egroupware/etemplate/inc/class.etemplate_widget_file.inc.php
2012-05-14 19:12:04 +00:00

199 lines
5.7 KiB
PHP

<?php
/**
* EGroupware - eTemplate serverside file upload widget
*
* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
* @package etemplate
* @subpackage api
* @link http://www.egroupware.org
* @author Nathan Gray
* @copyright 2011 Nathan Gray
* @version $Id$
*/
/**
* eTemplate file upload widget
* Uses AJAX to send file(s) to server, and stores for submit
*/
class etemplate_widget_file extends etemplate_widget
{
/**
* Constructor
*
* @param string $xml
*/
public function __construct($xml='')
{
if($xml) parent::__construct($xml);
// Legacy multiple - id ends in []
if(substr($this->id,-2) == '[]')
{
$this->attrs['multiple'] = true;
}
$this->attrs['max_file_size'] = egw_vfs::int_size(ini_get('upload_max_filesize'));
}
/**
* Ajax callback to receive an incoming file
*
* The incoming file is moved from its temporary location (otherwise server will delete it) and
* the file information is stored into the widget's value. When the form is submitted, the information for all
* files uploaded is available in the returned $content array. Because files are uploaded asynchronously,
* submission should be quick.
*
* @note Currently, no attempt is made to clean up files automatically.
*/
public static function ajax_upload() {
$response = egw_json_response::get();
$request_id = str_replace(' ', '+', rawurldecode($_REQUEST['request_id']));
$widget_id = $_REQUEST['widget_id'];
if(!self::$request = etemplate_request::read($request_id)) {
$response->error("Could not read session");
return;
}
if (!($template = etemplate_widget_template::instance(self::$request->template['name'], self::$request->template['template_set'],
self::$request->template['version'], self::$request->template['load_via'])))
{
// Can't use callback
error_log("Could not get template for file upload, callback skipped");
}
$file_data = array();
// There should only be one file, as they're sent one at a time
foreach ($_FILES as $field => &$files)
{
$widget = $template->getElementById($widget_id ? $widget_id : $field);
if($widget && $widget->attrs['mime']) {
$mime = $widget->attrs['mime'];
}
// Check for legacy [] in id to indicate multiple - it changes format
if(is_array($files['name'])) {
$file_list = array();
foreach($files as $f_field => $values)
{
foreach($values as $key => $f_value) {
$file_list[$key][$f_field] = $f_value;
}
}
foreach($file_list as $file)
{
self::process_uploaded_file($field, $file, $mime, $file_data);
}
}
else
{
// Just one file
self::process_uploaded_file($field, $files, $mime, $file_data);
}
}
// Set up response
$response->data($file_data);
// Check for a callback, call it if there is one
foreach($_FILES as $field => $file) {
if($element = $template->getElementById($field))
{
$callback = $element->attrs['callback'];
if(!$callback) $callback = $template->getElementAttribute($field, 'callback');
if($callback)
{
ExecMethod($callback, $_FILES[$field]);
}
}
}
}
/**
* Process one uploaded file. There should only be one per request...
*/
protected static function process_uploaded_file($field, Array &$file, $mime, Array &$file_data)
{
if ($file['error'] == UPLOAD_ERR_OK && trim($file['name']) != '' && $file['size'] > 0 && is_uploaded_file($file['tmp_name'])) {
// Mime check
if($mime)
{
$type = $file['type'];
$is_preg = $mime[0] == '/';
if (!$is_preg && strcasecmp($mime[0],$type) ||
$is_preg && !preg_match($mime,$type))
{
$file_data[$file['name']] = lang('File is of wrong type (%1 != %2)!',$type,$mime);
continue;
}
}
if (is_dir($GLOBALS['egw_info']['server']['temp_dir']) && is_writable($GLOBALS['egw_info']['server']['temp_dir']))
{
$new_file = tempnam($GLOBALS['egw_info']['server']['temp_dir'],'egw_');
}
else
{
$new_file = $file['tmp_name'].'+';
}
if(move_uploaded_file($file['tmp_name'], $new_file)) {
$file['tmp_name'] = $new_file;
// Data to send back to client
$temp_name = basename($file['tmp_name']);
$file_data[$temp_name] = array(
'name' => basename($file['name']),
'type' => $file['type']
);
}
}
}
/**
* Validate input
* Merge any already uploaded files into the content array
*
* @param string $cname current namespace
* @param array $expand values for keys 'c', 'row', 'c_', 'row_', 'cont'
* @param array $content
* @param array &$validated=array() validated content
*/
public function validate($cname, array $expand, array $content, &$validated=array())
{
$form_name = self::form_name($cname, $this->id, $expand);
if (!$this->is_readonly($cname, $form_name))
{
$value = $value_in = self::get_array($content, $form_name);
$valid =& self::get_array($validated, $form_name, true);
if(!is_array($value)) $value = array();
// Incoming values indexed by temp name
if($value[0]) $value = $value[0];
foreach($value as $tmp => $file)
{
if (is_dir($GLOBALS['egw_info']['server']['temp_dir']) && is_writable($GLOBALS['egw_info']['server']['temp_dir']))
{
$path = $GLOBALS['egw_info']['server']['temp_dir'].'/'.$tmp;
}
else
{
$path = $tmp.'+';
}
$stat = stat($path);
$valid[] = array(
'name' => $file['name'],
'type' => $file['type'],
'tmp_name' => $path,
'error' => UPLOAD_ERR_OK, // Always OK if we get this far
'size' => $stat['size'],
'ip' => $_SERVER['REMOTE_ADDR'], // Assume it's the same as for when it was uploaded...
);
}
if($valid && !$this->attrs['multiple']) $valid = $valid[0];
}
}
}
etemplate_widget::registerWidget('etemplate_widget_file', array('file'));