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926 lines
45 KiB
926 lines
45 KiB
<?php
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/* For licensing terms, see /license.txt */
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/**
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* Defines the scorm class, which is meant to contain the scorm items (nuclear elements)
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* @package chamilo.learnpath.scorm
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* @author Yannick Warnier <ywarnier@beeznest.org>
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*/
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/**
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* Includes
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*/
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require_once 'scormItem.class.php';
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require_once 'scormMetadata.class.php';
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require_once 'scormOrganization.class.php';
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require_once 'scormResource.class.php';
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/**
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* Defines the "scorm" child of class "learnpath"
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* @package chamilo.learnpath
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*/
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class scorm extends learnpath {
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public $manifest = array();
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public $resources = array();
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public $resources_att = array();
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public $organizations = array();
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public $organizations_att = array();
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public $metadata = array();
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public $idrefs = array(); // Will hold the references to resources for each item ID found.
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public $refurls = array(); // For each resource found, stores the file url/uri.
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public $subdir = ''; // Path between the scorm/ directory and the imsmanifest.xml e.g. maritime_nav/maritime_nav. This is the path that will be used in the lp_path when importing a package.
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public $items = array();
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public $zipname = ''; // Keeps the zipfile safe for the object's life so that we can use it if no title avail.
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public $lastzipnameindex = 0; // Keeps an index of the number of uses of the zipname so far.
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public $manifest_encoding = 'UTF-8';
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public $debug = 0;
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/**
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* Class constructor. Based on the parent constructor.
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* @param string Course code
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* @param integer Learnpath ID in DB
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* @param integer User ID
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*/
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function __construct($course_code = null, $resource_id = null, $user_id = null) {
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if ($this->debug > 0) { error_log('New LP - scorm::scorm('.$course_code.','.$resource_id.','.$user_id.') - In scorm constructor', 0); }
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if (!empty($course_code) && !empty($resource_id) && !empty($user_id)) {
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parent::__construct($course_code, $resource_id, $user_id);
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} else {
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// Do nothing but still build the scorm object.
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}
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}
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/**
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* Opens a resource
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* @param integer Database ID of the resource
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*/
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function open($id) {
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if ($this->debug > 0) { error_log('New LP - scorm::open() - In scorm::open method', 0); }
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// redefine parent method
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}
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/**
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* Possible SCO status: see CAM doc 2.3.2.5.1: passed, completed, browsed, failed, not attempted, incomplete
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*/
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/**
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* Prerequisites: see CAM doc 2.3.2.5.1 for pseudo-code
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*/
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/**
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* Parses an imsmanifest.xml file and puts everything into the $manifest array
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* @param string Path to the imsmanifest.xml file on the system. If not defined, uses the base path of the course's scorm dir
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* @return array Structured array representing the imsmanifest's contents
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*/
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function parse_manifest($file = '') {
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if ($this->debug > 0) { error_log('In scorm::parse_manifest('.$file.')', 0); }
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if (empty($file)) {
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// Get the path of the imsmanifest file.
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}
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if (is_file($file) && is_readable($file) && ($xml = @file_get_contents($file))) {
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// Parsing using PHP5 DOMXML methods.
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if ($this->debug > 0) { error_log('In scorm::parse_manifest() - Parsing using PHP5 method', 0); }
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//$this->manifest_encoding = api_detect_encoding_xml($xml); // This is the usual way for reading the encoding.
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$this->manifest_encoding = self::detect_manifest_encoding($xml); // This method reads the encoding, it tries to be correct even in cases of wrong or missing encoding declarations.
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$xml = api_utf8_encode_xml($xml, $this->manifest_encoding); // UTF-8 is supported by DOMDocument class, this is for sure.
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$doc = new DOMDocument();
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$res = @$doc->loadXML($xml);
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if ($res === false) {
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if ($this->debug > 0) { error_log('New LP - In scorm::parse_manifest() - Exception thrown when loading '.$file.' in DOMDocument', 0); }
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// Throw exception?
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return null;
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}
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if ($this->debug > 1) { error_log('New LP - Called (encoding:'.$doc->xmlEncoding.' - saved: '.$this->manifest_encoding.')', 0); }
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$root = $doc->documentElement;
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if ($root->hasAttributes()) {
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$attributes = $root->attributes;
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if ($attributes->length !== 0) {
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foreach ($attributes as $attrib) {
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// <manifest> element attributes
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$this->manifest[$attrib->name] = $attrib->value;
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}
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}
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}
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$this->manifest['name'] = $root->tagName;
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if ($root->hasChildNodes()) {
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$children = $root->childNodes;
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if ($children->length !== 0) {
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foreach ($children as $child) {
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// <manifest> element children (can be <metadata>, <organizations> or <resources> )
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if ($child->nodeType == XML_ELEMENT_NODE) {
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switch ($child->tagName) {
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case 'metadata':
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// Parse items from inside the <metadata> element.
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$this->metadata = new scormMetadata('manifest',$child);
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break;
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case 'organizations':
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// Contains the course structure - this element appears 1 and only 1 time in a package imsmanifest. It contains at least one 'organization' sub-element.
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$orgs_attribs = $child->attributes;
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foreach ($orgs_attribs as $orgs_attrib) {
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// Attributes of the <organizations> element.
