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.TextView;
  64 import android.widget.Toast;
  65 import android.widget.TextView.OnEditorActionListener;
  66
  67 import com.owncloud.android.R;
  68
  69 import eu.alefzero.webdav.WebdavClient;
  70
  71 /**
  72  * This Activity is used to add an ownCloud account to the App
  73  *
  74  * @author Bartek Przybylski
  75  * @author David A. Velasco
  76  */
  77 public class AuthenticatorActivity extends AccountAuthenticatorActivity
  78 implements  OnRemoteOperationListener, OnSslValidatorListener, OnFocusChangeListener, OnEditorActionListener {
  79
  80     private static final String TAG = AuthenticatorActivity.class.getSimpleName();
  81
  82     public static final String EXTRA_ACCOUNT = "ACCOUNT";
  83     public static final String EXTRA_USER_NAME = "USER_NAME";
  84     public static final String EXTRA_HOST_NAME = "HOST_NAME";
  85     public static final String EXTRA_ACTION = "ACTION";
  86     public static final String EXTRA_ENFORCED_UPDATE = "ENFORCE_UPDATE";
  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 View mRefreshButton;
 136     private EditText mUsernameInput;
 137     private EditText mPasswordInput;
 138     private CheckBox mOAuth2Check;
 139     private String mOAuthAccessToken;
 140     private View mOkButton;
 141     private TextView mAuthStatusLayout;
 142
 143     private TextView mOAuthAuthEndpointText;
 144     private TextView mOAuthTokenEndpointText;
 145
 146     private boolean mRefreshButtonEnabled;
 147
 148     private boolean mHostUrlInputEnabled;
 149
 150
 151     /**
 152      * {@inheritDoc}
 153      *
 154      * IMPORTANT ENTRY POINT 1: activity is shown to the user
 155      */
 156     @Override
 157     protected void onCreate(Bundle savedInstanceState) {
 158         super.onCreate(savedInstanceState);
 159         getWindow().requestFeature(Window.FEATURE_NO_TITLE);
 160
 161         /// set view and get references to view elements
 162         setContentView(R.layout.account_setup);
 163         mHostUrlInput = (EditText) findViewById(R.id.hostUrlInput);
 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         /// set Host Url Input Enabled
 173         mHostUrlInputEnabled = getResources().getBoolean(R.bool.show_server_url_input);
 174
 175
 176         /// complete label for 'register account' button
 177         Button b = (Button) findViewById(R.id.account_register);
 178         if (b != null) {
 179             b.setText(String.format(getString(R.string.auth_register), getString(R.string.app_name)));
 180         }
 181
 182         /// initialization
 183         mAccountMgr = AccountManager.get(this);
 184         mNewCapturedUriFromOAuth2Redirection = null;
 185         mAction = getIntent().getByteExtra(EXTRA_ACTION, ACTION_CREATE);
 186         mAccount = null;
 187         mHostBaseUrl = "";
 188         boolean refreshButtonEnabled = false;
 189
 190         // URL input configuration applied
 191         if (!mHostUrlInputEnabled)
 192         {
 193             mHostUrlInput.setText(getString(R.string.server_url));
 194             findViewById(R.id.hostUrlFrame).setVisibility(View.GONE);
 195
 196             mRefreshButton = findViewById(R.id.centeredRefreshButton);
 197
 198         } else {
 199             mRefreshButton = findViewById(R.id.embeddedRefreshButton);
 200         }
 201
 202         if (savedInstanceState == null) {
 203             /// connection state and info
 204             mServerStatusText = mServerStatusIcon = 0;
 205             mServerIsValid = false;
 206             mServerIsChecked = false;
 207             mIsSslConn = false;
 208             mAuthStatusText = mAuthStatusIcon = 0;
 209
 210             /// retrieve extras from intent
 211             String tokenType = getIntent().getExtras().getString(AccountAuthenticator.KEY_AUTH_TOKEN_TYPE);
 212             boolean oAuthRequired = AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN.equals(tokenType) || OAUTH_MODE_ON.equals(getString(R.string.oauth2_mode));
 213
 214             mAccount = getIntent().getExtras().getParcelable(EXTRA_ACCOUNT);
 215             if (mAccount != null) {
 216                 String ocVersion = mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_OC_VERSION);
 217                 if (ocVersion != null) {
 218                     mDiscoveredVersion = new OwnCloudVersion(ocVersion);
 219                 }
 220                 mHostBaseUrl = normalizeUrl(mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_OC_BASE_URL));
 221                 mHostUrlInput.setText(mHostBaseUrl);
 222                 String userName = mAccount.name.substring(0, mAccount.name.lastIndexOf('@'));
 223                 mUsernameInput.setText(userName);
 224                 oAuthRequired = (mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_SUPPORTS_OAUTH2) != null);
 225             }
 226             mOAuth2Check.setChecked(oAuthRequired);
 227             changeViewByOAuth2Check(oAuthRequired);
 228             mJustCreated = true;
 229
 230             if (mAction == ACTION_UPDATE_TOKEN || !mHostUrlInputEnabled) {
 231                 checkOcServer();
 232             }
 233
 234         } else {
 235             /// connection state and info
 236             mServerIsValid = savedInstanceState.getBoolean(KEY_SERVER_VALID);
 237             mServerIsChecked = savedInstanceState.getBoolean(KEY_SERVER_CHECKED);
 238             mServerStatusText = savedInstanceState.getInt(KEY_SERVER_STATUS_TEXT);
 239             mServerStatusIcon = savedInstanceState.getInt(KEY_SERVER_STATUS_ICON);
 240             mIsSslConn = savedInstanceState.getBoolean(KEY_IS_SSL_CONN);
 241             mAuthStatusText = savedInstanceState.getInt(KEY_AUTH_STATUS_TEXT);
 242             mAuthStatusIcon = savedInstanceState.getInt(KEY_AUTH_STATUS_ICON);
 243             if (savedInstanceState.getBoolean(KEY_PASSWORD_VISIBLE, false)) {
 244                 showPassword();
 245             }
 246
 247             /// server data
