Remove unused django_etebase code.

master
Tom Hacohen 4 years ago
parent 0fa2f2da3b
commit 4ceb42780e

@ -62,7 +62,7 @@ Now you can initialise our django app.
And you are done! You can now run the debug server just to see everything works as expected by running:
```
./manage.py runserver 0.0.0.0:8000
uvicorn etebase_server.asgi:application --port 8000
```
Using the debug server in production is not recommended, so please read the following section for a proper deployment.

@ -1,3 +0,0 @@
from django.contrib import admin
# Register your models here.

@ -1,5 +0,0 @@
from django.apps import AppConfig
class DrfMsgpackConfig(AppConfig):
name = "drf_msgpack"

@ -1,14 +0,0 @@
import msgpack
from rest_framework.parsers import BaseParser
from rest_framework.exceptions import ParseError
class MessagePackParser(BaseParser):
media_type = "application/msgpack"
def parse(self, stream, media_type=None, parser_context=None):
try:
return msgpack.unpackb(stream.read(), raw=False)
except Exception as exc:
raise ParseError("MessagePack parse error - %s" % str(exc))

@ -1,15 +0,0 @@
import msgpack
from rest_framework.renderers import BaseRenderer
class MessagePackRenderer(BaseRenderer):
media_type = "application/msgpack"
format = "msgpack"
render_style = "binary"
charset = None
def render(self, data, media_type=None, renderer_context=None):
if data is None:
return b""
return msgpack.packb(data, use_bin_type=True)

@ -1,3 +0,0 @@
from django.shortcuts import render
# Create your views here.

@ -1,12 +0,0 @@
from rest_framework import serializers, status
class EtebaseValidationError(serializers.ValidationError):
def __init__(self, code, detail, status_code=status.HTTP_400_BAD_REQUEST):
super().__init__(
{
"code": code,
"detail": detail,
}
)
self.status_code = status_code

@ -1,14 +0,0 @@
from rest_framework.parsers import FileUploadParser
class ChunkUploadParser(FileUploadParser):
"""
Parser for chunk upload data.
"""
def get_filename(self, stream, media_type, parser_context):
"""
Detects the uploaded file name.
"""
view = parser_context["view"]
return parser_context["kwargs"][view.lookup_field]

@ -1,93 +0,0 @@
# Copyright © 2017 Tom Hacohen
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, version 3.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from rest_framework import permissions
from django_etebase.models import Collection, AccessLevels
def is_collection_admin(collection, user):
member = collection.members.filter(user=user).first()
return (member is not None) and (member.accessLevel == AccessLevels.ADMIN)
class IsCollectionAdmin(permissions.BasePermission):
"""
Custom permission to only allow owners of a collection to view it
"""
message = {
"detail": "Only collection admins can perform this operation.",
"code": "admin_access_required",
}
def has_permission(self, request, view):
collection_uid = view.kwargs["collection_uid"]
try:
collection = view.get_collection_queryset().get(main_item__uid=collection_uid)
return is_collection_admin(collection, request.user)
except Collection.DoesNotExist:
# If the collection does not exist, we want to 404 later, not permission denied.
return True
class IsCollectionAdminOrReadOnly(permissions.BasePermission):
"""
Custom permission to only allow owners of a collection to edit it
"""
message = {
"detail": "Only collection admins can edit collections.",
"code": "admin_access_required",
}
def has_permission(self, request, view):
collection_uid = view.kwargs.get("collection_uid", None)
# Allow creating new collections
if collection_uid is None:
return True
try:
collection = view.get_collection_queryset().get(main_item__uid=collection_uid)
if request.method in permissions.SAFE_METHODS:
return True
return is_collection_admin(collection, request.user)
except Collection.DoesNotExist:
# If the collection does not exist, we want to 404 later, not permission denied.
return True
class HasWriteAccessOrReadOnly(permissions.BasePermission):
"""
Custom permission to restrict write
"""
message = {
"detail": "You need write access to write to this collection",
"code": "no_write_access",
}
def has_permission(self, request, view):
collection_uid = view.kwargs["collection_uid"]
try:
collection = view.get_collection_queryset().get(main_item__uid=collection_uid)
if request.method in permissions.SAFE_METHODS:
return True
else:
member = collection.members.get(user=request.user)
return member.accessLevel != AccessLevels.READ_ONLY
except Collection.DoesNotExist:
# If the collection does not exist, we want to 404 later, not permission denied.
return True

@ -1,19 +0,0 @@
from rest_framework.utils.encoders import JSONEncoder as DRFJSONEncoder
from rest_framework.renderers import JSONRenderer as DRFJSONRenderer
from .serializers import b64encode
class JSONEncoder(DRFJSONEncoder):
def default(self, obj):
if isinstance(obj, bytes) or isinstance(obj, memoryview):
return b64encode(obj)
return super().default(obj)
class JSONRenderer(DRFJSONRenderer):
"""
Renderer which serializes to JSON with support for our base64
"""
encoder_class = JSONEncoder

