52f38f9459
git-svn-id: https://svn.perl.org/qpsmtpd/branches/0.3x@656 958fd67b-6ff1-0310-b445-bb7760255be9
117 lines
2.7 KiB
Plaintext
117 lines
2.7 KiB
Plaintext
sub init {
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my ($self, $qp, %args) = @_;
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foreach my $key ( %args ) {
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$self->{$key} = $args{$key};
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}
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}
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sub hook_data_post {
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use Mail::DomainKeys::Message;
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use Mail::DomainKeys::Policy;
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my ($self, $transaction) = @_;
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# if this isn't signed, just move along
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return DECLINED
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unless $transaction->header->get('DomainKey-Signature');
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my @body;
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$transaction->body_resetpos;
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$transaction->body_getline; # \r\n seperator is NOT part of the body
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while (my $line = $transaction->body_getline) {
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push @body, $line;
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}
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my $message = load Mail::DomainKeys::Message(
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HeadString => $transaction->header->as_string,
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BodyReference => \@body) or
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$self->log(LOGWARN, "unable to load message"),
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return DECLINED;
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# no sender domain means no verification
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$message->senderdomain or
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return DECLINED;
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my $status;
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# key testing
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if ( $message->testing ) {
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# Don't do anything else
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$status = "testing";
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}
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elsif ( $message->signed and $message->verify ) {
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# verified: add good header
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$status = $message->signature->status;
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}
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else { # not signed or not verified
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my $policy = fetch Mail::DomainKeys::Policy(
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Protocol => "dns",
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Domain => $message->senderdomain
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);
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if ( $policy ) {
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if ( $policy->testing ) {
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# Don't do anything else
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$status = "testing";
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}
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elsif ( $policy->signall ) {
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# if policy requires all mail to be signed
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$status = undef;
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}
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else { # $policy->signsome
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# not signed and domain doesn't sign all
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$status = "no signature";
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}
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}
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else {
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$status = $message->signed ? "non-participant" : "no signature";
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}
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}
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if ( defined $status ) {
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$transaction->header->replace("DomainKey-Status", $status);
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$self->log(LOGWARN, "DomainKeys-Status: $status");
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return DECLINED;
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}
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else {
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$self->log(LOGERROR, "DomainKeys signature failed to verify");
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if ( $self->{warn_only} ) {
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return DECLINED;
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}
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else {
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return (DENY, "DomainKeys signature failed to verify");
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}
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}
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}
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=cut
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=head1 NAME
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domainkeys: validate a DomainKeys signature on an incoming mail
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=head1 SYNOPSIS
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domainkeys [warn_only 1]
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Performs a DomainKeys validation on the message. Takes a single
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configuration
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warn_only 1
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which means that messages which are not correctly signed (i.e. signed but
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modified or deliberately forged) will not be DENY'd, but an error will still
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be issued to the logfile.
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=head1 COPYRIGHT
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Copyright (C) 2005-2006 John Peacock.
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Portions Copyright (C) 2004 Anthony D. Urso. All rights reserved. This
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program is free software; you can redistribute it and/or modify it under
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the same terms as Perl itself.
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