 248             String ocVersion = savedInstanceState.getString(KEY_OC_VERSION);
 249             if (ocVersion != null) {
 250                 mDiscoveredVersion = new OwnCloudVersion(ocVersion);
 251             }
 252             mHostBaseUrl = savedInstanceState.getString(KEY_HOST_URL_TEXT);
 253
 254             // account data, if updating
 255             mAccount = savedInstanceState.getParcelable(KEY_ACCOUNT);
 256
 257             // check if server check was interrupted by a configuration change
 258             if (savedInstanceState.getBoolean(KEY_SERVER_CHECK_IN_PROGRESS, false)) {
 259                 checkOcServer();
 260             }
 261
 262             // refresh button enabled
 263             refreshButtonEnabled = savedInstanceState.getBoolean(KEY_REFRESH_BUTTON_ENABLED);
 264
 265
 266         }
 267
 268         showServerStatus();
 269         showAuthStatus();
 270
 271         if (mAction == ACTION_UPDATE_TOKEN) {
 272             /// lock things that should not change
 273             mHostUrlInput.setEnabled(false);
 274             mHostUrlInput.setFocusable(false);
 275             mUsernameInput.setEnabled(false);
 276             mUsernameInput.setFocusable(false);
 277             mOAuth2Check.setVisibility(View.GONE);
 278         }
 279
 280         //if (mServerIsChecked && !mServerIsValid && mRefreshButtonEnabled) showRefreshButton();
 281         if (mServerIsChecked && !mServerIsValid && refreshButtonEnabled) showRefreshButton();
 282         mOkButton.setEnabled(mServerIsValid); // state not automatically recovered in configuration changes
 283
 284         if (!OAUTH_MODE_OPTIONAL.equals(getString(R.string.oauth2_mode))) {
 285             mOAuth2Check.setVisibility(View.GONE);
 286         }
 287
 288         mPasswordInput.setText("");     // clean password to avoid social hacking (disadvantage: password in removed if the device is turned aside)
 289
 290         /// bind view elements to listeners
 291         mHostUrlInput.setOnFocusChangeListener(this);
 292         mHostUrlInput.addTextChangedListener(new TextWatcher() {
 293
 294             @Override
 295             public void afterTextChanged(Editable s) {
 296                 if (!mHostBaseUrl.equals(normalizeUrl(mHostUrlInput.getText().toString()))) {
 297                     mOkButton.setEnabled(false);
 298                 }
 299             }
 300
 301             @Override
 302             public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
 303
 304             @Override
 305             public void onTextChanged(CharSequence s, int start, int before, int count) {}
 306
 307         });
 308         mPasswordInput.setOnFocusChangeListener(this);
 309         mPasswordInput.setImeOptions(EditorInfo.IME_ACTION_DONE);
 310         mPasswordInput.setOnEditorActionListener(this);
 311         mPasswordInput.setOnTouchListener(new RightDrawableOnTouchListener() {
 312             @Override
 313             public boolean onDrawableTouch(final MotionEvent event) {
 314                 if (event.getAction() == MotionEvent.ACTION_UP) {
 315                     AuthenticatorActivity.this.onViewPasswordClick();
 316                 }
 317                 return true;
 318             }
 319         });
 320     }
 321
 322     /**
 323      * Saves relevant state before {@link #onPause()}
 324      *
 325      * Do NOT save {@link #mNewCapturedUriFromOAuth2Redirection}; it keeps a temporal flag, intended to defer the
 326      * processing of the redirection caught in {@link #onNewIntent(Intent)} until {@link #onResume()}
 327      *
 328      * See {@link #loadSavedInstanceState(Bundle)}
 329      */
 330     @Override
 331     protected void onSaveInstanceState(Bundle outState) {
 332         super.onSaveInstanceState(outState);
 333
 334         /// connection state and info
 335         outState.putInt(KEY_SERVER_STATUS_TEXT, mServerStatusText);
 336         outState.putInt(KEY_SERVER_STATUS_ICON, mServerStatusIcon);
 337         outState.putBoolean(KEY_SERVER_VALID, mServerIsValid);
 338         outState.putBoolean(KEY_SERVER_CHECKED, mServerIsChecked);
 339         outState.putBoolean(KEY_SERVER_CHECK_IN_PROGRESS, (!mServerIsValid && mOcServerChkOperation != null));
 340         outState.putBoolean(KEY_IS_SSL_CONN, mIsSslConn);
 341         outState.putBoolean(KEY_PASSWORD_VISIBLE, isPasswordVisible());
 342         outState.putInt(KEY_AUTH_STATUS_ICON, mAuthStatusIcon);
 343         outState.putInt(KEY_AUTH_STATUS_TEXT, mAuthStatusText);
 344
 345         /// server data
 346         if (mDiscoveredVersion != null) {
 347             outState.putString(KEY_OC_VERSION, mDiscoveredVersion.toString());
 348         }
 349         outState.putString(KEY_HOST_URL_TEXT, mHostBaseUrl);
 350
 351         /// account data, if updating
 352         if (mAccount != null) {
 353             outState.putParcelable(KEY_ACCOUNT, mAccount);
 354         }
 355
 356         // refresh button enabled
 357         //outState.putBoolean(KEY_REFRESH_BUTTON_ENABLED, mRefreshButtonEnabled);
 358         outState.putBoolean(KEY_REFRESH_BUTTON_ENABLED, (mRefreshButton.getVisibility() == View.VISIBLE));
 359
 360     }
 361
 362
 363     /**
 364      * The redirection triggered by the OAuth authentication server as response to the GET AUTHORIZATION request
 365      * is caught here.
 366      *
 367      * To make this possible, this activity needs to be qualified with android:launchMode = "singleTask" in the
 368      * AndroidManifest.xml file.
 369      */
 370     @Override
 371     protected void onNewIntent (Intent intent) {
 372         Log_OC.d(TAG, "onNewIntent()");
 373         Uri data = intent.getData();
 374         if (data != null && data.toString().startsWith(getString(R.string.oauth2_redirect_uri))) {
 375             mNewCapturedUriFromOAuth2Redirection = data;
 376         }
 377     }
 378
 379
 380     /**
 381      * The redirection triggered by the OAuth authentication server as response to the GET AUTHORIZATION, and
 382      * deferred in {@link #onNewIntent(Intent)}, is processed here.
