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Downcase userids for shared-secret registration

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This commit is contained in:
Richard van der Hoff 2017-11-10 12:39:05 +00:00
parent 9b599bc18d
commit e0ebd1e4bd
2 changed files with 21 additions and 3 deletions
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2
synapse/rest/client/v1/register.py
View File

@ -359,7 +359,7 @@ class RegisterRestServlet(ClientV1RestServlet):
if compare_digest(want_mac, got_mac): if compare_digest(want_mac, got_mac):
handler = self.handlers.registration_handler handler = self.handlers.registration_handler
user_id, token = yield handler.register( user_id, token = yield handler.register(
localpart=user, localpart=user.lower(),
password=password, password=password,
admin=bool(admin), admin=bool(admin),
) )

22
synapse/rest/client/v2_alpha/register.py
View File

@ -236,6 +236,15 @@ class RegisterRestServlet(RestServlet):
defer.returnValue((200, result)) # we throw for non 200 responses defer.returnValue((200, result)) # we throw for non 200 responses
return return
# for either shared secret or regular registration, downcase the
# provided username before attempting to register it. This should mean
# that people who try to register with upper-case in their usernames
# don't get a nasty surprise. (Note that we treat username
# case-insenstively in login, so they are free to carry on imagining
# that their username is CrAzYh4cKeR if that keeps them happy)
if desired_username is not None:
desired_username = desired_username.lower()
# == Shared Secret Registration == (e.g. create new user scripts) # == Shared Secret Registration == (e.g. create new user scripts)
if 'mac' in body: if 'mac' in body:
# FIXME: Should we really be determining if this is shared secret # FIXME: Should we really be determining if this is shared secret
@ -276,7 +285,7 @@ class RegisterRestServlet(RestServlet):
if desired_username is not None: if desired_username is not None:
yield self.registration_handler.check_username( yield self.registration_handler.check_username(
desired_username.lower(), desired_username,
guest_access_token=guest_access_token, guest_access_token=guest_access_token,
assigned_user_id=registered_user_id, assigned_user_id=registered_user_id,
) )
@ -423,13 +432,22 @@ class RegisterRestServlet(RestServlet):
def _do_shared_secret_registration(self, username, password, body): def _do_shared_secret_registration(self, username, password, body):
if not self.hs.config.registration_shared_secret: if not self.hs.config.registration_shared_secret:
raise SynapseError(400, "Shared secret registration is not enabled") raise SynapseError(400, "Shared secret registration is not enabled")
if not username:
raise SynapseError(
400, "username must be specified", errcode=Codes.BAD_JSON,
)
user = username.encode("utf-8") # use the username from the original request rather than the
# downcased one in `username` for the mac calculation
user = body["username"].encode("utf-8")
# str() because otherwise hmac complains that 'unicode' does not # str() because otherwise hmac complains that 'unicode' does not
# have the buffer interface # have the buffer interface
got_mac = str(body["mac"]) got_mac = str(body["mac"])
# FIXME this is different to the /v1/register endpoint, which
# includes the password and admin flag in the hashed text. Why are
# these different?
want_mac = hmac.new( want_mac = hmac.new(
key=self.hs.config.registration_shared_secret, key=self.hs.config.registration_shared_secret,
msg=user, msg=user,