@ -1,598 +0,0 @@
# Copyright © 2017 Tom Hacohen
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, version 3.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import base64
from django.core.files.base import ContentFile
from django.core import exceptions as django_exceptions
from django.contrib.auth import get_user_model
from django.db import IntegrityError, transaction
from rest_framework import serializers, status
from . import models
from .utils import get_user_queryset, create_user, CallbackContext
from .exceptions import EtebaseValidationError
User = get_user_model()
def process_revisions_for_item(item, revision_data):
chunks_objs = []
chunks = revision_data.pop("chunks_relation")
revision = models.CollectionItemRevision(**revision_data, item=item)
revision.validate_unique() # Verify there aren't any validation issues
for chunk in chunks:
uid = chunk[0]
chunk_obj = models.CollectionItemChunk.objects.filter(uid=uid).first()
content = chunk[1] if len(chunk) > 1 else None
# If the chunk already exists we assume it's fine. Otherwise, we upload it.
if chunk_obj is None:
if content is not None:
chunk_obj = models.CollectionItemChunk(uid=uid, collection=item.collection)
chunk_obj.chunkFile.save("IGNORED", ContentFile(content))
chunk_obj.save()
else:
raise EtebaseValidationError("chunk_no_content", "Tried to create a new chunk without content")
chunks_objs.append(chunk_obj)
stoken = models.Stoken.objects.create()
revision.stoken = stoken
revision.save()
for chunk in chunks_objs:
models.RevisionChunkRelation.objects.create(chunk=chunk, revision=revision)
return revision
def b64encode(value):
return base64.urlsafe_b64encode(value).decode("ascii").strip("=")
def b64decode(data):
data += "=" * ((4 - len(data) % 4) % 4)
return base64.urlsafe_b64decode(data)
def b64decode_or_bytes(data):
if isinstance(data, bytes):
return data
else:
return b64decode(data)
class BinaryBase64Field(serializers.Field):
def to_representation(self, value):
return value
def to_internal_value(self, data):
return b64decode_or_bytes(data)
class CollectionEncryptionKeyField(BinaryBase64Field):
def get_attribute(self, instance):
request = self.context.get("request", None)
if request is not None:
return instance.members.get(user=request.user).encryptionKey
return None
class CollectionTypeField(BinaryBase64Field):
def get_attribute(self, instance):
request = self.context.get("request", None)
if request is not None:
collection_type = instance.members.get(user=request.user).collectionType
return collection_type and collection_type.uid
return None
class UserSlugRelatedField(serializers.SlugRelatedField):
def get_queryset(self):
view = self.context.get("view", None)
return get_user_queryset(super().get_queryset(), context=CallbackContext(view.kwargs))
def __init__(self, **kwargs):
super().__init__(slug_field=User.USERNAME_FIELD, **kwargs)
def to_internal_value(self, data):
return super().to_internal_value(data.lower())
class ChunksField(serializers.RelatedField):
def to_representation(self, obj):
obj = obj.chunk
if self.context.get("prefetch") == "auto":
with open(obj.chunkFile.path, "rb") as f:
return (obj.uid, f.read())
else:
return (obj.uid,)
def to_internal_value(self, data):
content = data[1] if len(data) > 1 else None
if data[0] is None:
raise EtebaseValidationError("no_null", "null is not allowed")
return (data[0], b64decode_or_bytes(content) if content is not None else None)
class BetterErrorsMixin:
@property
def errors(self):
nice = []
errors = super().errors
for error_type in errors:
if error_type == "non_field_errors":
nice.extend(self.flatten_errors(None, errors[error_type]))
else:
nice.extend(self.flatten_errors(error_type, errors[error_type]))
if nice:
return {"code": "field_errors", "detail": "Field validations failed.", "errors": nice}
return {}
def flatten_errors(self, field_name, errors):
ret = []
if isinstance(errors, dict):
for error_key in errors:
error = errors[error_key]
ret.extend(self.flatten_errors("{}.{}".format(field_name, error_key), error))
else:
for error in errors:
if getattr(error, "messages", None):
message = error.messages[0]
else:
message = str(error)
ret.append(
{
"field": field_name,
"code": error.code,
"detail": message,
}
)
return ret
def transform_validation_error(self, prefix, err):
if hasattr(err, "error_dict"):
errors = self.flatten_errors(prefix, err.error_dict)
elif not hasattr(err, "message"):
errors = self.flatten_errors(prefix, err.error_list)
else:
raise EtebaseValidationError(err.code, err.message)
raise serializers.ValidationError(
{
"code": "field_errors",
"detail": "Field validations failed.",
"errors": errors,
}
)
class CollectionItemChunkSerializer(BetterErrorsMixin, serializers.ModelSerializer):
class Meta:
model = models.CollectionItemChunk
fields = ("uid", "chunkFile")
class CollectionItemRevisionSerializer(BetterErrorsMixin, serializers.ModelSerializer):
chunks = ChunksField(
source="chunks_relation",
queryset=models.RevisionChunkRelation.objects.all(),
style={"base_template": "input.html"},
many=True,
)
meta = BinaryBase64Field()
class Meta:
model = models.CollectionItemRevision
fields = ("chunks", "meta", "uid", "deleted")
extra_kwargs = {
"uid": {"validators": []}, # We deal with it in the serializers
}
class CollectionItemSerializer(BetterErrorsMixin, serializers.ModelSerializer):
encryptionKey = BinaryBase64Field(required=False, default=None, allow_null=True)
etag = serializers.CharField(allow_null=True, write_only=True)
content = CollectionItemRevisionSerializer(many=False)
class Meta:
model = models.CollectionItem
fields = ("uid", "version", "encryptionKey", "content", "etag")
def create(self, validated_data):
"""Function that's called when this serializer creates an item"""
validate_etag = self.context.get("validate_etag", False)
etag = validated_data.pop("etag")
revision_data = validated_data.pop("content")
uid = validated_data.pop("uid")
Model = self.__class__.Meta.model
with transaction.atomic():
instance, created = Model.objects.get_or_create(uid=uid, defaults=validated_data)
cur_etag = instance.etag if not created else None
# If we are trying to update an up to date item, abort early and consider it a success
if cur_etag == revision_data.get("uid"):
return instance
if validate_etag and cur_etag != etag:
raise EtebaseValidationError(
"wrong_etag",
"Wrong etag. Expected {} got {}".format(cur_etag, etag),
status_code=status.HTTP_409_CONFLICT,
)
if not created:
# We don't have to use select_for_update here because the unique constraint on current guards against
# the race condition. But it's a good idea because it'll lock and wait rather than fail.
current_revision = instance.revisions.filter(current=True).select_for_update().first()
# If we are just re-uploading the same revision, consider it a succes and return.
if current_revision.uid == revision_data.get("uid"):
return instance
current_revision.current = None
current_revision.save()
try:
process_revisions_for_item(instance, revision_data)
except django_exceptions.ValidationError as e:
self.transform_validation_error("content", e)
return instance
def update(self, instance, validated_data):
# We never update, we always update in the create method
raise NotImplementedError()
class CollectionItemDepSerializer(BetterErrorsMixin, serializers.ModelSerializer):
etag = serializers.CharField()
class Meta:
model = models.CollectionItem
fields = ("uid", "etag")
def validate(self, data):
item = self.__class__.Meta.model.objects.get(uid=data["uid"])
etag = data["etag"]
if item.etag != etag:
raise EtebaseValidationError(
"wrong_etag",
"Wrong etag. Expected {} got {}".format(item.etag, etag),
status_code=status.HTTP_409_CONFLICT,
)
return data
class CollectionItemBulkGetSerializer(BetterErrorsMixin, serializers.ModelSerializer):
etag = serializers.CharField(required=False)
class Meta:
model = models.CollectionItem
fields = ("uid", "etag")
class CollectionListMultiSerializer(BetterErrorsMixin, serializers.Serializer):
collectionTypes = serializers.ListField(child=BinaryBase64Field())
class CollectionSerializer(BetterErrorsMixin, serializers.ModelSerializer):
collectionKey = CollectionEncryptionKeyField()
collectionType = CollectionTypeField()
accessLevel = serializers.SerializerMethodField("get_access_level_from_context")
stoken = serializers.CharField(read_only=True)
item = CollectionItemSerializer(many=False, source="main_item")
class Meta:
model = models.Collection
fields = ("item", "accessLevel", "collectionKey", "collectionType", "stoken")
def get_access_level_from_context(self, obj):
request = self.context.get("request", None)
if request is not None:
return obj.members.get(user=request.user).accessLevel
return None
def create(self, validated_data):
"""Function that's called when this serializer creates an item"""
collection_key = validated_data.pop("collectionKey")
collection_type = validated_data.pop("collectionType")
user = validated_data.get("owner")
main_item_data = validated_data.pop("main_item")
uid = main_item_data.get("uid")
etag = main_item_data.pop("etag")
revision_data = main_item_data.pop("content")
instance = self.__class__.Meta.model(uid=uid, **validated_data)
with transaction.atomic():
if etag is not None:
raise EtebaseValidationError("bad_etag", "etag is not null")
try:
instance.validate_unique()
except django_exceptions.ValidationError:
raise EtebaseValidationError(
"unique_uid", "Collection with this uid already exists", status_code=status.HTTP_409_CONFLICT
)
instance.save()
main_item = models.CollectionItem.objects.create(**main_item_data, collection=instance)
instance.main_item = main_item
instance.save()
process_revisions_for_item(main_item, revision_data)
collection_type_obj, _ = models.CollectionType.objects.get_or_create(uid=collection_type, owner=user)
models.CollectionMember(
collection=instance,
stoken=models.Stoken.objects.create(),
user=user,
accessLevel=models.AccessLevels.ADMIN,
encryptionKey=collection_key,
collectionType=collection_type_obj,
).save()
return instance
def update(self, instance, validated_data):
raise NotImplementedError()
class CollectionMemberSerializer(BetterErrorsMixin, serializers.ModelSerializer):
username = UserSlugRelatedField(
source="user",
read_only=True,
style={"base_template": "input.html"},
)
class Meta:
model = models.CollectionMember
fields = ("username", "accessLevel")
def create(self, validated_data):
raise NotImplementedError()
def update(self, instance, validated_data):
with transaction.atomic():
# We only allow updating accessLevel
access_level = validated_data.pop("accessLevel")
if instance.accessLevel != access_level:
instance.stoken = models.Stoken.objects.create()
instance.accessLevel = access_level
instance.save()
return instance
class CollectionInvitationSerializer(BetterErrorsMixin, serializers.ModelSerializer):
username = UserSlugRelatedField(
source="user",
queryset=User.objects,
style={"base_template": "input.html"},
)
collection = serializers.CharField(source="collection.uid")
fromUsername = serializers.CharField(source="fromMember.user.username", read_only=True)
fromPubkey = BinaryBase64Field(source="fromMember.user.userinfo.pubkey", read_only=True)
signedEncryptionKey = BinaryBase64Field()
class Meta:
model = models.CollectionInvitation
fields = (
"username",
"uid",
"collection",
"signedEncryptionKey",
"accessLevel",
"fromUsername",
"fromPubkey",
"version",
)
def validate_user(self, value):
request = self.context["request"]
if request.user.username == value.lower():
raise EtebaseValidationError("no_self_invite", "Inviting yourself is not allowed")
return value
def create(self, validated_data):
request = self.context["request"]
collection = validated_data.pop("collection")
member = collection.members.get(user=request.user)
with transaction.atomic():
try:
return type(self).Meta.model.objects.create(**validated_data, fromMember=member)
except IntegrityError:
raise EtebaseValidationError("invitation_exists", "Invitation already exists")
def update(self, instance, validated_data):
with transaction.atomic():
instance.accessLevel = validated_data.pop("accessLevel")
instance.signedEncryptionKey = validated_data.pop("signedEncryptionKey")
instance.save()
return instance
class InvitationAcceptSerializer(BetterErrorsMixin, serializers.Serializer):
collectionType = BinaryBase64Field()
encryptionKey = BinaryBase64Field()
def create(self, validated_data):
with transaction.atomic():
invitation = self.context["invitation"]
encryption_key = validated_data.get("encryptionKey")
collection_type = validated_data.pop("collectionType")
user = invitation.user
collection_type_obj, _ = models.CollectionType.objects.get_or_create(uid=collection_type, owner=user)
member = models.CollectionMember.objects.create(
collection=invitation.collection,
stoken=models.Stoken.objects.create(),
user=user,
accessLevel=invitation.accessLevel,
encryptionKey=encryption_key,
collectionType=collection_type_obj,
)
models.CollectionMemberRemoved.objects.filter(
user=invitation.user, collection=invitation.collection
).delete()
invitation.delete()
return member
def update(self, instance, validated_data):
raise NotImplementedError()
class UserSerializer(BetterErrorsMixin, serializers.ModelSerializer):
pubkey = BinaryBase64Field(source="userinfo.pubkey")
encryptedContent = BinaryBase64Field(source="userinfo.encryptedContent")
class Meta:
model = User
fields = (User.USERNAME_FIELD, User.EMAIL_FIELD, "pubkey", "encryptedContent")
class UserInfoPubkeySerializer(BetterErrorsMixin, serializers.ModelSerializer):
pubkey = BinaryBase64Field()
class Meta:
model = models.UserInfo
fields = ("pubkey",)
class UserSignupSerializer(BetterErrorsMixin, serializers.ModelSerializer):
class Meta:
model = User
fields = (User.USERNAME_FIELD, User.EMAIL_FIELD)
extra_kwargs = {
"username": {"validators": []}, # We specifically validate in SignupSerializer
}
class AuthenticationSignupSerializer(BetterErrorsMixin, serializers.Serializer):
"""Used both for creating new accounts and setting up existing ones for the first time.
When setting up existing ones the email is ignored."
"""
user = UserSignupSerializer(many=False)
salt = BinaryBase64Field()
loginPubkey = BinaryBase64Field()
pubkey = BinaryBase64Field()
encryptedContent = BinaryBase64Field()
def create(self, validated_data):
"""Function that's called when this serializer creates an item"""
user_data = validated_data.pop("user")
with transaction.atomic():
view = self.context.get("view", None)
try:
user_queryset = get_user_queryset(User.objects.all(), context=CallbackContext(view.kwargs))
instance = user_queryset.get(**{User.USERNAME_FIELD: user_data["username"].lower()})
except User.DoesNotExist:
# Create the user and save the casing the user chose as the first name
try:
instance = create_user(
**user_data,
password=None,
first_name=user_data["username"],
context=CallbackContext(view.kwargs)
)
instance.full_clean()
except EtebaseValidationError as e:
raise e
except django_exceptions.ValidationError as e:
self.transform_validation_error("user", e)
except Exception as e:
raise EtebaseValidationError("generic", str(e))
if hasattr(instance, "userinfo"):
raise EtebaseValidationError("user_exists", "User already exists", status_code=status.HTTP_409_CONFLICT)
models.UserInfo.objects.create(**validated_data, owner=instance)
return instance
def update(self, instance, validated_data):
raise NotImplementedError()
class AuthenticationLoginChallengeSerializer(BetterErrorsMixin, serializers.Serializer):
username = serializers.CharField(required=True)
def create(self, validated_data):
raise NotImplementedError()
def update(self, instance, validated_data):
raise NotImplementedError()
class AuthenticationLoginSerializer(BetterErrorsMixin, serializers.Serializer):
response = BinaryBase64Field()
signature = BinaryBase64Field()
def create(self, validated_data):
raise NotImplementedError()
def update(self, instance, validated_data):
raise NotImplementedError()
class AuthenticationLoginInnerSerializer(AuthenticationLoginChallengeSerializer):
challenge = BinaryBase64Field()
host = serializers.CharField()
action = serializers.CharField()
def create(self, validated_data):
raise NotImplementedError()
def update(self, instance, validated_data):
raise NotImplementedError()
class AuthenticationChangePasswordInnerSerializer(AuthenticationLoginInnerSerializer):
loginPubkey = BinaryBase64Field()
encryptedContent = BinaryBase64Field()
class Meta:
model = models.UserInfo
fields = ("loginPubkey", "encryptedContent")
def create(self, validated_data):
raise NotImplementedError()
def update(self, instance, validated_data):
with transaction.atomic():
instance.loginPubkey = validated_data.pop("loginPubkey")
instance.encryptedContent = validated_data.pop("encryptedContent")
instance.save()
return instance

