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- <?php
- /* For licensing terms, see /license.txt */
- /**
- * This file is responsible for passing requested documents to the browser.
- * Many functions updated and moved to lib/document.lib.php
- * @package chamilo.document
- */
- session_cache_limiter('none');
- //require_once '../inc/global.inc.php';
- $this_section = SECTION_COURSES;
- // Protection
- api_protect_course_script();
- if (!isset($_course)) {
- api_not_allowed(true);
- }
- $doc_url = $_GET['doc_url'];
- // Change the '&' that got rewritten to '///' by mod_rewrite back to '&'
- $doc_url = str_replace('///', '&', $doc_url);
- // Still a space present? it must be a '+' (that got replaced by mod_rewrite)
- $doc_url = str_replace(' ', '+', $doc_url);
- $doc_url = str_replace(array('../', '\\..', '\\0', '..\\'), array('', '', '', ''), $doc_url); //echo $doc_url;
- if (strpos($doc_url, '../') OR strpos($doc_url, '/..')) {
- $doc_url = '';
- }
- // Dealing with image included into survey: when users receive a link towards a
- // survey while not being authenticated on the platform.
- // The administrator should probably be able to disable this code through admin
- // inteface.
- $refer_script = isset($_SERVER["HTTP_REFERER"]) ? strrchr($_SERVER["HTTP_REFERER"], '/') : null;
- $sys_course_path = api_get_path(SYS_COURSE_PATH).$_course['path'].'/document';
- if (substr($refer_script, 0, 15) == '/fillsurvey.php') {
- $invitation = substr(strstr($refer_script, 'invitationcode='), 15);
- $course = strstr($refer_script, 'course=');
- $course = substr($course, 7, strpos($course, '&') - 7);
- include '../survey/survey.download.inc.php';
- $_course = check_download_survey($course, $invitation, $doc_url);
- $_course['path'] = $_course['directory'];
- } else {
- // If the rewrite rule asks for a directory, we redirect to the document explorer
- if (is_dir($sys_course_path.$doc_url)) {
- // Remove last slash if present
- // mod_rewrite can change /some/path/ to /some/path// in some cases, so clean them all off (René)
- while ($doc_url{$dul = strlen($doc_url) - 1} == '/') {
- $doc_url = substr($doc_url, 0, $dul);
- }
- // Group folder?
- $gid_req = ($_GET['gidReq']) ? '&gidReq='.Security::remove_XSS($_GET['gidReq']) : '';
- // Create the path
- $document_explorer = api_get_path(WEB_CODE_PATH).'document/document.php?curdirpath='.urlencode($doc_url).'&'.api_get_cidreq_params(Security::remove_XSS($_GET['cidReq'], 0, $gid_req));
- // Redirect
- header('Location: '.$document_explorer);
- exit;
- }
- }
- //Fixes swf upload problem in chamilo 1.8.x. When uploading a file with
- //the character "-" the filename was changed from "-" to "_" in the DB for no reason
- $path_info = pathinfo($doc_url);
- $fix_file_name = false;
- if (isset($path_info['extension']) && $path_info['extension'] == 'swf') {
- $fixed_url = str_replace('-', '_', $doc_url);
- $doc_id = DocumentManager::get_document_id(api_get_course_info(), $doc_url);
- if (!$doc_id) {
- $doc_id = DocumentManager::get_document_id(api_get_course_info(), $doc_url, '0');
- if (!$doc_id) {
- $fix_file_name = true;
- }
- }
- }
- if (Security::check_abs_path($sys_course_path.$doc_url, $sys_course_path.'/')) {
- $full_file_name = $sys_course_path.$doc_url;
- if ($fix_file_name) {
- $doc_url = $fixed_url;
- }
- // Check visibility of document and paths
- $is_visible = DocumentManager::is_visible($doc_url, $_course, api_get_session_id());
- //Document's slideshow thumbnails
- //correct $is_visible used in below and ??. Now the students can view the thumbnails too
- if (preg_match('/\.thumbs\/\./', $doc_url)) {
- $doc_url_thumbs = str_replace('.thumbs/.', '', $doc_url);
- $is_visible = DocumentManager::is_visible($doc_url_thumbs, $_course, api_get_session_id());
- }
- if (!api_is_allowed_to_edit() && !$is_visible) {
- Display::display_error_message(get_lang('ProtectedDocument'));//api_not_allowed backbutton won't work.
- exit; // You shouldn't be here anyway.
- }
- // Launch event
- Event::event_download($doc_url);
- $download = (!empty($_GET['dl']) ? true : false);
- $result = DocumentManager::file_send_for_download($full_file_name, $download);
- if ($result === false) {
- api_not_allowed(true);
- }
- }
- exit;
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