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//home/develito/www/tmp/install_6111708fd0097/admin/helpers/visforms.php

<?php
/**
 * @author       Aicha Vack
 * @package      Joomla.Administrator
 * @subpackage   com_visforms
 * @link         http://www.vi-solutions.de 
 * @license      GNU General Public License version 2 or later; see license.txt
 * @copyright    2012 vi-solutions
 * @since        Joomla 1.6
 */

defined('_JEXEC') or die;

class VisformsHelper
{
	public static $extension = 'com_visforms';

/**
	 * Configure the Linkbar.
	 *
	 * @param	string	$vName	The name of the active view.
	 * @param	int	    $fid	The fid of the active view.
	 *
	 * @return	void
	 * @since	1.6
	 */
	public static function addSubmenu($vName, $fid = 0, $saveResult = false) {
		$hasPdf = VisformsAef::checkAEF(VisformsAef::$pdf);
		$canDo = self::getActions();
        JHtmlSidebar::addEntry(
            JText::_('COM_VISFORMS_SUBMENU_CPANEL_LABEL'),
            'index.php?option=com_visforms',
            $vName == 'viscpanel'
        );
		JHtmlSidebar::addEntry(
			JText::_('COM_VISFORMS_SUBMENU_FORMS'),
			'index.php?option=com_visforms&view=visforms',
			$vName == 'visforms'
		);
		if ($canDo->get('core.edit.state')) {
			JHtmlSidebar::addEntry(
				JText::_('COM_VISFORMS_CREATOR'),
				'index.php?option=com_visforms&view=viscreator',
				$vName == 'viscreator'
			);
		}
		if(0 < $fid) {
			$indent = "";
			JHtmlSidebar::addEntry(
				$indent . JText::_('COM_VISFORMS_FORM_FIELDS'),
				'index.php?option=com_visforms&view=visfields&fid=' . $fid,
				$vName == 'visfields'
			);
			if ($hasPdf) {
				JHtmlSidebar::addEntry(
					$indent . JText::_('COM_VISFORMS_PDF_TEMPLATES'),
					'index.php?option=com_visforms&view=vispdfs&fid=' . $fid,
					$vName == 'vispdfs'
				);
			}
			if ($saveResult) {
				JHtmlSidebar::addEntry(
					$indent . JText::_('COM_VISFORMS_VISFORMSDATA_VIEW_DEFAULT_TITLE'),
					'index.php?option=com_visforms&view=visdatas&fid=' . $fid,
					$vName == 'visdatas'
				);
			}
		}
	}

/**
	 * Gets a list of the actions that can be performed.
	 *
	 * @param	int		The category ID.
	 * @param	int		The article ID.
	 *
	 * @return	JObject
	 * @since	1.6
	 */
	public static function getActions($formId = 0, $fieldId = 0) {
		$user	= JFactory::getUser();
		$result	= new JObject;

if (empty($formId) && empty($fieldId)) {
			$assetName = 'com_visforms';
		}
		else if (empty($fieldId)){
			$assetName = 'com_visforms.visform.'.(int) $formId;
		}
		else {
			$assetName = 'com_visforms.visform.'.(int) $formId.'.visfield.'. (int) $fieldId;
		}

$actions = JAccess::getActionsFromFile(JPath::clean(JPATH_ADMINISTRATOR . '/components/com_visforms/access.xml'), "/access/section[@name='component']/");

foreach ($actions as $action) {
			$result->set($action->name,	$user->authorise($action->name, $assetName));
		}

return $result;
	}
    
    /**
	 * Checks if the file can be uploaded
	 *
	 * @param   array   $file  File information
	 * @param   string  $err   An error message to be returned
	 *
	 * @return  boolean
	 *
	 * @since   3.2
	 */
	public static function canUpload($file, $allowedExtensions = "") {
		if (empty($file['name'])) {
			$app = JFactory::getApplication();
			$app->enqueueMessage(JText::_('COM_VISFORMS_ERROR_UPLOAD_INPUT'), 'error');
			return false;
		}

// Media file names should never have executable extensions buried in them.
		$executable = array(
			'exe', 'phtml','java', 'perl', 'py', 'asp','dll', 'go', 'jar',
			'ade', 'adp', 'bat', 'chm', 'cmd', 'com', 'cpl', 'hta', 'ins', 'isp',
			'jse', 'lib', 'mde', 'msc', 'msp', 'mst', 'pif', 'scr', 'sct', 'shb',
			'sys', 'vb', 'vbe', 'vbs', 'vxd', 'wsc', 'wsf', 'wsh'
		);
		$explodedFileName = explode('.', $file['name']);

if (count($explodedFileName) > 2) {
			foreach ($executable as $extensionName) {
                if (in_array($extensionName, $explodedFileName)) {
                    $app = JFactory::getApplication();
					$app->enqueueMessage(JText::_('COM_VISFORMS_ERROR_EXECUTABLE'), 'error');
					return false;
				}
			}
		}

jimport('joomla.filesystem.file');

if ($file['name'] !== JFile::makeSafe($file['name']) || preg_match('/\s/', JFile::makeSafe($file['name']))) {
			$app = JFactory::getApplication();
			$app->enqueueMessage(JText::_('COM_VISFORMS_ERROR_WARNFILENAME'), 'error');
			return false;
		}

$format = strtolower(JFile::getExt($file['name']));
		$allowable = array($allowedExtensions);

if ($format == '' || $format == false || (!in_array($format, $allowable))) {
			$app = JFactory::getApplication();
			$app->enqueueMessage(JText::_('COM_VISFORMS_ERROR_WARNFILETYPE'), 'error');
			return false;
		}

