Merge branch 'android-import'

Adds a VPN profile import feature.

src/frontends/android/app/build.gradle

@@ -8,8 +8,8 @@ android {
         applicationId "org.strongswan.android"
         minSdkVersion 15
         targetSdkVersion 22
-        versionCode 36
+        versionCode 40
-        versionName "1.7.2"
+        versionName "1.8.0"
     }
 
     sourceSets.main {

src/frontends/android/app/src/main/AndroidManifest.xml

@@ -20,6 +20,7 @@
 
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
 
     <application
         android:name=".logic.StrongSwanApplication"
@@ -63,6 +64,36 @@
                 <category android:name="android.intent.category.DEFAULT" />
             </intent-filter>
         </activity>
+        <activity
+            android:name=".ui.VpnProfileImportActivity"
+            android:label="@string/profile_import"
+            android:taskAffinity=""
+            android:excludeFromRecents="true" >
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="http" />
+                <data android:scheme="https" />
+                <data android:scheme="file" />
+                <data android:scheme="content" />
+                <data android:mimeType="application/vnd.strongswan.profile" />
+            </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="http" />
+                <data android:scheme="https" />
+                <data android:scheme="file" />
+                <data android:scheme="content" />
+                <data android:host="*" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\.sswan" />
+                <data android:pathPattern=".*\\..*\\..*\\.sswan" />
+                <data android:pathPattern=".*\\..*\\.sswan" />
+                <data android:pathPattern=".*\\.sswan" />
+            </intent-filter>
+        </activity>
         <activity
             android:name=".ui.TrustedCertificateImportActivity"
             android:label="@string/import_certificate"

src/frontends/android/app/src/main/java/org/strongswan/android/data/VpnProfile.java

@@ -18,6 +18,8 @@
 package org.strongswan.android.data;
 
 
+import java.util.UUID;
+
 public class VpnProfile implements Cloneable
 {
 	/* While storing this as EnumSet would be nicer this simplifies storing it in a database */
@@ -28,8 +30,14 @@ public class VpnProfile implements Cloneable
 	private String mRemoteId, mLocalId;
 	private Integer mMTU, mPort, mSplitTunneling;
 	private VpnType mVpnType;
+	private UUID mUUID;
 	private long mId = -1;
 
+	public VpnProfile()
+	{
+		this.mUUID = UUID.randomUUID();
+	}
+
 	public long getId()
 	{
 		return mId;
@@ -40,6 +48,16 @@ public class VpnProfile implements Cloneable
 		this.mId = id;
 	}
 
+	public void setUUID(UUID uuid)
+	{
+		this.mUUID = uuid;
+	}
+
+	public UUID getUUID()
+	{
+		return mUUID;
+	}
+
 	public String getName()
 	{
 		return mName;
@@ -171,7 +189,12 @@ public class VpnProfile implements Cloneable
 	{
 		if (o != null && o instanceof VpnProfile)
 		{
-			return this.mId == ((VpnProfile)o).getId();
+			VpnProfile other = (VpnProfile)o;
+			if (this.mUUID != null && other.getUUID() != null)
+			{
+				return this.mUUID.equals(other.getUUID());
+			}
+			return this.mId == other.getId();
 		}
 		return false;
 	}

src/frontends/android/app/src/main/java/org/strongswan/android/data/VpnProfileDataSource.java

@@ -19,6 +19,7 @@ package org.strongswan.android.data;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.UUID;
 
 import android.content.ContentValues;
 import android.content.Context;
@@ -33,6 +34,7 @@ public class VpnProfileDataSource
 {
 	private static final String TAG = VpnProfileDataSource.class.getSimpleName();
 	public static final String KEY_ID = "_id";
+	public static final String KEY_UUID = "_uuid";
 	public static final String KEY_NAME = "name";
 	public static final String KEY_GATEWAY = "gateway";
 	public static final String KEY_VPN_TYPE = "vpn_type";
@@ -53,11 +55,12 @@ public class VpnProfileDataSource
 	private static final String DATABASE_NAME = "strongswan.db";
 	private static final String TABLE_VPNPROFILE = "vpnprofile";
 
-	private static final int DATABASE_VERSION = 8;
+	private static final int DATABASE_VERSION = 9;
 
 	public static final String DATABASE_CREATE =
 							"CREATE TABLE " + TABLE_VPNPROFILE + " (" +
 								KEY_ID + " INTEGER PRIMARY KEY AUTOINCREMENT," +
+								KEY_UUID + " TEXT UNIQUE," +
 								KEY_NAME + " TEXT NOT NULL," +
 								KEY_GATEWAY + " TEXT NOT NULL," +
 								KEY_VPN_TYPE + " TEXT NOT NULL," +
@@ -73,6 +76,7 @@ public class VpnProfileDataSource
 							");";
 	private static final String[] ALL_COLUMNS = new String[] {
 								KEY_ID,
+								KEY_UUID,
 								KEY_NAME,
 								KEY_GATEWAY,
 								KEY_VPN_TYPE,
@@ -141,6 +145,12 @@ public class VpnProfileDataSource
 				db.execSQL("ALTER TABLE " + TABLE_VPNPROFILE + " ADD " + KEY_REMOTE_ID +
 						   " TEXT;");
 			}
+			if (oldVersion < 9)
+			{
+				db.execSQL("ALTER TABLE " + TABLE_VPNPROFILE + " ADD " + KEY_UUID +
+						   " TEXT;");
+				updateColumns(db);
+			}
 		}
 
 		private void updateColumns(SQLiteDatabase db)
@@ -261,6 +271,24 @@ public class VpnProfileDataSource
 		return profile;
 	}
 
+	/**
+	 * Get a single VPN profile from the database by its UUID.
+	 * @param uuid the UUID of the VPN profile
+	 * @return the profile or null, if not found
+	 */
+	public VpnProfile getVpnProfile(UUID uuid)
+	{
+		VpnProfile profile = null;
+		Cursor cursor = mDatabase.query(TABLE_VPNPROFILE, ALL_COLUMNS,
+										KEY_UUID + "='" + uuid.toString() + "'", null, null, null, null);
+		if (cursor.moveToFirst())
+		{
+			profile = VpnProfileFromCursor(cursor);
+		}
+		cursor.close();
+		return profile;
+	}
+
 	/**
 	 * Get a list of all VPN profiles stored in the database.
 	 * @return list of VPN profiles
@@ -285,6 +313,7 @@ public class VpnProfileDataSource
 	{
 		VpnProfile profile = new VpnProfile();
 		profile.setId(cursor.getLong(cursor.getColumnIndex(KEY_ID)));
+		profile.setUUID(getUUID(cursor, cursor.getColumnIndex(KEY_UUID)));
 		profile.setName(cursor.getString(cursor.getColumnIndex(KEY_NAME)));
 		profile.setGateway(cursor.getString(cursor.getColumnIndex(KEY_GATEWAY)));
 		profile.setVpnType(VpnType.fromIdentifier(cursor.getString(cursor.getColumnIndex(KEY_VPN_TYPE))));
@@ -303,6 +332,7 @@ public class VpnProfileDataSource
 	private ContentValues ContentValuesFromVpnProfile(VpnProfile profile)
 	{
 		ContentValues values = new ContentValues();
+		values.put(KEY_UUID, profile.getUUID() != null ? profile.getUUID().toString() : null);
 		values.put(KEY_NAME, profile.getName());
 		values.put(KEY_GATEWAY, profile.getGateway());
 		values.put(KEY_VPN_TYPE, profile.getVpnType().getIdentifier());
@@ -322,4 +352,16 @@ public class VpnProfileDataSource
 	{
 		return cursor.isNull(columnIndex) ? null : cursor.getInt(columnIndex);
 	}
+
+	private UUID getUUID(Cursor cursor, int columnIndex)
+	{
+		try
+		{
+			return cursor.isNull(columnIndex) ? null : UUID.fromString(cursor.getString(columnIndex));
+		}
+		catch (Exception e)
+		{
+			return null;
+		}
+	}
 }

src/frontends/android/app/src/main/java/org/strongswan/android/ui/VpnProfileDetailActivity.java

