monit-sympa/sympa/resources/tools/sympa_import.bash

#!/usr/bin/env bash

## constants

BASEDIR=$(dirname "$0")
BASECMD=$(basename "$0")
DB_NAME=sympa
DB_USER="$DB_NAME"
DB_PASS="$DB_NAME"

## functions

function usage {
	echo "$BASECMD <file.sympa>"
}

function assert_file {
	[[ $# != 1 ]] && usage && exit 1
	file="$1"
	[[ ! -f $file ]] && echo "file not found: $file" && exit 2
	true
}

function create_temp {
	echo -n "create_temp..."
	export_name=$(basename $file)
	export_tmp="/tmp/$export_name"
	mkdir "$export_tmp"
	echo OK
}

function uncompress_export_file {
	echo -n "uncompress export file..."
	tar -xf $file -C "$export_tmp"
	echo OK
}

function import_database {
	echo -n "import database $DB_NAME..."
	sudo -u postgres dropdb "$DB_NAME" 2>/dev/null
	sudo -u postgres createdb -O "$DB_USER" "$DB_NAME" 2>/dev/null
	gunzip -c "$export_tmp"/database.psql.gz | PGPASSWORD="$DB_PASS" psql -h localhost -U "$DB_USER" "$DB_NAME"
	echo OK
}

function replace_conf_entry_from_export {
	local export_conf=etc/sympa/sympa/sympa.conf
	local final_conf="/$export_conf"
	local key="$1"
	local pattern="^$key.*"
	local replacement=$(grep $pattern $export_conf)
	local ksh93=${replacement//\//\\/}
	sed -i "s/$pattern/$ksh93/" "$final_conf"
}

function import_files_etc_sympa {
	mv etc/sympa/auth.conf /etc/sympa/
	mv etc/sympa/data_structure.version /etc/sympa/

	replace_conf_entry_from_export domain
	replace_conf_entry_from_export listmaster
	replace_conf_entry_from_export lang
}

function import_files_etc_dkimkeys {
	mkdir -p /etc/dkimkeys
	mv etc/dkimkeys/* /etc/dkimkeys/
	chown sympa:sympa -R /etc/dkimkeys
}

function import_files_lib {
	rm -rf /var/lib/sympa
	mv var/lib/sympa /var/lib
}

function import_files_spool {
	rm -rf /var/spool/sympa
	mv var/spool/sympa /var/spool
}

function import_files {
	echo -n "import files..."
	files_temp="$export_tmp/files"
	mkdir "$files_temp"
	cd "$files_temp"

	tar -xf "$export_tmp/files.tar.gz"
	import_files_etc_sympa
	[[ -d etc/dkimkeys ]] && import_files_etc_dkimkeys
	import_files_lib
	import_files_spool

	echo OK
}

function import_certbot {
	if [[ -f "$export_tmp/certbot.tar" ]]; then
		echo -n "import certbot..."
		rm -rf /etc/letsencrypt
		tar -xf "$export_tmp/certbot.tar" -C /
		echo OK
	fi

	# add options-ssl-nginx.conf
	if [[ ! -f /etc/letsencrypt/options-ssl-nginx.conf ]]; then
		tee /etc/letsencrypt/options-ssl-nginx.conf <<EOF
# This file contains important security parameters. If you modify this file
# manually, Certbot will be unable to automatically provide future security
# updates. Instead, Certbot will print and log an error message with a path to
# the up-to-date file that you will need to refer to when manually updating
# this file. Contents are based on https://ssl-config.mozilla.org

ssl_session_cache shared:le_nginx_SSL:10m;
ssl_session_timeout 1440m;
ssl_session_tickets off;

ssl_protocols TLSv1.2 TLSv1.3;
ssl_prefer_server_ciphers off;

ssl_ciphers "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384";
EOF
		echo 'options-ssl-nginx.conf created!'
	else
		echo 'options-ssl-nginx.conf already there!'
	fi

	# add ssl-dhparams.pem
	if [[ ! -f /etc/letsencrypt/ssl-dhparams.pem ]]; then
		tee /etc/letsencrypt/ssl-dhparams.pem <<EOF
-----BEGIN DH PARAMETERS-----
MIIBCAKCAQEA//////////+t+FRYortKmq/cViAnPTzx2LnFg84tNpWp4TZBFGQz
+8yTnc4kmz75fS/jY2MMddj2gbICrsRhetPfHtXV/WVhJDP1H18GbtCFY2VVPe0a
87VXE15/V8k1mE8McODmi3fipona8+/och3xWKE2rec1MKzKT0g6eXq8CrGCsyT7
YdEIqUuyyOP7uWrat2DX9GgdT0Kj3jlN9K5W7edjcrsZCwenyO4KbXCeAvzhzffi
7MA0BM0oNC9hkXL+nOmFg/+OTxIy7vKBg8P+OxtMb61zO7X8vC7CIAXFjvGDfRaD
ssbzSibBsu/6iGtCOGEoXJf//////////wIBAg==
-----END DH PARAMETERS-----
EOF
		echo 'ssl-dhparams.pem created!'
	else
		echo 'ssl-dhparams.pem already there!'
	fi

	# change nginx
	if ! grep -Pq '^\s+listen 443' /etc/nginx/sites-enabled/sympa.conf; then
		tee /etc/nginx/sites-available/sympa.conf <<EOF
server {
    listen 80;
    server_name _;
    return 301 https://\$host\$request_uri;
}

server {
    listen 443;
    server_name _;

    ssl_certificate     /etc/letsencrypt/live/\$host/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/\$host/privkey.pem;  
    include /etc/letsencrypt/options-ssl-nginx.conf;
    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem;

    rewrite ^/$ /wws permanent;

    location /wws {
        include fastcgi_params;
        fastcgi_param SERVER_NAME \$host;
        fastcgi_pass  unix:/run/sympa/wwsympa.socket;
    }

    location /static-sympa {
        alias /usr/share/sympa/static_content;
    }

    location /css-sympa {
        alias /var/lib/sympa/css;
    }

    location /pictures-sympa { 
        alias /var/lib/sympa/pictures;
    }
}
EOF
		nginx -t
		systemctl reload nginx
		echo host for nginx installed successfully!
	else
		echo host SSL nginx already activated!
	fi
}

function migrate_sympa {
	echo -n "migrate sympa..."
	/usr/lib/sympa/bin/sympa.pl upgrade 2>&1
	echo OK
}

function stop_services {
	echo -n "stop services..."
	sudo systemctl stop sympa.service
	sudo systemctl stop wwsympa.socket
	echo OK
}

function start_services {
	echo -n "start services..."
	sudo systemctl start sympa.service
	sudo systemctl start wwsympa.socket
	echo OK
}

function remove_temp {
	echo -n "remove temp..."
	rm -rf "$export_tmp"
	echo OK
}

function import {
	create_temp

	uncompress_export_file
	stop_services
	import_database
	import_files
	import_certbot
	start_services
	migrate_sympa

	remove_temp
}

## main

set -Eeu
assert_file $*
import