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package Sisimai::RFC3834; |
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use feature ':5.10'; |
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use strict; |
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use warnings; |
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5939
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# http://tools.ietf.org/html/rfc3834 |
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sub description { 'Detector for auto replied message' } |
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sub make { |
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# Detect auto reply message as RFC3834 |
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# @param [Hash] mhead Message headers of a bounce email |
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# @param [String] mbody Message body of a bounce email |
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# @return [Hash] Bounce data list and message/rfc822 part |
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# @return [Undef] failed to parse or the arguments are missing |
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# @since v4.1.28 |
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my $class = shift; |
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my $mhead = shift // return undef; |
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my $mbody = shift // return undef; |
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my $leave = 0; |
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my $match = 0; |
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return undef unless keys %$mhead; |
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return undef unless ref $mbody eq 'SCALAR'; |
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my $markingsof = { 'boundary' => qr/\A__SISIMAI_PSEUDO_BOUNDARY__\z/ }; |
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state $autoreply1 = { |
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# http://www.iana.org/assignments/auto-submitted-keywords/auto-submitted-keywords.xhtml |
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'auto-submitted' => qr/\Aauto-(?:generated|replied|notified)/, |
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# https://msdn.microsoft.com/en-us/library/ee219609(v=exchg.80).aspx |
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'x-auto-response-suppress' => qr/(?:oof|autoreply)/, |
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'x-apple-action' => qr/\Avacation\z/, |
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'precedence' => qr/\Aauto_reply\z/, |
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'subject' => qr/\A(?> |
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auto: |
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|auto[ ]response: |
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|automatic[ ]reply: |
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|out[ ]of[ ](?:the[ ])*office: |
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) |
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/x, |
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}; |
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state $excludings = { |
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'subject' => qr{(?: |
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security[ ]information[ ]for # sudo |
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|mail[ ]failure[ ][-] # Exim |
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) |
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}x, |
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'from' => qr/(?:root|postmaster|mailer-daemon)[@]/, |
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'to' => qr/root[@]/, |
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}; |
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state $subjectset = qr{\A(?> |
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(?:.+?)?re: |
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|auto(?:[ ]response): |
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|automatic[ ]reply: |
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|out[ ]of[ ]office: |
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) |
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[ ]*(.+)\z |
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}x; |
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DETECT_EXCLUSION_MESSAGE: for my $e ( keys %$excludings ) { |
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# Exclude message from root@ |
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next unless exists $mhead->{ $e }; |
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next unless defined $mhead->{ $e }; |
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next unless lc($mhead->{ $e }) =~ $excludings->{ $e }; |
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$leave = 1; |
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last; |
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} |
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return undef if $leave; |
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DETECT_AUTO_REPLY_MESSAGE: for my $e ( keys %$autoreply1 ) { |
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# RFC3834 Auto-Submitted and other headers |
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next unless exists $mhead->{ $e }; |
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next unless defined $mhead->{ $e }; |
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next unless lc($mhead->{ $e }) =~ $autoreply1->{ $e }; |
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$match++; |
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last; |
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} |
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return undef unless $match; |
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require Sisimai::Lhost; |
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my $dscontents = [Sisimai::Lhost->DELIVERYSTATUS]; |
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my $recipients = 0; # (Integer) The number of 'Final-Recipient' header |
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my $maxmsgline = 5; # (Integer) Max message length(lines) |
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my $haveloaded = 0; # (Integer) The number of lines loaded from message body |
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my $blanklines = 0; # (Integer) Counter for countinuous blank lines |
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my $countuntil = 1; # (Integer) Maximun value of blank lines in the body part |
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my $v = $dscontents->[-1]; |
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RECIPIENT_ADDRESS: { |
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# Try to get the address of the recipient |
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for my $e ('from', 'return-path') { |
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# Get the recipient address |
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next unless exists $mhead->{ $e }; |
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next unless defined $mhead->{ $e }; |
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$v->{'recipient'} = $mhead->{ $e }; |
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last; |
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} |
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if( $v->{'recipient'} ) { |
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# Clean-up the recipient address |
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$v->{'recipient'} = Sisimai::Address->s3s4($v->{'recipient'}); |
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$recipients++; |
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} |
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} |
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return undef unless $recipients; |
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if( $mhead->{'content-type'} ) { |
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# Get the boundary string and set regular expression for matching with |
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# the boundary string. |
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my $b0 = Sisimai::MIME->boundary($mhead->{'content-type'}, 0); |
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$markingsof->{'boundary'} = qr/\A\Q$b0\E\z/ if length $b0; |
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} |
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BODY_PARSER: { |
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# Get vacation message |
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for my $e ( split("\n", $$mbody) ) { |
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# Read the first 5 lines except a blank line |
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$countuntil += 1 if $e =~ $markingsof->{'boundary'}; |
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unless( length $e ) { |
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# Check a blank line |
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last if ++$blanklines > $countuntil; |
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next; |
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} |
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next unless rindex($e, ' ') > -1; |
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next if index($e, 'Content-Type') == 0; |
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next if index($e, 'Content-Transfer') == 0; |
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$v->{'diagnosis'} .= $e.' '; |
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$haveloaded++; |
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last if $haveloaded >= $maxmsgline; |
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} |
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$v->{'diagnosis'} ||= $mhead->{'subject'}; |
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} |
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$v->{'diagnosis'} = Sisimai::String->sweep($v->{'diagnosis'}); |
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$v->{'reason'} = 'vacation'; |
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$v->{'date'} = $mhead->{'date'}; |
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$v->{'status'} = ''; |
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# Get the Subject header from the original message |
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my $rfc822part = lc($mhead->{'subject'}) =~ $subjectset ? 'Subject: '.$1."\n" : ''; |
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return { 'ds' => $dscontents, 'rfc822' => $rfc822part }; |
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} |
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1; |
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__END__ |