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