Close security loopholes to make non-superuser admins usable

allianceauth/groupmanagement/admin.py

@@ -1,19 +1,20 @@
-from django import forms
 from django.apps import apps
-from django.contrib.auth.models import Permission
 from django.contrib import admin
-from django.contrib.auth.models import Group as BaseGroup, User
-from django.core.exceptions import ValidationError
+from django.contrib.auth.models import Group as BaseGroup
+from django.contrib.auth.models import Permission, User
 from django.db.models import Count
 from django.db.models.functions import Lower
-from django.db.models.signals import pre_save, post_save, pre_delete, \
-    post_delete, m2m_changed
+from django.db.models.signals import (
+    m2m_changed,
+    post_delete,
+    post_save,
+    pre_delete,
+    pre_save
+)
 from django.dispatch import receiver
-from django.utils.timezone import now
-from django.utils.translation import gettext_lazy as _
 
-from .models import AuthGroup, ReservedGroupName
-from .models import GroupRequest
+from .forms import GroupAdminForm, ReservedGroupNameAdminForm
+from .models import AuthGroup, GroupRequest, ReservedGroupName
 
 if 'eve_autogroups' in apps.app_configs:
     _has_auto_groups = True
@@ -28,10 +29,12 @@ class AuthGroupInlineAdmin(admin.StackedInline):
         'description',
         'group_leaders',
         'group_leader_groups',
-        'states', 'internal',
+        'states',
+        'internal',
         'hidden',
         'open',
-        'public'
+        'public',
+        'restricted',
     )
     verbose_name_plural = 'Auth Settings'
     verbose_name = ''
@@ -50,6 +53,11 @@ class AuthGroupInlineAdmin(admin.StackedInline):
     def has_change_permission(self, request, obj=None):
         return request.user.has_perm('auth.change_group')
 
+    def get_readonly_fields(self, request, obj=None):
+        if not request.user.is_superuser:
+            return self.readonly_fields + ("restricted",)
+        return self.readonly_fields
+
 
 if _has_auto_groups:
     class IsAutoGroupFilter(admin.SimpleListFilter):
@@ -96,17 +104,6 @@ class HasLeaderFilter(admin.SimpleListFilter):
         return queryset
 
 
-class GroupAdminForm(forms.ModelForm):
-    def clean_name(self):
-        my_name = self.cleaned_data['name']
-        if ReservedGroupName.objects.filter(name__iexact=my_name).exists():
-            raise ValidationError(
-                _("This name has been reserved and can not be used for groups."),
-                code='reserved_name'
-            )
-        return my_name
-
-
 class GroupAdmin(admin.ModelAdmin):
     form = GroupAdminForm
     list_select_related = ('authgroup',)
@@ -143,17 +140,14 @@ class GroupAdmin(admin.ModelAdmin):
     def _description(self, obj):
         return obj.authgroup.description
 
+    @admin.display(description="Members", ordering="member_count")
     def _member_count(self, obj):
         return obj.member_count
 
-    _member_count.short_description = 'Members'
-    _member_count.admin_order_field = 'member_count'
-
+    @admin.display(boolean=True)
     def has_leader(self, obj):
         return obj.authgroup.group_leaders.exists() or obj.authgroup.group_leader_groups.exists()
 
-    has_leader.boolean = True
-
     def _properties(self, obj):
         properties = list()
         if _has_auto_groups and (
@@ -172,11 +166,10 @@ class GroupAdmin(admin.ModelAdmin):
                 properties.append('Public')
         if not properties:
             properties.append('Default')
-
+        if obj.authgroup.restricted:
+            properties.append('Restricted')
         return properties
 
-    _properties.short_description = "properties"
-
     filter_horizontal = ('permissions',)
     inlines = (AuthGroupInlineAdmin,)
 
@@ -192,6 +185,11 @@ class GroupAdmin(admin.ModelAdmin):
             ag_instance.save()
         formset.save()
 
+    def get_readonly_fields(self, request, obj=None):
+        if not request.user.is_superuser:
+            return self.readonly_fields + ("permissions",)
+        return self.readonly_fields
+
 
 class Group(BaseGroup):
     class Meta:
@@ -216,33 +214,10 @@ class GroupRequestAdmin(admin.ModelAdmin):
         'leave_request',
     )
 
