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![Patrick Cloke](/assets/img/avatar_default.png)
If no thumbnail of the requested type exists, return a 404 instead of erroring. This doesn't quite match the spec (which does not define what happens if no thumbnail can be found), but is consistent with what Synapse already does.
401 lines
13 KiB
Python
401 lines
13 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2018 New Vector Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import os
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import shutil
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import tempfile
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from binascii import unhexlify
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from io import BytesIO
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from typing import Optional
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from urllib import parse
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from mock import Mock
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import attr
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from parameterized import parameterized_class
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from PIL import Image as Image
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from twisted.internet import defer
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from twisted.internet.defer import Deferred
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from synapse.logging.context import make_deferred_yieldable
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from synapse.rest.media.v1._base import FileInfo
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from synapse.rest.media.v1.filepath import MediaFilePaths
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from synapse.rest.media.v1.media_storage import MediaStorage
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from synapse.rest.media.v1.storage_provider import FileStorageProviderBackend
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from tests import unittest
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from tests.server import FakeSite, make_request
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class MediaStorageTests(unittest.HomeserverTestCase):
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needs_threadpool = True
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def prepare(self, reactor, clock, hs):
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self.test_dir = tempfile.mkdtemp(prefix="synapse-tests-")
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self.addCleanup(shutil.rmtree, self.test_dir)
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self.primary_base_path = os.path.join(self.test_dir, "primary")
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self.secondary_base_path = os.path.join(self.test_dir, "secondary")
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hs.config.media_store_path = self.primary_base_path
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storage_providers = [FileStorageProviderBackend(hs, self.secondary_base_path)]
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self.filepaths = MediaFilePaths(self.primary_base_path)
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self.media_storage = MediaStorage(
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hs, self.primary_base_path, self.filepaths, storage_providers
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)
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def test_ensure_media_is_in_local_cache(self):
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media_id = "some_media_id"
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test_body = "Test\n"
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# First we create a file that is in a storage provider but not in the
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# local primary media store
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rel_path = self.filepaths.local_media_filepath_rel(media_id)
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secondary_path = os.path.join(self.secondary_base_path, rel_path)
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os.makedirs(os.path.dirname(secondary_path))
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with open(secondary_path, "w") as f:
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f.write(test_body)
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# Now we run ensure_media_is_in_local_cache, which should copy the file
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# to the local cache.
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file_info = FileInfo(None, media_id)
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# This uses a real blocking threadpool so we have to wait for it to be
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# actually done :/
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x = defer.ensureDeferred(
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self.media_storage.ensure_media_is_in_local_cache(file_info)
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)
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# Hotloop until the threadpool does its job...
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self.wait_on_thread(x)
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local_path = self.get_success(x)
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self.assertTrue(os.path.exists(local_path))
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# Asserts the file is under the expected local cache directory
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self.assertEquals(
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os.path.commonprefix([self.primary_base_path, local_path]),
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self.primary_base_path,
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)
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with open(local_path) as f:
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body = f.read()
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self.assertEqual(test_body, body)
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@attr.s
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class _TestImage:
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"""An image for testing thumbnailing with the expected results
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Attributes:
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data: The raw image to thumbnail
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content_type: The type of the image as a content type, e.g. "image/png"
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extension: The extension associated with the format, e.g. ".png"
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expected_cropped: The expected bytes from cropped thumbnailing, or None if
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test should just check for success.
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expected_scaled: The expected bytes from scaled thumbnailing, or None if
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test should just check for a valid image returned.
