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     private static final String KEY_REFRESH_BUTTON_ENABLED = "KEY_REFRESH_BUTTON_ENABLED";
 101
 102     private static final String OAUTH_MODE_ON = "on";
 103     private static final String OAUTH_MODE_OFF = "off";
 104     private static final String OAUTH_MODE_OPTIONAL = "optional";
 105
 106     private static final int DIALOG_LOGIN_PROGRESS = 0;
 107     private static final int DIALOG_SSL_VALIDATOR = 1;
 108     private static final int DIALOG_CERT_NOT_SAVED = 2;
 109     private static final int DIALOG_OAUTH2_LOGIN_PROGRESS = 3;
 110
 111     public static final byte ACTION_CREATE = 0;
 112     public static final byte ACTION_UPDATE_TOKEN = 1;
 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     private boolean mRefreshButtonEnabled;
 146
 147     private boolean mHostUrlInputEnabled;
 148
 149
 150     /**
 151      * {@inheritDoc}
 152      *
 153      * IMPORTANT ENTRY POINT 1: activity is shown to the user
 154      */
 155     @Override
 156     protected void onCreate(Bundle savedInstanceState) {
 157         super.onCreate(savedInstanceState);
 158         getWindow().requestFeature(Window.FEATURE_NO_TITLE);
 159
 160         /// set view and get references to view elements
 161         setContentView(R.layout.account_setup);
 162         mHostUrlInput = (EditText) findViewById(R.id.hostUrlInput);
 163         mUsernameInput = (EditText) findViewById(R.id.account_username);
 164         mPasswordInput = (EditText) findViewById(R.id.account_password);
 165         mOAuthAuthEndpointText = (TextView)findViewById(R.id.oAuthEntryPoint_1);
 166         mOAuthTokenEndpointText = (TextView)findViewById(R.id.oAuthEntryPoint_2);
 167         mOAuth2Check = (CheckBox) findViewById(R.id.oauth_onOff_check);
 168         mOkButton = findViewById(R.id.buttonOK);
 169         mAuthStatusLayout = (TextView) findViewById(R.id.auth_status_text);
 170
 171         /// set Host Url Input Enabled
 172         mHostUrlInputEnabled = getResources().getBoolean(R.bool.show_server_url_input);
 173
 174         /// complete label for 'register account' button
 175         Button b = (Button) findViewById(R.id.account_register);
 176         if (b != null) {
 177             b.setText(String.format(getString(R.string.auth_register), getString(R.string.app_name)));
 178         }
 179
 180         /// initialization
 181         mAccountMgr = AccountManager.get(this);
 182         mNewCapturedUriFromOAuth2Redirection = null;
 183         mAction = getIntent().getByteExtra(EXTRA_ACTION, ACTION_CREATE);
 184         mAccount = null;
 185         mHostBaseUrl = "";
 186         if (!mHostUrlInputEnabled)
 187         {
 188             mHostUrlInput.setText(getString(R.string.server_url));
 189             mHostUrlInput.setVisibility(View.GONE);
 190             checkOcServer();
 191         }
 192
 193         if (savedInstanceState == null) {
 194             /// connection state and info
 195             mServerStatusText = mServerStatusIcon = 0;
 196             mServerIsValid = false;
 197             mServerIsChecked = false;
 198             mIsSslConn = false;
 199             mAuthStatusText = mAuthStatusIcon = 0;
 200
 201             /// retrieve extras from intent
 202             String tokenType = getIntent().getExtras().getString(AccountAuthenticator.KEY_AUTH_TOKEN_TYPE);
 203             boolean oAuthRequired = AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN.equals(tokenType) || OAUTH_MODE_ON.equals(getString(R.string.oauth2_mode));
 204
 205             mAccount = getIntent().getExtras().getParcelable(EXTRA_ACCOUNT);
 206             if (mAccount != null) {
 207                 String ocVersion = mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_OC_VERSION);
 208                 if (ocVersion != null) {
 209                     mDiscoveredVersion = new OwnCloudVersion(ocVersion);
 210                 }
 211                 mHostBaseUrl = normalizeUrl(mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_OC_BASE_URL));
 212                 mHostUrlInput.setText(mHostBaseUrl);
 213                 String userName = mAccount.name.substring(0, mAccount.name.lastIndexOf('@'));
 214                 mUsernameInput.setText(userName);
 215                 oAuthRequired = (mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_SUPPORTS_OAUTH2) != null);
 216             }
 217             mOAuth2Check.setChecked(oAuthRequired);
 218             changeViewByOAuth2Check(oAuthRequired);
 219
 220
 221         } else {
 222             /// connection state and info
 223             mServerIsValid = savedInstanceState.getBoolean(KEY_SERVER_VALID);
 224             mServerIsChecked = savedInstanceState.getBoolean(KEY_SERVER_CHECKED);
 225             mServerStatusText = savedInstanceState.getInt(KEY_SERVER_STATUS_TEXT);
 226             mServerStatusIcon = savedInstanceState.getInt(KEY_SERVER_STATUS_ICON);
 227             mIsSslConn = savedInstanceState.getBoolean(KEY_IS_SSL_CONN);
 228             mAuthStatusText = savedInstanceState.getInt(KEY_AUTH_STATUS_TEXT);
 229             mAuthStatusIcon = savedInstanceState.getInt(KEY_AUTH_STATUS_ICON);
 230             if (savedInstanceState.getBoolean(KEY_PASSWORD_VISIBLE, false)) {
 231                 showPassword();
 232             }
 233
 234             /// server data
 235             String ocVersion = savedInstanceState.getString(KEY_OC_VERSION);
 236             if (ocVersion != null) {
 237                 mDiscoveredVersion = new OwnCloudVersion(ocVersion);
 238             }
 239             mHostBaseUrl = savedInstanceState.getString(KEY_HOST_URL_TEXT);
 240
 241             // account data, if updating
 242             mAccount = savedInstanceState.getParcelable(KEY_ACCOUNT);
 243
 244             // check if server check was interrupted by a configuration change
 245             if (savedInstanceState.getBoolean(KEY_SERVER_CHECK_IN_PROGRESS, false)) {
 246                 checkOcServer();
 247             }
 248
 249             // refresh button enabled
 250             mRefreshButtonEnabled = savedInstanceState.getBoolean(KEY_REFRESH_BUTTON_ENABLED);
 251
 252         }
 253
 254         showServerStatus();
 255         showAuthStatus();
 256         if (mServerIsChecked && !mServerIsValid && mRefreshButtonEnabled) showRefreshButton();
 257         mOkButton.setEnabled(mServerIsValid); // state not automatically recovered in configuration changes
 258
 259         if (!OAUTH_MODE_OPTIONAL.equals(getString(R.string.oauth2_mode))) {
