Prompt the user for a password if none is configured in the VPN profile

src/frontends/android/res/layout/login_dialog.xml

@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+    Copyright (C) 2012 Tobias Brunner
+    Copyright (C) 2012 Giuliano Grassi
+    Copyright (C) 2012 Ralf Sager
+    Hochschule fuer Technik Rapperswil
+
+    This program is free software; you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by the
+    Free Software Foundation; either version 2 of the License, or (at your
+    option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+
+    This program is distributed in the hope that it will be useful, but
+    WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+-->
+<LinearLayout
+    android:layout_height="match_parent"
+    android:layout_width="match_parent"
+    android:orientation="vertical"
+    android:padding="5dp"
+    xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <TextView
+        android:layout_height="wrap_content"
+        android:layout_width="wrap_content"
+        android:text="@string/profile_username_label"
+        android:textStyle="bold" />
+
+    <EditText
+        android:layout_height="wrap_content"
+        android:layout_width="match_parent"
+        android:id="@+id/username"
+        android:enabled="false"
+        android:inputType="none" />
+
+    <TextView
+        android:layout_height="wrap_content"
+        android:layout_width="wrap_content"
+        android:text="@string/profile_password_label"
+        android:textStyle="bold" />
+
+    <EditText
+        android:layout_height="wrap_content"
+        android:layout_width="match_parent"
+        android:id="@+id/password"
+        android:inputType="textPassword|textNoSuggestions"
+        android:singleLine="true" />
+
+</LinearLayout>

src/frontends/android/res/values/strings.xml

@@ -50,4 +50,8 @@
     <string name="alert_text_nocertfound_title">No CA certificate selected</string>
     <string name="alert_text_nocertfound">Please select one or activate <i>Select automatically</i></string>
 
+    <!-- Dialogs -->
+    <string name="login_title">Enter password to connect</string>
+    <string name="login_confirm">Connect</string>
+
 </resources>

src/frontends/android/src/org/strongswan/android/ui/MainActivity.java

@@ -26,14 +26,23 @@ import org.strongswan.android.ui.VpnProfileListFragment.OnVpnProfileSelectedList
 
 import android.app.ActionBar;
 import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.AlertDialog.Builder;
+import android.app.Dialog;
+import android.app.DialogFragment;
+import android.content.Context;
+import android.content.DialogInterface;
 import android.content.Intent;
 import android.net.VpnService;
 import android.os.AsyncTask;
 import android.os.Bundle;
+import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
+import android.view.View;
 import android.view.Window;
+import android.widget.EditText;
 
 public class MainActivity extends Activity implements OnVpnProfileSelectedListener
 {
@@ -102,6 +111,8 @@ public class MainActivity extends Activity implements OnVpnProfileSelectedListen
 				{
 					Intent intent = new Intent(this, CharonVpnService.class);
 					intent.putExtra(VpnProfileDataSource.KEY_ID, activeProfile.getId());
+					/* submit the password as the profile might not store one */
+					intent.putExtra(VpnProfileDataSource.KEY_PASSWORD, activeProfile.getPassword());
 					this.startService(intent);
 				}
 				break;
@@ -114,7 +125,14 @@ public class MainActivity extends Activity implements OnVpnProfileSelectedListen
 	public void onVpnProfileSelected(VpnProfile profile)
 	{
 		activeProfile = profile;
-		prepareVpnService();
+		if (activeProfile.getPassword() == null)
+		{
+			new LoginDialog().show(getFragmentManager(), "LoginDialog");
+		}
+		else
+		{
+			prepareVpnService();
+		}
 	}
 
 	/**
@@ -142,4 +160,37 @@ public class MainActivity extends Activity implements OnVpnProfileSelectedListen
 			setProgressBarIndeterminateVisibility(false);
 		}
 	}
+
+	private class LoginDialog extends DialogFragment
+	{
+		@Override
+		public Dialog onCreateDialog(Bundle savedInstanceState)
+		{
+			LayoutInflater inflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+			View view = inflater.inflate(R.layout.login_dialog, null);
+			EditText username = (EditText)view.findViewById(R.id.username);
+			username.setText(activeProfile.getUsername());
+			final EditText password = (EditText)view.findViewById(R.id.password);
+
+			Builder adb = new AlertDialog.Builder(MainActivity.this);
+			adb.setView(view);
+			adb.setTitle(getString(R.string.login_title));
+			adb.setPositiveButton(R.string.login_confirm, new DialogInterface.OnClickListener() {
+				@Override
+				public void onClick(DialogInterface dialog, int whichButton)
+				{
+					activeProfile.setPassword(password.getText().toString().trim());
+					prepareVpnService();
+				}
+			});
+			adb.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
+				@Override
+				public void onClick(DialogInterface dialog, int which)
+				{
+					dismiss();
+				}
+			});
+			return adb.create();
+		}
+	}
 }