xmail 1.27-1.2 / postinst

#! /bin/bash -e
# postinst script for xmail

# Use debconf.
. /usr/share/debconf/confmodule

      
case "$1" in
    configure)

    #this is used to see if the user is running dpkg-reconfigure
    CUR_VER=`cat /var/lib/xmail/curr_ver`

    #these configuration changes don't require xmail to run.

    if [ -z "$2" ]; then
	#we are installing for the first time
	cp /usr/share/xmail/sample/*.tab /etc/xmail
	cp /usr/share/xmail/sample/dnsroots /etc/xmail
        #make links to xmail config files
        ln -s /etc/xmail/*.tab /var/lib/xmail/
        ln -s /etc/xmail/dnsroots /var/lib/xmail
        chmod 711 /var/lib/xmail
        chmod 711 /var/spool/xmail
        chmod 711 /var/spool/xmail/spool
        chmod 770       /var/spool/xmail/spool/local
        chown root:mail /var/spool/xmail/spool/local
        chmod 770       /var/spool/xmail/spool/temp
        chown root:mail /var/spool/xmail/spool/temp
        chmod 700 /var/cache/xmail

    else if dpkg --compare-versions "$2" lt "1.21" ; then
	echo "E: Backporting from 1.21 is not longer supported. Please purge the old version and reinstall."
        fi
    fi

    SSL_CERT="/var/lib/xmail/server.cert"
    SSL_KEY="/var/lib/xmail/server.key"
    if [ ! -f "$SSL_CERT" ] && [ ! -f "$SSL_KEY" ];then
        echo "I: Creating generic self-signed certificates."
        echo "I: (replace with hand-crafted or authorized one if needed)."
        cd /etc/ssl/certs
        PATH=$PATH:/usr/bin/ssl
        HOSTNAME=`hostname -s`
        FQDN=`hostname -f`
        MAILNAME=`cat /etc/mailname 2> /dev/null || hostname -f`
        (openssl req -new -x509 -days 365 -nodes -out $SSL_CERT -keyout $SSL_KEY > /dev/null 2>&1 <<+
.
.
.
XMail mail server
$HOSTNAME.$DOMAINNAME
$FQDN
root@$MAILNAME
+
) || echo "Warning : Bad SSL config, can't generate certificate"
        chown root:root $SSL_CERT || true
        chmod 0644 $SSL_CERT || true
        chown root:root $SSL_KEY || true
        chmod 0600 $SSL_KEY || true
    fi

     chmod +t /var/spool/xmail/spool/temp
     chmod +t /var/spool/xmail/spool/local
   
    dpkg-statoverride --force --update --add root mail 2555 /var/lib/xmail/sendmail/xsendmail
    ;;

    abort-upgrade|abort-remove|abort-deconfigure)

    ;;

    *)
        echo "postinst called with unknown argument \`$1'" >&2
        exit 1
    ;;
esac

# Automatically added by dh_installinit
if [ -x "/etc/init.d/xmail" ] || [ -e "/etc/init/xmail.conf" ]; then
	if [ ! -e "/etc/init/xmail.conf" ]; then
		update-rc.d xmail defaults >/dev/null
	fi
	invoke-rc.d xmail start || exit $?
fi
# End automatically added section


if [ "$1" = "configure" ]; then 
	
	if [ ! -f /var/run/XMail.pid ]; then
		echo "E: XMail not started. Skipping configuration...."
		exit 0
	fi
	
	if [ -z "$2" ] || [ "$2" = "$CUR_VER" ]; then
            #Make sure xmail starts
	    while [ ! -d /var/lib/xmail/spool/22/22/ ] ; do 
		sleep 1; 
	    done
	    
	    #there is not much i can do here, xmail's startup sucks
	    sleep 2

	    db_get xmail/domainname && domainname="$RET"
            db_get xmail/daemonuser && daemonuser="$RET"
            db_get xmail/daemonpasswd && daemonpasswd="$RET"
            db_get xmail/redirect && redirect="$RET"

	    if [ "$domainname" = "/etc/mailname" ]; then
                if [ -f "/etc/mailname" ]; then
		    domainname=`cat /etc/mailname`
                else
                    echo "I: Configured to use /etc/mailname but none exists. Using hostname --fqdn."
                    domainname=`hostname --fqdn`
                fi
	    fi 
	    
            #add control account data - TAB is a MUST here.
            cat >> /etc/xmail/ctrlaccounts.tab <<EOF
"debian"	"0100070c040b"
EOF
	
