DNS apply configuration

dns/functions.py

@@ -0,0 +1,33 @@
+from .models import DNSSettings, StaticHost
+
+
+def generate_unbound_config():
+    dns_settings = DNSSettings.objects.get(name='dns_settings')
+    static_hosts = StaticHost.objects.all()
+    if dns_settings.dns_primary:
+        do_not_query_localhost = 'yes'
+        forward_zone = f'\nforward-zone:\n    name: "."\n    forward-addr: {dns_settings.dns_primary}\n'
+        if dns_settings.dns_secondary:
+            forward_zone += f'    forward-addr: {dns_settings.dns_secondary}\n'
+    else:
+        do_not_query_localhost = 'no'
+        forward_zone = ''
+
+
+    unbound_config = f'''
+server:
+    interface: 0.0.0.0
+    port: 53
+    access-control: 0.0.0.0/0 allow
+    do-ip4: yes
+    do-ip6: no
+    do-udp: yes
+    local-zone: "local." static
+    do-not-query-localhost: {do_not_query_localhost}
+    verbosity: 1
+    recursion: yes    
+'''
+    unbound_config += forward_zone
+    for static_host in static_hosts:
+        unbound_config += f'local-data: "{static_host.hostname}. IN A {static_host.ip_address}"\n'
+    return unbound_config

dns/views.py

@@ -4,12 +4,28 @@ from django.contrib import messages
 from user_manager.models import UserAcl
 from .models import DNSSettings, StaticHost
 from .forms import StaticHostForm, DNSSettingsForm
+from .functions import generate_unbound_config
+from django.conf import settings
+
+
+@login_required
+def view_apply_dns_config(request):
+    dns_settings, _ = DNSSettings.objects.get_or_create(name='dns_settings')
+    dns_settings.pending_changes = False
+    dns_settings.save()
+    unbound_config = generate_unbound_config()
+    with open(settings.UNBOUND_CONFIG, 'w') as f:
+        f.write(unbound_config)
+    messages.success(request, 'DNS settings applied successfully')
+    return redirect('/dns/')
 
 
 @login_required
 def view_static_host_list(request):
     dns_settings, _ = DNSSettings.objects.get_or_create(name='dns_settings')
     static_host_list = StaticHost.objects.all().order_by('hostname')
+    if dns_settings.pending_changes:
+        messages.warning(request, 'Pending Changes|There are pending DNS changes that have not been applied')
     context = {
         'dns_settings': dns_settings,
         'static_host_list': static_host_list,
@@ -25,8 +41,7 @@ def view_manage_dns_settings(request):
     form = DNSSettingsForm(request.POST or None, instance=dns_settings)
     if form.is_valid():
         form.save()
-        messages.success(request, 'DNS settings saved successfully')
+        return redirect('/dns/apply_config/')
-        return redirect('/dns/')
 
     form_description_content = '''
         <strong>DNS Forwarders</strong>

wireguard_webadmin/settings.py

@@ -131,7 +131,7 @@ STATICFILES_DIRS = [
 
 # Default primary key field type
 # https://docs.djangoproject.com/en/5.0/ref/settings/#default-auto-field
-
+UNBOUND_CONFIG = '/config/unbound.conf'
 DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
 
 WIREGUARD_WEBADMIN_VERSION = 9607

wireguard_webadmin/urls.py

@@ -24,7 +24,7 @@ from accounts.views import view_create_first_user, view_login, view_logout
 from wireguard_tools.views import export_wireguard_configs, download_config_or_qrcode, restart_wireguard_interfaces
 from api.views import wireguard_status, cron_check_updates, cron_update_peer_latest_handshake, routerfleet_get_user_token, routerfleet_authenticate_session
 from firewall.views import view_redirect_rule_list, manage_redirect_rule, view_firewall_rule_list, manage_firewall_rule, view_manage_firewall_settings, view_generate_iptables_script, view_reset_firewall, view_firewall_migration_required
-from dns.views import view_static_host_list, view_manage_static_host, view_manage_dns_settings
+from dns.views import view_static_host_list, view_manage_static_host, view_manage_dns_settings, view_apply_dns_config
 
 
 urlpatterns = [
@@ -32,6 +32,7 @@ urlpatterns = [
     path('', view_welcome, name='welcome'),
     path('status/', view_wireguard_status, name='wireguard_status'),
     path('dns/', view_static_host_list, name='static_host_list'),
+    path('dns/apply_config/', view_apply_dns_config, name='apply_dns_config'),
     path('dns/manage_static_host/', view_manage_static_host, name='manage_static_host'),
     path('dns/manage_settings/', view_manage_dns_settings, name='manage_dns_settings'),
     path('peer/list/', view_wireguard_peer_list, name='wireguard_peer_list'),