#!/bin/bash

. /usr/share/debconf/confmodule

set -e

package_name()
{
    echo $(basename $0 .postinst)
}

# element() is a helper function for file-rc:
element() {
    local element list IFS

    element="$1"

    [ "$2" = "in" ] && shift
    list="$2"
    [ "$list" = "-" ] && return 1
    [ "$list" = "*" ] && return 0

    IFS=","
    set -- $list
    case $element in
	"$1"|"$2"|"$3"|"$4"|"$5"|"$6"|"$7"|"$8"|"$9")
	    return 0
    esac
    return 1
}

# filerc (runlevel, service) returns /etc/init.d/service, if service is
# running in $runlevel:
filerc() {
    local runlevel basename
    runlevel=$1
    basename=$2
    while read LINE
    do
	case $LINE in
	    \#*|"") continue
	esac

	set -- $LINE
	SORT_NO="$1"; STOP="$2"; START="$3"; CMD="$4"
	[ "$CMD" = "/etc/init.d/$basename" ] || continue

	if element "$runlevel" in "$START" || element "S" in "$START"
	then
	    echo "/etc/init.d/$basename"
	    return 0
	fi
    done < /etc/runlevel.conf
    echo ""
}

if [ "$1" = "configure" ]
then
    if [ ! -z "$2" ]; then
	if dpkg --compare-versions "$2" lt 0.9.8g-9; then
	    db_version 2.0

	    echo -n "Checking for services that may need to be restarted..."

	    check="sendmail openssh-server"
	    check="$check apache2-common ssh-nonfree exim4"
	    check="$check apache-ssl libapache-mod-ssl openvpn spamassassin"
	    check="$check courier-imap-ssl courier-mta-ssl courier-pop-ssl"
	    check="$check postfix cyrus21-imapd cyrus21-pop3d"
	    check="$check postgresql-7.4 postgresql-8.0 postgresql-8.1"
	    check="$check postgresql-8.2"
	    check="$check racoon dovecot-common bind9"
	    check="$check ntp openntpd clamcour nagios-nrpe-server"
	    check="$check clamav-freshclam clamav-daemon"
	    check="$check fetchmail ftpd-ssl slapd"
	    check="$check proftpd proftpd-ldap proftpd-mysql proftpd-pgsql"
	    check="$check partimage-server conserver-server tor"
	    check="$check stunnel4"
	    # Only get the ones that are installed, and configured
	    check=$(dpkg -s $check 2> /dev/null | egrep '^Package:|^Status:' | awk '{if ($1 ~ /^Package:/) { package=$2 } else if ($0 ~ /^Status: .* installed$/) { print package }}')
	    # apache2 ships its init script in apache2-common, but the
	    # script is apache2
	    check=$(echo $check | sed 's/apache2-common/apache2/g')
	    # For mod-ssl apache has to be restarted
	    check=$(echo $check | sed 's/libapache-mod-ssl/apache/g')
	    # The name of proftpd-{ldap,mysql,pgsql} init script is
	    # same as "proftpd".
	    check=$(echo $check | sed 's/proftpd-.*/proftpd/g')
            # dovecot-common ships its init script, but the
	    # script name is dovecot for dovecot-{imapd,pop3d}.
	    check=$(echo $check | sed 's/dovecot-common/dovecot/g')
	    # openssh-server's init script it called ssh
	    check=$(echo $check | sed 's/openssh-server/ssh/g')
	    echo "done."

	    echo "Checking init scripts..."
	    for service in $check; do
		if [ -x "`which invoke-rc.d 2>/dev/null`" ]; then
		   idl=$(ls /etc/init.d/${service} 2> /dev/null | head -n 1)
		   if [ -n "$idl" ] && [ -x $idl ]; then
			services="$service $services"
		   else
			echo "WARNING: init script for $service not found."
		   fi
		else
		    if [ -f /usr/share/file-rc/rc ] || [ -f /usr/lib/file-rc/rc ] && [ -f /etc/runlevel.conf ]; then

			idl=$(filerc $rl $service)
		    else
			idl=$(ls /etc/rc${rl}.d/S??${service} 2> /dev/null | head -n 1)
		    fi
		    if [ -n "$idl" ] && [ -x $idl ]; then
		        services="$service $services"
		    fi
		fi
	    done
	    if [ -n "$services" ]; then
		db_reset libssl0.9.8/restart-services
		db_set libssl0.9.8/restart-services "$services"
		db_input critical libssl0.9.8/restart-services || true
		db_go || true
		db_get libssl0.9.8/restart-services
		
		if [ "x$RET" != "x" ]
		then
		    services=$RET
		    answer=yes
		else
		    answer=no
		fi
		echo
		if [ "$answer" = yes ] && [ "$services" != "" ]; then
		    echo "Restarting services possibly affected by the upgrade:"
		    failed=""
		    rl=$(runlevel | sed 's/.*\ //')
		    for service in $services; do
			if [ -x "`which invoke-rc.d 2>/dev/null`" ]; then
			    idl="invoke-rc.d ${service}"
			elif [ -f /usr/share/file-rc/rc ] || [ -f /usr/lib/file-rc/rc ] && [ -f /etc/runlevel.conf ]; then
			    idl=$(filerc $rl $service)
			else
			    idl=$(ls /etc/rc${rl}.d/S??${service} 2> /dev/null | head -n 1)
			fi

			if ! $idl restart; then
			    failed="$service $failed"
			fi
		    done
		    echo
		    if [ -n "$failed" ]; then
			db_subst libssl0.9.8/restart-failed services "$failed"
			db_input critical libssl0.9.8/restart-failed || true
			db_go || true
		    else
			echo "Services restarted successfully."
		    fi
		    echo
		fi
	    else
		echo "Nothing to restart."
	    fi
	    # Shut down the frontend, to make sure none of the
	    # restarted services keep a connection open to it
	    db_stop
	fi # end upgrading and $2 lt 0.9.8c-2
    fi # Upgrading
fi

#DEBHELPER#