@@ -26,6 +26,7 @@ import android.os.Bundle;
 import android.security.KeyChain;
 import android.security.KeyChainAliasCallback;
 import android.security.KeyChainException;
+import android.support.v4.content.LocalBroadcastManager;
 import android.support.v7.app.AlertDialog;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.app.AppCompatDialogFragment;
@@ -63,14 +64,14 @@ import org.strongswan.android.logic.TrustedCertificateManager;
 import org.strongswan.android.security.TrustedCertificateEntry;
 import org.strongswan.android.ui.adapter.CertificateIdentitiesAdapter;
 import org.strongswan.android.ui.widget.TextInputLayoutHelper;
+import org.strongswan.android.utils.Constants;
 
 import java.security.cert.X509Certificate;
+import java.util.UUID;
 
 public class VpnProfileDetailActivity extends AppCompatActivity
 {
 	private static final int SELECT_TRUSTED_CERTIFICATE = 0;
-	private static final int MTU_MIN = 1280;
-	private static final int MTU_MAX = 1500;
 
 	private VpnProfileDataSource mDataSource;
 	private Long mId;
@@ -453,6 +454,10 @@ public class VpnProfileDetailActivity extends AppCompatActivity
 			if (mProfile != null)
 			{
 				updateProfileData();
+				if (mProfile.getUUID() == null)
+				{
+					mProfile.setUUID(UUID.randomUUID());
+				}
 				mDataSource.updateVpnProfile(mProfile);
 			}
 			else
@@ -461,6 +466,10 @@ public class VpnProfileDetailActivity extends AppCompatActivity
 				updateProfileData();
 				mDataSource.insertProfile(mProfile);
 			}
+			Intent intent = new Intent(Constants.VPN_PROFILES_CHANGED);
+			intent.putExtra(Constants.VPN_PROFILES_SINGLE, mProfile.getId());
+			LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
+
 			setResult(RESULT_OK, new Intent().putExtra(VpnProfileDataSource.KEY_ID, mProfile.getId()));
 			finish();
 		}
@@ -496,9 +505,9 @@ public class VpnProfileDetailActivity extends AppCompatActivity
 			showCertificateAlert();
 			valid = false;
 		}
-		if (!validateInteger(mMTU, MTU_MIN, MTU_MAX))
+		if (!validateInteger(mMTU, Constants.MTU_MIN, Constants.MTU_MAX))
 		{
-			mMTUWrap.setError(String.format(getString(R.string.alert_text_out_of_range), MTU_MIN, MTU_MAX));
+			mMTUWrap.setError(String.format(getString(R.string.alert_text_out_of_range), Constants.MTU_MIN, Constants.MTU_MAX));
 			valid = false;
 		}
 		if (!validateInteger(mPort, 1, 65535))
@@ -567,8 +576,8 @@ public class VpnProfileDetailActivity extends AppCompatActivity
 				mRemoteId.setText(mProfile.getRemoteId());
 				mMTU.setText(mProfile.getMTU() != null ? mProfile.getMTU().toString() : null);
 				mPort.setText(mProfile.getPort() != null ? mProfile.getPort().toString() : null);
-				mBlockIPv4.setChecked(mProfile.getSplitTunneling() != null ? (mProfile.getSplitTunneling() & VpnProfile.SPLIT_TUNNELING_BLOCK_IPV4) != 0 : false);
+				mBlockIPv4.setChecked(mProfile.getSplitTunneling() != null && (mProfile.getSplitTunneling() & VpnProfile.SPLIT_TUNNELING_BLOCK_IPV4) != 0);
-				mBlockIPv6.setChecked(mProfile.getSplitTunneling() != null ? (mProfile.getSplitTunneling() & VpnProfile.SPLIT_TUNNELING_BLOCK_IPV6) != 0 : false);
+				mBlockIPv6.setChecked(mProfile.getSplitTunneling() != null && (mProfile.getSplitTunneling() & VpnProfile.SPLIT_TUNNELING_BLOCK_IPV6) != 0);
 				useralias = mProfile.getUserCertificateAlias();
 				local_id = mProfile.getLocalId();
 				alias = mProfile.getCertificateAlias();
@@ -686,11 +695,7 @@ public class VpnProfileDetailActivity extends AppCompatActivity
 						}
 					});
 				}
-				catch (KeyChainException e)
+				catch (KeyChainException | InterruptedException e)
-				{
-					e.printStackTrace();
-				}
-				catch (InterruptedException e)
 				{
 					e.printStackTrace();
 				}
@@ -722,11 +727,7 @@ public class VpnProfileDetailActivity extends AppCompatActivity
 			{
 				chain = KeyChain.getCertificateChain(mContext, mAlias);
 			}
-			catch (KeyChainException e)
+			catch (KeyChainException | InterruptedException e)
-			{
-				e.printStackTrace();
-			}
-			catch (InterruptedException e)
 			{
 				e.printStackTrace();
 			}

src/frontends/android/app/src/main/java/org/strongswan/android/ui/VpnProfileImportActivity.java

