modified: netbox_dns_bridge/__init__.py

modified: netbox_dns_bridge/catalog_zone_manager.py Fix wrong import in previous version and slight change to meachanism to create catz member identifier.
2026-07-15 17:48:49 +02:00 · 2026-07-14 17:51:37 +02:00 · 2026-07-14 14:53:12 +02:00 · 2026-07-13 13:41:29 +02:00 · 2026-07-11 02:46:17 +02:00 · 2026-07-11 01:44:21 +02:00
35 changed files with 1604 additions and 1823 deletions
@@ -0,0 +1,2 @@
 [flake8]
 max-line-length = 100
@@ -1,4 +1,6 @@
 src/netbox_plugin_bind_provisioner.egg-info
 dist/
 build/
 __pycache__
 venv/
 .venv/
 netbox_plugin_dns_bridge.egg-info/
@@ -0,0 +1,12 @@
 ## 1.0.7 - 2026-03-02
 README Change - Moving private keys to global scope since Bind 9.20 view scoped keys have become unreliable and sometimes wouldnt match.
 ## 1.0.8 - 2026-03-12
 - Change License to MIT to match the netbox-plugin-dns License. This project rests on the netbox-plugin-dns so a matching
  license makes more sense.
 - Renaming Project from Netbox Plugin Bind Provisioner to Netbox DNS Bridge as new code will be contributed that allows
  data to flow in both directions (Dynamic Updates), not just out of Netbox DNS.
 ## 1.5.0 - 2026-04-08
 - Change to versioning scheme - Now matches the major and minor version number to the one of netbox-plugin-dns. Only the minor sub version
  will be used to track incremental changes to this plugin.
@@ -1,339 +1,18 @@
-                    GNU GENERAL PUBLIC LICENSE
+MIT License
                       Version 2, June 1991
- Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+Copyright (c) 2025-2026 Sven Luethi
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.
-                            Preamble
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-  The licenses for most software are designed to take away your
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-freedom to share and change it.  By contrast, the GNU General Public
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 License is intended to guarantee your freedom to share and change free
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@@ -1 +1 @@
-recursive-include netbox_bind_provisioner *.py
+recursive-include netbox_dns_bridge *.py
@@ -1,32 +1,43 @@
-# Netbox Bind Provisioner
+# NetBox DNS Bridge
-A NetBox plugin that implements a lightweight DNS server to automate the
+
-provisioning and configuration of a BIND9 server based on DNS records
+The NetBox DNS Bridge plugin extends [NetBox DNS](https://github.com/sys4/netbox-plugin-dns) by
-maintained in NetBox. (netbox-plugin-dns).
+embedding a lightweight DNS server directly within NetBox. It acts as a bridge between NetBox DNS
 and your existing DNS infrastructure, leveraging native DNS mechanisms for seamless integration.
 These include zone transfers (RFC 5936), catalog zones (RFC 9432), and notifying clients about zone
 changes (RFC 1996).
 <a href="https://pypi.org/project/netbox-plugin-dns-bridge/"><img src="https://img.shields.io/pypi/v/netbox-plugin-dns-bridge" alt="PyPi"></a>
 <a href="https://github.com/suraxius/netbox-plugin-dns-bridge/stargazers"><img src="https://img.shields.io/github/stars/suraxius/netbox-plugin-dns-bridge?style=flat" alt="Stars Badge"></a>
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 <a href="https://github.com/suraxius/netbox-plugin-dns-bridge/blob/master/LICENSE"><img src="https://img.shields.io/github/license/suraxius/netbox-plugin-dns-bridge?color=2b9348" alt="License Badge"></a>
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 ## Plugin configuration
-The plugin has been reworked: instead of exporting zone files, it now provides
+While providing Zone transfers via AXFR, the Server also exposes specialized catalog zones that BIND
-a minimal DNS server that is fed directly from NetBox’s DNS data. This server
+and other RFC9432 compliant DNS Servers use to automatically discover newly created zones and remove
-also exposes specialized catalog zones that BIND uses to automatically discover
+deleted ones. The plugin supports views and basic DNS security via TSIG.
 newly created zones and remove deleted ones. The plugin supports BIND views and
 basic DNS security via TSIG.
-The plugin exposes one catalog zone per view. Each catalog zone is available
+The plugin exposes one catalog zone per view. Each catalog zone is made available under the special
-under the special zone name **"catz"** and can be queried through the built-in
+zone name **"catz"** and addtionally under **"[viewname].catz"** and may be queried through the
-DNS server like any other zone.
+built-in DNS server just like any other dns zone.
-For proper operation, each view requires an installed TSIG key, and the
+For proper operation, each view requires an installed TSIG key, and the `dns-transfer-endpoint` must
-`bind-transfer-endpoint` must be running as a separate background service using
+be running as a separate background service using the `manage.py` command. Note that DNSSEC support
-the `manage.py` command. Note that DNSSEC support will be added once BIND9
+will be added once BIND9 provides a mechanism to configure it through the Catalog Zones system.
 provides a mechanism to configure it through the Catalog Zones system.
-To start the service:
+To start the transfer endpoint service in the foreground:
 ```
-manage.py bind-transfer-endpoint --port 5354
+manage.py dns-transfer-endpoint --port 5354
 ```
-
+This process needs to be scheduled as a background service for the built-in DNS Server to work
-When configuring the plugin, you need to provide a path on the filesystem for
+correctly. For Linux users with Systemd (Ubuntu, etc), Matt Kollross provides a startup unit and
-this file where the plugin can create and manage it. Please do not update it by
+instructions [here](docs/install-systemd-service.md).
 hand or remove it unless you know what you are doing.
 ### Service parameters
 Parameter | Description
@@ -35,23 +46,75 @@ Parameter | Description
 --address | IP of interface to bind to (defaults to 0.0.0.0)
 ### Plugin settings
-Setting             | Description
+Plugin settings should be configured under `PLUGINS_CONFIG` in `netbox_dns_bridge`:
--------------------| ---------------------------------------------------------
+```
-catalog_serial_file | !!!NO LONGER USED!!! Replaced by DB entry.
+PLUGINS_CONFIG = {
-tsig_keys           | Maps a TSIG Key to be used for each view.
+    'netbox_dns_bridge': {
        ...
        ...
    }
 }
 ```
 #### TSIG Authentication
 Following sets the TSIG key that allows clients to query the transfer endpoint and also they key to
 be used to sign NOTIFY messages to clients on zone changes. Each view should have its own unique
 key to allow the plugin to identify the view the client is trying to access. Re-using the key for
 multiple views yields unpredicted behavior.
 ```
 'tsig_keys': {
    'the-view-name-here': {
        'keyname': 'the-tsig-key-name-here',
        'algorithm': 'hmac-sha256',
        'secret': 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'
    }
 }
 ```
 #### NOTIFY
 Clients may be notified of zone changes using the NOTIFY mechanism defined in RFC 1996.
 When enabled, the zone transfer endpoint keeps track of any client that successfully queried the
 endpoint. Once a zone has changed, NetBox informs each client about the zone changed so that the
 client can request a new zone transfer.
 Note that this feature uses NetBox's background job system to schedule the messages asynchronously.
 In order to work, you need at least one `rq-worker` service running in the background to handle
 the queued jobs.
 ##### NOTIFY Settings
 ```
 'notify_clients': True
 ```
 This enables the NOTIFY system. Defaults to False
 ```
 'notify_client_alive_threshold_hours': 24
 ```
 This sets how long a client is considred "alive" after it last queried the transfer endpoint. 
 Once the client has failed to check in for this amout of time, it is automatically removed from the
 list of clients to be notified on zone changes. Default is 24 hours.
 ```
 'notify_over_tcp': True
 ```
 Switch to using TCP instead of UDP. Defaults to False
 ## Plugin compatibility
 This plugin extends the netbox-plugin-dns plugin. As such the versioning was changed to match the
 one of netbox-plugin-dns more closely. To guarantee compatability, ensure that the major and minor
 version match between both plugins. For example, when using netbox-plugin-dns `v1.5.5` install
 netbox-plugin-dns-bridge `v1.5.x`.
 ## Installation guide
-This setup provisions a BIND9 server directly with DNS data from NetBox.
+This setup provisions a BIND9 server directly with DNS data from NetBox. BIND9 can optionally run on
-BIND9 can optionally run on a separate server. If so, any reference to
+a separate server. If so, any reference to 127.0.0.1 in step 6 must be replaced with the IP address
-127.0.0.1 in step 6 must be replaced with the IP address of the NetBox host.
+of the NetBox host. TCP and UDP traffic from the BIND9 server to the NetBox host must be allowed on
 TCP and UDP traffic from the BIND9 server to the NetBox host must be allowed on
 port 5354 (or the port you have configured).
 This guide assumes:
- Netbox has been installed under /opt/netbox
+- NetBox has been installed under /opt/netbox
- Bind9 is installed on the same host as Netbox
+- Bind9 is installed on the same host as NetBox
- The Netbox DNS Plugin netbox-plugin-dns is installed
+- The NetBox DNS Plugin netbox-plugin-dns is installed
- The following dns views exist in Netbox DNS:
+- The following dns views exist in NetBox DNS:
    - `public` (the default)
    - `private`
@@ -62,7 +125,7 @@ This guide assumes:
 2. Adding required package
    ```
    cd netbox
-    echo netbox-plugin-bind-provisioner >> local_requirements.txt
+    echo netbox-plugin-dns-bridge >> local_requirements.txt
    . venv/bin/activate
    pip install -r local_requirements.txt
    ```
@@ -74,10 +137,10 @@ This guide assumes:
    ```
    to
    ```
-    PLUGINS = ['netbox_dns', 'netbox_plugin_bind_provisioner']
+    PLUGINS = ['netbox_dns', 'netbox_dns_bridge']
    ```
-    Configure the Bind Exporter Plugin using the PLUGINS_CONFIG dictionary.
+    Configure the DNS Bridge Plugin using the PLUGINS_CONFIG dictionary.
    Change
    ```
    PLUGINS_CONFIG = {}
@@ -85,7 +148,7 @@ This guide assumes:
    to
    ```
    PLUGINS_CONFIG = {
-        "netbox_plugin_bind_provisioner": {
+        "netbox_dns_bridge": {
            "tsig_keys": {
                "public": {
                    "keyname":   "public_view_key",
@@ -104,33 +167,31 @@ This guide assumes:
    Note that the tsig-key attributes keyname, algorithm and secret form a
    dictionary in following python structure path:
    ```
-    PLUGINS_CONFIG.netbox_plugin_bind_provisioner.tsig_keys.<dns_view_name>
+    PLUGINS_CONFIG.netbox_dns_bridge.tsig_keys.<dns_view_name>
    ```
    This allows the plugin to map requests to the right dns view using the tsig
    signature from each request.
 4. Run migrations
    ```
-    python3 netbox/manage.py migrate
+    manage.py migrate
    ```
 5. Start listener
    This step runs the DNS endpoint used by bind to configure itself. You may want
    to write a service wrapper that runs this in the background.
    A guide for setting up a systemd service on Ubuntu is provided by Matt
    Kollross [here](docs/install-systemd-service.md). Dont forget to activate
    the venv if you do decide to run this service in the background.
-    Note that `--port 5354` is optional. The listener will bind this port
+    This step runs the DNS endpoint used by bind to configure itself. You may want to write a
-    by default.
+    service wrapper that runs this in the background. A guide for setting up a systemd service on
    Ubuntu is provided by Matt Kollross [here](docs/install-systemd-service.md). Dont forget to
    activate the venv if you do decide to run this service in the background.
    Note that `--port 5354` is optional. The listener will bind this port by default.
    ```
-    python3 netbox/manage.py bind-transfer-endpoint --port 5354
+    manage.py dns-transfer-endpoint --port 5354
    ```
-6. Configuring a Bind9 to interact with Netbox via the bind-transfer-endpoint
+6. Configuring a Bind9 to interact with NetBox via the dns-transfer-endpoint endpoint. Note that its
-   endpoint. Note that its not possible to give all the correct details of the
+    not possible to give all the correct details of the `options` block as it is heavily dependent
-   `options` block as it is heavily dependent on the Operating System used.
+    on the Operating System used. Please dont forget to adjust as required.
   Please dont forget to adjust as required.
    ```
    ########## OPTIONS ##########
@@ -158,15 +219,23 @@ This guide assumes:
        192.168.0.0/16;
    };
-    ########## ZONES ##########
+    ######## TSIG Keys ########
    view "public" {
        key "public_view_key" {
            algorithm hmac-sha256;
            secret "base64-encoded-secret";
        };
        key "private_view_key" {
            algorithm hmac-sha256;
            secret "base64-encoded-secret";
        };
    ###########################
    ########## ZONES ##########
    view "public" {
        match-clients { public; };
        allow-notify { key "public_view_key"; };
        catalog-zones {
            zone "catz"
@@ -184,12 +253,8 @@ This guide assumes:
    };
    view "private" {
        key "private_view_key" {
            algorithm hmac-sha256;
            secret "base64-encoded-secret";
        };
        match-clients { private; };
        allow-notify { key "private_view_key"; };
        catalog-zones {
            zone "catz"
@@ -209,3 +274,4 @@ This guide assumes:
 7. Restart bind - Done
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@@ -0,0 +1,4 @@
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@@ -1,9 +1,9 @@
 1. Create System Unit file
    ```
-    cat <<EOF > /etc/systemd/system/netbox-bind-endpoint.service
+    cat <<EOF > /etc/systemd/system/netbox-dns-endpoint.service
    [Unit]
-    Description=Netbox BIND Catalog Endpoing
+    Description=Netbox DNS transfer endpoint
-    Documentation=https://github.com/Suraxius/netbox-plugin-bind-provisioner
+    Documentation=https://github.com/Suraxius/netbox-plugin-dns-bridge
    After=network-online.target
    Wants=network-online.target
@@ -15,7 +15,7 @@
    PIDFile=/var/tmp/netbox.pid
    WorkingDirectory=/opt/netbox
-    ExecStart=/opt/netbox/venv/bin/python3  /opt/netbox/netbox/manage.py bind-transfer-endpoint --port 5354
+    ExecStart=/opt/netbox/venv/bin/python3  /opt/netbox/netbox/manage.py dns-transfer-endpoint --address 0.0.0.0 --port 5354
    Restart=on-failure
    RestartSec=30
@@ -28,7 +28,7 @@
 2. Enable and start the service
    ```
-    systemctl enable netbox-bind-endpoint
+    systemctl enable netbox-dns-endpoint
-    systemctl start netbox-bind-endpoint
+    systemctl start netbox-dns-endpoint
-    systemctl status netbox-bind-endpoint
+    systemctl status netbox-dns-endpoint
    ```
@@ -0,0 +1,29 @@
 from netbox.plugins import PluginConfig
 from django.conf import settings
 from .logger import get_logger
 __version__ = "1.5.6"
 LOGGER = get_logger(__name__)
 class DNSBridgeConfig(PluginConfig):
    name = "netbox_dns_bridge"
    verbose_name = "Netbox DNS Bridge"
    description = ""
    version = __version__
    author = "Sven Luethi"
    author_email = "dev@sven.luethi.co"
    base_url = "dns-bridge"
    def ready(self):
        self.settings = settings.PLUGINS_CONFIG.get(self.name, None)
        if not self.settings:
            raise RuntimeError(
                f"{self.name}: Plugin {self.verbose_name} failed to initialize due to missing settings. Terminating Netbox."
