text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE78_OS_Command_Injection__wchar_t_environment_w32_spawnlp_34.c
  Label Definition File: CWE78_OS_Command_Injection.strings.label.xml
  Template File: sources-sink-34.tmpl.c
  */
  /*
   * @description
   * CWE: 78 OS Command Injection
   * BadSource: environment Read input from an environment variable
   * GoodSource: Fixed string
   * Sinks: w32_spawnlp
   *    BadSink : execute command with wspawnlp
   * Flow Variant: 34 Data flow: use of a union containing two methods of accessing the same data (within the same function)
   *
   * */
  
  #include "std_testcase.h"
  
  #include <wchar.h>
  
  #ifdef _WIN32
  #define COMMAND_INT_PATH L"%WINDIR%\\system32\\cmd.exe"
  #define COMMAND_INT L"cmd.exe"
  #define COMMAND_ARG1 L"/c"
  #define COMMAND_ARG2 L"dir "
  #define COMMAND_ARG3 data
  #else /* NOT _WIN32 */
  #include <unistd.h>
  #define COMMAND_INT_PATH L"/bin/sh"
  #define COMMAND_INT L"sh"
  #define COMMAND_ARG1 L"-c"
  #define COMMAND_ARG2 L"ls "
  #define COMMAND_ARG3 data
  #endif
  
  #define ENV_VARIABLE L"ADD"
  
  #ifdef _WIN32
  #define GETENV _wgetenv
  #else
  #define GETENV getenv
  #endif
  
  #include <process.h>
  
  typedef union
  {
      wchar_t * unionFirst;
      wchar_t * unionSecond;
  } CWE78_OS_Command_Injection__wchar_t_environment_w32_spawnlp_34_unionType;
  
  #ifndef OMITBAD
  
  void CWE78_OS_Command_Injection__wchar_t_environment_w32_spawnlp_34_bad()
  {
      wchar_t * data;
      CWE78_OS_Command_Injection__wchar_t_environment_w32_spawnlp_34_unionType myUnion;
      wchar_t dataBuffer[100] = COMMAND_ARG2;
      data = dataBuffer;
      {
          /* Append input from an environment variable to data */
          size_t dataLen = wcslen(data);
          wchar_t * environment = GETENV(ENV_VARIABLE);
          /* If there is data in the environment variable */
          if (environment != NULL)
          {
              /* POTENTIAL FLAW: Read data from an environment variable */
              wcsncat(data+dataLen, environment, 100-dataLen-1);
          }
      }
      myUnion.unionFirst = data;
      {
          wchar_t * data = myUnion.unionSecond;
          /* wspawnlp - searches for the location of the command among
           * the directories specified by the PATH environment variable */
          /* POTENTIAL FLAW: Execute command without validating input possibly leading to command injection */
          _wspawnlp(_P_WAIT, COMMAND_INT, COMMAND_INT, COMMAND_ARG1, COMMAND_ARG3, NULL);
      }
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodG2B() uses the GoodSource with the BadSink */
  static void goodG2B()
  {
      wchar_t * data;
      CWE78_OS_Command_Injection__wchar_t_environment_w32_spawnlp_34_unionType myUnion;
      wchar_t dataBuffer[100] = COMMAND_ARG2;
      data = dataBuffer;
      /* FIX: Append a fixed string to data (not user / external input) */
      wcscat(data, L"*.*");
      myUnion.unionFirst = data;
      {
          wchar_t * data = myUnion.unionSecond;
          /* wspawnlp - searches for the location of the command among
           * the directories specified by the PATH environment variable */
          /* POTENTIAL FLAW: Execute command without validating input possibly leading to command injection */
          _wspawnlp(_P_WAIT, COMMAND_INT, COMMAND_INT, COMMAND_ARG1, COMMAND_ARG3, NULL);
      }
  }
  
  void CWE78_OS_Command_Injection__wchar_t_environment_w32_spawnlp_34_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()...");
      CWE78_OS_Command_Injection__wchar_t_environment_w32_spawnlp_34_good();
      printLine("Finished good()");
  #endif /* OMITGOOD */
  #ifndef OMITBAD
      printLine("Calling bad()...");
      CWE78_OS_Command_Injection__wchar_t_environment_w32_spawnlp_34_bad();
      printLine("Finished bad()");
  #endif /* OMITBAD */
      return 0;
  }
  
  #endif
  