Send notifications about login with new client or country (#4032)

* Send notifications about login with new client or country

* Rebase migration

* Remove immediately

* Fix isort

* Text update

src/pretix/base/migrations/0261_userknownloginsource.py

@@ -0,0 +1,48 @@
+# Generated by Django 4.2.10 on 2024-04-02 15:37
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+import pretix.helpers.countries
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("pretixbase", "0260_alter_reusablemedium_index_together"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="UserKnownLoginSource",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True, primary_key=True, serialize=False
+                    ),
+                ),
+                ("agent_type", models.CharField(max_length=255, null=True)),
+                ("device_type", models.CharField(max_length=255, null=True)),
+                ("os_type", models.CharField(max_length=255, null=True)),
+                (
+                    "country",
+                    pretix.helpers.countries.FastCountryField(
+                        countries=pretix.helpers.countries.CachedCountries,
+                        max_length=2,
+                        null=True,
+                    ),
+                ),
+                ("last_seen", models.DateTimeField()),
+                (
+                    "user",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="known_login_sources",
+                        to=settings.AUTH_USER_MODEL,
+                    ),
+                ),
+            ],
+        ),
+    ]

src/pretix/base/models/auth.py

@@ -56,6 +56,7 @@ from webauthn.helpers.structs import PublicKeyCredentialDescriptor
 from pretix.base.i18n import language
 from pretix.helpers.urls import build_absolute_uri
 
+from ...helpers.countries import FastCountryField
 from ...helpers.u2f import pub_key_from_der, websafe_decode
 from .base import LoggingMixin
 
@@ -579,6 +580,15 @@ class User(AbstractBaseUser, PermissionsMixin, LoggingMixin):
         self.save(update_fields=['session_token'])
 
 
+class UserKnownLoginSource(models.Model):
+    user = models.ForeignKey('User', on_delete=models.CASCADE, related_name="known_login_sources")
+    agent_type = models.CharField(max_length=255, null=True, blank=True)
+    device_type = models.CharField(max_length=255, null=True, blank=True)
+    os_type = models.CharField(max_length=255, null=True, blank=True)
+    country = FastCountryField(null=True, blank=True)
+    last_seen = models.DateTimeField()
+
+
 class StaffSession(models.Model):
     user = models.ForeignKey('User', on_delete=models.PROTECT)
     date_start = models.DateTimeField(auto_now_add=True)

src/pretix/base/services/cleanup.py

@@ -31,6 +31,7 @@ from pretix.base.models import CachedCombinedTicket, CachedTicket
 from pretix.base.models.customers import CustomerSSOGrant
 
 from ..models import CachedFile, CartPosition, InvoiceAddress
+from ..models.auth import UserKnownLoginSource
 from ..signals import periodic_task
 
 
@@ -75,3 +76,9 @@ def clearsessions(sender, **kwargs):
 @scopes_disabled()
 def clear_oidc_data(sender, **kwargs):
     CustomerSSOGrant.objects.filter(expires__lt=now() - timedelta(days=14)).delete()
+
+
+@receiver(signal=periodic_task)
+@scopes_disabled()
+def clear_old_login_sources(sender, **kwargs):
+    UserKnownLoginSource.objects.filter(last_seen__lt=now() - timedelta(days=365)).delete()