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.Log_OC;
  22 import com.owncloud.android.ui.dialog.SslValidatorDialog;
  23 import com.owncloud.android.ui.dialog.SslValidatorDialog.OnSslValidatorListener;
  24 import com.owncloud.android.utils.OwnCloudVersion;
  25 import com.owncloud.android.network.OwnCloudClientUtils;
  26 import com.owncloud.android.operations.OwnCloudServerCheckOperation;
  27 import com.owncloud.android.operations.ExistenceCheckOperation;
  28 import com.owncloud.android.operations.OAuth2GetAccessToken;
  29 import com.owncloud.android.operations.OnRemoteOperationListener;
  30 import com.owncloud.android.operations.RemoteOperation;
  31 import com.owncloud.android.operations.RemoteOperationResult;
  32 import com.owncloud.android.operations.RemoteOperationResult.ResultCode;
  33
  34 import android.accounts.Account;
  35 import android.accounts.AccountAuthenticatorActivity;
  36 import android.accounts.AccountManager;
  37 import android.app.AlertDialog;
  38 import android.app.Dialog;
  39 import android.app.ProgressDialog;
  40 import android.content.ContentResolver;
  41 import android.content.DialogInterface;
  42 import android.content.Intent;
  43 import android.content.SharedPreferences;
  44 import android.graphics.Rect;
  45 import android.graphics.drawable.Drawable;
  46 import android.net.Uri;
  47 import android.os.Bundle;
  48 import android.os.Handler;
  49 import android.preference.PreferenceManager;
  50 import android.text.Editable;
  51 import android.text.InputType;
  52 import android.text.TextWatcher;
  53 import android.view.KeyEvent;
  54 import android.view.MotionEvent;
  55 import android.view.View;
  56 import android.view.View.OnFocusChangeListener;
  57 import android.view.View.OnTouchListener;
  58 import android.view.Window;
  59 import android.view.inputmethod.EditorInfo;
  60 import android.widget.CheckBox;
  61 import android.widget.EditText;
  62 import android.widget.Button;
  63 import android.widget.ImageButton;
  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     public static final String EXTRA_ENFORCED_UPDATE = "ENFORCE_UPDATE";
  88
  89     private static final String KEY_HOST_URL_TEXT = "HOST_URL_TEXT";
  90     private static final String KEY_OC_VERSION = "OC_VERSION";
  91     private static final String KEY_ACCOUNT = "ACCOUNT";
  92     private static final String KEY_SERVER_VALID = "SERVER_VALID";
  93     private static final String KEY_SERVER_CHECKED = "SERVER_CHECKED";
  94     private static final String KEY_SERVER_CHECK_IN_PROGRESS = "SERVER_CHECK_IN_PROGRESS";
  95     private static final String KEY_SERVER_STATUS_TEXT = "SERVER_STATUS_TEXT";
  96     private static final String KEY_SERVER_STATUS_ICON = "SERVER_STATUS_ICON";
  97     private static final String KEY_IS_SSL_CONN = "IS_SSL_CONN";
  98     private static final String KEY_PASSWORD_VISIBLE = "PASSWORD_VISIBLE";
  99     private static final String KEY_AUTH_STATUS_TEXT = "AUTH_STATUS_TEXT";
 100     private static final String KEY_AUTH_STATUS_ICON = "AUTH_STATUS_ICON";
 101     private static final String KEY_REFRESH_BUTTON_ENABLED = "KEY_REFRESH_BUTTON_ENABLED";
 102
 103     private static final String OAUTH_MODE_ON = "on";
 104     private static final String OAUTH_MODE_OFF = "off";
 105     private static final String OAUTH_MODE_OPTIONAL = "optional";
 106
 107     private static final int DIALOG_LOGIN_PROGRESS = 0;
 108     private static final int DIALOG_SSL_VALIDATOR = 1;
 109     private static final int DIALOG_CERT_NOT_SAVED = 2;
 110     private static final int DIALOG_OAUTH2_LOGIN_PROGRESS = 3;
 111
 112     public static final byte ACTION_CREATE = 0;
 113     public static final byte ACTION_UPDATE_TOKEN = 1;
 114
 115     private String mHostBaseUrl;
 116     private OwnCloudVersion mDiscoveredVersion;
 117
 118     private int mServerStatusText, mServerStatusIcon;
 119     private boolean mServerIsChecked, mServerIsValid, mIsSslConn;
 120     private int mAuthStatusText, mAuthStatusIcon;
 121
 122     private final Handler mHandler = new Handler();
 123     private Thread mOperationThread;
 124     private OwnCloudServerCheckOperation mOcServerChkOperation;
 125     private ExistenceCheckOperation mAuthCheckOperation;
 126     private RemoteOperationResult mLastSslUntrustedServerResult;
 127
 128     private Uri mNewCapturedUriFromOAuth2Redirection;
 129
 130     private AccountManager mAccountMgr;
 131     private boolean mJustCreated;
 132     private byte mAction;
 133     private Account mAccount;
 134
 135     private EditText mHostUrlInput;
 136     private ImageButton mRefreshButton;
 137     private EditText mUsernameInput;
 138     private EditText mPasswordInput;
 139     private CheckBox mOAuth2Check;
 140     private String mOAuthAccessToken;
 141     private View mOkButton;
 142     private TextView mAuthStatusLayout;
 143
 144     private TextView mOAuthAuthEndpointText;
 145     private TextView mOAuthTokenEndpointText;
 146
 147     private boolean mRefreshButtonEnabled;
 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         mRefreshButton = (ImageButton) findViewById(R.id.refeshButton);
 164         mUsernameInput = (EditText) findViewById(R.id.account_username);
 165         mPasswordInput = (EditText) findViewById(R.id.account_password);
 166         mOAuthAuthEndpointText = (TextView)findViewById(R.id.oAuthEntryPoint_1);
 167         mOAuthTokenEndpointText = (TextView)findViewById(R.id.oAuthEntryPoint_2);
 168         mOAuth2Check = (CheckBox) findViewById(R.id.oauth_onOff_check);
 169         mOkButton = findViewById(R.id.buttonOK);
 170         mAuthStatusLayout = (TextView) findViewById(R.id.auth_status_text);
 171
 172         /// complete label for 'register account' button
 173         Button b = (Button) findViewById(R.id.account_register);
 174         if (b != null) {
 175             b.setText(String.format(getString(R.string.auth_register), getString(R.string.app_name)));
 176         }
 177
 178         /// initialization
 179         mAccountMgr = AccountManager.get(this);
 180         mNewCapturedUriFromOAuth2Redirection = null;
 181         mAction = getIntent().getByteExtra(EXTRA_ACTION, ACTION_CREATE);
 182         mAccount = null;
 183         mHostBaseUrl = "";
 184         boolean refreshButtonEnabled = false;
 185
 186         if (savedInstanceState == null) {
 187             /// connection state and info
 188             mServerStatusText = mServerStatusIcon = 0;
 189             mServerIsValid = false;
 190             mServerIsChecked = false;
 191             mIsSslConn = false;
 192             mAuthStatusText = mAuthStatusIcon = 0;
 193
 194             /// retrieve extras from intent
 195             String tokenType = getIntent().getExtras().getString(AccountAuthenticator.KEY_AUTH_TOKEN_TYPE);
 196             boolean oAuthRequired = AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN.equals(tokenType) || OAUTH_MODE_ON.equals(getString(R.string.oauth2_mode));
 197
 198             mAccount = getIntent().getExtras().getParcelable(EXTRA_ACCOUNT);
 199             if (mAccount != null) {
