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.authentication.SsoWebViewClient.SsoWebViewClientListener;
  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.annotation.SuppressLint;
  39 import android.app.AlertDialog;
  40 import android.app.Dialog;
  41 import android.app.ProgressDialog;
  42 import android.content.ContentResolver;
  43 import android.content.DialogInterface;
  44 import android.content.Intent;
  45 import android.content.SharedPreferences;
  46 import android.graphics.Rect;
  47 import android.graphics.drawable.Drawable;
  48 import android.net.Uri;
  49 import android.os.Bundle;
  50 import android.os.Handler;
  51 import android.preference.PreferenceManager;
  52 import android.text.Editable;
  53 import android.text.InputType;
  54 import android.text.TextWatcher;
  55 import android.view.KeyEvent;
  56 import android.view.MotionEvent;
  57 import android.view.View;
  58 import android.view.View.OnFocusChangeListener;
  59 import android.view.View.OnTouchListener;
  60 import android.view.Window;
  61 import android.view.inputmethod.EditorInfo;
  62 import android.webkit.CookieManager;
  63 import android.webkit.WebSettings;
  64 import android.webkit.WebView;
  65 import android.widget.CheckBox;
  66 import android.widget.EditText;
  67 import android.widget.Button;
  68 import android.widget.TextView;
  69 import android.widget.Toast;
  70 import android.widget.TextView.OnEditorActionListener;
  71
  72 import com.owncloud.android.R;
  73
  74 import eu.alefzero.webdav.WebdavClient;
  75
  76 /**
  77  * This Activity is used to add an ownCloud account to the App
  78  *
  79  * @author Bartek Przybylski
  80  * @author David A. Velasco
  81  */
  82 public class AuthenticatorActivity extends AccountAuthenticatorActivity
  83 implements  OnRemoteOperationListener, OnSslValidatorListener, OnFocusChangeListener, OnEditorActionListener, SsoWebViewClientListener {
  84
  85     private static final String TAG = AuthenticatorActivity.class.getSimpleName();
  86
  87     public static final String EXTRA_ACCOUNT = "ACCOUNT";
  88     public static final String EXTRA_USER_NAME = "USER_NAME";
  89     public static final String EXTRA_HOST_NAME = "HOST_NAME";
  90     public static final String EXTRA_ACTION = "ACTION";
  91     public static final String EXTRA_ENFORCED_UPDATE = "ENFORCE_UPDATE";
  92
  93     private static final String KEY_HOST_URL_TEXT = "HOST_URL_TEXT";
  94     private static final String KEY_OC_VERSION = "OC_VERSION";
  95     private static final String KEY_ACCOUNT = "ACCOUNT";
  96     private static final String KEY_SERVER_VALID = "SERVER_VALID";
  97     private static final String KEY_SERVER_CHECKED = "SERVER_CHECKED";
  98     private static final String KEY_SERVER_CHECK_IN_PROGRESS = "SERVER_CHECK_IN_PROGRESS";
  99     private static final String KEY_SERVER_STATUS_TEXT = "SERVER_STATUS_TEXT";
 100     private static final String KEY_SERVER_STATUS_ICON = "SERVER_STATUS_ICON";
 101     private static final String KEY_IS_SSL_CONN = "IS_SSL_CONN";
 102     private static final String KEY_PASSWORD_VISIBLE = "PASSWORD_VISIBLE";
 103     private static final String KEY_AUTH_STATUS_TEXT = "AUTH_STATUS_TEXT";
 104     private static final String KEY_AUTH_STATUS_ICON = "AUTH_STATUS_ICON";
 105     private static final String KEY_REFRESH_BUTTON_ENABLED = "KEY_REFRESH_BUTTON_ENABLED";
 106
 107     private static final String AUTH_ON = "on";
 108     private static final String AUTH_OFF = "off";
 109     private static final String AUTH_OPTIONAL = "optional";
 110
 111     private static final int DIALOG_LOGIN_PROGRESS = 0;
 112     private static final int DIALOG_SSL_VALIDATOR = 1;
 113     private static final int DIALOG_CERT_NOT_SAVED = 2;
 114     private static final int DIALOG_OAUTH2_LOGIN_PROGRESS = 3;
 115
 116     public static final byte ACTION_CREATE = 0;
 117     public static final byte ACTION_UPDATE_TOKEN = 1;
 118
 119     private String mHostBaseUrl;
 120     private OwnCloudVersion mDiscoveredVersion;
 121
 122     private int mServerStatusText, mServerStatusIcon;
 123     private boolean mServerIsChecked, mServerIsValid, mIsSslConn;
 124     private int mAuthStatusText, mAuthStatusIcon;
 125     private TextView mAuthStatusLayout;
 126
 127     private final Handler mHandler = new Handler();
 128     private Thread mOperationThread;
 129     private OwnCloudServerCheckOperation mOcServerChkOperation;
 130     private ExistenceCheckOperation mAuthCheckOperation;
 131     private RemoteOperationResult mLastSslUntrustedServerResult;
 132
 133     private Uri mNewCapturedUriFromOAuth2Redirection;
 134
 135     private AccountManager mAccountMgr;
 136     private boolean mJustCreated;
 137     private byte mAction;
 138     private Account mAccount;
 139
 140     private EditText mHostUrlInput;
 141     private boolean mHostUrlInputEnabled;
 142     private View mRefreshButton;
 143
 144     private String mCurrentAuthTokenType;
 145
 146     private EditText mUsernameInput;
 147     private EditText mPasswordInput;
 148
 149     private CheckBox mOAuth2Check;
 150
 151     private TextView mOAuthAuthEndpointText;
 152     private TextView mOAuthTokenEndpointText;
 153
 154     private TextView mAccountNameInput;
 155     private WebView mSsoWebView;
 156     private SsoWebViewClient mWebViewClient;
 157
 158     private View mOkButton;
 159
 160     private String mAuthToken;
 161
 162
 163     /**
 164      * {@inheritDoc}
 165      *
 166      * IMPORTANT ENTRY POINT 1: activity is shown to the user
 167      */
 168     @Override
 169     protected void onCreate(Bundle savedInstanceState) {
 170         super.onCreate(savedInstanceState);
 171         getWindow().requestFeature(Window.FEATURE_NO_TITLE);
 172
 173         /// set view and get references to view elements
 174         setContentView(R.layout.account_setup);
 175         mHostUrlInput = (EditText) findViewById(R.id.hostUrlInput);
 176         mHostUrlInput.setText(getString(R.string.server_url));  // valid although R.string.server_url is an empty string
 177         mUsernameInput = (EditText) findViewById(R.id.account_username);
 178         mPasswordInput = (EditText) findViewById(R.id.account_password);
 179         mOAuthAuthEndpointText = (TextView)findViewById(R.id.oAuthEntryPoint_1);
 180         mOAuthTokenEndpointText = (TextView)findViewById(R.id.oAuthEntryPoint_2);
 181         mOAuth2Check = (CheckBox) findViewById(R.id.oauth_onOff_check);
 182         mAccountNameInput = (EditText) findViewById(R.id.account_name);
 183         mSsoWebView = (WebView) findViewById(R.id.web_sso_view);
 184         mOkButton = findViewById(R.id.buttonOK);
 185         mAuthStatusLayout = (TextView) findViewById(R.id.auth_status_text);
 186
 187         /// set Host Url Input Enabled
 188         mHostUrlInputEnabled = getResources().getBoolean(R.bool.show_server_url_input);
 189
 190
 191         /// complete label for 'register account' button
 192         Button b = (Button) findViewById(R.id.account_register);
 193         if (b != null) {
 194             b.setText(String.format(getString(R.string.auth_register), getString(R.string.app_name)));
 195         }
 196
 197         /// initialization
 198         mAccountMgr = AccountManager.get(this);
 199         mNewCapturedUriFromOAuth2Redirection = null;
 200         mAction = getIntent().getByteExtra(EXTRA_ACTION, ACTION_CREATE);
 201         mAccount = null;
 202         mHostBaseUrl = "";
 203         boolean refreshButtonEnabled = false;
 204
 205         // URL input configuration applied
 206         if (!mHostUrlInputEnabled)
 207         {
 208             findViewById(R.id.hostUrlFrame).setVisibility(View.GONE);
 209             mRefreshButton = findViewById(R.id.centeredRefreshButton);
 210
 211         } else {
 212             mRefreshButton = findViewById(R.id.embeddedRefreshButton);
 213         }
 214
 215         if (savedInstanceState == null) {
 216             /// connection state and info
 217             mServerStatusText = mServerStatusIcon = 0;
