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

   1 /* ownCloud Android client application
   2  *   Copyright (C) 2012  Bartek Przybylski
   3  *   Copyright (C) 2012-2013 ownCloud Inc.
   4  *
   5  *   This program is free software: you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License version 2,
   7  *   as published by the Free Software Foundation.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18
  19 package com.owncloud.android.authentication;
  20
  21 import com.owncloud.android.AccountUtils;
  22 import com.owncloud.android.Log_OC;
  23 import com.owncloud.android.ui.dialog.SslValidatorDialog;
  24 import com.owncloud.android.ui.dialog.SslValidatorDialog.OnSslValidatorListener;
  25 import com.owncloud.android.utils.OwnCloudVersion;
  26 import com.owncloud.android.network.OwnCloudClientUtils;
  27 import com.owncloud.android.operations.OwnCloudServerCheckOperation;
  28 import com.owncloud.android.operations.ExistenceCheckOperation;
  29 import com.owncloud.android.operations.OAuth2GetAccessToken;
  30 import com.owncloud.android.operations.OnRemoteOperationListener;
  31 import com.owncloud.android.operations.RemoteOperation;
  32 import com.owncloud.android.operations.RemoteOperationResult;
  33 import com.owncloud.android.operations.RemoteOperationResult.ResultCode;
  34
  35 import android.accounts.Account;
  36 import android.accounts.AccountAuthenticatorActivity;
  37 import android.accounts.AccountManager;
  38 import android.app.AlertDialog;
  39 import android.app.Dialog;
  40 import android.app.ProgressDialog;
  41 import android.content.ContentResolver;
  42 import android.content.DialogInterface;
  43 import android.content.Intent;
  44 import android.content.SharedPreferences;
  45 import android.graphics.Rect;
  46 import android.graphics.drawable.Drawable;
  47 import android.net.Uri;
  48 import android.os.Bundle;
  49 import android.os.Handler;
  50 import android.preference.PreferenceManager;
  51 import android.text.Editable;
  52 import android.text.InputType;
  53 import android.text.TextWatcher;
  54 import android.view.KeyEvent;
  55 import android.view.MotionEvent;
  56 import android.view.View;
  57 import android.view.View.OnFocusChangeListener;
  58 import android.view.View.OnTouchListener;
  59 import android.view.Window;
  60 import android.view.inputmethod.EditorInfo;
  61 import android.widget.CheckBox;
  62 import android.widget.EditText;
  63 import android.widget.Button;
  64 import android.widget.TextView;
  65 import android.widget.Toast;
  66 import android.widget.TextView.OnEditorActionListener;
  67
  68 import com.owncloud.android.R;
  69
  70 import eu.alefzero.webdav.WebdavClient;
  71
  72 /**
  73  * This Activity is used to add an ownCloud account to the App
  74  *
  75  * @author Bartek Przybylski
  76  * @author David A. Velasco
  77  */
  78 public class AuthenticatorActivity extends AccountAuthenticatorActivity
  79 implements  OnRemoteOperationListener, OnSslValidatorListener, OnFocusChangeListener, OnEditorActionListener {
  80
  81     private static final String TAG = AuthenticatorActivity.class.getSimpleName();
  82
  83     public static final String EXTRA_ACCOUNT = "ACCOUNT";
  84     public static final String EXTRA_USER_NAME = "USER_NAME";
  85     public static final String EXTRA_HOST_NAME = "HOST_NAME";
  86     public static final String EXTRA_ACTION = "ACTION";
  87     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 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
 149     /**
 150      * {@inheritDoc}
 151      *
 152      * IMPORTANT ENTRY POINT 1: activity is shown to the user
 153      */
 154     @Override
 155     protected void onCreate(Bundle savedInstanceState) {
 156         super.onCreate(savedInstanceState);
 157         getWindow().requestFeature(Window.FEATURE_NO_TITLE);
 158
 159         /// set view and get references to view elements
 160         setContentView(R.layout.account_setup);
 161         mHostUrlInput = (EditText) findViewById(R.id.hostUrlInput);
 162         mUsernameInput = (EditText) findViewById(R.id.account_username);
 163         mPasswordInput = (EditText) findViewById(R.id.account_password);
 164         mOAuthAuthEndpointText = (TextView)findViewById(R.id.oAuthEntryPoint_1);
 165         mOAuthTokenEndpointText = (TextView)findViewById(R.id.oAuthEntryPoint_2);
 166         mOAuth2Check = (CheckBox) findViewById(R.id.oauth_onOff_check);
 167         mOkButton = findViewById(R.id.buttonOK);
 168         mAuthStatusLayout = (TextView) findViewById(R.id.auth_status_text);
 169
 170         /// complete label for 'register account' button
 171         Button b = (Button) findViewById(R.id.account_register);
 172         if (b != null) {
 173             b.setText(String.format(getString(R.string.auth_register), getString(R.string.app_name)));
 174         }
 175
 176         /// initialization
 177         mAccountMgr = AccountManager.get(this);
 178         mNewCapturedUriFromOAuth2Redirection = null;
 179         mAction = getIntent().getByteExtra(EXTRA_ACTION, ACTION_CREATE);
 180         mAccount = null;
 181         mHostBaseUrl = "";
 182
 183         if (savedInstanceState == null) {
 184             /// connection state and info
 185             mServerStatusText = mServerStatusIcon = 0;
 186             mServerIsValid = false;
 187             mServerIsChecked = false;
 188             mIsSslConn = false;
 189             mAuthStatusText = mAuthStatusIcon = 0;
 190
 191             /// retrieve extras from intent
 192             String tokenType = getIntent().getExtras().getString(AccountAuthenticator.KEY_AUTH_TOKEN_TYPE);
 193             boolean oAuthRequired = AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN.equals(tokenType) || OAUTH_MODE_ON.equals(getString(R.string.oauth2_mode));
 194
 195             mAccount = getIntent().getExtras().getParcelable(EXTRA_ACCOUNT);
 196             if (mAccount != null) {
 197                 String ocVersion = mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_OC_VERSION);
 198                 if (ocVersion != null) {
 199                     mDiscoveredVersion = new OwnCloudVersion(ocVersion);
 200                 }
 201                 mHostBaseUrl = normalizeUrl(mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_OC_BASE_URL));
 202                 mHostUrlInput.setText(mHostBaseUrl);
 203                 String userName = mAccount.name.substring(0, mAccount.name.lastIndexOf('@'));
 204                 mUsernameInput.setText(userName);
 205                 oAuthRequired = (mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_SUPPORTS_OAUTH2) != null);
 206             }
