4.44.3

app/CONTRIBUTING.md

@@ -68,6 +68,12 @@ For most tests, you will need to have ``redis`` installed and started on your ma
 sh scripts/run-test.sh
 ```
 
+You can also run tests using a local Postgres DB to speed things up. This can be done by
+
+- creating an empty test DB and running the database migration by `dropdb test && createdb test && DB_URI=postgresql://localhost:5432/test alembic upgrade head`
+
+- replacing the `DB_URI` in `test.env` file by `DB_URI=postgresql://localhost:5432/test`
+
 ## Run the code locally
 
 Install npm packages

app/app/admin_model.py

@@ -46,7 +46,8 @@ class SLModelView(sqla.ModelView):
 
     def inaccessible_callback(self, name, **kwargs):
         # redirect to login page if user doesn't have access
-        return redirect(url_for("auth.login", next=request.url))
+        flash("You don't have access to the admin page", "error")
+        return redirect(url_for("dashboard.index", next=request.url))
 
     def on_model_change(self, form, model, is_created):
         changes = {}

app/app/alias_utils.py

@@ -25,6 +25,8 @@ from app.email_utils import (
     render,
 )
 from app.errors import AliasInTrashError
+from app.events.event_dispatcher import EventDispatcher
+from app.events.generated.event_pb2 import AliasDeleted, AliasStatusChange, EventContent
 from app.log import LOG
 from app.models import (
     Alias,
@@ -308,31 +310,36 @@ def delete_alias(alias: Alias, user: User):
     Delete an alias and add it to either global or domain trash
     Should be used instead of Alias.delete, DomainDeletedAlias.create, DeletedAlias.create
     """
-    # save deleted alias to either global or domain trash
+    LOG.i(f"User {user} has deleted alias {alias}")
+    # save deleted alias to either global or domain tra
     if alias.custom_domain_id:
         if not DomainDeletedAlias.get_by(
             email=alias.email, domain_id=alias.custom_domain_id
         ):
-            LOG.d("add %s to domain %s trash", alias, alias.custom_domain_id)
+            domain_deleted_alias = DomainDeletedAlias(
-            Session.add(
+                user_id=user.id,
-                DomainDeletedAlias(
+                email=alias.email,
-                    user_id=user.id,
+                domain_id=alias.custom_domain_id,
-                    email=alias.email,
-                    domain_id=alias.custom_domain_id,
-                )
             )
+            Session.add(domain_deleted_alias)
             Session.commit()
-
+            LOG.i(
+                f"Moving {alias} to domain {alias.custom_domain_id} trash {domain_deleted_alias}"
+            )
     else:
         if not DeletedAlias.get_by(email=alias.email):
-            LOG.d("add %s to global trash", alias)
+            deleted_alias = DeletedAlias(email=alias.email)
-            Session.add(DeletedAlias(email=alias.email))
+            Session.add(deleted_alias)
             Session.commit()
+            LOG.i(f"Moving {alias} to global trash {deleted_alias}")
 
-    LOG.i("delete alias %s", alias)
     Alias.filter(Alias.id == alias.id).delete()
     Session.commit()
 
+    EventDispatcher.send_event(
+        user, EventContent(alias_deleted=AliasDeleted(alias_id=alias.id))
+    )
+
 
 def aliases_for_mailbox(mailbox: Mailbox) -> [Alias]:
     """
@@ -458,3 +465,15 @@ def transfer_alias(alias, new_user, new_mailboxes: [Mailbox]):
     alias.pinned = False
 
     Session.commit()
+
+
+def change_alias_status(alias: Alias, enabled: bool, commit: bool = False):
+    alias.enabled = enabled
+
+    event = AliasStatusChange(
+        alias_id=alias.id, alias_email=alias.email, enabled=enabled
+    )
+    EventDispatcher.send_event(alias.user, EventContent(alias_status_change=event))
+
+    if commit:
+        Session.commit()

app/app/api/views/alias.py

@@ -184,7 +184,7 @@ def toggle_alias(alias_id):
     if not alias or alias.user_id != user.id:
         return jsonify(error="Forbidden"), 403
 
-    alias.enabled = not alias.enabled
+    alias_utils.change_alias_status(alias, enabled=not alias.enabled)
     Session.commit()
 
     return jsonify(enabled=alias.enabled), 200

app/app/auth/views/change_email.py

@@ -3,11 +3,13 @@ from flask_login import login_user
 
 from app.auth.base import auth_bp
 from app.db import Session
+from app.extensions import limiter
 from app.log import LOG
 from app.models import EmailChange, ResetPasswordCode
 
 
 @auth_bp.route("/change_email", methods=["GET", "POST"])
+@limiter.limit("3/hour")
 def change_email():
     code = request.args.get("code")
 

app/app/auth/views/oidc.py

@@ -1,14 +1,13 @@
 from flask import request, session, redirect, flash, url_for
 from requests_oauthlib import OAuth2Session
 
+import requests
+
 from app import config
 from app.auth.base import auth_bp
 from app.auth.views.login_utils import after_login
 from app.config import (
     URL,
-    OIDC_AUTHORIZATION_URL,
-    OIDC_USER_INFO_URL,
-    OIDC_TOKEN_URL,
     OIDC_SCOPES,
     OIDC_NAME_FIELD,
 )
@@ -16,14 +15,15 @@ from app.db import Session
 from app.email_utils import send_welcome_email
 from app.log import LOG
 from app.models import User, SocialAuth
-from app.utils import encode_url, sanitize_email, sanitize_next_url
+from app.utils import sanitize_email, sanitize_next_url
 
 
 # need to set explicitly redirect_uri instead of leaving the lib to pre-fill redirect_uri
 # when served behind nginx, the redirect_uri is localhost... and not the real url
-_redirect_uri = URL + "/auth/oidc/callback"
+redirect_uri = URL + "/auth/oidc/callback"
 
 SESSION_STATE_KEY = "oauth_state"
+SESSION_NEXT_KEY = "oauth_redirect_next"
 
 
 @auth_bp.route("/oidc/login")
@@ -32,18 +32,17 @@ def oidc_login():
         return redirect(url_for("auth.login"))
 
     next_url = sanitize_next_url(request.args.get("next"))
-    if next_url:
+
-        redirect_uri = _redirect_uri + "?next=" + encode_url(next_url)
+    auth_url = requests.get(config.OIDC_WELL_KNOWN_URL).json()["authorization_endpoint"]
-    else:
-        redirect_uri = _redirect_uri
 
     oidc = OAuth2Session(
         config.OIDC_CLIENT_ID, scope=[OIDC_SCOPES], redirect_uri=redirect_uri
     )
-    authorization_url, state = oidc.authorization_url(OIDC_AUTHORIZATION_URL)
+    authorization_url, state = oidc.authorization_url(auth_url)
 
