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-rw-r--r--program/include/rcube_mime.php713
1 files changed, 0 insertions, 713 deletions
diff --git a/program/include/rcube_mime.php b/program/include/rcube_mime.php
deleted file mode 100644
index 7ce7c90fe..000000000
--- a/program/include/rcube_mime.php
+++ /dev/null
@@ -1,713 +0,0 @@
-<?php
-
-/*
- +-----------------------------------------------------------------------+
- | program/include/rcube_mime.php |
- | |
- | This file is part of the Roundcube Webmail client |
- | Copyright (C) 2005-2012, The Roundcube Dev Team |
- | Copyright (C) 2011-2012, Kolab Systems AG |
- | |
- | Licensed under the GNU General Public License version 3 or |
- | any later version with exceptions for skins & plugins. |
- | See the README file for a full license statement. |
- | |
- | PURPOSE: |
- | MIME message parsing utilities |
- | |
- +-----------------------------------------------------------------------+
- | Author: Thomas Bruederli <roundcube@gmail.com> |
- | Author: Aleksander Machniak <alec@alec.pl> |
- +-----------------------------------------------------------------------+
-*/
-
-
-/**
- * Class for parsing MIME messages
- *
- * @package Framework
- * @subpackage Storage
- * @author Thomas Bruederli <roundcube@gmail.com>
- * @author Aleksander Machniak <alec@alec.pl>
- */
-class rcube_mime
-{
- private static $default_charset;
-
-
- /**
- * Object constructor.
- */
- function __construct($default_charset = null)
- {
- 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::$default_charset;
- }
-
- if ($charset = rcube::get_instance()->config->get('default_charset')) {
- return $charset;
- }
-
- return RCMAIL_CHARSET;
- }
-
-
- /**
- * Parse the given raw message source and return a structure
- * of rcube_message_part objects.
- *
- * It makes use of the PEAR:Mail_mimeDecode library
- *
- * @param string The message source
- * @return object rcube_message_part The message structure
- */
- public static function parse_message($raw_body)
- {
- $mime = new Mail_mimeDecode($raw_body);
- $struct = $mime->decode(array('include_bodies' => true, 'decode_bodies' => true));
- return self::structure_part($struct);
- }
-
-
- /**
- * Recursive method to convert a Mail_mimeDecode part into a rcube_message_part object
- *
- * @param object A message part struct
- * @param int Part count
- * @param string Parent MIME ID
- *
- * @return object rcube_message_part
- */
- private static function structure_part($part, $count=0, $parent='')
- {
- $struct = new rcube_message_part;
- $struct->mime_id = $part->mime_id ? $part->mime_id : (empty($parent) ? (string)$count : "$parent.$count");
- $struct->headers = $part->headers;
- $struct->ctype_primary = $part->ctype_primary;
- $struct->ctype_secondary = $part->ctype_secondary;
- $struct->mimetype = $part->ctype_primary . '/' . $part->ctype_secondary;
- $struct->ctype_parameters = $part->ctype_parameters;
-
- if ($part->headers['content-transfer-encoding'])
- $struct->encoding = $part->headers['content-transfer-encoding'];
- if ($part->ctype_parameters['charset'])
- $struct->charset = $part->ctype_parameters['charset'];
-
- $part_charset = $struct->charset ? $struct->charset : self::get_charset();
-
- // determine filename
- if (($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 = $part->ctype_primary == 'text' || !$part->ctype_parameters['charset'] ? rcube_charset::convert($part->body, $part_charset) : $part->body;
- $struct->size = strlen($part->body);
- $struct->disposition = $part->disposition;
-
- foreach ((array)$part->parts as $child_part) {
- $struct->parts[] = self::structure_part($child_part, ++$count, $struct->mime_id);
- }
-
- return $struct;
- }
-
-
- /**
- * Split an address list into a structured array list
- *
- * @param string $input Input string
- * @param int $max List only this number of addresses
- * @param boolean $decode Decode address strings
- * @param string $fallback Fallback charset if none specified
- *
- * @return array Indexed list of addresses
- */
- static function decode_address_list($input, $max = null, $decode = true, $fallback = null)
- {
- $a = self::parse_address_list($input, $decode, $fallback);
- $out = array();
- $j = 0;
-
- // Special chars as defined by RFC 822 need to in quoted string (or escaped).
