module Sisimai::Lhost::Biglobe

Sisimai::Lhost::Biglobe parses a bounce email which created by BIGLOBE. Methods in the module are called from only Sisimai::Message.

Constants

Indicators
MessagesOf
ReBackbone
StartingOf

Public Class Methods

description() click to toggle source
# File lib/sisimai/lhost/biglobe.rb, line 97
def description; return 'BIGLOBE: https://www.biglobe.ne.jp'; end
make(mhead, mbody) click to toggle source

Parse bounce messages from Biglobe @param [Hash] mhead Message headers of a bounce email @param [String] mbody Message body of a bounce email @return [Hash] Bounce data list and message/rfc822 part @return [Nil] it failed to parse or the arguments are missing

# File lib/sisimai/lhost/biglobe.rb, line 25
def make(mhead, mbody)
  return nil unless mhead['from'] =~ /postmaster[@](?:biglobe|inacatv|tmtv|ttv)[.]ne[.]jp/
  return nil unless mhead['subject'].start_with?('Returned mail:')

  dscontents = [Sisimai::Lhost.DELIVERYSTATUS]
  emailsteak = Sisimai::RFC5322.fillet(mbody, ReBackbone)
  bodyslices = emailsteak[0].split("\n")
  readcursor = 0      # (Integer) Points the current cursor position
  recipients = 0      # (Integer) The number of 'Final-Recipient' header
  v = nil

  while e = bodyslices.shift do
    # Read error messages and delivery status lines from the head of the email
    # to the previous line of the beginning of the original message.
    if readcursor == 0
      # Beginning of the bounce message or delivery status part
      readcursor |= Indicators[:deliverystatus] if e == StartingOf[:message][0]
      next
    end
    next if (readcursor & Indicators[:deliverystatus]) == 0
    next if e.empty?

    # This is a MIME-encapsulated message.
    #
    # ----_Biglobe000000/00000.biglobe.ne.jp
    # Content-Type: text/plain; charset="iso-2022-jp"
    #
    #    ----- The following addresses had delivery problems -----
    # ********@***.biglobe.ne.jp
    #
    #    ----- Non-delivered information -----
    # The number of messages in recipient's mailbox exceeded the local limit.
    #
    # ----_Biglobe000000/00000.biglobe.ne.jp
    # Content-Type: message/rfc822
    #
    v = dscontents[-1]

    if cv = e.match(/\A([^ ]+[@][^ ]+)\z/)
      #    ----- The following addresses had delivery problems -----
      # ********@***.biglobe.ne.jp
      if v['recipient']
        # There are multiple recipient addresses in the message body.
        dscontents << Sisimai::Lhost.DELIVERYSTATUS
        v = dscontents[-1]
      end

      r = Sisimai::Address.s3s4(cv[1])
      next unless Sisimai::RFC5322.is_emailaddress(r)
      v['recipient'] = r
      recipients += 1
    else
      next if e =~ /\A[^\w]/
      v['diagnosis'] ||= ''
      v['diagnosis'] << e + ' '
    end
  end
  return nil unless recipients > 0

  dscontents.each do |e|
    e['diagnosis'] = Sisimai::String.sweep(e['diagnosis'])

    MessagesOf.each_key do |r|
      # Verify each regular expression of session errors
      next unless MessagesOf[r].any? { |a| e['diagnosis'].include?(a) }
      e['reason'] = r
      break
    end
  end

  return { 'ds' => dscontents, 'rfc822' => emailsteak[1] }
end