trabajo-afectivo/contrib/packager.io/functions

#!/bin/bash
#
# packager.io postinstall script functions
#

function debug() {
    if [ "${DEBUG}" == "yes" ]; then
	echo "DEBUG MODE ON"
	set -ex
    fi
}

function detect_os () {
    . /etc/os-release

    if [ "${ID}" == "debian" ] || [ "${ID}" == "ubuntu" ]; then
	OS="DEBIAN"
    elif [ "${ID}" == "centos" ] || [ "${ID}" == "fedora" ] || [ "${ID}" == "rhel" ]; then
	OS="REDHAT"
    elif [ "${ID}" == "opensuse" ] || [ "${ID}" == "sles" ] || [ "${ID}" == "suse" ]; then
	OS="SUSE"
    else
	OS="UNKNOWN"
    fi

    if [ "${DEBUG}" == "yes" ]; then
	echo "OS is ${OS} based"
    fi
}

function detect_docker() {
    if [ -n "$(grep docker < /proc/1/cgroup)" ]; then
	DOCKER="yes"
    else 
	DOCKER="no"
    fi

    if [ "${DEBUG}" == "yes" ]; then
	echo "os runs in docker container = ${DOCKER}"
    fi
}

function detect_initcmd () {
    if [ -n "$(which systemctl 2> /dev/null)" ]; then
	INIT_CMD="systemctl"
    elif [ -n "$(which initctl 2> /dev/null)" ]; then
	INIT_CMD="initctl"
    else
	function sysvinit () {
	    service $2 $1
	}
	INIT_CMD="sysvinit"
    fi

    if [ "${DOCKER}" == "yes" ]; then
	INIT_CMD="initctl"
    fi

    if [ "${DEBUG}" == "yes" ]; then
	echo "INIT CMD = ${INIT_CMD}"
    fi
}


function detect_database () {
    if [ -n "$(which psql 2> /dev/null)" ]; then
	ADAPTER="postgresql"
    elif [ -n "$(which mysql 2> /dev/null)" ]; then
	ADAPTER="mysql2"
    fi

    if [ "${DEBUG}" == "yes" ]; then
	echo "Use ${ADAPTER} adapter in database.yml"
    fi
}

function detect_webserver () {
    if [ -n "$(which nginx 2> /dev/null)" ] ; then
	WEBSERVER="nginx"
	WEBSERVER_CMD="nginx"
	if [ "${OS}" == "DEBIAN" ]; then
	    WEBSERVER_CONF="/etc/nginx/sites-enabled/zammad.conf"
	elif [ "${OS}" == "REDHAT" ]; then
	    WEBSERVER_CONF="/etc/nginx/conf.d/zammad.conf"
	elif [ "${OS}" == "SUSE" ]; then
	    WEBSERVER_CONF="/etc/nginx/vhosts.d/zammad.conf"
	fi
    elif [ -n "$(which apache2 2> /dev/null)" ]; then
	WEBSERVER="apache2"
	WEBSERVER_CMD="apache2"
	if [ "${OS}" == "DEBIAN" ]; then
	    WEBSERVER_CONF="/etc/apache2/sites-enabled/zammad.conf"
	fi
    elif [ -n "$(which httpd 2> /dev/null)" ]; then
	WEBSERVER="apache2"
	WEBSERVER_CMD="httpd"
	if [ "${OS}" == "REDHAT" ]; then
	    WEBSERVER_CONF="/etc/httpd/conf.d/zammad.conf"
	elif [ "${OS}" == "SUSE" ]; then
	    WEBSERVER_CONF="/etc/apache2/vhosts.d/zammad.conf"
	fi
    fi

    if [ "${DEBUG}" == "yes" ]; then
	echo "Webserver is ${WEBSERVER_CMD}"
    fi
}

function create_initscripts () {
    echo "# (Re)creating init scripts"
    zammad scale web=${ZAMMAD_WEBS} websocket=${ZAMMAD_WEBSOCKETS} worker=${ZAMMAD_WORKERS}

    echo "# Enabling Zammad on boot"
    ${INIT_CMD} enable zammad
}

function start_zammad () {
    echo "# Starting Zammad"
    ${INIT_CMD} start zammad
}

function stop_zammad () {
    echo "# Stopping Zammad"
    ${INIT_CMD} stop zammad
}

function create_database_password () {
    DB_PASS="$(tr -dc A-Za-z0-9 < /dev/urandom | head -c10)"
}

function create_postgresql_db () {
    if [ -n "$(which postgresql-setup 2> /dev/null)" ]; then
        echo "# Preparing postgresql server"
        postgresql-setup initdb
    fi