 260             mOAuth2Check.setVisibility(View.GONE);
 261         }
 262
 263         if (mAction == ACTION_UPDATE_TOKEN) {
 264             /// lock things that should not change
 265             mHostUrlInput.setEnabled(false);
 266             mUsernameInput.setEnabled(false);
 267             mOAuth2Check.setVisibility(View.GONE);
 268             if (!mServerIsValid && mOcServerChkOperation == null) {
 269                 checkOcServer();
 270             }
 271         }
 272
 273         mPasswordInput.setText("");     // clean password to avoid social hacking (disadvantage: password in removed if the device is turned aside)
 274         mJustCreated = true;
 275
 276         /// bind view elements to listeners
 277         mHostUrlInput.setOnFocusChangeListener(this);
 278         mHostUrlInput.setOnTouchListener(new RightDrawableOnTouchListener() {
 279             @Override
 280             public boolean onDrawableTouch(final MotionEvent event) {
 281                 if (event.getAction() == MotionEvent.ACTION_UP) {
 282                     AuthenticatorActivity.this.onRefreshClick();
 283                 }
 284                 return true;
 285             }
 286         });
 287         mHostUrlInput.addTextChangedListener(new TextWatcher() {
 288
 289             @Override
 290             public void afterTextChanged(Editable s) {
 291                 if (!mHostBaseUrl.equals(normalizeUrl(mHostUrlInput.getText().toString()))) {
 292                     mOkButton.setEnabled(false);
 293                 }
 294             }
 295
 296             @Override
 297             public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
 298
 299             @Override
 300             public void onTextChanged(CharSequence s, int start, int before, int count) {}
 301
 302         });
 303         mPasswordInput.setOnFocusChangeListener(this);
 304         mPasswordInput.setImeOptions(EditorInfo.IME_ACTION_DONE);
 305         mPasswordInput.setOnEditorActionListener(this);
 306         mPasswordInput.setOnTouchListener(new RightDrawableOnTouchListener() {
 307             @Override
 308             public boolean onDrawableTouch(final MotionEvent event) {
 309                 if (event.getAction() == MotionEvent.ACTION_UP) {
 310                     AuthenticatorActivity.this.onViewPasswordClick();
 311                 }
 312                 return true;
 313             }
 314         });
 315     }
 316
 317     /**
 318      * Saves relevant state before {@link #onPause()}
 319      *
 320      * Do NOT save {@link #mNewCapturedUriFromOAuth2Redirection}; it keeps a temporal flag, intended to defer the
 321      * processing of the redirection caught in {@link #onNewIntent(Intent)} until {@link #onResume()}
 322      *
 323      * See {@link #loadSavedInstanceState(Bundle)}
 324      */
 325     @Override
 326     protected void onSaveInstanceState(Bundle outState) {
 327         super.onSaveInstanceState(outState);
 328
 329         /// connection state and info
 330         outState.putInt(KEY_SERVER_STATUS_TEXT, mServerStatusText);
 331         outState.putInt(KEY_SERVER_STATUS_ICON, mServerStatusIcon);
 332         outState.putBoolean(KEY_SERVER_VALID, mServerIsValid);
 333         outState.putBoolean(KEY_SERVER_CHECKED, mServerIsChecked);
 334         outState.putBoolean(KEY_SERVER_CHECK_IN_PROGRESS, (!mServerIsValid && mOcServerChkOperation != null));
 335         outState.putBoolean(KEY_IS_SSL_CONN, mIsSslConn);
 336         outState.putBoolean(KEY_PASSWORD_VISIBLE, isPasswordVisible());
 337         outState.putInt(KEY_AUTH_STATUS_ICON, mAuthStatusIcon);
 338         outState.putInt(KEY_AUTH_STATUS_TEXT, mAuthStatusText);
 339
 340         /// server data
 341         if (mDiscoveredVersion != null) {
 342             outState.putString(KEY_OC_VERSION, mDiscoveredVersion.toString());
 343         }
 344         outState.putString(KEY_HOST_URL_TEXT, mHostBaseUrl);
 345
 346         /// account data, if updating
 347         if (mAccount != null) {
 348             outState.putParcelable(KEY_ACCOUNT, mAccount);
 349         }
 350
 351         // refresh button enabled
 352         outState.putBoolean(KEY_REFRESH_BUTTON_ENABLED, mRefreshButtonEnabled);
 353
 354     }
 355
 356
 357     /**
 358      * The redirection triggered by the OAuth authentication server as response to the GET AUTHORIZATION request
 359      * is caught here.
 360      *
 361      * To make this possible, this activity needs to be qualified with android:launchMode = "singleTask" in the
 362      * AndroidManifest.xml file.
 363      */
 364     @Override
 365     protected void onNewIntent (Intent intent) {
 366         Log_OC.d(TAG, "onNewIntent()");
 367         Uri data = intent.getData();
 368         if (data != null && data.toString().startsWith(getString(R.string.oauth2_redirect_uri))) {
 369             mNewCapturedUriFromOAuth2Redirection = data;
 370         }
 371     }
 372
 373
 374     /**
 375      * The redirection triggered by the OAuth authentication server as response to the GET AUTHORIZATION, and
 376      * deferred in {@link #onNewIntent(Intent)}, is processed here.
 377      */
 378     @Override
 379     protected void onResume() {
 380         super.onResume();
 381         // the state of mOAuth2Check is automatically recovered between configuration changes, but not before onCreate() finishes; so keep the next lines here
 382         changeViewByOAuth2Check(mOAuth2Check.isChecked());
 383         if (mAction == ACTION_UPDATE_TOKEN && mJustCreated) {
 384             if (mOAuth2Check.isChecked())
 385                 Toast.makeText(this, R.string.auth_expired_oauth_token_toast, Toast.LENGTH_LONG).show();
 386             else
 387                 Toast.makeText(this, R.string.auth_expired_basic_auth_toast, Toast.LENGTH_LONG).show();
 388         }
 389
 390         if (mNewCapturedUriFromOAuth2Redirection != null) {
 391             getOAuth2AccessTokenFromCapturedRedirection();
 392         }
 393
 394         mJustCreated = false;
 395     }
 396
 397
 398     /**
 399      * Parses the redirection with the response to the GET AUTHORIZATION request to the
 400      * oAuth server and requests for the access token (GET ACCESS TOKEN)
 401      */
 402     private void getOAuth2AccessTokenFromCapturedRedirection() {
 403         /// Parse data from OAuth redirection
 404         String queryParameters = mNewCapturedUriFromOAuth2Redirection.getQuery();
 405         mNewCapturedUriFromOAuth2Redirection = null;
 406
 407         /// Showing the dialog with instructions for the user.