     # State is used to prevent CSRF, keep this for later.
     session[SESSION_STATE_KEY] = state
+    session[SESSION_NEXT_KEY] = next_url
     return redirect(authorization_url)
 
 
@@ -60,19 +59,23 @@ def oidc_callback():
         flash("Please use another sign in method then", "warning")
         return redirect("/")
 
+    oidc_configuration = requests.get(config.OIDC_WELL_KNOWN_URL).json()
+    user_info_url = oidc_configuration["userinfo_endpoint"]
+    token_url = oidc_configuration["token_endpoint"]
+
     oidc = OAuth2Session(
         config.OIDC_CLIENT_ID,
         state=session[SESSION_STATE_KEY],
         scope=[OIDC_SCOPES],
-        redirect_uri=_redirect_uri,
+        redirect_uri=redirect_uri,
     )
     oidc.fetch_token(
-        OIDC_TOKEN_URL,
+        token_url,
         client_secret=config.OIDC_CLIENT_SECRET,
         authorization_response=request.url,
     )
 
-    oidc_user_data = oidc.get(OIDC_USER_INFO_URL)
+    oidc_user_data = oidc.get(user_info_url)
     if oidc_user_data.status_code != 200:
         LOG.e(
             f"cannot get oidc user data {oidc_user_data.status_code} {oidc_user_data.text}"
@@ -111,7 +114,8 @@ def oidc_callback():
         Session.commit()
 
     # The activation link contains the original page, for ex authorize page
-    next_url = sanitize_next_url(request.args.get("next")) if request.args else None
+    next_url = session[SESSION_NEXT_KEY]
+    session[SESSION_NEXT_KEY] = None
 
     return after_login(user, next_url)
 

app/app/config.py

@@ -245,9 +245,7 @@ FACEBOOK_CLIENT_ID = os.environ.get("FACEBOOK_CLIENT_ID")
 FACEBOOK_CLIENT_SECRET = os.environ.get("FACEBOOK_CLIENT_SECRET")
 
 CONNECT_WITH_OIDC_ICON = os.environ.get("CONNECT_WITH_OIDC_ICON")
-OIDC_AUTHORIZATION_URL = os.environ.get("OIDC_AUTHORIZATION_URL")
+OIDC_WELL_KNOWN_URL = os.environ.get("OIDC_WELL_KNOWN_URL")
-OIDC_USER_INFO_URL = os.environ.get("OIDC_USER_INFO_URL")
-OIDC_TOKEN_URL = os.environ.get("OIDC_TOKEN_URL")
 OIDC_CLIENT_ID = os.environ.get("OIDC_CLIENT_ID")
 OIDC_CLIENT_SECRET = os.environ.get("OIDC_CLIENT_SECRET")
 OIDC_SCOPES = os.environ.get("OIDC_SCOPES")
@@ -431,7 +429,7 @@ except Exception:
     HIBP_SCAN_INTERVAL_DAYS = 7
 HIBP_API_KEYS = sl_getenv("HIBP_API_KEYS", list) or []
 HIBP_MAX_ALIAS_CHECK = 10_000
-HIBP_RPM = 100
+HIBP_RPM = int(os.environ.get("HIBP_API_RPM", 100))
 HIBP_SKIP_PARTNER_ALIAS = os.environ.get("HIBP_SKIP_PARTNER_ALIAS")
 
 KEEP_OLD_DATA_DAYS = 30
@@ -583,3 +581,9 @@ UPCLOUD_PASSWORD = os.environ.get("UPCLOUD_PASSWORD", None)
 UPCLOUD_DB_ID = os.environ.get("UPCLOUD_DB_ID", None)
 
 STORE_TRANSACTIONAL_EMAILS = "STORE_TRANSACTIONAL_EMAILS" in os.environ
+
+EVENT_WEBHOOK = os.environ.get("EVENT_WEBHOOK", None)
+
+# We want it disabled by default, so only skip if defined
+EVENT_WEBHOOK_SKIP_VERIFY_SSL = "EVENT_WEBHOOK_SKIP_VERIFY_SSL" in os.environ
+EVENT_WEBHOOK_DISABLE = "EVENT_WEBHOOK_DISABLE" in os.environ

app/app/dashboard/views/enter_sudo.py

@@ -14,7 +14,7 @@ from app.models import PartnerUser, SocialAuth
 from app.proton.utils import get_proton_partner
 from app.utils import sanitize_next_url
 
-_SUDO_GAP = 900
+_SUDO_GAP = 120
 
 
 class LoginForm(FlaskForm):

app/app/dashboard/views/index.py

@@ -141,12 +141,12 @@ def index():
                 )
 
             if request.form.get("form-name") == "delete-alias":
-                LOG.d("delete alias %s", alias)
+                LOG.i(f"User {current_user} requested deletion of alias {alias}")
                 email = alias.email
                 alias_utils.delete_alias(alias, current_user)
                 flash(f"Alias {email} has been deleted", "success")
             elif request.form.get("form-name") == "disable-alias":
-                alias.enabled = False
+                alias_utils.change_alias_status(alias, enabled=False)
                 Session.commit()
                 flash(f"Alias {alias.email} has been disabled", "success")
 

app/app/dashboard/views/mailbox_detail.py

@@ -11,9 +11,11 @@ from wtforms.fields.html5 import EmailField
 from app.config import ENFORCE_SPF, MAILBOX_SECRET
 from app.config import URL
 from app.dashboard.base import dashboard_bp
+from app.dashboard.views.enter_sudo import sudo_required
 from app.db import Session
 from app.email_utils import email_can_be_used_as_mailbox
 from app.email_utils import mailbox_already_used, render, send_email
+from app.extensions import limiter
 from app.log import LOG
 from app.models import Alias, AuthorizedAddress
 from app.models import Mailbox
@@ -29,6 +31,8 @@ class ChangeEmailForm(FlaskForm):
 
 @dashboard_bp.route("/mailbox/<int:mailbox_id>/", methods=["GET", "POST"])
 @login_required
+@sudo_required
+@limiter.limit("20/minute", methods=["POST"])
 def mailbox_detail_route(mailbox_id):
     mailbox: Mailbox = Mailbox.get(mailbox_id)
     if not mailbox or mailbox.user_id != current_user.id:
@@ -179,8 +183,15 @@ def mailbox_detail_route(mailbox_id):
 
         elif request.form.get("form-name") == "toggle-pgp":
             if request.form.get("pgp-enabled") == "on":
-                mailbox.disable_pgp = False
+                if mailbox.is_proton():
-                flash(f"PGP is enabled on {mailbox.email}", "success")
+                    mailbox.disable_pgp = True
+                    flash(
+                        "Enabling PGP for a Proton Mail mailbox is redundant and does not add any security benefit",
+                        "info",
+                    )
+                else:
+                    mailbox.disable_pgp = False
+                    flash(f"PGP is enabled on {mailbox.email}", "info")
             else:
                 mailbox.disable_pgp = True
                 flash(f"PGP is disabled on {mailbox.email}", "info")

app/app/dashboard/views/setting.py

@@ -227,6 +227,21 @@ def setting():
             Session.commit()
             flash("Your preference has been updated", "success")
             return redirect(url_for("dashboard.setting"))
+        elif request.form.get("form-name") == "enable_data_breach_check":
+            if not current_user.is_premium():
+                flash("Only premium plan can enable data breach monitoring", "warning")
+                return redirect(url_for("dashboard.setting"))
+            choose = request.form.get("enable_data_breach_check")
+            if choose == "on":
+                LOG.i("User {current_user} has enabled data breach monitoring")
+                current_user.enable_data_breach_check = True
+                flash("Data breach monitoring is enabled", "success")
+            else:
+                LOG.i("User {current_user} has disabled data breach monitoring")
+                current_user.enable_data_breach_check = False
+                flash("Data breach monitoring is disabled", "info")
+            Session.commit()
+            return redirect(url_for("dashboard.setting"))
         elif request.form.get("form-name") == "sender-in-ra":
             choose = request.form.get("enable")
             if choose == "on":

app/app/dashboard/views/unsubscribe.py

@@ -8,6 +8,7 @@ from app.db import Session
 from flask import redirect, url_for, flash, request, render_template
 from flask_login import login_required, current_user
 
+from app import alias_utils
 from app.dashboard.base import dashboard_bp
 from app.handler.unsubscribe_encoder import UnsubscribeAction
 from app.handler.unsubscribe_handler import UnsubscribeHandler
@@ -31,7 +32,7 @@ def unsubscribe(alias_id):
 
     # automatic unsubscribe, according to https://tools.ietf.org/html/rfc8058
     if request.method == "POST":
-        alias.enabled = False
+        alias_utils.change_alias_status(alias, False)
         flash(f"Alias {alias.email} has been blocked", "success")
         Session.commit()
 

app/app/events/event_dispatcher.py

@@ -0,0 +1,66 @@
+from abc import ABC, abstractmethod
+from app import config
+from app.db import Session
+from app.errors import ProtonPartnerNotSetUp
+from app.events.generated import event_pb2
+from app.models import User, PartnerUser, SyncEvent
+from app.proton.utils import get_proton_partner
+from typing import Optional
+
+NOTIFICATION_CHANNEL = "simplelogin_sync_events"
+
+
+class Dispatcher(ABC):
+    @abstractmethod
+    def send(self, event: bytes):
+        pass
+
+
+class PostgresDispatcher(Dispatcher):
+    def send(self, event: bytes):
+        instance = SyncEvent.create(content=event, flush=True)
+        Session.execute(f"NOTIFY {NOTIFICATION_CHANNEL}, '{instance.id}';")
+
+    @staticmethod
+    def get():
+        return PostgresDispatcher()
+
+
+class EventDispatcher:
+    @staticmethod
+    def send_event(
+        user: User,
+        content: event_pb2.EventContent,
+        dispatcher: Dispatcher = PostgresDispatcher.get(),
+        skip_if_webhook_missing: bool = True,
+    ):
+        if config.EVENT_WEBHOOK_DISABLE:
+            return
+
+        if not config.EVENT_WEBHOOK and skip_if_webhook_missing:
+            return
+
+        partner_user = EventDispatcher.__partner_user(user.id)
+        if not partner_user:
+            return
+
+        event = event_pb2.Event(
+            user_id=user.id,
+            external_user_id=partner_user.external_user_id,
+            partner_id=partner_user.partner_id,
+            content=content,
+        )
+
+        serialized = event.SerializeToString()
+        dispatcher.send(serialized)
+
+    @staticmethod
+    def __partner_user(user_id: int) -> Optional[PartnerUser]:
+        # Check if the current user has a partner_id
+        try:
+            proton_partner_id = get_proton_partner().id
+        except ProtonPartnerNotSetUp:
+            return None
+
+        # It has. Retrieve the information for the PartnerUser
+        return PartnerUser.get_by(user_id=user_id, partner_id=proton_partner_id)

app/app/events/generated/event_pb2.py

@@ -0,0 +1,38 @@
+# -*- coding: utf-8 -*-
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: event.proto
+# Protobuf Python Version: 5.26.1
+"""Generated protocol buffer code."""
