com.owncloud.android.authentication.AuthenticatorActivity.java Source code

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Here is the source code for com.owncloud.android.authentication.AuthenticatorActivity.java

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/* ownCloud Android client application
 *   Copyright (C) 2012  Bartek Przybylski
 *   Copyright (C) 2012-2013 ownCloud Inc.
 *
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License version 2,
 *   as published by the Free Software Foundation.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

package com.owncloud.android.authentication;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.params.CoreProtocolPNames;
import org.apache.http.util.EntityUtils;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.accounts.Account;
import android.accounts.AccountManager;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.ContentResolver;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
import android.text.Editable;
import android.text.InputType;
import android.text.TextWatcher;
import android.util.Log;
import android.view.KeyEvent;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnFocusChangeListener;
import android.view.View.OnTouchListener;
import android.view.Window;
import android.view.inputmethod.EditorInfo;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.TextView.OnEditorActionListener;
import android.widget.Toast;

import com.actionbarsherlock.app.SherlockDialogFragment;
import com.owncloud.android.Log_OC;
import com.owncloud.android.R;
import com.owncloud.android.authentication.SsoWebViewClient.SsoWebViewClientListener;
import com.owncloud.android.network.OwnCloudClientUtils;
import com.owncloud.android.operations.ExistenceCheckOperation;
import com.owncloud.android.operations.OAuth2GetAccessToken;
import com.owncloud.android.operations.OnRemoteOperationListener;
import com.owncloud.android.operations.OwnCloudServerCheckOperation;
import com.owncloud.android.operations.RemoteOperation;
import com.owncloud.android.operations.RemoteOperationResult;
import com.owncloud.android.operations.RemoteOperationResult.ResultCode;
import com.owncloud.android.ui.dialog.SamlWebViewDialog;
import com.owncloud.android.ui.dialog.SslValidatorDialog;
import com.owncloud.android.ui.dialog.SslValidatorDialog.OnSslValidatorListener;
import com.owncloud.android.utils.OwnCloudVersion;

import eu.alefzero.webdav.WebdavClient;

/**
 * This Activity is used to add an ownCloud account to the App
 * 
 * @author Bartek Przybylski
 * @author David A. Velasco
 */
public class AuthenticatorActivity extends AccountAuthenticatorActivity
        implements OnRemoteOperationListener, OnSslValidatorListener, OnFocusChangeListener, OnEditorActionListener,
        SsoWebViewClientListener, OnItemSelectedListener {

    private static final String TAG = AuthenticatorActivity.class.getSimpleName();

    public static final String EXTRA_ACCOUNT = "ACCOUNT";
    public static final String EXTRA_USER_NAME = "USER_NAME";
    public static final String EXTRA_HOST_NAME = "HOST_NAME";
    public static final String EXTRA_ACTION = "ACTION";
    public static final String EXTRA_ENFORCED_UPDATE = "ENFORCE_UPDATE";

    private static final String KEY_AUTH_MESSAGE_VISIBILITY = "AUTH_MESSAGE_VISIBILITY";
    private static final String KEY_AUTH_MESSAGE_TEXT = "AUTH_MESSAGE_TEXT";
    private static final String KEY_HOST_URL_TEXT = "HOST_URL_TEXT";
    private static final String KEY_OC_VERSION = "OC_VERSION";
    private static final String KEY_ACCOUNT = "ACCOUNT";
    private static final String KEY_SERVER_VALID = "SERVER_VALID";
    private static final String KEY_SERVER_CHECKED = "SERVER_CHECKED";
    private static final String KEY_SERVER_CHECK_IN_PROGRESS = "SERVER_CHECK_IN_PROGRESS";
    private static final String KEY_SERVER_STATUS_TEXT = "SERVER_STATUS_TEXT";
    private static final String KEY_SERVER_STATUS_ICON = "SERVER_STATUS_ICON";
    private static final String KEY_IS_SSL_CONN = "IS_SSL_CONN";
    private static final String KEY_PASSWORD_VISIBLE = "PASSWORD_VISIBLE";
    private static final String KEY_AUTH_STATUS_TEXT = "AUTH_STATUS_TEXT";
    private static final String KEY_AUTH_STATUS_ICON = "AUTH_STATUS_ICON";
    private static final String KEY_REFRESH_BUTTON_ENABLED = "KEY_REFRESH_BUTTON_ENABLED";

    private static final String KEY_OC_USERNAME_EQUALS = "oc_username=";
    private static final String REGISTER_USER_ALREADY_EXISTS = "USER_ALREADY_EXISTS";
    private static final String REGISTER_USER_SUCCESS = "ACCOUNT_CREATED";
    private static final String AUTH_ON = "on";
    private static final String AUTH_OFF = "off";
    private static final String AUTH_OPTIONAL = "optional";

    private static final int DIALOG_LOGIN_PROGRESS = 0;
    private static final int DIALOG_SSL_VALIDATOR = 1;
    private static final int DIALOG_CERT_NOT_SAVED = 2;
    private static final int DIALOG_OAUTH2_LOGIN_PROGRESS = 3;

    public static final byte ACTION_CREATE = 0;
    public static final byte ACTION_UPDATE_TOKEN = 1;

    private static final String TAG_SAML_DIALOG = "samlWebViewDialog";

    private String mHostBaseUrl;
    private OwnCloudVersion mDiscoveredVersion;

    private String mAuthMessageText;
    private int mAuthMessageVisibility, mServerStatusText, mServerStatusIcon;
    private boolean mServerIsChecked, mServerIsValid, mIsSslConn;
    private int mAuthStatusText, mAuthStatusIcon;
    private TextView mAuthStatusLayout;

    private final Handler mHandler = new Handler();
    private Thread mOperationThread;
    private OwnCloudServerCheckOperation mOcServerChkOperation;
    private ExistenceCheckOperation mAuthCheckOperation;
    private RemoteOperationResult mLastSslUntrustedServerResult;

    private Uri mNewCapturedUriFromOAuth2Redirection;

    private AccountManager mAccountMgr;
    private boolean mJustCreated;
    private byte mAction;
    private Account mAccount;

    private TextView mAuthMessage;

    private EditText mHostUrlInput;
    private boolean mHostUrlInputEnabled;
    private View mRefreshButton;

    private String mAuthTokenType;

    private EditText mUsernameInput;
    private EditText mPasswordInput;
    private EditText mPasswordInput2;
    private CheckBox mOAuth2Check;

    private TextView mOAuthAuthEndpointText;
    private TextView mOAuthTokenEndpointText;
    private Spinner locationSpinner;
    private Object location;
    private SamlWebViewDialog mSamlDialog;

    private View mOkButton;
    private Button mRegButton;

    private String mAuthToken;

    private boolean mResumed; // Control if activity is resumed

    /**
     * {@inheritDoc}
     * 
     * IMPORTANT ENTRY POINT 1: activity is shown to the user
     */
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().requestFeature(Window.FEATURE_NO_TITLE);

        setContentView(R.layout.account_setup);
        mAuthMessage = (TextView) findViewById(R.id.auth_message);
        mHostUrlInput = (EditText) findViewById(R.id.hostUrlInput);
        mHostUrlInput.setText(getString(R.string.server_url)); // valid although
                                                               // R.string.server_url
                                                               // is an empty
                                                               // string
        mUsernameInput = (EditText) findViewById(R.id.account_username);
        mPasswordInput = (EditText) findViewById(R.id.account_password);
        mPasswordInput2 = (EditText) findViewById(R.id.account_password2);
        mOAuthAuthEndpointText = (TextView) findViewById(R.id.oAuthEntryPoint_1);
        mOAuthTokenEndpointText = (TextView) findViewById(R.id.oAuthEntryPoint_2);
        mOAuth2Check = (CheckBox) findViewById(R.id.oauth_onOff_check);
        mOkButton = findViewById(R.id.buttonOK);
        mAuthStatusLayout = (TextView) findViewById(R.id.auth_status_text);

        // / set Host Url Input Enabled
        mHostUrlInputEnabled = getResources().getBoolean(R.bool.show_server_url_input);
        locationSpinner = (Spinner) findViewById(R.id.spinner1);

        // / complete label for 'register account' button
        Button b = (Button) findViewById(R.id.account_register);
        if (b != null) {
            b.setText(String.format(getString(R.string.auth_register), getString(R.string.app_name)));
        }

        // / initialization
        mAccountMgr = AccountManager.get(this);
        mNewCapturedUriFromOAuth2Redirection = null;
        mAction = getIntent().getByteExtra(EXTRA_ACTION, ACTION_CREATE);
        mAccount = null;
        mHostBaseUrl = "";
        location = " ";//locationSpinner.getSelectedItem();
        locationSpinner.setOnItemSelectedListener(this);
        boolean refreshButtonEnabled = false;

