MatrixSynapse/synapse/rest/client/devices.py

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# Copyright 2015, 2016 OpenMarket Ltd
# Copyright 2020 The Matrix.org Foundation C.I.C.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
from typing import TYPE_CHECKING, List, Optional, Tuple
from pydantic import Extra, StrictStr
from synapse.api import errors
from synapse.api.errors import NotFoundError
from synapse.handlers.device import DeviceHandler
from synapse.http.server import HttpServer
from synapse.http.servlet import (
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RestServlet,
parse_and_validate_json_object_from_request,
)
from synapse.http.site import SynapseRequest
from synapse.rest.client._base import client_patterns, interactive_auth_handler
from synapse.rest.client.models import AuthenticationData
from synapse.rest.models import RequestBodyModel
from synapse.types import JsonDict
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if TYPE_CHECKING:
from synapse.server import HomeServer
logger = logging.getLogger(__name__)
class DevicesRestServlet(RestServlet):
PATTERNS = client_patterns("/devices$")
def __init__(self, hs: "HomeServer"):
super().__init__()
self.hs = hs
self.auth = hs.get_auth()
self.device_handler = hs.get_device_handler()
self._msc3852_enabled = hs.config.experimental.msc3852_enabled
async def on_GET(self, request: SynapseRequest) -> Tuple[int, JsonDict]:
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requester = await self.auth.get_user_by_req(request, allow_guest=True)
devices = await self.device_handler.get_devices_by_user(
requester.user.to_string()
)
# If MSC3852 is disabled, then the "last_seen_user_agent" field will be
# removed from each device. If it is enabled, then the field name will
# be replaced by the unstable identifier.
#
# When MSC3852 is accepted, this block of code can just be removed to
# expose "last_seen_user_agent" to clients.
for device in devices:
last_seen_user_agent = device["last_seen_user_agent"]
del device["last_seen_user_agent"]
if self._msc3852_enabled:
device["org.matrix.msc3852.last_seen_user_agent"] = last_seen_user_agent
return 200, {"devices": devices}
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class DeleteDevicesRestServlet(RestServlet):
"""
API for bulk deletion of devices. Accepts a JSON object with a devices
key which lists the device_ids to delete. Requires user interactive auth.
"""
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PATTERNS = client_patterns("/delete_devices")
def __init__(self, hs: "HomeServer"):
super().__init__()
self.hs = hs
self.auth = hs.get_auth()
handler = hs.get_device_handler()
assert isinstance(handler, DeviceHandler)
self.device_handler = handler
self.auth_handler = hs.get_auth_handler()
class PostBody(RequestBodyModel):
auth: Optional[AuthenticationData]
devices: List[StrictStr]
@interactive_auth_handler
async def on_POST(self, request: SynapseRequest) -> Tuple[int, JsonDict]:
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requester = await self.auth.get_user_by_req(request)
try:
body = parse_and_validate_json_object_from_request(request, self.PostBody)
except errors.SynapseError as e:
if e.errcode == errors.Codes.NOT_JSON:
# TODO: Can/should we remove this fallback now?
# deal with older clients which didn't pass a JSON dict
# the same as those that pass an empty dict
body = self.PostBody.parse_obj({})
else:
raise e
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await self.auth_handler.validate_user_via_ui_auth(
requester,
request,
body.dict(exclude_unset=True),
"remove device(s) from your account",
# Users might call this multiple times in a row while cleaning up
# devices, allow a single UI auth session to be re-used.
can_skip_ui_auth=True,
)
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await self.device_handler.delete_devices(
requester.user.to_string(), body.devices
)
return 200, {}
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class DeviceRestServlet(RestServlet):
PATTERNS = client_patterns("/devices/(?P<device_id>[^/]*)$")
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def __init__(self, hs: "HomeServer"):
super().__init__()
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self.hs = hs
self.auth = hs.get_auth()
handler = hs.get_device_handler()
assert isinstance(handler, DeviceHandler)
self.device_handler = handler
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self.auth_handler = hs.get_auth_handler()
self._msc3852_enabled = hs.config.experimental.msc3852_enabled
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async def on_GET(
self, request: SynapseRequest, device_id: str
) -> Tuple[int, JsonDict]:
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requester = await self.auth.get_user_by_req(request, allow_guest=True)
device = await self.device_handler.get_device(
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requester.user.to_string(), device_id
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)
if device is None:
raise NotFoundError("No device found")
# If MSC3852 is disabled, then the "last_seen_user_agent" field will be
# removed from each device. If it is enabled, then the field name will
# be replaced by the unstable identifier.
#
# When MSC3852 is accepted, this block of code can just be removed to
# expose "last_seen_user_agent" to clients.
last_seen_user_agent = device["last_seen_user_agent"]
del device["last_seen_user_agent"]
if self._msc3852_enabled:
device["org.matrix.msc3852.last_seen_user_agent"] = last_seen_user_agent
return 200, device
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class DeleteBody(RequestBodyModel):
auth: Optional[AuthenticationData]
@interactive_auth_handler
async def on_DELETE(
self, request: SynapseRequest, device_id: str
) -> Tuple[int, JsonDict]:
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requester = await self.auth.get_user_by_req(request)
try:
body = parse_and_validate_json_object_from_request(request, self.DeleteBody)
except errors.SynapseError as e:
if e.errcode == errors.Codes.NOT_JSON:
