src/com/owncloud/android/authentication/AuthenticatorActivity.java

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2012  Bartek Przybylski
   3  *   Copyright (C) 2012-2013 ownCloud Inc.
   4  *
   5  *   This program is free software: you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License version 2,
   7  *   as published by the Free Software Foundation.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18
  19 package com.owncloud.android.authentication;
  20
  21 import com.owncloud.android.AccountUtils;
  22 import com.owncloud.android.Log_OC;
  23 import com.owncloud.android.ui.dialog.SslValidatorDialog;
  24 import com.owncloud.android.ui.dialog.SslValidatorDialog.OnSslValidatorListener;
  25 import com.owncloud.android.utils.OwnCloudVersion;
  26 import com.owncloud.android.network.OwnCloudClientUtils;
  27 import com.owncloud.android.operations.OwnCloudServerCheckOperation;
  28 import com.owncloud.android.operations.ExistenceCheckOperation;
  29 import com.owncloud.android.operations.OAuth2GetAccessToken;
  30 import com.owncloud.android.operations.OnRemoteOperationListener;
  31 import com.owncloud.android.operations.RemoteOperation;
  32 import com.owncloud.android.operations.RemoteOperationResult;
  33 import com.owncloud.android.operations.RemoteOperationResult.ResultCode;
  34
  35 import android.accounts.Account;
  36 import android.accounts.AccountAuthenticatorActivity;
  37 import android.accounts.AccountManager;
  38 import android.app.AlertDialog;
  39 import android.app.Dialog;
  40 import android.app.ProgressDialog;
  41 import android.content.ContentResolver;
  42 import android.content.DialogInterface;
  43 import android.content.Intent;
  44 import android.content.SharedPreferences;
  45 import android.graphics.Rect;
  46 import android.graphics.drawable.Drawable;
  47 import android.net.Uri;
  48 import android.os.Bundle;
  49 import android.os.Handler;
  50 import android.preference.PreferenceManager;
  51 import android.text.Editable;
  52 import android.text.InputType;
  53 import android.text.TextWatcher;
  54 import android.view.KeyEvent;
  55 import android.view.MotionEvent;
  56 import android.view.View;
  57 import android.view.View.OnFocusChangeListener;
  58 import android.view.View.OnTouchListener;
  59 import android.view.Window;
  60 import android.view.inputmethod.EditorInfo;
  61 import android.widget.CheckBox;
  62 import android.widget.EditText;
  63 import android.widget.Button;
  64 import android.widget.TextView;
  65 import android.widget.Toast;
  66 import android.widget.TextView.OnEditorActionListener;
  67
  68 import com.owncloud.android.R;
  69
  70 import eu.alefzero.webdav.WebdavClient;
  71
  72 /**
  73  * This Activity is used to add an ownCloud account to the App
  74  *
  75  * @author Bartek Przybylski
  76  * @author David A. Velasco
  77  */
  78 public class AuthenticatorActivity extends AccountAuthenticatorActivity
  79         implements  OnRemoteOperationListener, OnSslValidatorListener, OnFocusChangeListener, OnEditorActionListener {
  80
  81     private static final String TAG = AuthenticatorActivity.class.getSimpleName();
  82
  83     public static final String EXTRA_ACCOUNT = "ACCOUNT";
  84     public static final String EXTRA_USER_NAME = "USER_NAME";
  85     public static final String EXTRA_HOST_NAME = "HOST_NAME";
  86     public static final String EXTRA_ACTION = "ACTION";
  87
  88     private static final String KEY_HOST_URL_TEXT = "HOST_URL_TEXT";
  89     private static final String KEY_OC_VERSION = "OC_VERSION";
  90     private static final String KEY_ACCOUNT = "ACCOUNT";
  91     private static final String KEY_SERVER_VALID = "SERVER_VALID";
  92     private static final String KEY_SERVER_CHECKED = "SERVER_CHECKED";
  93     private static final String KEY_SERVER_CHECK_IN_PROGRESS = "SERVER_CHECK_IN_PROGRESS";
  94     private static final String KEY_SERVER_STATUS_TEXT = "SERVER_STATUS_TEXT";
  95     private static final String KEY_SERVER_STATUS_ICON = "SERVER_STATUS_ICON";
  96     private static final String KEY_IS_SSL_CONN = "IS_SSL_CONN";
  97     private static final String KEY_PASSWORD_VISIBLE = "PASSWORD_VISIBLE";
  98     private static final String KEY_AUTH_STATUS_TEXT = "AUTH_STATUS_TEXT";
  99     private static final String KEY_AUTH_STATUS_ICON = "AUTH_STATUS_ICON";
 100
 101     private static final String OAUTH_MODE_ON = "on";
 102     private static final String OAUTH_MODE_OFF = "off";
 103     private static final String OAUTH_MODE_OPTIONAL = "optional";
 104
 105     private static final int DIALOG_LOGIN_PROGRESS = 0;
 106     private static final int DIALOG_SSL_VALIDATOR = 1;
 107     private static final int DIALOG_CERT_NOT_SAVED = 2;
 108     private static final int DIALOG_OAUTH2_LOGIN_PROGRESS = 3;
 109
 110     public static final byte ACTION_CREATE = 0;
 111     public static final byte ACTION_UPDATE_TOKEN = 1;
 112
 113
 114     private String mHostBaseUrl;
 115     private OwnCloudVersion mDiscoveredVersion;
 116
 117     private int mServerStatusText, mServerStatusIcon;
 118     private boolean mServerIsChecked, mServerIsValid, mIsSslConn;
 119     private int mAuthStatusText, mAuthStatusIcon;
 120
 121     private final Handler mHandler = new Handler();
 122     private Thread mOperationThread;
 123     private OwnCloudServerCheckOperation mOcServerChkOperation;
 124     private ExistenceCheckOperation mAuthCheckOperation;
 125     private RemoteOperationResult mLastSslUntrustedServerResult;
 126
 127     private Uri mNewCapturedUriFromOAuth2Redirection;
 128
 129     private AccountManager mAccountMgr;
 130     private boolean mJustCreated;
 131     private byte mAction;
 132     private Account mAccount;
 133
 134     private EditText mHostUrlInput;
 135     private EditText mUsernameInput;
 136     private EditText mPasswordInput;
 137     private CheckBox mOAuth2Check;
 138     private String mOAuthAccessToken;
 139     private View mOkButton;
 140     private TextView mAuthStatusLayout;
 141
 142     private TextView mOAuthAuthEndpointText;
 143     private TextView mOAuthTokenEndpointText;
 144
 145
 146     /**
 147      * {@inheritDoc}
 148      *
 149      * IMPORTANT ENTRY POINT 1: activity is shown to the user
 150      */
 151     @Override
 152     protected void onCreate(Bundle savedInstanceState) {
 153         super.onCreate(savedInstanceState);
 154         getWindow().requestFeature(Window.FEATURE_NO_TITLE);
 155
 156         /// set view and get references to view elements
