From b0aae24684d1a74ecfababe4886ac369333dbe26 Mon Sep 17 00:00:00 2001
From: Lukas Kaufmann <kaufmlu1@fel.cvut.cz>
Date: Sat, 17 Feb 2024 19:35:42 +0100
Subject: [PATCH] Add Hetzner DNS scripts

Allow the use of Hetzner DNS via scripts
---
 dns_scripts/dns_add_hetzner | 48 +++++++++++++++++++++++++++++++++++++
 dns_scripts/dns_del_hetzner | 47 ++++++++++++++++++++++++++++++++++++
 2 files changed, 95 insertions(+)
 create mode 100644 dns_scripts/dns_add_hetzner
 create mode 100644 dns_scripts/dns_del_hetzner

diff --git a/dns_scripts/dns_add_hetzner b/dns_scripts/dns_add_hetzner
new file mode 100644
index 0000000..84015ad
--- /dev/null
+++ b/dns_scripts/dns_add_hetzner
@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+
+fulldomain="${1}"
+token="${2}"
+api_url="https://dns.hetzner.com/api/v1"
+api_key=${HETZNER_KEY:-''}
+zone_id=${HETZNER_ZONE_ID:-''}
+zone_name=${HETZNER_ZONE_NAME:-''}
+
+# Verify that required parameters are set
+if [[ -z "$fulldomain" ]]; then
+  echo "DNS script requires full domain name as first parameter"
+  exit 1
+fi
+if [[ -z "$token" ]]; then
+  echo "DNS script requires challenge token as second parameter"
+  exit 1
+fi
+if [[ -z "$HETZNER_KEY" ]]; then
+  echo "HETZNER_KEY variable not set"
+  exit 1
+fi
+if [ -z "$HETZNER_ZONE_ID" ] && [ -z "$HETZNER_ZONE_NAME" ] ; then
+  echo "HETZNER_ZONE_ID and HETZNER_ZONE_NAME variables not set"
+  exit 1
+fi
+
+# Get Zone ID if not set
+if [ -z "$HETZNER_ZONE_ID" ] ; then
+  zone_id=$(curl --silent -X GET "$api_url/zones?name=$HETZNER_ZONE_NAME" -H 'Auth-API-Token: '"$api_key"'' | jq -r '.zones[0].id')
+fi
+
+# domain_root=$(echo "$fulldomain" | awk -F\. '{print $(NF-1) FS $NF FS}')
+# domain=${fulldomain%.$domain_root}
+txtname="_acme-challenge.$fulldomain."
+
+echo $zone_id
+# Create TXT record
+response=$(curl --silent -X POST "$api_url/records" \
+     -H 'Content-Type: application/json' \
+     -H "Auth-API-Token: $api_key" \
+     -d '{"value": "'$token'","ttl": 60,"type": "TXT","name": "_acme-challenge.'$fulldomain'.","zone_id": "'$zone_id'"}')
+echo "$response"
+# errors=$(echo "$response" | egrep -o "\"ERRORARRAY\":\[.*\]")
+# if [[ $errors != "\"ERRORARRAY\":[]" ]]; then
+#     echo "Something went wrong: $errors"
+#     exit 1
+# fi
diff --git a/dns_scripts/dns_del_hetzner b/dns_scripts/dns_del_hetzner
new file mode 100644
index 0000000..9257612
--- /dev/null
+++ b/dns_scripts/dns_del_hetzner
@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+
+fulldomain="${1}"
+token="${2}"
+api_url="https://dns.hetzner.com/api/v1"
+api_key=${HETZNER_KEY:-''}
+zone_id=${HETZNER_ZONE_ID:-''}
+zone_name=${HETZNER_ZONE_NAME:-''}
+
+# Verify that required parameters are set
+if [[ -z "$fulldomain" ]]; then
+  echo "DNS script requires full domain name as first parameter"
+  exit 1
+fi
+if [[ -z "$token" ]]; then
+  echo "DNS script requires challenge token as second parameter"
+  exit 1
+fi
+if [[ -z "$HETZNER_KEY" ]]; then
+  echo "HETZNER_KEY variable not set"
+  exit 1
+fi
+if [ -z "$HETZNER_ZONE_ID" ] && [ -z "$HETZNER_ZONE_NAME" ] ; then
+  echo "HETZNER_ZONE_ID and HETZNER_ZONE_NAME variables not set"
+  exit 1
+fi
+
+# Get Zone ID if not set
+if [ -z "$HETZNER_ZONE_ID" ] ; then
+  zone_id=$(curl --silent -X GET "$api_url/zones?name=$HETZNER_ZONE_NAME" -H 'Auth-API-Token: '"$api_key"'' | jq -r '.zones[0].id')
+fi
+
+# domain_root=$(echo "$fulldomain" | awk -F\. '{print $(NF-1) FS $NF FS}')
+# domain=${fulldomain%.$domain_root}
+txtname="_acme-challenge.$fulldomain."
+
+
+record_id=$(curl --silent -X GET "$api_url/records?zone_id=$zone_id" -H "Auth-API-Token: $api_key" | jq -r '.records[] | select(.name=="'$txtname'") | .id')
+
+# Create TXT record
+response=$(curl --silent -X DELETE "$api_url/records/$record_id" -H "Auth-API-Token: $api_key")
+
+# errors=$(echo "$response" | egrep -o "\"ERRORARRAY\":\[.*\]")
+if [[ $response != "\"ERRORARRAY\":[]" ]]; then
+    echo "Something went wrong: $errors"
+    exit 1
+fi