Exemple #1
0
 /**
  * change the visibility of a course
  *
  * @return void
  */
 function change_visibility_action()
 {
     if ((Config::get()->ALLOW_DOZENT_VISIBILITY || $GLOBALS['perm']->have_perm('admin')) && !LockRules::Check($GLOBALS['SessionSeminar'], 'seminar_visibility') && Seminar_Session::check_ticket(Request::option('studip_ticket'))) {
         $course = Course::findCurrent();
         if (!$course->visible) {
             StudipLog::log('SEM_VISIBLE', $course->id);
             $course->visible = 1;
             $msg = _("Die Veranstaltung wurde sichtbar gemacht.");
         } else {
             StudipLog::log('SEM_INVISIBLE', $course->id);
             $course->visible = 0;
             $msg = _("Die Veranstaltung wurde versteckt.");
         }
         if ($course->store()) {
             PageLayout::postMessage(MessageBox::success($msg));
         }
     }
     $this->redirect($this->url_for('/index'));
 }
Exemple #2
0
 function show_action()
 {
     $this->url_params = array();
     if (Request::get('from')) {
         $this->url_params['from'] = Request::get('from');
     }
     if (Request::get('open_node')) {
         $this->url_params['open_node'] = Request::get('open_node');
     }
     if (!Request::isXhr()) {
         Navigation::activateItem('course/admin/study_areas');
         $sidebar = Sidebar::get();
         $sidebar->setImage('sidebar/admin-sidebar.png');
         if ($this->course) {
             $links = new ActionsWidget();
             foreach (Navigation::getItem('/course/admin/main') as $nav) {
                 if ($nav->isVisible(true)) {
                     $image = $nav->getImage();
                     $links->addLink($nav->getTitle(), URLHelper::getLink($nav->getURL(), array('studip_ticket' => Seminar_Session::get_ticket())), $image);
                 }
             }
             $sidebar->addWidget($links);
             // Entry list for admin upwards.
             if ($GLOBALS['perm']->have_studip_perm("admin", $GLOBALS['SessionSeminar'])) {
                 $list = new SelectorWidget();
                 $list->setUrl("?#admin_top_links");
                 $list->setSelectParameterName("cid");
                 foreach (AdminCourseFilter::get()->getCoursesForAdminWidget() as $seminar) {
                     $list->addElement(new SelectElement($seminar['Seminar_id'], $seminar['Name']), 'select-' . $seminar['Seminar_id']);
                 }
                 $list->setSelection($this->course->id);
                 $sidebar->addWidget($list);
             }
         }
     }
     if (Request::get('open_node')) {
         $this->values['StudyAreasWizardStep']['open_node'] = Request::get('open_node');
     }
     $this->tree = $this->step->getStepTemplate($this->values, 0, 0);
 }
Exemple #3
0
 public function decline_inst_action($inst_id)
 {
     $institut = Institute::find($inst_id);
     $ticket_check = Seminar_Session::check_ticket(Request::option('studipticket'));
     if (Request::option('cmd') != 'kill' && Request::get('cmd') != 'back') {
         $this->flash['decline_inst'] = true;
         $this->flash['inst_id'] = $inst_id;
         $this->flash['name'] = $institut->name;
         $this->flash['studipticket'] = Seminar_Session::get_ticket();
     } else {
         if (Request::get('cmd') == 'kill' && $ticket_check && Request::get('cmd') != 'back') {
             $query = "DELETE FROM user_inst WHERE user_id = ? AND Institut_id = ? AND inst_perms = 'user'";
             $statement = DBManager::get()->prepare($query);
             $statement->execute(array($GLOBALS['user']->id, $inst_id));
             if ($statement->rowCount() > 0) {
                 PageLayout::postMessage(MessageBox::success(sprintf(_("Die Zuordnung zur Einrichtung %s wurde aufgehoben."), "<b>" . htmlReady($institut->name) . "</b>")));
             } else {
                 PageLayout::postMessage(MessageBox::error(_('Datenbankfehler')));
             }
         }
     }
     $this->redirect('my_institutes/index');
 }
Exemple #4
0
 /**
  * default action of this controller: proxy media data
  */
 public function index_action()
 {
     $url = Request::get('url');
     $media_proxy = new MediaProxy();
     $config = Config::GetInstance();
     $modified_since = NULL;
     if (!Seminar_Session::is_current_session_authenticated() || $config->getValue('LOAD_EXTERNAL_MEDIA') != 'proxy') {
         throw new AccessDeniedException();
     }
     if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
         $modified_since = strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']);
     }
     ini_set('default_socket_timeout', 5);
     $this->render_nothing();
     //stop output buffering started in Trails_Dispatcher::dispatch()
     while (ob_get_level()) {
         ob_end_clean();
     }
     try {
         $media_proxy->readURL($url, $modified_since);
     } catch (MediaProxyException $ex) {
         header($ex->getMessage());
     }
 }
Exemple #5
0
/**
 * Check if media proxy should be used and if so return the respective URL.