@ -1,3 +0,0 @@
from django.test import TestCase
# Create your tests here.

@ -1,46 +0,0 @@
from django.utils import timezone
from django.utils.translation import gettext_lazy as _
from rest_framework import exceptions
from rest_framework.authentication import TokenAuthentication as DRFTokenAuthentication
from .models import AuthToken, get_default_expiry
AUTO_REFRESH = True
MIN_REFRESH_INTERVAL = 60
class TokenAuthentication(DRFTokenAuthentication):
keyword = "Token"
model = AuthToken
def authenticate_credentials(self, key):
msg = _("Invalid token.")
model = self.get_model()
try:
token = model.objects.select_related("user").get(key=key)
except model.DoesNotExist:
raise exceptions.AuthenticationFailed(msg)
if not token.user.is_active:
raise exceptions.AuthenticationFailed(_("User inactive or deleted."))
if token.expiry is not None:
if token.expiry < timezone.now():
token.delete()
raise exceptions.AuthenticationFailed(msg)
if AUTO_REFRESH:
self.renew_token(token)
return (token.user, token)
def renew_token(self, auth_token):
current_expiry = auth_token.expiry
new_expiry = get_default_expiry()
# Throttle refreshing of token to avoid db writes
delta = (new_expiry - current_expiry).total_seconds()
if delta > MIN_REFRESH_INTERVAL:
auth_token.expiry = new_expiry
auth_token.save(update_fields=("expiry",))

@ -1,30 +0,0 @@
from django.conf import settings
from django.conf.urls import include
from django.urls import path
from rest_framework_nested import routers
from django_etebase import views
router = routers.DefaultRouter()
router.register(r"collection", views.CollectionViewSet)
router.register(r"authentication", views.AuthenticationViewSet, basename="authentication")
router.register(r"invitation/incoming", views.InvitationIncomingViewSet, basename="invitation_incoming")
router.register(r"invitation/outgoing", views.InvitationOutgoingViewSet, basename="invitation_outgoing")
collections_router = routers.NestedSimpleRouter(router, r"collection", lookup="collection")
collections_router.register(r"item", views.CollectionItemViewSet, basename="collection_item")
collections_router.register(r"member", views.CollectionMemberViewSet, basename="collection_member")
item_router = routers.NestedSimpleRouter(collections_router, r"item", lookup="collection_item")
item_router.register(r"chunk", views.CollectionItemChunkViewSet, basename="collection_items_chunk")
if settings.DEBUG:
router.register(r"test/authentication", views.TestAuthenticationViewSet, basename="test_authentication")
app_name = "django_etebase"
urlpatterns = [
path("v1/", include(router.urls)),
path("v1/", include(collections_router.urls)),
path("v1/", include(item_router.urls)),
]

