/core/fpdfapi/parser/cpdf_read_validator.cpp
@@ -59,22 +59,18 @@ void CPDF_ReadValidator::ResetErrors() {
bool CPDF_ReadValidator::ReadBlock(void* buffer,
FX_FILESIZE offset,
size_t size) {
- // correct values checks:
- if (!pdfium::base::IsValueInRangeForNumericType<uint32_t>(size))
- return false;
-
FX_SAFE_FILESIZE end_offset = offset;
end_offset += size;
if (!end_offset.IsValid() || end_offset.ValueOrDie() > GetSize())
return false;
- if (!file_avail_ ||
- file_avail_->IsDataAvail(offset, static_cast<uint32_t>(size))) {
- if (file_read_->ReadBlock(buffer, offset, size))
- return true;
- read_error_ = true;
- }
- has_unavailable_data_ = true;
+ if (!CheckDataRangeAndRequestIfUnavailable(offset, size))
+ return false;
+
+ if (file_read_->ReadBlock(buffer, offset, size))
+ return true;
+
+ read_error_ = true;
ScheduleDownload(offset, size);
return false;
}
@@ -84,13 +80,7 @@ FX_FILESIZE CPDF_ReadValidator::GetSize() {
}
void CPDF_ReadValidator::ScheduleDownload(FX_FILESIZE offset, size_t size) {
- const FX_SAFE_UINT32 safe_size = size;
- if (safe_size.IsValid())
- ScheduleDataDownload(offset, safe_size.ValueOrDie());
-}
-
-void CPDF_ReadValidator::ScheduleDataDownload(FX_FILESIZE offset,
- uint32_t size) {
+ has_unavailable_data_ = true;
if (!hints_ || size == 0)
return;
@@ -104,7 +94,7 @@ void CPDF_ReadValidator::ScheduleDataDownload(FX_FILESIZE offset,
end_segment_offset =
std::min(GetSize(), AlignUp(end_segment_offset.ValueOrDie()));
- FX_SAFE_UINT32 segment_size = end_segment_offset;
+ FX_SAFE_SIZE_T segment_size = end_segment_offset;
segment_size -= start_segment_offset;
if (!segment_size.IsValid()) {
NOTREACHED();
@@ -113,19 +103,30 @@ void CPDF_ReadValidator::ScheduleDataDownload(FX_FILESIZE offset,
hints_->AddSegment(start_segment_offset, segment_size.ValueOrDie());
}
-void CPDF_ReadValidator::ScheduleDownloadWholeFile() {
- const FX_SAFE_UINT32 safe_size = GetSize();
- if (safe_size.IsValid())
- ScheduleDataDownload(0, safe_size.ValueOrDie());
-}
-
bool CPDF_ReadValidator::IsDataRangeAvailable(FX_FILESIZE offset,
- uint32_t size) const {
+ size_t size) const {
return !file_avail_ || file_avail_->IsDataAvail(offset, size);
}
bool CPDF_ReadValidator::IsWholeFileAvailable() {
- const FX_SAFE_UINT32 safe_size = GetSize();
+ const FX_SAFE_SIZE_T safe_size = GetSize();
return safe_size.IsValid() ? IsDataRangeAvailable(0, safe_size.ValueOrDie())
: false;
}
+
+bool CPDF_ReadValidator::CheckDataRangeAndRequestIfUnavailable(
+ FX_FILESIZE offset,
+ size_t size) {
+ if (IsDataRangeAvailable(offset, size))
+ return true;
+
+ ScheduleDownload(offset, size);
+ return false;
+}
+
+bool CPDF_ReadValidator::CheckWholeFileAndRequestIfUnavailable() {
+ const FX_SAFE_SIZE_T safe_size = GetSize();
+ return safe_size.IsValid()
+ ? CheckDataRangeAndRequestIfUnavailable(0, safe_size.ValueOrDie())
+ : false;
+}
diff --git a/core/fpdfapi/parser/cpdf_read_validator.h b/core/fpdfapi/parser/cpdf_read_validator.h
index 0bbf6ab924..0fb15b20f8 100644
--- a/core/fpdfapi/parser/cpdf_read_validator.h
+++ b/core/fpdfapi/parser/cpdf_read_validator.h
@@ -37,11 +37,10 @@ class CPDF_ReadValidator : public IFX_SeekableReadStream {
void ResetErrors();
- bool IsDataRangeAvailable(FX_FILESIZE offset, uint32_t size) const;
bool IsWholeFileAvailable();
- void ScheduleDataDownload(FX_FILESIZE offset, uint32_t size);
- void ScheduleDownloadWholeFile();
+ bool CheckDataRangeAndRequestIfUnavailable(FX_FILESIZE offset, size_t size);
+ bool CheckWholeFileAndRequestIfUnavailable();
// IFX_SeekableReadStream overrides:
bool ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override;
@@ -54,6 +53,7 @@ class CPDF_ReadValidator : public IFX_SeekableReadStream {
private:
void ScheduleDownload(FX_FILESIZE offset, size_t size);
+ bool IsDataRangeAvailable(FX_FILESIZE offset, size_t size) const;
RetainPtr<IFX_SeekableReadStream> file_read_;
UnownedPtr<CPDF_DataAvail::FileAvail> file_avail_;
diff --git a/core/fpdfapi/parser/cpdf_read_validator_unittest.cpp b/core/fpdfapi/parser/cpdf_read_validator_unittest.cpp
index 308704f762..13ace078d3 100644
--- a/core/fpdfapi/parser/cpdf_read_validator_unittest.cpp
+++ b/core/fpdfapi/parser/cpdf_read_validator_unittest.cpp
@@ -26,7 +26,7 @@ class MockFileAvail : public CPDF_DataAvail::FileAvail {
MockFileAvail() : available_range_(0, 0) {}
~MockFileAvail() override {}
- bool IsDataAvail(FX_FILESIZE offset, uint32_t size) override {
+ bool IsDataAvail(FX_FILESIZE offset, size_t size) override {
return available_range_.first <= offset &&
available_range_.second >= static_cast<FX_FILESIZE>(offset + size);
}
@@ -48,7 +48,7 @@ class MockDownloadHints : public CPDF_DataAvail::DownloadHints {
MockDownloadHints() : last_requested_range_(0, 0) {}
~MockDownloadHints() override {}
- void AddSegment(FX_FILESIZE offset, uint32_t size) override {
+ void AddSegment(FX_FILESIZE offset, size_t size) override {
last_requested_range_.first = offset;
last_requested_range_.second = offset + size;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-16 05:19:17 +0000