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.net.Uri;
  46 import android.os.Bundle;
  47 import android.os.Handler;
  48 import android.preference.PreferenceManager;
  49 import android.text.InputType;
  50 import android.view.KeyEvent;
  51 import android.view.View;
  52 import android.view.View.OnFocusChangeListener;
  53 import android.view.Window;
  54 import android.view.inputmethod.EditorInfo;
  55 import android.widget.CheckBox;
  56 import android.widget.EditText;
  57 import android.widget.Button;
  58 import android.widget.ImageView;
  59 import android.widget.TextView;
  60 import android.widget.Toast;
  61 import android.widget.TextView.OnEditorActionListener;
  62
  63 import com.owncloud.android.R;
  64
  65 import eu.alefzero.webdav.WebdavClient;
  66
  67 /**
  68  * This Activity is used to add an ownCloud account to the App
  69  *
  70  * @author Bartek Przybylski
  71  * @author David A. Velasco
  72  */
  73 public class AuthenticatorActivity extends AccountAuthenticatorActivity
  74         implements  OnRemoteOperationListener, OnSslValidatorListener, OnFocusChangeListener, OnEditorActionListener {
  75
  76     private static final String TAG = AuthenticatorActivity.class.getSimpleName();
  77
  78     public static final String EXTRA_ACCOUNT = "ACCOUNT";
  79     public static final String EXTRA_USER_NAME = "USER_NAME";
  80     public static final String EXTRA_HOST_NAME = "HOST_NAME";
  81     public static final String EXTRA_ACTION = "ACTION";
  82
  83     private static final String KEY_HOST_URL_TEXT = "HOST_URL_TEXT";
  84     private static final String KEY_OC_VERSION = "OC_VERSION";
  85     private static final String KEY_ACCOUNT = "ACCOUNT";
  86     private static final String KEY_STATUS_TEXT = "STATUS_TEXT";
  87     private static final String KEY_STATUS_ICON = "STATUS_ICON";
  88     private static final String KEY_STATUS_CORRECT = "STATUS_CORRECT";
  89     private static final String KEY_IS_SSL_CONN = "IS_SSL_CONN";
  90     private static final String KEY_OAUTH2_STATUS_TEXT = "OAUTH2_STATUS_TEXT";
  91     private static final String KEY_OAUTH2_STATUS_ICON = "OAUTH2_STATUS_ICON";
  92
  93     private static final String OAUTH_MODE_ON = "on";
  94     private static final String OAUTH_MODE_OFF = "off";
  95     private static final String OAUTH_MODE_OPTIONAL = "optional";
  96
  97     private static final int DIALOG_LOGIN_PROGRESS = 0;
  98     private static final int DIALOG_SSL_VALIDATOR = 1;
  99     private static final int DIALOG_CERT_NOT_SAVED = 2;
 100     private static final int DIALOG_OAUTH2_LOGIN_PROGRESS = 3;
 101
 102     public static final byte ACTION_CREATE = 0;
 103     public static final byte ACTION_UPDATE_TOKEN = 1;
 104
 105
 106     private String mHostBaseUrl;
 107     private OwnCloudVersion mDiscoveredVersion;
 108
 109     private int mStatusText, mStatusIcon;
 110     private boolean mStatusCorrect, mIsSslConn;
 111     private int mOAuth2StatusText, mOAuth2StatusIcon;
 112
 113     private final Handler mHandler = new Handler();
 114     private Thread mOperationThread;
 115     private OwnCloudServerCheckOperation mOcServerChkOperation;
 116     private ExistenceCheckOperation mAuthCheckOperation;
 117     private RemoteOperationResult mLastSslUntrustedServerResult;
 118
 119     private Uri mNewCapturedUriFromOAuth2Redirection;
 120
 121     private AccountManager mAccountMgr;
 122     private boolean mJustCreated;
 123     private byte mAction;
 124     private Account mAccount;
 125
 126     private ImageView mRefreshButton;
 127     private ImageView mViewPasswordButton;
 128     private EditText mHostUrlInput;
 129     private EditText mUsernameInput;
 130     private EditText mPasswordInput;
 131     private CheckBox mOAuth2Check;
 132     private String mOAuthAccessToken;
 133     private View mOkButton;
 134     private TextView mAuthStatusLayout;
 135
 136     private TextView mOAuthAuthEndpointText;
 137     private TextView mOAuthTokenEndpointText;
 138
 139
 140     /**
 141      * {@inheritDoc}
 142      *
 143      * IMPORTANT ENTRY POINT 1: activity is shown to the user
 144      */
 145     @Override
 146     protected void onCreate(Bundle savedInstanceState) {
 147         super.onCreate(savedInstanceState);
 148         getWindow().requestFeature(Window.FEATURE_NO_TITLE);
 149
 150         /// set view and get references to view elements
 151         setContentView(R.layout.account_setup);
 152         mRefreshButton = (ImageView) findViewById(R.id.refreshButton);
 153         mViewPasswordButton = (ImageView) findViewById(R.id.viewPasswordButton);
 154         mHostUrlInput = (EditText) findViewById(R.id.hostUrlInput);
 155         mUsernameInput = (EditText) findViewById(R.id.account_username);
 156         mPasswordInput = (EditText) findViewById(R.id.account_password);
 157         mOAuthAuthEndpointText = (TextView)findViewById(R.id.oAuthEntryPoint_1);
 158         mOAuthTokenEndpointText = (TextView)findViewById(R.id.oAuthEntryPoint_2);
