NullPointerException triggered by FSDChannel's send method

[sirealki...@gmail.com]

Hi guys;

i am trying to use FSDMsg to send commands to thales Simulator hsm 0.9.6

i saw the some useful article in andy orrock blog and i checked the jpos user list here too

there is alot of related issues but none of'em have a solution for me :(

this is my xml files:

-------hsm-base.xml-------------

<?xml version="1.0" encoding="UTF-8"?> 

<schema> 

 <field id="command" type="A" length="2" key="true" /> 

</schema>

--------hsm-resp-base.xml----------

<?xml version="1.0" encoding="UTF-8"?> 

<schema> 

    <field id="header"   type="N" length="4" /> 

  <field id="response" type="A" length="2" key="true" /> 

  <field id="error"    type="A" length="2" /> 

</schema>

---------hsm-EC.xml--------------

<?xml

version="1.0" encoding="UTF-8"?>

<schema id='EC'>

<field id="key-type" type="N" length="3" />

<field id="key-scheme" type="A" length="1" />

<field id="component" type="A" length="32" />

</schema>

---------hsm-resp-ED.xml--------

<?xml version="1.0" encoding="UTF-8"?> 

<schema id='ED'> 

   <field id="encrypted-Component" type="A" length="33" /> 

   <field id="key-check-value" type="A" length="6" /> 

</schema> 

----------here is the code where i set up the connection-------------

public int prepare(long id, Serializable ctx) {

FSDChannel channel = new FSDChannel(); 

       Logger logger=new Logger(); 

       logger.addListener(new SimpleLogListener(System.out)); 

   channel.setHost("127.0.0.1"); 

   channel.setPort(9998); 

     channel.setPackager(new DummyPackager()); 

     try {

channel.connect();

} catch (IOException e) {

e.printStackTrace();

}

    ThalesAdaptor thales=new ThalesAdaptor(); 

    FSDMsg msg=thales.encryptClearComponent(); 

   FSDISOMsg isomsg = new FSDISOMsg(msg); 

   msg.dump(System.out, "   "); 

try { 

         channel.send(isomsg); 

         channel.receive(); 

   } catch (IOException ex) { 

           ex.printStackTrace();

   } catch (ISOException ex) { 

    ex.printStackTrace(); 

   } 

return 0;

}

-----------ThalesAdaptor.java-------------

public class ThalesAdaptor {

 public FSDMsg encryptClearComponent() { 

          return (createRequest ("EC")); 

        } 

        private FSDMsg createRequest (String command) { 

              FSDMsg req = new FSDMsg("file:cfg/hsm-"); 

        if (command != null){ 

          req.set ("command", command); 

          req.set("key-type", "000");

          req.set("key-scheme", "U");

          req.set("component", "01020304050607080901020304050607");

        } 

        return req; 

       } 

        public FSDMsg command (FSDMsg request) { 

              FSDMsg resp = null; 

              try { 

                      resp = new FSDMsg ("file:cfg/hsm-resp-"); 

              } catch (Exception e) { 

              } 

              return resp; 

          } 

--------PROBLEM---------

i coudln't even send the msg, igot always an exception. This is the output

   <fsdmsg schema='file:cfg/hsm-base'>

     command: 'EC'

     key-type: '000'

     key-scheme: 'U'

     component: '01020304050607080901020304050607'

   </fsdmsg>

org.jpos.iso.ISOException: java.lang.NullPointerException (java.lang.NullPointerException)

        at org.jpos.iso.FSDISOMsg.pack(FSDISOMsg.java:44)

        at org.jpos.iso.BaseChannel.send(BaseChannel.java:588)

        at org.jpos.iso.channel.FSDChannel.send(FSDChannel.java:61)

        at com.usef.TestServer.FinancialTransactionQueryRemoteHost.prepare(FinancialTransactionQueryRemot

eHost.java:72)

        at org.jpos.transaction.TransactionManager.prepare(TransactionManager.java:484)

        at org.jpos.transaction.TransactionManager.prepare(TransactionManager.java:540)

        at org.jpos.transaction.TransactionManager.run(TransactionManager.java:262)

        at java.lang.Thread.run(Thread.java:745)

Nested:java.lang.NullPointerException

        at java.lang.String.getBytes(String.java:940)

        at org.jpos.util.FSDMsg.packToBytes(FSDMsg.java:243)

        at org.jpos.iso.FSDISOMsg.pack(FSDISOMsg.java:42)

        at org.jpos.iso.BaseChannel.send(BaseChannel.java:588)

        at org.jpos.iso.channel.FSDChannel.send(FSDChannel.java:61)

        at com.usef.TestServer.FinancialTransactionQueryRemoteHost.prepare(FinancialTransactionQueryRemot

eHost.java:72)

please help out

thanks in advance.

[chhil]

Could not reproduce your error. Had a netcat server listening on port 9998 , it received the message.