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"""
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data = attr.ib(type=bytes)
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content_type = attr.ib(type=bytes)
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extension = attr.ib(type=bytes)
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expected_cropped = attr.ib(type=Optional[bytes])
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expected_scaled = attr.ib(type=Optional[bytes])
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expected_found = attr.ib(default=True, type=bool)
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@parameterized_class(
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("test_image",),
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[
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# smoll png
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(
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_TestImage(
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unhexlify(
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b"89504e470d0a1a0a0000000d4948445200000001000000010806"
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b"0000001f15c4890000000a49444154789c63000100000500010d"
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b"0a2db40000000049454e44ae426082"
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),
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b"image/png",
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b".png",
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unhexlify(
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b"89504e470d0a1a0a0000000d4948445200000020000000200806"
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b"000000737a7af40000001a49444154789cedc101010000008220"
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b"ffaf6e484001000000ef0610200001194334ee0000000049454e"
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b"44ae426082"
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),
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unhexlify(
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b"89504e470d0a1a0a0000000d4948445200000001000000010806"
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b"0000001f15c4890000000d49444154789c636060606000000005"
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b"0001a5f645400000000049454e44ae426082"
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),
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),
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),
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# small lossless webp
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(
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_TestImage(
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unhexlify(
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b"524946461a000000574542505650384c0d0000002f0000001007"
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b"1011118888fe0700"
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),
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b"image/webp",
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b".webp",
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None,
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None,
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),
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),
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# an empty file
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(_TestImage(b"", b"image/gif", b".gif", None, None, False,),),
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],
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)
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class MediaRepoTests(unittest.HomeserverTestCase):
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hijack_auth = True
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user_id = "@test:user"
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def make_homeserver(self, reactor, clock):
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self.fetches = []
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def get_file(destination, path, output_stream, args=None, max_size=None):
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"""
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Returns tuple[int,dict,str,int] of file length, response headers,
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absolute URI, and response code.
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"""
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def write_to(r):
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data, response = r
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output_stream.write(data)
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return response
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d = Deferred()
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d.addCallback(write_to)
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self.fetches.append((d, destination, path, args))
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return make_deferred_yieldable(d)
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client = Mock()
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client.get_file = get_file
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self.storage_path = self.mktemp()
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self.media_store_path = self.mktemp()
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os.mkdir(self.storage_path)
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os.mkdir(self.media_store_path)
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config = self.default_config()
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config["media_store_path"] = self.media_store_path
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config["max_image_pixels"] = 2000000
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provider_config = {
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"module": "synapse.rest.media.v1.storage_provider.FileStorageProviderBackend",
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"store_local": True,
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"store_synchronous": False,
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"store_remote": True,
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"config": {"directory": self.storage_path},
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}
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config["media_storage_providers"] = [provider_config]
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hs = self.setup_test_homeserver(config=config, federation_http_client=client)
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return hs
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def prepare(self, reactor, clock, hs):
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self.media_repo = hs.get_media_repository_resource()
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self.download_resource = self.media_repo.children[b"download"]
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self.thumbnail_resource = self.media_repo.children[b"thumbnail"]
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self.media_id = "example.com/12345"
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def _req(self, content_disposition):
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channel = make_request(
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self.reactor,
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FakeSite(self.download_resource),
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"GET",
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self.media_id,
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shorthand=False,
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await_result=False,
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)
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self.pump()
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# We've made one fetch, to example.com, using the media URL, and asking
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# the other server not to do a remote fetch
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self.assertEqual(len(self.fetches), 1)
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self.assertEqual(self.fetches[0][1], "example.com")
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self.assertEqual(
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self.fetches[0][2], "/_matrix/media/r0/download/" + self.media_id
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)
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self.assertEqual(self.fetches[0][3], {"allow_remote": "false"})
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headers = {
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b"Content-Length": [b"%d" % (len(self.test_image.data))],
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b"Content-Type": [self.test_image.content_type],
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}
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if content_disposition:
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headers[b"Content-Disposition"] = [content_disposition]
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self.fetches[0][0].callback(
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(self.test_image.data, (len(self.test_image.data), headers))
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)
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self.pump()
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self.assertEqual(channel.code, 200)
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return channel
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def test_disposition_filename_ascii(self):
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"""
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If the filename is filename=<ascii> then Synapse will decode it as an
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ASCII string, and use filename= in the response.