 200                 String ocVersion = mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_OC_VERSION);
 201                 if (ocVersion != null) {
 202                     mDiscoveredVersion = new OwnCloudVersion(ocVersion);
 203                 }
 204                 mHostBaseUrl = normalizeUrl(mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_OC_BASE_URL));
 205                 mHostUrlInput.setText(mHostBaseUrl);
 206                 String userName = mAccount.name.substring(0, mAccount.name.lastIndexOf('@'));
 207                 mUsernameInput.setText(userName);
 208                 oAuthRequired = (mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_SUPPORTS_OAUTH2) != null);
 209             }
 210             mOAuth2Check.setChecked(oAuthRequired);
 211             changeViewByOAuth2Check(oAuthRequired);
 212             mJustCreated = true;
 213
 214             if (mAction == ACTION_UPDATE_TOKEN) {
 215                 checkOcServer();
 216             }
 217
 218         } else {
 219             /// connection state and info
 220             mServerIsValid = savedInstanceState.getBoolean(KEY_SERVER_VALID);
 221             mServerIsChecked = savedInstanceState.getBoolean(KEY_SERVER_CHECKED);
 222             mServerStatusText = savedInstanceState.getInt(KEY_SERVER_STATUS_TEXT);
 223             mServerStatusIcon = savedInstanceState.getInt(KEY_SERVER_STATUS_ICON);
 224             mIsSslConn = savedInstanceState.getBoolean(KEY_IS_SSL_CONN);
 225             mAuthStatusText = savedInstanceState.getInt(KEY_AUTH_STATUS_TEXT);
 226             mAuthStatusIcon = savedInstanceState.getInt(KEY_AUTH_STATUS_ICON);
 227             if (savedInstanceState.getBoolean(KEY_PASSWORD_VISIBLE, false)) {
 228                 showPassword();
 229             }
 230
 231             /// server data
 232             String ocVersion = savedInstanceState.getString(KEY_OC_VERSION);
 233             if (ocVersion != null) {
 234                 mDiscoveredVersion = new OwnCloudVersion(ocVersion);
 235             }
 236             mHostBaseUrl = savedInstanceState.getString(KEY_HOST_URL_TEXT);
 237
 238             // account data, if updating
 239             mAccount = savedInstanceState.getParcelable(KEY_ACCOUNT);
 240
 241             // check if server check was interrupted by a configuration change
 242             if (savedInstanceState.getBoolean(KEY_SERVER_CHECK_IN_PROGRESS, false)) {
 243                 checkOcServer();
 244             }
 245
 246             // refresh button enabled
 247             refreshButtonEnabled = savedInstanceState.getBoolean(KEY_REFRESH_BUTTON_ENABLED);
 248
 249
 250         }
 251
 252         showServerStatus();
 253         showAuthStatus();
 254
 255         if (mAction == ACTION_UPDATE_TOKEN) {
 256             /// lock things that should not change
 257             mHostUrlInput.setEnabled(false);
 258             mHostUrlInput.setFocusable(false);
 259             mUsernameInput.setEnabled(false);
 260             mUsernameInput.setFocusable(false);
 261             mOAuth2Check.setVisibility(View.GONE);
 262         }
 263
 264         //if (mServerIsChecked && !mServerIsValid && mRefreshButtonEnabled) showRefreshButton();
 265         if (mServerIsChecked && !mServerIsValid && refreshButtonEnabled) showRefreshButton();
 266         mOkButton.setEnabled(mServerIsValid); // state not automatically recovered in configuration changes
 267
 268         if (!OAUTH_MODE_OPTIONAL.equals(getString(R.string.oauth2_mode))) {
 269             mOAuth2Check.setVisibility(View.GONE);
 270         }
 271
 272         mPasswordInput.setText("");     // clean password to avoid social hacking (disadvantage: password in removed if the device is turned aside)
 273
 274         /// bind view elements to listeners
 275         mHostUrlInput.setOnFocusChangeListener(this);
 276         mHostUrlInput.addTextChangedListener(new TextWatcher() {
 277
 278             @Override
 279             public void afterTextChanged(Editable s) {
 280                 if (!mHostBaseUrl.equals(normalizeUrl(mHostUrlInput.getText().toString()))) {
 281                     mOkButton.setEnabled(false);
 282                 }
 283             }
 284
 285             @Override
 286             public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
 287
 288             @Override
 289             public void onTextChanged(CharSequence s, int start, int before, int count) {}
 290
 291         });
 292         mPasswordInput.setOnFocusChangeListener(this);
 293         mPasswordInput.setImeOptions(EditorInfo.IME_ACTION_DONE);
 294         mPasswordInput.setOnEditorActionListener(this);
 295         mPasswordInput.setOnTouchListener(new RightDrawableOnTouchListener() {
 296             @Override
 297             public boolean onDrawableTouch(final MotionEvent event) {
 298                 if (event.getAction() == MotionEvent.ACTION_UP) {
 299                     AuthenticatorActivity.this.onViewPasswordClick();
 300                 }
 301                 return true;
 302             }
 303         });
 304     }
 305
 306     /**
 307      * Saves relevant state before {@link #onPause()}
 308      *
 309      * Do NOT save {@link #mNewCapturedUriFromOAuth2Redirection}; it keeps a temporal flag, intended to defer the
 310      * processing of the redirection caught in {@link #onNewIntent(Intent)} until {@link #onResume()}
 311      *
 312      * See {@link #loadSavedInstanceState(Bundle)}
 313      */
 314     @Override
 315     protected void onSaveInstanceState(Bundle outState) {
 316         super.onSaveInstanceState(outState);
 317
 318         /// connection state and info
 319         outState.putInt(KEY_SERVER_STATUS_TEXT, mServerStatusText);
 320         outState.putInt(KEY_SERVER_STATUS_ICON, mServerStatusIcon);
 321         outState.putBoolean(KEY_SERVER_VALID, mServerIsValid);
 322         outState.putBoolean(KEY_SERVER_CHECKED, mServerIsChecked);
 323         outState.putBoolean(KEY_SERVER_CHECK_IN_PROGRESS, (!mServerIsValid && mOcServerChkOperation != null));
 324         outState.putBoolean(KEY_IS_SSL_CONN, mIsSslConn);
 325         outState.putBoolean(KEY_PASSWORD_VISIBLE, isPasswordVisible());
 326         outState.putInt(KEY_AUTH_STATUS_ICON, mAuthStatusIcon);
 327         outState.putInt(KEY_AUTH_STATUS_TEXT, mAuthStatusText);
 328
 329         /// server data
 330         if (mDiscoveredVersion != null) {
 331             outState.putString(KEY_OC_VERSION, mDiscoveredVersion.toString());
 332         }
 333         outState.putString(KEY_HOST_URL_TEXT, mHostBaseUrl);
 334
 335         /// account data, if updating
 336         if (mAccount != null) {
 337             outState.putParcelable(KEY_ACCOUNT, mAccount);
 338         }
 339
 340         // refresh button enabled
 341         //outState.putBoolean(KEY_REFRESH_BUTTON_ENABLED, mRefreshButtonEnabled);
 342         outState.putBoolean(KEY_REFRESH_BUTTON_ENABLED, (mRefreshButton.getVisibility() == View.VISIBLE));
 343
 344     }
 345
 346
 347     /**
 348      * The redirection triggered by the OAuth authentication server as response to the GET AUTHORIZATION request
 349      * is caught here.
