SessionDialogs.java

/*
   Android Session Auth Dialogs
 
   Copyright 2013 Thincast Technologies GmbH, Author: Martin Fleisz
 
   This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
   If a copy of the MPL was not distributed with this file, You can obtain one at
   http://mozilla.org/MPL/2.0/.
 */
 
package com.freerdp.freerdpcore.presentation;
 
import android.app.Activity;
import android.app.AlertDialog;
import android.os.Handler;
import android.os.Looper;
import android.util.TypedValue;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.TextView;
 
import com.freerdp.freerdpcore.R;
import com.freerdp.freerdpcore.services.LibFreeRDP;
 
public class SessionDialogs
{
  public interface OnUserCancelListener
  {
    void onUserCancel();
  }
 
  public interface OnConnectCancelListener
  {
    void onConnectCancel();
  }
 
  private final Activity activity;
  private final OnUserCancelListener cancelListener;
  private final Handler mainHandler = new Handler(Looper.getMainLooper());
 
  private final AlertDialog dlgVerifyCertificate;
  private final AlertDialog dlgUserCredentials;
  private final View userCredView;
 
  private AlertDialog progressDialog;
 
  private boolean callbackDialogResult;
 
  public SessionDialogs(Activity activity, OnUserCancelListener cancelListener)
  {
    this.activity = activity;
    this.cancelListener = cancelListener;
 
    dlgVerifyCertificate = new AlertDialog.Builder(activity)
                               .setTitle(R.string.dlg_title_verify_certificate)
                               .setPositiveButton(android.R.string.yes,
                                                  (dialog, which) -> {
                                                    callbackDialogResult = true;
                                                    synchronized (dialog)
                                                    {
                                                      dialog.notify();
                                                    }
                                                  })
                               .setNegativeButton(android.R.string.no,
                                                  (dialog, which) -> {
                                                    callbackDialogResult = false;
                                                    notifyCancel();
                                                    synchronized (dialog)
                                                    {
                                                      dialog.notify();
                                                    }
                                                  })
                               .setCancelable(false)
                               .create();
 
    userCredView = activity.getLayoutInflater().inflate(R.layout.credentials, null, true);
    dlgUserCredentials = new AlertDialog.Builder(activity)
                             .setView(userCredView)
                             .setTitle(R.string.dlg_title_credentials)
                             .setPositiveButton(android.R.string.ok,
                                                (dialog, which) -> {
                                                  callbackDialogResult = true;
                                                  synchronized (dialog)
                                                  {
                                                    dialog.notify();
                                                  }
                                                })
                             .setNegativeButton(android.R.string.cancel,
                                                (dialog, which) -> {
                                                  callbackDialogResult = false;
                                                  notifyCancel();
                                                  synchronized (dialog)
                                                  {
                                                    dialog.notify();
                                                  }
                                                })
                             .setCancelable(false)
                             .create();
  }
 
  public boolean promptCredentials(StringBuilder username, StringBuilder domain,
                                   StringBuilder password)
  {
    callbackDialogResult = false;
 
    ((EditText)userCredView.findViewById(R.id.editTextUsername)).setText(username);
    ((EditText)userCredView.findViewById(R.id.editTextDomain)).setText(domain);
    ((EditText)userCredView.findViewById(R.id.editTextPassword)).setText(password);
 
    showOnUiThread(dlgUserCredentials);
 
    try
    {
      synchronized (dlgUserCredentials)
      {
        dlgUserCredentials.wait();
      }
    }
    catch (InterruptedException e)
    {
    }
 
    username.setLength(0);
    domain.setLength(0);
    password.setLength(0);
 
    username.append(
        ((EditText)userCredView.findViewById(R.id.editTextUsername)).getText().toString());
    domain.append(
        ((EditText)userCredView.findViewById(R.id.editTextDomain)).getText().toString());
    password.append(
        ((EditText)userCredView.findViewById(R.id.editTextPassword)).getText().toString());
 
    return callbackDialogResult;
  }
 
  public int verifyCertificate(String host, long port, String subject, String issuer,
                               String fingerprint, long flags)
  {
    String msg = activity.getResources().getString(R.string.dlg_msg_verify_certificate);
    String type = "RDP-Server";
    if ((flags & LibFreeRDP.VERIFY_CERT_FLAG_GATEWAY) != 0)
      type = "RDP-Gateway";
    if ((flags & LibFreeRDP.VERIFY_CERT_FLAG_REDIRECT) != 0)
      type = "RDP-Redirect";
    msg += "\n\n" + type + ": " + host + ":" + port;
    msg += "\n\nSubject: " + subject + "\nIssuer: " + issuer;
    if ((flags & LibFreeRDP.VERIFY_CERT_FLAG_FP_IS_PEM) != 0)
      msg += "\nCertificate: " + fingerprint;
    else
      msg += "\nFingerprint: " + fingerprint;
 
    return showVerifyDialog(msg);
  }
 
  public int verifyChangedCertificate(String host, long port, String subject, String issuer,
                                      String fingerprint, long flags)
  {
    // The "changed" variant currently shows the same information as the
    // regular verify dialog (matches prior behaviour).
    return verifyCertificate(host, port, subject, issuer, fingerprint, flags);
  }
 
  private int showVerifyDialog(String msg)
  {
    callbackDialogResult = false;
    dlgVerifyCertificate.setMessage(msg);
 
    showOnUiThread(dlgVerifyCertificate);
 
    try
    {
      synchronized (dlgVerifyCertificate)
      {
        dlgVerifyCertificate.wait();
      }
    }
    catch (InterruptedException e)
    {
    }
 
    return callbackDialogResult ? 1 : 0;
  }
 
  private void showOnUiThread(final AlertDialog dialog)
  {
    mainHandler.post(dialog::show);
  }
 
  private void notifyCancel()
  {
    if (cancelListener != null)
      cancelListener.onUserCancel();
  }
 
  public void showProgress(String title, final OnConnectCancelListener listener)
  {
    dismissProgress();
 
    int pad = (int)TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 24,
                                             activity.getResources().getDisplayMetrics());
    LinearLayout content = new LinearLayout(activity);
    content.setOrientation(LinearLayout.HORIZONTAL);
    content.setPadding(pad, pad, pad, pad);
    content.setGravity(Gravity.CENTER_VERTICAL);
 
    ProgressBar progressBar = new ProgressBar(activity);
    progressBar.setIndeterminate(true);
    content.addView(progressBar,
                    new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
                                                  ViewGroup.LayoutParams.WRAP_CONTENT));
 
    TextView messageView = new TextView(activity);
    messageView.setText(R.string.dlg_msg_connecting);
    LinearLayout.LayoutParams textParams = new LinearLayout.LayoutParams(
        ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
    textParams.leftMargin = pad;
    content.addView(messageView, textParams);
 
    progressDialog = new AlertDialog.Builder(activity)
                         .setTitle(title)
                         .setView(content)
                         .setNegativeButton(android.R.string.cancel,
                                            (dialog, which) -> {
                                              if (listener != null)
                                                listener.onConnectCancel();
                                            })
                         .setCancelable(false)
                         .create();
    progressDialog.show();
  }
 
  public void dismissProgress()
  {
    if (progressDialog != null)
    {
      progressDialog.dismiss();
      progressDialog = null;
    }
  }
}