 218             mServerIsValid = false;
 219             mServerIsChecked = false;
 220             mIsSslConn = false;
 221             mAuthStatusText = mAuthStatusIcon = 0;
 222
 223             /// retrieve extras from intent
 224             mAccount = getIntent().getExtras().getParcelable(EXTRA_ACCOUNT);
 225             if (mAccount != null) {
 226                 String ocVersion = mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_OC_VERSION);
 227                 if (ocVersion != null) {
 228                     mDiscoveredVersion = new OwnCloudVersion(ocVersion);
 229                 }
 230                 mHostBaseUrl = normalizeUrl(mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_OC_BASE_URL));
 231                 mHostUrlInput.setText(mHostBaseUrl);
 232                 String userName = mAccount.name.substring(0, mAccount.name.lastIndexOf('@'));
 233                 mUsernameInput.setText(userName);
 234                 mAccountNameInput.setText(userName);
 235             }
 236             initAuthorizationMethod();  // checks intent and setup.xml to determine mCurrentAuthorizationMethod
 237             mJustCreated = true;
 238
 239             if (mAction == ACTION_UPDATE_TOKEN || !mHostUrlInputEnabled) {
 240                 checkOcServer();
 241             }
 242
 243         } else {
 244             /// connection state and info
 245             mServerIsValid = savedInstanceState.getBoolean(KEY_SERVER_VALID);
 246             mServerIsChecked = savedInstanceState.getBoolean(KEY_SERVER_CHECKED);
 247             mServerStatusText = savedInstanceState.getInt(KEY_SERVER_STATUS_TEXT);
 248             mServerStatusIcon = savedInstanceState.getInt(KEY_SERVER_STATUS_ICON);
 249             mIsSslConn = savedInstanceState.getBoolean(KEY_IS_SSL_CONN);
 250             mAuthStatusText = savedInstanceState.getInt(KEY_AUTH_STATUS_TEXT);
 251             mAuthStatusIcon = savedInstanceState.getInt(KEY_AUTH_STATUS_ICON);
 252             if (savedInstanceState.getBoolean(KEY_PASSWORD_VISIBLE, false)) {
 253                 showPassword();
 254             }
 255
 256             /// server data
 257             String ocVersion = savedInstanceState.getString(KEY_OC_VERSION);
 258             if (ocVersion != null) {
 259                 mDiscoveredVersion = new OwnCloudVersion(ocVersion);
 260             }
 261             mHostBaseUrl = savedInstanceState.getString(KEY_HOST_URL_TEXT);
 262
 263             // account data, if updating
 264             mAccount = savedInstanceState.getParcelable(KEY_ACCOUNT);
 265             mCurrentAuthTokenType = savedInstanceState.getString(AccountAuthenticator.KEY_AUTH_TOKEN_TYPE);
 266             if (mCurrentAuthTokenType == null) {
 267                 mCurrentAuthTokenType =  AccountAuthenticator.AUTH_TOKEN_TYPE_PASSWORD;
 268
 269             } else if (AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE.equals(mCurrentAuthTokenType)) {
 270                 restoreWebView(savedInstanceState);
 271             }
 272
 273             // check if server check was interrupted by a configuration change
 274             if (savedInstanceState.getBoolean(KEY_SERVER_CHECK_IN_PROGRESS, false)) {
 275                 checkOcServer();
 276             }
 277
 278             // refresh button enabled
 279             refreshButtonEnabled = savedInstanceState.getBoolean(KEY_REFRESH_BUTTON_ENABLED);
 280
 281
 282         }
 283
 284         adaptViewAccordingToAuthenticationMethod();
 285         showServerStatus();
 286         showAuthStatus();
 287
 288         if (mAction == ACTION_UPDATE_TOKEN) {
 289             /// lock things that should not change
 290             mHostUrlInput.setEnabled(false);
 291             mHostUrlInput.setFocusable(false);
 292             mUsernameInput.setEnabled(false);
 293             mUsernameInput.setFocusable(false);
 294             mOAuth2Check.setVisibility(View.GONE);
 295             mAccountNameInput.setEnabled(false);
 296             mAccountNameInput.setFocusable(false);
 297         }
 298
 299         //if (mServerIsChecked && !mServerIsValid && mRefreshButtonEnabled) showRefreshButton();
 300         if (mServerIsChecked && !mServerIsValid && refreshButtonEnabled) showRefreshButton();
 301         mOkButton.setEnabled(mServerIsValid); // state not automatically recovered in configuration changes
 302
 303         if (AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE.equals(mCurrentAuthTokenType) ||
 304                 !AUTH_OPTIONAL.equals(getString(R.string.auth_method_oauth2))) {
 305             mOAuth2Check.setVisibility(View.GONE);
 306         }
 307
 308         mPasswordInput.setText("");     // clean password to avoid social hacking (disadvantage: password in removed if the device is turned aside)
 309
 310         /// bind view elements to listeners and other friends
 311         mHostUrlInput.setOnFocusChangeListener(this);
 312         mHostUrlInput.addTextChangedListener(new TextWatcher() {
 313
 314             @Override
 315             public void afterTextChanged(Editable s) {
 316                 if (!mHostBaseUrl.equals(normalizeUrl(mHostUrlInput.getText().toString()))) {
 317                     mOkButton.setEnabled(false);
 318                 }
 319             }
 320
 321             @Override
 322             public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
 323
 324             @Override
 325             public void onTextChanged(CharSequence s, int start, int before, int count) {}
 326
 327         });
 328         mPasswordInput.setOnFocusChangeListener(this);
 329         mPasswordInput.setImeOptions(EditorInfo.IME_ACTION_DONE);
 330         mPasswordInput.setOnEditorActionListener(this);
 331         mPasswordInput.setOnTouchListener(new RightDrawableOnTouchListener() {
 332             @Override
 333             public boolean onDrawableTouch(final MotionEvent event) {
 334                 if (event.getAction() == MotionEvent.ACTION_UP) {
 335                     AuthenticatorActivity.this.onViewPasswordClick();
 336                 }
 337                 return true;
 338             }
 339         });
 340
 341     }
 342
 343     @SuppressLint("SetJavaScriptEnabled")
 344         private void initWebView() {
 345         CookieManager cookieManager = CookieManager.getInstance();
 346         cookieManager.setAcceptCookie(true);
 347         cookieManager.removeAllCookie();
 348
 349         mWebViewClient = new SsoWebViewClient(mHandler, this);
 350         mSsoWebView.setWebViewClient(mWebViewClient);
 351         WebSettings webSettings = mSsoWebView.getSettings();
 352         webSettings.setJavaScriptEnabled(true);
 353         webSettings.setBuiltInZoomControls(true);
 354         webSettings.setLoadWithOverviewMode(false);
 355         webSettings.setSavePassword(false);
 356         webSettings.setUserAgentString(WebdavClient.USER_AGENT);
 357     }
 358
 359     @SuppressLint("SetJavaScriptEnabled")
 360     private void restoreWebView(Bundle savedInstanceState) {
 361         mSsoWebView.restoreState(savedInstanceState);
 362
 363         CookieManager cookieManager = CookieManager.getInstance();
 364         Log_OC.e(TAG, "Accept Cookie: " + cookieManager.acceptCookie());
 365
 366         mWebViewClient = new SsoWebViewClient(mHandler, this);
 367         mSsoWebView.setWebViewClient(mWebViewClient);
 368         mWebViewClient.setTargetUrl(mHostBaseUrl + AccountUtils.getWebdavPath(mDiscoveredVersion, mCurrentAuthTokenType));
 369
 370         WebSettings webSettings = mSsoWebView.getSettings();
 371         webSettings.setJavaScriptEnabled(true);     // at least this one is not being kept by WebView#restoreState
 372         webSettings.setBuiltInZoomControls(true);
 373         webSettings.setLoadWithOverviewMode(false);
 374         webSettings.setSavePassword(false);
 375         webSettings.setUserAgentString(WebdavClient.USER_AGENT);
 376     }
 377
 378     private void initAuthorizationMethod() {
 379         boolean oAuthRequired = false;
 380         boolean samlWebSsoRequired = false;