 350      *
 351      * To make this possible, this activity needs to be qualified with android:launchMode = "singleTask" in the
 352      * AndroidManifest.xml file.
 353      */
 354     @Override
 355     protected void onNewIntent (Intent intent) {
 356         Log_OC.d(TAG, "onNewIntent()");
 357         Uri data = intent.getData();
 358         if (data != null && data.toString().startsWith(getString(R.string.oauth2_redirect_uri))) {
 359             mNewCapturedUriFromOAuth2Redirection = data;
 360         }
 361     }
 362
 363
 364     /**
 365      * The redirection triggered by the OAuth authentication server as response to the GET AUTHORIZATION, and
 366      * deferred in {@link #onNewIntent(Intent)}, is processed here.
 367      */
 368     @Override
 369     protected void onResume() {
 370         super.onResume();
 371         // the state of mOAuth2Check is automatically recovered between configuration changes, but not before onCreate() finishes; so keep the next lines here
 372         changeViewByOAuth2Check(mOAuth2Check.isChecked());
 373         if (mAction == ACTION_UPDATE_TOKEN && mJustCreated && getIntent().getBooleanExtra(EXTRA_ENFORCED_UPDATE, false)) {
 374             if (mOAuth2Check.isChecked())
 375                 Toast.makeText(this, R.string.auth_expired_oauth_token_toast, Toast.LENGTH_LONG).show();
 376             else
 377                 Toast.makeText(this, R.string.auth_expired_basic_auth_toast, Toast.LENGTH_LONG).show();
 378         }
 379
 380         if (mNewCapturedUriFromOAuth2Redirection != null) {
 381             getOAuth2AccessTokenFromCapturedRedirection();
 382         }
 383
 384         mJustCreated = false;
 385     }
 386
 387
 388     /**
 389      * Parses the redirection with the response to the GET AUTHORIZATION request to the
 390      * oAuth server and requests for the access token (GET ACCESS TOKEN)
 391      */
 392     private void getOAuth2AccessTokenFromCapturedRedirection() {
 393         /// Parse data from OAuth redirection
 394         String queryParameters = mNewCapturedUriFromOAuth2Redirection.getQuery();
 395         mNewCapturedUriFromOAuth2Redirection = null;
 396
 397         /// Showing the dialog with instructions for the user.
 398         showDialog(DIALOG_OAUTH2_LOGIN_PROGRESS);
 399
 400         /// GET ACCESS TOKEN to the oAuth server
 401         RemoteOperation operation = new OAuth2GetAccessToken(   getString(R.string.oauth2_client_id),
 402                 getString(R.string.oauth2_redirect_uri),
 403                 getString(R.string.oauth2_grant_type),
 404                 queryParameters);
 405         //WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(getString(R.string.oauth2_url_endpoint_access)), getApplicationContext());
 406         WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mOAuthTokenEndpointText.getText().toString().trim()), getApplicationContext());
 407         operation.execute(client, this, mHandler);
 408     }
 409
 410
 411
 412     /**
 413      * Handles the change of focus on the text inputs for the server URL and the password
 414      */
 415     public void onFocusChange(View view, boolean hasFocus) {
 416         if (view.getId() == R.id.hostUrlInput) {
 417             if (!hasFocus) {
 418                 onUrlInputFocusLost((TextView) view);
 419                 if (!mServerIsValid) {
 420                     showRefreshButton();
 421                 }
 422             }
 423             else {
 424                 hideRefreshButton();
 425             }
 426
 427         } else if (view.getId() == R.id.account_password) {
 428             onPasswordFocusChanged((TextView) view, hasFocus);
 429         }
 430     }
 431
 432
 433     /**
 434      * Handles changes in focus on the text input for the server URL.
 435      *
 436      * IMPORTANT ENTRY POINT 2: When (!hasFocus), user wrote the server URL and changed to
 437      * other field. The operation to check the existence of the server in the entered URL is
 438      * started.
 439      *
 440      * When hasFocus:    user 'comes back' to write again the server URL.
 441      *
 442      * @param hostInput     TextView with the URL input field receiving the change of focus.
 443      */
 444     private void onUrlInputFocusLost(TextView hostInput) {
 445         if (!mHostBaseUrl.equals(normalizeUrl(mHostUrlInput.getText().toString()))) {
 446             checkOcServer();
 447         } else {
 448             mOkButton.setEnabled(mServerIsValid);
 449         }
 450     }
 451
 452
 453     private void checkOcServer() {
 454         String uri = trimUrlWebdav(mHostUrlInput.getText().toString().trim());
 455         mServerIsValid = false;
 456         mServerIsChecked = false;
 457         mOkButton.setEnabled(false);
 458         mDiscoveredVersion = null;
 459         hideRefreshButton();
 460         if (uri.length() != 0) {
 461             mServerStatusText = R.string.auth_testing_connection;
 462             mServerStatusIcon = R.drawable.progress_small;
 463             showServerStatus();
 464             mOcServerChkOperation = new  OwnCloudServerCheckOperation(uri, this);
 465             WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(uri), this);
 466             mOperationThread = mOcServerChkOperation.execute(client, this, mHandler);
 467         } else {
 468             mServerStatusText = 0;
 469             mServerStatusIcon = 0;
 470             showServerStatus();
 471         }
 472     }
 473
 474
 475     /**
 476      * Handles changes in focus on the text input for the password (basic authorization).
 477      *
 478      * When (hasFocus), the button to toggle password visibility is shown.
 479      *
 480      * When (!hasFocus), the button is made invisible and the password is hidden.
 481      *
 482      * @param passwordInput    TextView with the password input field receiving the change of focus.
