/* goodB2G2() - use badsource and goodsink by reversing statements in second if  */
  private void goodB2G2() throws Throwable {
    String data;
    /* INCIDENTAL: CWE 571 Statement is Always True */
    if (IO.static_t) {
      Logger log_bad = Logger.getLogger("local-logger");
      data = ""; /* init data */
      File f = new File("C:\\data.txt");
      BufferedReader buffread = null;
      FileReader fread = null;
      try {
        /* read string from file into data */
        fread = new FileReader(f);
        buffread = new BufferedReader(fread);
        data = buffread.readLine(); // This will be reading the first "line" of the file, which
        // could be very long if there are little or no newlines in the file\
      } catch (IOException ioe) {
        log_bad.warning("Error with stream reading");
      } catch (NumberFormatException nfe) {
        log_bad.warning("Error with number parsing");
      } finally {
        /* clean up stream reading objects */
        try {
          if (buffread != null) {
            buffread.close();
          }
        } catch (IOException ioe) {
          log_bad.warning("Error closing buffread");
        } finally {
          try {
            if (fread != null) {
              fread.close();
            }
          } catch (IOException ioe) {
            log_bad.warning("Error closing fread");
          }
        }
      }
    } else {
      /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */

      data = "Testing.test";
    }
    /* INCIDENTAL: CWE 571 Statement is Always True */
    if (IO.static_t) {
      if (!data.equals("Testing.test")
          && /* FIX: classname must be one of 2 values */ !data.equals("Test.test")) {
        return;
      }
      Class<?> c = Class.forName(data);
      Object instance = c.newInstance();
      IO.writeLine(instance.toString());
    } else {
      /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */

      Class<?> c = Class.forName(data); /* FLAW: loading arbitrary class */
      Object instance = c.newInstance();

      IO.writeLine(instance.toString());
    }
  }
  /* goodG2B2() - use goodsource and badsink by reversing statements in first if */
  private void goodG2B2() throws Throwable {
    String data;
    /* INCIDENTAL: CWE 571 Statement is Always True */
    if (5 == 5) {
      data = "Testing.test";
    } else {
      /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */

      Logger log_bad = Logger.getLogger("local-logger");

      data = ""; /* init data */

      /* read user input from console with readLine*/
      BufferedReader buffread = null;
      InputStreamReader instrread = null;
      try {
        instrread = new InputStreamReader(System.in);
        buffread = new BufferedReader(instrread);
        data = buffread.readLine();
      } catch (IOException ioe) {
        log_bad.warning("Error with stream reading");
      } finally {
        /* clean up stream reading objects */
        try {
          if (buffread != null) {
            buffread.close();
          }
        } catch (IOException ioe) {
          log_bad.warning("Error closing buffread");
        } finally {
          try {
            if (instrread != null) {
              instrread.close();
            }
          } catch (IOException ioe) {
            log_bad.warning("Error closing instrread");
          }
        }
      }
    }
    /* INCIDENTAL: CWE 571 Statement is Always True */
    if (5 == 5) {
      Class<?> c = Class.forName(data); /* FLAW: loading arbitrary class */
      Object instance = c.newInstance();
      IO.writeLine(instance.toString());
    } else {
      /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */

      if (!data.equals("Testing.test")
          && /* FIX: classname must be one of 2 values */ !data.equals("Test.test")) {
        return;
      }

      Class<?> c = Class.forName(data);
      Object instance = c.newInstance();