@@ -0,0 +1,811 @@
+/*
+ * Copyright (C) 2016 Tobias Brunner
+ * HSR 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.
+ */
+
+package org.strongswan.android.ui;
+
+import android.app.Activity;
+import android.app.LoaderManager;
+import android.app.ProgressDialog;
+import android.content.AsyncTaskLoader;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.DialogInterface;
+import android.content.Intent;
+import android.content.Loader;
+import android.net.Uri;
+import android.os.Bundle;
+import android.security.KeyChain;
+import android.security.KeyChainAliasCallback;
+import android.security.KeyChainException;
+import android.support.v4.content.LocalBroadcastManager;
+import android.support.v7.app.AppCompatActivity;
+import android.util.Base64;
+import android.view.Menu;
+import android.view.MenuInflater;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.RelativeLayout;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+import org.strongswan.android.R;
+import org.strongswan.android.data.VpnProfile;
+import org.strongswan.android.data.VpnProfileDataSource;
+import org.strongswan.android.data.VpnType;
+import org.strongswan.android.data.VpnType.VpnTypeFeature;
+import org.strongswan.android.logic.TrustedCertificateManager;
+import org.strongswan.android.security.TrustedCertificateEntry;
+import org.strongswan.android.ui.widget.TextInputLayoutHelper;
+import org.strongswan.android.utils.Constants;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URL;
+import java.net.UnknownHostException;
+import java.security.KeyStore;
+import java.security.KeyStoreException;
+import java.security.NoSuchAlgorithmException;
+import java.security.cert.CertificateException;
+import java.security.cert.CertificateFactory;
+import java.security.cert.X509Certificate;
+import java.util.UUID;
+
+import javax.net.ssl.SSLHandshakeException;
+
+public class VpnProfileImportActivity extends AppCompatActivity
+{
+	private static final String PKCS12_INSTALLED = "PKCS12_INSTALLED";
+	private static final int INSTALL_PKCS12 = 0;
+	private static final int PROFILE_LOADER = 0;
+	private static final int USER_CERT_LOADER = 1;
+
+	private VpnProfileDataSource mDataSource;
+	private ParsedVpnProfile mProfile;
+	private VpnProfile mExisting;
+	private TrustedCertificateEntry mCertEntry;
+	private TrustedCertificateEntry mUserCertEntry;
+	private String mUserCertLoading;
+	private boolean mHideImport;
+	private ProgressDialog mProgress;
+	private TextView mExistsWarning;
+	private ViewGroup mBasicDataGroup;
+	private TextView mName;
+	private TextView mGateway;
+	private TextView mSelectVpnType;
+	private ViewGroup mUsernamePassword;
+	private EditText mUsername;
+	private TextInputLayoutHelper mUsernameWrap;
+	private EditText mPassword;
+	private ViewGroup mUserCertificate;
+	private RelativeLayout mSelectUserCert;
+	private Button mImportUserCert;
+	private ViewGroup mRemoteCertificate;
+	private RelativeLayout mRemoteCert;
+
+	private LoaderManager.LoaderCallbacks<ProfileLoadResult> mProfileLoaderCallbacks = new LoaderManager.LoaderCallbacks<ProfileLoadResult>()
+	{
+		@Override
+		public Loader<ProfileLoadResult> onCreateLoader(int id, Bundle args)
+		{
+			return new ProfileLoader(VpnProfileImportActivity.this, getIntent().getData());
+		}
+
+		@Override
+		public void onLoadFinished(Loader<ProfileLoadResult> loader, ProfileLoadResult data)
+		{
+			handleProfile(data);
+		}
+
+		@Override
+		public void onLoaderReset(Loader<ProfileLoadResult> loader)
+		{
+
+		}
+	};
+
+	private LoaderManager.LoaderCallbacks<TrustedCertificateEntry> mUserCertificateLoaderCallbacks = new LoaderManager.LoaderCallbacks<TrustedCertificateEntry>()
+	{
+		@Override
+		public Loader<TrustedCertificateEntry> onCreateLoader(int id, Bundle args)
+		{
+			return new UserCertificateLoader(VpnProfileImportActivity.this, mUserCertLoading);
+		}
+
+		@Override
+		public void onLoadFinished(Loader<TrustedCertificateEntry> loader, TrustedCertificateEntry data)
+		{
+			handleUserCertificate(data);
+		}
+
+		@Override
+		public void onLoaderReset(Loader<TrustedCertificateEntry> loader)
+		{
+
+		}
+	};
+
+	@Override
+	public void onCreate(Bundle savedInstanceState)
+	{
+		super.onCreate(savedInstanceState);
+
+		getSupportActionBar().setHomeAsUpIndicator(R.drawable.ic_close_white_24dp);
+		getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+
+		mDataSource = new VpnProfileDataSource(this);
+		mDataSource.open();
+
+		setContentView(R.layout.profile_import_view);
+
+		mExistsWarning = (TextView)findViewById(R.id.exists_warning);
+		mBasicDataGroup = (ViewGroup)findViewById(R.id.basic_data_group);
+		mName = (TextView)findViewById(R.id.name);
+		mGateway = (TextView)findViewById(R.id.gateway);
+		mSelectVpnType = (TextView)findViewById(R.id.vpn_type);
+
+		mUsernamePassword = (ViewGroup)findViewById(R.id.username_password_group);
+		mUsername = (EditText)findViewById(R.id.username);
+		mUsernameWrap = (TextInputLayoutHelper) findViewById(R.id.username_wrap);
+		mPassword = (EditText)findViewById(R.id.password);
+
+		mUserCertificate = (ViewGroup)findViewById(R.id.user_certificate_group);
+		mSelectUserCert = (RelativeLayout)findViewById(R.id.select_user_certificate);
+		mImportUserCert = (Button)findViewById(R.id.import_user_certificate);
+
+		mRemoteCertificate = (ViewGroup)findViewById(R.id.remote_certificate_group);
+		mRemoteCert = (RelativeLayout)findViewById(R.id.remote_certificate);
+
+		mExistsWarning.setVisibility(View.GONE);
+		mBasicDataGroup.setVisibility(View.GONE);
+		mUsernamePassword.setVisibility(View.GONE);
+		mUserCertificate.setVisibility(View.GONE);
+		mRemoteCertificate.setVisibility(View.GONE);
+
+		mSelectUserCert.setOnClickListener(new SelectUserCertOnClickListener());
+		mImportUserCert.setOnClickListener(new View.OnClickListener() {
+			@Override
+			public void onClick(View v)
+			{
+				Intent intent = KeyChain.createInstallIntent();
+				intent.putExtra(KeyChain.EXTRA_NAME, getString(R.string.profile_cert_alias, mProfile.getName()));
+				intent.putExtra(KeyChain.EXTRA_PKCS12, mProfile.PKCS12);
+				startActivityForResult(intent, INSTALL_PKCS12);
+			}
+		});
+
+		Intent intent = getIntent();
+		String action = intent.getAction();
+		if (Intent.ACTION_VIEW.equals(action))
+		{
+			mProgress = ProgressDialog.show(this, null, getString(R.string.loading),
+											true, true, new DialogInterface.OnCancelListener() {
+				@Override
+				public void onCancel(DialogInterface dialog)
+				{
+					finish();
+				}
+			});
+
+			getLoaderManager().initLoader(PROFILE_LOADER, null, mProfileLoaderCallbacks);
+		}
+
+		if (savedInstanceState != null)
+		{
+			mUserCertLoading = savedInstanceState.getString(VpnProfileDataSource.KEY_USER_CERTIFICATE);
+			if (mUserCertLoading != null)
+			{
+				getLoaderManager().initLoader(USER_CERT_LOADER, null, mUserCertificateLoaderCallbacks);
+			}
+			mImportUserCert.setEnabled(!savedInstanceState.getBoolean(PKCS12_INSTALLED));
+		}
+	}
+
+	@Override
+	protected void onDestroy()
+	{
+		super.onDestroy();
+		mDataSource.close();
+	}
+
+	@Override
+	protected void onSaveInstanceState(Bundle outState)
+	{
+		super.onSaveInstanceState(outState);
+		if (mUserCertEntry != null)
+		{
+			outState.putString(VpnProfileDataSource.KEY_USER_CERTIFICATE, mUserCertEntry.getAlias());
+		}
+		outState.putBoolean(PKCS12_INSTALLED, !mImportUserCert.isEnabled());
+	}
+
+	@Override
+	public boolean onCreateOptionsMenu(Menu menu)
+	{
+		MenuInflater inflater = getMenuInflater();