 159         mOAuth2Check = (CheckBox) findViewById(R.id.oauth_onOff_check);
 160         mOkButton = findViewById(R.id.buttonOK);
 161         mAuthStatusLayout = (TextView) findViewById(R.id.auth_status_text);
 162
 163         /// complete label for 'register account' button
 164         Button b = (Button) findViewById(R.id.account_register);
 165         if (b != null) {
 166             b.setText(String.format(getString(R.string.auth_register), getString(R.string.app_name)));
 167         }
 168
 169         /// bind view elements to listeners
 170         mHostUrlInput.setOnFocusChangeListener(this);
 171         mPasswordInput.setOnFocusChangeListener(this);
 172         mPasswordInput.setImeOptions(EditorInfo.IME_ACTION_DONE);
 173         mPasswordInput.setOnEditorActionListener(this);
 174
 175         /// initialization
 176         mAccountMgr = AccountManager.get(this);
 177         mNewCapturedUriFromOAuth2Redirection = null;
 178         mAction = getIntent().getByteExtra(EXTRA_ACTION, ACTION_CREATE);
 179         mAccount = null;
 180
 181         if (savedInstanceState == null) {
 182             /// connection state and info
 183             mStatusText = mStatusIcon = 0;
 184             mStatusCorrect = false;
 185             mIsSslConn = false;
 186             updateConnStatus();
 187             updateAuthStatus();
 188
 189             /// retrieve extras from intent
 190             String tokenType = getIntent().getExtras().getString(AccountAuthenticator.KEY_AUTH_TOKEN_TYPE);
 191             boolean oAuthRequired = AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN.equals(tokenType) || OAUTH_MODE_ON.equals(getString(R.string.oauth2_mode));
 192
 193             mAccount = getIntent().getExtras().getParcelable(EXTRA_ACCOUNT);
 194             if (mAccount != null) {
 195                 String ocVersion = mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_OC_VERSION);
 196                 if (ocVersion != null) {
 197                     mDiscoveredVersion = new OwnCloudVersion(ocVersion);
 198                 }
 199                 mHostBaseUrl = mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_OC_BASE_URL);
 200                 mHostUrlInput.setText(mHostBaseUrl);
 201                 String userName = mAccount.name.substring(0, mAccount.name.lastIndexOf('@'));
 202                 mUsernameInput.setText(userName);
 203                 oAuthRequired = (mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_SUPPORTS_OAUTH2) != null);
 204             }
 205             mOAuth2Check.setChecked(oAuthRequired);
 206             changeViewByOAuth2Check(oAuthRequired);
 207
 208
 209         } else {
 210             loadSavedInstanceState(savedInstanceState);
 211         }
 212
 213         if (!OAUTH_MODE_OPTIONAL.equals(getString(R.string.oauth2_mode))) {
 214             mOAuth2Check.setVisibility(View.GONE);
 215         }
 216
 217         if (mAction == ACTION_UPDATE_TOKEN) {
 218             /// lock things that should not change
 219             mHostUrlInput.setEnabled(false);
 220             mUsernameInput.setEnabled(false);
 221             mOAuth2Check.setVisibility(View.GONE);
 222             checkOcServer();
 223         }
 224
 225         mPasswordInput.setText("");     // clean password to avoid social hacking (disadvantage: password in removed if the device is turned aside)
 226         mJustCreated = true;
 227     }
 228
 229
 230     /**
 231      * Saves relevant state before {@link #onPause()}
 232      *
 233      * Do NOT save {@link #mNewCapturedUriFromOAuth2Redirection}; it keeps a temporal flag, intended to defer the
 234      * processing of the redirection caught in {@link #onNewIntent(Intent)} until {@link #onResume()}
 235      *
 236      * See {@link #loadSavedInstanceState(Bundle)}
 237      */
 238     @Override
 239     protected void onSaveInstanceState(Bundle outState) {
 240         super.onSaveInstanceState(outState);
 241
 242         /// connection state and info
 243         outState.putInt(KEY_STATUS_TEXT, mStatusText);
 244         outState.putInt(KEY_STATUS_ICON, mStatusIcon);
 245         outState.putBoolean(KEY_STATUS_CORRECT, mStatusCorrect);
 246         outState.putBoolean(KEY_IS_SSL_CONN, mIsSslConn);
 247
 248         /// server data
 249         if (mDiscoveredVersion != null)
 250             outState.putString(KEY_OC_VERSION, mDiscoveredVersion.toString());
 251         outState.putString(KEY_HOST_URL_TEXT, mHostBaseUrl);
 252
 253         /// account data, if updating
 254         if (mAccount != null)
 255             outState.putParcelable(KEY_ACCOUNT, mAccount);
 256
 257         // Saving the state of oAuth2 components.
 258         outState.putInt(KEY_OAUTH2_STATUS_ICON, mOAuth2StatusIcon);
 259         outState.putInt(KEY_OAUTH2_STATUS_TEXT, mOAuth2StatusText);
 260
 261     }
 262
 263
 264     /**
 265      * Loads saved state
 266      *
 267      * See {@link #onSaveInstanceState(Bundle)}.
 268      *
 269      * @param savedInstanceState    Saved state, as received in {@link #onCreate(Bundle)}.