 408         showDialog(DIALOG_OAUTH2_LOGIN_PROGRESS);
 409
 410         /// GET ACCESS TOKEN to the oAuth server
 411         RemoteOperation operation = new OAuth2GetAccessToken(   getString(R.string.oauth2_client_id),
 412                 getString(R.string.oauth2_redirect_uri),
 413                 getString(R.string.oauth2_grant_type),
 414                 queryParameters);
 415         //WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(getString(R.string.oauth2_url_endpoint_access)), getApplicationContext());
 416         WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mOAuthTokenEndpointText.getText().toString().trim()), getApplicationContext());
 417         operation.execute(client, this, mHandler);
 418     }
 419
 420
 421
 422     /**
 423      * Handles the change of focus on the text inputs for the server URL and the password
 424      */
 425     public void onFocusChange(View view, boolean hasFocus) {
 426         if (view.getId() == R.id.hostUrlInput) {
 427             if (!hasFocus) {
 428                 onUrlInputFocusLost((TextView) view);
 429                 if (!mServerIsValid) {
 430                     showRefreshButton();
 431                 }
 432             }
 433             else {
 434                 hideRefreshButton();
 435             }
 436
 437         } else if (view.getId() == R.id.account_password) {
 438             onPasswordFocusChanged((TextView) view, hasFocus);
 439         }
 440     }
 441
 442
 443     /**
 444      * Handles changes in focus on the text input for the server URL.
 445      *
 446      * IMPORTANT ENTRY POINT 2: When (!hasFocus), user wrote the server URL and changed to
 447      * other field. The operation to check the existence of the server in the entered URL is
 448      * started.
 449      *
 450      * When hasFocus:    user 'comes back' to write again the server URL.
 451      *
 452      * @param hostInput     TextView with the URL input field receiving the change of focus.
 453      */
 454     private void onUrlInputFocusLost(TextView hostInput) {
 455         if (!mHostBaseUrl.equals(normalizeUrl(mHostUrlInput.getText().toString()))) {
 456             checkOcServer();
 457         } else {
 458             mOkButton.setEnabled(mServerIsValid);
 459         }
 460     }
 461
 462
 463     private void checkOcServer() {
 464         String uri = trimUrlWebdav(mHostUrlInput.getText().toString().trim());
 465
 466         if (!mHostUrlInputEnabled){
 467             uri = getString(R.string.server_url);
 468         }
 469
 470         mServerIsValid = false;
 471         mServerIsChecked = false;
 472         mOkButton.setEnabled(false);
 473         mDiscoveredVersion = null;
 474         hideRefreshButton();
 475         if (uri.length() != 0) {
 476             mServerStatusText = R.string.auth_testing_connection;
 477             mServerStatusIcon = R.drawable.progress_small;
 478             showServerStatus();
 479             mOcServerChkOperation = new  OwnCloudServerCheckOperation(uri, this);
 480             WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(uri), this);
 481             mOperationThread = mOcServerChkOperation.execute(client, this, mHandler);
 482         } else {
 483             mServerStatusText = 0;
 484             mServerStatusIcon = 0;
 485             showServerStatus();
 486         }
 487     }
 488
 489
 490     /**
 491      * Handles changes in focus on the text input for the password (basic authorization).
 492      *
 493      * When (hasFocus), the button to toggle password visibility is shown.
 494      *
 495      * When (!hasFocus), the button is made invisible and the password is hidden.
 496      *
 497      * @param passwordInput    TextView with the password input field receiving the change of focus.
 498      * @param hasFocus          'True' if focus is received, 'false' if is lost
 499      */
 500     private void onPasswordFocusChanged(TextView passwordInput, boolean hasFocus) {
 501         if (hasFocus) {
 502             showViewPasswordButton();
 503         } else {
 504             hidePassword();
 505             hidePasswordButton();
 506         }
 507     }
 508
 509
 510     private void showViewPasswordButton() {
 511         //int drawable = android.R.drawable.ic_menu_view;
 512         int drawable = R.drawable.ic_view;
 513         if (isPasswordVisible()) {
 514             //drawable = android.R.drawable.ic_secure;
 515             drawable = R.drawable.ic_hide;
 516         }
 517         mPasswordInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, drawable, 0);
 518     }
 519
 520     private boolean isPasswordVisible() {
 521         return ((mPasswordInput.getInputType() & InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD) == InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
 522     }
 523
 524     private void hidePasswordButton() {
 525         mPasswordInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
 526     }
 527
 528     private void showPassword() {
 529         mPasswordInput.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
 530         showViewPasswordButton();
 531     }
 532
 533     private void hidePassword() {
 534         mPasswordInput.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
 535         showViewPasswordButton();
 536     }
 537
 538
 539     /**
 540      * Cancels the authenticator activity
 541      *
 542      * IMPORTANT ENTRY POINT 3: Never underestimate the importance of cancellation
 543      *
 544      * This method is bound in the layout/acceoun_setup.xml resource file.
 545      *
 546      * @param view      Cancel button
 547      */
 548     public void onCancelClick(View view) {
 549         setResult(RESULT_CANCELED);     // TODO review how is this related to AccountAuthenticator (debugging)
 550         finish();
 551     }
 552
 553
 554
 555     /**
 556      * Checks the credentials of the user in the root of the ownCloud server
 557      * before creating a new local account.
 558      *
 559      * For basic authorization, a check of existence of the root folder is
 560      * performed.
 561      *
 562      * For OAuth, starts the flow to get an access token; the credentials test
 563      * is postponed until it is available.