 *
 * @param string $url   URL to media file.
 * @return mixed        URL string to media file (possibly 'proxied')
 *                      or NULL if URL is invalid.
 */
function getMediaUrl($url)
{
    // even though proxied URLs shouldn't be stored in the database, the
    // next line will handle those cases where they're accidentally there
    $url = decodeMediaProxyUrl($url);
    // handle internal media links
    if (isStudipMediaUrl($url)) {
        return transformInternalIdnaLink($url);
    }
    if (isInternalLink($url)) {
        // link is studip-internal, but not to a valid media location
        throw new InvalidInternalLinkException($url);
    }
    // handle external media links
    $external_media = \Config::get()->LOAD_EXTERNAL_MEDIA;
    if ($external_media === 'proxy' && \Seminar_Session::is_current_session_authenticated()) {
        // media proxy must be accessed by an internal link
        return encodeMediaProxyUrl($url);
    }
    if ($external_media === 'allow') {
        return $url;
    }
    throw new ExternalMediaDeniedException($url);
}
Exemple #6
0
 /**
  * This action remove a user from course
  * @param $course_id
  */
 public function decline_action($course_id, $waiting = null)
 {
     $current_seminar = Seminar::getInstance($course_id);
     $ticket_check = Seminar_Session::check_ticket(Request::option('studipticket'));
     if (LockRules::Check($course_id, 'participants')) {
         $lockdata = LockRules::getObjectRule($course_id);
         PageLayout::postMessage(MessageBox::error(sprintf(_("Sie können sich nicht von der Veranstaltung <b>%s</b> abmelden."), htmlReady($current_seminar->name))));
         if ($lockdata['description']) {
             PageLayout::postMessage(MessageBox::info(formatLinks($lockdata['description'])));
         }
         $this->redirect('my_courses/index');
         return;
     }
     if (Request::option('cmd') == 'back') {
         $this->redirect('my_courses/index');
         return;
     }
     if (Request::option('cmd') != 'kill' && Request::option('cmd') != 'kill_admission') {
         if ($current_seminar->admission_binding && Request::get('cmd') != 'suppose_to_kill_admission' && !LockRules::Check($current_seminar->getId(), 'participants')) {
             PageLayout::postMessage(MessageBox::error(sprintf(_("Die Veranstaltung <b>%s</b> ist als <b>bindend</b> angelegt.\n                    Wenn Sie sich abmelden wollen, müssen Sie sich an die Lehrende der Veranstaltung wenden."), htmlReady($current_seminar->name))));
             $this->redirect('my_courses/index');
             return;
         }
         if (Request::get('cmd') == 'suppose_to_kill') {
             // check course admission
             list(, $admission_end_time) = @array_values($current_seminar->getAdmissionTimeFrame());
             $admission_enabled = $current_seminar->isAdmissionEnabled();
             $admission_locked = $current_seminar->isAdmissionLocked();
             if ($admission_enabled || $admission_locked || (int) $current_seminar->admission_prelim == 1) {
                 $message = sprintf(_('Wollen Sie sich von der teilnahmebeschränkten Veranstaltung "%s" wirklich abmelden? Sie verlieren damit die Berechtigung für die Veranstaltung und müssen sich ggf. neu anmelden!'), $current_seminar->name);
             } else {
                 if (isset($admission_end_time) && $admission_end_time < time()) {