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if ($orgs_attrib->nodeType == XML_ATTRIBUTE_NODE) {
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$this->manifest['organizations'][$orgs_attrib->name] = $orgs_attrib->value;
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}
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}
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$orgs_nodes = $child->childNodes;
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$i = 0;
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$found_an_org = false;
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foreach ($orgs_nodes as $orgnode) {
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// <organization> elements - can contain <item>, <metadata> and <title>
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// Here we are at the 'organization' level. There might be several organization tags but
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// there is generally only one.
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// There are generally three children nodes we are looking for inside and organization:
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// -title
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// -item (may contain other item tags or may appear several times inside organization)
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// -metadata (relative to the organization)
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$found_an_org = false;
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switch ($orgnode->nodeType) {
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case XML_TEXT_NODE:
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// Ignore here.
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break;
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case XML_ATTRIBUTE_NODE:
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// Just in case there would be interesting attributes inside the organization tag. There shouldn't
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// as this is a node-level, not a data level.
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//$manifest['organizations'][$i][$orgnode->name] = $orgnode->value;
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//$found_an_org = true;
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break;
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case XML_ELEMENT_NODE:
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// <item>, <metadata> or <title> (or attributes)
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$organizations_attributes = $orgnode->attributes;
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foreach ($organizations_attributes as $orgs_attr) {
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$this->organizations_att[$orgs_attr->name] = $orgs_attr->value;
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}
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$oOrganization = new scormOrganization('manifest', $orgnode, $this->manifest_encoding);
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if ($oOrganization->identifier != '') {
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$name = $oOrganization->get_name();
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if (empty($name)) {
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// If the org title is empty, use zip file name.
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$myname = $this->zipname;
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if ($this->lastzipnameindex != 0) {
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$myname = $myname + $this->lastzipnameindex;
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$this->lastzipnameindex++;
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}
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$oOrganization->set_name($this->zipname);
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}
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$this->organizations[$oOrganization->identifier] = $oOrganization;
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}
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break;
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}
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}
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break;
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case 'resources':
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if ($child->hasAttributes()) {
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$resources_attribs = $child->attributes;
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foreach ($resources_attribs as $res_attr) {
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if ($res_attr->type == XML_ATTRIBUTE_NODE) {
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$this->manifest['resources'][$res_attr->name] = $res_attr->value;
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}
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}
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}
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if ($child->hasChildNodes()) {
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$resources_nodes = $child->childNodes;
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$i = 0;
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foreach ($resources_nodes as $res_node) {
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$oResource = new scormResource('manifest', $res_node);
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if ($oResource->identifier != '') {
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$this->resources[$oResource->identifier] = $oResource;
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$i++;
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}
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}
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}
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// Contains links to physical resources.
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break;
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case 'manifest':
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// Only for sub-manifests.
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break;
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}
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}
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}
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}
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}
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unset($doc);
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// End parsing using PHP5 DOMXML methods.
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} else {
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if ($this->debug > 1) { error_log('New LP - Could not open/read file '.$file, 0); }
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$this->set_error_msg("File $file could not be read");
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return null;
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}
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// TODO: Close the DOM handler.
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return $this->manifest;
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}
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/**
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* Detects the encoding of a given manifest (a xml-text).
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* It is possible the encoding of the manifest to be wrongly declared or
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* not to be declared at all. The proposed method tries to resolve these problems.
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* @param string $xml The input xml-text.
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* @return string The detected value of the input xml.
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*/
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private function detect_manifest_encoding(& $xml) {
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if (api_is_valid_utf8($xml)) {
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return 'UTF-8';
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}
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if (preg_match(_PCRE_XML_ENCODING, $xml, $matches)) {
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$declared_encoding = api_refine_encoding_id($matches[1]);
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} else {
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$declared_encoding = '';
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}
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if (!empty($declared_encoding) && !api_is_utf8($declared_encoding)) {
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return $declared_encoding;
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}
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$test_string = '';
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if (preg_match_all('/<langstring[^>]*>(.*)<\/langstring>/m', $xml, $matches)) {
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$test_string = implode("\n", $matches[1]);
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unset($matches);
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}
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if (preg_match_all('/<title[^>]*>(.*)<\/title>/m', $xml, $matches)) {
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$test_string .= "\n".implode("\n", $matches[1]);
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unset($matches);
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}
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if (empty($test_string)) {
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$test_string = $xml;
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}
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return api_detect_encoding($test_string);
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}
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/**
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* Import the scorm object (as a result from the parse_manifest function) into the database structure
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* @param string Unique course code
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* @return bool Returns -1 on error
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*/
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function import_manifest($course_code, $use_max_score = 1) {
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if ($this->debug > 0) { error_log('New LP - Entered import_manifest('.$course_code.')', 0); }
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$sql = "SELECT * FROM ".Database::get_main_table(TABLE_MAIN_COURSE)." WHERE code='$course_code'";
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$res = Database::query($sql);
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if (Database::num_rows($res) < 1) { error_log('Database for '.$course_code.' not found '.__FILE__.' '.__LINE__, 0); return -1; }
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$row = Database::fetch_array($res);
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$dbname = $row['db_name'];
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$course_id = $row['id'];
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// Get table names.