 564      *
 565      * IMPORTANT ENTRY POINT 4
 566      *
 567      * @param view      OK button
 568      */
 569     public void onOkClick(View view) {
 570         // this check should be unnecessary
 571         if (mDiscoveredVersion == null || !mDiscoveredVersion.isVersionValid()  || mHostBaseUrl == null || mHostBaseUrl.length() == 0) {
 572             mServerStatusIcon = R.drawable.common_error;
 573             mServerStatusText = R.string.auth_wtf_reenter_URL;
 574             showServerStatus();
 575             mOkButton.setEnabled(false);
 576             Log_OC.wtf(TAG,  "The user was allowed to click 'connect' to an unchecked server!!");
 577             return;
 578         }
 579
 580         if (mOAuth2Check.isChecked()) {
 581             startOauthorization();
 582
 583         } else {
 584             checkBasicAuthorization();
 585         }
 586     }
 587
 588
 589     /**
 590      * Tests the credentials entered by the user performing a check of existence on
 591      * the root folder of the ownCloud server.
 592      */
 593     private void checkBasicAuthorization() {
 594         /// get the path to the root folder through WebDAV from the version server
 595         String webdav_path = AccountUtils.getWebdavPath(mDiscoveredVersion, false);
 596
 597         /// get basic credentials entered by user
 598         String username = mUsernameInput.getText().toString();
 599         String password = mPasswordInput.getText().toString();
 600
 601         /// be gentle with the user
 602         showDialog(DIALOG_LOGIN_PROGRESS);
 603
 604         /// test credentials accessing the root folder
 605         mAuthCheckOperation = new  ExistenceCheckOperation("", this, false);
 606         WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mHostBaseUrl + webdav_path), this);
 607         client.setBasicCredentials(username, password);
 608         mOperationThread = mAuthCheckOperation.execute(client, this, mHandler);
 609     }
 610
 611
 612     /**
 613      * Starts the OAuth 'grant type' flow to get an access token, with
 614      * a GET AUTHORIZATION request to the BUILT-IN authorization server.
 615      */
 616     private void startOauthorization() {
 617         // be gentle with the user
 618         mAuthStatusIcon = R.drawable.progress_small;
 619         mAuthStatusText = R.string.oauth_login_connection;
 620         showAuthStatus();
 621
 622         // GET AUTHORIZATION request
 623         //Uri uri = Uri.parse(getString(R.string.oauth2_url_endpoint_auth));
 624         Uri uri = Uri.parse(mOAuthAuthEndpointText.getText().toString().trim());
 625         Uri.Builder uriBuilder = uri.buildUpon();
 626         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_RESPONSE_TYPE, getString(R.string.oauth2_response_type));
 627         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_REDIRECT_URI, getString(R.string.oauth2_redirect_uri));
 628         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_CLIENT_ID, getString(R.string.oauth2_client_id));
 629         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_SCOPE, getString(R.string.oauth2_scope));
 630         //uriBuilder.appendQueryParameter(OAuth2Constants.KEY_STATE, whateverwewant);
 631         uri = uriBuilder.build();
 632         Log_OC.d(TAG, "Starting browser to view " + uri.toString());
 633         Intent i = new Intent(Intent.ACTION_VIEW, uri);
 634         startActivity(i);
 635     }
 636
 637
 638     /**
 639      * Callback method invoked when a RemoteOperation executed by this Activity finishes.
 640      *
 641      * Dispatches the operation flow to the right method.
 642      */
 643     @Override
 644     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 645
 646         if (operation instanceof OwnCloudServerCheckOperation) {
 647             onOcServerCheckFinish((OwnCloudServerCheckOperation) operation, result);
 648
 649         } else if (operation instanceof OAuth2GetAccessToken) {
 650             onGetOAuthAccessTokenFinish((OAuth2GetAccessToken)operation, result);
 651
 652         } else if (operation instanceof ExistenceCheckOperation)  {
 653             onAuthorizationCheckFinish((ExistenceCheckOperation)operation, result);
 654
 655         }
 656     }
 657
 658
 659     /**
 660      * Processes the result of the server check performed when the user finishes the enter of the
 661      * server URL.
 662      *
 663      * @param operation     Server check performed.
 664      * @param result        Result of the check.
 665      */
 666     private void onOcServerCheckFinish(OwnCloudServerCheckOperation operation, RemoteOperationResult result) {
 667         if (operation.equals(mOcServerChkOperation)) {
 668             /// save result state
 669             mServerIsChecked = true;
 670             mServerIsValid = result.isSuccess();
 671             mIsSslConn = (result.getCode() == ResultCode.OK_SSL);
 672             mOcServerChkOperation = null;
 673
 674             /// update status icon and text
 675             if (mServerIsValid) {
 676                 hideRefreshButton();
 677             } else {
 678                 showRefreshButton();
 679             }
 680             updateServerStatusIconAndText(result);
 681             showServerStatus();
 682
 683             /// very special case (TODO: move to a common place for all the remote operations)
 684             if (result.getCode() == ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED) {
 685                 mLastSslUntrustedServerResult = result;
 686                 showDialog(DIALOG_SSL_VALIDATOR);
 687             }
 688
 689             /// retrieve discovered version and normalize server URL
 690             mDiscoveredVersion = operation.getDiscoveredVersion();
 691             mHostBaseUrl = normalizeUrl(mHostUrlInput.getText().toString());
 692
 693             /// allow or not the user try to access the server
 694             mOkButton.setEnabled(mServerIsValid);
 695
 696         }   // else nothing ; only the last check operation is considered;
 697         // multiple can be triggered if the user amends a URL before a previous check can be triggered
 698     }
 699
 700
 701     private String normalizeUrl(String url) {
 702         if (url != null && url.length() > 0) {
 703             url = url.trim();
 704             if (!url.toLowerCase().startsWith("http://") &&
 705                     !url.toLowerCase().startsWith("https://")) {
 706                 if (mIsSslConn) {
 707                     url = "https://" + url;
 708                 } else {
 709                     url = "http://" + url;
 710                 }
 711             }
 712
 713             // OC-208: Add suffix remote.php/webdav to normalize (OC-34)
 714             url = trimUrlWebdav(url);
 715
 716             if (url.endsWith("/")) {
 717                 url = url.substring(0, url.length() - 1);
 718             }
 719
 720         }
 721         Log_OC.d(TAG, "URL Normalize " + url);
 722         return (url != null ? url : "");
 723     }
 724
 725
 726     private String trimUrlWebdav(String url){
 727         if(url.toLowerCase().endsWith(AccountUtils.WEBDAV_PATH_4_0)){
 728             url = url.substring(0, url.length() - AccountUtils.WEBDAV_PATH_4_0.length());
 729         } else if(url.toLowerCase().endsWith(AccountUtils.WEBDAV_PATH_2_0)){
 730             url = url.substring(0, url.length() - AccountUtils.WEBDAV_PATH_2_0.length());
 731         } else if (url.toLowerCase().endsWith(AccountUtils.WEBDAV_PATH_1_2)){
 732             url = url.substring(0, url.length() - AccountUtils.WEBDAV_PATH_1_2.length());
 733         }
 734         return (url != null ? url : "");
 735     }
 736
 737
 738     /**
 739      * Chooses the right icon and text to show to the user for the received operation result.