+from google.protobuf import descriptor as _descriptor
+from google.protobuf import descriptor_pool as _descriptor_pool
+from google.protobuf import symbol_database as _symbol_database
+from google.protobuf.internal import builder as _builder
+# @@protoc_insertion_point(imports)
+
+_sym_db = _symbol_database.Default()
+
+
+
+
+DESCRIPTOR = _descriptor_pool.Default().AddSerializedFile(b'\n\x0b\x65vent.proto\x12\x12simplelogin_events\"\'\n\x0eUserPlanChange\x12\x15\n\rplan_end_time\x18\x01 \x01(\r\"\r\n\x0bUserDeleted\"Z\n\x0c\x41liasCreated\x12\x10\n\x08\x61lias_id\x18\x01 \x01(\r\x12\x13\n\x0b\x61lias_email\x18\x02 \x01(\t\x12\x12\n\nalias_note\x18\x03 \x01(\t\x12\x0f\n\x07\x65nabled\x18\x04 \x01(\x08\"K\n\x11\x41liasStatusChange\x12\x10\n\x08\x61lias_id\x18\x01 \x01(\r\x12\x13\n\x0b\x61lias_email\x18\x02 \x01(\t\x12\x0f\n\x07\x65nabled\x18\x03 \x01(\x08\"5\n\x0c\x41liasDeleted\x12\x10\n\x08\x61lias_id\x18\x01 \x01(\r\x12\x13\n\x0b\x61lias_email\x18\x02 \x01(\t\"\xce\x02\n\x0c\x45ventContent\x12>\n\x10user_plan_change\x18\x01 \x01(\x0b\x32\".simplelogin_events.UserPlanChangeH\x00\x12\x37\n\x0cuser_deleted\x18\x02 \x01(\x0b\x32\x1f.simplelogin_events.UserDeletedH\x00\x12\x39\n\ralias_created\x18\x03 \x01(\x0b\x32 .simplelogin_events.AliasCreatedH\x00\x12\x44\n\x13\x61lias_status_change\x18\x04 \x01(\x0b\x32%.simplelogin_events.AliasStatusChangeH\x00\x12\x39\n\ralias_deleted\x18\x05 \x01(\x0b\x32 .simplelogin_events.AliasDeletedH\x00\x42\t\n\x07\x63ontent\"y\n\x05\x45vent\x12\x0f\n\x07user_id\x18\x01 \x01(\r\x12\x18\n\x10\x65xternal_user_id\x18\x02 \x01(\t\x12\x12\n\npartner_id\x18\x03 \x01(\r\x12\x31\n\x07\x63ontent\x18\x04 \x01(\x0b\x32 .simplelogin_events.EventContentb\x06proto3')
+
+_globals = globals()
+_builder.BuildMessageAndEnumDescriptors(DESCRIPTOR, _globals)
+_builder.BuildTopDescriptorsAndMessages(DESCRIPTOR, 'event_pb2', _globals)
+if not _descriptor._USE_C_DESCRIPTORS:
+  DESCRIPTOR._loaded_options = None
+  _globals['_USERPLANCHANGE']._serialized_start=35
+  _globals['_USERPLANCHANGE']._serialized_end=74
+  _globals['_USERDELETED']._serialized_start=76
+  _globals['_USERDELETED']._serialized_end=89
+  _globals['_ALIASCREATED']._serialized_start=91
+  _globals['_ALIASCREATED']._serialized_end=181
+  _globals['_ALIASSTATUSCHANGE']._serialized_start=183
+  _globals['_ALIASSTATUSCHANGE']._serialized_end=258
+  _globals['_ALIASDELETED']._serialized_start=260
+  _globals['_ALIASDELETED']._serialized_end=313
+  _globals['_EVENTCONTENT']._serialized_start=316
+  _globals['_EVENTCONTENT']._serialized_end=650
+  _globals['_EVENT']._serialized_start=652
+  _globals['_EVENT']._serialized_end=773
+# @@protoc_insertion_point(module_scope)

app/app/events/generated/event_pb2.pyi

@@ -0,0 +1,71 @@
+from google.protobuf import descriptor as _descriptor
+from google.protobuf import message as _message
+from typing import ClassVar as _ClassVar, Mapping as _Mapping, Optional as _Optional, Union as _Union
+
+DESCRIPTOR: _descriptor.FileDescriptor
+
+class UserPlanChange(_message.Message):
+    __slots__ = ("plan_end_time",)
+    PLAN_END_TIME_FIELD_NUMBER: _ClassVar[int]
+    plan_end_time: int
+    def __init__(self, plan_end_time: _Optional[int] = ...) -> None: ...
+
+class UserDeleted(_message.Message):
+    __slots__ = ()
+    def __init__(self) -> None: ...
+
+class AliasCreated(_message.Message):
+    __slots__ = ("alias_id", "alias_email", "alias_note", "enabled")
+    ALIAS_ID_FIELD_NUMBER: _ClassVar[int]
+    ALIAS_EMAIL_FIELD_NUMBER: _ClassVar[int]
+    ALIAS_NOTE_FIELD_NUMBER: _ClassVar[int]
+    ENABLED_FIELD_NUMBER: _ClassVar[int]
+    alias_id: int
+    alias_email: str
+    alias_note: str
+    enabled: bool
+    def __init__(self, alias_id: _Optional[int] = ..., alias_email: _Optional[str] = ..., alias_note: _Optional[str] = ..., enabled: bool = ...) -> None: ...
+
+class AliasStatusChange(_message.Message):
+    __slots__ = ("alias_id", "alias_email", "enabled")
+    ALIAS_ID_FIELD_NUMBER: _ClassVar[int]
+    ALIAS_EMAIL_FIELD_NUMBER: _ClassVar[int]
+    ENABLED_FIELD_NUMBER: _ClassVar[int]
+    alias_id: int
+    alias_email: str
+    enabled: bool
+    def __init__(self, alias_id: _Optional[int] = ..., alias_email: _Optional[str] = ..., enabled: bool = ...) -> None: ...
+
+class AliasDeleted(_message.Message):
+    __slots__ = ("alias_id", "alias_email")
+    ALIAS_ID_FIELD_NUMBER: _ClassVar[int]
+    ALIAS_EMAIL_FIELD_NUMBER: _ClassVar[int]
+    alias_id: int
+    alias_email: str
+    def __init__(self, alias_id: _Optional[int] = ..., alias_email: _Optional[str] = ...) -> None: ...
+
+class EventContent(_message.Message):
+    __slots__ = ("user_plan_change", "user_deleted", "alias_created", "alias_status_change", "alias_deleted")
+    USER_PLAN_CHANGE_FIELD_NUMBER: _ClassVar[int]
+    USER_DELETED_FIELD_NUMBER: _ClassVar[int]
+    ALIAS_CREATED_FIELD_NUMBER: _ClassVar[int]
+    ALIAS_STATUS_CHANGE_FIELD_NUMBER: _ClassVar[int]
+    ALIAS_DELETED_FIELD_NUMBER: _ClassVar[int]
+    user_plan_change: UserPlanChange
+    user_deleted: UserDeleted
+    alias_created: AliasCreated
+    alias_status_change: AliasStatusChange
+    alias_deleted: AliasDeleted
+    def __init__(self, user_plan_change: _Optional[_Union[UserPlanChange, _Mapping]] = ..., user_deleted: _Optional[_Union[UserDeleted, _Mapping]] = ..., alias_created: _Optional[_Union[AliasCreated, _Mapping]] = ..., alias_status_change: _Optional[_Union[AliasStatusChange, _Mapping]] = ..., alias_deleted: _Optional[_Union[AliasDeleted, _Mapping]] = ...) -> None: ...
+
+class Event(_message.Message):
+    __slots__ = ("user_id", "external_user_id", "partner_id", "content")
+    USER_ID_FIELD_NUMBER: _ClassVar[int]
+    EXTERNAL_USER_ID_FIELD_NUMBER: _ClassVar[int]
+    PARTNER_ID_FIELD_NUMBER: _ClassVar[int]
+    CONTENT_FIELD_NUMBER: _ClassVar[int]
+    user_id: int
+    external_user_id: str
+    partner_id: int
+    content: EventContent
+    def __init__(self, user_id: _Optional[int] = ..., external_user_id: _Optional[str] = ..., partner_id: _Optional[int] = ..., content: _Optional[_Union[EventContent, _Mapping]] = ...) -> None: ...

