Merge pull request #252 from corbosman/uufix

Aleksander Machniak

2014-12-23 fa5dabb5747f12fd63a5a0d2b7a7e49de714afa4

 program/lib/Roundcube/rcube_message.php

@@ -211,16 +211,19 @@
                }

                $level = explode('.', $part->mime_id);
                $depth = count($level);

                // Check if the part belongs to higher-level's multipart part
                // this can be alternative/related/signed/encrypted, but not mixed
                // this can be alternative/related/signed/encrypted or mixed
                while (array_pop($level) !== null) {
                    if (!count($level)) {
                    $parent_depth = count($level);
                    if (!$parent_depth) {
                        return true;
                    }

                    $parent = $this->mime_parts[join('.', $level)];
                    if (!preg_match('/^multipart\/(alternative|related|signed|encrypted)$/', $parent->mimetype)) {
                    if (!preg_match('/^multipart\/(alternative|related|signed|encrypted|mixed)$/', $parent->mimetype)
                        || ($parent->mimetype == 'multipart/mixed' && $parent_depth < $depth - 1)) {
                        continue 2;
                    }
                }
@@ -529,8 +532,9 @@
                    $part_mimetype = $mail_part->real_mimetype;
                    list($primary_type, $secondary_type) = explode('/', $part_mimetype);
                }
                else
                    $part_mimetype = $mail_part->mimetype;
                else {
                    $part_mimetype = $part_orig_mimetype = $mail_part->mimetype;
                  }

                // multipart/alternative
                if ($primary_type == 'multipart') {
@@ -761,28 +765,43 @@
        }

        $parts = array();
        // FIXME: line length is max.65?
        $uu_regexp = '/begin [0-7]{3,4} ([^\n]+)\n/s';
        
        // uuencode regexp
        $uu_regexp = '/^(begin [0-7]{3,4} ([^\n]+)\n)(([\x21-\x60]{0,65}\n){0,2})([\x21-\x60]{0,65}|`\nend)\s*\n/sm';

        if (preg_match_all($uu_regexp, $part->body, $matches, PREG_SET_ORDER)) {
            // update message content-type
            $part->ctype_primary   = 'multipart';
            $part->ctype_secondary = 'mixed';
            $part->mimetype        = $part->ctype_primary . '/' . $part->ctype_secondary;
            $uu_endstring = "`\nend\n";

            // add attachments to the structure
            foreach ($matches as $pid => $att) {
                $startpos = strpos($part->body, $att[1]) + strlen($att[1]) + 1; // "\n"
                $endpos = strpos($part->body, $uu_endstring);
                // make sure we're looking at a uuencoded file, and not a false positive
                $uu_lines = explode("\n", $att[3]);
                foreach ($uu_lines as $uu_line) {
                    if ( strlen($uu_line) == 0 ) {
                        continue;
                    }
                    $line_len = (ord(substr($uu_line, 0, 1)) - 32) & 0x3F;
                    $max_code_len = floor( ($line_len+2)/3 ) * 4;
                    $min_code_len = ceil( $line_len/3 * 4);
                    if ( strlen($uu_line)-1 < $min_code_len
                         or strlen($uu_line)-1 > $max_code_len )
                    {
                        // illegal uuencode, break out of 'foreach $matches' loop
                        break 2;
                    }
                }

                $startpos = strpos($part->body, $att[0]) + strlen($att[1]);
                $endpos   = strpos($part->body, $uu_endstring);
                $filebody = substr($part->body, $startpos, $endpos-$startpos);

                // remove attachments bodies from the message body
                $part->body = substr_replace($part->body, "", $startpos, $endpos+strlen($uu_endstring)-$startpos);

                $uu_startpos = $startpos - strlen($att[1]);
                $part->body = substr_replace($part->body, "", $uu_startpos, $endpos+strlen($uu_endstring)-$uu_startpos);
                
                $uupart = new rcube_message_part;

                $uupart->filename = trim($att[1]);
                $uupart->filename = trim($att[2]);
                $uupart->encoding = 'stream';
                $uupart->body     = convert_uudecode($filebody);
                $uupart->size     = strlen($uupart->body);
@@ -796,8 +815,8 @@
                unset($matches[$pid]);
            }

            // remove attachments bodies from the message body
            $part->body = preg_replace($uu_regexp, '', $part->body);
            // mark body as modified so it will not be cached by rcube_imap_cache
            $part->body_modified = true;
        }

        return $parts;