- $special_chars = '[\(\)\<\>\\\.\[\]@,;:"]';
-
- if (!is_array($a))
- return $out;
-
- foreach ($a as $val) {
- $j++;
- $address = trim($val['address']);
- $name = trim($val['name']);
-
- if ($name && $address && $name != $address)
- $string = sprintf('%s <%s>', preg_match("/$special_chars/", $name) ? '"'.addcslashes($name, '"').'"' : $name, $address);
- else if ($address)
- $string = $address;
- else if ($name)
- $string = $name;
-
- $out[$j] = array(
- 'name' => $name,
- 'mailto' => $address,
- 'string' => $string
- );
-
- if ($max && $j==$max)
- break;
- }
-
- return $out;
- }
-
-
- /**
- * Decode a message header value
- *
- * @param string $input Header value
- * @param string $fallback Fallback charset if none specified
- *
- * @return string Decoded string
- */
- public static function decode_header($input, $fallback = null)
- {
- $str = self::decode_mime_string((string)$input, $fallback);
-
- return $str;
- }
-
-
- /**
- * Decode a mime-encoded string to internal charset
- *
- * @param string $input Header value
- * @param string $fallback Fallback charset if none specified
- *
- * @return string Decoded string
- */
- public static function decode_mime_string($input, $fallback = null)
- {
- $default_charset = !empty($fallback) ? $fallback : self::get_charset();
-
- // rfc: all line breaks or other characters not found
- // in the Base64 Alphabet must be ignored by decoding software
- // delete all blanks between MIME-lines, differently we can
- // receive unnecessary blanks and broken utf-8 symbols
- $input = preg_replace("/\?=\s+=\?/", '?==?', $input);
-
- // encoded-word regexp
- $re = '/=\?([^?]+)\?([BbQq])\?([^\n]*?)\?=/';
-
- // Find all RFC2047's encoded words
- if (preg_match_all($re, $input, $matches, PREG_OFFSET_CAPTURE | PREG_SET_ORDER)) {
- // Initialize variables
- $tmp = array();
- $out = '';
- $start = 0;
-
- foreach ($matches as $idx => $m) {
- $pos = $m[0][1];
- $charset = $m[1][0];
- $encoding = $m[2][0];
- $text = $m[3][0];
- $length = strlen($m[0][0]);
-
- // 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);
- $start = $pos;
- }
- $start += $length;
-
- // Per RFC2047, each string part "MUST represent an integral number
- // of characters . A multi-octet character may not be split across
- // adjacent encoded-words." However, some mailers break this, so we
- // try to handle characters spanned across parts anyway by iterating
- // through and aggregating sequential encoded parts with the same
- // character set and encoding, then perform the decoding on the
- // aggregation as a whole.
