Password assistance facility for users who have forgotten their password or for users for whom no password has been assigned yet. More...

Collaboration diagram for ilPasswordAssistanceGUI:

Public Member Functions
	executeCommand ()

	showAssistanceForm (ilPropertyFormGUI $form=null)

	submitAssistanceForm ()
	Reads the submitted data from the password assistance form. More...

	showAssignPasswordForm (ilPropertyFormGUI $form=null, $pwassist_id='')
	Assign password form. More...

	submitAssignPasswordForm ()
	Reads the submitted data from the password assistance form. More...

	showUsernameAssistanceForm (ilPropertyFormGUI $form=null)
	Shows the password assistance form. More...

	submitUsernameAssistanceForm ()
	Reads the submitted data from the password assistance form. More...

	showMessageForm ($text)
	This form is used to show a message to the user. More...

Data Fields
const	PERMANENT_LINK_TARGET_PW = 'pwassist'

const	PERMANENT_LINK_TARGET_NAME = 'nameassist'

Protected Member Functions
	getAssistanceForm ()

	getAssignPasswordForm ($pwassist_id)

	getUsernameAssistanceForm ()

	fillPermanentLink ($context)

Protected Attributes
	$ctrl

	$lng

	$rbacreview

	$tpl

	$settings

	$ilias

	$https

Detailed Description

Password assistance facility for users who have forgotten their password or for users for whom no password has been assigned yet.

Author: Werner Randelshofer wrand.nosp@m.els@.nosp@m.hsw.f.nosp@m.hz.c.nosp@m.h; Michael Jansen mjans.nosp@m.en@d.nosp@m.ataba.nosp@m.y.de

Version: $Id$

Definition at line 12 of file class.ilPasswordAssistanceGUI.php.

Member Function Documentation

◆ executeCommand()

ilPasswordAssistanceGUI::executeCommand ( )

Returns: mixed

Definition at line 80 of file class.ilPasswordAssistanceGUI.php.

    {
        // check hack attempts
        if (!$this->settings->get('password_assistance')) { // || AUTH_DEFAULT != AUTH_LOCAL)
            //
            #if(empty($_SESSION['AccountId']) && $_SESSION['AccountId'] !== false)
            {
                #$this->ilias->error_obj->raiseError($this->lng->txt('permission_denied'), $this->ilias->error_obj->WARNING);
            }
        }
 
        // check correct setup
        if (!$this->settings->get('setup_ok')) {
            die('Setup is not completed. Please run setup routine again.');
        }
 
        // Change the language, if necessary.
        // And load the 'pwassist' language module
        $lang = $_GET['lang'];
        if ($lang != null && $lang != '' && $this->lng->getLangKey() != $lang) {
            $lng = new ilLanguage($lang);
        }
        $this->lng->loadLanguageModule('pwassist');
 
        $cmd        = $this->ctrl->getCmd();
        $next_class = $this->ctrl->getNextClass($this);
 
        switch ($next_class) {
            default:
                if ($cmd != '') {
                    return $this->$cmd();
                } else {
                    if (!empty($_GET['key'])) {
                        $this->showAssignPasswordForm();
                    } else {
                        $this->showAssistanceForm();
                    }
                }
                break;
        }
    }

References $_GET, $lang, $lng, settings(), showAssignPasswordForm(), and showAssistanceForm().

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◆ fillPermanentLink()

ilPasswordAssistanceGUI::fillPermanentLink ( $context )

protected

Parameters

string $context

Definition at line 699 of file class.ilPasswordAssistanceGUI.php.

    {
        $this->tpl->setPermanentLink('usr', null, $context);
    }

Referenced by showAssignPasswordForm(), showAssistanceForm(), showMessageForm(), and showUsernameAssistanceForm().

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◆ getAssignPasswordForm()

ilPasswordAssistanceGUI::getAssignPasswordForm ( $pwassist_id )

protected

Parameters

string $pwassist_id

Returns: ilPropertyFormGUI

Definition at line 337 of file class.ilPasswordAssistanceGUI.php.

    {
        require_once 'Services/Form/classes/class.ilPropertyFormGUI.php';
        $form = new ilPropertyFormGUI();
 
        $form->setFormAction($this->ctrl->getFormAction($this, 'submitAssignPasswordForm'));
        $form->setTarget('_parent');
 
        $username = new ilTextInputGUI($this->lng->txt('username'), 'username');
        $username->setRequired(true);
        $form->addItem($username);
 
        $password = new ilPasswordInputGUI($this->lng->txt('password'), 'password');
        $password->setRequired(true);
        $form->addItem($password);
 
        $key = new ilHiddenInputGUI('key');
        $key->setValue($pwassist_id);
        $form->addItem($key);
 
        $form->addCommandButton('submitAssignPasswordForm', $this->lng->txt('submit'));
 
        return $form;
    }

References $form, $key, and $password.

