. * * PHP version 5 * @copyright cgo IT, 2012-2013 * @author Carsten Götzinger (info@cgo-it.de) * @package aeo * @license GNU/LGPL * @filesource */ namespace cgoIT\aeo; use cgoIT\aeo\AeoUtil; use cgoIT\aeo\AeoJavaScript; /** * Class AeoFrontendUtil */ //define('REGEXP_EMAIL_PREFIX', '(\w[-._\w]*\w)\@'); define('REGEXP_EMAIL', '\w[-._\w]*\w@[\d\w][-._\w]*\w\.\w{2,18}'); define('REGEXP_MAILTO_LINK', '/(?P\[^>]+)href\=["\']mailto\:(?P\w[-._\w]*\w)\@(?P\w[-._\w]*\w)\.(?P\w{2,18})(?P\?{0,1}[^"^\']*)["\'](?P[^>]*)\>).*?\<\/a\>/ism'); class AeoFrontendUtil extends \Frontend { /** * Replace default obfuscation, default is 1 * @var int */ protected $replace_standard_obfuscation = 1; /** * Use additional ROT13 encryption, default is 1 * @var int */ protected $use_rot_13 = 1; /** * Virtual path for non javascript users, default is 'contact' * @var string */ protected $virtual_path = 'contact'; /** * Weiterleitungsseite für nicht JavaScript Nutzer * @var string */ protected $jump_to_no_js; /** * Methode zum Verschleiern der angezeigten E-Mail-Adresse im Frontend * @var string */ protected $obfuscation_method; /** * Instance of AEOUtility * @var AEOUtility */ protected $aeo; protected $aeoUtil; /** * Initialize the object * @param array */ public function __construct($arrAttributes=false) { parent::__construct($arrAttributes); if (TL_MODE == 'FE') { global $objPage; $this->aeoUtil = new AeoUtil(); if ($GLOBALS['TL_CONFIG']['aeo_replace_standard_obfuscation'] === true) { $this->use_rot_13 = $GLOBALS['TL_CONFIG']['aeo_use_rot_13']; $this->virtual_path = $GLOBALS['TL_CONFIG']['aeo_virtual_path']; $this->jump_to_no_js = $GLOBALS['TL_CONFIG']['aeo_jump_to_no_js']; $this->obfuscation_method = $GLOBALS['TL_CONFIG']['aeo_obfuscation_method']; $this->aeo = new Aeo(); $this->aeo->setTooltipNoJS($GLOBALS['TL_LANG']['aeo']['tooltip_no_js']); $folder = ''; if (!$GLOBALS['TL_CONFIG']['rewriteURL']) { $folder .= 'index.php/'; } if ($GLOBALS['TL_CONFIG']['addLanguageToUrl']) { $folder .= $objPage->rootLanguage.'/'; } if (in_array('i18nl10n', $this->Config->getActiveModules())) { $this->aeoUtil->fixupCurrentLanguage(); if ($GLOBALS['TL_CONFIG']['i18nl10n_urlParam'] == 'url') { $folder .= $GLOBALS['TL_LANGUAGE'] . '/'; } $folder .= $this->virtual_path.'/'.$GLOBALS['TL_LANGUAGE']; } else { $folder .= $this->virtual_path.'/'.$objPage->rootLanguage; } $this->aeo->setFolder($folder); $this->aeo->setMethod($this->obfuscation_method); if ($this->use_rot_13) { $this->aeo->setROT13(true); } else { $this->aeo->setROT13(false); } $urlSuffix = ''; if (strlen($GLOBALS['TL_CONFIG']['urlSuffix']) > 0) { if (in_array('i18nl10n', $this->Config->getActiveModules()) && $GLOBALS['TL_CONFIG']['i18nl10n_urlParam'] == 'alias') { $this->aeoUtil->fixupCurrentLanguage(); $urlSuffix .= '.'.$GLOBALS['TL_LANGUAGE']; } $urlSuffix .= $GLOBALS['TL_CONFIG']['urlSuffix']; } $objResult = $this->Database->prepare("SELECT * FROM tl_page WHERE id=?") ->limit(1) ->execute($objPage->id) ->fetchAssoc(); $url = $this->generateFrontendUrl($objResult); if (strstr($url, '?')) { $arrParams = explode('?', $url); if (count($arrParams) == 2) { $arrParamValues = explode('&', $arrParams[1]); $added = false; foreach ($arrParamValues as $param) { if (!strstr($param, 'id=')) { $urlSuffix .= ($added ? '&' : '?').