Module: Sisimai::Lhost::GoogleGroups

Defined in:
lib/sisimai/lhost/googlegroups.rb

Overview

Sisimai::Lhost::GoogleGroups decodes a bounce email which created by Google Groups groups.google.com. Methods in the module are called from only Sisimai::Message.

Constant Summary collapse

Boundaries = 
['----- Original message -----', 'Content-Type: message/rfc822'].freeze

Class Method Summary collapse

Class Method Details

.description ⇒ Object 



71
 
# File 'lib/sisimai/lhost/googlegroups.rb', line 71

def description; return 'Google Groups: https://groups.google.com'; end

.inquire(mhead, mbody) ⇒ Hash, Nil

This method is abstract.

Decodes the bounce message from Google Groups

Parameters:

  • mhead (Hash) —

    Message headers of a bounce email

  • mbody (String) —

    Message body of a bounce email

Returns:

  • (Hash) —

    Bounce data list and message/rfc822 part

  • (Nil) —

    it failed to decode or the arguments are missing

Since:

  • v4.25.6



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# File 'lib/sisimai/lhost/googlegroups.rb', line 15

def inquire(mhead, mbody)
  return nil if mbody.include?("Google Group") == false
  return nil if mhead['from'].end_with?('<mailer-daemon@googlemail.com>') == false
  return nil if mhead['subject'].start_with?('Delivery Status Notification') == false
  return nil if mhead['x-failed-recipients'].nil?

  # Hello kijitora@libsisimai.org,
  #
  # We're writing to let you know that the group you tried to contact (group-name)
  # may not exist, or you may not have permission to post messages to the group.
  # A few more details on why you weren't able to post:
  #
  #  * You might have spelled or formatted the group name incorrectly.
  #  * The owner of the group may have removed this group.
  #  * You may need to join the group before receiving permission to post.
  #  * This group may not be open to posting.
  #
  # If you have questions related to this or any other Google Group,
  # visit the Help Center at https://groups.google.com/support/.
  #
  # Thanks,
  #
  # Google Groups
  dscontents = [Sisimai::Lhost.DELIVERYSTATUS]; v = dscontents[-1]
  emailparts = Sisimai::RFC5322.part(mbody, Boundaries)
  recipients = 0

  # * You might have spelled or formatted the group name incorrectly.
  # * The owner of the group may have removed this group.
  # * You may need to join the group before receiving permission to post.
  # * This group may not be open to posting.
  entiremesg = emailparts[0].split(/\n\n/, 5).slice(0, 4).join(' ').tr("\n", ' ');
  receivedby = mhead['received'] || []
  recordwide = {
    'diagnosis' => entiremesg,
    'reason'    => 'onhold',
    'rhost'     => Sisimai::RFC5322.received(receivedby[0])[1],
  }
  recordwide['reason'] = 'rejected' if emailparts[0].scan(/^[ ]?[*][ ]?/).size == 4

  mhead['x-failed-recipients'].split(',').each do |e|
    # X-Failed-Recipients: neko@example.jp, nyaan@example.org, ...
    next if Sisimai::Address.is_emailaddress(e) == false

    if v["recipient"] != ""
      # There are multiple recipient addresses in the message body.
      dscontents << Sisimai::Lhost.DELIVERYSTATUS
      v = dscontents[-1]
    end
    v['recipient'] = Sisimai::Address.s3s4(e)
    recipients += 1
    recordwide.each_key { |r| v[r] = recordwide[r] }
  end
  return nil if recipients == 0
  return { 'ds' => dscontents, 'rfc822' => emailparts[1] }
end