Merge to M45: Fix heap use after free in CPDFSDK_Annot::GetPDFAnnot.

testing/embedder_test.h

 // Copyright (c) 2015 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef TESTING_EMBEDDER_TEST_H_
 #define TESTING_EMBEDDER_TEST_H_
 
+#include <map>
 #include <string>
 
 #include "../public/fpdf_dataavail.h"
 #include "../public/fpdf_ext.h"
 #include "../public/fpdf_formfill.h"
 #include "../public/fpdfview.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "v8/include/v8.h"
 
 class TestLoader;
@@ skipping 16 matching lines @@
     virtual int Alert(FPDF_WIDESTRING message, FPDF_WIDESTRING title,
                       int type, int icon) {
       return 0;
     }
 
     // Equivalent to FPDF_FORMFILLINFO::FFI_SetTimer().
     virtual int SetTimer(int msecs, TimerCallback fn) { return 0; }
 
     // Equivalent to FPDF_FORMFILLINFO::FFI_KillTimer().
     virtual void KillTimer(int id) { }
+
+    // Equivalent to FPDF_FORMFILLINFO::FFI_GetPage().
+    virtual FPDF_PAGE GetPage(FPDF_FORMHANDLE form_handle,
+                              FPDF_DOCUMENT document,
+                              int page_index);
+
+   private:
+    std::map<int, FPDF_PAGE> m_pageMap;
   };
 
   EmbedderTest();
   virtual ~EmbedderTest();
 
   void SetUp() override;
   void TearDown() override;
 
   void SetDelegate(Delegate* delegate) {
     delegate_ = delegate ? delegate : default_delegate_;
   }
 
   FPDF_DOCUMENT document() { return document_; }
   FPDF_FORMHANDLE form_handle() { return form_handle_; }
 
   // Open the document specified by |filename|, and create its form fill
   // environment, or return false on failure.
   virtual bool OpenDocument(const std::string& filename);
 
   // Perform JavaScript actions that are to run at document open time.
   virtual void DoOpenActions();
 
   // Determine the page numbers present in the document.
   virtual int GetFirstPageNum();
   virtual int GetPageCount();
 
   // Load a specific page of the open document.
   virtual FPDF_PAGE LoadPage(int page_number);
 
+  // Load a specific page of the open document using delegate_->GetPage.
+  // delegate_->GetPage also caches loaded page.
+  virtual FPDF_PAGE LoadAndCachePage(int page_number);
+
   // Convert a loaded page into a bitmap.
   virtual FPDF_BITMAP RenderPage(FPDF_PAGE page);
 
   // Relese the resources obtained from LoadPage(). Further use of |page|
   // is prohibited after this call is made.
   virtual void UnloadPage(FPDF_PAGE page);
 
  protected:
   Delegate* delegate_;
   Delegate* default_delegate_;
@@ skipping 10 matching lines @@
   size_t file_length_;
   char* file_contents_;
 
  private:
   static void UnsupportedHandlerTrampoline(UNSUPPORT_INFO*, int type);
   static int AlertTrampoline(IPDF_JSPLATFORM* plaform, FPDF_WIDESTRING message,
                              FPDF_WIDESTRING title, int type, int icon);
   static int SetTimerTrampoline(FPDF_FORMFILLINFO* info, int msecs,
                                 TimerCallback fn);
   static void KillTimerTrampoline(FPDF_FORMFILLINFO* info, int id);
+  static FPDF_PAGE GetPageTrampoline(FPDF_FORMFILLINFO* info,
+                                     FPDF_DOCUMENT document,
+                                     int page_index);
 };
 
 #endif  // TESTING_EMBEDDER_TEST_H_