diff options
Diffstat (limited to 'synapse/rest')
| -rw-r--r-- | synapse/rest/media/v1/preview_url_resource.py | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/synapse/rest/media/v1/preview_url_resource.py b/synapse/rest/media/v1/preview_url_resource.py index 1a7bfd6b56..91d1dafe64 100644 --- a/synapse/rest/media/v1/preview_url_resource.py +++ b/synapse/rest/media/v1/preview_url_resource.py @@ -12,6 +12,7 @@ # 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 cgi import datetime import errno @@ -24,6 +25,7 @@ import shutil import sys import traceback +import six from six import string_types from six.moves import urllib_parse as urlparse @@ -98,7 +100,7 @@ class PreviewUrlResource(Resource): # XXX: if get_user_by_req fails, what should we do in an async render? requester = yield self.auth.get_user_by_req(request) url = parse_string(request, "url") - if "ts" in request.args: + if b"ts" in request.args: ts = parse_integer(request, "ts") else: ts = self.clock.time_msec() @@ -180,7 +182,12 @@ class PreviewUrlResource(Resource): cache_result["expires_ts"] > ts and cache_result["response_code"] / 100 == 2 ): - defer.returnValue(cache_result["og"]) + # It may be stored as text in the database, not as bytes (such as + # PostgreSQL). If so, encode it back before handing it on. + og = cache_result["og"] + if isinstance(og, six.text_type): + og = og.encode('utf8') + defer.returnValue(og) return media_info = yield self._download_url(url, user) @@ -213,14 +220,17 @@ class PreviewUrlResource(Resource): elif _is_html(media_info['media_type']): # TODO: somehow stop a big HTML tree from exploding synapse's RAM - file = open(media_info['filename']) - body = file.read() - file.close() + with open(media_info['filename'], 'rb') as file: + body = file.read() # clobber the encoding from the content-type, or default to utf-8 # XXX: this overrides any <meta/> or XML charset headers in the body # which may pose problems, but so far seems to work okay. - match = re.match(r'.*; *charset=(.*?)(;|$)', media_info['media_type'], re.I) + match = re.match( + r'.*; *charset="?(.*?)"?(;|$)', + media_info['media_type'], + re.I + ) encoding = match.group(1) if match else "utf-8" og = decode_and_calc_og(body, media_info['uri'], encoding) |