Add unsupported alternative parts to attachments list (#1488870)

Aleksander Machniak

2012-12-19 c5d7c941aa16b5bd98cfd56f12bbe7c39bddc608

Add unsupported alternative parts to attachments list (#1488870)

 CHANGELOG

@@ -1,6 +1,7 @@
CHANGELOG Roundcube Webmail
===========================

- Add unsupported alternative parts to attachments list (#1488870)
- Add Compose button on message view page (#1488747)
- Display 'Sender' header in message preview
- Plugin API: Added message_before_send hook

 program/lib/Roundcube/rcube_message.php

@@ -106,6 +106,7 @@
        if (!empty($this->headers->structure)) {
            $this->get_mime_numbers($this->headers->structure);
            $this->parse_structure($this->headers->structure);
            $this->parse_attachments();
        }
        else {
            $this->body = $this->storage->get_body($uid);
@@ -333,7 +334,7 @@
        if ($recursive && is_array($structure->headers) && isset($structure->headers['subject'])) {
            $c = new stdClass;
            $c->type = 'headers';
            $c->headers = &$structure->headers;
            $c->headers = $structure->headers;
            $this->parts[] = $c;
        }

@@ -351,7 +352,7 @@
        // print body if message doesn't have multiple parts
        if ($message_ctype_primary == 'text' && !$recursive) {
            $structure->type = 'content';
            $this->parts[] = &$structure;
            $this->parts[] = $structure;

            // Parse simple (plain text) message body
            if ($message_ctype_secondary == 'plain')
@@ -363,32 +364,39 @@
        // the same for pgp signed messages
        else if ($mimetype == 'application/pgp' && !$recursive) {
            $structure->type = 'content';
            $this->parts[] = &$structure;
            $this->parts[] = $structure;
        }
        // message contains (more than one!) alternative parts
        else if ($mimetype == 'multipart/alternative'
            && is_array($structure->parts) && count($structure->parts) > 1
        ) {
            // get html/plaintext parts
            $plain_part = $html_part = $print_part = $related_part = null;
            $plain_part   = null;
            $html_part    = null;
            $print_part   = null;
            $related_part = null;
            $attach_part  = null;

            // get html/plaintext parts, other add to attachments list
            foreach ($structure->parts as $p => $sub_part) {
                $sub_mimetype = $sub_part->mimetype;
                $is_multipart = in_array($sub_mimetype, array('multipart/related', 'multipart/mixed', 'multipart/alternative'));

                // skip empty text parts
                if (!$sub_part->size && preg_match('#^text/(plain|html|enriched)$#', $sub_mimetype)) {
                if (!$sub_part->size && !$is_multipart) {
                    continue;
                }

                // check if sub part is
                if ($sub_mimetype == 'text/plain')
                if ($is_multipart)
                    $related_part = $p;
                else if ($sub_mimetype == 'text/plain')
                    $plain_part = $p;
                else if ($sub_mimetype == 'text/html')
                    $html_part = $p;
                else if ($sub_mimetype == 'text/enriched')
                    $enriched_part = $p;
                else if (in_array($sub_mimetype, array('multipart/related', 'multipart/mixed', 'multipart/alternative')))
                    $related_part = $p;
                else
                    $attach_part = $p;
            }

            // parse related part (alternative part could be in here)
@@ -404,13 +412,13 @@

            // choose html/plain part to print
            if ($html_part !== null && $this->opt['prefer_html']) {
                $print_part = &$structure->parts[$html_part];
                $print_part = $structure->parts[$html_part];
            }
            else if ($enriched_part !== null) {
                $print_part = &$structure->parts[$enriched_part];
                $print_part = $structure->parts[$enriched_part];
            }
            else if ($plain_part !== null) {
                $print_part = &$structure->parts[$plain_part];
                $print_part = $structure->parts[$plain_part];
            }

            // add the right message body
@@ -432,10 +440,15 @@

            // add html part as attachment
            if ($html_part !== null && $structure->parts[$html_part] !== $print_part) {
                $html_part = &$structure->parts[$html_part];
                $html_part = $structure->parts[$html_part];
                $html_part->mimetype = 'text/html';

                $this->attachments[] = $html_part;
            }

            // add unsupported/unrecognized parts to attachments list
            if ($attach_part) {
                $this->attachments[] = $structure->parts[$attach_part];
            }
        }
        // this is an ecrypted message -> create a plaintext body with the according message
@@ -561,9 +574,6 @@
                    // regular attachment with valid content type
                    // (content-type name regexp according to RFC4288.4.2)
                    else if (preg_match('/^[a-z0-9!#$&.+^_-]+\/[a-z0-9!#$&.+^_-]+$/i', $part_mimetype)) {
                        if (!$mail_part->filename)
                            $mail_part->filename = 'Part '.$mail_part->mime_id;

                        $this->attachments[] = $mail_part;
                    }
                    // attachment with invalid content type
@@ -628,13 +638,32 @@
        }
        // message is a single part non-text (without filename)
        else if (preg_match('/application\//i', $mimetype)) {
            $structure->filename = 'Part '.$structure->mime_id;
            $this->attachments[] = $structure;
        }
    }


    /**
     * Parse attachment parts
     */
    private function parse_attachments()
    {
        // Attachment must have a name
        foreach ($this->attachments as $attachment) {
            if (!$attachment->filename) {
                $ext = rcube_mime::get_mime_extensions($attachment->mimetype);
                $ext = array_shift($ext);

                $attachment->filename = 'Part_' . $attachment->mime_id;
                if ($ext) {
                    $attachment->filename .= '.' . $ext;
                }
            }
        }
    }


    /**
     * Fill aflat array with references to all parts, indexed by part numbers
     *
     * @param rcube_message_part $part Message body structure