#!/bin/bash
# ============LICENSE_START=======================================================
#  Copyright (C) 2020 The Nordix Foundation. All rights reserved.
# ================================================================================
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# SPDX-License-Identifier: Apache-2.0
# ============LICENSE_END=========================================================
set -ex

sudo apt-get update
sudo apt-get install -y unzip

# INSTALL JAVA
sudo apt-get install -y openjdk-11-jdk
java -version

# INSTALL DOCKER
sudo DEBIAN_FRONTEND=noninteractive apt-get install -y \
    apt-transport-https \
    ca-certificates \
    curl \
    gnupg-agent \
    software-properties-common
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo add-apt-repository \
   "deb [arch=amd64] https://download.docker.com/linux/ubuntu \
   $(lsb_release -cs) \
   stable"
sudo apt-get update
sudo apt-get install -y docker-ce=5:19.03.12~3-0~ubuntu-bionic docker-ce-cli=5:19.03.12~3-0~ubuntu-bionic containerd.io
docker --version

sudo systemctl enable docker
sudo systemctl start docker

# If you have a issue with Let's Encrypt certificate when cloning repo due to DST Root CA X3 Expiration:
# https://letsencrypt.org/docs/dst-root-ca-x3-expiration-september-2021/
# remove outdated certificate from system
sudo rm -rf /usr/share/ca-certificates/mozilla/DST_Root_CA_X3.crt
# update ca-certificates
sudo update-ca-certificates --fresh --verbose

# CREATE JENKINS USER
# Crete homedir, add to sudo group, add entry in /etc/passwd
sudo useradd -G sudo,docker -d /home/jenkins -m -c "jenkins user" -s /bin/bash jenkins
# Create slave root directory
sudo mkdir -p /home/jenkins/nordix/slave_root
sudo chown -R jenkins:jenkins /home/jenkins/nordix/slave_root
sudo chmod -R 755 /home/jenkins/nordix/slave_root
# Modify sudoers - disable env_reset, !requiretty and passwordless sudo
sudo sed -i "s/^Defaults.*env_reset/#&\nDefaults:jenkins  \!requiretty/" /etc/sudoers
sudo sed -i "s/^%sudo.*ALL/%sudo   ALL=(ALL:ALL)   NOPASSWD: ALL/" /etc/sudoers
# Disable ssh password login, enable ssh with keys for jenkins user
sudo bash -c "echo PasswordAuthentication no >> /etc/ssh/sshd_config"
sudo bash -c "echo PubkeyAuthentication yes >> /etc/ssh/sshd_config"
sudo bash -c "echo AllowUsers jenkins >> /etc/ssh/sshd_config"
sudo systemctl restart sshd

# get cloud-init script in place so we can place the keys into ~jenkins/.ssh
sudo bash -c 'cat << EOF > /var/lib/cloud/scripts/per-instance/copykeystojenkins.sh
#!/bin/bash
sudo mkdir -p /home/jenkins/.ssh
sudo cat /home/ubuntu/.ssh/authorized_keys >> /home/jenkins/.ssh/authorized_keys
sudo chown -R jenkins:jenkins /home/jenkins/.ssh
sudo chmod -R go-rwx /home/jenkins/.ssh
sudo userdel -f -r ubuntu
EOF'
sudo chmod +x /var/lib/cloud/scripts/per-instance/copykeystojenkins.sh