Referenced by showAssignPasswordForm(), and submitAssignPasswordForm().

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◆ getAssistanceForm()

ilPasswordAssistanceGUI::getAssistanceForm ( )

protected

Returns: ilPropertyFormGUI

Definition at line 125 of file class.ilPasswordAssistanceGUI.php.

    {
        require_once 'Services/Form/classes/class.ilPropertyFormGUI.php';
        $form = new ilPropertyFormGUI();
 
        $form->setFormAction($this->ctrl->getFormAction($this, 'submitAssistanceForm'));
        $form->setTarget('_parent');
 
        $username = new ilTextInputGUI($this->lng->txt('username'), 'username');
        $username->setRequired(true);
        $form->addItem($username);
 
        $email = new ilTextInputGUI($this->lng->txt('email'), 'email');
        $email->setRequired(true);
        $form->addItem($email);
 
        $form->addCommandButton('submitAssistanceForm', $this->lng->txt('submit'));
 
        return $form;
    }

References $email, and $form.

Referenced by showAssistanceForm(), and submitAssistanceForm().

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◆ getUsernameAssistanceForm()

ilPasswordAssistanceGUI::getUsernameAssistanceForm ( )

protected

Returns: ilPropertyFormGUI

Definition at line 513 of file class.ilPasswordAssistanceGUI.php.

    {
        require_once 'Services/Form/classes/class.ilPropertyFormGUI.php';
        $form = new ilPropertyFormGUI();
 
        $form->setFormAction($this->ctrl->getFormAction($this, 'submitUsernameAssistanceForm'));
        $form->setTarget('_parent');
 
        $email = new ilTextInputGUI($this->lng->txt('email'), 'email');
        $email->setRequired(true);
        $form->addItem($email);
 
        $form->addCommandButton('submitUsernameAssistanceForm', $this->lng->txt('submit'));
 
        return $form;
    }

References $email, and $form.

Referenced by showUsernameAssistanceForm(), and submitUsernameAssistanceForm().

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◆ showAssignPasswordForm()

ilPasswordAssistanceGUI::showAssignPasswordForm	(	ilPropertyFormGUI	$form = `null`,
			$pwassist_id = `''`
	)

Assign password form.

This form is used to assign a password to a username. To use this form, the following data must be provided as HTTP GET parameter, or in argument pwassist_id: key The key is used to retrieve the password assistance session. If the key is missing, or if the password assistance session has expired, the password assistance form will be shown instead of this form.

Parameters

ilPropertyFormGUI	$form
string	$pwassist_id

Definition at line 374 of file class.ilPasswordAssistanceGUI.php.

    {
        require_once 'include/inc.pwassist_session_handler.php';
        require_once 'Services/Language/classes/class.ilLanguage.php';
 
        // Retrieve form data
        if (!$pwassist_id) {
            $pwassist_id = $_GET['key'];
        }
 
        // Retrieve the session, and check if it is valid
        $pwassist_session = db_pwassist_session_read($pwassist_id);
        if (
            !is_array($pwassist_session) ||
            count($pwassist_session) == 0 ||
            $pwassist_session['expires'] < time()
        ) {
            ilUtil::sendFailure($this->lng->txt('pwassist_session_expired'));
            $this->showAssistanceForm(null);
        } else {
            ilStartUpGUI::initStartUpTemplate('tpl.pwassist_assignpassword.html', true);
            $this->tpl->setVariable('IMG_PAGEHEADLINE', ilUtil::getImagePath('icon_auth.svg'));
            $this->tpl->setVariable('TXT_PAGEHEADLINE', $this->lng->txt('password_assistance'));
 
            $this->tpl->setVariable('TXT_ENTER_USERNAME_AND_NEW_PASSWORD', $this->lng->txt('pwassist_enter_username_and_new_password'));
 
            if (!$form) {
                $form = $this->getAssignPasswordForm($pwassist_id);
            }
            $this->tpl->setVariable('FORM', $form->getHTML());
            $this->fillPermanentLink(self::PERMANENT_LINK_TARGET_PW);
            $this->tpl->show();
        }
    }

References $_GET, $form, db_pwassist_session_read(), fillPermanentLink(), getAssignPasswordForm(), ilUtil\getImagePath(), ilUtil\sendFailure(), and showAssistanceForm().

