DNS Container and docker compose

build_and_push.sh

@@ -4,6 +4,7 @@ IMAGES=(
   "eduardosilva/wireguard_webadmin:latest"
   "eduardosilva/wireguard_webadmin_cron:latest"
   "eduardosilva/wireguard_webadmin_nginx:latest"
+  "eduardosilva/wireguard_webadmin_dns:latest"
 )
 
 build_images() {

containers/dnsmasq/Dockerfile-dnsmasq

@@ -0,0 +1,13 @@
+FROM ubuntu:latest
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+RUN apt-get update && \
+    apt-get install -y dnsmasq nano inotify-tools psmisc && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
+
+COPY entrypoint.sh /entrypoint.sh
+RUN chmod +x /entrypoint.sh
+
+ENTRYPOINT ["/entrypoint.sh"]

containers/dnsmasq/entrypoint.sh

@@ -0,0 +1,40 @@
+#!/bin/bash
+CONFIG_FILE="/etc/dnsmasq/wireguard_webadmin_dns.conf"
+DEFAULT_CONFIG_CONTENT="
+no-dhcp-interface=
+server=1.1.1.1
+server=1.0.0.1
+
+listen-address=0.0.0.0
+bind-interfaces
+"
+
+create_default_config() {
+    if [ ! -f "$CONFIG_FILE" ]; then
+        echo "Config file not found, creating a new one..."
+        echo "$DEFAULT_CONFIG_CONTENT" > "$CONFIG_FILE"
+    fi
+}
+
+start_dnsmasq() {
+    dnsmasq -C "$CONFIG_FILE" &
+    while inotifywait -e modify "$CONFIG_FILE"; do
+        echo "Configuration changed, reloading dnsmasq..."
+        pkill dnsmasq
+        sleep 5
+        dnsmasq -C "$CONFIG_FILE" &
+    done
+}
+
+
+handle_sigint() {
+    echo "SIGINT received. Stopping inotifywait and dnsmasq..."
+    pkill inotifywait
+    pkill dnsmasq
+    exit 0
+}
+
+trap handle_sigint SIGINT
+
+create_default_config
+start_dnsmasq

dns/forms.py

@@ -21,6 +21,7 @@ class DNSSettingsForm(forms.ModelForm):
         self.helper = FormHelper()
         self.fields['dns_primary'].label = 'Primary Resolver'
         self.fields['dns_secondary'].label = 'Secondary Resolver'
+        self.fields['dns_primary'].required = True
         self.helper.form_method = 'post'
         self.helper.layout = Layout(
             Fieldset(

dns/functions.py

@@ -25,9 +25,51 @@ server:
     local-zone: "local." static
     do-not-query-localhost: {do_not_query_localhost}
     verbosity: 1
-    recursion: yes    
 '''
     unbound_config += forward_zone
+
+    if static_hosts:
+        unbound_config += '\nlocal-zone: "." transparent\n'
         for static_host in static_hosts:
             unbound_config += f'    local-data: "{static_host.hostname}. IN A {static_host.ip_address}"\n'
     return unbound_config
+
+
+def generate_dnsdist_config():
+    dns_settings = DNSSettings.objects.get(name='dns_settings')
+    static_hosts = StaticHost.objects.all()
+    dnsdist_config = "setLocal('0.0.0.0:53')\n"
+    dnsdist_config += "setACL('0.0.0.0/0')\n"
+
+    if dns_settings.dns_primary:
+        dnsdist_config += f"newServer({{address='{dns_settings.dns_primary}', pool='upstreams'}})\n"
+    if dns_settings.dns_secondary:
+        dnsdist_config += f"newServer({{address='{dns_settings.dns_secondary}', pool='upstreams'}})\n"
+
+    if static_hosts:
+        dnsdist_config += "addAction(makeRule(''), PoolAction('staticHosts'))\n"
+        for static_host in static_hosts:
+            dnsdist_config += f"addLocal('{static_host.hostname}', '{static_host.ip_address}')\n"
+
+    return dnsdist_config
+
+
+def generate_dnsmasq_config():
+    dns_settings = DNSSettings.objects.get(name='dns_settings')
+    static_hosts = StaticHost.objects.all()
+    dnsmasq_config = f'''
+no-dhcp-interface=
+listen-address=0.0.0.0
+bind-interfaces
+    
+'''
+    if dns_settings.dns_primary:
+        dnsmasq_config += f'server={dns_settings.dns_primary}\n'
+    if dns_settings.dns_secondary:
+        dnsmasq_config += f'server={dns_settings.dns_secondary}\n'
+
+    if static_hosts:
+        dnsmasq_config += '\n'
+        for static_host in static_hosts:
+            dnsmasq_config += f'address=/{static_host.hostname}/{static_host.ip_address}\n'
+    return dnsmasq_config