 483      * @param hasFocus          'True' if focus is received, 'false' if is lost
 484      */
 485     private void onPasswordFocusChanged(TextView passwordInput, boolean hasFocus) {
 486         if (hasFocus) {
 487             showViewPasswordButton();
 488         } else {
 489             hidePassword();
 490             hidePasswordButton();
 491         }
 492     }
 493
 494
 495     private void showViewPasswordButton() {
 496         //int drawable = android.R.drawable.ic_menu_view;
 497         int drawable = R.drawable.ic_view;
 498         if (isPasswordVisible()) {
 499             //drawable = android.R.drawable.ic_secure;
 500             drawable = R.drawable.ic_hide;
 501         }
 502         mPasswordInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, drawable, 0);
 503     }
 504
 505     private boolean isPasswordVisible() {
 506         return ((mPasswordInput.getInputType() & InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD) == InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
 507     }
 508
 509     private void hidePasswordButton() {
 510         mPasswordInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
 511     }
 512
 513     private void showPassword() {
 514         mPasswordInput.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
 515         showViewPasswordButton();
 516     }
 517
 518     private void hidePassword() {
 519         mPasswordInput.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
 520         showViewPasswordButton();
 521     }
 522
 523
 524     /**
 525      * Cancels the authenticator activity
 526      *
 527      * IMPORTANT ENTRY POINT 3: Never underestimate the importance of cancellation
 528      *
 529      * This method is bound in the layout/acceoun_setup.xml resource file.
 530      *
 531      * @param view      Cancel button
 532      */
 533     public void onCancelClick(View view) {
 534         setResult(RESULT_CANCELED);     // TODO review how is this related to AccountAuthenticator (debugging)
 535         finish();
 536     }
 537
 538
 539
 540     /**
 541      * Checks the credentials of the user in the root of the ownCloud server
 542      * before creating a new local account.
 543      *
 544      * For basic authorization, a check of existence of the root folder is
 545      * performed.
 546      *
 547      * For OAuth, starts the flow to get an access token; the credentials test
 548      * is postponed until it is available.
 549      *
 550      * IMPORTANT ENTRY POINT 4
 551      *
 552      * @param view      OK button
 553      */
 554     public void onOkClick(View view) {
 555         // this check should be unnecessary
 556         if (mDiscoveredVersion == null || !mDiscoveredVersion.isVersionValid()  || mHostBaseUrl == null || mHostBaseUrl.length() == 0) {
 557             mServerStatusIcon = R.drawable.common_error;
 558             mServerStatusText = R.string.auth_wtf_reenter_URL;
 559             showServerStatus();
 560             mOkButton.setEnabled(false);
 561             Log_OC.wtf(TAG,  "The user was allowed to click 'connect' to an unchecked server!!");
 562             return;
 563         }
 564
 565         if (mOAuth2Check.isChecked()) {
 566             startOauthorization();
 567
 568         } else {
 569             checkBasicAuthorization();
 570         }
 571     }
 572
 573
 574     /**
 575      * Tests the credentials entered by the user performing a check of existence on
 576      * the root folder of the ownCloud server.
 577      */
 578     private void checkBasicAuthorization() {
 579         /// get the path to the root folder through WebDAV from the version server
 580         String webdav_path = AccountUtils.getWebdavPath(mDiscoveredVersion, false);
 581
 582         /// get basic credentials entered by user
 583         String username = mUsernameInput.getText().toString();
 584         String password = mPasswordInput.getText().toString();
 585
 586         /// be gentle with the user
 587         showDialog(DIALOG_LOGIN_PROGRESS);
 588
 589         /// test credentials accessing the root folder
 590         mAuthCheckOperation = new  ExistenceCheckOperation("", this, false);
 591         WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mHostBaseUrl + webdav_path), this);
 592         client.setBasicCredentials(username, password);
 593         mOperationThread = mAuthCheckOperation.execute(client, this, mHandler);
 594     }
 595
 596
 597     /**
 598      * Starts the OAuth 'grant type' flow to get an access token, with
 599      * a GET AUTHORIZATION request to the BUILT-IN authorization server.
 600      */
 601     private void startOauthorization() {
 602         // be gentle with the user
 603         mAuthStatusIcon = R.drawable.progress_small;
 604         mAuthStatusText = R.string.oauth_login_connection;
 605         showAuthStatus();
 606
 607         // GET AUTHORIZATION request
 608         //Uri uri = Uri.parse(getString(R.string.oauth2_url_endpoint_auth));
 609         Uri uri = Uri.parse(mOAuthAuthEndpointText.getText().toString().trim());
 610         Uri.Builder uriBuilder = uri.buildUpon();
 611         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_RESPONSE_TYPE, getString(R.string.oauth2_response_type));
 612         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_REDIRECT_URI, getString(R.string.oauth2_redirect_uri));
 613         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_CLIENT_ID, getString(R.string.oauth2_client_id));
 614         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_SCOPE, getString(R.string.oauth2_scope));
 615         //uriBuilder.appendQueryParameter(OAuth2Constants.KEY_STATE, whateverwewant);
 616         uri = uriBuilder.build();
 617         Log_OC.d(TAG, "Starting browser to view " + uri.toString());
 618         Intent i = new Intent(Intent.ACTION_VIEW, uri);
 619         startActivity(i);
 620     }
 621
 622
 623     /**
 624      * Callback method invoked when a RemoteOperation executed by this Activity finishes.
 625      *
 626      * Dispatches the operation flow to the right method.
 627      */
 628     @Override
 629     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 630
 631         if (operation instanceof OwnCloudServerCheckOperation) {
 632             onOcServerCheckFinish((OwnCloudServerCheckOperation) operation, result);
 633
 634         } else if (operation instanceof OAuth2GetAccessToken) {
 635             onGetOAuthAccessTokenFinish((OAuth2GetAccessToken)operation, result);
 636
 637         } else if (operation instanceof ExistenceCheckOperation)  {
 638             onAuthorizationCheckFinish((ExistenceCheckOperation)operation, result);
 639
 640         }
 641     }
 642
 643
 644     /**
 645      * Processes the result of the server check performed when the user finishes the enter of the
 646      * server URL.
 647      *
 648      * @param operation     Server check performed.
 649      * @param result        Result of the check.
