text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE78_OS_Command_Injection__wchar_t_environment_w32_spawnv_18.c
  Label Definition File: CWE78_OS_Command_Injection.strings.label.xml
  Template File: sources-sink-18.tmpl.c
  */
  /*
   * @description
   * CWE: 78 OS Command Injection
   * BadSource: environment Read input from an environment variable
   * GoodSource: Fixed string
   * Sink: w32_spawnv
   *    BadSink : execute command with wspawnv
   * Flow Variant: 18 Control flow: goto statements
   *
   * */
  
  #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>
  
  #ifndef OMITBAD
  
  void CWE78_OS_Command_Injection__wchar_t_environment_w32_spawnv_18_bad()
  {
      wchar_t * data;
      wchar_t dataBuffer[100] = COMMAND_ARG2;
      data = dataBuffer;
      goto source;
  source:
      {
          /* 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);
          }
      }
      {
          wchar_t *args[] = {COMMAND_INT_PATH, COMMAND_ARG1, COMMAND_ARG3, NULL};
          /* wspawnv - specify the path where the command is located */
          /* POTENTIAL FLAW: Execute command without validating input possibly leading to command injection */
          _wspawnv(_P_WAIT, COMMAND_INT_PATH, args);
      }
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodG2B() - use goodsource and badsink by reversing the blocks on the goto statement */
  static void goodG2B()
  {
      wchar_t * data;
      wchar_t dataBuffer[100] = COMMAND_ARG2;
      data = dataBuffer;
      goto source;
  source:
      /* FIX: Append a fixed string to data (not user / external input) */
      wcscat(data, L"*.*");
      {
          wchar_t *args[] = {COMMAND_INT_PATH, COMMAND_ARG1, COMMAND_ARG3, NULL};
          /* wspawnv - specify the path where the command is located */
          /* POTENTIAL FLAW: Execute command without validating input possibly leading to command injection */
          _wspawnv(_P_WAIT, COMMAND_INT_PATH, args);
      }
  }
  
  void CWE78_OS_Command_Injection__wchar_t_environment_w32_spawnv_18_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_spawnv_18_good();
      printLine("Finished good()");
  #endif /* OMITGOOD */
  #ifndef OMITBAD
      printLine("Calling bad()...");
      CWE78_OS_Command_Injection__wchar_t_environment_w32_spawnv_18_bad();
      printLine("Finished bad()");
  #endif /* OMITBAD */
      return 0;
  }
  
  #endif
  