            )
        from . import signals
 config = DNSBridgeConfig
@@ -0,0 +1,179 @@
 import dns.name
 import dns.zone
 import dns.rdatatype
 import dns.rdataclass
 from .logger import get_logger
 from netbox_dns.models import Zone as NBZone
 from netbox_dns_bridge.models import IntegerKeyValueSetting, CatalogZoneMemberIdentifier
 from uuid import uuid4
 from base64 import b32encode
 from django.db import transaction, close_old_connections, OperationalError
 LOGGER = get_logger(__name__)
 def increment_soa_serial() -> int:
    with transaction.atomic():
        try:
            soa_serial_obj = (
                IntegerKeyValueSetting.objects.select_for_update().get_or_create(
                    key="catalog-zone-soa-serial",
                    defaults={"value": 1},
                )
            )
            new_soa_serial = soa_serial_obj.value + 1
            if new_soa_serial > 0xFFFFFFFF:
                LOGGER.warning(
                    f"Catalog serial {soa_serial_obj.value} reached max — wrapping back to 1"
                )
                new_soa_serial = 1
            soa_serial_obj.value = new_soa_serial
            soa_serial_obj.save()
            soa_serial_obj.refresh_from_db()
            LOGGER.debug(
                f"Catalog zone SOA serial number is now {soa_serial_obj.value}"
            )
            return soa_serial_obj.value
        except OperationalError as e:
            LOGGER.error(
                f"ERROR: Failed to increment the Catalog Zone's SOA serial: {e}"
            )
            close_old_connections()
 def create_zone(name, view_name) -> dns.zone.Zone:
    # Zone origin
    origin = dns.name.from_text(name, dns.name.root)
    # Create a new empty zone
    zone = dns.zone.Zone(origin)
    zone.rdclass = dns.rdataclass.IN
    try:
        # get zones from netbox
        nb_zones = NBZone.objects.filter(
            view__name=view_name, active=True
        ).select_related("catz_identifier")
        ptr_base = dns.name.from_text("zones", origin)
        for nb_zone in nb_zones:
            ttl = 0
            qname = dns.name.from_text(nb_zone.name, dns.name.root)
            # Create PTR record
            try:
                catz_identifier = nb_zone.catz_identifier
            except NBZone.catz_identifier.RelatedObjectDoesNotExist:
                catz_identifier = CatalogZoneMemberIdentifier.objects.create(
                    zone=nb_zone, name=_generate_member_identifier()
                )
            p_name = catz_identifier.name
            ptr_name = dns.name.from_text(p_name, ptr_base)
            if not ptr_name.is_subdomain(origin):
                raise ValueError(
                    f"Catalog zone member identifier {ptr_name.to_text()} not a subdomain"
                )
            rdata = dns.rdata.from_text(
                dns.rdataclass.IN, dns.rdatatype.PTR, qname.to_text()
            )
            rdataset = zone.find_rdataset(ptr_name, dns.rdatatype.PTR, create=True)
            rdataset.add(rdata, ttl)
            # Configure DNSSec Policy for member Zone if DNSSec is enabled
            if nb_zone.dnssec_policy:
                rid = dns.name.from_text("group", ptr_name)
                policy_name = nb_zone.dnssec_policy.name.rstrip(" ")
                group_name = f"dnssec-policy-{policy_name}"
                rdata = dns.rdata.from_text(
                    dns.rdataclass.IN, dns.rdatatype.TXT, group_name
                )
                rdataset = zone.find_rdataset(rid, dns.rdatatype.TXT, create=True)
                rdataset.add(rdata, ttl)
        zone_root_node = zone.find_node(origin, create=True)
        # SOA record
        soa_rdataset = _create_soa_rdataset()
        zone_root_node.rdatasets.append(soa_rdataset)
        # NS record
        ns_rdataset = _create_ns_rdataset()
        zone_root_node.rdatasets.append(ns_rdataset)
        # version.catz. record
        version_rdataset = _create_version_rdataset()
        zone_version_node = zone.find_node(
            dns.name.from_text("version", origin), create=True
        )
        zone_version_node.rdatasets.append(version_rdataset)
        return zone
    except OperationalError as e:
        LOGGER.error(f"ERROR: Failed to create Catalog Zone: {e}")
        close_old_connections()
        return None
 def _generate_member_identifier() -> str:
    return b32encode(uuid4().bytes)[0:26].lower().decode("UTF-8")
 def update_member_identifier(zone: NBZone) -> None:
    try:
        CatalogZoneMemberIdentifier.objects.update_or_create(
            zone=zone,
            defaults={"name": _generate_member_identifier()},
        )
    except OperationalError as e:
        LOGGER.error(f"ERROR: Failed to update Catalog Zone member identifier: {e}")
        close_old_connections()
 def _create_soa_rdataset() -> dns.rdataset:
    try:
        serial = IntegerKeyValueSetting.objects.get_or_create(
            key="catalog-zone-soa-serial", defaults={"value": 1}
        ).value
        # SOA Record components
        ttl = 0
        rclass = dns.rdataclass.IN
        rtype = dns.rdatatype.SOA
        # Create SOA rdata object
        rdata = dns.rdata.from_text(
            rclass,
            rtype,
            f"invalid. invalid. {serial} 60 10 1209600 0",
        )
        # Create Rdataset and add the RDATA to it
        rdataset = dns.rdataset.Rdataset(rclass, rtype)
        rdataset.add(rdata, ttl)
        return rdataset
    except OperationalError as e:
        LOGGER.error(f"ERROR: Failed to access catz SOA record in database: {e}")
        close_old_connections()
 def _create_ns_rdataset() -> dns.rdataset:
    # NS record for catz.
    name = dns.name.from_text("invalid", dns.name.root)
    rdata = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.NS, str(name))
    rdataset = dns.rdataset.Rdataset(dns.rdataclass.IN, dns.rdatatype.NS)
    rdataset.add(rdata, 0)
    return rdataset
 def _create_version_rdataset() -> dns.rdataset:
    rdata = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.TXT, '"2"')
    rdataset = dns.rdataset.Rdataset(dns.rdataclass.IN, dns.rdatatype.TXT)
    rdataset.add(rdata, 0)
    return rdataset
@@ -0,0 +1,46 @@
 import socketserver
 import socket
 from .logger import get_logger
 LOGGER = get_logger(__name__)
 class DNSAddressMixin:
    def _resolve_address(self, server_address, socktype, proto):
        host, port = server_address
        infos = socket.getaddrinfo(
            host, port, socket.AF_UNSPEC, socktype, proto, socket.AI_PASSIVE
        )
        family, _, _, _, sockaddr = infos[0]
        self.address_family = family
        return sockaddr
 class TCPDNSServer(DNSAddressMixin, socketserver.TCPServer):
    allow_reuse_address = True
    def __init__(self, server_address, handler_class, keyring, tsig_view_map):
        sockaddr = self._resolve_address(
            server_address, socket.SOCK_STREAM, socket.IPPROTO_TCP
        )
        super().__init__(sockaddr, handler_class)
        self.keyring = keyring
        self.tsig_view_map = tsig_view_map
 class UDPDNSServer(DNSAddressMixin, socketserver.UDPServer):
    allow_reuse_address = True
    def __init__(self, server_address, handler_class, keyring, tsig_view_map):
        sockaddr = self._resolve_address(
            server_address, socket.SOCK_DGRAM, socket.IPPROTO_UDP
        )
        super().__init__(sockaddr, handler_class)
        self.keyring = keyring
        self.tsig_view_map = tsig_view_map
@@ -0,0 +1,12 @@
 import logging
 PLUGIN_NAME = "dns-bridge"
 def get_logger(name: str) -> logging.Logger:
    # name = name.replace("_","-").rsplit(".", 1)[-1]
    #
    # if name.startswith(PLUGIN_NAME):
    #    return logging.getLogger(name)
    # return logging.getLogger(f"{PLUGIN_NAME}.{name}")
    return logging.getLogger(f"{PLUGIN_NAME}")
@@ -0,0 +1,49 @@
 import netbox_dns.models
 from netbox_dns_bridge.utils import export_bind_zone_file
 from django.core.management.base import BaseCommand, CommandError
 class Command(BaseCommand):
    def add_arguments(self, parser):
        parser.add_argument(
            "--view",
            type=str,
            help="The name of the view the Zone to be exported is in",
        )
        parser.add_argument(
            "--zone", type=str, help="The FQDN of the Zone to be exported"
        )
        parser.add_argument(
            "--file", type=str, help="Path of the zone file to be written"
        )
    def handle(self, *args, **options):
        # Load parameters
        view_name = options["view"]
        zone_name = options["zone"]
        file_path = options["file"]
        if not view_name:
            raise CommandError("No --view parameter given")
        elif not zone_name:
            raise CommandError("No --zone parameter given")
        elif not file_path:
            raise CommandError("No --file parameter given")
        try:
            # Load the zone from NetBox DNS
            nb_zone = netbox_dns.models.Zone.objects.get(
                view__name=view_name, name=zone_name
            )
            if nb_zone:
                export_bind_zone_file(nb_zone, file_path=file_path)
                self.stdout.write(
                    self.style.SUCCESS(f"Zone '{zone_name}' exported to '{file_path}'")
                )
            else:
                self.stderr.write("Zone not found in Netbox. Aborting")
        except Exception as e:
            raise CommandError(f"Failed to export zone: {e}")
@@ -0,0 +1,48 @@
 import os
 import netbox_dns.models
 from netbox_dns_bridge.utils import export_bind_zone_file
 from django.core.management.base import BaseCommand, CommandError
 class Command(BaseCommand):
    def add_arguments(self, parser):
        parser.add_argument(
            "--path",
            type=str,
            help="Path to the directory where zone files are to be written",
        )
    def handle(self, *args, **options):
        # Load parameters
        base_path = options["path"]
        if not base_path:
            raise CommandError("No --path parameter given")
        # Ensure base_path exists
        os.makedirs(base_path, exist_ok=True)
        # Iterate through all zones
        nb_zones = netbox_dns.models.Zone.objects.prefetch_related("view").all()
        if not nb_zones.exists():
            self.stdout.write(self.style.WARNING("No zones found in NetBox DNS."))
            return
        for zone in nb_zones:
            # Determine view directory
            view_name = zone.view.name
            view_dir = os.path.join(base_path, view_name)
            os.makedirs(view_dir, exist_ok=True)
            # Zone file path
            file_path = os.path.join(view_dir, zone.name)
            try:
                # Call existing export function
                export_bind_zone_file(zone, file_path=file_path)
                self.stdout.write(
                    self.style.SUCCESS(f"Exported zone '{zone.name}' to '{file_path}'")
                )
            except Exception as e:
                self.stderr.write(f"Failed to export zone '{zone.name}': {e}")
@@ -0,0 +1,51 @@
 from django.core.management.base import BaseCommand, CommandError
 from netbox_dns_bridge.models import IntegerKeyValueSetting
 class Command(BaseCommand):
    help = "Get or set integer key-value settings"
    def add_arguments(self, parser):
        parser.add_argument(
            "action", choices=["get", "set", "list"], help="Action to perform"
        )
        parser.add_argument("key", nargs="?", help="Setting key")
        parser.add_argument(
            "value", nargs="?", type=int, help="Value to set (required for 'set')"
        )
    def handle(self, *args, **options):
        action = options["action"]
        key = options.get("key")
        value = options.get("value")
        if action == "list":
            settings = IntegerKeyValueSetting.objects.all()
            if not settings.exists():
                self.stdout.write("No settings found.")
                return
            for setting in settings:
                self.stdout.write(str(setting))
        elif action == "get":
            if not key:
                raise CommandError("A key is required for GET")
            try:
                setting = IntegerKeyValueSetting.objects.get(key=key)
                self.stdout.write(f"{setting.key}: {setting.value}")
            except IntegerKeyValueSetting.DoesNotExist:
                raise CommandError(f"No setting was found for {key}")
        elif action == "set":
            if not key:
                raise CommandError("A setting is required for SET command")
            if value is None:
                raise CommandError("A value is required for SET command")
            try:
                setting = IntegerKeyValueSetting.objects.get(key=key)
                old_value = setting.value
                setting.value = value
                setting.save()
                self.stdout.write(f"Updated {key} from {old_value} to {value}")
            except IntegerKeyValueSetting.DoesNotExist:
                raise CommandError(f"No setting found for {key}")
@@ -0,0 +1,108 @@
 import threading
 import dns.query
 import dns.message
 import dns.tsigkeyring
 import dns.name
 import dns.zone
 import dns.rdatatype
 import dns.rdataclass
 import dns.rdtypes
 import dns.exception
 import dns.renderer
 from django.core.management.base import BaseCommand
 from django.conf import settings
 from django.db import close_old_connections, OperationalError
 from netbox_dns.models import View
 from netbox_dns_bridge.request_handler import UDPRequestHandler, TCPRequestHandler
 from netbox_dns_bridge.dns_server import UDPDNSServer, TCPDNSServer
 from netbox_dns_bridge.logger import get_logger
 LOGGER = get_logger(__name__)
 SETTINGS = settings.PLUGINS_CONFIG.get("netbox_dns_bridge", {})
 class Command(BaseCommand):
    help = "Run a minimal AXFR DNS server using data from NetBox DNS plugin"
    def _load_tsig_key_settings(self):
        self.keyring = {}
        self.tsig_view_map = {}
        for view_name, data in self.tsig_keys.items():
            raw_key_name = data.get("keyname")
            secret = data.get("secret")
            algorithm_str = data.get("algorithm", "hmac-sha256")
            if not raw_key_name or not secret:
                LOGGER.error(
                    f"Skipping TSIG key for view {view_name}: missing keyname or secret."
                )
                continue
            try:
                nb_view = View.objects.get(name=view_name)
            except View.DoesNotExist:
                LOGGER.error(
                    f"Skipping TSIG key {raw_key_name}: view '{view_name}' not found."
                )
                continue
            except OperationalError:
                close_old_connections()
            # Normalize key name to absolute DNS name
            key_name_obj = dns.name.from_text(raw_key_name, origin=None).canonicalize()
            if not key_name_obj.is_absolute():
                key_name_obj = key_name_obj.concatenate(dns.name.root)
            key_name_str = key_name_obj.to_text()  # Will always include trailing do
            self.keyring[key_name_obj] = dns.tsig.Key(
                name=key_name_obj, secret=secret, algorithm=algorithm_str
            )
            self.tsig_view_map[key_name_str] = nb_view
            LOGGER.info(f"Loaded TSIG key {key_name_str} for view {nb_view.name}")
        if not self.keyring:
            msg = "No TSIG keys found in database."