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$new_lp = Database::get_course_table(TABLE_LP_MAIN, $dbname);
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$new_lp_item = Database::get_course_table(TABLE_LP_ITEM, $dbname);
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$use_max_score = intval($use_max_score);
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foreach ($this->organizations as $id => $dummy) {
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$is_session = api_get_session_id();
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$is_session != 0 ? $session_id = $is_session : $session_id = 0;
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$oOrganization =& $this->organizations[$id];
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// Prepare and execute insert queries:
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// -for learnpath
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// -for items
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// -for views?
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$get_max = "SELECT MAX(display_order) FROM $new_lp";
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$res_max = Database::query($get_max);
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$dsp = 1;
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if (Database::num_rows($res_max) > 0) {
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$row = Database::fetch_array($res_max);
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$dsp = $row[0] + 1;
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}
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$myname = $oOrganization->get_name();
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$myname = api_utf8_decode($myname);
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$sql = "INSERT INTO $new_lp (c_id, lp_type, name, ref, description, path, force_commit, default_view_mod, default_encoding, js_lib,display_order, session_id, use_max_score)" .
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"VALUES ($course_id , 2,'".$myname."', '".$oOrganization->get_ref()."','','".$this->subdir."', 0, 'embedded', '".$this->manifest_encoding."', 'scorm_api.php', $dsp, $session_id, $use_max_score)";
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if ($this->debug > 1) { error_log('New LP - In import_manifest(), inserting path: '. $sql, 0); }
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$res = Database::query($sql);
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$lp_id = Database::insert_id();
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$this->lp_id = $lp_id;
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// Insert into item_property.
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api_item_property_update(api_get_course_info($course_code), TOOL_LEARNPATH, $this->lp_id, 'LearnpathAdded', api_get_user_id());
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api_item_property_update(api_get_course_info($course_code), TOOL_LEARNPATH, $this->lp_id, 'visible', api_get_user_id());
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// Now insert all elements from inside that learning path.
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// Make sure we also get the href and sco/asset from the resources.
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$list = $oOrganization->get_flat_items_list();
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$parents_stack = array(0);
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$parent = 0;
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$previous = 0;
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$level = 0;
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foreach ($list as $item) {
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if ($item['level'] > $level) {
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// Push something into the parents array.
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array_push($parents_stack, $previous);
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$parent = $previous;
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} elseif ($item['level'] < $level) {
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$diff = $level - $item['level'];
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// Pop something out of the parents array.
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for ($j = 1; $j <= $diff; $j++) {
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$outdated_parent = array_pop($parents_stack);
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}
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$parent = array_pop($parents_stack); // Just save that value, then add it back.
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array_push($parents_stack,$parent);
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}
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$path = '';
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$type = 'dir';
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if (isset($this->resources[$item['identifierref']])) {
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$oRes =& $this->resources[$item['identifierref']];
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$path = @$oRes->get_path();
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if (!empty($path)) {
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$temptype = $oRes->get_scorm_type();
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if (!empty($temptype)) {
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$type = $temptype;
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}
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}
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}
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$level = $item['level'];
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$field_add = '';
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$value_add = '';
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if (!empty($item['masteryscore'])) {
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$field_add .= 'mastery_score, ';
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$value_add .= $item['masteryscore'].',';
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}
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if (!empty($item['maxtimeallowed'])) {
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$field_add .= 'max_time_allowed, ';
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$value_add .= "'".$item['maxtimeallowed']."',";
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}
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$title = Database::escape_string($item['title']);
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$title = api_utf8_decode($title);
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$max_score = Database::escape_string($item['max_score']);
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if ($max_score == 0 || is_null($max_score) || $max_score == '') {
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//If max score is not set The use_max_score parameter is check in order to use 100 (chamilo style) or '' (strict scorm)
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if ($use_max_score) {
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$max_score = "'100'";
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} else {
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$max_score = "NULL";
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}
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} else {
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//Otherwise save the max score
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$max_score = "'$max_score'";
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}
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$identifier = Database::escape_string($item['identifier']);
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$prereq = Database::escape_string($item['prerequisites']);
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$sql_item = "INSERT INTO $new_lp_item " .
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"(c_id, lp_id,item_type,ref,title," .
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"path,min_score,max_score, $field_add" .
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"parent_item_id,previous_item_id,next_item_id," .
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"prerequisite,display_order,launch_data," .
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"parameters) " .
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"VALUES " .
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"($course_id, $lp_id, '$type','".$identifier."','".$title."'," .
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"'$path',0,$max_score, $value_add" .
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"$parent, $previous, 0, " .
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"'$prereq', ".$item['rel_order'] .", '".$item['datafromlms']."'," .
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"'".$item['parameters']."'" .
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")";
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$res_item = Database::query($sql_item);
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if ($this->debug > 1) { error_log('New LP - In import_manifest(), inserting item : '.$sql_item.' : '.mysql_error(), 0); }
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$item_id = Database::insert_id();
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// Now update previous item to change next_item_id.
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$upd = "UPDATE $new_lp_item SET next_item_id = $item_id WHERE id = $previous";
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$upd_res = Database::query($upd);
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// Update previous item id.
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$previous = $item_id;
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// Code for indexing, now only index specific fields like terms and the title.
