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@ -81,17 +81,35 @@
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class washtml
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{
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/* Allowed HTML elements (default) */
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static $html_elements = array('a', 'abbr', 'acronym', 'address', 'area', 'b', 'basefont', 'bdo', 'big', 'blockquote', 'br', 'caption', 'center', 'cite', 'code', 'col', 'colgroup', 'dd', 'del', 'dfn', 'dir', 'div', 'dl', 'dt', 'em', 'fieldset', 'font', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'hr', 'i', 'ins', 'label', 'legend', 'li', 'map', 'menu', 'nobr', 'ol', 'p', 'pre', 'q', 's', 'samp', 'small', 'span', 'strike', 'strong', 'sub', 'sup', 'table', 'tbody', 'td', 'tfoot', 'th', 'thead', 'tr', 'tt', 'u', 'ul', 'var', 'wbr', 'img');
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static $html_elements = array('a', 'abbr', 'acronym', 'address', 'area', 'b',
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'basefont', 'bdo', 'big', 'blockquote', 'br', 'caption', 'center',
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'cite', 'code', 'col', 'colgroup', 'dd', 'del', 'dfn', 'dir', 'div', 'dl',
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'dt', 'em', 'fieldset', 'font', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'hr', 'i',
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'ins', 'label', 'legend', 'li', 'map', 'menu', 'nobr', 'ol', 'p', 'pre', 'q',
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's', 'samp', 'small', 'span', 'strike', 'strong', 'sub', 'sup', 'table',
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'tbody', 'td', 'tfoot', 'th', 'thead', 'tr', 'tt', 'u', 'ul', 'var', 'wbr', 'img',
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// form elements
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'button', 'input', 'textarea', 'select', 'option', 'optgroup'
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);
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/* Ignore these HTML tags and their content */
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static $ignore_elements = array('script', 'applet', 'embed', 'object', 'style');
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/* Allowed HTML attributes */
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static $html_attribs = array('name', 'class', 'title', 'alt', 'width', 'height', 'align', 'nowrap', 'col', 'row', 'id', 'rowspan', 'colspan', 'cellspacing', 'cellpadding', 'valign', 'bgcolor', 'color', 'border', 'bordercolorlight', 'bordercolordark', 'face', 'marginwidth', 'marginheight', 'axis', 'border', 'abbr', 'char', 'charoff', 'clear', 'compact', 'coords', 'vspace', 'hspace', 'cellborder', 'size', 'lang', 'dir');
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static $html_attribs = array('name', 'class', 'title', 'alt', 'width', 'height',
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'align', 'nowrap', 'col', 'row', 'id', 'rowspan', 'colspan', 'cellspacing',
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'cellpadding', 'valign', 'bgcolor', 'color', 'border', 'bordercolorlight',
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'bordercolordark', 'face', 'marginwidth', 'marginheight', 'axis', 'border',
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'abbr', 'char', 'charoff', 'clear', 'compact', 'coords', 'vspace', 'hspace',
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'cellborder', 'size', 'lang', 'dir',
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// attributes of form elements
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'type', 'rows', 'cols', 'disabled', 'readonly', 'checked', 'multiple', 'value'
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);
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/* Block elements which could be empty but cannot be returned in short form (<tag />) */
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static $block_elements = array('div', 'p', 'pre', 'blockquote', 'a', 'font', 'center', 'table', 'ul', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'ol', 'dl', 'strong', 'i', 'b');
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static $block_elements = array('div', 'p', 'pre', 'blockquote', 'a', 'font', 'center',
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'table', 'ul', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'ol', 'dl', 'strong', 'i', 'b');
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/* State for linked objects in HTML */
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public $extlinks = false;
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@ -100,7 +118,7 @@ class washtml
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/* Registered callback functions for tags */
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private $handlers = array();
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/* Allowed HTML elements */
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private $_html_elements = array();
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@ -112,7 +130,7 @@ class washtml
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/* Allowed HTML attributes */
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private $_html_attribs = array();
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/* Constructor */
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public function __construct($p = array()) {
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@ -123,13 +141,13 @@ class washtml
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unset($p['html_elements'], $p['html_attribs'], $p['ignore_elements'], $p['block_elements']);
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$this->config = $p + array('show_washed'=>true, 'allow_remote'=>false, 'cid_map'=>array());
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}
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/* Register a callback function for a certain tag */
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public function add_callback($tagName, $callback)
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{
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$this->handlers[$tagName] = $callback;
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}
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/* Check CSS style */
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private function wash_style($style) {
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$s = '';
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@ -143,7 +161,7 @@ class washtml
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preg_match('/^(url\(\s*[\'"]?([^\'"\)]*)[\'"]?\s*\)'./*1,2*/
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'|rgb\(\s*[0-9]+\s*,\s*[0-9]+\s*,\s*[0-9]+\s*\)'.
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'|-?[0-9.]+\s*(em|ex|px|cm|mm|in|pt|pc|deg|rad|grad|ms|s|hz|khz|%)?'.
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'|#[0-9a-f]{3,6}|[a-z0-9\-]+'.
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'|#[0-9a-f]{3,6}|[a-z0-9", -]+'.
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')\s*/i', $str, $match)) {
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if ($match[2]) {
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if (($src = $this->config['cid_map'][$match[2]])
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@ -160,8 +178,9 @@ class washtml
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$value .= ' url('.htmlspecialchars($match[2], ENT_QUOTES).')';
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}
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}
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else if ($match[0] != 'url' && $match[0] != 'rbg') //whitelist ?
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else if ($match[0] != 'url' && $match[0] != 'rgb') //whitelist ?
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$value .= ' ' . $match[0];
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$str = substr($str, strlen($match[0]));
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}
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if ($value)
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@ -182,8 +201,10 @@ class washtml
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if (isset($this->_html_attribs[$key]) ||
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($key == 'href' && preg_match('/^(http:|https:|ftp:|mailto:|#).+/i', $value)))
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$t .= ' ' . $key . '="' . htmlspecialchars($value, ENT_QUOTES) . '"';
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else if ($key == 'style' && ($style = $this->wash_style($value)))
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$t .= ' style="' . $style . '"';
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else if ($key == 'style' && ($style = $this->wash_style($value))) {
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$quot = strpos($style, '"') !== false ? "'" : '"';
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$t .= ' style=' . $quot . $style . $quot;
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}
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else if ($key == 'background' || ($key == 'src' && strtolower($node->tagName) == 'img')) { //check tagName anyway
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if (($src = $this->config['cid_map'][$value])
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|| ($src = $this->config['cid_map'][$this->config['base_url'].$value])) {
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alecpl
13 years ago