 157         setContentView(R.layout.account_setup);
 158         mHostUrlInput = (EditText) findViewById(R.id.hostUrlInput);
 159         mUsernameInput = (EditText) findViewById(R.id.account_username);
 160         mPasswordInput = (EditText) findViewById(R.id.account_password);
 161         mOAuthAuthEndpointText = (TextView)findViewById(R.id.oAuthEntryPoint_1);
 162         mOAuthTokenEndpointText = (TextView)findViewById(R.id.oAuthEntryPoint_2);
 163         mOAuth2Check = (CheckBox) findViewById(R.id.oauth_onOff_check);
 164         mOkButton = findViewById(R.id.buttonOK);
 165         mAuthStatusLayout = (TextView) findViewById(R.id.auth_status_text);
 166
 167         /// complete label for 'register account' button
 168         Button b = (Button) findViewById(R.id.account_register);
 169         if (b != null) {
 170             b.setText(String.format(getString(R.string.auth_register), getString(R.string.app_name)));
 171         }
 172
 173         /// initialization
 174         mAccountMgr = AccountManager.get(this);
 175         mNewCapturedUriFromOAuth2Redirection = null;
 176         mAction = getIntent().getByteExtra(EXTRA_ACTION, ACTION_CREATE);
 177         mAccount = null;
 178         mHostBaseUrl = "";
 179
 180         if (savedInstanceState == null) {
 181             /// connection state and info
 182             mServerStatusText = mServerStatusIcon = 0;
 183             mServerIsValid = false;
 184             mServerIsChecked = false;
 185             mIsSslConn = false;
 186             mAuthStatusText = mAuthStatusIcon = 0;
 187
 188             /// retrieve extras from intent
 189             String tokenType = getIntent().getExtras().getString(AccountAuthenticator.KEY_AUTH_TOKEN_TYPE);
 190             boolean oAuthRequired = AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN.equals(tokenType) || OAUTH_MODE_ON.equals(getString(R.string.oauth2_mode));
 191
 192             mAccount = getIntent().getExtras().getParcelable(EXTRA_ACCOUNT);
 193             if (mAccount != null) {
 194                 String ocVersion = mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_OC_VERSION);
 195                 if (ocVersion != null) {
 196                     mDiscoveredVersion = new OwnCloudVersion(ocVersion);
 197                 }
 198                 mHostBaseUrl = normalizeUrl(mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_OC_BASE_URL));
 199                 mHostUrlInput.setText(mHostBaseUrl);
 200                 String userName = mAccount.name.substring(0, mAccount.name.lastIndexOf('@'));
 201                 mUsernameInput.setText(userName);
 202                 oAuthRequired = (mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_SUPPORTS_OAUTH2) != null);
 203             }
 204             mOAuth2Check.setChecked(oAuthRequired);
 205             changeViewByOAuth2Check(oAuthRequired);
 206
 207
 208         } else {
 209             /// connection state and info
 210             mServerIsValid = savedInstanceState.getBoolean(KEY_SERVER_VALID);
 211             mServerIsChecked = savedInstanceState.getBoolean(KEY_SERVER_CHECKED);
 212             mServerStatusText = savedInstanceState.getInt(KEY_SERVER_STATUS_TEXT);
 213             mServerStatusIcon = savedInstanceState.getInt(KEY_SERVER_STATUS_ICON);
 214             mIsSslConn = savedInstanceState.getBoolean(KEY_IS_SSL_CONN);
 215             mAuthStatusText = savedInstanceState.getInt(KEY_AUTH_STATUS_TEXT);
 216             mAuthStatusIcon = savedInstanceState.getInt(KEY_AUTH_STATUS_ICON);
 217             if (savedInstanceState.getBoolean(KEY_PASSWORD_VISIBLE, false)) {
 218                 showPassword();
 219             }
 220
 221             /// server data
 222             String ocVersion = savedInstanceState.getString(KEY_OC_VERSION);
 223             if (ocVersion != null) {
 224                 mDiscoveredVersion = new OwnCloudVersion(ocVersion);
 225             }
 226             mHostBaseUrl = savedInstanceState.getString(KEY_HOST_URL_TEXT);
 227
 228             // account data, if updating
 229             mAccount = savedInstanceState.getParcelable(KEY_ACCOUNT);
 230
 231             // check if server check was interrupted by a configuration change
 232             if (savedInstanceState.getBoolean(KEY_SERVER_CHECK_IN_PROGRESS, false)) {
 233                 checkOcServer();
 234             }
 235
 236         }
 237
 238         showServerStatus();
 239         showAuthStatus();
 240         if (mServerIsChecked && !mServerIsValid) showRefreshButton();
 241         mOkButton.setEnabled(mServerIsValid); // state not automatically recovered in configuration changes
 242
 243         if (!OAUTH_MODE_OPTIONAL.equals(getString(R.string.oauth2_mode))) {
 244             mOAuth2Check.setVisibility(View.GONE);
 245         }
 246
 247         if (mAction == ACTION_UPDATE_TOKEN) {
 248             /// lock things that should not change
 249             mHostUrlInput.setEnabled(false);
 250             mUsernameInput.setEnabled(false);
 251             mOAuth2Check.setVisibility(View.GONE);
 252             if (!mServerIsValid && mOcServerChkOperation == null) {
 253                 checkOcServer();
 254             }
 255         }
 256
 257         mPasswordInput.setText("");     // clean password to avoid social hacking (disadvantage: password in removed if the device is turned aside)
 258         mJustCreated = true;
 259
 260         /// bind view elements to listeners
 261         mHostUrlInput.setOnFocusChangeListener(this);
 262         mHostUrlInput.setOnTouchListener(new RightDrawableOnTouchListener() {
 263             @Override
 264             public boolean onDrawableTouch(final MotionEvent event) {
 265                 if (event.getAction() == MotionEvent.ACTION_UP) {
 266                     AuthenticatorActivity.this.onRefreshClick();
 267                 }
 268                 return true;
 269             }
 270         });
 271         mHostUrlInput.addTextChangedListener(new TextWatcher() {
 272
 273             @Override
 274             public void afterTextChanged(Editable s) {
 275                 if (!mHostBaseUrl.equals(normalizeUrl(mHostUrlInput.getText().toString()))) {
 276                     mOkButton.setEnabled(false);
 277                 }
 278             }
 279
 280             @Override
 281             public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
 282
 283             @Override
 284             public void onTextChanged(CharSequence s, int start, int before, int count) {}
 285
 286         });