      IO.writeLine(instance.toString());
    }
  }
  public void bad() throws Throwable {
    String data;
    /* INCIDENTAL: CWE 571 Statement is Always True */
    if (private_final_five == 5) {
      Logger log_bad = Logger.getLogger("local-logger");
      data = ""; /* init data */
      URLConnection conn = (new URL("http://www.example.org/")).openConnection();
      BufferedReader buffread = null;
      InputStreamReader instrread = null;
      try {
        /* read input from URLConnection */
        instrread = new InputStreamReader(conn.getInputStream());
        buffread = new BufferedReader(instrread);
        data = buffread.readLine(); // This will be reading the first "line" of the response body,
        // which could be very long if there are no newlines in the HTML
      } catch (IOException ioe) {
        log_bad.warning("Error with stream reading");
      } finally {
        /* clean up stream reading objects */
        try {
          if (buffread != null) {
            buffread.close();
          }
        } catch (IOException ioe) {
          log_bad.warning("Error closing buffread");
        } finally {
          try {
            if (instrread != null) {
              instrread.close();
            }
          } catch (IOException ioe) {
            log_bad.warning("Error closing instrread");
          }
        }
      }
    } else {
      /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */

      data = "Testing.test";
    }
    /* INCIDENTAL: CWE 571 Statement is Always True */
    if (private_final_five == 5) {
      Class<?> c = Class.forName(data); /* FLAW: loading arbitrary class */
      Object instance = c.newInstance();
      IO.writeLine(instance.toString());
    } else {
      /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */

      if (!data.equals("Testing.test")
          && /* FIX: classname must be one of 2 values */ !data.equals("Test.test")) {
        return;
      }

      Class<?> c = Class.forName(data);
      Object instance = c.newInstance();

      IO.writeLine(instance.toString());
    }
  }
  /* uses badsource and badsink */
  public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable {
    String data;
    if (true) {
      data = ""; /* initialize data in case id is not in query string */
      /* POTENTIAL FLAW: Parse id param out of the URL querystring (without using getParameter()) */
      {
        StringTokenizer tokenizer = new StringTokenizer(request.getQueryString(), "&");
        while (tokenizer.hasMoreTokens()) {
          String token = tokenizer.nextToken(); /* a token will be like "id=foo" */
          if (token.startsWith("id=")) /* check if we have the "id" parameter" */ {
            data = token.substring(3); /* set data to "foo" */
            break; /* exit while loop */
          }
        }
      }
    } else {
      /* INCIDENTAL: CWE 561 Dead Code, the code below will never run
       * but ensure data is inititialized before the Sink to avoid compiler errors */
      data = null;
    }

    /* POTENTIAL FLAW: Instantiate object of class named in data (which may be from external input) */
    Class<?> tempClass = Class.forName(data);
    Object tempClassObject = tempClass.newInstance();

    IO.writeLine(tempClassObject.toString()); /* Use tempClassObject in some way */
  }
  /* goodG2B() - use goodsource and badsink */
  public void goodG2B_sink(String data) throws Throwable {

    Class<?> c = Class.forName(data); /* FLAW: loading arbitrary class */
    Object instance = c.newInstance();

    IO.writeLine(instance.toString());
  }
  public void action(String data) throws Throwable {

    /* POTENTIAL FLAW: Instantiate object of class named in data (which may be from external input) */
    Class<?> tempClass = Class.forName(data);
    Object tempClassObject = tempClass.newInstance();

    IO.writeLine(tempClassObject.toString()); /* Use tempClassObject in some way */
  }
  /* goodG2B() - use goodsource and badsink */
  private void goodG2B(HttpServletRequest request, HttpServletResponse response) throws Throwable {
    String data;

    data = "Testing.test";

    Class<?> c = Class.forName(data); /* FLAW: loading arbitrary class */
    Object instance = c.newInstance();

    IO.writeLine(instance.toString());
  }
  /* goodG2B1() - use goodsource and badsink by setting the variable to false instead of true */
  private void goodG2B1() throws Throwable {
    String data;

    goodG2B1_private = false;
    data = goodG2B1_source();

    /* POTENTIAL FLAW: Instantiate object of class named in data (which may be from external input) */
    Class<?> tempClass = Class.forName(data);
    Object tempClassObject = tempClass.newInstance();

    IO.writeLine(tempClassObject.toString()); /* Use tempClassObject in some way */
  }
  /* goodG2B() - use goodsource and badsink */
  public void goodG2B_sink(
      CWE470_Unsafe_Reflection__getParameterServlet_67a.Container data_container,
      HttpServletRequest request,
      HttpServletResponse response)
      throws Throwable {
    String data = data_container.a;