$param; $added = true; } } } } $this->aeo->urlSuffix = $urlSuffix; $this->includeStaticJs(); } else { // global deaktiviert $this->replace_standard_obfuscation = 0; } } } /** * Fügt dem Frontend-Modul ggf. die stop- und continue-Marker hinzu. * * @param unknown_type $objRow * @param unknown_type $strBuffer */ public function aeoGetFrontendModule($objRow, $strBuffer) { return $this->checkAeoDisabled($objRow, $strBuffer); } /** * Fügt dem Inhaltelement ggf. die stop- und continue-Marker hinzu. * * @param unknown_type $objRow * @param unknown_type $strBuffer */ public function aeoGetContentElement($objRow, $strBuffer) { return $this->checkAeoDisabled($objRow, $strBuffer); } /** * Verschleierung der E-Mail-Adressen. * * @param $strContent * @param $strTemplate */ public function obfuscateEmails($strContent, $strTemplate) { global $objPage; $objPage2 = $this->getPageDetails($objPage->id); $redirectPageId = $this->aeoUtil->getRedirectPageForLanguage(deserialize($this->jump_to_no_js), $objPage2->rootLanguage); if (TL_MODE == 'FE' && $this->replace_standard_obfuscation && $objPage2->id != $redirectPageId) { $strContent = $this->aeoReplaceInsertTags($strContent); $this->import('StringUtil'); // erst alle Mailadresse decodieren (Verschleierung von Contao rückgänging machen) $intOffset = 0; $arrNoAeoAreas = $this->aeo->getNoAeoAreas($strContent); while (preg_match('/(&#[x]?\w+;)+/i', $strContent, $arrEmail, PREG_OFFSET_CAPTURE, $intOffset)) { if ($this->aeo->isEnabled($arrEmail[0][1], $arrNoAeoAreas)) { $strDecodedMail = $this->StringUtil->decodeEntities($arrEmail[0][0]); if (preg_match('/mailto:'.REGEXP_EMAIL.'/i', $strDecodedMail)) { // erst alle verlinkten eMail-Adressen entschleiern $strContent = $this->aeo->str_replace($arrEmail[0][0], $strDecodedMail, $strContent, $arrEmail[0][1]); $intOffset = $arrEmail[0][1] + strlen($strDecodedMail); // Array muss neu aufgebaut werden, da sich die offsets geändert haben $arrNoAeoAreas = $this->aeo->getNoAeoAreas($strContent); } else if (preg_match('/'.REGEXP_EMAIL.'/i', $strDecodedMail)) { // dann alle nicht verlinkten eMail-Adressen entschleiern $strContent = $this->aeo->str_replace($arrEmail[0][0], $strDecodedMail, $strContent, $arrEmail[0][1]); $intOffset = $arrEmail[0][1] + strlen($strDecodedMail); // Array muss neu aufgebaut werden, da sich die offsets geändert haben $arrNoAeoAreas = $this->aeo->getNoAeoAreas($strContent); } else { $intOffset = $arrEmail[0][1] + 1; } } else { $intOffset = $arrEmail[0][1] + 1; } } $strContent = $this->aeo->prepareOutput($strContent, $objPage2->id); } return $strContent; } private function includeStaticJs() { global $objPage; $objPage2 = $this->getPageDetails($objPage); $objLayout = $this->Database->prepare("SELECT * FROM tl_layout WHERE id=?") ->limit(1) ->execute($objPage2->layout) ->fetchAssoc(); $GLOBALS['TL_JAVASCRIPT'][] = 'bundles/cgoitaeo/js/onReadyAeo.min.js|static'; $GLOBALS['TL_JAVASCRIPT'][] = 'bundles/cgoitaeo/js/aeo.min.js|static'; } /** * Zusätzliches InsertTag für E-Mail-Verschleierung * {{aeo-email::value@domain.tld::}} : Angabe der Verschleierungmethode im Frontend. * Mögliche Werte: * - none = keine Verschleierung * - rtl = Right-to-Left * - nullspan = Null-Span * - shorten = Verkürzung */ private function aeoReplaceInsertTags($strContent) { // Preserve insert tags if ($GLOBALS['TL_CONFIG']['disableInsertTags']) { return parent::restoreBasicEntities($strBuffer); } $arrPossibleValues = array('none', 'rtl', 'nullspan', 'shorten'); $intOffset = 0; $arrNoAeoAreas = $this->aeo->getNoAeoAreas($strContent); while (preg_match('/\{\{([^\}]+)\}\}/', $strContent, $arrTags, PREG_OFFSET_CAPTURE, $intOffset)) { global $objPage; $position = $arrTags[0][1]; $arrTag = explode('::', $arrTags[1][0]); // aeo-email-Tag ohne Verschleierungsmethode angegeben --> zu normalem email-Tag umwandeln if (is_array($arrTag) && count($arrTag) == 2 && $arrTag[0] === 'aeo-email') { $strValue = '{{email::'.