/* TEMPLATE GENERATED TESTCASE FILE
Filename: CWE319_Cleartext_Tx_Sensitive_Info__connect_tcp_passwordAuth_05.java
Label Definition File: CWE319_Cleartext_Tx_Sensitive_Info.label.xml
Template File: sources-sinks-05.tmpl.java
*/
/*
* @description
* CWE: 319 Cleartext Transmission of Sensitive Information
* BadSource: connect_tcp Read password using an outbound tcp connection
* GoodSource: Set password to a hardcoded value (one that was not sent over the network)
* Sinks: passwordAuth
*    GoodSink: Decrypt password before using in PasswordAuthentication()
*    BadSink : Use password directly in PasswordAuthentication()
* Flow Variant: 05 Control flow: if(privateTrue) and if(privateFalse)
*
* */





import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.net.Socket;

import java.util.logging.Level;

import java.net.PasswordAuthentication;

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;

public class CWE319_Cleartext_Tx_Sensitive_Info__connect_tcp_passwordAuth_05 extends AbstractTestCase
{
    /* The two variables below are not defined as "final", but are never
     * assigned any other value, so a tool should be able to identify that
     * reads of these will always return their initialized values.
     */
    private boolean privateTrue = true;
    private boolean privateFalse = false;

    public void bad() throws Throwable
    {
        String password;
        if (privateTrue)
        {
            password = ""; /* init password */
            /* Read data using an outbound tcp connection */
            {
                Socket socket = null;
                BufferedReader readerBuffered = null;
                InputStreamReader readerInputStream = null;
                try
                {
                    /* Read data using an outbound tcp connection */
                    socket = new Socket("host.example.org", 39544);
                    /* read input from socket */
                    /* POTENTIAL FLAW: Read password using an outbound tcp connection */
                    readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8");
                    readerBuffered = new BufferedReader(readerInputStream);
                    password = readerBuffered.readLine();
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO);
                }
                finally
                {
                    /* clean up stream reading objects */
                    try
                    {
                        if (readerBuffered != null)
                        {
                            readerBuffered.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO);
                    }

                    try
                    {
                        if (readerInputStream != null)
                        {
                            readerInputStream.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO);
                    }

                    /* clean up socket objects */
                    try
                    {
                        if (socket != null)
                        {
                            socket.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO);
                    }
                }
            }
        }
        else
        {
            /* INCIDENTAL: CWE 561 Dead Code, the code below will never run
             * but ensure password is inititialized before the Sink to avoid compiler errors */
            password = null;
        }

        if (privateTrue)
        {
            if (password != null)
            {
                /* POTENTIAL FLAW: Use password directly in PasswordAuthentication() */
                PasswordAuthentication credentials = new PasswordAuthentication("user", password.toCharArray());
                IO.writeLine(credentials.toString());
            }
        }
    }

    /* goodG2B1() - use goodsource and badsink by changing first privateTrue to privateFalse */
    private void goodG2B1() throws Throwable
    {
        String password;
        if (privateFalse)
        {
            /* INCIDENTAL: CWE 561 Dead Code, the code below will never run
             * but ensure password is inititialized before the Sink to avoid compiler errors */
            password = null;
        }
        else
        {

            /* FIX: Use a hardcoded password as the password (it was not sent over the network) */
            /* INCIDENTAL FLAW: CWE-259 Hard Coded Password */
            password = "Password1234!";

        }

        if (privateTrue)
        {
            if (password != null)
            {
                /* POTENTIAL FLAW: Use password directly in PasswordAuthentication() */
                PasswordAuthentication credentials = new PasswordAuthentication("user", password.toCharArray());
                IO.writeLine(credentials.toString());
            }
        }
    }

    /* goodG2B2() - use goodsource and badsink by reversing statements in first if */
    private void goodG2B2() throws Throwable
    {
        String password;
        if (privateTrue)
        {
            /* FIX: Use a hardcoded password as the password (it was not sent over the network) */
            /* INCIDENTAL FLAW: CWE-259 Hard Coded Password */
            password = "Password1234!";
        }
        else
        {
            /* INCIDENTAL: CWE 561 Dead Code, the code below will never run
             * but ensure password is inititialized before the Sink to avoid compiler errors */
            password = null;
        }

        if (privateTrue)
        {
            if (password != null)
            {
                /* POTENTIAL FLAW: Use password directly in PasswordAuthentication() */
                PasswordAuthentication credentials = new PasswordAuthentication("user", password.toCharArray());
                IO.writeLine(credentials.toString());
            }
        }
    }