 383      */
 384     @Override
 385     protected void onResume() {
 386         super.onResume();
 387         // the state of mOAuth2Check is automatically recovered between configuration changes, but not before onCreate() finishes; so keep the next lines here
 388         changeViewByOAuth2Check(mOAuth2Check.isChecked());
 389         if (mAction == ACTION_UPDATE_TOKEN && mJustCreated && getIntent().getBooleanExtra(EXTRA_ENFORCED_UPDATE, false)) {
 390             if (mOAuth2Check.isChecked())
 391                 Toast.makeText(this, R.string.auth_expired_oauth_token_toast, Toast.LENGTH_LONG).show();
 392             else
 393                 Toast.makeText(this, R.string.auth_expired_basic_auth_toast, Toast.LENGTH_LONG).show();
 394         }
 395
 396         if (mNewCapturedUriFromOAuth2Redirection != null) {
 397             getOAuth2AccessTokenFromCapturedRedirection();
 398         }
 399
 400         mJustCreated = false;
 401     }
 402
 403
 404     /**
 405      * Parses the redirection with the response to the GET AUTHORIZATION request to the
 406      * oAuth server and requests for the access token (GET ACCESS TOKEN)
 407      */
 408     private void getOAuth2AccessTokenFromCapturedRedirection() {
 409         /// Parse data from OAuth redirection
 410         String queryParameters = mNewCapturedUriFromOAuth2Redirection.getQuery();
 411         mNewCapturedUriFromOAuth2Redirection = null;
 412
 413         /// Showing the dialog with instructions for the user.
 414         showDialog(DIALOG_OAUTH2_LOGIN_PROGRESS);
 415
 416         /// GET ACCESS TOKEN to the oAuth server
 417         RemoteOperation operation = new OAuth2GetAccessToken(   getString(R.string.oauth2_client_id),
 418                 getString(R.string.oauth2_redirect_uri),
 419                 getString(R.string.oauth2_grant_type),
 420                 queryParameters);
 421         //WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(getString(R.string.oauth2_url_endpoint_access)), getApplicationContext());
 422         WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mOAuthTokenEndpointText.getText().toString().trim()), getApplicationContext());
 423         operation.execute(client, this, mHandler);
 424     }
 425
 426
 427
 428     /**
 429      * Handles the change of focus on the text inputs for the server URL and the password
 430      */
 431     public void onFocusChange(View view, boolean hasFocus) {
 432         if (view.getId() == R.id.hostUrlInput) {
 433             if (!hasFocus) {
 434                 onUrlInputFocusLost((TextView) view);
 435             }
 436             else {
 437                 hideRefreshButton();
 438             }
 439
 440         } else if (view.getId() == R.id.account_password) {
 441             onPasswordFocusChanged((TextView) view, hasFocus);
 442         }
 443     }
 444
 445
 446     /**
 447      * Handles changes in focus on the text input for the server URL.
 448      *
 449      * IMPORTANT ENTRY POINT 2: When (!hasFocus), user wrote the server URL and changed to
 450      * other field. The operation to check the existence of the server in the entered URL is
 451      * started.
 452      *
 453      * When hasFocus:    user 'comes back' to write again the server URL.
 454      *
 455      * @param hostInput     TextView with the URL input field receiving the change of focus.
 456      */
 457     private void onUrlInputFocusLost(TextView hostInput) {
 458         if (!mHostBaseUrl.equals(normalizeUrl(mHostUrlInput.getText().toString()))) {
 459             checkOcServer();
 460         } else {
 461             mOkButton.setEnabled(mServerIsValid);
 462             if (!mServerIsValid) {
 463                 showRefreshButton();
 464             }
 465         }
 466     }
 467
 468
 469     private void checkOcServer() {
 470         String uri = trimUrlWebdav(mHostUrlInput.getText().toString().trim());
 471
 472         if (!mHostUrlInputEnabled){
 473             uri = getString(R.string.server_url);
 474         }
 475
 476         mServerIsValid = false;
 477         mServerIsChecked = false;
 478         mOkButton.setEnabled(false);
 479         mDiscoveredVersion = null;
 480         hideRefreshButton();
 481         if (uri.length() != 0) {
 482             mServerStatusText = R.string.auth_testing_connection;
 483             mServerStatusIcon = R.drawable.progress_small;
 484             showServerStatus();
 485             mOcServerChkOperation = new  OwnCloudServerCheckOperation(uri, this);
 486             WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(uri), this);
 487             mOperationThread = mOcServerChkOperation.execute(client, this, mHandler);
 488         } else {
 489             mServerStatusText = 0;
 490             mServerStatusIcon = 0;
 491             showServerStatus();
 492         }
 493     }
 494
 495
 496     /**
 497      * Handles changes in focus on the text input for the password (basic authorization).
 498      *
 499      * When (hasFocus), the button to toggle password visibility is shown.
 500      *
 501      * When (!hasFocus), the button is made invisible and the password is hidden.
 502      *
 503      * @param passwordInput    TextView with the password input field receiving the change of focus.
 504      * @param hasFocus          'True' if focus is received, 'false' if is lost
 505      */
 506     private void onPasswordFocusChanged(TextView passwordInput, boolean hasFocus) {
 507         if (hasFocus) {
 508             showViewPasswordButton();
 509         } else {
 510             hidePassword();
 511             hidePasswordButton();
 512         }
 513     }
 514
 515
 516     private void showViewPasswordButton() {
 517         //int drawable = android.R.drawable.ic_menu_view;
 518         int drawable = R.drawable.ic_view;
 519         if (isPasswordVisible()) {
 520             //drawable = android.R.drawable.ic_secure;
 521             drawable = R.drawable.ic_hide;
 522         }
 523         mPasswordInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, drawable, 0);
 524     }
 525
 526     private boolean isPasswordVisible() {
 527         return ((mPasswordInput.getInputType() & InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD) == InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
 528     }
 529
 530     private void hidePasswordButton() {
 531         mPasswordInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
 532     }
 533
 534     private void showPassword() {
 535         mPasswordInput.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
 536         showViewPasswordButton();
 537     }
 538
 539     private void hidePassword() {
 540         mPasswordInput.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
 541         showViewPasswordButton();
 542     }
 543
 544
 545     /**
 546      * Cancels the authenticator activity
 547      *
 548      * IMPORTANT ENTRY POINT 3: Never underestimate the importance of cancellation
 549      *
 550      * This method is bound in the layout/acceoun_setup.xml resource file.
 551      *
 552      * @param view      Cancel button
 553      */
 554     public void onCancelClick(View view) {
 555         setResult(RESULT_CANCELED);     // TODO review how is this related to AccountAuthenticator (debugging)
 556         finish();
 557     }
 558
 559
 560
 561     /**
 562      * Checks the credentials of the user in the root of the ownCloud server
 563      * before creating a new local account.
 564      *
 565      * For basic authorization, a check of existence of the root folder is
 566      * performed.
 567      *
 568      * For OAuth, starts the flow to get an access token; the credentials test
 569      * is postponed until it is available.