dns/views.py

@@ -4,7 +4,7 @@ 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 .functions import generate_dnsmasq_config
 from django.conf import settings
 
 
@@ -13,9 +13,9 @@ 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)
+    dnsmasq_config = generate_dnsmasq_config()
+    with open(settings.DNS_CONFIG_FILE, 'w') as f:
+        f.write(dnsmasq_config)
     messages.success(request, 'DNS settings applied successfully')
     return redirect('/dns/')
 
@@ -48,12 +48,7 @@ def view_manage_dns_settings(request):
         <p>
         All DNS queries will be forwarded to the primary resolver. If the primary resolver is not available, the secondary resolver will be used.
         </p>
-        <strong>
-        Local DNS Resolution
-        </strong>
-        <p>
-        If no forwarders are specified, the system will locally resolve DNS queries. This can lead to slower DNS resolution times, but can be useful in certain scenarios.
-        </p>
+        
         '''
 
     context = {

docker-compose-build.yml

@@ -11,6 +11,12 @@ services:
       context: ./cron
       dockerfile: Dockerfile-cron
 
+  wireguard-webadmin-dns:
+    image: eduardosilva/wireguard_webadmin_dns:latest
+    build:
+      context: ./containers/dnsmasq
+      dockerfile: Dockerfile-dnsmasq
+
   wireguard-webadmin-nginx:
     image: eduardosilva/wireguard_webadmin_nginx:latest
     build:

docker-compose-no-nginx-dev.yml

@@ -8,10 +8,12 @@ services:
     environment:
       - SERVER_ADDRESS=127.0.0.1
       - DEBUG_MODE=True
+      - COMPOSE_VERSION=02b
     volumes:
       - wireguard:/etc/wireguard
       - static_volume:/app_static_files/
       - .:/app
+      - dnsmasq_conf:/etc/dnsmasq
     ports:
       # Do not directly expose the Django port to the internet, use some kind of reverse proxy with SSL.
       - "127.0.0.1:8000:8000"
@@ -38,6 +40,16 @@ services:
     depends_on:
       - wireguard-webadmin
 
+  wireguard-webadmin-dns:
+    container_name: wireguard-webadmin-dns
+    restart: unless-stopped
+    build:
+      context: ./containers/dnsmasq
+      dockerfile: Dockerfile-dnsmasq
+    volumes:
+      - dnsmasq_conf:/etc/dnsmasq/
+
 volumes:
   static_volume: 
   wireguard:
+  dnsmasq_conf:

docker-compose-no-nginx.yml

@@ -7,9 +7,11 @@ services:
     environment:
       - SERVER_ADDRESS=127.0.0.1
       - DEBUG_MODE=True
+      - COMPOSE_VERSION=02b
     volumes:
       - wireguard:/etc/wireguard
       - static_volume:/app_static_files/
+      - dnsmasq_conf:/etc/dnsmasq
     ports:
       # Do not directly expose the Django port to the internet, use some kind of reverse proxy with SSL.
       - "127.0.0.1:8000:8000"
@@ -33,6 +35,14 @@ services:
     depends_on:
       - wireguard-webadmin
 
