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141 lines
4.6 KiB
141 lines
4.6 KiB
<?php
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/* For licensing terms, see /license.txt */
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/**
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* This file allows creating new svg and png documents with an online editor.
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*
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* @package chamilo.document
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*
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* @author Juan Carlos Raña Trabado
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* @since 30/january/2011
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*/
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require_once '../inc/global.inc.php';
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require_once api_get_path(LIBRARY_PATH).'fileUpload.lib.php';
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require_once api_get_path(LIBRARY_PATH).'document.lib.php';
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api_protect_course_script();
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api_block_anonymous_users();
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if(!isset($_GET['title']) && !isset($_GET['type']) && !isset($_GET['image'])) {
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api_not_allowed();
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die();
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}
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if(!isset($_SESSION['paint_dir']) || !isset($_SESSION['whereami']) ){
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api_not_allowed();//
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die();
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}
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//pixlr return
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$filename=Security::remove_XSS($_GET['title']);//The user preferred file name of the image.
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$extension=Security::remove_XSS($_GET['type']);//The image type, "pdx", "jpg", "bmp" or "png".
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$urlcontents=Security::remove_XSS($_GET['image']);//A URL to the image on Pixlr.com server or the raw file post of the saved image.
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//make variables
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$title = Database::escape_string(str_replace('_',' ',$filename));
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$current_session_id = api_get_session_id();
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$groupId=$_SESSION['_gid'];
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$relativeUrlPath=$_SESSION['paint_dir'];
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$currentTool=$_SESSION['whereami'];
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$dirBaseDocuments = api_get_path(SYS_COURSE_PATH).$_course['path'].'/document';
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$saveDir=$dirBaseDocuments.$_SESSION['paint_dir'];
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$contents = file_get_contents($urlcontents);
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//Verify that the URL is pointing to a file @ pixlr.com
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if (strpos($urlcontents, "pixlr.com") == 0){
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echo "Invalid referrer";
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exit;
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}
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//Verify that the file is an image
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$headers = get_headers($urlcontents, 1);
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$content_type = explode("/", $headers['Content-Type']);
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if ($content_type[0] != "image"){
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echo "Invalid file type";
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exit;
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}
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//a bit title security
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$filename = addslashes(trim($filename));
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$filename = Security::remove_XSS($filename);
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$filename = replace_dangerous_char($filename, 'strict');
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$filename = disable_dangerous_file($filename);
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// a bit extension security
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if($extension!= 'jpg' && $extension!= 'png' && $extension!= 'bmp' && $extension!= 'pxd'){
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die();
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}
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//TODO: a bit mime security
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//path, file and title
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$paintFileName = $filename.'.'.$extension;
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$title = $title.'.'.$extension;
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if($currentTool=='document/createpaint'){
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//check save as and prevent rewrite an older file with same name
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if (0 != $groupId){
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$group_properties = GroupManager :: get_group_properties($groupId);
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$groupPath = $group_properties['directory'];
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}
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else{
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$groupPath ='';
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}
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if (file_exists($saveDir.'/'.$filename.'.'.$extension)){
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$i = 1;
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while (file_exists($saveDir.'/'.$filename.'_'.$i.'.'.$extension)) $i++;
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$paintFileName = $filename . '_' . $i . '.'.$extension;
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$title = $filename . '_' . $i . '.'.$extension;
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}
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//
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$documentPath = $saveDir.'/'.$paintFileName;
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//add new document to disk
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file_put_contents( $documentPath, $contents );
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//add document to database
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$doc_id = add_document($_course, $relativeUrlPath.'/'.$paintFileName, 'file', filesize($documentPath), $title);
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api_item_property_update($_course, TOOL_DOCUMENT, $doc_id, 'DocumentAdded', $_user['user_id'], $groupId, null, null, null, $current_session_id);
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}elseif($currentTool=='document/editpaint'){
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$documentPath = $saveDir.'/'.$paintFileName;
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//add new document to disk
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file_put_contents( $documentPath, $contents );
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//check path
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if(!isset($_SESSION['paint_file'])){
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api_not_allowed();
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die();
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}
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if($_SESSION['paint_file']==$paintFileName){
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$document_id = DocumentManager::get_document_id($_course, $relativeUrlPath.'/'.$paintFileName);
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update_existing_document($_course, $document_id, filesize($documentPath), null);
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api_item_property_update($_course, TOOL_DOCUMENT, $document_id, 'DocumentUpdated', $_user['user_id'], $groupId, null, null, null, $current_session_id);
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}else{
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//add a new document
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$doc_id = add_document($_course, $relativeUrlPath.'/'.$paintFileName, 'file', filesize($documentPath), $title);
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api_item_property_update($_course, TOOL_DOCUMENT, $doc_id, 'DocumentAdded', $_user['user_id'], $groupId, null, null, null, $current_session_id);
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}
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}
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//Clean sessions and return to Chamilo file list
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unset($_SESSION['paint_dir']);
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unset($_SESSION['paint_file']);
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unset($_SESSION['whereami']);
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if (!isset($_SESSION['exit_pixlr'])){
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$location=api_get_path(WEB_CODE_PATH).'document/document.php';
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echo '<script>top.location.href="'.$location.'"</script>';
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api_not_allowed(true);
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}
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else{
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$location=api_get_path(WEB_CODE_PATH).'document/document.php?curdirpath='.Security::remove_XSS($_SESSION['exit_pixlr']);
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echo '<script>top.location.href="'.$location.'"</script>';
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unset($_SESSION['exit_pixlr']);
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}
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?>
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