first commit

2026-05-07 20:53:10 +02:00
commit 7ddff5ac9b
16 changed files with 1359 additions and 0 deletions
@@ -0,0 +1,64 @@
+#!/bin/bash
+set -euo pipefail
+
+# ddns.sh
+# Updates a Hetzner Cloud zone rrset A record to the current public IPv4.
+#
+# Usage: ./ddns.sh [-t API_TOKEN] [-z ZONE_ID] [-n RRSET_NAME]
+#   -t: Hetzner API token 
+#   -z: Zone ID 
+#   -n: RRSET name 
+
+# Default values
+API_TOKEN="Your-API-Token"
+ZONE_ID="zone_ID-For_Information_look_at_the_readme"
+RRSET_NAME="Record-name"
+
+# Parse command line arguments
+while getopts ":t:z:n:" opt; do
+  case $opt in
+    t) API_TOKEN="$OPTARG";;
+    z) ZONE_ID="$OPTARG";;
+    n) RRSET_NAME="$OPTARG";;
+    \?)
+      echo "Invalid option: -$OPTARG" >&2
+      exit 1
+      ;;
+    :)
+      echo "Option -$OPTARG requires an argument." >&2
+      exit 1
+      ;;
+  esac
+done
+
+# Validate required parameters
+if [ "$API_TOKEN" = "Ihr-API-Token-hier" ]; then
+    echo "Error: API Token is required. Use -t option or set it in the script." >&2
+    exit 1
+fi
+
+# Get current public IPv4 (trim newline)
+CURRENT_IPV4=$(curl -fsS https://ipv4.icanhazip.com | tr -d '\n')
+
+if [ -z "$CURRENT_IPV4" ]; then
+		echo "Failed to determine public IPv4. Exiting." >&2
+		exit 1
+fi
+
+JSON_PAYLOAD=$(cat <<EOF
+{"records":[{"value":"$CURRENT_IPV4","comment":""}]}
+EOF
+)
+
+API_URL="https://api.hetzner.cloud/v1/zones/${ZONE_ID}/rrsets/${RRSET_NAME}/A/actions/set_records"
+
+echo "Updating A record '$RRSET_NAME' in zone id $ZONE_ID to $CURRENT_IPV4"
+
+curl -fsS -X POST \
+	-H "Authorization: Bearer $API_TOKEN" \
+	-H "Content-Type: application/json" \
+	-d "$JSON_PAYLOAD" \
+	"$API_URL" \
+	|| { echo "API request failed" >&2; exit 2; }
+
+echo "Update request sent."