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Fix a potential bug of UnboundLocalError (#8329)

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Replaced with less buggier control flow
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Jonathan de Jong 2020-09-17 12:54:56 +02:00 committed by GitHub
parent a3f124b821
commit 53284c425e
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2 changed files with 9 additions and 5 deletions
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changelog.d/8329.bugfix Normal file
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@ -0,0 +1 @@
Fix UnboundLocalError from occuring when appservices send malformed register request.

13
synapse/rest/client/v2_alpha/register.py
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@ -431,11 +431,14 @@ class RegisterRestServlet(RestServlet):
access_token = self.auth.get_access_token_from_request(request)
if isinstance(desired_username, str):
result = await self._do_appservice_registration(
desired_username, access_token, body
)
return 200, result # we throw for non 200 responses
if not isinstance(desired_username, str):
raise SynapseError(400, "Desired Username is missing or not a string")
result = await self._do_appservice_registration(
desired_username, access_token, body
)
return 200, result
# == Normal User Registration == (everyone else)
if not self._registration_enabled: