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MDL-33007 add workaround for broken iconv //IGNORE

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This patch adds mbstring utf-8 cleanup fallback and admin warning if no utf-8 cleanup possible in user submitted data.
This commit is contained in:
Petr Skoda 2012-05-15 23:07:10 +02:00
parent 3681e78429
commit 0aff15c2c9
6 changed files with 48 additions and 15 deletions
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28
lib/moodlelib.php
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@ -1127,15 +1127,39 @@ function fix_utf8($value) {
// shortcut
return $value;
}
// lower error reporting because glibc throws bogus notices
// Lower error reporting because glibc throws bogus notices.
$olderror = error_reporting();
if ($olderror & E_NOTICE) {
error_reporting($olderror ^ E_NOTICE);
}
$result = iconv('UTF-8', 'UTF-8//IGNORE', $value);
// Note: this duplicates min_fix_utf8() intentionally.
static $buggyiconv = null;
if ($buggyiconv === null) {
$buggyiconv = (!function_exists('iconv') or iconv('UTF-8', 'UTF-8//IGNORE', '100'.chr(130).'€') !== '100€');
}
if ($buggyiconv) {
if (function_exists('mb_convert_encoding')) {
$subst = mb_substitute_character();
mb_substitute_character('');
$result = mb_convert_encoding($value, 'utf-8', 'utf-8');
mb_substitute_character($subst);
} else {
// Warn admins on admin/index.php page.
$result = $value;
}
} else {
$result = iconv('UTF-8', 'UTF-8//IGNORE', $value);
}
if ($olderror & E_NOTICE) {
error_reporting($olderror);
}
return $result;
} else if (is_array($value)) {