minetest-server.sh

#!/usr/bin/env bash
# Script that simplifies installing Minetest server on Fedora GNU/Linux.
# This script also provides you with options to install latest mods from Github.

MINETEST_PORT=30000

MINETEST_MOD_MOREBLOCKS=0
MINETEST_MOD_MOREORES=0
MINETEST_MOD_TORCHES=0
MINETEST_MOD_PIPEWORKS=0
MINETEST_MOD_NETHER=0
MINETEST_MOD_MESECONS=0
MINETEST_MOD_COMPUTER=0
MINETEST_MOD_MYDOORS=0
MINETEST_MOD_LIGHTNING=0

RUN_FIREWALL_RULES=0

# You need root permissions to run this script.
if [[ "${UID}" != '0' ]]; then
    echo '> You need to become root to run this script.'
    echo '> Aborting.'
    exit 1
fi

# Function that checks if required binary exists and installs it if necessary.
ENSURE_PACKAGE () {
    REQUIRED_BINARY=$(basename "${1}")
    REPO_PACKAGES="${*:2}"

    if [[ "${REQUIRED_BINARY}" != '-' ]]; then
        [[ -n "${REPO_PACKAGES}" ]] || REPO_PACKAGES="${REQUIRED_BINARY}"

        if command -v "${REQUIRED_BINARY}" 1> /dev/null; then
            REPO_PACKAGES=''
        fi
    fi

    [[ -n "${REPO_PACKAGES}" ]] || return

    if [[ "${REPO_REFRESHED}" == '0' ]]; then
        echo '> Refreshing package repository.'
        dnf check-update 1> /dev/null
        REPO_REFRESHED=1
    fi

    for REPO_PACKAGE in ${REPO_PACKAGES}
    do
        dnf install -y "${REPO_PACKAGE}"
    done
}

# Variable that keeps track if repository is already refreshed.
REPO_REFRESHED=0

MOD_PAGE_EXISTS () {
    STATUS_CODE=$(curl -s -o /dev/null -w "%{http_code}" "https://api.github.com/repos/${1}/tags")

    if [[ "${STATUS_CODE}" == '200' ]]; then
        echo '1'
    else
        echo '0'
    fi
}

GET_LATEST_RELEASE () {
    URL="$(curl -s "https://api.github.com/repos/${1}/tags" | jq .[0].tarball_url | tr -d '"')"
    DESTINATION="/tmp/$(echo "${1}" | tr '/' '-').tar.gz"
    wget "${URL}" -O "${DESTINATION}"
}

INSTALL_COMMON_MOD () {
    MOD_REPO="minetest-mods/${1}"
    INSTALLABLE=$(MOD_PAGE_EXISTS "${MOD_REPO}")

    if [[ "${INSTALLABLE}" == '1' ]]; then
        GET_LATEST_RELEASE "${MOD_REPO}"
        TARBALL=/tmp/$(echo "${MOD_REPO}" | tr '/' '-').tar.gz

        if [[ -f "${TARBALL}" ]]; then
            tar -xf "${TARBALL}" -C '/tmp'

            if [[ ! -d "/usr/share/minetest/games/minetest_game/mods/${1}" ]]; then
                mkdir -p "/usr/share/minetest/games/minetest_game/mods/${1}"
            fi

            cp -r "/tmp/$(echo "${MOD_REPO}" | tr '/' '-')-"*/* "/usr/share/minetest/games/minetest_game/mods/${1}/"
            rm -rf "/tmp/$(echo "${MOD_REPO}" | tr '/' '-')"*
        fi
    else
        echo "> Unable to install Minetest Mod: '${1}', skipping."
    fi
}

# Install packages.
ENSURE_PACKAGE 'minetest'
ENSURE_PACKAGE 'minetestserver' 'minetest-server'
ENSURE_PACKAGE 'curl'
ENSURE_PACKAGE 'wget'
ENSURE_PACKAGE 'jq'

# Install mods.
if [[ "${MINETEST_MOD_MOREBLOCKS}" == '1' ]]; then
    INSTALL_COMMON_MOD moreblocks
fi

if [[ "${MINETEST_MOD_MOREORES}" == '1' ]]; then
    INSTALL_COMMON_MOD moreores
fi

if [[ "${MINETEST_MOD_TORCHES}" == '1' ]]; then
    INSTALL_COMMON_MOD torches
fi

if [[ "${MINETEST_MOD_PIPEWORKS}" == '1' ]]; then
    INSTALL_COMMON_MOD pipeworks
fi

if [[ "${MINETEST_MOD_NETHER}" == '1' ]]; then
    INSTALL_COMMON_MOD nether
fi

if [[ "${MINETEST_MOD_MESECONS}" == '1' ]]; then
    INSTALL_COMMON_MOD mesecons
fi

if [[ "${MINETEST_MOD_COMPUTER}" == '1' ]]; then
    INSTALL_COMMON_MOD computer
fi

if [[ "${MINETEST_MOD_MYDOORS}" == '1' ]]; then
    INSTALL_COMMON_MOD mydoors
fi

if [[ "${MINETEST_MOD_LIGHTNING}" == '1' ]]; then
    INSTALL_COMMON_MOD lightning
fi

# Change Port if you specified new one.
if [[ "${MINETEST_PORT}" != '30000' ]]; then
    sed -i '/^PORT=30000/s/30000/'${MINETEST_PORT}'/' /etc/sysconfig/minetest/default.conf
fi

# Active firewall rules.
if [[ "${RUN_FIREWALL_RULES}" == '1' ]]; then
    # Make sure firewalld is installed.
    ENSURE_PACKAGE 'firewall-cmd' 'firewalld'

    systemctl enable firewalld
    systemctl restart firewalld

    firewall-cmd --add-port=${MINETEST_PORT}/udp
    firewall-cmd --runtime-to-permanent
else
    echo '> In order to complete installation you have to apply firewall rules:'
    echo "firewall-cmd --add-port=${MINETEST_PORT}/udp"
    echo 'firewall-cmd --runtime-to-permanent'
fi

# Enable Minetest service.
systemctl restart minetest@default
systemctl enable minetest@default

# Let user know that script has finished its job.
echo '> Finished.'