+		inflater.inflate(R.menu.profile_import, menu);
+		if (mHideImport)
+		{
+			MenuItem item = menu.findItem(R.id.menu_accept);
+			item.setVisible(false);
+		}
+		return true;
+	}
+
+	@Override
+	public boolean onOptionsItemSelected(MenuItem item)
+	{
+		switch (item.getItemId())
+		{
+			case android.R.id.home:
+				finish();
+				return true;
+			case R.id.menu_accept:
+				saveProfile();
+				return true;
+			default:
+				return super.onOptionsItemSelected(item);
+		}
+	}
+
+	@Override
+	protected void onActivityResult(int requestCode, int resultCode, Intent data)
+	{
+		super.onActivityResult(requestCode, resultCode, data);
+		switch (requestCode)
+		{
+			case INSTALL_PKCS12:
+				if (resultCode == Activity.RESULT_OK)
+				{	/* no need to import twice */
+					mImportUserCert.setEnabled(false);
+					mSelectUserCert.performClick();
+				}
+		}
+	}
+
+	public void handleProfile(ProfileLoadResult data)
+	{
+		mProgress.dismiss();
+
+		mProfile = null;
+		if (data != null && data.ThrownException == null)
+		{
+			try
+			{
+				JSONObject obj = new JSONObject(data.Profile);
+				mProfile = parseProfile(obj);
+			}
+			catch (JSONException e)
+			{
+				mExistsWarning.setVisibility(View.VISIBLE);
+				mExistsWarning.setText(e.getLocalizedMessage());
+				mHideImport = true;
+				invalidateOptionsMenu();
+				return;
+			}
+		}
+		if (mProfile == null)
+		{
+			String error = null;
+			if (data.ThrownException != null)
+			{
+				try
+				{
+					throw data.ThrownException;
+				}
+				catch (FileNotFoundException e)
+				{
+					error = getString(R.string.profile_import_failed_not_found);
+				}
+				catch (UnknownHostException e)
+				{
+					error = getString(R.string.profile_import_failed_host);
+				}
+				catch (SSLHandshakeException e)
+				{
+					error = getString(R.string.profile_import_failed_tls);
+				}
+				catch (Exception e)
+				{
+					e.printStackTrace();
+				}
+			}
+			if (error != null)
+			{
+				Toast.makeText(this, getString(R.string.profile_import_failed_detail, error), Toast.LENGTH_LONG).show();
+			}
+			else
+			{
+				Toast.makeText(this, R.string.profile_import_failed, Toast.LENGTH_LONG).show();
+			}
+			finish();
+			return;
+		}
+		mExisting = mDataSource.getVpnProfile(mProfile.getUUID());
+		mExistsWarning.setVisibility(mExisting != null ? View.VISIBLE : View.GONE);
+
+		mBasicDataGroup.setVisibility(View.VISIBLE);
+		mName.setText(mProfile.getName());
+		mGateway.setText(mProfile.getGateway());
+		mSelectVpnType.setText(getResources().getStringArray(R.array.vpn_types)[mProfile.getVpnType().ordinal()]);
+
+		mUsernamePassword.setVisibility(mProfile.getVpnType().has(VpnTypeFeature.USER_PASS) ? View.VISIBLE : View.GONE);
+		if (mProfile.getVpnType().has(VpnTypeFeature.USER_PASS))
+		{
+			mUsername.setText(mProfile.getUsername());
+			if (mProfile.getUsername() != null && !mProfile.getUsername().isEmpty())
+			{
+				mUsername.setEnabled(false);
+			}
+		}
+
+		mUserCertificate.setVisibility(mProfile.getVpnType().has(VpnTypeFeature.CERTIFICATE) ? View.VISIBLE : View.GONE);
+		mRemoteCertificate.setVisibility(mProfile.Certificate != null ? View.VISIBLE : View.GONE);
+		mImportUserCert.setVisibility(mProfile.PKCS12 != null ? View.VISIBLE : View.GONE);
+
+		updateUserCertView();
+
+		if (mProfile.Certificate != null)
+		{
+			try
+			{
+				CertificateFactory factory = CertificateFactory.getInstance("X.509");
+				X509Certificate certificate = (X509Certificate)factory.generateCertificate(new ByteArrayInputStream(mProfile.Certificate));
+				KeyStore store = KeyStore.getInstance("LocalCertificateStore");
+				store.load(null, null);
+				String alias = store.getCertificateAlias(certificate);
+				mCertEntry = new TrustedCertificateEntry(alias, certificate);
+				((TextView)mRemoteCert.findViewById(android.R.id.text1)).setText(mCertEntry.getSubjectPrimary());
+				((TextView)mRemoteCert.findViewById(android.R.id.text2)).setText(mCertEntry.getSubjectSecondary());
+			}
+			catch (CertificateException | NoSuchAlgorithmException | KeyStoreException | IOException e)
+			{
+				e.printStackTrace();
+				mRemoteCertificate.setVisibility(View.GONE);
+			}
+		}
+	}
+
+	private void handleUserCertificate(TrustedCertificateEntry data)
+	{
+		mUserCertEntry = data;
+		mUserCertLoading = null;
+		updateUserCertView();
+	}
+
+	private void updateUserCertView()
+	{
+		if (mUserCertLoading != null)
+		{
+			((TextView)mSelectUserCert.findViewById(android.R.id.text1)).setText(mUserCertLoading);
+			((TextView)mSelectUserCert.findViewById(android.R.id.text2)).setText(R.string.loading);
+		}
+		else if (mUserCertEntry != null)
+		{	/* clear any errors and set the new data */
+			((TextView)mSelectUserCert.findViewById(android.R.id.text1)).setError(null);
+			((TextView)mSelectUserCert.findViewById(android.R.id.text1)).setText(mUserCertEntry.getAlias());
+			((TextView)mSelectUserCert.findViewById(android.R.id.text2)).setText(mUserCertEntry.getCertificate().getSubjectDN().toString());
+		}
+		else
+		{
+			((TextView)mSelectUserCert.findViewById(android.R.id.text1)).setText(R.string.profile_user_select_certificate_label);
+			((TextView)mSelectUserCert.findViewById(android.R.id.text2)).setText(R.string.profile_user_select_certificate);
+		}
+	}
+
+	private ParsedVpnProfile parseProfile(JSONObject obj) throws JSONException
+	{
+		UUID uuid;
+		try
+		{
+			uuid = UUID.fromString(obj.getString("uuid"));
+		}
+		catch (IllegalArgumentException e)
+		{
+			e.printStackTrace();
+			return null;
+		}
+		ParsedVpnProfile profile = new ParsedVpnProfile();
+
+		profile.setUUID(uuid);
+		profile.setName(obj.getString("name"));
+		VpnType type = VpnType.fromIdentifier(obj.getString("type"));
+		profile.setVpnType(type);
+
+		JSONObject remote = obj.getJSONObject("remote");
+		profile.setGateway(remote.getString("addr"));
+		profile.setPort(getInteger(remote, "port", 1, 65535));
+		profile.setRemoteId(remote.optString("id", null));
+		profile.Certificate = decodeBase64(remote.optString("cert", null));
+
+		JSONObject local = obj.optJSONObject("local");
+		if (local != null)
+		{
+			if (type.has(VpnTypeFeature.USER_PASS))
+			{
+				profile.setUsername(local.optString("eap_id", null));
+			}
+
+			if (type.has(VpnTypeFeature.CERTIFICATE))
+			{
+				profile.setLocalId(local.optString("id", null));
+				profile.PKCS12 = decodeBase64(local.optString("p12", null));
+			}
+		}
+
+		profile.setMTU(getInteger(obj, "mtu", Constants.MTU_MIN, Constants.MTU_MAX));
+		JSONObject split = obj.optJSONObject("split-tunneling");
+		if (split != null)
+		{
+			int st = 0;
+			st |= split.optBoolean("block-ipv4") ? VpnProfile.SPLIT_TUNNELING_BLOCK_IPV4 : 0;
+			st |= split.optBoolean("block-ipv6") ? VpnProfile.SPLIT_TUNNELING_BLOCK_IPV6 : 0;
+			profile.setSplitTunneling(st == 0 ? null : st);
+		}
+		return profile;
+	}
+
+	private Integer getInteger(JSONObject obj, String key, int min, int max)
+	{
+		Integer res = obj.optInt(key);
+		return res < min || res > max ? null : res;
+	}
+
+	/**
+	 * Save or update the profile depending on whether we actually have a
+	 * profile object or not (this was created in updateProfileData)
+	 */
+	private void saveProfile()
+	{
+		if (verifyInput())
+		{
+			updateProfileData();
+			if (mExisting != null)
+			{
+				mProfile.setId(mExisting.getId());
+				mDataSource.updateVpnProfile(mProfile);
+			}
+			else
+			{
+				mDataSource.insertProfile(mProfile);
+			}
+			if (mCertEntry != null)
+			{
+				try