app/app/handler/unsubscribe_handler.py

@@ -5,6 +5,7 @@ from typing import Optional
 from aiosmtpd.smtp import Envelope
 
 from app import config
+from app import alias_utils
 from app.db import Session
 from app.email import headers, status
 from app.email_utils import (
@@ -101,7 +102,7 @@ class UnsubscribeHandler:
             mailbox.email, alias
         ):
             return status.E509
-        alias.enabled = False
+        alias_utils.change_alias_status(alias, enabled=False)
         Session.commit()
         enable_alias_url = config.URL + f"/dashboard/?highlight_alias_id={alias.id}"
         for mailbox in alias.mailboxes:

app/app/models.py

@@ -525,6 +525,11 @@ class User(Base, ModelMixin, UserMixin, PasswordOracle):
         sa.Boolean, default=True, nullable=False, server_default="1"
     )
 
+    # user opted in for data breach check
+    enable_data_breach_check = sa.Column(
+        sa.Boolean, default=False, nullable=False, server_default="0"
+    )
+
     # bitwise flags. Allow for future expansion
     flags = sa.Column(
         sa.BigInteger,
@@ -652,6 +657,21 @@ class User(Base, ModelMixin, UserMixin, PasswordOracle):
 
         return user
 
+    @classmethod
+    def delete(cls, obj_id, commit=False):
+        # Internal import to avoid global import cycles
+        from app.events.event_dispatcher import EventDispatcher
+        from app.events.generated.event_pb2 import UserDeleted, EventContent
+
+        user: User = cls.get(obj_id)
+        EventDispatcher.send_event(user, EventContent(user_deleted=UserDeleted()))
+
+        res = super(User, cls).delete(obj_id)
+        if commit:
+            Session.commit()
+
+        return res
+
     def get_active_subscription(
         self, include_partner_subscription: bool = True
     ) -> Optional[
@@ -1614,6 +1634,18 @@ class Alias(Base, ModelMixin):
         Session.add(new_alias)
         DailyMetric.get_or_create_today_metric().nb_alias += 1
 
+        # Internal import to avoid global import cycles
+        from app.events.event_dispatcher import EventDispatcher
+        from app.events.generated.event_pb2 import AliasCreated, EventContent
+
+        event = AliasCreated(
+            alias_id=new_alias.id,
+            alias_email=new_alias.email,
+            alias_note=new_alias.note,
+            enabled=True,
+        )
+        EventDispatcher.send_event(user, EventContent(alias_created=event))
+
         if commit:
             Session.commit()
 
@@ -2644,10 +2676,15 @@ class Mailbox(Base, ModelMixin):
         return False
 
     def nb_alias(self):
-        return (
+        alias_ids = set(
-            AliasMailbox.filter_by(mailbox_id=self.id).count()
+            am.alias_id
-            + Alias.filter_by(mailbox_id=self.id).count()
+            for am in AliasMailbox.filter_by(mailbox_id=self.id).values(
+                AliasMailbox.alias_id
+            )
         )
+        for alias in Alias.filter_by(mailbox_id=self.id).values(Alias.id):
+            alias_ids.add(alias.id)
+        return len(alias_ids)
 
     def is_proton(self) -> bool:
         if (
@@ -2696,12 +2733,15 @@ class Mailbox(Base, ModelMixin):
 
     @property
     def aliases(self) -> [Alias]:
-        ret = Alias.filter_by(mailbox_id=self.id).all()
+        ret = dict(
+            (alias.id, alias) for alias in Alias.filter_by(mailbox_id=self.id).all()
+        )
 
         for am in AliasMailbox.filter_by(mailbox_id=self.id):
-            ret.append(am.alias)
+            if am.alias_id not in ret:
+                ret[am.alias_id] = am.alias
 
-        return ret
+        return list(ret.values())
 
     @classmethod
     def create(cls, **kw):
@@ -3635,3 +3675,52 @@ class ApiToCookieToken(Base, ModelMixin):
         code = secrets.token_urlsafe(32)
 
         return super().create(code=code, **kwargs)
+
+
+class SyncEvent(Base, ModelMixin):
+    """This model holds the events that need to be sent to the webhook"""
+
+    __tablename__ = "sync_event"
+    content = sa.Column(sa.LargeBinary, unique=False, nullable=False)
+    taken_time = sa.Column(
+        ArrowType, default=None, nullable=True, server_default=None, index=True
+    )
+
+    __table_args__ = (
+        sa.Index("ix_sync_event_created_at", "created_at"),
+        sa.Index("ix_sync_event_taken_time", "taken_time"),
+    )
+
+    def mark_as_taken(self) -> bool:
+        sql = """
+        UPDATE sync_event
+        SET taken_time = :taken_time
+        WHERE id = :sync_event_id
+          AND taken_time IS NULL
+        """
+        args = {"taken_time": arrow.now().datetime, "sync_event_id": self.id}
+
+        res = Session.execute(sql, args)
+        Session.commit()
+
+        return res.rowcount > 0
+
+    @classmethod
+    def get_dead_letter(cls, older_than: Arrow) -> [SyncEvent]:
+        return (
+            SyncEvent.filter(
+                (
+                    (
+                        SyncEvent.taken_time.isnot(None)
+                        & (SyncEvent.taken_time < older_than)
+                    )
+                    | (
+                        SyncEvent.taken_time.is_(None)
+                        & (SyncEvent.created_at < older_than)
+                    )
+                )
+            )
+            .order_by(SyncEvent.id)
+            .limit(100)
+            .all()
+        )

app/app/rate_limiter.py

@@ -30,7 +30,9 @@ def check_bucket_limit(
     try:
         value = lock_redis.incr(bucket_lock_name, bucket_seconds)
         if value > max_hits:
-            LOG.i(f"Rate limit hit for {bucket_lock_name} -> {value}/{max_hits}")
+            LOG.i(
+                f"Rate limit hit for {lock_name} (bucket id {bucket_id}) -> {value}/{max_hits}"
+            )
             newrelic.agent.record_custom_event(
                 "BucketRateLimit",
                 {"lock_name": lock_name, "bucket_seconds": bucket_seconds},

app/app/subscription_webhook.py

@@ -2,6 +2,8 @@ import requests
 from requests import RequestException
 
 from app import config
+from app.events.event_dispatcher import EventDispatcher
+from app.events.generated.event_pb2 import EventContent, UserPlanChange
 from app.log import LOG
 from app.models import User
 
@@ -31,3 +33,6 @@ def execute_subscription_webhook(user: User):
             )
     except RequestException as e:
         LOG.error(f"Subscription request exception: {e}")
+
+    event = UserPlanChange(plan_end_time=sl_subscription_end)
+    EventDispatcher.send_event(user, EventContent(user_plan_change=event))

app/cron.py

@@ -1070,6 +1070,7 @@ def get_alias_to_check_hibp(
             Alias.id >= min_alias_id,
             Alias.id < max_alias_id,
             User.disabled == False,  # noqa: E712
+            User.enable_data_breach_check,
             or_(
                 User.lifetime,
                 ManualSubscription.end_at > now,

app/email_handler.py

@@ -53,7 +53,7 @@ from flanker.addresslib.address import EmailAddress
 from sqlalchemy.exc import IntegrityError
 
 from app import pgp_utils, s3, config
-from app.alias_utils import try_auto_create
+from app.alias_utils import try_auto_create, change_alias_status
 from app.config import (
     EMAIL_DOMAIN,
     URL,
@@ -1180,6 +1180,7 @@ def handle_reply(envelope, msg: Message, rcpt_to: str) -> (bool, str):
             # References and In-Reply-To are used for keeping the email thread
             headers.REFERENCES,
             headers.IN_REPLY_TO,
+            headers.SL_QUEUE_ID,
         ]
         + headers.MIME_HEADERS,
     )
@@ -1584,7 +1585,7 @@ def handle_bounce_forward_phase(msg: Message, email_log: EmailLog):
         LOG.w(
             f"Disable alias {alias} because {reason}. {alias.mailboxes} {alias.user}. Last contact {contact}"
         )
-        alias.enabled = False
+        change_alias_status(alias, enabled=False)
 
         Notification.create(
             user_id=user.id,

app/event_listener.py

@@ -0,0 +1,64 @@
+import argparse
+from enum import Enum
+from sys import argv, exit
+
+from app.config import DB_URI
+from app.log import LOG
+from events.runner import Runner
+from events.event_source import DeadLetterEventSource, PostgresEventSource
+from events.event_sink import ConsoleEventSink, HttpEventSink
+
+
+class Mode(Enum):
+    DEAD_LETTER = "dead_letter"
+    LISTENER = "listener"
+
+    @staticmethod
+    def from_str(value: str):
+        if value == Mode.DEAD_LETTER.value:
+            return Mode.DEAD_LETTER
+        elif value == Mode.LISTENER.value:
+            return Mode.LISTENER
+        else:
+            raise ValueError(f"Invalid mode: {value}")
+
+
+def main(mode: Mode, dry_run: bool):
+    if mode == Mode.DEAD_LETTER:
+        LOG.i("Using DeadLetterEventSource")
+        source = DeadLetterEventSource()
+    elif mode == Mode.LISTENER:
+        LOG.i("Using PostgresEventSource")
+        source = PostgresEventSource(DB_URI)
+    else:
+        raise ValueError(f"Invalid mode: {mode}")
+
+    if dry_run:
+        LOG.i("Starting with ConsoleEventSink")
+        sink = ConsoleEventSink()
+    else:
+        LOG.i("Starting with HttpEventSink")
+        sink = HttpEventSink()
+
+    runner = Runner(source=source, sink=sink)
+    runner.run()
+
+
+def args():
