text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE195_Signed_to_Unsigned_Conversion_Error__fgets_memmove_05.c
  Label Definition File: CWE195_Signed_to_Unsigned_Conversion_Error.label.xml
  Template File: sources-sink-05.tmpl.c
  */
  /*
   * @description
   * CWE: 195 Signed to Unsigned Conversion Error
   * BadSource: fgets Read data from the console using fgets()
   * GoodSource: Positive integer
   * Sink: memmove
   *    BadSink : Copy strings using memmove() with the length of data
   * Flow Variant: 05 Control flow: if(staticTrue) and if(staticFalse)
   *
   * */
  
  #include "std_testcase.h"
  
  #define CHAR_ARRAY_SIZE (3 * sizeof(data) + 2)
  
  /* The two variables below are not defined as "const", but are never
   * assigned any other value, so a tool should be able to identify that
   * reads of these will always return their initialized values.
   */
  static int staticTrue = 1; /* true */
  static int staticFalse = 0; /* false */
  
  #ifndef OMITBAD
  
  void CWE195_Signed_to_Unsigned_Conversion_Error__fgets_memmove_05_bad()
  {
      int data;
      /* Initialize data */
      data = -1;
      if(staticTrue)
      {
          {
              char inputBuffer[CHAR_ARRAY_SIZE] = "";
              /* POTENTIAL FLAW: Read data from the console using fgets() */
              if (fgets(inputBuffer, CHAR_ARRAY_SIZE, stdin) != NULL)
              {
                  /* Convert to int */
                  data = atoi(inputBuffer);
              }
              else
              {
                  printLine("fgets() failed.");
              }
          }
      }
      {
          char source[100];
          char dest[100] = "";
          memset(source, 'A', 100-1);
          source[100-1] = '\0';
          if (data < 100)
          {
              /* POTENTIAL FLAW: data is interpreted as an unsigned int - if its value is negative,
               * the sign conversion could result in a very large number */
              memmove(dest, source, data);
              dest[data] = '\0'; /* NULL terminate */
          }
          printLine(dest);
      }
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodG2B1() - use goodsource and badsink by changing the staticTrue to staticFalse */
  static void goodG2B1()
  {
      int data;
      /* Initialize data */
      data = -1;
      if(staticFalse)
      {
          /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
          printLine("Benign, fixed string");
      }
      else
      {
          /* FIX: Use a positive integer less than &InitialDataSize&*/
          data = 100-1;
      }
      {
          char source[100];
          char dest[100] = "";
          memset(source, 'A', 100-1);
          source[100-1] = '\0';
          if (data < 100)
          {
              /* POTENTIAL FLAW: data is interpreted as an unsigned int - if its value is negative,
               * the sign conversion could result in a very large number */
              memmove(dest, source, data);
              dest[data] = '\0'; /* NULL terminate */
          }
          printLine(dest);
      }
  }
  
  /* goodG2B2() - use goodsource and badsink by reversing the blocks in the if statement */
  static void goodG2B2()
  {
      int data;
      /* Initialize data */
      data = -1;
      if(staticTrue)
      {
          /* FIX: Use a positive integer less than &InitialDataSize&*/
          data = 100-1;
      }
      {
          char source[100];
          char dest[100] = "";
          memset(source, 'A', 100-1);
          source[100-1] = '\0';
          if (data < 100)
          {
              /* POTENTIAL FLAW: data is interpreted as an unsigned int - if its value is negative,
               * the sign conversion could result in a very large number */
              memmove(dest, source, data);
              dest[data] = '\0'; /* NULL terminate */
          }
          printLine(dest);
      }
  }
  
  void CWE195_Signed_to_Unsigned_Conversion_Error__fgets_memmove_05_good()
  {
      goodG2B1();
      goodG2B2();
  }
  
  #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()...");
      CWE195_Signed_to_Unsigned_Conversion_Error__fgets_memmove_05_good();
      printLine("Finished good()");
  #endif /* OMITGOOD */
  #ifndef OMITBAD
      printLine("Calling bad()...");
      CWE195_Signed_to_Unsigned_Conversion_Error__fgets_memmove_05_bad();
      printLine("Finished bad()");
  #endif /* OMITBAD */
      return 0;
  }
  
  #endif
  