| | |
|---|
| | | 'tbody', 'td', 'tfoot', 'th', 'thead', 'tr', 'tt', 'u', 'ul', 'var', 'wbr', 'img', |
|---|
| | | 'video', 'source', |
|---|
| | | // form elements |
|---|
| | | 'button', 'input', 'textarea', 'select', 'option', 'optgroup' |
|---|
| | | 'button', 'input', 'textarea', 'select', 'option', 'optgroup', |
|---|
| | | // SVG |
|---|
| | | 'svg', 'altglyph', 'altglyphdef', 'altglyphitem', 'animate', 'animatecolor', |
|---|
| | | 'animatemotion', 'animatetransform', 'circle', 'clippath', 'defs', 'desc', |
|---|
| | | 'ellipse', 'font', 'g', 'glyph', 'glyphref', 'hkern', 'image', 'line', |
|---|
| | | 'lineargradient', 'marker', 'mask', 'mpath', 'path', 'pattern', |
|---|
| | | 'polygon', 'polyline', 'radialgradient', 'rect', 'set', 'stop', 'switch', 'symbol', |
|---|
| | | 'text', 'textpath', 'tref', 'tspan', 'use', 'view', 'vkern', 'filter', |
|---|
| | | // SVG Filters |
|---|
| | | 'feblend', 'fecolormatrix', 'fecomponenttransfer', 'fecomposite', |
|---|
| | | 'feconvolvematrix', 'fediffuselighting', 'fedisplacementmap', |
|---|
| | | 'feflood', 'fefunca', 'fefuncb', 'fefuncg', 'fefuncr', 'fegaussianblur', |
|---|
| | | 'feimage', 'femerge', 'femergenode', 'femorphology', 'feoffset', |
|---|
| | | 'fespecularlighting', 'fetile', 'feturbulence', |
|---|
| | | ); |
|---|
| | | |
|---|
| | | /* Ignore these HTML tags and their content */ |
|---|
| | |
|---|
| | | 'abbr', 'char', 'charoff', 'clear', 'compact', 'coords', 'vspace', 'hspace', |
|---|
| | | 'cellborder', 'size', 'lang', 'dir', 'usemap', 'shape', 'media', |
|---|
| | | // attributes of form elements |
|---|
| | | 'type', 'rows', 'cols', 'disabled', 'readonly', 'checked', 'multiple', 'value' |
|---|
| | | 'type', 'rows', 'cols', 'disabled', 'readonly', 'checked', 'multiple', 'value', |
|---|
| | | // SVG |
|---|
| | | 'accent-height', 'accumulate', 'additivive', 'alignment-baseline', |
|---|
| | | 'ascent', 'attributename', 'attributetype', 'azimuth', 'basefrequency', 'baseprofile', |
|---|
| | | 'baseline-shift', 'begin', 'bias', 'by', 'clip', 'clip-path', 'clip-rule', |
|---|
| | | 'color', 'color-interpolation', 'color-interpolation-filters', 'color-profile', |
|---|
| | | 'color-rendering', 'cx', 'cy', 'd', 'dx', 'dy', 'diffuseconstant', 'direction', |
|---|
| | | 'display', 'divisor', 'dur', 'edgemode', 'elevation', 'end', 'fill', 'fill-opacity', |
|---|
| | | 'fill-rule', 'filter', 'flood-color', 'flood-opacity', 'font-family', 'font-size', |
|---|
| | | 'font-size-adjust', 'font-stretch', 'font-style', 'font-variant', 'font-weight', |
|---|
| | | 'fx', 'fy', 'g1', 'g2', 'glyph-name', 'glyphref', 'gradientunits', 'gradienttransform', |
|---|
| | | 'image-rendering', 'in', 'in2', 'k', 'k1', 'k2', 'k3', 'k4', 'kerning', 'keypoints', |
|---|
| | | 'keysplines', 'keytimes', 'lengthadjust', 'letter-spacing', 'kernelmatrix', |
|---|
| | | 'kernelunitlength', 'lighting-color', 'local', 'marker-end', 'marker-mid', |
|---|
| | | 'marker-start', 'markerheight', 'markerunits', 'markerwidth', 'maskcontentunits', |
|---|
| | | 'maskunits', 'max', 'mask', 'mode', 'min', 'numoctaves', 'offset', 'operator', |
|---|
| | | 'opacity', 'order', 'orient', 'orientation', 'origin', 'overflow', 'paint-order', |
|---|
| | | 'path', 'pathlength', 'patterncontentunits', 'patterntransform', 'patternunits', |
|---|
| | | 'points', 'preservealpha', 'r', 'rx', 'ry', 'radius', 'refx', 'refy', 'repeatcount', |
|---|