        // URL input configuration applied
        if (!mHostUrlInputEnabled) {
            findViewById(R.id.hostUrlFrame).setVisibility(View.GONE);
            mRefreshButton = findViewById(R.id.centeredRefreshButton);

        } else {
            mRefreshButton = findViewById(R.id.embeddedRefreshButton);
        }

        if (savedInstanceState == null) {
            mResumed = false;
            // / connection state and info
            mAuthMessageVisibility = View.GONE;
            mServerStatusText = mServerStatusIcon = 0;
            mServerIsValid = false;
            mServerIsChecked = false;
            mIsSslConn = false;
            mAuthStatusText = mAuthStatusIcon = 0;

            // / retrieve extras from intent
            mAccount = getIntent().getExtras().getParcelable(EXTRA_ACCOUNT);

            if (mAccount != null) {
                String ocVersion = mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_OC_VERSION);
                Log.d("!!!!!!!!!!!!!!!!!!!!!!!!! ", mAccount.name);
                if (ocVersion != null) {
                    mDiscoveredVersion = new OwnCloudVersion(ocVersion);
                }
                mHostBaseUrl = normalizeUrl(
                        mAccountMgr.getUserData(mAccount, AccountAuthenticator.KEY_OC_BASE_URL));
                mHostUrlInput.setText(mHostBaseUrl);

                String userName = mAccount.name.substring(0, mAccount.name.lastIndexOf('@'));
                Log.d("!!!!!!!!!!!!!!!!!!!!!!!!!4234 ", userName);
                mUsernameInput.setText(userName);
            }
            initAuthorizationMethod(); // checks intent and setup.xml to
                                       // determine mCurrentAuthorizationMethod
            mJustCreated = true;

            if (mAction == ACTION_UPDATE_TOKEN || !mHostUrlInputEnabled) {
                checkOcServer();
            }

        } else {
            mResumed = true;
            // / connection state and info
            mAuthMessageVisibility = savedInstanceState.getInt(KEY_AUTH_MESSAGE_VISIBILITY);
            mAuthMessageText = savedInstanceState.getString(KEY_AUTH_MESSAGE_TEXT);
            mServerIsValid = savedInstanceState.getBoolean(KEY_SERVER_VALID);
            mServerIsChecked = savedInstanceState.getBoolean(KEY_SERVER_CHECKED);
            mServerStatusText = savedInstanceState.getInt(KEY_SERVER_STATUS_TEXT);
            mServerStatusIcon = savedInstanceState.getInt(KEY_SERVER_STATUS_ICON);
            mIsSslConn = savedInstanceState.getBoolean(KEY_IS_SSL_CONN);
            mAuthStatusText = savedInstanceState.getInt(KEY_AUTH_STATUS_TEXT);
            mAuthStatusIcon = savedInstanceState.getInt(KEY_AUTH_STATUS_ICON);
            if (savedInstanceState.getBoolean(KEY_PASSWORD_VISIBLE, false)) {
                showPassword();
            }

            // / server data
            String ocVersion = savedInstanceState.getString(KEY_OC_VERSION);
            if (ocVersion != null) {
                mDiscoveredVersion = new OwnCloudVersion(ocVersion);
            }
            mHostBaseUrl = savedInstanceState.getString(KEY_HOST_URL_TEXT);

            // account data, if updating
            mAccount = savedInstanceState.getParcelable(KEY_ACCOUNT);
            // Log.d("////////////////// ",mAccount.name);
            mAuthTokenType = savedInstanceState.getString(AccountAuthenticator.KEY_AUTH_TOKEN_TYPE);
            if (mAuthTokenType == null) {
                mAuthTokenType = AccountAuthenticator.AUTH_TOKEN_TYPE_PASSWORD;

            }

            // check if server check was interrupted by a configuration change
            if (savedInstanceState.getBoolean(KEY_SERVER_CHECK_IN_PROGRESS, false)) {
                checkOcServer();
            }

            // refresh button enabled
            refreshButtonEnabled = savedInstanceState.getBoolean(KEY_REFRESH_BUTTON_ENABLED);

        }

        if (mAuthMessageVisibility == View.VISIBLE) {
            showAuthMessage(mAuthMessageText);
        } else {
            hideAuthMessage();
        }
        adaptViewAccordingToAuthenticationMethod();
        showServerStatus();
        showAuthStatus();

        if (mAction == ACTION_UPDATE_TOKEN) {
            // / lock things that should not change
            mHostUrlInput.setEnabled(false);
            mHostUrlInput.setFocusable(false);
            mUsernameInput.setEnabled(false);
            mUsernameInput.setFocusable(false);
            mOAuth2Check.setVisibility(View.GONE);
        }

        // if (mServerIsChecked && !mServerIsValid && mRefreshButtonEnabled)
        // showRefreshButton();
        if (mServerIsChecked && !mServerIsValid && refreshButtonEnabled)
            showRefreshButton();
        mOkButton.setEnabled(mServerIsValid); // state not automatically
                                              // recovered in configuration
                                              // changes

        if (AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE.equals(mAuthTokenType)
                || !AUTH_OPTIONAL.equals(getString(R.string.auth_method_oauth2))) {
            mOAuth2Check.setVisibility(View.GONE);
        }

        mPasswordInput.setText(""); // clean password to avoid social hacking
                                    // (disadvantage: password in removed if the
                                    // device is turned aside)

        // / bind view elements to listeners and other friends
        mHostUrlInput.setOnFocusChangeListener(this);
        mHostUrlInput.setImeOptions(EditorInfo.IME_ACTION_NEXT);
        mHostUrlInput.setOnEditorActionListener(this);
        mHostUrlInput.addTextChangedListener(new TextWatcher() {

            @Override
            public void afterTextChanged(Editable s) {
                if (!mHostBaseUrl.equals(normalizeUrl(mHostUrlInput.getText().toString()))) {
                    mOkButton.setEnabled(false);
                }
            }

            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                if (!mResumed) {
                    mAuthStatusIcon = 0;
                    mAuthStatusText = 0;
                    showAuthStatus();
                }
                mResumed = false;
            }
        });

        mPasswordInput.setOnFocusChangeListener(this);
        mPasswordInput.setImeOptions(EditorInfo.IME_ACTION_DONE);
        mPasswordInput.setOnEditorActionListener(this);
        mPasswordInput.setOnTouchListener(new RightDrawableOnTouchListener() {
            @Override
            public boolean onDrawableTouch(final MotionEvent event) {
                if (event.getAction() == MotionEvent.ACTION_UP) {
                    AuthenticatorActivity.this.onViewPasswordClick();
                }
                return true;
            }
        });

        findViewById(R.id.scroll).setOnTouchListener(new OnTouchListener() {
            @Override
            public boolean onTouch(View view, MotionEvent event) {
                if (event.getAction() == MotionEvent.ACTION_DOWN) {
                    if (AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE.equals(mAuthTokenType)
                            && mHostUrlInput.hasFocus()) {
                        checkOcServer();
                    }
                }
                return false;
            }
        });
    }

    private void initAuthorizationMethod() {
        boolean oAuthRequired = false;
        boolean samlWebSsoRequired = false;

        mAuthTokenType = getIntent().getExtras().getString(AccountAuthenticator.KEY_AUTH_TOKEN_TYPE);
        mAccount = getIntent().getExtras().getParcelable(EXTRA_ACCOUNT);
        // TODO could be a good moment to validate the received token type, if
        // not null

        if (mAuthTokenType == null) {
            if (mAccount != null) {
                // / same authentication method than the one used to create the
                // account to update
                oAuthRequired = (mAccountMgr.getUserData(mAccount,
                        AccountAuthenticator.KEY_SUPPORTS_OAUTH2) != null);
                samlWebSsoRequired = (mAccountMgr.getUserData(mAccount,
                        AccountAuthenticator.KEY_SUPPORTS_SAML_WEB_SSO) != null);

            } else {
                // / use the one set in setup.xml
                oAuthRequired = AUTH_ON.equals(getString(R.string.auth_method_oauth2));
                samlWebSsoRequired = AUTH_ON.equals(getString(R.string.auth_method_saml_web_sso));
            }
            if (oAuthRequired) {
                mAuthTokenType = AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN;
            } else if (samlWebSsoRequired) {
                mAuthTokenType = AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE;
            } else {
                mAuthTokenType = AccountAuthenticator.AUTH_TOKEN_TYPE_PASSWORD;
            }
        }

        if (mAccount != null) {
            String userName = mAccount.name.substring(0, mAccount.name.lastIndexOf('@'));
            Log.d("mAccount ", mAccount.name);
            mUsernameInput.setText(userName);
        }

        mOAuth2Check.setChecked(AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN.equals(mAuthTokenType));