 207             mOAuth2Check.setChecked(oAuthRequired);
 208             changeViewByOAuth2Check(oAuthRequired);
 209             mJustCreated = true;
 210
 211         } else {
 212             /// connection state and info
 213             mServerIsValid = savedInstanceState.getBoolean(KEY_SERVER_VALID);
 214             mServerIsChecked = savedInstanceState.getBoolean(KEY_SERVER_CHECKED);
 215             mServerStatusText = savedInstanceState.getInt(KEY_SERVER_STATUS_TEXT);
 216             mServerStatusIcon = savedInstanceState.getInt(KEY_SERVER_STATUS_ICON);
 217             mIsSslConn = savedInstanceState.getBoolean(KEY_IS_SSL_CONN);
 218             mAuthStatusText = savedInstanceState.getInt(KEY_AUTH_STATUS_TEXT);
 219             mAuthStatusIcon = savedInstanceState.getInt(KEY_AUTH_STATUS_ICON);
 220             if (savedInstanceState.getBoolean(KEY_PASSWORD_VISIBLE, false)) {
 221                 showPassword();
 222             }
 223
 224             /// server data
 225             String ocVersion = savedInstanceState.getString(KEY_OC_VERSION);
 226             if (ocVersion != null) {
 227                 mDiscoveredVersion = new OwnCloudVersion(ocVersion);
 228             }
 229             mHostBaseUrl = savedInstanceState.getString(KEY_HOST_URL_TEXT);
 230
 231             // account data, if updating
 232             mAccount = savedInstanceState.getParcelable(KEY_ACCOUNT);
 233
 234             // check if server check was interrupted by a configuration change
 235             if (savedInstanceState.getBoolean(KEY_SERVER_CHECK_IN_PROGRESS, false)) {
 236                 checkOcServer();
 237             }
 238
 239             // refresh button enabled
 240             mRefreshButtonEnabled = savedInstanceState.getBoolean(KEY_REFRESH_BUTTON_ENABLED);
 241
 242         }
 243
 244         showServerStatus();
 245         showAuthStatus();
 246         if (mServerIsChecked && !mServerIsValid && mRefreshButtonEnabled) showRefreshButton();
 247         mOkButton.setEnabled(mServerIsValid); // state not automatically recovered in configuration changes
 248
 249         if (!OAUTH_MODE_OPTIONAL.equals(getString(R.string.oauth2_mode))) {
 250             mOAuth2Check.setVisibility(View.GONE);
 251         }
 252
 253         if (mAction == ACTION_UPDATE_TOKEN) {
 254             /// lock things that should not change
 255             mHostUrlInput.setEnabled(false);
 256             mHostUrlInput.setFocusable(false);
 257             mUsernameInput.setEnabled(false);
 258             mUsernameInput.setFocusable(false);
 259             mOAuth2Check.setVisibility(View.GONE);
 260             if (!mServerIsValid && mOcServerChkOperation == null) {
 261                 checkOcServer();
 262             }
 263         }
 264
 265         mPasswordInput.setText("");     // clean password to avoid social hacking (disadvantage: password in removed if the device is turned aside)
 266
 267         /// bind view elements to listeners
 268         mHostUrlInput.setOnFocusChangeListener(this);
 269         mHostUrlInput.setOnTouchListener(new RightDrawableOnTouchListener() {
 270             @Override
 271             public boolean onDrawableTouch(final MotionEvent event) {
 272                 if (event.getAction() == MotionEvent.ACTION_UP) {
 273                     AuthenticatorActivity.this.onRefreshClick();
 274                 }
 275                 return true;
 276             }
 277         });
 278         mHostUrlInput.addTextChangedListener(new TextWatcher() {
 279
 280             @Override
 281             public void afterTextChanged(Editable s) {
 282                 if (!mHostBaseUrl.equals(normalizeUrl(mHostUrlInput.getText().toString()))) {
 283                     mOkButton.setEnabled(false);
 284                 }
 285             }
 286
 287             @Override
 288             public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
 289
 290             @Override
 291             public void onTextChanged(CharSequence s, int start, int before, int count) {}
 292
 293         });
 294         mPasswordInput.setOnFocusChangeListener(this);
 295         mPasswordInput.setImeOptions(EditorInfo.IME_ACTION_DONE);
 296         mPasswordInput.setOnEditorActionListener(this);
 297         mPasswordInput.setOnTouchListener(new RightDrawableOnTouchListener() {
 298             @Override
 299             public boolean onDrawableTouch(final MotionEvent event) {
 300                 if (event.getAction() == MotionEvent.ACTION_UP) {
 301                     AuthenticatorActivity.this.onViewPasswordClick();
 302                 }
 303                 return true;
 304             }
 305         });
 306     }
 307
 308     /**
 309      * Saves relevant state before {@link #onPause()}
 310      *
 311      * Do NOT save {@link #mNewCapturedUriFromOAuth2Redirection}; it keeps a temporal flag, intended to defer the
 312      * processing of the redirection caught in {@link #onNewIntent(Intent)} until {@link #onResume()}
 313      *
 314      * See {@link #loadSavedInstanceState(Bundle)}
 315      */
 316     @Override
 317     protected void onSaveInstanceState(Bundle outState) {
 318         super.onSaveInstanceState(outState);
 319
 320         /// connection state and info
 321         outState.putInt(KEY_SERVER_STATUS_TEXT, mServerStatusText);
 322         outState.putInt(KEY_SERVER_STATUS_ICON, mServerStatusIcon);
 323         outState.putBoolean(KEY_SERVER_VALID, mServerIsValid);
 324         outState.putBoolean(KEY_SERVER_CHECKED, mServerIsChecked);
 325         outState.putBoolean(KEY_SERVER_CHECK_IN_PROGRESS, (!mServerIsValid && mOcServerChkOperation != null));
 326         outState.putBoolean(KEY_IS_SSL_CONN, mIsSslConn);
 327         outState.putBoolean(KEY_PASSWORD_VISIBLE, isPasswordVisible());
 328         outState.putInt(KEY_AUTH_STATUS_ICON, mAuthStatusIcon);
 329         outState.putInt(KEY_AUTH_STATUS_TEXT, mAuthStatusText);
 330
 331         /// server data
 332         if (mDiscoveredVersion != null) {
 333             outState.putString(KEY_OC_VERSION, mDiscoveredVersion.toString());
 334         }
 335         outState.putString(KEY_HOST_URL_TEXT, mHostBaseUrl);
 336
 337         /// account data, if updating
 338         if (mAccount != null) {
 339             outState.putParcelable(KEY_ACCOUNT, mAccount);
 340         }
 341
 342         // refresh button enabled
 343         outState.putBoolean(KEY_REFRESH_BUTTON_ENABLED, mRefreshButtonEnabled);
 344
 345     }
 346
 347
 348     /**
 349      * The redirection triggered by the OAuth authentication server as response to the GET AUTHORIZATION request
 350      * is caught here.