| | | 'repeatdur', 'restart', 'rotate', 'scale', 'seed', 'shape-rendering', 'specularconstant', |
|---|
| | | 'specularexponent', 'spreadmethod', 'stddeviation', 'stitchtiles', 'stop-color', |
|---|
| | | 'stop-opacity', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', |
|---|
| | | 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke', 'stroke-width', |
|---|
| | | 'surfacescale', 'targetx', 'targety', 'transform', 'text-anchor', 'text-decoration', |
|---|
| | | 'text-rendering', 'textlength', 'u1', 'u2', 'unicode', 'values', 'viewbox', |
|---|
| | | 'visibility', 'vert-adv-y', 'version', 'vert-origin-x', 'vert-origin-y', 'word-spacing', |
|---|
| | | 'wrap', 'writing-mode', 'xchannelselector', 'ychannelselector', 'x', 'x1', 'x2', |
|---|
| | | 'xmlns', 'y', 'y1', 'y2', 'z', 'zoomandpan', |
|---|
| | | // XML |
|---|
| | | 'xml:id', 'xlink:title' |
|---|
| | | ); |
|---|
| | | |
|---|
| | | /* Elements which could be empty and be returned in short form (<tag />) */ |
|---|
| | | static $void_elements = array('area', 'base', 'br', 'col', 'command', 'embed', 'hr', |
|---|
| | | 'img', 'input', 'keygen', 'link', 'meta', 'param', 'source', 'track', 'wbr' |
|---|
| | | 'img', 'input', 'keygen', 'link', 'meta', 'param', 'source', 'track', 'wbr', |
|---|
| | | // SVG |
|---|
| | | 'altglyph', 'altglyphdef', 'altglyphitem', 'animate', 'animatecolor', |
|---|
| | | 'animatemotion', 'animatetransform', 'circle', 'clippath', 'defs', 'desc', |
|---|
| | | 'ellipse', 'font', 'g', 'glyph', 'glyphref', 'hkern', 'image', 'line', |
|---|
| | | 'lineargradient', 'marker', 'mask', 'mpath', 'path', 'pattern', |
|---|
| | | 'polygon', 'polyline', 'radialgradient', 'rect', 'set', 'stop', 'switch', 'symbol', |
|---|
| | | 'text', 'textpath', 'tref', 'tspan', 'use', 'view', 'vkern', 'filter', |
|---|
| | | ); |
|---|
| | | |
|---|
| | | /* Attributes that may contain insecure content */ |
|---|
| | | static $insecure_attribs = array('href', 'to', 'from'); |
|---|
| | | |
|---|
| | | /* State for linked objects in HTML */ |
|---|
| | | public $extlinks = false; |
|---|
| | |
|---|
| | | */ |
|---|
| | | public function __construct($p = array()) |
|---|
| | | { |
|---|
| | | $this->_html_elements = array_flip((array)$p['html_elements']) + array_flip(self::$html_elements) ; |
|---|
| | | $this->_html_attribs = array_flip((array)$p['html_attribs']) + array_flip(self::$html_attribs); |
|---|
| | | $this->_ignore_elements = array_flip((array)$p['ignore_elements']) + array_flip(self::$ignore_elements); |
|---|
| | | $this->_void_elements = array_flip((array)$p['void_elements']) + array_flip(self::$void_elements); |
|---|
| | | $this->_html_elements = array_flip((array)$p['html_elements']) + array_flip(self::$html_elements); |
|---|
| | | $this->_html_attribs = array_flip((array)$p['html_attribs']) + array_flip(self::$html_attribs); |
|---|
| | | $this->_insecure_attribs = array_flip((array)$p['insecure_attribs']) + array_flip(self::$insecure_attribs); |
|---|
| | | $this->_ignore_elements = array_flip((array)$p['ignore_elements']) + array_flip(self::$ignore_elements); |
|---|
| | | $this->_void_elements = array_flip((array)$p['void_elements']) + array_flip(self::$void_elements); |
|---|
| | | |
|---|
| | | unset($p['html_elements'], $p['html_attribs'], $p['ignore_elements'], $p['void_elements']); |
|---|
| | | |
|---|
| | |
|---|
| | | private function wash_style($style) |
|---|
| | | { |
|---|