                     $message = sprintf(_('Wollen Sie sich von der teilnahmebeschränkten Veranstaltung "%s" wirklich abmelden? Der Anmeldzeitraum ist abgelaufen und Sie können sich nicht wieder anmelden!'), $current_seminar->name);
                 } else {
                     $message = sprintf(_('Wollen Sie sich von der Veranstaltung "%s" wirklich abmelden?'), $current_seminar->name);
                 }
             }
             $this->flash['cmd'] = 'kill';
         } else {
             if (admission_seminar_user_get_position($GLOBALS['user']->id, $course_id) === false) {
                 $message = sprintf(_('Wollen Sie sich von der Anmeldeliste der Veranstaltung "%s" wirklich abmelden?'), $current_seminar->name);
             } else {
                 $message = sprintf(_('Wollen Sie sich von der Warteliste der Veranstaltung "%s" wirklich abmelden? Sie verlieren damit die bereits erreichte Position und müssen sich ggf. neu anmelden!'), $current_seminar->name);
             }
             $this->flash['cmd'] = 'kill_admission';
         }
         $this->flash['decline_course'] = true;
         $this->flash['course_id'] = $course_id;
         $this->flash['message'] = $message;
         $this->flash['studipticket'] = Seminar_Session::get_ticket();
         $this->redirect('my_courses/index');
         return;
     } else {
         if (!LockRules::Check($course_id, 'participants') && $ticket_check && Request::option('cmd') != 'back' && Request::get('cmd') != 'kill_admission') {
             $query = "DELETE FROM seminar_user WHERE user_id = ? AND Seminar_id = ?";
             $statement = DBManager::get()->prepare($query);
             $statement->execute(array($GLOBALS['user']->id, $course_id));
             if ($statement->rowCount() == 0) {
                 PageLayout::postMessage(MessageBox::error(_('In der ausgewählten Veranstaltung wurde die gesuchten Personen nicht gefunden und konnte daher nicht ausgetragen werden.')));
             } else {
                 // LOGGING
                 StudipLog::log('SEM_USER_DEL', $course_id, $GLOBALS['user']->id, 'Hat sich selbst ausgetragen');
                 // enable others to do something after the user has been deleted
                 NotificationCenter::postNotification('UserDidLeaveCourse', $course_id, $GLOBALS['user']->id);
                 // Delete from statusgroups
                 RemovePersonStatusgruppeComplete(get_username(), $course_id);
                 // Are successor available
                 update_admission($course_id);
                 PageLayout::postMessage(MessageBox::success(sprintf(_("Erfolgreich von Veranstaltung <b>%s</b> abgemeldet."), htmlReady($current_seminar->name))));
             }
         } else {
             // LOGGING
             StudipLog::log('SEM_USER_DEL', $course_id, $GLOBALS['user']->id, 'Hat sich selbst aus der Warteliste ausgetragen');
             if ($current_seminar->isAdmissionEnabled()) {
                 $prio_delete = AdmissionPriority::unsetPriority($current_seminar->getCourseSet()->getId(), $GLOBALS['user']->id, $course_id);
             }
             $query = "DELETE FROM admission_seminar_user WHERE user_id = ? AND seminar_id = ?";
             $statement = DBManager::get()->prepare($query);
             $statement->execute(array($GLOBALS['user']->id, $course_id));
             if ($statement->rowCount() || $prio_delete) {
                 //Warteliste neu sortieren
                 renumber_admission($course_id);