# TODO: can/should we remove this fallback now?
# deal with older clients which didn't pass a JSON dict
# the same as those that pass an empty dict
body = self.DeleteBody.parse_obj({})
else:
raise
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await self.auth_handler.validate_user_via_ui_auth(
requester,
request,
body.dict(exclude_unset=True),
"remove a device from your account",
# Users might call this multiple times in a row while cleaning up
# devices, allow a single UI auth session to be re-used.
can_skip_ui_auth=True,
)
await self.device_handler.delete_devices(
requester.user.to_string(), [device_id]
)
return 200, {}
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class PutBody(RequestBodyModel):
display_name: Optional[StrictStr]
async def on_PUT(
self, request: SynapseRequest, device_id: str
) -> Tuple[int, JsonDict]:
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requester = await self.auth.get_user_by_req(request, allow_guest=True)
body = parse_and_validate_json_object_from_request(request, self.PutBody)
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await self.device_handler.update_device(
requester.user.to_string(), device_id, body.dict()
)
return 200, {}
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class DehydratedDeviceDataModel(RequestBodyModel):
"""JSON blob describing a dehydrated device to be stored.
Expects other freeform fields. Use .dict() to access them.
"""
class Config:
extra = Extra.allow
algorithm: StrictStr
class DehydratedDeviceServlet(RestServlet):
"""Retrieve or store a dehydrated device.
GET /org.matrix.msc2697.v2/dehydrated_device
HTTP/1.1 200 OK
Content-Type: application/json
{
"device_id": "dehydrated_device_id",
"device_data": {
"algorithm": "org.matrix.msc2697.v1.dehydration.v1.olm",
"account": "dehydrated_device"
}
}
PUT /org.matrix.msc2697.v2/dehydrated_device
Content-Type: application/json
{
"device_data": {
"algorithm": "org.matrix.msc2697.v1.dehydration.v1.olm",
"account": "dehydrated_device"
}
}
HTTP/1.1 200 OK
Content-Type: application/json
{
"device_id": "dehydrated_device_id"
}
"""
PATTERNS = client_patterns("/org.matrix.msc2697.v2/dehydrated_device", releases=())
def __init__(self, hs: "HomeServer"):
super().__init__()
self.hs = hs
self.auth = hs.get_auth()
handler = hs.get_device_handler()
assert isinstance(handler, DeviceHandler)
self.device_handler = handler
async def on_GET(self, request: SynapseRequest) -> Tuple[int, JsonDict]:
requester = await self.auth.get_user_by_req(request)
dehydrated_device = await self.device_handler.get_dehydrated_device(
requester.user.to_string()
)
if dehydrated_device is not None:
(device_id, device_data) = dehydrated_device
result = {"device_id": device_id, "device_data": device_data}
return 200, result
else:
raise errors.NotFoundError("No dehydrated device available")
class PutBody(RequestBodyModel):
device_data: DehydratedDeviceDataModel
initial_device_display_name: Optional[StrictStr]
async def on_PUT(self, request: SynapseRequest) -> Tuple[int, JsonDict]:
submission = parse_and_validate_json_object_from_request(request, self.PutBody)
requester = await self.auth.get_user_by_req(request)
device_id = await self.device_handler.store_dehydrated_device(
requester.user.to_string(),
submission.device_data.dict(),
submission.initial_device_display_name,
)
return 200, {"device_id": device_id}
class ClaimDehydratedDeviceServlet(RestServlet):
"""Claim a dehydrated device.
POST /org.matrix.msc2697.v2/dehydrated_device/claim
Content-Type: application/json
{
"device_id": "dehydrated_device_id"
}
HTTP/1.1 200 OK
Content-Type: application/json
{
"success": true,
}
"""
PATTERNS = client_patterns(
"/org.matrix.msc2697.v2/dehydrated_device/claim", releases=()
)
def __init__(self, hs: "HomeServer"):
super().__init__()
self.hs = hs
self.auth = hs.get_auth()
handler = hs.get_device_handler()
assert isinstance(handler, DeviceHandler)
self.device_handler = handler
class PostBody(RequestBodyModel):
device_id: StrictStr
async def on_POST(self, request: SynapseRequest) -> Tuple[int, JsonDict]:
requester = await self.auth.get_user_by_req(request)
submission = parse_and_validate_json_object_from_request(request, self.PostBody)
result = await self.device_handler.rehydrate_device(
requester.user.to_string(),
self.auth.get_access_token_from_request(request),
submission.device_id,
)
return 200, result
def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None:
DeleteDevicesRestServlet(hs).register(http_server)
DevicesRestServlet(hs).register(http_server)
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DeviceRestServlet(hs).register(http_server)
DehydratedDeviceServlet(hs).register(http_server)
ClaimDehydratedDeviceServlet(hs).register(http_server)