text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE126_Buffer_Overread__new_char_memmove_16.cpp
  Label Definition File: CWE126_Buffer_Overread__new.label.xml
  Template File: sources-sink-16.tmpl.cpp
  */
  /*
   * @description
   * CWE: 126 Buffer Over-read
   * BadSource:  Use a small buffer
   * GoodSource: Use a large buffer
   * Sink: memmove
   *    BadSink : Copy data to string using memmove
   * Flow Variant: 16 Control flow: while(1) and while(0)
   *
   * */
  
  #include "std_testcase.h"
  
  #include <wchar.h>
  
  namespace CWE126_Buffer_Overread__new_char_memmove_16
  {
  
  #ifndef OMITBAD
  
  void bad()
  {
      char * data;
      data = NULL;
      while(0)
      {
          /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
          /* FIX: Use a large buffer */
          data = new char[100];
          memset(data, 'A', 100-1); /* fill with 'A's */
          data[100-1] = '\0'; /* null terminate */
          break;
      }
      while(1)
      {
          /* FLAW: Use a small buffer */
          data = new char[50];
          memset(data, 'A', 50-1); /* fill with 'A's */
          data[50-1] = '\0'; /* null terminate */
          break;
      }
      {
          char dest[100];
          memset(dest, 'C', 100-1);
          dest[100-1] = '\0'; /* null terminate */
          /* POTENTIAL FLAW: using memmove with the length of the dest where data
           * could be smaller than dest causing buffer overread */
          memmove(dest, data, strlen(dest)*sizeof(char));
          dest[100-1] = '\0';
          printLine(dest);
          delete [] data;
      }
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodG2B() - use goodsource and badsink by changing the conditions on the while statements */
  static void goodG2B()
  {
      char * data;
      data = NULL;
      while(1)
      {
          /* FIX: Use a large buffer */
          data = new char[100];
          memset(data, 'A', 100-1); /* fill with 'A's */
          data[100-1] = '\0'; /* null terminate */
          break;
      }
      while(0)
      {
          /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
          /* FLAW: Use a small buffer */
          data = new char[50];
          memset(data, 'A', 50-1); /* fill with 'A's */
          data[50-1] = '\0'; /* null terminate */
          break;
      }
      {
          char dest[100];
          memset(dest, 'C', 100-1);
          dest[100-1] = '\0'; /* null terminate */
          /* POTENTIAL FLAW: using memmove with the length of the dest where data
           * could be smaller than dest causing buffer overread */
          memmove(dest, data, strlen(dest)*sizeof(char));
          dest[100-1] = '\0';
          printLine(dest);
          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 CWE126_Buffer_Overread__new_char_memmove_16; // 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
  