 381
 382         mCurrentAuthTokenType = getIntent().getExtras().getString(AccountAuthenticator.KEY_AUTH_TOKEN_TYPE);
 383         mAccount = getIntent().getExtras().getParcelable(EXTRA_ACCOUNT);
 384
 385         // TODO could be a good moment to validate the received token type, if not null
 386
 387         if (mCurrentAuthTokenType == null) {
 388             if (mAccount != null) {
 389                 /// same authentication method than the one used to create the account to update
 390                 oAuthRequired = (mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_SUPPORTS_OAUTH2) != null);
 391                 samlWebSsoRequired = (mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_SUPPORTS_SAML_WEB_SSO) != null);
 392
 393             } else {
 394                 /// use the one set in setup.xml
 395                 oAuthRequired = AUTH_ON.equals(getString(R.string.auth_method_oauth2));
 396                 samlWebSsoRequired = AUTH_ON.equals(getString(R.string.auth_method_saml_web_sso));
 397             }
 398             if (oAuthRequired) {
 399                 mCurrentAuthTokenType = AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN;
 400             } else if (samlWebSsoRequired) {
 401                 mCurrentAuthTokenType = AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE;
 402             } else {
 403                 mCurrentAuthTokenType = AccountAuthenticator.AUTH_TOKEN_TYPE_PASSWORD;
 404             }
 405         }
 406
 407         if (mAccount != null) {
 408             String userName = mAccount.name.substring(0, mAccount.name.lastIndexOf('@'));
 409             mUsernameInput.setText(userName);
 410         }
 411
 412         if (AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE.equals(mCurrentAuthTokenType)) {
 413             initWebView();
 414         }
 415         mOAuth2Check.setChecked(AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN.equals(mCurrentAuthTokenType));
 416
 417     }
 418
 419     /**
 420      * Saves relevant state before {@link #onPause()}
 421      *
 422      * Do NOT save {@link #mNewCapturedUriFromOAuth2Redirection}; it keeps a temporal flag, intended to defer the
 423      * processing of the redirection caught in {@link #onNewIntent(Intent)} until {@link #onResume()}
 424      *
 425      * See {@link #loadSavedInstanceState(Bundle)}
 426      */
 427     @Override
 428     protected void onSaveInstanceState(Bundle outState) {
 429         super.onSaveInstanceState(outState);
 430
 431         /// connection state and info
 432         outState.putInt(KEY_SERVER_STATUS_TEXT, mServerStatusText);
 433         outState.putInt(KEY_SERVER_STATUS_ICON, mServerStatusIcon);
 434         outState.putBoolean(KEY_SERVER_VALID, mServerIsValid);
 435         outState.putBoolean(KEY_SERVER_CHECKED, mServerIsChecked);
 436         outState.putBoolean(KEY_SERVER_CHECK_IN_PROGRESS, (!mServerIsValid && mOcServerChkOperation != null));
 437         outState.putBoolean(KEY_IS_SSL_CONN, mIsSslConn);
 438         outState.putBoolean(KEY_PASSWORD_VISIBLE, isPasswordVisible());
 439         outState.putInt(KEY_AUTH_STATUS_ICON, mAuthStatusIcon);
 440         outState.putInt(KEY_AUTH_STATUS_TEXT, mAuthStatusText);
 441
 442         /// server data
 443         if (mDiscoveredVersion != null) {
 444             outState.putString(KEY_OC_VERSION, mDiscoveredVersion.toString());
 445         }
 446         outState.putString(KEY_HOST_URL_TEXT, mHostBaseUrl);
 447
 448         /// account data, if updating
 449         if (mAccount != null) {
 450             outState.putParcelable(KEY_ACCOUNT, mAccount);
 451         }
 452         outState.putString(AccountAuthenticator.KEY_AUTH_TOKEN_TYPE, mCurrentAuthTokenType);
 453         if (AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE.equals(mCurrentAuthTokenType)) {
 454             mSsoWebView.saveState(outState);
 455         }
 456
 457         // refresh button enabled
 458         outState.putBoolean(KEY_REFRESH_BUTTON_ENABLED, (mRefreshButton.getVisibility() == View.VISIBLE));
 459
 460     }
 461
 462
 463     /**
 464      * The redirection triggered by the OAuth authentication server as response to the GET AUTHORIZATION request
 465      * is caught here.
 466      *
 467      * To make this possible, this activity needs to be qualified with android:launchMode = "singleTask" in the
 468      * AndroidManifest.xml file.
 469      */
 470     @Override
 471     protected void onNewIntent (Intent intent) {
 472         Log_OC.d(TAG, "onNewIntent()");
 473         Uri data = intent.getData();
 474         if (data != null && data.toString().startsWith(getString(R.string.oauth2_redirect_uri))) {
 475             mNewCapturedUriFromOAuth2Redirection = data;
 476         }
 477     }
 478
 479
 480     /**
 481      * The redirection triggered by the OAuth authentication server as response to the GET AUTHORIZATION, and
 482      * deferred in {@link #onNewIntent(Intent)}, is processed here.
 483      */
 484     @Override
 485     protected void onResume() {
 486         super.onResume();
 487         if (mAction == ACTION_UPDATE_TOKEN && mJustCreated && getIntent().getBooleanExtra(EXTRA_ENFORCED_UPDATE, false)) {
 488             if (AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN.equals(mCurrentAuthTokenType)) {
 489                 Toast.makeText(this, R.string.auth_expired_oauth_token_toast, Toast.LENGTH_LONG).show();
 490
 491             } else if (AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE.equals(mCurrentAuthTokenType)) {
 492                 Toast.makeText(this, R.string.auth_expired_saml_sso_token_toast, Toast.LENGTH_LONG).show();
 493
 494             } else {
 495                 Toast.makeText(this, R.string.auth_expired_basic_auth_toast, Toast.LENGTH_LONG).show();
 496             }
 497         }
 498
 499         if (mNewCapturedUriFromOAuth2Redirection != null) {
 500             getOAuth2AccessTokenFromCapturedRedirection();
 501         }
 502
 503         mJustCreated = false;
 504     }
 505
 506
 507     /**
 508      * Parses the redirection with the response to the GET AUTHORIZATION request to the
 509      * oAuth server and requests for the access token (GET ACCESS TOKEN)
 510      */
 511     private void getOAuth2AccessTokenFromCapturedRedirection() {
 512         /// Parse data from OAuth redirection
 513         String queryParameters = mNewCapturedUriFromOAuth2Redirection.getQuery();
 514         mNewCapturedUriFromOAuth2Redirection = null;
 515
 516         /// Showing the dialog with instructions for the user.
 517         showDialog(DIALOG_OAUTH2_LOGIN_PROGRESS);
 518
 519         /// GET ACCESS TOKEN to the oAuth server
 520         RemoteOperation operation = new OAuth2GetAccessToken(   getString(R.string.oauth2_client_id),
 521                 getString(R.string.oauth2_redirect_uri),
 522                 getString(R.string.oauth2_grant_type),
 523                 queryParameters);
 524         //WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(getString(R.string.oauth2_url_endpoint_access)), getApplicationContext());
 525         WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mOAuthTokenEndpointText.getText().toString().trim()), getApplicationContext(), true);
 526         operation.execute(client, this, mHandler);
 527     }
 528
 529
 530
 531     /**
 532      * Handles the change of focus on the text inputs for the server URL and the password
 533      */
 534     public void onFocusChange(View view, boolean hasFocus) {
 535         if (view.getId() == R.id.hostUrlInput) {
 536             if (!hasFocus) {
 537                 onUrlInputFocusLost((TextView) view);
 538             }
 539             else {
 540                 hideRefreshButton();
 541             }
 542
 543         } else if (view.getId() == R.id.account_password) {
 544             onPasswordFocusChanged((TextView) view, hasFocus);
 545         }
 546     }
 547
 548
 549     /**
 550      * Handles changes in focus on the text input for the server URL.
