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Merge pull request #3470 from matrix-org/matthew/fix-utf8-logging
don't mix unicode strings with utf8-in-byte-strings
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commit
f741630847
2 changed files with 18 additions and 2 deletions
1
changelog.d/3470.bugfix
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1
changelog.d/3470.bugfix
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Fix bug where synapse would explode when receiving unicode in HTTP User-Agent header
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@ -107,13 +107,28 @@ class SynapseRequest(Request):
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end_time = time.time()
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# need to decode as it could be raw utf-8 bytes
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# from a IDN servname in an auth header
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authenticated_entity = self.authenticated_entity
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if authenticated_entity is not None:
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authenticated_entity = authenticated_entity.decode("utf-8", "replace")
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# ...or could be raw utf-8 bytes in the User-Agent header.
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# N.B. if you don't do this, the logger explodes cryptically
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# with maximum recursion trying to log errors about
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# the charset problem.
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# c.f. https://github.com/matrix-org/synapse/issues/3471
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user_agent = self.get_user_agent()
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if user_agent is not None:
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user_agent = user_agent.decode("utf-8", "replace")
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self.site.access_logger.info(
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"%s - %s - {%s}"
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" Processed request: %.3fsec (%.3fsec, %.3fsec) (%.3fsec/%.3fsec/%d)"
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" %sB %s \"%s %s %s\" \"%s\" [%d dbevts]",
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self.getClientIP(),
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self.site.site_tag,
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self.authenticated_entity,
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authenticated_entity,
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end_time - self.start_time,
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ru_utime,
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ru_stime,
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@ -125,7 +140,7 @@ class SynapseRequest(Request):
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self.method,
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self.get_redacted_uri(),
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self.clientproto,
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self.get_user_agent(),
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user_agent,
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evt_db_fetch_count,
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)
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