#!/bin/bash

set -e

SSHD_LISTEN_ADDRESS=127.0.0.1

SSHD_PORT=2222

SSHD_FILE=/etc/ssh/sshd_config

SUDOERS_FILE=/etc/sudoers

# 0. update package lists

sudo apt-get update

# 0.1. reinstall sshd (workaround for initial version of WSL)

sudo apt remove -y --purge openssh-server

sudo apt install -y openssh-server

# 0.2. install basic dependencies

sudo apt install -y cmake ninja-build gcc clang gdb valgrind build-essential

# 1.1. configure sshd

sudo cp $SSHD_FILE ${SSHD_FILE}.`date '+%Y-%m-%d_%H-%M-%S'`.back

sudo sed -i '/^Port/ d' $SSHD_FILE

sudo sed -i '/^ListenAddress/ d' $SSHD_FILE

sudo sed -i '/^UsePrivilegeSeparation/ d' $SSHD_FILE

sudo sed -i '/^PasswordAuthentication/ d' $SSHD_FILE

echo "# configured by CLion" | sudo tee -a $SSHD_FILE

echo "ListenAddress ${SSHD_LISTEN_ADDRESS}" | sudo tee -a $SSHD_FILE

echo "Port ${SSHD_PORT}" | sudo tee -a $SSHD_FILE

echo "UsePrivilegeSeparation no" | sudo tee -a $SSHD_FILE

echo "PasswordAuthentication yes" | sudo tee -a $SSHD_FILE

# 1.2. apply new settings

sudo service ssh --full-restart

# 2. autostart: run sshd

sed -i '/^sudo service ssh --full-restart/ d' ~/.bashrc

echo "%sudo ALL=(ALL) NOPASSWD: /usr/sbin/service ssh --full-restart" | sudo tee -a $SUDOERS_FILE

cat << 'EOF' >> ~/.bashrc

sshd_status=$(service ssh status)

if [[ $sshd_status = *"is not running"* ]]; then

sudo service ssh --full-restart

fi

EOF

# summary: SSHD config info

echo

echo "SSH server parameters ($SSHD_FILE):"

echo "ListenAddress ${SSHD_LISTEN_ADDRESS}"

echo "Port ${SSHD_PORT}"

echo "UsePrivilegeSeparation no"

echo "PasswordAuthentication yes"