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"""
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channel = self._req(b"inline; filename=out" + self.test_image.extension)
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headers = channel.headers
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self.assertEqual(
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headers.getRawHeaders(b"Content-Type"), [self.test_image.content_type]
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)
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self.assertEqual(
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headers.getRawHeaders(b"Content-Disposition"),
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[b"inline; filename=out" + self.test_image.extension],
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)
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def test_disposition_filenamestar_utf8escaped(self):
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"""
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If the filename is filename=*utf8''<utf8 escaped> then Synapse will
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correctly decode it as the UTF-8 string, and use filename* in the
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response.
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"""
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filename = parse.quote("\u2603".encode("utf8")).encode("ascii")
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channel = self._req(
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b"inline; filename*=utf-8''" + filename + self.test_image.extension
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)
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headers = channel.headers
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self.assertEqual(
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headers.getRawHeaders(b"Content-Type"), [self.test_image.content_type]
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)
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self.assertEqual(
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headers.getRawHeaders(b"Content-Disposition"),
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[b"inline; filename*=utf-8''" + filename + self.test_image.extension],
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)
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def test_disposition_none(self):
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"""
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If there is no filename, one isn't passed on in the Content-Disposition
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of the request.
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"""
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channel = self._req(None)
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headers = channel.headers
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self.assertEqual(
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headers.getRawHeaders(b"Content-Type"), [self.test_image.content_type]
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)
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self.assertEqual(headers.getRawHeaders(b"Content-Disposition"), None)
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def test_thumbnail_crop(self):
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"""Test that a cropped remote thumbnail is available."""
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self._test_thumbnail(
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"crop", self.test_image.expected_cropped, self.test_image.expected_found
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)
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def test_thumbnail_scale(self):
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"""Test that a scaled remote thumbnail is available."""
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self._test_thumbnail(
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"scale", self.test_image.expected_scaled, self.test_image.expected_found
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)
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def test_invalid_type(self):
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"""An invalid thumbnail type is never available."""
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self._test_thumbnail("invalid", None, False)
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@unittest.override_config(
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{"thumbnail_sizes": [{"width": 32, "height": 32, "method": "scale"}]}
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)
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def test_no_thumbnail_crop(self):
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"""
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Override the config to generate only scaled thumbnails, but request a cropped one.
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"""
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self._test_thumbnail("crop", None, False)
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@unittest.override_config(
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{"thumbnail_sizes": [{"width": 32, "height": 32, "method": "crop"}]}
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)
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def test_no_thumbnail_scale(self):
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"""
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Override the config to generate only cropped thumbnails, but request a scaled one.
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"""
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self._test_thumbnail("scale", None, False)
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def _test_thumbnail(self, method, expected_body, expected_found):
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params = "?width=32&height=32&method=" + method
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channel = make_request(
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self.reactor,
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FakeSite(self.thumbnail_resource),
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"GET",
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self.media_id + params,
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shorthand=False,
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await_result=False,
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)
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self.pump()
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headers = {
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b"Content-Length": [b"%d" % (len(self.test_image.data))],
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b"Content-Type": [self.test_image.content_type],
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}
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self.fetches[0][0].callback(
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(self.test_image.data, (len(self.test_image.data), headers))
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)
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self.pump()
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if expected_found:
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self.assertEqual(channel.code, 200)
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if expected_body is not None:
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self.assertEqual(
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channel.result["body"], expected_body, channel.result["body"]
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)
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else:
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# ensure that the result is at least some valid image
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Image.open(BytesIO(channel.result["body"]))
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else:
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# A 404 with a JSON body.
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self.assertEqual(channel.code, 404)
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self.assertEqual(
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channel.json_body,
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{
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"errcode": "M_NOT_FOUND",
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"error": "Not found [b'example.com', b'12345']",
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},
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)
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def test_x_robots_tag_header(self):
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"""
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Tests that the `X-Robots-Tag` header is present, which informs web crawlers
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to not index, archive, or follow links in media.
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"""
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channel = self._req(b"inline; filename=out" + self.test_image.extension)
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headers = channel.headers
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self.assertEqual(
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headers.getRawHeaders(b"X-Robots-Tag"),
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[b"noindex, nofollow, noarchive, noimageindex"],
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)
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