 270      */
 271     private void loadSavedInstanceState(Bundle savedInstanceState) {
 272         /// connection state and info
 273         mStatusCorrect = savedInstanceState.getBoolean(KEY_STATUS_CORRECT);
 274         mIsSslConn = savedInstanceState.getBoolean(KEY_IS_SSL_CONN);
 275         mStatusText = savedInstanceState.getInt(KEY_STATUS_TEXT);
 276         mStatusIcon = savedInstanceState.getInt(KEY_STATUS_ICON);
 277         updateConnStatus();
 278
 279         /// UI settings depending upon connection
 280         mOkButton.setEnabled(mStatusCorrect);
 281         if (!mStatusCorrect)
 282             mRefreshButton.setVisibility(View.VISIBLE); // seems that setting visibility is necessary
 283         else
 284             mRefreshButton.setVisibility(View.INVISIBLE);
 285
 286         /// server data
 287         String ocVersion = savedInstanceState.getString(KEY_OC_VERSION);
 288         if (ocVersion != null)
 289             mDiscoveredVersion = new OwnCloudVersion(ocVersion);
 290         mHostBaseUrl = savedInstanceState.getString(KEY_HOST_URL_TEXT);
 291
 292         // account data, if updating
 293         mAccount = savedInstanceState.getParcelable(KEY_ACCOUNT);
 294
 295         // state of oAuth2 components
 296         mOAuth2StatusIcon = savedInstanceState.getInt(KEY_OAUTH2_STATUS_ICON);
 297         mOAuth2StatusText = savedInstanceState.getInt(KEY_OAUTH2_STATUS_TEXT);
 298         // END of getting the state of oAuth2 components.
 299     }
 300
 301
 302     /**
 303      * The redirection triggered by the OAuth authentication server as response to the GET AUTHORIZATION request
 304      * is caught here.
 305      *
 306      * To make this possible, this activity needs to be qualified with android:launchMode = "singleTask" in the
 307      * AndroidManifest.xml file.
 308      */
 309     @Override
 310     protected void onNewIntent (Intent intent) {
 311         Log_OC.d(TAG, "onNewIntent()");
 312         Uri data = intent.getData();
 313         if (data != null && data.toString().startsWith(getString(R.string.oauth2_redirect_uri))) {
 314             mNewCapturedUriFromOAuth2Redirection = data;
 315         }
 316     }
 317
 318
 319     /**
 320      * The redirection triggered by the OAuth authentication server as response to the GET AUTHORIZATION, and
 321      * deferred in {@link #onNewIntent(Intent)}, is processed here.
 322      */
 323     @Override
 324     protected void onResume() {
 325         super.onResume();
 326         // the state of mOAuth2Check is automatically recovered between configuration changes, but not before onCreate() finishes; so keep the next lines here
 327         changeViewByOAuth2Check(mOAuth2Check.isChecked());
 328         if (mAction == ACTION_UPDATE_TOKEN && mJustCreated) {
 329             if (mOAuth2Check.isChecked())
 330                 Toast.makeText(this, R.string.auth_expired_oauth_token_toast, Toast.LENGTH_LONG).show();
 331             else
 332                 Toast.makeText(this, R.string.auth_expired_basic_auth_toast, Toast.LENGTH_LONG).show();
 333         }
 334
 335         if (mNewCapturedUriFromOAuth2Redirection != null) {
 336             getOAuth2AccessTokenFromCapturedRedirection();
 337         }
 338
 339         mJustCreated = false;
 340     }
 341
 342
 343     /**
 344      * Parses the redirection with the response to the GET AUTHORIZATION request to the
 345      * oAuth server and requests for the access token (GET ACCESS TOKEN)
 346      */
 347     private void getOAuth2AccessTokenFromCapturedRedirection() {
 348         /// Parse data from OAuth redirection
 349         String queryParameters = mNewCapturedUriFromOAuth2Redirection.getQuery();
 350         mNewCapturedUriFromOAuth2Redirection = null;
 351
 352         /// Showing the dialog with instructions for the user.
 353         showDialog(DIALOG_OAUTH2_LOGIN_PROGRESS);
 354
 355         /// GET ACCESS TOKEN to the oAuth server
 356         RemoteOperation operation = new OAuth2GetAccessToken(   getString(R.string.oauth2_client_id),
 357                                                                 getString(R.string.oauth2_redirect_uri),
 358                                                                 getString(R.string.oauth2_grant_type),
 359                                                                 queryParameters);
 360         //WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(getString(R.string.oauth2_url_endpoint_access)), getApplicationContext());
 361         WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mOAuthTokenEndpointText.getText().toString().trim()), getApplicationContext());
 362         operation.execute(client, this, mHandler);
 363     }
 364
 365
 366
 367     /**
 368      * Handles the change of focus on the text inputs for the server URL and the password
 369      */
 370     public void onFocusChange(View view, boolean hasFocus) {
 371         if (view.getId() == R.id.hostUrlInput) {
 372             onUrlInputFocusChanged((TextView) view, hasFocus);
 373
 374         } else if (view.getId() == R.id.account_password) {
 375             onPasswordFocusChanged((TextView) view, hasFocus);
 376         }
 377     }
 378
 379
 380     /**
 381      * Handles changes in focus on the text input for the server URL.
 382      *
 383      * IMPORTANT ENTRY POINT 2: When (!hasFocus), user wrote the server URL and changed to
 384      * other field. The operation to check the existence of the server in the entered URL is
 385      * started.
 386      *
 387      * When hasFocus:    user 'comes back' to write again the server URL.
 388      *
 389      * @param hostInput     TextView with the URL input field receiving the change of focus.
 390      * @param hasFocus      'True' if focus is received, 'false' if is lost
 391      */
 392     private void onUrlInputFocusChanged(TextView hostInput, boolean hasFocus) {
 393         if (!hasFocus) {
 394             checkOcServer();
 395
 396         } else {
 397             // avoids that the 'connect' button can be clicked if the test was previously passed
 398             mOkButton.setEnabled(false);
 399         }
 400     }
 401
 402
 403     private void checkOcServer() {
 404         String uri = mHostUrlInput.getText().toString().trim();
 405         if (uri.length() != 0) {
 406             mStatusText = R.string.auth_testing_connection;
 407             mStatusIcon = R.drawable.progress_small;
 408             updateConnStatus();
 409             /** TODO cancel previous connection check if the user tries to ammend a wrong URL
 410             if(mConnChkOperation != null) {
 411                 mConnChkOperation.cancel();
 412             } */
 413             mOcServerChkOperation = new  OwnCloudServerCheckOperation(uri, this);
 414             WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(uri), this);
 415             mHostBaseUrl = "";
 416             mDiscoveredVersion = null;
 417             mOperationThread = mOcServerChkOperation.execute(client, this, mHandler);
 418         } else {
 419             mRefreshButton.setVisibility(View.INVISIBLE);
 420             mStatusText = 0;
 421             mStatusIcon = 0;
 422             updateConnStatus();
 423         }
 424     }
 425
 426
 427     /**
 428      * Handles changes in focus on the text input for the password (basic authorization).