    }

    /**
     * Saves relevant state before {@link #onPause()}
     * 
     * Do NOT save {@link #mNewCapturedUriFromOAuth2Redirection}; it keeps a
     * temporal flag, intended to defer the processing of the redirection caught
     * in {@link #onNewIntent(Intent)} until {@link #onResume()}
     * 
     * See {@link #loadSavedInstanceState(Bundle)}
     */
    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);

        // / connection state and info
        outState.putInt(KEY_AUTH_MESSAGE_VISIBILITY, mAuthMessage.getVisibility());
        outState.putString(KEY_AUTH_MESSAGE_TEXT, mAuthMessage.getText().toString());
        outState.putInt(KEY_SERVER_STATUS_TEXT, mServerStatusText);
        outState.putInt(KEY_SERVER_STATUS_ICON, mServerStatusIcon);
        outState.putBoolean(KEY_SERVER_VALID, mServerIsValid);
        outState.putBoolean(KEY_SERVER_CHECKED, mServerIsChecked);
        outState.putBoolean(KEY_SERVER_CHECK_IN_PROGRESS, (!mServerIsValid && mOcServerChkOperation != null));
        outState.putBoolean(KEY_IS_SSL_CONN, mIsSslConn);
        outState.putBoolean(KEY_PASSWORD_VISIBLE, isPasswordVisible());
        outState.putInt(KEY_AUTH_STATUS_ICON, mAuthStatusIcon);
        outState.putInt(KEY_AUTH_STATUS_TEXT, mAuthStatusText);

        // / server data
        if (mDiscoveredVersion != null) {
            outState.putString(KEY_OC_VERSION, mDiscoveredVersion.toString());
        }
        outState.putString(KEY_HOST_URL_TEXT, mHostBaseUrl);

        // / account data, if updating
        if (mAccount != null) {
            outState.putParcelable(KEY_ACCOUNT, mAccount);
        }
        outState.putString(AccountAuthenticator.KEY_AUTH_TOKEN_TYPE, mAuthTokenType);

        // refresh button enabled
        outState.putBoolean(KEY_REFRESH_BUTTON_ENABLED, (mRefreshButton.getVisibility() == View.VISIBLE));

    }

    /**
     * The redirection triggered by the OAuth authentication server as response
     * to the GET AUTHORIZATION request is caught here.
     * 
     * To make this possible, this activity needs to be qualified with
     * android:launchMode = "singleTask" in the AndroidManifest.xml file.
     */
    @Override
    protected void onNewIntent(Intent intent) {
        Log_OC.d(TAG, "onNewIntent()");
        Uri data = intent.getData();
        if (data != null && data.toString().startsWith(getString(R.string.oauth2_redirect_uri))) {
            mNewCapturedUriFromOAuth2Redirection = data;
        }
    }

    /**
     * The redirection triggered by the OAuth authentication server as response
     * to the GET AUTHORIZATION, and deferred in {@link #onNewIntent(Intent)},
     * is processed here.
     */
    @Override
    protected void onResume() {
        super.onResume();
        if (mAction == ACTION_UPDATE_TOKEN && mJustCreated
                && getIntent().getBooleanExtra(EXTRA_ENFORCED_UPDATE, false)) {
            if (AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN.equals(mAuthTokenType)) {
                // Toast.makeText(this, R.string.auth_expired_oauth_token_toast,
                // Toast.LENGTH_LONG).show();
                showAuthMessage(getString(R.string.auth_expired_oauth_token_toast));
            } else if (AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE.equals(mAuthTokenType)) {
                // Toast.makeText(this,
                // R.string.auth_expired_saml_sso_token_toast,
                // Toast.LENGTH_LONG).show();
                showAuthMessage(getString(R.string.auth_expired_saml_sso_token_toast));
            } else {
                // Toast.makeText(this, R.string.auth_expired_basic_auth_toast,
                // Toast.LENGTH_LONG).show();
                showAuthMessage(getString(R.string.auth_expired_basic_auth_toast));
            }
        }

        if (mNewCapturedUriFromOAuth2Redirection != null) {
            getOAuth2AccessTokenFromCapturedRedirection();
        }

        mJustCreated = false;

    }

    /**
     * Parses the redirection with the response to the GET AUTHORIZATION request
     * to the oAuth server and requests for the access token (GET ACCESS TOKEN)
     */
    private void getOAuth2AccessTokenFromCapturedRedirection() {
        // / Parse data from OAuth redirection
        String queryParameters = mNewCapturedUriFromOAuth2Redirection.getQuery();
        mNewCapturedUriFromOAuth2Redirection = null;

        // / Showing the dialog with instructions for the user.
        showDialog(DIALOG_OAUTH2_LOGIN_PROGRESS);

        // / GET ACCESS TOKEN to the oAuth server
        RemoteOperation operation = new OAuth2GetAccessToken(getString(R.string.oauth2_client_id),
                getString(R.string.oauth2_redirect_uri), getString(R.string.oauth2_grant_type), queryParameters);
        // WebdavClient client =
        // OwnCloudClientUtils.createOwnCloudClient(Uri.parse(getString(R.string.oauth2_url_endpoint_access)),
        // getApplicationContext());
        WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(
                Uri.parse(mOAuthTokenEndpointText.getText().toString().trim()), getApplicationContext(), true);
        operation.execute(client, this, mHandler);
    }

    /**
     * Handles the change of focus on the text inputs for the server URL and the
     * password
     */
    public void onFocusChange(View view, boolean hasFocus) {
        if (view.getId() == R.id.hostUrlInput) {
            if (!hasFocus) {
                onUrlInputFocusLost((TextView) view);
            } else {
                hideRefreshButton();
            }

        } else if (view.getId() == R.id.account_password) {
            onPasswordFocusChanged((TextView) view, hasFocus);
        }
    }

    /**
     * Handles changes in focus on the text input for the server URL.
     * 
     * IMPORTANT ENTRY POINT 2: When (!hasFocus), user wrote the server URL and
     * changed to other field. The operation to check the existence of the
     * server in the entered URL is started.
     * 
     * When hasFocus: user 'comes back' to write again the server URL.
     * 
     * @param hostInput TextView with the URL input field receiving the change
     *            of focus.
     */
    private void onUrlInputFocusLost(TextView hostInput) {
        if (!mHostBaseUrl.equals(normalizeUrl(mHostUrlInput.getText().toString()))) {
            checkOcServer();
        } else {
            mOkButton.setEnabled(mServerIsValid);
            if (!mServerIsValid) {
                showRefreshButton();
            }
        }
    }

    public void callonRefresh(String s1) {
        checkOcServer(s1);
    }

    private void checkOcServer(String... urlServer) {
        String uri;
        if (urlServer.length > 0) {
            uri = urlServer[0];
        } else {
            uri = trimUrlWebdav(mHostUrlInput.getText().toString().trim());
        }
        if (!mHostUrlInputEnabled) {
            uri = getString(R.string.server_url);
        }

        mServerIsValid = false;
        mServerIsChecked = false;
        mOkButton.setEnabled(false);
        mDiscoveredVersion = null;
        hideRefreshButton();
        if (uri.length() != 0) {
            mServerStatusText = R.string.auth_testing_connection;
            mServerStatusIcon = R.drawable.progress_small;
            showServerStatus();
            mOcServerChkOperation = new OwnCloudServerCheckOperation(uri, this);
            WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(uri), this, true);
            mOperationThread = mOcServerChkOperation.execute(client, this, mHandler);
        } else {
            mServerStatusText = 0;
            mServerStatusIcon = 0;
            showServerStatus();
        }
    }