                 //Pruefen, ob es Nachruecker gibt
                 update_admission($course_id);
                 PageLayout::postMessage(MessageBox::success(sprintf(_("Der Eintrag in der Anmelde- bzw. Warteliste der Veranstaltung <b>%s</b> wurde aufgehoben.\n                    Wenn Sie an der Veranstaltung teilnehmen wollen, müssen Sie sich erneut bewerben."), htmlReady($current_seminar->name))));
             }
         }
         $this->redirect('my_courses/index');
         return;
     }
 }
 /**
  * @return bool|string
  */
 function auth_doregister()
 {
     global $_language_path;
     $this->error_msg = "";
     // check for direct link to register2.php
     if (!$_SESSION['_language'] || $_SESSION['_language'] == "") {
         $_SESSION['_language'] = get_accepted_languages();
     }
     $_language_path = init_i18n($_SESSION['_language']);
     $this->auth["uname"] = Request::username('username');
     // This provides access for "crcregister.ihtml"
     $validator = new email_validation_class();
     // Klasse zum Ueberpruefen der Eingaben
     $validator->timeout = 10;
     // Wie lange warten wir auf eine Antwort des Mailservers?
     if (!Seminar_Session::check_ticket(Request::option('login_ticket'))) {
         return false;
     }
     $username = trim(Request::get('username'));
     $Vorname = trim(Request::get('Vorname'));
     $Nachname = trim(Request::get('Nachname'));
     // accept only registered domains if set
     $cfg = Config::GetInstance();
     $email_restriction = $cfg->getValue('EMAIL_DOMAIN_RESTRICTION');
     if ($email_restriction) {
         $Email = trim(Request::get('Email')) . '@' . trim(Request::get('emaildomain'));
     } else {
         $Email = trim(Request::get('Email'));
     }
     if (!$validator->ValidateUsername($username)) {
         $this->error_msg = $this->error_msg . _("Der gewählte Benutzername ist zu kurz!") . "<br>";
         return false;
     }
     // username syntaktisch falsch oder zu kurz
     // auf doppelte Vergabe wird weiter unten getestet.
     if (!$validator->ValidatePassword(Request::quoted('password'))) {
         $this->error_msg = $this->error_msg . _("Das Passwort ist zu kurz!") . "<br>";
         return false;
     }
     if (!$validator->ValidateName($Vorname)) {
         $this->error_msg = $this->error_msg . _("Der Vorname fehlt oder ist unsinnig!") . "<br>";
         return false;
     }
     // Vorname nicht korrekt oder fehlend
     if (!$validator->ValidateName($Nachname)) {
         $this->error_msg = $this->error_msg . _("Der Nachname fehlt oder ist unsinnig!") . "<br>";
         return false;
         // Nachname nicht korrekt oder fehlend
     }
     if (!$validator->ValidateEmailAddress($Email)) {
         $this->error_msg = $this->error_msg . _("Die E-Mail-Adresse fehlt oder ist falsch geschrieben!") . "<br>";
         return false;
     }
     // E-Mail syntaktisch nicht korrekt oder fehlend
     $REMOTE_ADDR = $_SERVER["REMOTE_ADDR"];
     $Zeit = date("H:i:s, d.m.Y", time());
     if (!$validator->ValidateEmailHost($Email)) {
         // Mailserver nicht erreichbar, ablehnen
         $this->error_msg = $this->error_msg . _("Der Mailserver ist nicht erreichbar, bitte überprüfen Sie, ob Sie E-Mails mit der angegebenen Adresse verschicken und empfangen können!") . "<br>";
         return false;
     } else {
         // Server ereichbar
         if (!$validator->ValidateEmailBox($Email)) {
             // aber user unbekannt. Mail an abuse!