 551      *
 552      * IMPORTANT ENTRY POINT 2: When (!hasFocus), user wrote the server URL and changed to
 553      * other field. The operation to check the existence of the server in the entered URL is
 554      * started.
 555      *
 556      * When hasFocus:    user 'comes back' to write again the server URL.
 557      *
 558      * @param hostInput     TextView with the URL input field receiving the change of focus.
 559      */
 560     private void onUrlInputFocusLost(TextView hostInput) {
 561         if (!mHostBaseUrl.equals(normalizeUrl(mHostUrlInput.getText().toString()))) {
 562             checkOcServer();
 563         } else {
 564             mOkButton.setEnabled(mServerIsValid);
 565             if (!mServerIsValid) {
 566                 showRefreshButton();
 567             }
 568         }
 569     }
 570
 571
 572     private void checkOcServer() {
 573         String uri = trimUrlWebdav(mHostUrlInput.getText().toString().trim());
 574
 575         if (!mHostUrlInputEnabled){
 576             uri = getString(R.string.server_url);
 577         }
 578
 579         mServerIsValid = false;
 580         mServerIsChecked = false;
 581         mOkButton.setEnabled(false);
 582         mDiscoveredVersion = null;
 583         hideRefreshButton();
 584         if (uri.length() != 0) {
 585             mServerStatusText = R.string.auth_testing_connection;
 586             mServerStatusIcon = R.drawable.progress_small;
 587             showServerStatus();
 588             mOcServerChkOperation = new  OwnCloudServerCheckOperation(uri, this);
 589             WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(uri), this, true);
 590             mOperationThread = mOcServerChkOperation.execute(client, this, mHandler);
 591         } else {
 592             mServerStatusText = 0;
 593             mServerStatusIcon = 0;
 594             showServerStatus();
 595         }
 596     }
 597
 598
 599     /**
 600      * Handles changes in focus on the text input for the password (basic authorization).
 601      *
 602      * When (hasFocus), the button to toggle password visibility is shown.
 603      *
 604      * When (!hasFocus), the button is made invisible and the password is hidden.
 605      *
 606      * @param passwordInput    TextView with the password input field receiving the change of focus.
 607      * @param hasFocus          'True' if focus is received, 'false' if is lost
 608      */
 609     private void onPasswordFocusChanged(TextView passwordInput, boolean hasFocus) {
 610         if (hasFocus) {
 611             showViewPasswordButton();
 612         } else {
 613             hidePassword();
 614             hidePasswordButton();
 615         }
 616     }
 617
 618
 619     private void showViewPasswordButton() {
 620         //int drawable = android.R.drawable.ic_menu_view;
 621         int drawable = R.drawable.ic_view;
 622         if (isPasswordVisible()) {
 623             //drawable = android.R.drawable.ic_secure;
 624             drawable = R.drawable.ic_hide;
 625         }
 626         mPasswordInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, drawable, 0);
 627     }
 628
 629     private boolean isPasswordVisible() {
 630         return ((mPasswordInput.getInputType() & InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD) == InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
 631     }
 632
 633     private void hidePasswordButton() {
 634         mPasswordInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
 635     }
 636
 637     private void showPassword() {
 638         mPasswordInput.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
 639         showViewPasswordButton();
 640     }
 641
 642     private void hidePassword() {
 643         mPasswordInput.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
 644         showViewPasswordButton();
 645     }
 646
 647
 648     /**
 649      * Cancels the authenticator activity
 650      *
 651      * IMPORTANT ENTRY POINT 3: Never underestimate the importance of cancellation
 652      *
 653      * This method is bound in the layout/acceoun_setup.xml resource file.
 654      *
 655      * @param view      Cancel button
 656      */
 657     public void onCancelClick(View view) {
 658         setResult(RESULT_CANCELED);     // TODO review how is this related to AccountAuthenticator (debugging)
 659         finish();
 660     }
 661
 662
 663
 664     /**
 665      * Checks the credentials of the user in the root of the ownCloud server
 666      * before creating a new local account.
 667      *
 668      * For basic authorization, a check of existence of the root folder is
 669      * performed.
 670      *
 671      * For OAuth, starts the flow to get an access token; the credentials test
 672      * is postponed until it is available.
 673      *
 674      * IMPORTANT ENTRY POINT 4
 675      *
 676      * @param view      OK button
 677      */
 678     public void onOkClick(View view) {
 679         // this check should be unnecessary
 680         if (mDiscoveredVersion == null || !mDiscoveredVersion.isVersionValid()  || mHostBaseUrl == null || mHostBaseUrl.length() == 0) {
 681             mServerStatusIcon = R.drawable.common_error;
 682             mServerStatusText = R.string.auth_wtf_reenter_URL;
 683             showServerStatus();
 684             mOkButton.setEnabled(false);
 685             Log_OC.wtf(TAG,  "The user was allowed to click 'connect' to an unchecked server!!");
 686             return;
 687         }
 688
 689         if (AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN.equals(mCurrentAuthTokenType)) {
 690             startOauthorization();
 691         } else if (AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE.equals(mCurrentAuthTokenType)) {
 692             startSamlBasedFederatedSingleSignOnAuthorization();
 693         } else {
 694             checkBasicAuthorization();
 695         }
 696     }
 697
 698
 699     /**
 700      * Tests the credentials entered by the user performing a check of existence on
 701      * the root folder of the ownCloud server.
 702      */
 703     private void checkBasicAuthorization() {
 704         /// get the path to the root folder through WebDAV from the version server
 705         String webdav_path = AccountUtils.getWebdavPath(mDiscoveredVersion, mCurrentAuthTokenType);
 706
 707         /// get basic credentials entered by user
 708         String username = mUsernameInput.getText().toString();
 709         String password = mPasswordInput.getText().toString();
 710
 711         /// be gentle with the user
 712         showDialog(DIALOG_LOGIN_PROGRESS);
 713
 714         /// test credentials accessing the root folder
 715         mAuthCheckOperation = new  ExistenceCheckOperation("", this, false);
 716         WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mHostBaseUrl + webdav_path), this, true);
 717         client.setBasicCredentials(username, password);
 718         mOperationThread = mAuthCheckOperation.execute(client, this, mHandler);
 719     }
 720
 721
 722     /**
 723      * Starts the OAuth 'grant type' flow to get an access token, with
 724      * a GET AUTHORIZATION request to the BUILT-IN authorization server.
 725      */
 726     private void startOauthorization() {
 727         // be gentle with the user
 728         mAuthStatusIcon = R.drawable.progress_small;
 729         mAuthStatusText = R.string.oauth_login_connection;
 730         showAuthStatus();
 731
 732
 733         // GET AUTHORIZATION request
 734         //Uri uri = Uri.parse(getString(R.string.oauth2_url_endpoint_auth));
 735         Uri uri = Uri.parse(mOAuthAuthEndpointText.getText().toString().trim());
 736         Uri.Builder uriBuilder = uri.buildUpon();
 737         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_RESPONSE_TYPE, getString(R.string.oauth2_response_type));
 738         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_REDIRECT_URI, getString(R.string.oauth2_redirect_uri));
 739         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_CLIENT_ID, getString(R.string.oauth2_client_id));
 740         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_SCOPE, getString(R.string.oauth2_scope));
 741         //uriBuilder.appendQueryParameter(OAuth2Constants.KEY_STATE, whateverwewant);
 742         uri = uriBuilder.build();
 743         Log_OC.d(TAG, "Starting browser to view " + uri.toString());
 744         Intent i = new Intent(Intent.ACTION_VIEW, uri);
 745         startActivity(i);
 746     }
 747
 748
 749     /**
 750      * Starts the Web Single Sign On flow to get access to the root folder
 751      * in the server.
 752      */
 753     private void startSamlBasedFederatedSingleSignOnAuthorization() {
 754         // be gentle with the user
 755         mAuthStatusIcon = R.drawable.progress_small;
 756         mAuthStatusText = R.string.auth_connecting_auth_server;
 757         showAuthStatus();
 758         showDialog(DIALOG_LOGIN_PROGRESS);
 759
 760         /// get the path to the root folder through WebDAV from the version server
 761         String webdav_path = AccountUtils.getWebdavPath(mDiscoveredVersion, mCurrentAuthTokenType);
 762
 763         /// test credentials accessing the root folder
 764         mAuthCheckOperation = new  ExistenceCheckOperation("", this, false);
 765         WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mHostBaseUrl + webdav_path), this, false);
 766         mOperationThread = mAuthCheckOperation.execute(client, this, mHandler);
 767     }
 768
 769     /**
 770      * Callback method invoked when a RemoteOperation executed by this Activity finishes.
