#!/usr/bin/env python3
import cgi
import html
import os
import sys
import funct

mysql_enable = funct.get_config_var('mysql', 'enable')

if mysql_enable == '1':
	mysql_user = funct.get_config_var('mysql', 'mysql_user')
	mysql_password = funct.get_config_var('mysql', 'mysql_password')
	mysql_db = funct.get_config_var('mysql', 'mysql_db')
	mysql_host = funct.get_config_var('mysql', 'mysql_host')
	from mysql.connector import errorcode
	import mysql.connector as sqltool
else:
	db = funct.get_app_dir()+"/haproxy-wi.db"
	import sqlite3 as sqltool
	
def check_db():
	if mysql_enable == '0':
		if os.path.isfile(db):
			if os.path.getsize(db) > 100:
				with open(db,'r', encoding = "ISO-8859-1") as f:
					header = f.read(100)
					if header.startswith('SQLite format 3'):
						return False
					else:
						return True
		else:
			return True
	else:
		con, cur = get_cur()
		sql = """ select id from `groups` where id='1' """
		try:
			cur.execute(sql)
		except sqltool.Error as err:
			print('<div class="alert alert-danger">')
			if err.errno == errorcode.ER_ACCESS_DENIED_ERROR:
				print("Something is wrong with your user name or password")
			elif err.errno == errorcode.ER_BAD_DB_ERROR:
				print("Database does not exist")
			else:
				print(err)
			print('</div>')
			return True
		else:
			return False
			con.close()
			
def get_cur():
	try:
		if mysql_enable == '0':
			con = sqltool.connect(db, isolation_level=None)  
		else:
			con = sqltool.connect(user=mysql_user, password=mysql_password,
									host=mysql_host,
									database=mysql_db)	
		cur = con.cursor()
	except sqltool.Error as e:
		print("An error occurred:", e)
	else:
		return con, cur
			
def create_table(**kwargs):
	con, cur = get_cur()
	if mysql_enable == '0':
		sql = """
		CREATE TABLE IF NOT EXISTS user (
			`id`	INTEGER NOT NULL,
			`username`	VARCHAR ( 64 ) UNIQUE,
			`email`	VARCHAR ( 120 ) UNIQUE,
			`password`	VARCHAR ( 128 ),
			`role`	VARCHAR ( 128 ),
			`groups`	VARCHAR ( 120 ),
			PRIMARY KEY(`id`) 
		);
		INSERT INTO user (username, email, password, role, groups) VALUES ('admin','admin@localhost','admin','admin','1'),
		 ('editor','editor@localhost','editor','editor','1'),
		 ('guest','guest@localhost','guest','guest','1');
		CREATE TABLE IF NOT EXISTS `servers` (
			`id`	INTEGER NOT NULL,
			`hostname`	VARCHAR ( 64 ) UNIQUE,
			`ip`	VARCHAR ( 64 ) UNIQUE,
			`groups`	VARCHAR ( 64 ),
			type_ip INTEGER NOT NULL DEFAULT 0,
			enable INTEGER NOT NULL DEFAULT 1,
			master INTEGER NOT NULL DEFAULT 0,
			cred INTEGER NOT NULL DEFAULT 1,
			alert INTEGER NOT NULL DEFAULT 0,
			metrics INTEGER NOT NULL DEFAULT 0,
			PRIMARY KEY(`id`) 
		);
		CREATE TABLE IF NOT EXISTS `role` (
			`id`	INTEGER NOT NULL,
			`name`	VARCHAR ( 80 ) UNIQUE,
			`description`	VARCHAR ( 255 ),
			PRIMARY KEY(`id`) 
		);
		INSERT INTO `role` (name, description) VALUES ('admin','Can do everything'),
		 ('editor','Can edit configs'),
		 ('guest','Read only access');
		