+    parser = argparse.ArgumentParser(description="Run event listener")
+    parser.add_argument(
+        "mode",
+        help="Mode to run",
+        choices=[Mode.DEAD_LETTER.value, Mode.LISTENER.value],
+    )
+    parser.add_argument("--dry-run", help="Dry run mode", action="store_true")
+    return parser.parse_args()
+
+
+if __name__ == "__main__":
+    if len(argv) < 2:
+        print("Invalid usage. Pass 'listener' or 'dead_letter' as argument")
+        exit(1)
+
+    args = args()
+    main(Mode.from_str(args.mode), args.dry_run)

app/events/event_sink.py

@@ -0,0 +1,42 @@
+import requests
+
+from abc import ABC, abstractmethod
+from app.config import EVENT_WEBHOOK, EVENT_WEBHOOK_SKIP_VERIFY_SSL
+from app.log import LOG
+from app.models import SyncEvent
+
+
+class EventSink(ABC):
+    @abstractmethod
+    def process(self, event: SyncEvent) -> bool:
+        pass
+
+
+class HttpEventSink(EventSink):
+    def process(self, event: SyncEvent) -> bool:
+        if not EVENT_WEBHOOK:
+            LOG.warning("Skipping sending event because there is no webhook configured")
+            return False
+
+        LOG.info(f"Sending event {event.id} to {EVENT_WEBHOOK}")
+
+        res = requests.post(
+            url=EVENT_WEBHOOK,
+            data=event.content,
+            headers={"Content-Type": "application/x-protobuf"},
+            verify=not EVENT_WEBHOOK_SKIP_VERIFY_SSL,
+        )
+        if res.status_code != 200:
+            LOG.warning(
+                f"Failed to send event to webhook: {res.status_code} {res.text}"
+            )
+            return False
+        else:
+            LOG.info(f"Event {event.id} sent successfully to webhook")
+            return True
+
+
+class ConsoleEventSink(EventSink):
+    def process(self, event: SyncEvent) -> bool:
+        LOG.info(f"Handling event {event.id}")
+        return True

app/events/event_source.py

@@ -0,0 +1,100 @@
+import arrow
+import newrelic.agent
+import psycopg2
+import select
+
+from abc import ABC, abstractmethod
+from app.log import LOG
+from app.models import SyncEvent
+from app.events.event_dispatcher import NOTIFICATION_CHANNEL
+from time import sleep
+from typing import Callable, NoReturn
+
+_DEAD_LETTER_THRESHOLD_MINUTES = 10
+_DEAD_LETTER_INTERVAL_SECONDS = 30
+
+_POSTGRES_RECONNECT_INTERVAL_SECONDS = 5
+
+
+class EventSource(ABC):
+    @abstractmethod
+    def run(self, on_event: Callable[[SyncEvent], NoReturn]):
+        pass
+
+
+class PostgresEventSource(EventSource):
+    def __init__(self, connection_string: str):
+        self.__connection_string = connection_string
+        self.__connect()
+
+    def run(self, on_event: Callable[[SyncEvent], NoReturn]):
+        while True:
+            try:
+                self.__listen(on_event)
+            except Exception as e:
+                LOG.warn(f"Error listening to events: {e}")
+                sleep(_POSTGRES_RECONNECT_INTERVAL_SECONDS)
+                self.__connect()
+
+    def __listen(self, on_event: Callable[[SyncEvent], NoReturn]):
+        self.__connection.set_isolation_level(
+            psycopg2.extensions.ISOLATION_LEVEL_AUTOCOMMIT
+        )
+
+        cursor = self.__connection.cursor()
+        cursor.execute(f"LISTEN {NOTIFICATION_CHANNEL};")
+
+        while True:
+            if select.select([self.__connection], [], [], 5) != ([], [], []):
+                self.__connection.poll()
+                while self.__connection.notifies:
+                    notify = self.__connection.notifies.pop(0)
+                    LOG.debug(
+                        f"Got NOTIFY: pid={notify.pid} channel={notify.channel} payload={notify.payload}"
+                    )
+                    try:
+                        webhook_id = int(notify.payload)
+                        event = SyncEvent.get_by(id=webhook_id)
+                        if event is not None:
+                            if event.mark_as_taken():
+                                on_event(event)
+                            else:
+                                LOG.info(
+                                    f"Event {event.id} was handled by another runner"
+                                )
+                        else:
+                            LOG.info(f"Could not find event with id={notify.payload}")
+                    except Exception as e:
+                        LOG.warn(f"Error getting event: {e}")
+
+    def __connect(self):
+        self.__connection = psycopg2.connect(self.__connection_string)
+
+        from app.db import Session
+
+        Session.close()
+
+
+class DeadLetterEventSource(EventSource):
+    @newrelic.agent.background_task()
+    def run(self, on_event: Callable[[SyncEvent], NoReturn]):
+        while True:
+            try:
+                threshold = arrow.utcnow().shift(
+                    minutes=-_DEAD_LETTER_THRESHOLD_MINUTES
+                )
+                events = SyncEvent.get_dead_letter(older_than=threshold)
+                if events:
+                    LOG.info(f"Got {len(events)} dead letter events")
+                    if events:
+                        newrelic.agent.record_custom_metric(
+                            "Custom/dead_letter_events_to_process", len(events)
+                        )
+                    for event in events:
+                        on_event(event)
+                else:
+                    LOG.debug("No dead letter events")
+                    sleep(_DEAD_LETTER_INTERVAL_SECONDS)
+            except Exception as e:
+                LOG.warn(f"Error getting dead letter event: {e}")
+                sleep(_DEAD_LETTER_INTERVAL_SECONDS)

app/events/runner.py

@@ -0,0 +1,42 @@
+import arrow
+import newrelic.agent
+
+from app.log import LOG
+from app.models import SyncEvent
+from events.event_sink import EventSink
+from events.event_source import EventSource
+
+
+class Runner:
+    def __init__(self, source: EventSource, sink: EventSink):
+        self.__source = source
+        self.__sink = sink
+
+    def run(self):
+        self.__source.run(self.__on_event)
+
+    @newrelic.agent.background_task()
+    def __on_event(self, event: SyncEvent):
+        try:
+            event_created_at = event.created_at
+            start_time = arrow.now()
+            success = self.__sink.process(event)
+            if success:
+                event_id = event.id
+                SyncEvent.delete(event.id, commit=True)
+                LOG.info(f"Marked {event_id} as done")
+
+                end_time = arrow.now() - start_time
+                time_between_taken_and_created = start_time - event_created_at
+
+                newrelic.agent.record_custom_metric("Custom/sync_event_processed", 1)
+                newrelic.agent.record_custom_metric(
+                    "Custom/sync_event_process_time", end_time.total_seconds()
+                )
+                newrelic.agent.record_custom_metric(
+                    "Custom/sync_event_elapsed_time",
+                    time_between_taken_and_created.total_seconds(),
+                )
+        except Exception as e:
+            LOG.warn(f"Exception processing event [id={event.id}]: {e}")
+            newrelic.agent.record_custom_metric("Custom/sync_event_failed", 1)

app/example.env

@@ -118,9 +118,7 @@ WORDS_FILE_PATH=local_data/test_words.txt
 
 # Login with OIDC
 # CONNECT_WITH_OIDC_ICON=fa-github
-# OIDC_AUTHORIZATION_URL=to_fill
+# OIDC_WELL_KNOWN_URL=to_fill
-# OIDC_USER_INFO_URL=to_fill
-# OIDC_TOKEN_URL=to_fill
 # OIDC_SCOPES=openid email profile
 # OIDC_NAME_FIELD=name
 # OIDC_CLIENT_ID=to_fill

app/migrations/versions/2024_040913_fa2f19bb4e5a_.py

@@ -0,0 +1,29 @@
+"""empty message
+
+Revision ID: fa2f19bb4e5a
+Revises: 52510a633d6f
+Create Date: 2024-04-09 13:12:26.305340
+
+"""
+import sqlalchemy_utils
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'fa2f19bb4e5a'
+down_revision = '52510a633d6f'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('users', sa.Column('enable_data_breach_check', sa.Boolean(), server_default='0', nullable=False))
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('users', 'enable_data_breach_check')
+    # ### end Alembic commands ###

app/migrations/versions/2024_051713_06a9a7133445_.py

@@ -0,0 +1,38 @@
+"""Create sync_event table
+
+Revision ID: 06a9a7133445
+Revises: fa2f19bb4e5a
+Create Date: 2024-05-17 13:11:20.402259
+
+"""
+import sqlalchemy_utils
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '06a9a7133445'
+down_revision = 'fa2f19bb4e5a'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('sync_event',
+    sa.Column('id', sa.Integer(), autoincrement=True, nullable=False),
+    sa.Column('created_at', sqlalchemy_utils.types.arrow.ArrowType(), nullable=False),
+    sa.Column('updated_at', sqlalchemy_utils.types.arrow.ArrowType(), nullable=True),
+    sa.Column('content', sa.LargeBinary(), nullable=False),
+    sa.Column('taken_time', sqlalchemy_utils.types.arrow.ArrowType(), nullable=True),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_sync_event_created_at'), 'sync_event', ['created_at'], unique=False)
+    op.create_index(op.f('ix_sync_event_taken_time'), 'sync_event', ['taken_time'], unique=False)
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('sync_event')
+    # ### end Alembic commands ###