    echo "# Creating postgresql bootstart"
    ${INIT_CMD} enable postgresql.service

    echo "# Restarting postgresql server"
    ${INIT_CMD} restart postgresql

    echo "# Creating zammad postgresql db"
    su - postgres -c "createdb -E UTF8 ${DB}"

    echo "# Creating zammad postgresql user"
    echo "CREATE USER \"${DB_USER}\" WITH PASSWORD '${DB_PASS}';" | su - postgres -c psql 

    echo "# Grant privileges to new postgresql user"
    echo "GRANT ALL PRIVILEGES ON DATABASE \"${DB}\" TO \"${DB_USER}\";" | su - postgres -c psql
}

function create_mysql_db () {
    if [ -f "${MY_CNF}" ]; then
    	MYSQL_CREDENTIALS="--defaults-file=${MY_CNF}"
    else
	echo -n "Please enter your MySQL root password:"
        read -s MYSQL_ROOT_PASS
        MYSQL_CREDENTIALS="-u root -p${MYSQL_ROOT_PASS}"
    fi

    echo "# Creating zammad mysql db"
    mysql ${MYSQL_CREDENTIALS} -e "CREATE DATABASE ${DB} DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;"

    echo "# Creating zammad mysql user"
    mysql ${MYSQL_CREDENTIALS} -e "CREATE USER \"${DB_USER}\"@\"${DB_HOST}\" IDENTIFIED BY \"${DB_PASS}\";"

    echo "# Grant privileges to new mysql user"
    mysql ${MYSQL_CREDENTIALS} -e "GRANT ALL PRIVILEGES ON ${DB}.* TO \"${DB_USER}\"@\"${DB_HOST}\"; FLUSH PRIVILEGES;"
}

function update_database_yml () {
    if [ "${OS}" == "REDHAT" ] || [ "${OS}" == "SUSE" ]; then
	if [ "${ADAPTER}" == "postgresql" ]; then
	    DB_PASS=""
	fi
    fi

    echo "# Updating database.yml"
    sed -e "s/.*adapter:.*/  adapter: ${ADAPTER}/" \
	-e "s/.*username:.*/  username: ${DB_USER}/" \
        -e "s/.*password:.*/  password: ${DB_PASS}/" \
        -e "s/.*database:.*/  database: ${DB}/" < ${ZAMMAD_DIR}/config/database.yml.pkgr > ${ZAMMAD_DIR}/config/database.yml
}

function initialise_database () {
    zammad run rake db:migrate
    zammad run rake db:seed
}

function update_database () {
    echo "# database.yml found. Updating db..."
    zammad run rake db:migrate
}

function create_webserver_config () {
    if [ "${OS}" == "DEBIAN" ]; then
	test -f /etc/${WEBSERVER}/sites-available/zammad.conf || cp ${ZAMMAD_DIR}/contrib/${WEBSERVER}/zammad.conf /etc/${WEBSERVER}/sites-available/zammad.conf
	test -h ${WEBSERVER_CONF} || ln -s /etc/${WEBSERVER}/sites-available/zammad.conf ${WEBSERVER_CONF}
	if [ "${WEBSERVER}" == "apache2" ]; then
	    a2enmod proxy
	    a2enmod proxy_http
	    a2enmod proxy_wstunnel
	fi
    else
	test -f ${WEBSERVER_CONF} || cp ${ZAMMAD_DIR}/contrib/${WEBSERVER}/zammad.conf ${WEBSERVER_CONF}
    fi

    echo "# Creating webserver bootstart"
    ${INIT_CMD} enable ${WEBSERVER_CMD}

    echo "# Restarting webserver ${WEBSERVER_CMD}"
    ${INIT_CMD} restart ${WEBSERVER_CMD}
}

function final_message () {
    echo -e "####################################################################################"
    echo -e "\nAdd your FQDN to servername directive in ${WEBSERVER_CONF}"
    echo -e "and restart your webserver if you're not testing locally"
    echo -e "or open http://localhost/ in your browser to start using Zammad.\n"
    if [ "${OS}" == "REDHAT" ]; then
	echo -e "\n Remember to enable selinux and firewall rules!\n"
	echo -e "Use the follwing commands:"
	echo -e "	setsebool httpd_can_network_connect on -P"
	echo -e "	firewall-cmd --zone=public --add-service=http --permanent"
	echo -e "	firewall-cmd --zone=public --add-service=https --permanent"
	echo -e "	firewall-cmd --reload\n"
    fi
    echo -e "####################################################################################"
}