+    @admin.display(boolean=True, description="is leave request")
     def _leave_request(self, obj) -> True:
         return obj.leave_request
 
-    _leave_request.short_description = 'is leave request'
-    _leave_request.boolean = True
-
-
-class ReservedGroupNameAdminForm(forms.ModelForm):
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-        self.fields['created_by'].initial = self.current_user.username
-        self.fields['created_at'].initial = _("(auto)")
-
-    created_by = forms.CharField(disabled=True)
-    created_at = forms.CharField(disabled=True)
-
-    def clean_name(self):
-        my_name = self.cleaned_data['name'].lower()
-        if Group.objects.filter(name__iexact=my_name).exists():
-            raise ValidationError(
-                _("There already exists a group with that name."), code='already_exists'
-            )
-        return my_name
-
-    def clean_created_at(self):
-        return now()
-
 
 @admin.register(ReservedGroupName)
 class ReservedGroupNameAdmin(admin.ModelAdmin):

allianceauth/groupmanagement/forms.py

@@ -0,0 +1,39 @@
+from django import forms
+from django.contrib.auth.models import Group
+from django.core.exceptions import ValidationError
+from django.utils.timezone import now
+from django.utils.translation import gettext_lazy as _
+
+from .models import ReservedGroupName
+
+
+class GroupAdminForm(forms.ModelForm):
+    def clean_name(self):
+        my_name = self.cleaned_data['name']
+        if ReservedGroupName.objects.filter(name__iexact=my_name).exists():
+            raise ValidationError(
+                _("This name has been reserved and can not be used for groups."),
+                code='reserved_name'
+            )
+        return my_name
+
+
+class ReservedGroupNameAdminForm(forms.ModelForm):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.fields['created_by'].initial = self.current_user.username
+        self.fields['created_at'].initial = _("(auto)")
+
+    created_by = forms.CharField(disabled=True)
+    created_at = forms.CharField(disabled=True)
+
+    def clean_name(self):
+        my_name = self.cleaned_data['name'].lower()
+        if Group.objects.filter(name__iexact=my_name).exists():
+            raise ValidationError(
+                _("There already exists a group with that name."), code='already_exists'
+            )
+        return my_name
+
+    def clean_created_at(self):
+        return now()

allianceauth/groupmanagement/migrations/0019_adding_restricted_to_groups.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.2.10 on 2022-04-08 19:30
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('groupmanagement', '0018_reservedgroupname'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='authgroup',
+            name='restricted',
+            field=models.BooleanField(default=False, help_text='Group is restricted. This means that adding or removing users for this group requires a superuser admin.'),
+        ),
+    ]

allianceauth/groupmanagement/models.py

@@ -13,6 +13,7 @@ from allianceauth.notifications import notify
 
 class GroupRequest(models.Model):
     """Request from a user for joining or leaving a group."""
+
     leave_request = models.BooleanField(default=0)
     user = models.ForeignKey(User, on_delete=models.CASCADE)
     group = models.ForeignKey(Group, on_delete=models.CASCADE)
@@ -44,6 +45,7 @@ class GroupRequest(models.Model):
 
 class RequestLog(models.Model):
     """Log entry about who joined and left a group and who approved it."""
+
     request_type = models.BooleanField(null=True)
     group = models.ForeignKey(Group, on_delete=models.CASCADE)
     request_info = models.CharField(max_length=254)
@@ -95,6 +97,7 @@ class AuthGroup(models.Model):
         Open - Users are automatically accepted into the group
         Not Open - Users requests must be approved before they are added to the group
     """
+
     group = models.OneToOneField(Group, on_delete=models.CASCADE, primary_key=True)
     internal = models.BooleanField(
         default=True,
@@ -126,6 +129,13 @@ class AuthGroup(models.Model):
             "are no longer authenticated."
         )
     )
+    restricted = models.BooleanField(
+        default=False,
+        help_text=_(
+            "Group is restricted. This means that adding or removing users "
+            "for this group requires a superuser admin."
+        )
+    )
     group_leaders = models.ManyToManyField(
         User,
         related_name='leads_groups',
@@ -185,6 +195,7 @@ class ReservedGroupName(models.Model):
 
