#!/bin/sh -
# A sample "POP before SMTP"-enabler script for tcp_wrappers
# This script should be installed in /usr/local/etc
# If you are thinking of using this script on heavily loaded host,
# you had better to choose tcpserver instead of tcp_wrappers.
#

# for debug
# (env;echo "1=$1") | Mail -s pop3access yuuji

# pop3-{age,update,record} for tcp_wrappers ends here
# The following section is the sample routine for tcpserver(ucsp-tcp)
# If you use tcpserver, replace the above section after "case $0...esac"
# by the following section.
# Sample code was contributed by pirozeau(pirozeau@banana-fish.com).

#TCPREMOTEIP=${TCPREMOTEIP:-undefined}
TCPREMOTEIP=${REMOTE_HOST}
RELAYCLIENT=${RELAYCLIENT:-$TCPREMOTEIP}
ALLOW=/usr/local/etc/smtprule
ALLOWTMP=/usr/local/etc/atmp
case $0 in
  *record)
        echo "$RELAYCLIENT:allow,RELAYCLIENT=\"\"" >> $ALLOWTMP.1
        ;;
  *age)
        rm -f $ALLOWTMP.2
        [ -f $ALLOWTMP.1 ] && mv -f $ALLOWTMP.1 $ALLOWTMP.2
        ;;
  *)
        # else generate master tcprule file
        ;;
esac
touch $ALLOWTMP.1 $ALLOWTMP.2
(cat $ALLOWTMP.[12] | sort -u; cat ${ALLOW}) | /usr/local/bin/tcprules ${ALLOW}.cdb ${ALLOW}.tmp