My temp folder had your 2 files

C:\Temp\thales\cfg\hsm-base.xml

C:\Temp\thales\cfg\hsm-EC.xml

I am at jpos 1.9.something.

import java.io.IOException;

import org.jdom.JDOMException;
import org.jpos.iso.FSDISOMsg;
import org.jpos.iso.ISOException;
import org.jpos.iso.channel.FSDChannel;
import org.jpos.iso.packager.DummyPackager;
import org.jpos.util.FSDMsg;
import org.jpos.util.Logger;
import org.jpos.util.SimpleLogListener;

public class ThalesAdaptor {

    public static void main(String[] args)

    {
        String command = "EC";
        FSDMsg req = new FSDMsg("file:///C:/Temp/thales/cfg/hsm-");

        req.set("command", command);
        req.set("key-type", "000");
        req.set("key-scheme", "U");
        req.set("component", "01020304050607080901020304050607");

        try {
            System.out.println(req.pack());
            FSDISOMsg msg = new FSDISOMsg(req);

            FSDChannel channel = new FSDChannel();
            Logger logger = new Logger();
            logger.addListener(new SimpleLogListener(System.out));

            channel.setHost("127.0.0.1");
            channel.setPort(9998);
            channel.setPackager(new DummyPackager());
            channel.connect();
            channel.send(msg);

        }
        catch (JDOMException | IOException | ISOException ex) {
            // TODO Auto-generated catch block
            ex.printStackTrace();
        }

    }

}

​

-chhil

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[sirealki...@gmail.com]

Thanl you so much Chhil for your time.

>Could not reproduce your error.

thats weird, i tried with your code i get the same exception

i tried changing the version of jpos (i was using 2.0.6) to  1.9.2 but in vain.

by the way i'm using maven to build my jpos server.

i used Q2 because i'll need with Qmux and other stuff.

this is my code.

public class Program  {

static void start() {

Q2 q2 = new Q2();

q2.start();

}

public static void main(String[] args) {

start();

ISOUtil.sleep(2000);

Luncher();

}

private static void Luncher(){

FSDChannel channel = new FSDChannel(); 

   Logger logger=new Logger(); 

   logger.addListener(new SimpleLogListener(System.out)); 

   channel.setHost("127.0.0.1"); 

   channel.setPort(9998); 

     channel.setPackager(new DummyPackager()); 

     try {

channel.connect();

     } catch (IOException e) {

e.printStackTrace();

     }

     

    ThalesAdaptor thales=new ThalesAdaptor(); 

    FSDMsg msg=thales.encryptClearComponent(); 

   FSDISOMsg isomsg = new FSDISOMsg(msg); 

   msg.dump(System.out, "   "); 

   try {

System.out.println("THE PACKED MSG: "+ msg.pack());

} catch (Exception e) {

e.printStackTrace();

[chhil]

Q2 is the right approach. I just doing a simple test case without the baggage.

I could reproduce your error with 2.0.x build of jpos. (My custom code is a mix and match and it was not getting the error).

If you attach the source code for jpos it becomes easier.

It was throwing an error because the charset was null.

It gets set when you configure your channel deploy file with the schema property pointing to the file location.

​

I worked through it using the configuration object below. It should work for you now.

package jashdajsdg;

import java.io.IOException;

import org.jpos.core.SimpleConfiguration;
import org.jpos.iso.FSDISOMsg;
import org.jpos.iso.ISOException;
import org.jpos.iso.ISOUtil;
import org.jpos.iso.channel.FSDChannel;
import org.jpos.iso.packager.DummyPackager;
import org.jpos.util.FSDMsg;
import org.jpos.util.Logger;
import org.jpos.util.SimpleLogListener;

public class ThalesAdaptor {

    public static void main(String[] args)

    {
        String command = "EC";
        FSDMsg req = new FSDMsg("file:///C:/Temp/thales/cfg/hsm-");

        req.set("command", command);
        req.set("key-type", "000");
        req.set("key-scheme", "U");
        req.set("component", "01020304050607080901020304050607");

        req.setCharset(ISOUtil.CHARSET);
        try {
            // System.out.println(req.pack());
            FSDISOMsg msg = new FSDISOMsg(req);

            FSDChannel channel = new FSDChannel();
            SimpleConfiguration cfg = new SimpleConfiguration();
            cfg.put("schema", "file:///C:/Temp/thales/cfg/hsm-");
            channel.setConfiguration(cfg);

            Logger logger = new Logger();
            logger.addListener(new SimpleLogListener(System.out));

            channel.setHost("127.0.0.1");
            channel.setPort(9998);
            channel.setPackager(new DummyPackager());
            channel.connect();

            channel.send(msg);

        }
        catch (IOException | ISOException ex) {
            // TODO Auto-generated catch block
            ex.printStackTrace();
        }

    }

}

​

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[Hairi]

5 Years ago I wrote a thales adaptor for thales racal based on jpos FSDMsg

 

Its @ http://m-sinergi.com/wp/hthales-docs/   Is that applicable in your use case ?

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[sirealki...@gmail.com]

Thank you so much Chhil for your help that works for me just good. thx again.

Hairi thank you for your response. i saw your HThalesAdaptor amaizing work, helped me a lot.

Thank you guys so much.

[chhil]

You are welcome.

You shouldn't go the route of instantiating Q2, do it the standard jpos way of deploying using deploy files. T

he jpos jar is an executable jar and set to run Q2.java, which will look for standard deploy folder to instantiate and run components.

Half your code of creating channel setting ip port will go away. Similarly for muxes and other jpos components.

A word of caution, mux needs a key to match request response pairs, you will be out of luck there if the HSM 

does not use a header. If there is a header you can configure the mux to match on that as the HSM echoes back the header sent

 in the request and you will have a rolling value in there for every request.

-chhil

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