    /**
     * Handles changes in focus on the text input for the password (basic
     * authorization).
     * 
     * When (hasFocus), the button to toggle password visibility is shown.
     * 
     * When (!hasFocus), the button is made invisible and the password is
     * hidden.
     * 
     * @param passwordInput TextView with the password input field receiving the
     *            change of focus.
     * @param hasFocus 'True' if focus is received, 'false' if is lost
     */
    private void onPasswordFocusChanged(TextView passwordInput, boolean hasFocus) {
        if (hasFocus) {
            showViewPasswordButton();
        } else {
            hidePassword();
            hidePasswordButton();
        }
    }

    private void showViewPasswordButton() {
        // int drawable = android.R.drawable.ic_menu_view;
        int drawable = R.drawable.ic_view;
        if (isPasswordVisible()) {
            // drawable = android.R.drawable.ic_secure;
            drawable = R.drawable.ic_hide;
        }
        mPasswordInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, drawable, 0);
    }

    private boolean isPasswordVisible() {
        return ((mPasswordInput.getInputType()
                & InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD) == InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
    }

    private void hidePasswordButton() {
        mPasswordInput.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
    }

    private void showPassword() {
        mPasswordInput.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);
        showViewPasswordButton();
    }

    private void hidePassword() {
        mPasswordInput.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
        showViewPasswordButton();
    }

    /**
     * Cancels the authenticator activity
     * 
     * IMPORTANT ENTRY POINT 3: Never underestimate the importance of
     * cancellation
     * 
     * This method is bound in the layout/acceoun_setup.xml resource file.
     * 
     * @param view Cancel button
     */
    public void onCancelClick(View view) {
        setResult(RESULT_CANCELED); // TODO review how is this related to
                                    // AccountAuthenticator (debugging)
        finish();
    }

    /**
     * Checks the credentials of the user in the root of the ownCloud server
     * before creating a new local account.
     * 
     * For basic authorization, a check of existence of the root folder is
     * performed.
     * 
     * For OAuth, starts the flow to get an access token; the credentials test
     * is postponed until it is available.
     * 
     * IMPORTANT ENTRY POINT 4
     * 
     * @param view OK button
     */
    public void onOkClick(View view) {
        // this check should be unnecessary
        if (mDiscoveredVersion == null || !mDiscoveredVersion.isVersionValid() || mHostBaseUrl == null
                || mHostBaseUrl.length() == 0) {
            mServerStatusIcon = R.drawable.common_error;
            mServerStatusText = R.string.auth_wtf_reenter_URL;
            showServerStatus();
            mOkButton.setEnabled(false);
            Log_OC.wtf(TAG, "The user was allowed to click 'connect' to an unchecked server!!");
            return;
        }

        if (AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN.equals(mAuthTokenType)) {
            startOauthorization();
        } else if (AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE.equals(mAuthTokenType)) {
            startSamlBasedFederatedSingleSignOnAuthorization();
        } else {
            checkBasicAuthorization();
        }
    }

    /**
     * Tests the credentials entered by the user performing a check of existence
     * on the root folder of the ownCloud server.
     */
    private void checkBasicAuthorization() {
        // / get the path to the root folder through WebDAV from the version
        // server
        String webdav_path = AccountUtils.getWebdavPath(mDiscoveredVersion, mAuthTokenType);

        // / get basic credentials entered by user
        String username = mUsernameInput.getText().toString();
        username = username + "@" + location;
        String password = mPasswordInput.getText().toString();

        // / be gentle with the user
        showDialog(DIALOG_LOGIN_PROGRESS);

        // / test credentials accessing the root folder
        mAuthCheckOperation = new ExistenceCheckOperation("", this, false);
        WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mHostBaseUrl + webdav_path), this,
                true);
        client.setBasicCredentials(username, password);
        Log.d("checking again ", username);
        mOperationThread = mAuthCheckOperation.execute(client, this, mHandler);
    }

    /**
     * Starts the OAuth 'grant type' flow to get an access token, with a GET
     * AUTHORIZATION request to the BUILT-IN authorization server.
     */
    private void startOauthorization() {
        // be gentle with the user
        mAuthStatusIcon = R.drawable.progress_small;
        mAuthStatusText = R.string.oauth_login_connection;
        showAuthStatus();

        // GET AUTHORIZATION request
        // Uri uri = Uri.parse(getString(R.string.oauth2_url_endpoint_auth));
        Uri uri = Uri.parse(mOAuthAuthEndpointText.getText().toString().trim());
        Uri.Builder uriBuilder = uri.buildUpon();
        uriBuilder.appendQueryParameter(OAuth2Constants.KEY_RESPONSE_TYPE,
                getString(R.string.oauth2_response_type));
        uriBuilder.appendQueryParameter(OAuth2Constants.KEY_REDIRECT_URI, getString(R.string.oauth2_redirect_uri));
        uriBuilder.appendQueryParameter(OAuth2Constants.KEY_CLIENT_ID, getString(R.string.oauth2_client_id));
        uriBuilder.appendQueryParameter(OAuth2Constants.KEY_SCOPE, getString(R.string.oauth2_scope));
        // uriBuilder.appendQueryParameter(OAuth2Constants.KEY_STATE,
        // whateverwewant);
        uri = uriBuilder.build();
        Log_OC.d(TAG, "Starting browser to view " + uri.toString());
        Intent i = new Intent(Intent.ACTION_VIEW, uri);
        startActivity(i);
    }

    /**
     * Starts the Web Single Sign On flow to get access to the root folder in
     * the server.
     */
    private void startSamlBasedFederatedSingleSignOnAuthorization() {
        // be gentle with the user
        mAuthStatusIcon = R.drawable.progress_small;
        mAuthStatusText = R.string.auth_connecting_auth_server;
        showAuthStatus();
        showDialog(DIALOG_LOGIN_PROGRESS);

        // / get the path to the root folder through WebDAV from the version
        // server
        String webdav_path = AccountUtils.getWebdavPath(mDiscoveredVersion, mAuthTokenType);

        // / test credentials accessing the root folder
        mAuthCheckOperation = new ExistenceCheckOperation("", this, false);
        WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mHostBaseUrl + webdav_path), this,
                false);
        mOperationThread = mAuthCheckOperation.execute(client, this, mHandler);

    }

    /**
     * Callback method invoked when a RemoteOperation executed by this Activity
     * finishes.
     * 
     * Dispatches the operation flow to the right method.
     */
    @Override
    public void onRemoteOperationFinish(RemoteOperation operation, RemoteOperationResult result) {

        if (operation instanceof OwnCloudServerCheckOperation) {
            onOcServerCheckFinish((OwnCloudServerCheckOperation) operation, result);

        } else if (operation instanceof OAuth2GetAccessToken) {
            onGetOAuthAccessTokenFinish((OAuth2GetAccessToken) operation, result);

        } else if (operation instanceof ExistenceCheckOperation) {
            if (AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE.equals(mAuthTokenType)) {
                onSamlBasedFederatedSingleSignOnAuthorizationStart(operation, result);

            } else {
                onAuthorizationCheckFinish((ExistenceCheckOperation) operation, result);
            }
        }
    }

    private void onSamlBasedFederatedSingleSignOnAuthorizationStart(RemoteOperation operation,
            RemoteOperationResult result) {
        try {
            dismissDialog(DIALOG_LOGIN_PROGRESS);
        } catch (IllegalArgumentException e) {
            // NOTHING TO DO ; can't find out what situation that leads to the
            // exception in this code, but user logs signal that it happens
        }

        // if (result.isTemporalRedirection() && result.isIdPRedirection()) {
        if (result.isIdPRedirection()) {
            String url = result.getRedirectedLocation();
            String targetUrl = mHostBaseUrl + AccountUtils.getWebdavPath(mDiscoveredVersion, mAuthTokenType);

            // Show dialog
            mSamlDialog = SamlWebViewDialog.newInstance(url, targetUrl);
            mSamlDialog.show(getSupportFragmentManager(), TAG_SAML_DIALOG);

            mAuthStatusIcon = 0;
            mAuthStatusText = 0;

        } else {
            mAuthStatusIcon = R.drawable.common_error;
            mAuthStatusText = R.string.auth_unsupported_auth_method;

        }
        showAuthStatus();
    }

    /**
     * Processes the result of the server check performed when the user finishes
     * the enter of the server URL.
     * 
     * @param operation Server check performed.
     * @param result Result of the check.
     */
    private void onOcServerCheckFinish(OwnCloudServerCheckOperation operation, RemoteOperationResult result) {
        if (operation.equals(mOcServerChkOperation)) {
            // / save result state
            mServerIsChecked = true;
            mServerIsValid = result.isSuccess();
            mIsSslConn = (result.getCode() == ResultCode.OK_SSL);
            mOcServerChkOperation = null;

            // / update status icon and text
            if (mServerIsValid) {
                hideRefreshButton();
            } else {
                showRefreshButton();
            }
            updateServerStatusIconAndText(result);
            showServerStatus();

            // / very special case (TODO: move to a common place for all the
            // remote operations)
            if (result.getCode() == ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED) {
                mLastSslUntrustedServerResult = result;
                showDialog(DIALOG_SSL_VALIDATOR);
            }