 351      *
 352      * To make this possible, this activity needs to be qualified with android:launchMode = "singleTask" in the
 353      * AndroidManifest.xml file.
 354      */
 355     @Override
 356     protected void onNewIntent (Intent intent) {
 357         Log_OC.d(TAG, "onNewIntent()");
 358         Uri data = intent.getData();
 359         if (data != null && data.toString().startsWith(getString(R.string.oauth2_redirect_uri))) {
 360             mNewCapturedUriFromOAuth2Redirection = data;
 361         }
 362     }
 363
 364
 365     /**
 366      * The redirection triggered by the OAuth authentication server as response to the GET AUTHORIZATION, and
 367      * deferred in {@link #onNewIntent(Intent)}, is processed here.
 368      */
 369     @Override
 370     protected void onResume() {
 371         super.onResume();
 372         // the state of mOAuth2Check is automatically recovered between configuration changes, but not before onCreate() finishes; so keep the next lines here
 373         changeViewByOAuth2Check(mOAuth2Check.isChecked());
 374         if (mAction == ACTION_UPDATE_TOKEN && mJustCreated && getIntent().getBooleanExtra(EXTRA_ENFORCED_UPDATE, false)) {
 375             if (mOAuth2Check.isChecked())
 376                 Toast.makeText(this, R.string.auth_expired_oauth_token_toast, Toast.LENGTH_LONG).show();
 377             else
 378                 Toast.makeText(this, R.string.auth_expired_basic_auth_toast, Toast.LENGTH_LONG).show();
 379         }
 380
 381         if (mNewCapturedUriFromOAuth2Redirection != null) {
 382             getOAuth2AccessTokenFromCapturedRedirection();
 383         }
 384
 385         mJustCreated = false;
 386     }
 387
 388
 389     /**
 390      * Parses the redirection with the response to the GET AUTHORIZATION request to the
 391      * oAuth server and requests for the access token (GET ACCESS TOKEN)
 392      */
 393     private void getOAuth2AccessTokenFromCapturedRedirection() {
 394         /// Parse data from OAuth redirection
 395         String queryParameters = mNewCapturedUriFromOAuth2Redirection.getQuery();
 396         mNewCapturedUriFromOAuth2Redirection = null;
 397
 398         /// Showing the dialog with instructions for the user.
 399         showDialog(DIALOG_OAUTH2_LOGIN_PROGRESS);
 400
 401         /// GET ACCESS TOKEN to the oAuth server
 402         RemoteOperation operation = new OAuth2GetAccessToken(   getString(R.string.oauth2_client_id),
 403                 getString(R.string.oauth2_redirect_uri),
 404                 getString(R.string.oauth2_grant_type),
 405                 queryParameters);
 406         //WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(getString(R.string.oauth2_url_endpoint_access)), getApplicationContext());
 407         WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mOAuthTokenEndpointText.getText().toString().trim()), getApplicationContext());
 408         operation.execute(client, this, mHandler);
 409     }
 410
 411
 412
 413     /**
 414      * Handles the change of focus on the text inputs for the server URL and the password
 415      */
 416     public void onFocusChange(View view, boolean hasFocus) {
 417         if (view.getId() == R.id.hostUrlInput) {
 418             if (!hasFocus) {
 419                 onUrlInputFocusLost((TextView) view);
 420                 if (!mServerIsValid) {
 421                     showRefreshButton();
 422                 }
 423             }
 424             else {
 425                 hideRefreshButton();
 426             }
 427
 428         } else if (view.getId() == R.id.account_password) {
 429             onPasswordFocusChanged((TextView) view, hasFocus);
 430         }
 431     }
 432
 433
 434     /**
 435      * Handles changes in focus on the text input for the server URL.
 436      *
 437      * IMPORTANT ENTRY POINT 2: When (!hasFocus), user wrote the server URL and changed to
 438      * other field. The operation to check the existence of the server in the entered URL is
 439      * started.
 440      *
 441      * When hasFocus:    user 'comes back' to write again the server URL.
 442      *
 443      * @param hostInput     TextView with the URL input field receiving the change of focus.
 444      */
 445     private void onUrlInputFocusLost(TextView hostInput) {
 446         if (!mHostBaseUrl.equals(normalizeUrl(mHostUrlInput.getText().toString()))) {
 447             checkOcServer();
 448         } else {
 449             mOkButton.setEnabled(mServerIsValid);
 450         }
 451     }
 452
 453
 454     private void checkOcServer() {
 455         String uri = trimUrlWebdav(mHostUrlInput.getText().toString().trim());
 456         mServerIsValid = false;
 457         mServerIsChecked = false;
 458         mOkButton.setEnabled(false);
 459         mDiscoveredVersion = null;
 460         hideRefreshButton();
 461         if (uri.length() != 0) {
 462             mServerStatusText = R.string.auth_testing_connection;
 463             mServerStatusIcon = R.drawable.progress_small;
 464             showServerStatus();
 465             mOcServerChkOperation = new  OwnCloudServerCheckOperation(uri, this);
 466             WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(uri), this);
 467             mOperationThread = mOcServerChkOperation.execute(client, this, mHandler);
 468         } else {
 469             mServerStatusText = 0;
 470             mServerStatusIcon = 0;
 471             showServerStatus();
 472         }
 473     }
 474
 475
 476     /**
 477      * Handles changes in focus on the text input for the password (basic authorization).
 478      *
 479      * When (hasFocus), the button to toggle password visibility is shown.
 480      *
 481      * When (!hasFocus), the button is made invisible and the password is hidden.
 482      *
 483      * @param passwordInput    TextView with the password input field receiving the change of focus.
 484      * @param hasFocus          'True' if focus is received, 'false' if is lost
 485      */
 486     private void onPasswordFocusChanged(TextView passwordInput, boolean hasFocus) {
 487         if (hasFocus) {
 488             showViewPasswordButton();
 489         } else {
 490             hidePassword();
 491             hidePasswordButton();
 492         }
 493     }
 494
 495
 496     private void showViewPasswordButton() {
 497         //int drawable = android.R.drawable.ic_menu_view;
 498         int drawable = R.drawable.ic_view;
 499         if (isPasswordVisible()) {
 500             //drawable = android.R.drawable.ic_secure;
 501             drawable = R.drawable.ic_hide;
 502         }
 503         mPasswordInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, drawable, 0);
 504     }
 505
 506     private boolean isPasswordVisible() {
 507         return ((mPasswordInput.getInputType() & InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD) == InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
 508     }
 509
 510     private void hidePasswordButton() {
 511         mPasswordInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
 512     }
 513
 514     private void showPassword() {
 515         mPasswordInput.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
 516         showViewPasswordButton();
 517     }
 518
 519     private void hidePassword() {
 520         mPasswordInput.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
 521         showViewPasswordButton();
 522     }
 523
 524
 525     /**
 526      * Cancels the authenticator activity
 527      *
 528      * IMPORTANT ENTRY POINT 3: Never underestimate the importance of cancellation
 529      *
 530      * This method is bound in the layout/acceoun_setup.xml resource file.
