#!/usr/bin/shellmod
# This module is used to create a new virtual private server

# This module may be use inside linuxconf
# Do linuxconf --modulemain shellmod --setmod @SBINDIR@/newvserver

# Load shellmod support function
. /usr/lib/linuxconf/lib/shellmod-lib.sh

USR_SBIN=@SBINDIR@
USR_LIB_VSERVER=@PKGLIBDIR@
VSERVER_CMD=$USR_SBIN/vserver
CHBIND_CMD=$USR_SBIN/chbind
CHCONTEXT_CMD=$USR_SBIN/chcontext
SAVE_S_CONTEXT_CMD=$USR_LIB_VSERVER/save_s_context
CAPCHROOT_CMD=$USR_LIB_VSERVER/capchroot
VSERVERKILLALL_CMD=$USR_LIB_VSERVER/vserverkillall


usage(){
	cat <<-EOF >&2

newvserver [ options ]

    Interactive utility to create vservers.

Options:
    --name: Set the name of the new vserver.
    --desc: Set the description.
    --unify 1/0: Turn on unification on and off.
    --hostname: Set the host name of the new vserver
    --ip: Set the IP number(s)
    --ondev: Install the IP numbers as IP aliases on device.
    --clone: Create the vserver from another one or a distribution CD.

The distribution CD are identified by special strings:
    #rh9.0m: RedHat 9 minimal
    #rh9.0f: RedHat 9 complete first CD
    #rh8.0m: RedHat 8 minimal
    #rh8.0f: RedHat 8 complete first CD
    #rh7.3m: RedHat 7.3 minimal
    #rh7.3f: RedHat 7.3 complete first CD
    #rh7.2m: RedHat 7.2 minimal
    #rh7.2f: RedHat 7.2 complete first CD

EOF
}

register(){
	qecho regmenu main MENU_MISCSERV "Create a new vserver"
}

check_name(){
	LEN=`echo -n $1 | wc -c`
	SMALL=`expr $LEN \<= 10`
	if [ "$SMALL" = "1" ] ; then
		return 0
	fi
	return 1
}

check_hostname(){
	case $1 in
	*\.*)
		return 0
		;;
	*)
		;;
	esac
	return 1
}

check_ip(){
	case $1 in
	*\.*\.*\.*)
		return 0
		;;
	*)
		;;
	esac
	return 1
}

check_device(){
	if [ "$1" = "" ] ; then
		return 1;
	fi
	return 0
}

# Tell the user to mount the CD
check_cd(){
	echo defval s1 "Make sure the $1"
	echo defval s1 "is mounted on /mnt/cdrom"
	echo defval s1
	echo defval s1 "Execute \"mount /mnt/cdrom\" if not"
	echo notice =s1
}

# Set a fake fstab and mtab in a vserver
# $1 is the vserver path (/vserver/id)
set_fstab(){
	mkdir -p $1/etc
	echo /dev/hdv1	/	ext2	defaults	1	1 >$1/etc/fstab
	echo /dev/hdv1	/	ext2	rw	1	1 >$1/etc/mtab
}

# Show a progress bar during installation
# The sub-process sends the number of output line first, then the lines
execprogress(){
	LOG=$1
	title=$2
	desc=$3
	shift; shift; shift
	$* |
	(
		>$LOG
		read SIZE rest
		qecho DIALOG
		qecho settype DIATYPE_POPUP
		qecho newf_str p1 "Package"
		qecho newf_gauge s1 "$desc" 0 $SIZE
		qecho show "$title" "$SIZE $rest"
		nb=0
		while read pkg line
		do
			nb=`expr $nb + 1`
			printf "%-20s %s\n" $pkg $line >>$LOG
			qecho newf_str p1 "Package" "$pkg"
			qecho newf_gauge s1 "$desc" $nb $SIZE
			qecho show "$title" "$SIZE $rest"
		done
		qecho end
	)
}

# install some packages with a progress bar
installpkgs(){
	LOG=$1
	shift
	execprogress $LOG "Installing" "Packages installed" $*
}