 429      *
 430      * When (hasFocus), the button to toggle password visibility is shown.
 431      *
 432      * When (!hasFocus), the button is made invisible and the password is hidden.
 433      *
 434      * @param passwordInput    TextView with the password input field receiving the change of focus.
 435      * @param hasFocus          'True' if focus is received, 'false' if is lost
 436      */
 437     private void onPasswordFocusChanged(TextView passwordInput, boolean hasFocus) {
 438         if (hasFocus) {
 439             mViewPasswordButton.setVisibility(View.VISIBLE);
 440         } else {
 441             int input_type = InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD;
 442             passwordInput.setInputType(input_type);
 443             mViewPasswordButton.setVisibility(View.INVISIBLE);
 444         }
 445     }
 446
 447
 448
 449     /**
 450      * Cancels the authenticator activity
 451      *
 452      * IMPORTANT ENTRY POINT 3: Never underestimate the importance of cancellation
 453      *
 454      * This method is bound in the layout/acceoun_setup.xml resource file.
 455      *
 456      * @param view      Cancel button
 457      */
 458     public void onCancelClick(View view) {
 459         setResult(RESULT_CANCELED);     // TODO review how is this related to AccountAuthenticator (debugging)
 460         finish();
 461     }
 462
 463
 464
 465     /**
 466      * Checks the credentials of the user in the root of the ownCloud server
 467      * before creating a new local account.
 468      *
 469      * For basic authorization, a check of existence of the root folder is
 470      * performed.
 471      *
 472      * For OAuth, starts the flow to get an access token; the credentials test
 473      * is postponed until it is available.
 474      *
 475      * IMPORTANT ENTRY POINT 4
 476      *
 477      * @param view      OK button
 478      */
 479     public void onOkClick(View view) {
 480         // this check should be unnecessary
 481         if (mDiscoveredVersion == null || !mDiscoveredVersion.isVersionValid()  || mHostBaseUrl == null || mHostBaseUrl.length() == 0) {
 482             mStatusIcon = R.drawable.common_error;
 483             mStatusText = R.string.auth_wtf_reenter_URL;
 484             updateConnStatus();
 485             mOkButton.setEnabled(false);
 486             Log_OC.wtf(TAG,  "The user was allowed to click 'connect' to an unchecked server!!");
 487             return;
 488         }
 489
 490         if (mOAuth2Check.isChecked()) {
 491             startOauthorization();
 492
 493         } else {
 494             checkBasicAuthorization();
 495         }
 496     }
 497
 498
 499     /**
 500      * Tests the credentials entered by the user performing a check of existence on
 501      * the root folder of the ownCloud server.
 502      */
 503     private void checkBasicAuthorization() {
 504         /// get the path to the root folder through WebDAV from the version server
 505         String webdav_path = AccountUtils.getWebdavPath(mDiscoveredVersion, false);
 506
 507         /// get basic credentials entered by user
 508         String username = mUsernameInput.getText().toString();
 509         String password = mPasswordInput.getText().toString();
 510
 511         /// be gentle with the user
 512         showDialog(DIALOG_LOGIN_PROGRESS);
 513
 514         /// test credentials accessing the root folder
 515         mAuthCheckOperation = new  ExistenceCheckOperation("", this, false);
 516         WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mHostBaseUrl + webdav_path), this);
 517         client.setBasicCredentials(username, password);
 518         mOperationThread = mAuthCheckOperation.execute(client, this, mHandler);
 519     }
 520
 521
 522     /**
 523      * Starts the OAuth 'grant type' flow to get an access token, with
 524      * a GET AUTHORIZATION request to the BUILT-IN authorization server.
 525      */
 526     private void startOauthorization() {
 527         // be gentle with the user
 528         mStatusIcon = R.drawable.progress_small;
 529         mStatusText = R.string.oauth_login_connection;
 530         updateAuthStatus();
 531
 532         // GET AUTHORIZATION request
 533         //Uri uri = Uri.parse(getString(R.string.oauth2_url_endpoint_auth));
 534         Uri uri = Uri.parse(mOAuthAuthEndpointText.getText().toString().trim());
 535         Uri.Builder uriBuilder = uri.buildUpon();
 536         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_RESPONSE_TYPE, getString(R.string.oauth2_response_type));
 537         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_REDIRECT_URI, getString(R.string.oauth2_redirect_uri));
 538         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_CLIENT_ID, getString(R.string.oauth2_client_id));
 539         uriBuilder.appendQueryParameter(OAuth2Constants.KEY_SCOPE, getString(R.string.oauth2_scope));
 540         //uriBuilder.appendQueryParameter(OAuth2Constants.KEY_STATE, whateverwewant);
 541         uri = uriBuilder.build();
 542         Log_OC.d(TAG, "Starting browser to view " + uri.toString());
 543         Intent i = new Intent(Intent.ACTION_VIEW, uri);
 544         startActivity(i);
 545     }
 546
 547
 548     /**
 549      * Callback method invoked when a RemoteOperation executed by this Activity finishes.
 550      *
 551      * Dispatches the operation flow to the right method.