 287         mPasswordInput.setOnFocusChangeListener(this);
 288         mPasswordInput.setImeOptions(EditorInfo.IME_ACTION_DONE);
 289         mPasswordInput.setOnEditorActionListener(this);
 290         mPasswordInput.setOnTouchListener(new RightDrawableOnTouchListener() {
 291             @Override
 292             public boolean onDrawableTouch(final MotionEvent event) {
 293                 if (event.getAction() == MotionEvent.ACTION_UP) {
 294                     AuthenticatorActivity.this.onViewPasswordClick();
 295                 }
 296                 return true;
 297             }
 298         });
 299     }
 300
 301     /**
 302      * Saves relevant state before {@link #onPause()}
 303      *
 304      * Do NOT save {@link #mNewCapturedUriFromOAuth2Redirection}; it keeps a temporal flag, intended to defer the
 305      * processing of the redirection caught in {@link #onNewIntent(Intent)} until {@link #onResume()}
 306      *
 307      * See {@link #loadSavedInstanceState(Bundle)}
 308      */
 309     @Override
 310     protected void onSaveInstanceState(Bundle outState) {
 311         super.onSaveInstanceState(outState);
 312
 313         /// connection state and info
 314         outState.putInt(KEY_SERVER_STATUS_TEXT, mServerStatusText);
 315         outState.putInt(KEY_SERVER_STATUS_ICON, mServerStatusIcon);
 316         outState.putBoolean(KEY_SERVER_VALID, mServerIsValid);
 317         outState.putBoolean(KEY_SERVER_CHECKED, mServerIsChecked);
 318         outState.putBoolean(KEY_SERVER_CHECK_IN_PROGRESS, (!mServerIsValid && mOcServerChkOperation != null));
 319         outState.putBoolean(KEY_IS_SSL_CONN, mIsSslConn);
 320         outState.putBoolean(KEY_PASSWORD_VISIBLE, isPasswordVisible());
 321         outState.putInt(KEY_AUTH_STATUS_ICON, mAuthStatusIcon);
 322         outState.putInt(KEY_AUTH_STATUS_TEXT, mAuthStatusText);
 323
 324         /// server data
 325         if (mDiscoveredVersion != null) {
 326             outState.putString(KEY_OC_VERSION, mDiscoveredVersion.toString());
 327         }
 328         outState.putString(KEY_HOST_URL_TEXT, mHostBaseUrl);
 329
 330         /// account data, if updating
 331         if (mAccount != null) {
 332             outState.putParcelable(KEY_ACCOUNT, mAccount);
 333         }
 334
 335     }
 336
 337
 338     /**
 339      * The redirection triggered by the OAuth authentication server as response to the GET AUTHORIZATION request
 340      * is caught here.
 341      *
 342      * To make this possible, this activity needs to be qualified with android:launchMode = "singleTask" in the
 343      * AndroidManifest.xml file.
 344      */
 345     @Override
 346     protected void onNewIntent (Intent intent) {
 347         Log_OC.d(TAG, "onNewIntent()");
 348         Uri data = intent.getData();
 349         if (data != null && data.toString().startsWith(getString(R.string.oauth2_redirect_uri))) {
 350             mNewCapturedUriFromOAuth2Redirection = data;
 351         }
 352     }
 353
 354
 355     /**
 356      * The redirection triggered by the OAuth authentication server as response to the GET AUTHORIZATION, and
 357      * deferred in {@link #onNewIntent(Intent)}, is processed here.
 358      */
 359     @Override
 360     protected void onResume() {
 361         super.onResume();
 362         // the state of mOAuth2Check is automatically recovered between configuration changes, but not before onCreate() finishes; so keep the next lines here
 363         changeViewByOAuth2Check(mOAuth2Check.isChecked());
 364         if (mAction == ACTION_UPDATE_TOKEN && mJustCreated) {
 365             if (mOAuth2Check.isChecked())
 366                 Toast.makeText(this, R.string.auth_expired_oauth_token_toast, Toast.LENGTH_LONG).show();
 367             else
 368                 Toast.makeText(this, R.string.auth_expired_basic_auth_toast, Toast.LENGTH_LONG).show();
 369         }
 370
 371         if (mNewCapturedUriFromOAuth2Redirection != null) {
 372             getOAuth2AccessTokenFromCapturedRedirection();
 373         }
 374
 375         mJustCreated = false;
 376     }
 377
 378
 379     /**
 380      * Parses the redirection with the response to the GET AUTHORIZATION request to the
 381      * oAuth server and requests for the access token (GET ACCESS TOKEN)
 382      */
 383     private void getOAuth2AccessTokenFromCapturedRedirection() {
 384         /// Parse data from OAuth redirection
 385         String queryParameters = mNewCapturedUriFromOAuth2Redirection.getQuery();
 386         mNewCapturedUriFromOAuth2Redirection = null;
 387
 388         /// Showing the dialog with instructions for the user.
 389         showDialog(DIALOG_OAUTH2_LOGIN_PROGRESS);
 390
 391         /// GET ACCESS TOKEN to the oAuth server
 392         RemoteOperation operation = new OAuth2GetAccessToken(   getString(R.string.oauth2_client_id),
 393                                                                 getString(R.string.oauth2_redirect_uri),
 394                                                                 getString(R.string.oauth2_grant_type),
 395                                                                 queryParameters);
 396         //WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(getString(R.string.oauth2_url_endpoint_access)), getApplicationContext());
 397         WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mOAuthTokenEndpointText.getText().toString().trim()), getApplicationContext());
 398         operation.execute(client, this, mHandler);
 399     }
 400
 401
 402
 403     /**
 404      * Handles the change of focus on the text inputs for the server URL and the password
 405      */
 406     public void onFocusChange(View view, boolean hasFocus) {
 407         if (view.getId() == R.id.hostUrlInput && !hasFocus) {
 408             onUrlInputFocusLost((TextView) view);
 409
 410         } else if (view.getId() == R.id.account_password) {
 411             onPasswordFocusChanged((TextView) view, hasFocus);
 412         }
 413     }
 414
 415
 416     /**
 417      * Handles changes in focus on the text input for the server URL.
 418      *
 419      * IMPORTANT ENTRY POINT 2: When (!hasFocus), user wrote the server URL and changed to
 420      * other field. The operation to check the existence of the server in the entered URL is
 421      * started.
 422      *
 423      * When hasFocus:    user 'comes back' to write again the server URL.
 424      *
 425      * @param hostInput     TextView with the URL input field receiving the change of focus.