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if (!empty($_POST['index_document'])) {
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require_once api_get_path(LIBRARY_PATH).'search/DokeosIndexer.class.php';
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require_once api_get_path(LIBRARY_PATH).'search/IndexableChunk.class.php';
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require_once api_get_path(LIBRARY_PATH).'specific_fields_manager.lib.php';
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$di = new DokeosIndexer();
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isset($_POST['language']) ? $lang = Database::escape_string($_POST['language']) : $lang = 'english';
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$di->connectDb(NULL, NULL, $lang);
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$ic_slide = new IndexableChunk();
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$ic_slide->addValue('title', $title);
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$specific_fields = get_specific_field_list();
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$all_specific_terms = '';
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foreach ($specific_fields as $specific_field) {
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if (isset($_REQUEST[$specific_field['code']])) {
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$sterms = trim($_REQUEST[$specific_field['code']]);
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$all_specific_terms .= ' '. $sterms;
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if (!empty($sterms)) {
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$sterms = explode(',', $sterms);
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foreach ($sterms as $sterm) {
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$ic_slide->addTerm(trim($sterm), $specific_field['code']);
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}
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}
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}
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}
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$body_to_index = $all_specific_terms .' '. $title;
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$ic_slide->addValue("content", $body_to_index);
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// TODO: Add a comment to say terms separated by commas.
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$courseid = api_get_course_id();
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$ic_slide->addCourseId($courseid);
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$ic_slide->addToolId(TOOL_LEARNPATH);
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$xapian_data = array(
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SE_COURSE_ID => $courseid,
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SE_TOOL_ID => TOOL_LEARNPATH,
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SE_DATA => array('lp_id' => $lp_id, 'lp_item'=> $previous, 'document_id' => ''), // TODO: Unify with other lp types.
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SE_USER => (int)api_get_user_id(),
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);
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$ic_slide->xapian_data = serialize($xapian_data);
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$di->addChunk($ic_slide);
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// Index and return search engine document id.
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$did = $di->index();
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if ($did) {
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// Save it to db.
|
|
$tbl_se_ref = Database::get_main_table(TABLE_MAIN_SEARCH_ENGINE_REF);
|
|
$sql = 'INSERT INTO %s (id, course_code, tool_id, ref_id_high_level, ref_id_second_level, search_did)
|
|
VALUES (NULL , \'%s\', \'%s\', %s, %s, %s)';
|
|
$sql = sprintf($sql, $tbl_se_ref, api_get_course_id(), TOOL_LEARNPATH, $lp_id, $previous, $did);
|
|
Database::query($sql);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Intermediate to import_package only to allow import from local zip files
|
|
* @param string Path to the zip file, from the dokeos sys root
|
|
* @param string Current path (optional)
|
|
* @return string Absolute path to the imsmanifest.xml file or empty string on error
|
|
*/
|
|
function import_local_package($file_path, $current_dir = '') {
|
|
// TODO: Prepare info as given by the $_FILES[''] vector.
|
|
$file_info = array();
|
|
$file_info['tmp_name'] = $file_path;
|
|
$file_info['name'] = basename($file_path);
|
|
// Call the normal import_package function.
|
|
return $this->import_package($file_info, $current_dir);
|
|
}
|
|
|
|
/**
|
|
* Imports a zip file into the Chamilo structure
|
|
* @param string Zip file info as given by $_FILES['userFile']
|
|
* @return string Absolute path to the imsmanifest.xml file or empty string on error
|
|
*/
|
|
function import_package($zip_file_info, $current_dir = '') {
|
|
if ($this->debug > 0) { error_log('In scorm::import_package('.print_r($zip_file_info,true).',"'.$current_dir.'") method', 0); }
|
|
require_once api_get_path(LIBRARY_PATH).'document.lib.php';
|
|
$maxFilledSpace = DocumentManager :: get_course_quota();
|
|
|
|
$zip_file_path = $zip_file_info['tmp_name'];
|
|
$zip_file_name = $zip_file_info['name'];
|
|
if ($this->debug > 1) { error_log('New LP - import_package() - zip file path = '.$zip_file_path.', zip file name = '.$zip_file_name, 0); }
|
|
$course_rel_dir = api_get_course_path().'/scorm'; // scorm dir web path starting from /courses
|
|
$course_sys_dir = api_get_path(SYS_COURSE_PATH).$course_rel_dir; // Sbsolute system path for this course.
|
|
$current_dir = replace_dangerous_char(trim($current_dir),'strict'); // Current dir we are in, inside scorm/
|
|
if ($this->debug > 1) { error_log('New LP - import_package() - current_dir = '.$current_dir, 0); }
|
|
|
|
//$uploaded_filename = $_FILES['userFile']['name'];
|
|
// Get name of the zip file without the extension.
|
|
if ($this->debug > 1) { error_log('New LP - Received zip file name: '.$zip_file_path, 0); }
|
|
$file_info = pathinfo($zip_file_name);
|
|
$filename = $file_info['basename'];
|
|
$extension = $file_info['extension'];
|
|
$file_base_name = str_replace('.'.$extension,'',$filename); // Filename without its extension.
|
|
$this->zipname = $file_base_name; // Save for later in case we don't have a title.
