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utils.php
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<?php
require_once('config.php');
function replaceFirstOccurence($searchStr, $replacementStr, $sourceStr) {
return (false !== ($pos = strpos($sourceStr, $searchStr))) ? substr_replace($sourceStr, $replacementStr, $pos, strlen($searchStr)) : $sourceStr;
}
# Echos the number of remaining spots for a event e
function getNumberOfRemainingSpots($E) {
if($E['max_participants']) {
$filepath = $E['path'];
$HEADER_LINE_COUNT = 1;
if(file_exists($filepath)) {
$file = file( $filepath, FILE_SKIP_EMPTY_LINES);
$spots = $E['max_participants'] - (count($file) - $HEADER_LINE_COUNT);
if($spots <= 0) {
$spots = 0;
}
return $spots;
}
else {
return $E['max_participants'];
}
}
}
function writeHeader($file, $E) {
clearstatcache();
if(!filesize($E['path'])){
if($E['course_required'])
$headers = array("name", "mail", "studiengang", "abschluss", "semester");
else
$headers = array("name", "mail");
if($E['food'])
$headers[] = "essen";
if($E['name'] === "Ersti WE")
$headers[] = "fruehstueck";
fputcsv($file, $headers);
}
}
function sendMail($recipient, $E) {
$subject = "Registrierung zu {$E['name']}";
$msg = "Du hast dich erfolgreich zu {$E['name']} angemeldet.\n";
$headers = "From:" . $SENDER_NAME . " <" . $SENDER_EMAIL . ">";
mail($recipient, $subject, $msg, $headers);
}
# Processes a registration
function register($E){
$name = filter_input(INPUT_POST, 'name', FILTER_SANITIZE_SPECIAL_CHARS);
$mail = filter_input(INPUT_POST, 'mail', FILTER_SANITIZE_EMAIL);
if($E['course_required']){
$studiengang = filter_input(INPUT_POST, 'studiengang', FILTER_SANITIZE_ENCODED);
$abschluss = filter_input(INPUT_POST, 'abschluss', FILTER_SANITIZE_ENCODED);
$semester =filter_input(INPUT_POST, 'semester', FILTER_SANITIZE_NUMBER_INT);
}
if($E['food'])
$essen = filter_input(INPUT_POST, 'essen', FILTER_SANITIZE_ENCODED);
if($E['name'] === "Ersti WE")
$fruehstueck = filter_input(INPUT_POST, 'fruehstueck', FILTER_SANITIZE_ENCODED);
if(empty($mail) || empty($name) || ($E['course_required'] && (empty($studiengang) || empty($semester) || empty($abschluss)))){
echo "<div class='block error'>Fehler. Du hast nicht alle erforderlichen Daten angegeben.</div>";
return;
}
// already registered
if(strpos(file_get_contents($E['path']), $mail) !== false){
echo "<div class='block error'>Du bist zu dieser Veranstaltung bereits angemeldet.</div>";
return;
}
$data = array();
array_push($data, $name);
array_push($data, $mail);
if($E['course_required']){
array_push($data, $studiengang);
array_push($data, $abschluss);
array_push($data, $semester);
}
if($E['food']){
array_push($data, $essen);
}
if($E['name'] === "Ersti WE")
array_push($data, $fruehstueck);
$file = fopen($E['path'], "a");
if($file === false){
echo "<div class='block error'>Fehler beim Schreiben der Daten<br>Bitte probiere es noch einmal oder kontaktiere <a href='mailto:{$CONFIG_CONTACT}'>{$CONFIG_CONTACT}</a></div>";
return;
}
// add CSV headers if file doesn't exist yet
// check if file is empty, because we can't check if it exists because it was opened with fopen()
writeHeader($file, $E);
fputcsv($file, $data);
fclose($file);
sendMail($mail, $E);
echo "<div class='block info'>Du hast dich erfolgreich zu dieser Veranstaltung angemeldet! Du erhältst einige Tage vor dem Event eine Mail.</div>";
}
function showRegistration($E){
global $CONFIG_CONTACT;
// override the 72 + 2 hour limit for certain events
if($E['registration_override']) {
if(time() >= $E['end_of_registration']) {
echo "<div class='block error'>Die Anmeldephase für diese Veranstaltung ist vorüber.<br>
Du erhältst in Kürze eine Mail</div>";
return;
}
}
else {
