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# Copyright 2023 Beeper Inc.
#
# 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
import re
from typing import TYPE_CHECKING
from synapse.api.errors import LimitExceededError
from synapse.api.ratelimiting import Ratelimiter
from synapse.http.server import respond_with_json
from synapse.http.servlet import RestServlet
from synapse.http.site import SynapseRequest
if TYPE_CHECKING:
from synapse.media.media_repository import MediaRepository
from synapse.server import HomeServer
logger = logging.getLogger(__name__)
class CreateResource(RestServlet):
PATTERNS = [re.compile("/_matrix/media/v1/create")]
def __init__(self, hs: "HomeServer", media_repo: "MediaRepository"):
super().__init__()
self.media_repo = media_repo
self.clock = hs.get_clock()
self.auth = hs.get_auth()
self.max_pending_media_uploads = hs.config.media.max_pending_media_uploads
# A rate limiter for creating new media IDs.
self._create_media_rate_limiter = Ratelimiter(
store=hs.get_datastores().main,
clock=self.clock,
cfg=hs.config.ratelimiting.rc_media_create,
)
async def on_POST(self, request: SynapseRequest) -> None:
requester = await self.auth.get_user_by_req(request)
# If the create media requests for the user are over the limit, drop them.
await self._create_media_rate_limiter.ratelimit(requester)
(
reached_pending_limit,
first_expiration_ts,
) = await self.media_repo.reached_pending_media_limit(requester.user)
if reached_pending_limit:
raise LimitExceededError(
limiter_name="max_pending_media_uploads",
retry_after_ms=first_expiration_ts - self.clock.time_msec(),
)
content_uri, unused_expires_at = await self.media_repo.create_media_id(
requester.user
)
logger.info(
"Created Media URI %r that if unused will expire at %d",
content_uri,
unused_expires_at,
)
respond_with_json(
request,
200,
{
"content_uri": content_uri,
"unused_expires_at": unused_expires_at,
},
send_cors=True,
)
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