 531      *
 532      * @param view      Cancel button
 533      */
 534     public void onCancelClick(View view) {
 535         setResult(RESULT_CANCELED);     // TODO review how is this related to AccountAuthenticator (debugging)
 536         finish();
 537     }
 538
 539
 540
 541     /**
 542      * Checks the credentials of the user in the root of the ownCloud server
 543      * before creating a new local account.
 544      *
 545      * For basic authorization, a check of existence of the root folder is
 546      * performed.
 547      *
 548      * For OAuth, starts the flow to get an access token; the credentials test
 549      * is postponed until it is available.
 550      *
 551      * IMPORTANT ENTRY POINT 4
 552      *
 553      * @param view      OK button
 554      */
 555     public void onOkClick(View view) {
 556         // this check should be unnecessary
 557         if (mDiscoveredVersion == null || !mDiscoveredVersion.isVersionValid()  || mHostBaseUrl == null || mHostBaseUrl.length() == 0) {
 558             mServerStatusIcon = R.drawable.common_error;
 559             mServerStatusText = R.string.auth_wtf_reenter_URL;
 560             showServerStatus();
 561             mOkButton.setEnabled(false);
 562             Log_OC.wtf(TAG,  "The user was allowed to click 'connect' to an unchecked server!!");
 563             return;
 564         }
 565
 566         if (mOAuth2Check.isChecked()) {
 567             startOauthorization();
 568
 569         } else {
 570             checkBasicAuthorization();
 571         }
 572     }
 573
 574
 575     /**
 576      * Tests the credentials entered by the user performing a check of existence on
 577      * the root folder of the ownCloud server.
 578      */
 579     private void checkBasicAuthorization() {
 580         /// get the path to the root folder through WebDAV from the version server
 581         String webdav_path = AccountUtils.getWebdavPath(mDiscoveredVersion, false);
 582
 583         /// get basic credentials entered by user
 584         String username = mUsernameInput.getText().toString();
 585         String password = mPasswordInput.getText().toString();
 586
 587         /// be gentle with the user
 588         showDialog(DIALOG_LOGIN_PROGRESS);
 589
 590         /// test credentials accessing the root folder
 591         mAuthCheckOperation = new  ExistenceCheckOperation("", this, false);
 592         WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mHostBaseUrl + webdav_path), this);
 593         client.setBasicCredentials(username, password);
 594         mOperationThread = mAuthCheckOperation.execute(client, this, mHandler);
 595     }
 596
 597
 598     /**
 599      * Starts the OAuth 'grant type' flow to get an access token, with
 600      * a GET AUTHORIZATION request to the BUILT-IN authorization server.
 601      */
 602     private void startOauthorization() {
 603         // be gentle with the user
 604         mAuthStatusIcon = R.drawable.progress_small;
 605         mAuthStatusText = R.string.oauth_login_connection;
 606         showAuthStatus();
 607
 608         // GET AUTHORIZATION request
 609         //Uri uri = Uri.parse(getString(R.string.oauth2_url_endpoint_auth));
 610         Uri uri = Uri.parse(mOAuthAuthEndpointText.getText().toString().trim());
 611         Uri.Builder uriBuilder = uri.buildUpon();
 612         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_RESPONSE_TYPE, getString(R.string.oauth2_response_type));
 613         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_REDIRECT_URI, getString(R.string.oauth2_redirect_uri));
 614         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_CLIENT_ID, getString(R.string.oauth2_client_id));
 615         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_SCOPE, getString(R.string.oauth2_scope));
 616         //uriBuilder.appendQueryParameter(OAuth2Constants.KEY_STATE, whateverwewant);
 617         uri = uriBuilder.build();
 618         Log_OC.d(TAG, "Starting browser to view " + uri.toString());
 619         Intent i = new Intent(Intent.ACTION_VIEW, uri);
 620         startActivity(i);
 621     }
 622
 623
 624     /**
 625      * Callback method invoked when a RemoteOperation executed by this Activity finishes.
 626      *
 627      * Dispatches the operation flow to the right method.
 628      */
 629     @Override
 630     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 631
 632         if (operation instanceof OwnCloudServerCheckOperation) {
 633             onOcServerCheckFinish((OwnCloudServerCheckOperation) operation, result);
 634
 635         } else if (operation instanceof OAuth2GetAccessToken) {
 636             onGetOAuthAccessTokenFinish((OAuth2GetAccessToken)operation, result);
 637
 638         } else if (operation instanceof ExistenceCheckOperation)  {
 639             onAuthorizationCheckFinish((ExistenceCheckOperation)operation, result);
 640
 641         }
 642     }
 643
 644
 645     /**
 646      * Processes the result of the server check performed when the user finishes the enter of the
 647      * server URL.
 648      *
 649      * @param operation     Server check performed.
 650      * @param result        Result of the check.
