/* This file is part of Mailfromd                                   -*- mfl -*-
   Copyright (C) 2006-2020 Sergey Poznyakoff

   Mailfromd is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   Mailfromd is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with Mailfromd.  If not, see <http://www.gnu.org/licenses/>. */

require status
require match_cidr

set network "127.0.0.0/8"

func safe_cidr(string ip, string cidr)
  returns number
do
  catch e_invip
  do
    echo "safe_cidr: invalid IP address"
    return 0
  done
  return match_cidr(ip, cidr)
done

prog envfrom
do
  catch e_invip or e_invcidr
  do
    tempfail 450 "Caught condition $1"
  done
  if safe_cidr($s, network)
    accept
  else
    reject
  fi
done