module Sisimai::Lhost::X2
Sisimai::Lhost::X2
parses a bounce email which created by Unknown MTA #2. Methods in the module are called from only Sisimai::Message
.
Constants
- Indicators
- ReBackbone
- StartingOf
Public Class Methods
description()
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# File lib/sisimai/lhost/x2.rb, line 67 def description; return 'Unknown MTA #2'; end
make(mhead, mbody)
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Parse bounce messages from Unknown MTA #2 @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/x2.rb, line 18 def make(mhead, mbody) return nil unless mhead['from'].include?('MAILER-DAEMON@') return nil unless mhead['subject'] =~ %r/\A(?>Delivery failure|fail(?:ure|ed) delivery)/ 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.start_with?(StartingOf[:message][0]) next end next if (readcursor & Indicators[:deliverystatus]) == 0 next if e.empty? # Message from example.com. # Unable to deliver message to the following address(es). # # <kijitora@example.com>: # This user doesn't have a example.com account (kijitora@example.com) [0] v = dscontents[-1] if cv = e.match(/\A[<]([^ ]+[@][^ ]+)[>]:\z/) # <kijitora@example.com>: if v['recipient'] # There are multiple recipient addresses in the message body. dscontents << Sisimai::Lhost.DELIVERYSTATUS v = dscontents[-1] end v['recipient'] = cv[1] recipients += 1 else # This user doesn't have a example.com account (kijitora@example.com) [0] v['diagnosis'] ||= '' v['diagnosis'] << ' ' << e end end return nil unless recipients > 0 dscontents.each { |e| e['diagnosis'] = Sisimai::String.sweep(e['diagnosis']) } return { 'ds' => dscontents, 'rfc822' => emailsteak[1] } end