            LOGGER.critical(msg)
            raise RuntimeError(msg)
    def add_arguments(self, parser):
        parser.add_argument(
            "--port", type=int, default=5354, help="Port number to listen on"
        )
        parser.add_argument(
            "--address", type=str, default="0.0.0.0", help="IP to bind to"
        )
    def handle(self, *args, **options):
        # Load parameters
        port = options["port"]
        address = options["address"]
        self.tsig_keys = SETTINGS.get("tsig_keys", None)
        if not self.tsig_keys:
            raise RuntimeError("tsig_keys variable not set in plugin settings.")
        self._load_tsig_key_settings()
        udp_server = UDPDNSServer(
            (address, port), UDPRequestHandler, self.keyring, self.tsig_view_map
        )
        tcp_server = TCPDNSServer(
            (address, port), TCPRequestHandler, self.keyring, self.tsig_view_map
        )
        def _run_udp_server(server):
            LOGGER.info(f"Query endpoint listening on {address} udp/{port}")
            server.serve_forever()
        udp_thread = threading.Thread(
            target=_run_udp_server, args=(udp_server,), daemon=True
        )
        udp_thread.start()
        LOGGER.info(f"Query endpoint listening on {address} tcp/{port}")
        tcp_server.serve_forever()
@@ -0,0 +1,58 @@
 # Generated by Django 5.2.9 on 2026-04-08 11:29
 import django.db.models.deletion
 from django.db import migrations, models
 class Migration(migrations.Migration):
    initial = True
    dependencies = [
        (
            "netbox_dns",
            "0030_dnsseckeytemplate_comments_dnsseckeytemplate_owner_and_more",
        ),
    ]
    operations = [
        migrations.CreateModel(
            name="IntegerKeyValueSetting",
            fields=[
                (
                    "id",
                    models.BigAutoField(
                        auto_created=True, primary_key=True, serialize=False
                    ),
                ),
                ("key", models.CharField(max_length=64)),
                ("value", models.IntegerField()),
            ],
            options={
                "default_permissions": (),
            },
        ),
        migrations.CreateModel(
            name="CatalogZoneMemberIdentifier",
            fields=[
                (
                    "id",
                    models.BigAutoField(
                        auto_created=True, primary_key=True, serialize=False
                    ),
                ),
                ("name", models.CharField(max_length=26, unique=True)),
                (
                    "zone",
                    models.OneToOneField(
                        on_delete=django.db.models.deletion.CASCADE,
                        related_name="catz_identifier",
                        to="netbox_dns.zone",
                    ),
                ),
            ],
            options={
                "ordering": ("name",),
            },
        ),
    ]
@@ -0,0 +1,32 @@
 # Generated by Django 5.2.9 on 2026-06-09 21:56
 import django.db.models.deletion
 from django.db import migrations, models
 class Migration(migrations.Migration):
    dependencies = [
        ('netbox_dns', '0030_dnsseckeytemplate_comments_dnsseckeytemplate_owner_and_more'),
        ('netbox_dns_bridge', '0001_initial'),
    ]
    operations = [
        migrations.AlterModelOptions(
            name='integerkeyvaluesetting',
            options={},
        ),
        migrations.CreateModel(
            name='SeenTransferClients',
            fields=[
                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False)),
                ('source_ip', models.GenericIPAddressField()),
                ('last_seen', models.DateTimeField()),
                ('view', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, related_name='seen_transfer_clients', to='netbox_dns.view')),
            ],
            options={
                'ordering': ('source_ip',),
                'constraints': [models.UniqueConstraint(fields=('source_ip', 'view'), name='unique_ip_view_seen_client')],
            },
        ),
    ]
@@ -0,0 +1,59 @@
 from django.db import models
 # import netbox.models
 import netbox_dns.models
 class IntegerKeyValueSetting(models.Model):
    _netbox_private = True
    key = models.CharField(max_length=64)
    value = models.IntegerField()
    def __str__(self):
        return f"{self.key}: {str(self.value)}"
 class CatalogZoneMemberIdentifier(models.Model):
    _netbox_private = True
    name = models.CharField(
        max_length=26,
        unique=True,
    )
    zone = models.OneToOneField(
        to=netbox_dns.models.Zone,
        on_delete=models.CASCADE,
        related_name="catz_identifier",
    )
    class Meta:
        ordering = ("name",)
    def __str__(self):
        return self.name
 class SeenTransferClients(models.Model):
    _netbox_private = True
    source_ip = models.GenericIPAddressField()
    last_seen = models.DateTimeField()
    view = models.ForeignKey(
        to=netbox_dns.models.View,
        on_delete=models.PROTECT,
        related_name="seen_transfer_clients",
    )
    def __str__(self):
        return f"{self.source_ip} ({self.view.name})"
    class Meta:
        ordering = ("source_ip",)
        constraints = [
            models.UniqueConstraint(
                fields=["source_ip", "view"],
                name="unique_ip_view_seen_client",
            ),
        ]
@@ -0,0 +1,136 @@
 import dns.message
 import dns.name
 import dns.opcode
 import dns.query
 import dns.rdatatype
 import dns.rdataclass
 import dns.rrset
 import dns.tsig
 from django.conf import settings
 from django.utils import timezone
 from django.db import close_old_connections, OperationalError
 from netbox.jobs import JobRunner
 from netbox_dns.models import View, Zone, Record
 from .logger import get_logger
 from .models import SeenTransferClients, IntegerKeyValueSetting
 LOGGER = get_logger(__name__)
 SETTINGS = settings.PLUGINS_CONFIG["netbox_dns_bridge"]
 class SendDNSNotify(JobRunner):
    class Meta:
        name = "Send DNS NOTIFY"
    def _load_tsig_key(self, view_name: str) -> dns.tsig.Key:
        tsig_keys = SETTINGS.get("tsig_keys", {})
        if view_name not in tsig_keys:
            raise RuntimeError(f"No TSIG key configured for view '{view_name}'")
        key_data = tsig_keys[view_name]
        raw_key_name = key_data.get("keyname")
        secret = key_data.get("secret")
        algorithm = key_data.get("algorithm")
        if not algorithm:
            raise RuntimeError(
                f"Missing 'algorithm' in TSIG key configuration for view '{view_name}'"
            )
        if not raw_key_name or not secret:
            raise RuntimeError(
                f"Incomplete TSIG key configuration for view '{view_name}'"
            )
        key_name = dns.name.from_text(raw_key_name, origin=None).canonicalize()
        if not key_name.is_absolute():
            key_name = key_name.concatenate(dns.name.root)
        return dns.tsig.Key(name=key_name, secret=secret, algorithm=algorithm)
    def run(self, *args, **kwargs):
        notify_over_tcp = SETTINGS.get("notify_over_tcp", False)
        view_name = kwargs["view_name"]
        try:
            catz_serial = IntegerKeyValueSetting.objects.get(
                key="catalog-zone-soa-serial"
            ).value
            zones = [
                (kwargs["zone_name"], kwargs["soa_serial"]),
                ("catz", catz_serial),
                (f"{view_name}.catz", catz_serial),
            ]
            view = View.objects.get(name=view_name)
            tsig_key = self._load_tsig_key(view_name)
            cutoff_hours = SETTINGS.get("notify_client_alive_threshold_hours", 24)
            seen_cutoff = timezone.now() - timezone.timedelta(hours=cutoff_hours)
            clients = SeenTransferClients.objects.filter(
                view=view, last_seen__gte=seen_cutoff
            )
            for zone_name, soa_serial in zones:
                zone_name = dns.name.from_text(zone_name, dns.name.root).to_text()
                msg = dns.message.make_query(zone_name, dns.rdatatype.SOA)
                msg.flags |= dns.flags.AA  # = 0
                msg.set_opcode(dns.opcode.NOTIFY)
                soa_rdata = dns.rdata.from_text(
                    dns.rdataclass.IN,
                    dns.rdatatype.SOA,
                    f"invalid. invalid. {soa_serial} 60 10 1209600 0",
                )
                soa_rrset = dns.rrset.from_rdata(zone_name, 0, soa_rdata)
                msg.authority.append(soa_rrset)
                msg.use_tsig(keyring={tsig_key.name: tsig_key}, keyname=tsig_key.name)
                for client in clients:
                    try:
                        if notify_over_tcp:
                            LOGGER.debug("Sending NOTIFY over TCP")
                            dns.query.tcp(msg, client.source_ip, port=5355, timeout=2)
                        else:
                            LOGGER.debug("Sending NOTIFY over UDP")
                            dns.query.udp(msg, client.source_ip, port=5355, timeout=2)
                        LOGGER.info(
                            f"NOTIFY sent: {client.source_ip} {view_name}/{zone_name} {soa_serial}"
                        )
                    except Exception as e:
                        LOGGER.error(
                            f"NOTIFY failed: {client.source_ip}"
                            f" {view_name}/{zone_name} {soa_serial}: {e}"
                        )
        except IntegerKeyValueSetting.DoesNotExist as e:
            LOGGER.error(f"Failed to get catalog zone serial: {e}")
        except OperationalError as e:
            LOGGER.error(f"NOTIFY failed due to unexpected error: {e}")
            close_old_connections()
 def schedule(zone: Zone):
    try:
        soa_record = Record.objects.filter(zone=zone, type="SOA", active=True).first()
        if soa_record is None:
            LOGGER.error(f"Zone {zone.name} has no active SOA record — skipping NOTIFY")
            return
        soa_serial = int(soa_record.value.split()[2])
    except OperationalError as e:
        LOGGER.error(f"DB ERROR while fetching SOA for zone {zone.name}: {e}")
        close_old_connections()
        return
    except (ValueError, IndexError) as e:
        LOGGER.error(f"Failed to parse SOA serial for zone {zone.name}: {e}")
        return
    SendDNSNotify.enqueue(
        zone_name=zone.name,
        view_name=zone.view.name,
        soa_serial=soa_serial,
    )
@@ -0,0 +1,446 @@
 import socketserver
 import socket
 import dns.query
 import dns.message
 import dns.tsigkeyring
 import dns.name
 import dns.zone
 import dns.rdatatype
 import dns.rdataclass
 import dns.rdtypes
 import dns.exception
 import dns.renderer
 from .logger import get_logger
 from django.utils import timezone
 from django.db import close_old_connections, OperationalError
 from django.conf import settings
 from netbox_dns.models import Zone, Record, View
 from netbox_dns_bridge import catalog_zone_manager as catzm
 from .models import SeenTransferClients
 LOGGER = get_logger(__name__)
 SETTINGS = settings.PLUGINS_CONFIG["netbox_dns_bridge"]
 class DNSBaseRequestHandler(socketserver.BaseRequestHandler):
    def __init__(self, request, client_address, server) -> None:
        self.MAX_WIRE = 65535
        self.RESERVED_TSIG = 300
        super().__init__(request, client_address, server)
    # _getZoneFromNB rewritten
    def _getZoneFromNB(self, zone_name, view_name) -> dns.zone.Zone:
        # Find the zone
        try:
            nb_zone = Zone.objects.get(
                name=zone_name,
                view__name=view_name,
                active=True,
            )
            # Build DNS zone
            zone = dns.zone.Zone(zone_name, dns.name.root)
            zone.rdclass = dns.rdataclass.IN
            nb_records = Record.objects.filter(zone=nb_zone, active=True)
            rdatasets_dict = {}
            for record in nb_records:
                rdtype = dns.rdatatype.from_text(record.type)
                if not record.name:
                    name = zone.origin
                elif record.name.endswith("."):
                    name = dns.name.from_text(record.name)
                else:
                    name = dns.name.from_text(record.name, origin=zone.origin)
                # If the record has no TTL, use the zone default
                ttl = record.ttl or nb_zone.default_ttl
                # Apply quoting for TXT records to stop tokanizer
                # from cutting it up:
                value = record.value
                if rdtype == dns.rdatatype.TXT:
                    if value.startswith('"') and value.endswith('"'):
                        value = value[1:-1].replace('" "', "").replace('"', '"')
                    if len(value) > 255:
                        # This is a bug fix for netbox. If netbox allowed for
                        # an unquoted value to be larger then 255 characters,
                        # it misunderstood everything behind a ; as a comment.
                        chunks = [
                            '"{}"'.format(value[i : i + 255])
                            for i in range(0, len(value), 255)
                        ]
                        value = " ".join(chunks)
                    else:
                        value = f'"{value}"'
                rdata = dns.rdata.from_text(
                    dns.rdataclass.IN,
                    rdtype,
                    value,
                    relativize=False,
                    origin=zone.origin,
                )
                # Initialize rdataset if it doesn't exist for this name and type
                if name not in rdatasets_dict:
                    rdatasets_dict[name] = {}
                if rdtype not in rdatasets_dict[name]:
                    rdatasets_dict[name][rdtype] = dns.rdataset.Rdataset(
                        dns.rdataclass.IN, rdtype
                    )
                # Add the rdata to the appropriate rdataset
                rdatasets_dict[name][rdtype].add(rdata, ttl)
            # Now, add all rdatasets to the zone
            for name, rdtypes in rdatasets_dict.items():
                for rdtype, rdataset in rdtypes.items():
                    # Ensure rdataset has the same rdclass as the zone
                    if rdataset.rdclass != zone.rdclass:
                        raise ValueError(
                            f"rdataset rdclass {rdataset.rdclass} does not match "
                            f"zone rdclass {zone.rdclass}"
                        )
                    # Check if the rdataset has any rdata before creating an RRset
                    if not rdataset:
                        LOGGER.debug(f"Skipping empty rdataset for {name} {rdtype}")
                        continue  # Skip empty rdataset
                    # Replace the rdataset for the given name and type
                    zone.replace_rdataset(name, rdataset)
            return zone
        except Zone.DoesNotExist:
            return None
        except OperationalError as e:
            LOGGER.error(f"DB ERROR: {e}")
            close_old_connections()
    def _deny_request_bad_tsig(self, wire, tsig_error: dns.rcode) -> None:
        # Use empty keyring to parse TSIG without validating
        query = dns.message.from_wire(
            wire, keyring={}, ignore_trailing=True, continue_on_error=True
        )
        # Make a response
        response = dns.message.make_response(query)
        response.set_rcode(dns.rcode.REFUSED)
        if query.had_tsig:
            # Add TSIG with error code, but do not sign (no MAC, empty keyring)
            response.use_tsig(
                keyring={},  # empty; we're not signing
                keyname=query.keyname,
                tsig_error=tsig_error,
            )
        self._send_response(response.to_wire())
    def _send_response(self, data) -> None:
        raise NotImplementedError
    def _deny_request(self, query, rcode: dns.rcode = dns.rcode.REFUSED) -> None:
        response = dns.message.make_response(query)
        response.set_rcode(rcode)
        wire = response.to_wire(multi=False)
        self._send_response(wire)
    def _track_seen_client(self, source_ip: str, view: View) -> None:
        if SETTINGS.get("notify_clients", False):
            try:
                SeenTransferClients.objects.update_or_create(
                    source_ip=source_ip,
                    view=view,
                    defaults={"last_seen": timezone.now()},
                )
            except OperationalError as e:
                LOGGER.error(f"DB ERROR: {e}")
                close_old_connections()
    def _handle_soa_request(self, query, soa_rrset, zone, peer, nb_view, dname) -> None:
        # We assume that the SOA rdataset has at least one record (it usually does).
        soa_rdata = soa_rrset[0]  # Get the first SOA record
        # Now, create the rrset from the soa_rdata
        rrset = dns.rrset.from_rdata(zone.origin, soa_rrset.ttl, soa_rdata)
        response = dns.message.make_response(query)
        # Set the Authoritative Answer flag
        response.flags |= dns.flags.AA
        # Append the rrset to the response's answer section
        response.answer.append(rrset)
        # TSIG response
        if query.had_tsig:
            # If key was found in DB
            if query.keyname in self.server.keyring:
                response.use_tsig(
                    self.server.keyring, keyname=query.keyname, original_id=query.id
                )
            else:
