services: add script to update cloudflare dns records

services/.gitignore

@@ -0,0 +1 @@
+**/.var

services/cloudflare_update_dns

@@ -0,0 +1,51 @@
+#! /usr/bin/env bash
+
+set -euo pipefail
+
+mkdir -p .var
+
+ZONE_ID="$(cat .var/zone_id)"
+DNS_RECORD="$(cat .var/dns_record)"
+CACHED_PUBLIC_IP="$(cat .var/cached_public_ip)"
+AUTHORIZATION="$(cat .var/bearer)"
+
+IP_URL="ifconfig.me/ip"
+SEND_TELEGRAM="$(pwd)/send_telegram"
+
+function info() {
+	echo "$(date --iso-8601=minutes) CLOUDFLARE_DNS_UPDATE [INFO]: ${*}"
+}
+function error() {
+	echo "$(date --iso-8601=minutes) CLOUDFLARE_DNS_UPDATE [ERROR]: ${*}"
+}
+
+
+function check_new_ip() {
+	local new_ip
+	new_ip="$(curl -s ${IP_URL})"
+	if [[ "${new_ip}" == "${CACHED_PUBLIC_IP}" ]]; then
+		info "Public IP has not changed from ${new_ip}. Exiting..."
+		exit 0;
+	else
+		info "Public IP has changed from ${CACHED_PUBLIC_IP} to ${new_ip}. Updating records..."
+    "${SEND_TELEGRAM}" "Public IP has changed from ${CACHED_PUBLIC_IP} to ${new_ip}. Updating records..."
+    CACHED_PUBLIC_IP="${new_ip}"
+    echo "${new_ip}" > .var/cached_public_ip
+	fi
+}
+
+check_new_ip
+
+curl --request PATCH \
+  --url "https://api.cloudflare.com/client/v4/zones/${ZONE_ID}/dns_records/${DNS_RECORD}" \
+  --header 'Content-Type: application/json' \
+  --header 'X-Auth-Email: ' \
+  --data '{
+  "content": "'${CACHED_PUBLIC_IP}'",
+  "name": "tylencloud.com",
+  "proxied": false,
+  "type": "A",
+  "comment": "Main Record",
+  "ttl": 3600
+}' \
+-H "Authorization: Bearer ${AUTHORIZATION}";

services/send_telegram

@@ -7,8 +7,8 @@ if [ "$#" -ne 1 ]; then
 fi
 
 # Set the API token and chat ID
-API_TOKEN="7074090911:AAEoazbp1LcqRE7qq9Jf71sXpQaQOz-D0fc"
+API_TOKEN="$(cat .var/telegram_bot_api_token)"
-CHAT_ID="1622364607"
+CHAT_ID="$(cat .var/telegram_bot_chat_id)"
 
 MESSAGE="$1"