    Class<?> c = Class.forName(data); /* FLAW: loading arbitrary class */
    Object instance = c.newInstance();

    IO.writeLine(instance.toString());
  }
  /* goodB2G() - use badsource and goodsink */
  public void goodB2G_sink(String data) throws Throwable {

    if (!data.equals("Testing.test")
        && /* FIX: classname must be one of 2 values */ !data.equals("Test.test")) {
      return;
    }

    Class<?> c = Class.forName(data);
    Object instance = c.newInstance();

    IO.writeLine(instance.toString());
  }
  /* goodG2B() - use goodsource and badsink */
  public void goodG2BSink(
      HashMap<Integer, String> dataHashMap,
      HttpServletRequest request,
      HttpServletResponse response)
      throws Throwable {
    String data = dataHashMap.get(2);

    /* POTENTIAL FLAW: Instantiate object of class named in data (which may be from external input) */
    Class<?> tempClass = Class.forName(data);
    Object tempClassObject = tempClass.newInstance();

    IO.writeLine(tempClassObject.toString()); /* Use tempClassObject in some way */
  }
  /* goodG2B2() - use goodsource and badsink by reversing statements in if */
  private void goodG2B2() throws Throwable {
    String data;
    if (privateReturnsTrue()) {
      /* FIX: Use a hardcoded class name */
      data = "Testing.test";
    } else {
      /* INCIDENTAL: CWE 561 Dead Code, the code below will never run
       * but ensure data is inititialized before the Sink to avoid compiler errors */
      data = null;
    }

    /* POTENTIAL FLAW: Instantiate object of class named in data (which may be from external input) */
    Class<?> tempClass = Class.forName(data);
    Object tempClassObject = tempClass.newInstance();

    IO.writeLine(tempClassObject.toString()); /* Use tempClassObject in some way */
  }
  /* goodB2G() - use badsource and goodsink */
  public void goodB2G_sink(
      CWE470_Unsafe_Reflection__getParameterServlet_67a.Container data_container,
      HttpServletRequest request,
      HttpServletResponse response)
      throws Throwable {
    String data = data_container.a;

    if (!data.equals("Testing.test")
        && /* FIX: classname must be one of 2 values */ !data.equals("Test.test")) {
      return;
    }

    Class<?> c = Class.forName(data);
    Object instance = c.newInstance();

    IO.writeLine(instance.toString());
  }
  /* uses badsource and badsink */
  public void bad() throws Throwable {
    String data;
    if (privateReturnsTrue()) {
      /* get system property user.home */
      /* POTENTIAL FLAW: Read data from a system property */
      data = System.getProperty("user.home");
    } else {
      /* INCIDENTAL: CWE 561 Dead Code, the code below will never run
       * but ensure data is inititialized before the Sink to avoid compiler errors */
      data = null;
    }

    /* POTENTIAL FLAW: Instantiate object of class named in data (which may be from external input) */
    Class<?> tempClass = Class.forName(data);
    Object tempClassObject = tempClass.newInstance();

    IO.writeLine(tempClassObject.toString()); /* Use tempClassObject in some way */
  }
  /* uses badsource and badsink */
  public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable {
    String data;
    if (PRIVATE_STATIC_FINAL_TRUE) {
      data = ""; /* initialize data in case there are no cookies */
      /* Read data from cookies */
      {
        Cookie cookieSources[] = request.getCookies();
        if (cookieSources != null) {
          /* POTENTIAL FLAW: Read data from the first cookie value */
          data = cookieSources[0].getValue();
        }
      }
    } else {
      /* INCIDENTAL: CWE 561 Dead Code, the code below will never run
       * but ensure data is inititialized before the Sink to avoid compiler errors */
      data = null;
    }

    /* POTENTIAL FLAW: Instantiate object of class named in data (which may be from external input) */
    Class<?> tempClass = Class.forName(data);
    Object tempClassObject = tempClass.newInstance();