    /* goodB2G1() - use badsource and goodsink by changing second privateTrue to privateFalse */
    private void goodB2G1() throws Throwable
    {
        String password;

        if (privateTrue)
        {
            password = ""; /* init password */
            /* Read data using an outbound tcp connection */
            {
                Socket socket = null;
                BufferedReader readerBuffered = null;
                InputStreamReader readerInputStream = null;
                try
                {
                    /* Read data using an outbound tcp connection */
                    socket = new Socket("host.example.org", 39544);
                    /* read input from socket */
                    /* POTENTIAL FLAW: Read password using an outbound tcp connection */
                    readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8");
                    readerBuffered = new BufferedReader(readerInputStream);
                    password = readerBuffered.readLine();
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO);
                }
                finally
                {
                    /* clean up stream reading objects */
                    try
                    {
                        if (readerBuffered != null)
                        {
                            readerBuffered.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO);
                    }

                    try
                    {
                        if (readerInputStream != null)
                        {
                            readerInputStream.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO);
                    }

                    /* clean up socket objects */
                    try
                    {
                        if (socket != null)
                        {
                            socket.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO);
                    }
                }
            }
        }
        else
        {
            /* INCIDENTAL: CWE 561 Dead Code, the code below will never run
             * but ensure password is inititialized before the Sink to avoid compiler errors */
            password = null;
        }

        if (privateFalse)
        {
            /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
            IO.writeLine("Benign, fixed string");
        }
        else
        {

            if (password != null)
            {
                /* FIX: Decrypt password before using in PasswordAuthentication() */
                {
                    Cipher aesCipher = Cipher.getInstance("AES");
                    /* INCIDENTAL: CWE-321: Use of Hard-coded Cryptographic Key */
                    SecretKeySpec secretKeySpec = new SecretKeySpec("ABCDEFGHABCDEFGH".getBytes("UTF-8"), "AES");
                    aesCipher.init(Cipher.DECRYPT_MODE, secretKeySpec);
                    password = new String(aesCipher.doFinal(password.getBytes("UTF-8")), "UTF-8");
                }
                PasswordAuthentication credentials = new PasswordAuthentication("user", password.toCharArray());
                IO.writeLine(credentials.toString());
            }

        }
    }

    /* goodB2G2() - use badsource and goodsink by reversing statements in second if  */
    private void goodB2G2() throws Throwable
    {
        String password;
        if (privateTrue)
        {
            password = ""; /* init password */
            /* Read data using an outbound tcp connection */
            {
                Socket socket = null;
                BufferedReader readerBuffered = null;
                InputStreamReader readerInputStream = null;
                try
                {
                    /* Read data using an outbound tcp connection */
                    socket = new Socket("host.example.org", 39544);
                    /* read input from socket */
                    /* POTENTIAL FLAW: Read password using an outbound tcp connection */
                    readerInputStream = new InputStreamReader(socket.getInputStream(), "UTF-8");
                    readerBuffered = new BufferedReader(readerInputStream);
                    password = readerBuffered.readLine();
                }
                catch (IOException exceptIO)
                {
                    IO.logger.log(Level.WARNING, "Error with stream reading", exceptIO);
                }
                finally
                {
                    /* clean up stream reading objects */
                    try
                    {
                        if (readerBuffered != null)
                        {
                            readerBuffered.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing BufferedReader", exceptIO);
                    }

                    try
                    {
                        if (readerInputStream != null)
                        {
                            readerInputStream.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing InputStreamReader", exceptIO);
                    }

                    /* clean up socket objects */
                    try
                    {
                        if (socket != null)
                        {
                            socket.close();
                        }
                    }
                    catch (IOException exceptIO)
                    {
                        IO.logger.log(Level.WARNING, "Error closing Socket", exceptIO);
                    }
                }
            }
        }
        else
        {
            /* INCIDENTAL: CWE 561 Dead Code, the code below will never run
             * but ensure password is inititialized before the Sink to avoid compiler errors */
            password = null;
        }

        if (privateTrue)
        {
            if (password != null)
            {
                /* FIX: Decrypt password before using in PasswordAuthentication() */
                {
                    Cipher aesCipher = Cipher.getInstance("AES");
                    /* INCIDENTAL: CWE-321: Use of Hard-coded Cryptographic Key */
                    SecretKeySpec secretKeySpec = new SecretKeySpec("ABCDEFGHABCDEFGH".getBytes("UTF-8"), "AES");
                    aesCipher.init(Cipher.DECRYPT_MODE, secretKeySpec);
                    password = new String(aesCipher.doFinal(password.getBytes("UTF-8")), "UTF-8");
                }
                PasswordAuthentication credentials = new PasswordAuthentication("user", password.toCharArray());
                IO.writeLine(credentials.toString());
            }
        }
    }

    public void good() throws Throwable
    {
        goodG2B1();
        goodG2B2();
        goodB2G1();
        goodB2G2();
    }

    /* 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.
     */
    public static void main(String[] args) throws ClassNotFoundException,
           InstantiationException, IllegalAccessException
    {
        mainFromParent(args);
    }
}