             StudipMail::sendAbuseMessage("Register", "Emailbox unbekannt\n\nUser: {$username}\nEmail: {$Email}\n\nIP: {$REMOTE_ADDR}\nZeit: {$Zeit}\n");
             $this->error_msg = $this->error_msg . _("Die angegebene E-Mail-Adresse ist nicht erreichbar, bitte überprüfen Sie Ihre Angaben!") . "<br>";
             return false;
         } else {
             // Alles paletti, jetzt kommen die Checks gegen die Datenbank...
         }
     }
     $check_uname = StudipAuthAbstract::CheckUsername($username);
     if ($check_uname['found']) {
         //   error_log("username schon vorhanden", 0);
         $this->error_msg = $this->error_msg . _("Der gewählte Benutzername ist bereits vorhanden!") . "<br>";
         return false;
         // username schon vorhanden
     }
     if (count(User::findBySQL("Email LIKE " . DbManager::get()->quote($Email)))) {
         $this->error_msg = $this->error_msg . _("Die angegebene E-Mail-Adresse wird bereits von einem anderen Benutzer verwendet. Sie müssen eine andere E-Mail-Adresse angeben!") . "<br>";
         return false;
         // Email schon vorhanden
     }
     // alle Checks ok, Benutzer registrieren...
     $hasher = UserManagement::getPwdHasher();
     $new_user = new User();
     $new_user->username = $username;
     $new_user->perms = 'user';
     $new_user->password = $hasher->HashPassword(Request::get('password'));
     $new_user->vorname = $Vorname;
     $new_user->nachname = $Nachname;
     $new_user->email = $Email;
     $new_user->geschlecht = Request::int('geschlecht');
     $new_user->title_front = trim(Request::get('title_front', Request::get('title_front_chooser')));
     $new_user->title_rear = trim(Request::get('title_rear', Request::get('title_rear_chooser')));
     $new_user->auth_plugin = 'standard';
     $new_user->store();
     if ($new_user->user_id) {
         self::sendValidationMail($new_user);
         $this->auth["perm"] = $new_user->perms;
         return $new_user->user_id;
     }
 }
Exemple #8
0
 public function execute($last_result, $parameters = array())
 {
     $sess = new Seminar_Session();
     $sess->set_container();
     return $sess->gc();
 }
Exemple #9
0
<?php

# Lifter010: TODO
/* * * * * * * * * * * * *
 * * * I N F O B O X * * *
 * * * * * * * * * * * * */
$sidebar = Sidebar::get();
$sidebar->setImage('sidebar/admin-sidebar.png');
if (Course::findCurrent()) {
    $links = new ActionsWidget();
    foreach (Navigation::getItem('/course/admin/main') as $nav) {
        if ($nav->isVisible(true)) {
            $links->addLink($nav->getTitle(), URLHelper::getLink($nav->getURL(), array('studip_ticket' => Seminar_Session::get_ticket())), $nav->getImage(), $nav->getLinkAttributes());
        }
    }
    $sidebar->addWidget($links);
    // Entry list for admin upwards.
