module Sisimai::Lhost::Amavis
Sisimai::Lhost::Amavis
parses a bounce email which created by amavsid-new. 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/amavis.rb, line 162 def description; return 'amavisd-new: https://www.amavis.org/'; end
make(mhead, mbody)
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Parse bounce messages from amavisd-new @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 @since v4.25.0
# File lib/sisimai/lhost/amavis.rb, line 78 def make(mhead, mbody) # From: "Content-filter at neko1.example.jp" <postmaster@neko1.example.jp> # Subject: Undeliverable mail, MTA-BLOCKED return nil unless mhead['from'].to_s.start_with?('"Content-filter at ') 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") 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 message/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? next unless 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 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['diagnosis'] = Sisimai::String.sweep(e['diagnosis'].to_s.tr("\n", ' ')) q = e['diagnosis'].downcase catch :DETECT_REASON do MessagesOf.each_key do |p| # Try to detect an error reason MessagesOf[p].each do |r| # Try to find an error message including lower-cased string # defined in MessagesOf constant next unless q.include?(r) e['reason'] = p throw :DETECT_REASON end end end end return { 'ds' => dscontents, 'rfc822' => emailsteak[1] } end