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-rw-r--r--core/fpdfapi/page/cpdf_contentparser.cpp15
-rw-r--r--core/fpdfapi/page/cpdf_contentparser.h1
-rw-r--r--core/fpdfapi/page/cpdf_formobject.cpp7
-rw-r--r--core/fpdfapi/page/cpdf_formobject.h4
-rw-r--r--core/fpdfapi/page/cpdf_imageobject.cpp5
-rw-r--r--core/fpdfapi/page/cpdf_imageobject.h1
-rw-r--r--core/fpdfapi/page/cpdf_pageobject.cpp7
-rw-r--r--core/fpdfapi/page/cpdf_pageobject.h12
-rw-r--r--core/fpdfapi/page/cpdf_pathobject.cpp5
-rw-r--r--core/fpdfapi/page/cpdf_pathobject.h1
-rw-r--r--core/fpdfapi/page/cpdf_shadingobject.cpp5
-rw-r--r--core/fpdfapi/page/cpdf_shadingobject.h4
-rw-r--r--core/fpdfapi/page/cpdf_streamcontentparser.cpp41
-rw-r--r--core/fpdfapi/page/cpdf_streamcontentparser.h7
-rw-r--r--core/fpdfapi/page/cpdf_textobject.cpp5
-rw-r--r--core/fpdfapi/page/cpdf_textobject.h1
16 files changed, 93 insertions, 28 deletions
diff --git a/core/fpdfapi/page/cpdf_contentparser.cpp b/core/fpdfapi/page/cpdf_contentparser.cpp
index 77cfade1da..2bb376e841 100644
--- a/core/fpdfapi/page/cpdf_contentparser.cpp
+++ b/core/fpdfapi/page/cpdf_contentparser.cpp
@@ -164,11 +164,13 @@ CPDF_ContentParser::Stage CPDF_ContentParser::PrepareContent() {
FX_SAFE_UINT32 safeSize = 0;
for (const auto& stream : m_StreamArray) {
+ m_StreamSegmentOffsets.push_back(safeSize.ValueOrDie());
+
safeSize += stream->GetSize();
safeSize += 1;
+ if (!safeSize.IsValid())
+ return Stage::kComplete;
}
- if (!safeSize.IsValid())
- return Stage::kComplete;
m_Size = safeSize.ValueOrDie();
m_pData.Reset(
@@ -198,9 +200,12 @@ CPDF_ContentParser::Stage CPDF_ContentParser::Parse() {
if (m_CurrentOffset >= m_Size)
return Stage::kCheckClip;
- m_CurrentOffset +=
- m_pParser->Parse(m_pData.Get() + m_CurrentOffset,
- m_Size - m_CurrentOffset, PARSE_STEP_LIMIT);
+ if (m_StreamSegmentOffsets.empty())
+ m_StreamSegmentOffsets.push_back(0);
+
+ m_CurrentOffset += m_pParser->Parse(m_pData.Get() + m_CurrentOffset,
+ m_Size - m_CurrentOffset,
+ PARSE_STEP_LIMIT, m_StreamSegmentOffsets);
return Stage::kParse;
}
diff --git a/core/fpdfapi/page/cpdf_contentparser.h b/core/fpdfapi/page/cpdf_contentparser.h
index f9b491defa..b5db5d5e13 100644
--- a/core/fpdfapi/page/cpdf_contentparser.h
+++ b/core/fpdfapi/page/cpdf_contentparser.h
@@ -58,6 +58,7 @@ class CPDF_ContentParser {
UnownedPtr<CPDF_Type3Char> m_pType3Char; // Only used when parsing forms.
