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remove 4-byte unicode when cleaning subjects

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This commit is contained in:
Ralf Becker 2018-04-11 11:22:11 +02:00
parent d647c197a7
commit c795f13f81
1 changed files with 9 additions and 3 deletions
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12
api/src/Mail.php
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@ -6438,13 +6438,19 @@ class Mail
* Under Windows the characters < > ? " : | \ / * are not allowed. * Under Windows the characters < > ? " : | \ / * are not allowed.
* % causes problems with VFS UI * % causes problems with VFS UI
* *
* 4-byte unicode is also unwanted, as our current MySQL collation can store it
*
* We also dont want empty filenames, using lang('empty') instead.
*
* @param string $filename * @param string $filename
* @return Cleaned filename, with problematic characters replaced with '_'. * @return Cleaned filename, with problematic characters replaced with ' '.
*/ */
static function clean_subject_for_filename($filename) static function clean_subject_for_filename($filename)
{ {
static $filter_pattern = '$[\f\n\t\x0b\:*#?<>%"\|/\\\?]$'; static $filter_pattern = '$[\f\n\t\x0b\:*#?<>%"\|/\x{10000}-\x{10FFFF}]$u';
return preg_replace($filter_pattern, "_", trim($filename)); $file = trim(preg_replace($filter_pattern, ' ', $filename));
if (empty($file)) $file = lang('empty');
return $file;
} }
/** /**