/**
* main export routine
*/
public function export()
{
global $SESSION;
// the xml stuff
$this->export_header();
$this->setup_links();
$this->notify_progress_callback(10, get_string('exportingviews', 'export'));
if ($this->viewexportmode == PluginExport::EXPORT_LIST_OF_COLLECTIONS || $this->viewexportmode == PluginExport::EXPORT_ALL_VIEWS_COLLECTIONS) {
$this->export_collections();
}
$this->export_views();
$this->notify_progress_callback(50, get_string('exportingartefacts', 'export'));
$this->export_artefacts();
$this->notify_progress_callback(80, get_string('exportingartefactplugindata', 'export'));
$internal = null;
foreach ($this->specialcases as $plugin => $artefacts) {
if ($plugin == 'internal') {
$internal = $artefacts;
continue;
// do it last so other plugins can inject persondata
}
$classname = 'LeapExport' . ucfirst($plugin);
$pluginexport = new $classname($this, $artefacts);
$this->xml .= $pluginexport->get_export_xml();
}
if (!empty($internal)) {
$pluginexport = new LeapExportInternal($this, $internal);
$this->xml .= $pluginexport->get_export_xml();
}
$this->notify_progress_callback(85, get_string('exportingfooter', 'export'));
$this->export_footer();
$this->notify_progress_callback(90, get_string('writingfiles', 'export'));
// Filter invalid XML characters out of the final product
require_once 'file.php';
$this->xml = preg_replace(xml_filter_regex(), '', $this->xml);
// write out xml to a file
if (!file_put_contents($this->exportdir . $this->leapfile, $this->xml)) {
$SESSION->add_error_msg(get_string('couldnotwriteLEAPdata', 'export'));
}
// copy attachments over
foreach ($this->attachments as $id => $fileinfo) {
$existingfile = $fileinfo->file;
$desiredname = $fileinfo->name;
if (!is_file($existingfile) || !copy($existingfile, $this->exportdir . $this->filedir . $id . '-' . $desiredname)) {
$SESSION->add_error_msg(get_string('couldnotcopyattachment', 'export', $desiredname));
}
}
$this->notify_progress_callback(95, get_string('creatingzipfile', 'export'));
// zip everything up
try {
create_zip_archive($this->exportdir, $this->zipfile, array($this->leapfile, $this->filedir));
} catch (SystemException $e) {
throw new SystemException('Failed to zip the export file: ' . $e->getMessage());
}
$this->notify_progress_callback(100, get_string('Done', 'export'));
return $this->zipfile;
}
/**
* Reads and parses the archive's "leap2a.xml" file
* @throws ImportException
*/
public function read_leap2a_xml_file()
{
$this->filename = self::find_file($this->get('importertransport')->files_info());
$this->logfile = dirname($this->filename) . '/import.log';
$this->trace('Loading import from ' . $this->filename);
$this->snapshot('begin');
$options = LIBXML_COMPACT | LIBXML_NONET;
if (function_exists('libxml_disable_entity_loader')) {
// The LIBXML_NONET stops proper network based XXE attacks from happening
libxml_disable_entity_loader(false);
}
require_once 'file.php';
if (!($this->xml = simplexml_load_string(preg_replace(xml_filter_regex(), '', file_get_contents($this->filename)), 'SimpleXMLElement', $options))) {
// TODO: bail out in a much nicer way...
throw new ImportException($this, "FATAL: XML file is not well formed! Please consult Mahara's error log for more information");
}
if (function_exists('libxml_disable_entity_loader')) {
libxml_disable_entity_loader(true);
}
$this->namespaces = array_flip($this->xml->getDocNamespaces());
$this->registerXpathNamespaces($this->xml);
$this->trace("Document loaded, entries: " . count($this->xml->entry));
$this->snapshot('loaded XML');
$this->detect_leap2a_namespace();
$this->ensure_document_valid();
}