 740      *
 741      * @param result    Result of a remote operation performed in this activity
 742      */
 743     private void updateServerStatusIconAndText(RemoteOperationResult result) {
 744         mServerStatusIcon = R.drawable.common_error;    // the most common case in the switch below
 745
 746         switch (result.getCode()) {
 747         case OK_SSL:
 748             mServerStatusIcon = android.R.drawable.ic_secure;
 749             mServerStatusText = R.string.auth_secure_connection;
 750             break;
 751
 752         case OK_NO_SSL:
 753         case OK:
 754             if (mHostUrlInput.getText().toString().trim().toLowerCase().startsWith("http://") ) {
 755                 mServerStatusText = R.string.auth_connection_established;
 756                 mServerStatusIcon = R.drawable.ic_ok;
 757             } else {
 758                 mServerStatusText = R.string.auth_nossl_plain_ok_title;
 759                 mServerStatusIcon = android.R.drawable.ic_partial_secure;
 760             }
 761             break;
 762
 763         case NO_NETWORK_CONNECTION:
 764             mServerStatusIcon = R.drawable.no_network;
 765             mServerStatusText = R.string.auth_no_net_conn_title;
 766             break;
 767
 768         case SSL_RECOVERABLE_PEER_UNVERIFIED:
 769             mServerStatusText = R.string.auth_ssl_unverified_server_title;
 770             break;
 771         case BAD_OC_VERSION:
 772             mServerStatusText = R.string.auth_bad_oc_version_title;
 773             break;
 774         case WRONG_CONNECTION:
 775             mServerStatusText = R.string.auth_wrong_connection_title;
 776             break;
 777         case TIMEOUT:
 778             mServerStatusText = R.string.auth_timeout_title;
 779             break;
 780         case INCORRECT_ADDRESS:
 781             mServerStatusText = R.string.auth_incorrect_address_title;
 782             break;
 783         case SSL_ERROR:
 784             mServerStatusText = R.string.auth_ssl_general_error_title;
 785             break;
 786         case UNAUTHORIZED:
 787             mServerStatusText = R.string.auth_unauthorized;
 788             break;
 789         case HOST_NOT_AVAILABLE:
 790             mServerStatusText = R.string.auth_unknown_host_title;
 791             break;
 792         case INSTANCE_NOT_CONFIGURED:
 793             mServerStatusText = R.string.auth_not_configured_title;
 794             break;
 795         case FILE_NOT_FOUND:
 796             mServerStatusText = R.string.auth_incorrect_path_title;
 797             break;
 798         case OAUTH2_ERROR:
 799             mServerStatusText = R.string.auth_oauth_error;
 800             break;
 801         case OAUTH2_ERROR_ACCESS_DENIED:
 802             mServerStatusText = R.string.auth_oauth_error_access_denied;
 803             break;
 804         case UNHANDLED_HTTP_CODE:
 805         case UNKNOWN_ERROR:
 806             mServerStatusText = R.string.auth_unknown_error_title;
 807             break;
 808         default:
 809             mServerStatusText = 0;
 810             mServerStatusIcon = 0;
 811         }
 812     }
 813
 814
 815     /**
 816      * Chooses the right icon and text to show to the user for the received operation result.
 817      *
 818      * @param result    Result of a remote operation performed in this activity
 819      */
 820     private void updateAuthStatusIconAndText(RemoteOperationResult result) {
 821         mAuthStatusIcon = R.drawable.common_error;    // the most common case in the switch below
 822
 823         switch (result.getCode()) {
 824         case OK_SSL:
 825             mAuthStatusIcon = android.R.drawable.ic_secure;
 826             mAuthStatusText = R.string.auth_secure_connection;
 827             break;
 828
 829         case OK_NO_SSL:
 830         case OK:
 831             if (mHostUrlInput.getText().toString().trim().toLowerCase().startsWith("http://") ) {
 832                 mAuthStatusText = R.string.auth_connection_established;
 833                 mAuthStatusIcon = R.drawable.ic_ok;
 834             } else {
 835                 mAuthStatusText = R.string.auth_nossl_plain_ok_title;
 836                 mAuthStatusIcon = android.R.drawable.ic_partial_secure;
 837             }
 838             break;
 839
 840         case NO_NETWORK_CONNECTION:
 841             mAuthStatusIcon = R.drawable.no_network;
 842             mAuthStatusText = R.string.auth_no_net_conn_title;
 843             break;
 844
 845         case SSL_RECOVERABLE_PEER_UNVERIFIED:
 846             mAuthStatusText = R.string.auth_ssl_unverified_server_title;
 847             break;
 848         case BAD_OC_VERSION:
 849             mAuthStatusText = R.string.auth_bad_oc_version_title;
 850             break;
 851         case WRONG_CONNECTION:
 852             mAuthStatusText = R.string.auth_wrong_connection_title;
 853             break;
 854         case TIMEOUT:
 855             mAuthStatusText = R.string.auth_timeout_title;
 856             break;
 857         case INCORRECT_ADDRESS:
 858             mAuthStatusText = R.string.auth_incorrect_address_title;
 859             break;
 860         case SSL_ERROR:
 861             mAuthStatusText = R.string.auth_ssl_general_error_title;
 862             break;
 863         case UNAUTHORIZED:
 864             mAuthStatusText = R.string.auth_unauthorized;
 865             break;
 866         case HOST_NOT_AVAILABLE:
 867             mAuthStatusText = R.string.auth_unknown_host_title;
 868             break;
 869         case INSTANCE_NOT_CONFIGURED:
 870             mAuthStatusText = R.string.auth_not_configured_title;
 871             break;
 872         case FILE_NOT_FOUND:
 873             mAuthStatusText = R.string.auth_incorrect_path_title;
 874             break;
 875         case OAUTH2_ERROR:
 876             mAuthStatusText = R.string.auth_oauth_error;
 877             break;
 878         case OAUTH2_ERROR_ACCESS_DENIED:
 879             mAuthStatusText = R.string.auth_oauth_error_access_denied;
 880             break;
 881         case UNHANDLED_HTTP_CODE:
 882         case UNKNOWN_ERROR:
 883             mAuthStatusText = R.string.auth_unknown_error_title;
 884             break;
 885         default:
 886             mAuthStatusText = 0;
 887             mAuthStatusIcon = 0;
 888         }
 889     }
 890
 891
 892     /**
 893      * Processes the result of the request for and access token send
 894      * to an OAuth authorization server.
