X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=program%2Flib%2Fwashtml.php;h=f8c3251ad93eb9377ceb117b02061f2e3ec0f19e;hb=76507f7c63a660742e76889ad6e3919f3dde3bb0;hp=0f8dc7ee614863ec35cf0fd5f638d8b19510c973;hpb=315a64971ff1249e4d5884f309fab5ddbfe55cc6;p=roundcube.git

diff --git a/program/lib/washtml.php b/program/lib/washtml.php
index 0f8dc7e..f8c3251 100644
--- a/program/lib/washtml.php
+++ b/program/lib/washtml.php
@@ -81,17 +81,35 @@
 class washtml
 {
   /* Allowed HTML elements (default) */
-  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');
-  
+  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',
+    // form elements
+    'button', 'input', 'textarea', 'select', 'option', 'optgroup'
+  );
+
   /* Ignore these HTML tags and their content */
   static $ignore_elements = array('script', 'applet', 'embed', 'object', 'style');
-  
+
   /* Allowed HTML attributes */
-  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');  
+  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',
+    // attributes of form elements
+    'type', 'rows', 'cols', 'disabled', 'readonly', 'checked', 'multiple', 'value'
+  );
 
   /* Block elements which could be empty but cannot be returned in short form (<tag />) */
-  static $block_elements = array('div', 'p', 'pre', 'blockquote', 'a', 'font', 'center', 'table', 'ul', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'ol', 'dl', 'strong', 'i', 'b');
-  
+  static $block_elements = array('div', 'p', 'pre', 'blockquote', 'a', 'font', 'center',
+    'table', 'ul', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'ol', 'dl', 'strong', 'i', 'b', 'u');
+
   /* State for linked objects in HTML */
   public $extlinks = false;
 
@@ -100,7 +118,7 @@ class washtml
 
   /* Registered callback functions for tags */
   private $handlers = array();
-  
+
   /* Allowed HTML elements */
   private $_html_elements = array();
 
@@ -112,7 +130,7 @@ class washtml
 
   /* Allowed HTML attributes */
   private $_html_attribs = array();
-  
+
 
   /* Constructor */
   public function __construct($p = array()) {
@@ -123,13 +141,13 @@ class washtml
     unset($p['html_elements'], $p['html_attribs'], $p['ignore_elements'], $p['block_elements']);
     $this->config = $p + array('show_washed'=>true, 'allow_remote'=>false, 'cid_map'=>array());
   }
-  
+
   /* Register a callback function for a certain tag */
   public function add_callback($tagName, $callback)
   {
     $this->handlers[$tagName] = $callback;
   }
-  
+
   /* Check CSS style */
   private function wash_style($style) {
     $s = '';
@@ -143,14 +161,14 @@ class washtml
           preg_match('/^(url\(\s*[\'"]?([^\'"\)]*)[\'"]?\s*\)'./*1,2*/
                  '|rgb\(\s*[0-9]+\s*,\s*[0-9]+\s*,\s*[0-9]+\s*\)'.
                  '|-?[0-9.]+\s*(em|ex|px|cm|mm|in|pt|pc|deg|rad|grad|ms|s|hz|khz|%)?'.
-                 '|#[0-9a-f]{3,6}|[a-z0-9\-]+'.
+                 '|#[0-9a-f]{3,6}|[a-z0-9", -]+'.
                  ')\s*/i', $str, $match)) {
           if ($match[2]) {
             if (($src = $this->config['cid_map'][$match[2]])
                 || ($src = $this->config['cid_map'][$this->config['base_url'].$match[2]])) {
               $value .= ' url('.htmlspecialchars($src, ENT_QUOTES) . ')';
             }
-            else if (preg_match('/^(http|https|ftp):.*$/i', $match[2], $url)) {
+            else if (preg_match('!^(https?:)?//[a-z0-9/._+-]+$!i', $match[2], $url)) {
               if ($this->config['allow_remote'])
                 $value .= ' url('.htmlspecialchars($url[0], ENT_QUOTES).')';
               else
@@ -160,8 +178,9 @@ class washtml
               $value .= ' url('.htmlspecialchars($match[2], ENT_QUOTES).')';
             }
           }
-          else if ($match[0] != 'url' && $match[0] != 'rbg') //whitelist ?
+          else if ($match[0] != 'url' && $match[0] != 'rgb') //whitelist ?
             $value .= ' ' . $match[0];
+
           $str = substr($str, strlen($match[0]));
         }
         if ($value)
@@ -182,8 +201,10 @@ class washtml
       if (isset($this->_html_attribs[$key]) ||
          ($key == 'href' && preg_match('/^(http:|https:|ftp:|mailto:|#).+/i', $value)))
         $t .= ' ' . $key . '="' . htmlspecialchars($value, ENT_QUOTES) . '"';
-      else if ($key == 'style' && ($style = $this->wash_style($value)))
-        $t .= ' style="' . $style . '"';
+      else if ($key == 'style' && ($style = $this->wash_style($value))) {
+        $quot = strpos($style, '"') !== false ? "'" : '"';
+        $t .= ' style=' . $quot . $style . $quot;
+      }
       else if ($key == 'background' || ($key == 'src' && strtolower($node->tagName) == 'img')) { //check tagName anyway
         if (($src = $this->config['cid_map'][$value])
             || ($src = $this->config['cid_map'][$this->config['base_url'].$value])) {
@@ -222,7 +243,7 @@ class washtml
       case XML_ELEMENT_NODE: //Check element
         $tagName = strtolower($node->tagName);
         if ($callback = $this->handlers[$tagName]) {
-          $dump .= call_user_func($callback, $tagName, $this->wash_attribs($node), $this->dumpHtml($node));
+          $dump .= call_user_func($callback, $tagName, $this->wash_attribs($node), $this->dumpHtml($node), $this);
         }
         else if (isset($this->_html_elements[$tagName])) {
           $content = $this->dumpHtml($node);
@@ -273,12 +294,21 @@ class washtml
       $this->config['base_url'] = '';
 
     // Remove invalid HTML comments (#1487759)
-    $html = preg_replace('/<!--[^->]*>/', '', $html);
+    // Don't remove valid conditional comments
+    $html = preg_replace('/<!--[^->[\n]*>/', '', $html);
 
     @$node->loadHTML($html);
     return $this->dumpHtml($node);
   }
 
+  /**
+   * Getter for config parameters
+   */
+  public function get_config($prop)
+  {
+      return $this->config[$prop];
+  }
+
 }
 
 ?>