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#!perl -w
=head1 NAME
parse_addr_withhelo
=head1 SYNOPSIS
strict RFC 821 forbids parameters after the
MAIL FROM:<user@example.net>
and
RCPT TO:<someone@example.com>
load this plugin to enforce, else the default EHLO parsing with
parameters is done.
=cut
use strict;
use warnings;
use Qpsmtpd::Constants;
sub hook_mail_parse {
my $self = shift;
return (OK, \&_parse) if ($self->qp->connection->hello eq 'helo');
return (DECLINED);
}
sub hook_rcpt_parse {
my $self = shift;
return (OK, \&_parse) if ($self->qp->connection->hello eq 'helo');
return (DECLINED);
}
sub _parse {
my ($self, $cmd, $line) = @_;
$self->log(LOGDEBUG, "_parse() cmd=[$cmd], line=[$line]");
if ($cmd eq 'mail') {
return (DENY, "Syntax error in command")
unless ($line =~ s/^from:\s*//i);
}
else { # cmd eq 'rcpt'
return (DENY, "Syntax error in command")
unless ($line =~ s/^to:\s*//i);
}
if ($line =~ s/^(<.*>)\s*//) {
my $addr = $1;
return (DENY, "No parameters allowed in " . uc($cmd))
if ($line =~ /^\S/);
return (OK, $addr, ());
}
## now, no <> are given
$line =~ s/\s*$//;
if ($line =~ /\@/) {
return (DENY, "No parameters allowed in " . uc($cmd))
if ($line =~ /\@\S+\s+\S/);
return (OK, $line, ());
}
if ($cmd eq "mail") {
return (OK, "<>") unless $line; # 'MAIL FROM:' -> 'MAIL FROM:<>'
return (DENY, "Could not parse your MAIL FROM command");
}
else {
return (DENY, "Could not parse your RCPT TO command")
unless $line =~ /^(postmaster|abuse)$/i;
}
}
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