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