 771      *
 772      * Dispatches the operation flow to the right method.
 773      */
 774     @Override
 775     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 776
 777         if (operation instanceof OwnCloudServerCheckOperation) {
 778             onOcServerCheckFinish((OwnCloudServerCheckOperation) operation, result);
 779
 780         } else if (operation instanceof OAuth2GetAccessToken) {
 781             onGetOAuthAccessTokenFinish((OAuth2GetAccessToken)operation, result);
 782
 783         } else if (operation instanceof ExistenceCheckOperation)  {
 784             if (AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE.equals(mCurrentAuthTokenType)) {
 785                 onSamlBasedFederatedSingleSignOnAuthorizationStart(operation, result);
 786
 787             } else {
 788                 onAuthorizationCheckFinish((ExistenceCheckOperation)operation, result);
 789             }
 790         }
 791     }
 792
 793
 794     private void onSamlBasedFederatedSingleSignOnAuthorizationStart(RemoteOperation operation, RemoteOperationResult result) {
 795         try {
 796             dismissDialog(DIALOG_LOGIN_PROGRESS);
 797         } catch (IllegalArgumentException e) {
 798             // NOTHING TO DO ; can't find out what situation that leads to the exception in this code, but user logs signal that it happens
 799         }
 800
 801         if (result.isTemporalRedirection()) {
 802             String url = result.getRedirectedLocation();
 803             mWebViewClient.setTargetUrl(mHostBaseUrl + AccountUtils.getWebdavPath(mDiscoveredVersion, mCurrentAuthTokenType));
 804             mSsoWebView.loadUrl(url);
 805
 806             mAuthStatusIcon = android.R.drawable.ic_secure;
 807             mAuthStatusText = R.string.auth_follow_auth_server;
 808
 809         } else {
 810             mAuthStatusIcon = R.drawable.common_error;
 811             mAuthStatusText = R.string.auth_unsupported_auth_method;
 812
 813         }
 814         showAuthStatus();
 815     }
 816
 817
 818     /**
 819      * Processes the result of the server check performed when the user finishes the enter of the
 820      * server URL.
 821      *
 822      * @param operation     Server check performed.
 823      * @param result        Result of the check.
 824      */
 825     private void onOcServerCheckFinish(OwnCloudServerCheckOperation operation, RemoteOperationResult result) {
 826         if (operation.equals(mOcServerChkOperation)) {
 827             /// save result state
 828             mServerIsChecked = true;
 829             mServerIsValid = result.isSuccess();
 830             mIsSslConn = (result.getCode() == ResultCode.OK_SSL);
 831             mOcServerChkOperation = null;
 832
 833             /// update status icon and text
 834             if (mServerIsValid) {
 835                 hideRefreshButton();
 836             } else {
 837                 showRefreshButton();
 838             }
 839             updateServerStatusIconAndText(result);
 840             showServerStatus();
 841
 842             /// very special case (TODO: move to a common place for all the remote operations)
 843             if (result.getCode() == ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED) {
 844                 mLastSslUntrustedServerResult = result;
 845                 showDialog(DIALOG_SSL_VALIDATOR);
 846             }
 847
 848             /// retrieve discovered version and normalize server URL
 849             mDiscoveredVersion = operation.getDiscoveredVersion();
 850             mHostBaseUrl = normalizeUrl(mHostUrlInput.getText().toString());
 851
 852             /// allow or not the user try to access the server
 853             mOkButton.setEnabled(mServerIsValid);
 854
 855         }   // else nothing ; only the last check operation is considered;
 856         // multiple can be triggered if the user amends a URL before a previous check can be triggered
 857     }
 858
 859
 860     private String normalizeUrl(String url) {
 861         if (url != null && url.length() > 0) {
 862             url = url.trim();
 863             if (!url.toLowerCase().startsWith("http://") &&
 864                     !url.toLowerCase().startsWith("https://")) {
 865                 if (mIsSslConn) {
 866                     url = "https://" + url;
 867                 } else {
 868                     url = "http://" + url;
 869                 }
 870             }
 871
 872             // OC-208: Add suffix remote.php/webdav to normalize (OC-34)
 873             url = trimUrlWebdav(url);
 874
 875             if (url.endsWith("/")) {
 876                 url = url.substring(0, url.length() - 1);
 877             }
 878
 879         }
 880         Log_OC.d(TAG, "URL Normalize " + url);
 881         return (url != null ? url : "");
 882     }
 883
 884
 885     private String trimUrlWebdav(String url){
 886         if(url.toLowerCase().endsWith(AccountUtils.WEBDAV_PATH_4_0)){
 887             url = url.substring(0, url.length() - AccountUtils.WEBDAV_PATH_4_0.length());
 888         } else if(url.toLowerCase().endsWith(AccountUtils.WEBDAV_PATH_2_0)){
 889             url = url.substring(0, url.length() - AccountUtils.WEBDAV_PATH_2_0.length());
 890         } else if (url.toLowerCase().endsWith(AccountUtils.WEBDAV_PATH_1_2)){
 891             url = url.substring(0, url.length() - AccountUtils.WEBDAV_PATH_1_2.length());
 892         }
 893         return (url != null ? url : "");
 894     }
 895
 896
 897     /**
 898      * Chooses the right icon and text to show to the user for the received operation result.
 899      *
 900      * @param result    Result of a remote operation performed in this activity
 901      */
 902     private void updateServerStatusIconAndText(RemoteOperationResult result) {
 903         mServerStatusIcon = R.drawable.common_error;    // the most common case in the switch below
 904
 905         switch (result.getCode()) {
 906         case OK_SSL:
 907             mServerStatusIcon = android.R.drawable.ic_secure;
 908             mServerStatusText = R.string.auth_secure_connection;
 909             break;
 910
 911         case OK_NO_SSL:
 912         case OK:
 913             if (mHostUrlInput.getText().toString().trim().toLowerCase().startsWith("http://") ) {
 914                 mServerStatusText = R.string.auth_connection_established;
 915                 mServerStatusIcon = R.drawable.ic_ok;
 916             } else {
 917                 mServerStatusText = R.string.auth_nossl_plain_ok_title;
 918                 mServerStatusIcon = android.R.drawable.ic_partial_secure;
 919             }
 920             break;
 921
 922         case NO_NETWORK_CONNECTION:
 923             mServerStatusIcon = R.drawable.no_network;
 924             mServerStatusText = R.string.auth_no_net_conn_title;
 925             break;
 926
 927         case SSL_RECOVERABLE_PEER_UNVERIFIED:
 928             mServerStatusText = R.string.auth_ssl_unverified_server_title;
 929             break;
 930         case BAD_OC_VERSION:
 931             mServerStatusText = R.string.auth_bad_oc_version_title;
 932             break;
 933         case WRONG_CONNECTION:
 934             mServerStatusText = R.string.auth_wrong_connection_title;
 935             break;
 936         case TIMEOUT:
 937             mServerStatusText = R.string.auth_timeout_title;
 938             break;
 939         case INCORRECT_ADDRESS:
 940             mServerStatusText = R.string.auth_incorrect_address_title;
 941             break;
 942         case SSL_ERROR:
 943             mServerStatusText = R.string.auth_ssl_general_error_title;
 944             break;
 945         case UNAUTHORIZED:
 946             mServerStatusText = R.string.auth_unauthorized;
 947             break;
 948         case HOST_NOT_AVAILABLE:
 949             mServerStatusText = R.string.auth_unknown_host_title;
 950             break;
 951         case INSTANCE_NOT_CONFIGURED:
 952             mServerStatusText = R.string.auth_not_configured_title;
 953             break;
 954         case FILE_NOT_FOUND:
 955             mServerStatusText = R.string.auth_incorrect_path_title;
 956             break;
 957         case OAUTH2_ERROR:
 958             mServerStatusText = R.string.auth_oauth_error;
 959             break;
 960         case OAUTH2_ERROR_ACCESS_DENIED:
 961             mServerStatusText = R.string.auth_oauth_error_access_denied;
 962             break;
 963         case UNHANDLED_HTTP_CODE:
 964         case UNKNOWN_ERROR:
 965             mServerStatusText = R.string.auth_unknown_error_title;
 966             break;
 967         default:
 968             mServerStatusText = 0;
 969             mServerStatusIcon = 0;
 970         }
 971     }
 972
 973
 974     /**
 975      * Chooses the right icon and text to show to the user for the received operation result.
