#!/bin/bash
# Ubuntu 22.04 postinstall script
# Run it as wget -O - <URL> | sh , because | bash works incorrectly

BASEURL=https://ukr.pw

export DEBIAN_FRONTEND=noninteractive
apt-get update
echo "Europe/Kiev" > /etc/timezone
rm -f /etc/localtime ; ln -s /usr/share/zoneinfo/Europe/Kiev /etc/localtime
DEBIAN_FRONTEND=noninteractive apt-get -y install screen vim-nox lynx telnet ftp mc whois traceroute pigz pbzip2 p7zip mlocate psmisc lsof strace binutils
apt-get -y purge nano
updatedb &

wget -O - $BASEURL/vimrc.txt > /etc/vim/vimrc
cat /etc/vim/vimrc > /root/.vimrc
cp -f /root/.vimrc /etc/skel
wget -O - $BASEURL/ub/c-s.txt > /etc/default/console-setup
wget -O - $BASEURL/lynx.cfg.txt > /etc/lynx/lynx.cfg
wget -O - $BASEURL/ub/50-default.txt > /etc/rsyslog.d/50-default.conf
systemctl restart rsyslog
wget -O - $BASEURL/ub/rsyslog.logrotate.txt > /etc/logrotate.d/rsyslog
sed -i -e 's/^weekly/monthly/' -e '/^monthly/a minsize 1M' -e 's/rotate 4/rotate 1/' /etc/logrotate.conf

# Iptables-persistent:
apt-get -y install iptables-persistent
rm -f /etc/iptables/rules.v6 /usr/share/netfilter-persistent/plugins.d/25-ip6tables

# configure color prompt with clock:
PUSHD=`pwd`
cd /root
wget -O - $BASEURL/ub/dotbashrc.txt > .bashrc
cp -f .bashrc /etc/skel
cd /home
for i in `ls -1`; do
   cp -f /root/.bashrc $i
   chown $i: $i/.bashrc
done
sed -i -e 's/^PS1/#PS1/' /etc/bash.bashrc
wget -O - $BASEURL/ub/prompt.txt >> /etc/bash.bashrc
wget -O /bin/gp $BASEURL/gp.txt
wget -O - $BASEURL/ub/top.cron.txt >> /etc/crontab
chmod 755 /bin/gp
echo "    StrictHostKeyChecking no" >> /etc/ssh/ssh_config
sed -i -e '/ssh_host_ed25519/a HostKeyAlgorithms +ssh-rsa,ssh-dss' /etc/ssh/sshd_config

chmod 644 /etc/sudoers
echo "root    ALL=(ALL:ALL) ALL" > /etc/sudoers
echo "%sudo   ALL=(ALL:ALL) NOPASSWD: ALL" >> /etc/sudoers
chmod 440 /etc/sudoers

SWAP=`free | grep Swap: | awk '{ print $2 }'`

if [ $SWAP -eq 0 ]; then
   MEM=`free | grep Mem: | awk '{ print $2 }'`
   SWAPSIZE=$(($MEM/2))
   if [ $SWAPSIZE -gt 3100000 ]; then SWAPSIZE=3100000; fi
   echo
   echo "No swap found, creating swap file $SWAPSIZE megabytes"
   echo
   swapoff -a
   rm -f /pagefile.sys
   dd if=/dev/zero of=/pagefile.sys bs=100M count=$(($SWAPSIZE/100000))
   chmod 600 /pagefile.sys
   mkswap -f /pagefile.sys
   grep -v swap /etc/fstab > /tmp/fstab
   mv -f /tmp/fstab /etc
   echo "/pagefile.sys           none            swap            sw              0 0" >> /etc/fstab
   swapon -a
fi

cd /usr/share/locales
./install-language-pack ru_RU.KOI8-R
echo 'LANG="C"' > /etc/default/locale

wget -O - $BASEURL/ipl.txt >> /etc/bash.bashrc
wget -O - $BASEURL/6off.txt >> /etc/sysctl.conf

echo
echo ==== Run dpkg-reconfigure console-setup now to make lynx on console show bash.im ====
echo

cd $PUSHD
#useradd -u 250 -g 27 -d /home/apl -c "Sasha Polonsky" -s /bin/bash -m -p '$6$Trc/XYUt$ZPYySNm19KcdUAuFuQJQ6kAI0RhZCq/4HRh2.ipfpo314NyNUkzoRXJMD2Aj8Yepn0CAskwWl5WYKRegzYKHE.' apl