 650      */
 651     private void onOcServerCheckFinish(OwnCloudServerCheckOperation operation, RemoteOperationResult result) {
 652         if (operation.equals(mOcServerChkOperation)) {
 653             /// save result state
 654             mServerIsChecked = true;
 655             mServerIsValid = result.isSuccess();
 656             mIsSslConn = (result.getCode() == ResultCode.OK_SSL);
 657             mOcServerChkOperation = null;
 658
 659             /// update status icon and text
 660             if (mServerIsValid) {
 661                 hideRefreshButton();
 662             } else {
 663                 showRefreshButton();
 664             }
 665             updateServerStatusIconAndText(result);
 666             showServerStatus();
 667
 668             /// very special case (TODO: move to a common place for all the remote operations)
 669             if (result.getCode() == ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED) {
 670                 mLastSslUntrustedServerResult = result;
 671                 showDialog(DIALOG_SSL_VALIDATOR);
 672             }
 673
 674             /// retrieve discovered version and normalize server URL
 675             mDiscoveredVersion = operation.getDiscoveredVersion();
 676             mHostBaseUrl = normalizeUrl(mHostUrlInput.getText().toString());
 677
 678             /// allow or not the user try to access the server
 679             mOkButton.setEnabled(mServerIsValid);
 680
 681         }   // else nothing ; only the last check operation is considered;
 682         // multiple can be triggered if the user amends a URL before a previous check can be triggered
 683     }
 684
 685
 686     private String normalizeUrl(String url) {
 687         if (url != null && url.length() > 0) {
 688             url = url.trim();
 689             if (!url.toLowerCase().startsWith("http://") &&
 690                     !url.toLowerCase().startsWith("https://")) {
 691                 if (mIsSslConn) {
 692                     url = "https://" + url;
 693                 } else {
 694                     url = "http://" + url;
 695                 }
 696             }
 697
 698             // OC-208: Add suffix remote.php/webdav to normalize (OC-34)
 699             url = trimUrlWebdav(url);
 700
 701             if (url.endsWith("/")) {
 702                 url = url.substring(0, url.length() - 1);
 703             }
 704
 705         }
 706         Log_OC.d(TAG, "URL Normalize " + url);
 707         return (url != null ? url : "");
 708     }
 709
 710
 711     private String trimUrlWebdav(String url){
 712         if(url.toLowerCase().endsWith(AccountUtils.WEBDAV_PATH_4_0)){
 713             url = url.substring(0, url.length() - AccountUtils.WEBDAV_PATH_4_0.length());
 714         } else if(url.toLowerCase().endsWith(AccountUtils.WEBDAV_PATH_2_0)){
 715             url = url.substring(0, url.length() - AccountUtils.WEBDAV_PATH_2_0.length());
 716         } else if (url.toLowerCase().endsWith(AccountUtils.WEBDAV_PATH_1_2)){
 717             url = url.substring(0, url.length() - AccountUtils.WEBDAV_PATH_1_2.length());
 718         }
 719         return (url != null ? url : "");
 720     }
 721
 722
 723     /**
 724      * Chooses the right icon and text to show to the user for the received operation result.
 725      *
 726      * @param result    Result of a remote operation performed in this activity
 727      */
 728     private void updateServerStatusIconAndText(RemoteOperationResult result) {
 729         mServerStatusIcon = R.drawable.common_error;    // the most common case in the switch below
 730
 731         switch (result.getCode()) {
 732         case OK_SSL:
 733             mServerStatusIcon = android.R.drawable.ic_secure;
 734             mServerStatusText = R.string.auth_secure_connection;
 735             break;
 736
 737         case OK_NO_SSL:
 738         case OK:
 739             if (mHostUrlInput.getText().toString().trim().toLowerCase().startsWith("http://") ) {
 740                 mServerStatusText = R.string.auth_connection_established;
 741                 mServerStatusIcon = R.drawable.ic_ok;
 742             } else {
 743                 mServerStatusText = R.string.auth_nossl_plain_ok_title;
 744                 mServerStatusIcon = android.R.drawable.ic_partial_secure;
 745             }
 746             break;
 747
 748         case NO_NETWORK_CONNECTION:
 749             mServerStatusIcon = R.drawable.no_network;
 750             mServerStatusText = R.string.auth_no_net_conn_title;
 751             break;
 752
 753         case SSL_RECOVERABLE_PEER_UNVERIFIED:
 754             mServerStatusText = R.string.auth_ssl_unverified_server_title;
 755             break;
 756         case BAD_OC_VERSION:
 757             mServerStatusText = R.string.auth_bad_oc_version_title;
 758             break;
 759         case WRONG_CONNECTION:
 760             mServerStatusText = R.string.auth_wrong_connection_title;
 761             break;
 762         case TIMEOUT:
 763             mServerStatusText = R.string.auth_timeout_title;
 764             break;
 765         case INCORRECT_ADDRESS:
 766             mServerStatusText = R.string.auth_incorrect_address_title;
 767             break;
 768         case SSL_ERROR:
 769             mServerStatusText = R.string.auth_ssl_general_error_title;
 770             break;
 771         case UNAUTHORIZED:
 772             mServerStatusText = R.string.auth_unauthorized;
 773             break;
 774         case HOST_NOT_AVAILABLE:
 775             mServerStatusText = R.string.auth_unknown_host_title;
 776             break;
 777         case INSTANCE_NOT_CONFIGURED:
 778             mServerStatusText = R.string.auth_not_configured_title;
 779             break;
 780         case FILE_NOT_FOUND:
 781             mServerStatusText = R.string.auth_incorrect_path_title;
 782             break;
 783         case OAUTH2_ERROR:
 784             mServerStatusText = R.string.auth_oauth_error;
 785             break;
 786         case OAUTH2_ERROR_ACCESS_DENIED:
 787             mServerStatusText = R.string.auth_oauth_error_access_denied;
 788             break;
 789         case UNHANDLED_HTTP_CODE:
 790         case UNKNOWN_ERROR:
 791             mServerStatusText = R.string.auth_unknown_error_title;
 792             break;
 793         default:
 794             mServerStatusText = 0;
 795             mServerStatusIcon = 0;
 796         }
 797     }
 798
 799
 800     /**
 801      * Chooses the right icon and text to show to the user for the received operation result.