RetainPtr<CPDF_StreamAcc> m_pSingleStream;
std::vector<RetainPtr<CPDF_StreamAcc>> m_StreamArray;
+ std::vector<uint32_t> m_StreamSegmentOffsets;
MaybeOwned<uint8_t, FxFreeDeleter> m_pData;
uint32_t m_nStreams = 0;
uint32_t m_Size = 0;
diff --git a/core/fpdfapi/page/cpdf_formobject.cpp b/core/fpdfapi/page/cpdf_formobject.cpp
index eca92ca0ff..22ac0d3823 100644
--- a/core/fpdfapi/page/cpdf_formobject.cpp
+++ b/core/fpdfapi/page/cpdf_formobject.cpp
@@ -10,9 +10,12 @@
#include "core/fpdfapi/page/cpdf_form.h"
-CPDF_FormObject::CPDF_FormObject(std::unique_ptr<CPDF_Form> pForm,
+CPDF_FormObject::CPDF_FormObject(int32_t content_stream,
+ std::unique_ptr<CPDF_Form> pForm,
const CFX_Matrix& matrix)
- : m_pForm(std::move(pForm)), m_FormMatrix(matrix) {}
+ : CPDF_PageObject(content_stream),
+ m_pForm(std::move(pForm)),
+ m_FormMatrix(matrix) {}
CPDF_FormObject::~CPDF_FormObject() {}
diff --git a/core/fpdfapi/page/cpdf_formobject.h b/core/fpdfapi/page/cpdf_formobject.h
index c723cc0eaf..b229dce444 100644
--- a/core/fpdfapi/page/cpdf_formobject.h
+++ b/core/fpdfapi/page/cpdf_formobject.h
@@ -16,7 +16,9 @@ class CPDF_Form;
class CPDF_FormObject : public CPDF_PageObject {
public:
- CPDF_FormObject(std::unique_ptr<CPDF_Form> pForm, const CFX_Matrix& matrix);
+ CPDF_FormObject(int32_t content_stream,
+ std::unique_ptr<CPDF_Form> pForm,
+ const CFX_Matrix& matrix);
~CPDF_FormObject() override;
// CPDF_PageObject:
diff --git a/core/fpdfapi/page/cpdf_imageobject.cpp b/core/fpdfapi/page/cpdf_imageobject.cpp
index 3b5a740155..516a6e8cad 100644
--- a/core/fpdfapi/page/cpdf_imageobject.cpp
+++ b/core/fpdfapi/page/cpdf_imageobject.cpp
@@ -12,7 +12,10 @@
#include "core/fpdfapi/page/cpdf_image.h"
#include "core/fpdfapi/parser/cpdf_document.h"
-CPDF_ImageObject::CPDF_ImageObject() {}
+CPDF_ImageObject::CPDF_ImageObject(int32_t content_stream)
+ : CPDF_PageObject(content_stream) {}
+
+CPDF_ImageObject::CPDF_ImageObject() : CPDF_ImageObject(kNoContentStream) {}
CPDF_ImageObject::~CPDF_ImageObject() {
MaybePurgeCache();
diff --git a/core/fpdfapi/page/cpdf_imageobject.h b/core/fpdfapi/page/cpdf_imageobject.h
index 16a506e537..d54ef8d818 100644
--- a/core/fpdfapi/page/cpdf_imageobject.h
+++ b/core/fpdfapi/page/cpdf_imageobject.h
@@ -16,6 +16,7 @@ class CPDF_Image;
class CPDF_ImageObject : public CPDF_PageObject {
public:
+ explicit CPDF_ImageObject(int32_t content_stream);
CPDF_ImageObject();
~CPDF_ImageObject() override;
diff --git a/core/fpdfapi/page/cpdf_pageobject.cpp b/core/fpdfapi/page/cpdf_pageobject.cpp
index 8bb5bf5978..604309f6e6 100644
--- a/core/fpdfapi/page/cpdf_pageobject.cpp
+++ b/core/fpdfapi/page/cpdf_pageobject.cpp
@@ -6,7 +6,12 @@
#include "core/fpdfapi/page/cpdf_pageobject.h"
-CPDF_PageObject::CPDF_PageObject() : m_bDirty(false) {}
+constexpr int32_t CPDF_PageObject::kNoContentStream;
+
+CPDF_PageObject::CPDF_PageObject(int32_t content_stream)
+ : m_bDirty(false), m_ContentStream(content_stream) {}
+
+CPDF_PageObject::CPDF_PageObject() : CPDF_PageObject(kNoContentStream) {}
CPDF_PageObject::~CPDF_PageObject() {}
diff --git a/core/fpdfapi/page/cpdf_pageobject.h b/core/fpdfapi/page/cpdf_pageobject.h
index d23cd971f8..39e7629541 100644
--- a/core/fpdfapi/page/cpdf_pageobject.h
+++ b/core/fpdfapi/page/cpdf_pageobject.h
@@ -28,6 +28,9 @@ class CPDF_PageObject : public CPDF_GraphicStates {
FORM,
};
+ static constexpr int32_t kNoContentStream = -1;
+
+ explicit CPDF_PageObject(int32_t content_stream);
CPDF_PageObject();
~CPDF_PageObject() override;
@@ -59,6 +62,14 @@ class CPDF_PageObject : public CPDF_GraphicStates {
}
FX_RECT GetBBox(const CFX_Matrix* pMatrix) const;
+ // Get what content stream the object was parsed from in its page. This number
+ // is the index of the content stream in the "Contents" array, or 0 if there
+ // is a single content stream. If the object is newly created,
+ // kNoContentStream is returned.