		CREATE TABLE IF NOT EXISTS `groups` (
			`id`	INTEGER NOT NULL,
			`name`	VARCHAR ( 80 ) UNIQUE,
			`description`	VARCHAR ( 255 ),
			PRIMARY KEY(`id`)
		);
		INSERT INTO `groups` (name, description) VALUES ('All','All servers enter in this group');
		CREATE TABLE IF NOT EXISTS `cred` (
			`id` integer primary key autoincrement,
			`name`	VARCHAR ( 64 ) UNIQUE,
			`enable`	INTEGER NOT NULL DEFAULT 1,
			`username`	VARCHAR ( 64 ) NOT NULL,
			`password`	VARCHAR ( 64 ) NOT NULL,
			groups INTEGER NOT NULL DEFAULT 1
		);
		CREATE TABLE IF NOT EXISTS `uuid` (`user_id` INTEGER NOT NULL, `uuid` varchar ( 64 ),`exp` timestamp default '0000-00-00 00:00:00');
		CREATE TABLE IF NOT EXISTS `token` (`user_id` INTEGER, `token` varchar(64), `exp` timestamp default '0000-00-00 00:00:00');
		CREATE TABLE IF NOT EXISTS `telegram` (`id` integer primary key autoincrement, `token` VARCHAR ( 64 ), `chanel_name` INTEGER NOT NULL DEFAULT 1, `groups` INTEGER NOT NULL DEFAULT 1);
		CREATE TABLE IF NOT EXISTS `metrics` (`serv` varchar(64), curr_con INTEGER, cur_ssl_con INTEGER, sess_rate INTEGER, max_sess_rate INTEGER,`date` timestamp default '0000-00-00 00:00:00');
		CREATE TABLE IF NOT EXISTS `settings` (`param` varchar(64) UNIQUE, value varchar(64), section varchar(64), `desc` varchar(100));
		"""
		try:
			cur.executescript(sql)
		except sqltool.Error as e:
			if kwargs.get('silent') != 1:
				if e.args[0] == 'column email is not unique' or e == "1060 (42S21): column email is not unique' ":
					print('Updating... go to version 3.0<br />')
				else:
					print("An error occurred:", e)
			return False
		else:
			return True
	else:
		try: 
			for line in open("haproxy-wi.db.sql"):
				cur.execute(line)
		except sqltool.Error as e:
			print('<div class="alert alert-danger">')
			print("An error occurred:", e)
			print('</div>')
			return False
		else:
			return True
	cur.close() 
	con.close()
		
def update_db_v_31(**kwargs):
	con, cur = get_cur()
	sql = [ "INSERT INTO settings (param, value, section, `desc`) values('time_zone', 'UTC', 'main', 'Time Zone');",
			"INSERT INTO settings (param, value, section, `desc`) values('proxy', '', 'main', 'Proxy server. Use proto://ip:port');",
			"INSERT INTO settings (param, value, section, `desc`) values('session_ttl', '5', 'main', 'Time to live users sessions. In days');",
			"INSERT INTO settings (param, value, section, `desc`) values('token_ttl', '5', 'main', 'Time to live users tokens. In days');",
			"INSERT INTO settings (param, value, section, `desc`) values('local_path_logs', '/var/log/haproxy.log', 'logs', 'Logs save locally, disable by default');",
			"INSERT INTO settings (param, value, section, `desc`) values('syslog_server_enable', '0', 'logs', 'If exist syslog server for HAproxy logs, enable this option');",
			"INSERT INTO settings (param, value, section, `desc`) values('syslog_server', '0', 'logs', 'IP address syslog server');",
			"INSERT INTO settings (param, value, section, `desc`) values('log_time_storage', '14', 'logs', 'Time of storage of logs of user activity, in days');",
			"INSERT INTO settings (param, value, section, `desc`) values('restart_command', 'systemctl restart haproxy', 'haproxy', 'Command for restart HAproxy service');",
			"INSERT INTO settings (param, value, section, `desc`) values('status_command', 'systemctl status haproxy', 'haproxy', 'Command for status check HAproxy service');",
			"INSERT INTO settings (param, value, section, `desc`) values('stats_user', 'admin', 'haproxy', 'Username for Stats web page HAproxy');",
			"INSERT INTO settings (param, value, section, `desc`) values('stats_password', 'password', 'haproxy', 'Password for Stats web page HAproxy');",
			"INSERT INTO settings (param, value, section, `desc`) values('stats_port', '8085', 'haproxy', 'Port Stats web page HAproxy');",
			"INSERT INTO settings (param, value, section, `desc`) values('stats_page', 'stats', 'haproxy', 'URI Stats web page HAproxy');",
			"INSERT INTO settings (param, value, section, `desc`) values('haproxy_dir', '/etc/haproxy/', 'haproxy', 'Path to HAProxy dir');",
			"INSERT INTO settings (param, value, section, `desc`) values('haproxy_config_path', '/etc/haproxy/haproxy.cfg', 'haproxy', 'Path to HAProxy config');",
			"INSERT INTO settings (param, value, section, `desc`) values('server_state_file', '/etc/haproxy/haproxy.state', 'haproxy', 'Path to HAProxy state file');",
			"INSERT INTO settings (param, value, section, `desc`) values('haproxy_sock', '/var/run/haproxy.sock', 'haproxy', 'Path to HAProxy sock file');",
			"INSERT INTO settings (param, value, section, `desc`) values('haproxy_sock_port', '1999', 'haproxy', 'HAProxy sock port');",
			"INSERT INTO settings (param, value, section, `desc`) values('tmp_config_path', '/tmp/', 'haproxy', 'Temp store configs, for haproxy check');",
			"INSERT INTO settings (param, value, section, `desc`) values('cert_path', '/etc/ssl/certs/', 'haproxy', 'Path to SSL dir');",
			"INSERT INTO settings (param, value, section, `desc`) values('firewall_enable', '0', 'haproxy', 'If enable this option Haproxy-wi will be configure firewalld based on config port');",
			"INSERT INTO settings (param, value, section, `desc`) values('lists_path', 'lists', 'main', 'Path to black/white lists');",
			"INSERT INTO settings (param, value, section, `desc`) values('apache_log_path', '/var/log/httpd/', 'logs', 'Path to Apache logs');" ]
	try:    
		for i in sql:
			cur.execute(i)
			con.commit()
	except sqltool.Error as e:
		if kwargs.get('silent') != 1:
			if e.args[0] == 'duplicate column name: desc' or e == "1060 (42S21): Duplicate column name 'desc' ":
				print('Updating... go to version 3.2')
			else:
				print("An error occurred:", e)
		return False
	else:
		pass
		return True
	cur.close() 
	con.close()
	
