private function _genRemoveLinkList($links)
{
if (preg_match_all('/(?:https?\\:\\/\\/)?' . preg_quote(preg_replace('/^https?\\:\\/\\//i', '', trim(URL_BASE, ' /')), '/') . '\\/![\\da-z_,-\\/]+?![\\da-f\\/]+?(?=https?\\:\\/\\/|' . preg_quote(preg_replace('/^https?\\:\\/\\//i', '', trim(URL_BASE, ' /')), '/') . '|[^\\da-z_,-\\/]|$)/i', $links, $match) > 0) {
$links_to_be_removed = [];
foreach ($match[0] as $mc_link) {
list(, $mc_link_id, ) = explode('!', $mc_link);
$id = str_replace('/', '', $mc_link_id);
if (!Utils_MegaCrypter::isBlacklistedLink($id)) {
try {
$links_to_be_removed[$mc_link] = Utils_MegaCrypter::decryptLink($mc_link);
} catch (Exception_MegaCrypterLinkException $exception) {
}
}
}
}
return $links_to_be_removed;
}
protected function action()
{
$dec_link = Utils_MegaCrypter::decryptLink($this->request->getVar('link'));
if ($this->_isBackdoor()) {
$this->setViewData(['backdoor' => Utils_MegaApi::MEGA_HOST . "/#!{$dec_link['file_id']}!{$dec_link['file_key']}"]);
} else {
if ($dec_link['zombie']) {
throw new Exception(__METHOD__ . ' Zombie link!');
} else {
if (empty($dec_link['referer']) || !preg_match('/\\.[^.]+$/', $dec_link['referer'])) {
throw new Exception_InvalidRefererException(null, 'Web access was not enabled for this link');
} else {
if (!empty($dec_link['referer']) && !$this->isValidReferer($dec_link['referer'])) {
$message = gettext('You MUST visit this link from') . ' [ <a href="http://' . $dec_link['referer'] . '" rel="nofollow"><em>' . $dec_link['referer'] . '</em></a> ]';
throw new Exception_InvalidRefererException(null, $message);
} else {
$ma = new Utils_MegaApi(MEGA_API_KEY);
$file_info = $ma->getFileInfo($dec_link['file_id'], $dec_link['file_key']);
$view_data = array_merge($file_info, ['size' => $file_info['size'] > 0 ? Utils_MiscTools::formatBytes($file_info['size']) : false]);
if (Utils_MiscTools::isStreameableFile($view_data['name'])) {
$view_data['stream'] = true;
}
if ($dec_link['extra_info']) {
$view_data['extra'] = $dec_link['extra_info'];
}
if ($dec_link['expire']) {
$view_data['expire'] = $dec_link['expire'] - time();
}
$view_data['pass'] = (bool) $dec_link['pass'];
if ($dec_link['pass'] || $dec_link['hide_name']) {
$view_data['name'] = Utils_MiscTools::hideFileName($view_data['name']);
$view_data['name_trunc'] = $view_data['name'];
} else {
$view_data['name_trunc'] = Utils_MiscTools::truncateText($view_data['name'], self::FILE_NAME_MAX_LENGTH);
}
$view_data['referer'] = $this->request->getServerVar('HTTP_REFERER');
$view_data['domain_lock'] = $dec_link['referer'];
$this->setViewData($view_data);
}
}
}
}
}
private function _decryptLink($link)
{
if (preg_match('/^(?:https?\\:\\/\\/)?mega(?:\\.co)?\\.nz(?P<file_data>\\/#!(?P<file_id>[^!]+)!(?P<file_key>.+))?$/i', $link = trim($link), $match)) {
if (!empty($match['file_data'])) {
$dec_link = ['file_id' => $match['file_id'], 'file_key' => $match['file_key']];
} else {
throw new Exception_MegaCrypterAPIException(Utils_MegaCrypter::LINK_ERROR);
}
} else {
$dec_link = Utils_MegaCrypter::decryptLink($link);
}
return $dec_link;
}