 426      */
 427     private void onUrlInputFocusLost(TextView hostInput) {
 428         if (!mHostBaseUrl.equals(normalizeUrl(mHostUrlInput.getText().toString()))) {
 429             checkOcServer();
 430         } else {
 431             mOkButton.setEnabled(mServerIsValid);
 432         }
 433     }
 434
 435
 436     private void checkOcServer() {
 437         String uri = mHostUrlInput.getText().toString().trim();
 438         mServerIsValid = false;
 439         mServerIsChecked = false;
 440         mOkButton.setEnabled(false);
 441         mDiscoveredVersion = null;
 442         hideRefreshButton();
 443         if (uri.length() != 0) {
 444             mServerStatusText = R.string.auth_testing_connection;
 445             mServerStatusIcon = R.drawable.progress_small;
 446             showServerStatus();
 447             mOcServerChkOperation = new  OwnCloudServerCheckOperation(uri, this);
 448             WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(uri), this);
 449             mOperationThread = mOcServerChkOperation.execute(client, this, mHandler);
 450         } else {
 451             mServerStatusText = 0;
 452             mServerStatusIcon = 0;
 453             showServerStatus();
 454         }
 455     }
 456
 457
 458     /**
 459      * Handles changes in focus on the text input for the password (basic authorization).
 460      *
 461      * When (hasFocus), the button to toggle password visibility is shown.
 462      *
 463      * When (!hasFocus), the button is made invisible and the password is hidden.
 464      *
 465      * @param passwordInput    TextView with the password input field receiving the change of focus.
 466      * @param hasFocus          'True' if focus is received, 'false' if is lost
 467      */
 468     private void onPasswordFocusChanged(TextView passwordInput, boolean hasFocus) {
 469         if (hasFocus) {
 470             showViewPasswordButton();
 471         } else {
 472             hidePassword();
 473             hidePasswordButton();
 474         }
 475     }
 476
 477
 478     private void showViewPasswordButton() {
 479         //int drawable = android.R.drawable.ic_menu_view;
 480         int drawable = R.drawable.ic_view;
 481         if (isPasswordVisible()) {
 482             //drawable = android.R.drawable.ic_secure;
 483             drawable = R.drawable.ic_hide;
 484         }
 485         mPasswordInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, drawable, 0);
 486     }
 487
 488     private boolean isPasswordVisible() {
 489         return ((mPasswordInput.getInputType() & InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD) == InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
 490     }
 491
 492     private void hidePasswordButton() {
 493         mPasswordInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
 494     }
 495
 496     private void showPassword() {
 497         mPasswordInput.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
 498         showViewPasswordButton();
 499     }
 500
 501     private void hidePassword() {
 502         mPasswordInput.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
 503         showViewPasswordButton();
 504     }
 505
 506
 507     /**
 508      * Cancels the authenticator activity
 509      *
 510      * IMPORTANT ENTRY POINT 3: Never underestimate the importance of cancellation
 511      *
 512      * This method is bound in the layout/acceoun_setup.xml resource file.
 513      *
 514      * @param view      Cancel button
 515      */
 516     public void onCancelClick(View view) {
 517         setResult(RESULT_CANCELED);     // TODO review how is this related to AccountAuthenticator (debugging)
 518         finish();
 519     }
 520
 521
 522
 523     /**
 524      * Checks the credentials of the user in the root of the ownCloud server
 525      * before creating a new local account.
 526      *
 527      * For basic authorization, a check of existence of the root folder is
 528      * performed.
 529      *
 530      * For OAuth, starts the flow to get an access token; the credentials test
 531      * is postponed until it is available.
 532      *
 533      * IMPORTANT ENTRY POINT 4
 534      *
 535      * @param view      OK button
 536      */
 537     public void onOkClick(View view) {
 538         // this check should be unnecessary
 539         if (mDiscoveredVersion == null || !mDiscoveredVersion.isVersionValid()  || mHostBaseUrl == null || mHostBaseUrl.length() == 0) {
 540             mServerStatusIcon = R.drawable.common_error;
 541             mServerStatusText = R.string.auth_wtf_reenter_URL;
 542             showServerStatus();
 543             mOkButton.setEnabled(false);
 544             Log_OC.wtf(TAG,  "The user was allowed to click 'connect' to an unchecked server!!");
 545             return;
 546         }
 547
 548         if (mOAuth2Check.isChecked()) {
 549             startOauthorization();
 550
 551         } else {
 552             checkBasicAuthorization();
 553         }
 554     }
 555
 556
 557     /**
 558      * Tests the credentials entered by the user performing a check of existence on
 559      * the root folder of the ownCloud server.
 560      */
 561     private void checkBasicAuthorization() {
 562         /// get the path to the root folder through WebDAV from the version server
 563         String webdav_path = AccountUtils.getWebdavPath(mDiscoveredVersion, false);
 564
 565         /// get basic credentials entered by user
 566         String username = mUsernameInput.getText().toString();
 567         String password = mPasswordInput.getText().toString();
 568
 569         /// be gentle with the user
 570         showDialog(DIALOG_LOGIN_PROGRESS);
 571
 572         /// test credentials accessing the root folder
 573         mAuthCheckOperation = new  ExistenceCheckOperation("", this, false);
 574         WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mHostBaseUrl + webdav_path), this);
 575         client.setBasicCredentials(username, password);
 576         mOperationThread = mAuthCheckOperation.execute(client, this, mHandler);
 577     }
 578
 579
 580     /**
 581      * Starts the OAuth 'grant type' flow to get an access token, with
 582      * a GET AUTHORIZATION request to the BUILT-IN authorization server.
 583      */
 584     private void startOauthorization() {
 585         // be gentle with the user
 586         mAuthStatusIcon = R.drawable.progress_small;
 587         mAuthStatusText = R.string.oauth_login_connection;
 588         showAuthStatus();
 589
 590         // GET AUTHORIZATION request
 591         //Uri uri = Uri.parse(getString(R.string.oauth2_url_endpoint_auth));
 592         Uri uri = Uri.parse(mOAuthAuthEndpointText.getText().toString().trim());
 593         Uri.Builder uriBuilder = uri.buildUpon();
 594         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_RESPONSE_TYPE, getString(R.string.oauth2_response_type));
 595         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_REDIRECT_URI, getString(R.string.oauth2_redirect_uri));
 596         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_CLIENT_ID, getString(R.string.oauth2_client_id));
 597         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_SCOPE, getString(R.string.oauth2_scope));
 598         //uriBuilder.appendQueryParameter(OAuth2Constants.KEY_STATE, whateverwewant);
 599         uri = uriBuilder.build();
 600         Log_OC.d(TAG, "Starting browser to view " + uri.toString());
 601         Intent i = new Intent(Intent.ACTION_VIEW, uri);
 602         startActivity(i);
 603     }
 604
 605
 606     /**
 607      * Callback method invoked when a RemoteOperation executed by this Activity finishes.