+ // If the object is spread among more than one content stream, this is the
+ // index of the last stream.
+ int32_t GetContentStream() const { return m_ContentStream; }
+
float m_Left;
float m_Right;
float m_Top;
@@ -73,6 +84,7 @@ class CPDF_PageObject : public CPDF_GraphicStates {
void operator=(const CPDF_PageObject& src) = delete;
bool m_bDirty;
+ int32_t m_ContentStream;
};
#endif // CORE_FPDFAPI_PAGE_CPDF_PAGEOBJECT_H_
diff --git a/core/fpdfapi/page/cpdf_pathobject.cpp b/core/fpdfapi/page/cpdf_pathobject.cpp
index d8c2cb8741..0882dc17f0 100644
--- a/core/fpdfapi/page/cpdf_pathobject.cpp
+++ b/core/fpdfapi/page/cpdf_pathobject.cpp
@@ -6,7 +6,10 @@
#include "core/fpdfapi/page/cpdf_pathobject.h"
-CPDF_PathObject::CPDF_PathObject() : m_FillType(0), m_bStroke(false) {}
+CPDF_PathObject::CPDF_PathObject(int32_t content_stream)
+ : CPDF_PageObject(content_stream), m_FillType(0), m_bStroke(false) {}
+
+CPDF_PathObject::CPDF_PathObject() : CPDF_PathObject(kNoContentStream) {}
CPDF_PathObject::~CPDF_PathObject() {}
diff --git a/core/fpdfapi/page/cpdf_pathobject.h b/core/fpdfapi/page/cpdf_pathobject.h
index 58499b5a53..5155c40c3d 100644
--- a/core/fpdfapi/page/cpdf_pathobject.h
+++ b/core/fpdfapi/page/cpdf_pathobject.h
@@ -14,6 +14,7 @@
class CPDF_PathObject : public CPDF_PageObject {
public:
+ explicit CPDF_PathObject(int32_t content_stream);
CPDF_PathObject();
~CPDF_PathObject() override;
diff --git a/core/fpdfapi/page/cpdf_shadingobject.cpp b/core/fpdfapi/page/cpdf_shadingobject.cpp
index 1b16ac4862..725e2e4591 100644
--- a/core/fpdfapi/page/cpdf_shadingobject.cpp
+++ b/core/fpdfapi/page/cpdf_shadingobject.cpp
@@ -9,9 +9,10 @@
#include "core/fpdfapi/page/cpdf_shadingpattern.h"
#include "core/fpdfapi/parser/cpdf_document.h"
-CPDF_ShadingObject::CPDF_ShadingObject(CPDF_ShadingPattern* pattern,
+CPDF_ShadingObject::CPDF_ShadingObject(int32_t content_stream,
+ CPDF_ShadingPattern* pattern,
const CFX_Matrix& matrix)
- : m_pShading(pattern), m_Matrix(matrix) {}
+ : CPDF_PageObject(content_stream), m_pShading(pattern), m_Matrix(matrix) {}
CPDF_ShadingObject::~CPDF_ShadingObject() {}
diff --git a/core/fpdfapi/page/cpdf_shadingobject.h b/core/fpdfapi/page/cpdf_shadingobject.h
index 80e062c729..69b606749d 100644
--- a/core/fpdfapi/page/cpdf_shadingobject.h
+++ b/core/fpdfapi/page/cpdf_shadingobject.h
@@ -15,7 +15,9 @@ class CPDF_ShadingPattern;
class CPDF_ShadingObject : public CPDF_PageObject {
public:
- CPDF_ShadingObject(CPDF_ShadingPattern* pattern, const CFX_Matrix& matrix);
+ CPDF_ShadingObject(int32_t content_stream,
+ CPDF_ShadingPattern* pattern,
+ const CFX_Matrix& matrix);
~CPDF_ShadingObject() override;
// CPDF_PageObject:
diff --git a/core/fpdfapi/page/cpdf_streamcontentparser.cpp b/core/fpdfapi/page/cpdf_streamcontentparser.cpp
index 7562fb37a6..0cc81f1e9b 100644
--- a/core/fpdfapi/page/cpdf_streamcontentparser.cpp
+++ b/core/fpdfapi/page/cpdf_streamcontentparser.cpp
@@ -785,7 +785,8 @@ void CPDF_StreamContentParser::AddForm(CPDF_Stream* pStream) {
CFX_Matrix matrix = m_pCurStates->m_CTM;
matrix.Concat(m_mtContentToUser);
- auto pFormObj = pdfium::MakeUnique<CPDF_FormObject>(std::move(form), matrix);
+ auto pFormObj = pdfium::MakeUnique<CPDF_FormObject>(GetCurrentStreamIndex(),