|
|
|
|
if ($this->debug > 1) { error_log("New LP - base file name is : ".$file_base_name, 0); }
|
|
$new_dir = replace_dangerous_char(trim($file_base_name),'strict');
|
|
$this->subdir = $new_dir;
|
|
if ($this->debug > 1) { error_log("New LP - subdir is first set to : ".$this->subdir, 0); }
|
|
|
|
$zipFile = new pclZip($zip_file_path);
|
|
|
|
// Check the zip content (real size and file extension).
|
|
|
|
$zipContentArray = $zipFile->listContent();
|
|
|
|
$package_type = '';
|
|
$at_root = false;
|
|
$manifest = '';
|
|
$manifest_list = array();
|
|
|
|
// The following loop should be stopped as soon as we found the right imsmanifest.xml (how to recognize it?).
|
|
foreach($zipContentArray as $thisContent) {
|
|
//error_log('Looking at '.$thisContent['filename'], 0);
|
|
if (preg_match('~.(php.*|phtml)$~i', $thisContent['filename'])) {
|
|
$this->set_error_msg("File $file contains a PHP script");
|
|
//return api_failure::set_failure('php_file_in_zip_file');
|
|
} elseif (stristr($thisContent['filename'], 'imsmanifest.xml')) {
|
|
//error_log('Found imsmanifest at '.$thisContent['filename'], 0);
|
|
if ($thisContent['filename'] == basename($thisContent['filename'])) {
|
|
$at_root = true;
|
|
} else {
|
|
//$this->subdir .= '/'.dirname($thisContent['filename']);
|
|
if ($this->debug > 2) { error_log("New LP - subdir is now ".$this->subdir, 0); }
|
|
}
|
|
$package_type = 'scorm';
|
|
$manifest_list[] = $thisContent['filename'];
|
|
$manifest = $thisContent['filename']; //just the relative directory inside scorm/
|
|
} else {
|
|
// Do nothing, if it has not been set as scorm somewhere else, it stays as '' default.
|
|
}
|
|
$realFileSize += $thisContent['size'];
|
|
}
|
|
// Now get the shortest path (basically, the imsmanifest that is the closest to the root).
|
|
$shortest_path = $manifest_list[0];
|
|
$slash_count = substr_count($shortest_path, '/');
|
|
foreach ($manifest_list as $manifest_path) {
|
|
$tmp_slash_count = substr_count($manifest_path, '/');
|
|
if ($tmp_slash_count<$slash_count) {
|
|
$shortest_path = $manifest_path;
|
|
$slash_count = $tmp_slash_count;
|
|
}
|
|
}
|
|
$this->subdir .= '/'.dirname($shortest_path); // Do not concatenate because already done above.
|
|
$manifest = $shortest_path;
|
|
|
|
if ($this->debug > 1) { error_log('New LP - Package type is now '.$package_type, 0); }
|
|
|
|
if ($package_type== '')
|
|
// && defined('CHECK_FOR_SCORM') && CHECK_FOR_SCORM)
|
|
{
|
|
if ($this->debug > 1) { error_log('New LP - Package type is empty', 0); }
|
|
return api_failure::set_failure('not_scorm_content');
|
|
}
|
|
|
|
if (!enough_size($realFileSize, $course_sys_dir, $maxFilledSpace)) {
|
|
if ($this->debug > 1) { error_log('New LP - Not enough space to store package', 0); }
|
|
return api_failure::set_failure('not_enough_space');
|
|
}
|
|
|
|
// It happens on Linux that $new_dir sometimes doesn't start with '/'
|
|
if ($new_dir[0] != '/') {
|
|
$new_dir = '/'.$new_dir;
|
|
}
|
|
|
|
if ($new_dir[strlen($new_dir)-1] == '/') {
|
|
$new_dir = substr($new_dir,0,-1);
|
|
}
|
|
|
|
/* Uncompressing phase */
|
|
|
|
/*
|
|
We need to process each individual file in the zip archive to
|
|
- add it to the database
|
|
- parse & change relative html links
|
|
- make sure the filenames are secure (filter funny characters or php extensions)
|
|
*/
|
|
if (is_dir($course_sys_dir.$new_dir) OR @mkdir($course_sys_dir.$new_dir, api_get_permissions_for_new_directories())) {
|
|
|
|
// PHP method - slower...
|
|
if ($this->debug >= 1) { error_log('New LP - Changing dir to '.$course_sys_dir.$new_dir, 0); }
|
|
$saved_dir = getcwd();
|
|
chdir($course_sys_dir.$new_dir);
|
|
$unzippingState = $zipFile->extract();
|
|
for($j = 0; $j < count($unzippingState); $j++) {
|
|
$state = $unzippingState[$j];
|
|
|
|
// TODO: Fix relative links in html files (?)
|
|
$extension = strrchr($state['stored_filename'], '.');
|
|
if ($this->debug >= 1) { error_log('New LP - found extension '.$extension.' in '.$state['stored_filename'], 0); }
|
|
|
|
}
|
|
|
|
if (!empty($new_dir)) {
|
|
$new_dir = $new_dir.'/';
|
|
}
|
|
// Rename files, for example with \\ in it.
