Chamilo is a learning management system focused on ease of use and accessibility
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chamilo-lms/main/document/show_content.php

109 lines
3.0 KiB

<?php
/* For licensing terms, see /license.txt */
/**
* @author jmontoya
*
* @package chamilo.document
*/
require_once __DIR__.'/../inc/global.inc.php';
// Protection
api_protect_course_script(true);
$noPHP_SELF = true;
$header_file = isset($_GET['file']) ? Security::remove_XSS($_GET['file']) : null;
$document_id = intval($_GET['id']);
$courseId = api_get_course_int_id();
$course_info = api_get_course_info_by_id($courseId);
$course_code = $course_info['code'];
$session_id = api_get_session_id();
if (empty($course_info)) {
api_not_allowed(true);
}
// Generate path
if (!$document_id) {
$document_id = DocumentManager::get_document_id($course_info, $header_file);
}
$document_data = DocumentManager::get_document_data_by_id(
$document_id,
$course_code,
true,
$session_id
);
if ($session_id != 0 && !$document_data) {
$document_data = DocumentManager::get_document_data_by_id(
$document_id,
$course_code,
true,
0
);
}
if (empty($document_data)) {
api_not_allowed(true);
}
$header_file = $document_data['path'];
$name_to_show = cut($header_file, 80);
$path_array = explode('/', str_replace('\\', '/', $header_file));
$path_array = array_map('urldecode', $path_array);
$header_file = implode('/', $path_array);
$file = Security::remove_XSS(urldecode($document_data['path']));
$file_root = $course_info['path'].'/document'.str_replace('%2F', '/', $file);
$file_url_sys = api_get_path(SYS_COURSE_PATH).$file_root;
$file_url_web = api_get_path(WEB_COURSE_PATH).$file_root;
if (!file_exists($file_url_sys)) {
api_not_allowed(true);
}
if (is_dir($file_url_sys)) {
api_not_allowed(true);
}
//fix the screen when you try to access a protected course through the url
$is_allowed_in_course = api_is_allowed_in_course();
if ($is_allowed_in_course == false) {
api_not_allowed(true);
}
// Check user visibility
$is_visible = DocumentManager::check_visibility_tree(
$document_id,
api_get_course_id(),
api_get_session_id(),
api_get_user_id(),
api_get_group_id()
);
if (!api_is_allowed_to_edit() && !$is_visible) {
api_not_allowed(true);
}
//TODO:clean all code
/* Main section */
header('Expires: Wed, 01 Jan 1990 00:00:00 GMT');
//header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT');
header('Last-Modified: Wed, 01 Jan 2100 00:00:00 GMT');
header('Cache-Control: no-cache, must-revalidate');
header('Pragma: no-cache');
$browser_display_title = 'Documents - '.Security::remove_XSS($_GET['cidReq']).' - '.$file;
$file_url_web = api_get_path(WEB_COURSE_PATH).$_course['path'].'/document'.$header_file.'?'.api_get_cidreq();
$pathinfo = pathinfo($header_file);
if ($pathinfo['extension'] == 'swf') {
$width = '83%';
$height = '83%';
} else {
$width = '100%';
$height = '100%';
}
echo '<iframe border="0" frameborder="0" scrolling="no" style="width:'.$width.'; height:'.$height.';background-color:#ffffff;" id="mainFrame" name="mainFrame" src="'.$file_url_web.'?'.api_get_cidreq().'&amp;rand='.mt_rand(1, 1000).'"></iframe>';