app/monitoring.py

@@ -4,6 +4,7 @@ import subprocess
 from time import sleep
 from typing import List, Dict
 
+import arrow
 import newrelic.agent
 
 from app.db import Session
@@ -93,11 +94,44 @@ def log_nb_db_connection():
     newrelic.agent.record_custom_metric("Custom/nb_db_connections", nb_connection)
 
 
+@newrelic.agent.background_task()
+def log_pending_to_process_events():
+    r = Session.execute("select count(*) from sync_event WHERE taken_time IS NULL;")
+    events_pending = list(r)[0][0]
+
+    LOG.d("number of events pending to process %s", events_pending)
+    newrelic.agent.record_custom_metric(
+        "Custom/sync_events_pending_to_process", events_pending
+    )
+
+
+@newrelic.agent.background_task()
+def log_events_pending_dead_letter():
+    since = arrow.now().shift(minutes=-10).datetime
+    r = Session.execute(
+        """
+        SELECT COUNT(*)
+        FROM sync_event
+        WHERE (taken_time IS NOT NULL AND taken_time < :since)
+           OR (taken_time IS NULL AND created_at < :since)
+        """,
+        {"since": since},
+    )
+    events_pending = list(r)[0][0]
+
+    LOG.d("number of events pending dead letter %s", events_pending)
+    newrelic.agent.record_custom_metric(
+        "Custom/sync_events_pending_dead_letter", events_pending
+    )
+
+
 if __name__ == "__main__":
     exporter = MetricExporter(get_newrelic_license())
     while True:
         log_postfix_metrics()
         log_nb_db_connection()
+        log_pending_to_process_events()
+        log_events_pending_dead_letter()
         Session.close()
 
         exporter.run()

app/proto/event.proto

@@ -0,0 +1,45 @@
+syntax = "proto3";
+
+package simplelogin_events;
+
+message UserPlanChange {
+  uint32 plan_end_time = 1;
+}
+
+message UserDeleted {
+}
+
+message AliasCreated {
+  uint32 alias_id = 1;
+  string alias_email = 2;
+  string alias_note = 3;
+  bool enabled = 4;
+}
+
+message AliasStatusChange {
+  uint32 alias_id = 1;
+  string alias_email = 2;
+  bool enabled = 3;
+}
+
+message AliasDeleted {
+  uint32 alias_id = 1;
+  string alias_email = 2;
+}
+
+message EventContent {
+  oneof content {
+    UserPlanChange user_plan_change = 1;
+    UserDeleted user_deleted = 2;
+    AliasCreated alias_created = 3;
+    AliasStatusChange alias_status_change = 4;
+    AliasDeleted alias_deleted = 5;
+  }
+}
+
+message Event {
+  uint32 user_id = 1;
+  string external_user_id = 2;
+  uint32 partner_id = 3;
+  EventContent content = 4;
+}

app/pyproject.toml

@@ -14,13 +14,14 @@ exclude = '''
     | build
     | dist
     | migrations    # migrations/ is generated by alembic
+    | app/events/generated
   )/
 )
 '''
 
 [tool.ruff]
 ignore-init-module-imports = true
-exclude = [".venv", "migrations"]
+exclude = [".venv", "migrations", "app/events/generated"]
 
 [tool.djlint]
 indent = 2

app/scripts/generate-proto-files.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+set -euxo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" || exit 1; pwd -P)"
+REPO_ROOT=$(echo "${SCRIPT_DIR}" | sed 's:scripts::g')
+
+DEST_DIR="${REPO_ROOT}/app/events/generated"
+
+PROTOC=${PROTOC:-"protoc"}
+
+if ! eval "${PROTOC} --version" &> /dev/null ; then
+  echo "Cannot find $PROTOC"
+  exit 1
+fi
+
+rm -rf "${DEST_DIR}"
+mkdir -p "${DEST_DIR}"
+
+pushd $REPO_ROOT || exit 1
+
+eval "${PROTOC} --proto_path=proto --python_out=\"${DEST_DIR}\" --pyi_out=\"${DEST_DIR}\" proto/event.proto"
+
+popd || exit 1

app/templates/dashboard/setting.html

@@ -249,6 +249,42 @@
       </div>
     </div>
     <!-- END Random alias -->
+    <!-- Data breach check -->
+    <div class="card" id="data-breach">
+      <div class="card-body">
+        <div class="card-title">Data breach monitoring</div>
+        <div class="mt-1 mb-3">
+          {% if not current_user.is_premium() %}
+
+            <div class="alert alert-info" role="alert">
+              This feature is only available on Premium plan.
+              <a href="{{ url_for('dashboard.pricing') }}"
+                 target="_blank"
+                 rel="noopener noreferrer">
+                Upgrade<i class="fe fe-external-link"></i>
+              </a>
+            </div>
+          {% endif %}
+          If enabled, we will inform you via email if one of your aliases appears in a data breach.
+          <br>
+          SimpleLogin uses <a href="https://haveibeenpwned.com/">HaveIBeenPwned</a> API for checking for data breaches.
+        </div>
+        <form method="post" action="#data-breach">
+          {{ csrf_form.csrf_token }}
+          <input type="hidden" name="form-name" value="enable_data_breach_check">
+          <div class="form-check">
+            <input type="checkbox"
+                   id="enable_data_breach_check"
+                   name="enable_data_breach_check"
+                   {% if current_user.enable_data_breach_check %} checked{% endif %}
+                   class="form-check-input">
+            <label for="enable_data_breach_check">Enable data breach monitoring</label>
+          </div>
+          <button type="submit" class="btn btn-outline-primary">Update</button>
+        </form>
+      </div>
+    </div>
+    <!-- END Data breach check -->
     <!-- Sender Format -->
     <div class="card" id="sender-format">
       <div class="card-body">
@@ -285,7 +321,9 @@
               No Name (i.e. only reverse-alias)
             </option>
           </select>
-          <button class="btn btn-outline-primary mt-3">Update</button>
+          <button class="btn btn-outline-primary mt-3">
+            Update
+          </button>
         </form>
       </div>
     </div>
@@ -295,7 +333,9 @@
       <div class="card-body">
         <div class="card-title">
           Reverse Alias Replacement
-          <div class="badge badge-warning">Experimental</div>
+          <div class="badge badge-warning">
+            Experimental
+          </div>
         </div>
         <div class="mb-3">
           When replying to a forwarded email, the <b>reverse-alias</b> can be automatically included
@@ -312,9 +352,13 @@
                    name="replace-ra"
                    {% if current_user.replace_reverse_alias %} checked{% endif %}
                    class="form-check-input">
-            <label for="replace-ra">Enable replacing reverse alias</label>
+            <label for="replace-ra">
+              Enable replacing reverse alias
+            </label>
           </div>
-          <button type="submit" class="btn btn-outline-primary">Update</button>
+          <button type="submit" class="btn btn-outline-primary">
+            Update
+          </button>
         </form>
       </div>
     </div>

app/templates/menu.html

@@ -48,15 +48,16 @@
   {#      SIWSL#}
   {#    </a>#}
   {#  </li>#}
-  {#  {% if current_user.should_show_app_page() %}#}
+  {% if current_user.should_show_app_page() %}
-  {#    <li class="nav-item">#}
+
-  {#      <a href="{{ url_for('dashboard.app_route') }}"#}
+    <li class="nav-item">
-  {#         class="nav-link {{ 'active' if active_page == 'app' }}">#}
+      <a href="{{ url_for('dashboard.app_route') }}"
-  {#        <i class="fe fe-grid"></i>#}
+         class="nav-link {{ 'active' if active_page == 'app' }}">
-  {#        Apps#}
+        <i class="fe fe-grid"></i>
-  {#      </a>#}
+        Apps
-  {#    </li>#}
+      </a>
-  {#  {% endif %}#}
+    </li>
+  {% endif %}
   <li class="nav-item">
     <a href="{{ url_for('dashboard.setting') }}"
        class="nav-link {{ 'active' if active_page == 'setting' }}">

app/tests/auth/test_oidc.py

@@ -1,5 +1,5 @@
 from app import config
-from flask import url_for
+from flask import url_for, session
 from urllib.parse import parse_qs
 from urllib3.util import parse_url
 from app.auth.views.oidc import create_user
@@ -10,7 +10,21 @@ from app.models import User
 from app.config import URL, OIDC_CLIENT_ID
 
 
-def test_oidc_login(flask_client):
+mock_well_known_response = {
+    "authorization_endpoint": "http://localhost:7777/authorization-endpoint",
+    "userinfo_endpoint": "http://localhost:7777/userinfo-endpoint",
+    "token_endpoint": "http://localhost:7777/token-endpoint",
+}
+
+
+@patch("requests.get")
+def test_oidc_login(mock_get, flask_client):
+    config.OIDC_WELL_KNOWN_URL = "http://localhost:7777/well-known-url"
+    with flask_client.session_transaction() as sess:
+        sess["oauth_redirect_next"] = None
+
+    mock_get.return_value.json.return_value = mock_well_known_response
+
     r = flask_client.get(
         url_for("auth.oidc_login"),
         follow_redirects=False,
@@ -28,8 +42,41 @@ def test_oidc_login(flask_client):
     assert expected_redirect_url == query["redirect_uri"][0]
 
 
-def test_oidc_login_no_client_id(flask_client):
+@patch("requests.get")
+def test_oidc_login_next_url(mock_get, flask_client):
+    config.OIDC_WELL_KNOWN_URL = "http://localhost:7777/well-known-url"
+    with flask_client.session_transaction() as sess:
+        sess["oauth_redirect_next"] = None
+
+    mock_get.return_value.json.return_value = mock_well_known_response
+
+    with flask_client:
+        r = flask_client.get(
+            url_for("auth.oidc_login", next="/dashboard/settings/"),
+            follow_redirects=False,
+        )
