DNS_Tools/Dynamic_DNS/Dynamic_DNS_Cloudflare/update_cloudflare_ip.sh

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#!/bin/bash
# Exit if any command fails
set -e
# Directory containing all .env config files
ENV_DIR="./zones"
# Fetch current IP from Mullvad
echo "[*] Fetching IP info from Mullvad..."
IP_INFO=$(curl -s https://ipv4.am.i.mullvad.net/json)
IP=$(echo "$IP_INFO" | jq -r '.ip')
if [[ -z "$IP" ]]; then
echo "[!] Failed to extract IP address."
exit 1
fi
echo "[*] Current public IP is: $IP"
echo
# Loop through all .env files in ENV_DIR
for ENV_FILE in "$ENV_DIR"/*.env; do
echo "[*] Processing config: $ENV_FILE"
# Load environment variables
set -a
source "$ENV_FILE"
set +a
# Check required variables
if [[ -z "$ZONE_ID" || -z "$DNS_RECORD_ID" || -z "$CLOUDFLARE_EMAIL" || -z "$CLOUDFLARE_API_KEY" || -z "$DNS_NAME" ]]; then
echo "[!] Missing required variables in $ENV_FILE"
continue
fi
# Make the API request
echo "[*] Updating Cloudflare record for $DNS_NAME..."
UPDATE_RESPONSE=$(curl -s -X PUT "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/dns_records/$DNS_RECORD_ID" \
-H "Content-Type: application/json" \
-H "X-Auth-Email: $CLOUDFLARE_EMAIL" \
-H "X-Auth-Key: $CLOUDFLARE_API_KEY" \
-d '{
"name": "'$DNS_NAME'",
"ttl": 3600,
"type": "A",
"comment": "Domain verification record",
"content": "'$IP'",
"proxied": true
}')
SUCCESS=$(echo "$UPDATE_RESPONSE" | jq -r '.success')
if [[ "$SUCCESS" == "true" ]]; then
echo "[+] $DNS_NAME updated successfully!"
else
echo "[!] Failed to update $DNS_NAME."
echo "Cloudflare response:"
echo "$UPDATE_RESPONSE"
fi
echo
done