def update_db_v_3_2(**kwargs):
	con, cur = get_cur()
	sql = """CREATE TABLE IF NOT EXISTS `waf` (`server_id` INTEGER UNIQUE, metrics INTEGER); """
	try:    
		cur.execute(sql)
		con.commit()
	except sqltool.Error as e:
		if kwargs.get('silent') != 1:
			if e.args[0] == 'duplicate column name: server_id' or e == "1060 (42S21): Duplicate column name 'server_id' ":
				print('DB was updated')
			else:
				print("An error occurred:", e.args[0])
				return False
		else:
			return True
	cur.close() 
	con.close()	
	
def update_db_v_3_21(**kwargs):
	con, cur = get_cur()
	sql = """CREATE TABLE IF NOT EXISTS `waf_metrics` (`serv` varchar(64), conn INTEGER, `date`  DATETIME default '0000-00-00 00:00:00'); """
	try:    
		cur.execute(sql)
		con.commit()
	except sqltool.Error as e:
		if kwargs.get('silent') != 1:
			if e.args[0] == 'duplicate column name: token' or e == "1060 (42S21): Duplicate column name 'token' ":
				print('Updating... go to version 2.6')
			else:
				print("An error occurred:", e.args[0])
			return False
		else:
			return True
	cur.close() 
	con.close()
	
def update_db_v_3_2_3(**kwargs):
	con, cur = get_cur()
	sql = """
	ALTER TABLE `servers` ADD COLUMN port INTEGER NOT NULL DEFAULT 22;
	"""
	try:    
		cur.execute(sql)
		con.commit()
	except sqltool.Error as e:
		if kwargs.get('silent') != 1:
			if e.args[0] == 'duplicate column name: port' or e == " 1060 (42S21): Duplicate column name 'port' ":
				print('DB was update<br />')
			else:
				print("An error occurred:", e)
		return False
	else:
		print("DB was update to 3.2.3<br />")
		return True
	cur.close() 
	con.close()
			
def update_all():	
	update_db_v_31()
	update_db_v_3_2()
	update_db_v_3_21()
	update_db_v_3_2_3()
	
def update_all_silent():
	update_db_v_31(silent=1)
	update_db_v_3_2(silent=1)
	update_db_v_3_21(silent=1)
	update_db_v_3_2_3(silent=1)
	
if __name__ == "__main__":
	create_table()
	update_all()