72 lines
1.6 KiB
Perl
72 lines
1.6 KiB
Perl
#!perl -w
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=head1 NAME
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parse_addr_withhelo
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=head1 SYNOPSIS
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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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load this plugin to enforce, else the default EHLO parsing with
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parameters is done.
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=cut
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use strict;
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use warnings;
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use Qpsmtpd::Constants;
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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 ($cmd eq 'mail') {
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if ($line !~ s/^from:\s*//i) {
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return DENY, "Syntax error in command";
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};
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}
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else { # cmd eq 'rcpt'
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return DENY, "Syntax error in command" if $line !~ s/^to:\s*//i;
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}
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if ($line =~ s/^(<.*>)\s*//) {
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return DENY, "No parameters allowed in " . uc($cmd) if $line =~ /^\S/;
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return OK, $1; # $1 is captured address
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}
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## now, no <> are given
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$line =~ s/\s*$//;
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if ($line =~ /\@/) {
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if ($line =~ /\@\S+\s+\S/) {
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return DENY, "No parameters allowed in " . uc($cmd);
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};
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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, '<>' if !$line; # 'MAIL FROM:' -> 'MAIL FROM:<>'
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return DENY, "Could not parse your MAIL FROM command";
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}
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if ($line !~ /^(postmaster|abuse)$/i) {
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return DENY, "Could not parse your RCPT TO command";
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};
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}
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