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<?php
/**
* @version 2.2.3
* @package com_vitabook
* @copyright Copyright (C) 2012. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE.txt
* @author JoomVita - http://www.joomvita.com
*/
// No direct access
defined('_JEXEC') or die;
//Import filesystem libraries.
jimport('joomla.filesystem.file');
/**
* Vitabook helper.
*/
abstract class VitabookHelper
{
/**
* Configure the Linkbar.
* For Joomla > 3.0
*/
public static function addSubmenu($vName = '')
{
$user = JFactory::getUser();
$params = JComponentHelper::getParams('com_vitabook');
$avatar = $params->get('vbAvatar');
JHtmlSidebar::addEntry(
JText::_('COM_VITABOOK_MESSAGES_TITLE'),
'index.php?option=com_vitabook&view=messages',
$vName == 'messages'
);
if($user->authorise('core.admin', 'com_vitabook'))
{
JHtmlSidebar::addEntry(
JText::_('COM_VITABOOK_IMPORT_TITLE'),
'index.php?option=com_vitabook&view=import',
$vName == 'import'
);
}
//-- If VitaBook avatar system is used we need to add a submenu item for avatar management
if($avatar == 1 && ($user->authorise('core.edit', 'com_vitabook') || $user->authorise('core.delete', 'com_vitabook')))
{
JHtmlSidebar::addEntry(
JText::_('COM_VITABOOK_AVATARS_TITLE'),
'index.php?option=com_vitabook&view=avatars',
$vName == 'avatars'
);
}
}
/**
* Configure the Linkbar.
* For Joomla 2.5
*/
public static function addSubmenuLegacy($vName = '')
{
$user = JFactory::getUser();
$params = JComponentHelper::getParams('com_vitabook');
$avatar = $params->get('vbAvatar');
JSubMenuHelper::addEntry(JText::_('COM_VITABOOK_MESSAGES_TITLE'), 'index.php?option=com_vitabook&view=messages', $vName == 'messages');
if($user->authorise('core.admin', 'com_vitabook'))
{
JSubMenuHelper::addEntry(JText::_('COM_VITABOOK_IMPORT_TITLE'), 'index.php?option=com_vitabook&view=import', $vName == 'import');
}
//-- If VitaBook avatar system is used we need to add a submenu item for avatar management
if($avatar == 1 && ($user->authorise('core.edit', 'com_vitabook') || $user->authorise('core.delete', 'com_vitabook')))
{
JSubMenuHelper::addEntry(JText::_('COM_VITABOOK_AVATARS_TITLE'), 'index.php?option=com_vitabook&view=avatars', $vName == 'avatars');
}
}
/**
* Legacy method, was renamed to userActions() for readability purposes
*/
public static function getActions()
{
return VitabookHelper::userActions();
}
/**
* Method to determine the actions of a user can undertake within the component
* @return array The actions a user can do
*/
public static function userActions()
{
$user = JFactory::getUser();
$result = new JObject;
$actions = array('core.admin', 'core.manage', 'vitabook.create.new', 'vitabook.create.reply', 'core.edit', 'core.edit.own', 'core.edit.state', 'core.delete', 'vitabook.insert.image', 'vitabook.upload', 'vitabook.insert.video');
// if user is guest and ip is blocked
if($user->get('guest') && !VitabookHelper::checkIpBlock()){
return $result;
}
foreach ($actions as $action){
$result->set($action, $user->authorise($action, 'com_vitabook'));
}
return $result;
}
/**
* Method to determine the actions of a user can do with a message
* @return array The actions a user can do with this message
*/
public static function messageActions($canDo,$message)
{
$params = JComponentHelper::getParams('com_vitabook');
$actions = new stdClass();
// edit
// Check general edit permissions first, then try to fallback to core.edit.own
$actions->edit = ($canDo->get('core.edit') ||
($canDo->get('core.edit.own') && VitabookHelper::messageEdit($message->jid,$message->date))
);
// (un)publish
$actions->state = $canDo->get('core.edit.state');
// delete
$actions->delete = $canDo->get('core.delete');
// reply
$actions->reply = ($canDo->get('vitabook.create.reply') &&
$message->level < $params->get('max_level') &&
VitabookHelper::messageReply($message->date)
);
// ipblock
$actions->manage = $canDo->get('core.manage');
return $actions;
}
/**
* Method to determine if a user can edit its own message
* @return true or false
*/
public static function messageEdit($ownerId, $messageDateTime)
{
$user = JFactory::getUser();
if(!$user->get('guest') && $user->get('id') == $ownerId)
{
// Keep maximum time for edit.own in mind. 0 is always edit own
// Convert minutes to seconds
$maxEditSeconds = JComponentHelper::getParams('com_vitabook')->get('max_edit_time') * 60;
$currentTimestamp = strtotime(JFactory::getDate('utc')->toSql());
$messageTimestamp = strtotime($messageDateTime);