 651      */
 652     private void onOcServerCheckFinish(OwnCloudServerCheckOperation operation, RemoteOperationResult result) {
 653         if (operation.equals(mOcServerChkOperation)) {
 654             /// save result state
 655             mServerIsChecked = true;
 656             mServerIsValid = result.isSuccess();
 657             mIsSslConn = (result.getCode() == ResultCode.OK_SSL);
 658             mOcServerChkOperation = null;
 659
 660             /// update status icon and text
 661             if (mServerIsValid) {
 662                 hideRefreshButton();
 663             } else {
 664                 showRefreshButton();
 665             }
 666             updateServerStatusIconAndText(result);
 667             showServerStatus();
 668
 669             /// very special case (TODO: move to a common place for all the remote operations)
 670             if (result.getCode() == ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED) {
 671                 mLastSslUntrustedServerResult = result;
 672                 showDialog(DIALOG_SSL_VALIDATOR);
 673             }
 674
 675             /// retrieve discovered version and normalize server URL
 676             mDiscoveredVersion = operation.getDiscoveredVersion();
 677             mHostBaseUrl = normalizeUrl(mHostUrlInput.getText().toString());
 678
 679             /// allow or not the user try to access the server
 680             mOkButton.setEnabled(mServerIsValid);
 681
 682         }   // else nothing ; only the last check operation is considered;
 683         // multiple can be triggered if the user amends a URL before a previous check can be triggered
 684     }
 685
 686
 687     private String normalizeUrl(String url) {
 688         if (url != null && url.length() > 0) {
 689             url = url.trim();
 690             if (!url.toLowerCase().startsWith("http://") &&
 691                     !url.toLowerCase().startsWith("https://")) {
 692                 if (mIsSslConn) {
 693                     url = "https://" + url;
 694                 } else {
 695                     url = "http://" + url;
 696                 }
 697             }
 698
 699             // OC-208: Add suffix remote.php/webdav to normalize (OC-34)
 700             url = trimUrlWebdav(url);
 701
 702             if (url.endsWith("/")) {
 703                 url = url.substring(0, url.length() - 1);
 704             }
 705
 706         }
 707         Log_OC.d(TAG, "URL Normalize " + url);
 708         return (url != null ? url : "");
 709     }
 710
 711
 712     private String trimUrlWebdav(String url){
 713         if(url.toLowerCase().endsWith(AccountUtils.WEBDAV_PATH_4_0)){
 714             url = url.substring(0, url.length() - AccountUtils.WEBDAV_PATH_4_0.length());
 715         } else if(url.toLowerCase().endsWith(AccountUtils.WEBDAV_PATH_2_0)){
 716             url = url.substring(0, url.length() - AccountUtils.WEBDAV_PATH_2_0.length());
 717         } else if (url.toLowerCase().endsWith(AccountUtils.WEBDAV_PATH_1_2)){
 718             url = url.substring(0, url.length() - AccountUtils.WEBDAV_PATH_1_2.length());
 719         }
 720         return (url != null ? url : "");
 721     }
 722
 723
 724     /**
 725      * Chooses the right icon and text to show to the user for the received operation result.
 726      *
 727      * @param result    Result of a remote operation performed in this activity
 728      */
 729     private void updateServerStatusIconAndText(RemoteOperationResult result) {
 730         mServerStatusIcon = R.drawable.common_error;    // the most common case in the switch below
 731
 732         switch (result.getCode()) {
 733         case OK_SSL:
 734             mServerStatusIcon = android.R.drawable.ic_secure;
 735             mServerStatusText = R.string.auth_secure_connection;
 736             break;
 737
 738         case OK_NO_SSL:
 739         case OK:
 740             if (mHostUrlInput.getText().toString().trim().toLowerCase().startsWith("http://") ) {
 741                 mServerStatusText = R.string.auth_connection_established;
 742                 mServerStatusIcon = R.drawable.ic_ok;
 743             } else {
 744                 mServerStatusText = R.string.auth_nossl_plain_ok_title;
 745                 mServerStatusIcon = android.R.drawable.ic_partial_secure;
 746             }
 747             break;
 748
 749         case NO_NETWORK_CONNECTION:
 750             mServerStatusIcon = R.drawable.no_network;
 751             mServerStatusText = R.string.auth_no_net_conn_title;
 752             break;
 753
 754         case SSL_RECOVERABLE_PEER_UNVERIFIED:
 755             mServerStatusText = R.string.auth_ssl_unverified_server_title;
 756             break;
 757         case BAD_OC_VERSION:
 758             mServerStatusText = R.string.auth_bad_oc_version_title;
 759             break;
 760         case WRONG_CONNECTION:
 761             mServerStatusText = R.string.auth_wrong_connection_title;
 762             break;
 763         case TIMEOUT:
 764             mServerStatusText = R.string.auth_timeout_title;
 765             break;
 766         case INCORRECT_ADDRESS:
 767             mServerStatusText = R.string.auth_incorrect_address_title;
 768             break;
 769         case SSL_ERROR:
 770             mServerStatusText = R.string.auth_ssl_general_error_title;
 771             break;
 772         case UNAUTHORIZED:
 773             mServerStatusText = R.string.auth_unauthorized;
 774             break;
 775         case HOST_NOT_AVAILABLE:
 776             mServerStatusText = R.string.auth_unknown_host_title;
 777             break;
 778         case INSTANCE_NOT_CONFIGURED:
 779             mServerStatusText = R.string.auth_not_configured_title;
 780             break;
 781         case FILE_NOT_FOUND:
 782             mServerStatusText = R.string.auth_incorrect_path_title;
 783             break;
 784         case OAUTH2_ERROR:
 785             mServerStatusText = R.string.auth_oauth_error;
 786             break;
 787         case OAUTH2_ERROR_ACCESS_DENIED:
 788             mServerStatusText = R.string.auth_oauth_error_access_denied;
 789             break;
 790         case UNHANDLED_HTTP_CODE:
 791         case UNKNOWN_ERROR:
 792             mServerStatusText = R.string.auth_unknown_error_title;
 793             break;
 794         default:
 795             mServerStatusText = 0;
 796             mServerStatusIcon = 0;
 797         }
 798     }
 799
 800
 801     /**
 802      * Chooses the right icon and text to show to the user for the received operation result.
 803      *
 804      * @param result    Result of a remote operation performed in this activity
 805      */
 806     private void updateAuthStatusIconAndText(RemoteOperationResult result) {
 807         mAuthStatusIcon = R.drawable.common_error;    // the most common case in the switch below
 808
 809         switch (result.getCode()) {
 810         case OK_SSL:
 811             mAuthStatusIcon = android.R.drawable.ic_secure;
 812             mAuthStatusText = R.string.auth_secure_connection;
 813             break;
 814
 815         case OK_NO_SSL:
 816         case OK:
 817             if (mHostUrlInput.getText().toString().trim().toLowerCase().startsWith("http://") ) {
 818                 mAuthStatusText = R.string.auth_connection_established;
 819                 mAuthStatusIcon = R.drawable.ic_ok;
 820             } else {
 821                 mAuthStatusText = R.string.auth_nossl_plain_ok_title;
 822                 mAuthStatusIcon = android.R.drawable.ic_partial_secure;
 823             }
 824             break;
 825
 826         case NO_NETWORK_CONNECTION:
 827             mAuthStatusIcon = R.drawable.no_network;
 828             mAuthStatusText = R.string.auth_no_net_conn_title;
 829             break;
 830
 831         case SSL_RECOVERABLE_PEER_UNVERIFIED:
 832             mAuthStatusText = R.string.auth_ssl_unverified_server_title;
 833             break;
 834         case BAD_OC_VERSION:
 835             mAuthStatusText = R.string.auth_bad_oc_version_title;
 836             break;
 837         case WRONG_CONNECTION:
 838             mAuthStatusText = R.string.auth_wrong_connection_title;
 839             break;
 840         case TIMEOUT:
 841             mAuthStatusText = R.string.auth_timeout_title;
 842             break;
 843         case INCORRECT_ADDRESS:
 844             mAuthStatusText = R.string.auth_incorrect_address_title;
 845             break;
 846         case SSL_ERROR:
 847             mAuthStatusText = R.string.auth_ssl_general_error_title;
 848             break;
 849         case UNAUTHORIZED:
 850             mAuthStatusText = R.string.auth_unauthorized;
 851             break;
 852         case HOST_NOT_AVAILABLE:
 853             mAuthStatusText = R.string.auth_unknown_host_title;
 854             break;
 855         case INSTANCE_NOT_CONFIGURED:
 856             mAuthStatusText = R.string.auth_not_configured_title;
 857             break;
 858         case FILE_NOT_FOUND:
 859             mAuthStatusText = R.string.auth_incorrect_path_title;
 860             break;
 861         case OAUTH2_ERROR:
 862             mAuthStatusText = R.string.auth_oauth_error;
 863             break;
 864         case OAUTH2_ERROR_ACCESS_DENIED:
 865             mAuthStatusText = R.string.auth_oauth_error_access_denied;
 866             break;
 867         case UNHANDLED_HTTP_CODE:
 868         case UNKNOWN_ERROR:
 869             mAuthStatusText = R.string.auth_unknown_error_title;
 870             break;
 871         default:
 872             mAuthStatusText = 0;
 873             mAuthStatusIcon = 0;
 874         }
 875     }
 876
 877
 878     /**
 879      * Processes the result of the request for and access token send
 880      * to an OAuth authorization server.
