Script for automaticly update DNS records in Beget hosting

beget-dns-update.sh

#!/bin/bash

# Script for automaticly update DNS records in Beget hosting througth Beget.API
# Documentation for Beget.API https://beget.ru/api

#User Settings
BEGET_LOGIN='username'
BEGET_PASS='passowrd'
DOMAINNAME='example.com'

#Empty value for errors
ERROR=''
MESSAGE=''

#Colors
RED='\033[0;31m'
GRN='\033[0;32m'
YEL='\033[1;33m'
NC='\033[0m' # No Color

failreport()
{
	clear
	printf "=== ${RED}FAIL!!!${NC}===\n"
	printf "${YEL}Ошибка:${NC} $ERROR\n"
	printf "${YEL}Значение:${NC}\n$MESSAGE\n"
}

HOST_IP="$(wget -O - -q icanhazip.com)"
#HOST_IP='1.1.1.1'
if [[ $HOST_IP =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]];then
	printf "IP for current machine: ${GRN}$HOST_IP${NC}\n";

	GETDNS=$(\
		curl -q "https://api.beget.ru/api/dns/getData" \
			-d login=$BEGET_LOGIN \
			-d passwd=$BEGET_PASS \
			-d input_format=json \
			-d output_format=json \
			--data-urlencode input_data='{"fqdn":"'$DOMAINNAME'"}' \
			2>/dev/null
	)

	#Check result for GETDNS request
	if [[ `echo $GETDNS | jshon -e status` == '"success"' ]];then
		#Check current DNS record
		DNSIPRECORD=$(
			echo $GETDNS |\
			jshon -e answer -e result -e records -e A -e 0 -e value |\
			sed "s/^\([\"']\)\(.*\)\1\$/\2/g"
		)
		printf "Read DNS: ${GRN}$DNSIPRECORD${NC}\n"
		
		#Check equal local and remote DNS values
		if [[ $DNSIPRECORD != $HOST_IP ]];then
			SETDNS=$(curl "https://api.beget.ru/api/dns/changeRecords" \
					-d "login=$BEGET_LOGIN" \
					-d "passwd=$BEGET_PASS" \
					-d "input_format=json" \
					-d "output_format=json" \
					--data-urlencode 'input_data=
					{
						"fqdn":"'$DOMAINNAME'",
						"records":
						{
							"A":
							[
								{
								"priority":10,
								"value":"'$HOST_IP'"
								}
							],
							"MX":
							[
								{
								"priority":10,
								"value":"mx1.beget.ru"
								},
								{
								"priority":20,
								"value":"mx2.beget.ru"
								}
							]
						}
					}'\
					2>/dev/null
				)

				#Check status of request to record
				if [[ `echo $GETDNS | jshon -e status` == '"success"' ]];then
					printf "${GRN}Success!\n"
					printf "${GRN}DNS 'A' record for $DOMAINNAME was updated to $HOST_IP${NC}\n"
				else
					ERROR='Не записать новый IP адрес'
					MESSAGE="GETDNS = ${RED}$SETDNS${NC}"
					failreport
				fi

		else
			printf "${GRN}All rights. DNS records true${NC}\n"
		fi
	else
		ERROR='Не удалось выполнить запрос Beget.API'
		MESSAGE="GETDNS = ${RED}$GETDNS${NC}"
		failreport
	fi

else
	ERROR='Не определент IP адрес данного компьютера'
	MESSAGE="HOST_IP = ${RED}$HOST_IP${NC}"
	failreport
fi