            // / retrieve discovered version and normalize server URL
            mDiscoveredVersion = operation.getDiscoveredVersion();
            mHostBaseUrl = normalizeUrl(mHostUrlInput.getText().toString());

            // / allow or not the user try to access the server
            mOkButton.setEnabled(mServerIsValid);

        } // else nothing ; only the last check operation is considered;
          // multiple can be triggered if the user amends a URL before a previous
          // check can be triggered
    }

    private String normalizeUrl(String url) {
        if (url != null && url.length() > 0) {
            url = url.trim();
            if (!url.toLowerCase().startsWith("http://") && !url.toLowerCase().startsWith("https://")) {
                if (mIsSslConn) {
                    url = "https://" + url;
                } else {
                    url = "http://" + url;
                }
            }

            // OC-208: Add suffix remote.php/webdav to normalize (OC-34)
            url = trimUrlWebdav(url);

            if (url.endsWith("/")) {
                url = url.substring(0, url.length() - 1);
            }

        }
        return (url != null ? url : "");
    }

    private String trimUrlWebdav(String url) {
        if (url.toLowerCase().endsWith(AccountUtils.WEBDAV_PATH_4_0)) {
            url = url.substring(0, url.length() - AccountUtils.WEBDAV_PATH_4_0.length());
        } else if (url.toLowerCase().endsWith(AccountUtils.WEBDAV_PATH_2_0)) {
            url = url.substring(0, url.length() - AccountUtils.WEBDAV_PATH_2_0.length());
        } else if (url.toLowerCase().endsWith(AccountUtils.WEBDAV_PATH_1_2)) {
            url = url.substring(0, url.length() - AccountUtils.WEBDAV_PATH_1_2.length());
        }
        return (url != null ? url : "");
    }

    /**
     * Chooses the right icon and text to show to the user for the received
     * operation result.
     * 
     * @param result Result of a remote operation performed in this activity
     */
    private void updateServerStatusIconAndText(RemoteOperationResult result) {
        mServerStatusIcon = R.drawable.common_error; // the most common case in
                                                     // the switch below

        switch (result.getCode()) {
        case OK_SSL:
            mServerStatusIcon = android.R.drawable.ic_secure;
            mServerStatusText = R.string.auth_secure_connection;
            break;

        case OK_NO_SSL:
        case OK:
            if (mHostUrlInput.getText().toString().trim().toLowerCase().startsWith("http://")) {
                mServerStatusText = R.string.auth_connection_established;
                mServerStatusIcon = R.drawable.ic_ok;
            } else {
                mServerStatusText = R.string.auth_nossl_plain_ok_title;
                mServerStatusIcon = android.R.drawable.ic_partial_secure;
            }
            break;

        case NO_NETWORK_CONNECTION:
            mServerStatusIcon = R.drawable.no_network;
            mServerStatusText = R.string.auth_no_net_conn_title;
            break;

        case SSL_RECOVERABLE_PEER_UNVERIFIED:
            mServerStatusText = R.string.auth_ssl_unverified_server_title;
            break;
        case BAD_OC_VERSION:
            mServerStatusText = R.string.auth_bad_oc_version_title;
            break;
        case WRONG_CONNECTION:
            mServerStatusText = R.string.auth_wrong_connection_title;
            break;
        case TIMEOUT:
            mServerStatusText = R.string.auth_timeout_title;
            break;
        case INCORRECT_ADDRESS:
            mServerStatusText = R.string.auth_incorrect_address_title;
            break;
        case SSL_ERROR:
            mServerStatusText = R.string.auth_ssl_general_error_title;
            break;
        case UNAUTHORIZED:
            mServerStatusText = R.string.auth_unauthorized;
            break;
        case HOST_NOT_AVAILABLE:
            mServerStatusText = R.string.auth_unknown_host_title;
            break;
        case INSTANCE_NOT_CONFIGURED:
            mServerStatusText = R.string.auth_not_configured_title;
            break;
        case FILE_NOT_FOUND:
            mServerStatusText = R.string.auth_incorrect_path_title;
            break;
        case OAUTH2_ERROR:
            mServerStatusText = R.string.auth_oauth_error;
            break;
        case OAUTH2_ERROR_ACCESS_DENIED:
            mServerStatusText = R.string.auth_oauth_error_access_denied;
            break;
        case UNHANDLED_HTTP_CODE:
        case UNKNOWN_ERROR:
            mServerStatusText = R.string.auth_unknown_error_title;
            break;
        default:
            mServerStatusText = 0;
            mServerStatusIcon = 0;
        }
    }

    /**
     * Chooses the right icon and text to show to the user for the received
     * operation result.
     * 
     * @param result Result of a remote operation performed in this activity
     */
    private void updateAuthStatusIconAndText(RemoteOperationResult result) {
        mAuthStatusIcon = R.drawable.common_error; // the most common case in
                                                   // the switch below

        switch (result.getCode()) {
        case OK_SSL:
            mAuthStatusIcon = android.R.drawable.ic_secure;
            mAuthStatusText = R.string.auth_secure_connection;
            break;

        case OK_NO_SSL:
        case OK:
            if (mHostUrlInput.getText().toString().trim().toLowerCase().startsWith("http://")) {
                mAuthStatusText = R.string.auth_connection_established;
                mAuthStatusIcon = R.drawable.ic_ok;
            } else {
                mAuthStatusText = R.string.auth_nossl_plain_ok_title;
                mAuthStatusIcon = android.R.drawable.ic_partial_secure;
            }
            break;

        case NO_NETWORK_CONNECTION:
            mAuthStatusIcon = R.drawable.no_network;
            mAuthStatusText = R.string.auth_no_net_conn_title;
            break;

        case SSL_RECOVERABLE_PEER_UNVERIFIED:
            mAuthStatusText = R.string.auth_ssl_unverified_server_title;
            break;
        case BAD_OC_VERSION:
            mAuthStatusText = R.string.auth_bad_oc_version_title;
            break;
        case WRONG_CONNECTION:
            mAuthStatusText = R.string.auth_wrong_connection_title;
            break;
        case TIMEOUT:
            mAuthStatusText = R.string.auth_timeout_title;
            break;
        case INCORRECT_ADDRESS:
            mAuthStatusText = R.string.auth_incorrect_address_title;
            break;
        case SSL_ERROR:
            mAuthStatusText = R.string.auth_ssl_general_error_title;
            break;
        case UNAUTHORIZED:
            mAuthStatusText = R.string.auth_unauthorized;
            break;
        case HOST_NOT_AVAILABLE:
            mAuthStatusText = R.string.auth_unknown_host_title;
            break;
        case INSTANCE_NOT_CONFIGURED:
            mAuthStatusText = R.string.auth_not_configured_title;
            break;
        case FILE_NOT_FOUND:
            mAuthStatusText = R.string.auth_incorrect_path_title;
            break;
        case OAUTH2_ERROR:
            mAuthStatusText = R.string.auth_oauth_error;
            break;
        case OAUTH2_ERROR_ACCESS_DENIED:
            mAuthStatusText = R.string.auth_oauth_error_access_denied;
            break;
        case ACCOUNT_NOT_NEW:
            mAuthStatusText = R.string.auth_account_not_new;
            break;
        case ACCOUNT_NOT_THE_SAME:
            mAuthStatusText = R.string.auth_account_not_the_same;
            break;
        case UNHANDLED_HTTP_CODE:
        case UNKNOWN_ERROR:
            mAuthStatusText = R.string.auth_unknown_error_title;
            break;
        default:
            mAuthStatusText = 0;
            mAuthStatusIcon = 0;
        }
    }

    /**
     * Processes the result of the request for and access token send to an OAuth
     * authorization server.
     * 
     * @param operation Operation performed requesting the access token.
     * @param result Result of the operation.
     */
    private void onGetOAuthAccessTokenFinish(OAuth2GetAccessToken operation, RemoteOperationResult result) {
        try {
            dismissDialog(DIALOG_OAUTH2_LOGIN_PROGRESS);
        } catch (IllegalArgumentException e) {
            // NOTHING TO DO ; can't find out what situation that leads to the
            // exception in this code, but user logs signal that it happens
        }

        String webdav_path = AccountUtils.getWebdavPath(mDiscoveredVersion, mAuthTokenType);
        if (result.isSuccess() && webdav_path != null) {
            // / be gentle with the user
            showDialog(DIALOG_LOGIN_PROGRESS);