                # unknown key — use an empty keyring so use_tsig() does not
                # raise KeyError trying to look up a key that isn't present.
                response.set_rcode(dns.rcode.REFUSED)
                response.use_tsig(
                    {},  # empty keyring; no signing
                    keyname=query.keyname,
                    tsig_error=dns.rcode.BADKEY,
                )
        data = response.to_wire(max_size=512)
        self._send_response(data)
        LOGGER.info(f"{peer} SOA {nb_view.name}/{dname}")
    def _handle_axfr_request(self, query, zone, peer, nb_view, dname) -> None:
        if query.keyname not in self.server.keyring:
            LOGGER.error(f"AXFR aborted: keyname {query.keyname} not in keyring")
            self._deny_request(query)
            return
        tsig_key = self.server.keyring[query.keyname]
        rrsets = []
        soa_rrset = None
        for name, rdataset in zone.iterate_rdatasets():
            if not name.is_absolute():
                name = name.concatenate(zone.origin)
            rrset = dns.rrset.from_rdata_list(name, rdataset.ttl, rdataset)
            if rdataset.rdtype == dns.rdatatype.SOA and soa_rrset is None:
                soa_rrset = rrset
            else:
                rrsets.append(rrset)
        if soa_rrset is None:
            LOGGER.error(f"Zone {dname} has no SOA — aborting")
            return
        rrsets.insert(0, soa_rrset)  # Opening SOA
        rrsets.append(soa_rrset)  # Closing SOA
        # 2. Create a Renderer for the first message
        r = dns.renderer.Renderer(
            id=query.id,
            flags=(dns.flags.QR | dns.flags.AA),
            max_size=self.MAX_WIRE,
            origin=None,
        )
        r.add_question(
            query.question[0].name,
            query.question[0].rdtype,
            query.question[0].rdclass,
        )
        # 3. Loop through RRsets
        tsig_ctx = None
        for rrset in rrsets:
            try:
                r.add_rrset(dns.renderer.ANSWER, rrset)
                if r.max_size - len(r.output.getvalue()) < self.RESERVED_TSIG:
                    raise dns.exception.TooBig("TSIG wont fit")
            except dns.exception.TooBig:
                # TSIG chain previous message
                r.write_header()
                tsig_ctx = r.add_multi_tsig(
                    ctx=tsig_ctx,
                    secret=tsig_key.secret,
                    algorithm=tsig_key.algorithm,
                    keyname=query.keyname,
                    fudge=300,
                    id=query.id,
                    tsig_error=0,
                    other_data=b"",
                    request_mac=r.mac if tsig_ctx else query.mac,
                )
                wire = r.get_wire()
                self.request.sendall(len(wire).to_bytes(2, "big") + wire)
                # Start new renderer
                r = dns.renderer.Renderer(
                    id=query.id,
                    flags=(dns.flags.QR | dns.flags.AA),
                    max_size=self.MAX_WIRE,
                    origin=None,
                )
                r.add_question(
                    query.question[0].name,
                    query.question[0].rdtype,
                    query.question[0].rdclass,
                )
                try:
                    r.add_rrset(dns.renderer.ANSWER, rrset)
                except dns.exception.TooBig:
                    LOGGER.error(
                        f"RRset {rrset.name}/{dns.rdatatype.to_text(rrset.rdtype)} "
                        f"exceeds MAX_WIRE ({self.MAX_WIRE}) and cannot be sent; "
                        f"skipping."
                    )
        # 4. Final message with terminating TSIG
        r.write_header()
        tsig_ctx = r.add_multi_tsig(
            ctx=tsig_ctx,
            secret=tsig_key.secret,
            algorithm=tsig_key.algorithm,
            keyname=query.keyname,
            fudge=300,
            id=query.id,
            tsig_error=0,
            other_data=b"",
            request_mac=r.mac if tsig_ctx else query.mac,
        )
        wire = r.get_wire()
        self._send_response(wire)
        LOGGER.info(f"{peer} AXFR {nb_view.name}/{dname}")
    def _handle_dns_query(self, wire) -> None:
        peer = self.client_address[0]
        try:
            query = dns.message.from_wire(
                wire,
                keyring=self.server.keyring,
                continue_on_error=False,
                ignore_trailing=True,
            )
        except dns.tsig.BadSignature as e:
            LOGGER.warning(f"Request denied from {peer} failed TSIG verification: {e}")
            self._deny_request_bad_tsig(wire, dns.rcode.BADSIG)
            return
        except (dns.message.UnknownTSIGKey, dns.tsig.BadAlgorithm) as e:
            LOGGER.warning(f"Request denied from {peer} with bad TSIG key: {e}")
            self._deny_request_bad_tsig(wire, dns.rcode.BADKEY)
            return
        except Exception as e:
            LOGGER.error("Error parsing query: ", e)
            return
        # If there was no question in the query, refuse
        if len(query.question) != 1:
            self._deny_request(query)
            return
        question = query.question[0]
        qname = question.name
        qtype = question.rdtype
        dname = qname.to_text().rstrip(".")
        # Only process AXFR/SOA queris
        if qtype not in (dns.rdatatype.AXFR, dns.rdatatype.SOA):
            LOGGER.warning(
                f"Request denied from {peer}: Request was not AXFR or SOA (Type: {qtype})"
            )
            self._deny_request(query)
            return
        # Identify TSIG key used
        if not query.had_tsig:
            LOGGER.warning(f"Request denied from {peer}: No TSIG key used")
            self._deny_request(query)
            return
        key_name = query.keyname.canonicalize().to_text()
        # Check if the key matches a view
        nb_view = self.server.tsig_view_map.get(key_name)
        if not nb_view:
            LOGGER.warning(
                f"Request denied from {peer}: {key_name} does not match a view"
            )
            self._deny_request(query)
            return
        # Check if catalog zone
        if dname == "catz" or dname == f"{nb_view.name}.catz":
            zone = catzm.create_zone(dname, nb_view.name)
        else:
            zone = self._getZoneFromNB(dname, nb_view.name)
        # When zone was not found, let client know
        if not zone:
            LOGGER.warning(f"Zone {dname} not found in view {nb_view.name}")
            self._deny_request(query)
            return
        # Retrieve the existing SOA record from the Zone
        soa_rrset = zone.get_rdataset(zone.origin, dns.rdatatype.SOA)
        if soa_rrset is None:
            LOGGER.error(f"Zone {dname} has no SOA — aborting")
            return
        if qtype == dns.rdatatype.SOA:
            self._handle_soa_request(query, soa_rrset, zone, peer, nb_view, dname)
            self._track_seen_client(peer, nb_view)
        elif qtype == dns.rdatatype.AXFR:
            self._handle_axfr_request(query, zone, peer, nb_view, dname)
            self._track_seen_client(peer, nb_view)
 class UDPRequestHandler(DNSBaseRequestHandler):
    def __init__(self, request, client_address, server) -> None:
        super().__init__(request, client_address, server)
    def _send_response(self, data) -> None:
        sock = self.request[1]
        sock.sendto(data, self.client_address)
    def handle(self) -> None:
        data, sock = self.request
        peer = self.client_address[0]
        try:
            self._handle_dns_query(data)
        except Exception as e:
            LOGGER.error(f"Error handling request from {peer}: {e}")
            import traceback
            traceback.print_exc()
 class TCPRequestHandler(DNSBaseRequestHandler):
    def __init__(self, request, client_address, server) -> None:
        super().__init__(request, client_address, server)
    def _send_response(self, data) -> None:
        length = len(data).to_bytes(2, byteorder="big")
        self.request.sendall(length + data)
    def handle(self) -> None:
        peer = self.client_address[0]
        sock = self.request  # TCP socket
        sock.settimeout(10.0)  # Default 10 second timeout for inactivity
        try:
            while True:
                # Read 2-byte length prefix
                length_data = sock.recv(2)
                if not length_data:
                    return  # connection closed by peer
                if len(length_data) < 2:
                    # Incomplete length data, wait for more or fail
                    while len(length_data) < 2:
                        chunk = sock.recv(2 - len(length_data))
                        if not chunk:
                            return
                        length_data += chunk
                length = int.from_bytes(length_data, byteorder="big")
                wire = b""
                while len(wire) < length:
                    chunk = sock.recv(length - len(wire))
                    if not chunk:
                        return  # connection closed
                    wire += chunk
                self._handle_dns_query(wire)
        except socket.timeout:
            LOGGER.debug(f"Connection from {peer} timed out")
        except Exception as e:
            LOGGER.error(f"Error handling request from {peer}: {e}")
            import traceback
            traceback.print_exc()
@@ -0,0 +1 @@
 from . import netbox_dns_zones
@@ -0,0 +1,61 @@
 from django.db.models.signals import pre_save, post_save, post_delete
 from django.dispatch import receiver
 from django.db import transaction
 from django.conf import settings
 from netbox.context import current_request
 from netbox_dns.models import Zone
 from netbox_dns_bridge import catalog_zone_manager as catzm
 from netbox_dns_bridge import notify_handler
 SETTINGS = settings.PLUGINS_CONFIG["netbox_dns_bridge"]
@receiver(pre_save, sender=Zone)
 def zone_pre_save(sender, instance, **kwargs):
    zone = instance
    if zone.pk:
        try:
            zone._old_name = sender.objects.only("name").get(pk=zone.pk).name
        except sender.DoesNotExist:
            zone._old_name = None
    else:
        zone._old_name = None
@receiver(post_save, sender=Zone)
 def zone_post_save(sender, instance, created, **kwargs):
    zone = instance
    # Quit if this is not the first signal in this session for this zone.
    try:
        request = current_request.get()
        handled_zones = getattr(request, "_handled_zones", set())
        if zone.pk in handled_zones:
            return
        handled_zones.add(zone.pk)
        request._handled_zones = handled_zones
    except LookupError:
        pass
    # On commit, increment soa serial and if notify is enabled, schedule bg job.
    def _on_commit():
        catzm.increment_soa_serial()
        if SETTINGS.get("notify_clients", False):
            notify_handler.schedule(zone)
    transaction.on_commit(_on_commit)
    if created:
        # If zone was created, create catz member identifier record for this zone.
        catzm.update_member_identifier(zone)
    else:
        # Check if zone name has changed and change the catz member identifier if so.
        old_name = getattr(zone, "_old_name", None)
        if old_name and zone.name != old_name:
            catzm.update_member_identifier(zone)
@receiver(post_delete, sender=Zone)
 def zone_post_delete(sender, instance, **kwargs):
    catzm.increment_soa_serial()
@@ -0,0 +1,34 @@
 import dns.zone
 import dns.rdatatype
 import dns.rdataclass
 import dns.exception
 import netbox_dns.models
 def export_bind_zone_file(nb_zone: netbox_dns.models.Zone, file_path: str):
    # Create dnspython zone object
    dp_zone = dns.zone.Zone(origin=dns.name.from_text(nb_zone.name))
    for record in nb_zone.records.all():
        rname = record.name or "@"
        rdclass = dns.rdataclass.IN
        rdatatype = dns.rdatatype.from_text(record.type)
        # Create rdata object
        rdata = dns.rdata.from_text(rdclass, rdatatype, record.value)
        # Create rdataset
        rdataset = dns.rdataset.Rdataset(rdclass, rdatatype)
        rdataset.add(rdata, record.ttl)
        # Add to zone
        node = dp_zone.find_node(rname, create=True)
        node.rdatasets.append(rdataset)
    # Write zone to file in BIND format
    try:
        with open(file_path, "w") as f:
            dp_zone.to_file(f, sorted=True)
    except IOError as e:
        raise IOError(f"Failed to write zone file to {file_path}: {e}")
@@ -1,645 +0,0 @@
 [MAIN]
 # Analyse import fallback blocks. This can be used to support both Python 2 and
 # 3 compatible code, which means that the block might have code that exists
 # only in one or another interpreter, leading to false positives when analysed.
 analyse-fallback-blocks=no
 # Clear in-memory caches upon conclusion of linting. Useful if running pylint
 # in a server-like mode.
 clear-cache-post-run=no
 # Load and enable all available extensions. Use --list-extensions to see a list
 # all available extensions.
 #enable-all-extensions=
 # In error mode, messages with a category besides ERROR or FATAL are
 # suppressed, and no reports are done by default. Error mode is compatible with
 # disabling specific errors.
 #errors-only=
 # Always return a 0 (non-error) status code, even if lint errors are found.
 # This is primarily useful in continuous integration scripts.
 #exit-zero=
 # A comma-separated list of package or module names from where C extensions may
 # be loaded. Extensions are loading into the active Python interpreter and may
 # run arbitrary code.
 extension-pkg-allow-list=
 # A comma-separated list of package or module names from where C extensions may
 # be loaded. Extensions are loading into the active Python interpreter and may
 # run arbitrary code. (This is an alternative name to extension-pkg-allow-list
 # for backward compatibility.)
 extension-pkg-whitelist=
 # Return non-zero exit code if any of these messages/categories are detected,
 # even if score is above --fail-under value. Syntax same as enable. Messages
 # specified are enabled, while categories only check already-enabled messages.
 fail-on=
 # Specify a score threshold under which the program will exit with error.
 fail-under=10
 # Interpret the stdin as a python script, whose filename needs to be passed as
 # the module_or_package argument.
 #from-stdin=
 # Files or directories to be skipped. They should be base names, not paths.
 ignore=CVS
 # Add files or directories matching the regular expressions patterns to the
 # ignore-list. The regex matches against paths and can be in Posix or Windows
 # format. Because '\\' represents the directory delimiter on Windows systems,
 # it can't be used as an escape character.
 ignore-paths=
 # Files or directories matching the regular expression patterns are skipped.
 # The regex matches against base names, not paths. The default value ignores
 # Emacs file locks
 ignore-patterns=^\.#
 # List of module names for which member attributes should not be checked and
 # will not be imported (useful for modules/projects where namespaces are
 # manipulated during runtime and thus existing member attributes cannot be
 # deduced by static analysis). It supports qualified module names, as well as
 # Unix pattern matching.
 ignored-modules=
 # Python code to execute, usually for sys.path manipulation such as
 # pygtk.require().
 #init-hook=
 # Use multiple processes to speed up Pylint. Specifying 0 will auto-detect the
 # number of processors available to use, and will cap the count on Windows to
 # avoid hangs.
 jobs=1
 # Control the amount of potential inferred values when inferring a single
 # object. This can help the performance when dealing with large functions or
 # complex, nested conditions.
 limit-inference-results=100
 # List of plugins (as comma separated values of python module names) to load,
 # usually to register additional checkers.
 load-plugins=
 # Pickle collected data for later comparisons.
 persistent=yes
 # Resolve imports to .pyi stubs if available. May reduce no-member messages and
 # increase not-an-iterable messages.
 prefer-stubs=no
 # Minimum Python version to use for version dependent checks. Will default to
 # the version used to run pylint.
 py-version=3.13
 # Discover python modules and packages in the file system subtree.
 recursive=no
 # Add paths to the list of the source roots. Supports globbing patterns. The
 # source root is an absolute path or a path relative to the current working
 # directory used to determine a package namespace for modules located under the
 # source root.
 source-roots=
 # When enabled, pylint would attempt to guess common misconfiguration and emit
 # user-friendly hints instead of false-positive error messages.
 suggestion-mode=yes
 # Allow loading of arbitrary C extensions. Extensions are imported into the
 # active Python interpreter and may run arbitrary code.
 unsafe-load-any-extension=no
 # In verbose mode, extra non-checker-related info will be displayed.
 #verbose=
 [BASIC]