+				{	/* store the CA/server certificate */
+					KeyStore store = KeyStore.getInstance("LocalCertificateStore");
+					store.load(null, null);
+					store.setCertificateEntry(null, mCertEntry.getCertificate());
+					TrustedCertificateManager.getInstance().reset();
+				}
+				catch (KeyStoreException | CertificateException | NoSuchAlgorithmException | IOException e)
+				{
+					e.printStackTrace();
+				}
+			}
+			Intent intent = new Intent(Constants.VPN_PROFILES_CHANGED);
+			intent.putExtra(Constants.VPN_PROFILES_SINGLE, mProfile.getId());
+			LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
+
+			intent = new Intent(this, MainActivity.class);
+			intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+			startActivity(intent);
+
+			setResult(RESULT_OK, new Intent().putExtra(VpnProfileDataSource.KEY_ID, mProfile.getId()));
+			finish();
+		}
+	}
+
+	/**
+	 * Verify the user input and display error messages.
+	 * @return true if the input is valid
+	 */
+	private boolean verifyInput()
+	{
+		boolean valid = true;
+		if (mProfile.getVpnType().has(VpnTypeFeature.USER_PASS))
+		{
+			if (mUsername.getText().toString().trim().isEmpty())
+			{
+				mUsernameWrap.setError(getString(R.string.alert_text_no_input_username));
+				valid = false;
+			}
+		}
+		if (mProfile.getVpnType().has(VpnTypeFeature.CERTIFICATE) && mUserCertEntry == null)
+		{	/* let's show an error icon */
+			((TextView)mSelectUserCert.findViewById(android.R.id.text1)).setError("");
+			valid = false;
+		}
+		return valid;
+	}
+
+	/**
+	 * Update the profile object with the data entered by the user
+	 */
+	private void updateProfileData()
+	{
+		if (mProfile.getVpnType().has(VpnTypeFeature.USER_PASS))
+		{
+			mProfile.setUsername(mUsername.getText().toString().trim());
+			String password = mPassword.getText().toString().trim();
+			password = password.isEmpty() ? null : password;
+			mProfile.setPassword(password);
+		}
+		if (mProfile.getVpnType().has(VpnTypeFeature.CERTIFICATE))
+		{
+			mProfile.setUserCertificateAlias(mUserCertEntry.getAlias());
+		}
+		if (mCertEntry != null)
+		{
+			mProfile.setCertificateAlias(mCertEntry.getAlias());
+		}
+	}
+
+	/**
+	 * Load the JSON-encoded VPN profile from the given URI
+	 */
+	private static class ProfileLoader extends AsyncTaskLoader<ProfileLoadResult>
+	{
+		private final Uri mUri;
+		private ProfileLoadResult mData;
+
+		public ProfileLoader(Context context, Uri uri)
+		{
+			super(context);
+			mUri = uri;
+		}
+
+		@Override
+		public ProfileLoadResult loadInBackground()
+		{
+			ProfileLoadResult result = new ProfileLoadResult();
+			InputStream in = null;
+
+			if (ContentResolver.SCHEME_CONTENT.equals(mUri.getScheme()) ||
+				ContentResolver.SCHEME_FILE.equals(mUri.getScheme()))
+			{
+				try
+				{
+					in = getContext().getContentResolver().openInputStream(mUri);
+				}
+				catch (FileNotFoundException e)
+				{
+					result.ThrownException = e;
+				}
+			}
+			else
+			{
+				try
+				{
+					URL url = new URL(mUri.toString());
+					in = url.openStream();
+				}
+				catch (IOException e)
+				{
+					result.ThrownException = e;
+				}
+			}
+			if (in != null)
+			{
+				result.Profile = streamToString(in);
+			}
+			return result;
+		}
+
+		@Override
+		protected void onStartLoading()
+		{
+			if (mData != null)
+			{	/* if we have data ready, deliver it directly */
+				deliverResult(mData);
+			}
+			if (takeContentChanged() || mData == null)
+			{
+				forceLoad();
+			}
+		}
+
+		@Override
+		public void deliverResult(ProfileLoadResult data)
+		{
+			if (isReset())
+			{
+				return;
+			}
+			mData = data;
+			if (isStarted())
+			{	/* if it is started we deliver the data directly,
+				 * otherwise this is handled in onStartLoading */
+				super.deliverResult(data);
+			}
+		}
+
+		@Override
+		protected void onReset()
+		{
+			mData = null;
+			super.onReset();
+		}
+
+		private String streamToString(InputStream in)
+		{
+			ByteArrayOutputStream out = new ByteArrayOutputStream();
+			byte[] buf = new byte[1024];
+			int len;
+
+			try
+			{
+				while ((len = in.read(buf)) != -1)
+				{
+					out.write(buf, 0, len);
+				}
+				return out.toString("UTF-8");
+			}
+			catch (IOException e)
+			{
+				e.printStackTrace();
+			}
+			return null;
+		}
+	}
+
+	private static class ProfileLoadResult
+	{
+		public String Profile;
+		public Exception ThrownException;
+	}
+
+	/**
+	 * Ask the user to select an available certificate.
+	 */
+	private class SelectUserCertOnClickListener implements View.OnClickListener, KeyChainAliasCallback
+	{
+		@Override
+		public void onClick(View v)
+		{
+			String alias = null;
+			if (mUserCertEntry != null)
+			{
+				alias = mUserCertEntry.getAlias();
+				mUserCertEntry = null;
+			}
+			else if (mProfile != null)
+			{
+				alias = getString(R.string.profile_cert_alias, mProfile.getName());
+			}
+			KeyChain.choosePrivateKeyAlias(VpnProfileImportActivity.this, this, new String[] { "RSA" }, null, null, -1, alias);
+		}
+
+		@Override
+		public void alias(final String alias)
+		{
+			/* alias() is not called from our main thread */
+			runOnUiThread(new Runnable() {
+				@Override
+				public void run()
+				{
+					mUserCertLoading = alias;
+					updateUserCertView();
+					if (alias != null)
+					{	/* otherwise the dialog was canceled, the request denied */
+						getLoaderManager().restartLoader(USER_CERT_LOADER, null, mUserCertificateLoaderCallbacks);
+					}
+				}
+			});
+		}
+	}
+
+	/**
+	 * Load the selected user certificate asynchronously.  This cannot be done
+	 * from the main thread as getCertificateChain() calls back to our main
+	 * thread to bind to the KeyChain service resulting in a deadlock.
+	 */
+	private static class UserCertificateLoader extends AsyncTaskLoader<TrustedCertificateEntry>
+	{
+		private final String mAlias;
+		private TrustedCertificateEntry mData;
+
+		public UserCertificateLoader(Context context, String alias)
+		{
+			super(context);
+			mAlias = alias;
+		}
+
+		@Override
+		public TrustedCertificateEntry loadInBackground()
+		{
+			X509Certificate[] chain = null;
+			try
+			{
+				chain = KeyChain.getCertificateChain(getContext(), mAlias);
+			}
+			catch (KeyChainException | InterruptedException e)
+			{
+				e.printStackTrace();
+			}
+			if (chain != null && chain.length > 0)
+			{
+				return new TrustedCertificateEntry(mAlias, chain[0]);
+			}
+			return null;
+		}
+
+		@Override
+		protected void onStartLoading()
+		{
+			if (mData != null)
+			{	/* if we have data ready, deliver it directly */
+				deliverResult(mData);
+			}
+			if (takeContentChanged() || mData == null)
+			{
+				forceLoad();
+			}
+		}
+
+		@Override
+		public void deliverResult(TrustedCertificateEntry data)
+		{
+			if (isReset())
+			{
+				return;
+			}
+			mData = data;
+			if (isStarted())
+			{	/* if it is started we deliver the data directly,
+				 * otherwise this is handled in onStartLoading */
+				super.deliverResult(data);
+			}
+		}
+
+		@Override
+		protected void onReset()
+		{
+			mData = null;
+			super.onReset();
+		}
+	}
+
+	private byte[] decodeBase64(String encoded)
+	{
+		if (encoded == null || encoded.isEmpty())
+		{
+			return null;
+		}
+		byte[] data = null;
+		try
+		{
+			data = Base64.decode(encoded, Base64.DEFAULT);
+		}
+		catch (IllegalArgumentException e)
+		{
+			e.printStackTrace();
+		}
+		return data;
+	}
+
+	private class ParsedVpnProfile extends VpnProfile
+	{
+		public byte[] Certificate;
+		public byte[] PKCS12;
+	}
+}