 976      *
 977      * @param result    Result of a remote operation performed in this activity
 978      */
 979     private void updateAuthStatusIconAndText(RemoteOperationResult result) {
 980         mAuthStatusIcon = R.drawable.common_error;    // the most common case in the switch below
 981
 982         switch (result.getCode()) {
 983         case OK_SSL:
 984             mAuthStatusIcon = android.R.drawable.ic_secure;
 985             mAuthStatusText = R.string.auth_secure_connection;
 986             break;
 987
 988         case OK_NO_SSL:
 989         case OK:
 990             if (mHostUrlInput.getText().toString().trim().toLowerCase().startsWith("http://") ) {
 991                 mAuthStatusText = R.string.auth_connection_established;
 992                 mAuthStatusIcon = R.drawable.ic_ok;
 993             } else {
 994                 mAuthStatusText = R.string.auth_nossl_plain_ok_title;
 995                 mAuthStatusIcon = android.R.drawable.ic_partial_secure;
 996             }
 997             break;
 998
 999         case NO_NETWORK_CONNECTION:
1000             mAuthStatusIcon = R.drawable.no_network;
1001             mAuthStatusText = R.string.auth_no_net_conn_title;
1002             break;
1003
1004         case SSL_RECOVERABLE_PEER_UNVERIFIED:
1005             mAuthStatusText = R.string.auth_ssl_unverified_server_title;
1006             break;
1007         case BAD_OC_VERSION:
1008             mAuthStatusText = R.string.auth_bad_oc_version_title;
1009             break;
1010         case WRONG_CONNECTION:
1011             mAuthStatusText = R.string.auth_wrong_connection_title;
1012             break;
1013         case TIMEOUT:
1014             mAuthStatusText = R.string.auth_timeout_title;
1015             break;
1016         case INCORRECT_ADDRESS:
1017             mAuthStatusText = R.string.auth_incorrect_address_title;
1018             break;
1019         case SSL_ERROR:
1020             mAuthStatusText = R.string.auth_ssl_general_error_title;
1021             break;
1022         case UNAUTHORIZED:
1023             mAuthStatusText = R.string.auth_unauthorized;
1024             break;
1025         case HOST_NOT_AVAILABLE:
1026             mAuthStatusText = R.string.auth_unknown_host_title;
1027             break;
1028         case INSTANCE_NOT_CONFIGURED:
1029             mAuthStatusText = R.string.auth_not_configured_title;
1030             break;
1031         case FILE_NOT_FOUND:
1032             mAuthStatusText = R.string.auth_incorrect_path_title;
1033             break;
1034         case OAUTH2_ERROR:
1035             mAuthStatusText = R.string.auth_oauth_error;
1036             break;
1037         case OAUTH2_ERROR_ACCESS_DENIED:
1038             mAuthStatusText = R.string.auth_oauth_error_access_denied;
1039             break;
1040         case UNHANDLED_HTTP_CODE:
1041         case UNKNOWN_ERROR:
1042             mAuthStatusText = R.string.auth_unknown_error_title;
1043             break;
1044         default:
1045             mAuthStatusText = 0;
1046             mAuthStatusIcon = 0;
1047         }
1048     }
1049
1050
1051     /**
1052      * Processes the result of the request for and access token send
1053      * to an OAuth authorization server.
1054      *
1055      * @param operation     Operation performed requesting the access token.
1056      * @param result        Result of the operation.
1057      */
1058     private void onGetOAuthAccessTokenFinish(OAuth2GetAccessToken operation, RemoteOperationResult result) {
1059         try {
1060             dismissDialog(DIALOG_OAUTH2_LOGIN_PROGRESS);
1061         } catch (IllegalArgumentException e) {
1062             // NOTHING TO DO ; can't find out what situation that leads to the exception in this code, but user logs signal that it happens
1063         }
1064
1065         String webdav_path = AccountUtils.getWebdavPath(mDiscoveredVersion, mCurrentAuthTokenType);
1066         if (result.isSuccess() && webdav_path != null) {
1067             /// be gentle with the user
1068             showDialog(DIALOG_LOGIN_PROGRESS);
1069
1070             /// time to test the retrieved access token on the ownCloud server
1071             mAuthToken = ((OAuth2GetAccessToken)operation).getResultTokenMap().get(OAuth2Constants.KEY_ACCESS_TOKEN);
1072             Log_OC.d(TAG, "Got ACCESS TOKEN: " + mAuthToken);
1073             mAuthCheckOperation = new ExistenceCheckOperation("", this, false);
1074             WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mHostBaseUrl + webdav_path), this, true);
1075             client.setBearerCredentials(mAuthToken);
1076             mAuthCheckOperation.execute(client, this, mHandler);
1077
1078         } else {
1079             updateAuthStatusIconAndText(result);
1080             showAuthStatus();
1081             Log_OC.d(TAG, "Access failed: " + result.getLogMessage());
1082         }
1083     }
1084
1085
1086     /**
1087      * Processes the result of the access check performed to try the user credentials.
1088      *
1089      * Creates a new account through the AccountManager.
1090      *
1091      * @param operation     Access check performed.
1092      * @param result        Result of the operation.
1093      */
1094     private void onAuthorizationCheckFinish(ExistenceCheckOperation operation, RemoteOperationResult result) {
1095         try {
1096             dismissDialog(DIALOG_LOGIN_PROGRESS);
1097         } catch (IllegalArgumentException e) {
1098             // NOTHING TO DO ; can't find out what situation that leads to the exception in this code, but user logs signal that it happens
1099         }
1100
1101         if (result.isSuccess()) {
1102             Log_OC.d(TAG, "Successful access - time to save the account");
1103
1104             if (mAction == ACTION_CREATE) {
1105                 createAccount();
1106
1107             } else {
1108                 updateToken();
1109             }
1110
1111             finish();
1112
1113         } else if (result.isServerFail() || result.isException()) {
1114             /// if server fail or exception in authorization, the UI is updated as when a server check failed
1115             mServerIsChecked = true;
1116             mServerIsValid = false;
1117             mIsSslConn = false;
1118             mOcServerChkOperation = null;
1119             mDiscoveredVersion = null;
1120             mHostBaseUrl = normalizeUrl(mHostUrlInput.getText().toString());
1121
1122             // update status icon and text
1123             updateServerStatusIconAndText(result);
1124             showServerStatus();
1125             mAuthStatusIcon = 0;
1126             mAuthStatusText = 0;
1127             showAuthStatus();
1128
1129             // update input controls state
1130             showRefreshButton();
1131             mOkButton.setEnabled(false);
1132
1133             // very special case (TODO: move to a common place for all the remote operations) (dangerous here?)
1134             if (result.getCode() == ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED) {
1135                 mLastSslUntrustedServerResult = result;
1136                 showDialog(DIALOG_SSL_VALIDATOR);
1137             }
1138
1139         } else {    // authorization fail due to client side - probably wrong credentials
1140             updateAuthStatusIconAndText(result);
1141             showAuthStatus();
1142             Log_OC.d(TAG, "Access failed: " + result.getLogMessage());
1143         }
1144     }
1145
1146
1147     /**
1148      * Sets the proper response to get that the Account Authenticator that started this activity saves
1149      * a new authorization token for mAccount.
