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Make sure we're not registering the same 3pid twice

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This commit is contained in:
Brendan Abolivier 2019-04-17 12:01:59 +01:00
parent 35442efb75
commit 600ec04739
2 changed files with 19 additions and 0 deletions
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1
changelog.d/5071.bugfix Normal file
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@ -0,0 +1 @@
Make sure we're not registering the same 3pid twice on registration.

18
synapse/rest/client/v2_alpha/register.py
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@ -391,6 +391,13 @@ class RegisterRestServlet(RestServlet):
# the user-facing checks will probably already have happened in # the user-facing checks will probably already have happened in
# /register/email/requestToken when we requested a 3pid, but that's not # /register/email/requestToken when we requested a 3pid, but that's not
# guaranteed. # guaranteed.
#
# Also check that we're not trying to register a 3pid that's already
# been registered.
#
# This has probably happened in /register/email/requestToken as well,
# but if a user hits this endpoint twice then clicks on each link from
# the two activation emails, they would register the same 3pid twice.
if auth_result: if auth_result:
for login_type in [LoginType.EMAIL_IDENTITY, LoginType.MSISDN]: for login_type in [LoginType.EMAIL_IDENTITY, LoginType.MSISDN]:
@ -406,6 +413,17 @@ class RegisterRestServlet(RestServlet):
Codes.THREEPID_DENIED, Codes.THREEPID_DENIED,
) )
existingUid = yield self.store.get_user_id_by_threepid(
medium, address,
)
if existingUid is not None:
raise SynapseError(
400,
"%s is already in use" % medium,
Codes.THREEPID_IN_USE,
)
if registered_user_id is not None: if registered_user_id is not None:
logger.info( logger.info(
"Already registered user ID %r for this session", "Already registered user ID %r for this session",