src/frontends/android/app/src/main/java/org/strongswan/android/ui/VpnProfileListFragment.java

@@ -17,12 +17,14 @@
 
 package org.strongswan.android.ui;
 
-import android.app.Activity;
+import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
+import android.content.IntentFilter;
 import android.content.res.TypedArray;
 import android.os.Bundle;
 import android.support.v4.app.Fragment;
+import android.support.v4.content.LocalBroadcastManager;
 import android.util.AttributeSet;
 import android.view.ActionMode;
 import android.view.LayoutInflater;
@@ -41,9 +43,11 @@ import org.strongswan.android.R;
 import org.strongswan.android.data.VpnProfile;
 import org.strongswan.android.data.VpnProfileDataSource;
 import org.strongswan.android.ui.adapter.VpnProfileAdapter;
+import org.strongswan.android.utils.Constants;
 
 import java.util.ArrayList;
 import java.util.HashSet;
+import java.util.Iterator;
 import java.util.List;
 
 public class VpnProfileListFragment extends Fragment
@@ -58,11 +62,47 @@ public class VpnProfileListFragment extends Fragment
 	private OnVpnProfileSelectedListener mListener;
 	private boolean mReadOnly;
 
+	private BroadcastReceiver mProfilesChanged = new BroadcastReceiver()
+	{
+		@Override
+		public void onReceive(Context context, Intent intent)
+		{
+			long id, ids[];
+			if ((id = intent.getLongExtra(Constants.VPN_PROFILES_SINGLE, 0)) > 0)
+			{
+				VpnProfile profile = mDataSource.getVpnProfile(id);
+				if (profile != null)
+				{	/* in case this was an edit, we remove it first */
+					mVpnProfiles.remove(profile);
+					mVpnProfiles.add(profile);
+					mListAdapter.notifyDataSetChanged();
+				}
+			}
+			else if ((ids = intent.getLongArrayExtra(Constants.VPN_PROFILES_MULTIPLE)) != null)
+			{
+				for (long i : ids)
+				{
+					Iterator<VpnProfile> profiles = mVpnProfiles.iterator();
+					while (profiles.hasNext())
+					{
+						VpnProfile profile = profiles.next();
+						if (profile.getId() == i)
+						{
+							profiles.remove();
+							break;
+						}
+					}
+				}
+				mListAdapter.notifyDataSetChanged();
+			}
+		}
+	};
+
 	/**
 	 * The activity containing this fragment should implement this interface
 	 */
 	public interface OnVpnProfileSelectedListener {
-		public void onVpnProfileSelected(VpnProfile profile);
+		void onVpnProfileSelected(VpnProfile profile);
 	}
 
 	@Override
@@ -116,6 +156,9 @@ public class VpnProfileListFragment extends Fragment
 		mVpnProfiles = mDataSource.getAllVpnProfiles();
 
 		mListAdapter = new VpnProfileAdapter(getActivity(), R.layout.profile_list_item, mVpnProfiles);
+
+		IntentFilter profileChangesFilter = new IntentFilter(Constants.VPN_PROFILES_CHANGED);
+		LocalBroadcastManager.getInstance(getActivity()).registerReceiver(mProfilesChanged, profileChangesFilter);
 	}
 
 	@Override
@@ -123,6 +166,7 @@ public class VpnProfileListFragment extends Fragment
 	{
 		super.onDestroy();
 		mDataSource.close();
+		LocalBroadcastManager.getInstance(getActivity()).unregisterReceiver(mProfilesChanged);
 	}
 
 	@Override
@@ -157,30 +201,6 @@ public class VpnProfileListFragment extends Fragment
 		}
 	}
 
-	@Override
-	public void onActivityResult(int requestCode, int resultCode, Intent data)
-	{
-		switch (requestCode)
-		{
-			case ADD_REQUEST:
-			case EDIT_REQUEST:
-				if (resultCode != Activity.RESULT_OK)
-				{
-					return;
-				}
-				long id = data.getLongExtra(VpnProfileDataSource.KEY_ID, 0);
-				VpnProfile profile = mDataSource.getVpnProfile(id);
-				if (profile != null)
-				{	/* in case this was an edit, we remove it first */
-					mVpnProfiles.remove(profile);
-					mVpnProfiles.add(profile);
-					mListAdapter.notifyDataSetChanged();
-				}
-				return;
-		}
-		super.onActivityResult(requestCode, resultCode, data);
-	}
-
 	private final OnItemClickListener mVpnProfileClicked = new OnItemClickListener() {
 		@Override
 		public void onItemClick(AdapterView<?> a, View v, int position, long id)
@@ -213,7 +233,7 @@ public class VpnProfileListFragment extends Fragment
 			MenuInflater inflater = mode.getMenuInflater();
 			inflater.inflate(R.menu.profile_list_context, menu);
 			mEditProfile = menu.findItem(R.id.edit_profile);
-			mSelected = new HashSet<Integer>();
+			mSelected = new HashSet<>();
 			mode.setTitle(R.string.select_profiles);
 			return true;
 		}
@@ -234,17 +254,21 @@ public class VpnProfileListFragment extends Fragment
 				}
 				case R.id.delete_profile:
 				{
-					ArrayList<VpnProfile> profiles = new ArrayList<VpnProfile>();
+					ArrayList<VpnProfile> profiles = new ArrayList<>();
 					for (int position : mSelected)
 					{
 						profiles.add((VpnProfile)mListView.getItemAtPosition(position));
 					}
-					for (VpnProfile profile : profiles)
+					long ids[] = new long[profiles.size()];
+					for (int i = 0; i < profiles.size(); i++)
 					{
+						VpnProfile profile = profiles.get(i);
+						ids[i] = profile.getId();
 						mDataSource.deleteVpnProfile(profile);
-						mVpnProfiles.remove(profile);
 					}
-					mListAdapter.notifyDataSetChanged();
+					Intent intent = new Intent(Constants.VPN_PROFILES_CHANGED);
+					intent.putExtra(Constants.VPN_PROFILES_MULTIPLE, ids);
+					LocalBroadcastManager.getInstance(getActivity()).sendBroadcast(intent);
 					Toast.makeText(VpnProfileListFragment.this.getActivity(),
 								   R.string.profiles_deleted, Toast.LENGTH_SHORT).show();
 					break;