 895      *
 896      * @param operation     Operation performed requesting the access token.
 897      * @param result        Result of the operation.
 898      */
 899     private void onGetOAuthAccessTokenFinish(OAuth2GetAccessToken operation, RemoteOperationResult result) {
 900         try {
 901             dismissDialog(DIALOG_OAUTH2_LOGIN_PROGRESS);
 902         } catch (IllegalArgumentException e) {
 903             // NOTHING TO DO ; can't find out what situation that leads to the exception in this code, but user logs signal that it happens
 904         }
 905
 906         String webdav_path = AccountUtils.getWebdavPath(mDiscoveredVersion, true);
 907         if (result.isSuccess() && webdav_path != null) {
 908             /// be gentle with the user
 909             showDialog(DIALOG_LOGIN_PROGRESS);
 910
 911             /// time to test the retrieved access token on the ownCloud server
 912             mOAuthAccessToken = ((OAuth2GetAccessToken)operation).getResultTokenMap().get(OAuth2Constants.KEY_ACCESS_TOKEN);
 913             Log_OC.d(TAG, "Got ACCESS TOKEN: " + mOAuthAccessToken);
 914             mAuthCheckOperation = new ExistenceCheckOperation("", this, false);
 915             WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mHostBaseUrl + webdav_path), this);
 916             client.setBearerCredentials(mOAuthAccessToken);
 917             mAuthCheckOperation.execute(client, this, mHandler);
 918
 919         } else {
 920             updateAuthStatusIconAndText(result);
 921             showAuthStatus();
 922             Log_OC.d(TAG, "Access failed: " + result.getLogMessage());
 923         }
 924     }
 925
 926
 927     /**
 928      * Processes the result of the access check performed to try the user credentials.
 929      *
 930      * Creates a new account through the AccountManager.
 931      *
 932      * @param operation     Access check performed.
 933      * @param result        Result of the operation.
 934      */
 935     private void onAuthorizationCheckFinish(ExistenceCheckOperation operation, RemoteOperationResult result) {
 936         try {
 937             dismissDialog(DIALOG_LOGIN_PROGRESS);
 938         } catch (IllegalArgumentException e) {
 939             // NOTHING TO DO ; can't find out what situation that leads to the exception in this code, but user logs signal that it happens
 940         }
 941
 942         if (result.isSuccess()) {
 943             Log_OC.d(TAG, "Successful access - time to save the account");
 944
 945             if (mAction == ACTION_CREATE) {
 946                 createAccount();
 947
 948             } else {
 949                 updateToken();
 950             }
 951
 952             finish();
 953
 954         } else if (result.isServerFail() || result.isException()) {
 955             /// if server fail or exception in authorization, the UI is updated as when a server check failed
 956             mServerIsChecked = true;
 957             mServerIsValid = false;
 958             mIsSslConn = false;
 959             mOcServerChkOperation = null;
 960             mDiscoveredVersion = null;
 961             mHostBaseUrl = normalizeUrl(mHostUrlInput.getText().toString());
 962
 963             // update status icon and text
 964             updateServerStatusIconAndText(result);
 965             showServerStatus();
 966             mAuthStatusIcon = 0;
 967             mAuthStatusText = 0;
 968             showAuthStatus();
 969
 970             // update input controls state
 971             showRefreshButton();
 972             mOkButton.setEnabled(false);
 973
 974             // very special case (TODO: move to a common place for all the remote operations) (dangerous here?)
 975             if (result.getCode() == ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED) {
 976                 mLastSslUntrustedServerResult = result;
 977                 showDialog(DIALOG_SSL_VALIDATOR);
 978             }
 979
 980         } else {    // authorization fail due to client side - probably wrong credentials
 981             updateAuthStatusIconAndText(result);
 982             showAuthStatus();
 983             Log_OC.d(TAG, "Access failed: " + result.getLogMessage());
 984         }
 985     }
 986
 987
 988     /**
 989      * Sets the proper response to get that the Account Authenticator that started this activity saves
 990      * a new authorization token for mAccount.
 991      */
 992     private void updateToken() {
 993         Bundle response = new Bundle();
 994         response.putString(AccountManager.KEY_ACCOUNT_NAME, mAccount.name);
 995         response.putString(AccountManager.KEY_ACCOUNT_TYPE, mAccount.type);
 996         boolean isOAuth = mOAuth2Check.isChecked();
 997         if (isOAuth) {
 998             response.putString(AccountManager.KEY_AUTHTOKEN, mOAuthAccessToken);
 999             // the next line is necessary; by now, notifications are calling directly to the AuthenticatorActivity to update, without AccountManager intervention
1000             mAccountMgr.setAuthToken(mAccount, AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN, mOAuthAccessToken);
1001         } else {
1002             response.putString(AccountManager.KEY_AUTHTOKEN, mPasswordInput.getText().toString());
1003             mAccountMgr.setPassword(mAccount, mPasswordInput.getText().toString());
1004         }
1005         setAccountAuthenticatorResult(response);
1006     }
1007
1008
1009     /**
1010      * Creates a new account through the Account Authenticator that started this activity.
1011      *
1012      * This makes the account permanent.
