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-rw-r--r--core/fpdfapi/fpdf_parser/cpdf_array.cpp23
-rw-r--r--core/fpdfapi/fpdf_parser/cpdf_dictionary.cpp11
-rw-r--r--core/fpdfapi/fpdf_parser/cpdf_object_unittest.cpp45
3 files changed, 63 insertions, 16 deletions
diff --git a/core/fpdfapi/fpdf_parser/cpdf_array.cpp b/core/fpdfapi/fpdf_parser/cpdf_array.cpp
index 83f99c215b..5e103fa423 100644
--- a/core/fpdfapi/fpdf_parser/cpdf_array.cpp
+++ b/core/fpdfapi/fpdf_parser/cpdf_array.cpp
@@ -6,6 +6,8 @@
#include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
+#include <set>
+
#include "core/fpdfapi/fpdf_parser/include/cpdf_name.h"
#include "core/fpdfapi/fpdf_parser/include/cpdf_number.h"
#include "core/fpdfapi/fpdf_parser/include/cpdf_reference.h"
@@ -51,7 +53,7 @@ CPDF_Object* CPDF_Array::CloneNonCyclic(
pVisited->insert(this);
CPDF_Array* pCopy = new CPDF_Array();
for (size_t i = 0; i < GetCount(); i++) {
- CPDF_Object* value = m_Objects.at(i);
+ CPDF_Object* value = m_Objects[i];
if (!pdfium::ContainsKey(*pVisited, value))
pCopy->m_Objects.push_back(value->CloneNonCyclic(bDirect, pVisited));
}
@@ -83,31 +85,31 @@ CFX_Matrix CPDF_Array::GetMatrix() {
CPDF_Object* CPDF_Array::GetObjectAt(size_t i) const {
if (i >= m_Objects.size())
return nullptr;
- return m_Objects.at(i);
+ return m_Objects[i];
}
CPDF_Object* CPDF_Array::GetDirectObjectAt(size_t i) const {
if (i >= m_Objects.size())
return nullptr;
- return m_Objects.at(i)->GetDirect();
+ return m_Objects[i]->GetDirect();
}
CFX_ByteString CPDF_Array::GetStringAt(size_t i) const {
if (i >= m_Objects.size())
return CFX_ByteString();
- return m_Objects.at(i)->GetString();
+ return m_Objects[i]->GetString();
}
int CPDF_Array::GetIntegerAt(size_t i) const {
if (i >= m_Objects.size())
return 0;
- return m_Objects.at(i)->GetInteger();
+ return m_Objects[i]->GetInteger();
}
FX_FLOAT CPDF_Array::GetNumberAt(size_t i) const {
if (i >= m_Objects.size())
return 0;
- return m_Objects.at(i)->GetNumber();
+ return m_Objects[i]->GetNumber();
}
CPDF_Dictionary* CPDF_Array::GetDictAt(size_t i) const {
@@ -137,7 +139,7 @@ void CPDF_Array::RemoveAt(size_t i, size_t nCount) {
return;
for (size_t j = 0; j < nCount; ++j) {
- if (CPDF_Object* p = m_Objects.at(i + j))
+ if (CPDF_Object* p = m_Objects[i + j])
p->Release();
}
m_Objects.erase(m_Objects.begin() + i, m_Objects.begin() + i + nCount);
@@ -147,10 +149,11 @@ void CPDF_Array::SetAt(size_t i,
CPDF_Object* pObj,
CPDF_IndirectObjectHolder* pObjs) {
ASSERT(IsArray());
- ASSERT(i < m_Objects.size());
- if (i >= m_Objects.size())
+ if (i >= m_Objects.size()) {
+ ASSERT(false);
return;
- if (CPDF_Object* pOld = m_Objects.at(i))
+ }
+ if (CPDF_Object* pOld = m_Objects[i])
pOld->Release();
if (pObj->GetObjNum()) {
ASSERT(pObjs);
diff --git a/core/fpdfapi/fpdf_parser/cpdf_dictionary.cpp b/core/fpdfapi/fpdf_parser/cpdf_dictionary.cpp
index 8fef074d4b..e79bac1839 100644
--- a/core/fpdfapi/fpdf_parser/cpdf_dictionary.cpp
+++ b/core/fpdfapi/fpdf_parser/cpdf_dictionary.cpp
@@ -6,6 +6,9 @@
#include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
+#include <set>
+#include <utility>
+
#include "core/fpdfapi/fpdf_parser/cpdf_boolean.h"
#include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
#include "core/fpdfapi/fpdf_parser/include/cpdf_name.h"
@@ -18,9 +21,13 @@
CPDF_Dictionary::CPDF_Dictionary() {}
CPDF_Dictionary::~CPDF_Dictionary() {
+ // Mark the object as deleted so that it will not be deleted again
+ // in case of cyclic references.