 570      *
 571      * IMPORTANT ENTRY POINT 4
 572      *
 573      * @param view      OK button
 574      */
 575     public void onOkClick(View view) {
 576         // this check should be unnecessary
 577         if (mDiscoveredVersion == null || !mDiscoveredVersion.isVersionValid()  || mHostBaseUrl == null || mHostBaseUrl.length() == 0) {
 578             mServerStatusIcon = R.drawable.common_error;
 579             mServerStatusText = R.string.auth_wtf_reenter_URL;
 580             showServerStatus();
 581             mOkButton.setEnabled(false);
 582             Log_OC.wtf(TAG,  "The user was allowed to click 'connect' to an unchecked server!!");
 583             return;
 584         }
 585
 586         if (mOAuth2Check.isChecked()) {
 587             startOauthorization();
 588
 589         } else {
 590             checkBasicAuthorization();
 591         }
 592     }
 593
 594
 595     /**
 596      * Tests the credentials entered by the user performing a check of existence on
 597      * the root folder of the ownCloud server.
 598      */
 599     private void checkBasicAuthorization() {
 600         /// get the path to the root folder through WebDAV from the version server
 601         String webdav_path = AccountUtils.getWebdavPath(mDiscoveredVersion, false);
 602
 603         /// get basic credentials entered by user
 604         String username = mUsernameInput.getText().toString();
 605         String password = mPasswordInput.getText().toString();
 606
 607         /// be gentle with the user
 608         showDialog(DIALOG_LOGIN_PROGRESS);
 609
 610         /// test credentials accessing the root folder
 611         mAuthCheckOperation = new  ExistenceCheckOperation("", this, false);
 612         WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mHostBaseUrl + webdav_path), this);
 613         client.setBasicCredentials(username, password);
 614         mOperationThread = mAuthCheckOperation.execute(client, this, mHandler);
 615     }
 616
 617
 618     /**
 619      * Starts the OAuth 'grant type' flow to get an access token, with
 620      * a GET AUTHORIZATION request to the BUILT-IN authorization server.
 621      */
 622     private void startOauthorization() {
 623         // be gentle with the user
 624         mAuthStatusIcon = R.drawable.progress_small;
 625         mAuthStatusText = R.string.oauth_login_connection;
 626         showAuthStatus();
 627
 628         // GET AUTHORIZATION request
 629         //Uri uri = Uri.parse(getString(R.string.oauth2_url_endpoint_auth));
 630         Uri uri = Uri.parse(mOAuthAuthEndpointText.getText().toString().trim());
 631         Uri.Builder uriBuilder = uri.buildUpon();
 632         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_RESPONSE_TYPE, getString(R.string.oauth2_response_type));
 633         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_REDIRECT_URI, getString(R.string.oauth2_redirect_uri));
 634         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_CLIENT_ID, getString(R.string.oauth2_client_id));
 635         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_SCOPE, getString(R.string.oauth2_scope));
 636         //uriBuilder.appendQueryParameter(OAuth2Constants.KEY_STATE, whateverwewant);
 637         uri = uriBuilder.build();
 638         Log_OC.d(TAG, "Starting browser to view " + uri.toString());
 639         Intent i = new Intent(Intent.ACTION_VIEW, uri);
 640         startActivity(i);
 641     }
 642
 643
 644     /**
 645      * Callback method invoked when a RemoteOperation executed by this Activity finishes.
 646      *
 647      * Dispatches the operation flow to the right method.
 648      */
 649     @Override
 650     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 651
 652         if (operation instanceof OwnCloudServerCheckOperation) {
 653             onOcServerCheckFinish((OwnCloudServerCheckOperation) operation, result);
 654
 655         } else if (operation instanceof OAuth2GetAccessToken) {
 656             onGetOAuthAccessTokenFinish((OAuth2GetAccessToken)operation, result);
 657
 658         } else if (operation instanceof ExistenceCheckOperation)  {
 659             onAuthorizationCheckFinish((ExistenceCheckOperation)operation, result);
 660
 661         }
 662     }
 663
 664
 665     /**
 666      * Processes the result of the server check performed when the user finishes the enter of the
 667      * server URL.
 668      *
 669      * @param operation     Server check performed.
 670      * @param result        Result of the check.
 671      */
 672     private void onOcServerCheckFinish(OwnCloudServerCheckOperation operation, RemoteOperationResult result) {
 673         if (operation.equals(mOcServerChkOperation)) {
 674             /// save result state
 675             mServerIsChecked = true;
 676             mServerIsValid = result.isSuccess();
 677             mIsSslConn = (result.getCode() == ResultCode.OK_SSL);
 678             mOcServerChkOperation = null;
 679
 680             /// update status icon and text
 681             if (mServerIsValid) {
 682                 hideRefreshButton();
 683             } else {
 684                 showRefreshButton();
 685             }
 686             updateServerStatusIconAndText(result);
 687             showServerStatus();
 688
 689             /// very special case (TODO: move to a common place for all the remote operations)
 690             if (result.getCode() == ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED) {
 691                 mLastSslUntrustedServerResult = result;
 692                 showDialog(DIALOG_SSL_VALIDATOR);
 693             }
 694
 695             /// retrieve discovered version and normalize server URL
 696             mDiscoveredVersion = operation.getDiscoveredVersion();
 697             mHostBaseUrl = normalizeUrl(mHostUrlInput.getText().toString());
 698
 699             /// allow or not the user try to access the server
 700             mOkButton.setEnabled(mServerIsValid);
 701
 702         }   // else nothing ; only the last check operation is considered;
 703         // multiple can be triggered if the user amends a URL before a previous check can be triggered
 704     }
 705
 706
 707     private String normalizeUrl(String url) {
 708         if (url != null && url.length() > 0) {
 709             url = url.trim();
 710             if (!url.toLowerCase().startsWith("http://") &&
 711                     !url.toLowerCase().startsWith("https://")) {
 712                 if (mIsSslConn) {
 713                     url = "https://" + url;
 714                 } else {
 715                     url = "http://" + url;
 716                 }
 717             }
 718
 719             // OC-208: Add suffix remote.php/webdav to normalize (OC-34)
 720             url = trimUrlWebdav(url);
 721
 722             if (url.endsWith("/")) {
 723                 url = url.substring(0, url.length() - 1);
 724             }
 725
 726         }
 727         Log_OC.d(TAG, "URL Normalize " + url);
 728         return (url != null ? url : "");
 729     }
 730
 731
 732     private String trimUrlWebdav(String url){
 733         if(url.toLowerCase().endsWith(AccountUtils.WEBDAV_PATH_4_0)){
 734             url = url.substring(0, url.length() - AccountUtils.WEBDAV_PATH_4_0.length());
 735         } else if(url.toLowerCase().endsWith(AccountUtils.WEBDAV_PATH_2_0)){
 736             url = url.substring(0, url.length() - AccountUtils.WEBDAV_PATH_2_0.length());
 737         } else if (url.toLowerCase().endsWith(AccountUtils.WEBDAV_PATH_1_2)){
 738             url = url.substring(0, url.length() - AccountUtils.WEBDAV_PATH_1_2.length());
 739         }
 740         return (url != null ? url : "");
 741     }
 742
 743
 744     /**
 745      * Chooses the right icon and text to show to the user for the received operation result.