1013      *
1014      * TODO Decide how to name the OAuth accounts
1015      */
1016     private void createAccount() {
1017         /// create and save new ownCloud account
1018         boolean isOAuth = mOAuth2Check.isChecked();
1019
1020         Uri uri = Uri.parse(mHostBaseUrl);
1021         String username = mUsernameInput.getText().toString().trim();
1022         if (isOAuth) {
1023             username = "OAuth_user" + (new java.util.Random(System.currentTimeMillis())).nextLong();
1024         }
1025         String accountName = username + "@" + uri.getHost();
1026         if (uri.getPort() >= 0) {
1027             accountName += ":" + uri.getPort();
1028         }
1029         mAccount = new Account(accountName, AccountAuthenticator.ACCOUNT_TYPE);
1030         if (isOAuth) {
1031             mAccountMgr.addAccountExplicitly(mAccount, "", null);  // with our implementation, the password is never input in the app
1032         } else {
1033             mAccountMgr.addAccountExplicitly(mAccount, mPasswordInput.getText().toString(), null);
1034         }
1035
1036         /// add the new account as default in preferences, if there is none already
1037         Account defaultAccount = AccountUtils.getCurrentOwnCloudAccount(this);
1038         if (defaultAccount == null) {
1039             SharedPreferences.Editor editor = PreferenceManager
1040                     .getDefaultSharedPreferences(this).edit();
1041             editor.putString("select_oc_account", accountName);
1042             editor.commit();
1043         }
1044
1045         /// prepare result to return to the Authenticator
1046         //  TODO check again what the Authenticator makes with it; probably has the same effect as addAccountExplicitly, but it's not well done
1047         final Intent intent = new Intent();
1048         intent.putExtra(AccountManager.KEY_ACCOUNT_TYPE,    AccountAuthenticator.ACCOUNT_TYPE);
1049         intent.putExtra(AccountManager.KEY_ACCOUNT_NAME,    mAccount.name);
1050         if (!isOAuth)
1051             intent.putExtra(AccountManager.KEY_AUTHTOKEN,   AccountAuthenticator.ACCOUNT_TYPE); // TODO check this; not sure it's right; maybe
1052         intent.putExtra(AccountManager.KEY_USERDATA,        username);
1053         if (isOAuth) {
1054             mAccountMgr.setAuthToken(mAccount, AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN, mOAuthAccessToken);
1055         }
1056         /// add user data to the new account; TODO probably can be done in the last parameter addAccountExplicitly, or in KEY_USERDATA
1057         mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_OC_VERSION,    mDiscoveredVersion.toString());
1058         mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_OC_BASE_URL,   mHostBaseUrl);
1059         if (isOAuth)
1060             mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_SUPPORTS_OAUTH2, "TRUE");  // TODO this flag should be unnecessary
1061
1062         setAccountAuthenticatorResult(intent.getExtras());
1063         setResult(RESULT_OK, intent);
1064
1065         /// immediately request for the synchronization of the new account
1066         Bundle bundle = new Bundle();
1067         bundle.putBoolean(ContentResolver.SYNC_EXTRAS_MANUAL, true);
1068         ContentResolver.requestSync(mAccount, AccountAuthenticator.AUTHORITY, bundle);
1069     }
1070
1071
1072     /**
1073      * {@inheritDoc}
1074      *
1075      * Necessary to update the contents of the SSL Dialog
1076      *
1077      * TODO move to some common place for all possible untrusted SSL failures
1078      */
1079     @Override
1080     protected void onPrepareDialog(int id, Dialog dialog, Bundle args) {
1081         switch (id) {
1082         case DIALOG_LOGIN_PROGRESS:
1083         case DIALOG_CERT_NOT_SAVED:
1084         case DIALOG_OAUTH2_LOGIN_PROGRESS:
1085             break;
1086         case DIALOG_SSL_VALIDATOR: {
1087             ((SslValidatorDialog)dialog).updateResult(mLastSslUntrustedServerResult);
1088             break;
1089         }
1090         default:
1091             Log_OC.e(TAG, "Incorrect dialog called with id = " + id);
1092         }
1093     }
1094
1095
1096     /**
1097      * {@inheritDoc}
1098      */
1099     @Override
1100     protected Dialog onCreateDialog(int id) {
1101         Dialog dialog = null;
1102         switch (id) {
1103         case DIALOG_LOGIN_PROGRESS: {
1104             /// simple progress dialog
1105             ProgressDialog working_dialog = new ProgressDialog(this);
1106             working_dialog.setMessage(getResources().getString(R.string.auth_trying_to_login));
1107             working_dialog.setIndeterminate(true);
1108             working_dialog.setCancelable(true);
1109             working_dialog
1110             .setOnCancelListener(new DialogInterface.OnCancelListener() {
1111                 @Override
1112                 public void onCancel(DialogInterface dialog) {
1113                     /// TODO study if this is enough
1114                     Log_OC.i(TAG, "Login canceled");
1115                     if (mOperationThread != null) {
1116                         mOperationThread.interrupt();
1117                         finish();
1118                     }
1119                 }
1120             });
1121             dialog = working_dialog;
1122             break;
1123         }
1124         case DIALOG_OAUTH2_LOGIN_PROGRESS: {
1125             ProgressDialog working_dialog = new ProgressDialog(this);
1126             working_dialog.setMessage(String.format("Getting authorization"));
1127             working_dialog.setIndeterminate(true);
1128             working_dialog.setCancelable(true);
1129             working_dialog
1130             .setOnCancelListener(new DialogInterface.OnCancelListener() {
1131                 @Override
1132                 public void onCancel(DialogInterface dialog) {
1133                     Log_OC.i(TAG, "Login canceled");
1134                     finish();
1135                 }
1136             });
1137             dialog = working_dialog;
1138             break;
1139         }
1140         case DIALOG_SSL_VALIDATOR: {
1141             /// TODO start to use new dialog interface, at least for this (it is a FragmentDialog already)
1142             dialog = SslValidatorDialog.newInstance(this, mLastSslUntrustedServerResult, this);
1143             break;
1144         }
1145         case DIALOG_CERT_NOT_SAVED: {
1146             AlertDialog.Builder builder = new AlertDialog.Builder(this);
1147             builder.setMessage(getResources().getString(R.string.ssl_validator_not_saved));
1148             builder.setCancelable(false);
1149             builder.setPositiveButton(R.string.common_ok, new DialogInterface.OnClickListener() {
1150                 @Override
1151                 public void onClick(DialogInterface dialog, int which) {
1152                     dialog.dismiss();
1153                 };
1154             });
1155             dialog = builder.create();
1156             break;
1157         }
1158         default:
1159             Log_OC.e(TAG, "Incorrect dialog called with id = " + id);
1160         }
1161         return dialog;
1162     }
1163
1164
1165     /**
1166      * Starts and activity to open the 'new account' page in the ownCloud web site
1167      *
1168      * @param view      'Account register' button
1169      */
1170     public void onRegisterClick(View view) {
1171         Intent register = new Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.url_account_register)));
1172         setResult(RESULT_CANCELED);
1173         startActivity(register);
1174     }
1175
1176
1177     /**
1178      * Updates the content and visibility state of the icon and text associated
1179      * to the last check on the ownCloud server.