@ -1,861 +0,0 @@
# Copyright © 2017 Tom Hacohen
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, version 3.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import msgpack
from django.conf import settings
from django.contrib.auth import get_user_model, user_logged_in, user_logged_out
from django.core.exceptions import PermissionDenied
from django.db import transaction, IntegrityError
from django.db.models import Q
from django.http import HttpResponseBadRequest, HttpResponse, Http404
from django.shortcuts import get_object_or_404
from rest_framework import status
from rest_framework import viewsets
from rest_framework.decorators import action as action_decorator
from rest_framework.response import Response
from rest_framework.parsers import JSONParser, FormParser, MultiPartParser
from rest_framework.renderers import BrowsableAPIRenderer
from rest_framework.exceptions import AuthenticationFailed
from rest_framework.permissions import IsAuthenticated
import nacl.encoding
import nacl.signing
import nacl.secret
import nacl.hash
from .sendfile import sendfile
from .token_auth.models import AuthToken
from .drf_msgpack.parsers import MessagePackParser
from .drf_msgpack.renderers import MessagePackRenderer
from . import app_settings, permissions
from .renderers import JSONRenderer
from .models import (
Collection,
CollectionItem,
CollectionItemRevision,
CollectionMember,
CollectionMemberRemoved,
CollectionInvitation,
Stoken,
UserInfo,
)
from .serializers import (
AuthenticationChangePasswordInnerSerializer,
AuthenticationSignupSerializer,
AuthenticationLoginChallengeSerializer,
AuthenticationLoginSerializer,
AuthenticationLoginInnerSerializer,
CollectionSerializer,
CollectionItemSerializer,
CollectionItemBulkGetSerializer,
CollectionItemDepSerializer,
CollectionItemRevisionSerializer,
CollectionItemChunkSerializer,
CollectionListMultiSerializer,
CollectionMemberSerializer,
CollectionInvitationSerializer,
InvitationAcceptSerializer,
UserInfoPubkeySerializer,
UserSerializer,
)
from .utils import get_user_queryset, CallbackContext
from .exceptions import EtebaseValidationError
from .parsers import ChunkUploadParser
from .signals import user_signed_up
User = get_user_model()
def msgpack_encode(content):
return msgpack.packb(content, use_bin_type=True)
def msgpack_decode(content):
return msgpack.unpackb(content, raw=False)
class BaseViewSet(viewsets.ModelViewSet):
authentication_classes = tuple(app_settings.API_AUTHENTICATORS)
permission_classes = tuple(app_settings.API_PERMISSIONS)
renderer_classes = [JSONRenderer, MessagePackRenderer] + ([BrowsableAPIRenderer] if settings.DEBUG else [])
parser_classes = [JSONParser, MessagePackParser, FormParser, MultiPartParser]
stoken_annotation = None
def get_serializer_class(self):
serializer_class = self.serializer_class
if self.request.method == "PUT":
serializer_class = getattr(self, "serializer_update_class", serializer_class)
return serializer_class
def get_collection_queryset(self, queryset=Collection.objects):
user = self.request.user
return queryset.filter(members__user=user)
def get_stoken_obj_id(self, request):
return request.GET.get("stoken", None)
def get_stoken_obj(self, request):
stoken = self.get_stoken_obj_id(request)
if stoken is not None:
try:
return Stoken.objects.get(uid=stoken)
except Stoken.DoesNotExist:
raise EtebaseValidationError("bad_stoken", "Invalid stoken.", status_code=status.HTTP_400_BAD_REQUEST)
return None
def filter_by_stoken(self, request, queryset):
stoken_rev = self.get_stoken_obj(request)
queryset = queryset.annotate(max_stoken=self.stoken_annotation).order_by("max_stoken")
if stoken_rev is not None:
queryset = queryset.filter(max_stoken__gt=stoken_rev.id)
return queryset, stoken_rev
def get_queryset_stoken(self, queryset):
maxid = -1
for row in queryset:
rowmaxid = getattr(row, "max_stoken") or -1
maxid = max(maxid, rowmaxid)
new_stoken = (maxid >= 0) and Stoken.objects.get(id=maxid)
return new_stoken or None
def filter_by_stoken_and_limit(self, request, queryset):
limit = int(request.GET.get("limit", 50))
queryset, stoken_rev = self.filter_by_stoken(request, queryset)
result = list(queryset[: limit + 1])
if len(result) < limit + 1:
done = True
else:
done = False
result = result[:-1]
new_stoken_obj = self.get_queryset_stoken(result) or stoken_rev
return result, new_stoken_obj, done
# Change how our list works by default
def list(self, request, collection_uid=None, *args, **kwargs):
queryset = self.get_queryset()
serializer = self.get_serializer(queryset, many=True)
ret = {
"data": serializer.data,
"done": True, # we always return all the items, so it's always done
}
return Response(ret)
class CollectionViewSet(BaseViewSet):
allowed_methods = ["GET", "POST"]
permission_classes = BaseViewSet.permission_classes + (permissions.IsCollectionAdminOrReadOnly,)
queryset = Collection.objects.all()
serializer_class = CollectionSerializer
lookup_field = "uid"
lookup_url_kwarg = "uid"
stoken_annotation = Collection.stoken_annotation
def get_queryset(self, queryset=None):
if queryset is None:
queryset = type(self).queryset
return self.get_collection_queryset(queryset)
def get_serializer_context(self):
context = super().get_serializer_context()
prefetch = self.request.query_params.get("prefetch", "auto")
context.update({"request": self.request, "prefetch": prefetch})
return context
def destroy(self, request, uid=None, *args, **kwargs):
# FIXME: implement
return Response(status=status.HTTP_405_METHOD_NOT_ALLOWED)
def partial_update(self, request, uid=None, *args, **kwargs):
return Response(status=status.HTTP_405_METHOD_NOT_ALLOWED)
def update(self, request, *args, **kwargs):
return Response(status=status.HTTP_405_METHOD_NOT_ALLOWED)
def create(self, request, *args, **kwargs):
serializer = self.get_serializer(data=request.data)
serializer.is_valid(raise_exception=True)
serializer.save(owner=self.request.user)
return Response({}, status=status.HTTP_201_CREATED)
def list(self, request, *args, **kwargs):
queryset = self.get_queryset()
return self.list_common(request, queryset, *args, **kwargs)
@action_decorator(detail=False, methods=["POST"])
def list_multi(self, request, *args, **kwargs):
serializer = CollectionListMultiSerializer(data=request.data)
serializer.is_valid(raise_exception=True)
collection_types = serializer.validated_data["collectionTypes"]
queryset = self.get_queryset()
# FIXME: Remove the isnull part once we attach collection types to all objects ("collection-type-migration")
queryset = queryset.filter(
Q(members__collectionType__uid__in=collection_types) | Q(members__collectionType__isnull=True)
)
return self.list_common(request, queryset, *args, **kwargs)
def list_common(self, request, queryset, *args, **kwargs):
result, new_stoken_obj, done = self.filter_by_stoken_and_limit(request, queryset)
new_stoken = new_stoken_obj and new_stoken_obj.uid
serializer = self.get_serializer(result, many=True)
ret = {
"data": serializer.data,
"stoken": new_stoken,
"done": done,
}
stoken_obj = self.get_stoken_obj(request)
if stoken_obj is not None:
# FIXME: honour limit? (the limit should be combined for data and this because of stoken)
remed_qs = CollectionMemberRemoved.objects.filter(user=request.user, stoken__id__gt=stoken_obj.id)
if not ret["done"]:
# We only filter by the new_stoken if we are not done. This is because if we are done, the new stoken
# can point to the most recent collection change rather than most recent removed membership.
remed_qs = remed_qs.filter(stoken__id__lte=new_stoken_obj.id)
remed = remed_qs.values_list("collection__uid", flat=True)
if len(remed) > 0:
ret["removedMemberships"] = [{"uid": x} for x in remed]
return Response(ret)
class CollectionItemViewSet(BaseViewSet):
allowed_methods = ["GET", "POST", "PUT"]
permission_classes = BaseViewSet.permission_classes + (permissions.HasWriteAccessOrReadOnly,)
queryset = CollectionItem.objects.all()
serializer_class = CollectionItemSerializer
lookup_field = "uid"
stoken_annotation = CollectionItem.stoken_annotation
def get_queryset(self):
collection_uid = self.kwargs["collection_uid"]
try:
collection = self.get_collection_queryset(Collection.objects).get(uid=collection_uid)
except Collection.DoesNotExist:
raise Http404("Collection does not exist")
# XXX Potentially add this for performance: .prefetch_related('revisions__chunks')
queryset = type(self).queryset.filter(collection__pk=collection.pk, revisions__current=True)
return queryset
def get_serializer_context(self):
context = super().get_serializer_context()
prefetch = self.request.query_params.get("prefetch", "auto")
context.update({"request": self.request, "prefetch": prefetch})
return context
def create(self, request, collection_uid=None, *args, **kwargs):
# We create using batch and transaction
return Response(status=status.HTTP_405_METHOD_NOT_ALLOWED)
def destroy(self, request, collection_uid=None, uid=None, *args, **kwargs):
# We can't have destroy because we need to get data from the user (in the body) such as hmac.
return Response(status=status.HTTP_405_METHOD_NOT_ALLOWED)
def update(self, request, collection_uid=None, uid=None, *args, **kwargs):
return Response(status=status.HTTP_405_METHOD_NOT_ALLOWED)
def partial_update(self, request, collection_uid=None, uid=None, *args, **kwargs):
return Response(status=status.HTTP_405_METHOD_NOT_ALLOWED)
def list(self, request, collection_uid=None, *args, **kwargs):
queryset = self.get_queryset()
if not self.request.query_params.get("withCollection", False):
queryset = queryset.filter(parent__isnull=True)
result, new_stoken_obj, done = self.filter_by_stoken_and_limit(request, queryset)
new_stoken = new_stoken_obj and new_stoken_obj.uid