// Max upload size set to 2 MB for Template Manager
		$maxSize = (int) (2 * 1024 * 1024);

if ($maxSize > 0 && (int) $file['size'] > $maxSize) {
			$app = JFactory::getApplication();
			$app->enqueueMessage(JText::_('COM_VISFORMS_ERROR_WARNFILETOOLARGE'), 'error');
			return false;
		}

$xss_check = file_get_contents($file['tmp_name'], false, null, -1, 256);
		$html_tags = array(
			'abbr', 'acronym', 'address', 'applet', 'area', 'audioscope', 'base', 'basefont', 'bdo', 'bgsound', 'big', 'blackface', 'blink', 'blockquote',
			'body', 'bq', 'br', 'button', 'caption', 'center', 'cite', 'code', 'col', 'colgroup', 'comment', 'custom', 'dd', 'del', 'dfn', 'dir', 'div',
			'dl', 'dt', 'em', 'embed', 'fieldset', 'fn', 'font', 'form', 'frame', 'frameset', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'hr', 'html',
			'iframe', 'ilayer', 'img', 'input', 'ins', 'isindex', 'keygen', 'kbd', 'label', 'layer', 'legend', 'li', 'limittext', 'link', 'listing',
			'map', 'marquee', 'menu', 'meta', 'multicol', 'nobr', 'noembed', 'noframes', 'noscript', 'nosmartquotes', 'object', 'ol', 'optgroup', 'option',
			'param', 'plaintext', 'pre', 'rt', 'ruby', 's', 'samp', 'script', 'select', 'server', 'shadow', 'sidebar', 'small', 'spacer', 'span', 'strike',
			'strong', 'style', 'sub', 'sup', 'table', 'tbody', 'td', 'textarea', 'tfoot', 'th', 'thead', 'title', 'tr', 'tt', 'ul', 'var', 'wbr', 'xml',
			'xmp', '!DOCTYPE', '!--'
		);

foreach ($html_tags as $tag) {
			// a tag is '<tagname ', so we need to add < and a space or '<tagname>'
			if (stristr($xss_check, '<' . $tag . ' ') || stristr($xss_check, '<' . $tag . '>')) {
                $app = JFactory::getApplication();
				$app->enqueueMessage(JText::_('COM_VISFORMS_ERROR_WARNIEXSS'), 'error');
				return false;
			}
		}

return true;
	}

public static function addCommonViewStyleCss() {
        $doc = JFactory::getDocument();
        $css =
            ' .icon-visform {background:url(../administrator/components/com_visforms/images/visforms_logo_32.png) no-repeat;}'.
            ' [class^="icon-visform"] {display: block; float: left; height: 32px; line-height: 32px; width: 32px;}';
        $doc->addStyleDeclaration($css);
        $doc->addStyleSheet(JURI::root(true)."/administrator/components/com_visforms/css/visforms.css");
    }

// registry helper functions

public static function registryArrayFromString($settings = '') {
		if (empty($settings)) {
			return array();
		}
		try {
			$registry = new JRegistry;
			$registry->loadString($settings);
			return $registry->toArray();
		}
		catch (RuntimeException $e) {
			return array();
		}
    }

public static function registryStringFromArray($values = array()) {
		if (is_string($values)) {
			return $values;
		}
	    try {
		    $registry = new JRegistry;
		    $registry->loadArray($values);
		    return (string) $registry;
	    }
		catch (RuntimeException $e) {
		    return '';
	    }
    }
	public static function registryObjectFromString($settings = '') {
		if (empty($settings)) {
			return new \stdClass;
		}
		try {
			$registry = new JRegistry;
			$registry->loadString($settings);
			return $registry->toObject();
		}
		catch (RuntimeException $e) {
			return new \stdClass;
		}
    }

// form title functions

public static function showTitleWithPreFix($title) {
        if( !empty($title)) {
            $title = ' - ' . $title;
        }
        JToolbarHelper::title(JText::_('COM_VISFORMS') . $title, 'visform' );
    }

public static function appendTitleAppendixFormat($text) {
        return ' <small><small>[ ' . $text. ' ]</small></small>';
    }

public static function getFormattedServerDateTime ($value, $format = 'Y-m-d H:i:s') {
	    if ($value && $value !== JFactory::getDbo()->getNullDate())
	    {
		    $date = JFactory::getDate($value, 'UTC');
		    $date->setTimezone(new DateTimeZone(JFactory::getConfig()->get('offset')));
		    $value = $date->format($format, true, false);
	    }
	    return $value;
    }

public static function checkValueIsEmpty($test, $type, $checkForEmptyCal = false) {
		switch ($type) {
			case 'calculation' :
				if ($checkForEmptyCal) {
					return self::checkNumberValueIsZero($test);
				} else {
					return false;
				}
			case 'location' :
				return self::checkLocationValueIsEmpty($test);
			default:
				return empty($test);
		}
    }

public static function checkNumberValueIsZero($test) {
	    $number =  str_replace(",", ".", $test);
	    $isZero = (0 == $number) ? true : false;
	    return $isZero;
    }

public static function checkLocationValueIsEmpty($test) {
		if (empty($test)) {
			return true;
		}
		if (($test['lat'] === '') || ($test['lng'] === '')) {
			return true;
		}
		return false;
	}

public static function getDataLogFilename($formid) {
		$logPath           = 'visforms_datalogs';
		return $logPath . '/form_'.$formid . '.php';
	}
}