 802      *
 803      * @param result    Result of a remote operation performed in this activity
 804      */
 805     private void updateAuthStatusIconAndText(RemoteOperationResult result) {
 806         mAuthStatusIcon = R.drawable.common_error;    // the most common case in the switch below
 807
 808         switch (result.getCode()) {
 809         case OK_SSL:
 810             mAuthStatusIcon = android.R.drawable.ic_secure;
 811             mAuthStatusText = R.string.auth_secure_connection;
 812             break;
 813
 814         case OK_NO_SSL:
 815         case OK:
 816             if (mHostUrlInput.getText().toString().trim().toLowerCase().startsWith("http://") ) {
 817                 mAuthStatusText = R.string.auth_connection_established;
 818                 mAuthStatusIcon = R.drawable.ic_ok;
 819             } else {
 820                 mAuthStatusText = R.string.auth_nossl_plain_ok_title;
 821                 mAuthStatusIcon = android.R.drawable.ic_partial_secure;
 822             }
 823             break;
 824
 825         case NO_NETWORK_CONNECTION:
 826             mAuthStatusIcon = R.drawable.no_network;
 827             mAuthStatusText = R.string.auth_no_net_conn_title;
 828             break;
 829
 830         case SSL_RECOVERABLE_PEER_UNVERIFIED:
 831             mAuthStatusText = R.string.auth_ssl_unverified_server_title;
 832             break;
 833         case BAD_OC_VERSION:
 834             mAuthStatusText = R.string.auth_bad_oc_version_title;
 835             break;
 836         case WRONG_CONNECTION:
 837             mAuthStatusText = R.string.auth_wrong_connection_title;
 838             break;
 839         case TIMEOUT:
 840             mAuthStatusText = R.string.auth_timeout_title;
 841             break;
 842         case INCORRECT_ADDRESS:
 843             mAuthStatusText = R.string.auth_incorrect_address_title;
 844             break;
 845         case SSL_ERROR:
 846             mAuthStatusText = R.string.auth_ssl_general_error_title;
 847             break;
 848         case UNAUTHORIZED:
 849             mAuthStatusText = R.string.auth_unauthorized;
 850             break;
 851         case HOST_NOT_AVAILABLE:
 852             mAuthStatusText = R.string.auth_unknown_host_title;
 853             break;
 854         case INSTANCE_NOT_CONFIGURED:
 855             mAuthStatusText = R.string.auth_not_configured_title;
 856             break;
 857         case FILE_NOT_FOUND:
 858             mAuthStatusText = R.string.auth_incorrect_path_title;
 859             break;
 860         case OAUTH2_ERROR:
 861             mAuthStatusText = R.string.auth_oauth_error;
 862             break;
 863         case OAUTH2_ERROR_ACCESS_DENIED:
 864             mAuthStatusText = R.string.auth_oauth_error_access_denied;
 865             break;
 866         case UNHANDLED_HTTP_CODE:
 867         case UNKNOWN_ERROR:
 868             mAuthStatusText = R.string.auth_unknown_error_title;
 869             break;
 870         default:
 871             mAuthStatusText = 0;
 872             mAuthStatusIcon = 0;
 873         }
 874     }
 875
 876
 877     /**
 878      * Processes the result of the request for and access token send
 879      * to an OAuth authorization server.
 880      *
 881      * @param operation     Operation performed requesting the access token.
 882      * @param result        Result of the operation.
 883      */
 884     private void onGetOAuthAccessTokenFinish(OAuth2GetAccessToken operation, RemoteOperationResult result) {
 885         try {
 886             dismissDialog(DIALOG_OAUTH2_LOGIN_PROGRESS);
 887         } catch (IllegalArgumentException e) {
 888             // NOTHING TO DO ; can't find out what situation that leads to the exception in this code, but user logs signal that it happens
 889         }
 890
 891         String webdav_path = AccountUtils.getWebdavPath(mDiscoveredVersion, true);
 892         if (result.isSuccess() && webdav_path != null) {
 893             /// be gentle with the user
 894             showDialog(DIALOG_LOGIN_PROGRESS);
 895
 896             /// time to test the retrieved access token on the ownCloud server
 897             mOAuthAccessToken = ((OAuth2GetAccessToken)operation).getResultTokenMap().get(OAuth2Constants.KEY_ACCESS_TOKEN);
 898             Log_OC.d(TAG, "Got ACCESS TOKEN: " + mOAuthAccessToken);
 899             mAuthCheckOperation = new ExistenceCheckOperation("", this, false);
 900             WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mHostBaseUrl + webdav_path), this);
 901             client.setBearerCredentials(mOAuthAccessToken);
 902             mAuthCheckOperation.execute(client, this, mHandler);
 903
 904         } else {
 905             updateAuthStatusIconAndText(result);
 906             showAuthStatus();
 907             Log_OC.d(TAG, "Access failed: " + result.getLogMessage());
 908         }
 909     }
 910
 911
 912     /**
 913      * Processes the result of the access check performed to try the user credentials.
 914      *
 915      * Creates a new account through the AccountManager.
 916      *
 917      * @param operation     Access check performed.
 918      * @param result        Result of the operation.
 919      */
 920     private void onAuthorizationCheckFinish(ExistenceCheckOperation operation, RemoteOperationResult result) {
 921         try {
 922             dismissDialog(DIALOG_LOGIN_PROGRESS);
 923         } catch (IllegalArgumentException e) {
 924             // NOTHING TO DO ; can't find out what situation that leads to the exception in this code, but user logs signal that it happens
 925         }
 926
 927         if (result.isSuccess()) {
 928             Log_OC.d(TAG, "Successful access - time to save the account");
 929
 930             if (mAction == ACTION_CREATE) {
 931                 createAccount();
 932
 933             } else {
 934                 updateToken();
 935             }
 936
 937             finish();
 938
 939         } else if (result.isServerFail() || result.isException()) {
 940             /// if server fail or exception in authorization, the UI is updated as when a server check failed
 941             mServerIsChecked = true;
 942             mServerIsValid = false;
 943             mIsSslConn = false;
 944             mOcServerChkOperation = null;
 945             mDiscoveredVersion = null;
 946             mHostBaseUrl = normalizeUrl(mHostUrlInput.getText().toString());
 947
 948             // update status icon and text
 949             updateServerStatusIconAndText(result);
 950             showServerStatus();
 951             mAuthStatusIcon = 0;
 952             mAuthStatusText = 0;
 953             showAuthStatus();
 954
 955             // update input controls state
 956             showRefreshButton();
 957             mOkButton.setEnabled(false);
 958
 959             // very special case (TODO: move to a common place for all the remote operations) (dangerous here?)
 960             if (result.getCode() == ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED) {
 961                 mLastSslUntrustedServerResult = result;
 962                 showDialog(DIALOG_SSL_VALIDATOR);
 963             }
 964
 965         } else {    // authorization fail due to client side - probably wrong credentials
 966             updateAuthStatusIconAndText(result);
 967             showAuthStatus();
 968             Log_OC.d(TAG, "Access failed: " + result.getLogMessage());
 969         }
 970     }
 971
 972
 973     /**
 974      * Sets the proper response to get that the Account Authenticator that started this activity saves
 975      * a new authorization token for mAccount.
 976      */
 977     private void updateToken() {
 978         Bundle response = new Bundle();
 979         response.putString(AccountManager.KEY_ACCOUNT_NAME, mAccount.name);
 980         response.putString(AccountManager.KEY_ACCOUNT_TYPE, mAccount.type);
 981         boolean isOAuth = mOAuth2Check.isChecked();
 982         if (isOAuth) {
 983             response.putString(AccountManager.KEY_AUTHTOKEN, mOAuthAccessToken);
 984             // the next line is necessary; by now, notifications are calling directly to the AuthenticatorActivity to update, without AccountManager intervention
 985             mAccountMgr.setAuthToken(mAccount, AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN, mOAuthAccessToken);
 986         } else {
 987             response.putString(AccountManager.KEY_AUTHTOKEN, mPasswordInput.getText().toString());
 988             mAccountMgr.setPassword(mAccount, mPasswordInput.getText().toString());
 989         }
 990         setAccountAuthenticatorResult(response);
 991     }
 992
 993
 994     /**
 995      * Creates a new account through the Account Authenticator that started this activity.