 746      *
 747      * @param result    Result of a remote operation performed in this activity
 748      */
 749     private void updateServerStatusIconAndText(RemoteOperationResult result) {
 750         mServerStatusIcon = R.drawable.common_error;    // the most common case in the switch below
 751
 752         switch (result.getCode()) {
 753         case OK_SSL:
 754             mServerStatusIcon = android.R.drawable.ic_secure;
 755             mServerStatusText = R.string.auth_secure_connection;
 756             break;
 757
 758         case OK_NO_SSL:
 759         case OK:
 760             if (mHostUrlInput.getText().toString().trim().toLowerCase().startsWith("http://") ) {
 761                 mServerStatusText = R.string.auth_connection_established;
 762                 mServerStatusIcon = R.drawable.ic_ok;
 763             } else {
 764                 mServerStatusText = R.string.auth_nossl_plain_ok_title;
 765                 mServerStatusIcon = android.R.drawable.ic_partial_secure;
 766             }
 767             break;
 768
 769         case NO_NETWORK_CONNECTION:
 770             mServerStatusIcon = R.drawable.no_network;
 771             mServerStatusText = R.string.auth_no_net_conn_title;
 772             break;
 773
 774         case SSL_RECOVERABLE_PEER_UNVERIFIED:
 775             mServerStatusText = R.string.auth_ssl_unverified_server_title;
 776             break;
 777         case BAD_OC_VERSION:
 778             mServerStatusText = R.string.auth_bad_oc_version_title;
 779             break;
 780         case WRONG_CONNECTION:
 781             mServerStatusText = R.string.auth_wrong_connection_title;
 782             break;
 783         case TIMEOUT:
 784             mServerStatusText = R.string.auth_timeout_title;
 785             break;
 786         case INCORRECT_ADDRESS:
 787             mServerStatusText = R.string.auth_incorrect_address_title;
 788             break;
 789         case SSL_ERROR:
 790             mServerStatusText = R.string.auth_ssl_general_error_title;
 791             break;
 792         case UNAUTHORIZED:
 793             mServerStatusText = R.string.auth_unauthorized;
 794             break;
 795         case HOST_NOT_AVAILABLE:
 796             mServerStatusText = R.string.auth_unknown_host_title;
 797             break;
 798         case INSTANCE_NOT_CONFIGURED:
 799             mServerStatusText = R.string.auth_not_configured_title;
 800             break;
 801         case FILE_NOT_FOUND:
 802             mServerStatusText = R.string.auth_incorrect_path_title;
 803             break;
 804         case OAUTH2_ERROR:
 805             mServerStatusText = R.string.auth_oauth_error;
 806             break;
 807         case OAUTH2_ERROR_ACCESS_DENIED:
 808             mServerStatusText = R.string.auth_oauth_error_access_denied;
 809             break;
 810         case UNHANDLED_HTTP_CODE:
 811         case UNKNOWN_ERROR:
 812             mServerStatusText = R.string.auth_unknown_error_title;
 813             break;
 814         default:
 815             mServerStatusText = 0;
 816             mServerStatusIcon = 0;
 817         }
 818     }
 819
 820
 821     /**
 822      * Chooses the right icon and text to show to the user for the received operation result.
 823      *
 824      * @param result    Result of a remote operation performed in this activity
 825      */
 826     private void updateAuthStatusIconAndText(RemoteOperationResult result) {
 827         mAuthStatusIcon = R.drawable.common_error;    // the most common case in the switch below
 828
 829         switch (result.getCode()) {
 830         case OK_SSL:
 831             mAuthStatusIcon = android.R.drawable.ic_secure;
 832             mAuthStatusText = R.string.auth_secure_connection;
 833             break;
 834
 835         case OK_NO_SSL:
 836         case OK:
 837             if (mHostUrlInput.getText().toString().trim().toLowerCase().startsWith("http://") ) {
 838                 mAuthStatusText = R.string.auth_connection_established;
 839                 mAuthStatusIcon = R.drawable.ic_ok;
 840             } else {
 841                 mAuthStatusText = R.string.auth_nossl_plain_ok_title;
 842                 mAuthStatusIcon = android.R.drawable.ic_partial_secure;
 843             }
 844             break;
 845
 846         case NO_NETWORK_CONNECTION:
 847             mAuthStatusIcon = R.drawable.no_network;
 848             mAuthStatusText = R.string.auth_no_net_conn_title;
 849             break;
 850
 851         case SSL_RECOVERABLE_PEER_UNVERIFIED:
 852             mAuthStatusText = R.string.auth_ssl_unverified_server_title;
 853             break;
 854         case BAD_OC_VERSION:
 855             mAuthStatusText = R.string.auth_bad_oc_version_title;
 856             break;
 857         case WRONG_CONNECTION:
 858             mAuthStatusText = R.string.auth_wrong_connection_title;
 859             break;
 860         case TIMEOUT:
 861             mAuthStatusText = R.string.auth_timeout_title;
 862             break;
 863         case INCORRECT_ADDRESS:
 864             mAuthStatusText = R.string.auth_incorrect_address_title;
 865             break;
 866         case SSL_ERROR:
 867             mAuthStatusText = R.string.auth_ssl_general_error_title;
 868             break;
 869         case UNAUTHORIZED:
 870             mAuthStatusText = R.string.auth_unauthorized;
 871             break;
 872         case HOST_NOT_AVAILABLE:
 873             mAuthStatusText = R.string.auth_unknown_host_title;
 874             break;
 875         case INSTANCE_NOT_CONFIGURED:
 876             mAuthStatusText = R.string.auth_not_configured_title;
 877             break;
 878         case FILE_NOT_FOUND:
 879             mAuthStatusText = R.string.auth_incorrect_path_title;
 880             break;
 881         case OAUTH2_ERROR:
 882             mAuthStatusText = R.string.auth_oauth_error;
 883             break;
 884         case OAUTH2_ERROR_ACCESS_DENIED:
 885             mAuthStatusText = R.string.auth_oauth_error_access_denied;
 886             break;
 887         case UNHANDLED_HTTP_CODE:
 888         case UNKNOWN_ERROR:
 889             mAuthStatusText = R.string.auth_unknown_error_title;
 890             break;
 891         default:
 892             mAuthStatusText = 0;
 893             mAuthStatusIcon = 0;
 894         }
 895     }
 896
 897
 898     /**
 899      * Processes the result of the request for and access token send
 900      * to an OAuth authorization server.