m_ObjNum = kInvalidObjNum;
- for (const auto& it : m_Map)
- it.second->Release();
+ for (const auto& it : m_Map) {
+ if (it.second)
+ it.second->Release();
+ }
}
CPDF_Object::Type CPDF_Dictionary::GetType() const {
diff --git a/core/fpdfapi/fpdf_parser/cpdf_object_unittest.cpp b/core/fpdfapi/fpdf_parser/cpdf_object_unittest.cpp
index 02e50bcfec..ec982ab58a 100644
--- a/core/fpdfapi/fpdf_parser/cpdf_object_unittest.cpp
+++ b/core/fpdfapi/fpdf_parser/cpdf_object_unittest.cpp
@@ -747,6 +747,44 @@ TEST(PDFArrayTest, AddReferenceAndGetObjectAt) {
}
}
+TEST(PDFArrayTest, CloneDirectObject) {
+ CPDF_IndirectObjectHolder objects_holder;
+ ScopedArray array(new CPDF_Array);
+ array->AddReference(&objects_holder, 1234);
+ ASSERT_EQ(1U, array->GetCount());
+ CPDF_Object* obj = array->GetObjectAt(0);
+ ASSERT_TRUE(obj);
+ EXPECT_TRUE(obj->IsReference());
+
+ CPDF_Object* cloned_array_object = array->CloneDirectObject();
+ ASSERT_TRUE(cloned_array_object);
+ ASSERT_TRUE(cloned_array_object->IsArray());
+
+ ScopedArray cloned_array(cloned_array_object->AsArray());
+ ASSERT_EQ(1U, cloned_array->GetCount());
+ CPDF_Object* cloned_obj = cloned_array->GetObjectAt(0);
+ EXPECT_FALSE(cloned_obj);
+}
+
+TEST(PDFDictionaryTest, CloneDirectObject) {
+ CPDF_IndirectObjectHolder objects_holder;
+ ScopedDict dict(new CPDF_Dictionary);
+ dict->SetAtReference("foo", &objects_holder, 1234);
+ ASSERT_EQ(1U, dict->GetCount());
+ CPDF_Object* obj = dict->GetObjectBy("foo");
+ ASSERT_TRUE(obj);
+ EXPECT_TRUE(obj->IsReference());
+
+ CPDF_Object* cloned_dict_object = dict->CloneDirectObject();
+ ASSERT_TRUE(cloned_dict_object);
+ ASSERT_TRUE(cloned_dict_object->IsDictionary());
+
+ ScopedDict cloned_dict(cloned_dict_object->AsDictionary());
+ ASSERT_EQ(1U, cloned_dict->GetCount());
+ CPDF_Object* cloned_obj = cloned_dict->GetObjectBy("foo");
+ EXPECT_FALSE(cloned_obj);
+}
+
TEST(PDFObjectTest, CloneCheckLoop) {
{
// Create an object with a reference loop.
@@ -768,15 +806,14 @@ TEST(PDFObjectTest, CloneCheckLoop) {
EXPECT_EQ(nullptr, cloned_dict->AsDictionary()->GetObjectBy("arr"));
}
{
- std::unique_ptr<CPDF_IndirectObjectHolder> m_ObjHolder(
- new CPDF_IndirectObjectHolder());
+ CPDF_IndirectObjectHolder objects_holder;
// Create an object with a reference loop.
CPDF_Dictionary* dict_obj = new CPDF_Dictionary;
CPDF_Array* arr_obj = new CPDF_Array;
- m_ObjHolder->AddIndirectObject(dict_obj);
+ objects_holder.AddIndirectObject(dict_obj);
EXPECT_EQ(1u, dict_obj->GetObjNum());
dict_obj->SetAt("arr", arr_obj);
- arr_obj->InsertAt(0, dict_obj, m_ObjHolder.get());
+ arr_obj->InsertAt(0, dict_obj, &objects_holder);
CPDF_Object* elem0 = arr_obj->GetObjectAt(0);
ASSERT_TRUE(elem0);
ASSERT_TRUE(elem0->IsReference());
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-25 20:59:50 +0000