# Point d'entré du module
main(){
	name=
	desc=
	clone=/
	unify=1
	hostname=
	ip=
	ondev=eth0
	if [ -f /etc/vservers/newvserver.defaults ] ; then
		source /etc/vservers/newvserver.defaults
	fi
	while [ "$1" != "" ]
	do
		case $1 in
		--help)
			usage
			exit
			;;
		--name)
			name=$2
			shift; shift
			;;
		--desc)
			desc=$2
			shift; shift
			;;
		--unify)
			unify=$2
			shift; shift
			;;
		--hostname)
			hostname=$2
			shift; shift
			;;
		--ip)
			ip="$2"
			shift; shift
			;;
		--ondev)
			ondev=$2
			shift; shift
			;;
		--clone)
			clone=$2
			shift; shift
			;;
		*)
			qecho error "Invalid option $1"
			exit 1
		esac
	done
	qecho DIALOG
	qecho newf_title top 1 top
	qecho newf_str name "Vserver name (max 10 chars)" $name
	qecho newf_str desc "Vserver description" "$desc"
	qecho newf_list clone "Clone vserver" $clone
	for conf in /etc/vservers/*.conf
	do
		case $conf in
		/etc/vservers/\*.conf)
			;;
		*)
			DESC=`grep "# Description:" $conf | ( read a b c; echo $c)`
			qecho listitem `basename $conf .conf` "$DESC"
			;;
		esac
	done
	qecho listitem / "Root server"
	qecho listitem "#rh9.0m" "From RedHat 9.0 CDrom/Minimal"
	qecho listitem "#rh9.0f" "From RedHat 9.0 CDrom/Full"
	qecho listitem "#rh8.0m" "From RedHat 8.0 CDrom/Minimal"
	qecho listitem "#rh8.0f" "From RedHat 8.0 CDrom/Full"
	qecho listitem "#rh7.3m" "From RedHat 7.3 CDrom/Minimal"
	qecho listitem "#rh7.3f" "From RedHat 7.3 CDrom/Full"
	qecho listitem "#rh7.2" "From RedHat 7.2 CDrom"
	#qecho listitem "#mdk8.2m" "From Mandrake 8.2 CDrom/Minimal"
	#qecho listitem "#mdk8.2f" "From Mandrake 8.2 CDrom/Full"
	qecho newf_chk unify "Unified mode" 1 "Share disk space" $unify

	qecho newf_title Networking 1 Networking
	qecho newf_str hostname "Host name" $hostname
	qecho newf_info "" "Up to 16 IP numbers"
	qecho newf_str ip "IP number(s)" "$ip"
	qecho newf_str ondev "Install IP on device" $ondev

	qecho newf_title Authentication 1 Authentication
	qecho newf_pass pass1 "Root password"
	qecho newf_pass pass2 "Root password (retype)"
	qecho newf_chk usemd5 "Password format" 1 "Use MD5"
	qecho newf_chk useshadow "Password location" 1 "/etc/shadow"

	qecho newf_title NIS/LDAP 1 NIS/LDAP
	qecho newf_str nisserver  "NIS server"
	qecho newf_str domainname "NIS domainname"
	qecho newf_str ldapserver "LDAP server"
	qecho newf_str ldapbasedn "LDAP base dn"

	qecho newf_title Services 1 Services
	qecho newf_chk crond  "crond"  1 "Scheduled tasks"
	qecho newf_chk httpd  "httpd"  0 "Web server"
	qecho newf_chk sshd   "sshd"   1 "Secure shell server"
	qecho newf_chk cleansshd ""    1 "Redo sshd server keys"
	qecho newf_chk syslog "syslog" 1 "Message logger"
	qecho newf_chk xinetd "xinetd" 0 "On demand inet service"
	qecho newf_chk nscd   "nscd"   0 "Name service cache daemon"

	qecho newf_title "Backup profile" 1 "Backup profile"
	qecho newf_str bkhostname "Host name"
	qecho newf_info "" "Up to 16 IP numbers"
	qecho newf_str bkip "IP number(s)"
	qecho newf_str bkondev "Install IP on device" eth0

	qecho newf_title Extra 1 Extra
	qecho newf_chk onboot "Start server" 0 "at boot time"
	qecho newf_str priority "Start priority" 100
	qecho newf_str nice "Nice level"
	qecho newf_info "Available flags" "lock nproc sched hideinfo private"
	qecho newf_str flags "Flags" "lock nproc"
	qecho newf_str ulimit "Vserver ulimit" "-H -u 1000"


	qecho newf_title "Shared directories" 1 "Shared directories"
	qecho newf_str dir1 "Directory"
	qecho newf_str dir2 "Directory"
	qecho newf_str dir3 "Directory"
	qecho newf_str dir4 "Directory"

