#!/bin/bash
set -e

usage() {
	cat <<-EOF

usage: $0 <ext4|jfs|xfs|reiserfs|reiser4> <guest name> <IP>

EOF
	exit 1
}

createfs() {
	[[ $fs = ext4 ]] && mkfsopts="-F"
	[[ $fs = xfs ]] && mkfsopts="-f"
	[[ $fs = reiserfs ]] && mkfsopts="-f"
	[[ $fs = reiser4 ]] && mkfsopts="-f -y"
	#[[ $fs = btrfs ]] && mkfsopts="-f"

	echo creating $guest.$fs
	dd if=/dev/zero of=$guest.$fs bs=1024k count=0 seek=10240 && echo done

	targetbd=$guest.$fs
	echo making $fs file-system on $targetbd:
	if [[ $fs = jfs ]]; then
		echo y | mkfs.$fs $targetbd && echo done
	else
		mkfs.$fs $mkfsopts $targetbd && echo done
	fi

	echo -n mounting $targetbd...
	mkdir lala/
	mount -t $fs -o loop,rw $targetbd lala/ && echo done

	unset targetbd
}

[[ -z $3 ]] && usage
fs=$1
guest=$2
ip=$3
targettag=ADD

[[ ! -x /root/bin/slackware.install.bash ]] && echo /root/bin/slackware.install.bash not executable && exit 1

[[ -d /data/guests/$guest/ ]] && echo /data/guests/$guest/ already exists && exit 1
mkdir /data/guests/$guest/
cd /data/guests/$guest/

/data/tftpboot/sync.slackware

createfs
mount | grep lala
echo ''

/root/bin/slackware.install.bash $targettag

#[[ ! -f ../lala.tar.gz ]] && echo ../lala.tar.gz not found && exit 1
#echo -n extracting ../lala.tar.gz...
#tar xzf ../lala.tar.gz && echo done

[[ ! -d lala/etc/ ]] && echo WTF lala/etc/ not found && exit 1

echo -n writing fstab...
cat > lala/etc/fstab <<-EOF && echo done
/dev/xvda1       /                $fs defaults,noatime,nodiratime 1 1
devpts           /dev/pts         devpts      gid=5,mode=620   0   0
proc             /proc            proc        defaults         0   0
tmpfs            /dev/shm         tmpfs       defaults         0   0
EOF

echo disabling useless shit from rc.d tag ADD
chmod -x lala/etc/rc.d/rc.cpufreq
chmod -x lala/etc/rc.d/rc.loop
#chmod -x lala/etc/rc.d/rc.modules
#chmod -x lala/etc/rc.d/rc.modules.local

echo -n lib.modules...
tar xzf /data/kernels/lib.modules.4.18.16.domureiser4.tar.gz -C lala/lib/modules/ && echo done

echo -n enabling TMEM...
cat >> lala/etc/rc.d/rc.modules.local <<EOF && echo done
/sbin/modprobe tmem
EOF
chmod +x lala/etc/rc.d/rc.modules
chmod +x lala/etc/rc.d/rc.modules.local

if [[ $targettag = REC || $targettag = OPT ]]; then
	echo disabling useless shit from rc.d tag REC
	chmod -x lala/etc/rc.d/rc.bluetooth
	chmod -x lala/etc/rc.d/rc.cgmanager
	chmod -x lala/etc/rc.d/rc.cgproxy
	chmod -x lala/etc/rc.d/rc.inetd
fi

echo -n brutal network setup...
mv -i lala/etc/rc.d/rc.inet1 lala/etc/rc.d/rc.inet1.dist
chmod -x lala/etc/rc.d/rc.inet1.dist
cat > lala/etc/rc.d/rc.inet1 <<EOF && echo done
#!/bin/bash

echo rc.inet1 PATH is \$PATH

echo -n lo...
ifconfig lo up && echo done

echo -n eth0...
ifconfig eth0 $ip/24 up && echo done

echo -n default route...
route add default gw ${ip%\.*}.254 && echo done
EOF

chmod +x lala/etc/rc.d/rc.inet1

echo -n hostname...
echo $guest > lala/etc/HOSTNAME && echo done

mv lala/etc/hosts lala/etc/hosts.dist
cat > lala/etc/hosts <<EOF
127.0.0.1	localhost
$ip	$guest
${ip%\.*}.254  snegw
#188.130.155.33 gw33
EOF

echo -n resolv.conf...
cat > lala/etc/resolv.conf <<EOF && echo done
search sne.lan
nameserver 10.1.1.5
nameserver 208.67.222.222
nameserver 208.67.220.220
EOF

