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Merge pull request #3470 from matrix-org/matthew/fix-utf8-logging

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don't mix unicode strings with utf8-in-byte-strings
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Richard van der Hoff 2018-07-02 15:25:36 +01:00 committed by GitHub
commit f741630847
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2 changed files with 18 additions and 2 deletions
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1
changelog.d/3470.bugfix Normal file
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@ -0,0 +1 @@
Fix bug where synapse would explode when receiving unicode in HTTP User-Agent header

19
synapse/http/site.py
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@ -107,13 +107,28 @@ class SynapseRequest(Request):
end_time = time.time()
# need to decode as it could be raw utf-8 bytes
# from a IDN servname in an auth header
authenticated_entity = self.authenticated_entity
if authenticated_entity is not None:
authenticated_entity = authenticated_entity.decode("utf-8", "replace")
# ...or could be raw utf-8 bytes in the User-Agent header.
# N.B. if you don't do this, the logger explodes cryptically
# with maximum recursion trying to log errors about
# the charset problem.
# c.f. https://github.com/matrix-org/synapse/issues/3471
user_agent = self.get_user_agent()
if user_agent is not None:
user_agent = user_agent.decode("utf-8", "replace")
self.site.access_logger.info(
"%s - %s - {%s}"
" Processed request: %.3fsec (%.3fsec, %.3fsec) (%.3fsec/%.3fsec/%d)"
" %sB %s \"%s %s %s\" \"%s\" [%d dbevts]",
self.getClientIP(),
self.site.site_tag,
self.authenticated_entity,
authenticated_entity,
end_time - self.start_time,
ru_utime,
ru_stime,
@ -125,7 +140,7 @@ class SynapseRequest(Request):
self.method,
self.get_redacted_uri(),
self.clientproto,
self.get_user_agent(),
user_agent,
evt_db_fetch_count,
)