Referenced by executeCommand(), and submitAssignPasswordForm().

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◆ showAssistanceForm()

ilPasswordAssistanceGUI::showAssistanceForm ( ilPropertyFormGUI $form = null )

Parameters

ilPropertyFormGUI $form

Definition at line 149 of file class.ilPasswordAssistanceGUI.php.

    {
        ilStartUpGUI::initStartUpTemplate('tpl.pwassist_assistance.html', true);
        $this->tpl->setVariable('IMG_PAGEHEADLINE', ilUtil::getImagePath('icon_auth.svg'));
        $this->tpl->setVariable('TXT_PAGEHEADLINE', $this->lng->txt('password_assistance'));
 
        $this->tpl->setVariable(
            'TXT_ENTER_USERNAME_AND_EMAIL',
            str_replace(
                "\\n",
                '<br />',
                sprintf(
                    $this->lng->txt('pwassist_enter_username_and_email'),
                    '<a href="mailto:' . ilUtil::prepareFormOutput($this->settings->get('admin_email')) . '">' . ilUtil::prepareFormOutput($this->settings->get('admin_email')) . '</a>'
                )
            )
        );
 
        if (!$form) {
            $form = $this->getAssistanceForm();
        }
        $this->tpl->setVariable('FORM', $form->getHTML());
        $this->fillPermanentLink(self::PERMANENT_LINK_TARGET_PW);
        $this->tpl->show();
    }

References $form, fillPermanentLink(), getAssistanceForm(), ilUtil\getImagePath(), ilUtil\prepareFormOutput(), and sprintf.

Referenced by executeCommand(), showAssignPasswordForm(), submitAssignPasswordForm(), and submitAssistanceForm().

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◆ showMessageForm()

ilPasswordAssistanceGUI::showMessageForm ( $text )

This form is used to show a message to the user.

Parameters

string $text

Definition at line 685 of file class.ilPasswordAssistanceGUI.php.

    {
        ilStartUpGUI::initStartUpTemplate('tpl.pwassist_message.html', true);
        $this->tpl->setVariable('TXT_PAGEHEADLINE', $this->lng->txt('password_assistance'));
        $this->tpl->setVariable('IMG_PAGEHEADLINE', ilUtil::getImagePath('icon_auth.svg'));
 
        $this->tpl->setVariable('TXT_TEXT', str_replace("\\n", '<br />', $text));
        $this->fillPermanentLink(self::PERMANENT_LINK_TARGET_NAME);
        $this->tpl->show();
    }

References $text, fillPermanentLink(), and ilUtil\getImagePath().

Referenced by submitAssignPasswordForm(), submitAssistanceForm(), and submitUsernameAssistanceForm().

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◆ showUsernameAssistanceForm()

ilPasswordAssistanceGUI::showUsernameAssistanceForm ( ilPropertyFormGUI $form = null )

Shows the password assistance form.

This form is used to request a password assistance mail from ILIAS. This form contains the following fields: username email When the user submits the form, then this script is invoked with the cmd 'submitAssistanceForm'.

Parameters

ilPropertyFormGUI $form

Definition at line 540 of file class.ilPasswordAssistanceGUI.php.

    {
        ilStartUpGUI::initStartUpTemplate('tpl.pwassist_username_assistance.html', true);
        $this->tpl->setVariable('IMG_PAGEHEADLINE', ilUtil::getImagePath('icon_auth.svg'));
        $this->tpl->setVariable('TXT_PAGEHEADLINE', $this->lng->txt('password_assistance'));
 
        $this->tpl->setVariable(
            'TXT_ENTER_USERNAME_AND_EMAIL',
            str_replace(
                "\\n",
                '<br />',
                sprintf(
                    $this->lng->txt('pwassist_enter_email'),
                    '<a href="mailto:' . ilUtil::prepareFormOutput($this->settings->get('admin_email')) . '">' . ilUtil::prepareFormOutput($this->settings->get('admin_email')) . '</a>'
                )
            )
        );
 
        if (!$form) {
            $form = $this->getUsernameAssistanceForm();
        }
        $this->tpl->setVariable('FORM', $form->getHTML());
        $this->fillPermanentLink(self::PERMANENT_LINK_TARGET_NAME);
        $this->tpl->show();
    }

References $form, fillPermanentLink(), ilUtil\getImagePath(), getUsernameAssistanceForm(), ilUtil\prepareFormOutput(), and sprintf.