 # Naming style matching correct argument names.
 #argument-naming-style=snake_case
 argument-naming-style=camelCase
 # Regular expression matching correct argument names. Overrides argument-
 # naming-style. If left empty, argument names will be checked with the set
 # naming style.
 #argument-rgx=
 # Naming style matching correct attribute names.
 attr-naming-style=snake_case
 # Regular expression matching correct attribute names. Overrides attr-naming-
 # style. If left empty, attribute names will be checked with the set naming
 # style.
 #attr-rgx=
 # Bad variable names which should always be refused, separated by a comma.
 bad-names=foo,
          bar,
          baz,
          toto,
          tutu,
          tata
 # Bad variable names regexes, separated by a comma. If names match any regex,
 # they will always be refused
 bad-names-rgxs=
 # Naming style matching correct class attribute names.
 class-attribute-naming-style=any
 # Regular expression matching correct class attribute names. Overrides class-
 # attribute-naming-style. If left empty, class attribute names will be checked
 # with the set naming style.
 #class-attribute-rgx=
 # Naming style matching correct class constant names.
 class-const-naming-style=UPPER_CASE
 # Regular expression matching correct class constant names. Overrides class-
 # const-naming-style. If left empty, class constant names will be checked with
 # the set naming style.
 #class-const-rgx=
 # Naming style matching correct class names.
 class-naming-style=PascalCase
 # Regular expression matching correct class names. Overrides class-naming-
 # style. If left empty, class names will be checked with the set naming style.
 #class-rgx=
 # Naming style matching correct constant names.
 const-naming-style=UPPER_CASE
 # Regular expression matching correct constant names. Overrides const-naming-
 # style. If left empty, constant names will be checked with the set naming
 # style.
 #const-rgx=
 # Minimum line length for functions/classes that require docstrings, shorter
 # ones are exempt.
 docstring-min-length=-1
 # Naming style matching correct function names.
 function-naming-style=camelCase
 # Regular expression matching correct function names. Overrides function-
 # naming-style. If left empty, function names will be checked with the set
 # naming style.
 #function-rgx=
 # Good variable names which should always be accepted, separated by a comma.
 good-names=i,
           j,
           k,
           ex,
           Run,
           _
 # Good variable names regexes, separated by a comma. If names match any regex,
 # they will always be accepted
 good-names-rgxs=
 # Include a hint for the correct naming format with invalid-name.
 include-naming-hint=no
 # Naming style matching correct inline iteration names.
 inlinevar-naming-style=any
 # Regular expression matching correct inline iteration names. Overrides
 # inlinevar-naming-style. If left empty, inline iteration names will be checked
 # with the set naming style.
 #inlinevar-rgx=
 # Naming style matching correct method names.
 method-naming-style=camelCase
 # Regular expression matching correct method names. Overrides method-naming-
 # style. If left empty, method names will be checked with the set naming style.
 #method-rgx=
 # Naming style matching correct module names.
 module-naming-style=snake_case
 # Regular expression matching correct module names. Overrides module-naming-
 # style. If left empty, module names will be checked with the set naming style.
 #module-rgx=
 # Colon-delimited sets of names that determine each other's naming style when
 # the name regexes allow several styles.
 name-group=
 # Regular expression which should only match function or class names that do
 # not require a docstring.
 no-docstring-rgx=^_
 # List of decorators that produce properties, such as abc.abstractproperty. Add
 # to this list to register other decorators that produce valid properties.
 # These decorators are taken in consideration only for invalid-name.
 property-classes=abc.abstractproperty
 # Regular expression matching correct type alias names. If left empty, type
 # alias names will be checked with the set naming style.
 #typealias-rgx=
 # Regular expression matching correct type variable names. If left empty, type
 # variable names will be checked with the set naming style.
 #typevar-rgx=
 # Naming style matching correct variable names.
 variable-naming-style=snake_case
 # Regular expression matching correct variable names. Overrides variable-
 # naming-style. If left empty, variable names will be checked with the set
 # naming style.
 #variable-rgx=
 [CLASSES]
 # Warn about protected attribute access inside special methods
 check-protected-access-in-special-methods=no
 # List of method names used to declare (i.e. assign) instance attributes.
 defining-attr-methods=__init__,
                      __new__,
                      setUp,
                      asyncSetUp,
                      __post_init__
 # List of member names, which should be excluded from the protected access
 # warning.
 exclude-protected=_asdict,_fields,_replace,_source,_make,os._exit
 # List of valid names for the first argument in a class method.
 valid-classmethod-first-arg=cls
 # List of valid names for the first argument in a metaclass class method.
 valid-metaclass-classmethod-first-arg=mcs
 [DESIGN]
 # List of regular expressions of class ancestor names to ignore when counting
 # public methods (see R0903)
 exclude-too-few-public-methods=
 # List of qualified class names to ignore when counting class parents (see
 # R0901)
 ignored-parents=
 # Maximum number of arguments for function / method.
 max-args=5
 # Maximum number of attributes for a class (see R0902).
 max-attributes=7
 # Maximum number of boolean expressions in an if statement (see R0916).
 max-bool-expr=5
 # Maximum number of branch for function / method body.
 max-branches=12
 # Maximum number of locals for function / method body.
 max-locals=15
 # Maximum number of parents for a class (see R0901).
 max-parents=7
 # Maximum number of public methods for a class (see R0904).
 max-public-methods=20
 # Maximum number of return / yield for function / method body.
 max-returns=6
 # Maximum number of statements in function / method body.
 max-statements=50
 # Minimum number of public methods for a class (see R0903).
 min-public-methods=2
 [EXCEPTIONS]
 # Exceptions that will emit a warning when caught.
 overgeneral-exceptions=builtins.BaseException,builtins.Exception
 [FORMAT]
 # Expected format of line ending, e.g. empty (any line ending), LF or CRLF.
 expected-line-ending-format=
 # Regexp for a line that is allowed to be longer than the limit.
 ignore-long-lines=^\s*(# )?<?https?://\S+>?$
 # Number of spaces of indent required inside a hanging or continued line.
 indent-after-paren=4
 # String used as indentation unit. This is usually "    " (4 spaces) or "\t" (1
 # tab).
 indent-string='    '
 # Maximum number of characters on a single line.
 max-line-length=120
 # Maximum number of lines in a module.
 max-module-lines=1000
 # Allow the body of a class to be on the same line as the declaration if body
 # contains single statement.
 single-line-class-stmt=no
 # Allow the body of an if to be on the same line as the test if there is no
 # else.
 single-line-if-stmt=no
 [IMPORTS]
 # List of modules that can be imported at any level, not just the top level
 # one.
 allow-any-import-level=
 # Allow explicit reexports by alias from a package __init__.
 allow-reexport-from-package=no
 # Allow wildcard imports from modules that define __all__.
 allow-wildcard-with-all=no
 # Deprecated modules which should not be used, separated by a comma.
 deprecated-modules=
 # Output a graph (.gv or any supported image format) of external dependencies
 # to the given file (report RP0402 must not be disabled).
 ext-import-graph=
 # Output a graph (.gv or any supported image format) of all (i.e. internal and
 # external) dependencies to the given file (report RP0402 must not be
 # disabled).
 import-graph=
 # Output a graph (.gv or any supported image format) of internal dependencies
 # to the given file (report RP0402 must not be disabled).
 int-import-graph=
 # Force import order to recognize a module as part of the standard
 # compatibility libraries.
 known-standard-library=
 # Force import order to recognize a module as part of a third party library.
 known-third-party=enchant
 # Couples of modules and preferred modules, separated by a comma.
 preferred-modules=
 [LOGGING]
 # The type of string formatting that logging methods do. `old` means using %
 # formatting, `new` is for `{}` formatting.
 logging-format-style=old
 # Logging modules to check that the string format arguments are in logging
 # function parameter format.
 logging-modules=logging
 [MESSAGES CONTROL]
 # Only show warnings with the listed confidence levels. Leave empty to show
 # all. Valid levels: HIGH, CONTROL_FLOW, INFERENCE, INFERENCE_FAILURE,
 # UNDEFINED.
 confidence=HIGH,
           CONTROL_FLOW,
           INFERENCE,
           INFERENCE_FAILURE,
           UNDEFINED
 # Disable the message, report, category or checker with the given id(s). You
 # can either give multiple identifiers separated by comma (,) or put this
 # option multiple times (only on the command line, not in the configuration
 # file where it should appear only once). You can also use "--disable=all" to
 # disable everything first and then re-enable specific checks. For example, if
 # you want to run only the similarities checker, you can use "--disable=all
 # --enable=similarities". If you want to run only the classes checker, but have
 # no Warning level messages displayed, use "--disable=all --enable=classes
 # --disable=W".
 disable=raw-checker-failed,
        bad-inline-option,
        locally-disabled,
        file-ignored,
        suppressed-message,
        useless-suppression,
        deprecated-pragma,
        use-symbolic-message-instead,
        use-implicit-booleaness-not-comparison-to-string,
        use-implicit-booleaness-not-comparison-to-zero
 # Enable the message, report, category or checker with the given id(s). You can
 # either give multiple identifier separated by comma (,) or put this option
 # multiple time (only on the command line, not in the configuration file where
 # it should appear only once). See also the "--disable" option for examples.
 enable=
 [METHOD_ARGS]
 # List of qualified names (i.e., library.method) which require a timeout
 # parameter e.g. 'requests.api.get,requests.api.post'
 timeout-methods=requests.api.delete,requests.api.get,requests.api.head,requests.api.options,requests.api.patch,requests.api.post,requests.api.put,requests.api.request
 [MISCELLANEOUS]
 # List of note tags to take in consideration, separated by a comma.
 notes=FIXME,
      XXX,
      TODO
 # Regular expression of note tags to take in consideration.
 notes-rgx=
 [REFACTORING]
 # Maximum number of nested blocks for function / method body
 max-nested-blocks=5
 # Complete name of functions that never returns. When checking for
 # inconsistent-return-statements if a never returning function is called then
 # it will be considered as an explicit return statement and no message will be
 # printed.
 never-returning-functions=sys.exit,argparse.parse_error
 # Let 'consider-using-join' be raised when the separator to join on would be
 # non-empty (resulting in expected fixes of the type: ``"- " + " -
 # ".join(items)``)
 suggest-join-with-non-empty-separator=yes
 [REPORTS]
 # Python expression which should return a score less than or equal to 10. You
 # have access to the variables 'fatal', 'error', 'warning', 'refactor',
 # 'convention', and 'info' which contain the number of messages in each
 # category, as well as 'statement' which is the total number of statements
 # analyzed. This score is used by the global evaluation report (RP0004).
 evaluation=max(0, 0 if fatal else 10.0 - ((float(5 * error + warning + refactor + convention) / statement) * 10))
 # Template used to display messages. This is a python new-style format string
 # used to format the message information. See doc for all details.
 msg-template=
 # Set the output format. Available formats are: text, parseable, colorized,
 # json2 (improved json format), json (old json format) and msvs (visual
 # studio). You can also give a reporter class, e.g.
 # mypackage.mymodule.MyReporterClass.
 #output-format=
 # Tells whether to display a full report or only the messages.
 reports=no
 # Activate the evaluation score.
 score=yes
 [SIMILARITIES]
 # Comments are removed from the similarity computation
 ignore-comments=yes
 # Docstrings are removed from the similarity computation
 ignore-docstrings=yes
 # Imports are removed from the similarity computation
 ignore-imports=yes
 # Signatures are removed from the similarity computation
 ignore-signatures=yes
 # Minimum lines number of a similarity.
 min-similarity-lines=4
 [SPELLING]
 # Limits count of emitted suggestions for spelling mistakes.
 max-spelling-suggestions=4
 # Spelling dictionary name. No available dictionaries : You need to install
 # both the python package and the system dependency for enchant to work.
 spelling-dict=
 # List of comma separated words that should be considered directives if they
 # appear at the beginning of a comment and should not be checked.
 spelling-ignore-comment-directives=fmt: on,fmt: off,noqa:,noqa,nosec,isort:skip,mypy:
 # List of comma separated words that should not be checked.
 spelling-ignore-words=
 # A path to a file that contains the private dictionary; one word per line.
 spelling-private-dict-file=
 # Tells whether to store unknown words to the private dictionary (see the
 # --spelling-private-dict-file option) instead of raising a message.
 spelling-store-unknown-words=no
 [STRING]
 # This flag controls whether inconsistent-quotes generates a warning when the
 # character used as a quote delimiter is used inconsistently within a module.
 check-quote-consistency=no
 # This flag controls whether the implicit-str-concat should generate a warning
 # on implicit string concatenation in sequences defined over several lines.
 check-str-concat-over-line-jumps=no
 [TYPECHECK]
 # List of decorators that produce context managers, such as
 # contextlib.contextmanager. Add to this list to register other decorators that
 # produce valid context managers.
 contextmanager-decorators=contextlib.contextmanager
 # List of members which are set dynamically and missed by pylint inference
 # system, and so shouldn't trigger E1101 when accessed. Python regular
 # expressions are accepted.
 generated-members=
 # Tells whether to warn about missing members when the owner of the attribute
 # is inferred to be None.
 ignore-none=yes
 # This flag controls whether pylint should warn about no-member and similar
 # checks whenever an opaque object is returned when inferring. The inference
 # can return multiple potential results while evaluating a Python object, but
 # some branches might not be evaluated, which results in partial inference. In
 # that case, it might be useful to still emit no-member and other checks for
 # the rest of the inferred objects.
 ignore-on-opaque-inference=yes
 # List of symbolic message names to ignore for Mixin members.
 ignored-checks-for-mixins=no-member,
                          not-async-context-manager,
                          not-context-manager,
                          attribute-defined-outside-init
 # List of class names for which member attributes should not be checked (useful
 # for classes with dynamically set attributes). This supports the use of
 # qualified names.
 ignored-classes=optparse.Values,thread._local,_thread._local,argparse.Namespace
 # Show a hint with possible names when a member name was not found. The aspect
 # of finding the hint is based on edit distance.
 missing-member-hint=yes
 # The minimum edit distance a name should have in order to be considered a
 # similar match for a missing member name.
 missing-member-hint-distance=1
 # The total number of similar names that should be taken in consideration when
 # showing a hint for a missing member.
 missing-member-max-choices=1
 # Regex pattern to define which classes are considered mixins.
 mixin-class-rgx=.*[Mm]ixin
 # List of decorators that change the signature of a decorated function.
 signature-mutators=
 [VARIABLES]
 # List of additional names supposed to be defined in builtins. Remember that
 # you should avoid defining new builtins when possible.
 additional-builtins=
 # Tells whether unused global variables should be treated as a violation.
 allow-global-unused-variables=yes
 # List of names allowed to shadow builtins
 allowed-redefined-builtins=
 # List of strings which can identify a callback function by name. A callback
 # name must start or end with one of those strings.
 callbacks=cb_,
          _cb
 # A regular expression matching the name of dummy variables (i.e. expected to
 # not be used).
 dummy-variables-rgx=_+$|(_[a-zA-Z0-9_]*[a-zA-Z0-9]+?$)|dummy|^ignored_|^unused_
 # Argument names that match this expression will be ignored.
 ignored-argument-names=_.*|^ignored_|^unused_
 # Tells whether we should check for unused import in __init__ files.
 init-import=no
 # List of qualified module names which can have objects that can redefine
 # builtins.
 redefining-builtins-modules=six.moves,past.builtins,future.builtins,builtins,io
@@ -3,27 +3,30 @@ requires = ["setuptools>=61", "wheel"]
 build-backend = "setuptools.build_meta"
 [project]
-name = "netbox-plugin-bind-provisioner"
+name = "netbox-plugin-dns-bridge"
 dynamic = ["version"]
-description = "A Bind provisioning plugin that uses netbox_dns for its data source"
+description = "A bridge between netbox-plugin-dns and your DNS infrastructure."
 authors = [
    { name = "Sven Luethi" },
 ]
-license = { text = "GPL-2.0" }
+license = { file = "LICENSE.md" }
 readme = "README.md"
 requires-python = ">=3.7"
-dependencies = ["netbox-plugin-dns"]
+dependencies = [
 "netbox-plugin-dns>=1.5.0",
 "dnspython>=2.8.0"
 ]
 [tool.setuptools]
 include-package-data = true
 zip-safe = false
-package-dir = { "" = "src" }
+package-dir = { "" = "." }
 [tool.setuptools.packages.find]
-where = ["src"]
+where = ["."]
