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Add a new Hetzner DDNS provider using the Hetzner Cloud API (api.hetzner.cloud) with Bearer token authentication. Configuration guide: * set [domain] to domain * set [username] to subdomain (without domain) * set [password] to Bearer API key Signed-off-by: Christopher Obbard <obbardc@gmail.com>
71 lines
2.0 KiB
Bash
Executable File
71 lines
2.0 KiB
Bash
Executable File
#!/bin/sh
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#
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# SPDX-License-Identifier: GPL-3.0-or-later
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#
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# Script to update Hetzner DNS Records using the Cloud API (api.hetzner.cloud)
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#
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# 2026 Christopher Obbard <obbardc@gmail.com>
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#
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# Options passed from /etc/config/ddns:
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# Domain - the zone name in Hetzner Console (e.g. `example.com`)
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# Username - the RRset name within the zone (e.g. `www`)
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# Password - Hetzner Console API token (Bearer token)
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#
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# Reference: https://docs.hetzner.cloud/reference/cloud#tag/zone-rrset-actions/set_zone_rrset_records
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# Hetzner API base URL
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__API="https://api.hetzner.cloud/v1"
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# Hetzner API requires a comment. An empty string is fine.
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comment=""
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. /usr/share/libubox/jshn.sh
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# Check CURL exists
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[ -z "$CURL" ] || [ -z "$CURL_SSL" ] && {
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write_log 14 "Hetzner Cloud DDNS script requires cURL with SSL support"
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return 1
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}
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# Check options
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[ -z "$username" ] && write_log 14 "Hetzner Cloud DDNS: 'username' (rrset name) not set" && return 1
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[ -z "$password" ] && write_log 14 "Hetzner Cloud DDNS: 'password' (API Token) not set" && return 1
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[ -z "$domain" ] && write_log 14 "Hetzner Cloud DDNS: 'domain' not set (Zone name)" && return 1
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[ "$use_ipv6" -eq 1 ] && type="AAAA" || type="A"
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__TYPE="A"
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[ "$use_ipv6" -ne 0 ] && __TYPE="AAAA"
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# Create JSON payload for set_records API call
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# Payload:
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# { "records": [ { "value": "<ip>", "comment": "" } ] }
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json_init
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json_add_array "records"
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json_add_object
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json_add_string "value" "$__IP"
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json_add_string "comment" "$comment"
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json_close_object
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json_close_array
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__URL="${__API}/zones/${domain}/rrsets/${username}/${__TYPE}/actions/set_records"
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__STATUS=$(curl -Ss -X POST "$__URL" \
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-H "Authorization: Bearer ${password}" \
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-H "Content-Type: application/json" \
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-d "$(json_dump)" \
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-w "%{http_code}\n" -o "$DATFILE" 2>"$ERRFILE")
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if [ $? -ne 0 ]; then
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write_log 14 "Curl failed (set_records): $(cat "$ERRFILE")"
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return 1
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fi
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# Treat any 2xx as success; otherwise error.
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case "$__STATUS" in
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200|201|202) return 0 ;;
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*)
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write_log 14 "Curl failed (set_records): $__STATUS\nresponse body: $(cat "$DATFILE")"
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return 1
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;;
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esac
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