|
|
if ($dir = @opendir($course_sys_dir.$new_dir)) {
|
|
if ($this->debug == 1) { error_log('New LP - Opened dir '.$course_sys_dir.$new_dir, 0); }
|
|
while ($file=readdir($dir)) {
|
|
if ($file != '.' && $file != '..') {
|
|
$filetype = 'file';
|
|
|
|
if (is_dir($course_sys_dir.$new_dir.$file)) $filetype = 'folder';
|
|
|
|
// TODO: RENAMING FILES CAN BE VERY DANGEROUS SCORM-WISE, avoid that as much as possible!
|
|
//$safe_file = replace_dangerous_char($file, 'strict');
|
|
$find_str = array('\\', '.php', '.phtml');
|
|
$repl_str = array('/', '.txt', '.txt');
|
|
$safe_file = str_replace($find_str, $repl_str,$file);
|
|
|
|
if ($safe_file != $file) {
|
|
//@rename($course_sys_dir.$new_dir, $course_sys_dir.'/'.$safe_file);
|
|
$mydir = dirname($course_sys_dir.$new_dir.$safe_file);
|
|
if (!is_dir($mydir)) {
|
|
$mysubdirs = split('/', $mydir);
|
|
$mybasedir = '/';
|
|
foreach ($mysubdirs as $mysubdir) {
|
|
if (!empty($mysubdir)) {
|
|
$mybasedir = $mybasedir.$mysubdir.'/';
|
|
if (!is_dir($mybasedir)) {
|
|
@mkdir($mybasedir, api_get_permissions_for_new_directories());
|
|
if ($this->debug == 1) { error_log('New LP - Dir '.$mybasedir.' doesnt exist. Creating.', 0); }
|
|
}
|
|
}
|
|
}
|
|
}
|
|
@rename($course_sys_dir.$new_dir.$file,$course_sys_dir.$new_dir.$safe_file);
|
|
if ($this->debug == 1) { error_log('New LP - Renaming '.$course_sys_dir.$new_dir.$file.' to '.$course_sys_dir.$new_dir.$safe_file, 0); }
|
|
}
|
|
//set_default_settings($course_sys_dir, $safe_file, $filetype);
|
|
}
|
|
}
|
|
|
|
closedir($dir);
|
|
chdir($saved_dir);
|
|
|
|
api_chmod_R($course_sys_dir.$new_dir, api_get_permissions_for_new_directories());
|
|
if ($this->debug > 1) { error_log('New LP - changed back to init dir', 0); }
|
|
}
|
|
} else {
|
|
return '';
|
|
}
|
|
return $course_sys_dir.$new_dir.$manifest;
|
|
}
|
|
|
|
/**
|
|
* Sets the proximity setting in the database
|
|
* @param string Proximity setting
|
|
*/
|
|
function set_proximity($proxy = '') {
|
|
$course_id = api_get_course_int_id();
|
|
if ($this->debug > 0) { error_log('In scorm::set_proximity('.$proxy.') method', 0); }
|
|
$lp = $this->get_id();
|
|
if ($lp != 0) {
|
|
$tbl_lp = Database::get_course_table(TABLE_LP_MAIN);
|
|
$sql = "UPDATE $tbl_lp SET content_local = '$proxy' WHERE c_id = ".$course_id." AND id = ".$lp;
|
|
$res = Database::query($sql);
|
|
return $res;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the theme setting in the database
|
|
* @param string theme setting
|
|
*/
|
|
function set_theme($theme = '') {
|
|
$course_id = api_get_course_int_id();
|
|
if ($this->debug > 0) { error_log('In scorm::set_theme('.$theme.') method', 0); }
|
|
$lp = $this->get_id();
|
|
if ($lp != 0) {
|
|
$tbl_lp = Database::get_course_table(TABLE_LP_MAIN);
|
|
$sql = "UPDATE $tbl_lp SET theme = '$theme' WHERE c_id = ".$course_id." AND id = ".$lp;
|
|
$res = Database::query($sql);
|
|
return $res;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the image setting in the database
|
|
* @param string preview_image setting
|
|
*/
|
|
function set_preview_image($preview_image = '') {
|
|
$course_id = api_get_course_int_id();
|
|
if ($this->debug > 0) { error_log('In scorm::set_theme('.$preview_image.') method', 0); }
|
|
$lp = $this->get_id();
|
|
if ($lp != 0) {
|
|
$tbl_lp = Database::get_course_table(TABLE_LP_MAIN);
|
|
$sql = "UPDATE $tbl_lp SET preview_image = '$preview_image' WHERE c_id = ".$course_id." AND id = ".$lp;
|
|
$res = Database::query($sql);
|
|
return $res;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the author setting in the database
|
|
* @param string preview_image setting
|
|
*/
|
|
function set_author($author = '') {
|
|
$course_id = api_get_course_int_id();
|
|
if ($this->debug > 0) { error_log('In scorm::set_author('.$author.') method', 0); }
|
|
$lp = $this->get_id();
|
|
if ($lp != 0) {
|
|
$tbl_lp = Database::get_course_table(TABLE_LP_MAIN);
|
|
$sql = "UPDATE $tbl_lp SET author = '$author' WHERE c_id = ".$course_id." AND id = ".$lp;
|
|
$res = Database::query($sql);
|
|
return $res;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets the content maker setting in the database
|
|
* @param string Proximity setting
|
|
*/
|
|
function set_maker($maker = '') {
|
|
$course_id = api_get_course_int_id();
|
|
if ($this->debug > 0) { error_log('In scorm::set_maker method('.$maker.')', 0); }
|
|
$lp = $this->get_id();
|
|
if ($lp != 0) {
|
|
$tbl_lp = Database::get_course_table(TABLE_LP_MAIN);
|
|
$sql = "UPDATE $tbl_lp SET content_maker = '$maker' WHERE c_id = ".$course_id." AND id = ".$lp;