-
- $tmp[] = $text;
- if ($next_match = $matches[$idx+1]) {
- if ($next_match[0][1] == $start
- && $next_match[1][0] == $charset
- && $next_match[2][0] == $encoding
- ) {
- continue;
- }
- }
-
- $count = count($tmp);
- $text = '';
-
- // Decode and join encoded-word's chunks
- if ($encoding == 'B' || $encoding == 'b') {
- // base64 must be decoded a segment at a time
- for ($i=0; $i<$count; $i++)
- $text .= base64_decode($tmp[$i]);
- }
- else { //if ($encoding == 'Q' || $encoding == 'q') {
- // quoted printable can be combined and processed at once
- for ($i=0; $i<$count; $i++)
- $text .= $tmp[$i];
-
- $text = str_replace('_', ' ', $text);
- $text = quoted_printable_decode($text);
- }
-
- $out .= rcube_charset::convert($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);
- }
-
- // return the results
- return $out;
- }
-
- // no encoding information, use fallback
- return rcube_charset::convert($input, $default_charset);
- }
-
-
- /**
- * Decode a mime part
- *
- * @param string $input Input string
- * @param string $encoding Part encoding
- * @return string Decoded string
- */
- public static function decode($input, $encoding = '7bit')
- {
- switch (strtolower($encoding)) {
- case 'quoted-printable':
- return quoted_printable_decode($input);
- case 'base64':
- return base64_decode($input);
- case 'x-uuencode':
- case 'x-uue':
- case 'uue':
- case 'uuencode':
- return convert_uudecode($input);
- case '7bit':
- default:
- return $input;
- }
- }
-
-
- /**
- * Split RFC822 header string into an associative array
- * @access private
- */
- public static function parse_headers($headers)
- {
- $a_headers = array();
- $headers = preg_replace('/\r?\n(\t| )+/', ' ', $headers);
- $lines = explode("\n", $headers);
- $c = count($lines);
-
- for ($i=0; $i<$c; $i++) {
- if ($p = strpos($lines[$i], ': ')) {
- $field = strtolower(substr($lines[$i], 0, $p));
- $value = trim(substr($lines[$i], $p+1));
- if (!empty($value))
- $a_headers[$field] = $value;
- }
- }
-
- return $a_headers;
- }
-
-
- /**
- * @access private
- */
- private static function parse_address_list($str, $decode = true, $fallback = null)
- {
- // remove any newlines and carriage returns before
- $str = preg_replace('/\r?\n(\s|\t)?/', ' ', $str);
-
- // extract list items, remove comments
- $str = self::explode_header_string(',;', $str, true);
- $result = array();
-
- // simplified regexp, supporting quoted local part
- $email_rx = '(\S+|("\s*(?:[^"\f\n\r\t\v\b\s]+\s*)+"))@\S+';
-
- foreach ($str as $key => $val) {
- $name = '';
- $address = '';
- $val = trim($val);
-
- if (preg_match('/(.*)<('.$email_rx.')>$/', $val, $m)) {
- $address = $m[2];
- $name = trim($m[1]);
- }
- else if (preg_match('/^('.$email_rx.')$/', $val, $m)) {
- $address = $m[1];
- $name = '';
- }
- else {
- $name = $val;
- }
-
- // dequote and/or decode name
- if ($name) {
- if ($name[0] == '"' && $name[strlen($name)-1] == '"') {
- $name = substr($name, 1, -1);
- $name = stripslashes($name);
- }
- if ($decode) {
- $name = self::decode_header($name, $fallback);
- }
- }
-
- if (!$address && $name) {
- $address = $name;
- }
-
- if ($address) {
- $result[$key] = array('name' => $name, 'address' => $address);
- }
- }
-
- return $result;
- }
-
-
- /**
- * Explodes header (e.g. address-list) string into array of strings
- * using specified separator characters with proper handling
- * of quoted-strings and comments (RFC2822)
- *
- * @param string $separator String containing separator characters
- * @param string $str Header string
- * @param bool $remove_comments Enable to remove comments
- *
- * @return array Header items
- */
- public static function explode_header_string($separator, $str, $remove_comments = false)
- {
- $length = strlen($str);