// return if the event is only 72 + 2 hours ahead, i.e. don't show the registration anymore
if((time() + (86400 * 3) + (3600 * 2)) >= $E["uts"]){
echo "<div class='block error'>Die Anmeldephase für diese Veranstaltung ist vorüber.<br>
Du erhältst in Kürze eine Mail</div>";
return;
}
}
if($E['cancelled']){
echo "<div class = 'block error'> {$E['name']} fällt leider aus.<br>
Die Gründe sind entweder offensichtlich oder bei der Fachschaft unter <a href='mailto:{$CONFIG_CONTACT}'> {$CONFIG_CONTACT}</a> zu erfragen.</div>";
return;
}
if($E['active']){
// return if the maximum number of participants has been reached
if(getNumberOfRemainingSpots($E) == 0) {
echo "<div class = 'block error'>Für diese Veranstaltung sind bereits alle Plätze vergeben.</div>";
return;
}
echo '
<form method = "post" action = "#">
Dein Name (Vor- und Nachname): <br>
<input type="text" id="form-name" name="name" required size="30"><br><br>
Mail-Adresse:<br>
<input type="email" id="form-mail" name="mail" required size="30"><br><br>
';
echo $E['course_required']?
'Studiengang:<br>
<label><input type="radio" class="form-studiengang" name="studiengang" value="Informatik" required> Informatik</label><br>
<label><input type="radio" class="form-studiengang" name="studiengang" value="Lehramt"> Lehramt</label><br>
<label><input type="radio" class="form-studiengang" name="studiengang" value="Bioinformatik"> Bioinformatik</label><br>
<label><input type="radio" class="form-studiengang" name="studiengang" value="Medizininformatik"> Medizininformatik</label><br>
<label><input type="radio" class="form-studiengang" name="studiengang" value="Medieninformatik"> Medieninformatik</label><br>
<label><input type="radio" class="form-studiengang" name="studiengang" value="Machine Learning"> Machine Learning</label><br>
<label><input type="radio" class="form-studiengang" name="studiengang" value="Kognitionswissenschaft"> Kognitionswissenschaft</label><br>
<label><input type="radio" class="form-studiengang" name="studiengang" value="Nebenfach" required> Nebenfach<br></label><br>
Abschluss:<br>
<label><input type="radio" class="form-abschluss" name="abschluss" value="Bachelor" required> Bachelor</label><br>
<label><input type="radio" class="form-abschluss" name="abschluss" value="Master"> Master</label><br><br>
Semester:<br>
<label><input type="radio" class="form-semester" name="semester" value="1" required> 1</label> <br>
<label><input type="radio" class="form-semester" name="semester" value="2"> 2</label> <br>
<label><input type="radio" class="form-semester" name="semester" value="3"> 3</label> <br>
<label><input type="radio" class="form-semester" name="semester" value="viele"> viele <label/><br>'
: '';
echo ($E['food']) ?
'<br>Essen:<br>
<label><input type="radio" class="form-essen" name="essen" value="keine Präferenzen" required> keine Präferenzen</label><br>
<label><input type="radio" class="form-essen" name="essen" value="Vegetarisch"> Vegetarisch</label><br>
<label><input type="radio" class="form-essen" name="essen" value="Vegan"> Vegan</label><br>
<label><input type="radio" class="form-essen" name="essen" value="kein Schwein"> kein Schwein</label><br>'
: '';
echo ($E['breakfast']) ?
'<br>Frühstück:<br>
<label><input type="radio" class="form-fruehstueck" name="fruehstueck" value="keine Präferenzen" required> keine Präferenzen</label> <br>
<label><input type="radio" class="form-fruehstueck" name="fruehstueck" value="süß"> süß</label><br>
<label><input type="radio" class="form"fruehstueck" name="fruehstueck" value="salzig"> salzig<label/><br>'
: '';
echo '
<input type="submit" value="Senden" onclick="saveFormValues()">
</form>
<script type="text/javascript" src="../js/saveFormValues.js"></script>
';
}
}
?>