	qecho newf_title "Excluded directories" 1 "Excluded directories"
	qecho newf_info "" "Won't copy files in those directories"
	qecho newf_str exdir1 "Directory" "/var/log"
	qecho newf_str exdir2 "Directory" "/var/run"
	qecho newf_str exdir3 "Directory" "/var/spool/mail"
	qecho newf_str exdir4 "Directory" "/tmp"
	qecho newf_str exdir5 "Directory" ""
	qecho newf_str exdir6 "Directory" ""


	while true
	do
		qecho edit "Vserver basic setup" 
		dispatch
		if [ $CODE != "accept" ] ; then
			break
		elif ! check_name $name ; then
			qecho error "You must provide a name (10 chars max)"
		elif ! check_hostname $hostname ; then
			qecho error "You must provide a valid/fully qualified host name"
		elif ! check_ip $ip ; then
			qecho error "You must provide a valid IP number"
		elif ! check_device $ondev ; then
			qecho error "You must provide a valid network device"
		elif [ "$pass1" != "" -a "$pass1" != "$pass2" ] ; then
			echo defval s1 The two passwords differ.
			echo defval s1 You must re-enter the root password.
			echo error =s1
		else
			STARTTIME=`date +%s`
			ONBOOT=no
			if [ "$onboot" = "1" ] ; then
				ONBOOT=yes
			fi
			VROOT=/vservers/$name
			CONF=/etc/vservers/$name.conf
			$USR_LIB_VSERVER/install-pre.sh $name
			rm -f $CONF >/dev/null 2>/dev/null
			echo "# Description: $desc" >>$CONF
			echo >>$CONF
			echo "if [ \"$PROFILE\" = \"\" ]; then" >>$CONF
			echo "	PROFILE=prod" >>$CONF
			echo "fi" >>$CONF
			echo "case \$PROFILE in" >>$CONF
			echo "prod)" >>$CONF
			echo "	# Select the IP number(s) assigned to the virtual server" >>$CONF
			echo "	# These IPs will be defined as IP alias" >>$CONF
			echo "	# The alias will be setup on IPROOTDEV" >>$CONF
			echo "	# You can specify the device if needed" >>$CONF
			echo "	# IPROOT=\"eth0:1.2.3.4 eth1:3.4.5.6\" " >>$CONF
			echo "	IPROOT=\"$ip\"" >>$CONF
			echo "	# You can define on which device the IP alias will be done" >>$CONF
			echo "	# The IP alias will be set when the server is started and unset" >>$CONF
			echo "	# when the server is stopped" >>$CONF
			echo "	# The netmask and broadcast are computed by default from IPROOTDEV" >>$CONF
			echo "	#IPROOTMASK=" >>$CONF
			echo "	#IPROOTBCAST=" >>$CONF
			echo "	IPROOTDEV=$ondev" >>$CONF
			echo "	# You can set a different host name for the vserver" >>$CONF
			echo "	# If empty, the host name of the main server is used" >>$CONF
			echo "	S_HOSTNAME=$hostname" >>$CONF
			echo "	;;" >>$CONF
			echo "backup)" >>$CONF
			echo "	IPROOT=\"$bkip\"" >>$CONF
			echo "	#IPROOTMASK=" >>$CONF
			echo "	#IPROOTBCAST=" >>$CONF
			echo "	IPROOTDEV=$bkondev" >>$CONF
			echo "	S_HOSTNAME=$bkhostname" >>$CONF
			echo "	;;" >>$CONF
			echo "esac" >>$CONF
			echo "# Set ONBOOT to yes or no if you want to enable this" >>$CONF
			echo "# virtual server at boot time" >>$CONF
			echo "ONBOOT=$ONBOOT" >>$CONF
			echo "# Control the start order of the vservers" >>$CONF
			echo "# Lower value start first" >>$CONF
			echo "PRIORITY=$priority" >>$CONF
			echo "# You can set a different NIS domain for the vserver" >>$CONF
			echo "# If empty, the current on is kept" >>$CONF
			echo "# Set it to \"none\" to have no NIS domain set" >>$CONF
			echo "S_DOMAINNAME=$domainname" >>$CONF
			echo "# You can set the priority level (nice) of all process in the vserver" >>$CONF
			echo "# Even root won't be able to raise it" >>$CONF
			echo "S_NICE=$nice" >>$CONF
			echo "# You can set various flags for the new security context" >>$CONF
			echo "# lock: Prevent the vserver from setting new security context" >>$CONF
			echo "# sched: Merge scheduler priority of all processes in the vserver" >>$CONF
			echo "#        so that it acts a like a single one." >>$CONF
			echo "# nproc: Limit the number of processes in the vserver according to ulimit" >>$CONF
			echo "#        (instead of a per user limit, this becomes a per vserver limit)" >>$CONF
			echo "# private: No other process can join this security context. Even root" >>$CONF
			echo "# Do not forget the quotes around the flags" >>$CONF
			echo "S_FLAGS=\"$flags\"" >>$CONF
			echo "# You can set various ulimit flags and they will be inherited by the" >>$CONF
			echo "# vserver. You enter here various command line argument of ulimit" >>$CONF
			echo "# ULIMIT=\"-H -u 200\"" >>$CONF
			echo "# The example above, combined with the nproc S_FLAGS will limit the" >>$CONF
			echo "# vserver to a maximum of 200 processes" >>$CONF
			echo "ULIMIT=\"$ulimit\"" >>$CONF
			echo "# You can set various capabilities. By default, the vserver are run" >>$CONF
			echo "# with a limited set, so you can let root run in a vserver and not" >>$CONF
			echo "# worry about it. He can\'t take over the machine. In some cases" >>$CONF
			echo "# you can to give a little more capabilities \(such as CAP_NET_RAW\)" >>$CONF
			echo "# S_CAPS=\"CAP_NET_RAW\"" >>$CONF
			echo "S_CAPS=\"\"" >>$CONF
			echo "# Select an unused context (this is optional)" >>$CONF
			echo "# The default is to allocate a free context on the fly" >>$CONF
			echo "# In general you don't need to force a context" >>$CONF
			echo "#S_CONTEXT=" >>$CONF