 901      *
 902      * @param operation     Operation performed requesting the access token.
 903      * @param result        Result of the operation.
 904      */
 905     private void onGetOAuthAccessTokenFinish(OAuth2GetAccessToken operation, RemoteOperationResult result) {
 906         try {
 907             dismissDialog(DIALOG_OAUTH2_LOGIN_PROGRESS);
 908         } catch (IllegalArgumentException e) {
 909             // NOTHING TO DO ; can't find out what situation that leads to the exception in this code, but user logs signal that it happens
 910         }
 911
 912         String webdav_path = AccountUtils.getWebdavPath(mDiscoveredVersion, true);
 913         if (result.isSuccess() && webdav_path != null) {
 914             /// be gentle with the user
 915             showDialog(DIALOG_LOGIN_PROGRESS);
 916
 917             /// time to test the retrieved access token on the ownCloud server
 918             mOAuthAccessToken = ((OAuth2GetAccessToken)operation).getResultTokenMap().get(OAuth2Constants.KEY_ACCESS_TOKEN);
 919             Log_OC.d(TAG, "Got ACCESS TOKEN: " + mOAuthAccessToken);
 920             mAuthCheckOperation = new ExistenceCheckOperation("", this, false);
 921             WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mHostBaseUrl + webdav_path), this);
 922             client.setBearerCredentials(mOAuthAccessToken);
 923             mAuthCheckOperation.execute(client, this, mHandler);
 924
 925         } else {
 926             updateAuthStatusIconAndText(result);
 927             showAuthStatus();
 928             Log_OC.d(TAG, "Access failed: " + result.getLogMessage());
 929         }
 930     }
 931
 932
 933     /**
 934      * Processes the result of the access check performed to try the user credentials.
 935      *
 936      * Creates a new account through the AccountManager.
 937      *
 938      * @param operation     Access check performed.
 939      * @param result        Result of the operation.
 940      */
 941     private void onAuthorizationCheckFinish(ExistenceCheckOperation operation, RemoteOperationResult result) {
 942         try {
 943             dismissDialog(DIALOG_LOGIN_PROGRESS);
 944         } catch (IllegalArgumentException e) {
 945             // NOTHING TO DO ; can't find out what situation that leads to the exception in this code, but user logs signal that it happens
 946         }
 947
 948         if (result.isSuccess()) {
 949             Log_OC.d(TAG, "Successful access - time to save the account");
 950
 951             if (mAction == ACTION_CREATE) {
 952                 createAccount();
 953
 954             } else {
 955                 updateToken();
 956             }
 957
 958             finish();
 959
 960         } else if (result.isServerFail() || result.isException()) {
 961             /// if server fail or exception in authorization, the UI is updated as when a server check failed
 962             mServerIsChecked = true;
 963             mServerIsValid = false;
 964             mIsSslConn = false;
 965             mOcServerChkOperation = null;
 966             mDiscoveredVersion = null;
 967             mHostBaseUrl = normalizeUrl(mHostUrlInput.getText().toString());
 968
 969             // update status icon and text
 970             updateServerStatusIconAndText(result);
 971             showServerStatus();
 972             mAuthStatusIcon = 0;
 973             mAuthStatusText = 0;
 974             showAuthStatus();
 975
 976             // update input controls state
 977             showRefreshButton();
 978             mOkButton.setEnabled(false);
 979
 980             // very special case (TODO: move to a common place for all the remote operations) (dangerous here?)
 981             if (result.getCode() == ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED) {
 982                 mLastSslUntrustedServerResult = result;
 983                 showDialog(DIALOG_SSL_VALIDATOR);
 984             }
 985
 986         } else {    // authorization fail due to client side - probably wrong credentials
 987             updateAuthStatusIconAndText(result);
 988             showAuthStatus();
 989             Log_OC.d(TAG, "Access failed: " + result.getLogMessage());
 990         }
 991     }
 992
 993
 994     /**
 995      * Sets the proper response to get that the Account Authenticator that started this activity saves
 996      * a new authorization token for mAccount.
 997      */
 998     private void updateToken() {
 999         Bundle response = new Bundle();
1000         response.putString(AccountManager.KEY_ACCOUNT_NAME, mAccount.name);
1001         response.putString(AccountManager.KEY_ACCOUNT_TYPE, mAccount.type);
1002         boolean isOAuth = mOAuth2Check.isChecked();
1003         if (isOAuth) {
1004             response.putString(AccountManager.KEY_AUTHTOKEN, mOAuthAccessToken);
1005             // the next line is necessary; by now, notifications are calling directly to the AuthenticatorActivity to update, without AccountManager intervention
1006             mAccountMgr.setAuthToken(mAccount, AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN, mOAuthAccessToken);
1007         } else {
1008             response.putString(AccountManager.KEY_AUTHTOKEN, mPasswordInput.getText().toString());
1009             mAccountMgr.setPassword(mAccount, mPasswordInput.getText().toString());
1010         }
1011         setAccountAuthenticatorResult(response);
1012     }
1013
1014
1015     /**
1016      * Creates a new account through the Account Authenticator that started this activity.
1017      *
1018      * This makes the account permanent.