src/frontends/android/app/src/main/java/org/strongswan/android/utils/Constants.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2016 Tobias Brunner
+ * 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.
+ */
+
+package org.strongswan.android.utils;
+
+public final class Constants
+{
+	/**
+	 * Intent action used to notify about changes to the VPN profiles
+	 */
+	public static final String VPN_PROFILES_CHANGED = "org.strongswan.android.VPN_PROFILES_CHANGED";
+
+	/**
+	 * Used in the intent above to notify about edits or inserts of a VPN profile (long)
+	 */
+	public static final String VPN_PROFILES_SINGLE = "org.strongswan.android.VPN_PROFILES_SINGLE";
+
+	/**
+	 * Used in the intent above to notify about the deletion of multiple VPN profiles (array of longs)
+	 */
+	public static final String VPN_PROFILES_MULTIPLE = "org.strongswan.android.VPN_PROFILES_MULTIPLE";
+
+	/**
+	 * Limits for MTU
+	 */
+	public static final int MTU_MAX = 1500;
+	public static final int MTU_MIN = 1280;
+}

src/frontends/android/app/src/main/res/layout/profile_import_view.xml

@@ -0,0 +1,196 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright (C) 2016 Tobias Brunner
+    HSR 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.
+-->
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+            xmlns:app="http://schemas.android.com/apk/res-auto"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent" >
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:padding="10dp"
+        android:animateLayoutChanges="true" >
+
+        <TextView
+            android:id="@+id/exists_warning"
+            android:background="@drawable/state_background"
+            android:padding="8dp"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="8dp"
+            android:drawableLeft="@android:drawable/ic_dialog_alert"
+            android:drawableStart="@android:drawable/ic_dialog_alert"
+            android:drawablePadding="8dp"
+            android:textStyle="bold"
+            android:text="@string/profile_import_exists"
+            android:textAppearance="?android:attr/textAppearanceSmall"
+            android:textColor="?android:attr/textColorPrimary" />
+
+        <LinearLayout
+            android:id="@+id/basic_data_group"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical" >
+
+            <TextView
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginLeft="4dp"
+                android:layout_marginStart="4dp"
+                android:textSize="12sp"
+                android:text="@string/profile_name_label_simple" />
+
+            <TextView
+                android:id="@+id/name"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginLeft="4dp"
+                android:layout_marginStart="4dp"
+                android:textAppearance="?android:attr/textAppearanceMedium"
+                android:textColor="?android:attr/textColorPrimary" />
+
+            <TextView
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="6dp"
+                android:layout_marginLeft="4dp"
+                android:layout_marginStart="4dp"
+                android:textSize="12sp"
+                android:text="@string/profile_gateway_label" />
+
+            <TextView
+                android:id="@+id/gateway"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginLeft="4dp"
+                android:layout_marginStart="4dp"
+                android:textAppearance="?android:attr/textAppearanceMedium"
+                android:textColor="?android:attr/textColorPrimary" />
+
+            <TextView
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="6dp"
+                android:layout_marginLeft="4dp"
+                android:layout_marginStart="4dp"
+                android:textSize="12sp"
+                android:text="@string/profile_vpn_type_label" />
+
+            <TextView
+                android:id="@+id/vpn_type"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginBottom="4dp"
+                android:layout_marginLeft="4dp"
+                android:layout_marginStart="4dp"
+                android:textAppearance="?android:attr/textAppearanceMedium"
+                android:textColor="?android:attr/textColorPrimary" />
+
+        </LinearLayout>
+
+        <LinearLayout
+            android:id="@+id/username_password_group"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            android:layout_marginTop="6dp">
+
+            <org.strongswan.android.ui.widget.TextInputLayoutHelper
+                android:id="@+id/username_wrap"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content" >
+
+                <android.support.design.widget.TextInputEditText
+                    android:id="@+id/username"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:singleLine="true"
+                    android:inputType="textNoSuggestions"
+                    android:hint="@string/profile_username_label" />
+
+            </org.strongswan.android.ui.widget.TextInputLayoutHelper>
+
+            <org.strongswan.android.ui.widget.TextInputLayoutHelper
+                android:id="@+id/password_wrap"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="4dp"
+                app:helper_text="@string/profile_password_hint" >
+
+                <android.support.design.widget.TextInputEditText
+                    android:id="@+id/password"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:singleLine="true"
+                    android:inputType="textPassword|textNoSuggestions"
+                    android:hint="@string/profile_password_label" />
+
+            </org.strongswan.android.ui.widget.TextInputLayoutHelper>
+
+        </LinearLayout>
+
+        <LinearLayout
+            android:id="@+id/user_certificate_group"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="4dp"
+            android:orientation="vertical" >
+
+            <TextView
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="4dp"
+                android:layout_marginLeft="4dp"
+                android:textSize="12sp"
+                android:text="@string/profile_user_certificate_label" />
+
+            <include
+                android:id="@+id/select_user_certificate"
+                layout="@layout/two_line_button" />
+
+            <Button
+                android:id="@+id/import_user_certificate"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginLeft="4dp"
+                android:layout_marginRight="4dp"
+                android:text="@string/profile_cert_import" />
+
+        </LinearLayout>
+
+        <LinearLayout
+            android:id="@+id/remote_certificate_group"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="4dp"
+            android:orientation="vertical">
+
+            <TextView
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginLeft="4dp"
+                android:textSize="12sp"
+                android:text="@string/profile_ca_label" />
+
+            <include
+                android:id="@+id/remote_certificate"
+                layout="@layout/two_line_button" />
+        </LinearLayout>
+
+    </LinearLayout>
+
+</ScrollView>

src/frontends/android/app/src/main/res/menu/profile_import.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright (C) 2016 Tobias Brunner
+    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.
+-->
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+      xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <item
+        android:id="@+id/menu_accept"
+        android:title="@string/profile_edit_import"
+        app:showAsAction="always|withText" />
+
+</menu>

src/frontends/android/app/src/main/res/values-de/strings.xml

@@ -48,8 +48,10 @@
 
     <!-- VPN profile details -->
     <string name="profile_edit_save">Speichern</string>
+    <string name="profile_edit_import">Importieren</string>
     <string name="profile_edit_cancel">Abbrechen</string>
     <string name="profile_name_label">Profilname (optional)</string>
+    <string name="profile_name_label_simple">Profilname</string>
     <string name="profile_name_hint">Standardwert ist der konfigurierte Server</string>
     <string name="profile_name_hint_gateway">Standardwert ist \"%1$s\"</string>
     <string name="profile_gateway_label">Server</string>
@@ -80,6 +82,15 @@
     <string name="profile_split_tunneling_label">Split-Tunneling</string>
     <string name="profile_split_tunnelingv4_title">Blockiere IPv4 Verkehr der nicht für das VPN bestimmt ist</string>
     <string name="profile_split_tunnelingv6_title">Blockiere IPv6 Verkehr der nicht für das VPN bestimmt ist</string>
+    <string name="profile_import">VPN Profile importieren</string>
+    <string name="profile_import_failed">VPN Profil-Import fehlgeschlagen</string>
+    <string name="profile_import_failed_detail">VPN Profil-Import fehlgeschlagen: %1$s</string>
+    <string name="profile_import_failed_not_found">Datei nicht gefunden</string>
+    <string name="profile_import_failed_host">Host unbekannt</string>
+    <string name="profile_import_failed_tls">TLS-Handshake fehlgeschlagen</string>
+    <string name="profile_import_exists">Dieses VPN Profil existiert bereits, die bestehenden Einstellungen werden ersetzt.</string>
+    <string name="profile_cert_import">Zertifikat aus VPN Profil importieren</string>
+    <string name="profile_cert_alias">Zertifikat für \"%1$s\"</string>
     <!-- Warnings/Notifications in the details view -->
     <string name="alert_text_no_input_gateway">Ein Wert wird benötigt, um die Verbindung aufbauen zu können</string>
     <string name="alert_text_no_input_username">Bitte geben Sie Ihren Benutzernamen ein</string>

