pypff: how do I read attachment data?

[mhechthz]

I do this:

attachments = message.attachments            
if attachments:
    for attachment in attachments:
        attachment_data = attachment.read_buffer()
        ...

than I get an exception:

pypff_attachment_read_buffer: invalid argument read size value less than zero.

If there are no attachements I get Exception:

pypff_message_get_attachments: unable to retrieve number of attachments. libpff_local_descriptors_node_get_entry_data: invalid local descriptors node. libpff_local_descriptors_get_value_by_identifier: unable to retrieve node entry: 0 data. libpff_local_descriptors_tree_get_value_by_identifier: unable to retrieve index value: 1649 from index. libpff_table_get_local_descriptors_value_by_identifier: unable to retrieve local descriptor identifier: 1649. libpff_item_values_get_local_descriptors_value_by_identifier: unable to retrieve local descriptor identifier: 1649. libpff_message_determine_attachments: unable to retrieve local descriptor identifier: 1649. libpff_message_get_number_of_attachments: unable to determine attachments.

which is not nice but can be catched.

What can I do to properly get the attachements?

[mhechthz]

ok, found out that i need to specify the size by:

size = attachment.get_size()
attachment_data = attachment.read_buffer(size)

but how to get the name and the type of the attachement?