+  wireguard-webadmin-dns:
+    container_name: wireguard-webadmin-dns
+    restart: unless-stopped
+    image: eduardosilva/wireguard_webadmin_dns:latest
+    volumes:
+      - dnsmasq_conf:/etc/dnsmasq/
+
 volumes:
   static_volume:
   wireguard:
+  dnsmasq_conf:

docker-compose.yml

@@ -7,9 +7,11 @@ services:
     environment:
       - SERVER_ADDRESS=${SERVER_ADDRESS}
       - DEBUG_MODE=${DEBUG_MODE}
+      - COMPOSE_VERSION=02b
     volumes:
       - wireguard:/etc/wireguard
       - static_volume:/app_static_files/
+      - dnsmasq_conf:/etc/dnsmasq
     ports:
       # Do not directly expose the Django port to the internet, use the reverse proxy below instead
       # - "127.0.0.1:8000:8000"
@@ -33,6 +35,13 @@ services:
     depends_on:
       - wireguard-webadmin
 
+  wireguard-webadmin-dns:
+    container_name: wireguard-webadmin-dns
+    restart: unless-stopped
+    image: eduardosilva/wireguard_webadmin_dns:latest
+    volumes:
+      - dnsmasq_conf:/etc/dnsmasq/
+
   wireguard-webadmin-nginx:
     container_name: wireguard-webadmin-nginx
     restart: unless-stopped
@@ -48,3 +57,4 @@ volumes:
   static_volume:
   https_cert:
   wireguard:
+  dnsmasq_conf:

entrypoint.sh

@@ -2,6 +2,11 @@
 
 set -e
 
+if [[ "$COMPOSE_VERSION" != "02b" ]]; then
+    echo "ERROR: Please upgrade your docker compose file. Exiting."
+    exit 1
+fi
+
 if [ -z "$SERVER_ADDRESS" ]; then
     echo "SERVER_ADDRESS environment variable is not set. Exiting."
     exit 1

firewall/tools.py

@@ -143,6 +143,19 @@ def export_user_firewall():
     return "".join(iptables_rules)
 
 
+def generate_redirect_dns_rules():
+    wireguard_instance_list = WireGuardInstance.objects.all()
+    firewall_settings, firewall_settings_created = FirewallSettings.objects.get_or_create(name='global')
+    dns_redirect_rules = ''
+    for wireguard_instance in wireguard_instance_list:
+        dns_redirect_rules += f"# DNS Redirect for instance wg{wireguard_instance.instance_id}\n"
+        dns_redirect_rules += f"iptables -t nat -A WGWADM_PREROUTING  -i wg{wireguard_instance.instance_id} -d {wireguard_instance.address} -p udp --dport 53 -j DNAT --to $DNS_IP:53\n"
+        dns_redirect_rules += f"iptables -t nat -A WGWADM_PREROUTING  -i wg{wireguard_instance.instance_id} -d {wireguard_instance.address} -p tcp --dport 53 -j DNAT --to $DNS_IP:53\n"
+        dns_redirect_rules += f"iptables -t nat -A WGWADM_POSTROUTING -i wg{wireguard_instance.instance_id} -o {firewall_settings.wan_interface} -d $DNS_IP -j MASQUERADE\n"
+        dns_redirect_rules += f"iptables -t filter -A WGWADM_FORWARD  -i wg{wireguard_instance.instance_id} -o {firewall_settings.wan_interface} -d $DNS_IP -j ACCEPT\n"
+    return dns_redirect_rules
+
+
 def generate_firewall_header():
     firewall_settings, firewall_settings_created = FirewallSettings.objects.get_or_create(name='global')
     header = f'''#!/bin/bash
@@ -151,6 +164,10 @@ def generate_firewall_header():
 #
 # This script was generated by WireGuard_WebAdmin on {timezone.now().strftime('%Y-%m-%d %H:%M:%S %Z')}
 #
+DNS_IP=$(host wireguard-webadmin-dns | grep -oP 'has address \K[\d\.]+')
+if [ -z "$DNS_IP" ]; then
+    DNS_IP="127.0.0.250"
+fi
 
 iptables -t nat    -N WGWADM_POSTROUTING >> /dev/null 2>&1
 iptables -t nat    -N WGWADM_PREROUTING  >> /dev/null 2>&1