+        location = r.headers.get("Location")
+        assert location is not None
+
+        parsed = parse_url(location)
+        query = parse_qs(parsed.query)
+
+        expected_redirect_url = f"{URL}/auth/oidc/callback"
+
+        assert "code" == query["response_type"][0]
+        assert OIDC_CLIENT_ID == query["client_id"][0]
+        assert expected_redirect_url == query["redirect_uri"][0]
+        assert session["oauth_redirect_next"] == "/dashboard/settings/"
+
+
+@patch("requests.get")
+def test_oidc_login_no_client_id(mock_get, flask_client):
     config.OIDC_CLIENT_ID = None
+    config.OIDC_WELL_KNOWN_URL = "http://localhost:7777/well-known-url"
+    with flask_client.session_transaction() as sess:
+        sess["oauth_redirect_next"] = None
+
+    mock_get.return_value.json.return_value = mock_well_known_response
 
     r = flask_client.get(
         url_for("auth.oidc_login"),
@@ -47,8 +94,14 @@ def test_oidc_login_no_client_id(flask_client):
     config.OIDC_CLIENT_ID = "to_fill"
 
 
-def test_oidc_login_no_client_secret(flask_client):
+@patch("requests.get")
+def test_oidc_login_no_client_secret(mock_get, flask_client):
     config.OIDC_CLIENT_SECRET = None
+    config.OIDC_WELL_KNOWN_URL = "http://localhost:7777/well-known-url"
+    with flask_client.session_transaction() as sess:
+        sess["oauth_redirect_next"] = None
+
+    mock_get.return_value.json.return_value = mock_well_known_response
 
     r = flask_client.get(
         url_for("auth.oidc_login"),
@@ -66,9 +119,14 @@ def test_oidc_login_no_client_secret(flask_client):
     config.OIDC_CLIENT_SECRET = "to_fill"
 
 
-def test_oidc_callback_no_oauth_state(flask_client):
+@patch("requests.get")
-    with flask_client.session_transaction() as session:
+def test_oidc_callback_no_oauth_state(mock_get, flask_client):
-        session["oauth_state"] = None
+    config.OIDC_WELL_KNOWN_URL = "http://localhost:7777/well-known-url"
+    with flask_client.session_transaction() as sess:
+        sess["oauth_redirect_next"] = None
+        sess["oauth_state"] = None
+
+    mock_get.return_value.json.return_value = mock_well_known_response
 
     r = flask_client.get(
         url_for("auth.oidc_callback"),
@@ -78,11 +136,16 @@ def test_oidc_callback_no_oauth_state(flask_client):
     assert location is None
 
 
-def test_oidc_callback_no_client_id(flask_client):
+@patch("requests.get")
-    with flask_client.session_transaction() as session:
+def test_oidc_callback_no_client_id(mock_get, flask_client):
-        session["oauth_state"] = "state"
+    config.OIDC_WELL_KNOWN_URL = "http://localhost:7777/well-known-url"
+    with flask_client.session_transaction() as sess:
+        sess["oauth_redirect_next"] = None
+        sess["oauth_state"] = "state"
     config.OIDC_CLIENT_ID = None
 
+    mock_get.return_value.json.return_value = mock_well_known_response
+
     r = flask_client.get(
         url_for("auth.oidc_callback"),
         follow_redirects=False,
@@ -97,15 +160,20 @@ def test_oidc_callback_no_client_id(flask_client):
     assert expected_redirect_url == parsed.path
 
     config.OIDC_CLIENT_ID = "to_fill"
-    with flask_client.session_transaction() as session:
+    with flask_client.session_transaction() as sess:
-        session["oauth_state"] = None
+        sess["oauth_state"] = None
 
 
-def test_oidc_callback_no_client_secret(flask_client):
+@patch("requests.get")
-    with flask_client.session_transaction() as session:
+def test_oidc_callback_no_client_secret(mock_get, flask_client):
-        session["oauth_state"] = "state"
+    config.OIDC_WELL_KNOWN_URL = "http://localhost:7777/well-known-url"
+    with flask_client.session_transaction() as sess:
+        sess["oauth_redirect_next"] = None
+        sess["oauth_state"] = "state"
     config.OIDC_CLIENT_SECRET = None
 
+    mock_get.return_value.json.return_value = mock_well_known_response
+
     r = flask_client.get(
         url_for("auth.oidc_callback"),
         follow_redirects=False,
@@ -120,16 +188,23 @@ def test_oidc_callback_no_client_secret(flask_client):
     assert expected_redirect_url == parsed.path
 
     config.OIDC_CLIENT_SECRET = "to_fill"
-    with flask_client.session_transaction() as session:
+    with flask_client.session_transaction() as sess:
-        session["oauth_state"] = None
+        sess["oauth_state"] = None
 
 
+@patch("requests.get")
 @patch("requests_oauthlib.OAuth2Session.fetch_token")
 @patch("requests_oauthlib.OAuth2Session.get")
-def test_oidc_callback_invalid_user(mock_get, mock_fetch_token, flask_client):
+def test_oidc_callback_invalid_user(
-    mock_get.return_value = MockResponse(400, {})
+    mock_oauth_get, mock_fetch_token, mock_get, flask_client
-    with flask_client.session_transaction() as session:
+):
-        session["oauth_state"] = "state"
+    mock_oauth_get.return_value = MockResponse(400, {})
+    config.OIDC_WELL_KNOWN_URL = "http://localhost:7777/well-known-url"
+    with flask_client.session_transaction() as sess:
+        sess["oauth_redirect_next"] = None
+        sess["oauth_state"] = "state"
+
+    mock_get.return_value.json.return_value = mock_well_known_response
 
     r = flask_client.get(
         url_for("auth.oidc_callback"),
@@ -143,18 +218,25 @@ def test_oidc_callback_invalid_user(mock_get, mock_fetch_token, flask_client):
     expected_redirect_url = "/auth/login"
 
     assert expected_redirect_url == parsed.path
-    assert mock_get.called
+    assert mock_oauth_get.called
 
-    with flask_client.session_transaction() as session:
+    with flask_client.session_transaction() as sess:
-        session["oauth_state"] = None
+        sess["oauth_state"] = None
 
 
+@patch("requests.get")
 @patch("requests_oauthlib.OAuth2Session.fetch_token")
 @patch("requests_oauthlib.OAuth2Session.get")
-def test_oidc_callback_no_email(mock_get, mock_fetch_token, flask_client):
+def test_oidc_callback_no_email(
-    mock_get.return_value = MockResponse(200, {})
+    mock_oauth_get, mock_fetch_token, mock_get, flask_client
-    with flask_client.session_transaction() as session:
+):
-        session["oauth_state"] = "state"
+    mock_oauth_get.return_value = MockResponse(200, {})
+    config.OIDC_WELL_KNOWN_URL = "http://localhost:7777/well-known-url"
+    with flask_client.session_transaction() as sess:
+        sess["oauth_redirect_next"] = None
+        sess["oauth_state"] = "state"
+
+    mock_get.return_value.json.return_value = mock_well_known_response
 
     r = flask_client.get(
         url_for("auth.oidc_callback"),
@@ -168,20 +250,27 @@ def test_oidc_callback_no_email(mock_get, mock_fetch_token, flask_client):
     expected_redirect_url = "/auth/login"
 
     assert expected_redirect_url == parsed.path
-    assert mock_get.called
+    assert mock_oauth_get.called
 
     with flask_client.session_transaction() as session:
         session["oauth_state"] = None
 
 
+@patch("requests.get")
 @patch("requests_oauthlib.OAuth2Session.fetch_token")
 @patch("requests_oauthlib.OAuth2Session.get")
-def test_oidc_callback_disabled_registration(mock_get, mock_fetch_token, flask_client):
+def test_oidc_callback_disabled_registration(
+    mock_oauth_get, mock_fetch_token, mock_get, flask_client
+):
     config.DISABLE_REGISTRATION = True
     email = random_string()
-    mock_get.return_value = MockResponse(200, {"email": email})
+    mock_oauth_get.return_value = MockResponse(200, {"email": email})
-    with flask_client.session_transaction() as session:
+    config.OIDC_WELL_KNOWN_URL = "http://localhost:7777/well-known-url"
-        session["oauth_state"] = "state"
+    with flask_client.session_transaction() as sess:
+        sess["oauth_redirect_next"] = None
+        sess["oauth_state"] = "state"
+
+    mock_get.return_value.json.return_value = mock_well_known_response
 
     r = flask_client.get(
         url_for("auth.oidc_callback"),
@@ -195,26 +284,33 @@ def test_oidc_callback_disabled_registration(mock_get, mock_fetch_token, flask_c
     expected_redirect_url = "/auth/register"
 
     assert expected_redirect_url == parsed.path
-    assert mock_get.called
+    assert mock_oauth_get.called
 
     config.DISABLE_REGISTRATION = False
-    with flask_client.session_transaction() as session:
+    with flask_client.session_transaction() as sess:
-        session["oauth_state"] = None
+        sess["oauth_state"] = None
 
 
+@patch("requests.get")
 @patch("requests_oauthlib.OAuth2Session.fetch_token")
 @patch("requests_oauthlib.OAuth2Session.get")
-def test_oidc_callback_registration(mock_get, mock_fetch_token, flask_client):
+def test_oidc_callback_registration(
+    mock_oauth_get, mock_fetch_token, mock_get, flask_client
+):
     email = random_string()
-    mock_get.return_value = MockResponse(
+    mock_oauth_get.return_value = MockResponse(
         200,
         {
             "email": email,
             config.OIDC_NAME_FIELD: "name",
         },
     )
-    with flask_client.session_transaction() as session:
+    config.OIDC_WELL_KNOWN_URL = "http://localhost:7777/well-known-url"
-        session["oauth_state"] = "state"
+    with flask_client.session_transaction() as sess:
+        sess["oauth_redirect_next"] = None
+        sess["oauth_state"] = "state"
+
+    mock_get.return_value.json.return_value = mock_well_known_response
 
