Module: Sisimai::Lhost::ApacheJames

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

Overview

Sisimai::Lhost::ApacheJames decodes a bounce email which created by ApacheJames james.apache.org/. Methods in the module are called from only Sisimai::Message.

Constant Summary collapse

Indicators = 
Sisimai::Lhost.INDICATORS
Boundaries = 
["Content-Type: message/rfc822"].freeze
StartingOf = 
{
  # apache-james-2.3.2/src/java/org/apache/james/transport/mailets/
  #   AbstractNotify.java|124:  out.println("Error message below:");
  #   AbstractNotify.java|128:  out.println("Message details:");
  message: ["Message details:"],
}.freeze

Class Method Summary collapse

Class Method Details

.description ⇒ Object 



108
 
# File 'lib/sisimai/lhost/apachejames.rb', line 108

def description; return 'Java Apache Mail Enterprise Server'; end

.inquire(mhead, mbody) ⇒ Hash, Nil

This method is abstract.

decodes the bounce message from Apache James

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/apachejames.rb', line 22

def inquire(mhead, mbody)
  match  = 0
  match += 1 if mhead["subject"] == "[BOUNCE]"
  match += 1 if mhead["message-id"].to_s.include?(".JavaMail.")
  match += 1 if mhead["received"].any? { |a| a.include?("JAMES SMTP Server") }
  return nil if match == 0

  dscontents = [Sisimai::Lhost.DELIVERYSTATUS]; v = dscontents[-1]
  emailparts = Sisimai::RFC5322.part(mbody, Boundaries)
  bodyslices = emailparts[0].split("\n")
  readcursor = 0                # Points the current cursor position
  recipients = 0                # The number of 'Final-Recipient' header
  alternates = ["", "", "", ""] # [Envelope-From, Header-From, Date, Subject]

  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
      if e.start_with?(StartingOf[:message][0])
        # Message details:
        #   Subject: Nyaaan
        readcursor |= Indicators[:deliverystatus]
        next
      end
      v["diagnosis"] += "#{e }" if e != ""
      next
    end
    next if (readcursor & Indicators[:deliverystatus]) == 0 || e.empty?

    # Message details:
    #   Subject: Nyaaan
    #   Sent date: Thu Apr 29 01:20:50 JST 2015
    #   MAIL FROM: shironeko@example.jp
    #   RCPT TO: kijitora@example.org
    #   From: Neko <shironeko@example.jp>
    #   To: kijitora@example.org
    #   Size (in bytes): 1024
    #   Number of lines: 64
    if e.start_with?("  RCPT TO: ")
      #   RCPT TO: kijitora@example.org
      if v["recipient"] != ""
        # There are multiple recipient addresses in the message body.
        dscontents << Sisimai::Lhost.DELIVERYSTATUS
        v = dscontents[-1]
      end
      v["recipient"] = e[12, e.size]
      recipients += 1

    elsif e.start_with?("  Sent date: ")
      #   Sent date: Thu Apr 29 01:20:50 JST 2015
      v["date"]     = e[13, e.size]
      alternates[2] = v["date"]

    elsif e.start_with?("  Subject: ")
      #   Subject: Nyaaan
      alternates[3] = e[11, e.size]

    elsif e.start_with?("  MAIL FROM: ")
      #   MAIL FROM: shironeko@example.jp
      alternates[0] = e[13, e.size]

    elsif e.start_with?("  From: ")
      #   From: Neko <shironeko@example.jp>
      alternates[1] = e[8, e.size]

    end
  end
  return nil if recipients == 0

  if emailparts[1].empty?
    # The original message is empty
    emailparts[1] += sprintf("From: %s\n", alternates[1]) if alternates[1] != ""
    emailparts[1] += sprintf("Date: %s\n", alternates[2]) if alternates[2] != ""
  end
  if emailparts[1].include?("Return-Path: ") == false
    # Set the envelope from address as a Return-Path: header
    emailparts[1] += sprintf("Return-Path: <%s>\n", alternates[0]) if alternates[0] != ""
  end
  if emailparts[1].include?("\nSubject: ") == false
    # Set the envelope from address as a Return-Path: header
    emailparts[1] += sprintf("Subject: %s\n", alternates[3]) if alternates[3] != ""
  end

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