| | | $result = array(); |
|---|
| | | |
|---|
| | | // Remove unwanted white-space characters so regular expressions below work better |
|---|
| | | $style = preg_replace('/[\n\r\s\t]+/', ' ', $style); |
|---|
| | | |
|---|
| | | foreach (explode(';', $style) as $declaration) { |
|---|
| | | if (preg_match('/^\s*([a-z\-]+)\s*:\s*(.*)\s*$/i', $declaration, $match)) { |
|---|
| | |
|---|
| | | */ |
|---|
| | | private function wash_attribs($node) |
|---|
| | | { |
|---|
| | | $t = ''; |
|---|
| | | $t = ''; |
|---|
| | | $washed = ''; |
|---|
| | | |
|---|
| | | foreach ($node->attributes as $key => $plop) { |
|---|
| | | $key = strtolower($key); |
|---|
| | | $value = $node->getAttribute($key); |
|---|
| | | foreach ($node->attributes as $name => $attr) { |
|---|
| | | $key = strtolower($name); |
|---|
| | | $value = $attr->nodeValue; |
|---|
| | | |
|---|
| | | if (isset($this->_html_attribs[$key]) || |
|---|
| | | ($key == 'href' && ($value = trim($value)) |
|---|
| | | (isset($this->_insecure_attribs[$key]) |
|---|
| | | && ($value = trim($value)) |
|---|
| | | && !preg_match('!^(javascript|vbscript|data:text)!i', $value) |
|---|
| | | && preg_match('!^([a-z][a-z0-9.+-]+:|//|#).+!i', $value)) |
|---|
| | | ) { |
|---|
| | | $t .= ' ' . $key . '="' . htmlspecialchars($value, ENT_QUOTES) . '"'; |
|---|
| | | $t .= ' ' . $attr->nodeName . '="' . htmlspecialchars($value, ENT_QUOTES) . '"'; |
|---|
| | | } |
|---|
| | | else if ($key == 'style' && ($style = $this->wash_style($value))) { |
|---|
| | | // replace double quotes to prevent syntax error and XSS issues (#1490227) |
|---|
| | | $t .= ' style="' . str_replace('"', '"', $style) . '"'; |
|---|
| | | } |
|---|
| | | else if ($key == 'background' |
|---|
| | | else if ($key == 'background' || $key == 'href' |
|---|
| | | || ($key == 'src' && preg_match('/^(img|source)$/i', $node->tagName)) |
|---|
| | | || ($key == 'poster' && strtolower($node->tagName) == 'video') |
|---|
| | | ) { |
|---|
| | |
|---|
| | | } |
|---|
| | | } |
|---|
| | | else { |
|---|
| | | $washed .= ($washed ? ' ' : '') . $key; |
|---|
| | | $washed .= ($washed ? ' ' : '') . $attr->nodeName; |
|---|
| | | } |
|---|
| | | } |
|---|
| | | |
|---|
| | |
|---|
| | | $dump = ''; |
|---|
| | | |
|---|
| | | do { |
|---|
| | | switch($node->nodeType) { |
|---|
| | | switch ($node->nodeType) { |
|---|
| | | case XML_ELEMENT_NODE: //Check element |
|---|
| | | $tagName = strtolower($node->tagName); |
|---|
| | | if ($callback = $this->handlers[$tagName]) { |
|---|
| | |
|---|
| | | } |
|---|
| | | else if (isset($this->_html_elements[$tagName])) { |
|---|
| | | $content = $this->dumpHtml($node, $level); |
|---|
| | | $dump .= '<' . $tagName . $this->wash_attribs($node) . |
|---|
| | | ($content === '' && isset($this->_void_elements[$tagName]) ? ' />' : ">$content</$tagName>"); |
|---|
| | | $dump .= '<' . $tagName; |
|---|
| | | |
|---|
| | | if ($tagName == 'svg') { |
|---|
| | | $xpath = new DOMXPath($node->ownerDocument); |
|---|
| | | foreach ($xpath->query('namespace::*') as $ns) { |
|---|
| | | if ($ns->nodeName != 'xmlns:xml') { |
|---|
| | | $dump .= ' ' . $ns->nodeName . '="' . $ns->nodeValue . '"'; |
|---|
| | | } |
|---|
| | | } |
|---|
| | | } |
|---|
| | | |
|---|
| | | $dump .= $this->wash_attribs($node); |
|---|
| | | |
|---|
| | | if ($content === '' && isset($this->_void_elements[$tagName])) { |
|---|
| | | $dump .= ' />'; |
|---|
| | | } |
|---|
| | | else { |
