module Sisimai::Lhost::McAfee
Sisimai::Lhost::McAfee
parses a bounce email which created by McAfee
Email Appliance. Methods in the module are called from only Sisimai::Message
.
Constants
- Indicators
- ReBackbone
- ReFailures
- StartingOf
Public Class Methods
description()
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# File lib/sisimai/lhost/mcafee.rb, line 115 def description; return 'McAfee Email Appliance'; end
make(mhead, mbody)
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Parse bounce messages from McAfee
Email Appliance @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/mcafee.rb, line 27 def make(mhead, mbody) # X-NAI-Header: Modified by McAfee Email and Web Security Virtual Appliance return nil unless mhead['x-nai-header'] return nil unless mhead['x-nai-header'].start_with?('Modified by McAfee ') return nil unless mhead['subject'] == 'Delivery Status' require 'sisimai/rfc1894' fieldtable = Sisimai::RFC1894.FIELDTABLE 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 diagnostic = '' # (String) Alternative diagnostic message 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 delivery status part readcursor |= Indicators[:deliverystatus] if e.include?(StartingOf[:message][0]) next end next if (readcursor & Indicators[:deliverystatus]) == 0 next if e.empty? # Content-Type: text/plain; name="deliveryproblems.txt" # # --- The following addresses had delivery problems --- # # <user@example.com> (User unknown user@example.com) # # --------------Boundary-00=_00000000000000000000 # Content-Type: message/delivery-status; name="deliverystatus.txt" # v = dscontents[-1] if cv = e.match(/\A[<]([^ ]+[@][^ ]+)[>][ \t]+[(](.+)[)]\z/) # <kijitora@example.co.jp> (Unknown user kijitora@example.co.jp) if v['recipient'] # There are multiple recipient addresses in the message body. dscontents << Sisimai::Lhost.DELIVERYSTATUS v = dscontents[-1] end v['recipient'] = cv[1] diagnostic = cv[2] recipients += 1 elsif f = Sisimai::RFC1894.match(e) # "e" matched with any field defined in RFC3464 o = Sisimai::RFC1894.field(e) unless o # Fallback code for empty value or invalid formatted value # - Original-Recipient: <kijitora@example.co.jp> if cv = e.match(/\AOriginal-Recipient:[ ]*([^ ]+)\z/) v['alias'] = Sisimai::Address.s3s4(cv[1]) end next end next unless fieldtable[o[0]] v[fieldtable[o[0]]] = o[2] 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 return nil unless recipients > 0 dscontents.each do |e| e['diagnosis'] = Sisimai::String.sweep(e['diagnosis'] || diagnostic) ReFailures.each_key do |r| # Verify each regular expression of session errors next unless e['diagnosis'] =~ ReFailures[r] e['reason'] = r break end end return { 'ds' => dscontents, 'rfc822' => emailsteak[1] } end