 552      */
 553     @Override
 554     public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {
 555
 556         if (operation instanceof OwnCloudServerCheckOperation) {
 557             onOcServerCheckFinish((OwnCloudServerCheckOperation) operation, result);
 558
 559         } else if (operation instanceof OAuth2GetAccessToken) {
 560             onGetOAuthAccessTokenFinish((OAuth2GetAccessToken)operation, result);
 561
 562         } else if (operation instanceof ExistenceCheckOperation)  {
 563             onAuthorizationCheckFinish((ExistenceCheckOperation)operation, result);
 564
 565         }
 566     }
 567
 568
 569     /**
 570      * Processes the result of the server check performed when the user finishes the enter of the
 571      * server URL.
 572      *
 573      * @param operation     Server check performed.
 574      * @param result        Result of the check.
 575      */
 576     private void onOcServerCheckFinish(OwnCloudServerCheckOperation operation, RemoteOperationResult result) {
 577         /// update status icon and text
 578         updateStatusIconAndText(result);
 579         updateConnStatus();
 580
 581         /// save result state
 582         mStatusCorrect = result.isSuccess();
 583         mIsSslConn = (result.getCode() == ResultCode.OK_SSL);
 584
 585         /// very special case (TODO: move to a common place for all the remote operations)
 586         if (result.getCode() == ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED) {
 587             mLastSslUntrustedServerResult = result;
 588             showDialog(DIALOG_SSL_VALIDATOR);
 589         }
 590
 591         /// update the visibility of the 'retry connection' button
 592         if (!mStatusCorrect)
 593             mRefreshButton.setVisibility(View.VISIBLE);
 594         else
 595             mRefreshButton.setVisibility(View.INVISIBLE);
 596
 597         /// retrieve discovered version and normalize server URL
 598         mDiscoveredVersion = operation.getDiscoveredVersion();
 599         mHostBaseUrl = mHostUrlInput.getText().toString().trim();
 600         if (!mHostBaseUrl.toLowerCase().startsWith("http://") &&
 601             !mHostBaseUrl.toLowerCase().startsWith("https://")) {
 602
 603             if (mIsSslConn) {
 604                 mHostBaseUrl = "https://" + mHostBaseUrl;
 605             } else {
 606                 mHostBaseUrl = "http://" + mHostBaseUrl;
 607             }
 608
 609         }
 610         if (mHostBaseUrl.endsWith("/"))
 611             mHostBaseUrl = mHostBaseUrl.substring(0, mHostBaseUrl.length() - 1);
 612
 613         /// allow or not the user try to access the server
 614         mOkButton.setEnabled(mStatusCorrect);
 615     }
 616
 617
 618     /**
 619      * Chooses the right icon and text to show to the user for the received operation result.
 620      *
 621      * @param result    Result of a remote operation performed in this activity
 622      */
 623     private void updateStatusIconAndText(RemoteOperationResult result) {
 624         mStatusText = mStatusIcon = 0;
 625
 626         switch (result.getCode()) {
 627         case OK_SSL:
 628             mStatusIcon = android.R.drawable.ic_secure;
 629             mStatusText = R.string.auth_secure_connection;
 630             break;
 631
 632         case OK_NO_SSL:
 633         case OK:
 634             if (mHostUrlInput.getText().toString().trim().toLowerCase().startsWith("http://") ) {
 635                 mStatusText = R.string.auth_connection_established;
 636                 mStatusIcon = R.drawable.ic_ok;
 637             } else {
 638                 mStatusText = R.string.auth_nossl_plain_ok_title;
 639                 mStatusIcon = android.R.drawable.ic_partial_secure;
 640             }
 641             break;
 642
 643         case SSL_RECOVERABLE_PEER_UNVERIFIED:
 644             mStatusIcon = R.drawable.common_error;
 645             mStatusText = R.string.auth_ssl_unverified_server_title;
 646             break;
 647
 648         case BAD_OC_VERSION:
 649             mStatusIcon = R.drawable.common_error;
 650             mStatusText = R.string.auth_bad_oc_version_title;
 651             break;
 652         case WRONG_CONNECTION:
 653             mStatusIcon = R.drawable.common_error;
 654             mStatusText = R.string.auth_wrong_connection_title;
 655             break;
 656         case TIMEOUT:
 657             mStatusIcon = R.drawable.common_error;
 658             mStatusText = R.string.auth_timeout_title;
 659             break;
 660         case INCORRECT_ADDRESS:
 661             mStatusIcon = R.drawable.common_error;
 662             mStatusText = R.string.auth_incorrect_address_title;
 663             break;
 664
 665         case SSL_ERROR:
 666             mStatusIcon = R.drawable.common_error;
 667             mStatusText = R.string.auth_ssl_general_error_title;
 668             break;
 669
 670         case UNAUTHORIZED:
 671             mStatusIcon = R.drawable.common_error;
 672             mStatusText = R.string.auth_unauthorized;
 673             break;
 674         case HOST_NOT_AVAILABLE:
 675             mStatusIcon = R.drawable.common_error;
 676             mStatusText = R.string.auth_unknown_host_title;
 677             break;
 678         case NO_NETWORK_CONNECTION:
 679             mStatusIcon = R.drawable.no_network;
 680             mStatusText = R.string.auth_no_net_conn_title;
 681             break;
 682         case INSTANCE_NOT_CONFIGURED:
 683             mStatusIcon = R.drawable.common_error;
 684             mStatusText = R.string.auth_not_configured_title;
 685             break;
 686         case FILE_NOT_FOUND:
 687             mStatusIcon = R.drawable.common_error;
 688             mStatusText = R.string.auth_incorrect_path_title;
 689             break;
 690         case OAUTH2_ERROR:
 691             mStatusIcon = R.drawable.common_error;
 692             mStatusText = R.string.auth_oauth_error;
 693             break;
 694         case OAUTH2_ERROR_ACCESS_DENIED:
 695             mStatusIcon = R.drawable.common_error;
 696             mStatusText = R.string.auth_oauth_error_access_denied;
 697             break;
 698         case UNHANDLED_HTTP_CODE:
 699         case UNKNOWN_ERROR:
 700             mStatusIcon = R.drawable.common_error;
 701             mStatusText = R.string.auth_unknown_error_title;
 702             break;
 703
 704         default:
 705             break;
 706         }
 707     }
 708
 709
 710     /**
 711      * Processes the result of the request for and access token send
 712      * to an OAuth authorization server.