 608      *
 609      * Dispatches the operation flow to the right method.
 610      */
 611     @Override
 612     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 613
 614         if (operation instanceof OwnCloudServerCheckOperation) {
 615             onOcServerCheckFinish((OwnCloudServerCheckOperation) operation, result);
 616
 617         } else if (operation instanceof OAuth2GetAccessToken) {
 618             onGetOAuthAccessTokenFinish((OAuth2GetAccessToken)operation, result);
 619
 620         } else if (operation instanceof ExistenceCheckOperation)  {
 621             onAuthorizationCheckFinish((ExistenceCheckOperation)operation, result);
 622
 623         }
 624     }
 625
 626
 627     /**
 628      * Processes the result of the server check performed when the user finishes the enter of the
 629      * server URL.
 630      *
 631      * @param operation     Server check performed.
 632      * @param result        Result of the check.
 633      */
 634     private void onOcServerCheckFinish(OwnCloudServerCheckOperation operation, RemoteOperationResult result) {
 635         if (operation.equals(mOcServerChkOperation)) {
 636             /// save result state
 637             mServerIsChecked = true;
 638             mServerIsValid = result.isSuccess();
 639             mIsSslConn = (result.getCode() == ResultCode.OK_SSL);
 640             mOcServerChkOperation = null;
 641
 642             /// update status icon and text
 643             if (mServerIsValid) {
 644                 hideRefreshButton();
 645             } else {
 646                 showRefreshButton();
 647             }
 648             updateServerStatusIconAndText(result);
 649             showServerStatus();
 650
 651             /// very special case (TODO: move to a common place for all the remote operations)
 652             if (result.getCode() == ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED) {
 653                 mLastSslUntrustedServerResult = result;
 654                 showDialog(DIALOG_SSL_VALIDATOR);
 655             }
 656
 657             /// retrieve discovered version and normalize server URL
 658             mDiscoveredVersion = operation.getDiscoveredVersion();
 659             mHostBaseUrl = normalizeUrl(mHostUrlInput.getText().toString());
 660
 661             /// allow or not the user try to access the server
 662             mOkButton.setEnabled(mServerIsValid);
 663
 664         }   // else nothing ; only the last check operation is considered;
 665             // multiple can be triggered if the user amends a URL before a previous check can be triggered
 666     }
 667
 668
 669     private String normalizeUrl(String url) {
 670         if (url != null && url.length() > 0) {
 671             url = url.trim();
 672             if (!url.toLowerCase().startsWith("http://") &&
 673                     !url.toLowerCase().startsWith("https://")) {
 674                 if (mIsSslConn) {
 675                     url = "https://" + url;
 676                 } else {
 677                     url = "http://" + url;
 678                 }
 679
 680             }
 681             if (url.endsWith("/")) {
 682                 url = url.substring(0, url.length() - 1);
 683             }
 684         }
 685         return (url != null ? url : "");
 686     }
 687
 688     /**
 689      * Chooses the right icon and text to show to the user for the received operation result.
 690      *
 691      * @param result    Result of a remote operation performed in this activity
 692      */
 693     private void updateServerStatusIconAndText(RemoteOperationResult result) {
 694         mServerStatusIcon = R.drawable.common_error;    // the most common case in the switch below
 695
 696         switch (result.getCode()) {
 697         case OK_SSL:
 698             mServerStatusIcon = android.R.drawable.ic_secure;
 699             mServerStatusText = R.string.auth_secure_connection;
 700             break;
 701
 702         case OK_NO_SSL:
 703         case OK:
 704             if (mHostUrlInput.getText().toString().trim().toLowerCase().startsWith("http://") ) {
 705                 mServerStatusText = R.string.auth_connection_established;
 706                 mServerStatusIcon = R.drawable.ic_ok;
 707             } else {
 708                 mServerStatusText = R.string.auth_nossl_plain_ok_title;
 709                 mServerStatusIcon = android.R.drawable.ic_partial_secure;
 710             }
 711             break;
 712
 713         case NO_NETWORK_CONNECTION:
 714             mServerStatusIcon = R.drawable.no_network;
 715             mServerStatusText = R.string.auth_no_net_conn_title;
 716             break;
 717
 718         case SSL_RECOVERABLE_PEER_UNVERIFIED:
 719             mServerStatusText = R.string.auth_ssl_unverified_server_title;
 720             break;
 721         case BAD_OC_VERSION:
 722             mServerStatusText = R.string.auth_bad_oc_version_title;
 723             break;
 724         case WRONG_CONNECTION:
 725             mServerStatusText = R.string.auth_wrong_connection_title;
 726             break;
 727         case TIMEOUT:
 728             mServerStatusText = R.string.auth_timeout_title;
 729             break;
 730         case INCORRECT_ADDRESS:
 731             mServerStatusText = R.string.auth_incorrect_address_title;
 732             break;
 733         case SSL_ERROR:
 734             mServerStatusText = R.string.auth_ssl_general_error_title;
 735             break;
 736         case UNAUTHORIZED:
 737             mServerStatusText = R.string.auth_unauthorized;
 738             break;
 739         case HOST_NOT_AVAILABLE:
 740             mServerStatusText = R.string.auth_unknown_host_title;
 741             break;
 742         case INSTANCE_NOT_CONFIGURED:
 743             mServerStatusText = R.string.auth_not_configured_title;
 744             break;
 745         case FILE_NOT_FOUND:
 746             mServerStatusText = R.string.auth_incorrect_path_title;
 747             break;
 748         case OAUTH2_ERROR:
 749             mServerStatusText = R.string.auth_oauth_error;
 750             break;
 751         case OAUTH2_ERROR_ACCESS_DENIED:
 752             mServerStatusText = R.string.auth_oauth_error_access_denied;
 753             break;
 754         case UNHANDLED_HTTP_CODE:
 755         case UNKNOWN_ERROR:
 756             mServerStatusText = R.string.auth_unknown_error_title;
 757             break;
 758         default:
 759             mServerStatusText = 0;
 760             mServerStatusIcon = 0;
 761         }
 762     }
 763
 764
 765     /**
 766      * Chooses the right icon and text to show to the user for the received operation result.