serializer = self.get_serializer(result, many=True)
ret = {
"data": serializer.data,
"stoken": new_stoken,
"done": done,
}
return Response(ret)
@action_decorator(detail=True, methods=["GET"])
def revision(self, request, collection_uid=None, uid=None, *args, **kwargs):
col = get_object_or_404(self.get_collection_queryset(Collection.objects), uid=collection_uid)
item = get_object_or_404(col.items, uid=uid)
limit = int(request.GET.get("limit", 50))
iterator = request.GET.get("iterator", None)
queryset = item.revisions.order_by("-id")
if iterator is not None:
iterator = get_object_or_404(queryset, uid=iterator)
queryset = queryset.filter(id__lt=iterator.id)
result = list(queryset[: limit + 1])
if len(result) < limit + 1:
done = True
else:
done = False
result = result[:-1]
serializer = CollectionItemRevisionSerializer(result, context=self.get_serializer_context(), many=True)
iterator = serializer.data[-1]["uid"] if len(result) > 0 else None
ret = {
"data": serializer.data,
"iterator": iterator,
"done": done,
}
return Response(ret)
# FIXME: rename to something consistent with what the clients have - maybe list_updates?
@action_decorator(detail=False, methods=["POST"])
def fetch_updates(self, request, collection_uid=None, *args, **kwargs):
queryset = self.get_queryset()
serializer = CollectionItemBulkGetSerializer(data=request.data, many=True)
serializer.is_valid(raise_exception=True)
# FIXME: make configurable?
item_limit = 200
if len(serializer.validated_data) > item_limit:
content = {"code": "too_many_items", "detail": "Request has too many items. Limit: {}".format(item_limit)}
return Response(content, status=status.HTTP_400_BAD_REQUEST)
queryset, stoken_rev = self.filter_by_stoken(request, queryset)
uids, etags = zip(*[(item["uid"], item.get("etag")) for item in serializer.validated_data])
revs = CollectionItemRevision.objects.filter(uid__in=etags, current=True)
queryset = queryset.filter(uid__in=uids).exclude(revisions__in=revs)
new_stoken_obj = self.get_queryset_stoken(queryset)
new_stoken = new_stoken_obj and new_stoken_obj.uid
stoken = stoken_rev and getattr(stoken_rev, "uid", None)
new_stoken = new_stoken or stoken
serializer = self.get_serializer(queryset, many=True)
ret = {
"data": serializer.data,
"stoken": new_stoken,
"done": True, # we always return all the items, so it's always done
}
return Response(ret)
@action_decorator(detail=False, methods=["POST"])
def batch(self, request, collection_uid=None, *args, **kwargs):
return self.transaction(request, collection_uid, validate_etag=False)
@action_decorator(detail=False, methods=["POST"])
def transaction(self, request, collection_uid=None, validate_etag=True, *args, **kwargs):
stoken = request.GET.get("stoken", None)
with transaction.atomic(): # We need this for locking on the collection object
collection_object = get_object_or_404(
self.get_collection_queryset(Collection.objects).select_for_update(), # Lock writes on the collection
uid=collection_uid,
)
if stoken is not None and stoken != collection_object.stoken:
content = {"code": "stale_stoken", "detail": "Stoken is too old"}
return Response(content, status=status.HTTP_409_CONFLICT)
items = request.data.get("items")
deps = request.data.get("deps", None)
# FIXME: It should just be one serializer
context = self.get_serializer_context()
context.update({"validate_etag": validate_etag})
serializer = self.get_serializer_class()(data=items, context=context, many=True)
deps_serializer = CollectionItemDepSerializer(data=deps, context=context, many=True)
ser_valid = serializer.is_valid()
deps_ser_valid = deps is None or deps_serializer.is_valid()
if ser_valid and deps_ser_valid:
items = serializer.save(collection=collection_object)
ret = {}
return Response(ret, status=status.HTTP_200_OK)
return Response(
{
"items": serializer.errors,
"deps": deps_serializer.errors if deps is not None else [],
},
status=status.HTTP_409_CONFLICT,
)
class CollectionItemChunkViewSet(viewsets.ViewSet):
allowed_methods = ["GET", "PUT"]
authentication_classes = BaseViewSet.authentication_classes
permission_classes = BaseViewSet.permission_classes
renderer_classes = BaseViewSet.renderer_classes
parser_classes = (ChunkUploadParser,)
serializer_class = CollectionItemChunkSerializer
lookup_field = "uid"
def get_serializer_class(self):
return self.serializer_class
def get_collection_queryset(self, queryset=Collection.objects):
user = self.request.user
return queryset.filter(members__user=user)
def update(self, request, *args, collection_uid=None, collection_item_uid=None, uid=None, **kwargs):
col = get_object_or_404(self.get_collection_queryset(), uid=collection_uid)
# IGNORED FOR NOW: col_it = get_object_or_404(col.items, uid=collection_item_uid)
data = {
"uid": uid,
"chunkFile": request.data["file"],
}
serializer = self.get_serializer_class()(data=data)
serializer.is_valid(raise_exception=True)
try:
serializer.save(collection=col)
except IntegrityError:
return Response(
{"code": "chunk_exists", "detail": "Chunk already exists."}, status=status.HTTP_409_CONFLICT
)
return Response({}, status=status.HTTP_201_CREATED)
@action_decorator(detail=True, methods=["GET"])
def download(self, request, collection_uid=None, collection_item_uid=None, uid=None, *args, **kwargs):
col = get_object_or_404(self.get_collection_queryset(), uid=collection_uid)
chunk = get_object_or_404(col.chunks, uid=uid)
filename = chunk.chunkFile.path
return sendfile(request, filename)
class CollectionMemberViewSet(BaseViewSet):
allowed_methods = ["GET", "PUT", "DELETE"]
our_base_permission_classes = BaseViewSet.permission_classes
permission_classes = our_base_permission_classes + (permissions.IsCollectionAdmin,)
queryset = CollectionMember.objects.all()
serializer_class = CollectionMemberSerializer
lookup_field = f"user__{User.USERNAME_FIELD}__iexact"
lookup_url_kwarg = "username"
stoken_annotation = CollectionMember.stoken_annotation
# FIXME: need to make sure that there's always an admin, and maybe also don't let an owner remove adm access
# (if we want to transfer, we need to do that specifically)
def get_queryset(self, queryset=None):
collection_uid = self.kwargs["collection_uid"]
try:
collection = self.get_collection_queryset(Collection.objects).get(uid=collection_uid)
except Collection.DoesNotExist:
raise Http404("Collection does not exist")
if queryset is None:
queryset = type(self).queryset
return queryset.filter(collection=collection)
# We override this method because we expect the stoken to be called iterator
def get_stoken_obj_id(self, request):
return request.GET.get("iterator", None)
def list(self, request, collection_uid=None, *args, **kwargs):
queryset = self.get_queryset().order_by("id")
result, new_stoken_obj, done = self.filter_by_stoken_and_limit(request, queryset)
new_stoken = new_stoken_obj and new_stoken_obj.uid
serializer = self.get_serializer(result, many=True)
ret = {
"data": serializer.data,
"iterator": new_stoken, # Here we call it an iterator, it's only stoken for collection/items
"done": done,
}
return Response(ret)
def create(self, request, *args, **kwargs):
return Response(status=status.HTTP_405_METHOD_NOT_ALLOWED)
# FIXME: block leaving if we are the last admins - should be deleted / assigned in this case depending if there
# are other memebers.
def perform_destroy(self, instance):
instance.revoke()
@action_decorator(detail=False, methods=["POST"], permission_classes=our_base_permission_classes)
def leave(self, request, collection_uid=None, *args, **kwargs):
collection_uid = self.kwargs["collection_uid"]
col = get_object_or_404(self.get_collection_queryset(Collection.objects), uid=collection_uid)
member = col.members.get(user=request.user)
self.perform_destroy(member)
return Response({})
class InvitationBaseViewSet(BaseViewSet):
queryset = CollectionInvitation.objects.all()
serializer_class = CollectionInvitationSerializer
lookup_field = "uid"
lookup_url_kwarg = "invitation_uid"
def list(self, request, collection_uid=None, *args, **kwargs):
limit = int(request.GET.get("limit", 50))
iterator = request.GET.get("iterator", None)
queryset = self.get_queryset().order_by("id")
if iterator is not None:
iterator = get_object_or_404(queryset, uid=iterator)
queryset = queryset.filter(id__gt=iterator.id)
result = list(queryset[: limit + 1])
if len(result) < limit + 1:
done = True
else:
done = False
result = result[:-1]
serializer = self.get_serializer(result, many=True)
iterator = serializer.data[-1]["uid"] if len(result) > 0 else None
ret = {
"data": serializer.data,
"iterator": iterator,
"done": done,
}
return Response(ret)
class InvitationOutgoingViewSet(InvitationBaseViewSet):
allowed_methods = ["GET", "POST", "PUT", "DELETE"]
def get_queryset(self, queryset=None):
if queryset is None:
queryset = type(self).queryset
return queryset.filter(fromMember__user=self.request.user)
def create(self, request, *args, **kwargs):
serializer = self.get_serializer(data=request.data)
serializer.is_valid(raise_exception=True)
collection_uid = serializer.validated_data.get("collection", {}).get("uid")
try:
collection = self.get_collection_queryset(Collection.objects).get(uid=collection_uid)
except Collection.DoesNotExist:
raise Http404("Collection does not exist")
if request.user == serializer.validated_data.get("user"):
content = {"code": "self_invite", "detail": "Inviting yourself is invalid"}
return Response(content, status=status.HTTP_400_BAD_REQUEST)
if not permissions.is_collection_admin(collection, request.user):
raise PermissionDenied(
{"code": "admin_access_required", "detail": "User is not an admin of this collection"}
)
serializer.save(collection=collection)