1019      *
1020      * TODO Decide how to name the OAuth accounts
1021      */
1022     private void createAccount() {
1023         /// create and save new ownCloud account
1024         boolean isOAuth = mOAuth2Check.isChecked();
1025
1026         Uri uri = Uri.parse(mHostBaseUrl);
1027         String username = mUsernameInput.getText().toString().trim();
1028         if (isOAuth) {
1029             username = "OAuth_user" + (new java.util.Random(System.currentTimeMillis())).nextLong();
1030         }
1031         String accountName = username + "@" + uri.getHost();
1032         if (uri.getPort() >= 0) {
1033             accountName += ":" + uri.getPort();
1034         }
1035         mAccount = new Account(accountName, AccountAuthenticator.ACCOUNT_TYPE);
1036         if (isOAuth) {
1037             mAccountMgr.addAccountExplicitly(mAccount, "", null);  // with our implementation, the password is never input in the app
1038         } else {
1039             mAccountMgr.addAccountExplicitly(mAccount, mPasswordInput.getText().toString(), null);
1040         }
1041
1042         /// add the new account as default in preferences, if there is none already
1043         Account defaultAccount = AccountUtils.getCurrentOwnCloudAccount(this);
1044         if (defaultAccount == null) {
1045             SharedPreferences.Editor editor = PreferenceManager
1046                     .getDefaultSharedPreferences(this).edit();
1047             editor.putString("select_oc_account", accountName);
1048             editor.commit();
1049         }
1050
1051         /// prepare result to return to the Authenticator
1052         //  TODO check again what the Authenticator makes with it; probably has the same effect as addAccountExplicitly, but it's not well done
1053         final Intent intent = new Intent();
1054         intent.putExtra(AccountManager.KEY_ACCOUNT_TYPE,    AccountAuthenticator.ACCOUNT_TYPE);
1055         intent.putExtra(AccountManager.KEY_ACCOUNT_NAME,    mAccount.name);
1056         if (!isOAuth)
1057             intent.putExtra(AccountManager.KEY_AUTHTOKEN,   AccountAuthenticator.ACCOUNT_TYPE); // TODO check this; not sure it's right; maybe
1058         intent.putExtra(AccountManager.KEY_USERDATA,        username);
1059         if (isOAuth) {
1060             mAccountMgr.setAuthToken(mAccount, AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN, mOAuthAccessToken);
1061         }
1062         /// add user data to the new account; TODO probably can be done in the last parameter addAccountExplicitly, or in KEY_USERDATA
1063         mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_OC_VERSION,    mDiscoveredVersion.toString());
1064         mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_OC_BASE_URL,   mHostBaseUrl);
1065         if (isOAuth)
1066             mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_SUPPORTS_OAUTH2, "TRUE");  // TODO this flag should be unnecessary
1067
1068         setAccountAuthenticatorResult(intent.getExtras());
1069         setResult(RESULT_OK, intent);
1070
1071         /// immediately request for the synchronization of the new account
1072         Bundle bundle = new Bundle();
1073         bundle.putBoolean(ContentResolver.SYNC_EXTRAS_MANUAL, true);
1074         ContentResolver.requestSync(mAccount, AccountAuthenticator.AUTHORITY, bundle);
1075     }
1076
1077
1078     /**
1079      * {@inheritDoc}
1080      *
1081      * Necessary to update the contents of the SSL Dialog
1082      *
1083      * TODO move to some common place for all possible untrusted SSL failures
1084      */
1085     @Override
1086     protected void onPrepareDialog(int id, Dialog dialog, Bundle args) {
1087         switch (id) {
1088         case DIALOG_LOGIN_PROGRESS:
1089         case DIALOG_CERT_NOT_SAVED:
1090         case DIALOG_OAUTH2_LOGIN_PROGRESS:
1091             break;
1092         case DIALOG_SSL_VALIDATOR: {
1093             ((SslValidatorDialog)dialog).updateResult(mLastSslUntrustedServerResult);
1094             break;
1095         }
1096         default:
1097             Log_OC.e(TAG, "Incorrect dialog called with id = " + id);
1098         }
1099     }
1100
1101
1102     /**
1103      * {@inheritDoc}
1104      */
1105     @Override
1106     protected Dialog onCreateDialog(int id) {
1107         Dialog dialog = null;
1108         switch (id) {
1109         case DIALOG_LOGIN_PROGRESS: {
1110             /// simple progress dialog
1111             ProgressDialog working_dialog = new ProgressDialog(this);
1112             working_dialog.setMessage(getResources().getString(R.string.auth_trying_to_login));
1113             working_dialog.setIndeterminate(true);
1114             working_dialog.setCancelable(true);
1115             working_dialog
1116             .setOnCancelListener(new DialogInterface.OnCancelListener() {
1117                 @Override
1118                 public void onCancel(DialogInterface dialog) {
1119                     /// TODO study if this is enough
1120                     Log_OC.i(TAG, "Login canceled");
1121                     if (mOperationThread != null) {
1122                         mOperationThread.interrupt();
1123                         finish();
1124                     }
1125                 }
1126             });
1127             dialog = working_dialog;
1128             break;
1129         }
1130         case DIALOG_OAUTH2_LOGIN_PROGRESS: {
1131             ProgressDialog working_dialog = new ProgressDialog(this);
1132             working_dialog.setMessage(String.format("Getting authorization"));
1133             working_dialog.setIndeterminate(true);
1134             working_dialog.setCancelable(true);
1135             working_dialog
1136             .setOnCancelListener(new DialogInterface.OnCancelListener() {
1137                 @Override
1138                 public void onCancel(DialogInterface dialog) {
1139                     Log_OC.i(TAG, "Login canceled");
1140                     finish();
1141                 }
1142             });
1143             dialog = working_dialog;
1144             break;
1145         }
1146         case DIALOG_SSL_VALIDATOR: {
1147             /// TODO start to use new dialog interface, at least for this (it is a FragmentDialog already)
1148             dialog = SslValidatorDialog.newInstance(this, mLastSslUntrustedServerResult, this);
1149             break;
1150         }
1151         case DIALOG_CERT_NOT_SAVED: {
1152             AlertDialog.Builder builder = new AlertDialog.Builder(this);
1153             builder.setMessage(getResources().getString(R.string.ssl_validator_not_saved));
1154             builder.setCancelable(false);
1155             builder.setPositiveButton(R.string.common_ok, new DialogInterface.OnClickListener() {
1156                 @Override
1157                 public void onClick(DialogInterface dialog, int which) {
1158                     dialog.dismiss();
1159                 };
1160             });
1161             dialog = builder.create();
1162             break;
1163         }
1164         default:
1165             Log_OC.e(TAG, "Incorrect dialog called with id = " + id);
1166         }
1167         return dialog;
1168     }
1169
1170
1171     /**
1172      * Starts and activity to open the 'new account' page in the ownCloud web site
1173      *
1174      * @param view      'Account register' button
1175      */
1176     public void onRegisterClick(View view) {
1177         Intent register = new Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.url_account_register)));
1178         setResult(RESULT_CANCELED);
1179         startActivity(register);
1180     }
1181
1182
1183     /**
1184      * Updates the content and visibility state of the icon and text associated
1185      * to the last check on the ownCloud server.
