DNS settings first commit and static host management

dns/admin.py

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+from django.contrib import admin
+
+# Register your models here.

dns/apps.py

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+from django.apps import AppConfig
+
+
+class DnsConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'dns'

dns/forms.py

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+import requests
+from .models import DNSSettings, StaticHost
+
+from django import forms
+from crispy_forms.helper import FormHelper
+from crispy_forms.layout import Layout, Fieldset, ButtonHolder, Submit, Div, Field, HTML
+from crispy_forms.bootstrap import FormActions, StrictButton
+from django.core.exceptions import ValidationError
+from datetime import datetime
+from django.core.exceptions import ValidationError
+import re
+
+
+
+class StaticHostForm(forms.ModelForm):
+    class Meta:
+        model = StaticHost
+        fields = ['hostname', 'ip_address']
+
+    def __init__(self, *args, **kwargs):
+        super(StaticHostForm, self).__init__(*args, **kwargs)
+        self.helper = FormHelper()
+        self.helper.form_method = 'post'
+        if self.instance.pk:
+            delete_html = "<a href='javascript:void(0)' class='btn btn-outline-danger' data-command='delete' onclick='openCommandDialog(this)'>Delete</a>"
+        else:
+            delete_html = ''
+        self.helper.layout = Layout(
+            Fieldset(
+                'Static DNS',
+                Div(
+                    Field('hostname', css_class='form-control'),
+                    Field('ip_address', css_class='form-control'),
+                    css_class='col-md-6'
+                ),
+            ),
+            FormActions(
+                Submit('save', 'Save', css_class='btn btn-primary'),
+                HTML('<a class="btn btn-outline-primary" href="/dns/">Back</a> '),
+                HTML(delete_html),
+            )
+        )
+
+    def clean(self):
+        hostname = self.cleaned_data.get('hostname')
+        if hostname:
+            regex = r'^[a-zA-Z][a-zA-Z0-9-\.]*[a-zA-Z0-9]$'
+            if not re.match(regex, hostname):
+                raise ValidationError('Invalid hostname')
+        return

dns/migrations/0001_initial.py

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+# Generated by Django 5.0.4 on 2024-04-26 17:42
+
+import uuid
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='DNSSettings',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('name', models.CharField(default='dns_settings', max_length=100)),
+                ('dns_primary', models.GenericIPAddressField(blank=True, default='1.1.1.1', null=True)),
+                ('dns_secondary', models.GenericIPAddressField(blank=True, default='1.0.0.1', null=True)),
+                ('pending_changes', models.BooleanField(default=True)),
+                ('created', models.DateTimeField(auto_now_add=True)),
+                ('updated', models.DateTimeField(auto_now=True)),
+                ('uuid', models.UUIDField(default=uuid.uuid4, editable=False, unique=True)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='StaticHost',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('hostname', models.CharField(max_length=100, unique=True)),
+                ('ip_address', models.GenericIPAddressField()),
+                ('created', models.DateTimeField(auto_now_add=True)),
+                ('updated', models.DateTimeField(auto_now=True)),
+                ('uuid', models.UUIDField(default=uuid.uuid4, editable=False, unique=True)),
+            ],
+        ),
+    ]

dns/models.py

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+from django.db import models
+import uuid
+
+
+class DNSSettings(models.Model):
+    name = models.CharField(default='dns_settings', max_length=100)
+    dns_primary = models.GenericIPAddressField(blank=True, null=True, default='1.1.1.1')
+    dns_secondary = models.GenericIPAddressField(blank=True, null=True, default='1.0.0.1')
+    pending_changes = models.BooleanField(default=True)
+
+    created = models.DateTimeField(auto_now_add=True)
+    updated = models.DateTimeField(auto_now=True)
+    uuid = models.UUIDField(unique=True, default=uuid.uuid4, editable=False)
+
+
+class StaticHost(models.Model):
+    hostname = models.CharField(max_length=100, unique=True)
+    ip_address = models.GenericIPAddressField()
+
+    created = models.DateTimeField(auto_now_add=True)
+    updated = models.DateTimeField(auto_now=True)
+    uuid = models.UUIDField(unique=True, default=uuid.uuid4, editable=False)
+
+    def __str__(self):
+        return self.hostname

dns/tests.py

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+from django.test import TestCase
+
+# Create your tests here.

dns/views.py

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+from django.contrib.auth.decorators import login_required
+from django.shortcuts import render, get_object_or_404, redirect
+from django.contrib import messages
+from user_manager.models import UserAcl
+from .models import DNSSettings, StaticHost
+from .forms import StaticHostForm
+
+
+@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')
+    context = {
+        'dns_settings': dns_settings,
+        'static_host_list': static_host_list,
+    }
+    return render(request, 'dns/static_host_list.html', context=context)
+
+
+@login_required
+def view_manage_static_host(request):
+    if not UserAcl.objects.filter(user=request.user).filter(user_level__gte=40).exists():
+        return render(request, 'access_denied.html', {'page_title': 'Access Denied'})
+    dns_settings, _ = DNSSettings.objects.get_or_create(name='dns_settings')
+    if request.GET.get('uuid'):
+        static_dns = get_object_or_404(StaticHost, uuid=request.GET.get('uuid'))
+        if request.GET.get('action') == 'delete':
+            if request.GET.get('confirmation') == 'delete':
+                static_dns.delete()
+                dns_settings.pending_changes = True
+                dns_settings.save()
+                messages.success(request, 'Static DNS deleted successfully')
+                return redirect('/dns/')
+            else:
+                messages.warning(request, 'Static DNS not deleted|Invalid confirmation')
+                return redirect('/dns/')
+    else:
+        static_dns = None
+
+    form = StaticHostForm(request.POST or None, instance=static_dns)
+    if form.is_valid():
+        form.save()
+        dns_settings.pending_changes = True
+        dns_settings.save()
+        messages.success(request, 'Static DNS saved successfully')
+        return redirect('/dns/')
+
+    context = {
+        'dns_settings': dns_settings,
+        'form': form,
+        'instance': static_dns,
+    }
+    return render(request, 'generic_form.html', context=context)