 [tool.setuptools.dynamic]
-version = { attr = "netbox_plugin_bind_provisioner.__version__" }
+version = { attr = "netbox_dns_bridge.__version__" }
 [project.urls]
 Homepage = "https://github.com/Suraxius/netbox-plugin-bind-provisioner"
@@ -1,2 +0,0 @@
 netbox-plugin-dns>=1.2.0
 dnspython>=2.8.0
@@ -1,36 +0,0 @@
 import logging
 from netbox.plugins import PluginConfig
 from django.db import models
 from django.utils.translation import gettext_lazy as _
 from django.dispatch import receiver
 from django.conf import settings
 __version__ = "0.9.9"
 logger = logging.getLogger(__name__)
 logging.basicConfig(
    level=logging.DEBUG,  # Log level (DEBUG, INFO, WARNING, ERROR, CRITICAL)
    format="%(asctime)s [%(levelname)s] %(name)s: %(message)s",  # Log format
    datefmt="%Y-%m-%d %H:%M:%S",  # Date format for timestamps
 )
 class BindProvisionerConfig(PluginConfig):
    name = "netbox_plugin_bind_provisioner"
    verbose_name = "Netbox Bind Provisioner"
    description = "Provisions Zones to a Bind Server configured as hidden master"
    version = __version__
    author = "Sven Luethi"
    author_email = "sven.luethi@everyware.ch"
    base_url = "bind_provisioner"
    def ready(self):
        self.settings = settings.PLUGINS_CONFIG.get(self.name, None)
        if not self.settings:
            raise RuntimeError(
                f"{self.name}: Plugin {self.verbose_name} failed to initialize due to missing settings. Terminating Netbox."
            )
 config = BindProvisionerConfig
 default_app_config = ".apps.NetboxBindProvisionerConfig"
@@ -1,672 +0,0 @@
 import logging
 import socketserver
 import os
 import threading
 import dns.query
 import dns.message
 import dns.tsigkeyring
 import dns.name
 import dns.zone
 import dns.rdatatype
 import dns.rdataclass
 import dns.rdtypes
 import dns.exception
 import dns.renderer
 # from hashlib import sha256
 from django.core.management.base import BaseCommand
 from django.conf import settings
 from django.utils import timezone
 from netbox_dns.models import Zone, Record, View
 from netbox_dns.choices import ZoneStatusChoices, RecordStatusChoices
 from datetime import datetime
 from netbox_plugin_bind_provisioner.models import IntegerKeyValueSetting
 logger = logging.getLogger('bind-transfer-endpoint')
 class CatalogZone():
    lock = threading.Lock()
    _serial_max = 0xFFFFFFFF
    _serial_obj = None
    _previous_last_zone_update = None
    # Following function loads the last serial from the DB. No return value
    # but it sets the setting "catalog_serial" or terminates the plugin on failure.
    @classmethod
    def initSerial(cls):
        try:
            cls._serial_obj = IntegerKeyValueSetting.objects.get(key="catalog-zone-soa-serial")
            logger.debug(f"Catalog zone SOA serial number {cls._serial_obj.value} loaded from database")
        except IntegerKeyValueSetting.DoesNotExist:
            cls._serial_obj = IntegerKeyValueSetting.objects.create(key="catalog-zone-soa-serial", value=1)
            logger.debug(f"Catalog zone SOA serial number was not set in the database. Set to {cls._serial_obj.value}")
    @classmethod
    def _incrementSerial(cls):
        if 0 < cls._serial_obj.value < cls._serial_max:
            cls._serial_obj.value += 1
            cls._serial_obj.save()
        else:
            logger.warn(
                f"Failed to incremenet catalog serial {cls._serial_obj.value}. Will overflow serial back to 1"
            )
            cls._serial_obj = 1
            cls._serial_obj.save()
            logger.debug(f"Catalog zone SOA serial number incremented to {_serial_obj.value}")
    @classmethod
    def create(cls, name, view_name):
        # Synchronize following across threads as TCP and UDP listener both use it.
        with cls.lock:
            #cls = self.__class__
            #datestamp = datetime.now().strftime("%y%m%d")
            #latest_zone = Zone.objects.filter().order_by("-last_updated").first()
            latest_zone = Zone.objects.filter(status=ZoneStatusChoices.STATUS_ACTIVE).order_by('-last_updated').first()
            last_zone_update = getattr(latest_zone, 'last_updated', None)
            # Check if there was a zone updated since last call
            # If no zone was found previously then this will be false since (None != None) = False
            if cls._previous_last_zone_update != last_zone_update:
                if last_zone_update is not None:
                    logger.debug(
                        f"Zone {latest_zone.name} was updated in view {latest_zone.view.name}"
                    )
                # Setting previous last zone update for next iteration:
                cls._previous_last_zone_update = last_zone_update
                cls._incrementSerial()
        # Zone origin
        origin = dns.name.from_text(name, dns.name.root)
        # Create a new empty zone
        zone = dns.zone.Zone(origin)
        zone.rdclass = dns.rdataclass.IN
        # get zones from netbox
        nb_zones = Zone.objects.filter(
            view__name=view_name, status=ZoneStatusChoices.STATUS_ACTIVE
        )
        ptr_base = dns.name.from_text("zones", origin)
        for nb_zone in nb_zones:
            ttl = nb_zone.soa_ttl
            qname = dns.name.from_text(nb_zone.name, dns.name.root)
            # zone_id = sha256(qname.to_text().encode()).hexdigest()[0:63]
            zone_id = str(nb_zone.id)
            # Create PTR record
            ptr_name = dns.name.from_text(zone_id, ptr_base)
            assert ptr_name.is_subdomain(origin)
            rdata = dns.rdata.from_text(
                dns.rdataclass.IN, dns.rdatatype.PTR, qname.to_text()
            )
            rdataset = zone.find_rdataset(ptr_name, dns.rdatatype.PTR, create=True)
            rdataset.add(rdata, ttl)
            # Configure DNSSec Policy for member Zone if DNSSec is enabled
            if nb_zone.dnssec_policy:
                # Configure policy
                rid = dns.name.from_text(f"policy.dnssec", ptr_name)
                rdata = dns.rdata.from_text(
                    dns.rdataclass.IN, dns.rdatatype.TXT, nb_zone.dnssec_policy.name
                )
                rdataset = zone.find_rdataset(rid, dns.rdatatype.TXT, create=True)
                rdataset.add(rdata, ttl)
            # Configure dnssec status for member zone
            status = str(1 if nb_zone.dnssec_policy else 0)
            rid = dns.name.from_text(f"enabled.dnssec", ptr_name)
            rdata = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.TXT, status)
            rdataset = zone.find_rdataset(rid, dns.rdatatype.TXT, create=True)
            rdataset.add(rdata, ttl)
        # SOA Record components
        ttl = 3600
        rclass = dns.rdataclass.IN
        rtype = dns.rdatatype.SOA
        mname = dns.name.root  # dns.name.from_text("invalid.", origin)
        rname = dns.name.root  # dns.name.from_text("contact.master.", origin)
        serial = cls._serial_obj.value
        refresh = 60
        retry = 10
        expire = 1209600
        minimum = 86400
        # Create SOA rdata object
        soa_rdata = dns.rdata.from_text(
            rclass,
            rtype,
            f"{mname} {rname} {serial} {refresh} {retry} {expire} {minimum}",
        )
        # Create Rdataset and add the RDATA to it
        soa_rdataset = dns.rdataset.Rdataset(rclass, rtype)
        soa_rdataset.add(soa_rdata, ttl)
        # Add to the origin node in the zone
        node = zone.find_node(origin, create=True)
        node.rdatasets.append(soa_rdataset)
        # NS record for catz.
        ns_name = dns.name.from_text("invalid", dns.name.root)
        ns_rdata = dns.rdata.from_text(
            dns.rdataclass.IN, dns.rdatatype.NS, str(ns_name)
        )
        ns_rdataset = dns.rdataset.Rdataset(dns.rdataclass.IN, dns.rdatatype.NS)
        ns_rdataset.add(ns_rdata, 86400)
        # Add to node (catz. is the origin)
        ns_node = zone.find_node(origin, create=True)
        ns_node.rdatasets.append(ns_rdataset)
        # TXT record for version.catz.
        version_name = dns.name.from_text(
            "version", origin
        )  # relative to origin "catz."
        txt_rdata = dns.rdata.from_text(dns.rdataclass.IN, dns.rdatatype.TXT, '"2"')
        txt_rdataset = dns.rdataset.Rdataset(dns.rdataclass.IN, dns.rdatatype.TXT)
        txt_rdataset.add(txt_rdata, 86400)
        # Add to node version.catz.
        txt_node = zone.find_node(version_name, create=True)
        txt_node.rdatasets.append(txt_rdataset)
        return zone
    @classmethod
    def importLegacySerialFile(cls, file_path):
        if os.path.exists(file_path):
            try:
                with open(file_path, "r") as f:
                    serial = int(f.read().strip())
                    cls._serial_obj.value = int(serial)
                    cls._serial_obj.save()
                    logger.info(f"Legacy catalog serial file {file_path} imported into database and file removed. Serial is now {serial}")
                    os.remove(file_path)
            except OSError as e:
                logger.error(f"Failed to import catalog zone serial from legacy file {file_path}")
 class DNSBaseRequestHandler(socketserver.BaseRequestHandler):
    # getZoneFromNB rewritten
    def getZoneFromNB(self, zone_name, view_name):
        # Find the zone
        try:
            nb_zone = Zone.objects.get(
                name=zone_name, view__name=view_name, status=ZoneStatusChoices.STATUS_ACTIVE
            )
        except Zone.DoesNotExist:
            return None
        # Build DNS zone
        zone = dns.zone.Zone(zone_name, dns.name.root)
        zone.rdclass = dns.rdataclass.IN
        nb_records = Record.objects.filter(
            zone=nb_zone, status=RecordStatusChoices.STATUS_ACTIVE
        )
        rdatasets_dict = {}
        for record in nb_records:
            rdtype = dns.rdatatype.from_text(record.type)
            if not record.name:
                name = zone.origin
            elif record.name.endswith("."):
                name = dns.name.from_text(record.name)
            else:
                name = dns.name.from_text(record.name, origin=zone.origin)
            # If the record has no TTL, use the zone default
            ttl = record.ttl or nb_zone.default_ttl
            rdata = dns.rdata.from_text(
                dns.rdataclass.IN,
                rdtype,
                record.value,
                relativize=False,
                origin=zone.origin,
            )
            # Initialize rdataset if it doesn't exist for this name and type
            if name not in rdatasets_dict:
                rdatasets_dict[name] = {}
            if rdtype not in rdatasets_dict[name]:
                rdatasets_dict[name][rdtype] = dns.rdataset.Rdataset(dns.rdataclass.IN, rdtype)
            # Add the rdata to the appropriate rdataset
            rdatasets_dict[name][rdtype].add(rdata, ttl)
        # Now, add all rdatasets to the zone
        for name, rdtypes in rdatasets_dict.items():
            for rdtype, rdataset in rdtypes.items():
                # Ensure rdataset has the same rdclass as the zone
                if rdataset.rdclass != zone.rdclass:
                    raise ValueError(f"rdataset rdclass {rdataset.rdclass} does not match zone rdclass {zone.rdclass}")
                # Check if the rdataset has any rdata before creating an RRset
                if not rdataset:
                    logger.debug(f"Skipping empty rdataset for {name} {rdtype}")
                    continue  # Skip empty rdataset
                # Replace the rdataset for the given name and type
                zone.replace_rdataset(name, rdataset)
        return zone
    def denyRequestBadTSIG(self, wire, tsig_error: dns.rcode):
        # Use empty keyring to parse TSIG without validating
        query = dns.message.from_wire(wire, keyring={}, ignore_trailing=True, continue_on_error=True)
        # Make a response
        response = dns.message.make_response(query)
        response.set_rcode(dns.rcode.REFUSED)
        if query.had_tsig:
            # Add TSIG with BADKEY, but do not sign (no MAC)
            response.use_tsig(
                keyring={},  # empty; we're not signing
                keyname=query.keyname,
                tsig_error=tsig_error
            )
        self.denyRequest(query)
 class UDPRequestHandler(DNSBaseRequestHandler):
    def denyRequest(self, query, rcode: dns.rcode = dns.rcode.REFUSED):
        response = dns.message.make_response(query)
        response.set_rcode(rcode)
        wire = response.to_wire(multi=False)
        sock = self.request[1]
        sock.sendto(wire, self.client_address)
    def handle(self):
        data, sock = self.request
        peer = self.client_address[0]
        query = None
        try:
            query = dns.message.from_wire(
                data,
                keyring=self.server.keyring,
                continue_on_error=False,
                ignore_trailing=True
            )
        except Exception as e:
            logger.error("Error parsing query: ", e)
            return
        # Create a response
        response = dns.message.make_response(query)
        # Set the Authoritative Answer flag
        response.flags |= dns.flags.AA
        question = query.question[0]
        # Get the queried record name and type:
        qname = question.name
        qtype = question.rdtype
        dname = qname.to_text().rstrip(".")