 767      *
 768      * @param result    Result of a remote operation performed in this activity
 769      */
 770     private void updateAuthStatusIconAndText(RemoteOperationResult result) {
 771         mAuthStatusIcon = R.drawable.common_error;    // the most common case in the switch below
 772
 773         switch (result.getCode()) {
 774         case OK_SSL:
 775             mAuthStatusIcon = android.R.drawable.ic_secure;
 776             mAuthStatusText = R.string.auth_secure_connection;
 777             break;
 778
 779         case OK_NO_SSL:
 780         case OK:
 781             if (mHostUrlInput.getText().toString().trim().toLowerCase().startsWith("http://") ) {
 782                 mAuthStatusText = R.string.auth_connection_established;
 783                 mAuthStatusIcon = R.drawable.ic_ok;
 784             } else {
 785                 mAuthStatusText = R.string.auth_nossl_plain_ok_title;
 786                 mAuthStatusIcon = android.R.drawable.ic_partial_secure;
 787             }
 788             break;
 789
 790         case NO_NETWORK_CONNECTION:
 791             mAuthStatusIcon = R.drawable.no_network;
 792             mAuthStatusText = R.string.auth_no_net_conn_title;
 793             break;
 794
 795         case SSL_RECOVERABLE_PEER_UNVERIFIED:
 796             mAuthStatusText = R.string.auth_ssl_unverified_server_title;
 797             break;
 798         case BAD_OC_VERSION:
 799             mAuthStatusText = R.string.auth_bad_oc_version_title;
 800             break;
 801         case WRONG_CONNECTION:
 802             mAuthStatusText = R.string.auth_wrong_connection_title;
 803             break;
 804         case TIMEOUT:
 805             mAuthStatusText = R.string.auth_timeout_title;
 806             break;
 807         case INCORRECT_ADDRESS:
 808             mAuthStatusText = R.string.auth_incorrect_address_title;
 809             break;
 810         case SSL_ERROR:
 811             mAuthStatusText = R.string.auth_ssl_general_error_title;
 812             break;
 813         case UNAUTHORIZED:
 814             mAuthStatusText = R.string.auth_unauthorized;
 815             break;
 816         case HOST_NOT_AVAILABLE:
 817             mAuthStatusText = R.string.auth_unknown_host_title;
 818             break;
 819         case INSTANCE_NOT_CONFIGURED:
 820             mAuthStatusText = R.string.auth_not_configured_title;
 821             break;
 822         case FILE_NOT_FOUND:
 823             mAuthStatusText = R.string.auth_incorrect_path_title;
 824             break;
 825         case OAUTH2_ERROR:
 826             mAuthStatusText = R.string.auth_oauth_error;
 827             break;
 828         case OAUTH2_ERROR_ACCESS_DENIED:
 829             mAuthStatusText = R.string.auth_oauth_error_access_denied;
 830             break;
 831         case UNHANDLED_HTTP_CODE:
 832         case UNKNOWN_ERROR:
 833             mAuthStatusText = R.string.auth_unknown_error_title;
 834             break;
 835         default:
 836             mAuthStatusText = 0;
 837             mAuthStatusIcon = 0;
 838         }
 839     }
 840
 841
 842     /**
 843      * Processes the result of the request for and access token send
 844      * to an OAuth authorization server.
 845      *
 846      * @param operation     Operation performed requesting the access token.
 847      * @param result        Result of the operation.
 848      */
 849     private void onGetOAuthAccessTokenFinish(OAuth2GetAccessToken operation, RemoteOperationResult result) {
 850         try {
 851             dismissDialog(DIALOG_OAUTH2_LOGIN_PROGRESS);
 852         } catch (IllegalArgumentException e) {
 853             // NOTHING TO DO ; can't find out what situation that leads to the exception in this code, but user logs signal that it happens
 854         }
 855
 856         String webdav_path = AccountUtils.getWebdavPath(mDiscoveredVersion, true);
 857         if (result.isSuccess() && webdav_path != null) {
 858             /// be gentle with the user
 859             showDialog(DIALOG_LOGIN_PROGRESS);
 860
 861             /// time to test the retrieved access token on the ownCloud server
 862             mOAuthAccessToken = ((OAuth2GetAccessToken)operation).getResultTokenMap().get(OAuth2Constants.KEY_ACCESS_TOKEN);
 863             Log_OC.d(TAG, "Got ACCESS TOKEN: " + mOAuthAccessToken);
 864             mAuthCheckOperation = new ExistenceCheckOperation("", this, false);
 865             WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mHostBaseUrl + webdav_path), this);
 866             client.setBearerCredentials(mOAuthAccessToken);
 867             mAuthCheckOperation.execute(client, this, mHandler);
 868
 869         } else {
 870             updateAuthStatusIconAndText(result);
 871             showAuthStatus();
 872             Log_OC.d(TAG, "Access failed: " + result.getLogMessage());
 873         }
 874     }
 875
 876
 877     /**
 878      * Processes the result of the access check performed to try the user credentials.
 879      *
 880      * Creates a new account through the AccountManager.
 881      *
 882      * @param operation     Access check performed.
 883      * @param result        Result of the operation.
 884      */
 885     private void onAuthorizationCheckFinish(ExistenceCheckOperation operation, RemoteOperationResult result) {
 886         try {
 887             dismissDialog(DIALOG_LOGIN_PROGRESS);
 888         } catch (IllegalArgumentException e) {
 889             // NOTHING TO DO ; can't find out what situation that leads to the exception in this code, but user logs signal that it happens
 890         }
 891
 892         if (result.isSuccess()) {
 893             Log_OC.d(TAG, "Successful access - time to save the account");
 894
 895             if (mAction == ACTION_CREATE) {
 896                 createAccount();
 897
 898             } else {
 899                 updateToken();
 900             }
 901
 902             finish();
 903
 904         } else {
 905             updateAuthStatusIconAndText(result);
 906             showAuthStatus();
 907             Log_OC.d(TAG, "Access failed: " + result.getLogMessage());
 908         }
 909     }
 910
 911
 912     /**
 913      * Sets the proper response to get that the Account Authenticator that started this activity saves
 914      * a new authorization token for mAccount.
 915      */
 916     private void updateToken() {
 917         Bundle response = new Bundle();
 918         response.putString(AccountManager.KEY_ACCOUNT_NAME, mAccount.name);
 919         response.putString(AccountManager.KEY_ACCOUNT_TYPE, mAccount.type);
 920         boolean isOAuth = mOAuth2Check.isChecked();
 921         if (isOAuth) {
 922             response.putString(AccountManager.KEY_AUTHTOKEN, mOAuthAccessToken);
 923             // the next line is necessary; by now, notifications are calling directly to the AuthenticatorActivity to update, without AccountManager intervention
 924             mAccountMgr.setAuthToken(mAccount, AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN, mOAuthAccessToken);
 925         } else {
 926             response.putString(AccountManager.KEY_AUTHTOKEN, mPasswordInput.getText().toString());
 927             mAccountMgr.setPassword(mAccount, mPasswordInput.getText().toString());
 928         }
 929         setAccountAuthenticatorResult(response);
 930     }
 931
 932
 933     /**
 934      * Creates a new account through the Account Authenticator that started this activity.
 935      *
 936      * This makes the account permanent.