|
|
$res = Database::query($sql);
|
|
return $res;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Exports the current SCORM object's files as a zip. Excerpts taken from learnpath_functions.inc.php::exportpath()
|
|
* @param integer Learnpath ID (optional, taken from object context if not defined)
|
|
*/
|
|
function export_zip($lp_id = null) {
|
|
if ($this->debug > 0) { error_log('In scorm::export_zip method('.$lp_id.')', 0); }
|
|
if (empty($lp_id)) {
|
|
if (!is_object($this)) {
|
|
return false;
|
|
} else {
|
|
$id = $this->get_id();
|
|
if (empty($id)) {
|
|
return false;
|
|
} else {
|
|
$lp_id = $this->get_id();
|
|
}
|
|
}
|
|
}
|
|
//error_log('New LP - in export_zip()',0);
|
|
//zip everything that is in the corresponding scorm dir
|
|
//write the zip file somewhere (might be too big to return)
|
|
require_once api_get_path(LIBRARY_PATH).'fileUpload.lib.php';
|
|
require_once api_get_path(LIBRARY_PATH).'fileManage.lib.php';
|
|
require_once api_get_path(LIBRARY_PATH).'document.lib.php';
|
|
require_once api_get_path(LIBRARY_PATH).'pclzip/pclzip.lib.php';
|
|
require_once 'learnpath_functions.inc.php';
|
|
$course_id = api_get_course_int_id();
|
|
$tbl_lp = Database::get_course_table(TABLE_LP_MAIN);
|
|
$_course = Database::get_course_info(api_get_course_id());
|
|
|
|
$sql = "SELECT * FROM $tbl_lp WHERE c_id = ".$course_id." AND id=".$lp_id;
|
|
$result = Database::query($sql);
|
|
$row = Database::fetch_array($result);
|
|
$LPname = $row['path'];
|
|
$list = split('/', $LPname);
|
|
$LPnamesafe = $list[0];
|
|
//$zipfoldername = '/tmp';
|
|
//$zipfoldername = '../../courses/'.$_course['directory'].'/temp/'.$LPnamesafe;
|
|
$zipfoldername = api_get_path(SYS_COURSE_PATH).$_course['directory'].'/temp/'.$LPnamesafe;
|
|
$scormfoldername = api_get_path(SYS_COURSE_PATH).$_course['directory'].'/scorm/'.$LPnamesafe;
|
|
$zipfilename = $zipfoldername.'/'.$LPnamesafe.'.zip';
|
|
|
|
// Get a temporary dir for creating the zip file.
|
|
|
|
//error_log('New LP - cleaning dir '.$zipfoldername, 0);
|
|
deldir($zipfoldername); // Make sure the temp dir is cleared.
|
|
$res = mkdir($zipfoldername, api_get_permissions_for_new_directories());
|
|
//error_log('New LP - made dir '.$zipfoldername, 0);
|
|
|
|
// Create zipfile of given directory.
|
|
$zip_folder = new PclZip($zipfilename);
|
|
$zip_folder->create($scormfoldername.'/', PCLZIP_OPT_REMOVE_PATH, $scormfoldername.'/');
|
|
|
|
//$zipfilename = '/var/www/dokeos-comp/courses/TEST2/scorm/example_document.html';
|
|
//This file sending implies removing the default mime-type from php.ini
|
|
//DocumentManager :: file_send_for_download($zipfilename, true, $LPnamesafe.'.zip');
|
|
DocumentManager :: file_send_for_download($zipfilename, true);
|
|
|
|
// Delete the temporary zip file and directory in fileManage.lib.php
|
|
my_delete($zipfilename);
|
|
my_delete($zipfoldername);
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Gets a resource's path if available, otherwise return empty string
|
|
* @param string Resource ID as used in resource array
|
|
* @return string The resource's path as declared in imsmanifest.xml
|
|
*/
|
|
function get_res_path($id) {
|
|
if ($this->debug > 0) { error_log('In scorm::get_res_path('.$id.') method', 0); }
|
|
$path = '';
|
|
if (isset($this->resources[$id])) {
|
|
$oRes =& $this->resources[$id];
|
|
$path = @$oRes->get_path();
|
|
}
|
|
return $path;
|
|
}
|
|
|
|
/**
|
|
* Gets a resource's type if available, otherwise return empty string
|
|
* @param string Resource ID as used in resource array
|
|
* @return string The resource's type as declared in imsmanifest.xml
|
|
*/
|
|
function get_res_type($id) {
|
|
if ($this->debug > 0) { error_log('In scorm::get_res_type('.$id.') method', 0); }
|
|
$type = '';
|
|
if (isset($this->resources[$id])) {
|
|
$oRes =& $this->resources[$id];
|
|
$temptype = $oRes->get_scorm_type();
|
|
if (!empty($temptype)) {
|
|
$type = $temptype;
|
|
}
|
|
}
|
|
return $type;
|
|
}
|
|
|
|
/**
|
|
* Gets the default organisation's title
|
|
* @return string The organization's title
|
|
*/
|
|
function get_title() {
|
|
if ($this->debug > 0) { error_log('In scorm::get_title() method', 0); }
|
|
$title = '';
|
|
if (isset($this->manifest['organizations']['default'])) {
|
|
$title = $this->organizations[$this->manifest['organizations']['default']]->get_name();
|
|
} elseif (count($this->organizations)==1) {
|
|
// This will only get one title but so we don't need to know the index.