        # Only process SOA queries
        if qtype != dns.rdatatype.SOA:
            logger.warning(f"Request denied from {peer}: Request was not SOA (Type: {qtype})")
            self.denyRequest(query)
            return
        # Identify TSIG key used
        if not query.had_tsig:
            logger.warning(f"Request denied from {peer}: No TSIG key used")
            self.denyRequest(query)
            return
        key_name = query.keyname.canonicalize().to_text()
        # Check if key matches a view
        nb_view = self.server.tsig_view_map.get(key_name)
        if not nb_view:
            logger.warning(f"Request denied from {peer}: {key_name} does not match a view")
            self.denyRequestBadTSIG(wire, dns.rcode.BADKEY)
            return
        # Check if catalog zone
        if dname == "catz" or dname == f"{nb_view.name}.catz":
            zone = CatalogZone.create(dname, nb_view.name)
        # If generic zone, retreive from NB
        else:
            zone = self.getZoneFromNB(dname, nb_view.name)
            # When zone was not found, let client know
            if not zone:
                logger.warning(f"Zone {nb_view.name}/{dname} not found in NB")
                self.denyRequest(query)
                return
        # Retrieve the existing SOA record from the Zone
        soa_rdataset = zone.get_rdataset(zone.origin, dns.rdatatype.SOA)
        # We assume that the SOA rdataset has at least one record (it usually does).
        soa_rdata = soa_rdataset[0] # Get the first SOA record
        # Now, create the rrset from the soa_rdata
        rrset = dns.rrset.from_rdata(zone.origin, soa_rdataset.ttl, soa_rdata)
        # Append the rrset to the response's answer section
        response.answer.append(rrset)
        # TSIG response
        if query.had_tsig:
            # If key was found in DB
            if query.keyname in self.server.keyring:
                response.use_tsig(self.server.keyring, keyname=query.keyname, original_id=query.id)
            else:
                # If key is unknown
                response.set_rcode(dns.rcode.REFUSED)
                # Generate new key for keyname provided
                #keyname = query.keyname
                #b64 = base64.b64encode(urandom(32)).decode("ascii")
                #newkey = dns.tsigkeyring.from_text({ keyname: b64 })
                response.use_tsig(self.server.keyring, keyname=query.keyname, tsig_error=dns.rcode.BADKEY)
        # Send back the response
        response_wire = response.to_wire(max_size=512)
        sock.sendto(response_wire, self.client_address)
        logger.debug(f"{peer} SOA {nb_view.name}/{dname}")
 class TCPRequestHandler(DNSBaseRequestHandler):
    def denyRequest(self, query, rcode: dns.rcode = dns.rcode.REFUSED):
        response = dns.message.make_response(query)
        response.set_rcode(rcode)
        wire = response.to_wire(multi=False)
        length = len(wire).to_bytes(2, byteorder="big")
        self.request.sendall(length + wire)
    def handle(self):
        MAX_WIRE = 65535
        # MAX_WIRE = 2000 # For testing fragmentation
        RESERVED_TSIG = 300
        # create a var for setting the client ip in log messages
        peer = self.client_address[0]
        try:
            # Receive the entire message....
            sock = self.request  # TCP socket
            # Read 2-byte length prefix
            length_data = sock.recv(2)
            if len(length_data) < 2:
                return
            length = int.from_bytes(length_data, byteorder="big")
            wire = b""
            while len(wire) < length:
                chunk = sock.recv(length - len(wire))
                if not chunk:
                    return # connection closed
                wire += chunk
            # Parse the query
            query = None
            try:
                query = dns.message.from_wire(wire, keyring=self.server.keyring)
            # If TSIG signature doesnt match our key, refuse query:
            except dns.tsig.BadSignature as e:
                logger.warning(f"Request denied from {peer} failed TSIG verification: {e}")
                self.denyRequestBadTSIG(wire, dns.rcode.BADSIG)
                return
            # If TSIG Key used is not in our list, refuse query:
            except dns.message.UnknownTSIGKey as e:
                logger.warning(f"Request denied from {peer} with bad TSIG key: {e}")
                self.denyRequestBadTSIG(wire, dns.rcode.BADKEY)
                return
            # If there was no question in the query, refuse
            if len(query.question) != 1:
                self.denyRequest(query)
                return
            # Get the queried record name and type:
            qname = query.question[0].name
            qtype = query.question[0].rdtype
            dname = qname.to_text().rstrip(".")
            # Only process AXFR queries
            if qtype != dns.rdatatype.AXFR:
            #if qtype != dns.rdatatype.AXFR or qtype != dns.rdatatype.SOA:
                logger.warning(f"Request denied from {peer}: Request was not AXFR (Type: {qtype})")
                self.denyRequest(query)
                return
            # Identify TSIG key used
            if not query.had_tsig:
                logger.warning(f"Request denied from {peer}: No TSIG key used")
                self.denyRequest(query)
                return
            key_name = query.keyname.canonicalize().to_text()
            # Check if the key matches a view
            nb_view = self.server.tsig_view_map.get(key_name)
            if not nb_view:
                logger.warning(f"Request denied from {peer}: {key_name} does not match a view")
                self.denyRequest(query)
                return
            # Check if catalog zone
            if dname == "catz" or dname == f"{nb_view.name}.catz":
                zone = CatalogZone.create(dname, nb_view.name)
            else:
                zone = self.getZoneFromNB(dname, nb_view.name)
            # When zone was not found, let client know
            if not zone:
                logger.warning(f"Zone {dname} not found in view {nb_view.name}")
                self.denyRequest(query)
                return
            # 1. Prepare SOA + RRsets (identical to your code)
            soa_rrset = None
            rrsets = []
            for name, rdataset in zone.iterate_rdatasets():
                if not name.is_absolute():
                    name = name.concatenate(zone.origin)
                rrset = dns.rrset.from_rdata_list(name, rdataset.ttl, rdataset)
                if rdataset.rdtype == dns.rdatatype.SOA and soa_rrset is None:
                    soa_rrset = rrset
                else:
                    rrsets.append(rrset)
            if soa_rrset is None:
                logger.error(f"Zone {dname} has no SOA — aborting AXFR")
                return
            rrsets.insert(0, soa_rrset)  # Opening SOA
            rrsets.append(soa_rrset)  # Closing SOA
            # 2. Create a Renderer for the first message
            r = dns.renderer.Renderer(
                id=query.id, flags=(dns.flags.QR | dns.flags.AA), max_size=MAX_WIRE, origin=None
            )
            r.add_question(
                query.question[0].name,
                query.question[0].rdtype,
                query.question[0].rdclass,
            )
            # 3. Loop through RRsets
            tsig_ctx = None
            for rrset in rrsets:
                # logger.debug(f"Iterating over rrset {rrset}. tsig_ctx: {tsig_ctx}")
                try:
                    # logger.debug(f"Adding {rrset} to renderer object")
                    r.add_rrset(dns.renderer.ANSWER, rrset)
                    if r.max_size - len(r.output.getvalue()) < RESERVED_TSIG:
                        raise dns.exception.TooBig("TSIG wont fit")
                except dns.exception.TooBig:
                    # TSIG chain previous message
                    r.write_header()
                    tsig_ctx = r.add_multi_tsig(
                        ctx=tsig_ctx,
                        secret=self.server.keyring[query.keyname],
                        keyname=query.keyname,
                        fudge=300,
                        id=query.id,
                        tsig_error=0,
                        other_data=b"",
                        request_mac=r.mac if tsig_ctx else query.mac,
                    )
                    wire = r.get_wire()
                    self.request.sendall(len(wire).to_bytes(2, "big") + wire)
                    # Start new renderer
                    r = dns.renderer.Renderer(
                        id=query.id, flags=(dns.flags.QR | dns.flags.AA), max_size=MAX_WIRE, origin=None
                    )
                    r.add_question(
                        query.question[0].name,
                        query.question[0].rdtype,
                        query.question[0].rdclass,
                    )
                    r.add_rrset(dns.renderer.ANSWER, rrset)
            # 4. Final message with terminating TSIG
            r.write_header()
            # logger.debug(f"Final message. tsig_ctx: {tsig_ctx}")
            tsig_ctx = r.add_multi_tsig(
                ctx=tsig_ctx,
                secret=self.server.keyring[query.keyname],
                keyname=query.keyname,
                fudge=300,
                id=query.id,
                tsig_error=0,
                other_data=b"",
                # request_mac=r.mac if tsig_ctx else None,
                request_mac=r.mac if tsig_ctx else query.mac,
            )
            wire = r.get_wire()
            self.request.sendall(len(wire).to_bytes(2, "big") + wire)
            #logger.debug(f"Zone transfer request for {nb_view.name}/{dname} from {peer}")
            logger.debug(f"{peer} AXFR {nb_view.name}/{dname}")
        except Exception as e:
            logger.error(f"Error handling request from {peer}: {e}")
            import traceback
            traceback.print_exc()
 class TCPDNSServer(socketserver.TCPServer):
    allow_reuse_address = True
    def __init__(self, server_address, handler_class, keyring, tsig_view_map):
        super().__init__(server_address, handler_class)
        self.keyring = keyring
        self.tsig_view_map = tsig_view_map
 class UDPDNSServer(socketserver.UDPServer):
    allow_reuse_address = True
    def __init__(self, server_address, handler_class, keyring, tsig_view_map):
        super().__init__(server_address, handler_class)
        self.keyring = keyring
        self.tsig_view_map = tsig_view_map
 class Command(BaseCommand):
    help = "Run a minimal AXFR DNS server using NetBox DNS plugin data"
    def loadSettings(self):
        self.settings = settings.PLUGINS_CONFIG.get("netbox_plugin_bind_provisioner", None)
        if not self.settings:
            raise RuntimeError(
                "Command failed to initialize due to missing settings. Terminating Netbox."
            )
        self.tsig_keys = self.settings.get("tsig_keys", None)
        if not self.tsig_keys:
            raise RuntimeError(
                "tsig_keys variable not set in plugin settings."
            )
    # Load TSIG keys and map them to views
    def loadTSIGKeySettings(self):
        self.keyring = {}
        self.tsig_view_map = {}
        for view_name, data in self.tsig_keys.items():
            raw_key_name = data.get("keyname")
            secret = data.get("secret")
            algorithm_str = data.get("algorithm", "hmac-sha256")
            if not raw_key_name or not secret:
                logger.error(
                    f"Skipping TSIG key for view {view_name}: missing keyname or secret."
                )
                continue
            try:
                nb_view = View.objects.get(name=view_name)
            except View.DoesNotExist:
                logger.error(
                    f"Skipping TSIG key {raw_key_name}: view '{view_name}' not found."
                )
                continue
            # Normalize key name to absolute DNS name
            key_name_obj = dns.name.from_text(raw_key_name, origin=None).canonicalize()
            if not key_name_obj.is_absolute():
                key_name_obj = key_name_obj.concatenate(dns.name.root)
            key_name_str = key_name_obj.to_text()  # Will always include trailing do
            self.keyring[key_name_obj] = dns.tsig.Key(
                name=key_name_obj, secret=secret, algorithm=algorithm_str
            )
            self.tsig_view_map[key_name_str] = nb_view
            logger.debug(f"Loaded TSIG key: {key_name_str} view: {nb_view.name}")
        if not self.keyring:
            msg = "No TSIG keys found in database."
            logger.critical(msg)
            raise RuntimeError(msg)
    def add_arguments(self, parser):
        parser.add_argument('--port', type=int, default=5354, help='Port number to listen on')
        parser.add_argument('--address', type=str, default="0.0.0.0", help='IP to bind to')
    def handle(self, *args, **options):
        # Load parameters
        port = options['port']
        address = options['address']
        CatalogZone.initSerial()
        # Initialize settings
        self.loadSettings()
        #self.loadCatalogZoneSettings()
        self.loadTSIGKeySettings()
        # Following is temporary. Function and invocation can be deleted once v1.0 is reached.
        serial_file = self.settings.get("catalog_serial_file", None)
        if serial_file:
            CatalogZone.importLegacySerialFile(serial_file)
        udp_server = UDPDNSServer((address, port), UDPRequestHandler, self.keyring, self.tsig_view_map)
        tcp_server = TCPDNSServer((address, port), TCPRequestHandler, self.keyring, self.tsig_view_map)
        def run_udp_server(server):
            logger.debug(f"SOA endpoint listening on {address} udp/{port}")
            server.serve_forever()
        udp_thread = threading.Thread(target=run_udp_server, args=(udp_server,), daemon=True)
        udp_thread.start()
        logger.debug(f"AXFR endpoint listening on {address} tcp/{port}")
        tcp_server.serve_forever()
@@ -1,34 +0,0 @@
 # Generated by Django 5.2.8 on 2025-11-23 14:36
 import netbox.models.deletion
 import taggit.managers
 import utilities.json
 from django.db import migrations, models
 class Migration(migrations.Migration):
    initial = True
    dependencies = [
        ('extras', '0133_make_cf_minmax_decimal'),
    ]
    operations = [
        migrations.CreateModel(
            name='IntegerKeyValueSetting',
            fields=[
                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False)),
                ('created', models.DateTimeField(auto_now_add=True, null=True)),
                ('last_updated', models.DateTimeField(auto_now=True, null=True)),
                ('custom_field_data', models.JSONField(blank=True, default=dict, encoder=utilities.json.CustomFieldJSONEncoder)),
                ('key', models.CharField(max_length=64)),
                ('value', models.IntegerField()),
                ('tags', taggit.managers.TaggableManager(through='extras.TaggedItem', to='extras.Tag')),
            ],
            options={
                'abstract': False,
            },
            bases=(netbox.models.deletion.DeleteMixin, models.Model),
        ),
    ]
@@ -1,23 +0,0 @@
 from django.db import models
 import netbox.models
 import netbox_dns.models
 #class CatalogZoneSerial(models.Model):
 class IntegerKeyValueSetting(netbox.models.NetBoxModel):
    #view = models.ForeignKey(netbox_dns.models.View, on_delete=models.CASCADE)
    key    = models.CharField(max_length=64)
    value  = models.IntegerField()
    def __str__(self):
        #return f'{self.view.name}: {self.serial}'
        return f'{self.key}: {str(self.value)}'
 #class TSIGKey(netbox.models.NetBoxModel):