templates/wireguard/wireguard_manage_server.html

@@ -98,11 +98,11 @@
                             <div class="form-row">
                                 <div class="form-group col-md-6">
                                     <label for="{{ form.dns_primary.id_for_label }}">{{ form.dns_primary.label }}</label>
-                                    <input type="text" class="form-control" id="{{ form.dns_primary.id_for_label }}" name="{{ form.dns_primary.html_name }}" placeholder="1.1.1.1" value="{{ form.dns_primary.value|default_if_none:'' }}">
+                                    <input type="text" class="form-control" id="{{ form.dns_primary.id_for_label }}" name="{{ form.dns_primary.html_name }}" value="{{ form.dns_primary.value|default_if_none:'' }}">
                                 </div>
                                 <div class="form-group col-md-6">
                                     <label for="{{ form.dns_secondary.id_for_label }}">{{ form.dns_secondary.label }}</label>
-                                    <input type="text" class="form-control" id="{{ form.dns_secondary.id_for_label }}" name="{{ form.dns_secondary.html_name }}" placeholder="1.0.0.1" value="{{ form.dns_secondary.value|default_if_none:'' }}">
+                                    <input type="text" class="form-control" id="{{ form.dns_secondary.id_for_label }}" name="{{ form.dns_secondary.html_name }}" value="{{ form.dns_secondary.value|default_if_none:'' }}">
                                 </div>
                                 
                             </div>

wireguard/forms.py

@@ -16,7 +16,7 @@ class WireGuardInstanceForm(forms.ModelForm):
     post_down = forms.CharField(label='Post Down', required=False)
     peer_list_refresh_interval = forms.IntegerField(label='Web Refresh Interval', initial=20)
     dns_primary = forms.GenericIPAddressField(label='Primary DNS', initial='1.1.1.1', required=False)
-    dns_secondary = forms.GenericIPAddressField(label='Secondary DNS', initial='1.0.0.1', required=False)
+    dns_secondary = forms.GenericIPAddressField(label='Secondary DNS', initial='', required=False)
 
     class Meta:
         model = WireGuardInstance

wireguard/views.py

@@ -60,6 +60,7 @@ def generate_instance_defaults():
         'private_key': new_private_key,
         'public_key': new_public_key,
         'address': new_address,
+        'dns_primary': new_address,
         'netmask': 24,
         'persistent_keepalive': 25,
         'hostname': 'myserver.example.com',

wireguard_tools/views.py

@@ -4,7 +4,8 @@ import qrcode
 import subprocess
 from django.http import HttpResponse
 from django.shortcuts import redirect, get_object_or_404, render
-from firewall.tools import generate_firewall_header, generate_firewall_footer, generate_port_forward_firewall, export_user_firewall
+from firewall.tools import generate_firewall_header, generate_firewall_footer, generate_port_forward_firewall, \
+    export_user_firewall, generate_redirect_dns_rules
 from user_manager.models import UserAcl
 from wireguard.models import WireGuardInstance, Peer, PeerAllowedIP
 from firewall.models import RedirectRule
@@ -55,6 +56,7 @@ def generate_peer_config(peer_uuid):
 
 def export_firewall_configuration():
     firewall_content = generate_firewall_header()
+    firewall_content += generate_redirect_dns_rules()
     firewall_content += generate_port_forward_firewall()
     firewall_content += export_user_firewall()
     firewall_content += generate_firewall_footer()

wireguard_webadmin/settings.py

@@ -131,9 +131,9 @@ STATICFILES_DIRS = [
 
 # Default primary key field type
 # https://docs.djangoproject.com/en/5.0/ref/settings/#default-auto-field
-UNBOUND_CONFIG = '/config/unbound.conf'
+DNS_CONFIG_FILE = '/etc/dnsmasq/wireguard_webadmin_dns.conf'
 DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
 
-WIREGUARD_WEBADMIN_VERSION = 9607
+WIREGUARD_WEBADMIN_VERSION = 9609
 
 from wireguard_webadmin.production_settings import *

wireguard_webadmin/urls.py

@@ -28,7 +28,7 @@ from dns.views import view_static_host_list, view_manage_static_host, view_manag
 
 
 urlpatterns = [
-    path('admin/', admin.site.urls),
+    # path('admin/', admin.site.urls),
     path('', view_welcome, name='welcome'),
     path('status/', view_wireguard_status, name='wireguard_status'),
     path('dns/', view_static_host_list, name='static_host_list'),