|---|
| | | $dump .= ">$content</$tagName>"; |
|---|
| | | } |
|---|
| | | } |
|---|
| | | else if (isset($this->_ignore_elements[$tagName])) { |
|---|
| | | $dump .= '<!-- ' . htmlspecialchars($tagName, ENT_QUOTES) . ' not allowed -->'; |
|---|
| | |
|---|
| | | case XML_HTML_DOCUMENT_NODE: |
|---|
| | | $dump .= $this->dumpHtml($node, $level); |
|---|
| | | break; |
|---|
| | | |
|---|
| | | case XML_DOCUMENT_TYPE_NODE: |
|---|
| | | break; |
|---|
| | | |
|---|
| | | default: |
|---|
| | | $dump .= '<!-- node type ' . $node->nodeType . ' -->'; |
|---|
| | | } |
|---|
| | | } while($node = $node->nextSibling); |
|---|
| | | } |
|---|
| | | while($node = $node->nextSibling); |
|---|
| | | |
|---|
| | | return $dump; |
|---|
| | | } |
|---|
| | |
|---|
| | | // Detect max nesting level (for dumpHTML) (#1489110) |
|---|
| | | $this->max_nesting_level = (int) @ini_get('xdebug.max_nesting_level'); |
|---|
| | | |
|---|
| | | // SVG need to be parsed as XML |
|---|
| | | $xml = stripos($html, '<svg') !== false || stripos($html, '<?xml') !== false; |
|---|
| | | $method = $xml ? 'loadXML' : 'loadHTML'; |
|---|
| | | $options = 0; |
|---|
| | | |
|---|
| | | // Use optimizations if supported |
|---|
| | | if (PHP_VERSION_ID >= 50400) { |
|---|
| | | @$node->loadHTML($html, LIBXML_PARSEHUGE | LIBXML_COMPACT); |
|---|
| | | $options = LIBXML_PARSEHUGE | LIBXML_COMPACT | LIBXML_NONET; |
|---|
| | | } |
|---|
| | | else { |
|---|
| | | @$node->loadHTML($html); |
|---|
| | | } |
|---|
| | | |
|---|
| | | @$node->{$method}($html, $options); |
|---|
| | | |
|---|
| | | return $this->dumpHtml($node); |
|---|
| | | } |
|---|
| | |
|---|
| | | */ |
|---|
| | | private function cleanup($html) |
|---|
| | | { |
|---|
| | | $html = trim($html); |
|---|
| | | |
|---|
| | | // special replacements (not properly handled by washtml class) |
|---|
| | | $html_search = array( |
|---|
| | | // space(s) between <NOBR> |
|---|
| | |
|---|
| | | '', |
|---|
| | | '<html>', |
|---|
| | | ); |
|---|
| | | |
|---|
| | | $html = preg_replace($html_search, $html_replace, trim($html)); |
|---|
| | | |
|---|
| | | //-> Replace all of those weird MS Word quotes and other high characters |
|---|
| | | // Replace all of those weird MS Word quotes and other high characters |
|---|
| | | $badwordchars = array( |
|---|
| | | "\xe2\x80\x98", // left single quote |
|---|
| | | "\xe2\x80\x99", // right single quote |
|---|
| | | "\xe2\x80\x9c", // left double quote |
|---|
| | | "\xe2\x80\x9d", // right double quote |
|---|
| | | "\xe2\x80\x94", // em dash |
|---|
| | | "\xe2\x80\xa6" // elipses |
|---|
| | | "\xe2\x80\xa6" // elipses |
|---|
| | | ); |
|---|
| | | |
|---|
| | | $fixedwordchars = array( |
|---|
| | | "'", |
|---|
| | | "'", |
|---|
| | |
|---|
| | | '—', |
|---|
| | | '...' |
|---|
| | | ); |
|---|
| | | |
|---|
| | | $html = str_replace($badwordchars, $fixedwordchars, $html); |
|---|
| | | |
|---|
| | | // PCRE errors handling (#1486856), should we use something like for every preg_* use? |
|---|
| | |
|---|
| | | $tagname = $matches[2]; |
|---|
| | | $tagname = preg_replace(array( |
|---|
| | | '/:.*$/', // Microsoft's Smart Tags <st1:xxxx> |
|---|
| | | '/[^a-z0-9_\[\]\!-]/i', // forbidden characters |
|---|
| | | '/[^a-z0-9_\[\]\!?-]/i', // forbidden characters |
|---|
| | | ), '', $tagname); |
|---|
| | | |
|---|
| | | // fix invalid closing tags - remove any attributes (#1489446) |
|---|
