text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE78_OS_Command_Injection__wchar_t_Environment_popen_09.c
  Label Definition File: CWE78_OS_Command_Injection.fullpath.label.xml
  Template File: sources-sink-09.tmpl.c
  */
  /*
   * @description
   * CWE: 78 OS Command Injection
   * BadSource: Environment Read input from an environment variable
   * GoodSource: Benign input
   * Sink: popen
   *    BadSink : Execute command using popen()
   * Flow Variant: 09 Control flow: if(global_const_t) and if(global_const_f)
   *
   * */
  
  #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 FULL_COMMAND COMMAND_INT_PATH L" " COMMAND_ARG1 L" "COMMAND_ARG2 L" "
  #else /* NOT _WIN32 */
  # define COMMAND_INT_PATH L"/bin/sh"
  # define COMMAND_INT L"sh"
  # define COMMAND_ARG1 L"ls"
  # define FULL_COMMAND COMMAND_INT_PATH L" " COMMAND_ARG1 L" "
  #endif
  
  #define ENV_VARIABLE L"ADD"
  
  #ifdef _WIN32
  # define GETENV _wgetenv
  #else
  # define GETENV wgetenv
  #endif
  
  /* define POPEN as _popen on Windows and popen otherwise */
  #ifdef _WIN32
  # define POPEN _wpopen
  # define PCLOSE _pclose
  #else /* NOT _WIN32 */
  # define POPEN wpopen
  # define PCLOSE pclose
  #endif
  
  #ifndef OMITBAD
  
  void CWE78_OS_Command_Injection__wchar_t_Environment_popen_09_bad()
  {
      wchar_t * data;
      wchar_t data_buf[100] = FULL_COMMAND;
      data = data_buf;
      if(global_const_t)
      {
          {
              /* Read input from an environment variable */
              size_t data_len = wcslen(data);
              wchar_t * environment = GETENV(ENV_VARIABLE);
              /* If there is data in the environment variable */
              if (environment != NULL)
              {
                  wcsncat(data+data_len, environment, 100-data_len-1);
              }
          }
      }
      else
      {
          /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
          /* FIX: Benign input preventing command injection */
          wcscat(data, L"*.*");
      }
      {
          FILE *pipe;
          /* POSSIBLE FLAW: Execute command without validating input possibly leading to command injection */
          pipe = POPEN(data, L"wb");
          if (pipe != NULL) PCLOSE(pipe);
      }
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodG2B1() - use goodsource and badsink by changing the global_const_t to global_const_f */
  static void goodG2B1()
  {
      wchar_t * data;
      wchar_t data_buf[100] = FULL_COMMAND;
      data = data_buf;
      if(global_const_f)
      {
          /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
          {
              /* Read input from an environment variable */
              size_t data_len = wcslen(data);
              wchar_t * environment = GETENV(ENV_VARIABLE);
              /* If there is data in the environment variable */
              if (environment != NULL)
              {
                  wcsncat(data+data_len, environment, 100-data_len-1);
              }
          }
      }
      else
      {
          /* FIX: Benign input preventing command injection */
          wcscat(data, L"*.*");
      }
      {
          FILE *pipe;
          /* POSSIBLE FLAW: Execute command without validating input possibly leading to command injection */
          pipe = POPEN(data, L"wb");
          if (pipe != NULL) PCLOSE(pipe);
      }
  }
  
  /* goodG2B2() - use goodsource and badsink by reversing the blocks in the if statement */
  static void goodG2B2()
  {
      wchar_t * data;
      wchar_t data_buf[100] = FULL_COMMAND;
      data = data_buf;
      if(global_const_t)
      {
          /* FIX: Benign input preventing command injection */
          wcscat(data, L"*.*");
      }
      else
      {
          /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
          {
              /* Read input from an environment variable */
              size_t data_len = wcslen(data);
              wchar_t * environment = GETENV(ENV_VARIABLE);
              /* If there is data in the environment variable */
              if (environment != NULL)
              {
                  wcsncat(data+data_len, environment, 100-data_len-1);
              }
          }
      }
      {
          FILE *pipe;
          /* POSSIBLE FLAW: Execute command without validating input possibly leading to command injection */
          pipe = POPEN(data, L"wb");
          if (pipe != NULL) PCLOSE(pipe);
      }
  }
  
  void CWE78_OS_Command_Injection__wchar_t_Environment_popen_09_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()...");
      CWE78_OS_Command_Injection__wchar_t_Environment_popen_09_good();
      printLine("Finished good()");
  #endif /* OMITGOOD */
  #ifndef OMITBAD
      printLine("Calling bad()...");
      CWE78_OS_Command_Injection__wchar_t_Environment_popen_09_bad();
      printLine("Finished bad()");
  #endif /* OMITBAD */
      return 0;
  }
  
  #endif
  