1186      */
1187     private void showServerStatus() {
1188         TextView tv = (TextView) findViewById(R.id.server_status_text);
1189
1190         if (mServerStatusIcon == 0 && mServerStatusText == 0) {
1191             tv.setVisibility(View.INVISIBLE);
1192
1193         } else {
1194             tv.setText(mServerStatusText);
1195             tv.setCompoundDrawablesWithIntrinsicBounds(mServerStatusIcon, 0, 0, 0);
1196             tv.setVisibility(View.VISIBLE);
1197         }
1198
1199     }
1200
1201
1202     /**
1203      * Updates the content and visibility state of the icon and text associated
1204      * to the interactions with the OAuth authorization server.
1205      */
1206     private void showAuthStatus() {
1207         if (mAuthStatusIcon == 0 && mAuthStatusText == 0) {
1208             mAuthStatusLayout.setVisibility(View.INVISIBLE);
1209
1210         } else {
1211             mAuthStatusLayout.setText(mAuthStatusText);
1212             mAuthStatusLayout.setCompoundDrawablesWithIntrinsicBounds(mAuthStatusIcon, 0, 0, 0);
1213             mAuthStatusLayout.setVisibility(View.VISIBLE);
1214         }
1215     }
1216
1217
1218     private void showRefreshButton() {
1219         mRefreshButton.setVisibility(View.VISIBLE);
1220     }
1221
1222     private void hideRefreshButton() {
1223         mRefreshButton.setVisibility(View.GONE);
1224     }
1225
1226     /**
1227      * Called when the refresh button in the input field for ownCloud host is clicked.
1228      *
1229      * Performs a new check on the URL in the input field.
1230      *
1231      * @param view      Refresh 'button'
1232      */
1233     public void onRefreshClick(View view) {
1234         checkOcServer();
1235     }
1236
1237
1238     /**
1239      * Called when the eye icon in the password field is clicked.
1240      *
1241      * Toggles the visibility of the password in the field.
1242      */
1243     public void onViewPasswordClick() {
1244         int selectionStart = mPasswordInput.getSelectionStart();
1245         int selectionEnd = mPasswordInput.getSelectionEnd();
1246         if (isPasswordVisible()) {
1247             hidePassword();
1248         } else {
1249             showPassword();
1250         }
1251         mPasswordInput.setSelection(selectionStart, selectionEnd);
1252     }
1253
1254
1255     /**
1256      * Called when the checkbox for OAuth authorization is clicked.
1257      *
1258      * Hides or shows the input fields for user & password.
1259      *
1260      * @param view      'View password' 'button'
1261      */
1262     public void onCheckClick(View view) {
1263         CheckBox oAuth2Check = (CheckBox)view;
1264         changeViewByOAuth2Check(oAuth2Check.isChecked());
1265
1266     }
1267
1268     /**
1269      * Changes the visibility of input elements depending upon the kind of authorization
1270      * chosen by the user: basic or OAuth
1271      *
1272      * @param checked       'True' when OAuth is selected.
1273      */
1274     public void changeViewByOAuth2Check(Boolean checked) {
1275
1276         if (checked) {
1277             mOAuthAuthEndpointText.setVisibility(View.VISIBLE);
1278             mOAuthTokenEndpointText.setVisibility(View.VISIBLE);
1279             mUsernameInput.setVisibility(View.GONE);
1280             mPasswordInput.setVisibility(View.GONE);
1281         } else {
1282             mOAuthAuthEndpointText.setVisibility(View.GONE);
1283             mOAuthTokenEndpointText.setVisibility(View.GONE);
1284             mUsernameInput.setVisibility(View.VISIBLE);
1285             mPasswordInput.setVisibility(View.VISIBLE);
1286         }
1287
1288     }
1289
1290     /**
1291      * Called from SslValidatorDialog when a new server certificate was correctly saved.
1292      */
1293     public void onSavedCertificate() {
1294         checkOcServer();
1295     }
1296
1297     /**
1298      * Called from SslValidatorDialog when a new server certificate could not be saved
1299      * when the user requested it.
1300      */
1301     @Override
1302     public void onFailedSavingCertificate() {
1303         showDialog(DIALOG_CERT_NOT_SAVED);
1304     }
1305
1306
1307     /**
1308      *  Called when the 'action' button in an IME is pressed ('enter' in software keyboard).
1309      *
1310      *  Used to trigger the authorization check when the user presses 'enter' after writing the password.
1311      */
1312     @Override
1313     public boolean onEditorAction(TextView inputField, int actionId, KeyEvent event) {
1314         if (inputField != null && inputField.equals(mPasswordInput) &&
1315                 actionId == EditorInfo.IME_ACTION_DONE) {
1316             if (mOkButton.isEnabled()) {
1317                 mOkButton.performClick();
1318             }
1319         }
1320         return false;   // always return false to grant that the software keyboard is hidden anyway
1321     }
1322
1323
1324     private abstract static class RightDrawableOnTouchListener implements OnTouchListener  {
1325
1326         private int fuzz = 75;
1327
1328         /**
1329          * {@inheritDoc}
1330          */
1331         @Override
1332         public boolean onTouch(View view, MotionEvent event) {
1333             Drawable rightDrawable = null;
1334             if (view instanceof TextView) {
1335                 Drawable[] drawables = ((TextView)view).getCompoundDrawables();
1336                 if (drawables.length > 2) {
1337                     rightDrawable = drawables[2];
1338                 }
1339             }
1340             if (rightDrawable != null) {
1341                 final int x = (int) event.getX();
1342                 final int y = (int) event.getY();
1343                 final Rect bounds = rightDrawable.getBounds();
1344                 if (x >= (view.getRight() - bounds.width() - fuzz) && x <= (view.getRight() - view.getPaddingRight() + fuzz)
1345                     && y >= (view.getPaddingTop() - fuzz) && y <= (view.getHeight() - view.getPaddingBottom()) + fuzz) {
1346
1347                     return onDrawableTouch(event);
1348                 }
1349             }
1350             return false;
1351         }
1352
1353         public abstract boolean onDrawableTouch(final MotionEvent event);
1354     }
1355
1356 }