Referenced by submitUsernameAssistanceForm().

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◆ submitAssignPasswordForm()

ilPasswordAssistanceGUI::submitAssignPasswordForm ( )

Reads the submitted data from the password assistance form.

The following form fields are read as HTTP POST parameters: key username password1 password2 The key is used to retrieve the password assistance session. If the key is missing, or if the password assistance session has expired, the password assistance form will be shown instead of this form. If the password assistance session is valid, and if the username matches the username, for which the password assistance has been requested, and if the new password is valid, ILIAS assigns the password to the user. Note: To prevent replay attacks, the session is deleted when the password has been assigned successfully.

Definition at line 425 of file class.ilPasswordAssistanceGUI.php.

    {
        require_once 'include/inc.pwassist_session_handler.php';
 
        // We need to fetch this before form instantiation
        $pwassist_id = ilUtil::stripSlashes($_POST['key']);
 
        $form = $this->getAssignPasswordForm($pwassist_id);
        if (!$form->checkInput()) {
            $form->setValuesByPost();
            $this->showAssistanceForm($form);
            return;
        }
 
        $username    = $form->getInput('username');
        $password    = $form->getInput('password');
        $pwassist_id = $form->getInput('key');
 
        // Retrieve the session
        $pwassist_session = db_pwassist_session_read($pwassist_id);
 
        if (
            !is_array($pwassist_session) ||
            count($pwassist_session) == 0 ||
            $pwassist_session['expires'] < time()
        ) {
            ilUtil::sendFailure(str_replace("\\n", '', $this->lng->txt('pwassist_session_expired')));
            $form->setValuesByPost();
            $this->showAssistanceForm($form);
            return;
        } else {
            $is_successful = true;
            $message       = '';
 
            $userObj = new ilObjUser($pwassist_session['user_id']);
            if ($userObj == null) {
                $message       = $this->lng->txt('user_does_not_exist');
                $is_successful = false;
            }
 
            // check if the username entered by the user matches the
            // one of the user object.
            if ($is_successful && strcasecmp($userObj->getLogin(), $username) != 0) {
                $message       = $this->lng->txt('pwassist_login_not_match');
                $is_successful = false;
            }
 
            $error_lng_var = '';
            if (!ilUtil::isPasswordValidForUserContext($password, $userObj, $error_lng_var)) {
                $message       = $this->lng->txt($error_lng_var);
                $is_successful = false;
            }
 
            // End of validation
            // If the validation was successful, we change the password of the
            // user.
            // ------------------
            if ($is_successful) {
                $is_successful = $userObj->resetPassword($password, $password);
                if (!$is_successful) {
                    $message = $this->lng->txt('passwd_invalid');
                }
            }
 
            // If we are successful so far, we update the user object.
            // ------------------
            if ($is_successful) {
                $userObj->update();
            }
 
            // If we are successful, we destroy the password assistance
            // session and redirect to the login page.
            // Else we display the form again along with an error message.
            // ------------------
            if ($is_successful) {
                db_pwassist_session_destroy($pwassist_id);
                $this->showMessageForm(sprintf($this->lng->txt('pwassist_password_assigned'), $username));
            } else {
                ilUtil::sendFailure(str_replace("\\n", '', $message));
                $form->setValuesByPost();
                $this->showAssignPasswordForm($form, $pwassist_id);
            }
        }
    }

References $_POST, $form, $message, $password, db_pwassist_session_destroy(), db_pwassist_session_read(), getAssignPasswordForm(), ilObjUser\getLogin(), ilUtil\isPasswordValidForUserContext(), ilUtil\sendFailure(), showAssignPasswordForm(), showAssistanceForm(), showMessageForm(), sprintf, ilUtil\stripSlashes(), and ilObject\update().

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◆ submitAssistanceForm()

ilPasswordAssistanceGUI::submitAssistanceForm ( )

Reads the submitted data from the password assistance form.

The following form fields are read as HTTP POST parameters: username email If the submitted username and email address matches an entry in the user data table, then ILIAS creates a password assistance session for the user, and sends a password assistance mail to the email address. For details about the creation of the session and the e-mail see function sendPasswordAssistanceMail().

Definition at line 186 of file class.ilPasswordAssistanceGUI.php.