			# Now we create the optional companion startup script
			# for the vserver
			SCRIPT=/etc/vservers/$name.sh
			echo "#!/bin/sh" >$SCRIPT
			echo 'case $1 in' >>$SCRIPT
			echo "pre-start)" >>$SCRIPT
			for dir in $dir1 $dir2 $dir3 $dir4  none
			do
				if [ "$dir" != "none" ] ; then
					echo "	mkdir -p $VROOT/$dir" >>$SCRIPT
					echo "	mount --bind $dir $VROOT/$dir" >>$SCRIPT
				fi
			done
			echo "	;;" >>$SCRIPT
			echo "post-start)" >>$SCRIPT
			echo "	;;" >>$SCRIPT
			echo "pre-stop)" >>$SCRIPT
			echo "	;;" >>$SCRIPT
			echo "post-stop)" >>$SCRIPT
			for dir in $dir1 $dir2 $dir3 $dir4  none
			do
				if [ "$dir" != "none" ] ; then
					echo "	umount $VROOT/$dir" >>$SCRIPT
				fi
			done
			echo "	;;" >>$SCRIPT
			echo '*)' >>$SCRIPT
	    	echo '	echo $0 pre-start' >>$SCRIPT
			echo '	echo $0 pre-stop' >>$SCRIPT
			echo '	echo $0 post-start' >>$SCRIPT
			echo '	echo $0 post-stop' >>$SCRIPT
			echo "	;;" >>$SCRIPT
			echo "esac" >>$SCRIPT
			chmod +x $SCRIPT

