function format_data($data, $id = null)
{
/*{{{*/
list($url, $text) = split_data($data);
if ($url) {
// Mobile Device PDF: Das können wir als JPG ausliefern!
if ($id && preg_match('/\\.(?:pdf|ps)$/i', $url) && is_mobile()) {
$url = 'image.php?data_id=' . htmlspecialchars($id);
}
$url = remove_authentication_from_urls($url);
return '<a class="exercise" href="' . htmlspecialchars($url) . '">' . htmlspecialchars($text ? $text : basename($url)) . '</a>';
} else {
return htmlspecialchars($text);
}
}
?>
</id>
<title><?php
echo htmlspecialchars($descs[$exercise['feed_id']]);
?>
- <?php
echo strip_tags(format_data($exercise['data'], $exercise['id']));
?>
</title>
<summary type="html">
<?php
echo htmlspecialchars(format_data($exercise['data'], $exercise['id']));
?>
</summary>
<?php
list($url, $text) = split_data($exercise['data']);
if ($url) {
?>
<link title="<?php
echo htmlspecialchars(trim($text));
?>
" href="<?php
echo htmlspecialchars($url);
?>
" rel="alternate" />
<?php
} else {
?>
<content type="text"><?php
echo htmlspecialchars($text);
?>
$contents = load_url($_POST['url']);
} catch (Exception $e) {
$error .= $e->getMessage();
}
$contents = html_entity_decode($contents, ENT_COMPAT, "utf-8");
preg_match_all($_POST['search'], $contents, $matches, PREG_SET_ORDER);
restore_error_handler();
if (preg_last_error() != PREG_NO_ERROR) {
$error = "Regulärer Ausdruck ungültig.";
} else {
$output = '';
foreach ($matches as $match) {
$sheet = preg_replace_callback('/\\$([0-9]+)/', function ($vmatch) use($match) {
return $match[$vmatch[1]];
}, $_POST['exercise']);
list($sheet_url, $sheet_text) = split_data($sheet);
$sheet_out = format_data($sheet);
if ($sheet_url) {
// Prüfen, ob die URL existiert
try {
check_if_url_changed($sheet_url, false);
} catch (Exception $ignore) {
$sheet_out .= ' (Die Datei wurde nicht gefunden)';
}
}
$output .= '<li>' . $sheet_out . '</li>';
}
}
} else {
$error .= 'Ungültiger Regulärer Ausdruck.';
}
function split_data($json, $db, &$json_updated, &$need_update, &$excludes)
{
if (isset($json)) {
foreach ($json as $k => $v) {
if (is_array($v)) {
$db[$k] = isset($db[$k]) ? $db[$k] : null;
if (in_array($k, $excludes)) {
if (isset($db[$k])) {
$json_updated[$k] = $db[$k];
}
continue;
}
split_data($v, $db[$k], $json_updated[$k], $need_update, $excludes);
} else {
if (isset($db[$k])) {
$json_updated[$k] = $db[$k];
} else {
$json_updated[$k] = $v;
if (!empty($v)) {
$need_update = true;
}
}
}
}
}
}
<?php
require "system.php";
set_time_limit(30);
// Cachen von gespeicherten Übungen
if (isset($_GET['data_id'])) {
$data = $database->query('SELECT data FROM data WHERE id = ' . intval($_GET['data_id']))->fetchColumn();
list($url, $text) = split_data($data);
if (!$url) {
header("HTTP/1.1 404 Not found");
die('<DOCTYPE HTML><h1>Not found</h1>');
}
try {
$_GET['cache_id'] = cache_file($url, false, true, 3600 * 24);
} catch (Exception $e) {
// Geht anscheinend nicht - dann leiten wir halt weiter auf das Original
header('Location: ' . $url);
die;
}
}
// Daten direkt aus dem Cache laden
$cache_id = $_GET['cache_id'];
$cache_file = $cache_dir . basename($cache_id);
$query = $database->prepare('SELECT * FROM cache WHERE id = ?');
$query->execute(array($cache_id));
$cache_object = $query->fetch(PDO::FETCH_OBJ);
if (!$cache_object || !file_exists($cache_file)) {
header("HTTP/1.1 404 Not found");
die('<DOCTYPE HTML><h1>Not found</h1>');
}
header('Content-disposition: attachment; filename="' . addcslashes($cache_object->filename, '"') . '"');
require 'system.php';
// Aufrufe in zu kurzen Abständen unterbinden (irgendein Bug in machen Browsern)
if (isset($_SESSION['latest_combine_call']) && $_SESSION['latest_combine_call'] + 5 > time()) {
gotop("index.php");
}
$_SESSION['latest_combine_call'] = time();
$data_ids = array_map(intval, $_POST['d']);
$combine = $database->query('SELECT data FROM data WHERE id IN (' . implode(', ', $data_ids) . ')');
if (is_dir('pdftk')) {
$execute = 'LD_LIBRARY_PATH=pdftk pdftk/pdftk ';
} else {
$execute = 'pdftk ';
}
$final_cache_id = '';
foreach ($combine as $data) {
list($url, $title) = split_data($data['data']);
if (!$url) {
continue;
}
if (preg_match('/cache_id=([^&]+)/', $url, $match)) {
$cache_id = basename($match[1]);
} else {
try {
$cache_id = cache_file($url, false, true, 3600 * 24);
} catch (Exception $e) {
status_message("Dieser Dienst funktioniert nur mit PDF-Dateien");
gotop("index.php");
}
}
if (substr(get_mime_type($cache_dir . $cache_id), 0, 15) != 'application/pdf') {
status_message("Dieser Dienst funktioniert nur mit PDF-Dateien");
<?php
require "system.php";
if (system("which convert 2>&1 > /dev/null") != 0) {
status_message("Dieser Dienst steht nur zur Verfügung, wenn ImageMagick auf dem Serversystem installiert ist");
gotop("index.php");
}
set_time_limit(0);
if (!isset($_GET['data_id'])) {
header('HTTP/1.1 404 Not found');
die("<DOCTYPE HTML><h1>File not found</h1>");
}
$data = $database->query('SELECT data FROM data WHERE id = ' . intval($_GET['data_id']))->fetchColumn();
list($image, $text) = split_data($data);
if (!preg_match('#^https?://#i', $image)) {
header('HTTP/1.1 404 Not found');
die("<DOCTYPE HTML><h1>File not found</h1>");
}
if (preg_match('#\\.([^\\.]+)$#', $image, $extension)) {
$extension = $extension[1];
} else {
$extension = 'pdf';
}
$hash = sha1('img-' . $image);
$cache_file = $cache_dir . $hash;
$cache_exists = file_exists($cache_file);
try {
$data = load_url($image, false, $cache_exists ? filemtime($cache_file) : false);
} catch (Exception $e) {
// Geht anscheinend nicht - dann leiten wir halt weiter auf das Original.
header('Location: ' . $image);