     user = User.get_by(email=email)
     assert user is None
@@ -231,28 +327,33 @@ def test_oidc_callback_registration(mock_get, mock_fetch_token, flask_client):
     expected_redirect_url = "/dashboard/"
 
     assert expected_redirect_url == parsed.path
-    assert mock_get.called
+    assert mock_oauth_get.called
 
     user = User.get_by(email=email)
     assert user is not None
     assert user.email == email
 
-    with flask_client.session_transaction() as session:
+    with flask_client.session_transaction() as sess:
-        session["oauth_state"] = None
+        sess["oauth_state"] = None
 
 
+@patch("requests.get")
 @patch("requests_oauthlib.OAuth2Session.fetch_token")
 @patch("requests_oauthlib.OAuth2Session.get")
-def test_oidc_callback_login(mock_get, mock_fetch_token, flask_client):
+def test_oidc_callback_login(mock_oauth_get, mock_fetch_token, mock_get, flask_client):
     email = random_string()
-    mock_get.return_value = MockResponse(
+    mock_oauth_get.return_value = MockResponse(
         200,
         {
             "email": email,
         },
     )
-    with flask_client.session_transaction() as session:
+    config.OIDC_WELL_KNOWN_URL = "http://localhost:7777/well-known-url"
-        session["oauth_state"] = "state"
+    with flask_client.session_transaction() as sess:
+        sess["oauth_redirect_next"] = None
+        sess["oauth_state"] = "state"
+
+    mock_get.return_value.json.return_value = mock_well_known_response
 
     user = User.create(
         email=email,
@@ -275,10 +376,57 @@ def test_oidc_callback_login(mock_get, mock_fetch_token, flask_client):
     expected_redirect_url = "/dashboard/"
 
     assert expected_redirect_url == parsed.path
-    assert mock_get.called
+    assert mock_oauth_get.called
 
-    with flask_client.session_transaction() as session:
+    with flask_client.session_transaction() as sess:
-        session["oauth_state"] = None
+        sess["oauth_state"] = None
+
+
+@patch("requests.get")
+@patch("requests_oauthlib.OAuth2Session.fetch_token")
+@patch("requests_oauthlib.OAuth2Session.get")
+def test_oidc_callback_login_with_next_url(
+    mock_oauth_get, mock_fetch_token, mock_get, flask_client
+):
+    email = random_string()
+    mock_oauth_get.return_value = MockResponse(
+        200,
+        {
+            "email": email,
+        },
+    )
+    config.OIDC_WELL_KNOWN_URL = "http://localhost:7777/well-known-url"
+    with flask_client.session_transaction() as sess:
+        sess["oauth_redirect_next"] = "/dashboard/settings/"
+        sess["oauth_state"] = "state"
+
+    mock_get.return_value.json.return_value = mock_well_known_response
+
+    user = User.create(
+        email=email,
+        name="name",
+        password="",
+        activated=True,
+    )
+    user = User.get_by(email=email)
+    assert user is not None
+
+    r = flask_client.get(
+        url_for("auth.oidc_callback"),
+        follow_redirects=False,
+    )
+    location = r.headers.get("Location")
+    assert location is not None
+
+    parsed = parse_url(location)
+
+    expected_redirect_url = "/dashboard/settings/"
+
+    assert expected_redirect_url == parsed.path
+    assert mock_oauth_get.called
+
+    with flask_client.session_transaction() as sess:
+        sess["oauth_state"] = None
 
 
 def test_create_user():

app/tests/cron/test_get_alias_for_hibp.py

@@ -31,6 +31,7 @@ def test_get_alias_for_free_user_has_no_alias():
 def test_get_alias_for_lifetime_with_null_hibp_date():
     user = create_new_user()
     user.lifetime = True
+    user.enable_data_breach_check = True
     alias_id = Alias.create_new_random(user).id
     Session.commit()
     aliases = list(
@@ -42,6 +43,7 @@ def test_get_alias_for_lifetime_with_null_hibp_date():
 def test_get_alias_for_lifetime_with_old_hibp_date():
     user = create_new_user()
     user.lifetime = True
+    user.enable_data_breach_check = True
     alias = Alias.create_new_random(user)
     alias.hibp_last_check = arrow.now().shift(days=-1)
     alias_id = alias.id
@@ -97,6 +99,7 @@ sub_generator_list = [
 @pytest.mark.parametrize("sub_generator", sub_generator_list)
 def test_get_alias_for_sub(sub_generator):
     user = create_new_user()
+    user.enable_data_breach_check = True
     sub_generator(user)
     alias_id = Alias.create_new_random(user).id
     Session.commit()
@@ -140,3 +143,26 @@ def test_already_checked_is_not_checked():
         cron.get_alias_to_check_hibp(arrow.now(), [user.id], alias_id, alias_id + 1)
     )
     assert len(aliases) == 0
+
+
+def test_outed_in_user_is_checked():
+    user = create_new_user()
+    user.lifetime = True
+    user.enable_data_breach_check = True
+    alias_id = Alias.create_new_random(user).id
+    Session.commit()
+    aliases = list(
+        cron.get_alias_to_check_hibp(arrow.now(), [], alias_id, alias_id + 1)
+    )
+    assert len(aliases) == 1
+
+
+def test_outed_out_user_is_not_checked():
+    user = create_new_user()
+    user.lifetime = True
+    alias_id = Alias.create_new_random(user).id
+    Session.commit()
+    aliases = list(
+        cron.get_alias_to_check_hibp(arrow.now(), [], alias_id, alias_id + 1)
+    )
+    assert len(aliases) == 0

app/tests/events/test_event_dispatcher.py

@@ -0,0 +1,56 @@
+from app.events.event_dispatcher import EventDispatcher, Dispatcher
+from app.events.generated.event_pb2 import EventContent, UserDeleted
+from app.models import PartnerUser, User
+from app.proton.utils import get_proton_partner
+from tests.utils import create_new_user, random_token
+from typing import Tuple
+
+
+class OnMemoryDispatcher(Dispatcher):
+    def __init__(self):
+        self.memory = []
+
+    def send(self, event: bytes):
+        self.memory.append(event)
+
+
+def _create_unlinked_user() -> User:
+    return create_new_user()
+
+
+def _create_linked_user() -> Tuple[User, PartnerUser]:
+    user = _create_unlinked_user()
+    partner_user = PartnerUser.create(
+        partner_id=get_proton_partner().id,
+        user_id=user.id,
+        external_user_id=random_token(10),
+        flush=True,
+    )
+
+    return user, partner_user
+
+
+def test_event_dispatcher_stores_events():
+    dispatcher = OnMemoryDispatcher()
+
+    (user, partner) = _create_linked_user()
+    content = EventContent(user_deleted=UserDeleted())
+    EventDispatcher.send_event(user, content, dispatcher, skip_if_webhook_missing=False)
+    assert len(dispatcher.memory) == 1
+
+    content = EventContent(user_deleted=UserDeleted())
+    EventDispatcher.send_event(user, content, dispatcher, skip_if_webhook_missing=False)
+    assert len(dispatcher.memory) == 2
+
+
+def test_event_dispatcher_does_not_send_event_if_user_not_linked():
+    dispatcher = OnMemoryDispatcher()
+
+    user = _create_unlinked_user()
+    content = EventContent(user_deleted=UserDeleted())
+    EventDispatcher.send_event(user, content, dispatcher, skip_if_webhook_missing=False)
+    assert len(dispatcher.memory) == 0
+
+    content = EventContent(user_deleted=UserDeleted())
+    EventDispatcher.send_event(user, content, dispatcher, skip_if_webhook_missing=False)
+    assert len(dispatcher.memory) == 0

app/tests/test.env

@@ -51,9 +51,7 @@ FACEBOOK_CLIENT_SECRET=to_fill
 
 # Login with OIDC
 CONNECT_WITH_OIDC_ICON=fa-github
-OIDC_AUTHORIZATION_URL=to_fill
+OIDC_WELL_KNOWN_URL=to_fill
-OIDC_USER_INFO_URL=to_fill
-OIDC_TOKEN_URL=to_fill
 OIDC_SCOPES=openid email profile
 OIDC_NAME_FIELD=name
 OIDC_CLIENT_ID=to_fill

app/tests/test_models.py

@@ -17,6 +17,7 @@ from app.models import (
     Subscription,
     PlanEnum,
     PADDLE_SUBSCRIPTION_GRACE_DAYS,
+    SyncEvent,
 )
 from tests.utils import login, create_new_user, random_token
 
@@ -325,3 +326,51 @@ def test_user_can_send_receive():
     user.disabled = False
     user.delete_on = arrow.now()
     assert not user.can_send_or_receive()
+
+
+def test_sync_event_dead_letter():
+    # remove all SyncEvents before the test
+    all_events = SyncEvent.all()
+    for event in all_events:
+        SyncEvent.delete(event.id, commit=True)
+
+    # create an expired not taken event
+    e1 = SyncEvent.create(
+        content=b"content",
+        created_at=arrow.now().shift(minutes=-15),
+        taken_time=None,
+        commit=True,
+    )
+
+    # create an expired taken event (but too long ago)
+    e2 = SyncEvent.create(
+        content=b"content",
+        created_at=arrow.now().shift(minutes=-15),
+        taken_time=arrow.now().shift(minutes=-14),
+        commit=True,
+    )
+
+    # create an expired taken event (but recently)
+    e3 = SyncEvent.create(
+        content=b"content",
+        created_at=arrow.now().shift(minutes=-15),
+        taken_time=arrow.now().shift(minutes=-1),
+        commit=True,
+    )
+
+    # create a normal event
+    e4 = SyncEvent.create(
+        content=b"content",
+        created_at=arrow.now(),
+        commit=True,
+    )
+
+    # get dead letter events
+    dead_letter_events = SyncEvent.get_dead_letter(
+        older_than=arrow.now().shift(minutes=-10)
+    )
+    assert len(dead_letter_events) == 2
+    assert e1 in dead_letter_events
+    assert e2 in dead_letter_events
+    assert e3 not in dead_letter_events
+    assert e4 not in dead_letter_events