| | |
| | | | Author: Thomas Bruederli <roundcube@gmail.com> | |
| | | | Author: Aleksander Machniak <alec@alec.pl> | |
| | | +-----------------------------------------------------------------------+ |
| | | |
| | | $Id$ |
| | | |
| | | */ |
| | | |
| | | |
| | |
| | | */ |
| | | class rcube_mime |
| | | { |
| | | private static $default_charset = RCMAIL_CHARSET; |
| | | private static $default_charset; |
| | | |
| | | |
| | | /** |
| | |
| | | */ |
| | | function __construct($default_charset = null) |
| | | { |
| | | if ($default_charset) { |
| | | self::$default_charset = $default_charset; |
| | | self::$default_charset = $default_charset; |
| | | } |
| | | |
| | | |
| | | /** |
| | | * Returns message/object character set name |
| | | * |
| | | * @return string Characted set name |
| | | */ |
| | | public static function get_charset() |
| | | { |
| | | if (self::$default_charset) { |
| | | return self::$default_charset; |
| | | } |
| | | else { |
| | | self::$default_charset = rcmail::get_instance()->config->get('default_charset', RCMAIL_CHARSET); |
| | | |
| | | if ($charset = rcube::get_instance()->config->get('default_charset')) { |
| | | return $charset; |
| | | } |
| | | |
| | | return RCMAIL_CHARSET; |
| | | } |
| | | |
| | | |
| | |
| | | if ($part->ctype_parameters['charset']) |
| | | $struct->charset = $part->ctype_parameters['charset']; |
| | | |
| | | $part_charset = $struct->charset ? $struct->charset : self::$default_charset; |
| | | $part_charset = $struct->charset ? $struct->charset : self::get_charset(); |
| | | |
| | | // TODO: determine filename |
| | | // determine filename |
| | | if (($filename = $part->d_parameters['filename']) || ($filename = $part->ctype_parameters['name'])) { |
| | | $struct->filename = rcube_mime::decode_mime_string($filename, $part_charset); |
| | | } |
| | | |
| | | // copy part body and convert it to UTF-8 if necessary |
| | | $struct->body = $part->ctype_primary == 'text' ? rcube_charset::convert($part->body, $part_charset) : $part->body; |
| | | $struct->body = $part->ctype_primary == 'text' || !$part->ctype_parameters['charset'] ? rcube_charset::convert($part->body, $part_charset) : $part->body; |
| | | $struct->size = strlen($part->body); |
| | | $struct->disposition = $part->disposition; |
| | | |
| | |
| | | */ |
| | | public static function decode_mime_string($input, $fallback = null) |
| | | { |
| | | $default_charset = !empty($fallback) ? $fallback : self::$default_charset; |
| | | $default_charset = !empty($fallback) ? $fallback : self::get_charset(); |
| | | |
| | | // rfc: all line breaks or other characters not found |
| | | // in the Base64 Alphabet must be ignored by decoding software |
| | |
| | | // Append everything that is before the text to be decoded |
| | | if ($start != $pos) { |
| | | $substr = substr($input, $start, $pos-$start); |
| | | $out .= rcube_charset_convert($substr, $default_charset); |
| | | $out .= rcube_charset::convert($substr, $default_charset); |
| | | $start = $pos; |
| | | } |
| | | $start += $length; |
| | |
| | | $text = quoted_printable_decode($text); |
| | | } |
| | | |
| | | $out .= rcube_charset_convert($text, $charset); |
| | | $out .= rcube_charset::convert($text, $charset); |
| | | $tmp = array(); |
| | | } |
| | | |
| | | // add the last part of the input string |
| | | if ($start != strlen($input)) { |
| | | $out .= rcube_charset_convert(substr($input, $start), $default_charset); |
| | | $out .= rcube_charset::convert(substr($input, $start), $default_charset); |
| | | } |
| | | |
| | | // return the results |
| | |
| | | } |
| | | |
| | | // no encoding information, use fallback |
| | | return rcube_charset_convert($input, $default_charset); |
| | | return rcube_charset::convert($input, $default_charset); |
| | | } |
| | | |
| | | |
| | |
| | | $prefix = $regs[0]; |
| | | $level = strlen($prefix); |
| | | $line = rtrim(substr($line, $level)); |
| | | $line = $prefix . rc_wordwrap($line, $length - $level - 2, " \r\n$prefix "); |
| | | $line = $prefix . self::wordwrap($line, $length - $level - 2, " \r\n$prefix "); |
| | | } |
| | | else if ($line) { |
| | | $line = rc_wordwrap(rtrim($line), $length - 2, " \r\n"); |
| | | $line = self::wordwrap(rtrim($line), $length - 2, " \r\n"); |
| | | // space-stuffing |
| | | $line = preg_replace('/(^|\r\n)(From| |>)/', '\\1 \\2', $line); |
| | | } |
| | |
| | | return implode("\r\n", $text); |
| | | } |