    if ($GLOBALS['perm']->have_studip_perm("admin", $GLOBALS['SessionSeminar'])) {
        $list = new SelectorWidget();
        $list->setUrl("?#admin_top_links");
        $list->setSelectParameterName("cid");
        foreach (AdminCourseFilter::get()->getCoursesForAdminWidget() as $seminar) {
            $list->addElement(new SelectElement($seminar['Seminar_id'], $seminar['Name']), 'select-' . $seminar['Seminar_id']);
        }
        $list->setSelection($this->course_id);
        $sidebar->addWidget($list);
    }
}
?>

<ul class="boxed-grid">
Exemple #10
0
/**
 * check if the passed ticket is valid
 *
 * @param string $studipticket the ticket-id to check
 *
 * @return bool
 */
function check_ticket($studipticket)
{
    return Seminar_Session::check_ticket($studipticket);
}
Exemple #11
0
 public function index_action()
 {
     global $perm, $PATH_EXPORT;
     $sem = Seminar::getInstance($this->course_id);
     // old message style
     if ($_SESSION['sms_msg']) {
         $this->msg = $_SESSION['sms_msg'];
         unset($_SESSION['sms_msg']);
     }
     $this->sort_by = Request::option('sortby', 'nachname');
     $this->order = Request::option('order', 'desc');
     $this->sort_status = Request::get('sort_status');
     Navigation::activateItem('/course/members/view');
     if (Request::int('toggle')) {
         $this->order = $this->order == 'desc' ? 'asc' : 'desc';
     }
     $filtered_members = $this->members->getMembers($this->sort_status, $this->sort_by . ' ' . $this->order, !$this->is_tutor ? $this->user_id : null);
     if ($this->is_tutor) {
         $filtered_members = array_merge($filtered_members, $this->members->getAdmissionMembers($this->sort_status, $this->sort_by . ' ' . $this->order));
         $this->awaiting = $filtered_members['awaiting']->toArray('user_id username vorname nachname visible mkdate');
         $this->accepted = $filtered_members['accepted']->toArray('user_id username vorname nachname visible mkdate');
         $this->claiming = $filtered_members['claiming']->toArray('user_id username vorname nachname visible mkdate');
     }
     // Check autor-perms
     if (!$this->is_tutor) {
         SkipLinks::addIndex(_("Sichtbarkeit ändern"), 'change_visibility');
         // filter invisible user
         $this->invisibles = count($filtered_members['autor']->findBy('visible', 'no')) + count($filtered_members['user']->findBy('visible', 'no'));
         $current_user_id = $this->user_id;
         $exclude_invisibles = function ($user) use($current_user_id) {
             return $user['visible'] != 'no' || $user['user_id'] == $current_user_id;
         };
         $filtered_members['autor'] = $filtered_members['autor']->filter($exclude_invisibles);
         $filtered_members['user'] = $filtered_members['user']->filter($exclude_invisibles);
         $this->my_visibility = $this->getUserVisibility();
         if (!$this->my_visibility['iam_visible']) {
             $this->invisibles--;
         }
     }
     // get member informations
     $this->dozenten = $filtered_members['dozent']->toArray('user_id username vorname nachname');
     $this->tutoren = $filtered_members['tutor']->toArray('user_id username vorname nachname mkdate');
     $this->autoren = $filtered_members['autor']->toArray('user_id username vorname nachname visible mkdate');
     $this->users = $filtered_members['user']->toArray('user_id username vorname nachname visible mkdate');
     $this->studipticket = Seminar_Session::get_ticket();
     $this->subject = $this->getSubject();
     $this->groups = $this->status_groups;
     // Check Seminar
     if ($this->is_tutor && $sem->isAdmissionEnabled()) {
         $this->course = $sem;
         $distribution_time = $sem->getCourseSet()->getSeatDistributionTime();
         if ($sem->getCourseSet()->hasAlgorithmRun()) {
             $this->waitingTitle = _("Warteliste");
             if (!$sem->admission_disable_waitlist_move) {
                 $this->waitingTitle .= ' (' . _("automatisches Nachrücken ist eingeschaltet") . ')';
             } else {
                 $this->waitingTitle .= ' (' . _("automatisches Nachrücken ist ausgeschaltet") . ')';
             }
             $this->semAdmissionEnabled = 2;
             $this->waiting_type = 'awaiting';
         } else {
             $this->waitingTitle = sprintf(_("Anmeldeliste (Losverfahren am %s)"), strftime('%x %R', $distribution_time));
             $this->semAdmissionEnabled = 1;
             $this->awaiting = $this->claiming;
             $this->waiting_type = 'claiming';
         }
     }
     // Set the infobox
     $this->createSidebar($filtered_members, $course);
     if ($this->is_locked && $this->is_tutor) {
         $lockdata = LockRules::getObjectRule($this->course_id);
         if ($lockdata['description']) {
             PageLayout::postMessage(MessageBox::info(formatLinks($lockdata['description'])));
         }
     }
     // Check for waitlist availability (influences available actions)
     // People can be moved to waitlist if waitlist available and no automatic moving up.