return ($maxEditSeconds == 0 || $currentTimestamp - $messageTimestamp < $maxEditSeconds);
}
return false;
}
/**
* Method to determine if replies to message are allowed
* @return true or false
*/
public static function messageReply($messageDateTime)
{
// Keep maximum time for replies in mind. When 0, replies are always allowed
// Convert days to seconds
$maxReplySeconds = JComponentHelper::getParams('com_vitabook')->get('max_reply_time') * 24 * 60 * 60;
$currentTimestamp = strtotime(JFactory::getDate('utc')->toSql());
$messageTimestamp = strtotime($messageDateTime);
return ($maxReplySeconds == 0 || ($currentTimestamp - $messageTimestamp) < $maxReplySeconds);
}
/**
* Method to format the date displayed
* @input message object
* @output string Date
*/
public static function formatDate($message)
{
// Get date format from parameters, LC2 is the default
$date_format = JComponentHelper::getParams('com_vitabook')->get('vb_date_format','DATE_FORMAT_LC2');
if($date_format == 'relative' || $date_format == 'RELATIVE')
{
return JHtml::_('date.relative',$message->date);
}
else {
return JHtml::_('date', $message->date, $date_format);
}
}
/*
* Check for sufficient memory for resizing image
* Input is JImage object
*/
public static function checkMemory($image)
{
if((function_exists('memory_get_usage')) && (ini_get('memory_limit')))
{
$imageInfo = getimagesize($image->getPath());
switch (JImage::getImageFileProperties($image->getPath())->mime)
{
case 'image/gif':
$channel = 1;
break;
case 'image/png':
case 'image/x-png':
$channel = 3;
break;
case 'image/jpeg':
case 'image/pjpeg':
$channel = $imageInfo['channels'];
break;
}
$K64 = 65536;
$corrfactor = 1.8;
$memoryNeeded = round(($imageInfo[0]
* $imageInfo[1]
* $imageInfo['bits']
* $channel / 8
+ $K64)
* $corrfactor);
$memoryNeeded = memory_get_usage() + $memoryNeeded;
// Get memory limit
$memory_limit = @ini_get('memory_limit');
if(!empty($memory_limit) && $memory_limit != 0) {
$memory_limit = substr($memory_limit, 0, -1) * 1024 * 1024;
}
if($memory_limit != 0 && $memoryNeeded > $memory_limit) {
return false;
}
}
return true;
}
/**
* Method to check if the ip address of the user is blocked
* @input string ip-address
* @output false when listed, true if not
*/
public static function checkIpBlock($ip = 'default')
{
if($ip == 'default'){
$ip = $_SERVER['REMOTE_ADDR'];
}
// Get blocked ips
$ips = JComponentHelper::getParams('com_vitabook')->get('ipblock','');
$blocked_ips = array_map('trim', explode(',', $ips));
// if blocklist is empty
if(!$ips || $ips == '' || empty($ips)) {
return true;
}
foreach($blocked_ips as $blocked_ip)
{
$ip_regexp = str_replace('x', '..?.?', preg_quote($blocked_ip));
if(preg_match('@'.$ip_regexp.'@', $ip)) {
return false;
}
}
return true;
}
/*
* Get parameters from component in object class
*/
public static function getParams($option = 'com_vitabook')
{
// get existing values
$db = JFactory::getDBO();
$query = $db->getQuery(true);
$query->select('params');
$query->from('#__extensions');
$query->where($db->quoteName('name') . ' = ' . $db->quote($option));
$db->setQuery($query);
$params = $db->loadResult();
return $params = json_decode($params);
}
/*
* Set parameters from component as json object
*/
public static function setParams($params, $option = 'com_vitabook')
{
$params = json_encode($params);
// Set new parameters
$db = JFactory::getDBO();
$query = $db->getQuery(true);
$query->update($db->quoteName('#__extensions'));
$query->set($db->quoteName('params') . ' = ' . $db->quote($params));
$query->where($db->quoteName('name') . ' = ' . $db->quote($option));
$db->setQuery($query);
if(!$db->query()) {
return false;
}
return true;
}
/**
* Build an array of activate states to be used by jgrid.state,
*
* @return array a list of possible states to display
*
* @since 3.0
*/
public static function activatedStates()
{
$states = array(
0 => array(
'task' => 'activate',
'text' => '',
'active_title' => 'COM_VITABOOK_MESSAGES_ACTIVATE',
'inactive_title' => '',
'tip' => true,
'active_class' => 'unpublish',
'inactive_class' => 'unpublish'
),
1 => array(
'task' => 'deactivate',
'text' => '',
'active_title' => 'COM_VITABOOK_MESSAGES_DEACTIVATE',
'inactive_title' => '',
'tip' => true,
'active_class' => 'publish',
'inactive_class' => 'publish'
)
);
return $states;
}
/**
* Build an absolute url
*/
public static function getAbsoluteRoute($url)
{
$uri = JUri::getInstance();
$base = $uri->toString(array('scheme', 'user', 'pass', 'host', 'port'));
return $base . JRoute::_($url, false);
}
}