| | | |
| | | |
| | | /** |
| | | * Improved wordwrap function. |
| | | * |
| | | * @param string $string Text to wrap |
| | | * @param int $width Line width |
| | | * @param string $break Line separator |
| | | * @param bool $cut Enable to cut word |
| | | * |
| | | * @return string Text |
| | | */ |
| | | public static function wordwrap($string, $width=75, $break="\n", $cut=false) |
| | | { |
| | | $para = explode($break, $string); |
| | | $string = ''; |
| | | |
| | | while (count($para)) { |
| | | $line = array_shift($para); |
| | | if ($line[0] == '>') { |
| | | $string .= $line.$break; |
| | | continue; |
| | | } |
| | | |
| | | $list = explode(' ', $line); |
| | | $len = 0; |
| | | while (count($list)) { |
| | | $line = array_shift($list); |
| | | $l = mb_strlen($line); |
| | | $newlen = $len + $l + ($len ? 1 : 0); |
| | | |
| | | if ($newlen <= $width) { |
| | | $string .= ($len ? ' ' : '').$line; |
| | | $len += (1 + $l); |
| | | } |
| | | else { |
| | | if ($l > $width) { |
| | | if ($cut) { |
| | | $start = 0; |
| | | while ($l) { |
| | | $str = mb_substr($line, $start, $width); |
| | | $strlen = mb_strlen($str); |
| | | $string .= ($len ? $break : '').$str; |
| | | $start += $strlen; |
| | | $l -= $strlen; |
| | | $len = $strlen; |
| | | } |
| | | } |
| | | else { |
| | | $string .= ($len ? $break : '').$line; |
| | | if (count($list)) { |
| | | $string .= $break; |
| | | } |
| | | $len = 0; |
| | | } |
| | | } |
| | | else { |
| | | $string .= $break.$line; |
| | | $len = $l; |
| | | } |
| | | } |
| | | } |
| | | |
| | | if (count($para)) { |
| | | $string .= $break; |
| | | } |
| | | } |
| | | |
| | | return $string; |
| | | } |
| | | |
| | | |
| | | /** |
| | | * A method to guess the mime_type of an attachment. |
| | | * |
| | | * @param string $path Path to the file. |
| | | * @param string $name File name (with suffix) |
| | | * @param string $failover Mime type supplied for failover. |
| | | * @param string $is_stream Set to True if $path contains file body |
| | | * |
| | | * @return string |
| | | * @author Till Klampaeckel <till@php.net> |
| | | * @see http://de2.php.net/manual/en/ref.fileinfo.php |
| | | * @see http://de2.php.net/mime_content_type |
| | | */ |
| | | public static function file_content_type($path, $name, $failover = 'application/octet-stream', $is_stream = false) |
| | | { |
| | | $mime_type = null; |
| | | $mime_magic = rcube::get_instance()->config->get('mime_magic'); |
| | | $mime_ext = @include RCMAIL_CONFIG_DIR . '/mimetypes.php'; |
| | | |
| | | // use file name suffix with hard-coded mime-type map |
| | | if (is_array($mime_ext) && $name) { |
| | | if ($suffix = substr($name, strrpos($name, '.')+1)) { |
| | | $mime_type = $mime_ext[strtolower($suffix)]; |
| | | } |
| | | } |
| | | |
| | | // try fileinfo extension if available |
| | | if (!$mime_type && function_exists('finfo_open')) { |
| | | if ($finfo = finfo_open(FILEINFO_MIME, $mime_magic)) { |
| | | if ($is_stream) |
| | | $mime_type = finfo_buffer($finfo, $path); |
| | | else |
| | | $mime_type = finfo_file($finfo, $path); |
| | | finfo_close($finfo); |
| | | } |
| | | } |
| | | |
| | | // try PHP's mime_content_type |
| | | if (!$mime_type && !$is_stream && function_exists('mime_content_type')) { |
| | | $mime_type = @mime_content_type($path); |
| | | } |
| | | |
| | | // fall back to user-submitted string |
| | | if (!$mime_type) { |
| | | $mime_type = $failover; |
| | | } |
| | | else { |
| | | // Sometimes (PHP-5.3?) content-type contains charset definition, |
| | | // Remove it (#1487122) also "charset=binary" is useless |
| | | $mime_type = array_shift(preg_split('/[; ]/', $mime_type)); |
| | | } |
| | | |
| | | return $mime_type; |
| | | } |
| | | |
| | | |
| | | /** |
| | | * Detect image type of the given binary data by checking magic numbers. |
| | | * |
| | | * @param string $data Binary file content |
| | | * |
| | | * @return string Detected mime-type or jpeg as fallback |
| | | */ |
| | | public static function image_content_type($data) |
| | | { |
| | | $type = 'jpeg'; |
| | | if (preg_match('/^\x89\x50\x4E\x47/', $data)) $type = 'png'; |
| | | else if (preg_match('/^\x47\x49\x46\x38/', $data)) $type = 'gif'; |
| | | else if (preg_match('/^\x00\x00\x01\x00/', $data)) $type = 'ico'; |
| | | // else if (preg_match('/^\xFF\xD8\xFF\xE0/', $data)) $type = 'jpeg'; |
| | | |
| | | return 'image/' . $type; |
| | | } |
| | | |
| | | } |