src/frontends/android/app/src/main/res/values-pl/strings.xml

@@ -48,8 +48,10 @@
 
     <!-- VPN profile details -->
     <string name="profile_edit_save">Zapisz</string>
+    <string name="profile_edit_import">Import</string>
     <string name="profile_edit_cancel">Anuluj</string>
     <string name="profile_name_label">Nazwa profilu (opcjonalny)</string>
+    <string name="profile_name_label_simple">Nazwa profilu</string>
     <string name="profile_name_hint">Defaults to the configured server</string>
     <string name="profile_name_hint_gateway">Defaults to \"%1$s\"</string>
     <string name="profile_gateway_label">Serwer</string>
@@ -80,6 +82,15 @@
     <string name="profile_split_tunneling_label">Split tunneling</string>
     <string name="profile_split_tunnelingv4_title">Block IPv4 traffic not destined for the VPN</string>
     <string name="profile_split_tunnelingv6_title">Block IPv6 traffic not destined for the VPN</string>
+    <string name="profile_import">Import VPN profile</string>
+    <string name="profile_import_failed">Failed to import VPN profile</string>
+    <string name="profile_import_failed_detail">Failed to import VPN profile: %1$s</string>
+    <string name="profile_import_failed_not_found">File not found</string>
+    <string name="profile_import_failed_host">Host unknown</string>
+    <string name="profile_import_failed_tls">TLS handshake failed</string>
+    <string name="profile_import_exists">This VPN profile already exists, its current settings will be replaced.</string>
+    <string name="profile_cert_import">Import certificate from VPN profile</string>
+    <string name="profile_cert_alias">Certificate for \"%1$s\"</string>
     <!-- Warnings/Notifications in the details view -->
     <string name="alert_text_no_input_gateway">A value is required to initiate the connection</string>
     <string name="alert_text_no_input_username">Wprowadź swoją nazwę użytkownika</string>

src/frontends/android/app/src/main/res/values-ru/strings.xml

@@ -45,8 +45,10 @@
 
     <!-- VPN profile details -->
     <string name="profile_edit_save">Сохранить</string>
+    <string name="profile_edit_import">Import</string>
     <string name="profile_edit_cancel">Отмена</string>
     <string name="profile_name_label">Название профиля (необязательный)</string>
+    <string name="profile_name_label_simple">Название профиля</string>
     <string name="profile_name_hint">Defaults to the configured server</string>
     <string name="profile_name_hint_gateway">Defaults to \"%1$s\"</string>
     <string name="profile_gateway_label">Сервер</string>
@@ -77,6 +79,15 @@
     <string name="profile_split_tunneling_label">Split tunneling</string>
     <string name="profile_split_tunnelingv4_title">Block IPv4 traffic not destined for the VPN</string>
     <string name="profile_split_tunnelingv6_title">Block IPv6 traffic not destined for the VPN</string>
+    <string name="profile_import">Import VPN profile</string>
+    <string name="profile_import_failed">Failed to import VPN profile</string>
+    <string name="profile_import_failed_detail">Failed to import VPN profile: %1$s</string>
+    <string name="profile_import_failed_not_found">File not found</string>
+    <string name="profile_import_failed_host">Host unknown</string>
+    <string name="profile_import_failed_tls">TLS handshake failed</string>
+    <string name="profile_import_exists">This VPN profile already exists, its current settings will be replaced.</string>
+    <string name="profile_cert_import">Import certificate from VPN profile</string>
+    <string name="profile_cert_alias">Certificate for \"%1$s\"</string>
     <!-- Warnings/Notifications in the details view -->
     <string name="alert_text_no_input_gateway">A value is required to initiate the connection</string>
     <string name="alert_text_no_input_username">Пожалуйста введите имя пользователя</string>

src/frontends/android/app/src/main/res/values-ua/strings.xml

@@ -46,8 +46,10 @@
 
     <!-- VPN profile details -->
     <string name="profile_edit_save">Зберегти</string>
+    <string name="profile_edit_import">Import</string>
     <string name="profile_edit_cancel">Відміна</string>
     <string name="profile_name_label">Назва профілю (необов\'язковий)</string>
+    <string name="profile_name_label_simple">Назва профілю</string>
     <string name="profile_name_hint">Defaults to the configured server</string>
     <string name="profile_name_hint_gateway">Defaults to \"%1$s\"</string>
     <string name="profile_gateway_label">Сервер</string>
@@ -78,6 +80,15 @@
     <string name="profile_split_tunneling_label">Split tunneling</string>
     <string name="profile_split_tunnelingv4_title">Block IPv4 traffic not destined for the VPN</string>
     <string name="profile_split_tunnelingv6_title">Block IPv6 traffic not destined for the VPN</string>
+    <string name="profile_import">Import VPN profile</string>
+    <string name="profile_import_failed">Failed to import VPN profile</string>
+    <string name="profile_import_failed_detail">Failed to import VPN profile: %1$s</string>
+    <string name="profile_import_failed_not_found">File not found</string>
+    <string name="profile_import_failed_host">Host unknown</string>
+    <string name="profile_import_failed_tls">TLS handshake failed</string>
+    <string name="profile_import_exists">This VPN profile already exists, its current settings will be replaced.</string>
+    <string name="profile_cert_import">Import certificate from VPN profile</string>
+    <string name="profile_cert_alias">Certificate for \"%1$s\"</string>
     <!-- Warnings/Notifications in the details view -->
     <string name="alert_text_no_input_gateway">A value is required to initiate the connection</string>
     <string name="alert_text_no_input_username">Введіть ім\'я користувача </string>

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

@@ -48,8 +48,10 @@
 
     <!-- VPN profile details -->
     <string name="profile_edit_save">Save</string>
+    <string name="profile_edit_import">Import</string>
     <string name="profile_edit_cancel">Cancel</string>
     <string name="profile_name_label">Profile name (optional)</string>
+    <string name="profile_name_label_simple">Profile name</string>
     <string name="profile_name_hint">Defaults to the configured server</string>
     <string name="profile_name_hint_gateway">Defaults to \"%1$s\"</string>
     <string name="profile_gateway_label">Server</string>
@@ -80,6 +82,15 @@
     <string name="profile_split_tunneling_label">Split tunneling</string>
     <string name="profile_split_tunnelingv4_title">Block IPv4 traffic not destined for the VPN</string>
     <string name="profile_split_tunnelingv6_title">Block IPv6 traffic not destined for the VPN</string>
+    <string name="profile_import">Import VPN profile</string>
+    <string name="profile_import_failed">Failed to import VPN profile</string>
+    <string name="profile_import_failed_detail">Failed to import VPN profile: %1$s</string>
+    <string name="profile_import_failed_not_found">File not found</string>
+    <string name="profile_import_failed_host">Host unknown</string>
+    <string name="profile_import_failed_tls">TLS handshake failed</string>
+    <string name="profile_import_exists">This VPN profile already exists, its current settings will be replaced.</string>
+    <string name="profile_cert_import">Import certificate from VPN profile</string>
+    <string name="profile_cert_alias">Certificate for \"%1$s\"</string>
     <!-- Warnings/Notifications in the details view -->
     <string name="alert_text_no_input_gateway">A value is required to initiate the connection</string>
     <string name="alert_text_no_input_username">Please enter your username </string>