	    #maybe we are reconfiguring
            if [ -f "/etc/xmail/default_domain" ]; then
    		    old_domain=`cat /etc/xmail/default_domain`
            else
                   old_domain="xmailserver.test"
            fi
		
            echo "I: Adding new domain."	
	    #Let's see if the domain exists or is an alias to another domain
	    EXISTS_D=$(CtrlClnt -s localhost -u debian -p debian domainlist "$domainname")
	    ALIAS_D=$(CtrlClnt -s localhost -u debian -p debian aliasdomainlist "*" "$domainname")

	    if [ -z "$EXISTS_D" ] && [ -z "$ALIAS_D" ]; then
                CtrlClnt -s localhost -u debian -p debian domainadd $domainname
	    fi
	
	    #an alias domain with the same name exists
	    if [ "$ALIAS_D" ]; then
                CtrlClnt -s localhost -u debian -p debian aliasdomaindel $domainname
                CtrlClnt -s localhost -u debian -p debian domainadd $domainname
	    fi
	    
	    echo "I: Adding user."
	    #Let's see if the special user exists
	    EXISTS=$(CtrlClnt -s localhost -u debian -p debian userlist "$domainname" "$daemonuser")
	    ALIAS=$(CtrlClnt -s localhost -u debian -p debian aliaslist "$domainname" "$daemonuser")

	    if [ -z "$ALIAS" ]; then
		    if [ "$EXISTS" ]; then
			CtrlClnt -s localhost -u debian -p debian userpasswd $domainname $daemonuser $daemonpasswd
		    else
        	        CtrlClnt -s localhost -u debian -p debian useradd $domainname $daemonuser $daemonpasswd U
	            fi	
	    fi

	    if [ "$ALIAS" ]; then
       			CtrlClnt -s localhost -u debian -p debian aliasdel $domainname $daemonuser
                        CtrlClnt -s localhost -u debian -p debian useradd $domainname $daemonuser $daemonpasswd U
            fi

	
	    # add aliases
	    for daemon in root postmaster abuse; do
		if [ "$daemonuser" != "$daemon" ]; then
		
                    #delete old aliases if needed
                    EXISTS_U=$(CtrlClnt -s localhost -u debian -p debian userlist "$domainname" "$daemon")
                    ALIAS_U=$(CtrlClnt -s localhost -u debian -p debian aliaslist "$domainname" "$daemon")

		    if [ "$ALIAS_U" ]; then
			    CtrlClnt -s localhost -u debian -p debian aliasdel $domainname $daemon; 
		    fi
		
		    #if there is already an daemon account then don't touch it
		    if [ -z "$EXISTS_U" ]; then
			    CtrlClnt -s localhost -u debian -p debian aliasadd $domainname $daemon $daemonuser;
		    fi	
		fi
	    done
	 
	    # domain alias to `hostname`   
	    EXISTS_H=$(CtrlClnt -s localhost -u debian -p debian domainlist "`hostname`")
            ALIAS_H=$(CtrlClnt -s localhost -u debian -p debian aliasdomainlist "*" "`hostname`")
			
	    if [ -z "$EXISTS_H" ]; then 
		    #make sure we delete the old alias if we have to
		    if [ "$ALIAS_H" ]; then
			CtrlClnt -s localhost -u debian -p debian aliasdomaindel `hostname`
		    fi
		    
		    CtrlClnt -s localhost -u debian -p debian aliasdomainadd $domainname `hostname`
	    else if [ "$domainname" != "`hostname`" ]; then
		    echo "E: A domain called `hostname` already exists. Please remove it and run dpkg-reconfigure."
	         fi
	    fi
	    
	    #clear out debian install ctrl account
	    sed -i '/"debian"\t"0100070c040b"/d' /etc/xmail/ctrlaccounts.tab

	    #add default domain to cmdline
	    echo $domainname > /etc/xmail/default_domain
	
	    #change settings in server.tab and xsendmail
	    sed -i "s/${old_domain}/${domainname}/g" /etc/xmail/server.tab
	    sed -i "s/${old_domain}\|xmailserver.test/${domainname}/g" /var/lib/xmail/sendmail/xsendmail
				
	    #Add redirect settings in case it's not set
	    if [ "$redirect" ]; then
        	mailproc="/var/lib/xmail/domains/${domainname}/${daemonuser}/mailproc.tab"
		if [ -f "$mailproc" ];  then
                	is_redirect=$(cat $mailproc | grep "redirect");
	                if [ -z "$is_redirect" ]; then ADD=1; fi
       		else	ADD=1
	        fi

            	if [ "$ADD" ]; then
                	echo "I: Adding redirect."
                        # TAB is a MUST here too.
                        cat >> /var/lib/xmail/domains/${domainname}/${daemonuser}/mailproc.tab <<EOF
"redirect"	"${redirect}"
EOF
            	fi
	      fi	

        #restart xmail
        invoke-rc.d xmail restart

	fi
fi
								
exit 0