    {
        $form = $this->getAssistanceForm();
        if (!$form->checkInput()) {
            $form->setValuesByPost();
            $this->showAssistanceForm($form);
            return;
        }
 
        $username = $form->getInput('username');
        $email    = $form->getInput('email');
 
        $userObj = null;
        $userid  = ilObjUser::getUserIdByLogin($username);
        $txt_key = 'pwassist_invalid_username_or_email';
        if ($userid != 0) {
            $userObj = new ilObjUser($userid);
            if (strcasecmp($userObj->getEmail(), $email) != 0) {
                $userObj = null;
            } elseif (!strlen($email)) {
                $userObj = null;
                $txt_key = 'pwassist_no_email_found';
            } elseif (
                (
                    $userObj->getAuthMode(true) != AUTH_LOCAL ||
                    ($userObj->getAuthMode(true) == AUTH_DEFAULT && AUTH_DEFAULT != AUTH_LOCAL)
                ) && !(
                    $userObj->getAuthMode(true) == AUTH_SAML
                )
            ) {
                $userObj = null;
                $txt_key = 'pwassist_invalid_auth_mode';
            }
        }
 
        // No matching user object found?
        // Show the password assistance form again, and display an error message.
        if ($userObj == null) {
            ilUtil::sendFailure(str_replace("\\n", '', $this->lng->txt($txt_key)));
            $form->setValuesByPost();
            $this->showAssistanceForm($form);
        } else {
            // Matching user object found?
            // Check if the user is permitted to use the password assistance function,
            // and then send a password assistance mail to the email address.
            // FIXME: Extend this if-statement to check whether the user
            // has the permission to use the password assistance function.
            // The anonymous user and users who are system administrators are
            // not allowed to use this feature
            if (
                $this->rbacreview->isAssigned($userObj->getId(), ANONYMOUS_ROLE_ID) ||
                $this->rbacreview->isAssigned($userObj->getId(), SYSTEM_ROLE_ID)
            ) {
                ilUtil::sendFailure(str_replace("\\n", '', $this->lng->txt('pwassist_not_permitted')));
                $form->setValuesByPost();
                $this->showAssistanceForm($form);
            } else {
                $this->sendPasswordAssistanceMail($userObj);
                $this->showMessageForm(sprintf($this->lng->txt('pwassist_mail_sent'), $email));
            }
        }
    }

References $email, $form, $userid, AUTH_LOCAL, AUTH_SAML, getAssistanceForm(), ilObjUser\getUserIdByLogin(), ilUtil\sendFailure(), showAssistanceForm(), showMessageForm(), and sprintf.

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◆ submitUsernameAssistanceForm()

ilPasswordAssistanceGUI::submitUsernameAssistanceForm ( )

Reads the submitted data from the password assistance form.

The following form fields are read as HTTP POST parameters: username email If the submitted username and email address matches an entry in the user data table, then ILIAS creates a password assistance session for the user, and sends a password assistance mail to the email address. For details about the creation of the session and the e-mail see function sendPasswordAssistanceMail().

Definition at line 577 of file class.ilPasswordAssistanceGUI.php.

    {
        require_once 'Services/User/classes/class.ilObjUser.php';
        require_once 'Services/Utilities/classes/class.ilUtil.php';
 
        $form = $this->getUsernameAssistanceForm();
        if (!$form->checkInput()) {
            $form->setValuesByPost();
            $this->showUsernameAssistanceForm($form);
            return;
        }
 
        // Retrieve form data
        $email = $form->getInput('email');
 
        // Retrieve a user object with matching user name and email address.
        $logins = ilObjUser::_getUserIdsByEmail($email);
 
        // No matching user object found?
        // Show the password assistance form again, and display an error message.
        if (!is_array($logins) || count($logins) < 1) {
            ilUtil::sendFailure(str_replace("\\n", '', $this->lng->txt('pwassist_invalid_email')));
            $form->setValuesByPost();
            $this->showUsernameAssistanceForm($form);
        } else {
            // Matching user object found?
            // Check if the user is permitted to use the password assistance function,
            // and then send a password assistance mail to the email address.
 
            // FIXME: Extend this if-statement to check whether the user
            // has the permission to use the password assistance function.
            // The anonymous user and users who are system administrators are
            // not allowed to use this feature
            /*          if ($rbacreview->isAssigned($userObj->getID, ANONYMOUS_ROLE_ID)
                    || $rbacreview->isAssigned($userObj->getID, SYSTEM_ROLE_ID)
                    )
                    {
                        $this->showAssistanceForm
                        (
                            $lng->txt("pwassist_not_permitted"),
                            $username,
                            $email
                        );
                    }
                    else */
            {
                $this->sendUsernameAssistanceMail($email, $logins);
                $this->showMessageForm(sprintf($this->lng->txt('pwassist_mail_sent'), $email));
            }
        }
    }