 881      *
 882      * @param operation     Operation performed requesting the access token.
 883      * @param result        Result of the operation.
 884      */
 885     private void onGetOAuthAccessTokenFinish(OAuth2GetAccessToken operation, RemoteOperationResult result) {
 886         try {
 887             dismissDialog(DIALOG_OAUTH2_LOGIN_PROGRESS);
 888         } catch (IllegalArgumentException e) {
 889             // NOTHING TO DO ; can't find out what situation that leads to the exception in this code, but user logs signal that it happens
 890         }
 891
 892         String webdav_path = AccountUtils.getWebdavPath(mDiscoveredVersion, true);
 893         if (result.isSuccess() && webdav_path != null) {
 894             /// be gentle with the user
 895             showDialog(DIALOG_LOGIN_PROGRESS);
 896
 897             /// time to test the retrieved access token on the ownCloud server
 898             mOAuthAccessToken = ((OAuth2GetAccessToken)operation).getResultTokenMap().get(OAuth2Constants.KEY_ACCESS_TOKEN);
 899             Log_OC.d(TAG, "Got ACCESS TOKEN: " + mOAuthAccessToken);
 900             mAuthCheckOperation = new ExistenceCheckOperation("", this, false);
 901             WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mHostBaseUrl + webdav_path), this);
 902             client.setBearerCredentials(mOAuthAccessToken);
 903             mAuthCheckOperation.execute(client, this, mHandler);
 904
 905         } else {
 906             updateAuthStatusIconAndText(result);
 907             showAuthStatus();
 908             Log_OC.d(TAG, "Access failed: " + result.getLogMessage());
 909         }
 910     }
 911
 912
 913     /**
 914      * Processes the result of the access check performed to try the user credentials.
 915      *
 916      * Creates a new account through the AccountManager.
 917      *
 918      * @param operation     Access check performed.
 919      * @param result        Result of the operation.
 920      */
 921     private void onAuthorizationCheckFinish(ExistenceCheckOperation operation, RemoteOperationResult result) {
 922         try {
 923             dismissDialog(DIALOG_LOGIN_PROGRESS);
 924         } catch (IllegalArgumentException e) {
 925             // NOTHING TO DO ; can't find out what situation that leads to the exception in this code, but user logs signal that it happens
 926         }
 927
 928         if (result.isSuccess()) {
 929             Log_OC.d(TAG, "Successful access - time to save the account");
 930
 931             if (mAction == ACTION_CREATE) {
 932                 createAccount();
 933
 934             } else {
 935                 updateToken();
 936             }
 937
 938             finish();
 939
 940         } else if (result.isServerFail() || result.isException()) {
 941             /// if server fail or exception in authorization, the UI is updated as when a server check failed
 942             mServerIsChecked = true;
 943             mServerIsValid = false;
 944             mIsSslConn = false;
 945             mOcServerChkOperation = null;
 946             mDiscoveredVersion = null;
 947             mHostBaseUrl = normalizeUrl(mHostUrlInput.getText().toString());
 948
 949             // update status icon and text
 950             updateServerStatusIconAndText(result);
 951             showServerStatus();
 952             mAuthStatusIcon = 0;
 953             mAuthStatusText = 0;
 954             showAuthStatus();
 955
 956             // update input controls state
 957             showRefreshButton();
 958             mOkButton.setEnabled(false);
 959
 960             // very special case (TODO: move to a common place for all the remote operations) (dangerous here?)
 961             if (result.getCode() == ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED) {
 962                 mLastSslUntrustedServerResult = result;
 963                 showDialog(DIALOG_SSL_VALIDATOR);
 964             }
 965
 966         } else {    // authorization fail due to client side - probably wrong credentials
 967             updateAuthStatusIconAndText(result);
 968             showAuthStatus();
 969             Log_OC.d(TAG, "Access failed: " + result.getLogMessage());
 970         }
 971     }
 972
 973
 974     /**
 975      * Sets the proper response to get that the Account Authenticator that started this activity saves
 976      * a new authorization token for mAccount.
 977      */
 978     private void updateToken() {
 979         Bundle response = new Bundle();
 980         response.putString(AccountManager.KEY_ACCOUNT_NAME, mAccount.name);
 981         response.putString(AccountManager.KEY_ACCOUNT_TYPE, mAccount.type);
 982         boolean isOAuth = mOAuth2Check.isChecked();
 983         if (isOAuth) {
 984             response.putString(AccountManager.KEY_AUTHTOKEN, mOAuthAccessToken);
 985             // the next line is necessary; by now, notifications are calling directly to the AuthenticatorActivity to update, without AccountManager intervention
 986             mAccountMgr.setAuthToken(mAccount, AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN, mOAuthAccessToken);
 987         } else {
 988             response.putString(AccountManager.KEY_AUTHTOKEN, mPasswordInput.getText().toString());
 989             mAccountMgr.setPassword(mAccount, mPasswordInput.getText().toString());
 990         }
 991         setAccountAuthenticatorResult(response);
 992     }
 993
 994
 995     /**
 996      * Creates a new account through the Account Authenticator that started this activity.