     This enables AA to ignore groups on other services (e.g. Discord) with that name.
     """
+
     name = models.CharField(
         _('name'),
         max_length=150,

allianceauth/groupmanagement/tests/test_admin.py

@@ -1,5 +1,7 @@
 from unittest.mock import patch
 
+from django_webtest import WebTest
+
 from django.conf import settings
 from django.contrib import admin
 from django.contrib.admin.sites import AdminSite
@@ -10,8 +12,10 @@ from allianceauth.authentication.models import CharacterOwnership, State
 from allianceauth.eveonline.models import (
     EveCharacter, EveCorporationInfo, EveAllianceInfo
 )
-from ..admin import HasLeaderFilter, GroupAdmin, Group
+from allianceauth.tests.auth_utils import AuthUtils
+
 from . import get_admin_change_view_url
+from ..admin import HasLeaderFilter, GroupAdmin, Group
 from ..models import ReservedGroupName
 
 
@@ -33,7 +37,6 @@ class MockRequest:
 
 
 class TestGroupAdmin(TestCase):
-
     @classmethod
     def setUpClass(cls):
         super().setUpClass()
@@ -468,6 +471,74 @@ class TestGroupAdmin(TestCase):
         self.assertFalse(Group.objects.filter(name="new group").exists())
 
 
+class TestGroupAdminChangeFormSuperuserExclusiveEdits(WebTest):
+    @classmethod
+    def setUpClass(cls) -> None:
+        super().setUpClass()
+        cls.super_admin = User.objects.create_superuser("super_admin")
+        cls.staff_admin = User.objects.create_user("staff_admin")
+        cls.staff_admin.is_staff = True
+        cls.staff_admin.save()
+        cls.staff_admin = AuthUtils.add_permissions_to_user_by_name(
+            [
+                "auth.add_group",
+                "auth.change_group",
+                "auth.view_group",
+                "groupmanagement.add_group",
+                "groupmanagement.change_group",
+                "groupmanagement.view_group",
+            ],
+            cls.staff_admin
+        )
+        cls.superuser_exclusive_fields = ["permissions", "authgroup-0-restricted"]
+
+    def test_should_show_all_fields_to_superuser_for_add(self):
+        # given
+        self.app.set_user(self.super_admin)
+        page = self.app.get("/admin/groupmanagement/group/add/")
+        # when
+        form = page.forms["group_form"]
+        # then
+        for field in self.superuser_exclusive_fields:
+            with self.subTest(field=field):
+                self.assertIn(field, form.fields)
+
+    def test_should_not_show_all_fields_to_staff_admins_for_add(self):
+        # given
+        self.app.set_user(self.staff_admin)
+        page = self.app.get("/admin/groupmanagement/group/add/")
+        # when
+        form = page.forms["group_form"]
+        # then
+        for field in self.superuser_exclusive_fields:
+            with self.subTest(field=field):
+                self.assertNotIn(field, form.fields)
+
+    def test_should_show_all_fields_to_superuser_for_change(self):
+        # given
+        self.app.set_user(self.super_admin)
+        group = Group.objects.create(name="Dummy group")
+        page = self.app.get(f"/admin/groupmanagement/group/{group.pk}/change/")
+        # when
+        form = page.forms["group_form"]
+        # then
+        for field in self.superuser_exclusive_fields:
+            with self.subTest(field=field):
+                self.assertIn(field, form.fields)
+
+    def test_should_not_show_all_fields_to_staff_admin_for_change(self):
+        # given
+        self.app.set_user(self.staff_admin)
+        group = Group.objects.create(name="Dummy group")
+        page = self.app.get(f"/admin/groupmanagement/group/{group.pk}/change/")
+        # when
+        form = page.forms["group_form"]
+        # then
+        for field in self.superuser_exclusive_fields:
+            with self.subTest(field=field):
+                self.assertNotIn(field, form.fields)
+
+
 class TestReservedGroupNameAdmin(TestCase):
     @classmethod
     def setUpClass(cls):