 713      *
 714      * @param operation     Operation performed requesting the access token.
 715      * @param result        Result of the operation.
 716      */
 717     private void onGetOAuthAccessTokenFinish(OAuth2GetAccessToken operation, RemoteOperationResult result) {
 718         try {
 719             dismissDialog(DIALOG_OAUTH2_LOGIN_PROGRESS);
 720         } catch (IllegalArgumentException e) {
 721             // NOTHING TO DO ; can't find out what situation that leads to the exception in this code, but user logs signal that it happens
 722         }
 723
 724         String webdav_path = AccountUtils.getWebdavPath(mDiscoveredVersion, true);
 725         if (result.isSuccess() && webdav_path != null) {
 726             /// be gentle with the user
 727             showDialog(DIALOG_LOGIN_PROGRESS);
 728
 729             /// time to test the retrieved access token on the ownCloud server
 730             mOAuthAccessToken = ((OAuth2GetAccessToken)operation).getResultTokenMap().get(OAuth2Constants.KEY_ACCESS_TOKEN);
 731             Log_OC.d(TAG, "Got ACCESS TOKEN: " + mOAuthAccessToken);
 732             mAuthCheckOperation = new ExistenceCheckOperation("", this, false);
 733             WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mHostBaseUrl + webdav_path), this);
 734             client.setBearerCredentials(mOAuthAccessToken);
 735             mAuthCheckOperation.execute(client, this, mHandler);
 736
 737         } else {
 738             updateStatusIconAndText(result);
 739             updateAuthStatus();
 740             Log_OC.d(TAG, "Access failed: " + result.getLogMessage());
 741         }
 742     }
 743
 744
 745     /**
 746      * Processes the result of the access check performed to try the user credentials.
 747      *
 748      * Creates a new account through the AccountManager.
 749      *
 750      * @param operation     Access check performed.
 751      * @param result        Result of the operation.
 752      */
 753     private void onAuthorizationCheckFinish(ExistenceCheckOperation operation, RemoteOperationResult result) {
 754         try {
 755             dismissDialog(DIALOG_LOGIN_PROGRESS);
 756         } catch (IllegalArgumentException e) {
 757             // NOTHING TO DO ; can't find out what situation that leads to the exception in this code, but user logs signal that it happens
 758         }
 759
 760         if (result.isSuccess()) {
 761             Log_OC.d(TAG, "Successful access - time to save the account");
 762
 763             if (mAction == ACTION_CREATE) {
 764                 createAccount();
 765
 766             } else {
 767                 updateToken();
 768             }
 769
 770             finish();
 771
 772         } else {
 773             updateStatusIconAndText(result);
 774             updateAuthStatus();
 775             Log_OC.d(TAG, "Access failed: " + result.getLogMessage());
 776         }
 777     }
 778
 779
 780     /**
 781      * Sets the proper response to get that the Account Authenticator that started this activity saves
 782      * a new authorization token for mAccount.
 783      */
 784     private void updateToken() {
 785         Bundle response = new Bundle();
 786         response.putString(AccountManager.KEY_ACCOUNT_NAME, mAccount.name);
 787         response.putString(AccountManager.KEY_ACCOUNT_TYPE, mAccount.type);
 788         boolean isOAuth = mOAuth2Check.isChecked();
 789         if (isOAuth) {
 790             response.putString(AccountManager.KEY_AUTHTOKEN, mOAuthAccessToken);
 791             // the next line is necessary; by now, notifications are calling directly to the AuthenticatorActivity to update, without AccountManager intervention
 792             mAccountMgr.setAuthToken(mAccount, AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN, mOAuthAccessToken);
 793         } else {
 794             response.putString(AccountManager.KEY_AUTHTOKEN, mPasswordInput.getText().toString());
 795             mAccountMgr.setPassword(mAccount, mPasswordInput.getText().toString());
 796         }
 797         setAccountAuthenticatorResult(response);
 798     }
 799
 800
 801     /**
 802      * Creates a new account through the Account Authenticator that started this activity.
 803      *
 804      * This makes the account permanent.
