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#!/bin/sh -e
#-----------------------------------------------------------------------------
#
# Update TCPD environment (TCP Wrappers) for sendmail
#
# Copyright (c) 2001-2001 Richard Nelson. All Rights Reserved.
# Time-stamp: <2001/01/17 10:00:00 cowboy>
#
# Notes (to all):
#
# Notes (to self):
#
#-----------------------------------------------------------------------------
set -e
#------------------------------------------------------------------------------
# Check to see if sendmail is mentioned in /etc/hosts.allow
# Note: This check is far from perfect - it requires sendmail and : be
# on the same line. If you've got a better approach, I'd love to
# see it (Maybe awk/perl)!
if grep -qEe "^[^#:]*sendmail[^:]*[:]" /etc/hosts.allow 2>/dev/null; then
need_tcpd=0
else
need_tcpd=1
fi
if [ ! -e /etc/hosts.allow ]; then
need_tcpd=0
fi
if [ $need_tcpd -eq 1 ]; then
cat <<-EOT
Updating /etc/hosts.allow, adding "sendmail: all".
Please edit /etc/hosts.allow and check the rules location to
make sure your security measures have not been overridden -
it is common to move the sendmail:all line to the *end* of
the file, so your more selective rules take precedence.
EOT
echo "sendmail: all" | cat - /etc/hosts.allow >/etc/hosts.allow.new
mv -f /etc/hosts.allow.new /etc/hosts.allow
if [ -e /etc/init.d/netbase ]; then
/etc/init.d/netbase reload >/dev/null
elif [ -e /etc/init.d/inetd ]; then
/etc/init.d/inetd reload >/dev/null
fi
fi
exit 0
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