+ std::move(form), matrix);
if (!m_pObjectHolder->BackgroundAlphaNeeded() &&
pFormObj->form()->BackgroundAlphaNeeded()) {
m_pObjectHolder->SetBackgroundAlphaNeeded(true);
@@ -800,14 +801,16 @@ CPDF_ImageObject* CPDF_StreamContentParser::AddImage(
if (!pStream)
return nullptr;
- auto pImageObj = pdfium::MakeUnique<CPDF_ImageObject>();
+ auto pImageObj =
+ pdfium::MakeUnique<CPDF_ImageObject>(GetCurrentStreamIndex());
pImageObj->SetImage(
pdfium::MakeRetain<CPDF_Image>(m_pDocument.Get(), std::move(pStream)));
return AddImageObject(std::move(pImageObj));
}
CPDF_ImageObject* CPDF_StreamContentParser::AddImage(uint32_t streamObjNum) {
- auto pImageObj = pdfium::MakeUnique<CPDF_ImageObject>();
+ auto pImageObj =
+ pdfium::MakeUnique<CPDF_ImageObject>(GetCurrentStreamIndex());
pImageObj->SetImage(m_pDocument->LoadImageFromPageData(streamObjNum));
return AddImageObject(std::move(pImageObj));
}
@@ -817,7 +820,8 @@ CPDF_ImageObject* CPDF_StreamContentParser::AddImage(
if (!pImage)
return nullptr;
- auto pImageObj = pdfium::MakeUnique<CPDF_ImageObject>();
+ auto pImageObj =
+ pdfium::MakeUnique<CPDF_ImageObject>(GetCurrentStreamIndex());
pImageObj->SetImage(
m_pDocument->GetPageData()->GetImage(pImage->GetStream()->GetObjNum()));
@@ -1084,7 +1088,8 @@ void CPDF_StreamContentParser::Handle_ShadeFill() {
CFX_Matrix matrix = m_pCurStates->m_CTM;
matrix.Concat(m_mtContentToUser);
- auto pObj = pdfium::MakeUnique<CPDF_ShadingObject>(pShading, matrix);
+ auto pObj = pdfium::MakeUnique<CPDF_ShadingObject>(GetCurrentStreamIndex(),
+ pShading, matrix);
SetGraphicStates(pObj.get(), false, false, false);
CFX_FloatRect bbox =
pObj->m_ClipPath.HasRef() ? pObj->m_ClipPath.GetClipBox() : m_BBox;
@@ -1219,7 +1224,7 @@ void CPDF_StreamContentParser::AddTextObject(ByteString* pStrs,
pFont->IsType3Font() ? TextRenderingMode::MODE_FILL
: m_pCurStates->m_TextState.GetTextMode();
{
- auto pText = pdfium::MakeUnique<CPDF_TextObject>();
+ auto pText = pdfium::MakeUnique<CPDF_TextObject>(GetCurrentStreamIndex());
m_pLastTextObject = pText.get();
SetGraphicStates(m_pLastTextObject.Get(), true, true, true);
if (TextRenderingModeIsStrokeMode(text_mode)) {
@@ -1258,6 +1263,12 @@ void CPDF_StreamContentParser::AddTextObject(ByteString* pStrs,
}
}
+int32_t CPDF_StreamContentParser::GetCurrentStreamIndex() {
+ auto it = std::upper_bound(m_StreamStartOffsets.begin(),
+ m_StreamStartOffsets.end(), m_pSyntax->GetPos());
+ return (it - m_StreamStartOffsets.begin()) - 1;
+}
+
void CPDF_StreamContentParser::Handle_ShowText() {
ByteString str = GetString(0);
if (str.IsEmpty()) {
@@ -1456,7 +1467,8 @@ void CPDF_StreamContentParser::AddPathObject(int FillType, bool bStroke) {
CFX_Matrix matrix = m_pCurStates->m_CTM;
matrix.Concat(m_mtContentToUser);
if (bStroke || FillType) {
- auto pPathObj = pdfium::MakeUnique<CPDF_PathObject>();
+ auto pPathObj =
+ pdfium::MakeUnique<CPDF_PathObject>(GetCurrentStreamIndex());
pPathObj->m_bStroke = bStroke;
pPathObj->m_FillType = FillType;
pPathObj->m_Path = Path;
@@ -1474,22 +1486,27 @@ void CPDF_StreamContentParser::AddPathObject(int FillType, bool bStroke) {
}
}
-uint32_t CPDF_StreamContentParser::Parse(const uint8_t* pData,
- uint32_t dwSize,
- uint32_t max_cost) {
