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Port to CONTINUATIONS style

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git-svn-id: https://svn.perl.org/qpsmtpd/branches/high_perf@449 958fd67b-6ff1-0310-b445-bb7760255be9
This commit is contained in:
Matt Sergeant 2005-06-23 12:27:38 +00:00
parent 6047477c11
commit a4a62af847
1 changed files with 31 additions and 17 deletions
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60
plugins/require_resolvable_fromhost
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@ -11,9 +11,9 @@ sub register {
sub mail_handler {
my ($self, $transaction, $sender) = @_;
$sender->format ne "<>" and $self->check_dns($sender->host);
return DECLINED;
$self->transaction->notes('resolvable', 1);
return DECLINED if $sender->format eq "<>";
return $self->check_dns($sender->host);
}
@ -21,42 +21,56 @@ sub check_dns {
my ($self, $host) = @_;
# for stuff where we can't even parse a hostname out of the address
return unless $host;
return DECLINED unless $host;
return $self->transaction->notes('resolvable', 1)
if $host =~ m/^\[(\d{1,3}\.){3}\d{1,3}\]$/;
Danga::DNS->new(
callback => sub { $self->dns_result(@_) },
host => $host,
type => "MX",
client => $self->qp->input_sock,
);
Danga::DNS->new(
callback => sub { $self->dns_result(@_) },
host => $host,
client => $self->qp->input_sock,
);
if( $host =~ m/^\[(\d{1,3}\.){3}\d{1,3}\]$/ ) {
$self->transaction->notes('resolvable', 1);
return DECLINED;
}
$self->transaction->notes('pending_dns_queries', 2);
my $qp = $self->qp;
$self->log(LOGDEBUG, "Checking $host for MX record in the background");
Danga::DNS->new(
callback => sub { dns_result($qp, @_) },
host => $host,
type => "MX",
client => $qp->input_sock,
);
$self->log(LOGDEBUG, "Checking $host for A record in the background");
Danga::DNS->new(
callback => sub { dns_result($qp, @_) },
host => $host,
client => $qp->input_sock,
);
return CONTINUATION;
}
sub dns_result {
my ($self, $result, $query) = @_;
my ($qp, $result, $query) = @_;
my $pending = $qp->transaction->notes('pending_dns_queries');
$qp->transaction->notes('pending_dns_queries', --$pending);
if ($result =~ /^[A-Z]+$/) {
# probably an error
$self->log(LOGDEBUG, "DNS error: $result looking up $query");
return;
$qp->log(LOGDEBUG, "DNS error: $result looking up $query");
} else {
$qp->transaction->notes('resolvable', 1);
$qp->log(LOGDEBUG, "DNS lookup $query returned: $result");
}
$self->log(LOGDEBUG, "DNS lookup $query returned: $result");
$self->transaction->notes('resolvable', 1);
$qp->finish_continuation unless $pending;
}
sub rcpt_handler {
my ($self, $transaction) = @_;
if (!$transaction->notes('resolvable')) {
my $sender = $transaction->sender;
$self->log(LOGDEBUG, "Could not resolve " .$sender->host) if $sender->host;
return (DENYSOFT,
($sender->host
? "Could not resolve ". $sender->host