Files
2024-10-14 00:08:40 +02:00

277 lines
11 KiB
Perl

package Sisimai::Bite::Email::Courier;
use parent 'Sisimai::Bite::Email';
use feature ':5.10';
use strict;
use warnings;
my $Indicators = __PACKAGE__->INDICATORS;
my $StartingOf = {
# http://www.courier-mta.org/courierdsn.html
# courier/module.dsn/dsn*.txt
'message' => ['DELAYS IN DELIVERING YOUR MESSAGE', 'UNDELIVERABLE MAIL'],
'rfc822' => ['Content-Type: message/rfc822', 'Content-Type: text/rfc822-headers'],
};
my $MessagesOf = {
# courier/module.esmtp/esmtpclient.c:526| hard_error(del, ctf, "No such domain.");
'hostunknown' => ['No such domain.'],
# courier/module.esmtp/esmtpclient.c:531| hard_error(del, ctf,
# courier/module.esmtp/esmtpclient.c:532| "This domain's DNS violates RFC 1035.");
'systemerror' => ["This domain's DNS violates RFC 1035."],
# courier/module.esmtp/esmtpclient.c:535| soft_error(del, ctf, "DNS lookup failed.");
'networkerror'=> ['DNS lookup failed.'],
};
sub description { 'Courier MTA' }
sub scan {
# Detect an error from Courier MTA
# @param [Hash] mhead Message headers of a bounce email
# @options mhead [String] from From header
# @options mhead [String] date Date header
# @options mhead [String] subject Subject header
# @options mhead [Array] received Received headers
# @options mhead [String] others Other required headers
# @param [String] mbody Message body of a bounce email
# @return [Hash, Undef] Bounce data list and message/rfc822 part
# or Undef if it failed to parse or the
# arguments are missing
# @since v4.0.0
my $class = shift;
my $mhead = shift // return undef;
my $mbody = shift // return undef;
my $match = 0;
$match ||= 1 if index($mhead->{'from'}, 'Courier mail server at ') > -1;
$match ||= 1 if $mhead->{'subject'} =~ /(?:NOTICE: mail delivery status[.]|WARNING: delayed mail[.])/;
if( defined $mhead->{'message-id'} ) {
# Message-ID: <courier.4D025E3A.00001792@5jo.example.org>
$match ||= 1 if $mhead->{'message-id'} =~ /\A[<]courier[.][0-9A-F]+[.]/;
}
return undef unless $match;
my $dscontents = [__PACKAGE__->DELIVERYSTATUS];
my @hasdivided = split("\n", $$mbody);
my $rfc822part = ''; # (String) message/rfc822-headers part
my $rfc822list = []; # (Array) Each line in message/rfc822 part string
my $blanklines = 0; # (Integer) The number of blank lines
my $readcursor = 0; # (Integer) Points the current cursor position
my $recipients = 0; # (Integer) The number of 'Final-Recipient' header
my $commandtxt = ''; # (String) SMTP Command name begin with the string '>>>'
my $connvalues = 0; # (Integer) Flag, 1 if all the value of $connheader have been set
my $connheader = {
'date' => '', # The value of Arrival-Date header
'rhost' => '', # The value of Reporting-MTA header
'lhost' => '', # The value of Received-From-MTA header
};
my $v = undef;
my $p = '';
for my $e ( @hasdivided ) {
# Read each line between the start of the message and the start of rfc822 part.
unless( $readcursor ) {
# Beginning of the bounce message or delivery status part
if( rindex($e, $StartingOf->{'message'}->[0]) > -1 ||
rindex($e, $StartingOf->{'message'}->[1]) > -1 ) {
$readcursor |= $Indicators->{'deliverystatus'};
next;
}
}
unless( $readcursor & $Indicators->{'message-rfc822'} ) {
# Beginning of the original message part
if( index($e, $StartingOf->{'rfc822'}->[0]) == 0 ||
index($e, $StartingOf->{'rfc822'}->[1]) == 0 ) {
$readcursor |= $Indicators->{'message-rfc822'};
next;
}
}
if( $readcursor & $Indicators->{'message-rfc822'} ) {
# After "message/rfc822"
unless( length $e ) {
$blanklines++;
last if $blanklines > 1;
next;
}
push @$rfc822list, $e;
} else {
# Before "message/rfc822"
next unless $readcursor & $Indicators->{'deliverystatus'};
next unless length $e;
if( $connvalues == scalar(keys %$connheader) ) {
# Final-Recipient: rfc822; kijitora@example.co.jp
# Action: failed
# Status: 5.0.0
# Remote-MTA: dns; mx.example.co.jp [192.0.2.95]
# Diagnostic-Code: smtp; 550 5.1.1 <kijitora@example.co.jp>... User Unknown
$v = $dscontents->[-1];