            // / time to test the retrieved access token on the ownCloud server
            mAuthToken = ((OAuth2GetAccessToken) operation).getResultTokenMap()
                    .get(OAuth2Constants.KEY_ACCESS_TOKEN);
            Log_OC.d(TAG, "Got ACCESS TOKEN: " + mAuthToken);
            mAuthCheckOperation = new ExistenceCheckOperation("", this, false);
            WebdavClient client = OwnCloudClientUtils.createOwnCloudClient(Uri.parse(mHostBaseUrl + webdav_path),
                    this, true);
            client.setBearerCredentials(mAuthToken);
            mAuthCheckOperation.execute(client, this, mHandler);

        } else {
            if (!result.isSuccess()) {
                Log.d("weiojrrrrrrrrrrrrrrrrrrrrrrr ", result.getLogMessage());
            }
            if (webdav_path == null) {
                Log.d("ieoiwrrrrrrrrrrrrrrrrrrrrrrr ", "webdav path is null ");
            }
            updateAuthStatusIconAndText(result);
            showAuthStatus();
            Log_OC.d(TAG, "Access failed: " + result.getLogMessage());
        }
    }

    /**
     * Processes the result of the access check performed to try the user
     * credentials.
     * 
     * Creates a new account through the AccountManager.
     * 
     * @param operation Access check performed.
     * @param result Result of the operation.
     */
    private void onAuthorizationCheckFinish(ExistenceCheckOperation operation, RemoteOperationResult result) {
        try {
            dismissDialog(DIALOG_LOGIN_PROGRESS);
        } catch (IllegalArgumentException e) {
            // NOTHING TO DO ; can't find out what situation that leads to the
            // exception in this code, but user logs signal that it happens
        }

        if (result.isSuccess()) {
            Log_OC.d(TAG, "Successful access - time to save the account");

            boolean success = false;
            if (mAction == ACTION_CREATE) {
                success = createAccount();

            } else {
                success = updateToken();
            }

            if (success) {
                finish();
            }

        } else if (result.isServerFail() || result.isException()) {
            // / if server fail or exception in authorization, the UI is updated
            // as when a server check failed
            mServerIsChecked = true;
            mServerIsValid = false;
            mIsSslConn = false;
            mOcServerChkOperation = null;
            mDiscoveredVersion = null;
            mHostBaseUrl = normalizeUrl(mHostUrlInput.getText().toString());

            // update status icon and text
            updateServerStatusIconAndText(result);
            showServerStatus();
            mAuthStatusIcon = 0;
            mAuthStatusText = 0;
            showAuthStatus();

            // update input controls state
            showRefreshButton();
            mOkButton.setEnabled(false);

            // very special case (TODO: move to a common place for all the
            // remote operations) (dangerous here?)
            if (result.getCode() == ResultCode.SSL_RECOVERABLE_PEER_UNVERIFIED) {
                mLastSslUntrustedServerResult = result;
                showDialog(DIALOG_SSL_VALIDATOR);
            }

        } else { // authorization fail due to client side - probably wrong
                 // credentials
            updateAuthStatusIconAndText(result);
            showAuthStatus();
            Log_OC.d(TAG, "Access failed: " + result.getLogMessage());
        }

    }

    /**
     * Sets the proper response to get that the Account Authenticator that
     * started this activity saves a new authorization token for mAccount.
     */
    private boolean updateToken() {
        Bundle response = new Bundle();
        response.putString(AccountManager.KEY_ACCOUNT_NAME, mAccount.name);
        response.putString(AccountManager.KEY_ACCOUNT_TYPE, mAccount.type);

        if (AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN.equals(mAuthTokenType)) {
            response.putString(AccountManager.KEY_AUTHTOKEN, mAuthToken);
            // the next line is necessary; by now, notifications are calling
            // directly to the AuthenticatorActivity to update, without
            // AccountManager intervention
            mAccountMgr.setAuthToken(mAccount, mAuthTokenType, mAuthToken);

        } else if (AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE.equals(mAuthTokenType)) {
            String username = getUserNameForSamlSso();

            if (!(mUsernameInput.getText().toString() + "@" + location).equals(username)) {
                // fail - not a new account, but an existing one; disallow
                RemoteOperationResult result = new RemoteOperationResult(ResultCode.ACCOUNT_NOT_THE_SAME);
                updateAuthStatusIconAndText(result);
                showAuthStatus();
                Log_OC.d(TAG, result.getLogMessage());

                return false;
            }

            response.putString(AccountManager.KEY_AUTHTOKEN, mAuthToken);
            // the next line is necessary; by now, notifications are calling
            // directly to the AuthenticatorActivity to update, without
            // AccountManager intervention
            mAccountMgr.setAuthToken(mAccount, mAuthTokenType, mAuthToken);

        } else {
            response.putString(AccountManager.KEY_AUTHTOKEN, mPasswordInput.getText().toString());
            mAccountMgr.setPassword(mAccount, mPasswordInput.getText().toString());
        }
        setAccountAuthenticatorResult(response);

        return true;
    }

    /**
     * Creates a new account through the Account Authenticator that started this
     * activity.
     * 
     * This makes the account permanent.
     * 
     * TODO Decide how to name the OAuth accounts
     */
    private boolean createAccount() {
        // / create and save new ownCloud account
        boolean isOAuth = AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN.equals(mAuthTokenType);
        boolean isSaml = AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE.equals(mAuthTokenType);

        Uri uri = Uri.parse(mHostBaseUrl);
        String username = mUsernameInput.getText().toString().trim();
        username = username + "@" + location;

        if (isSaml) {
            username = getUserNameForSamlSso();

        } else if (isOAuth) {
            username = "OAuth_user" + (new java.util.Random(System.currentTimeMillis())).nextLong();
        }
        String accountName = username + "@" + uri.getHost();
        if (uri.getPort() >= 0) {
            accountName += ":" + uri.getPort();
        }

        mAccount = new Account(accountName, AccountAuthenticator.ACCOUNT_TYPE);
        if (AccountUtils.exists(mAccount, getApplicationContext())) {
            // fail - not a new account, but an existing one; disallow
            RemoteOperationResult result = new RemoteOperationResult(ResultCode.ACCOUNT_NOT_NEW);
            updateAuthStatusIconAndText(result);
            showAuthStatus();
            Log_OC.d(TAG, result.getLogMessage());
            return false;

        } else {

            if (isOAuth || isSaml) {
                mAccountMgr.addAccountExplicitly(mAccount, "", null); // with
                                                                      // external
                                                                      // authorizations,
                                                                      // the
                                                                      // password
                                                                      // is
                                                                      // never
                                                                      // input
                                                                      // in the
                                                                      // app
            } else {
                mAccountMgr.addAccountExplicitly(mAccount, mPasswordInput.getText().toString(), null);
            }

            // / add the new account as default in preferences, if there is none
            // already
            Account defaultAccount = AccountUtils.getCurrentOwnCloudAccount(this);
            if (defaultAccount == null) {
                SharedPreferences.Editor editor = PreferenceManager.getDefaultSharedPreferences(this).edit();
                editor.putString("select_oc_account", accountName);
                editor.commit();
            }

            // / prepare result to return to the Authenticator
            // TODO check again what the Authenticator makes with it; probably
            // has the same effect as addAccountExplicitly, but it's not well
            // done
            final Intent intent = new Intent();
            intent.putExtra(AccountManager.KEY_ACCOUNT_TYPE, AccountAuthenticator.ACCOUNT_TYPE);
            intent.putExtra(AccountManager.KEY_ACCOUNT_NAME, mAccount.name);
            /*
             * if (!isOAuth) intent.putExtra(AccountManager.KEY_AUTHTOKEN,
             * AccountAuthenticator.ACCOUNT_TYPE);
             */
            intent.putExtra(AccountManager.KEY_USERDATA, username);
            if (isOAuth || isSaml) {
                mAccountMgr.setAuthToken(mAccount, mAuthTokenType, mAuthToken);
            }
            // / add user data to the new account; TODO probably can be done in
            // the last parameter addAccountExplicitly, or in KEY_USERDATA
            mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_OC_VERSION, mDiscoveredVersion.toString());
            mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_OC_BASE_URL, mHostBaseUrl);
            if (isSaml) {
                mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_SUPPORTS_SAML_WEB_SSO, "TRUE");
            } else if (isOAuth) {
                mAccountMgr.setUserData(mAccount, AccountAuthenticator.KEY_SUPPORTS_OAUTH2, "TRUE");
            }

            setAccountAuthenticatorResult(intent.getExtras());
            setResult(RESULT_OK, intent);