1150      */
1151     private void updateToken() {
1152         Bundle response = new Bundle();
1153         response.putString(AccountManager.KEY_ACCOUNT_NAME, mAccount.name);
1154         response.putString(AccountManager.KEY_ACCOUNT_TYPE, mAccount.type);
1155
1156         if (AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN.equals(mCurrentAuthTokenType)) {
1157             response.putString(AccountManager.KEY_AUTHTOKEN, mAuthToken);
1158             // the next line is necessary; by now, notifications are calling directly to the AuthenticatorActivity to update, without AccountManager intervention
1159             mAccountMgr.setAuthToken(mAccount, mCurrentAuthTokenType, mAuthToken);
1160
1161         } else if (AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE.equals(mCurrentAuthTokenType)) {
1162             response.putString(AccountManager.KEY_AUTHTOKEN, mAuthToken);
1163             // the next line is necessary; by now, notifications are calling directly to the AuthenticatorActivity to update, without AccountManager intervention
1164             mAccountMgr.setAuthToken(mAccount, mCurrentAuthTokenType, mAuthToken);
1165
1166         } else {
1167             response.putString(AccountManager.KEY_AUTHTOKEN, mPasswordInput.getText().toString());
1168             mAccountMgr.setPassword(mAccount, mPasswordInput.getText().toString());
1169         }
1170         setAccountAuthenticatorResult(response);
1171     }
1172
1173
1174     /**
1175      * Creates a new account through the Account Authenticator that started this activity.
1176      *
1177      * This makes the account permanent.
1178      *
1179      * TODO Decide how to name the OAuth accounts
1180      */
1181     private void createAccount() {
1182         /// create and save new ownCloud account
1183         boolean isOAuth = AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN.equals(mCurrentAuthTokenType);
1184         boolean isSaml =  AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE.equals(mCurrentAuthTokenType);
1185
1186         Uri uri = Uri.parse(mHostBaseUrl);
1187         String username = mUsernameInput.getText().toString().trim();
1188         if (isSaml) {
1189             username = mAccountNameInput.getText().toString().trim();
1190
1191         } else if (isOAuth) {
1192             username = "OAuth_user" + (new java.util.Random(System.currentTimeMillis())).nextLong();
1193         }
1194         String accountName = username + "@" + uri.getHost();
1195         if (uri.getPort() >= 0) {
1196             accountName += ":" + uri.getPort();
1197         }
1198         mAccount = new Account(accountName, AccountAuthenticator.ACCOUNT_TYPE);
1199         if (isOAuth || isSaml) {
1200             mAccountMgr.addAccountExplicitly(mAccount, "", null);  // with external authorizations, the password is never input in the app
1201         } else {
1202             mAccountMgr.addAccountExplicitly(mAccount, mPasswordInput.getText().toString(), null);
1203         }
1204
1205         /// add the new account as default in preferences, if there is none already
1206         Account defaultAccount = AccountUtils.getCurrentOwnCloudAccount(this);
1207         if (defaultAccount == null) {
1208             SharedPreferences.Editor editor = PreferenceManager
1209                     .getDefaultSharedPreferences(this).edit();
1210             editor.putString("select_oc_account", accountName);
1211             editor.commit();
1212         }
1213
1214         /// prepare result to return to the Authenticator
1215         //  TODO check again what the Authenticator makes with it; probably has the same effect as addAccountExplicitly, but it's not well done
1216         final Intent intent = new Intent();
1217         intent.putExtra(AccountManager.KEY_ACCOUNT_TYPE,    AccountAuthenticator.ACCOUNT_TYPE);
1218         intent.putExtra(AccountManager.KEY_ACCOUNT_NAME,    mAccount.name);
1219         /*if (!isOAuth)
1220             intent.putExtra(AccountManager.KEY_AUTHTOKEN,   AccountAuthenticator.ACCOUNT_TYPE); */
1221         intent.putExtra(AccountManager.KEY_USERDATA,        username);
1222         if (isOAuth || isSaml) {
1223             mAccountMgr.setAuthToken(mAccount, mCurrentAuthTokenType, mAuthToken);
1224         }
1225         /// add user data to the new account; TODO probably can be done in the last parameter addAccountExplicitly, or in KEY_USERDATA
1226         mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_OC_VERSION,    mDiscoveredVersion.toString());
1227         mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_OC_BASE_URL,   mHostBaseUrl);
1228         if (isSaml) {
1229             mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_SUPPORTS_SAML_WEB_SSO, "TRUE");
1230         } else if (isOAuth) {
1231             mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_SUPPORTS_OAUTH2, "TRUE");
1232         }
1233
1234         setAccountAuthenticatorResult(intent.getExtras());
1235         setResult(RESULT_OK, intent);
1236
1237         /// immediately request for the synchronization of the new account
1238         Bundle bundle = new Bundle();
1239         bundle.putBoolean(ContentResolver.SYNC_EXTRAS_MANUAL, true);
1240         ContentResolver.requestSync(mAccount, AccountAuthenticator.AUTHORITY, bundle);
1241     }
1242
1243
1244     /**
1245      * {@inheritDoc}
1246      *
1247      * Necessary to update the contents of the SSL Dialog
1248      *
1249      * TODO move to some common place for all possible untrusted SSL failures
1250      */
1251     @Override
1252     protected void onPrepareDialog(int id, Dialog dialog, Bundle args) {
1253         switch (id) {
1254         case DIALOG_LOGIN_PROGRESS:
1255         case DIALOG_CERT_NOT_SAVED:
1256         case DIALOG_OAUTH2_LOGIN_PROGRESS:
1257             break;
1258         case DIALOG_SSL_VALIDATOR: {
1259             ((SslValidatorDialog)dialog).updateResult(mLastSslUntrustedServerResult);
1260             break;
1261         }
1262         default:
1263             Log_OC.e(TAG, "Incorrect dialog called with id = " + id);
1264         }
1265     }
1266
1267
1268     /**
1269      * {@inheritDoc}
1270      */
1271     @Override
1272     protected Dialog onCreateDialog(int id) {
1273         Dialog dialog = null;
1274         switch (id) {
1275         case DIALOG_LOGIN_PROGRESS: {
1276             /// simple progress dialog
1277             ProgressDialog working_dialog = new ProgressDialog(this);
1278             working_dialog.setMessage(getResources().getString(R.string.auth_trying_to_login));
1279             working_dialog.setIndeterminate(true);
1280             working_dialog.setCancelable(true);
1281             working_dialog
1282             .setOnCancelListener(new DialogInterface.OnCancelListener() {
1283                 @Override
1284                 public void onCancel(DialogInterface dialog) {
1285                     /// TODO study if this is enough
1286                     Log_OC.i(TAG, "Login canceled");
1287                     if (mOperationThread != null) {
1288                         mOperationThread.interrupt();
1289                         finish();
1290                     }
1291                 }
1292             });
1293             dialog = working_dialog;
1294             break;
1295         }
1296         case DIALOG_OAUTH2_LOGIN_PROGRESS: {
1297             ProgressDialog working_dialog = new ProgressDialog(this);
1298             working_dialog.setMessage(String.format("Getting authorization"));
1299             working_dialog.setIndeterminate(true);
1300             working_dialog.setCancelable(true);
1301             working_dialog
1302             .setOnCancelListener(new DialogInterface.OnCancelListener() {
1303                 @Override
1304                 public void onCancel(DialogInterface dialog) {
1305                     Log_OC.i(TAG, "Login canceled");
1306                     finish();
1307                 }
1308             });
1309             dialog = working_dialog;
1310             break;
1311         }
1312         case DIALOG_SSL_VALIDATOR: {
1313             /// TODO start to use new dialog interface, at least for this (it is a FragmentDialog already)
1314             dialog = SslValidatorDialog.newInstance(this, mLastSslUntrustedServerResult, this);
1315             break;
1316         }
1317         case DIALOG_CERT_NOT_SAVED: {
1318             AlertDialog.Builder builder = new AlertDialog.Builder(this);
1319             builder.setMessage(getResources().getString(R.string.ssl_validator_not_saved));
1320             builder.setCancelable(false);
1321             builder.setPositiveButton(R.string.common_ok, new DialogInterface.OnClickListener() {
1322                 @Override
1323                 public void onClick(DialogInterface dialog, int which) {
1324                     dialog.dismiss();
1325                 };
1326             });
1327             dialog = builder.create();
1328             break;
1329         }
1330         default:
1331             Log_OC.e(TAG, "Incorrect dialog called with id = " + id);
1332         }
1333         return dialog;
1334     }
1335
1336
1337     /**
1338      * Starts and activity to open the 'new account' page in the ownCloud web site
1339      *
1340      * @param view      'Account register' button
1341      */
1342     public void onRegisterClick(View view) {
1343         Intent register = new Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.url_account_register)));
1344         setResult(RESULT_CANCELED);
1345         startActivity(register);
1346     }
1347
1348
1349     /**
1350      * Updates the content and visibility state of the icon and text associated
1351      * to the last check on the ownCloud server.