if( $e =~ /\AFinal-Recipient:[ ]*(?:RFC|rfc)822;[ ]*([^ ]+)\z/ ) {
# Final-Recipient: rfc822; kijitora@example.co.jp
if( $v->{'recipient'} ) {
# There are multiple recipient addresses in the message body.
push @$dscontents, __PACKAGE__->DELIVERYSTATUS;
$v = $dscontents->[-1];
}
$v->{'recipient'} = $1;
$recipients++;
} elsif( $e =~ /\AX-Actual-Recipient:[ ]*(?:RFC|rfc)822;[ ]*([^ ]+)\z/ ) {
# X-Actual-Recipient: RFC822; kijitora@example.co.jp
$v->{'alias'} = $1;
} elsif( $e =~ /\AAction:[ ]*(.+)\z/ ) {
# Action: failed
$v->{'action'} = lc $1;
} elsif( $e =~ /\AStatus:[ ]*(\d[.]\d+[.]\d+)/ ) {
# Status: 5.1.1
# Status:5.2.0
# Status: 5.1.0 (permanent failure)
$v->{'status'} = $1;
} elsif( $e =~ /\ARemote-MTA:[ ]*(?:DNS|dns);[ ]*(.+)\z/ ) {
# Remote-MTA: DNS; mx.example.jp
$v->{'rhost'} = lc $1;
if( rindex($v->{'rhost'}, ' ') > -1 ) {
# Get the first element
$v->{'rhost'} = (split(' ', $v->{'rhost'}))[0];
}
} elsif( $e =~ /\ALast-Attempt-Date:[ ]*(.+)\z/ ) {
# Last-Attempt-Date: Fri, 14 Feb 2014 12:30:08 -0500
$v->{'date'} = $1;
} else {
if( $e =~ /\ADiagnostic-Code:[ ]*(.+?);[ ]*(.+)\z/ ) {
# Diagnostic-Code: SMTP; 550 5.1.1 <userunknown@example.jp>... User Unknown
$v->{'spec'} = uc $1;
$v->{'diagnosis'} = $2;
} elsif( index($p, 'Diagnostic-Code:') == 0 && $e =~ /\A[ \t]+(.+)\z/ ) {
# Continued line of the value of Diagnostic-Code header
$v->{'diagnosis'} .= ' '.$1;
$e = 'Diagnostic-Code: '.$e;
}
}
} else {
# This is a delivery status notification from marutamachi.example.org,
# running the Courier mail server, version 0.65.2.
#
# The original message was received on Sat, 11 Dec 2010 12:19:57 +0900
# from [127.0.0.1] (c10920.example.com [192.0.2.20])
#
# ---------------------------------------------------------------------------
#
# UNDELIVERABLE MAIL
#
# 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
#
# ---------------------------------------------------------------------------
if( $e =~ /\A[>]{3}[ ]+([A-Z]{4})[ ]?/ ) {
# >>> DATA
next if $commandtxt;
$commandtxt = $1;
} elsif( $e =~ /\AReporting-MTA:[ ]*(?:DNS|dns);[ ]*(.+)\z/ ) {
# Reporting-MTA: dns; mx.example.jp
next if $connheader->{'rhost'};
$connheader->{'rhost'} = lc $1;
$connvalues++;
} elsif( $e =~ /\AReceived-From-MTA:[ ]*(?:DNS|dns);[ ]*(.+)\z/ ) {
# Received-From-MTA: DNS; x1x2x3x4.dhcp.example.ne.jp
next if $connheader->{'lhost'};
$connheader->{'lhost'} = lc $1;
$connvalues++;
} elsif( $e =~ /\AArrival-Date:[ ]*(.+)\z/ ) {
# Arrival-Date: Wed, 29 Apr 2009 16:03:18 +0900
next if $connheader->{'date'};
$connheader->{'date'} = $1;
$connvalues++;
}
}
} # End of if: rfc822
} continue {
# Save the current line for the next loop
$p = $e;
}
return undef unless $recipients;
for my $e ( @$dscontents ) {
# Set default values if each value is empty.
map { $e->{ $_ } ||= $connheader->{ $_ } || '' } keys %$connheader;
$e->{'diagnosis'} = Sisimai::String->sweep($e->{'diagnosis'});
for my $r ( keys %$MessagesOf ) {
# Verify each regular expression of session errors
next unless grep { index($e->{'diagnosis'}, $_) > -1 } @{ $MessagesOf->{ $r } };
$e->{'reason'} = $r;
last;
}
$e->{'agent'} = __PACKAGE__->smtpagent;
$e->{'command'} ||= $commandtxt || '';
}
$rfc822part = Sisimai::RFC5322->weedout($rfc822list);
return { 'ds' => $dscontents, 'rfc822' => $$rfc822part };
}
1;
__END__
=encoding utf-8
=head1 NAME
Sisimai::Bite::Email::Courier - bounce mail parser class for C<Courier MTA>.
=head1 SYNOPSIS
use Sisimai::Bite::Email::Courier;
=head1 DESCRIPTION
Sisimai::Bite::Email::Courier parses a bounce email which created by C<Courier MTA>.
Methods in the module are called from only Sisimai::Message.
=head1 CLASS METHODS
=head2 C<B<description()>>
C<description()> returns description string of this module.
print Sisimai::Bite::Email::Courier->description;
=head2 C<B<smtpagent()>>
C<smtpagent()> returns MTA name.
print Sisimai::Bite::Email::Courier->smtpagent;
=head2 C<B<scan(I<header data>, I<reference to body string>)>>
C<scan()> method parses a bounced email and return results as a array reference.
See Sisimai::Message for more details.
=head1 AUTHOR
azumakuniyuki
=head1 COPYRIGHT
Copyright (C) 2014-2018 azumakuniyuki, All rights reserved.
=head1 LICENSE
This software is distributed under The BSD 2-Clause License.
=cut