 996      *
 997      * This makes the account permanent.
 998      *
 999      * TODO Decide how to name the OAuth accounts
1000      */
1001     private void createAccount() {
1002         /// create and save new ownCloud account
1003         boolean isOAuth = mOAuth2Check.isChecked();
1004
1005         Uri uri = Uri.parse(mHostBaseUrl);
1006         String username = mUsernameInput.getText().toString().trim();
1007         if (isOAuth) {
1008             username = "OAuth_user" + (new java.util.Random(System.currentTimeMillis())).nextLong();
1009         }
1010         String accountName = username + "@" + uri.getHost();
1011         if (uri.getPort() >= 0) {
1012             accountName += ":" + uri.getPort();
1013         }
1014         mAccount = new Account(accountName, AccountAuthenticator.ACCOUNT_TYPE);
1015         if (isOAuth) {
1016             mAccountMgr.addAccountExplicitly(mAccount, "", null);  // with our implementation, the password is never input in the app
1017         } else {
1018             mAccountMgr.addAccountExplicitly(mAccount, mPasswordInput.getText().toString(), null);
1019         }
1020
1021         /// add the new account as default in preferences, if there is none already
1022         Account defaultAccount = AccountUtils.getCurrentOwnCloudAccount(this);
1023         if (defaultAccount == null) {
1024             SharedPreferences.Editor editor = PreferenceManager
1025                     .getDefaultSharedPreferences(this).edit();
1026             editor.putString("select_oc_account", accountName);
1027             editor.commit();
1028         }
1029
1030         /// prepare result to return to the Authenticator
1031         //  TODO check again what the Authenticator makes with it; probably has the same effect as addAccountExplicitly, but it's not well done
1032         final Intent intent = new Intent();
1033         intent.putExtra(AccountManager.KEY_ACCOUNT_TYPE,    AccountAuthenticator.ACCOUNT_TYPE);
1034         intent.putExtra(AccountManager.KEY_ACCOUNT_NAME,    mAccount.name);
1035         if (!isOAuth)
1036             intent.putExtra(AccountManager.KEY_AUTHTOKEN,   AccountAuthenticator.ACCOUNT_TYPE); // TODO check this; not sure it's right; maybe
1037         intent.putExtra(AccountManager.KEY_USERDATA,        username);
1038         if (isOAuth) {
1039             mAccountMgr.setAuthToken(mAccount, AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN, mOAuthAccessToken);
1040         }
1041         /// add user data to the new account; TODO probably can be done in the last parameter addAccountExplicitly, or in KEY_USERDATA
1042         mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_OC_VERSION,    mDiscoveredVersion.toString());
1043         mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_OC_BASE_URL,   mHostBaseUrl);
1044         if (isOAuth)
1045             mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_SUPPORTS_OAUTH2, "TRUE");  // TODO this flag should be unnecessary
1046
1047         setAccountAuthenticatorResult(intent.getExtras());
1048         setResult(RESULT_OK, intent);
1049
1050         /// immediately request for the synchronization of the new account
1051         Bundle bundle = new Bundle();
1052         bundle.putBoolean(ContentResolver.SYNC_EXTRAS_MANUAL, true);
1053         ContentResolver.requestSync(mAccount, AccountAuthenticator.AUTHORITY, bundle);
1054     }
1055
1056
1057     /**
1058      * {@inheritDoc}
1059      *
1060      * Necessary to update the contents of the SSL Dialog
1061      *
1062      * TODO move to some common place for all possible untrusted SSL failures
1063      */
1064     @Override
1065     protected void onPrepareDialog(int id, Dialog dialog, Bundle args) {
1066         switch (id) {
1067         case DIALOG_LOGIN_PROGRESS:
1068         case DIALOG_CERT_NOT_SAVED:
1069         case DIALOG_OAUTH2_LOGIN_PROGRESS:
1070             break;
1071         case DIALOG_SSL_VALIDATOR: {
1072             ((SslValidatorDialog)dialog).updateResult(mLastSslUntrustedServerResult);
1073             break;
1074         }
1075         default:
1076             Log_OC.e(TAG, "Incorrect dialog called with id = " + id);
1077         }
1078     }
1079
1080
1081     /**
1082      * {@inheritDoc}
1083      */
1084     @Override
1085     protected Dialog onCreateDialog(int id) {
1086         Dialog dialog = null;
1087         switch (id) {
1088         case DIALOG_LOGIN_PROGRESS: {
1089             /// simple progress dialog
1090             ProgressDialog working_dialog = new ProgressDialog(this);
1091             working_dialog.setMessage(getResources().getString(R.string.auth_trying_to_login));
1092             working_dialog.setIndeterminate(true);
1093             working_dialog.setCancelable(true);
1094             working_dialog
1095             .setOnCancelListener(new DialogInterface.OnCancelListener() {
1096                 @Override
1097                 public void onCancel(DialogInterface dialog) {
1098                     /// TODO study if this is enough
1099                     Log_OC.i(TAG, "Login canceled");
1100                     if (mOperationThread != null) {
1101                         mOperationThread.interrupt();
1102                         finish();
1103                     }
1104                 }
1105             });
1106             dialog = working_dialog;
1107             break;
1108         }
1109         case DIALOG_OAUTH2_LOGIN_PROGRESS: {
1110             ProgressDialog working_dialog = new ProgressDialog(this);
1111             working_dialog.setMessage(String.format("Getting authorization"));
1112             working_dialog.setIndeterminate(true);
1113             working_dialog.setCancelable(true);
1114             working_dialog
1115             .setOnCancelListener(new DialogInterface.OnCancelListener() {
1116                 @Override
1117                 public void onCancel(DialogInterface dialog) {
1118                     Log_OC.i(TAG, "Login canceled");
1119                     finish();
1120                 }
1121             });
1122             dialog = working_dialog;
1123             break;
1124         }
1125         case DIALOG_SSL_VALIDATOR: {
1126             /// TODO start to use new dialog interface, at least for this (it is a FragmentDialog already)
1127             dialog = SslValidatorDialog.newInstance(this, mLastSslUntrustedServerResult, this);
1128             break;
1129         }
1130         case DIALOG_CERT_NOT_SAVED: {
1131             AlertDialog.Builder builder = new AlertDialog.Builder(this);
1132             builder.setMessage(getResources().getString(R.string.ssl_validator_not_saved));
1133             builder.setCancelable(false);
1134             builder.setPositiveButton(R.string.common_ok, new DialogInterface.OnClickListener() {
1135                 @Override
1136                 public void onClick(DialogInterface dialog, int which) {
1137                     dialog.dismiss();
1138                 };
1139             });
1140             dialog = builder.create();
1141             break;
1142         }
1143         default:
1144             Log_OC.e(TAG, "Incorrect dialog called with id = " + id);
1145         }
1146         return dialog;
1147     }
1148
1149
1150     /**
1151      * Starts and activity to open the 'new account' page in the ownCloud web site
1152      *
1153      * @param view      'Account register' button
1154      */
1155     public void onRegisterClick(View view) {
1156         Intent register = new Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.url_account_register)));
1157         setResult(RESULT_CANCELED);
1158         startActivity(register);
1159     }
1160
1161
1162     /**
1163      * Updates the content and visibility state of the icon and text associated
1164      * to the last check on the ownCloud server.
