text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE122_Heap_Based_Buffer_Overflow__c_CWE805_wchar_t_snprintf_68a.c
  Label Definition File: CWE122_Heap_Based_Buffer_Overflow__c_CWE805.string.label.xml
  Template File: sources-sink-68a.tmpl.c
  */
  /*
   * @description
   * CWE: 122 Heap Based Buffer Overflow
   * BadSource:  Allocate using malloc() and set data pointer to a small buffer
   * GoodSource: Allocate using malloc() and set data pointer to a large buffer
   * Sink: snprintf
   *    BadSink : Copy string to data using snprintf
   * Flow Variant: 68 Data flow: data passed as a global variable from one function to another in different source files
   *
   * */
  
  #include "std_testcase.h"
  
  #include <wchar.h>
  
  #ifdef _WIN32
  #define SNPRINTF _snwprintf
  #else
  #define SNPRINTF snprintf
  #endif
  
  wchar_t * CWE122_Heap_Based_Buffer_Overflow__c_CWE805_wchar_t_snprintf_68_badData;
  wchar_t * CWE122_Heap_Based_Buffer_Overflow__c_CWE805_wchar_t_snprintf_68_goodG2BData;
  
  #ifndef OMITBAD
  
  /* bad function declaration */
  void CWE122_Heap_Based_Buffer_Overflow__c_CWE805_wchar_t_snprintf_68b_badSink();
  
  void CWE122_Heap_Based_Buffer_Overflow__c_CWE805_wchar_t_snprintf_68_bad()
  {
      wchar_t * data;
      data = NULL;
      /* FLAW: Allocate and point data to a small buffer that is smaller than the large buffer used in the sinks */
      data = (wchar_t *)malloc(50*sizeof(wchar_t));
      if (data == NULL) {exit(-1);}
      data[0] = L'\0'; /* null terminate */
      CWE122_Heap_Based_Buffer_Overflow__c_CWE805_wchar_t_snprintf_68_badData = data;
      CWE122_Heap_Based_Buffer_Overflow__c_CWE805_wchar_t_snprintf_68b_badSink();
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* good function declarations */
  void CWE122_Heap_Based_Buffer_Overflow__c_CWE805_wchar_t_snprintf_68b_goodG2BSink();
  
  /* goodG2B uses the GoodSource with the BadSink */
  static void goodG2B()
  {
      wchar_t * data;
      data = NULL;
      /* FIX: Allocate and point data to a large buffer that is at least as large as the large buffer used in the sink */
      data = (wchar_t *)malloc(100*sizeof(wchar_t));
      if (data == NULL) {exit(-1);}
      data[0] = L'\0'; /* null terminate */
      CWE122_Heap_Based_Buffer_Overflow__c_CWE805_wchar_t_snprintf_68_goodG2BData = data;
      CWE122_Heap_Based_Buffer_Overflow__c_CWE805_wchar_t_snprintf_68b_goodG2BSink();
  }
  
  void CWE122_Heap_Based_Buffer_Overflow__c_CWE805_wchar_t_snprintf_68_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()...");
      CWE122_Heap_Based_Buffer_Overflow__c_CWE805_wchar_t_snprintf_68_good();
      printLine("Finished good()");
  #endif /* OMITGOOD */
  #ifndef OMITBAD
      printLine("Calling bad()...");
      CWE122_Heap_Based_Buffer_Overflow__c_CWE805_wchar_t_snprintf_68_bad();
      printLine("Finished bad()");
  #endif /* OMITBAD */
      return 0;
  }
  
  #endif
  