1180      */
1181     private void showServerStatus() {
1182         TextView tv = (TextView) findViewById(R.id.server_status_text);
1183
1184         if (mServerStatusIcon == 0 && mServerStatusText == 0) {
1185             tv.setVisibility(View.INVISIBLE);
1186
1187         } else {
1188             tv.setText(mServerStatusText);
1189             tv.setCompoundDrawablesWithIntrinsicBounds(mServerStatusIcon, 0, 0, 0);
1190             tv.setVisibility(View.VISIBLE);
1191         }
1192
1193     }
1194
1195
1196     /**
1197      * Updates the content and visibility state of the icon and text associated
1198      * to the interactions with the OAuth authorization server.
1199      */
1200     private void showAuthStatus() {
1201         if (mAuthStatusIcon == 0 && mAuthStatusText == 0) {
1202             mAuthStatusLayout.setVisibility(View.INVISIBLE);
1203
1204         } else {
1205             mAuthStatusLayout.setText(mAuthStatusText);
1206             mAuthStatusLayout.setCompoundDrawablesWithIntrinsicBounds(mAuthStatusIcon, 0, 0, 0);
1207             mAuthStatusLayout.setVisibility(View.VISIBLE);
1208         }
1209     }
1210
1211
1212     private void showRefreshButton() {
1213         mHostUrlInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.ic_action_refresh_black, 0);
1214         mRefreshButtonEnabled = true;
1215     }
1216
1217     private void hideRefreshButton() {
1218         mHostUrlInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
1219         mRefreshButtonEnabled = false;
1220     }
1221
1222     /**
1223      * Called when the refresh button in the input field for ownCloud host is clicked.
1224      *
1225      * Performs a new check on the URL in the input field.
1226      *
1227      * @param view      Refresh 'button'
1228      */
1229     public void onRefreshClick() {
1230         checkOcServer();
1231     }
1232
1233
1234     /**
1235      * Called when the eye icon in the password field is clicked.
1236      *
1237      * Toggles the visibility of the password in the field.
1238      */
1239     public void onViewPasswordClick() {
1240         int selectionStart = mPasswordInput.getSelectionStart();
1241         int selectionEnd = mPasswordInput.getSelectionEnd();
1242         if (isPasswordVisible()) {
1243             hidePassword();
1244         } else {
1245             showPassword();
1246         }
1247         mPasswordInput.setSelection(selectionStart, selectionEnd);
1248     }
1249
1250
1251     /**
1252      * Called when the checkbox for OAuth authorization is clicked.
1253      *
1254      * Hides or shows the input fields for user & password.
1255      *
1256      * @param view      'View password' 'button'
1257      */
1258     public void onCheckClick(View view) {
1259         CheckBox oAuth2Check = (CheckBox)view;
1260         changeViewByOAuth2Check(oAuth2Check.isChecked());
1261
1262     }
1263
1264     /**
1265      * Changes the visibility of input elements depending upon the kind of authorization
1266      * chosen by the user: basic or OAuth
1267      *
1268      * @param checked       'True' when OAuth is selected.
1269      */
1270     public void changeViewByOAuth2Check(Boolean checked) {
1271
1272         if (checked) {
1273             mOAuthAuthEndpointText.setVisibility(View.VISIBLE);
1274             mOAuthTokenEndpointText.setVisibility(View.VISIBLE);
1275             mUsernameInput.setVisibility(View.GONE);
1276             mPasswordInput.setVisibility(View.GONE);
1277         } else {
1278             mOAuthAuthEndpointText.setVisibility(View.GONE);
1279             mOAuthTokenEndpointText.setVisibility(View.GONE);
1280             mUsernameInput.setVisibility(View.VISIBLE);
1281             mPasswordInput.setVisibility(View.VISIBLE);
1282         }
1283
1284     }
1285
1286     /**
1287      * Called from SslValidatorDialog when a new server certificate was correctly saved.
1288      */
1289     public void onSavedCertificate() {
1290         mOperationThread = mOcServerChkOperation.retry(this, mHandler);
1291     }
1292
1293     /**
1294      * Called from SslValidatorDialog when a new server certificate could not be saved
1295      * when the user requested it.
1296      */
1297     @Override
1298     public void onFailedSavingCertificate() {
1299         showDialog(DIALOG_CERT_NOT_SAVED);
1300     }
1301
1302
1303     /**
1304      *  Called when the 'action' button in an IME is pressed ('enter' in software keyboard).
1305      *
1306      *  Used to trigger the authorization check when the user presses 'enter' after writing the password.
1307      */
1308     @Override
1309     public boolean onEditorAction(TextView inputField, int actionId, KeyEvent event) {
1310         if (inputField != null && inputField.equals(mPasswordInput) &&
1311                 actionId == EditorInfo.IME_ACTION_DONE) {
1312             if (mOkButton.isEnabled()) {
1313                 mOkButton.performClick();
1314             }
1315         }
1316         return false;   // always return false to grant that the software keyboard is hidden anyway
1317     }
1318
1319
1320     private abstract static class RightDrawableOnTouchListener implements OnTouchListener  {
1321
1322         private int fuzz = 75;
1323
1324         /**
1325          * {@inheritDoc}
1326          */
1327         @Override
1328         public boolean onTouch(View view, MotionEvent event) {
1329             Drawable rightDrawable = null;
1330             if (view instanceof TextView) {
1331                 Drawable[] drawables = ((TextView)view).getCompoundDrawables();
1332                 if (drawables.length > 2) {
1333                     rightDrawable = drawables[2];
1334                 }
1335             }
1336             if (rightDrawable != null) {
1337                 final int x = (int) event.getX();
1338                 final int y = (int) event.getY();
1339                 final Rect bounds = rightDrawable.getBounds();
1340                 if (x >= (view.getRight() - bounds.width() - fuzz) && x <= (view.getRight() - view.getPaddingRight() + fuzz)
1341                     && y >= (view.getPaddingTop() - fuzz) && y <= (view.getHeight() - view.getPaddingBottom()) + fuzz) {
1342
1343                     return onDrawableTouch(event);
1344                 }
1345             }
1346             return false;
1347         }
1348
1349         public abstract boolean onDrawableTouch(final MotionEvent event);
1350     }
1351
1352 }