$arrTag[1].'}}'; $strContent = $this->aeo->str_replace($arrTags[0][0], $strValue, $strContent, $position); $intOffset += strlen($strValue); continue; } // Es handelt sich nicht um ein aeo-email-Tag if(!is_array($arrTag) || count($arrTag) != 3 || $arrTag[0] !== 'aeo-email' || !in_array($arrTag[2], $arrPossibleValues, true)) { $intOffset += strlen($arrTags[0][0]); continue; } $this->import('StringUtil'); if ($GLOBALS['TL_CONFIG']['aeo_replace_standard_obfuscation'] === true && $this->aeo->isEnabled($position, $arrNoAeoAreas)) { // AEO aktiv und Bereich nicht auf deaktiviert gestellt $strValue = $this->aeo->obfuscateSingle($this->StringUtil->decodeEntities($arrTag[1]), $objPage->id, $arrTag[2]); $strContent = $this->aeo->str_replace($arrTags[0][0], $strValue, $strContent, $position); $intOffset += strlen($strValue); } else { // AEO nicht aktiv oder Bereich auf deaktiviert gestellt $strEmail = $this->StringUtil->encodeEmail($this->StringUtil->decodeEntities($arrTag[1])); $strValue = '' . $this->StringUtil->encodeEmail(preg_replace('/\?.*$/', '', $strEmail)) . ''; $strContent = $this->aeo->str_replace($arrTags[0][0], $strValue, $strContent, $position); $intOffset += strlen($strValue); } // Positionen aktualisieren, da sich die Positionen geändert haben $arrNoAeoAreas = $this->aeo->getNoAeoAreas($strContent); } // normale Methode aufrufen $strContent = parent::replaceInsertTags($strContent); return $strContent; } /** * Einfügen der stop- und continue-Marker * * @param $objRow * @param $strBuffer */ private function checkAeoDisabled($objRow, $strBuffer) { if ($objRow->aeo_disable == '1') { $strBuffer = "\n". $strBuffer ."\n"; } return $strBuffer; } } class Aeo extends \System { var $buffer; var $folder = "contact"; var $tooltip_js_off; var $rot13 = true; var $urlSuffix = ''; var $method; var $i = 2; /** * Verschleierung der E-Mail-Adressen. Parsen des Codes einer Seite und ersetzen der normalen * E-Mail-Links durch verschleierte. * * @param $output * @param $pageId */ function prepareOutput($output, $pageId) { // Erst alle verlinkten eMail-Adressen verschleiern $arrNoAeoAreas = $this->getNoAeoAreas($output); $intOffset = 0; while(preg_match(REGEXP_MAILTO_LINK, $output, $arrLink, PREG_OFFSET_CAPTURE, $intOffset)) { if ($this->isEnabled($arrLink['all'][1], $arrNoAeoAreas)) { $output = $this->obfuscate($arrLink, $output, $pageId, $this->urlSuffix == null ? '' : $this->urlSuffix, $arrLink['all'][1], $intOffset); // Array muss neu aufgebaut werden, da sich die offsets geändert haben $arrNoAeoAreas = $this->getNoAeoAreas($output); } else { $intOffset = strlen($arrLink['all'][0]) + $arrLink['all'][1]; } } // jetzt alle nicht verlinkten eMail-Adressen verschleiern. $arrNoAeoAreas = $this->getNoAeoAreas($output); $intOffset = 0; while(preg_match('/'.REGEXP_EMAIL.'