update.php

这是一个joomla系统的插件, 这是一个joomla系统的插件

<?php
/**
* @package EasyGallery
* @copyright (C) 2006 Joomla-addons.org
* @author  Adam van Dongen
* @version $Id: update.php 4 2007-06-16 14:22:19Z websmurf $
* 
* --------------------------------------------------------------------------------
* All rights reserved. Easy Gallery Component for Joomla!
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the Joomla-addons Free Software License 
* See LICENSE.php for more information.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  
* --------------------------------------------------------------------------------
**/

defined( '_VALID_MOS' ) or die( 'Restricted access' );

$xajax->registerFunction(array("compairHash", "update", "compairHash"), XAJAX_POST);
$xajax->registerFunction(array("updateFile", "update", "updateFile"), XAJAX_POST);

class update {
  
  /**
   * Show files and hashes
   *
   */
  function show(){
    global $option, $mainframe;
    
    $files = mosReadDirectory(PATH_EASYGALLERY, '.php', true, true);
    
    $f_files = mosReadDirectory($mainframe->getCfg('absolute_path') . '/components/com_easygallery', '.php', true, true);
    
    $files = array_merge($files, $f_files);
    
    $f = array();
    for($i=0,$n=count($files);$i<$n;$i++){
      $file = str_replace('\\', '/', $files[$i]);
      
      //skip backup files
      if(strpos($file, 'php-bak')){
        continue;
      }
                  
      $content = file_get_contents($file);
      $content = str_replace(array("\n", "\r"), '', $content); //remove breaks to avoid different md5
      
      $hash = md5($content);
      
      $obj = new stdClass();
      $obj->file = str_replace($mainframe->getCfg('absolute_path'), '', $file);
      $obj->hash = $hash;
      
      $f[] = $obj;
    }
    
    HTML_easygallery::showUpdates($f);
  }
  
  /**
   * Compair local hash with remote server.
   *
   * @param string $file
   * @param string $hash
   * @param int $id
   */
  function compairHash($file, $hash, $id){
    
    $objResponse = new xajaxResponse();
    
    if(!function_exists('fopen') || !ini_get('allow_url_fopen')){
      $objResponse->addAssign('file_' . $id, 'innerHTML', 'Fopen not defined or allow_url_fopen disabled');
  	  return $objResponse->getXML();
    }
    
    $return = '';
    $fp = @fopen('http://www.joomla-addons.org/updates/easygallery' . str_replace(array('administrator/components/com_easygallery', 'components/com_easygallery'), '', $file) . '.txt', 'r');
    if($fp){
      $content = "";
      do {
         $data = fread($fp, 8192);
         if (strlen($data) == 0) {
             break;
         }
         $content .= $data;
      } while(true);
      fclose ($fp);
      
      $content = str_replace(array("\n", "\r"), '', $content); //remove breaks to avoid different md5
      
      $r_hash = md5($content);
      
      $return = ($hash == $r_hash ? '<font color="green">' . $r_hash . '</font>' : '<font color="red">' . $r_hash . '</font> <a href="javascript:void(0);" onclick="updateFile(\'' . $file . '\', \'' . $hash . '\', ' . $id . ');">[ update ]</a>');
      
    } else {
      $objResponse->addAssign('file_' . $id, 'innerHTML', 'Error opening file on remote server');
  	  return $objResponse->getXML();
    }
    
    $objResponse->addAssign('file_' . $id, 'innerHTML', $return);
	  return $objResponse->getXML();
  }
  
  /**
   * Update file from remote version
   *
   * @param string $file
   */
  function updateFile($file, $hash, $id, $no_ftp, $ftp_host, $ftp_port, $ftp_user, $ftp_pass, $ftp_path){
    global $mainframe;
    
    $objResponse = new xajaxResponse();
    if($no_ftp == false){ //use ftp
      if(!function_exists('ftp_connect')){
        $objResponse->addAlert('The ftp_connect function is not available on your installation. Update cannot be performed');
    	  return $objResponse->getXML();
      }
    }
    if(!function_exists('fopen') || !ini_get('allow_url_fopen')){
      $objResponse->addAlert('Fopen not defined or allow_url_fopen disabled');
  	  return $objResponse->getXML();
    }
    
    $fp = @fopen('http://www.joomla-addons.org/updates/easygallery' . str_replace(array('administrator/components/com_easygallery', 'components/com_easygallery'), '', $file) . '.txt', 'r');
    if($fp){
      $content = "";
      do {
         $data = fread($fp, 8192);
         if (strlen($data) == 0) {
             break;
         }
         $content .= $data;
      } while(true);
      fclose ($fp);
      
      $r_hash = md5(str_replace(array("\n", "\r"), '', $content));
    } else {
      $objResponse->addAlert('Error opening file on remote server');
  	  return $objResponse->getXML();
    }
    
    if($no_ftp == "false"){ //use ftp
      $ftp = ftp_connect($ftp_host, $ftp_port);
      if(!$ftp){
        $objResponse->addAlert(sprintf('Failed to connect to host: %s', $ftp_host));
    	  return $objResponse->getXML();
      }
      if(!ftp_login($ftp, $ftp_user, $ftp_pass)){
        $objResponse->addAlert('Login to ftp server failed');
    	  return $objResponse->getXML();
      }
      
      if(substr($ftp_path, 0, 1) != '/'){
        $objResponse->addAlert('FTP path MUST start with a leading slash');
    	  return $objResponse->getXML();
      }
      
      $ftp_path = $ftp_path . '' . $file;
      
      if(file_exists($mainframe->getCfg('absolute_path') . '' . $file . '-bak')){
        ftp_delete($ftp, $ftp_path . '-bak');
        $objResponse->addAlert(sprintf('Backup file allready existed: %s, file deleted', $file . '-bak'));
      }
      
      $fp = fopen('http://www.joomla-addons.org/updates/easygallery' . str_replace(array('administrator/components/com_easygallery', 'components/com_easygallery'), '', $file) . '.txt', 'r');
      if(!ftp_rename($ftp, $ftp_path, $ftp_path . '-bak')){
        $objResponse->addAlert(sprintf('Failed to rename %s to %s', $file, $file . '-bak'));
        return $objResponse->getXML();
      }
      if(!ftp_fput($ftp, $ftp_path, $fp, FTP_ASCII)){
        $objResponse->addAlert(sprintf('Failed to write content to %s', $file));
        return $objResponse->getXML();
      }
      fclose($fp);
    } else { //use php to write
      if(file_exists($mainframe->getCfg('absolute_path') . '' . $file . '-bak')){
        unlink($mainframe->getCfg('absolute_path') . '' . $file . '-bak');
        $objResponse->addAlert(sprintf('Backup file allready existed: %s, file deleted', $file . '-bak'));
      }
      
      if(!rename($mainframe->getCfg('absolute_path') . '' . $file, $mainframe->getCfg('absolute_path') . '' . $file . '-bak')){
        $objResponse->addAlert(sprintf('Failed to rename %s to %s', $file, $file . '-bak'));
        return $objResponse->getXML();
      }
      $fp = fopen($mainframe->getCfg('absolute_path') . '' . $file, 'w+');
      if(!fwrite($fp, $content)){
        $objResponse->addAlert(sprintf('Failed to write content to %s', $file));
        return $objResponse->getXML();
      }
      fclose($fp);
    }
    
    $objResponse->addAlert('File updated');
//    $objResponse->addScript('compairFileHash(\''. $file . '\',\'' . $hash . '\',' . $id . ');');
    $objResponse->addAssign('file_' . $id, 'innerHTML', '- refresh to re-check -');
	  return $objResponse->getXML();
  }
}

?>