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