diff options
Diffstat (limited to 'lib/mail_handler/backends')
| -rw-r--r-- | lib/mail_handler/backends/mail_backend.rb | 70 |
1 files changed, 61 insertions, 9 deletions
diff --git a/lib/mail_handler/backends/mail_backend.rb b/lib/mail_handler/backends/mail_backend.rb index f7893a60d..03d78e0a3 100644 --- a/lib/mail_handler/backends/mail_backend.rb +++ b/lib/mail_handler/backends/mail_backend.rb @@ -1,4 +1,35 @@ require 'mail' +require 'mapi/msg' +require 'mapi/convert' + +module Mail + class Message + + # The behaviour of the 'to' and 'cc' methods have changed + # between TMail and Mail; this monkey-patching restores the + # TMail behaviour. The key difference is that when there's an + # invalid address, e.g. '<foo@example.org', Mail returns the + # string as an ActiveSupport::Multibyte::Chars, whereas + # previously TMail would return nil. + + alias_method :old_to, :to + alias_method :old_cc, :cc + + def clean_addresses(old_method, val) + old_result = self.send(old_method, val) + old_result.class == Mail::AddressContainer ? old_result : nil + end + + def to(val = nil) + self.clean_addresses :old_to, val + end + + def cc(val = nil) + self.clean_addresses :old_cc, val + end + + end +end module MailHandler module Backends @@ -38,7 +69,11 @@ module MailHandler # Get the body of a mail part def get_part_body(part) - part.body.decoded + decoded = part.body.decoded + if part.content_type =~ /^text\// + decoded = convert_string_to_utf8_or_binary decoded, part.charset + end + decoded end # Return the first from field if any @@ -141,9 +176,14 @@ module MailHandler end elsif get_content_type(part) == 'application/ms-tnef' # A set of attachments in a TNEF file - part.rfc822_attachment = mail_from_tnef(part.body.decoded) - if part.rfc822_attachment.nil? - # Attached mail didn't parse, so treat as binary + begin + part.rfc822_attachment = mail_from_tnef(part.body.decoded) + if part.rfc822_attachment.nil? + # Attached mail didn't parse, so treat as binary + part.content_type = 'application/octet-stream' + end + rescue TNEFParsingError + part.rfc822_attachment = nil part.content_type = 'application/octet-stream' end end @@ -160,8 +200,11 @@ module MailHandler part.parts.each{ |sub_part| expand_and_normalize_parts(sub_part, parent_mail) } else part_filename = get_part_file_name(part) - charset = part.charset # save this, because overwriting content_type also resets charset - + if part.has_charset? + original_charset = part.charset # save this, because overwriting content_type also resets charset + else + original_charset = nil + end # Don't allow nil content_types if get_content_type(part).nil? part.content_type = 'application/octet-stream' @@ -180,7 +223,9 @@ module MailHandler # Use standard content types for Word documents etc. part.content_type = normalise_content_type(get_content_type(part)) decode_attached_part(part, parent_mail) - part.charset = charset + if original_charset + part.charset = original_charset + end end end @@ -228,8 +273,15 @@ module MailHandler def _get_attachment_leaves_recursive(part, within_rfc822_attachment, parent_mail) leaves_found = [] if part.multipart? - raise "no parts on multipart mail" if part.parts.size == 0 - if part.sub_type == 'alternative' + if part.parts.size == 0 + # This is typically caused by a missing final + # MIME boundary, in which case the text of the + # message (including the opening MIME + # boundary) is in part.body, so just add this + # part as a leaf and treat it as text/plain: + part.content_type = "text/plain" + leaves_found += [part] + elsif part.sub_type == 'alternative' best_part = choose_best_alternative(part) leaves_found += _get_attachment_leaves_recursive(best_part, within_rfc822_attachment, |