1165      */
1166     private void showServerStatus() {
1167         TextView tv = (TextView) findViewById(R.id.server_status_text);
1168
1169         if (mServerStatusIcon == 0 && mServerStatusText == 0) {
1170             tv.setVisibility(View.INVISIBLE);
1171
1172         } else {
1173             tv.setText(mServerStatusText);
1174             tv.setCompoundDrawablesWithIntrinsicBounds(mServerStatusIcon, 0, 0, 0);
1175             tv.setVisibility(View.VISIBLE);
1176         }
1177
1178     }
1179
1180
1181     /**
1182      * Updates the content and visibility state of the icon and text associated
1183      * to the interactions with the OAuth authorization server.
1184      */
1185     private void showAuthStatus() {
1186         if (mAuthStatusIcon == 0 && mAuthStatusText == 0) {
1187             mAuthStatusLayout.setVisibility(View.INVISIBLE);
1188
1189         } else {
1190             mAuthStatusLayout.setText(mAuthStatusText);
1191             mAuthStatusLayout.setCompoundDrawablesWithIntrinsicBounds(mAuthStatusIcon, 0, 0, 0);
1192             mAuthStatusLayout.setVisibility(View.VISIBLE);
1193         }
1194     }
1195
1196
1197     private void showRefreshButton() {
1198         /*mHostUrlInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.ic_action_refresh_black, 0);
1199         mRefreshButtonEnabled = true;*/
1200         mRefreshButton.setVisibility(View.VISIBLE);
1201     }
1202
1203     private void hideRefreshButton() {
1204         /*mHostUrlInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
1205         mRefreshButtonEnabled = false;*/
1206         mRefreshButton.setVisibility(View.GONE);
1207     }
1208
1209     /**
1210      * Called when the refresh button in the input field for ownCloud host is clicked.
1211      *
1212      * Performs a new check on the URL in the input field.
1213      *
1214      * @param view      Refresh 'button'
1215      */
1216     public void onRefreshClick(View view) {
1217         checkOcServer();
1218     }
1219
1220
1221     /**
1222      * Called when the eye icon in the password field is clicked.
1223      *
1224      * Toggles the visibility of the password in the field.
1225      */
1226     public void onViewPasswordClick() {
1227         int selectionStart = mPasswordInput.getSelectionStart();
1228         int selectionEnd = mPasswordInput.getSelectionEnd();
1229         if (isPasswordVisible()) {
1230             hidePassword();
1231         } else {
1232             showPassword();
1233         }
1234         mPasswordInput.setSelection(selectionStart, selectionEnd);
1235     }
1236
1237
1238     /**
1239      * Called when the checkbox for OAuth authorization is clicked.
1240      *
1241      * Hides or shows the input fields for user & password.
1242      *
1243      * @param view      'View password' 'button'
1244      */
1245     public void onCheckClick(View view) {
1246         CheckBox oAuth2Check = (CheckBox)view;
1247         changeViewByOAuth2Check(oAuth2Check.isChecked());
1248
1249     }
1250
1251     /**
1252      * Changes the visibility of input elements depending upon the kind of authorization
1253      * chosen by the user: basic or OAuth
1254      *
1255      * @param checked       'True' when OAuth is selected.
1256      */
1257     public void changeViewByOAuth2Check(Boolean checked) {
1258
1259         if (checked) {
1260             mOAuthAuthEndpointText.setVisibility(View.VISIBLE);
1261             mOAuthTokenEndpointText.setVisibility(View.VISIBLE);
1262             mUsernameInput.setVisibility(View.GONE);
1263             mPasswordInput.setVisibility(View.GONE);
1264         } else {
1265             mOAuthAuthEndpointText.setVisibility(View.GONE);
1266             mOAuthTokenEndpointText.setVisibility(View.GONE);
1267             mUsernameInput.setVisibility(View.VISIBLE);
1268             mPasswordInput.setVisibility(View.VISIBLE);
1269         }
1270
1271     }
1272
1273     /**
1274      * Called from SslValidatorDialog when a new server certificate was correctly saved.
1275      */
1276     public void onSavedCertificate() {
1277         checkOcServer();
1278     }
1279
1280     /**
1281      * Called from SslValidatorDialog when a new server certificate could not be saved
1282      * when the user requested it.
1283      */
1284     @Override
1285     public void onFailedSavingCertificate() {
1286         showDialog(DIALOG_CERT_NOT_SAVED);
1287     }
1288
1289
1290     /**
1291      *  Called when the 'action' button in an IME is pressed ('enter' in software keyboard).
1292      *
1293      *  Used to trigger the authorization check when the user presses 'enter' after writing the password.
1294      */
1295     @Override
1296     public boolean onEditorAction(TextView inputField, int actionId, KeyEvent event) {
1297         if (inputField != null && inputField.equals(mPasswordInput) &&
1298                 actionId == EditorInfo.IME_ACTION_DONE) {
1299             if (mOkButton.isEnabled()) {
1300                 mOkButton.performClick();
1301             }
1302         }
1303         return false;   // always return false to grant that the software keyboard is hidden anyway
1304     }
1305
1306
1307     private abstract static class RightDrawableOnTouchListener implements OnTouchListener  {
1308
1309         private int fuzz = 75;
1310
1311         /**
1312          * {@inheritDoc}
1313          */
1314         @Override
1315         public boolean onTouch(View view, MotionEvent event) {
1316             Drawable rightDrawable = null;
1317             if (view instanceof TextView) {
1318                 Drawable[] drawables = ((TextView)view).getCompoundDrawables();
1319                 if (drawables.length > 2) {
1320                     rightDrawable = drawables[2];
1321                 }
1322             }
1323             if (rightDrawable != null) {
1324                 final int x = (int) event.getX();
1325                 final int y = (int) event.getY();
1326                 final Rect bounds = rightDrawable.getBounds();
1327                 if (x >= (view.getRight() - bounds.width() - fuzz) && x <= (view.getRight() - view.getPaddingRight() + fuzz)
1328                     && y >= (view.getPaddingTop() - fuzz) && y <= (view.getHeight() - view.getPaddingBottom()) + fuzz) {
1329
1330                     return onDrawableTouch(event);
1331                 }
1332             }
1333             return false;
1334         }
1335
1336         public abstract boolean onDrawableTouch(final MotionEvent event);
1337     }
1338
1339 }