			LOG=/var/run/newvserver.log.$$
			if [ "$clone" = "/" ] ; then
				# Unification does not work on / yet
				$VSERVER_CMD $name build >$LOG
			elif [ "$clone" = "#rh7.2" ] ; then
				check_cd "first RedHat 7.2 CD"
				set_fstab $VROOT
				installpkgs $LOG $USR_LIB_VSERVER/install-rh7.2 $name
			elif [ "$clone" = "#rh7.3m" -o "$clone" = "#rh7.3f" ] ; then
				check_cd "first RedHat 7.3 CD"
				set_fstab $VROOT
				if [ "$clone" = "#rh7.3m" ] ;then
					installpkgs $LOG $USR_LIB_VSERVER/install-rh7.3 $name minimum
				else
					installpkgs $LOG $USR_LIB_VSERVER/install-rh7.3 $name full
				fi
			elif [ "$clone" = "#rh8.0m" -o "$clone" = "#rh8.0f" ] ; then
				check_cd "first RedHat 8.0 CD"
				set_fstab $VROOT
				if [ "$clone" = "#rh8.0m" ] ;then
					installpkgs $LOG $USR_LIB_VSERVER/install-rh8.0 $name minimum
				else
					installpkgs $LOG $USR_LIB_VSERVER/install-rh8.0 $name full
				fi
			elif [ "$clone" = "#rh9.0m" -o "$clone" = "#rh9.0f" ] ; then
				check_cd "first RedHat 9.0 CD"
				set_fstab $VROOT
				if [ "$clone" = "#rh9.0m" ] ;then
					installpkgs $LOG $USR_LIB_VSERVER/install-rh9.0 $name minimum
				else
					installpkgs $LOG $USR_LIB_VSERVER/install-rh9.0 $name full
				fi
			elif [ "$unify" = "0" ] ; then
				cp -ax /vservers/$clone/. $VROOT/. >$LOG
			else
				EXCLOPT=
				for dir in $exdir1 $exdir2 $exdir3 $exdir4  $exdir5 $exdir6 none
				do
					if [ "$dir" != "none" ] ; then
						EXCLOPT="$EXCLOPT --excldir $dir"
					fi
				done
				$USR_LIB_VSERVER/vbuild $EXCLOPT --stats /vservers/$clone $VROOT >$LOG
			fi
			rm -f $VROOT/var/run/utmp
			$USR_LIB_VSERVER/fakerunlevel 3 $VROOT/var/run/utmp
			test "$crond" = 1 && $VSERVER_CMD $name chkconfig crond on >/dev/null
			test "$httpd" = 1 && $VSERVER_CMD $name chkconfig httpd on >/dev/null
			test "$sshd" = 1 && $VSERVER_CMD $name chkconfig sshd on >/dev/null
			if [ "$cleansshd" = 1 ] ; then
				echo Deleting sshd server keys >>$LOG
				rm -f $VROOT/etc/ssh/*_key
				rm -f $VROOT/etc/ssh/*_key.pub
			fi
			test "$syslog" = 1 && $VSERVER_CMD $name chkconfig syslog on >/dev/null
			test "$xinetd" = 1 && $VSERVER_CMD $name chkconfig xinetd on >/dev/null
			test "$nscd" = 1 && $VSERVER_CMD $name chkconfig nscd on >/dev/null
			host0=`echo $hostname | sed 's/\./ /g' | ( read a b; echo $a)`
			echo $ip $hostname $host0 localhost >$VROOT/etc/hosts
			RHNETWORK=$VROOT/etc/sysconfig/network
			if [ -f $RHNETWORK ] ; then
				cat $RHNETWORK | grep -v HOSTNAME >/tmp/newvserver.tmp.$$
				cp /tmp/newvserver.tmp.$$ $RHNETWORK
				echo HOSTNAME=$hostname >>$RHNETWORK
			fi
			# Umount proc and /dev/pts
			$VSERVER_CMD $name stop >/dev/null
			ENDTIME=`date +%s`
			DURATION=`expr $ENDTIME - $STARTTIME`

			echo defval s1 Server $name was installed in $VROOT
			echo defval s1 The configuration file /etc/vservers/$name.conf was created
			echo defval s1 The script /etc/vservers/$name.sh was created
			echo defval s1 Vserver $name was created in $DURATION seconds
			echo defval s1 
			cat $LOG | while read line
			do
				echo defval s1 $line
			done
			echo notice =s1
			rm -f $LOG
			# Finish some stuff: root password, account policies
			if [ -x $VROOT/usr/sbin/authconfig ] ; then
				SHADOWOPT=
				MD5OPT=
				NISOPT=
				LDAPOPT=
				if [ "$usemd5" = "1" ] ; then
					MD5OPT=--usemd5
				fi
				if [ "$useshadow" = "1" ] ; then
					SHADOWOPT=--useshadow
				fi
				if [ "$nisserver" != "" ] ; then
					NISOPT="--nisserver $nisserver --nisdomain $domainname"
				fi
				if [ "$ldapserver" != "" ] ; then
					LDAPOPT="--ldapserver $ldapserver --ldapbasedn $ldapbasedn"
				fi
				$VSERVER_CMD $name exec /usr/sbin/authconfig \
					--nostart --kickstart \
					$SHADOWOPT $MD5OPT $NISOPT $LDAPOPT
			fi
			if [ "$pass1" != "" ] ; then
				(echo $pass1; sleep 5; echo $pass1) \
					| $VSERVER_CMD --silent $name exec passwd >/dev/null
 			fi
			break
		fi
	done
	qecho end
}

dispatch