 997      *
 998      * This makes the account permanent.
 999      *
1000      * TODO Decide how to name the OAuth accounts
1001      */
1002     private void createAccount() {
1003         /// create and save new ownCloud account
1004         boolean isOAuth = mOAuth2Check.isChecked();
1005
1006         Uri uri = Uri.parse(mHostBaseUrl);
1007         String username = mUsernameInput.getText().toString().trim();
1008         if (isOAuth) {
1009             username = "OAuth_user" + (new java.util.Random(System.currentTimeMillis())).nextLong();
1010         }
1011         String accountName = username + "@" + uri.getHost();
1012         if (uri.getPort() >= 0) {
1013             accountName += ":" + uri.getPort();
1014         }
1015         mAccount = new Account(accountName, AccountAuthenticator.ACCOUNT_TYPE);
1016         if (isOAuth) {
1017             mAccountMgr.addAccountExplicitly(mAccount, "", null);  // with our implementation, the password is never input in the app
1018         } else {
1019             mAccountMgr.addAccountExplicitly(mAccount, mPasswordInput.getText().toString(), null);
1020         }
1021
1022         /// add the new account as default in preferences, if there is none already
1023         Account defaultAccount = AccountUtils.getCurrentOwnCloudAccount(this);
1024         if (defaultAccount == null) {
1025             SharedPreferences.Editor editor = PreferenceManager
1026                     .getDefaultSharedPreferences(this).edit();
1027             editor.putString("select_oc_account", accountName);
1028             editor.commit();
1029         }
1030
1031         /// prepare result to return to the Authenticator
1032         //  TODO check again what the Authenticator makes with it; probably has the same effect as addAccountExplicitly, but it's not well done
1033         final Intent intent = new Intent();
1034         intent.putExtra(AccountManager.KEY_ACCOUNT_TYPE,    AccountAuthenticator.ACCOUNT_TYPE);
1035         intent.putExtra(AccountManager.KEY_ACCOUNT_NAME,    mAccount.name);
1036         if (!isOAuth)
1037             intent.putExtra(AccountManager.KEY_AUTHTOKEN,   AccountAuthenticator.ACCOUNT_TYPE); // TODO check this; not sure it's right; maybe
1038         intent.putExtra(AccountManager.KEY_USERDATA,        username);
1039         if (isOAuth) {
1040             mAccountMgr.setAuthToken(mAccount, AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN, mOAuthAccessToken);
1041         }
1042         /// add user data to the new account; TODO probably can be done in the last parameter addAccountExplicitly, or in KEY_USERDATA
1043         mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_OC_VERSION,    mDiscoveredVersion.toString());
1044         mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_OC_BASE_URL,   mHostBaseUrl);
1045         if (isOAuth)
1046             mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_SUPPORTS_OAUTH2, "TRUE");  // TODO this flag should be unnecessary
1047
1048         setAccountAuthenticatorResult(intent.getExtras());
1049         setResult(RESULT_OK, intent);
1050
1051         /// immediately request for the synchronization of the new account
1052         Bundle bundle = new Bundle();
1053         bundle.putBoolean(ContentResolver.SYNC_EXTRAS_MANUAL, true);
1054         ContentResolver.requestSync(mAccount, AccountAuthenticator.AUTHORITY, bundle);
1055     }
1056
1057
1058     /**
1059      * {@inheritDoc}
1060      *
1061      * Necessary to update the contents of the SSL Dialog
1062      *
1063      * TODO move to some common place for all possible untrusted SSL failures
1064      */
1065     @Override
1066     protected void onPrepareDialog(int id, Dialog dialog, Bundle args) {
1067         switch (id) {
1068         case DIALOG_LOGIN_PROGRESS:
1069         case DIALOG_CERT_NOT_SAVED:
1070         case DIALOG_OAUTH2_LOGIN_PROGRESS:
1071             break;
1072         case DIALOG_SSL_VALIDATOR: {
1073             ((SslValidatorDialog)dialog).updateResult(mLastSslUntrustedServerResult);
1074             break;
1075         }
1076         default:
1077             Log_OC.e(TAG, "Incorrect dialog called with id = " + id);
1078         }
1079     }
1080
1081
1082     /**
1083      * {@inheritDoc}
1084      */
1085     @Override
1086     protected Dialog onCreateDialog(int id) {
1087         Dialog dialog = null;
1088         switch (id) {
1089         case DIALOG_LOGIN_PROGRESS: {
1090             /// simple progress dialog
1091             ProgressDialog working_dialog = new ProgressDialog(this);
1092             working_dialog.setMessage(getResources().getString(R.string.auth_trying_to_login));
1093             working_dialog.setIndeterminate(true);
1094             working_dialog.setCancelable(true);
1095             working_dialog
1096             .setOnCancelListener(new DialogInterface.OnCancelListener() {
1097                 @Override
1098                 public void onCancel(DialogInterface dialog) {
1099                     /// TODO study if this is enough
1100                     Log_OC.i(TAG, "Login canceled");
1101                     if (mOperationThread != null) {
1102                         mOperationThread.interrupt();
1103                         finish();
1104                     }
1105                 }
1106             });
1107             dialog = working_dialog;
1108             break;
1109         }
1110         case DIALOG_OAUTH2_LOGIN_PROGRESS: {
1111             ProgressDialog working_dialog = new ProgressDialog(this);
1112             working_dialog.setMessage(String.format("Getting authorization"));
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                     Log_OC.i(TAG, "Login canceled");
1120                     finish();
1121                 }
1122             });
1123             dialog = working_dialog;
1124             break;
1125         }
1126         case DIALOG_SSL_VALIDATOR: {
1127             /// TODO start to use new dialog interface, at least for this (it is a FragmentDialog already)
1128             dialog = SslValidatorDialog.newInstance(this, mLastSslUntrustedServerResult, this);
1129             break;
1130         }
1131         case DIALOG_CERT_NOT_SAVED: {
1132             AlertDialog.Builder builder = new AlertDialog.Builder(this);
1133             builder.setMessage(getResources().getString(R.string.ssl_validator_not_saved));
1134             builder.setCancelable(false);
1135             builder.setPositiveButton(R.string.common_ok, new DialogInterface.OnClickListener() {
1136                 @Override
1137                 public void onClick(DialogInterface dialog, int which) {
1138                     dialog.dismiss();
1139                 };
1140             });
1141             dialog = builder.create();
1142             break;
1143         }
1144         default:
1145             Log_OC.e(TAG, "Incorrect dialog called with id = " + id);
1146         }
1147         return dialog;
1148     }
1149
1150
1151     /**
1152      * Starts and activity to open the 'new account' page in the ownCloud web site
1153      *
1154      * @param view      'Account register' button
1155      */
1156     public void onRegisterClick(View view) {
1157         Intent register = new Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.url_account_register)));
1158         setResult(RESULT_CANCELED);
1159         startActivity(register);
1160     }
1161
1162
1163     /**
1164      * Updates the content and visibility state of the icon and text associated
1165      * to the last check on the ownCloud server.