 937      *
 938      * TODO Decide how to name the OAuth accounts
 939      */
 940     private void createAccount() {
 941         /// create and save new ownCloud account
 942         boolean isOAuth = mOAuth2Check.isChecked();
 943
 944         Uri uri = Uri.parse(mHostBaseUrl);
 945         String username = mUsernameInput.getText().toString().trim();
 946         if (isOAuth) {
 947             username = "OAuth_user" + (new java.util.Random(System.currentTimeMillis())).nextLong();
 948         }
 949         String accountName = username + "@" + uri.getHost();
 950         if (uri.getPort() >= 0) {
 951             accountName += ":" + uri.getPort();
 952         }
 953         mAccount = new Account(accountName, AccountAuthenticator.ACCOUNT_TYPE);
 954         if (isOAuth) {
 955             mAccountMgr.addAccountExplicitly(mAccount, "", null);  // with our implementation, the password is never input in the app
 956         } else {
 957             mAccountMgr.addAccountExplicitly(mAccount, mPasswordInput.getText().toString(), null);
 958         }
 959
 960         /// add the new account as default in preferences, if there is none already
 961         Account defaultAccount = AccountUtils.getCurrentOwnCloudAccount(this);
 962         if (defaultAccount == null) {
 963             SharedPreferences.Editor editor = PreferenceManager
 964                     .getDefaultSharedPreferences(this).edit();
 965             editor.putString("select_oc_account", accountName);
 966             editor.commit();
 967         }
 968
 969         /// prepare result to return to the Authenticator
 970         //  TODO check again what the Authenticator makes with it; probably has the same effect as addAccountExplicitly, but it's not well done
 971         final Intent intent = new Intent();
 972         intent.putExtra(AccountManager.KEY_ACCOUNT_TYPE,    AccountAuthenticator.ACCOUNT_TYPE);
 973         intent.putExtra(AccountManager.KEY_ACCOUNT_NAME,    mAccount.name);
 974         if (!isOAuth)
 975             intent.putExtra(AccountManager.KEY_AUTHTOKEN,   AccountAuthenticator.ACCOUNT_TYPE); // TODO check this; not sure it's right; maybe
 976         intent.putExtra(AccountManager.KEY_USERDATA,        username);
 977         if (isOAuth) {
 978             mAccountMgr.setAuthToken(mAccount, AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN, mOAuthAccessToken);
 979         }
 980         /// add user data to the new account; TODO probably can be done in the last parameter addAccountExplicitly, or in KEY_USERDATA
 981         mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_OC_VERSION,    mDiscoveredVersion.toString());
 982         mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_OC_BASE_URL,   mHostBaseUrl);
 983         if (isOAuth)
 984             mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_SUPPORTS_OAUTH2, "TRUE");  // TODO this flag should be unnecessary
 985
 986         setAccountAuthenticatorResult(intent.getExtras());
 987         setResult(RESULT_OK, intent);
 988
 989         /// immediately request for the synchronization of the new account
 990         Bundle bundle = new Bundle();
 991         bundle.putBoolean(ContentResolver.SYNC_EXTRAS_MANUAL, true);
 992         ContentResolver.requestSync(mAccount, AccountAuthenticator.AUTHORITY, bundle);
 993     }
 994
 995
 996     /**
 997      * {@inheritDoc}
 998      *
 999      * Necessary to update the contents of the SSL Dialog
1000      *
1001      * TODO move to some common place for all possible untrusted SSL failures
1002      */
1003     @Override
1004     protected void onPrepareDialog(int id, Dialog dialog, Bundle args) {
1005         switch (id) {
1006         case DIALOG_LOGIN_PROGRESS:
1007         case DIALOG_CERT_NOT_SAVED:
1008         case DIALOG_OAUTH2_LOGIN_PROGRESS:
1009             break;
1010         case DIALOG_SSL_VALIDATOR: {
1011             ((SslValidatorDialog)dialog).updateResult(mLastSslUntrustedServerResult);
1012             break;
1013         }
1014         default:
1015             Log_OC.e(TAG, "Incorrect dialog called with id = " + id);
1016         }
1017     }
1018
1019
1020     /**
1021      * {@inheritDoc}
1022      */
1023     @Override
1024     protected Dialog onCreateDialog(int id) {
1025         Dialog dialog = null;
1026         switch (id) {
1027         case DIALOG_LOGIN_PROGRESS: {
1028             /// simple progress dialog
1029             ProgressDialog working_dialog = new ProgressDialog(this);
1030             working_dialog.setMessage(getResources().getString(R.string.auth_trying_to_login));
1031             working_dialog.setIndeterminate(true);
1032             working_dialog.setCancelable(true);
1033             working_dialog
1034                     .setOnCancelListener(new DialogInterface.OnCancelListener() {
1035                         @Override
1036                         public void onCancel(DialogInterface dialog) {
1037                             /// TODO study if this is enough
1038                             Log_OC.i(TAG, "Login canceled");
1039                             if (mOperationThread != null) {
1040                                 mOperationThread.interrupt();
1041                                 finish();
1042                             }
1043                         }
1044                     });
1045             dialog = working_dialog;
1046             break;
1047         }
1048         case DIALOG_OAUTH2_LOGIN_PROGRESS: {
1049             ProgressDialog working_dialog = new ProgressDialog(this);
1050             working_dialog.setMessage(String.format("Getting authorization"));
1051             working_dialog.setIndeterminate(true);
1052             working_dialog.setCancelable(true);
1053             working_dialog
1054             .setOnCancelListener(new DialogInterface.OnCancelListener() {
1055                 @Override
1056                 public void onCancel(DialogInterface dialog) {
1057                     Log_OC.i(TAG, "Login canceled");
1058                     finish();
1059                 }
1060             });
1061             dialog = working_dialog;
1062             break;
1063         }
1064         case DIALOG_SSL_VALIDATOR: {
1065             /// TODO start to use new dialog interface, at least for this (it is a FragmentDialog already)
1066             dialog = SslValidatorDialog.newInstance(this, mLastSslUntrustedServerResult, this);
1067             break;
1068         }
1069         case DIALOG_CERT_NOT_SAVED: {
1070             AlertDialog.Builder builder = new AlertDialog.Builder(this);
1071             builder.setMessage(getResources().getString(R.string.ssl_validator_not_saved));
1072             builder.setCancelable(false);
1073             builder.setPositiveButton(R.string.common_ok, new DialogInterface.OnClickListener() {
1074                     @Override
1075                     public void onClick(DialogInterface dialog, int which) {
1076                         dialog.dismiss();
1077                     };
1078                 });
1079             dialog = builder.create();
1080             break;
1081         }
1082         default:
1083             Log_OC.e(TAG, "Incorrect dialog called with id = " + id);
1084         }
1085         return dialog;
1086     }
1087
1088
1089     /**
1090      * Starts and activity to open the 'new account' page in the ownCloud web site
1091      *
1092      * @param view      'Account register' button
1093      */
1094     public void onRegisterClick(View view) {
1095         Intent register = new Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.url_account_register)));
1096         setResult(RESULT_CANCELED);
1097         startActivity(register);
1098     }
1099
1100
1101     /**
1102      * Updates the content and visibility state of the icon and text associated
1103      * to the last check on the ownCloud server.