/esm', $output, $arrNonLinkedeMail, PREG_OFFSET_CAPTURE, $intOffset)) { if ($this->isEnabled($arrNonLinkedeMail[0][1], $arrNoAeoAreas)) { $output = $this->str_replace($arrNonLinkedeMail[0][0], $this->obfuscateWithMethod($arrNonLinkedeMail[0][0], $this->method, false, $arrNonLinkedeMail[0][1], $intOffset), $output, $arrNonLinkedeMail[0][1]); // Array muss neu aufgebaut werden, da sich die offsets geändert haben $arrNoAeoAreas = $this->getNoAeoAreas($output); } else { $intOffset = strlen($arrNonLinkedeMail[0][0]) + $arrNonLinkedeMail[0][1]; } } $close_head = array("", ""); $output = str_replace($close_head, $this->dropJS() . "\n", $output); if ($this->method != 'shorten') { $output = str_replace($close_head, $this->dropCSS() . "\n", $output); } return $this->restoreBasisEntities($output); } /** * Verschleierung eines einzelnen Links. Dazu kann die zu verwendendet Verschleierungsmethode * angegeben werden. * * @param $email * @param $pageId * @param $method */ function obfuscateSingle($email, $pageId, $method) { $arrEmail = explode('@', $email); $strDomain = substr($arrEmail[1], 0, strrpos($arrEmail[1], '.')); $strTld = substr($arrEmail[1], strrpos($arrEmail[1], '.') + 1); $uId = microtime(); $uId = substr($uId, 0, strpos($uId, ' ')); $strLink = 'folder.'/aeo/'. ($this->rot13 ? str_rot13($arrEmail[0]) : $arrEmail[0]).'+'. ($this->rot13 ? str_rot13($strDomain) : $strDomain).'+'. ($this->rot13 ? str_rot13($strTld) : $strTld).'+'. $pageId.($this->urlSuffix == null ? '' : $this->urlSuffix). '" rel="nofollow" name="'.uniqid('aeo-obfuscated-', true).'" class="email aeo">'; if ($method !== 'none') { // passendes CSS hinzufügen $strLink .= $this->obfuscateWithMethod($arrEmail[0], $method, true, 0, 0).'@'.$strDomain.'.'.$strTld; } else { $this->import('StringUtil'); $strLink .= $this->StringUtil->encodeEmail($email); } $strLink .= ''; return $this->createSpecialEntities($strLink); } /** * Aufbau des verschleierten E-Mail-Links * * @param $arrLink * @param $output * @param $pageId * @param $urlSuffix * @param $intPos * @param $intOffset */ function obfuscate($arrLink, $output, $pageId, $urlSuffix, $intPos, &$intOffset) { $newLink = 'getOrigValue('title', $arrLink); // Originalen class auswerten $originalClass = $this->getOrigValue('class', $arrLink); if (strpos($originalClass, 'aeo')) { // Adresse wurde bereits behandelt return $output; } if (strlen(trim($arrLink['before'][0]))) { $newLink .= ' '.trim($arrLink['before'][0]); } if (strlen(trim($arrLink['after'][0]))) { $newLink .= ' '.trim($arrLink['after'][0]); } if (strlen($originalTitle)) { $newLink .= ' title="'.$originalTitle.'"'; if (strlen($originalClass)) { $newLink .= ' class="'.$originalClass.' aeo-with-title"'; } else { $newLink .= ' class="aeo-with-title"'; } } else { $newLink .= ' title="'.$this->tooltip_js_off.'"'; if (strlen($originalClass)) { $newLink .= ' class="'.$originalClass.'"'; } } $strParams = ''; if (strlen($arrLink['params'][0]) && '?' === substr($arrLink['params'][0], 0, 1)) { $strParams = base64_encode($arrLink['params'][0]); } $newLink .= ' href="'.$this->folder.'/aeo/'. ($this->rot13 ? str_rot13($arrLink['email'][0]) : $arrLink['email'][0]).'+'. ($this->rot13 ? str_rot13($arrLink['domain'][0]) : $arrLink['domain'][0]).'+'. ($this->rot13 ? str_rot13($arrLink['suffix'][0]) : $arrLink['suffix'][0]).'+'. $pageId.'+'.$strParams.$urlSuffix.'" rel="nofollow" name="aeo-obfuscated-'.$intPos.'"'; $newLink .= '>'; $output = $this->str_replace($arrLink['all'][0], $newLink, $output, $intOffset); $intOffset = $intPos + strlen($newLink); return $output; } /** * Ursprünglichen Wert eines Attributs ermitteln. * * @param $strAttr * @param $arrLink */ function getOrigValue($strAttr, &$arrLink) { $strOriginal = ''; if (stristr($arrLink['before'][0], $strAttr)) { preg_match('/'.$strAttr.'=[\"\'](?P<'.$strAttr.'>.*)[\"\']/i', $arrLink['before'][0], $matches); $strOriginal = $matches[$strAttr]; $arrLink['before'][0] = preg_replace('/(.