text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE127_Buffer_Underread__malloc_char_memcpy_05.c
  Label Definition File: CWE127_Buffer_Underread__malloc.label.xml
  Template File: sources-sink-05.tmpl.c
  */
  /*
   * @description
   * CWE: 127 Buffer Under-read
   * BadSource:  Set data pointer to before the allocated memory buffer
   * GoodSource: Set data pointer to the allocated memory buffer
   * Sink: memcpy
   *    BadSink : Copy data to string using memcpy
   * Flow Variant: 05 Control flow: if(staticTrue) and if(staticFalse)
   *
   * */
  
  #include "std_testcase.h"
  
  #include <wchar.h>
  
  /* 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 CWE127_Buffer_Underread__malloc_char_memcpy_05_bad()
  {
      char * data;
      data = NULL;
      if(staticTrue)
      {
          {
              char * dataBuffer = (char *)malloc(100*sizeof(char));
              if (dataBuffer == NULL) {exit(-1);}
              memset(dataBuffer, 'A', 100-1);
              dataBuffer[100-1] = '\0';
              /* FLAW: Set data pointer to before the allocated memory buffer */
              data = dataBuffer - 8;
          }
      }
      {
          char dest[100];
          memset(dest, 'C', 100-1); /* fill with 'C's */
          dest[100-1] = '\0'; /* null terminate */
          /* POTENTIAL FLAW: Possibly copy from a memory location located before the source buffer */
          memcpy(dest, data, 100*sizeof(char));
          /* Ensure null termination */
          dest[100-1] = '\0';
          printLine(dest);
          /* INCIDENTAL CWE-401: Memory Leak - data may not point to location
           * returned by malloc() so can't safely call free() on it */
      }
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodG2B1() - use goodsource and badsink by changing the staticTrue to staticFalse */
  static void goodG2B1()
  {
      char * data;
      data = NULL;
      if(staticFalse)
      {
          /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
          printLine("Benign, fixed string");
      }
      else
      {
          {
              char * dataBuffer = (char *)malloc(100*sizeof(char));
              if (dataBuffer == NULL) {exit(-1);}
              memset(dataBuffer, 'A', 100-1);
              dataBuffer[100-1] = '\0';
              /* FIX: Set data pointer to the allocated memory buffer */
              data = dataBuffer;
          }
      }
      {
          char dest[100];
          memset(dest, 'C', 100-1); /* fill with 'C's */
          dest[100-1] = '\0'; /* null terminate */
          /* POTENTIAL FLAW: Possibly copy from a memory location located before the source buffer */
          memcpy(dest, data, 100*sizeof(char));
          /* Ensure null termination */
          dest[100-1] = '\0';
          printLine(dest);
          /* INCIDENTAL CWE-401: Memory Leak - data may not point to location
           * returned by malloc() so can't safely call free() on it */
      }
  }
  
  /* goodG2B2() - use goodsource and badsink by reversing the blocks in the if statement */
  static void goodG2B2()
  {
      char * data;
      data = NULL;
      if(staticTrue)
      {
          {
              char * dataBuffer = (char *)malloc(100*sizeof(char));
              if (dataBuffer == NULL) {exit(-1);}
              memset(dataBuffer, 'A', 100-1);
              dataBuffer[100-1] = '\0';
              /* FIX: Set data pointer to the allocated memory buffer */
              data = dataBuffer;
          }
      }
      {
          char dest[100];
          memset(dest, 'C', 100-1); /* fill with 'C's */
          dest[100-1] = '\0'; /* null terminate */
          /* POTENTIAL FLAW: Possibly copy from a memory location located before the source buffer */
          memcpy(dest, data, 100*sizeof(char));
          /* Ensure null termination */
          dest[100-1] = '\0';
          printLine(dest);
          /* INCIDENTAL CWE-401: Memory Leak - data may not point to location
           * returned by malloc() so can't safely call free() on it */
      }
  }
  
  void CWE127_Buffer_Underread__malloc_char_memcpy_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()...");
      CWE127_Buffer_Underread__malloc_char_memcpy_05_good();
      printLine("Finished good()");
  #endif /* OMITGOOD */
  #ifndef OMITBAD
      printLine("Calling bad()...");
      CWE127_Buffer_Underread__malloc_char_memcpy_05_bad();
      printLine("Finished bad()");
  #endif /* OMITBAD */
      return 0;
  }
  
  #endif
  