diff options
Diffstat (limited to 'program/steps/mail/func.inc')
| -rw-r--r-- | program/steps/mail/func.inc | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/program/steps/mail/func.inc b/program/steps/mail/func.inc index 7de78a1ef..6a885a07c 100644 --- a/program/steps/mail/func.inc +++ b/program/steps/mail/func.inc @@ -602,15 +602,14 @@ function rcmail_print_body($part, $p = array()) $wash_opts['html_elements'] = array('html','head','title','body'); } - /* CSS styles need to be sanitized! + // allow CSS styles, will be sanitized by rcmail_washtml_callback() if ($p['safe']) { $wash_opts['html_elements'][] = 'style'; - $wash_opts['html_attribs'] = array('type'); } - */ $washer = new washtml($wash_opts); $washer->add_callback('form', 'rcmail_washtml_callback'); + $washer->add_callback('style', 'rcmail_washtml_callback'); $body = $washer->wash($html); $REMOTE_OBJECTS = $washer->extlinks; @@ -698,6 +697,16 @@ function rcmail_washtml_callback($tagname, $attrib, $content) $out = html::div('form', $content); break; + case 'style': + // decode all escaped entities and reduce to ascii strings + $stripped = preg_replace('/[^a-zA-Z\(:]/', '', rcmail_xss_entitiy_decode($source)); + + // now check for evli strings like expression, behavior or url() + if (!preg_match('/expression|behavior|url\(|import/', $css)) { + $out = html::tag('style', array('type' => 'text/css'), $content); + break; + } + default: $out = ''; } |