return Response({}, status=status.HTTP_201_CREATED)
@action_decorator(detail=False, allowed_methods=["GET"], methods=["GET"])
def fetch_user_profile(self, request, *args, **kwargs):
username = request.GET.get("username")
kwargs = {User.USERNAME_FIELD: username.lower()}
user = get_object_or_404(get_user_queryset(User.objects.all(), CallbackContext(self.kwargs)), **kwargs)
user_info = get_object_or_404(UserInfo.objects.all(), owner=user)
serializer = UserInfoPubkeySerializer(user_info)
return Response(serializer.data)
class InvitationIncomingViewSet(InvitationBaseViewSet):
allowed_methods = ["GET", "DELETE"]
def get_queryset(self, queryset=None):
if queryset is None:
queryset = type(self).queryset
return queryset.filter(user=self.request.user)
@action_decorator(detail=True, allowed_methods=["POST"], methods=["POST"])
def accept(self, request, invitation_uid=None, *args, **kwargs):
invitation = get_object_or_404(self.get_queryset(), uid=invitation_uid)
context = self.get_serializer_context()
context.update({"invitation": invitation})
serializer = InvitationAcceptSerializer(data=request.data, context=context)
serializer.is_valid(raise_exception=True)
serializer.save()
return Response(status=status.HTTP_201_CREATED)
class AuthenticationViewSet(viewsets.ViewSet):
allowed_methods = ["POST"]
authentication_classes = BaseViewSet.authentication_classes
renderer_classes = BaseViewSet.renderer_classes
parser_classes = BaseViewSet.parser_classes
def get_encryption_key(self, salt):
key = nacl.hash.blake2b(settings.SECRET_KEY.encode(), encoder=nacl.encoding.RawEncoder)
return nacl.hash.blake2b(
b"",
key=key,
salt=salt[: nacl.hash.BLAKE2B_SALTBYTES],
person=b"etebase-auth",
encoder=nacl.encoding.RawEncoder,
)
def get_queryset(self):
return get_user_queryset(User.objects.all(), CallbackContext(self.kwargs))
def get_serializer_context(self):
return {"request": self.request, "format": self.format_kwarg, "view": self}
def login_response_data(self, user):
return {
"token": AuthToken.objects.create(user=user).key,
"user": UserSerializer(user).data,
}
def list(self, request, *args, **kwargs):
return Response(status=status.HTTP_405_METHOD_NOT_ALLOWED)
@action_decorator(detail=False, methods=["POST"])
def signup(self, request, *args, **kwargs):
serializer = AuthenticationSignupSerializer(data=request.data, context=self.get_serializer_context())
serializer.is_valid(raise_exception=True)
user = serializer.save()
user_signed_up.send(sender=user.__class__, request=request, user=user)
data = self.login_response_data(user)
return Response(data, status=status.HTTP_201_CREATED)
def get_login_user(self, username):
kwargs = {User.USERNAME_FIELD + "__iexact": username.lower()}
try:
user = self.get_queryset().get(**kwargs)
if not hasattr(user, "userinfo"):
raise AuthenticationFailed({"code": "user_not_init", "detail": "User not properly init"})
return user
except User.DoesNotExist:
raise AuthenticationFailed({"code": "user_not_found", "detail": "User not found"})
def validate_login_request(self, request, validated_data, response_raw, signature, expected_action):
from datetime import datetime
username = validated_data.get("username")
user = self.get_login_user(username)
host = validated_data["host"]
challenge = validated_data["challenge"]
action = validated_data["action"]
salt = bytes(user.userinfo.salt)
enc_key = self.get_encryption_key(salt)
box = nacl.secret.SecretBox(enc_key)
challenge_data = msgpack_decode(box.decrypt(challenge))
now = int(datetime.now().timestamp())
if action != expected_action:
content = {"code": "wrong_action", "detail": 'Expected "{}" but got something else'.format(expected_action)}
return Response(content, status=status.HTTP_400_BAD_REQUEST)
elif now - challenge_data["timestamp"] > app_settings.CHALLENGE_VALID_SECONDS:
content = {"code": "challenge_expired", "detail": "Login challange has expired"}
return Response(content, status=status.HTTP_400_BAD_REQUEST)
elif challenge_data["userId"] != user.id:
content = {"code": "wrong_user", "detail": "This challenge is for the wrong user"}
return Response(content, status=status.HTTP_400_BAD_REQUEST)
elif not settings.DEBUG and host.split(":", 1)[0] != request.get_host().split(":", 1)[0]:
detail = 'Found wrong host name. Got: "{}" expected: "{}"'.format(host, request.get_host())
content = {"code": "wrong_host", "detail": detail}
return Response(content, status=status.HTTP_400_BAD_REQUEST)
verify_key = nacl.signing.VerifyKey(bytes(user.userinfo.loginPubkey), encoder=nacl.encoding.RawEncoder)
try:
verify_key.verify(response_raw, signature)
except nacl.exceptions.BadSignatureError:
return Response(
{"code": "login_bad_signature", "detail": "Wrong password for user."},
status=status.HTTP_401_UNAUTHORIZED,
)
return None
@action_decorator(detail=False, methods=["GET"])
def is_etebase(self, request, *args, **kwargs):
return Response({}, status=status.HTTP_200_OK)
@action_decorator(detail=False, methods=["POST"])
def login_challenge(self, request, *args, **kwargs):
from datetime import datetime
serializer = AuthenticationLoginChallengeSerializer(data=request.data)
serializer.is_valid(raise_exception=True)
username = serializer.validated_data.get("username")
user = self.get_login_user(username)
salt = bytes(user.userinfo.salt)
enc_key = self.get_encryption_key(salt)
box = nacl.secret.SecretBox(enc_key)
challenge_data = {
"timestamp": int(datetime.now().timestamp()),
"userId": user.id,
}
challenge = box.encrypt(msgpack_encode(challenge_data), encoder=nacl.encoding.RawEncoder)
ret = {
"salt": salt,
"challenge": challenge,
"version": user.userinfo.version,
}
return Response(ret, status=status.HTTP_200_OK)
@action_decorator(detail=False, methods=["POST"])
def login(self, request, *args, **kwargs):
outer_serializer = AuthenticationLoginSerializer(data=request.data)
outer_serializer.is_valid(raise_exception=True)
response_raw = outer_serializer.validated_data["response"]
response = msgpack_decode(response_raw)
signature = outer_serializer.validated_data["signature"]
context = {"host": request.get_host()}
serializer = AuthenticationLoginInnerSerializer(data=response, context=context)
serializer.is_valid(raise_exception=True)
bad_login_response = self.validate_login_request(
request, serializer.validated_data, response_raw, signature, "login"
)
if bad_login_response is not None:
return bad_login_response
username = serializer.validated_data.get("username")
user = self.get_login_user(username)
data = self.login_response_data(user)
user_logged_in.send(sender=user.__class__, request=request, user=user)
return Response(data, status=status.HTTP_200_OK)
@action_decorator(detail=False, methods=["POST"], permission_classes=[IsAuthenticated])
def logout(self, request, *args, **kwargs):
request.auth.delete()
user_logged_out.send(sender=request.user.__class__, request=request, user=request.user)
return Response(status=status.HTTP_204_NO_CONTENT)
@action_decorator(detail=False, methods=["POST"], permission_classes=BaseViewSet.permission_classes)
def change_password(self, request, *args, **kwargs):
outer_serializer = AuthenticationLoginSerializer(data=request.data)
outer_serializer.is_valid(raise_exception=True)
response_raw = outer_serializer.validated_data["response"]
response = msgpack_decode(response_raw)
signature = outer_serializer.validated_data["signature"]
context = {"host": request.get_host()}
serializer = AuthenticationChangePasswordInnerSerializer(request.user.userinfo, data=response, context=context)
serializer.is_valid(raise_exception=True)
bad_login_response = self.validate_login_request(
request, serializer.validated_data, response_raw, signature, "changePassword"
)
if bad_login_response is not None:
return bad_login_response
serializer.save()
return Response({}, status=status.HTTP_200_OK)
@action_decorator(detail=False, methods=["POST"], permission_classes=[IsAuthenticated])
def dashboard_url(self, request, *args, **kwargs):
get_dashboard_url = app_settings.DASHBOARD_URL_FUNC
if get_dashboard_url is None:
raise EtebaseValidationError(
"not_supported", "This server doesn't have a user dashboard.", status_code=status.HTTP_400_BAD_REQUEST
)
ret = {
"url": get_dashboard_url(request, *args, **kwargs),
}
return Response(ret)
class TestAuthenticationViewSet(viewsets.ViewSet):
allowed_methods = ["POST"]
renderer_classes = BaseViewSet.renderer_classes
parser_classes = BaseViewSet.parser_classes
def get_serializer_context(self):
return {"request": self.request, "format": self.format_kwarg, "view": self}
def list(self, request, *args, **kwargs):
return Response(status=status.HTTP_405_METHOD_NOT_ALLOWED)
@action_decorator(detail=False, methods=["POST"])
def reset(self, request, *args, **kwargs):
# Only run when in DEBUG mode! It's only used for tests
if not settings.DEBUG:
return HttpResponseBadRequest("Only allowed in debug mode.")
with transaction.atomic():
user_queryset = get_user_queryset(User.objects.all(), CallbackContext(self.kwargs))
user = get_object_or_404(user_queryset, username=request.data.get("user").get("username"))
# Only allow test users for extra safety
if not getattr(user, User.USERNAME_FIELD).startswith("test_user"):
return HttpResponseBadRequest("Endpoint not allowed for user.")
if hasattr(user, "userinfo"):
user.userinfo.delete()
serializer = AuthenticationSignupSerializer(data=request.data, context=self.get_serializer_context())
serializer.is_valid(raise_exception=True)
serializer.save()
# Delete all of the journal data for this user for a clear test env
user.collection_set.all().delete()
user.collectionmember_set.all().delete()
user.incoming_invitations.all().delete()
# FIXME: also delete chunk files!!!
return HttpResponse()