            // / immediately request for the synchronization of the new account
            Bundle bundle = new Bundle();
            bundle.putBoolean(ContentResolver.SYNC_EXTRAS_MANUAL, true);
            ContentResolver.requestSync(mAccount, AccountAuthenticator.AUTHORITY, bundle);
            syncAccount();
            // Bundle bundle = new Bundle();
            // bundle.putBoolean(ContentResolver.SYNC_EXTRAS_MANUAL, true);
            // ContentResolver.requestSync(mAccount,
            // AccountAuthenticator.AUTHORITY, bundle);
            return true;
        }
    }

    private String getUserNameForSamlSso() {
        if (mAuthToken != null) {
            String[] cookies = mAuthToken.split(";");
            for (int i = 0; i < cookies.length; i++) {
                if (cookies[i].startsWith(KEY_OC_USERNAME_EQUALS)) {
                    String value = Uri.decode(cookies[i].substring(KEY_OC_USERNAME_EQUALS.length()));
                    return value;
                }
            }
        }
        return "";
    }

    /**
     * {@inheritDoc}
     * 
     * Necessary to update the contents of the SSL Dialog
     * 
     * TODO move to some common place for all possible untrusted SSL failures
     */
    @Override
    protected void onPrepareDialog(int id, Dialog dialog, Bundle args) {
        switch (id) {
        case DIALOG_LOGIN_PROGRESS:
        case DIALOG_CERT_NOT_SAVED:
        case DIALOG_OAUTH2_LOGIN_PROGRESS:
            break;
        case DIALOG_SSL_VALIDATOR: {
            ((SslValidatorDialog) dialog).updateResult(mLastSslUntrustedServerResult);
            break;
        }
        default:
            Log_OC.e(TAG, "Incorrect dialog called with id = " + id);
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected Dialog onCreateDialog(int id) {
        Dialog dialog = null;
        switch (id) {
        case DIALOG_LOGIN_PROGRESS: {
            // / simple progress dialog
            ProgressDialog working_dialog = new ProgressDialog(this);
            working_dialog.setMessage(getResources().getString(R.string.auth_trying_to_login));
            working_dialog.setIndeterminate(true);
            working_dialog.setCancelable(true);
            working_dialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
                @Override
                public void onCancel(DialogInterface dialog) {
                    // / TODO study if this is enough
                    Log_OC.i(TAG, "Login canceled");
                    if (mOperationThread != null) {
                        mOperationThread.interrupt();
                        finish();
                    }
                }
            });
            dialog = working_dialog;
            break;
        }
        case DIALOG_OAUTH2_LOGIN_PROGRESS: {
            ProgressDialog working_dialog = new ProgressDialog(this);
            working_dialog.setMessage(String.format("Getting authorization"));
            working_dialog.setIndeterminate(true);
            working_dialog.setCancelable(true);
            working_dialog.setOnCancelListener(new DialogInterface.OnCancelListener() {
                @Override
                public void onCancel(DialogInterface dialog) {
                    Log_OC.i(TAG, "Login canceled");
                    finish();
                }
            });
            dialog = working_dialog;
            break;
        }
        case DIALOG_SSL_VALIDATOR: {
            // / TODO start to use new dialog interface, at least for this (it
            // is a FragmentDialog already)
            dialog = SslValidatorDialog.newInstance(this, mLastSslUntrustedServerResult, this);
            break;
        }
        case DIALOG_CERT_NOT_SAVED: {
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            builder.setMessage(getResources().getString(R.string.ssl_validator_not_saved));
            builder.setCancelable(false);
            builder.setPositiveButton(R.string.common_ok, new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.dismiss();
                };
            });
            dialog = builder.create();
            break;
        }
        default:
            Log_OC.e(TAG, "Incorrect dialog called with id = " + id);
        }
        return dialog;
    }

    /**
     * Starts and activity to open the 'new account' page in the ownCloud web
     * site
     * 
     * @param view 'Account register' button
     */
    public void onRegisterClick(View view) {
        Intent register = new Intent(Intent.ACTION_VIEW, Uri.parse(getString(R.string.url_account_register)));
        setResult(RESULT_CANCELED);
        startActivity(register);
    }

    /**
     * VillageShare
     */
    public void httpRegstr(View view) {
        mPasswordInput2 = (EditText) findViewById(R.id.account_password2);
        mPasswordInput2.setVisibility(View.VISIBLE);

        mPasswordInput.setText("");
        mUsernameInput.setText("");
        mOkButton.setVisibility(View.INVISIBLE);
        Button mNewUserButton = (Button) findViewById(R.id.account_register);
        mNewUserButton.setVisibility(View.INVISIBLE);
        mRegButton = (Button) findViewById(R.id.buttonReg);
        mRegButton.setVisibility(View.VISIBLE);

    }

    public void Reguser(View view) {
        String passwordva2 = mPasswordInput2.getText().toString().trim();
        String passwordva1 = mPasswordInput.getText().toString().trim();
        final String username = mUsernameInput.getText().toString().trim();
        String loc = locationSpinner.getSelectedItem().toString();
        locationSpinner.setOnItemSelectedListener(this);

        final String str1 = mHostUrlInput.getText().toString();
        if (passwordva1.equals("") || passwordva2.equals("") || username.equals("")) {
            Toast.makeText(getApplicationContext(), "One or more of required fields not entered",
                    Toast.LENGTH_SHORT).show();
        } else if (!passwordva1.equals(passwordva2)) {
            mPasswordInput.setText("");
            mPasswordInput2.setText("");
            Toast.makeText(getApplicationContext(), "The two passwords do not match. Please reenter the passwords",
                    Toast.LENGTH_LONG).show();

        } else {
            //username = username + "@" + loc;
            final ArrayList<NameValuePair> params = new ArrayList<NameValuePair>();
            params.add(new BasicNameValuePair("regname", username));
            params.add(new BasicNameValuePair("regpass1", passwordva1));
            params.add(new BasicNameValuePair("regpass2", passwordva2));
            // Log.d("sdn object ",params.toString());
            Log.d("new server ", str1);
            Runnable runnable = new Runnable() {
                @Override
                public void run() {

                    HttpPost post = new HttpPost("http://" + str1 + "/androiduserreg.php");

                    HttpEntity entity;
                    try {
                        entity = new UrlEncodedFormEntity(params, "utf-8");
                        HttpClient client = new DefaultHttpClient();
                        post.setEntity(entity);
                        client.getParams().setParameter(CoreProtocolPNames.USER_AGENT,
                                System.getProperty("http.agent"));
                        post.setHeader("User-Agent", "Android-ownCloud");
                        HttpResponse response = client.execute(post);

                        if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
                            HttpEntity entityresponse = response.getEntity();
                            String jsonentity = EntityUtils.toString(entityresponse);
                            final JSONObject jsonObject = new JSONObject(jsonentity);

                            String registerUserReply = jsonObject.getString("reply");

                            if (registerUserReply.equals(REGISTER_USER_SUCCESS)) {
                                final String location_returned = jsonObject.getString("location");
                                runOnUiThread(new Runnable() {
                                    public void run() {
                                        if (!location_returned.equals(location)) {
                                            Log.d("location returned ", location_returned);
                                            Toast.makeText(getApplicationContext(),
                                                    "Account created and your login id is " + location_returned,
                                                    Toast.LENGTH_LONG).show();
                                        }

                                    }
                                });
                                Intent i = getBaseContext().getPackageManager()
                                        .getLaunchIntentForPackage(getBaseContext().getPackageName());
                                i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                                startActivity(i);
                            } else if (registerUserReply.equals(REGISTER_USER_ALREADY_EXISTS)) {

                                runOnUiThread(new Runnable() {
                                    public void run() {
                                        Toast.makeText(getApplicationContext(),
                                                "Username already exists on the server, try a different one",
                                                Toast.LENGTH_SHORT).show();

                                    }
                                });
                            } else {
                                runOnUiThread(new Runnable() {
                                    public void run() {
                                        Toast.makeText(getApplicationContext(),
                                                "Unable to create account, please try after sometime",
                                                Toast.LENGTH_SHORT).show();

                                    }
                                });
                            }

                        }
                    } catch (UnsupportedEncodingException e) {
                        e.printStackTrace();
                    } catch (IOException e) {
                        e.printStackTrace();
                    } catch (JSONException e) {
                        e.printStackTrace();
                    }

                }
            };
            new Thread(runnable).start();
        }
    }

    /**
     * VillageShare
     */
    /**
     * Updates the content and visibility state of the icon and text associated
     * to the last check on the ownCloud server.
     */
    private void showServerStatus() {
        TextView tv = (TextView) findViewById(R.id.server_status_text);

        if (mServerStatusIcon == 0 && mServerStatusText == 0) {
            tv.setVisibility(View.INVISIBLE);

