text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE122_Heap_Based_Buffer_Overflow__cpp_CWE805_wchar_t_ncpy_61a.cpp
  Label Definition File: CWE122_Heap_Based_Buffer_Overflow__cpp_CWE805.string.label.xml
  Template File: sources-sink-61a.tmpl.cpp
  */
  /*
   * @description
   * CWE: 122 Heap Based Buffer Overflow
   * BadSource:  Allocate using new[] and set data pointer to a small buffer
   * GoodSource: Allocate using new[] and set data pointer to a large buffer
   * Sinks: ncpy
   *    BadSink : Copy string to data using wcsncpy
   * Flow Variant: 61 Data flow: data returned from one function to another in different source files
   *
   * */
  
  #include "std_testcase.h"
  
  #include <wchar.h>
  
  namespace CWE122_Heap_Based_Buffer_Overflow__cpp_CWE805_wchar_t_ncpy_61
  {
  
  #ifndef OMITBAD
  
  /* bad function declaration */
  wchar_t * badSource(wchar_t * data);
  
  void bad()
  {
      wchar_t * data;
      data = NULL;
      data = badSource(data);
      {
          wchar_t source[100];
          wmemset(source, L'C', 100-1); /* fill with L'C's */
          source[100-1] = L'\0'; /* null terminate */
          /* POTENTIAL FLAW: Possible buffer overflow if source is larger than data */
          wcsncpy(data, source, 100-1);
          data[100-1] = L'\0'; /* Ensure the destination buffer is null terminated */
          printWLine(data);
          delete [] data;
      }
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodG2B uses the GoodSource with the BadSink */
  wchar_t * goodG2BSource(wchar_t * data);
  
  static void goodG2B()
  {
      wchar_t * data;
      data = NULL;
      data = goodG2BSource(data);
      {
          wchar_t source[100];
          wmemset(source, L'C', 100-1); /* fill with L'C's */
          source[100-1] = L'\0'; /* null terminate */
          /* POTENTIAL FLAW: Possible buffer overflow if source is larger than data */
          wcsncpy(data, source, 100-1);
          data[100-1] = L'\0'; /* Ensure the destination buffer is null terminated */
          printWLine(data);
          delete [] data;
      }
  }
  
  void good()
  {
      goodG2B();
  }
  
  #endif /* OMITGOOD */
  
  } /* close namespace */
  
  /* Below is the main(). It is only used when building this testcase on
     its own for testing or for building a binary to use in testing binary
     analysis tools. It is not used when compiling all the testcases as one
     application, which is how source code analysis tools are tested. */
  
  #ifdef INCLUDEMAIN
  
  using namespace CWE122_Heap_Based_Buffer_Overflow__cpp_CWE805_wchar_t_ncpy_61; /* so that we can use good and bad easily */
  
  int main(int argc, char * argv[])
  {
      /* seed randomness */
      srand( (unsigned)time(NULL) );
  #ifndef OMITGOOD
      printLine("Calling good()...");
      good();
      printLine("Finished good()");
  #endif /* OMITGOOD */
  #ifndef OMITBAD
      printLine("Calling bad()...");
      bad();
      printLine("Finished bad()");
  #endif /* OMITBAD */
      return 0;
  }
  
  #endif
  