Apps LDAP Integration for Android Apps

[Kim Luther M Fonte]

Hello everyone! Has anyone here do know some APIs or libraries packages for LDAP integration for Android app? I will be using it for AD authentication for the app. Thanks and cheers!

 

[Deleted User]

Try this

https://www.ldap.com/unboundid-ldap-sdk-for-java

https://stackoverflow.com/questions/20124111/how-to-use-ldap-authentication-in-our-app-in-android

 

[Kim Luther M Fonte]

Hi! Good day! I've already implemented it on my app but it doesn't work on Android Nougat platforms. What do I need to do? Thanks for the reply sir!

 

[Deleted User]

When you say it doesn't work, what exactly doesn't work?

 

[Kim Luther M Fonte]

The authentication itself sir. But when I try it on Android Marshmallow and below platforms, it works. I got authenticated. So I assumed that it doesn't support Nougat.

 

[Deleted User]

You don't have to call me sir, I haven't been given a knighthood yet
How are you testing your app? If you are running it on actual device, try connecting it to your computer, and running the app from Android Studio. This will allow you to run it in debug mode and investigate further what could be causing the problem.

 

[Kim Luther M Fonte]

hehehe A'right I'm testing it through my smartphone (Nougat, not working) and my friend's smartphone (lollipop, marshmallow, working). Also, I'm testing it in Bluestacks 3 (it's working here). I already connected my phone in my pc and turn it into debug mode but it doesn't prompt me any error.

 

[Deleted User]

Yeah that's a good start. You need to dig into the code a little more and understand why it's not authenticating. It could be that you're ignoring an exception being thrown. Look for the point at which the code tries to authenticate with the server and set a breakpoint there. Then step through the code and see what happens.
Without seeing your code it's difficult to offer any more advice.

 

[Kim Luther M Fonte]

The error shown is:

An error occurred while encoding the LDAP message or sending it to server xxx.xxx.xx.xxx:xxx: NetworkOnMainThreadException(trace='onNetwork(StrictMode.java:1318) / socketWrite(SocketOutputStream.java:111) / write(SocketOutputStream.java:157) / flushBuffer(BufferedOutputStream.java:82) / flush(BufferedOutputStream.java:140) / sendMessage(LDAPConnectionInternals.java:543) / sendMessage(LDAPConnection.java:4255) / process(SImpleBindRequest.java:554) / login(LoginActivity.java:111) / onClick(LoginActivity.java:53) / performClick(View.java:5723) / run(View.java:22689) / handleCallback(Handler.java:836) / dispatchMessage(Handler.java:103) / loop(Looper.java:203) / main(ActivityThread.java:6361) / invoke(Method.java:native) / run(ZygoteInit.java:1063) / main(ZygoteInit.java:924)', ldapSDKVersion=4.0.0, revision=25575

 

[Deleted User]

Need to see the code for LoginActivity

 

[Deleted User]

Actually I see your problem. The error is NetworkOnMainThreadException. That means you tried to perform a network operation on the main UI thread, which Android doesn't allow. Normally you would create a separate thread, or AsyncTask to do this.
And this should be a problem on any device you run the app on.

 

[Kim Luther M Fonte]

Here it is

String uname = _usernameText.getText().toString();
String password = _passwordText.getText().toString();

try {

            LDAPConnection ldapConnection = new LDAPConnection(URL_AD_SERVER, 389);
            SimpleBindRequest bindRequest = new SimpleBindRequest(uname, password);
            final BindResult bindResult = ldapConnection.bind(bindRequest);
            if(bindResult.getResultCode().isConnectionUsable())
            {
                loggedIn();
                final ProgressDialog progressDialog = new ProgressDialog(LoginActivity.this,
                        R.style.AppTheme_Dark_Dialog);
                progressDialog.setIndeterminate(true);
                progressDialog.setMessage("Authenticating...");
                progressDialog.show();
                new android.os.Handler().postDelayed(
                        new Runnable() {
                            public void run() {
                                // On complete call either onLoginSuccess
                                onLoginSuccess();
                                progressDialog.dismiss();
                            }
                        }, 3000);
            }
        } catch (LDAPException le) {
//            e.printStackTrace();
            String message = le.getMessage();
            if (!message.startsWith("Unable to bind as user ")) {
//                onLoginFailed();
                Toast.makeText(getBaseContext(), message, Toast.LENGTH_LONG).show();
                _loginButton.setEnabled(true);
            }

 

[Kim Luther M Fonte]

I see. How will I start creating a separate thread or AsyncTask for this? Sorry, I'm still newbie in mobile development

 

[Deleted User]

http://www.vogella.com/tutorials/AndroidBackgroundProcessing/article.html

Your LDAP connection code will go in the doInBackground() method

 

[Kim Luther M Fonte]

Can you please give me an example for that? Thank you very much 😊

 

[Kim Luther M Fonte]

Are there any other APIs or libraries for implementing LDAP authentication for Android apps? Thanks!

 

[Kim Luther M Fonte]

This issue has been solved. Thank you LV426 for the big help!