Module: Sisimai::Lhost::Zoho

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

Overview

Sisimai::Lhost::Zoho decodes a bounce email which created by Zoho Mail www.zoho.com/mail/. Methods in the module are called from only Sisimai::Message.

Constant Summary collapse

Indicators = 
Sisimai::Lhost.INDICATORS
Boundaries = 
['Received: from mail.zoho.com by mx.zohomail.com'].freeze
StartingOf = 
{message: ['This message was created automatically by mail delivery']}.freeze

Class Method Summary collapse

Class Method Details

.description ⇒ Object 



92
 
# File 'lib/sisimai/lhost/zoho.rb', line 92

def description; return 'Zoho Mail: https://www.zoho.com'; end

.inquire(mhead, mbody) ⇒ Hash, Nil

This method is abstract.

Decodes the bounce message from Zoho Mail

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



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# File 'lib/sisimai/lhost/zoho.rb', line 17

def inquire(mhead, mbody)
  # X-ZohoMail: Si CHF_MF_NL SS_10 UW48 UB48 FMWL UW48 UB48 SGR3_1_09124_42
  # X-Zoho-Virus-Status: 2
  # X-Mailer: Zoho Mail
  return nil if mhead['x-zohomail'].nil?

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

  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.start_with?(StartingOf[:message][0])
      next
    end
    next if (readcursor & Indicators[:deliverystatus]) == 0 || e.empty?

    # This message was created automatically by mail delivery software.
    # A message that you sent could not be delivered to one or more of its recip=
    # ients. This is a permanent error.=20
    #
    # kijitora@example.co.jp Invalid Address, ERROR_CODE :550, ERROR_CODE :5.1.=
    # 1 <kijitora@example.co.jp>... User Unknown

    # This message was created automatically by mail delivery software.
    # A message that you sent could not be delivered to one or more of its recipients. This is a permanent error.
    #
    # shironeko@example.org Invalid Address, ERROR_CODE :550, ERROR_CODE :Requested action not taken: mailbox unavailable
    v = dscontents[-1]

    if Sisimai::String.aligned(e, ['@', ' ', 'ERROR_CODE :'])
      # kijitora@example.co.jp Invalid Address, ERROR_CODE :550, ERROR_CODE :5.1.=
      if v["recipient"] != ""
        # There are multiple recipient addresses in the message body.
        dscontents << Sisimai::Lhost.DELIVERYSTATUS
        v = dscontents[-1]
      end
      v['recipient'] = e[0, e.index(' ')]
      v['diagnosis'] = e[e.index(' ') + 1, e.size]

      if v['diagnosis'].end_with?('=')
        # Quoted printable
        v['diagnosis'] = v['diagnosis'].chomp('=')
        qprintable = true
      end
      recipients += 1

    elsif e.start_with?('[Status: ') && e.include?('<') && e.include?('>')
      # Expired
      # [Status: Error, Address: <kijitora@6kaku.example.co.jp>, ResponseCode 421, , Host not reachable.]
      if v["recipient"] != ""
        # There are multiple recipient addresses in the message body.
        dscontents << Sisimai::Lhost.DELIVERYSTATUS
        v = dscontents[-1]
      end
      p1 = e.index('<')
      p2 = e.index('>', p1 + 2)
      v['recipient'] = Sisimai::Address.s3s4(e[p1, p2 - p1])
      v['diagnosis'] = e
      recipients += 1
    else
      # Continued line
      next if qprintable == false
      v['diagnosis'] += e
    end
  end
  return nil if recipients == 0
  return {"ds" => dscontents, "rfc822" => emailparts[1]}
end