@ -18,16 +18,14 @@ from fastapi import APIRouter, Depends, status, Request
from fastapi.security import APIKeyHeader
from django_etebase import app_settings, models
from django_etebase.exceptions import EtebaseValidationError
from django_etebase.models import UserInfo
from django_etebase.signals import user_signed_up
from django_etebase.token_auth.models import AuthToken
from django_etebase.token_auth.models import get_default_expiry
from django_etebase.utils import create_user, get_user_queryset, CallbackContext
from django_etebase.views import msgpack_encode, msgpack_decode
from .exceptions import AuthenticationFailed, transform_validation_error, HttpError
from .msgpack import MsgpackRoute
from .utils import BaseModel, permission_responses
from .utils import BaseModel, permission_responses, msgpack_encode, msgpack_decode
User = get_user_model()
token_scheme = APIKeyHeader(name="Authorization")
@ -293,7 +291,7 @@ def signup_save(data: SignupIn, request: Request) -> User:
context=CallbackContext(request.path_params),
)
instance.full_clean()
except EtebaseValidationError as e:
except HttpError as e:
raise e
except django_exceptions.ValidationError as e:
transform_validation_error("user", e)

@ -1,5 +1,6 @@
import dataclasses
import typing as t
import msgpack
from fastapi import status, Query, Depends
from pydantic import BaseModel as PyBaseModel
@ -44,6 +45,14 @@ def is_collection_admin(collection, user):
return (member is not None) and (member.accessLevel == AccessLevels.ADMIN)
def msgpack_encode(content):
return msgpack.packb(content, use_bin_type=True)
def msgpack_decode(content):
return msgpack.unpackb(content, raw=False)
PERMISSIONS_READ = [Depends(x) for x in app_settings.API_PERMISSIONS_READ]
PERMISSIONS_READWRITE = PERMISSIONS_READ + [Depends(x) for x in app_settings.API_PERMISSIONS_WRITE]