 805      *
 806      * TODO Decide how to name the OAuth accounts
 807      */
 808     private void createAccount() {
 809         /// create and save new ownCloud account
 810         boolean isOAuth = mOAuth2Check.isChecked();
 811
 812         Uri uri = Uri.parse(mHostBaseUrl);
 813         String username = mUsernameInput.getText().toString().trim();
 814         if (isOAuth) {
 815             username = "OAuth_user" + (new java.util.Random(System.currentTimeMillis())).nextLong();
 816         }
 817         String accountName = username + "@" + uri.getHost();
 818         if (uri.getPort() >= 0) {
 819             accountName += ":" + uri.getPort();
 820         }
 821         mAccount = new Account(accountName, AccountAuthenticator.ACCOUNT_TYPE);
 822         if (isOAuth) {
 823             mAccountMgr.addAccountExplicitly(mAccount, "", null);  // with our implementation, the password is never input in the app
 824         } else {
 825             mAccountMgr.addAccountExplicitly(mAccount, mPasswordInput.getText().toString(), null);
 826         }
 827
 828         /// add the new account as default in preferences, if there is none already
 829         Account defaultAccount = AccountUtils.getCurrentOwnCloudAccount(this);
 830         if (defaultAccount == null) {
 831             SharedPreferences.Editor editor = PreferenceManager
 832                     .getDefaultSharedPreferences(this).edit();
 833             editor.putString("select_oc_account", accountName);
 834             editor.commit();
 835         }
 836
 837         /// prepare result to return to the Authenticator
 838         //  TODO check again what the Authenticator makes with it; probably has the same effect as addAccountExplicitly, but it's not well done
 839         final Intent intent = new Intent();
 840         intent.putExtra(AccountManager.KEY_ACCOUNT_TYPE,    AccountAuthenticator.ACCOUNT_TYPE);
 841         intent.putExtra(AccountManager.KEY_ACCOUNT_NAME,    mAccount.name);
 842         if (!isOAuth)
 843             intent.putExtra(AccountManager.KEY_AUTHTOKEN,   AccountAuthenticator.ACCOUNT_TYPE); // TODO check this; not sure it's right; maybe
 844         intent.putExtra(AccountManager.KEY_USERDATA,        username);
 845         if (isOAuth) {
 846             mAccountMgr.setAuthToken(mAccount, AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN, mOAuthAccessToken);
 847         }
 848         /// add user data to the new account; TODO probably can be done in the last parameter addAccountExplicitly, or in KEY_USERDATA
 849         mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_OC_VERSION,    mDiscoveredVersion.toString());
 850         mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_OC_BASE_URL,   mHostBaseUrl);
 851         if (isOAuth)
 852             mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_SUPPORTS_OAUTH2, "TRUE");  // TODO this flag should be unnecessary
 853
 854         setAccountAuthenticatorResult(intent.getExtras());
 855         setResult(RESULT_OK, intent);
 856
 857         /// immediately request for the synchronization of the new account
 858         Bundle bundle = new Bundle();
 859         bundle.putBoolean(ContentResolver.SYNC_EXTRAS_MANUAL, true);
 860         ContentResolver.requestSync(mAccount, AccountAuthenticator.AUTHORITY, bundle);
 861     }
 862
 863
 864     /**
 865      * {@inheritDoc}
 866      *
 867      * Necessary to update the contents of the SSL Dialog
 868      *
 869      * TODO move to some common place for all possible untrusted SSL failures
 870      */
 871     @Override
 872     protected void onPrepareDialog(int id, Dialog dialog, Bundle args) {
 873         switch (id) {
 874         case DIALOG_LOGIN_PROGRESS:
 875         case DIALOG_CERT_NOT_SAVED:
 876         case DIALOG_OAUTH2_LOGIN_PROGRESS:
 877             break;
 878         case DIALOG_SSL_VALIDATOR: {
 879             ((SslValidatorDialog)dialog).updateResult(mLastSslUntrustedServerResult);
 880             break;
 881         }
 882         default:
 883             Log_OC.e(TAG, "Incorrect dialog called with id = " + id);
 884         }
 885     }
 886
 887
 888     /**
 889      * {@inheritDoc}
 890      */
 891     @Override
 892     protected Dialog onCreateDialog(int id) {
 893         Dialog dialog = null;
 894         switch (id) {
 895         case DIALOG_LOGIN_PROGRESS: {
 896             /// simple progress dialog
 897             ProgressDialog working_dialog = new ProgressDialog(this);
 898             working_dialog.setMessage(getResources().getString(R.string.auth_trying_to_login));
 899             working_dialog.setIndeterminate(true);
 900             working_dialog.setCancelable(true);
 901             working_dialog
 902                     .setOnCancelListener(new DialogInterface.OnCancelListener() {
 903                         @Override
 904                         public void onCancel(DialogInterface dialog) {
 905                             /// TODO study if this is enough
 906                             Log_OC.i(TAG, "Login canceled");
 907                             if (mOperationThread != null) {
 908                                 mOperationThread.interrupt();
 909                                 finish();
 910                             }
 911                         }
 912                     });
 913             dialog = working_dialog;
 914             break;
 915         }
 916         case DIALOG_OAUTH2_LOGIN_PROGRESS: {
 917             ProgressDialog working_dialog = new ProgressDialog(this);
 918             working_dialog.setMessage(String.format("Getting authorization"));
 919             working_dialog.setIndeterminate(true);
 920             working_dialog.setCancelable(true);
 921             working_dialog
 922             .setOnCancelListener(new DialogInterface.OnCancelListener() {
 923                 @Override
 924                 public void onCancel(DialogInterface dialog) {
 925                     Log_OC.i(TAG, "Login canceled");
 926                     finish();
 927                 }
 928             });
 929             dialog = working_dialog;
 930             break;
 931         }
 932         case DIALOG_SSL_VALIDATOR: {
 933             /// TODO start to use new dialog interface, at least for this (it is a FragmentDialog already)
 934             dialog = SslValidatorDialog.newInstance(this, mLastSslUntrustedServerResult, this);
 935             break;
 936         }
 937         case DIALOG_CERT_NOT_SAVED: {
 938             AlertDialog.Builder builder = new AlertDialog.Builder(this);
 939             builder.setMessage(getResources().getString(R.string.ssl_validator_not_saved));
 940             builder.setCancelable(false);
 941             builder.setPositiveButton(R.string.common_ok, new DialogInterface.OnClickListener() {
 942                     @Override
 943                     public void onClick(DialogInterface dialog, int which) {
 944                         dialog.dismiss();
 945                     };
 946                 });
 947             dialog = builder.create();
 948             break;
 949         }
 950         default:
 951             Log_OC.e(TAG, "Incorrect dialog called with id = " + id);
 952         }
 953         return dialog;
 954     }
 955
 956
 957     /**
 958      * Starts and activity to open the 'new account' page in the ownCloud web site
 959      *
 960      * @param view      'Account register' button
 961      */
 962     public void onRegisterClick(View view) {
 963         Intent register = new Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.url_account_register)));
 964         setResult(RESULT_CANCELED);
 965         startActivity(register);
 966     }
 967
 968
 969     /**
 970      * Updates the content and visibility state of the icon and text associated
 971      * to the last check on the ownCloud server.