+uint32_t CPDF_StreamContentParser::Parse(
+ const uint8_t* pData,
+ uint32_t dwSize,
+ uint32_t max_cost,
+ const std::vector<uint32_t>& stream_start_offsets) {
if (m_ParsedSet->size() > kMaxFormLevel ||
pdfium::ContainsKey(*m_ParsedSet, pData))
return dwSize;
+ m_StreamStartOffsets = stream_start_offsets;
+
pdfium::ScopedSetInsertion<const uint8_t*> scopedInsert(m_ParsedSet.Get(),
pData);
- uint32_t InitObjCount = m_pObjectHolder->GetPageObjectList()->size();
+ uint32_t init_obj_count = m_pObjectHolder->GetPageObjectList()->size();
CPDF_StreamParser syntax(pdfium::make_span(pData, dwSize),
m_pDocument->GetByteStringPool());
CPDF_StreamParserAutoClearer auto_clearer(&m_pSyntax, &syntax);
while (1) {
- uint32_t cost = m_pObjectHolder->GetPageObjectList()->size() - InitObjCount;
+ uint32_t cost =
+ m_pObjectHolder->GetPageObjectList()->size() - init_obj_count;
if (max_cost && cost >= max_cost) {
break;
}
diff --git a/core/fpdfapi/page/cpdf_streamcontentparser.h b/core/fpdfapi/page/cpdf_streamcontentparser.h
index 438be024cc..adcb2a5b47 100644
--- a/core/fpdfapi/page/cpdf_streamcontentparser.h
+++ b/core/fpdfapi/page/cpdf_streamcontentparser.h
@@ -43,7 +43,10 @@ class CPDF_StreamContentParser {
std::set<const uint8_t*>* parsedSet);
~CPDF_StreamContentParser();
- uint32_t Parse(const uint8_t* pData, uint32_t dwSize, uint32_t max_cost);
+ uint32_t Parse(const uint8_t* pData,
+ uint32_t dwSize,
+ uint32_t max_cost,
+ const std::vector<uint32_t>& stream_start_offsets);
CPDF_PageObjectHolder* GetPageObjectHolder() const {
return m_pObjectHolder.Get();
}
@@ -127,6 +130,7 @@ class CPDF_StreamContentParser {
std::vector<float> GetColors() const;
std::vector<float> GetNamedColors() const;
+ int32_t GetCurrentStreamIndex();
void Handle_CloseFillStrokePath();
void Handle_FillStrokePath();
@@ -230,6 +234,7 @@ class CPDF_StreamContentParser {
std::vector<std::unique_ptr<CPDF_AllStates>> m_StateStack;
float m_Type3Data[6];
ContentParam m_ParamBuf[kParamBufSize];
+ std::vector<uint32_t> m_StreamStartOffsets;
};
#endif // CORE_FPDFAPI_PAGE_CPDF_STREAMCONTENTPARSER_H_
diff --git a/core/fpdfapi/page/cpdf_textobject.cpp b/core/fpdfapi/page/cpdf_textobject.cpp
index 36a4722773..e678d5fc10 100644
--- a/core/fpdfapi/page/cpdf_textobject.cpp
+++ b/core/fpdfapi/page/cpdf_textobject.cpp
@@ -18,7 +18,10 @@ CPDF_TextObjectItem::CPDF_TextObjectItem() : m_CharCode(0) {}
CPDF_TextObjectItem::~CPDF_TextObjectItem() = default;
-CPDF_TextObject::CPDF_TextObject() {}
+CPDF_TextObject::CPDF_TextObject(int32_t content_stream)
+ : CPDF_PageObject(content_stream) {}
+
+CPDF_TextObject::CPDF_TextObject() : CPDF_TextObject(kNoContentStream) {}
CPDF_TextObject::~CPDF_TextObject() {
// Move m_CharCodes to a local variable so it will be captured in crash dumps,
diff --git a/core/fpdfapi/page/cpdf_textobject.h b/core/fpdfapi/page/cpdf_textobject.h
index a6fc62369c..d3b6dcc3de 100644
--- a/core/fpdfapi/page/cpdf_textobject.h
+++ b/core/fpdfapi/page/cpdf_textobject.h
@@ -25,6 +25,7 @@ class CPDF_TextObjectItem {
class CPDF_TextObject : public CPDF_PageObject {
public:
+ explicit CPDF_TextObject(int32_t content_stream);
CPDF_TextObject();
~CPDF_TextObject() override;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 02:55:04 +0000