1352      */
1353     private void showServerStatus() {
1354         TextView tv = (TextView) findViewById(R.id.server_status_text);
1355
1356         if (mServerStatusIcon == 0 && mServerStatusText == 0) {
1357             tv.setVisibility(View.INVISIBLE);
1358
1359         } else {
1360             tv.setText(mServerStatusText);
1361             tv.setCompoundDrawablesWithIntrinsicBounds(mServerStatusIcon, 0, 0, 0);
1362             tv.setVisibility(View.VISIBLE);
1363         }
1364
1365     }
1366
1367
1368     /**
1369      * Updates the content and visibility state of the icon and text associated
1370      * to the interactions with the OAuth authorization server.
1371      */
1372     private void showAuthStatus() {
1373         if (mAuthStatusIcon == 0 && mAuthStatusText == 0) {
1374             mAuthStatusLayout.setVisibility(View.INVISIBLE);
1375
1376         } else {
1377             mAuthStatusLayout.setText(mAuthStatusText);
1378             mAuthStatusLayout.setCompoundDrawablesWithIntrinsicBounds(mAuthStatusIcon, 0, 0, 0);
1379             mAuthStatusLayout.setVisibility(View.VISIBLE);
1380         }
1381     }
1382
1383
1384     private void showRefreshButton() {
1385         mRefreshButton.setVisibility(View.VISIBLE);
1386     }
1387
1388     private void hideRefreshButton() {
1389         mRefreshButton.setVisibility(View.GONE);
1390     }
1391
1392     /**
1393      * Called when the refresh button in the input field for ownCloud host is clicked.
1394      *
1395      * Performs a new check on the URL in the input field.
1396      *
1397      * @param view      Refresh 'button'
1398      */
1399     public void onRefreshClick(View view) {
1400         checkOcServer();
1401     }
1402
1403
1404     /**
1405      * Called when the eye icon in the password field is clicked.
1406      *
1407      * Toggles the visibility of the password in the field.
1408      */
1409     public void onViewPasswordClick() {
1410         int selectionStart = mPasswordInput.getSelectionStart();
1411         int selectionEnd = mPasswordInput.getSelectionEnd();
1412         if (isPasswordVisible()) {
1413             hidePassword();
1414         } else {
1415             showPassword();
1416         }
1417         mPasswordInput.setSelection(selectionStart, selectionEnd);
1418     }
1419
1420
1421     /**
1422      * Called when the checkbox for OAuth authorization is clicked.
1423      *
1424      * Hides or shows the input fields for user & password.
1425      *
1426      * @param view      'View password' 'button'
1427      */
1428     public void onCheckClick(View view) {
1429         CheckBox oAuth2Check = (CheckBox)view;
1430         if (oAuth2Check.isChecked()) {
1431             mCurrentAuthTokenType = AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN;
1432         } else {
1433             mCurrentAuthTokenType = AccountAuthenticator.AUTH_TOKEN_TYPE_PASSWORD;
1434         }
1435         adaptViewAccordingToAuthenticationMethod();
1436     }
1437
1438
1439     /**
1440      * Changes the visibility of input elements depending on
1441      * the current authorization method.
1442      */
1443     private void adaptViewAccordingToAuthenticationMethod () {
1444         if (AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN.equals(mCurrentAuthTokenType)) {
1445             // OAuth 2 authorization
1446             mOAuthAuthEndpointText.setVisibility(View.VISIBLE);
1447             mOAuthTokenEndpointText.setVisibility(View.VISIBLE);
1448             mUsernameInput.setVisibility(View.GONE);
1449             mPasswordInput.setVisibility(View.GONE);
1450             mAccountNameInput.setVisibility(View.GONE);
1451             mSsoWebView.setVisibility(View.GONE);
1452
1453         } else if (AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE.equals(mCurrentAuthTokenType)) {
1454             // SAML-based web Single Sign On
1455             mOAuthAuthEndpointText.setVisibility(View.GONE);
1456             mOAuthTokenEndpointText.setVisibility(View.GONE);
1457             mUsernameInput.setVisibility(View.GONE);
1458             mPasswordInput.setVisibility(View.GONE);
1459             mAccountNameInput.setVisibility(View.VISIBLE);
1460             mSsoWebView.setVisibility(View.VISIBLE);
1461
1462         } else {
1463             // basic HTTP authorization
1464             mOAuthAuthEndpointText.setVisibility(View.GONE);
1465             mOAuthTokenEndpointText.setVisibility(View.GONE);
1466             mUsernameInput.setVisibility(View.VISIBLE);
1467             mPasswordInput.setVisibility(View.VISIBLE);
1468             mAccountNameInput.setVisibility(View.GONE);
1469             mSsoWebView.setVisibility(View.GONE);
1470         }
1471     }
1472
1473     /**
1474      * Called from SslValidatorDialog when a new server certificate was correctly saved.
1475      */
1476     public void onSavedCertificate() {
1477         checkOcServer();
1478     }
1479
1480     /**
1481      * Called from SslValidatorDialog when a new server certificate could not be saved
1482      * when the user requested it.
1483      */
1484     @Override
1485     public void onFailedSavingCertificate() {
1486         showDialog(DIALOG_CERT_NOT_SAVED);
1487     }
1488
1489
1490     /**
1491      *  Called when the 'action' button in an IME is pressed ('enter' in software keyboard).
1492      *
1493      *  Used to trigger the authorization check when the user presses 'enter' after writing the password.
1494      */
1495     @Override
1496     public boolean onEditorAction(TextView inputField, int actionId, KeyEvent event) {
1497         if (inputField != null && inputField.equals(mPasswordInput) &&
1498                 actionId == EditorInfo.IME_ACTION_DONE) {
1499             if (mOkButton.isEnabled()) {
1500                 mOkButton.performClick();
1501             }
1502         }
1503         return false;   // always return false to grant that the software keyboard is hidden anyway
1504     }
1505
1506
1507     private abstract static class RightDrawableOnTouchListener implements OnTouchListener  {
1508
1509         private int fuzz = 75;
1510
1511         /**
1512          * {@inheritDoc}
1513          */
1514         @Override
1515         public boolean onTouch(View view, MotionEvent event) {
1516             Drawable rightDrawable = null;
1517             if (view instanceof TextView) {
1518                 Drawable[] drawables = ((TextView)view).getCompoundDrawables();
1519                 if (drawables.length > 2) {
1520                     rightDrawable = drawables[2];
1521                 }
1522             }
1523             if (rightDrawable != null) {
1524                 final int x = (int) event.getX();
1525                 final int y = (int) event.getY();
1526                 final Rect bounds = rightDrawable.getBounds();
1527                 if (x >= (view.getRight() - bounds.width() - fuzz) && x <= (view.getRight() - view.getPaddingRight() + fuzz)
1528                     && y >= (view.getPaddingTop() - fuzz) && y <= (view.getHeight() - view.getPaddingBottom()) + fuzz) {
1529
1530                     return onDrawableTouch(event);
1531                 }
1532             }
1533             return false;
1534         }
1535
1536         public abstract boolean onDrawableTouch(final MotionEvent event);
1537     }
1538
1539
1540     @Override
1541     public void onSsoFinished(String sessionCookie) {
1542         //Toast.makeText(this, "got cookies: " + sessionCookie, Toast.LENGTH_LONG).show();
1543
1544         if (sessionCookie != null && sessionCookie.length() > 0) {
1545             Log_OC.d(TAG, "Successful SSO - time to save the account");
1546             mAuthToken = sessionCookie;
1547             if (mAction == ACTION_CREATE) {
1548                 createAccount();
1549
1550             } else {
1551                 updateToken();
1552             }
1553
1554             finish();
1555
1556         } else {
1557             // TODO - show fail
1558             Log_OC.d(TAG, "SSO failed");
1559         }
1560     }
1561
1562 }