 #    view      = models.ForeignKey(netbox_dns.models.View, on_delete=models.CASCADE)
 #    name      = models.CharField(max_length=256)
 #    algorithm = models.CharField(max_length=25)
 #    secret    = models.CharField(max_length=50)
 #
 #    def __str__(self):
 #        return f'key "{self.name}" {{ algorithm {self.algorithm}; secret "{self.secret}"; }};'
Author	SHA1	Message	Date
Sven Luthi	41d48f2807	modified: netbox_dns_bridge/__init__.py modified: netbox_dns_bridge/catalog_zone_manager.py Fix wrong import in previous version and slight change to meachanism to create catz member identifier.	2026-07-15 17:48:49 +02:00
Sven Luthi	e50cfd7cb6	modified: netbox_dns_bridge/__init__.py Bump version	2026-07-14 17:51:37 +02:00
Sven Luthi	55f6622997	modified: README.md	2026-07-14 14:53:12 +02:00
Sven Luethi	fd8a5a0d9d	modified: netbox_dns_bridge/catalog_zone_manager.py modified: netbox_dns_bridge/management/commands/dns-transfer-endpoint.py modified: netbox_dns_bridge/request_handler.py modified: netbox_dns_bridge/signals/netbox_dns_zones.py Range of bug fixes and improvements	2026-07-13 13:41:29 +02:00
Sven Luethi	b72fa9b664	modified: README.md modified: netbox_dns_bridge/notify_handler.py	2026-07-11 02:46:17 +02:00
Sven Luethi	a5d163b4af	modified: netbox_dns_bridge/catalog_zone_manager.py modified: netbox_dns_bridge/notify_handler.py	2026-07-11 01:44:21 +02:00
Sven Luethi	f5791e94d5	modified: ../README.md modified: __init__.py modified: catalog_zone_manager.py modified: dns_server.py modified: notify_handler.py Adding serial to notify messages to allow client to determine state.	2026-07-11 00:04:45 +02:00
Sven Luethi	3eb17187b4	modified: netbox_dns_bridge/__init__.py modified: netbox_dns_bridge/catalog_zone_manager.py modified: netbox_dns_bridge/notify_handler.py	2026-07-10 22:05:51 +02:00
Sven Luethi	5747b044b6	modified: catalog_zone_manager.py modified: management/commands/dns-export-zone.py modified: management/commands/dns-export-zones.py modified: management/commands/dns-transfer-endpoint.py modified: notify_handler.py modified: request_handler.py Guard all db requests against broken database connections.	2026-07-10 17:10:19 +02:00
Sven Luthi	d18e0fc262	Update README	2026-07-08 16:21:55 +02:00
Sven Luethi	2a89f4ae75	modified: netbox_dns_bridge/request_handler.py modified: netbox_dns_bridge/signals/netbox_dns_zones.py 1. On zone deletion the catalog zone serial was not incremented, causing clients not to delete the zone until another zone is created/modified. Fixed using post_delete signal. 2. Even with the notify_clients feature disabled, the client IPs were still being tracked. This disables the unnecessary behavior. 3. _track_seen_client function in DNSBaseRequestHandler did not have the 'self' reference parameter, causing calls to fail. Fixed.	2026-06-13 00:19:45 +02:00
Sven Luethi	b78ae930e7	modified: README.md	2026-06-12 18:30:12 +02:00
Sven Luethi	e89a6dfbd6	modified: README.md	2026-06-11 17:24:57 +02:00
Sven Luethi	73544a4335	modified: README.md modified: netbox_dns_bridge/notify_handler.py modified: netbox_dns_bridge/request_handler.py modified: netbox_dns_bridge/signals/netbox_dns_zones.py Disable NOTIFY feature by default and add setting to enable it.	2026-06-11 16:33:47 +02:00
Sven Luethi	cb4886f032	new file: .flake8 deleted: pylint.conf Switch to flake8 for code checking	2026-06-11 16:33:47 +02:00
Sven Luethi	e5808b4a57	Merge branch 'main' into dev	2026-06-11 14:07:44 +02:00
Sven Luethi	547fe92b8b	Merge pull request #23 from peteeckel/fix/active-record-zone-check Replace explicit checks for STATUS_ACTIVE with the annotated "active" value	2026-06-11 10:39:13 +02:00
Peter Eckel	3f3426886e	Replace explicit checks for STATUS_ACTIVE with the annotated "active" value	2026-06-11 10:11:19 +02:00
Sven Luethi	3eef3b4d7b	modified: netbox_dns_bridge/__init__.py modified: netbox_dns_bridge/catalog_zone_manager.py modified: netbox_dns_bridge/dns_server.py modified: netbox_dns_bridge/logger.py new file: netbox_dns_bridge/migrations/0002_alter_integerkeyvaluesetting_options_and_more.py modified: netbox_dns_bridge/models.py new file: netbox_dns_bridge/notify_handler.py modified: netbox_dns_bridge/request_handler.py modified: netbox_dns_bridge/signals/__init__.py new file: netbox_dns_bridge/signals/netbox_dns_zones.py deleted: netbox_dns_bridge/signals/transfer_endpoint.py modified: netbox_dns_bridge/utils.py Implement notify mechanism	2026-06-11 00:32:26 +02:00
Sven Luethi	a4036c285c	modified: netbox_dns_bridge/catalog_zone_manager.py Move state to DB	2026-05-23 14:58:24 +02:00
Sven Luethi	1426ef2f70	modified: .gitignore Update gitignore	2026-05-22 12:02:43 +02:00
sven	ea1b5ee2b4	renamed: signals.py -> signals/transfer_endpoint.py new file: signals/__init__.py	2026-04-10 15:31:19 +02:00
sven	67ccf83b1c	modified: netbox_dns_bridge/__init__.py modified: netbox_dns_bridge/catalog_zone_manager.py modified: netbox_dns_bridge/dns_server.py new file: netbox_dns_bridge/logger.py modified: netbox_dns_bridge/management/commands/dns-transfer-endpoint.py modified: netbox_dns_bridge/request_handler.py Clean up logging	2026-04-10 15:08:10 +02:00
sven	da6a5e09a5	modified: netbox_dns_bridge/__init__.py Remove unneeded definition. modified: MANIFEST.in Correct path new file: netbox_dns_bridge/migrations/__init__.py Fixes missing migration. new file: netbox_dns_bridge/management/__init__.py new file: netbox_dns_bridge/management/commands/__init__.py Just in case	2026-04-10 13:23:37 +02:00
Sven Luthi	3eb58f9b29	modified: docs/install-systemd-service.md Correct naming in service unit	2026-04-10 11:16:58 +02:00
Sven Luthi	ad52457c48	modified: README.md Fix link alt text	2026-04-10 10:59:49 +02:00
Sven Luthi	9c3d7cce7e	modified: README.md	2026-04-09 19:18:35 +02:00
Sven Luthi	6418ed56e6	modified: README.md	2026-04-09 19:10:39 +02:00
Sven Luthi	fd16f7e701	modified: netbox_dns_bridge/__init__.py Bump version to 1.5.2	2026-04-09 18:51:54 +02:00
Sven Luthi	f926795d1b	modified: netbox_dns_bridge/request_handler.py Change query logging from debug to info. Seeing queries is very useful :)	2026-04-09 18:36:14 +02:00
Sven Luthi	eedc01303b	modified: netbox_dns_bridge/catalog_zone_manager.py modified: netbox_dns_bridge/request_handler.py modified: netbox_dns_bridge/utils.py Various little bug fixes. Analysed by AI but fixed by hand to ensure integrity.	2026-04-09 18:28:05 +02:00
Sven Luthi	646059bb07	modified: netbox_dns_bridge/signals.py Fix import path	2026-04-09 17:27:00 +02:00
Sven Luthi	f41b4cea56	modified: netbox_dns_bridge/request_handler.py Closes issue #15	2026-04-09 15:04:39 +02:00
Sven Luthi	3dec22b9f3	modified: README.md	2026-04-09 14:32:50 +02:00
Sven Luthi	b23c773bee	modified: README.md	2026-04-09 14:27:46 +02:00
Sven Luthi	53b12c9e15	modified: README.md - Improve post 1.0.7 upgrade guide. modified: pyproject.toml - Fix to licensing file reference.	2026-04-09 13:58:55 +02:00
Sven Luthi	d56a8f9140	modified: README.md	2026-04-08 20:32:00 +02:00
Sven Luthi	c32161b8a2	modified: netbox_dns_bridge/catalog_zone_manager.py modified: netbox_dns_bridge/dns_server.py modified: netbox_dns_bridge/management/commands/dns-export-zone.py modified: netbox_dns_bridge/management/commands/dns-export-zones.py modified: netbox_dns_bridge/management/commands/dns-settings.py modified: netbox_dns_bridge/management/commands/dns-transfer-endpoint.py modified: netbox_dns_bridge/migrations/0001_initial.py modified: netbox_dns_bridge/models.py modified: netbox_dns_bridge/request_handler.py modified: netbox_dns_bridge/signals.py modified: netbox_dns_bridge/utils.py Black code formating corrected	2026-04-08 20:14:38 +02:00
Sven Luthi	165a0faa67	modified: docs/architecture-overview.drawio modified: docs/architecture-overview.svg	2026-04-08 20:09:46 +02:00
Sven Luthi	5a20737ba9	modified: README.md	2026-04-08 20:09:46 +02:00
sven	f713719543	modified: pyproject.toml Fix paths after restructuring renamed: netbox_dns_bridge/management/commands/export-dns-zone.py -> netbox_dns_bridge/management/commands/dns-export-zone.py renamed: netbox_dns_bridge/management/commands/export-all-dns-zones.py -> netbox_dns_bridge/management/commands/dns-export-zones.py Unify command naming scheme new file: netbox_dns_bridge/migrations/0001_initial.py Adds the missing migration. Since the plugin was renamed this is also an opportunity to merge all changes into a single migration. renamed: netbox_dns_bridge/service/transfer/catalog_zone_manager.py -> netbox_dns_bridge/catalog_zone_manager.py renamed: netbox_dns_bridge/service/transfer/dns_server.py -> netbox_dns_bridge/dns_server.py new file: netbox_dns_bridge/management/commands/dns-settings.py modified: netbox_dns_bridge/management/commands/dns-transfer-endpoint.py renamed: netbox_dns_bridge/service/transfer/request_handler.py -> netbox_dns_bridge/request_handler.py deleted: netbox_dns_bridge/service/transfer/__init__.py Another restructure to simplify code re-use. New command dns-settings added to allow setting of catalog zone serial. This will be needed to migrate from previous versions.	2026-04-08 20:09:13 +02:00
sven	5f48472ba4	modified: README.md	2026-04-08 18:58:49 +02:00
sven	79ae6c2068	modified: README.md modified: netbox_dns_bridge/__init__.py modified: CHANGELOG.md Change versioning scheme to mach netbox-plugin-dns	2026-04-08 18:58:37 +02:00
Sven Luthi	756c491e28	Renaming Project and changing license	2026-04-08 10:24:24 +02:00
sven	4a1930a896	new file: CHANGELOG.md modified: README.md	2026-03-02 18:44:50 +01:00
Sven Luthi	5040ce70a0	modified: README.md modified: pyproject.toml deleted: requirements.txt	2026-02-18 16:59:37 +01:00
Sven Luthi	4d3b01127b	Bump to v1.0.7	2026-02-18 15:51:55 +01:00
Sven Luethi	997f36264a	modified: src/netbox_plugin_bind_provisioner/__init__.py Bumping version to v1.0.6	2026-02-09 16:54:17 +01:00
Sven Luethi	19a946c880	- Split bind transfer command into multiple files for better code readability. - Rename bind-transfer-endpoint command -> dns-transfer-endpoint.	2026-02-05 12:27:28 +01:00
Sven Luethi	9afdfe869b	- Store catz member zone identifiers in database, linked to the corresponding zone object. - Catz member identifiers are created from uuid encoded in base32, lower-cased, and padding removed. - On endpoint startup, make sure all zones have a catz identifier assigned. If not, create them. - Use signals to create or update a zone's catz identifier.	2026-02-05 12:26:55 +01:00
Sven Luethi	1fae3bfe54	Adds back the changes made to support ipv6 in commit `8fba131230` but that were reverted with commit `ca51a6054d` to allow proper merging of another complex PR. Closes #11 again Also includes a small bug fix that was added with commit `6bbb2e9905` but that was also temporarily reverted with `45f9631a98`.	2026-01-31 09:43:19 +01:00
Sven Luethi	562f54d481	Merge pull request #12 from spamik/support-tcp-soa Support SOA request on TCP by merging the dns handling while leaving the transport handling in protocol specific handlers (partially). Further review pending	2026-01-31 09:08:42 +01:00
Sven Luethi	ca51a6054d	This reverts commit `8fba131230`.	2026-01-31 09:01:04 +01:00
Sven Luethi	45f9631a98	This reverts commit `6bbb2e9905`.	2026-01-31 09:00:44 +01:00
spm	0d041a0830	Handle more DNS requests via one TCP connection	2026-01-29 15:58:32 +01:00
Sven Luethi	6bbb2e9905	modified: src/netbox_plugin_bind_provisioner/management/commands/bind-transfer-endpoint.py Catches a further exception if the wrong algorithm is specified for the tsig key used.	2026-01-29 11:11:49 +01:00
Sven Luethi	8fba131230	modified: src/netbox_plugin_bind_provisioner/management/commands/bind-transfer-endpoint.py Fixes issue #11 (IPv6 support)	2026-01-29 11:10:31 +01:00
spm	a9dbbe8c88	Support SOA request on TCP - unified handling of DNS queries on TCP and UDP channels - as a result it now responds on SOA requests over TCP	2026-01-28 17:35:58 +01:00
Sven Luethi	9a2b0a2c2b	modified: src/netbox_plugin_bind_provisioner/__init__.py Bump version to v1.0.5	2026-01-09 14:46:09 +01:00
Sven Luethi	55d891f38c	modified: src/netbox_plugin_bind_provisioner/management/commands/bind-transfer-endpoint.py Slight changes to previous commit: 1. Stop converting the zone ID to string for catalog zone PTR record creation and simply use its int type. 2. Extend padding of ID in catalog zone PTR record from 6 digits to 9. Auto-incrementing of zone IDs may create larger IDs then expected if the turn-over of zones is high. Precautionary measure. 3. Fix catalog zone SOA record creation - A slight mistake was introduced in previous commit that would render the set the MNAME field to "invalid.zones.catz." rather than the intended "invalid." value. 4. Run code through black formater to stay compliant.	2026-01-09 13:36:08 +01:00
Sven Luethi	1375bbb7e3	Merge pull request #9 from jpmens/ttl_mname Use TTL=0, alter MNAME,RNAME and rename PTR owners	2026-01-09 13:19:44 +01:00
Jan-Piet Mens	723566db70	Use TTL=0, alter MNAME,RNAME and rename PTR owners I've opted for a slightly shorter name for PTR owner names The result looks like this: ``` catz. 0 IN SOA invalid. invalid. 23 60 10 1209600 0 zid-000002.zones.catz. 0 IN PTR 2.0.192.in-addr.arpa. zid-000001.zones.catz. 0 IN PTR example.net. zid-000003.zones.catz. 0 IN PTR jpmens.net. zid-000004.zones.catz. 0 IN PTR tcp53.ch. catz. 0 IN NS invalid. version.catz. 0 IN TXT "2" ```	2026-01-09 08:53:59 +01:00
Sven Luethi	e8450c90da	modified: README.md modified: src/netbox_plugin_bind_provisioner/management/commands/bind-transfer-endpoint.py Remove code and description that imported old catz serials from flat files that were used before switch to DB model. Code and docs no longer applicable so removed.	2026-01-09 02:59:36 +01:00
Sven Luethi	ae6bb3c1b6	modified: README.md	2026-01-09 02:50:58 +01:00
Sven Luthi	0028ba8d80	new file: src/netbox_plugin_bind_provisioner/migrations/0002_alter_integerkeyvaluesetting_options_and_more.py modified: src/netbox_plugin_bind_provisioner/models.py Remove the settings model from Netbox's Permission system as these values are for internal use of the plugin only.	2025-12-18 15:53:38 +01:00
Sven Luthi	78ed040495	modified: README.md Update readme	2025-12-18 15:03:10 +01:00
Sven Luthi	20064ec9bd	modified: src/netbox_plugin_bind_provisioner/__init__.py new file: src/netbox_plugin_bind_provisioner/management/commands/export-all-dns-zones.py new file: src/netbox_plugin_bind_provisioner/management/commands/export-dns-zone.py new file: src/netbox_plugin_bind_provisioner/utils.py Adds export commands for zones to bind zone files and bump version to v1.0.4	2025-12-11 15:59:21 +01:00
Sven Luethi	6ac1548eef	modified: src/netbox_plugin_bind_provisioner/__init__.py modified: src/netbox_plugin_bind_provisioner/management/commands/bind-transfer-endpoint.py Improve TXT record formating.	2025-12-01 19:22:11 +01:00
Sven Luethi	d8f4b83c2a	modified: src/netbox_plugin_bind_provisioner/__init__.py modified: src/netbox_plugin_bind_provisioner/management/commands/bind-transfer-endpoint.py Allows for TXT records to be added without quotation. This will apply the correct quoting and chunking where needed.	2025-11-29 13:36:18 +01:00
Sven Luethi	fa032b1ea3	modified: src/netbox_plugin_bind_provisioner/__init__.py modified: src/netbox_plugin_bind_provisioner/management/commands/bind-transfer-endpoint.py Fixes bug: TXT records were truncated instead of chunked when larger then 255 characters and on semicolons.	2025-11-28 18:52:00 +01:00
Sven Luethi	e6aaa3a54d	modified: src/netbox_plugin_bind_provisioner/__init__.py modified: src/netbox_plugin_bind_provisioner/management/commands/bind-transfer-endpoint.py modified: src/netbox_plugin_bind_provisioner/migrations/0001_initial.py modified: src/netbox_plugin_bind_provisioner/models.py Run code through black formater and bump version string to v1.0.0	2025-11-27 11:26:35 +01:00
Sven Luethi	eee5395ea6	modified: src/netbox_plugin_bind_provisioner/management/commands/bind-transfer-endpoint.py Fixes custom properties in catalog zone, adding dnssec policy as group property instead (as spcified in RFC9432)	2025-11-27 11:25:30 +01:00
		`@@ -1 +1 @@`
			`recursive-include netbox_bind_provisioner *.py`				`recursive-include netbox_dns_bridge *.py`
		`@@ -1,2 +0,0 @@`
			`netbox-plugin-dns>=1.2.0`
			`dnspython>=2.8.0`