diff options
| author | Michael Foster <savetheinternet@tinyboard.org> | 2013-07-30 16:41:10 -0400 |
|---|---|---|
| committer | Michael Foster <savetheinternet@tinyboard.org> | 2013-07-30 16:41:10 -0400 |
| commit | 461084d400620c32ef262aab1f837573f47b0951 (patch) | |
| tree | c055ed2274cd1492cd952f4bb84886b6a357d2f6 /inc | |
| parent | 54714595f7ce2cdbd88de1c536e0ddc97ca71529 (diff) | |
MySQL's utf8 charset only supports up to 3-byte symbols. Insterting four byte symbols (U+010000 to U+10FFFF) can be done maliciously to break HTML mark-up.
The ideal solution was to convert to MySQL's utf8mb4 charset, but then we would lose support for MySQL < 5.5.3. In this fix, incompatible characters are encoded as HTML numeric character references (eg. #65536) and just stripped from body_nommarkup.
Diffstat (limited to 'inc')
| -rw-r--r-- | inc/functions.php | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/inc/functions.php b/inc/functions.php index 2915e1b6..4af7891a 100644 --- a/inc/functions.php +++ b/inc/functions.php @@ -1523,7 +1523,7 @@ function markup(&$body, $track_cites = false) { } function utf8tohtml($utf8) { - return htmlspecialchars($utf8, ENT_NOQUOTES, 'UTF-8'); + return mb_encode_numericentity(htmlspecialchars($utf8, ENT_NOQUOTES, 'UTF-8'), array(0x010000, 0xffffff, 0, 0xffffff), 'UTF-8'); } function ordutf8($string, &$offset) { |