*)'.$strAttr.'=[\"\'].*[\"\'](.*)/i', '$1 $2', $arrLink['before'][0]); } if (stristr($arrLink['after'][0], $strAttr)) { preg_match('/'.$strAttr.'=[\"\'](?P<'.$strAttr.'>.*)[\"\']/i', $arrLink['after'][0], $matches); $strOriginal = $matches[$strAttr]; $arrLink['after'][0] = preg_replace('/(.*)'.$strAttr.'=[\"\'].*[\"\'](.*)/i', '$1 $2', $arrLink['after'][0]); } return $strOriginal; } function dropJS() { $strContentJs = AeoJavaScript::getContent(str_replace("/", "\/", $this->folder), $this->rot13); $strContentJs = "\n\n"; return $strContentJs; } function dropCSS() { $css = "\n"; return $css; } function setTooltipJS($tooltip) { $this->tooltip_js_on = $tooltip; } function setTooltipNoJS($tooltip) { $this->tooltip_js_off = $tooltip; } function setFolder($folder) { $this->folder = $folder; } function setROT13($rot13) { $this->rot13 = $rot13; } function setMethod($method) { $this->method = $method; } function obfuscateWithMethod($email, $method, $includeCss, $intPos, &$intOffset) { switch ($method) { case 'rtl' : $strEmail = $this->rtl($email, $includeCss); break; case 'nullspan' : $strEmail = $this->nullspan($email, $includeCss); break; default: $strEmail = $this->shorten($email, $includeCss); } // Offset korrigieren $intOffset = $intPos + strlen($strEmail); return $strEmail; } function shorten ($email, $includeCss) { $arrEmail = explode('@', $email); if (strlen ($arrEmail[0]) <= 4) { $email = substr ($arrEmail[0], 0, 1); } else if (strlen ($arrEmail[0]) <= 6) { $email = substr ($arrEmail[0], 0, 3); } else { $email = substr ($arrEmail[0], 0, 4); } return $email.'...'.($includeCss ? '' : '@').$arrEmail[1]; } function rtl ($email, $includeCss) { $strEmail = strrev($email); if ($includeCss) { return ''.$strEmail.''; } return ''.$strEmail.''; } function nullspan ($email, $includeCss) { $arrEmail = explode('@', $email); if (strlen ($arrEmail[0]) <= 4) { $email1 = substr ($arrEmail[0], 0, 1); $email2 = substr ($arrEmail[0], 1); } else if (strlen ($arrEmail[0]) <= 6) { $email1 = substr ($arrEmail[0], 0, 3); $email2 = substr ($arrEmail[0], 3); } else { $email1 = substr ($arrEmail[0], 0, 4); $email2 = substr ($arrEmail[0], 4); } if ($includeCss) { return $email1.'null'.$email2.'@'.$arrEmail[1]; } return $email1.'null'.$email2.'@'.$arrEmail[1]; } function getNoAeoAreas($output) { $arrNoAeoAreas = array(); $intOffset = 0; while (preg_match('//', $output, $arrOuter, PREG_OFFSET_CAPTURE, $intOffset)) { $intOffset = strlen($arrOuter[0][0]) + $arrOuter[0][1]; preg_match('//', $output, $arrInner, PREG_OFFSET_CAPTURE, $intOffset); $arrNoAeoAreas[] = array('start' => $arrOuter[0][1], 'end' => $arrInner[0][1]); $intOffset = strlen($arrInner[0][0]) + $arrInner[0][1]; } return $arrNoAeoAreas; } function isEnabled($intPos, $arrNoAeoAreas) { foreach ($arrNoAeoAreas as $arrDisabledArea) { if ($arrDisabledArea['start'] < $intPos && $arrDisabledArea['end'] > $intPos) { return false; } } return true; } function str_replace($search, $replacement, $subject, $offset) { $mysubject = substr($subject, 0, $offset); $strRest = substr($subject, $offset); $mysubject .= preg_replace('/'.preg_quote($search, '/').'/sm', $replacement, $strRest, 1); return $mysubject; } function createSpecialEntities($strContent) { return str_replace(array('@', '@', '@'), array('[at]', '[at]', '[at]'), $strContent); } function restoreBasisEntities($strContent) { return str_replace(array('[at]'), array('@'), $strContent); } } ?>