text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE121_Stack_Based_Buffer_Overflow__CWE805_struct_declare_memcpy_17.c
  Label Definition File: CWE121_Stack_Based_Buffer_Overflow__CWE805.label.xml
  Template File: sources-sink-17.tmpl.c
  */
  /*
   * @description
   * CWE: 121 Stack Based Buffer Overflow
   * BadSource:  Set data pointer to the bad buffer
   * GoodSource: Set data pointer to the good buffer
   * Sink: memcpy
   *    BadSink : Copy twoIntsStruct array to data using memcpy
   * Flow Variant: 17 Control flow: for loops
   *
   * */
  
  #include "std_testcase.h"
  
  #ifndef OMITBAD
  
  void CWE121_Stack_Based_Buffer_Overflow__CWE805_struct_declare_memcpy_17_bad()
  {
      int i;
      twoIntsStruct * data;
      twoIntsStruct dataBadBuffer[50];
      twoIntsStruct dataGoodBuffer[100];
      for(i = 0; i < 1; i++)
      {
          /* FLAW: Set a pointer to a "small" buffer. This buffer will be used in the sinks as a destination
           * buffer in various memory copying functions using a "large" source buffer. */
          data = dataBadBuffer;
      }
      {
          twoIntsStruct source[100];
          {
              size_t i;
              /* Initialize array */
              for (i = 0; i < 100; i++)
              {
                  source[i].intOne = 0;
                  source[i].intTwo = 0;
              }
          }
          /* POTENTIAL FLAW: Possible buffer overflow if data < 100 */
          memcpy(data, source, 100*sizeof(twoIntsStruct));
          printStructLine(&data[0]);
      }
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodG2B() - use goodsource and badsink by changing the conditions on the for statements */
  static void goodG2B()
  {
      int h;
      twoIntsStruct * data;
      twoIntsStruct dataBadBuffer[50];
      twoIntsStruct dataGoodBuffer[100];
      for(h = 0; h < 1; h++)
      {
          /* FIX: Set a pointer to a "large" buffer, thus avoiding buffer overflows in the sinks. */
          data = dataGoodBuffer;
      }
      {
          twoIntsStruct source[100];
          {
              size_t i;
              /* Initialize array */
              for (i = 0; i < 100; i++)
              {
                  source[i].intOne = 0;
                  source[i].intTwo = 0;
              }
          }
          /* POTENTIAL FLAW: Possible buffer overflow if data < 100 */
          memcpy(data, source, 100*sizeof(twoIntsStruct));
          printStructLine(&data[0]);
      }
  }
  
  void CWE121_Stack_Based_Buffer_Overflow__CWE805_struct_declare_memcpy_17_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__CWE805_struct_declare_memcpy_17_good();
      printLine("Finished good()");
  #endif /* OMITGOOD */
  #ifndef OMITBAD
      printLine("Calling bad()...");
      CWE121_Stack_Based_Buffer_Overflow__CWE805_struct_declare_memcpy_17_bad();
      printLine("Finished bad()");
  #endif /* OMITBAD */
      return 0;
  }
  
  #endif
  