@ -53,8 +53,6 @@ INSTALLED_APPS = [
"django.contrib.sessions",
"django.contrib.messages",
"django.contrib.staticfiles",
"corsheaders",
"rest_framework",
"myauth.apps.MyauthConfig",
"django_etebase.apps.DjangoEtebaseConfig",
"django_etebase.token_auth.apps.TokenAuthConfig",
@ -63,7 +61,6 @@ INSTALLED_APPS = [
MIDDLEWARE = [
"django.middleware.security.SecurityMiddleware",
"django.contrib.sessions.middleware.SessionMiddleware",
"corsheaders.middleware.CorsMiddleware",
"django.middleware.common.CommonMiddleware",
"django.middleware.csrf.CsrfViewMiddleware",
"django.contrib.auth.middleware.AuthenticationMiddleware",
@ -124,9 +121,6 @@ USE_L10N = True
USE_TZ = True
# Cors
CORS_ORIGIN_ALLOW_ALL = True
# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/3.0/howto/static-files/

@ -1,7 +1,7 @@
import os
from django.conf import settings
from django.conf.urls import include, url
from django.conf.urls import url
from django.contrib import admin
from django.urls import path, re_path
from django.views.generic import TemplateView
@ -9,15 +9,11 @@ from django.views.static import serve
from django.contrib.staticfiles import finders
urlpatterns = [
url(r"^api/", include("django_etebase.urls")),
url(r"^admin/", admin.site.urls),
path("", TemplateView.as_view(template_name="success.html")),
]
if settings.DEBUG:
urlpatterns += [
url(r"^api-auth/", include("rest_framework.urls", namespace="rest_framework")),
]
def serve_static(request, path):
filename = finders.find(path)

@ -1,9 +1,5 @@
django
django-cors-headers
djangorestframework
drf-nested-routers
msgpack
psycopg2-binary
pynacl
fastapi
uvicorn
uvicorn

@ -7,14 +7,10 @@
asgiref==3.3.1 # via django
cffi==1.14.4 # via pynacl
click==7.1.2 # via uvicorn
django-cors-headers==3.6.0 # via -r requirements.in/base.txt
django==3.1.4 # via -r requirements.in/base.txt, django-cors-headers, djangorestframework, drf-nested-routers
djangorestframework==3.12.2 # via -r requirements.in/base.txt, drf-nested-routers
drf-nested-routers==0.92.5 # via -r requirements.in/base.txt
django==3.1.4 # via -r requirements.in/base.txt
fastapi==0.63.0 # via -r requirements.in/base.txt
h11==0.11.0 # via uvicorn
msgpack==1.0.2 # via -r requirements.in/base.txt
psycopg2-binary==2.8.6 # via -r requirements.in/base.txt
pycparser==2.20 # via cffi
pydantic==1.7.3 # via fastapi
pynacl==1.4.0 # via -r requirements.in/base.txt

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