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<?php |
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/** |
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* sysPass |
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* |
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* @author nuxsmin |
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* @link https://syspass.org |
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* @copyright 2012-2019, Rubén Domínguez nuxsmin@$syspass.org |
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* |
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* This file is part of sysPass. |
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* |
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* sysPass is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* sysPass is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with sysPass. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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namespace SP\Html; |
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defined('APP_ROOT') || die(); |
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/** |
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* Esta clase es la encargada de mostrar el HTML |
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*/ |
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final class Html |
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{ |
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/** |
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* Limpia los datos recibidos de un formulario. |
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* |
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* @param string $data con los datos a limpiar |
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* |
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* @return false|string con los datos limpiados |
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*/ |
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public static function sanitize(&$data) |
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{ |
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if (empty($data)) { |
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return $data; |
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} |
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if (is_array($data)) { |
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array_walk_recursive($data, '\SP\Html\Html::sanitize'); |
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} else { |
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$data = strip_tags($data); |
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// Fix &entity\n; |
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$data = str_replace(['&', '<', '>'], ['&amp;', '&lt;', '&gt;'], $data); |
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$data = preg_replace('/(&#*\w+)[\x00-\x20]+;/u', '$1;', $data); |
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$data = preg_replace(/** @lang RegExp */ |
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'/(&#x*[0-9A-F]+);*/iu', '$1;', $data); |
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$data = html_entity_decode($data, ENT_COMPAT, 'UTF-8'); |
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// Remove any attribute starting with "on" or xmlns |
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$data = preg_replace(/** @lang RegExp */ |
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'#(<[^>]+?[\x00-\x20\x2f"\'])(?:on|xmlns)[^>]*+>#iu', '$1>', $data); |
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// Remove javascript: and vbscript: protocols |
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$data = preg_replace(/** @lang RegExp */ |
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'#([a-z]*)[\x00-\x20]*=[\x00-\x20]*([`\'"]*)[\x00-\x20]*j[\x00-\x20]*a[\x00-\x20]*v[\x00-\x20]*a[\x00-\x20]*s[\x00-\x20]*c[\x00-\x20]*r[\x00-\x20]*i[\x00-\x20]*p[\x00-\x20]*t[\x00-\x20]*:#iu', '$1=$2nojavascript...', $data); |
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$data = preg_replace(/** @lang RegExp */ |
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'#([a-z]*)[\x00-\x20]*=([\'"]*)[\x00-\x20]*v[\x00-\x20]*b[\x00-\x20]*s[\x00-\x20]*c[\x00-\x20]*r[\x00-\x20]*i[\x00-\x20]*p[\x00-\x20]*t[\x00-\x20]*:#iu', '$1=$2novbscript...', $data); |
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$data = preg_replace(/** @lang RegExp */ |
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'#([a-z]*)[\x00-\x20]*=([\'"]*)[\x00-\x20]*-moz-binding[\x00-\x20]*:#u', '$1=$2nomozbinding...', $data); |
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// Only works in IE: <span style="width: expression(alert('Ping!'));"></span> |
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$data = preg_replace(/** @lang RegExp */ |
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'#(<[^>]+?)style[\x00-\x20]*=[\x00-\x20]*[`\'"]*.*?expression[\x00-\x20]*\([^>]*+>#i', '$1>', $data); |
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$data = preg_replace(/** @lang RegExp */ |
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'#(<[^>]+?)style[\x00-\x20]*=[\x00-\x20]*[`\'"]*.*?behaviour[\x00-\x20]*\([^>]*+>#i', '$1>', $data); |
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$data = preg_replace(/** @lang RegExp */ |
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'#(<[^>]+?)style[\x00-\x20]*=[\x00-\x20]*[`\'"]*.*?s[\x00-\x20]*c[\x00-\x20]*r[\x00-\x20]*i[\x00-\x20]*p[\x00-\x20]*t[\x00-\x20]*:*[^>]*+>#iu', '$1>', $data); |
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// Remove namespaced elements (we do not need them) |
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$data = preg_replace(/** @lang RegExp */ |
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'#</*\w+:\w[^>]*+>#i', '', $data); |
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do { |
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// Remove really unwanted tags |
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$old_data = $data; |
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$data = preg_replace(/** @lang RegExp */ |
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'#</*(?:applet|b(?:ase|gsound|link)|embed|frame(?:set)?|i(?:frame|layer)|l(?:ayer|ink)|meta|object|s(?:cript|tyle)|title|xml)[^>]*+>#i', '', $data); |
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} while ($old_data !== $data); |
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} |
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return $data; |
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} |
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/** |
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* Truncar un texto a una determinada longitud. |
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* |
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* @param string $text la cadena a truncar |
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* @param int $limit la longitud máxima de la cadena |
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* @param string $ellipsis |
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* |
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* @return string con el texto truncado |
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* |
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* @link http://www.pjgalbraith.com/truncating-text-html-with-php/ |
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*/ |
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public static function truncate($text, $limit, $ellipsis = '...') |
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{ |
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if (mb_strlen($text) > $limit) { |
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return trim(mb_substr($text, 0, $limit)) . $ellipsis; |
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} |
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return $text; |
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} |
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/** |
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* Convertir un color RGB a HEX |
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* From: http://bavotasan.com/2011/convert-hex-color-to-rgb-using-php/ |
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* |
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* @param array $rgb con color en RGB |
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* |
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* @return string |
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*/ |
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public static function rgb2hex(array $rgb) |
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{ |
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$hex = "#"; |
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foreach ($rgb as $val) { |
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$hex .= str_pad(dechex($val), 2, "0", STR_PAD_LEFT); |
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} |
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return $hex; |
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} |
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/** |
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* Devolver una cadena con el tag HTML strong. |
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* |
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* @param string $text con la cadena de texto |
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* |
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* @return string |
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*/ |
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public static function strongText($text) |
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{ |
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return '<strong>' . $text . '</strong>'; |
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} |
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/** |
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* Devolver un link HTML. |
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* |
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* @param string $text con la cadena de texto |
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* @param string $link con el destino del enlace |
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* @param string $title con el título del enlace |
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* @param string $attribs con atributos del enlace |
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* |
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* @return string |
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*/ |
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public static function anchorText($text, $link = null, $title = null, $attribs = '') |
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{ |
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$alink = $link !== null ? $link : $text; |
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$atitle = $title !== null ? $title : $text; |
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return sprintf('<a href="%s" title="%s" %s>%s</a>', $alink, $atitle, $attribs, $text); |
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} |
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/** |
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* Strips out HTML tags preserving some spaces |
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* |
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* @param $text |
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* |
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* @return string |
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*/ |
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public static function stripTags(string $text): string |
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{ |
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if (empty($text)) { |
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return $text; |
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} |
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// Replace tags, then new lines, tabs and return chars, and then 2 or more spaces |
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return trim(preg_replace(['/<[^>]*>/', '/[\n\t\r]+/', '/\s{2,}/'], ' ', $text)); |
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} |
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} |
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nuxsmin /
sysPass
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