#!/sbin/sh
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
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# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
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# Copyright (c) 1991, 2013, Oracle and/or its affiliates. All rights reserved.

. /lib/svc/share/smf_include.sh
. /lib/svc/share/sendmail_include.sh

ERRMSG1='WARNING: /var/mail is NFS-mounted without setting actimeo=0,'
ERRMSG2='this can cause mailbox locking and access problems.'
SERVER_PID_FILE="/var/run/sendmail.pid"
ALIASES_FILE="/etc/mail/aliases"
SENDMAIL_CF="/etc/mail/sendmail.cf"
MAKEMAP="/usr/sbin/makemap"

case "$1" in 
'refresh')
        [ -f $SERVER_PID_FILE ] && kill -1 `head -1 $SERVER_PID_FILE`
        ;;

'start')
	exist_or_exit $SENDMAIL
	if [ ! -d /var/spool/mqueue ]; then
		/usr/bin/mkdir -m 0750 /var/spool/mqueue
		/usr/bin/chown root:bin /var/spool/mqueue
	fi
	if [ ! -d /var/mail/:saved ]; then
		/usr/bin/mkdir -m 0775 /var/mail/:saved
		/usr/bin/chown root:mail /var/mail/:saved
	fi
	dbvers=`/usr/bin/svcprop -c -p config/db_version $SMF_FMRI 2>/dev/null`
	if [ $? -ne 0 -o "$dbvers" != "5" ]; then
		# Need to upgrade Berkeley DB version
		# Part 1: blow away aliases DB files; we will recreate them
		# just below.
		# Part 2: keyed maps are handled further below.
		/usr/bin/rm -f $ALIASES_FILE.db $ALIASES_FILE.dir \
		    $ALIASES_FILE.pag
		db_version_upgrade_needed=true
	fi
	if [ ! -f $ALIASES_FILE.db ] && [ ! -f $ALIASES_FILE.dir ] \
	    && [ ! -f $ALIASES_FILE.pag ]; then
		/usr/sbin/newaliases
	fi
	MODE="-bd"
	[ -f $DEFAULT_FILE ] && . $DEFAULT_FILE
	#
	# * MODE should be "-bd" or null (MODE= or MODE="") or
	#   left alone.  Anything else and you're on your own.
	# * QUEUEOPTION should be "p" or null (as above).
	# * QUEUEINTERVAL should be set to some legal value;
	#   sanity checks are done below.
	# * OPTIONS are catch-alls; set with care.
	#
	if [ -n "$QUEUEOPTION" -a "$QUEUEOPTION" != "p" ]; then
		QUEUEOPTION=""
	fi
	if [ -z "$QUEUEOPTION" -o -n "$QUEUEINTERVAL" ]; then
		check_queue_interval_syntax $QUEUEINTERVAL
		QUEUEINTERVAL=$answer
	fi

	local=`/usr/bin/svcprop -p config/local_only $SMF_FMRI 2>/dev/null`
	if [ $? -eq 0 -a "$local" = "true" ]; then
		MODE="-bl"
	fi
	sendmail_path=`svcprop -p config/path_to_sendmail_mc $SMF_FMRI \
	    2>/dev/null`
	if [ $? -eq 0 -a -n "$sendmail_path" ]; then
		turn_m4_crank "$SENDMAIL_CF" "$sendmail_path"
	fi
	exist_or_exit "$SENDMAIL_CF"
	if [ -n "$db_version_upgrade_needed" ]; then
		# Find the Keyed map lines, extract the arguments, run
		# makemap to create the maps with the upgraded DB version.
		/usr/bin/nawk '
		    $1 ~ /^K/ && $2 ~ /^(hash|btree|dbm)$/ {
			print $2, $NF
		    } ' "$SENDMAIL_CF" |
		while read dbtyp file; do
			if [ "$dbtyp" == "dbm" ]; then
				/usr/bin/rm -f $file.dir $file.pag
			else
				/usr/bin/rm -f $file.db
			fi
			echo "Executing \"$MAKEMAP $dbtyp $file < $file\"."
			$MAKEMAP $dbtyp $file < $file
			result=$?
			if [ $result -ne 0 ]; then
				echo "Failed to update keyed map files."
				echo "$MAKEMAP failed with error $result."
				echo "Run makemap manually."
				exit $SMF_EXIT_ERR_CONFIG
			fi
		done

		# Finally, update the service property.
		/usr/sbin/svccfg -s $SMF_FMRI setprop config/db_version=5

		# We refresh the service to get the above property setting
		# into the running snapshot.  This will result in SMF
		# invoking this script with $1 set to "refresh" immediately
		# upon completion of this "start" invocation.  But since
		# sendmail sets up its SIGHUP handler before it writes
		# its PID file, this should be OK: either the PID file
		# will not yet exist, in which case, the "refresh" will
		# do nothing (beyond getting the property setting into the
		# running snapshot), or the PID file will exist, in which
		# case the SIGHUP handler will have already been set up,
		# and sendmail will catch the SIGHUP and re-exec itself.
		/usr/sbin/svcadm refresh $SMF_FMRI
	fi

	$SENDMAIL $MODE -q$QUEUEOPTION$QUEUEINTERVAL $OPTIONS &

	#
	# ETRN_HOSTS should be of the form
	# "s1:c1.1,c1.2        s2:c2.1 s3:c3.1,c3.2,c3.3"
	# i.e., white-space separated groups of server:client where
	# client can be one or more comma-separated names; N.B. that
	# the :client part is optional; see etrn(1M) for details.
	# server is the name of the server to prod; a mail queue run
	# is requested for each client name.  This is comparable to
	# running "/usr/lib/sendmail -qRclient" on the host server.
	#
	# See RFC 1985 for more information.
	#
	for i in $ETRN_HOSTS; do
		SERVER=`echo $i | /usr/bin/sed -e 's/:.*$//'`
		CLIENTS=`echo $i | /usr/bin/sed -n -e 's/,/ /g' \
		    -e '/:/s/^.*://p'`
		/usr/sbin/etrn -b $SERVER $CLIENTS >/dev/null 2>&1 &
	done

	if /usr/bin/nawk 'BEGIN{s = 1}
	    $2 == "/var/mail" && $3 == "nfs" && $4 !~ /actimeo=0/ &&
	    $4 !~ /noac/{s = 0} END{exit s}' /etc/mnttab; then

		/usr/bin/logger -p mail.crit "$ERRMSG1"
		/usr/bin/logger -p mail.crit "$ERRMSG2"
	fi
	;;

'stop')
	[ -f $SERVER_PID_FILE ] && check_and_kill $SERVER_PID_FILE
	# Need to kill the entire service contract to kill all sendmail related
	# processes
	smf_kill_contract $2 TERM 1 30
	ret=$?
	[ $ret -eq 1 ] && exit 1

	# Since sendmail spawns user processes out of .forward files, it is
	# possible that some of these are not responding to TERM.  If the
	# contract did not empty after TERM, move on to KILL.
	if [ $ret -eq 2 ] ; then
		smf_kill_contract $2 KILL 1
	fi
	;;

*)
	echo "Usage: $0 { start | stop | refresh }"
	exit 1
	;;
esac
exit 0