|
|
foreach($this->organizations as $id => $value) {
|
|
$title = $this->organizations[$id]->get_name();
|
|
break;
|
|
}
|
|
}
|
|
return $title;
|
|
}
|
|
|
|
/**
|
|
* // TODO @TODO Implement this function to restore items data from an imsmanifest,
|
|
* updating the existing table... This will prove very useful in case initial data
|
|
* from imsmanifest were not imported well enough
|
|
* @param string course Code
|
|
* @param string LP ID (in database)
|
|
* @param string Manifest file path (optional if lp_id defined)
|
|
* @return integer New LP ID or false on failure
|
|
* TODO @TODO Implement imsmanifest_path parameter
|
|
*/
|
|
function reimport_manifest($course, $lp_id = null, $imsmanifest_path = '') {
|
|
if ($this->debug > 0) { error_log('In scorm::reimport_manifest() method', 0); }
|
|
global $_course;
|
|
// RECOVERING PATH FROM DB
|
|
$main_table = Database::get_main_table(TABLE_MAIN_COURSE);
|
|
//$course = Database::escape_string($course);
|
|
$course = $this->escape_string($course);
|
|
$sql = "SELECT * FROM $main_table WHERE code = '$course'";
|
|
if ($this->debug > 2) { error_log('New LP - scorm::reimport_manifest() '.__LINE__.' - Querying course: '.$sql, 0); }
|
|
//$res = Database::query($sql);
|
|
$res = Database::query($sql);
|
|
if (Database::num_rows($res) > 0) {
|
|
$this->cc = $course;
|
|
} else {
|
|
$this->error = 'Course code does not exist in database ('.$sql.')';
|
|
return false;
|
|
}
|
|
|
|
// TODO: Make it flexible to use any course_code (still using env course code here)
|
|
//$lp_table = Database::get_course_table(LEARNPATH_TABLE);
|
|
$course_id = api_get_course_int_id();
|
|
$lp_table = Database::get_course_table(TABLE_LP_MAIN);
|
|
|
|
//$id = Database::escape_integer($id);
|
|
$lp_id = $this->escape_string($lp_id);
|
|
$sql = "SELECT * FROM $lp_table WHERE c_id = ".$course_id." AND id = '$lp_id'";
|
|
if ($this->debug > 2) { error_log('New LP - scorm::reimport_manifest() '.__LINE__.' - Querying lp: '.$sql, 0); }
|
|
//$res = Database::query($sql);
|
|
$res = Database::query($sql);
|
|
if (Database::num_rows($res) > 0) {
|
|
$this->lp_id = $lp_id;
|
|
$row = Database::fetch_array($res);
|
|
$this->type = $row['lp_type'];
|
|
$this->name = stripslashes($row['name']);
|
|
$this->encoding = $row['default_encoding'];
|
|
$this->proximity = $row['content_local'];
|
|
$this->maker = $row['content_maker'];
|
|
$this->prevent_reinit = $row['prevent_reinit'];
|
|
$this->license = $row['content_license'];
|
|
$this->scorm_debug = $row['debug'];
|
|
$this->js_lib = $row['js_lib'];
|
|
$this->path = $row['path'];
|
|
if ($this->type == 2) {
|
|
if ($row['force_commit'] == 1) {
|
|
$this->force_commit = true;
|
|
}
|
|
}
|
|
$this->mode = $row['default_view_mod'];
|
|
$this->subdir = $row['path'];
|
|
}
|
|
// Parse the manifest (it is already in this lp's details).
|
|
$manifest_file = api_get_path(SYS_COURSE_PATH).$_course['directory'].'/scorm/'.$this->subdir.'/imsmanifest.xml';
|
|
if ($this->subdir == '') {
|
|
$manifest_file = api_get_path(SYS_COURSE_PATH).$_course['directory'].'/scorm/imsmanifest.xml';
|
|
}
|
|
echo $manifest_file;
|
|
if (is_file($manifest_file) && is_readable($manifest_file)) {
|
|
// Re-parse the manifest file.
|
|
if ($this->debug > 1) { error_log('New LP - In scorm::reimport_manifest() - Parsing manifest '.$manifest_file, 0); }
|
|
$manifest = $this->parse_manifest($manifest_file);
|
|
// Import new LP in DB (ignore the current one).
|
|
if ($this->debug > 1) { error_log('New LP - In scorm::reimport_manifest() - Importing manifest '.$manifest_file, 0); }
|
|
$this->import_manifest(api_get_course_id());
|
|
} else {
|
|
if ($this->debug > 0) { error_log('New LP - In scorm::reimport_manifest() - Could not find manifest file at '.$manifest_file, 0); }
|
|
}
|
|
return false;
|
|
}
|
|
}
|
|
|