    IO.writeLine(tempClassObject.toString()); /* Use tempClassObject in some way */
  }
  public void bad(HttpServletRequest request, HttpServletResponse response) throws Throwable {
    String data;

    Logger log_bad = Logger.getLogger("local-logger");
    data = "";

    /* parse the query string for value of 'id' */
    String id_str = null;
    StringTokenizer st = new StringTokenizer(request.getQueryString(), "&");
    while (st.hasMoreTokens()) {
      String token = st.nextToken();
      int i = token.indexOf("=");
      if ((i > 0) && (i < (token.length() - 1)) && (token.substring(0, i).equals("id"))) {
        id_str = token.substring(i + 1);
        break;
      }
    }

    if (id_str != null) {
      Connection conn = null;
      PreparedStatement statement = null;
      ResultSet rs = null;
      try {
        int id = Integer.parseInt(id_str);
        conn = IO.getDBConnection();
        statement = conn.prepareStatement("select * from pages where id=?");
        /* FLAW: no check to see whether the user has privileges to view the data */
        statement.setInt(1, id);
        rs = statement.executeQuery();
        data = rs.toString();
      } catch (SQLException se) {
        log_bad.warning("Error");
      } finally {
        /* clean up database objects */
        try {
          if (rs != null) {
            rs.close();
          }
        } catch (SQLException se) {
          log_bad.warning("Error closing rs");
        } finally {
          try {
            if (statement != null) {
              statement.close();
            }
          } catch (SQLException se) {
            log_bad.warning("Error closing statement");
          } finally {
            try {
              if (conn != null) {
                conn.close();
              }
            } catch (SQLException se) {
              log_bad.warning("Error closing conn");
            }
          }
        }
      }
    }

    Class<?> c = Class.forName(data); /* FLAW: loading arbitrary class */
    Object instance = c.newInstance();

    IO.writeLine(instance.toString());
  }
Esempio n. 17
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  public static void main(String[] args) {

    if (args.length != 0) {

      if (args[0].equals("-h") || args[0].equals("--help")) {

        System.err.println(
            "To use this main, you can either run the program with no "
                + "command line arguments to run all test cases or you can specify one or more classes to test");
        System.err.println("For example:");
        System.err.println(
            "java testcasesupport.Main testcases.CWE690_Unchecked_Return_Value_to_NULL_Pointer_Dereference.custom_function.CWE690_Unchecked_Return_Value_to_NULL_Pointer_Dereference__custom_function_01 testcases.CWE481_Assigning_instead_of_Comparing.bool.CWE481_Assigning_instead_of_Comparing__bool_01");
        System.exit(1);
      }

      /* User supplied some class names on the command line, just use those with introspection
       *
       * String classNames[] = { "CWE481_Assigning_instead_of_Comparing__boolean_01",
       *		"CWE476_Null_Pointer_Dereference__getProperty_01" };
       * could read class names from command line or use
       * http://sadun-util.sourceforge.net/api/org/sadun/util/
       * ClassPackageExplorer.html
       */

      for (String className : args) {

        try {

          /* String classNameWithPackage = "testcases." + className; */

          /* IO.writeLine("classNameWithPackage = " + classNameWithPackage); */

          Class<?> myClass = Class.forName(className);

          AbstractTestCase myObject = (AbstractTestCase) myClass.newInstance();

          myObject.runTest(className);

        } catch (Exception ex) {

          IO.writeLine("Could not run test for class " + className);
          ex.printStackTrace();
        }

        IO.writeLine(""); /* leave a blank line between classes */
      }

    } else {

      /* No command line args were used, we want to run every testcase */

      /* needed to separate these calls into other methods because
      we were running into the size limit Java has for a single method */
      runTestCWE1();
      runTestCWE2();
      runTestCWE3();
      runTestCWE4();
      runTestCWE5();
      runTestCWE6();
      runTestCWE7();
      runTestCWE8();
      runTestCWE9();
    }
  }