Module: Sisimai::Lhost::Verizon

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

Overview

Sisimai::Lhost::Verizon decodes a bounce email which created by Verizon www.verizon.com/. Methods in the module are called from only Sisimai::Message.

Constant Summary collapse

Indicators = 
Sisimai::Lhost.INDICATORS

Class Method Summary collapse

Class Method Details

.description ⇒ Object 



150
 
# File 'lib/sisimai/lhost/verizon.rb', line 150

def description; return 'Verizon Wireless: https://www.verizonwireless.com'; end

.inquire(mhead, mbody) ⇒ Hash, Nil

This method is abstract.

Decodes the bounce message from Verizon

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/verizon.rb', line 14

def inquire(mhead, mbody)
  match = -1
  while true
    # Check the value of "From" header
    # :'subject' => %r/Undeliverable Message/,
    break if mhead['received'].none? { |a| a.include?('.vtext.com (') }
    match = 1 if mhead['from'] == 'post_master@vtext.com'
    match = 0 if Sisimai::String.aligned(mhead['from'], ['sysadmin@', '.vzwpix.com'])
    break
  end
  return nil if match < 0

  boundaries = []
  dscontents = [Sisimai::Lhost.DELIVERYSTATUS]; v = nil
  emailparts = []
  readcursor = 0      # (Integer) Points the current cursor position
  recipients = 0      # (Integer) The number of 'Final-Recipient' header
  senderaddr = ''     # (String) Sender address in the message body
  subjecttxt = ''     # (String) Subject of the original message
  messagesof = {}     # (Hash) Error message patterns

  if match == 1
    # vtext.com
    markingsof = {message: ['Error: ']}
    messagesof = {
      # The attempted recipient address does not exist.
      'userunknown' => ['550 - Requested action not taken: no such user here'],
    }
    boundaries = [Sisimai::RFC2045.boundary(mhead['content-type'], 1)]
    emailparts = Sisimai::RFC5322.part(mbody, boundaries)
    bodyslices = emailparts[0].split("\n")

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

      # Message details:
      #   Subject: Test message
      #   Sent date: Wed Jun 12 02:21:53 GMT 2013
      #   MAIL FROM: *******@hg.example.com
      #   RCPT TO: *****@vtext.com
      v = dscontents[-1]
      if e.start_with?('  RCPT TO: ')
        if v["recipient"] != ""
          # There are multiple recipient addresses in the message body.
          dscontents << Sisimai::Lhost.DELIVERYSTATUS
          v = dscontents[-1]
        end

        v['recipient'] = e[11, e.size]
        recipients += 1
        next

      elsif e.start_with?('  MAIL FROM: ')
        #   MAIL FROM: *******@hg.example.com
        senderaddr = e[13, e.size] if senderaddr.empty?

      elsif e.start_with?('  Subject: ')
        #   Subject:
        subjecttxt = e[11, e.size] if subjecttxt.empty?
      else
        # 550 - Requested action not taken: no such user here
        v['diagnosis'] = e if e.include?(' - ')
      end
    end
  else
    # vzwpix.com
    startingof = {message: ['Message could not be delivered to mobile']}
    messagesof = {'userunknown' => ['No valid recipients for this MM']}
    boundaries = [Sisimai::RFC2045.boundary(mhead['content-type'], 1)]
    emailparts = Sisimai::RFC5322.part(mbody, boundaries)
    bodyslices = emailparts[0].split("\n")

    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?

      # Original Message:
      # From: kijitora <kijitora@example.jp>
      # To: 0000000000@vzwpix.com
      # Subject: test for bounce
      # Date:  Wed, 20 Jun 2013 10:29:52 +0000
      v = dscontents[-1]
      if e.start_with?('To: ')
        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[4, e.size])
        recipients += 1
        next

      elsif e.start_with?('From: ')
        # From: kijitora <kijitora@example.jp>
        senderaddr = Sisimai::Address.s3s4(e[4, e.size]) if senderaddr.empty?

      elsif e.start_with?('Subject: ')
        #   Subject:
        subjecttxt = e[9, e.size] if subjecttxt.empty?
      else
        # Message could not be delivered to mobile.
        # Error: No valid recipients for this MM
        v['diagnosis'] = e[7, e.size] if e.start_with?('Error: ')
      end
    end
  end
  return nil if recipients == 0

  # Set the value of "MAIL FROM:" and "From:"
  emailparts[1] += "From: #{senderaddr}\n"    if emailparts[1].include?("\nFrom: ")    == false
  emailparts[1] += "Subject: #{subjecttxt}\n" if emailparts[1].include?("\nSubject: ") == false

  dscontents.each do |e|
    messagesof.each_key do |r|
      # Verify each regular expression of session errors
      next if messagesof[r].none? { |a| e['diagnosis'].include?(a) }
      e['reason'] = r
      break
    end
  end

  return {"ds" => dscontents, "rfc822" => emailparts[1]}
end