     if (!$sem->admission_disable_waitlist && $sem->admission_disable_waitlist_move) {
         $this->to_waitlist_actions = true;
     }
 }
Exemple #12
0
 /**
  * @return bool
  */
 function auth_validatelogin()
 {
     global $_language_path;
     //prevent replay attack
     if (!Seminar_Session::check_ticket(Request::option('login_ticket'))) {
         return false;
     }
     // check for direct link
     if (!$_SESSION['_language'] || $_SESSION['_language'] == "") {
         $_SESSION['_language'] = get_accepted_languages();
     }
     $_language_path = init_i18n($_SESSION['_language']);
     include 'config.inc.php';
     $this->auth["uname"] = Request::get('loginname');
     // This provides access for "loginform.ihtml"
     $this->auth["jscript"] = Request::get('resolution') != "";
     $this->auth['devicePixelRatio'] = Request::float('device_pixel_ratio');
     $check_auth = StudipAuthAbstract::CheckAuthentication(Request::get('loginname'), Request::get('password'));
     if ($check_auth['uid']) {
         $uid = $check_auth['uid'];
         if ($check_auth['need_email_activation'] == $uid) {
             $this->need_email_activation = $uid;
             $_SESSION['semi_logged_in'] = $uid;
             return false;
         }
         $user = $check_auth['user'];
         $this->auth["perm"] = $user->perms;
         $this->auth["uname"] = $user->username;
         $this->auth["auth_plugin"] = $user->auth_plugin;
         $this->auth_set_user_settings($user);
         Metrics::increment('core.login.succeeded');
         return $uid;
     } else {
         Metrics::increment('core.login.failed');
         $this->error_msg = $check_auth['error'];
         return false;
     }
 }
Exemple #13
0
 /**
  * Stud.IP markup for images, audio, video and flash-films
  */
 protected static function markupMedia($markup, $matches)
 {
     $tag = $matches[1];
     $params = explode(":", $matches[2]);
     $url = $matches[3];
     $whitespace = $matches[4];
     foreach ($params as $key => $param) {
         if ($param) {
             if (is_numeric($param)) {
                 $width = $param;
             } elseif (in_array($param, words("left center right"))) {
                 $position = $param;
             } elseif ($key === 0 && $param[0] === "=") {
                 $title = substr($param, 1);
             } elseif ($key < count($params) - 1) {
                 $virtual_url = $param . ":" . $params[$key + 1];
                 if (isURL($virtual_url)) {
                     $link = $virtual_url;
                 }
             }
         }
     }
     $format_strings = array('img' => '<img src="%s" style="%s" title="%s" alt="%s">', 'audio' => '<audio src="%s" style="%s" title="%s" alt="%s" controls></audio>', 'video' => '<video src="%s" style="%s" title="%s" alt="%s" controls></video>');
     $url = TransformInternalLinks($url);
     $pu = @parse_url($url);
     if (($pu['scheme'] == 'http' || $pu['scheme'] == 'https') && ($pu['host'] == $_SERVER['HTTP_HOST'] || $pu['host'] . ':' . $pu['port'] == $_SERVER['HTTP_HOST']) && strpos($pu['path'], $GLOBALS['CANONICAL_RELATIVE_PATH_STUDIP']) === 0) {
         $intern = true;
         $checkpath = urldecode(substr($pu['path'], strlen($GLOBALS['CANONICAL_RELATIVE_PATH_STUDIP'])));
         if (strpos($checkpath, '../') === false) {
             list($pu['first_target']) = explode('/', $checkpath);
         } else {
             $pu['first_target'] = false;
         }
     }
     $LOAD_EXTERNAL_MEDIA = Config::GetInstance()->getValue('LOAD_EXTERNAL_MEDIA');
     if ($intern && !in_array($pu['first_target'], array('sendfile.php', 'download', 'assets', 'pictures')) && !($pu['first_target'] === 'dispatch.php' && strpos($pu['path'], 'dispatch.php/document/download') !== false)) {
         return $matches[0];
     } elseif ((!$LOAD_EXTERNAL_MEDIA || $LOAD_EXTERNAL_MEDIA === 'deny') && !$intern) {
         return $matches[0];
     }
     //Mediaproxy?
