text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE121_Stack_Based_Buffer_Overflow__CWE193_wchar_t_declare_cpy_34.c
  Label Definition File: CWE121_Stack_Based_Buffer_Overflow__CWE193.label.xml
  Template File: sources-sink-34.tmpl.c
  */
  /*
   * @description
   * CWE: 121 Stack Based Buffer Overflow
   * BadSource:  Point data to a buffer that does not have space for a NULL terminator
   * GoodSource: Point data to a buffer that includes space for a NULL terminator
   * Sinks: cpy
   *    BadSink : Copy string to data using wcscpy()
   * Flow Variant: 34 Data flow: use of a union containing two methods of accessing the same data (within the same function)
   *
   * */
  
  #include "std_testcase.h"
  
  #ifndef _WIN32
  #include <wchar.h>
  #endif
  
  /* MAINTENANCE NOTE: The length of this string should equal the 10 */
  #define SRC_STRING L"AAAAAAAAAA"
  
  typedef union
  {
      wchar_t * unionFirst;
      wchar_t * unionSecond;
  } CWE121_Stack_Based_Buffer_Overflow__CWE193_wchar_t_declare_cpy_34_unionType;
  
  #ifndef OMITBAD
  
  void CWE121_Stack_Based_Buffer_Overflow__CWE193_wchar_t_declare_cpy_34_bad()
  {
      wchar_t * data;
      CWE121_Stack_Based_Buffer_Overflow__CWE193_wchar_t_declare_cpy_34_unionType myUnion;
      wchar_t dataBadBuffer[10];
      wchar_t dataGoodBuffer[10+1];
      /* FLAW: Set a pointer to a buffer that does not leave room for a NULL terminator when performing
       * string copies in the sinks  */
      data = dataBadBuffer;
      data[0] = L'\0'; /* null terminate */
      myUnion.unionFirst = data;
      {
          wchar_t * data = myUnion.unionSecond;
          {
              wchar_t source[10+1] = SRC_STRING;
              /* POTENTIAL FLAW: data may not have enough space to hold source */
              wcscpy(data, source);
              printWLine(data);
          }
      }
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodG2B() uses the GoodSource with the BadSink */
  static void goodG2B()
  {
      wchar_t * data;
      CWE121_Stack_Based_Buffer_Overflow__CWE193_wchar_t_declare_cpy_34_unionType myUnion;
      wchar_t dataBadBuffer[10];
      wchar_t dataGoodBuffer[10+1];
      /* FIX: Set a pointer to a buffer that leaves room for a NULL terminator when performing
       * string copies in the sinks  */
      data = dataGoodBuffer;
      data[0] = L'\0'; /* null terminate */
      myUnion.unionFirst = data;
      {
          wchar_t * data = myUnion.unionSecond;
          {
              wchar_t source[10+1] = SRC_STRING;
              /* POTENTIAL FLAW: data may not have enough space to hold source */
              wcscpy(data, source);
              printWLine(data);
          }
      }
  }
  
  void CWE121_Stack_Based_Buffer_Overflow__CWE193_wchar_t_declare_cpy_34_good()
  {
      goodG2B();
  }
  
  #endif /* OMITGOOD */
  
  /* 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
  
  int main(int argc, char * argv[])
  {
      /* seed randomness */
      srand( (unsigned)time(NULL) );
  #ifndef OMITGOOD
      printLine("Calling good()...");
      CWE121_Stack_Based_Buffer_Overflow__CWE193_wchar_t_declare_cpy_34_good();
      printLine("Finished good()");
  #endif /* OMITGOOD */
  #ifndef OMITBAD
      printLine("Calling bad()...");
      CWE121_Stack_Based_Buffer_Overflow__CWE193_wchar_t_declare_cpy_34_bad();
      printLine("Finished bad()");
  #endif /* OMITBAD */
      return 0;
  }
  
  #endif
  