- $result = array();
- $quoted = false;
- $comment = 0;
- $out = '';
-
- for ($i=0; $i<$length; $i++) {
- // we're inside a quoted string
- if ($quoted) {
- if ($str[$i] == '"') {
- $quoted = false;
- }
- else if ($str[$i] == "\\") {
- if ($comment <= 0) {
- $out .= "\\";
- }
- $i++;
- }
- }
- // we are inside a comment string
- else if ($comment > 0) {
- if ($str[$i] == ')') {
- $comment--;
- }
- else if ($str[$i] == '(') {
- $comment++;
- }
- else if ($str[$i] == "\\") {
- $i++;
- }
- continue;
- }
- // separator, add to result array
- else if (strpos($separator, $str[$i]) !== false) {
- if ($out) {
- $result[] = $out;
- }
- $out = '';
- continue;
- }
- // start of quoted string
- else if ($str[$i] == '"') {
- $quoted = true;
- }
- // start of comment
- else if ($remove_comments && $str[$i] == '(') {
- $comment++;
- }
-
- if ($comment <= 0) {
- $out .= $str[$i];
- }
- }
-
- if ($out && $comment <= 0) {
- $result[] = $out;
- }
-
- return $result;
- }
-
-
- /**
- * Interpret a format=flowed message body according to RFC 2646
- *
- * @param string $text Raw body formatted as flowed text
- *
- * @return string Interpreted text with unwrapped lines and stuffed space removed
- */
- public static function unfold_flowed($text)
- {
- $text = preg_split('/\r?\n/', $text);
- $last = -1;
- $q_level = 0;
-
- foreach ($text as $idx => $line) {
- if ($line[0] == '>' && preg_match('/^(>+\s*)/', $line, $regs)) {
- $q = strlen(str_replace(' ', '', $regs[0]));
- $line = substr($line, strlen($regs[0]));
-
- if ($q == $q_level && $line
- && isset($text[$last])
- && $text[$last][strlen($text[$last])-1] == ' '
- ) {
- $text[$last] .= $line;
- unset($text[$idx]);
- }
- else {
- $last = $idx;
- }
- }
- else {
- $q = 0;
- if ($line == '-- ') {
- $last = $idx;
- }
- else {
- // remove space-stuffing
- $line = preg_replace('/^\s/', '', $line);
-
- if (isset($text[$last]) && $line
- && $text[$last] != '-- '
- && $text[$last][strlen($text[$last])-1] == ' '
- ) {
- $text[$last] .= $line;
- unset($text[$idx]);
- }
- else {
- $text[$idx] = $line;
- $last = $idx;
- }
- }
- }
- $q_level = $q;
- }
-
- return implode("\r\n", $text);
- }
-
-
- /**
- * Wrap the given text to comply with RFC 2646
- *
- * @param string $text Text to wrap
- * @param int $length Length
- * @param string $charset Character encoding of $text
- *
- * @return string Wrapped text
- */
- public static function format_flowed($text, $length = 72, $charset=null)
- {
- $text = preg_split('/\r?\n/', $text);
-
- foreach ($text as $idx => $line) {
- if ($line != '-- ') {
- if ($line[0] == '>' && preg_match('/^(>+ {0,1})+/', $line, $regs)) {
- $level = substr_count($regs[0], '>');
- $prefix = str_repeat('>', $level) . ' ';
- $line = rtrim(substr($line, strlen($regs[0])));
- $line = $prefix . self::wordwrap($line, $length - $level - 2, " \r\n$prefix", false, $charset);
- }
- else if ($line) {
- $line = self::wordwrap(rtrim($line), $length - 2, " \r\n", false, $charset);
- // space-stuffing
- $line = preg_replace('/(^|\r\n)(From| |>)/', '\\1 \\2', $line);
- }
-
- $text[$idx] = $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
- * @param string $charset Charset of $string
- *
- * @return string Text
- */
- public static function wordwrap($string, $width=75, $break="\n", $cut=false, $charset=null)
- {
- if ($charset && function_exists('mb_internal_encoding'))
- mb_internal_encoding($charset);
-
- $para = preg_split('/\r?\n/', $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 .= $break;
- }
- }
-
- if ($charset && function_exists('mb_internal_encoding'))
- mb_internal_encoding(RCMAIL_CHARSET);
-
- 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;
- }
-
-}
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