     if (!$intern && $LOAD_EXTERNAL_MEDIA === "proxy" && Seminar_Session::is_current_session_authenticated()) {
         $media_url = $GLOBALS['ABSOLUTE_URI_STUDIP'] . 'dispatch.php/media_proxy?url=' . urlencode(decodeHTML(idna_link($url)));
     } else {
         $media_url = idna_link($url);
     }
     if ($tag === "flash") {
         $width = $width ? $width : 200;
         $height = round($width * 0.75);
         $flash_config = $width > 200 ? $GLOBALS['FLASHPLAYER_DEFAULT_CONFIG_MAX'] : $GLOBALS['FLASHPLAYER_DEFAULT_CONFIG_MIN'];
         $media = '<object type="application/x-shockwave-flash" id="FlashPlayer" data="' . Assets::url() . 'flash/player_flv.swf" width="' . $width . '" height="' . $height . '">
                     <param name="movie" value="' . Assets::url() . 'flash/player_flv.swf">
                     <param name="allowFullScreen" value="true">
                     <param name="FlashVars" value="flv=' . urlencode(decodeHTML($media_url)) . '&amp;startimage=' . $link . $flash_config . '">
                     <embed src="' . Assets::url() . 'flash/player_flv.swf" movie="$media_url" type="application/x-shockwave-flash" FlashVars="flv=' . urlencode(decodeHTML($media_url)) . '&amp;startimage=' . $link . $flash_config . '">
                     </object>';
     } else {
         $media = sprintf($format_strings[$tag], $media_url, isset($width) ? "width: " . $width . "px;" : "", $title, $title);
     }
     if ($tag === 'audio') {
         $random_id = 'audio-' . substr(md5(uniqid('audio', true)), -8);
         $media = str_replace('<audio ', '<audio id="' . $random_id . '" onerror="STUDIP.Audio.handle(this);" ', $media);
     }
     if ($link && $tag === "img") {
         $media = sprintf('<a href="%s"%s>%s</a>', $link, !isLinkIntern($link) ? ' target="_blank"' : "", $media);
     }
     if ($position) {
         $media = '<div style="text-align: ' . $position . '">' . $media . '</div>';
     }
     $media .= $whitespace;
     return $media;
 }
 /**
  * returns a random string token for XSRF prevention
  * the string is stored in the session
  *
  * @static
  * @return string
  */
 public static function get_ticket()
 {
     if (!self::$studipticket) {
         self::$studipticket = $_SESSION['last_ticket'] = md5(uniqid('studipticket', 1));
     }
     return self::$studipticket;
 }
Exemple #15
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</h1>
            <?endif;?>
                <p style="padding-bottom:25px;"><?php 
echo _("Bitte identifizieren Sie sich mit Benutzername und Passwort:");
?>
</p>

                <form style="padding-bottom:25px;" name="login" method="post" action="<?php 
echo URLHelper::getLink(Request::url(), array('cancel_login' => NULL));
?>
">
                    <?php 
echo CSRFProtection::tokenTag();
?>
                    <input type="hidden" name="login_ticket" value="<?php 
echo Seminar_Session::get_ticket();
?>
">
                    <input type="hidden" name="resolution"  value="">
                    <input type="hidden" name="device_pixel_ratio" value="1">
                    <table border="0" cellspacing="0" cellpadding="4">
                        <tbody>
                            <tr valign="top" align="left">
                                <td>
                                    <label for="loginname"><?php 
echo _('Benutzername:');
?>
</label>
                                </td>
                                <td>
                                    <input type="text" <?php