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

211 lines
7.3 KiB
Perl

package Sisimai::Bite::Email::MailMarshalSMTP;
use parent 'Sisimai::Bite::Email';
use feature ':5.10';
use strict;
use warnings;
my $Indicators = __PACKAGE__->INDICATORS;
my $StartingOf = {
'message' => ['Your message:'],
'error' => ['Could not be delivered because of'],
'rcpts' => ['The following recipients were affected:'],
};
my $MarkingsOf = { 'rfc822' => undef };
sub description { 'Trustwave Secure Email Gateway' }
sub scan {
# Detect an error from MailMarshalSMTP
# @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 v4.1.9
my $class = shift;
my $mhead = shift // return undef;
my $mbody = shift // return undef;
return undef unless index($mhead->{'subject'}, 'Undeliverable Mail: "') == 0;
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 $boundary00 = ''; # (String) Boundary string
my $endoferror = 0; # (Integer) Flag for the end of error message
my $v = undef;
$boundary00 = Sisimai::MIME->boundary($mhead->{'content-type'});
if( $boundary00 ) {
# Convert to regular expression
$boundary00 = '--'.$boundary00.'--';
$MarkingsOf->{'rfc822'} = qr/\A\Q$boundary00\E\z/;
} else {
$MarkingsOf->{'rfc822'} = qr/\A[ \t]*[+]+[ \t]*\z/;
}
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
$readcursor |= $Indicators->{'deliverystatus'} if $e eq $StartingOf->{'message'}->[0];
}
unless( $readcursor & $Indicators->{'message-rfc822'} ) {
# Beginning of the original message part
$readcursor |= $Indicators->{'message-rfc822'} if $e =~ $MarkingsOf->{'rfc822'};
}
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'};
last if $e =~ $MarkingsOf->{'rfc822'};
# Your message:
# From: originalsender@example.com
# Subject: ...
#
# Could not be delivered because of
#
# 550 5.1.1 User unknown
#
# The following recipients were affected:
# dummyuser@blabla.xxxxxxxxxxxx.com
$v = $dscontents->[-1];
if( $e =~ /\A[ \t]{4}([^ ]+[@][^ ]+)\z/ ) {
# The following recipients were affected:
# dummyuser@blabla.xxxxxxxxxxxx.com
if( $v->{'recipient'} ) {
# There are multiple recipient addresses in the message body.
push @$dscontents, __PACKAGE__->DELIVERYSTATUS;
$v = $dscontents->[-1];
}
$v->{'recipient'} = $1;
$recipients++;
} else {
# Get error message lines
if( $e eq $StartingOf->{'error'}->[0] ) {
# Could not be delivered because of
#
# 550 5.1.1 User unknown
$v->{'diagnosis'} = $e;
} elsif( $v->{'diagnosis'} && ! $endoferror ) {
# Append error messages
$endoferror = 1 if index($e, $StartingOf->{'rcpts'}->[0]) == 0;
next if $endoferror;
$v->{'diagnosis'} .= ' '.$e;
} else {
# Additional Information
# ======================
# Original Sender: <originalsender@example.com>
# Sender-MTA: <10.11.12.13>
# Remote-MTA: <10.0.0.1>
# Reporting-MTA: <relay.xxxxxxxxxxxx.com>
# MessageName: <B549996730000.000000000001.0003.mml>
# Last-Attempt-Date: <16:21:07 seg, 22 Dezembro 2014>
if( $e =~ /\AOriginal Sender:[ \t]+[<](.+)[>]\z/ ) {
# Original Sender: <originalsender@example.com>
# Use this line instead of "From" header of the original
# message.
push @$rfc822list, 'From: '.$1;
} elsif( $e =~ /\ASender-MTA:[ \t]+[<](.+)[>]\z/ ) {
# Sender-MTA: <10.11.12.13>
$v->{'lhost'} = $1;
} elsif( $e =~ /\AReporting-MTA:[ \t]+[<](.+)[>]\z/ ) {
# Reporting-MTA: <relay.xxxxxxxxxxxx.com>
$v->{'rhost'} = $1;
}
}
}
} # End of if: rfc822
}
return undef unless $recipients;
for my $e ( @$dscontents ) {
$e->{'diagnosis'} = Sisimai::String->sweep($e->{'diagnosis'});
$e->{'agent'} = __PACKAGE__->smtpagent;
}
$rfc822part = Sisimai::RFC5322->weedout($rfc822list);
return { 'ds' => $dscontents, 'rfc822' => $$rfc822part };
}
1;
__END__
=encoding utf-8
=head1 NAME
Sisimai::Bite::Email::MailMarshalSMTP - bounce mail parser class for
C<Trustwave Secure Email Gateway>.
=head1 SYNOPSIS
use Sisimai::Bite::Email::MailMarshalSMTP;
=head1 DESCRIPTION
Sisimai::Bite::Email::MailMarshalSMTP parses a bounce email which created by
C<Trustwave Secure Email Gateway>: formerly MailMarshal SMTP.
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::MailMarshalSMTP->description;
=head2 C<B<smtpagent()>>
C<smtpagent()> returns MTA name.
print Sisimai::Bite::Email::MailMarshalSMTP->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