text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE78_OS_Command_Injection__char_environment_w32_spawnvp_17.c
  Label Definition File: CWE78_OS_Command_Injection.strings.label.xml
  Template File: sources-sink-17.tmpl.c
  */
  /*
   * @description
   * CWE: 78 OS Command Injection
   * BadSource: environment Read input from an environment variable
   * GoodSource: Fixed string
   * Sink: w32_spawnvp
   *    BadSink : execute command with spawnvp
   * Flow Variant: 17 Control flow: for loops
   *
   * */
  
  #include "std_testcase.h"
  
  #include <wchar.h>
  
  #ifdef _WIN32
  #define COMMAND_INT_PATH "%WINDIR%\\system32\\cmd.exe"
  #define COMMAND_INT "cmd.exe"
  #define COMMAND_ARG1 "/c"
  #define COMMAND_ARG2 "dir "
  #define COMMAND_ARG3 data
  #else /* NOT _WIN32 */
  #include <unistd.h>
  #define COMMAND_INT_PATH "/bin/sh"
  #define COMMAND_INT "sh"
  #define COMMAND_ARG1 "-c"
  #define COMMAND_ARG2 "ls "
  #define COMMAND_ARG3 data
  #endif
  
  #define ENV_VARIABLE "ADD"
  
  #ifdef _WIN32
  #define GETENV getenv
  #else
  #define GETENV getenv
  #endif
  
  #include <process.h>
  
  #ifndef OMITBAD
  
  void CWE78_OS_Command_Injection__char_environment_w32_spawnvp_17_bad()
  {
      int i;
      char * data;
      char dataBuffer[100] = COMMAND_ARG2;
      data = dataBuffer;
      for(i = 0; i < 1; i++)
      {
          {
              /* Append input from an environment variable to data */
              size_t dataLen = strlen(data);
              char * environment = GETENV(ENV_VARIABLE);
              /* If there is data in the environment variable */
              if (environment != NULL)
              {
                  /* POTENTIAL FLAW: Read data from an environment variable */
                  strncat(data+dataLen, environment, 100-dataLen-1);
              }
          }
      }
      {
          char *args[] = {COMMAND_INT_PATH, COMMAND_ARG1, COMMAND_ARG3, NULL};
          /* spawnvp - 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 */
          _spawnvp(_P_WAIT, COMMAND_INT, args);
      }
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodG2B() - use goodsource and badsink by changing the conditions on the for statements */
  static void goodG2B()
  {
      int h;
      char * data;
      char dataBuffer[100] = COMMAND_ARG2;
      data = dataBuffer;
      for(h = 0; h < 1; h++)
      {
          /* FIX: Append a fixed string to data (not user / external input) */
          strcat(data, "*.*");
      }
      {
          char *args[] = {COMMAND_INT_PATH, COMMAND_ARG1, COMMAND_ARG3, NULL};
          /* spawnvp - 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 */
          _spawnvp(_P_WAIT, COMMAND_INT, args);
      }
  }
  
  void CWE78_OS_Command_Injection__char_environment_w32_spawnvp_17_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__char_environment_w32_spawnvp_17_good();
      printLine("Finished good()");
  #endif /* OMITGOOD */
  #ifndef OMITBAD
      printLine("Calling bad()...");
      CWE78_OS_Command_Injection__char_environment_w32_spawnvp_17_bad();
      printLine("Finished bad()");
  #endif /* OMITBAD */
      return 0;
  }
  
  #endif
  