#!/bin/bash

function check_lock() {
if [ -e "/var/lock/vz-migrate.lock" ]; then
	echo "Lock file detected, euthanizing self."
	exit
else
	touch /var/lock/vz-migrate.lock
fi
}

function create_vg() {
	echo "Creating logical volume for $NAME"
	lvcreate -L 20G -n $NAME my_volume_group
	if [ $? != "0" ]
	then
		echo
		echo "Volume Group already exists!"
		echo "You must delete this host before continuing."
		echo
		exit
	else
		mkfs -t ext3 /dev/my_volume_group/$NAME
		echo "Mounting..."
		mount -t ext3 /dev/my_volume_group/$NAME /mnt
		if [ $? != "0" ]
			then echo "Mount error.  Mount point already in use?"
			exit
		fi
	fi	
}

function get_data() {
echo -n "What is the host name? "
read NAME

echo -n "IP Address? "
read OLDIP

echo -n "Netmask? "
read NETMASK

echo -n "Gateway? "
read GATEWAY

echo -n "Root Password? "
read ROOTPW

echo -n "Old host server (vzXXX) ? "
read OLDSERVER
}

function copy_template() {
echo "Copying template data over..."
tar xjpvf /usr/src/centos4-cpanel-template.tar.bz2 -C /mnt
}

function create_swap() {
echo "Creating swap file..."
dd if=/dev/zero of=/xen/swap/${NAME}.swap bs=1k seek=256k count=1
mkswap /xen/swap/${NAME}.swap
}

check_lock
get_data
create_vg
create_swap
copy_template

echo "Creating config file..."

cat << EOF > /etc/xen/auto/$NAME.cfg 
kernel = "/boot/xenkernel"
memory = 256
name = "$NAME"
vif = [ '' ]
disk = ['phy:my_volume_group/${NAME},sda1,w', 'tap:aio:/xen/swap/${NAME}.swap,sda2,w']
root = "/dev/sda1 ro"
EOF

echo "Applying network config..."
cat << EOF > /mnt/etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
BOOTPROTO=static
IPADDR=$OLDIP
NETMASK=$NETMASK
GATEWAY=$GATEWAY
ONBOOT=yes
TYPE=Ethernet
EOF

cat << EOF > /mnt/etc/sysconfig/network
NETWORKING=yes
HOSTNAME=$NAME
EOF

# Create MySQL config file
# cp /mnt/usr/share/mysql/my-small.cnf /mnt/etc/my.cnf

echo "Creating ssh key to access old server."
# Create ssh key and copy it over
if [ ! -e /root/.ssh/id_dsa.pub ]; then
	mkdir /root/.ssh
	ssh-keygen -t dsa -q -N "" -f /root/.ssh/id_dsa
	ssh $OLDIP mkdir /root/.ssh
	cat /root/.ssh/id_dsa.pub | ssh $OLDIP "cat >> /root/.ssh/authorized_keys"
else
	cat /root/.ssh/id_dsa.pub | ssh $OLDIP "cat >> /root/.ssh/authorized_keys"
fi

# Change Cpanel Settings
#echo maildir=0 >> /var/cpanel/cpanel.config
#echo mysqloldpass=1 >> /var/cpanel/cpanel.config


echo "Copying data, this may take a while..."

# Password, shadow, group, and IP info

scp $OLDIP:/etc/userdomains /mnt/etc/
scp $OLDIP:/etc/localdomains /mnt/etc/
scp $OLDIP:/etc/shadow /mnt/etc/
scp $OLDIP:/etc/passwd /mnt/etc/
scp $OLDIP:/etc/group /mnt/etc/
scp $OLDIP:/etc/ips /mnt/etc/

# Mail Stuff
rsync -av $OLDIP:/etc/valiases/ /mnt/etc/valiases/
rsync -av $OLDIP:/etc/vfilters/ /mnt/etc/vfilters/
rsync -av $OLDIP:/usr/local/cpanel/3rdparty/mailman/ /mnt/usr/local/cpanel/3rdparty/mailman/

# MySQL Data
rsync -av $OLDIP:/var/lib/mysql/ /mnt/var/lib/mysql/

# Apache
rsync -av $OLDIP:/usr/local/apache/ /mnt/usr/local/apache/

# Frontpage
rsync -av $OLDIP:/usr/local/frontpage/ /mnt/usr/local/frontpage/
# Var Stuff
rsync -av $OLDIP:/var/spool/ /mnt/var/spool/
rsync -av $OLDIP:/var/cpanel/ /mnt/var/cpanel/

# SSL Stuff
rsync -av $OLDIP:/usr/share/ssl/ /mnt/usr/share/ssl/

# Home Directories
rsync -av $OLDIP:/home/ /mnt/home/

# LW Stuff
rsync -av $OLDIP:/usr/local/lp/ /mnt/usr/local/lp/

echo "Rsync done, whee!!"
umount /mnt

echo "Shutting off old server..."
ssh $OLDIP shutdown -h now

echo "Waiting 5 seconds:"
count="6"
min="1"
while [ $count != $min ]; do count=`expr $count - 1`
        echo -n "$count..."
        sleep 1
done
echo

rm -fv /var/lock/vz-migrate.lock

echo "Clear ARP and then start new account with the following command: "
echo "xm create /etc/xen/auto/$NAME.cfg -c"