1166      */
1167     private void showServerStatus() {
1168         TextView tv = (TextView) findViewById(R.id.server_status_text);
1169
1170         if (mServerStatusIcon == 0 && mServerStatusText == 0) {
1171             tv.setVisibility(View.INVISIBLE);
1172
1173         } else {
1174             tv.setText(mServerStatusText);
1175             tv.setCompoundDrawablesWithIntrinsicBounds(mServerStatusIcon, 0, 0, 0);
1176             tv.setVisibility(View.VISIBLE);
1177         }
1178
1179     }
1180
1181
1182     /**
1183      * Updates the content and visibility state of the icon and text associated
1184      * to the interactions with the OAuth authorization server.
1185      */
1186     private void showAuthStatus() {
1187         if (mAuthStatusIcon == 0 && mAuthStatusText == 0) {
1188             mAuthStatusLayout.setVisibility(View.INVISIBLE);
1189
1190         } else {
1191             mAuthStatusLayout.setText(mAuthStatusText);
1192             mAuthStatusLayout.setCompoundDrawablesWithIntrinsicBounds(mAuthStatusIcon, 0, 0, 0);
1193             mAuthStatusLayout.setVisibility(View.VISIBLE);
1194         }
1195     }
1196
1197
1198     private void showRefreshButton() {
1199         mHostUrlInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, R.drawable.ic_action_refresh_black, 0);
1200         mRefreshButtonEnabled = true;
1201     }
1202
1203     private void hideRefreshButton() {
1204         mHostUrlInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
1205         mRefreshButtonEnabled = false;
1206     }
1207
1208     /**
1209      * Called when the refresh button in the input field for ownCloud host is clicked.
1210      *
1211      * Performs a new check on the URL in the input field.
1212      *
1213      * @param view      Refresh 'button'
1214      */
1215     public void onRefreshClick() {
1216         checkOcServer();
1217     }
1218
1219
1220     /**
1221      * Called when the eye icon in the password field is clicked.
1222      *
1223      * Toggles the visibility of the password in the field.
1224      */
1225     public void onViewPasswordClick() {
1226         int selectionStart = mPasswordInput.getSelectionStart();
1227         int selectionEnd = mPasswordInput.getSelectionEnd();
1228         if (isPasswordVisible()) {
1229             hidePassword();
1230         } else {
1231             showPassword();
1232         }
1233         mPasswordInput.setSelection(selectionStart, selectionEnd);
1234     }
1235
1236
1237     /**
1238      * Called when the checkbox for OAuth authorization is clicked.
1239      *
1240      * Hides or shows the input fields for user & password.
1241      *
1242      * @param view      'View password' 'button'
1243      */
1244     public void onCheckClick(View view) {
1245         CheckBox oAuth2Check = (CheckBox)view;
1246         changeViewByOAuth2Check(oAuth2Check.isChecked());
1247
1248     }
1249
1250     /**
1251      * Changes the visibility of input elements depending upon the kind of authorization
1252      * chosen by the user: basic or OAuth
1253      *
1254      * @param checked       'True' when OAuth is selected.
1255      */
1256     public void changeViewByOAuth2Check(Boolean checked) {
1257
1258         if (checked) {
1259             mOAuthAuthEndpointText.setVisibility(View.VISIBLE);
1260             mOAuthTokenEndpointText.setVisibility(View.VISIBLE);
1261             mUsernameInput.setVisibility(View.GONE);
1262             mPasswordInput.setVisibility(View.GONE);
1263         } else {
1264             mOAuthAuthEndpointText.setVisibility(View.GONE);
1265             mOAuthTokenEndpointText.setVisibility(View.GONE);
1266             mUsernameInput.setVisibility(View.VISIBLE);
1267             mPasswordInput.setVisibility(View.VISIBLE);
1268         }
1269
1270     }
1271
1272     /**
1273      * Called from SslValidatorDialog when a new server certificate was correctly saved.
1274      */
1275     public void onSavedCertificate() {
1276         mOperationThread = mOcServerChkOperation.retry(this, mHandler);
1277     }
1278
1279     /**
1280      * Called from SslValidatorDialog when a new server certificate could not be saved
1281      * when the user requested it.
1282      */
1283     @Override
1284     public void onFailedSavingCertificate() {
1285         showDialog(DIALOG_CERT_NOT_SAVED);
1286     }
1287
1288
1289     /**
1290      *  Called when the 'action' button in an IME is pressed ('enter' in software keyboard).
1291      *
1292      *  Used to trigger the authorization check when the user presses 'enter' after writing the password.
1293      */
1294     @Override
1295     public boolean onEditorAction(TextView inputField, int actionId, KeyEvent event) {
1296         if (inputField != null && inputField.equals(mPasswordInput) &&
1297                 actionId == EditorInfo.IME_ACTION_DONE) {
1298             if (mOkButton.isEnabled()) {
1299                 mOkButton.performClick();
1300             }
1301         }
1302         return false;   // always return false to grant that the software keyboard is hidden anyway
1303     }
1304
1305
1306     private abstract static class RightDrawableOnTouchListener implements OnTouchListener  {
1307
1308         private int fuzz = 75;
1309
1310         /**
1311          * {@inheritDoc}
1312          */
1313         @Override
1314         public boolean onTouch(View view, MotionEvent event) {
1315             Drawable rightDrawable = null;
1316             if (view instanceof TextView) {
1317                 Drawable[] drawables = ((TextView)view).getCompoundDrawables();
1318                 if (drawables.length > 2) {
1319                     rightDrawable = drawables[2];
1320                 }
1321             }
1322             if (rightDrawable != null) {
1323                 final int x = (int) event.getX();
1324                 final int y = (int) event.getY();
1325                 final Rect bounds = rightDrawable.getBounds();
1326                 if (x >= (view.getRight() - bounds.width() - fuzz) && x <= (view.getRight() - view.getPaddingRight() + fuzz)
1327                     && y >= (view.getPaddingTop() - fuzz) && y <= (view.getHeight() - view.getPaddingBottom()) + fuzz) {
1328
1329                     return onDrawableTouch(event);
1330                 }
1331             }
1332             return false;
1333         }
1334
1335         public abstract boolean onDrawableTouch(final MotionEvent event);
1336     }
1337
1338 }