| | |
| | | header("Pragma: no-cache"); |
| | | |
| | | // We need to set the following headers to make downloads work using IE in HTTPS mode. |
| | | if (isset($_SERVER['HTTPS'])) { |
| | | if (rcube_https_check()) { |
| | | header('Pragma: '); |
| | | header('Cache-Control: '); |
| | | } |
| | |
| | | return $mime_type; |
| | | } |
| | | |
| | | |
| | | /** |
| | | * A method to guess encoding of a string. |
| | | * |
| | |
| | | return $result ? $result : $failover; |
| | | } |
| | | |
| | | /** |
| | | * Removes non-unicode characters from input |
| | | * |
| | | * @param mixed $input String or array. |
| | | * @return string |
| | | */ |
| | | function rc_utf8_clean($input) |
| | | { |
| | | // handle input of type array |
| | | if (is_array($input)) { |
| | | foreach ($input as $idx => $val) |
| | | $input[$idx] = rc_utf8_clean($val); |
| | | return $input; |
| | | } |
| | | |
| | | if (!is_string($input) || $input == '') |
| | | return $input; |
| | | |
| | | // iconv/mbstring are much faster (especially with long strings) |
| | | if (function_exists('mb_convert_encoding') && ($res = mb_convert_encoding($input, 'UTF8', 'UTF8'))) |
| | | return $res; |
| | | |
| | | if (function_exists('iconv') && ($res = iconv('UTF8', 'UTF8//IGNORE', $input))) |
| | | return $res; |
| | | |
| | | $regexp = '/^('. |
| | | // '[\x00-\x7F]'. // UTF8-1 |
| | | '|[\xC2-\xDF][\x80-\xBF]'. // UTF8-2 |
| | | '|\xE0[\xA0-\xBF][\x80-\xBF]'. // UTF8-3 |
| | | '|[\xE1-\xEC][\x80-\xBF][\x80-\xBF]'. // UTF8-3 |
| | | '|\xED[\x80-\x9F][\x80-\xBF]'. // UTF8-3 |
| | | '|[\xEE-\xEF][\x80-\xBF][\x80-\xBF]'. // UTF8-3 |
| | | '|\xF0[\x90-\xBF][\x80-\xBF][\x80-\xBF]'. // UTF8-4 |
| | | '|[\xF1-\xF3][\x80-\xBF][\x80-\xBF][\x80-\xBF]'.// UTF8-4 |
| | | '|\xF4[\x80-\x8F][\x80-\xBF][\x80-\xBF]'. // UTF8-4 |
| | | ')$/'; |
| | | |
| | | $seq = ''; |
| | | $out = ''; |
| | | |
| | | for ($i = 0, $len = strlen($input)-1; $i < $len; $i++) { |
| | | $chr = $input[$i]; |
| | | $ord = ord($chr); |
| | | // 1-byte character |
| | | if ($ord <= 0x7F) { |
| | | if ($seq) |
| | | $out .= preg_match($regexp, $seq) ? $seq : ''; |
| | | $seq = ''; |
| | | $out .= $chr; |
| | | // first (or second) byte of multibyte sequence |
| | | } else if ($ord >= 0xC0) { |
| | | if (strlen($seq)>1) { |
| | | $out .= preg_match($regexp, $seq) ? $seq : ''; |
| | | $seq = ''; |
| | | } else if ($seq && ord($seq) < 0xC0) { |
| | | $seq = ''; |
| | | } |
| | | $seq .= $chr; |
| | | // next byte of multibyte sequence |
| | | } else if ($seq) { |
| | | $seq .= $chr; |
| | | } |
| | | } |
| | | |
| | | if ($seq) |
| | | $out .= preg_match($regexp, $seq) ? $seq : ''; |
| | | |
| | | return $out; |
| | | } |
| | | |
| | | /** |
| | | * Explode quoted string |