        } else {
            tv.setText(mServerStatusText);
            tv.setCompoundDrawablesWithIntrinsicBounds(mServerStatusIcon, 0, 0, 0);
            tv.setVisibility(View.VISIBLE);
        }

    }

    /**
     * Updates the content and visibility state of the icon and text associated
     * to the interactions with the OAuth authorization server.
     */
    private void showAuthStatus() {
        if (mAuthStatusIcon == 0 && mAuthStatusText == 0) {
            mAuthStatusLayout.setVisibility(View.INVISIBLE);

        } else {
            mAuthStatusLayout.setText(mAuthStatusText);
            mAuthStatusLayout.setCompoundDrawablesWithIntrinsicBounds(mAuthStatusIcon, 0, 0, 0);
            mAuthStatusLayout.setVisibility(View.VISIBLE);
        }
    }

    private void showRefreshButton() {
        mRefreshButton.setVisibility(View.VISIBLE);
    }

    private void hideRefreshButton() {
        mRefreshButton.setVisibility(View.GONE);
    }

    /**
     * Called when the refresh button in the input field for ownCloud host is
     * clicked.
     * 
     * Performs a new check on the URL in the input field.
     * 
     * @param view Refresh 'button'
     */
    public void onRefreshClick(View view) {
        checkOcServer();
    }

    /**
     * Called when the eye icon in the password field is clicked.
     * 
     * Toggles the visibility of the password in the field.
     */
    public void onViewPasswordClick() {
        int selectionStart = mPasswordInput.getSelectionStart();
        int selectionEnd = mPasswordInput.getSelectionEnd();
        if (isPasswordVisible()) {
            hidePassword();
        } else {
            showPassword();
        }
        mPasswordInput.setSelection(selectionStart, selectionEnd);
    }

    /**
     * Called when the checkbox for OAuth authorization is clicked.
     * 
     * Hides or shows the input fields for user & password.
     * 
     * @param view 'View password' 'button'
     */
    public void onCheckClick(View view) {
        CheckBox oAuth2Check = (CheckBox) view;
        if (oAuth2Check.isChecked()) {
            mAuthTokenType = AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN;
        } else {
            mAuthTokenType = AccountAuthenticator.AUTH_TOKEN_TYPE_PASSWORD;
        }
        adaptViewAccordingToAuthenticationMethod();
    }

    /**
     * Changes the visibility of input elements depending on the current
     * authorization method.
     */
    private void adaptViewAccordingToAuthenticationMethod() {
        if (AccountAuthenticator.AUTH_TOKEN_TYPE_ACCESS_TOKEN.equals(mAuthTokenType)) {
            // OAuth 2 authorization
            mOAuthAuthEndpointText.setVisibility(View.VISIBLE);
            mOAuthTokenEndpointText.setVisibility(View.VISIBLE);
            mUsernameInput.setVisibility(View.GONE);
            mPasswordInput.setVisibility(View.GONE);

        } else if (AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE.equals(mAuthTokenType)) {
            // SAML-based web Single Sign On
            mOAuthAuthEndpointText.setVisibility(View.GONE);
            mOAuthTokenEndpointText.setVisibility(View.GONE);
            mUsernameInput.setVisibility(View.GONE);
            mPasswordInput.setVisibility(View.GONE);
        } else {
            // basic HTTP authorization
            mOAuthAuthEndpointText.setVisibility(View.GONE);
            mOAuthTokenEndpointText.setVisibility(View.GONE);
            mUsernameInput.setVisibility(View.VISIBLE);
            mPasswordInput.setVisibility(View.VISIBLE);
        }
    }

    /**
     * Called from SslValidatorDialog when a new server certificate was
     * correctly saved.
     */
    public void onSavedCertificate() {
        checkOcServer();
    }

    /**
     * Called from SslValidatorDialog when a new server certificate could not be
     * saved when the user requested it.
     */
    @Override
    public void onFailedSavingCertificate() {
        showDialog(DIALOG_CERT_NOT_SAVED);
    }

    /**
     * Called when the 'action' button in an IME is pressed ('enter' in software
     * keyboard).
     * 
     * Used to trigger the authentication check when the user presses 'enter'
     * after writing the password, or to throw the server test when the only
     * field on screen is the URL input field.
     */
    @Override
    public boolean onEditorAction(TextView inputField, int actionId, KeyEvent event) {
        if (actionId == EditorInfo.IME_ACTION_DONE && inputField != null && inputField.equals(mPasswordInput)) {
            if (mOkButton.isEnabled()) {
                mOkButton.performClick();
            }

        } else if (actionId == EditorInfo.IME_ACTION_NEXT && inputField != null
                && inputField.equals(mHostUrlInput)) {
            if (AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE.equals(mAuthTokenType)) {
                checkOcServer();
            }
        }
        return false; // always return false to grant that the software keyboard
                      // is hidden anyway
    }

    private abstract static class RightDrawableOnTouchListener implements OnTouchListener {

        private int fuzz = 75;

        /**
         * {@inheritDoc}
         */
        @Override
        public boolean onTouch(View view, MotionEvent event) {
            Drawable rightDrawable = null;
            if (view instanceof TextView) {
                Drawable[] drawables = ((TextView) view).getCompoundDrawables();
                if (drawables.length > 2) {
                    rightDrawable = drawables[2];
                }
            }
            if (rightDrawable != null) {
                final int x = (int) event.getX();
                final int y = (int) event.getY();
                final Rect bounds = rightDrawable.getBounds();
                if (x >= (view.getRight() - bounds.width() - fuzz)
                        && x <= (view.getRight() - view.getPaddingRight() + fuzz)
                        && y >= (view.getPaddingTop() - fuzz)
                        && y <= (view.getHeight() - view.getPaddingBottom()) + fuzz) {

                    return onDrawableTouch(event);
                }
            }
            return false;
        }

        public abstract boolean onDrawableTouch(final MotionEvent event);
    }

    public void onSamlDialogSuccess(String sessionCookie) {
        mAuthToken = sessionCookie;

        if (sessionCookie != null && sessionCookie.length() > 0) {
            mAuthToken = sessionCookie;
            boolean success = false;
            if (mAction == ACTION_CREATE) {
                success = createAccount();

            } else {
                success = updateToken();
            }
            if (success) {
                finish();
            }
        }

    }

    @Override
    public void onSsoFinished(String sessionCookies) {
        // Toast.makeText(this, "got cookies: " + sessionCookie,
        // Toast.LENGTH_LONG).show();

        if (sessionCookies != null && sessionCookies.length() > 0) {
            Log_OC.d(TAG, "Successful SSO - time to save the account");
            onSamlDialogSuccess(sessionCookies);
            Fragment fd = getSupportFragmentManager().findFragmentByTag(TAG_SAML_DIALOG);
            if (fd != null && fd instanceof SherlockDialogFragment) {
                Dialog d = ((SherlockDialogFragment) fd).getDialog();
                if (d != null && d.isShowing()) {
                    d.dismiss();
                }
            }

        } else {
            // TODO - show fail
            Log_OC.d(TAG, "SSO failed");
        }

    }

    /**
     * Show auth_message
     * 
     * @param message
     */
    private void showAuthMessage(String message) {
        mAuthMessage.setVisibility(View.VISIBLE);
        mAuthMessage.setText(message);
    }

    private void hideAuthMessage() {
        mAuthMessage.setVisibility(View.GONE);
    }

    private void syncAccount() {
        // / immediately request for the synchronization of the new account
        Bundle bundle = new Bundle();
        bundle.putBoolean(ContentResolver.SYNC_EXTRAS_MANUAL, true);
        ContentResolver.requestSync(mAccount, AccountAuthenticator.AUTHORITY, bundle);
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (AccountAuthenticator.AUTH_TOKEN_TYPE_SAML_WEB_SSO_SESSION_COOKIE.equals(mAuthTokenType)
                && mHostUrlInput.hasFocus() && event.getAction() == MotionEvent.ACTION_DOWN) {
            checkOcServer();
        }
        return super.onTouchEvent(event);
    }

    @Override
    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
        // TODO Auto-generated method stub

        location = parent.getItemAtPosition(position);
        Log.d("############************ ", location.toString());
        // Toast.makeText(parent.getContext(), "OnItemSelectedListener : " +
        // parent.getItemAtPosition(position).toString(),Toast.LENGTH_SHORT).show();

    }

    @Override
    public void onNothingSelected(AdapterView<?> arg0) {
        // TODO Auto-generated method stub

    }
}