diff options
Diffstat (limited to 'lib/mail_handler/backends/tmail_backend.rb')
| -rw-r--r-- | lib/mail_handler/backends/tmail_backend.rb | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/lib/mail_handler/backends/tmail_backend.rb b/lib/mail_handler/backends/tmail_backend.rb index 3f77f9f8b..4df4780a3 100644 --- a/lib/mail_handler/backends/tmail_backend.rb +++ b/lib/mail_handler/backends/tmail_backend.rb @@ -130,6 +130,94 @@ module MailHandler end end + # (This risks losing info if the unchosen alternative is the only one to contain + # useful info, but let's worry about that another time) + def get_attachment_leaves(mail) + return _get_attachment_leaves_recursive(mail, mail) + end + def _get_attachment_leaves_recursive(curr_mail, parent_mail, within_rfc822_attachment = nil) + leaves_found = [] + if curr_mail.multipart? + if curr_mail.parts.size == 0 + raise "no parts on multipart mail" + end + + if curr_mail.sub_type == 'alternative' + # Choose best part from alternatives + best_part = nil + # Take the last text/plain one, or else the first one + curr_mail.parts.each do |m| + if not best_part + best_part = m + elsif m.content_type == 'text/plain' + best_part = m + end + end + # Take an HTML one as even higher priority. (They tend + # to render better than text/plain, e.g. don't wrap links here: + # http://www.whatdotheyknow.com/request/amount_and_cost_of_freedom_of_in#incoming-72238 ) + curr_mail.parts.each do |m| + if m.content_type == 'text/html' + best_part = m + end + end + leaves_found += _get_attachment_leaves_recursive(best_part, parent_mail, within_rfc822_attachment) + else + # Add all parts + curr_mail.parts.each do |m| + leaves_found += _get_attachment_leaves_recursive(m, parent_mail, within_rfc822_attachment) + end + end + else + # XXX Yuck. this section alters various content_type's. That puts + # it into conflict with MailHandler.ensure_parts_counted which it has to be + # called both before and after. It will fail with cases of + # attachments of attachments etc. + charset = curr_mail.charset # save this, because overwriting content_type also resets charset + # Don't allow nil content_types + if curr_mail.content_type.nil? + curr_mail.content_type = 'application/octet-stream' + end + # PDFs often come with this mime type, fix it up for view code + if curr_mail.content_type == 'application/octet-stream' + part_file_name = MailHandler.get_part_file_name(curr_mail) + part_body = MailHandler.get_part_body(curr_mail) + calc_mime = AlaveteliFileTypes.filename_and_content_to_mimetype(part_file_name, part_body) + if calc_mime + curr_mail.content_type = calc_mime + end + end + + # Use standard content types for Word documents etc. + curr_mail.content_type = MailHandler.normalise_content_type(curr_mail.content_type) + if curr_mail.content_type == 'message/rfc822' + MailHandler.ensure_parts_counted(parent_mail) # fills in rfc822_attachment variable + if curr_mail.rfc822_attachment.nil? + # Attached mail didn't parse, so treat as text + curr_mail.content_type = 'text/plain' + end + end + if curr_mail.content_type == 'application/vnd.ms-outlook' || curr_mail.content_type == 'application/ms-tnef' + MailHandler.ensure_parts_counted(parent_mail) # fills in rfc822_attachment variable + if curr_mail.rfc822_attachment.nil? + # Attached mail didn't parse, so treat as binary + curr_mail.content_type = 'application/octet-stream' + end + end + # If the part is an attachment of email + if curr_mail.content_type == 'message/rfc822' || curr_mail.content_type == 'application/vnd.ms-outlook' || curr_mail.content_type == 'application/ms-tnef' + MailHandler.ensure_parts_counted(parent_mail) # fills in rfc822_attachment variable + leaves_found += _get_attachment_leaves_recursive(curr_mail.rfc822_attachment, parent_mail, curr_mail.rfc822_attachment) + else + # Store leaf + curr_mail.within_rfc822_attachment = within_rfc822_attachment + leaves_found += [curr_mail] + end + # restore original charset + curr_mail.charset = charset + end + return leaves_found + end def address_from_name_and_email(name, email) if !MySociety::Validate.is_valid_email(email) |