#!/bin/sh
# postfix is a Mail Transport agent
# Eisfair-2 version

PATH=/bin:/usr/bin:/sbin:/usr/sbin
TZ=
unset TZ
check_program_pid_file='/usr/local/postfix/master'
MILTERS=""

. /lib/lsb/init-functions

### -------------------------------------------------------------------------
### start/stop message color output
### -------------------------------------------------------------------------
COLOR_RED='\033[1;31m'
COLOR_NRM='\033[0;39m'

log_end_msg_new ()
{
    echo -en "\\033[300C\\033[8D"
    if [ "$1" -eq 0 ]
    then
        echo " [ OK ]"
    else
        echo -e " [${COLOR_RED}fail${COLOR_NRM}]"
    fi
}

### -------------------------------------------------------------------------
### check if program running
### -------------------------------------------------------------------------
get_program_pid()
{
    if [ -n "`ps -ef | grep -v grep | grep "$check_program_pid_file" 2>/dev/null`" ]
    then
        echo "."
    fi 
}

### -------------------------------------------------------------------------
### update chroot
### -------------------------------------------------------------------------
copy() {
    file=`basename ${1}`
    cp -dpf ${1} ${2}/${file}
}

update_chroot()
{
    # setup the empty chroot directory structure
    rm -f /var/spool/postfix/etc/*
    rm -f /var/spool/postfix/lib/*

    chmod 0777 /var/spool/postfix/var/run
    chmod 0777 /var/spool/postfix/var/run/milter
    for i in /etc/localtime /usr/lib/zoneinfo/localtime \
	         /usr/share/zoneinfo/localtime \
             /etc/host.conf /etc/resolv.conf /etc/nsswitch.conf \
             /etc/hosts /etc/services
    do
        [ -e ${i} ] && copy ${i} `dirname /var/spool/postfix${i}`
    done
  
    # determine glibc version
    LIBCVER=`ls -l /lib/libc.so.6* | sed "s/.*libc-\(.*\).so$/\1/g"`
    # copy the relevant parts of glibc into the chroot
    for i in compat dns files hesoid ldap nis nisplus winbind wins
    do
        [ -e /lib/libnss_${i}-${LIBCVER}.so ] && copy /lib/libnss_${i}-${LIBCVER}.so /var/spool/postfix/lib/
        [ -e /lib/libnss_${i}.so ] && copy /lib/libnss_${i}.so /var/spool/postfix/lib/
        [ -e /lib/libnss_${i}.so.2 ] && copy /lib/libnss_${i}.so.2 /var/spool/postfix/lib/
    done
    [ -e /lib/libnss_db.so.2.0.0 ] && copy /lib/libnss_db.so.2.0.0 /var/spool/postfix/lib/
    [ -e /lib/libresolv-${LIBCVER}.so ] && copy /lib/libresolv-${LIBCVER}.so /var/spool/postfix/lib/
    [ -e /lib/libresolv-${LIBCVER}.so.2 ] && copy /lib/libresolv-${LIBCVER}.so.2 /var/spool/postfix/lib/
    ldconfig -n /var/spool/postfix/lib # not convinced this is necessary
    if [ -e /var/run/mysql ]
    then
        if [ -z "`mount | grep '/var/spool/postfix/var/run/mysql'`" ]
        then
            mount --rbind /var/run/mysql /var/spool/postfix/var/run/mysql 
        fi
    fi
    if [ -z "`mount | grep '/var/spool/postfix/var/run/milter'`" ]
    then
        mount --rbind /var/run/milter /var/spool/postfix/var/run/milter 
    fi
    # connect milter if avaiable
    if [ -e /var/run/milter/milter-greylist.sock ]
    then
        MILTERS="unix:/var/run/milter/milter-greylist.sock, "
    fi
    MILTERS="${MILTERS} unix:/var/run/milter/smc-milter.sock"
    postconf -e "smtpd_milters = $MILTERS"
}





### -------------------------------------------------------------------------
### main
### -------------------------------------------------------------------------
case "$1" in
    start)
        if [ -e /etc/postfix/dracd.internal ]
        then
            [ -e /var/run/dracd.pid ] || /usr/local/postfix/dracd -i -e 30 /etc/postfix/dracd.db
        fi
        if [ -z "$(get_program_pid)" ] 
        then
            log_daemon_msg "Starting Mail Transport Agent" "postfix"
            update_chroot
            /usr/sbin/postfix start 2>/dev/null
            for count in 1 2 3 4 
            do
                if [ -n "$(get_program_pid)" ]  
                then
                    break
                fi 
                echo -n "."
                sleep 1
            done 
            if [ ${count} -eq 4 ]
            then
                log_end_msg 1
            else
                log_end_msg 0
            fi
        fi
        ;;
    stop)
        if [ -n "$(get_program_pid)" ] 
        then
            log_daemon_msg "Stopping Mail Transport Agent" "postfix"
            /usr/sbin/postfix stop 2>/dev/null
            for count in 1 2 3 4
            do
                if [ -z "$(get_program_pid)" ]  
                then
                    break
                fi 
                echo -n "."
                sleep 1
            done 
            killall -wq master
            log_end_msg 0
        fi
        [ -e /var/run/dracd.pid ] && killall dracd >/dev/null 2>&1
        ;;

    restart)
        $0 stop
        $0 start
        ;;
    
    force-reload|reload)
	    log_daemon_msg "Reloading Postfix configuration"
	    if /usr/sbin/postfix reload >/dev/null 2>&1
        then
	        log_end_msg 0
	    else
	        log_end_msg 1
	    fi
        ;;

    status)
        echo -n " * Postfix mail     "
        if [ -z "$(get_program_pid)" ] 
        then
            log_end_msg_new 1
        else
            log_end_msg_new 0
        fi
        ;;

    flush|check|abort)
	    /usr/sbin/postfix $1
        ;;

    *)
	    log_action_msg "Usage: /etc/init.d/postfix {start|stop|status|restart|reload|flush|check|abort|force-reload}"
	    exit 1
        ;;
esac

exit 0