1104      */
1105     private void showServerStatus() {
1106         TextView tv = (TextView) findViewById(R.id.server_status_text);
1107
1108         if (mServerStatusIcon == 0 && mServerStatusText == 0) {
1109             tv.setVisibility(View.INVISIBLE);
1110
1111         } else {
1112             tv.setText(mServerStatusText);
1113             tv.setCompoundDrawablesWithIntrinsicBounds(mServerStatusIcon, 0, 0, 0);
1114             tv.setVisibility(View.VISIBLE);
1115         }
1116
1117     }
1118
1119
1120     /**
1121      * Updates the content and visibility state of the icon and text associated
1122      * to the interactions with the OAuth authorization server.
1123      */
1124     private void showAuthStatus() {
1125         if (mAuthStatusIcon == 0 && mAuthStatusText == 0) {
1126             mAuthStatusLayout.setVisibility(View.INVISIBLE);
1127
1128         } else {
1129             mAuthStatusLayout.setText(mAuthStatusText);
1130             mAuthStatusLayout.setCompoundDrawablesWithIntrinsicBounds(mAuthStatusIcon, 0, 0, 0);
1131             mAuthStatusLayout.setVisibility(View.VISIBLE);
1132         }
1133     }
1134
1135
1136     private void showRefreshButton() {
1137         mHostUrlInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.ic_action_refresh_black, 0);
1138     }
1139
1140     private void hideRefreshButton() {
1141         mHostUrlInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
1142     }
1143
1144     /**
1145      * Called when the refresh button in the input field for ownCloud host is clicked.
1146      *
1147      * Performs a new check on the URL in the input field.
1148      *
1149      * @param view      Refresh 'button'
1150      */
1151     public void onRefreshClick() {
1152         checkOcServer();
1153     }
1154
1155
1156
1157     /**
1158      * Called when the eye icon in the password field is clicked.
1159      *
1160      * Toggles the visibility of the password in the field.
1161      */
1162     public void onViewPasswordClick() {
1163         int selectionStart = mPasswordInput.getSelectionStart();
1164         int selectionEnd = mPasswordInput.getSelectionEnd();
1165         if (isPasswordVisible()) {
1166             hidePassword();
1167         } else {
1168             showPassword();
1169         }
1170         mPasswordInput.setSelection(selectionStart, selectionEnd);
1171     }
1172
1173
1174     /**
1175      * Called when the checkbox for OAuth authorization is clicked.
1176      *
1177      * Hides or shows the input fields for user & password.
1178      *
1179      * @param view      'View password' 'button'
1180      */
1181     public void onCheckClick(View view) {
1182         CheckBox oAuth2Check = (CheckBox)view;
1183         changeViewByOAuth2Check(oAuth2Check.isChecked());
1184
1185     }
1186
1187     /**
1188      * Changes the visibility of input elements depending upon the kind of authorization
1189      * chosen by the user: basic or OAuth
1190      *
1191      * @param checked       'True' when OAuth is selected.
1192      */
1193     public void changeViewByOAuth2Check(Boolean checked) {
1194
1195         if (checked) {
1196             mOAuthAuthEndpointText.setVisibility(View.VISIBLE);
1197             mOAuthTokenEndpointText.setVisibility(View.VISIBLE);
1198             mUsernameInput.setVisibility(View.GONE);
1199             mPasswordInput.setVisibility(View.GONE);
1200         } else {
1201             mOAuthAuthEndpointText.setVisibility(View.GONE);
1202             mOAuthTokenEndpointText.setVisibility(View.GONE);
1203             mUsernameInput.setVisibility(View.VISIBLE);
1204             mPasswordInput.setVisibility(View.VISIBLE);
1205         }
1206
1207     }
1208
1209     /**
1210      * Called from SslValidatorDialog when a new server certificate was correctly saved.
1211      */
1212     public void onSavedCertificate() {
1213         mOperationThread = mOcServerChkOperation.retry(this, mHandler);
1214     }
1215
1216     /**
1217      * Called from SslValidatorDialog when a new server certificate could not be saved
1218      * when the user requested it.
1219      */
1220     @Override
1221     public void onFailedSavingCertificate() {
1222         showDialog(DIALOG_CERT_NOT_SAVED);
1223     }
1224
1225
1226     /**
1227      *  Called when the 'action' button in an IME is pressed ('enter' in software keyboard).
1228      *
1229      *  Used to trigger the authorization check when the user presses 'enter' after writing the password.
1230      */
1231     @Override
1232     public boolean onEditorAction(TextView inputField, int actionId, KeyEvent event) {
1233         if (inputField != null && inputField.equals(mPasswordInput) &&
1234                 actionId == EditorInfo.IME_ACTION_DONE) {
1235             if (mOkButton.isEnabled()) {
1236                 mOkButton.performClick();
1237             }
1238         }
1239         return false;   // always return false to grant that the software keyboard is hidden anyway
1240     }
1241
1242
1243     private abstract static class RightDrawableOnTouchListener implements OnTouchListener  {
1244
1245         private int fuzz = 10;
1246
1247         /**
1248          * {@inheritDoc}
1249          */
1250         @Override
1251         public boolean onTouch(View view, MotionEvent event) {
1252             Drawable rightDrawable = null;
1253             if (view instanceof TextView) {
1254                 Drawable[] drawables = ((TextView)view).getCompoundDrawables();
1255                 if (drawables.length > 2) {
1256                     rightDrawable = drawables[2];
1257                 }
1258             }
1259             if (rightDrawable != null) {
1260                 final int x = (int) event.getX();
1261                 final int y = (int) event.getY();
1262                 final Rect bounds = rightDrawable.getBounds();
1263                 if (x >= (view.getRight() - bounds.width() - fuzz) && x <= (view.getRight() - view.getPaddingRight() + fuzz)
1264                     && y >= (view.getPaddingTop() - fuzz) && y <= (view.getHeight() - view.getPaddingBottom()) + fuzz) {
1265
1266                     return onDrawableTouch(event);
1267                 }
1268             }
1269             return false;
1270         }
1271
1272         public abstract boolean onDrawableTouch(final MotionEvent event);
1273     }
1274
1275 }