ddns

DynamicDNS/script.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+
+# Cloudflare API details
+ZONE_ID="your_zone_id"
+RECORD_ID="your_record_id"
+API_TOKEN="your_cloudflare_api_token"
+RECORD_NAME="your_domain.com"
+
+# Get the current external IP
+CURRENT_IP=$(curl -s http://ipv4.icanhazip.com/)
+
+# Get the IP stored in Cloudflare
+CLOUDFLARE_IP=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/dns_records/$RECORD_ID" \
+-H "Authorization: Bearer $API_TOKEN" \
+-H "Content-Type: application/json" | jq -r '.result.content')
+
+# Compare the IPs
+if [ "$CURRENT_IP" != "$CLOUDFLARE_IP" ]; then
+  echo "IP has changed from $CLOUDFLARE_IP to $CURRENT_IP. Updating DNS record..."
+
+  # Update the Cloudflare DNS record
+  UPDATE_RESPONSE=$(curl -s -X PUT "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/dns_records/$RECORD_ID" \
+  -H "Authorization: Bearer $API_TOKEN" \
+  -H "Content-Type: application/json" \
+  --data '{"type":"A","name":"'"$RECORD_NAME"'","content":"'"$CURRENT_IP"'","ttl":120,"proxied":false}')
+
+  # Check if the update was successful
+  if echo "$UPDATE_RESPONSE" | jq -r '.success' | grep -q true; then
+    echo "DNS record updated successfully."
+  else
+    echo "Failed to update DNS record. Response from Cloudflare: $UPDATE_RESPONSE"
+  fi
+else
+  echo "IP has not changed. No update needed."
+fi