echo -n authorized keys...
mkdir lala/root/.ssh/
chmod 700 lala/root/.ssh/
cat > lala/root/.ssh/authorized_keys <<EOF && echo done
ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDbTpf3Ni8Rlo5Gzr6NNpis1IDZe7Rpxm438Tfx7CQb8 kirill
ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOpFpQUzkGZH2P5Y1aiDwHEsjqwcse4oqILnm1HhJ+Ba saif
ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAION2MRRymPnR2SICsUYYppwFLqXfCKbHYspWFzuoSs2v pierre       
ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDsCdROPtxyD791neDGIkhMk9hCkITg2OZikBMKVEqsI bounce@snegw
ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFXJ69fDwV3ZbVYB2oW5hDLuvuQ0ZYGpWHCocgcwyRUm elge@oldschool
EOF
chmod 600 lala/root/.ssh/authorized_keys

echo replacing hwclock executable
mv lala/sbin/hwclock lala/sbin/hwclock.dist
ln -s ../usr/bin/true lala/sbin/hwclock

echo -n getting rid of the old consoles...
mv lala/etc/inittab lala/etc/inittab.dist
sed '/^c[1-6]/d' lala/etc/inittab.dist > lala/etc/inittab && echo done

echo -n adding hvc0...
cat >> lala/etc/inittab <<EOF && echo done
c1:12345:respawn:/sbin/agetty --noclear 115200,38400,9600 hvc0 linux
EOF

echo -n securetty...
echo hvc0 >> lala/etc/securetty && echo done

echo fixing timezone
rm -f lala/etc/localtime-copied-from
rm -f lala/etc/localtime
ln -s ../usr/share/zoneinfo/Europe/Moscow lala/etc/localtime
#ln -s ../usr/share/zoneinfo/Europe/Paris lala/etc/localtime

mv lala/etc/slackpkg/mirrors lala/etc/slackpkg/mirrors.dist
echo 'http://10.1.1.12/slackware142/' > lala/etc/slackpkg/mirrors
echo '# http://mirror.rol.ru/slackware/slackware64-14.2/' >> lala/etc/slackpkg/mirrors

#cp lala/etc/profile lala/etc/profile.dist
#echo -n shell aliases...
#echo >> lala/etc/profile <<EOF && echo done
#alias ll='ls -lhF'
#alias l='ls -altrhF'
#export TERM=xterm
#EOF

#wget http://slakfinder.org/slackpkg+/pkg/slackpkg+-1.7.0-noarch-9mt.txz

#slackpkg install ca-certificates-20161130 openssl
#update-ca-certificates 
#c_rehash

#https://lime-technology.com/forums/topic/29976-ssl-ca-certificates-missing-but-adding-has-unpredictable-results/

echo -n enabling tmem...
cat >> lala/etc/rc.d/rc.modules.local <<-EOF && echo done
/sbin/modprobe tmem
EOF
chmod +x lala/etc/rc.d/rc.modules
chmod +x lala/etc/rc.d/rc.modules.local

echo -n cpu-online...
cat > lala/etc/udev/rules.d/cpu-online.rules <<-EOF && echo done
SUBSYSTEM=="cpu", ACTION=="add", RUN+="/bin/sh -c 'echo 1 > %S%p/online'"
EOF

echo -n setting up openssh...
mv lala/etc/ssh/sshd_config lala/etc/ssh/sshd_config.dist
sed '/^#/d; /^$/d' lala/etc/ssh/sshd_config.dist > lala/etc/ssh/sshd_config.dist.clean
cat > lala/etc/ssh/sshd_config <<EOF && echo done
AuthorizedKeysFile	.ssh/authorized_keys
Subsystem sftp /usr/libexec/sftp-server

Port 2222
Protocol 2
AddressFamily inet
#ListenAddress x.x.x.x
#AllowGroups root
AllowGroups wheel
PermitRootLogin without-password
PasswordAuthentication no
PermitEmptyPasswords no
StrictModes yes
X11Forwarding no
UsePam no
#HostKey /etc/ssh/ssh_host_ecdsa_key
HostKey /etc/ssh/ssh_host_ed25519_key
EOF

du -sh lala

echo -n un-mounting...
umount lala && echo done
rmdir lala

echo -n writing guest config...
#no -EOF
cat > $guest <<EOF && echo done
kernel = "/data/kernels/vmlinuz"
root = "/dev/xvda1 ro console=hvc0"
#ipv6.disable=1
name = "$guest"
memory = "8192"
vcpus = "16"
maxvcpus = "16"
disk = ['tap:tapdisk:aio:/data/guests/$guest/$guest.$fs,xvda1,w']
vif = [ 'bridge=pubbr0, vifname=$guest.0' ]
EOF

echo ''
echo /data/guests/$guest/ is ready
echo ''