$target .= $input['name'];
}
+ if (file_exists($target)) {
+ throw new Exception("bestandsnaam al aanwezig op $target");
+ }
if (!@move_uploaded_file($input['tmp_name'], $target)) {
throw new Exception("bestand kon niet worden opgeslagen in $target");
}
function messagehtml($input)
{
# convert user textarea post to formatted html
+ global $User;
if (empty($input)) {
return;
}
- $html = htmlspecialchars($input);
- $html = nl2br($html);
- return "<p>$html</p>";
+ if ($User and $User->admin and preg_match('/\A<[a-z][^>]*>/', $input)) {
+ return $input; # allow html input as is if privileged
+ }
+ $markup = [
+ '{<((?:\w+:|/).+?)>}' => '<$1>', # unescape link entities
+ '{<(?:https?://)?([^>\s|]+)>}' => '<$1 $1>', # unnamed link
+ '{<([^>\s|]+)[\s|]([^>]+)>}' => '<a href="$1">$2</a>', # hyperlink
+ "/\r\n?/" => "\n", # unix newlines
+ "/ +\n/" => "<br />", # trailing spaces for hard line break
+ "/^[-*] (.*)$\n?/m" => '<li>$1</li>', # list item
+ "/^(.+)$\n?/m" => "<p>$1</p>\n", # paragraph
+ "{^<p>(<li>.*</li>)(?:</p>\n)?}m" => "<ul>$1</ul>\n", # list container
+ '/_(?<!\w_)(.+?)_(?!\w)/' => '<em>$1</em>', # italic
+ '/\*(?<!\w\*)(.+?)\*(?!\w)/' => '<strong>$1</strong>', # bold
+ '/~(?<!\w~)(.+?)~(?!\w)/' => '<s>$1</s>', # stricken
+ '/`(?<!\w`)(.+?)`(?!\w)/' => '<code>$1</code>', # monospace
+ ];
+ return preg_replace(array_keys($markup), array_values($markup), htmlspecialchars($input));
}