module Sisimai::Lhost::Courier
Sisimai::Lhost::Courier
parses a bounce email which created by Courier
MTA. Methods in the module are called from only Sisimai::Message
.
Constants
- Indicators
- MessagesOf
- ReBackbone
- StartingOf
Public Class Methods
description()
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# File lib/sisimai/lhost/courier.rb, line 142 def description; return 'Courier MTA'; end
make(mhead, mbody)
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Parse bounce messages from Courier
MTA @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/courier.rb, line 32 def make(mhead, mbody) match = 0 match += 1 if mhead['from'].include?('Courier mail server at ') match += 1 if mhead['subject'] =~ /(?:NOTICE: mail delivery status[.]|WARNING: delayed mail[.])/ if mhead['message-id'] # Message-ID: <courier.4D025E3A.00001792@5jo.example.org> match += 1 if mhead['message-id'] =~ /\A[<]courier[.][0-9A-F]+[.]/ end return nil unless match > 0 require 'sisimai/rfc1894' fieldtable = Sisimai::RFC1894.FIELDTABLE permessage = {} # (Hash) Store values of each Per-Message field dscontents = [Sisimai::Lhost.DELIVERYSTATUS] emailsteak = Sisimai::RFC5322.fillet(mbody, ReBackbone) bodyslices = emailsteak[0].split("\n") readslices = [''] readcursor = 0 # (Integer) Points the current cursor position recipients = 0 # (Integer) The number of 'Final-Recipient' header commandtxt = '' # (String) SMTP Command name begin with the string '>>>' 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. readslices << e # Save the current line for the next loop if readcursor == 0 # Beginning of the bounce message or message/delivery-status part if e.include?(StartingOf[:message][0]) || e.include?(StartingOf[:message][1]) readcursor |= Indicators[:deliverystatus] next end end next if (readcursor & Indicators[:deliverystatus]) == 0 next if e.empty? if f = Sisimai::RFC1894.match(e) # "e" matched with any field defined in RFC3464 next unless o = Sisimai::RFC1894.field(e) v = dscontents[-1] if o[-1] == 'addr' # Final-Recipient: rfc822; kijitora@example.jp # X-Actual-Recipient: rfc822; kijitora@example.co.jp if o[0] == 'final-recipient' # Final-Recipient: rfc822; kijitora@example.jp if v['recipient'] # There are multiple recipient addresses in the message body. dscontents << Sisimai::Lhost.DELIVERYSTATUS v = dscontents[-1] end v['recipient'] = o[2] recipients += 1 else # X-Actual-Recipient: rfc822; kijitora@example.co.jp v['alias'] = o[2] end elsif o[-1] == 'code' # Diagnostic-Code: SMTP; 550 5.1.1 <userunknown@example.jp>... User Unknown v['spec'] = o[1] v['diagnosis'] = o[2] else # Other DSN fields defined in RFC3464 next unless fieldtable[o[0]] v[fieldtable[o[0]]] = o[2] next unless f == 1 permessage[fieldtable[o[0]]] = o[2] end else # The line does not begin with a DSN field defined in RFC3464 if cv = e.match(/\A[>]{3}[ ]+([A-Z]{4})[ ]?/) # Your message to the following recipients cannot be delivered: # # <kijitora@example.co.jp>: # mx.example.co.jp [74.207.247.95]: # >>> RCPT TO:<kijitora@example.co.jp> # <<< 550 5.1.1 <kijitora@example.co.jp>... User Unknown # next unless commandtxt.empty? commandtxt = cv[1] else # Continued line of the value of Diagnostic-Code field next unless readslices[-2].start_with?('Diagnostic-Code:') next unless cv = e.match(/\A[ \t]+(.+)\z/) v['diagnosis'] << ' ' << cv[1] readslices[-1] = 'Diagnostic-Code: ' << e end end end return nil unless recipients > 0 dscontents.each do |e| # Set default values if each value is empty. permessage.each_key { |a| e[a] ||= permessage[a] || '' } e['command'] ||= commandtxt || '' 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