 972      */
 973     private void updateConnStatus() {
 974         TextView tv = (TextView) findViewById(R.id.server_status_text);
 975
 976         if (mStatusIcon == 0 && mStatusText == 0) {
 977             tv.setVisibility(View.INVISIBLE);
 978         } else {
 979             tv.setText(mStatusText);
 980             tv.setCompoundDrawablesWithIntrinsicBounds(mStatusIcon, 0, 0, 0);
 981             tv.setVisibility(View.VISIBLE);
 982         }
 983     }
 984
 985
 986     /**
 987      * Updates the content and visibility state of the icon and text associated
 988      * to the interactions with the OAuth authorization server.
 989      */
 990     private void updateAuthStatus() {
 991         if (mStatusIcon == 0 && mStatusText == 0) {
 992             mAuthStatusLayout.setVisibility(View.INVISIBLE);
 993         } else {
 994             mAuthStatusLayout.setText(mStatusText);
 995             mAuthStatusLayout.setCompoundDrawablesWithIntrinsicBounds(mStatusIcon, 0, 0, 0);
 996             mAuthStatusLayout.setVisibility(View.VISIBLE);
 997         }
 998     }
 999
1000
1001     /**
1002      * Called when the refresh button in the input field for ownCloud host is clicked.
1003      *
1004      * Performs a new check on the URL in the input field.
1005      *
1006      * @param view      Refresh 'button'
1007      */
1008     public void onRefreshClick(View view) {
1009         onFocusChange(mRefreshButton, false);
1010     }
1011
1012
1013     /**
1014      * Called when the eye icon in the password field is clicked.
1015      *
1016      * Toggles the visibility of the password in the field.
1017      *
1018      * @param view      'View password' 'button'
1019      */
1020     public void onViewPasswordClick(View view) {
1021         int selectionStart = mPasswordInput.getSelectionStart();
1022         int selectionEnd = mPasswordInput.getSelectionEnd();
1023         int input_type = mPasswordInput.getInputType();
1024         if ((input_type & InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD) == InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD) {
1025             input_type = InputType.TYPE_CLASS_TEXT
1026                     | InputType.TYPE_TEXT_VARIATION_PASSWORD;
1027         } else {
1028             input_type = InputType.TYPE_CLASS_TEXT
1029                     | InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD;
1030         }
1031         mPasswordInput.setInputType(input_type);
1032         mPasswordInput.setSelection(selectionStart, selectionEnd);
1033     }
1034
1035
1036     /**
1037      * Called when the checkbox for OAuth authorization is clicked.
1038      *
1039      * Hides or shows the input fields for user & password.
1040      *
1041      * @param view      'View password' 'button'
1042      */
1043     public void onCheckClick(View view) {
1044         CheckBox oAuth2Check = (CheckBox)view;
1045         changeViewByOAuth2Check(oAuth2Check.isChecked());
1046
1047     }
1048
1049     /**
1050      * Changes the visibility of input elements depending upon the kind of authorization
1051      * chosen by the user: basic or OAuth
1052      *
1053      * @param checked       'True' when OAuth is selected.
1054      */
1055     public void changeViewByOAuth2Check(Boolean checked) {
1056
1057         if (checked) {
1058             mOAuthAuthEndpointText.setVisibility(View.VISIBLE);
1059             mOAuthTokenEndpointText.setVisibility(View.VISIBLE);
1060             mUsernameInput.setVisibility(View.GONE);
1061             mPasswordInput.setVisibility(View.GONE);
1062             mViewPasswordButton.setVisibility(View.GONE);
1063         } else {
1064             mOAuthAuthEndpointText.setVisibility(View.GONE);
1065             mOAuthTokenEndpointText.setVisibility(View.GONE);
1066             mUsernameInput.setVisibility(View.VISIBLE);
1067             mPasswordInput.setVisibility(View.VISIBLE);
1068             mViewPasswordButton.setVisibility(View.INVISIBLE);
1069         }
1070
1071     }
1072
1073     /**
1074      * Called from SslValidatorDialog when a new server certificate was correctly saved.
1075      */
1076     public void onSavedCertificate() {
1077         mOperationThread = mOcServerChkOperation.retry(this, mHandler);
1078     }
1079
1080     /**
1081      * Called from SslValidatorDialog when a new server certificate could not be saved
1082      * when the user requested it.
1083      */
1084     @Override
1085     public void onFailedSavingCertificate() {
1086         showDialog(DIALOG_CERT_NOT_SAVED);
1087     }
1088
1089
1090     /**
1091      *  Called when the 'action' button in an IME is pressed ('enter' in software keyboard).
1092      *
1093      *  Used to trigger the authorization check when the user presses 'enter' after writing the password.
1094      */
1095     @Override
1096     public boolean onEditorAction(TextView inputField, int actionId, KeyEvent event) {
1097         if (inputField != null && inputField.equals(mPasswordInput) &&
1098                 actionId == EditorInfo.IME_ACTION_DONE) {
1099             if (mOkButton.isEnabled()) {
1100                 mOkButton.performClick();
1101             }
1102         }
1103         return false;   // always return false to grant that the software keyboard is hidden anyway
1104     }
1105
1106 }